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WO2024164248A1 - 集流构件、储能装置和用电设备 - Google Patents

集流构件、储能装置和用电设备 Download PDF

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Publication number
WO2024164248A1
WO2024164248A1 PCT/CN2023/075259 CN2023075259W WO2024164248A1 WO 2024164248 A1 WO2024164248 A1 WO 2024164248A1 CN 2023075259 W CN2023075259 W CN 2023075259W WO 2024164248 A1 WO2024164248 A1 WO 2024164248A1
Authority
WO
WIPO (PCT)
Prior art keywords
connecting portion
distance
current collecting
straight line
line segment
Prior art date
Application number
PCT/CN2023/075259
Other languages
English (en)
French (fr)
Inventor
熊永锋
陈进强
Original Assignee
深圳海润新能源科技有限公司
厦门海辰储能科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳海润新能源科技有限公司, 厦门海辰储能科技股份有限公司 filed Critical 深圳海润新能源科技有限公司
Priority to PCT/CN2023/075259 priority Critical patent/WO2024164248A1/zh
Publication of WO2024164248A1 publication Critical patent/WO2024164248A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors

Definitions

  • the present application relates to the field of energy storage technology, and in particular to a current collecting component, an energy storage device and an electrical equipment.
  • Energy storage batteries have been widely used due to their advantages such as high energy density, high operating voltage and long service life.
  • the pole of the energy storage battery can be electrically connected to the pole ear through the adapter to make full use of the internal space of the energy storage battery and improve the assembly quality of the power battery.
  • the existing energy storage battery will generate a huge current when short-circuited, and a lot of heat will be generated, which may cause the energy storage battery to catch fire and explode, causing safety accidents.
  • an object of the present invention is to provide a current collecting component, an energy storage device and an electrical equipment to solve the technical problem of high safety risk in the prior art.
  • an embodiment of the present application provides a current collecting component, including a transfer sheet and an insulating member, the transfer sheet including a first connection portion, a second connection portion and a bendable connection portion connecting the first connection portion and the second connection portion, the first connection portion and the second connection portion being arranged opposite to each other; the insulating member is located between the first connection portion and the second connection portion which can be folded relative to each other, the bendable connection portion is provided with a through hole to form a first fuse portion and a second fuse portion connecting the first connection portion and the second connection portion on opposite sides of the through hole; when the transfer sheet is in an unfolded state, the through hole has a first straight line segment, a first corner segment, a second corner segment and a second straight line segment, the first straight line segment is connected to the first corner segment and is connected to the first fuse portion Adjacent, the second straight line segment is connected to the second corner segment and is adjacent to the second fuse part, and the first corner segment and the second corner segment are both rounded; the distance between
  • the current collecting component provided in the embodiment of the present application is provided with a through hole on the bendable connecting portion, so that the huge current generated by the energy storage device when out of control can act on the first fuse portion and the second fuse portion to fuse the first fuse portion and the second fuse portion, so that an open circuit state is formed between the first connecting portion and the second connecting portion, and no voltage is output, which protects the energy storage device and does not cause explosion or fire.
  • the insulating member can increase the insulation of the first connecting portion and the second connecting portion on both sides of the first fuse portion and the second fuse portion, thereby further increasing the arc extinguishing effect.
  • the first corner section and the second corner section of the through hole The segments are all set with rounded corners, so as to avoid the adapter from scratching the pole ear and improve the production yield; thirdly, by setting the distance between the first straight line segment and the end of the first fuse part away from the first straight line segment to be smaller than the distance between the end of the first corner segment away from the first straight line segment and the end of the first fuse part away from the first corner segment; the distance between the second straight line segment and the end of the second fuse part away from the second straight line segment is smaller than the distance between the end of the second corner segment away from the second straight line segment and the end of the second fuse part away from the second corner segment, the fuse position of the adapter is made closer to the mechanical fatigue area of the bendable connection part, the fuse effect is easier to form, and the safety of the energy storage device is improved.
  • the fusing direction of the first fuse part and the fusing direction of the second fuse part are both perpendicular to the bending direction of the bendable connecting part, thereby ensuring that the first fuse part and the second fuse part are The fuse is more likely to blow and the adapter is easier to bend.
  • the ratio of the first distance to the second distance is 0.7-0.95; the ratio of the third distance to the fourth distance is 0.7-0.95, thereby ensuring the fusing reliability of the first fuse part and the second fuse part, and at the same time ensuring that the adapter has the characteristics of high strength and not easy to break.
  • the number of the first corner segment and the second corner segment each includes two, the two first corner segments are connected to the opposite ends of the first straight line segment, and the two second corner segments are connected to the opposite ends of the second straight line segment, the through hole also includes a third straight line segment and a fourth straight line segment connected to the first corner segment and the second corner segment, the first straight line segment, the two first corner segments, the two second corner segments, the second straight line segment, the third straight line segment and the fourth straight line segment together form the through hole, thereby, the punching die produced in this way has a simple structure and is more convenient to open and close the die, and at the same time, the through hole is used to reduce the length required for the bending position of the bendable connection part, which is more conducive to bending and forming.
  • the lengths of the first straight line segment and the second straight line segment are equal and are the first length
  • the distance between the third straight line segment and the fourth straight line segment is the fifth distance
  • the ratio of the first length to the fifth distance is 3/7-9/10, thereby ensuring that the mechanical fatigue zone of the bendable connection portion that is easy to bend is highly coincident with the position where the first fuse portion and the second fuse portion are formed by melting, and thereby the melting of the first fuse portion and the second fuse portion is more likely to occur.
  • the lengths of the third straight line segment and the fourth straight line segment are equal and are the second length
  • the distance between the first straight line segment and the second straight line segment is the sixth distance
  • the ratio of the second length to the sixth distance is 0.4-0.9, thereby ensuring the fusing reliability of the first fuse part and the second fuse part, and at the same time ensuring that the adapter has the characteristics of high strength and not easy to break.
  • the distance between one end of the first fuse part away from the first straight line segment and one end of the second fuse part away from the second straight line segment is a sixth distance, and the ratio of the fifth distance to the sixth distance is 0.15-0.25, so that the first fuse part and the second fuse part are more likely to fuse, and at the same time, the first fuse part and the second fuse part of the adapter are prevented from stress fatigue or even breakage during the bending process, thereby improving the reliability of the adapter.
  • the first connection portion, the insulating member, and the second connection portion are stacked in the thickness direction of the current collecting member.
  • the overall structure of the current collecting member is made more compact and space is saved;
  • the first connection portion and the second connection portion are separated by the insulating member in the thickness direction of the adapter sheet, thereby avoiding the problem of short circuit between the first connection portion and the second connection portion, and the insulating member plays a buffering role between the first connection portion and the second connection portion, enhancing the structural strength of the bendable connection portion, thereby avoiding the problem of wrinkles or fractures of the bendable connection portion after bending.
  • the first connection portion includes a first welding area
  • the second connection portion includes a second welding area
  • the orthographic projections of the first welding area and the second welding area on the first connection portion are spaced apart from each other, thereby further avoiding the risk of short circuit caused by direct contact between the first connection portion and the second connection portion.
  • the bendable connecting portion includes a C-shaped structure, a U-shaped structure, a V-shaped structure or a wavy structure, thereby ensuring that the first fuse portion and the second fuse portion can be bent smoothly, thereby improving the product mass production yield.
  • the adapter sheet is folded along a first folding axis to form two layers of adapter sheet bodies, a gap is formed between the two layers of the adapter sheet bodies, and the two layers of the adapter sheet bodies are folded along a second folding axis to form the first connection portion, the second connection portion, and the bendable connection portion, and the first folding axis is parallel to the second folding axis.
  • the gap can be used as a channel for inserting the pole ear, and can provide stress release space for the adapter plate body to bend again, so as to improve the fracture resistance of the adapter plate;
  • the two layers of the adapter plate body can be used as anti-bending thickened layers to improve the structural strength of the first fuse part and the second fuse part, and reduce the damage to the wire caused by excessive bending angles, and the adapter plate is folded along the first folding axis as a whole and then bent along the second folding axis, which is convenient for bending processing, realizes standardization of bending processing and improves processing accuracy; on the other hand, it avoids the intersection of the first folding axis and the second folding axis to cause bending abnormalities and large space occupation, thereby facilitating processing and reducing the scrap rate of production.
  • the adapter plate forms an arc structure at the first folding axis, thereby further avoiding the problem of the adapter plate breaking at the first folding axis, facilitating bending processing and improving the efficiency of the tab assembly.
  • the gap includes an insertion space for inserting the pole ear
  • the adapter plate body of the second connecting part includes a first connecting plate and a second connecting plate
  • the insertion space is formed between the first connecting plate and the second connecting plate, so that the second connecting part clamps the pole ear, thereby avoiding the pole ear from being displaced during ultrasonic welding, resulting in problems such as cold soldering and wrong soldering.
  • the first connecting piece is closer to the first connecting portion relative to the second connecting piece, and the second connecting piece is farther away from the first connecting portion relative to the first connecting piece.
  • the punching direction of the first connecting piece is toward the first connecting portion and opposite to the punching direction of the second connecting piece, thereby avoiding the risk of burrs on the punching edge scratching the pole ear and causing the pole ear to rupture.
  • the adapter sheet includes one or more metal foil sheets, all of which are stacked and folded along the first folding axis to form two layers of the adapter sheet body.
  • the adapter sheet includes only one metal foil sheet, cost savings, weight reduction, and convenience for bending the adapter sheet are achieved; when the adapter sheet includes only multiple metal foil sheets, the adapter sheet is configured as a multi-layer stacking structure, so that the thickness of the stacking structure is increased to better absorb and disperse the stress during bending, thereby avoiding the problem of the adapter sheet breaking during the bending process.
  • the circuit between the first connection part and the second connection part can be quickly disconnected, and the insulating member can further avoid the problem of the outermost metal foil sheet creeping to cause the first connection part and the second connection part to overlap easily.
  • the insulating member includes a limiting surface for abutting against the first fuse part and/or the second fuse part, and the first fuse part and/or the second fuse part flips and bends around the limiting surface.
  • the bendable connection part flips and bends around the limiting surface, so that the limiting surface plays a role in guiding the bending of the bendable connection part, and plays a supporting role for the bendable connection part during the bending process, so that the adapter is easier to bend;
  • the insulating member can buffer the bendable connection part, so that the insulating member can absorb and disperse the stress of the bendable connection part when it is bent, so as to improve the structural force strength of the bendable connection part during the bending process, and then can effectively avoid the problem of the bendable connection part being broken due to excessive force, and extend the service life of the bendable connection part.
  • the insulating member includes a limiting body and a movable flap that is flippably connected to the limiting body, the limiting body is used to abut against the first connecting portion, and the movable flap is used to abut against the second connecting portion.
  • the bending amplitude of the bendable connecting portion is limited by the bending amplitude of the movable flap relative to the limiting body to avoid the bendable connecting portion from breaking during the bending process; on the other hand, the movable flap is flippably connected to the limiting body to avoid concave deformation of the surface of the insulating member due to pressure, so that the insulating member has good pressure resistance, thereby improving the buffering effect of the insulating member on the bendable connecting portion.
  • the limiting body is fixed on the first connecting portion, thereby improving the connection strength between the insulating member and the adapter plate to better fix the relative position of the insulating member, thereby avoiding displacement of the insulating member and abnormal bending of the bendable connecting portion.
  • the first connection portion includes a first welding area
  • the limiting body is provided with a window exposing the first welding area
  • the current collecting member further includes a first insulating film, which is disposed at the window and covers the window.
  • the first insulating film can prevent metal scraps such as welding slag, rusty debris, etc. at the first connection portion from falling into the energy storage device and causing a short circuit, which helps to improve the yield and safety of the energy storage device; on the other hand, the first insulating film can further avoid the problem of a short circuit caused by the contact between the first connection portion and the second connection portion.
  • the limiting body is fixed to the first connection portion through the first insulating film.
  • the connection strength between the first insulating film and the first connection portion is improved to further reduce the phenomenon of displacement or detachment of the first insulating film during the movement of the energy storage device; on the other hand, the position of the insulating member is limited to ensure that the bendable connection portion can be turned over and bent around the limiting surface of the insulating member, and the assembly efficiency of the limiting body is improved.
  • the current collecting member further includes a second insulating film, and the second insulating film is clamped between the first insulating film and the movable flip cover.
  • the connection strength between the first insulating film and the first connecting portion is improved to further reduce the phenomenon of displacement or detachment of the first insulating film during the movement of the energy storage device; on the other hand, the position of the insulating member is limited to ensure that the bendable connecting portion can be flipped and bent around the limiting surface of the insulating member, and the assembly efficiency of the limiting body is improved.
  • the second connection portion includes a second welding area
  • the movable flap is provided with a notch at a position corresponding to the second welding area to expose the second insulating film.
  • the second insulating film can prevent metal scraps such as welding slag and rusty debris at the second connection portion from falling into the energy storage device and causing a short circuit, which helps to improve the yield and safety of the energy storage device; on the other hand, the second insulating film can further avoid the problem of a short circuit caused by contact between the first connection portion and the second connection portion.
  • an embodiment of the present application provides an energy storage device, comprising a pole lug, a pole column, and a current collecting component as described above.
  • the first connection portion of the current collecting component is electrically connected to the pole column, and the second connection portion of the current collecting component is electrically connected to the pole lug, so as to avoid thermal runaway of the energy storage device and improve the safety of the energy storage device.
  • an embodiment of the present application provides an electrical device, comprising the energy storage device as described above, wherein the energy storage device provides electrical energy to the electrical device, thereby improving the safety of the electrical device.
  • FIG. 1 is a schematic diagram of the structure of an energy storage device provided in an embodiment of the present application.
  • FIG. 2 is an exploded view of the energy storage device in FIG. 1 from a first viewing angle.
  • FIG. 3 is an exploded view of the energy storage device in FIG. 2 from a second viewing angle.
  • FIG. 4 is an exploded view of the current collecting component of the energy storage device in FIG. 3 from a first perspective.
  • FIG. 5 is a schematic diagram of an expanded view of the adapter sheet of the current collecting component in FIG. 4 .
  • FIG. 6 is a top view of the adapter piece of the current collecting component in FIG. 2 .
  • FIG7 is a cross-sectional view of the adapter piece of the current collecting component in FIG6 along line A-A.
  • FIG. 8 is an exploded view of the current collecting component of the energy storage device in FIG. 4 from a second viewing angle.
  • FIG. 9 is a partial exploded view of the current collecting component of the energy storage device in FIG. 2 .
  • FIG. 10 is a cross-sectional view of the second insulating film of the current collecting member along line B-B in FIG. 8 .
  • FIG. 11 is an enlarged view of an insulating member of the current collecting member in FIG. 4 .
  • FIG. 12 is a cross-sectional view of the insulating member of the current collecting member in FIG. 11 along line C-C.
  • FIG. 13 is a top view of the energy storage device in FIG. 1 .
  • FIG14 is a cross-sectional view of the energy storage device in FIG13 along line D-D.
  • FIG. 15 is an enlarged view of portion I of the energy storage device in FIG. 14 .
  • Energy storage device 100 shell 10; opening 101; accommodating cavity 102; end cover assembly 20; end cover 201; pole 202; electrode assembly 30; battery cell 301; pole ear 302; first connecting section 3021; second connecting section 3022; third connecting section 3023; current collecting component 40; lower plastic part 50; limiting groove 501; limiting boss 502; adapter 1; first folding axis P1; second folding axis P2; adapter body 110; gap 120; arc structure 130; first connecting portion 11; first welding area 111; first non-welding area 112; second connecting portion 13; second welding area 131; second non-welding area 132; first connecting piece 133; second connecting piece 134; insertion space 135; bendable connecting portion 15; through hole 150; first straight segment 1501; first Corner segment 1502; second corner segment 1503; second straight segment 1504; third straight segment 1505; fourth straight segment 1506; first distance D1; second distance D2; third distance D3; fourth distance D4; fifth distance D5; sixth distance D6; seventh
  • energy storage device refers to a device that converts the chemical energy stored in itself into electrical energy, that is, a device that converts pre-stored energy into electrical energy that can be used externally.
  • fuel cell refers to a chemical device that directly converts the chemical energy of a fuel into electrical energy, also known as an electrochemical generator.
  • power battery refers to a power source that provides power for tools, mostly referring to batteries that power electric vehicles, electric trains, electric bicycles, and golf carts.
  • the electrical equipment of the embodiments of the present application include but are not limited to portable devices such as Bluetooth headsets, mobile phones, digital devices, tablet computers, and large equipment such as electric motorcycles, electric vehicles, and energy storage power stations, which are not limited in the embodiments of the present application.
  • the energy storage device provides electrical energy for the electrical equipment.
  • the energy storage device includes but is not limited to at least one of a power battery, a fuel cell, and a supercapacitor.
  • the power battery includes but is not limited to lithium-ion power batteries, nickel metal hydride power batteries, and supercapacitors.
  • FIG. 1 shows a structural schematic diagram of an energy storage device 100 provided in an embodiment of the present application
  • Figure 2 is an exploded view of the energy storage device 100 in Figure 1 from a first perspective
  • Figure 3 is an exploded view of the energy storage device 100 in Figure 2 from a second perspective.
  • the energy storage device 100 includes a housing 10, an end cap assembly 20, an electrode assembly 30, and a current collecting member 40.
  • the electrode assembly 30 and the current collecting member 40 are arranged in the housing 10, and the housing 10 is sealed and fixedly connected to the end cap assembly 20 to achieve the packaging of the electrode assembly 30 and the current collecting member 40.
  • the housing 10 has an opening 101 and a receiving cavity 102 connected to the opening 101.
  • the electrode assembly 30 is accommodated in the receiving cavity 102.
  • the accommodating cavity 102 is also used to store electrolyte so that the electrolyte can infiltrate the electrode assembly 30.
  • the end cap assembly 20 includes an end cap 201 and a pole 202 arranged on the cover plate, and the electrode assembly 30 includes a battery cell 301 and a pole ear 302 electrically connected to the battery cell 301.
  • the pole 202 is electrically connected to the pole ear 302 through the current collecting member 40.
  • the number of battery cells 301 may include one or more.
  • the electrode assembly 30 includes two battery cells 301 arranged side by side along the width direction of the energy storage device 100. It should be noted that the number of battery cells 301 is only for illustration and does not constitute a specific limitation. The number of battery cells 301 needs to be designed according to the actual product design.
  • the energy storage device 100 further includes a lower plastic part 50 connected to the end cover assembly 20.
  • the lower plastic part 50 is fixedly connected to the side of the end cover 201 close to the housing 10.
  • the lower plastic part 50 is provided with a limiting groove 501 for positioning the current collecting member 40.
  • the bottom of the limiting groove 501 is provided with a limiting boss 502 for abutting the second connecting portion 13, so that the assembly process of the current collecting member 40 is uniformly stressed, the positioning is reliable, and the assembly efficiency and accuracy are improved.
  • FIG. 1 is only to schematically describe the arrangement of the housing 10, the end cap assembly 20, the electrode assembly 30, the current collecting member 40 and the lower plastic part 50, and does not specifically limit the connection position, connection relationship and specific structure of each component.
  • FIG. 1 is only a structure of the energy storage device 100 illustrated in the embodiment of the present application, and does not constitute a specific limitation on the energy storage device 100.
  • the energy storage device 100 may include more or fewer components than those shown in FIG. 1, or combine certain components, or different components.
  • the energy storage device 100 may also include but is not limited to a temperature sensor, a battery management system, a connecting harness, and the like.
  • Figure 4 is a first-perspective exploded view of the current collecting component 40 of the energy storage device 100 in Figure 3;
  • Figure 5 is an expanded schematic diagram of the adapter plate 1 of the current collecting component 40 in Figure 4.
  • the current collecting component 40 includes an adapter plate 1 and an insulating member 3.
  • the adapter plate 1 includes a first connecting portion 11, a second connecting portion 13 and a bendable connecting portion 15 connecting the first connecting portion 11 and the second connecting portion 13.
  • the first connecting portion 11 and the second connecting portion 13 are arranged relative to each other.
  • the insulating member 3 is located between the first connecting portion 11 and the second connecting portion 13 which can be folded relative to each other.
  • the bendable connecting portion 15 is provided with a through hole 150 to form a first fuse portion 151 and a second fuse portion 152 connecting the first connecting portion 11 and the second connecting portion 13 on opposite sides of the through hole 150.
  • the through hole 150 has a first straight section 1501, a first corner section 1502, a second corner section 1503 and a second straight section 1504.
  • the first straight section 1501 is connected to the first corner section 1502 and is adjacent to the first fuse portion 151.
  • the second straight section 1504 is connected to the second corner section 1503 and is adjacent to the second fuse portion 152.
  • the first corner section 1502 and the second corner section 1503 are both rounded.
  • the distance between the first straight line segment 1501 and one end of the first fuse part 151 away from the first straight line segment 1501 is a first distance D1
  • the distance between the end of the first corner segment 1502 away from the first straight line segment 1501 and one end of the first fuse part 151 away from the first corner segment 1502 is a second distance D2
  • the first distance D1 is smaller than the second distance D2
  • the distance between the second straight line segment 1504 and one end of the second fuse part 152 away from the second straight line segment 1504 is a third distance D3
  • the distance between the end of the second corner segment 1503 away from the second straight line segment 1504 and one end of the second fuse part 152 away from the second corner segment 1503 is a fourth distance D4
  • the third distance D3 is smaller than the fourth distance D4.
  • the adapter sheet 1 is in the unfolded state, which means that the bendable connection portion 15 of the adapter sheet 1 is not bent, and the first connection portion 11, the second connection portion 13 and the bendable connection portion 15 are arranged on the same plane.
  • the adapter sheet 1 is in the unfolded state only to describe the accuracy of the through hole 150, and is not the product use state of the energy storage device 100.
  • the bendable connection portion 15 of the adapter sheet 1 is bent, and the first connection portion 11 and the second connection portion 13 are arranged opposite to each other.
  • the current collecting component 40 provided in the embodiment of the present application is provided with a through hole 150 on the bendable connecting portion 15, so that the huge current generated by the energy storage device 100 when out of control can act on the first fuse portion 151 and the second fuse portion 152, so as to fuse the first fuse portion 151 and the second fuse portion 152, so that an open circuit state is formed between the first connecting portion 11 and the second connecting portion 13, and no voltage is output, which protects the energy storage device 100 and does not cause explosion or fire.
  • the insulating member 3 can increase the insulation of the first connecting portion 11 and the second connecting portion 13 on both sides of the first fuse portion 151 and the second fuse portion 152, thereby further increasing the arc extinguishing effect; on the second hand, the first corner section 1502 and the second corner section 1503 of the through hole 150 are both rounded.
  • the distance between the first straight line segment 1501 and the end of the first fuse 151 away from the first straight line segment 1501 is smaller than the distance between the end of the first corner segment 1502 away from the first straight line segment 1501 and the end of the first fuse 151 away from the first corner segment 1502; the distance between the second straight line segment 1504 and the end of the second fuse 152 away from the second straight line segment 1504 is smaller than the distance between the end of the second corner segment 1503 away from the second straight line segment 1504 and the end of the second fuse 152 away from the second corner segment 1503, the fuse position of the adapter 1 is closer to the mechanical fatigue area of the bendable connecting portion 15, the fuse effect is easier to form, and the safety of the energy storage device 100 is improved.
  • the corners of the first connection portion 11, the second connection portion 13, and the bendable connection portion 15 are all rounded, so as to further avoid the problem of damage to the tab 302 caused by the adapter 1.
  • the through hole 150 is a square hole, such as a square hole or a rectangular hole.
  • the rectangular hole is a rectangular hole with an ellipse.
  • the through hole 150 can also be a diamond hole, a rectangular hole, a polygonal hole, an elliptical hole, a waist-shaped hole, a circular hole, etc., which is not specifically limited in this application.
  • the fusing direction F11 of the first fuse 151 and the fusing direction F12 of the second fuse 152 are both perpendicular to the bending direction F2 of the bendable connection portion 15, thereby ensuring that the fusing of the first fuse 151 and the second fuse 152 is easier to form and facilitating the bending of the adapter 1.
  • the fusing direction F11 of the first fuse 151 and the fusing direction F12 of the second fuse 152 refer to the direction perpendicular to the current direction of the adapter 1
  • the fusing direction F11 of the first fuse 151 refers to the direction from the first straight line segment 1501 to the end of the first fuse 151 away from the first straight line segment 1501
  • the fusing direction F12 of the second fuse 152 refers to the direction from the second straight line segment 1504 to the end of the second fuse 152 away from the second straight line segment 1504.
  • the current direction of the adapter 1 is parallel to the bending direction F2 of the bendable connection portion 15.
  • the ratio of the first distance D1 to the second distance D2 is 0.7-0.95, and the ratio of the third distance D3 to the fourth distance D4 is 0.7-0.95, thereby ensuring the fusing reliability of the first fuse part 151 and the second fuse part 152, and ensuring that the adapter 1 has It has the characteristics of high strength and not easy to break.
  • the ratio of the first distance D1 to the second distance D2 and the ratio of the third distance D3 to the fourth distance D4 are 0.7, 0.73, 0.75, 0.77, 0.8, 0.85, 0.88, 0.9, 0.93 or 0.95, etc.
  • the first distance D1 is 7 mm
  • the second distance D2 is 8 mm
  • the ratio of the first distance D1 to the second distance D2 is 0.88.
  • the number of the first corner segment 1502 and the second corner segment 1503 are both two, the two first corner segments 1502 are connected to the opposite ends of the first straight segment 1501, the two second corner segments 1503 are connected to the opposite ends of the second straight segment 1504, the through hole 150 also includes a third straight segment 1505 and a fourth straight segment 1506 connected to the first corner segment 1502 and the second corner segment 1503, the first straight segment 1501, the two first corner segments 1502, the two second corner segments 1503, the second straight segment 1504, the third straight segment 1505 and the fourth straight segment 1506 are surrounded to form the through hole 150. Therefore, the punching die made in this way has a simple structure and is more convenient to open and close the die. At the same time, the through hole 150 reduces the length of the bending position of the bendable connecting portion 15, which is more conducive to bending and forming.
  • the lengths of the first straight line segment 1501 and the second straight line segment 1504 are equal and are the first length L1
  • the distance between the third straight line segment 1505 and the fourth straight line segment 1506 is the fifth distance D5
  • the ratio of the first length L1 to the fifth distance D5 is 3/7-9/10, thereby ensuring that the mechanical fatigue zone of the bendable connection portion 15 that is easy to bend is highly coincident with the position where the first fuse portion 151 and the second fuse portion 152 are formed by fusing, and thus the first fuse portion 151 and the second fuse portion 152 are more likely to be blown.
  • the ratio of the first length L1 to the fifth distance D5 may be, but is not limited to, 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9, etc.
  • the lengths of the third straight line segment 1505 and the fourth straight line segment 1506 are equal and are the second length L2
  • the distance between the first straight line segment 1501 and the second straight line segment 1504 is the sixth distance D6
  • the ratio of the second length L2 to the sixth distance D6 is 0.4-0.9, thereby ensuring the fusing reliability of the first fuse 151 and the second fuse 152, and ensuring that the adapter 1 has the characteristics of high strength and not easy to break.
  • the ratio of the second length L2 to the sixth distance D6 can be but is not limited to 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9, etc.
  • the fillet radius of the first corner section 1502 and the second corner section 1503 are both 0.5mm-1.5mm, so as to avoid the problem of the first fuse part 151 and the second fuse part 152 being broken during the bending process.
  • the fillet radius of the first corner section 1502 and the second corner section 1503 is 0.5mm, 1.0mm, 1.5mm, etc. It should be noted that the fillet radius of the first corner section 1502 and the second corner section 1503 is only used for illustration and does not constitute a specific limitation. The fillet radius of the first corner section 1502 and the second corner section 1503 needs to be designed according to the actual product design.
  • the distance between one end of the first fuse 151 away from the first straight line segment 1501 and one end of the second fuse 152 away from the second straight line segment 1504 is the seventh distance D7
  • the ratio of the sixth distance D6 to the seventh distance D7 is 0.15-0.25, thereby ensuring that the first fuse 151 and the second fuse 152 are more likely to be blown, while avoiding the first fuse 151 and the second fuse 152 of the adapter 1 from stress fatigue or even fracture during the bending process, thereby improving the reliability of the adapter 1.
  • the ratio of the sixth distance D6 to the seventh distance D7 can be, but is not limited to, 0.15, 0.2 or 0.25, etc.
  • the sixth distance D6 is 3 mm and the seventh distance D7 is 18 mm.
  • the ratio of the sixth distance D6 to the seventh distance D7 is 0.17.
  • the sixth distance D6 of the through hole 150 gradually decreases from the middle of the through hole 150 toward both sides in the current direction of the adapter 1 (i.e., the direction from the third straight line segment 1505 to the fourth straight line segment 1506), thereby ensuring that the first fuse portion 151 and the second fuse portion 152 can be fused in the middle of the through hole 150, while ensuring the connection strength between the two side edges of the first fuse portion 151 and the second fuse portion 152 and the first connecting portion 11 and the second connecting portion 13, so as to further avoid the problem of breakage of the adapter 1 during the turning process.
  • the first connection portion 11, the insulating member 3 and the second connection portion 13 are stacked in the thickness direction of the current collecting member 40.
  • the overall structure of the current collecting member 40 is made more compact and space-saving;
  • the first connection portion 11 and the second connection portion 13 are separated by the insulating member 3 in the thickness direction of the adapter sheet 1, thereby avoiding The problem of short circuit occurs between the first connection part 11 and the second connection part 13, and the insulating member 3 plays a buffering role between the first connection part 11 and the second connection part 13, thereby enhancing the structural strength of the bendable connection part 15, thereby avoiding the problem of wrinkles or breakage of the bendable connection part 15 after bending.
  • the X-axis direction is defined as the length direction of the energy storage device 100
  • the Y-axis direction is defined as the width direction of the energy storage device 100
  • the Z-axis direction is defined as the height direction of the energy storage device 100.
  • the length direction of the current collecting component 40 and the length direction of the adapter plate 1 are parallel to the length direction of the energy storage device 100
  • the width direction of the current collecting component 40 and the width direction of the adapter plate 1 are parallel to the width direction of the energy storage device 100
  • the height direction of the current collecting component 40 i.e., the thickness direction of the current collecting component 40
  • the arrow direction of the Z-axis direction is taken as the top
  • the direction opposite to the arrow direction of the Z-axis direction is taken as the bottom.
  • the first connection portion 11 includes a first welding area 111
  • the second connection portion 13 includes a second welding area 131.
  • the orthographic projections of the first welding area 111 and the second welding area 131 on the first connection portion 11 are arranged at intervals, thereby further avoiding the risk of short circuit caused by contact between the first connection portion 11 and the second connection portion 13.
  • the orthographic projections of the first welding area 111 and the second welding area 131 on the first connection portion 11 are arranged adjacent to each other or at least partially overlapped, thereby shortening the length of the adapter 1, thereby saving space, reducing weight, reducing the material usage of the conductive connection component, and saving costs.
  • the bendable connection portion 15 includes but is not limited to a C-shaped structure, a U-shaped structure, a V-shaped structure or a wavy structure, so as to ensure that the first fuse portion 151 and the second fuse portion 152 can be bent smoothly, thereby improving the mass production yield of the product.
  • the first fuse portion 151 and the second fuse portion 152 are constructed as a C-shaped structure, so as to reduce the local bending of the first fuse portion 151 and the second fuse portion 152, reduce bending fatigue, prevent the first fuse portion 151 and the second fuse portion 152 from breaking, and reduce the space occupied by the first fuse portion 151 and the second fuse portion 152 in the width direction of the adapter 1 after bending.
  • Figure 6 is a top view of the adapter sheet 1 of the current collecting component 40 in Figure 2;
  • Figure 7 is a cross-sectional view of the adapter sheet 1 of the current collecting component 40 in Figure 6 along the A-A line.
  • the adapter sheet 1 is folded along the first folding axis P1 to form a two-layer adapter sheet body 110, and a gap 120 is formed between the two layers of the adapter sheet body 110.
  • the gap 120 can be used as a channel for the insertion of the tab 302, and can provide a stress release space for the adapter sheet body 110 to bend again, so as to improve the fracture resistance of the adapter sheet 1. It can be understood that if the gap 120 is too large, it is not conducive to the folding of the two layers of the adapter sheet body 110, and if the gap 120 is too small, the adapter sheet 1 is prone to breakage when it is bent along the first folding axis P1, and it is not conducive to the installation of the tab 302 and is easy to damage the tab 302.
  • the gap 120 is approximately 0.3 mm-3 mm, so as to ensure that the two layers of the adapter sheet body 110 are folded smoothly, and the tab 302 is conveniently installed and protected from damage.
  • the gap 120 is 0.3 mm, 0.5 mm, 0.7 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, etc. It should be noted that the size of the gap 120 is only for illustration and does not constitute a specific limitation. The gap 120 needs to be designed according to the actual product design.
  • the adapter sheet 1 is formed with an arc structure 130 at the first folding axis P1, thereby further avoiding the problem of the adapter sheet 1 being broken at the first folding axis P1, and facilitating the bending process and improving the assembly efficiency of the tab 302.
  • the adapter sheet 1 is folded 180 degrees along the first folding axis P1, thereby ensuring that the surface of the adapter sheet body 110 is flat and in a stacked structure, thereby ensuring that the two layers of the adapter sheet body 110 are easier to bend, and can absorb and disperse the stress during bending, and the adapter sheet 1 is folded, which can save space and increase the overall thickness of the adapter sheet 1.
  • the two-layer adapter sheet body 110 is folded along the second folding axis P2 to form the first connection part 11, the second connection part 13 and the bendable connection part 15, and the first folding axis P1 is parallel to the second folding axis P2. Therefore, on the first hand, the two-layer adapter sheet body 110 serves as an anti-bending thickened layer, which can improve the structural strength of the first fuse part 151 and the second fuse part 152 and reduce the damage to the wire caused by excessive bending angles; on the second hand, it avoids the intersection of the first folding axis P1 and the second folding axis P2, which may cause bending abnormalities and occupy a large space, thereby facilitating processing and reducing the scrap rate of production.
  • the adapter The sheet 1 is folded as a whole along the first folding axis P1 and then bent along the second folding axis P2, which facilitates the bending process, realizes the standardization of the bending process and improves the processing accuracy.
  • the two-layer adapter sheet body 110 is folded 180 degrees along the second folding axis P2, thereby ensuring that the surface of the first connecting part 11 and the second connecting part 13 is flat, which is convenient for welding with the pole 202 and the pole ear 302 respectively, improving the welding quality and saving space.
  • the first connection portion 11 of the current collecting component 40 is electrically connected to the pole 202
  • the second connection portion 13 of the current collecting component 40 is electrically connected to the pole lug 302, thereby ensuring the connection area between the first connection portion 11 and the pole 202 and the second connection portion 13 and the pole lug 302, improving the connection strength between the first connection portion 11 and the pole 202 and the second connection portion 13 and the pole lug 302, and preventing the first connection portion 11 from being separated from the pole 202 and the second connection portion 13 from being separated from the pole lug 302 during the use of the energy storage device 100.
  • the gap 120 includes an insertion space 135 for inserting the tab 302.
  • the adapter body 110 of the second connection portion 13 includes a first connection piece 133 and a second connection piece 134, and the insertion space 135 is formed between the first connection piece 133 and the second connection piece 134, so that the second connection portion 13 can clamp the tab 302, thereby preventing the tab 302 from being damaged and improving the stability of the tab 302.
  • the electrical connection between the tab 302 and the second connection portion 13 is achieved by welding, thereby improving the stability and reliability of the connection between the tab 302 and the second connection portion 13.
  • blanking is a stamping process that uses a die to separate part of the material of a part from another part of the material.
  • the adapter 1 is generally formed by blanking on a sheet plate, that is, the part includes a blanking part to be blanked and a part of the adapter 1 left after blanking.
  • the adapter 1 will form burrs on the edge of the adapter 1 under the blanking process.
  • the direction of the burr is the same as the blanking direction of the adapter 1.
  • the blanking direction of the adapter 1 is roughly perpendicular to the extension plane where the part is located, that is, the blanking section of the part is perpendicular to the extension plane where the part is located.
  • the first connecting piece 133 is close to the first connecting part 11 relative to the second connecting piece 134, and the second connecting piece 134 is far away from the first connecting part 11 relative to the first connecting piece 133.
  • the blanking direction of the first connecting piece 133 is toward the first connecting part 11, and is opposite to the blanking direction of the second connecting piece 134, so as to avoid the risk of the burrs on the blanking edge scratching the tab 302 and causing the tab 302 to rupture.
  • the punching direction of the first connecting piece 133 is upward, and the punching direction of the second connecting piece 134 is downward, so that the burrs on the edge of the first connecting piece 133 and the burrs on the edge of the second connecting piece 134 extend toward the side away from the plug-in space 135, thereby greatly reducing the risk of the burrs scratching the tab 302 and improving the production yield.
  • the adapter sheet 1 may include a piece of metal foil, thereby saving costs, reducing weight, and facilitating the bending of the adapter sheet 1.
  • the adapter sheet 1 may also include multiple pieces of metal foil. All metal foils are stacked and folded along the first folding axis P1 to form a two-layer adapter sheet body 110.
  • the thickness of the stacked structure is increased to better absorb and disperse the stress during bending, thereby avoiding the problem of fracture of the adapter sheet 1 during the bending process, and all metal foils are integrated into an integrated structure, thereby ensuring that the tab 302 is protected from damage and can be smoothly inserted between the two layers of the adapter sheet body 110.
  • the circuit between the first connection part 11 and the second connection part 13 can be quickly disconnected, and the insulating member 3 can further avoid the problem that the outermost metal foil creeps and causes the first connection part 11 and the second connection part 13 to be easily overlapped.
  • the metal foil can be but is not limited to aluminum foil, copper foil, etc.
  • the thickness T of the metal foil is 0.02 mm-0.4 mm, thereby enhancing the overall structural strength of the adapter sheet 1 and facilitating bending processing.
  • Figure 8 is a disassembled diagram of the current collecting component 40 of the energy storage device 100 in Figure 4 from a second perspective.
  • the insulating member 3 includes a limiting surface 310 for abutting against the bendable connection portion 15.
  • the bendable connection portion 15 is flipped and bent around the limiting surface 310.
  • the adapter sheet 1 can be a positive electrode adapter sheet.
  • the positive electrode adapter sheet is an aluminum foil sheet or an aluminum alloy foil sheet. Since the material of the aluminum foil sheet or the aluminum alloy foil sheet is relatively soft, the positive electrode adapter sheet is prone to breakage after excessive bending.
  • the adapter sheet 1 can also be a negative electrode adapter sheet.
  • Negative electrode adapter The sheet is a copper foil sheet or a copper alloy foil sheet, and the copper foil sheet or the copper alloy foil sheet is also prone to breakage after excessive bending. Therefore, the current collecting component 40 provided in the present application is based on the addition of an insulating part 3 between the first connecting part 11 and the second connecting part 13.
  • the insulating part 3 can buffer the bendable connecting part 15, so that the insulating part 3 can absorb and disperse the stress of the bendable connecting part 15 when bending, so as to improve the structural force strength of the bendable connecting part 15 during the bending process, and then effectively avoid the problem of the bendable connecting part 15 being broken due to excessive force, and extend the service life of the bendable connecting part 15.
  • the bendable connecting part 15 flips and bends around the limiting surface 310, so that the limiting surface 310 plays a role in guiding the bendable connecting part 15 to bend, and plays a supporting role for the bendable connecting part 15 during the bending process, so that the adapter sheet 1 is easier to bend.
  • the insulating member 3 is insulated from the adapter 1, the problem of short circuit caused by overlapping of the first connection portion 11 and the second connection portion 13 can be avoided.
  • the adapter 1 is foldable, so as to save space.
  • the limiting surface 310 is an arcuate surface, thereby avoiding the risk of scratching or hitting the adapter 1 due to the irregular limiting surface 310; or avoiding the problem of installation difficulties caused by the irregular limiting surface 310, thereby protecting the bendable connection portion 15.
  • the shape of the limiting surface 310 can also be, but not limited to, a wave shape, a polygon, etc., which is not specifically limited in this application.
  • the insulating member 3 includes a limiting body 31 and a movable flap 33 that is flippably connected to the limiting body 31.
  • the limiting body 31 is used to abut against the first connection portion 11, and the movable flap 33 is used to abut against the second connection portion 13.
  • the bending amplitude of the bendable connection portion 15 is limited by the bending amplitude of the movable flap 33 relative to the limiting body 31, so as to avoid the bendable connection portion 15 from breaking during the bending process and ensure that the adapter 1 is easy to bend; on the other hand, the movable flap 33 is flippably connected to the limiting body 31, so as to avoid the surface of the insulating member 3 from being pressed and deformed, so that the insulating member 3 has good pressure resistance, thereby improving the buffering effect of the insulating member 3 on the bendable connection portion 15.
  • the insulating member 3 may only include the limiting body 31, that is, the movable flap 33 may be omitted.
  • the first connection portion 11, the limiting body 31, the movable flap 33 and the second connection portion 13 are stacked in sequence in the thickness direction of the current collecting component 40, so that the overall structure of the current collecting component 40 is more compact, saving space, facilitating the installation and removal of the insulating part 3 and other beneficial effects.
  • the limiting body 31 and the movable flap 33 are integrally formed.
  • the insulating member 3 is configured as a bendable structure.
  • the insulating member 3 is configured as a spring that can be bent and unfolded.
  • the connection strength between the limiting body 31 and the movable flap 33 is improved, the assembly efficiency between the insulating member 3 and the adapter 1 is improved, and the processing and production process of the insulating member 3 is facilitated;
  • the movable flap 33 can weaken the squeezing force of the bendable connection portion 15 on the insulating member 3 to prevent the surface of the insulating member 3 from being pressed and deformed, so that the insulating member 3 has good pressure resistance, thereby improving the buffering effect of the insulating member 3 on the bendable connection portion 15.
  • the limiting body 31 and the movable flap 33 can also be rotatably connected together by means of a rotating shaft, a hinge, etc., which is not specifically
  • the first connection portion 11 includes a first welding area 111.
  • the pole 202 provided on the end cover 201 is mainly assembled to the first welding area 111 of the first connection portion 11 by welding or riveting.
  • Welding methods include but are not limited to resistance spot welding, ultrasonic welding, laser welding and other processes.
  • the first connection portion 11 and the pole 202 are assembled using a laser welding process.
  • resistance spot welding, laser welding and ultrasonic welding processes are widely used in this field and are not described in detail herein.
  • the adapter 1 is prone to produce welding slag during the welding process, and during the movement, the metal chips at the first welding area 111 are prone to fall off from the first connection portion 11. When the metal chips fall into the inside of the energy storage device 100, it is easy to cause a short circuit in the energy storage device 100, affecting the performance and safety of the energy storage device 100.
  • the limiting body 31 is provided with a window 311 exposing the first welding area 111.
  • the current collecting member 40 further includes a first insulating film 5.
  • the first insulating film 5 is disposed at the window 311 and covers the window 311.
  • the first insulating film 5 can prevent metal scraps such as welding slag and rusty debris at the first connecting portion 11 from falling into the energy storage device 100 and causing a short circuit, which helps to improve the yield and safety of the energy storage device 100; on the other hand, the first insulating film 5 It is also possible to further avoid the problem of short circuit caused by contact between the first connection portion 11 and the second connection portion 13 .
  • the insulating member 3 covers at least part of the through hole 150.
  • the insulating member 3 can still isolate the first connection part 11 and the second connection part 13 to prevent contact short circuit; on the second hand, after the first fuse part 151 and the second fuse part 152 are blown, the setting of the insulating member 3 can avoid the problem of the first connection part 11 and the second connection part 13 being overlapped again and causing a short circuit.
  • metal chips such as welding slag and rusty debris enter the interior of the energy storage device 100 through the through hole 150 and cause safety hazards.
  • Figure 9 is a partial exploded view of the current collecting component 40 of the energy storage device 100 in Figure 2.
  • the window 311 is square, that is, the limiting body 31 is formed with an edge portion for abutting the first insulating film 5 around the window 311, thereby increasing the contact area between the limiting body 31 and the first insulating film 5, that is, increasing the friction between the limiting body 31 and the first insulating film 5, thereby reducing the risk of the first insulating film 5 falling off or shifting, and having high safety in use and long service life.
  • the side wall of the window 311 and the first insulating film 5 are surrounded to form a receiving groove 312, and the receiving groove 312 is used to receive metal chips such as welding slag and rusty debris, so as to avoid the phenomenon of scratching the second connecting part 13 during movement, and to ensure that metal chips such as welding slag and rusty debris will not overflow the first insulating film 5.
  • This design saves the user's use cost, the energy storage device 100 has a high specific energy, and the energy storage device 100 has a compact structure, which saves installation space.
  • the window 311 may also be C-shaped, U-shaped, etc.
  • the shape of the window 311 may be designed according to the shape of the first welding area 111, and the present application does not make any specific limitation.
  • the corners of the limiting body 31 and the movable flip cover 33 of the insulating member 3 and the corners of the window 311 are all rounded, so as to prevent the insulating member 3 from damaging the first insulating film 5.
  • the length of the first insulating film 5 is greater than the length of the first welding area 111, and the width of the first insulating film 5 is greater than the width of the first welding area 111, thereby ensuring that the first insulating film 5 can block the welding slag, rusty debris and other debris at the first welding area 111.
  • the first connecting portion 11 also includes a first non-welding area 112 arranged around the first welding area 111.
  • the first insulating film 5 covers the first welding area 111 and the first non-welding area 112, thereby better realizing the insulation protection between the first connecting portion 11 and the second connecting portion 13, and ensuring that the first insulating film 5 can still cover the first welding area 111 after shifting a preset distance, so as to block welding slag, rusty debris and other debris, thereby improving the safety performance of the energy storage device 100.
  • the length of the first insulating film 5 is equal to the length of the first welding area 111 and/or the width of the first insulating film 5 is equal to the width of the first welding area 111, thereby saving production costs.
  • the first insulating film 5 also only covers the first welding area 111.
  • the material of the first insulating film 5 includes but is not limited to polypropylene (PP), polyphenylene sulfide (PPS), polyethylene terephthalate (PET), polyimide (PI), polystyrene (PS), cast polypropylene (CPP), polyethylene naphthalate two-formicacid glycol ester (PEN), polyvinyl chloride (P VC), Poly (ether-ether-ketone, PEEK), polyethersulfone resin (Polyethersulfone resin, PES), polyphenylene sulfone resin (Polyphenylene sulfone resins, PPSM), polyethylene (Polyethylene, PE) or a combination thereof.
  • PP polypropylene
  • PPS polyphenylene sulfide
  • PET polyethylene terephthalate
  • PI polyimide
  • PS polystyrene
  • CPP cast polypropylene
  • PEN polyethylene naphthalate two-formicacid glycol ester
  • the first insulating film 5 is a PET film.
  • PET film is a glossy plastic film with excellent physical properties, high rigidity, strength and ductility, puncture resistance, abrasion resistance, heat and ultra-low temperature resistance, chemical resistance, wear resistance, sealing and fragrance retention.
  • the first insulating film 5 can also be replaced by other materials such as PPS, PE, PVC, etc. according to actual needs.
  • the number of the first insulating film 5 can be selected to be a single layer or a multilayer.
  • the multilayer first insulating film 5 is, for example, two layers, three layers, four layers or more layers. It should be noted that the number of the first insulating film 5 is only for illustration and does not constitute a specific limitation.
  • the thickness of the first insulating film 5 is 0.05 mm-0.5 mm. The thickness of the first insulating film 5 needs to be determined according to the actual product design. If the first insulating film 5 is too thin, it may be easily damaged, while if the first insulating film 5 is too thick, it will increase the weight of the energy storage device 100 and reduce the energy density of the energy storage device 100.
  • the first insulating film 5 is clamped between the limiting body 31 and the movable flip cover 33, thereby reducing the phenomenon of displacement or detachment of the first insulating film 5 during the movement of the energy storage device 100, and improving the assembly efficiency of the first insulating film 5.
  • the limiting body 31 is fixed to the first connecting portion 11 through the first insulating film 5.
  • the first insulating film 5 is sticky, that is, the limiting body 31 is bonded to the first connecting portion 11 through the first insulating film 5, so that the limiting body 31 is clamped between the first insulating film 5 and the first connecting portion 11.
  • connection strength between the first insulating film 5 and the first connecting portion 11 is improved to further reduce the phenomenon of displacement or detachment of the first insulating film 5 during the movement of the energy storage device 100; on the other hand, the position of the insulating member 3 is limited to ensure that the bendable connecting portion 15 can be flipped and bent around the limiting surface 310 of the insulating member 3, and the assembly efficiency of the limiting body 31 is improved.
  • a first insulating film 5 is provided at the first welding area 111 to insulate and protect the first welding area 111 of the first connecting portion 11, so as to avoid safety accidents such as product explosion caused by the hidden danger of internal short circuit in the process and movement of the energy storage device 100.
  • the first insulating film 5 is attached to the first non-welding area 112 of the first connecting portion 11.
  • the first insulating film 5 is attached to the first welding area 111 of the first connecting portion 11; or, the first insulating film 5 is attached to the first welding area 111 and the first non-welding area 112 of the first connecting portion 11.
  • the first insulating film 5 can also be attached to the side of the limiting body 31 close to the movable flip cover 33, so as to further enhance the connection strength between the first insulating film 5 and the insulating member 3 and the first connecting portion 11, and reduce the phenomenon of displacement or detachment of the first insulating film 5 during the movement of the energy storage device 100.
  • the first insulating film 5 may not be sticky, that is, the first insulating film 5 is clamped between the limiting body 31 and the movable flip cover 33, thereby simplifying the assembly efficiency and saving costs.
  • the limiting body 31 is fixed on the first connection portion 11, so as to further improve the connection strength between the insulating member 3 and the adapter 1, so as to better fix the relative position of the insulating member 3, thereby avoiding the displacement of the insulating member 3 and the abnormal bending of the bendable connection portion 15 and the displacement or detachment of the first insulating film 5.
  • the limiting body 31 and the first connection portion 11 can be fixedly connected together by gluing, that is, a glue layer is provided between the limiting body 31 and the first connection portion 11, so that the glue layer can be further used to buffer the stress of the bendable connection portion 15, improve the bending efficiency and success rate, and simplify the overall structure of the current collecting component 40.
  • the limiting body 31 and the first connection portion 11 can also be fixedly connected together by, but not limited to, hot melting, bundling, mechanical connection, laser welding, ultrasonic welding, etc.
  • the movable flap 33 is movably arranged relative to the second connection portion 13, thereby facilitating the assembly and disassembly of the insulating member 3.
  • the movable flap 33 may also be fixed to the second connection portion 13; or, the limiting body 31 may also be movably arranged relative to the first connection portion 11.
  • at least one of the movable flap 33 and the limiting body 31 is fixedly arranged relative to the adapter 1, thereby avoiding the problem that the insulating member 3 is displaced and affects the bending of the adapter 1.
  • the current collecting member 40 further includes a second insulating film 6, which is clamped between the first insulating film 5 and the movable flap 33.
  • the second insulating film 6 can prevent metal chips such as welding slag and rusty debris at the second connecting portion 13 from falling into the energy storage device 100 and causing the risk of short circuit, thereby helping to improve the yield and safety of the energy storage device 100; on the other hand, the second insulating film 6 can further avoid the problem of short circuit caused by contact between the first connecting portion 11 and the second connecting portion 13.
  • the second connection portion 13 includes a second welding area 131.
  • a notch 330 is provided at a position of the movable flap 33 corresponding to the second welding area 131 to expose the second insulating film 6.
  • the second insulating film 6 can cover all the second welding areas 131, thereby further preventing the risk of metal scraps such as welding slag, rusty debris, etc. at the second connection portion 13 from falling into the energy storage device 100 and causing a short circuit, thereby improving the yield and safety of the energy storage device 100.
  • the notch 330 is provided at the movable flap 33 away from the second welding area 131.
  • the movable flip cover 33 is fixed to one end of the limiting body 31 , thereby ensuring the connection strength between the movable flip cover 33 and the limiting body 31 , and avoiding the problem of the movable flip cover 33 breaking during the flipping process.
  • the second connection portion 13 also includes a second non-welding area 132 arranged around the second welding area 131.
  • the second insulating film 6 covers the second welding area 131 and the second non-welding area 132, so as to better achieve insulation protection between the first connection portion 11 and the second connection portion 13, and ensure that the second insulating film 6 can still cover the second welding area 131 after shifting a preset distance, so as to block welding slag, rusty debris and other debris, and improve the safety performance of the energy storage device 100.
  • the length of the second insulating film 6 is equal to the length of the second welding area 131 and/or the width of the second insulating film 6 is equal to the width of the second welding area 131, thereby saving production costs.
  • the second insulating film 6 also only covers the second welding area 131.
  • Figure 10 is a cross-sectional view of the second insulating film 6 of the current collecting member 40 along the B-B line in Figure 8.
  • the second insulating film 6 includes a first film body 61 attached to the first connecting film and a second film body 62 folded and connected to the first film body 61, and the second film body 62 faces the second connecting portion 13, so as to better fix the relative positions of the first insulating film 5 and the second insulating film 6.
  • the first film body 61 can be fixed to the first insulating film 5 by bonding.
  • the second film body 62 can also be fixed to the movable flip cover 33 and/or the second connecting portion 13 by bonding, so as to further avoid the phenomenon of displacement of the first insulating film 5 and the second insulating film 6.
  • the second insulating film 6 can also be constructed as a single-layer film.
  • the second insulating film 6 can be omitted, the first insulating film 5 covers both the second welding area 131 and the first welding area 111, and the first insulating film 5 is constructed as a double-layer film, one layer of the insulating film covers the first welding area 111, and the other layer of the insulating film covers the second welding area 131.
  • Figure 11 is an enlarged view of the insulating member 3 of the current collecting component 40 in Figure 4;
  • Figure 12 is a cross-sectional view of the insulating member 3 of the current collecting component 40 in Figure 11 along the C-C line.
  • the thickness H of the insulating member 3 in the thickness direction of the current collecting component 40 is 1mm-3mm, that is, the overall thickness of the insulating member 3 is 0.03mm-5mm.
  • the bendable connecting portion 15 of the adapter sheet 1 is prevented from stress fatigue or even fracture during the bending process, thereby improving the reliability of the adapter sheet 1; on the other hand, the space occupied by the insulating member 3 in the thickness direction of the current collecting component 40 is reduced, which effectively reduces the thickness of the current collecting component 40 and further adapts to the market demand for miniaturization of the current collecting component 40.
  • the radius of curvature of the bendable connection portion 15 increases with the increase of the thickness H of the insulating member 3 in the thickness direction of the current collecting member 40. If the thickness H of the insulating member 3 in the thickness direction of the current collecting member 40 is too small, the radius of curvature of the bendable connection portion 15 is small, which leads to the problem of the bendable connection portion 15 breaking during the bending process; and if the thickness H of the insulating member 3 in the thickness direction of the current collecting member 40 is too large, the radius of curvature of the bendable connection portion 15 is large, which increases the weight of the energy storage device 100, increases the occupation of the internal space of the energy storage device 100 by the insulating member 3, and reduces the energy density of the energy storage device 100.
  • the thickness H of the insulating member 3 in the thickness direction of the current collecting member 40 is 2 mm, so as to better take into account the overall thickness of the insulating member 3 and the radius of curvature of the bendable connection portion 15.
  • the thickness H of the insulating member 3 in the thickness direction of the current collecting member 40 is 0.3 mm, 0.05 mm, 0.07 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc.
  • the thickness H of the insulating member 3 is only for illustration and does not constitute a specific limitation. The thickness H of the insulating member 3 needs to be designed according to the actual product design.
  • the ratio of the length C1 of the window 311 to the length C2 of the limiting body 31 is 0.2-0.5, so as to prevent the insulating part 3 from being displaced during the transportation vibration of the energy storage device 100 and being misaligned with the first connecting part 11, thereby effectively shielding the welding slag of the first connecting part 11 and improving the safety of the energy storage device 100.
  • the ratio of the length C1 of the window 311 to the length C2 of the limiting body 31 is 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, etc.
  • the length C1 of the window 311 is 8mm
  • the length C2 of the limiting body 31 is 26mm
  • the ratio of the length C1 of the window 311 to the length C2 of the limiting body 31 is 0.3.
  • the length C1 of the window 311 and the length C2 of the limiting body 31 are only for illustration and do not constitute a specific limitation.
  • the length C1 of the window 311 and the length C2 of the limiting body 31 It needs to be designed according to the actual product design.
  • the movable flap 33 can be an L-shaped structure as a whole.
  • the movable flap 33 includes a fixed portion 331 connected to the limiting body 31 and an extension portion 332 connected to the fixed portion 331 away from the limiting body 31.
  • the length C3 of the fixed portion 331 is greater than the length C4 of the extension portion 332 to ensure the connection strength between the fixed portion 331 and the limiting body 31.
  • the movable flap 33 can also be a C-shaped structure or a U-shaped structure as a whole, so as to further increase the clamping area between the movable flap 33 and the second insulating film 6, thereby reducing the phenomenon of displacement or detachment of the first insulating film 5 during the movement of the energy storage device 100.
  • the corners of the notch 330 are all rounded to prevent the insulating member 3 from damaging the second insulating film 6.
  • the width W1 of the fixed portion 331 is approximately 2mm-6mm
  • the width W2 of the extension portion 332 is 5mm-10mm.
  • the width W1 of the fixed portion 331 is 2mm, 3mm, 4mm, 5mm, 6mm, etc.
  • the width W2 of the extension portion 332 is 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc.
  • width W1 of the fixed portion 331 and the width W2 of the extension portion 332 are only for illustration and do not constitute a specific limitation.
  • the width W1 of the fixed portion 331 and the width W2 of the extension portion 332 need to be designed according to the actual product design.
  • the material of the first insulating film 5 is suitable for the material of the second insulating film 6.
  • the material of the second insulating film 6 may be different from the material of the first insulating film 5; or, it may be the same as the material of the first insulating film 5.
  • the color of the first insulating film 5 is different from the color of the second insulating film 6, so as to facilitate the distinction, improve the assembly efficiency and accuracy, and facilitate the judgment of whether the first insulating film 5 and the second insulating film 6 are missing, displaced, detached, etc. during machine detection or manual detection.
  • the first insulating film 5 is a blue insulating film and the second insulating film 6 is a green insulating film.
  • the color of the first insulating film 5 and the second insulating film 6 may also be the same; or, the colors of the first insulating film 5 and the second insulating film 6 are other colors respectively, which is not specifically limited in this application.
  • At least one of the first connection portion 11 and the second connection portion 13 is provided with an anchoring member for anchoring the first insulating film 5 and the second insulating film 6, so as to further prevent the first insulating film 5 and the second insulating film 6 from shifting or detaching.
  • the anchoring member can be configured as a hook structure or a protruding structure provided on the first connection portion 11 and the second connection portion 13, and the first insulating film 5 and the second insulating film 6 are provided with a hook hole matched with the hook structure or the protruding structure.
  • the orthographic projection of the notch 330 on the first insulating film 5 is spaced from the orthographic projection of the window 311 on the first insulating film 5, that is, the extension portion 332 of the movable flip cover 33 is blocked by the limiting body 31.
  • the risk of short circuit caused by contact between the first connecting portion 11 and the second connecting portion 13 is avoided; on the other hand, the risk of short circuit caused by contact between welding slag, rusty debris and other debris passing through the window 311 and the notch 330 and the first connecting portion 11 or the second connecting portion 13 is avoided; on the other hand, the phenomenon of displacement caused by the movable flip cover 33 pushing the first insulating film 5 and the second insulating film 6 is avoided.
  • the insulating member 3 is arranged at a position corresponding to the bendable connection portion 15, so as to ensure that the bendable connection portion 15 can be bent smoothly, thereby improving the mass production yield of the product.
  • the insulating member 3 is arranged in abutment with the bendable connection portion 15, so as to ensure that the bendable connection portion 15 can be turned around the insulating member 3 and bend.
  • the insulating member 3 and the bendable connection portion 15 are separated by a preset distance, so that the bendable connection portion 15 provides a deformation space.
  • the preset distance is approximately 1mm-3mm, so as to ensure that the bendable connection portion 15 can be turned around the insulating member 3 and bend.
  • the insulating member 3 is disposed in the overlapping area of the first connecting portion 11 and the second connecting portion 13, thereby ensuring that the first connecting portion 11 and the second connecting portion 13 can drive the insulating member 3 to press the first insulating film 5 and the second insulating film 6, thereby avoiding the problem of displacement of the first insulating film 5 and the second insulating film 6.
  • the insulating member 3 is a plastic structure.
  • the plastic structure is, for example, but not limited to, PET sheet, PE sheet, PS sheet, and other sheets.
  • the insulating effect of the insulating member 3 is achieved; on the other hand, the insulation is improved.
  • the buffering effect of the insulating member 3 is improved; on the other hand, the production cost is reduced; on the other hand, the friction with the first insulating film 5 and the second insulating film 6 is increased to prevent the first insulating film 5 and the second insulating film 6 from shifting.
  • the insulating member 3 can also be other structures with insulating effects, such as but not limited to asbestos or mica.
  • the insulating member 3 is configured as a sheet structure, so as to facilitate the flipping and folding of the movable flap 33 relative to the limiting body 31, and reduce the space occupied by the insulating member 3 on the current collecting component 40, thereby saving production costs; on the other hand, it ensures that the movable flap 33 has a flat surface after being folded relative to the limiting body 31, so as to better compress the first insulating film 5 and the second insulating film 6.
  • Figure 13 is a top view of the energy storage device 100 in Figure 1;
  • Figure 14 is a cross-sectional view of the energy storage device in Figure 13 along the D-D line;
  • Figure 15 is an enlarged view of part I of the energy storage device in Figure 14.
  • the first connecting portion 11 is flipped and folded relative to the second connecting portion 13, which can drive the movable flap 33 to flip and bend relative to the limiting body 31, so that the first insulating film 5 and the second insulating film 6 are pressed between the limiting body 31 and the movable flap 33, on the one hand, to avoid the first insulating film 5 and the second insulating film 6 from shifting; on the other hand, after the movable flap 33 is flipped and bent relative to the limiting body 31, the thickness of the insulating part 3 in the current collecting component 40 in the thickness direction is increased, so as to better absorb and disperse the stress during bending, thereby avoiding the problem of breakage of the adapter 1 during the bending process.
  • the tab 302 extends into the limiting groove 501 of the lower plastic part 50, and is accommodated in the insertion space 135 formed between the first connecting piece 133 and the second connecting piece 134, so that the first connecting piece 133 and the second connecting piece 134 clamp the tab 302.
  • the tab 302 includes a first connecting segment 3021 connected to the battery cell 301, a second connecting segment 3022 connected to the second connecting portion 13, and a third connecting segment 3023 connected to the first connecting segment 3021 and the second connecting segment 3022.
  • the first connecting segment 3021 and the second connecting segment 3022 are arranged at intervals, and both are bent in the same direction relative to the third connecting segment 3023, so that the bending degree of the tab 302 can be increased, effectively saving the internal space of the energy storage device 100, while preventing the tab 302 from contacting the adapter 1 when bending, preventing a short circuit in the energy storage device 100, and improving the energy density of the energy storage device 100.

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Abstract

本申请公开了一种集流构件、储能装置和用电设备。集流构件包括转接片和绝缘件。转接片包括第一连接部、第二连接部和可弯折连接部。可弯折连接部开设有通孔以形成第一熔断部和第二熔断部，绝缘件位于第一连接部和第二连接部之间，在转接片处于展开状态下，通孔具有第一直线段、第一转角段、第二转角段及第二直线段，第一转角段和第二转角段均呈圆角设置；第一直线段与第一熔断部远离第一直线段的一端的距离小于第一转角段远离第一直线段的一端与第一熔断部远离第一转角段的一端的距离；第二直线段与第二熔断部远离第二直线段的一端的距离小于第二转角段远离第二直线段的一端与第二熔断部远离第二转角段的一端的距离，使用安全性高、避免弯折断裂。

Description

集流构件、储能装置和用电设备 技术领域
本申请涉及储能技术领域，尤其涉及一种集流构件、储能装置和用电设备。
背景技术
随着电动设备的日益发展，对为其提供能量的储能电池的性能有着较高的要求。储能电池因具有高能量密度、高工作电压和长使用寿命等优点，已经得到广泛应用。
储能电池极柱能够通过转接片与极耳电连接，以充分利用储能电池的内部空间及改善动力电池装配质量。然而，现有的储能电池在短路时会产生巨大的电流，随之产生大量热量，可能会引起储能电池起火爆炸，造成安全事故。
发明内容
有鉴于此，本发明的一个目的在于提供一种集流构件、储能装置和用电设备，以解决现有技术中存在安全风险高的技术问题。
第一方面，本申请实施例提供一种集流构件，包括转接片和绝缘件，所述转接片包括第一连接部、第二连接部和连接所述第一连接部和所述第二连接部的可弯折连接部，所述第一连接部和所述第二连接部相对设置；所述绝缘件位于可相对翻折的所述第一连接部和所述第二连接部之间，所述可弯折连接部开设有通孔，以在所述通孔相对两侧形成连接所述第一连接部和所述第二连接部的第一熔断部和第二熔断部；在所述转接片处于展开状态下，所述通孔具有第一直线段、第一转角段、第二转角段及第二直线段，所述第一直线段与所述第一转角段连接并与所述第一熔断部邻接，所述第二直线段与所述第二转角段连接并与所述第二熔断部邻接，所述第一转角段和所述第二转角段均呈圆角设置；所述第一直线段与所述第一熔断部远离所述第一直线段的一端的距离为第一距离，所述第一转角段远离所述第一直线段的一端与所述第一熔断部远离所述第一转角段的一端的距离为第二距离，所述第一距离小于所述第二距离；所述第二直线段与所述第二熔断部远离所述第二直线段的一端的距离为第三距离，所述第二转角段远离所述第二直线段的一端与所述第二熔断部远离所述第二转角段的一端的距离为第四距离，所述第三距离小于所述第四距离。
本申请实施例提供的集流构件，第一方面，通过在可弯折连接部上开设有通孔，因此储能装置在失控时产生的巨大电流能够作用于第一熔断部和第二熔断部，以将第一熔断部和第二熔断部熔断，以使得第一连接部与第二连接部之间形成开路状态，没有电压输出，对储能装置起到保护作用，不会产生爆炸、起火的现象，并且绝缘件能够增加第一熔断部和第二熔断部两侧的第一连接部和第二连接部的绝缘，进而进一步增加灭弧效果；第二方面，通孔的第一转角段和第二转角段均呈圆角设置，从而避免转接片划伤极耳，提高生产良率；第三方面，通过设置第一直线段与第一熔断部远离第一直线段的一端的距离小于第一转角段远离第一直线段的一端与第一熔断部远离第一转角段的一端的距离；第二直线段与第二熔断部远离第二直线段的一端的距离小于第二转角段远离第二直线段的一端与第二熔断部远离第二转角段的一端的距离，从而使得转接片的熔断位置更加靠近可弯折连接部的机械疲劳区域，熔断效应更容易形成，提升储能装置的安全性。
结合第一方面，在第一方面的某些实现方式中，所述第一熔断部的熔断方向和所述第二熔断部的熔断方向均垂直于所述可弯折连接部的弯折方向，从而确保第一熔断部和第二熔断 部的熔断更容易发生，以及便利于转接片的弯折。
结合第一方面，在第一方面的某些实现方式中，所述第一距离与所述第二距离的比值为0.7-0.95；所述第三距离和所述第四距离的比值为0.7-0.95，从而保证第一熔断部和第二熔断部的熔断可靠性，同时保证转接片具有强度高、不易断裂的特性。
结合第一方面，在第一方面的某些实现方式中，所述第一转角段和所述第二转角段的数量均包括两个，两个所述第一转角段连接于所述第一直线段的相对两端，两个所述第二转角段连接于所述第二直线段的相对两端，所述通孔还包括与所述第一转角段和所述第二转角段连接的第三直线段和第四直线段，所述第一直线段、两个所述第一转角段、两个所述第二转角段、所述第二直线段、所述第三直线段及所述第四直线段合围形成所述通孔，由此，这样所制作而成的冲裁模具结构简单，并且开合模更加方便，同时，通过通孔使可弯折连接部的弯折位置所需弯折的长度减少，更加利于弯折成型。
结合第一方面，在第一方面的某些实现方式中，所述第一直线段和所述第二直线段的长度相等且为第一长度，所述第三直线段和所述第四直线段之间的距离为第五距离，所述第一长度与所述第五距离的比值为3/7-9/10，从而确保可弯折连接部易折弯的机械疲劳区与第一熔断部和第二熔断部的熔断形成的位置高度重合，进而第一熔断部和第二熔断部的熔断更容易发生。
结合第一方面，在第一方面的某些实现方式中，所述第三直线段和所述第四直线段的长度相等且为第二长度，所述第一直线段与所述第二直线段之间的距离为第六距离，所述第二长度与所述第六距离的比值为0.4-0.9，从而保证第一熔断部和第二熔断部的熔断可靠性，同时保证转接片具有强度高、不易断裂的特性。
结合第一方面，在第一方面的某些实现方式中，所所述第一熔断部远离所述第一直线段的一端与所述第二熔断部远离所述第二直线段的一端的距离为第六距离，所述第五距离与所述第六距离的比值为0.15-0.25，从而第一熔断部和第二熔断部的熔断更容易发生，同时避免转接片的第一熔断部和第二熔断部在弯折过程中发生应力疲劳甚至出现断裂的现象，提高了转接片的使用可靠性。
结合第一方面，在第一方面的某些实现方式中，所述第一连接部、所述绝缘件及所述第二连接部在所述集流构件的厚度方向上叠置。由此，一方面，使得集流构件的整体结构更紧凑，节省空间；另一方面，第一连接部与第二连接部在转接片的厚度方向上通过绝缘件隔开设置，从而避免第一连接部与第二连接部之间发生短路的问题，并且绝缘件在第一连接部与第二连接部之间起到缓冲作用，增强可弯折连接部的结构强度，从而避免可弯折连接部玩弯折后出现褶皱或发生断裂的问题。
结合第一方面，在第一方面的某些实现方式中，所述第一连接部包括第一焊接区，所述第二连接部包括第二焊接区，所述第一焊接区与所述第二焊接区在所述第一连接部上的正投影间隔设置，从而进一步避免第一连接部与第二连接部直接接触而引发短路的风险。
结合第一方面，在第一方面的某些实现方式中，所述可弯折连接部包括C字型结构、U字型结构、V字型结构或波浪型结构，从而确保第一熔断部和第二熔断部能够顺利弯折，提升产品量产良率。
结合第一方面，在第一方面的某些实现方式中，所述转接片沿第一对折轴线对折形成两层转接片主体，两层所述转接片主体之间形成间隙，两层所述转接片主体沿第二对折轴线对折形成所述第一连接部、所述第二连接部和所述可弯折连接部，所述第一对折轴线平行于所述第二对折轴线。由此，一方面，避免转接片在第一对折轴线处发生断裂的问题；另一方面， 间隙可以作为供极耳插入的通道，并且可以为转接片主体再次弯折提供应力释放空间，以提高转接片的抗断裂强度；再一方面，两层转接片主体作为抗弯折加厚层，可以提高第一熔断部和第二熔断部的结构强度，并降低弯折角度过大对线材带来的损伤，并且转接片作为一个整体沿第一对折轴线对折后再沿第二对折轴线弯折，方便弯折加工、实现弯折加工的标准化并提高加工精度；又一方面，避免第一对折轴线与第二对折轴线相交而出现弯折异常及占用空间大等问题，进而方便加工，降低了生产的报废率。
结合第一方面，在第一方面的某些实现方式中，所述转接片在所述第一对折轴线处形成有弧形结构，从而进一步避免转接片在第一对折轴线处发生断裂的问题，以及方便弯折加工及提高极耳组装效率。
结合第一方面，在第一方面的某些实现方式中，所述间隙包括供极耳插入的插接空间，所述第二连接部的转接片主体包括第一连接片和第二连接片，所述插接空间形成于所述第一连接片与所述第二连接片之间，从而实现第二连接部包夹极耳，避免极耳在进行超声波焊接时发生位移而导致虚焊、错焊的问题。
结合第一方面，在第一方面的某些实现方式中，所述第一连接片相对所述第二连接片靠近所述第一连接部，所述第二连接片相对所述第一连接片远离所述第一连接部，所述第一连接片的冲裁方向朝向所述第一连接部，并且与所述第二连接片的冲裁方向相反，从而避免冲裁边沿的毛刺划伤极耳而造成极耳破裂的风险。
结合第一方面，在第一方面的某些实现方式中，所述转接片包括一片或多片金属箔片，所有所述金属箔片层叠设置，并沿所述第一对折轴线对折后形成两层所述转接片主体。由此，在转接片仅包括一片金属箔片时，实现节约成本，减轻重量，以及便利于转接片的弯折；在转接片仅包括多片金属箔片时，通过将转接片配置为多层的叠置结构，使得叠置结构的厚度增加，以更好吸收、分散折弯时的应力，从而避免转接片在弯折过程中出现的断裂问题。此外，最内层的金属箔片发生熔断后，能够快速断开第一连接部和第二连接部之间的电路，绝缘件能够进一步避免最外层的金属箔片发生蠕变导致第一连接部和第二连接部容易搭接的问题。
结合第一方面，在第一方面的某些实现方式中，所述绝缘件包括用于与所述第一熔断部和/或所述第二熔断部抵接的限位面，所述第一熔断部和/或所述第二熔断部围绕所述限位面翻转并弯折。由此，一方面，可弯折连接部围绕限位面翻转并弯折，从而限位面起到导引可弯折连接部弯折的作用，并且对可弯折连接部在弯折过程中起到支撑作用，从而转接片更容易折弯；另一方面，绝缘件能够为可弯折连接部做缓冲处理，从而绝缘件能够吸收、分散可弯折连接部在弯折时的应力，以提高了可弯折连接部在弯折过程中的结构受力强度，进而能够有效地避免可弯折连接部受力过大而出现断裂的问题，延长了可弯折连接部的使用寿命。
结合第一方面，在第一方面的某些实现方式中，所述绝缘件包括限位本体和与所述限位本体可翻转连接的活动翻盖，所述限位本体用于与所述第一连接部抵接，所述活动翻盖用于与所述第二连接部抵接，一方面，通过活动翻盖相对限位本体的弯折幅度来限定可弯折连接部的弯折幅度，以避免可弯折连接部在弯折过程中发生断裂的现象；另一方面，活动翻盖可翻转连接于限位本体，从而避免绝缘件表面受压发生凹陷变形，使得绝缘件具有良好的抗压能力，进而提高绝缘件对可弯折连接部的缓冲效果。
结合第一方面，在第一方面的某些实现方式中，所述限位本体固定于所述第一连接部上，从而提高绝缘件与转接片之间的连接强度，以更好地对绝缘件的相对位置进行固定，进而避免绝缘件发生移位而出现可弯折连接部弯折异常。
结合第一方面，在第一方面的某些实现方式中，所述第一连接部包括第一焊接区，所述限位本体开设有暴露所述第一焊接区的窗口，所述集流构件还包括第一绝缘膜，所述第一绝缘膜设置于所述窗口处，并遮盖所述窗口。由此，一方面，第一绝缘膜能够阻挡第一连接部处的焊渣、生锈的碎渣等金属屑落入储能装置内部而引发短路的风险，有助于提高储能装置的良品率及安全性；另一方面，第一绝缘膜还能够进一步避免第一连接部与第二连接部接触而出现短路的问题。
结合第一方面，在第一方面的某些实现方式中，所述限位本体通过所述第一绝缘膜固定于所述第一连接部上。由此，一方面，提高第一绝缘膜与第一连接部之间的连接强度，以进一步降低第一绝缘膜在储能装置运动过程中发生移位或脱离的现象；另一方面，实现对绝缘件的位置进行限定，以确保可弯折连接部能够围绕绝缘件的限位面翻转并弯折，以及提高限位本体的组装效率。
结合第一方面，在第一方面的某些实现方式中，所述集流构件还包括第二绝缘膜，所述第二绝缘膜夹持于所述第一绝缘膜和所述活动翻盖之间。由此，一方面，提高第一绝缘膜与第一连接部之间的连接强度，以进一步降低第一绝缘膜在储能装置运动过程中发生移位或脱离的现象；另一方面，实现对绝缘件的位置进行限定，以确保可弯折连接部能够围绕绝缘件的限位面翻转并弯折，以及提高限位本体的组装效率。
结合第一方面，在第一方面的某些实现方式中，所述第二连接部包括第二焊接区，所述活动翻盖对应所述第二焊接区的位置处开设有缺口，以暴露出所述第二绝缘膜。由此，一方面，第二绝缘膜能够阻挡第二连接部处的焊渣、生锈的碎渣等金属屑落入储能装置内部而引发短路的风险，有助于提高储能装置的良品率及安全性；另一方面，第二绝缘膜还能够进一步避免第一连接部与第二连接部接触而出现短路的问题。
第二方面，本申请实施例提供一种储能装置，包括极耳、极柱和如上所述的集流构件。所述集流构件的所述第一连接部与所述极柱电连接，所述集流构件的所述第二连接部与所述极耳电连接，避免储能装置发生热失控，提升储能装置的安全性。
第三方面，本申请实施例提供一种用电设备，包括如上所述的储能装置，所述储能装置为所述用电设备提供电能，提升了用电设备的安全性。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的储能装置的结构示意图。
图2是图1中的储能装置的第一视角的分解图。
图3是图2中的储能装置的第二视角的分解图。
图4是图3中的储能装置的集流构件的第一视角的分解图。
图5是图4中的集流构件的转接片的展开示意图。
图6是图2中的集流构件的转接片的俯视图。
图7是图6中的集流构件的转接片沿A-A线的剖视图。
图8是图4中的储能装置的集流构件的第二视角的分解图。
图9是图2中的储能装置的集流构件的局部分解图。
图10是图8中的集流构件的第二绝缘膜沿B-B线的剖视图。
图11是图4中的集流构件的绝缘件的放大图。
图12是图11中的集流构件的绝缘件沿C-C线的剖视图。
图13是图1中的储能装置的俯视图。
图14是图13中的储能装置沿D-D线的剖视图。
图15是图14中的储能装置中的I部分的放大图。
主要附图标记说明。
储能装置100；壳体10；开口101；容纳腔102；端盖组件20；端盖201；极柱202；电极组件30；电芯301；极耳302；第一连接段3021；第二连接段3022；第三连接段3023；集流构件40；下塑胶件50；限位凹槽501；限位凸台502；转接片1；第一对折轴线P1；第二对折轴线P2；转接片主体110；间隙120；弧形结构130；第一连接部11；第一焊接区111；第一非焊接区112；第二连接部13；第二焊接区131；第二非焊接区132；第一连接片133；第二连接片134；插接空间135；可弯折连接部15；通孔150；第一直线段1501；第一转角段1502；第二转角段1503；第二直线段1504；第三直线段1505；第四直线段1506；第一距离D1；第二距离D2；第三距离D3；第四距离D4；第五距离D5；第六距离D6；第七距离D7；第一长度L1；第二长度L2；第一熔断部151；第二熔断部152；熔断方向F11；熔断方向F12；弯折方向F2；绝缘件3；限位面310；限位本体31；窗口311；收容槽312；活动翻盖33；缺口330；固定部331；延伸部332；厚度H；厚度T；长度C1；长度C2；长度C3；长度C4；宽度W1；宽度W2；第一绝缘膜5；第二绝缘膜6；第一膜体61；第二膜体62。
如下具体实施方式将结合上述附图进一步说明本申请。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
可以理解的是，本申请的说明书和权利要求书及上述附图中的术语仅是为了描述特定实施例，并非要限制本申请。本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别不同对象，而非用于描述特定顺序。除非上下文另有明确表述，否则单数形式“一”和“所述”也旨在包括复数形式。术语“包括”以及它们任何变形，意图在于覆盖不排他的包含。此外，本申请可以以多种不同的形式来实现，并不限于本实施例所描述的实施例。提供以下具体实施例的目的是便于对本申请公开内容更清楚透彻的理解，其中上、下、左、右等指示方位的字词仅是针对所示结构在对应附图中位置而言。在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“设置在……上”应做广义理解，例如，可以是固定连接，也可以是可拆卸地连接，或者一体地连接；可以是机械连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
说明书后续描述为实施本申请的较佳实施例，然而上述描述乃以说明本申请的一般原则为目的，并非用以限定本申请的范围。本申请的保护范围当视所附权利要求所界定者为准。
下面首先简单介绍本申请实施例中涉及的基础概念。
术语“储能装置”是指将本身储存的化学能转成电能的装置，即将预先储存起的能量转化为可供外用电能的装置。
术语“燃料电池”是指一种把燃料所具有的化学能直接转换成电能的化学装置，又称电化学发电器。
术语“动力电池”是指一种为工具提供动力来源的电源，多指为电动汽车、电动列车、电动自行车、高尔夫球车提供动力的蓄电池。
本申请实施例的用电设备包括但不局限于蓝牙耳机、手机、数码、平板电脑等便携设备，以及电动摩托、电动汽车、储能电站等大型设备，本申请实施例不做限定。储能装置为用电设备提供电能。储能装置包括但不局限于动力电池、燃料电池、超级电容等中的至少一种。动力电池包括但不局限于包括锂离子动力电池、金属氢化物镍动力电池和超级电容器等。
可以理解地，为了使本领域技术人员更好地理解储能装置，储能装置以动力电池为例进行详细说明。需要说明的是，储能装置为动力电池仅用于进行说明，本申请不做具体限定，例如，储能装置的产品类型也可以根据实际需要进行设定。请一并参阅图1至图3，图1所示为本申请实施例提供的储能装置100的结构示意图；图2是图1中的储能装置100的第一视角的分解图；图3是图2中的储能装置100的第二视角的分解图。储能装置100包括壳体10、端盖组件20、电极组件30和集流构件40。电极组件30和集流构件40设置于壳体10内，壳体10与端盖组件20密封固定连接，以实现对电极组件30和集流构件40的封装。具体地，壳体10具有开口101和与开口101相连通的容纳腔102。电极组件30收容于容纳腔102内。容纳腔102还用于存储电解液，以使得电解液能够浸润电极组件30。端盖组件20包括端盖201和设置于盖板上的极柱202，电极组件30包括电芯301和与电芯301电连接的极耳302。极柱202通过集流构件40与极耳302电连接。电芯301的数量可以包括一个或多个。示例性地，在本实施例中，电极组件30包括沿储能装置100的宽度方向并排设置的两个电芯301。需要说明的是，电芯301的数量仅仅是用于进行说明，不构成具体限定，电芯301的数量需要根据实际产品设计来设计。
在一些实施例中，储能装置100还包括与端盖组件20连接的下塑胶件50。具体地，下塑胶件50固定连接于端盖201靠近壳体10的一侧。下塑胶件50设置有定位集流构件40的限位凹槽501。限位凹槽501的槽底设置有用于抵接第二连接部13的限位凸台502，从而使得集流构件40的装配过程受力均匀、定位可靠、提高组装效率和准确率。
需要说明的是，图1的目的仅在于示意性地描述壳体10、端盖组件20、电极组件30、集流构件40及下塑胶件50之间的设置方式，并非是对各个元件的连接位置、连接关系及具体构造等做具体限定。图1仅是本申请实施例示意的储能装置100的结构，并不构成对储能装置100的具体限定。在本申请另一些实施例中，储能装置100可以包括比图1所示更多或更少的部件，或者组合某些部件，或者不同的部件，例如储能装置100还可以包括但不限于温度感应器、电池管理系统、连接线束等等。
请一并参阅图2、图4和图5，图4是图3中的储能装置100的集流构件40的第一视角的分解图；图5是图4中的集流构件40的转接片1的展开示意图。集流构件40包括转接片1和绝缘件3。转接片1包括第一连接部11、第二连接部13和连接第一连接部11和第二连接部13的可弯折连接部15。第一连接部11和第二连接部13之间相对设置。绝缘件3位于可相对翻折的第一连接部11和第二连接部13之间。可弯折连接部15开设有通孔150，以在通孔150相对两侧形成连接第一连接部11和第二连接部13的第一熔断部151和第二熔断部 152。在转接片1处于展开状态下，通孔150具有第一直线段1501、第一转角段1502、第二转角段1503及第二直线段1504，第一直线段1501与第一转角段1502连接并与第一熔断部151邻接，第二直线段1504与第二转角段1503连接并与第二熔断部152邻接，第一转角段1502和第二转角段1503均呈圆角设置。第一直线段1501与第一熔断部151远离第一直线段1501的一端的距离为第一距离D1，第一转角段1502远离第一直线段1501的一端与第一熔断部151远离第一转角段1502的一端的距离为第二距离D2，第一距离D1小于第二距离D2；第二直线段1504与第二熔断部152远离第二直线段1504的一端的距离为第三距离D3，第二转角段1503远离第二直线段1504的一端与第二熔断部152远离第二转角段1503的一端的距离为第四距离D4，第三距离D3小于第四距离D4。
需要说明的是，为了方便说明本申请的技术方案，参看图5，转接片1处于展开状态是指转接片1的可弯折连接部15未弯折的状态，此时第一连接部11、第二连接部13及可弯折连接部15共面设置。转接片1处于展开状态仅仅为了描述通孔150的准确性，并不是储能装置100的产品使用状态。在使用状态下，转接片1的可弯折连接部15弯折，且第一连接部11与第二连接部13相对设置。
本申请实施例提供的集流构件40，第一方面，通过在可弯折连接部15上开设有通孔150，因此储能装置100在失控时产生的巨大电流能够作用于第一熔断部151和第二熔断部152，以将第一熔断部151和第二熔断部152熔断，以使得第一连接部11与第二连接部13之间形成开路状态，没有电压输出，对储能装置100起到保护作用，不会产生爆炸、起火的现象，并且绝缘件3能够增加第一熔断部151和第二熔断部152两侧的第一连接部11和第二连接部13的绝缘，进而进一步增加灭弧效果；第二方面，通孔150的第一转角段1502和第二转角段1503均呈圆角设置，从而避免转接片1划伤极耳302，提高生产良率；第三方面，通过设置第一直线段1501与第一熔断部151远离第一直线段1501的一端的距离小于第一转角段1502远离第一直线段1501的一端与第一熔断部151远离第一转角段1502的一端的距离；第二直线段1504与第二熔断部152远离第二直线段1504的一端的距离小于第二转角段1503远离第二直线段1504的一端与第二熔断部152远离第二转角段1503的一端的距离，从而使得转接片1的熔断位置更加靠近可弯折连接部15的机械疲劳区域，熔断效应更容易形成，提升储能装置100的安全性。
在一些实施例中，第一连接部11、第二连接部13及可弯折连接部15的边角均呈圆角设置，从而进一步避免转接片1对极耳302造成损伤的问题。在本实施例中，通孔150为方形孔，例如正方形孔或长方形孔。可选地，示例性地，在本实施例中，长方形孔为带椭圆长方形孔。在其它一些实施例中，通孔150还可以为菱形孔，矩形孔，多边形孔、椭圆形孔、腰形孔、圆形孔等，本申请不作具体限定。
可选地，在一些实施例中，第一熔断部151的熔断方向F11和第二熔断部152的熔断方向F12均垂直于可弯折连接部15的弯折方向F2，从而确保第一熔断部151和第二熔断部152的熔断更易形成，以及便利于转接片1的弯折。需要说明的是，第一熔断部151的熔断方向F11和第二熔断部152的熔断方向F12是指垂直于转接片1的电流方向的方向，第一熔断部151的熔断方向F11是指第一直线段1501到第一熔断部151远离第一直线段1501的一端的方向，第二熔断部152的熔断方向F12是指第二直线段1504到第二熔断部152远离第二直线段1504的一端的方向。转接片1的电流方向平行于可弯折连接部15的弯折方向F2。
第一距离D1与第二距离D2的比值为0.7-0.95，第三距离D3和第四距离D4的比值为0.7-0.95，从而保证第一熔断部151和第二熔断部152的熔断可靠性，同时保证转接片1具 有强度高、不易断裂的特性。例如，第一距离D1与第二距离D2的比值及第三距离D3和第四距离D4的比值为0.7、0.73、0.75、0.77、0.8、0.85、0.88、0.9、0.93或0.95等等。示例性地，在本实施例中，第一距离D1为7mm，第二距离D2为8mm，第一距离D1与第二距离D2的比值为0.88。
第一转角段1502和第二转角段1503的数量均包括两个，两个第一转角段1502连接于第一直线段1501的相对两端，两个第二转角段1503连接于第二直线段1504的相对两端，通孔150还包括与第一转角段1502和第二转角段1503连接的第三直线段1505和第四直线段1506，第一直线段1501、两个第一转角段1502、两个第二转角段1503、第二直线段1504、第三直线段1505及第四直线段1506合围形成通孔150。由此，这样所制作而成的冲裁模具结构简单，并且开合模更加方便，同时，通过通孔150使可弯折连接部15的弯折位置所需弯折的长度减少，更加利于弯折成型。
第一直线段1501和第二直线段1504的长度相等且为第一长度L1，第三直线段1505和第四直线段1506之间的距离为第五距离D5，第一长度L1与第五距离D5的比值为3/7-9/10，从而确保可弯折连接部15易折弯的机械疲劳区与第一熔断部151和第二熔断部152的熔断形成的位置高度重合，进而第一熔断部151和第二熔断部152的熔断更容易发生。例如，第一长度L1与第五距离D5的比值可以为但不局限于0.4、0.5、0.6、0.7、0.8或0.9等等。
在一些实施例中，第三直线段1505和第四直线段1506的长度相等且为第二长度L2，第一直线段1501与第二直线段1504之间的距离为第六距离D6，第二长度L2与第六距离D6的比值为0.4-0.9，从而保证第一熔断部151和第二熔断部152的熔断可靠性，同时保证转接片1具有强度高、不易断裂的特性。例如，第二长度L2与第六距离D6的比值可以为但不局限于0.4、0.5、0.6、0.7、0.8或0.9等等。
其中，第一转角段1502和第二转角段1503的圆角半径均为0.5mm-1.5mm，以避免第一熔断部151和第二熔断部152在弯折过程中发生断裂的问题。例如，在一些实施例中，第一转角段1502和第二转角段1503的圆角半径为0.5mm、1.0mm、1.5mm等等。需要说明的是，第一转角段1502和第二转角段1503的圆角半径仅仅是用于进行说明，不构成具体限定，第一转角段1502和第二转角段1503的圆角半径需要根据实际产品设计来设计。
在一些实施例中，第一熔断部151远离第一直线段1501的一端与第二熔断部152远离第二直线段1504的一端的距离为第七距离D7，第六距离D6与第七距离D7的比值为0.15-0.25，从而确保第一熔断部151和第二熔断部152的熔断更容易发生，同时避免转接片1的第一熔断部151和第二熔断部152在弯折过程中发生应力疲劳甚至出现断裂的现象，提高了转接片1的使用可靠性。例如，第六距离D6与第七距离D7的比值可以为但不局限于0.15、0.2或0.25等等。示例性地，在本实施例中，第六距离D6为3mm，第七距离D7为18mm。第六距离D6与第七距离D7的比值为0.17。
在一些实施例中，通孔150的第六距离D6在转接片1的电流方向(即自第三直线段1505到第四直线段1506的方向)上自通孔150的中部朝两侧的方向逐渐递减，从而确保第一熔断部151和第二熔断部152在通孔150的中部能够发生熔断，同时保证第一熔断部151和第二熔断部152的两侧边与第一连接部11和第二连接部13之间的连接强度，以进一步避免转接片1在翻转弯折过程中出现断裂的问题。
可选地，在本实施例中，第一连接部11、绝缘件3及第二连接部13在集流构件40的厚度方向上叠置。由此，一方面，使得集流构件40的整体结构更紧凑，节省空间；另一方面，第一连接部11与第二连接部13在转接片1的厚度方向上通过绝缘件3隔开设置，从而避免 第一连接部11与第二连接部13之间发生短路的问题，并且绝缘件3在第一连接部11与第二连接部13之间起到缓冲作用，增强可弯折连接部15的结构强度，从而避免可弯折连接部15弯折后出现褶皱或发生断裂的问题。
需要说明的是，为了更清楚地描述，将X轴方向定义为储能装置100的长度方向，Y轴方向定义为储能装置100的宽度方向，Z轴方向定义为储能装置100的高度方向。其中，集流构件40的长度方向及转接片1的长度方向为平行储能装置100的长度方向的方向，集流构件40的宽度方向及转接片1的宽度方向为平行储能装置100的宽度方向的方向，集流构件40的高度方向(即集流构件40的厚度方向)及转接片1的高度方向为平行储能装置100的高度方向的方向。示例性地，以Z轴方向的箭头方向为上，与Z轴方向的箭头方向相反的方向为下。
第一连接部11包括第一焊接区111，第二连接部13包括第二焊接区131。第一焊接区111与第二焊接区131在第一连接部11上的正投影间隔设置，从而进一步避免第一连接部11与第二连接部13接触而引发短路的风险。在一些实施例中，第一焊接区111与第二焊接区131在第一连接部11上的正投影邻接设置或者至少部分重叠设置，从而缩短了转接片1的长度，进而节省空间、减轻重量、降低导电连接构件的材料用量、节省成本。
可弯折连接部15包括但不局限于C字型结构、U字型结构、V字型结构或波浪型结构，从而确保第一熔断部151和第二熔断部152能够顺利弯折，提升产品量产良率。示例性地，在本实施例中，第一熔断部151和第二熔断部152构造为C字型结构，从而降低第一熔断部151和第二熔断部152局部弯折，减小弯曲疲劳，防止第一熔断部151和第二熔断部152断裂，以及减小第一熔断部151和第二熔断部152弯折后在转接片1的宽度方向上的占用空间。
请一并参阅图6至图7，图6是图2中的集流构件40的转接片1的俯视图；图7是图6中的集流构件40的转接片1沿A-A线的剖视图。转接片1沿第一对折轴线P1对折形成两层转接片主体110，两层转接片主体110之间形成间隙120。由此，一方面，避免转接片1在第一对折轴线P1处发生断裂的问题；另一方面，间隙120可以作为供极耳302插入的通道，并且可以为转接片主体110再次弯折提供应力释放空间，以提高转接片1的抗断裂强度。可以理解地，间隙120太大则不利于两层转接片主体110对折，间隙120太小则转接片1沿第一对折轴线P1弯折时容易发生断裂，且不利于极耳302安装并容易损伤极耳302。可选地，间隙120大致为0.3mm-3mm，从而确保两层转接片主体110对折顺畅，以及方便安装极耳302并保护极耳302免受损坏。例如，在一些实施例中，间隙120为0.3mm、0.5mm、0.7mm、1mm、1.5mm、2mm、2.5mm、3mm等等。需要说明的是，间隙120的尺寸仅仅是用于进行说明，不构成具体限定，间隙120需要根据实际产品设计来设计。
转接片1在第一对折轴线P1处形成有弧形结构130，从而进一步避免转接片1在第一对折轴线P1处发生断裂的问题，以及方便弯折加工及提高极耳302组装效率。其中，转接片1沿第一对折轴线P1对折180度，从而确保转接片主体110的表面平整且呈叠置结构，从而确保两层转接片主体110更容易折弯，可吸收、分散折弯时的应力，且转接片1为折叠设置，可节省空间、增加转接片1的整体厚度。
两层转接片主体110沿第二对折轴线P2对折形成第一连接部11、第二连接部13和可弯折连接部15，第一对折轴线P1平行于第二对折轴线P2。由此，第一方面，两层转接片主体110作为抗弯折加厚层，可以提高第一熔断部151和第二熔断部152的结构强度，并降低弯折角度过大对线材带来的损伤；第二方面，避免第一对折轴线P1与第二对折轴线P2相交二出现弯折异常及占用空间大等问题，进而方便加工，降低了生产的报废率。第三方面，转接 片1作为一个整体沿第一对折轴线P1对折后再沿第二对折轴线P2弯折，方便弯折加工、实现弯折加工的标准化并提高加工精度。其中，两层转接片主体110沿第二对折轴线P2对折180度，从而确保第一连接部11和第二连接部13的表面平整，方便分别与极柱202和极耳302进行焊接，提高焊接质量，以及节省空间。
集流构件40的第一连接部11与极柱202电连接，集流构件40的第二连接部13与极耳302电连接，从而确保第一连接部11与极柱202及第二连接部13与极耳302之间的连接面积，提高第一连接部11与极柱202及第二连接部13与极耳302之间的连接强度，防止在储能装置100的使用过程中第一连接部11与极柱202分离及第二连接部13与极耳302之间分离。
具体地，间隙120包括供极耳302插入的插接空间135。第二连接部13的转接片主体110包括第一连接片133和第二连接片134，插接空间135形成于第一连接片133与第二连接片134之间，从而实现第二连接部13包夹极耳302，进而避免极耳302免受损伤，提升极耳302稳固度。在极耳302插接至第一连接片133和第二连接片134之间形成的插接空间135后，再通过焊接方式实现极耳302与第二连接部13的电连接，从而提高了极耳302与第二连接部13之间连接的稳固性和可靠性。
可以理解地，冲裁是利用冲模使零件的部分材料与另一部分材料分离的一种冲压工序。转接片1一般是通过在片状板材上冲裁形成，即零件包括待冲裁掉的冲裁部分和冲裁后留下的转接片1部分。转接片1在冲裁工艺下会在转接片1的边缘形成毛刺。需要说明的是，毛刺的朝向与转接片1的冲裁方向相同。示例性地，在本实施例中，转接片1的冲裁方向大致垂直于零件所在的延伸平面，即零件的冲裁断面垂直于零件所在的延伸平面。可选地，第一连接片133相对第二连接片134靠近第一连接部11，第二连接片134相对第一连接片133远离第一连接部11，第一连接片133的冲裁方向朝向第一连接部11，并且与第二连接片134的冲裁方向相反，从而避免冲裁边沿的毛刺划伤极耳302而造成极耳302破裂的风险。具体地，第一连接片133的冲裁方向朝上，第二连接片134的冲裁方向朝下，以使得第一连接片133的边缘的毛刺及第二连接片134的边缘的毛刺朝远离插接空间135一侧延伸，从而大大降低毛刺划伤极耳302的风险，提高生产良率。
示例性地，在本实施例中，转接片1可以包括一片金属箔片，从而节约成本，减轻重量，以及便利于转接片1的弯折。在其它一些实施例中，转接片1还可以包括多片金属箔片。所有金属箔片层叠设置，并沿所述第一对折轴线P1对折后形成两层转接片主体110。由此，通过将转接片1配置为多层的叠置结构，使得叠置结构的厚度增加，以更好吸收、分散折弯时的应力，从而避免转接片1在弯折过程中出现的断裂问题，且所有金属箔片集成为一体式结构，从而确保极耳302免受损坏，并能够顺畅插入至两层转接片主体110之间。此外，最内层的金属箔片发生熔断后，能够快速断开第一连接部11和第二连接部13之间的电路，绝缘件3能够进一步避免最外层的金属箔片发生蠕变导致第一连接部11和第二连接部13容易搭接的问题。其中，金属箔片可以为但不局限于铝箔片、铜箔片等。金属箔片的厚度T为0.02mm-0.4mm，从而增强转接片1的整体结构强度，并方便弯折加工。
请一并参阅图2、图4和图8，图8是图4中的储能装置100的集流构件40的第二视角的分解图。绝缘件3包括用于与可弯折连接部15抵接的限位面310。可弯折连接部15围绕限位面310翻转并弯折。可以理解地，示例性地，在本实施例中，转接片1可以为正极转接片。正极转接片为铝箔片或铝合金箔片。由于铝箔片或铝合金箔片的材质偏软，因此正极转接片过度弯折后容易发生断裂。在一些实施例中，转接片1也可以为负极转接片。负极转接 片为铜箔片或铜合金箔片，铜箔片或铜合金箔片过度弯折后也容易发生断裂。由此，本申请提供的集流构件40，基于在第一连接部11和第二连接部13之间增设绝缘件3，第一方面，绝缘件3能够为可弯折连接部15做缓冲处理，从而绝缘件3能够吸收、分散可弯折连接部15在弯折时的应力，以提高了可弯折连接部15在弯折过程中的结构受力强度，进而能够有效地避免可弯折连接部15受力过大而出现断裂的问题，延长了可弯折连接部15的使用寿命。第二方面，可弯折连接部15围绕限位面310翻转并弯折，从而限位面310起到导引可弯折连接部15弯折的作用，并且对可弯折连接部15在弯折过程中起到支撑作用，从而转接片1更容易折弯。第三方面，由于绝缘件3与转接片1绝缘设置，因此可以避免第一连接部11与第二连接部13搭接而出现短路的问题。第四方面，转接片1折叠设置，从而可节省空间。
可选地，在一些实施例中，限位面310为弧形面，从而避免因不规则的限位面310产生剐蹭或撞击转接片1的风险；或者，避免因不规则的限位面310而导致安装困难的问题，进而实现对可弯折连接部15进行保护。在其它一些实施例中，限位面310的形状还可以呈但不局限于波浪形、多边形等，本申请不做具体限定。
示例性地，在本实施例中，绝缘件3包括限位本体31和与限位本体31可翻转连接的活动翻盖33，限位本体31用于与第一连接部11抵接，活动翻盖33用于与第二连接部13抵接，一方面，通过活动翻盖33相对限位本体31的弯折幅度来限定可弯折连接部15的弯折幅度，以避免可弯折连接部15在弯折过程中发生断裂的现象，以及确保转接片1容易折弯；另一方面，活动翻盖33可翻转连接于限位本体31，从而避免绝缘件3表面受压发生凹陷变形，使得绝缘件3具有良好的抗压能力，进而提高绝缘件3对可弯折连接部15的缓冲效果。在一些实施例中，绝缘件3可以仅包括限位本体31，即活动翻盖33可以省略。
可选地，在一些实施例中，第一连接部11、限位本体31、活动翻盖33及第二连接部13在集流构件40的厚度方向上依次叠置设置，从而使得集流构件40的整体结构更紧凑，节省空间、便于装取绝缘件3等有益效果。
在本实施例中，限位本体31与活动翻盖33一体成型。绝缘件3配置为可弯折结构。例如，绝缘件3被配置为可弯折和展开的弹片。由此，一方面，提高了限位本体31与活动翻盖33之间的连接强度、提高了绝缘件3与转接片1之间的组装效率，以及方便绝缘件3的加工生产工艺；另一方面，活动翻盖33能够削弱绝缘件3受到可弯折连接部15的挤压力，以防止绝缘件3表面受压发生凹陷变形，使得绝缘件3具有良好的抗压能力，进而提高绝缘件3对可弯折连接部15的缓冲效果。在一些实施例中，限位本体31与活动翻盖33还可以通过转轴、合页等方式转动连接在一起，本申请不作具体限定。
在一些实施例中，第一连接部11包括第一焊接区111。端盖201上设置的极柱202主要通过焊接方式或铆接方式装配于第一连接部11的第一焊接区111。焊接方式包括但不局限于电阻点焊、超声波焊接、激光焊接等工艺。示例性地，在本实施例中，第一连接部11与极柱202采用激光焊接工艺进行装配。需要说明的是，电阻点焊、激光焊接工艺及超声焊接工艺在本领域内应用广泛，在此不另作详述。可以理解地，转接片1在焊接过程中容易产生焊渣，并且在运动过程中，第一焊接区111处的金属屑容易从第一连接部11上脱落，当金属屑掉落在储能装置100内部时，容易造成储能装置100内短路，影响储能装置100的性能与安全。
可选地，在一些实施例，限位本体31开设有暴露第一焊接区111的窗口311。集流构件40还包括第一绝缘膜5。第一绝缘膜5设置于窗口311处，并遮盖窗口311。由此，一方面，第一绝缘膜5能够阻挡第一连接部11处的焊渣、生锈的碎渣等金属屑落入储能装置100内部而引发短路的风险，有助于提高储能装置100的良品率及安全性；另一方面，第一绝缘膜5 还能够进一步避免第一连接部11与第二连接部13接触而出现短路的问题。
在一些实施例中，绝缘件3遮盖至少部分通孔150。由此，第一方面，确保在第一绝缘膜5和第二绝缘膜6发生位移后，绝缘件3仍能够将第一连接部11和第二连接部13隔离设置，以防止接触短路；第二方面，第一熔断部151和第二熔断部152熔断后，绝缘件3的设置能够避免第一连接部11与第二连接部13再次搭接而引发短路的问题。第三方面，避免焊渣、生锈的碎渣等金属屑通过通孔150进入储能装置100的内部而引发安全隐患的问题。
请一并参阅图4、图8和图9，图9是图2中的储能装置100的集流构件40的局部分解图。在本实施例中，窗口311呈方形，即限位本体31在窗口311的四周形成有用于抵接第一绝缘膜5的边缘部，从而增大了限位本体31与第一绝缘膜5的接触面积，即增大限位本体31与第一绝缘膜5之间的摩擦力，进而降低第一绝缘膜5出现脱落或移位的风险，使用安全性高，寿命长。窗口311的侧壁与第一绝缘膜5合围形成收容槽312，收容槽312用于收纳焊渣、生锈的碎渣等金属屑，从而避免在运动过程中出现剐蹭第二连接部13的现象，以及确保焊渣、生锈的碎渣等金属屑不会溢出第一绝缘膜5，这种设计为用户节省了使用成本，储能装置100的比能量高，储能装置100的结构紧凑，节省了安装空间。
在一些实施例中，窗口311还可以呈C字型、U字型等，窗口311的形状可以根据第一焊接区111的形状来设计，本申请不做具体限定。可选地，在一些实施例中，绝缘件3的限位本体31及活动翻盖33的边角及窗口311的转角均呈圆角设置，从而避免绝缘件3损伤第一绝缘膜5。
示例性地，在实施例中，第一绝缘膜5的长度大于第一焊接区111的长度，第一绝缘膜5的宽度大于第一焊接区111的宽度，从而确保第一绝缘膜5能够阻挡第一焊接区111处的焊渣、生锈的碎屑等碎渣。具体地，第一连接部11还包括围绕设置在第一焊接区111外的第一非焊接区112。可选地，第一绝缘膜5覆盖第一焊接区111和第一非焊接区112，从而更好地实现对第一连接部11和第二连接部13之间的绝缘防护，以及确保第一绝缘膜5移位预设距离后仍能够遮盖住第一焊接区111，以阻挡焊渣、生锈的碎屑等碎渣，提高储能装置100的安全性能。第一绝缘膜5的长度等于第一焊接区111的长度和/或第一绝缘膜5的宽度等于第一焊接区111的宽度，从而节省生产成本。在一些实施例中，第一绝缘膜5也以仅覆盖第一焊接区111。
示例性地，第一绝缘膜5的材料包括但不局限于聚丙烯(Polypropylene，PP)、聚苯硫醚(Polyphenylene sulfide，PPS)、聚对苯二甲酸乙二醇酯(Polyethylene terephthalate，PET)、聚酰亚胺(Polyimide，PI)、聚苯乙烯(Polystyrene，PS)、流延聚丙烯薄膜(Castpolypropylene，CPP)、聚萘二甲酸乙二醇酯(Polyethylene naphthalate two formicacid glycol ester，PEN)、聚氯乙烯(Polyvinyl chloride，PVC)、聚醚醚酮(Poly(ether-ether-ketone，PEEK)、聚醚砜树脂(Polyethersulfone resin，PES)、聚亚苯基砜树脂(Polyphenylene sulfone resins，PPSM)、聚乙烯(Polyethylene，PE)中的一种或它们之间的组合。在一些实施例中，第一绝缘膜5为PET膜。PET膜是一种有光泽度的塑料薄膜，物理性能优质，刚度、强度及延展性高，耐穿刺术，耐磨擦，耐热和超低温，耐化学品性、耐磨性能、密封性和保香性优良。当然，第一绝缘膜5也可以根据实际需要，采用其他材料如PPS、PE、PVC等进行替代。
在本实施例中，第一绝缘膜5的数量可以选择为是单层，也可以是多层。作为示例，多层的第一绝缘膜5例如是两层、三层、四层或更多层。需要说明的是，第一绝缘膜5的数量仅仅是用于进行说明，不构成具体限定。示例性地，第一绝缘膜5的厚度为0.05mm-0.5mm。 第一绝缘膜5的厚度需要根据实际产品设计进行确定，第一绝缘膜5过薄可能容易损坏，而第一绝缘膜5过厚又会增加储能装置100的重量，降低储能装置100的能量密度。
第一绝缘膜5夹持于限位本体31和活动翻盖33之间，从而降低第一绝缘膜5在储能装置100运动过程中发生移位或脱离的现象，以及提高第一绝缘膜5的组装效率。可选地，在一些实施例中，限位本体31通过第一绝缘膜5固定于第一连接部11上。具体地，第一绝缘膜5具有粘性，即限位本体31通过第一绝缘膜5粘接于第一连接部11上，以使得限位本体31夹持于第一绝缘膜5与第一连接部11之间。由此，一方面，提高第一绝缘膜5与第一连接部11之间的连接强度，以进一步降低第一绝缘膜5在储能装置100运动过程中发生移位或脱离的现象；另一方面，实现对绝缘件3的位置进行限定，以确保可弯折连接部15能够围绕绝缘件3的限位面310翻转并弯折，以及提高限位本体31的组装效率。
在一些实施例中，在第一焊接区111处设置有第一绝缘膜5，以对第一连接部11的第一焊接区111进行绝缘防护，避免因储能装置100在制程过程及运动过程中存在内短路隐患，造成产品爆炸等安全事故。第一绝缘膜5贴附于第一连接部11的第一非焊接区112。在其它一些实施例中，第一绝缘膜5贴附于第一连接部11的第一焊接区111；或者，第一绝缘膜5贴附于第一连接部11的第一焊接区111和第一非焊接区112。可选地，第一绝缘膜5还可以贴附于限位本体31靠近活动翻盖33的侧面，从而进步增强第一绝缘膜5与绝缘件3及第一连接部11之间的连接强度，降低第一绝缘膜5在储能装置100运动过程中发生移位或脱离的现象。在其它一些实施例中，第一绝缘膜5可以不具有粘性，即第一绝缘膜5被夹持在限位本体31和活动翻盖33之间，从而简化了组装效率，节约成本。
在一些实施例中，限位本体31固定于第一连接部11上，从而进一步提高绝缘件3与转接片1之间的连接强度，以更好地对绝缘件3的相对位置进行固定，进而避免绝缘件3发生移位而出现可弯折连接部15弯折异常以及出现第一绝缘膜5发生移位或脱离的现象。示例性地，在本实施例中，限位本体31与第一连接部11可以通过胶粘方式固定连接在一起，即限位本体31与第一连接部11之间设置有胶层，从而胶层能够进一步用于缓冲可弯折连接部15的应力，提高了弯折效率和成功率，以及简化了集流构件40的整体结构。在其它一些实施例中，限位本体31与第一连接部11还可以通过但不局限于热熔、捆绑、机械连接、激光焊、超声波焊等方式固定连接在一起。
可以理解地，示例性地，在本实施例中，活动翻盖33相对第二连接部13活动设置，从而方便绝缘件3的组装和拆卸。在其它一些实施例中，活动翻盖33也可以固定于第二连接部13上；或者，限位本体31也可以相对第一连接部11活动设置。可选地，活动翻盖33和限位本体31中的至少一者相对转接片1固定设置，从而避免绝缘件3发生移位而影响转接片1进行弯折的问题。
示例性地，在本实施例中，集流构件40还包括第二绝缘膜6，第二绝缘膜6夹持于第一绝缘膜5和活动翻盖33之间，由此，一方面，第二绝缘膜6能够阻挡第二连接部13处的焊渣、生锈的碎渣等金属屑落入储能装置100内部而引发短路的风险，有助于提高储能装置100的良品率及安全性；另一方面，第二绝缘膜6还能够进一步避免第一连接部11与第二连接部13接触而出现短路的问题。
可选地，第二连接部13包括第二焊接区131。活动翻盖33对应第二焊接区131的位置处开设有缺口330，以暴露出第二绝缘膜6。由此，第二绝缘膜6能够覆盖所有第二焊接区131，从而进一步避免第二连接部13处的焊渣、生锈的碎渣等金属屑落入储能装置100内部而引发短路的风险，提高储能装置100的良品率及安全性。缺口330开设于活动翻盖33背离 限位本体31一端，从而确保活动翻盖33与限位本体31之间的连接强度，避免活动翻盖33在翻转过程中出现断裂的问题。
第二连接部13还包括围绕设置在第二焊接区131外的第二非焊接区132。可选地，第二绝缘膜6覆盖第二焊接区131和第二非焊接区132，从而更好地实现对第一连接部11和第二连接部13之间的绝缘防护，以及确保第二绝缘膜6移位预设距离后仍能够遮盖住第二焊接区131，以阻挡焊渣、生锈的碎屑等碎渣，提高储能装置100的安全性能。第二绝缘膜6的长度等于第二焊接区131的长度和/或第二绝缘膜6的宽度等于第二焊接区131的宽度，从而节省生产成本。在一些实施例中，第二绝缘膜6也以仅覆盖第二焊接区131。
请一并参阅图8和图10，图10是图8中的集流构件40的第二绝缘膜6沿B-B线的剖视图。在一些实施例中，第二绝缘膜6包括贴附于第一连接膜上的第一膜体61和与第一膜体61对折连接的第二膜体62，第二膜体62朝向第二连接部13，从而更好地对第一绝缘膜5和第二绝缘膜6的相对位置进行固定。
可选地，第一膜体61可以通过粘接方式固定于第一绝缘膜5上。第二膜体62也可以通过粘接方式固定于活动翻盖33和/或第二连接部13上，从而进一步避免第一绝缘膜5和第二绝缘膜6而发生位移的现象。在另一些实施例中，第二绝缘膜6也可以构造为单层膜。在其它一些实施例中，第二绝缘膜6可以省略，第一绝缘膜5同时覆盖第二焊接区131和第一焊接区111，第一绝缘膜5构造为双层膜，其中一层绝缘膜覆盖第一焊接区111，其中另一层绝缘膜覆盖第二焊接区131。
请一并参阅图11和图12，图11是图4中的集流构件40的绝缘件3的放大图；图12是图11中的集流构件40的绝缘件3沿C-C线的剖视图。在一些实施例中，绝缘件3在集流构件40的厚度方向上的厚度H为1mm-3mm，即绝缘件3的整体厚度为0.03mm-5mm。由此，一方面，避免转接片1的可弯折连接部15在弯折过程中发生应力疲劳甚至出现断裂的现象，提高了转接片1的使用可靠性；另一方面，减小绝缘件3在集流构件40的厚度方向上的占用空间，有效的缩减了集流构件40的厚度，进步适应了集流构件40小型化的市场需求。
可以理解地，可弯折连接部15的曲率半径随绝缘件3在集流构件40的厚度方向上的厚度H的增大而增大，绝缘件3在集流构件40的厚度方向上的厚度H过小，可弯折连接部15的曲率半径小，从而导致可弯折连接部15在弯折过程中发生断裂的问题；而绝缘件3在集流构件40的厚度方向上的厚度H过大，可弯折连接部15的曲率半径大，从而会增加储能装置100的重量，增大绝缘件3对储能装置100的内部空间的占用，降低储能装置100的能量密度。可选地，绝缘件3在集流构件40厚度方向上的厚度H为2mm，从而更好地兼顾绝缘件3的整体厚度和可弯折连接部15的曲率半径。例如，在一些实施例中，绝缘件3在集流构件40厚度方向上的厚度H为0.3mm、0.05mm、0.07mm、1mm、1.5mm、2mm、2.5mm、3mm、3.5mm、4mm、4.5mm、5mm等等。需要说明的是，绝缘件3的厚度H尺寸仅仅是用于进行说明，不构成具体限定，绝缘件3的厚度H需要根据实际产品设计来设计。
其中，窗口311的长度C1与限位本体31的长度C2的比值为0.2-0.5，从而避免绝缘件3在储能装置100运输振动过程中发生位移而出现与第一连接部11的位置错开，进而有效遮挡住第一连接部11的焊渣，提升储能装置100的安全性。窗口311的长度C1与限位本体31的长度C2的比值为0.2、0.25、0.3、0.35、0.4、0.45、0.5等等。示例性地，在本实施例中，窗口311的长度C1为8mm，限位本体31的长度C2为26mm，窗口311的长度C1与限位本体31的长度C2的比值为0.3。需要说明的是，窗口311的长度C1与限位本体31的长度C2尺寸仅仅是用于进行说明，不构成具体限定，窗口311的长度C1与限位本体31的长度C2 需要根据实际产品设计来设计。
示例性地，在本实施例中，活动翻盖33整体可以呈L型结构。具体地，活动翻盖33包括与限位本体31连接固定部331和连接于固定部331背离限位本体31一侧的延伸部332。固定部331的长度C3等大于延伸部332的长度C4，以确保固定部331与限位本体31之间的连接强度。在一些实施例中，活动翻盖33整体还可以呈C型结构或U型结构，从而进一步增大活动翻盖33与第二绝缘膜6之间的夹持面积，进而降低第一绝缘膜5在储能装置100运动过程中发生移位或脱离的现象。在一些实施例中，缺口330的转角均呈圆角设置，从而避免绝缘件3损伤第二绝缘膜6。
可以理解地，为了兼顾固定部331与延伸部332及限位本体31之间的连接强度、绝缘件3的夹持力及第二绝缘膜6在缺口330处的暴露面积，固定部331的宽度W1大致为2mm-6mm，延伸部332的宽度W2为5mm-10mm。例如，在一些实施例中，固定部331的宽度W1为2mm、3mm、4mm、5mm、6mm等等，延伸部332的宽度W2为5mm、6mm、7mm、8mm、9mm、10mm等等。需要说明的是，固定部331的宽度W1及延伸部332的宽度W2尺寸仅仅是用于进行说明，不构成具体限定，固定部331的宽度W1及延伸部332的宽度W2需要根据实际产品设计来设计。
需要说明的是，第一绝缘膜5的材料适用于第二绝缘膜6的材料，具体细节参看上述实施例的介绍，此处不再赘述。第二绝缘膜6的材料可以与第一绝缘膜5的材料不同；或者，还可以与第一绝缘膜5的材料相同。可选地，第一绝缘膜5的颜色不同于第二绝缘膜6的颜色，从而方便分辨，提高组装效率及准确率，以及在机器检测或人工检测的过程中，便于判断第一绝缘膜5和第二绝缘膜6是否发生缺失、移位、脱离等问题。示例性地，在本实施例中，第一绝缘膜5为蓝色绝缘膜，第二绝缘膜6为绿色绝缘膜。在一些实施例中，第一绝缘膜5与第二绝缘膜6的颜色也可以相同；或者，第一绝缘膜5与第二绝缘膜6的颜色分别为其它颜色，本申请不做具体限定。
可选地，在一些实施例中，第一连接部11和第二连接部13中的至少一者设置有锚定第一绝缘膜5和第二绝缘膜6的锚定件，从而进一步避免第一绝缘膜5和第二绝缘膜6发生移位或脱离的现象。例如，锚定件可以构造为在第一连接部11和第二连接部13上设置的卡钩结构或凸起结构，第一绝缘膜5和第二绝缘膜6开设有卡钩结构或凸起结构相配合的卡孔。
其中，缺口330在第一绝缘膜5上的正投影与窗口311在第一绝缘膜5上的正投影间隔设置，即活动翻盖33的延伸部332与限位本体31相止挡。由此，一方面，避免第一连接部11与第二连接部13接触而引发短路的风险；另一方面，避免焊渣、生锈的碎屑等碎渣经过窗口311和缺口330而与第一连接部11或第二连接部13接触而引发短路的风险；再一方面，避免活动翻盖33推动第一绝缘膜5和第二绝缘膜6而发生位移的现象。
绝缘件3设置于可弯折连接部15对应的位置处，从而确保可弯折连接部15能够顺利弯折，提升产品量产良率。可选地，绝缘件3与可弯折连接部15抵接设置，从而确保可弯折连接部15能够绕绝缘件3翻转并折弯。在一些实施例中，绝缘件3与可弯折连接部15间隔预设距离，从而可弯折连接部15提供形变空间。其中，预设距离大致为1mm-3mm，以确保可弯折连接部15能够绕绝缘件3翻转并折弯。
在一些实施例中，绝缘件3设置于第一连接部11和第二连接部13重叠的区域内，从而确保第一连接部11和第二连接部13能够带动绝缘件3压紧第一绝缘膜5和第二绝缘膜6，进而避免第一绝缘膜5和第二绝缘膜6发生移位的问题。
示例性地，在本实施例中，绝缘件3为塑料结构。塑料结构例如是但不局限于PET片材、PE片材、PS片材等其它片材。由此，一方面，实现绝缘件3的绝缘效果；另一方面，提高绝 缘件3的缓冲效果；再一方面，降低生产成本；又一方面，增大了与第一绝缘膜5和第二绝缘膜6的摩擦力，避免第一绝缘膜5和第二绝缘膜6发生移位。在一些实施例中，绝缘件3还可以为具有绝缘效果的其它结构，例如但不局限于石棉或云母等。
可选地，绝缘件3配置为片状结构，从而便利于活动翻盖33相对限位本体31发生翻转对折，以及减小绝缘件3对集流构件40的占用空间，节省生产成本；另一方面，确保活动翻盖33相对限位本体31对折后具有平整的表面，以更好地压紧第一绝缘膜5和第二绝缘膜6。
请一并参阅图13至图15，图13是图1中的储能装置100的俯视图；图14是图13中的储能装置沿D-D线的剖视图；图15是图14中的储能装置中的I部分的放大图。在第一连接部11相对第二连接部13翻转对折后，第一连接部11、限位本体31、第一绝缘膜5、第二绝缘膜6、活动翻盖33及第二连接部13在集流构件40的厚度方向堆叠设置，从而有效的缩减了转接片1的厚度，进步适应了转接片1小型化的市场需求。
第一连接部11相对第二连接部13翻转对折能够带动活动翻盖33相对限位本体31发生翻转并弯折，以使得第一绝缘膜5和第二绝缘膜6压紧于限位本体31和活动翻盖33之间，一方面避免第一绝缘膜5和第二绝缘膜6发生移位；另一方面，活动翻盖33相对限位本体31发生翻转并弯折后增大了绝缘件3在集流构件40在厚度方向上的厚度，以更好吸收、分散折弯时的应力，从而避免转接片1在弯折过程中出现的断裂问题。
极耳302伸入下塑胶件50的限位凹槽501内，并容纳于第一连接片133和第二连接片134之间形成的插接空间135内，从而实现第一连接片133和第二连接片134夹紧极耳302。具体地，极耳302包括与电芯301连接的第一连接段3021、与第二连接部13连接的第二连接段3022和连接于第一连接段3021和第二连接段3022的第三连接段3023。第一连接段3021与第二连接段3022间隔设置，且均相对第三连接段3023朝同一方向弯折，从而能够提高极耳302的弯折程度，有效的节省储能装置100的内部空间，同时避免极耳302在弯折时与转接片1接触，防止储能装置100内短路，并提高储能装置100的能量密度。
以上对本申请实施例进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上上述，本说明书内容不应理解为对本申请的限制。

Claims (24)

  1. 一种集流构件(40)，其中，包括转接片(1)和绝缘件(3)，所述转接片(1)包括第一连接部(11)、第二连接部(13)和连接所述第一连接部(11)和所述第二连接部(13)的可弯折连接部(15)，所述第一连接部(11)和所述第二连接部(13)相对设置；所述绝缘件(3)位于可相对翻折的所述第一连接部(11)和所述第二连接部(13)之间，所述可弯折连接部(15)开设有通孔(150)，以在所述通孔(150)相对两侧形成连接所述第一连接部(11)和所述第二连接部(13)的第一熔断部(151)和第二熔断部(152)；在所述转接片(1)处于展开状态下，所述通孔(150)具有第一直线段(1501)、第一转角段(1502)、第二转角段(1503)及第二直线段(1504)，所述第一直线段(1501)与所述第一转角段(1502)连接并与所述第一熔断部(151)邻接，所述第二直线段(1504)与所述第二转角段(1503)连接并与所述第二熔断部(152)邻接，所述第一转角段(1502)和所述第二转角段(1503)均呈圆角设置；
    所述第一直线段(1501)与所述第一熔断部(151)远离所述第一直线段(1501)的一端的距离为第一距离(D1)，所述第一转角段(1502)远离所述第一直线段(1501)的一端与所述第一熔断部(151)远离所述第一转角段(1502)的一端的距离为第二距离(D2)，所述第一距离(D1)小于所述第二距离(D2)；所述第二直线段(1504)与所述第二熔断部(152)远离所述第二直线段(1504)的一端的距离为第三距离(D3)，所述第二转角段(1503)远离所述第二直线段(1504)的一端与所述第二熔断部(152)远离所述第二转角段(1503)的一端的距离为第四距离(D4)，所述第三距离(D3)小于所述第四距离(D4)。
  2. 如权利要求1所述的集流构件(40)，其中，所述第一熔断部(151)的熔断方向(F11)和所述第二熔断部(152)的熔断方向(F12)均垂直于所述可弯折连接部(15)的弯折方向(F2)。
  3. 如权利要求1-2任意一项所述的集流构件(40)，其中，所述第一距离(D1)与所述第二距离(D2)的比值为0.7-0.95；所述第三距离(D3)和所述第四距离(D4)的比值为0.7-0.95。
  4. 如权利要求1-3任意一项所述的集流构件(40)，其中，所述第一转角段(1502)和所述第二转角段(1503)的数量均包括两个，两个所述第一转角段(1502)连接于所述第一直线段(1501)的相对两端，两个所述第二转角段(1503)连接于所述第二直线段(1504)的相对两端，所述通孔(150)还包括与所述第一转角段(1502)和所述第二转角段(1503)连接的第三直线段(1505)和第四直线段(1506)，所述第一直线段(1501)、两个所述第一转角段(1502)、两个所述第二转角段(1503)、所述第二直线段(1504)、所述第三直线段(1505)及所述第四直线段(1506)合围形成所述通孔(150)。
  5. 如权利要求4所述的集流构件(40)，其中，所述第一直线段(1501)和所述第二直线段(1504)的长度相等且为第一长度(L1)，所述第三直线段(1505)和所述第四直线段(1506)之间的距离为第五距离(D5)，所述第一长度(L1)与所述第五距离(D5)的比值为3/7-9/10。
  6. 如权利要求4-5任意一项所述的集流构件(40)，其中，所述第三直线段(1505)和所述第四直线段(1506)的长度相等且为第二长度(L2)，所述第一直线段(1501)与所述第二直线段(1504)之间的距离为第六距离(D6)，所述第二长度(L2)与所述第六距离(D6)的比值为0.4-0.9。
  7. 如权利要求6所述的集流构件(40)，其中，所述第一熔断部(151)远离所述第一直 线段(1501)的一端与所述第二熔断部(152)远离所述第二直线段(1504)的一端的距离为第七距离(D7)，所述第六距离(D6)与所述第七距离(D7)的比值为0.15-0.25。
  8. 如权利要求1-7任意一项所述的集流构件(40)，其中，所述第一连接部(11)、所述绝缘件(3)及所述第二连接部(13)在所述集流构件(40)的厚度方向上叠置。
  9. 如权利要求1-8任意一项所述的集流构件(40)，其中，所述第一连接部(11)包括第一焊接区(111)，所述第二连接部(13)包括第二焊接区(131)；所述第一焊接区(111)与所述第二焊接区(131)在所述第一连接部(11)上的正投影间隔设置。
  10. 如权利要求1-9任意一项所述的集流构件(40)，其中，所述可弯折连接部(15)包括C字型结构、U字型结构、V字型结构或波浪型结构。
  11. 如权利要求1-10任意一项所述的集流构件(40)，其中，所述转接片(1)沿第一对折轴线(P1)对折形成两层转接片主体(110)，两层所述转接片主体(110)之间形成间隙(120)，两层所述转接片主体(110)沿第二对折轴线(P2)对折形成所述第一连接部(11)、所述第二连接部(13)和所述可弯折连接部(15)，所述第一对折轴线(P1)平行于所述第二对折轴线(P2)。
  12. 如权利要求11所述的集流构件(40)，其中，所述转接片(1)在所述第一对折轴线(P1)处形成有弧形结构(130)。
  13. 如权利要求11-12任意一项所述的集流构件(40)，其中，所述间隙(120)包括供极耳(302)插入的插接空间(135)，所述第二连接部(13)的转接片主体(110)包括第一连接片(133)和第二连接片(134)，所述插接空间(135)形成于所述第一连接片(133)与所述第二连接片(134)之间。
  14. 如权利要求13所述的集流构件(40)，其中，所述第一连接片(133)相对所述第二连接片(134)靠近所述第一连接部(11)，所述第二连接片(134)相对所述第一连接片(133)远离所述第一连接部(11)，所述第一连接片(133)的冲裁方向朝向所述第一连接部(11)，并且与所述第二连接片(134)的冲裁方向相反。
  15. 如权利要求11所述的集流构件(40)，其中，所述转接片(1)包括一片或多片金属箔片，所有所述金属箔片层叠设置，并沿所述第一对折轴线(P1)对折后形成两层所述转接片主体(110)。
  16. 如权利要求1-15任意一项所述的集流构件(40)，所述绝缘件(3)包括用于与所述第一熔断部(151)和/或所述第二熔断部(152)抵接的限位面(310)，所述第一熔断部(151)和/或所述第二熔断部(152)围绕所述限位面(310)翻转并弯折。
  17. 如权利要求1-16任意一项所述的集流构件(40)，其中，所述绝缘件(3)包括限位本体(31)和与所述限位本体(31)可翻转连接的活动翻盖(33)，所述限位本体(31)用于与所述第一连接部(11)抵接，所述活动翻盖(33)用于与所述第二连接部(13)抵接。
  18. 如权利要求17所述的集流构件(40)，其中，所述限位本体(31)固定于所述第一连接部(11)上。
  19. 如权利要求17-18任意一项所述的集流构件(40)，其中，所述第一连接部(11)包括第一焊接区(111)，所述限位本体(31)开设有暴露所述第一焊接区(111)的窗口(311)，所述集流构件(40)还包括第一绝缘膜(5)，所述第一绝缘膜(5)设置于所述窗口(311)处，并遮盖所述窗口(311)。
  20. 如权利要求19所述的集流构件(40)，其中，所述限位本体(31)通过所述第一绝缘膜(5)固定于所述第一连接部(11)上。
  21. 如权利要求19-20任意一项所述的集流构件(40)，其中，集流构件(40)还包括第二绝缘膜(6)，所述第二绝缘膜(6)夹持于所述第一绝缘膜(5)和所述活动翻盖(33)之间。
  22. 如权利要求21所述的集流构件(40)，其中，所述第二连接部(13)包括第二焊接区(131)，所述活动翻盖(33)对应所述第二焊接区(131)的位置处开设有缺口，以暴露出所述第二绝缘膜(6)。
  23. 一种储能装置(100)，其中，包括极耳(302)、极柱(202)和如权利要求1-22中任一项所述的集流构件(40)；所述集流构件(40)的所述第一连接部(11)与所述极柱(202)电连接，所述集流构件(40)的所述第二连接部(13)与所述极耳(302)电连接。
  24. 一种用电设备，其中，包括如权利要求23所述的储能装置(100)，所述储能装置(100)为所述用电设备提供电能。
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CN216958265U (zh) * 2022-03-23 2022-07-12 中创新航科技股份有限公司 电池盖板组件、电池及电池组
CN217589363U (zh) * 2022-04-28 2022-10-14 湖北亿纬动力有限公司 顶盖组件及电池
CN217719890U (zh) * 2022-07-22 2022-11-01 江苏正力新能电池技术有限公司 电极构件和电芯
CN115588822A (zh) * 2022-12-12 2023-01-10 宁德新能源科技有限公司 电池和电池组

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