CN218896740U - Battery and power utilization device - Google Patents

Abstract

The embodiment of the application relates to the technical field of batteries, and particularly discloses a battery and an electric device, wherein the battery comprises a battery core and a connecting piece, the battery core comprises a metal shell and an electrode assembly, the metal shell comprises a top wall, a bottom wall and a side wall, two ends of the side wall are respectively connected with the top wall and the bottom wall, the top wall, the bottom wall and the side wall enclose to form a containing cavity, and the electrode assembly is contained in the containing cavity; the connecting piece includes fixed part and connecting portion, fixed part with connecting portion connect, fixed part set up in on the lateral wall, connecting portion be used for with the battery compartment is connected. By the mode, the influence of the fixing structure of the battery and the battery compartment on the energy density of the battery can be reduced in the thickness direction.

Description

Battery and power utilization device

Technical Field

The embodiment of the application relates to the technical field of batteries, in particular to a battery and an electric device.

Background

The lithium battery has the advantages of high energy density, high power density, multiple recycling times, long storage time and the like, is widely used in portable electronic equipment such as mobile phones, digital cameras, electronic watches, portable computers and the like, has wide application prospects in the aspects of electric vehicles such as electric automobiles and electric bicycles, large and medium-sized electric equipment such as energy storage facilities and the like, and becomes a key for solving global problems such as energy crisis, environmental pollution and the like. In some common electronic devices, such as electronic watches, the battery is fixed in the battery compartment by providing a double-sided adhesive tape on the bottom wall thereof. However, the double-sided tape occupies the internal space of the electronic device in the thickness direction, thereby affecting the capacity of the battery mounted on the electronic device, and simultaneously, being unfavorable for the demand of customers for light and thin electronic devices.

Disclosure of Invention

In view of the above, the embodiments of the present application provide a battery and an electric device, which improve the problem that the double faced adhesive tape occupies the battery compartment space of an electronic device in the thickness direction, thereby affecting the capacity of the battery mounted on the electronic device, and simultaneously being unfavorable for the demand of customers for lightening and thinning the electronic device.

According to one aspect of embodiments of the present application, a battery is provided that includes a cell and a connector. The battery cell comprises a metal shell and an electrode assembly, wherein the metal shell comprises a top wall, a bottom wall and a side wall, two ends of the side wall are respectively connected with the top wall and the bottom wall, the top wall, the bottom wall and the side wall enclose to form a containing cavity, the electrode assembly is contained in the containing cavity, the connecting piece comprises a fixing part and a connecting part, the fixing part is connected with the connecting part, the fixing part is arranged on the side wall, and the connecting part is used for connecting a battery compartment. The battery is fixed in the battery compartment by the connecting piece positioned on the side wall, so that the influence on the internal space of the electric device in the thickness direction is reduced.

In an alternative mode, the bottom wall is connected with the bin bottom of the battery bin, the connecting portion is bent and arranged relative to the fixing portion, the fixing portion is attached to the side wall, one end, away from the bottom wall, of the fixing portion is connected to the connecting portion, the connecting portion extends and is arranged along the first direction, the first direction is perpendicular to the thickness direction of the battery cell, and the projection of the connecting portion along the thickness direction of the battery cell is not overlapped with the projection of the top wall and/or the bottom wall along the thickness direction of the battery cell. By the arrangement, the influence of the connecting part on the battery cell in the thickness direction of the battery cell is reduced.

In an alternative form, the battery further comprises a protective plate, the protective plate being electrically connected to the electrode assembly; the side wall comprises a plurality of sub side walls which are connected in sequence, and the plurality of sub side walls comprise a first sub side wall. The electrode assembly includes a first electrode and a second electrode, the first electrode and the second electrode having opposite polarities. The battery cell also comprises a first polar post, one end of the first polar post is electrically connected with the first electrode, the other end of the first polar post extends out of the first sub-side wall, the other end of the first polar post is electrically connected with the protection plate, and the protection plate is positioned on the first sub-side wall.

In an alternative, the first pole is insulated from the metal housing, the second pole is electrically connected to the metal housing, and the protective plate is electrically connected to the metal housing.

In an alternative manner, the cell further comprises a second post, one end of the second post is electrically connected to the second electrode, the other end of the second post extends from the first sub-sidewall, and the other end of the second post is electrically connected to the protection plate.

In an optional manner, the plurality of sub-side walls further includes a second sub-side wall and a third sub-side wall, the second sub-side wall and the third sub-side wall are respectively connected to two ends of the first sub-side wall, the second sub-side wall and the third sub-side wall are oppositely arranged, and the plurality of connecting pieces are arranged on the second sub-side wall and the third sub-side wall at intervals. When the battery is installed in the battery compartment of the power utilization device, the oppositely arranged connecting pieces can enable the battery to be more firmly fixed in the battery compartment.

In an optional manner, the plurality of sub-side walls further includes a fourth sub-side wall, and the first sub-side wall, the second sub-side wall, the fourth sub-side wall, and the third sub-side wall are sequentially connected, where the first sub-side wall and the fourth sub-side wall are disposed opposite to each other, and the plurality of connecting pieces are disposed on the second sub-side wall, the third sub-side wall, and the fourth sub-side wall, respectively.

In an alternative mode, a first connecting hole is formed in the connecting portion, and the first connecting hole is used for being connected with the battery bin.

In an alternative mode, the side wall comprises a plurality of sub side walls which are connected in sequence, the fixing part comprises a first sub fixing part and a second sub fixing part connected with the first sub fixing part, the second sub fixing part is bent and arranged relative to the first sub fixing part, the first sub fixing part is attached to one sub side wall, the second sub fixing part is attached to the other adjacent sub side wall, and the fixing part is located at the connecting position between the adjacent sub side walls. The contact area between the first sub-fixing part and the second sub-fixing part and the metal shell is increased, so that the connection strength between the fixing part and the metal shell is increased, the falling risk of the fixing part is reduced, the fixing part is connected with the adjacent sub-side walls, the fixing part is firmer, the fixing part can be reduced to fall off from the sub-side walls when the battery falls or collides, meanwhile, the fixing part can also play a role in protecting the connection part between the adjacent sub-side walls, and the breakage and damage between the adjacent sub-side walls can be reduced.

In an alternative mode, the battery further comprises a connecting layer, wherein the connecting layer is attached to the outer surfaces of the side walls, and the connecting layer is arranged between the side walls and the connecting piece.

In an alternative, the connector is integrally formed with the metal housing.

According to another aspect of embodiments of the present application, there is provided an electrical device comprising a battery as described above.

In an alternative manner, the connection portion extends along the first direction, and the connection portion is provided with a first connection hole. The second connecting hole is formed in the bin wall of the battery bin and is located on one side, far away from the bottom of the battery bin, of the bin wall, the second connecting hole is close to the top wall of the battery, when the battery is installed in the battery bin, the bottom wall of the battery is abutted with the bottom of the bin of the battery bin, and the connecting portion on the connecting piece is abutted with the bin wall of the battery bin. The power utilization device comprises a screw, and one end of the screw penetrates through the first connecting hole and is connected with the second connecting hole in a threaded mode.

The beneficial effects of the embodiment of the application are that: the battery of the present application includes a cell and a connector, unlike the prior art. Wherein, the electric core includes metal casing and electrode assembly, metal casing includes the roof, diapire and lateral wall, the both ends of lateral wall are connected with roof and diapire respectively, roof, diapire and lateral wall enclose and close and form and accept the chamber, electrode assembly accepts in acceping the chamber, in addition, the connecting piece includes fixed part and connecting portion, fixed part and connecting portion connect, fixed part set up on the lateral wall, connecting portion are used for being connected with the battery compartment, the user is when need be fixed in the battery compartment of power consumption device with the battery, utilize connecting portion and the battery compartment that are located on the lateral wall to fix, thereby realize being fixed in the battery compartment with whole battery, the connecting portion that is located on the lateral wall reducible influence on thickness direction of power consumption device, can improve battery energy density, simultaneously, satisfy the design demand that the customer is frivolous to power consumption device, and, the user of being convenient for dismantles the battery.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic view of the overall structure of a battery according to an embodiment of the present application;

FIG. 2 is an exploded view of the overall structure of a battery according to an embodiment of the present application;

FIG. 3 is a schematic view of the internal structure of a battery cell of an embodiment of the present application;

FIG. 4 is an exploded view of the overall structure of another embodiment of a battery according to an embodiment of the present application;

FIG. 5 is an exploded view of the overall structure of yet another embodiment of a battery according to an embodiment of the present application;

FIG. 6 is an exploded view of the overall structure of yet another embodiment of a battery according to an embodiment of the present application;

fig. 7 is an exploded view of the overall structure of a further embodiment of a battery according to an embodiment of the present application.

Detailed Description

In order to facilitate an understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application in this description is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.

Referring to fig. 1 and 2, a battery 1000 includes a cell 10, a connection member 20, a protection plate 30, and a connection layer 40. The connecting piece 20, the protection plate 30 and the connecting layer 40 are all arranged on the outer surface of the battery cell 10, the protection plate 30 is electrically connected with the battery cell 10, the connecting piece 20 is used for fixing a battery in a battery compartment of the power utilization device, and the connecting layer 40 is used for fixing the connecting piece 20 on the battery cell 10.

The battery further includes a first conductive sheet 50, a second conductive sheet 60, a first protective gel layer 70, and a second protective gel layer 80. The first conductive sheet 50 and the second conductive sheet 60 are located between the cell 10 and the protection plate 30, the first conductive sheet 50 and the second conductive sheet 60 are used for realizing electrical connection between the protection plate 30 and the cell 10, the first protection adhesive layer 70 is disposed on the cell 10 and between the cell 10 and the protection plate 30, and the second protection adhesive layer 80 is disposed on one side of the protection plate 30 away from the cell 10. The battery cell 10, the connector 20, the protection plate 30, the connection layer 40, the first conductive sheet 50, the second conductive sheet 60, the first protection adhesive layer 70, and the second protection adhesive layer 80 are specifically described below.

As shown in fig. 2 and 3, the battery 10 includes a metal case 11, an electrode assembly 12, a first electrode post 13, and an electrolyte 14, the electrolyte 14 is contained in an internal enclosed space formed by the metal case 11, the electrode assembly 12 is located in the metal case 11 and is immersed in the electrolyte 14, the electrode assembly 12 includes a first electrode 124 and a second electrode 125, polarities of the first electrode 124 and the second electrode 125 are opposite, one end of the first electrode post 13 is electrically connected with the first electrode 124, the other end of the first electrode post 13 extends from a first sub-sidewall 113a of the metal case 11, and the first electrode post 13 is electrically connected with the protection plate 30. At this time, in order to achieve electrical conduction between the protection plate 30 and the electrode assembly 12, the protection plate 30 may be electrically connected to the metal case 11 through the electrical connection between the second electrode 125 and the metal case 11, wherein the first electrode post 13 serves as one electrode and the metal case 11 serves as the other electrode, thereby achieving electrical conduction between the protection plate 30 and the electrode assembly 12. Optionally, the first pole 13 is insulated from the metal housing 11.

It will be appreciated that, due to the different structures of the battery cells 10, the electrical connection between the protection plate 30 and the electrode assembly 12 may also be different, and in some embodiments, referring to fig. 4, the battery cells 10 further include a second post 15, one end of the second post 15 is electrically connected to the second electrode 125, the other end of the second post 15 extends from the first sub-sidewall 113a, and the other end of the second post 15 is electrically connected to the protection plate 30, wherein the first post 13 serves as one electrode and the second post 15 serves as the other electrode to achieve electrical communication between the protection plate 30 and the electrode assembly 12.

Specifically, the electrode assembly 12 is of a laminated type, and the electrode assembly 12 includes a positive electrode sheet 121, a negative electrode sheet 122, and a separator 123. The positive electrode sheets 121 and the negative electrode sheets 122 are stacked alternately, and a separator 123 is provided between any adjacent positive electrode sheet 121 and negative electrode sheet 122, a first electrode 124 is connected to the positive electrode sheet 121, and a second electrode 125 is connected to the negative electrode sheet 122. It is to be understood that the number of the positive electrode sheet 121 and the negative electrode sheet 122 is not limited, and may be adaptively adjusted according to practical situations, for example: in order to reduce the space occupied by the battery cell 10 as much as possible, the number of the positive electrode tab 121 and the negative electrode tab 122 is preferably 1 or 2, however, in other embodiments, the number of the positive electrode tab 121 and the negative electrode tab 122 may be more than 3. In addition, in order to allow the electrolyte 14 to sufficiently infiltrate the electrode assembly 12 and thereby increase the energy density of the battery, in other embodiments, the electrode assembly 12 may also be wound, i.e., form a wound cell 10, in which the electrolyte 14 may conveniently flow from each gap into between the stacks of the electrode assembly 12 due to the gap between the electrode assembly 12 and the metal case 11 when the electrode assembly 12 is packaged.

In some embodiments, the metal case 11 includes a top wall 111, a bottom wall 112 and a side wall 113, two ends of the side wall 113 are respectively connected to the top wall 111 and the bottom wall 112, the top wall 111, the bottom wall 112 and the side wall 113 enclose a housing cavity, the housing cavity is used for housing components such as the electrode assembly 12 and the electrolyte 14, and the top wall 111 of the metal case 11 is disposed opposite to the bottom wall 112 of the metal case 11 along the thickness direction of the battery cell 10. When the battery is mounted in the battery compartment of the power utilization device, the bottom wall 112 of the metal housing 11 is attached to the bottom of the battery compartment.

In some embodiments, the sidewall 113 includes a plurality of sequentially connected sub-sidewalls including a first sub-sidewall 113a, a second sub-sidewall 113b, a third sub-sidewall 113c, and a fourth sub-sidewall 113d, the first sub-sidewall 113a, the second sub-sidewall 113b, the fourth sub-sidewall 113d, and the third sub-sidewall 113c being sequentially connected, the first sub-sidewall 113a being disposed opposite the fourth sub-sidewall 113d, the second sub-sidewall 113b being disposed opposite the third sub-sidewall 113 c. Optionally, referring to fig. 5, the fourth sub-sidewall 113d is curved. The first sub-sidewall 113a refers to a sidewall of the case close to the protection plate 30.

In some embodiments, as shown in fig. 4, the number of the connectors 20 is plural, and the connectors 20 are disposed on the second sub-sidewall 113b and the third sub-sidewall 113c at intervals, and the connectors 20 disposed on the second sub-sidewall 113b and the third sub-sidewall 113c are disposed opposite to each other, so that when the battery is mounted in the battery compartment of the power-using device, the oppositely disposed connectors 20 can make the battery be more firmly fixed in the battery compartment.

It should be noted that, due to the different shapes of the metal shells 11, the number of the connectors 20 located thereon may also be different, and the user may select different numbers of connectors 20 according to the different shapes of the metal shells 11, for example: when the metal shell 11 is in a cuboid shape, the number of the connecting pieces 20 can be 4, and the 4 connecting pieces 20 are respectively arranged at four corners of the metal shell 11, so that the battery is stably arranged in the battery compartment.

In some embodiments, as shown in fig. 5, the plurality of connection members 20 are respectively disposed on the second sub-sidewall 113b, the third sub-sidewall 113c and the fourth sub-sidewall 113d, and the connection members 20 respectively disposed on the second sub-sidewall 113b, the third sub-sidewall 113c and the fourth sub-sidewall 113d are disposed in a triangular shape, so that when the battery is mounted in the battery compartment of the electric device, the plurality of connection members 20 disposed in the triangular shape can make the battery more firmly fixed in the battery compartment. Optionally, the number of the connecting members 20 is 3, and 3 connecting members 20 are respectively disposed on the second sub-sidewall 113b, the third sub-sidewall 113c, and the fourth sub-sidewall 113 d.

It can be appreciated that the material and shape of the metal housing 11 can be adaptively adjusted according to actual needs, for example, in the embodiment of the present application, since the battery is used as a power source of the intelligent wearable device and is installed in a frame of the intelligent wearable device, and in order to make the battery have good mechanical properties, the material of the metal housing 11 may be a steel alloy, and the shape of the metal housing 11 is approximately a cuboid, however, in other embodiments of the present application, the material of the metal housing 11 may also be an aluminum alloy, an iron alloy, a copper alloy, a nickel alloy, a stainless steel, or the like, and the shape of the metal housing 11 may also be a columnar regular structure.

For the above-mentioned connector 20, as shown in fig. 2, the connector 20 includes a fixing portion 201 and a connecting portion 202, the fixing portion 201 and the connecting portion 202 are connected, the fixing portion 201 is disposed on the side wall 113, and the connecting portion 202 is used for connecting with the battery compartment, thereby realizing fixing of the battery to the battery compartment. It will be appreciated that: the connection member 20 is not limited to being fixed to the metal housing 11 of the battery cell 10 by the connection layer 40, and other manners may be used, for example: referring to fig. 6, the connecting member 20 is integrally formed with the metal housing 11.

In some embodiments, the connecting portion 202 is bent relative to the fixing portion 201, the fixing portion 201 is attached to the side wall 113, one end of the fixing portion 201 away from the bottom wall 112 is connected to the connecting portion 202, the connecting portion 202 extends along a first direction, the first direction is perpendicular to the thickness direction of the battery cell 10, and the projection of the connecting portion 202 along the thickness direction of the battery cell 10 is not overlapped with the projection of the top wall 111 and/or the bottom wall 112 along the thickness direction of the battery cell 10, so that the influence of the connecting portion 202 on the battery cell 10 along the thickness direction of the battery cell 10 is reduced.

In some embodiments, the connecting portion 202 is provided with a first connecting hole 2021, and the first connecting hole 2021 is used for connecting with the battery compartment, and the first connecting hole 2021 can be screwed on a compartment wall of the battery compartment after a screw passes through, so as to fix the battery cell 10 in the battery compartment.

In some embodiments, referring to fig. 7, the fixing portion 201 includes a first sub-fixing portion 2011 and a second sub-fixing portion 2012 connected to the first sub-fixing portion 2011, the second sub-fixing portion 2012 is bent and arranged relative to the first sub-fixing portion 2011, the first sub-fixing portion 2011 is attached to one sub-sidewall, the second sub-fixing portion 2012 is attached to another adjacent sub-sidewall, and the fixing portion 201 is partially located at a connection position between the adjacent sub-sidewalls, so that the contact area between the first sub-fixing portion 2011 and the second sub-fixing portion 2012 and the metal housing 11 is increased, so that the connection strength between the fixing portion 201 and the metal housing 11 is increased, the risk of falling of the fixing portion 201 is reduced, in addition, the fixing portion 201 and the adjacent sub-sidewalls are connected, so that the fixing portion 201 is more firmly fallen off from the sub-sidewalls when the battery falls or collides, and the fixing portion 201 can protect the connection position between the adjacent sub-sidewalls, and the breakage damage between the adjacent sub-sidewalls can be reduced.

As for the first conductive sheet 50 and the second conductive sheet 60 described above, as shown in fig. 2 and 3, one end of the first conductive sheet 50 is connected to one electrode of the electrode assembly 12, the other end of the first conductive sheet 50 is electrically connected to the protection plate 30, one end of the second conductive sheet 60 is connected to the other electrode of the electrode assembly 12, and the other end of the second conductive sheet 60 is electrically connected to the protection plate 30, thereby achieving the electrical connection between the protection plate 30 and the battery cell 10. Alternatively, the first conductive sheet 50 may have a U-shape or a Z-shape, and the second conductive sheet 60 may have a U-shape or a Z-shape.

For the first protective adhesive layer 70 and the second protective adhesive layer 80, as shown in fig. 2, the first protective adhesive layer 70 is disposed on the battery cell 10 and between the battery cell 10 and the protection plate 30, and the second protective adhesive layer 80 is disposed on a side of the protection plate 30 facing away from the battery cell 10. The first protective adhesive layer 70 can fix the protective plate 30 on the battery cell 10, and meanwhile, the first protective adhesive layer 70 can reduce the direct contact of the protective plate 30 with the outer surface of the battery cell 10. The second protective adhesive layer 80 can reduce damage or influence of external ash or water drops on the protective plate 30.

As shown in fig. 2 and 4, the protection plate 30 is electrically connected to the electrode assembly 12, the protection plate 30 is positioned on the first sub-side wall 113a, the connection layer 40 is attached to the outer surfaces of the plurality of side walls 113, and the connection layer 40 is disposed between the side walls 113 and the connection member 20, as the protection plate 30 and the connection layer 40 are described above. The protection board 30 may play a role in protecting a circuit of the battery cell 10, and the connection layer 40 is used for fixing the connection piece 20 on the battery cell 10.

In some embodiments, the connection layer 40 is an adhesive layer, and the connection member 20 is fixed on the cell 10 by using the adhesive layer. Alternatively, the connection layer 40 is a photosensitive adhesive layer (UV adhesive layer) or a hot melt adhesive layer, etc. It will be appreciated that: the connecting layer 40 is not limited to be an adhesive layer, but may be other members, such as: the laser welding gasket, that is, the connecting piece 20 is fixed on the battery core 10 by using a welding mode, wherein the laser welding gasket can be fixed on the metal shell 11 in advance, then the connecting piece 20 is fixed on the laser welding gasket by using a welding mode, the thickness of the outer surface of the metal shell 11 can be increased by using the laser welding gasket, and the risk of breakage and leakage of the metal shell 11 during welding of the connecting piece 20 can be reduced.

In the present embodiment, the battery 1000 includes a cell 10 and a connector 20. The battery cell 10 includes a metal housing 11 and an electrode assembly 12, the metal housing 11 includes a top wall 111, a bottom wall 112 and a side wall 113, two ends of the side wall 113 are respectively connected with the top wall 111 and the bottom wall 112, the top wall 111, the bottom wall 112 and the side wall 113 enclose to form a housing cavity, the electrode assembly 12 is housed in the housing cavity, in addition, the connecting piece 20 includes a fixing portion 201 and a connecting portion 202, the fixing portion 201 is connected with the connecting portion 202, the fixing portion 201 is disposed on the side wall 113, the connecting portion 202 is used for being connected with a battery compartment, when a user needs to fix a battery in the battery compartment of the electric device, the connecting portion 202 located on the side wall 113 is used for being fixed with the battery compartment, thereby realizing that the whole battery is fixed in the battery compartment, the connecting portion 202 located on the side wall 113 can reduce the influence on the thickness direction of the electric device, when the user selects batteries with different capacities, the battery compartment is only required to be selected, the selection of the corresponding battery capacity is not required to be influenced by considering the size of the battery compartment, and simultaneously, the design of the user needs to use the electric device and the battery compartment is light and thin, the user needs to detach the battery is convenient to detach the battery.

The application further provides an embodiment of an electric device, the electric device includes the battery as described above, and the specific structure and function of the battery can be referred to the above embodiment, which is not described herein again. The electricity utilization device can be mobile electronic equipment, energy storage equipment, an electric automobile, a hybrid electric automobile and the like. The mobile device may be a mobile phone, a wearable electronic device, a tablet computer, a notebook computer, etc.

In some embodiments, the electricity consumption device is provided with a battery compartment for installing the battery, a second connecting hole is arranged on a compartment wall of the battery compartment, the second connecting hole is located on one side of the compartment wall away from the compartment bottom of the battery compartment, the second connecting hole is close to the top wall 111 of the battery, when the battery is installed in the battery compartment, the bottom wall 112 of the battery is abutted with the compartment bottom of the battery compartment, and the connecting part 202 on the connecting piece 20 is abutted with the compartment wall of the battery compartment.

In some embodiments, the electrical device comprises a screw having one end threaded through a first connection hole 2021 in the connection portion 202 to a second connection hole, thereby enabling the battery to be secured to the battery compartment.

The foregoing description is only exemplary embodiments of the present application and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the present application.

Claims (13)

1. A battery disposed in a battery compartment of an electrical device, comprising:

the battery cell comprises a metal shell and an electrode assembly, wherein the metal shell comprises a top wall, a bottom wall and a side wall, two ends of the side wall are respectively connected with the top wall and the bottom wall, the top wall, the bottom wall and the side wall are enclosed to form an accommodating cavity, and the electrode assembly is accommodated in the accommodating cavity;

the connecting piece, the connecting piece includes fixed part and connecting portion, fixed part with connecting portion connect, fixed part set up in on the lateral wall, connecting portion be used for with the battery compartment is connected.

2. The battery of claim 1, wherein the battery is configured to provide the battery with a plurality of cells,

the battery pack comprises a battery pack, a battery, a connecting part, a fixing part, a connecting part, a top wall and/or a bottom wall, wherein the bottom wall is connected with the bottom of the battery pack, the connecting part is bent relative to the fixing part, the fixing part is attached to the side wall, one end of the fixing part, which is far away from the bottom wall, is connected with the connecting part, the connecting part extends along a first direction, the first direction is perpendicular to the thickness direction of the battery cell, and the projection of the connecting part along the thickness direction of the battery cell is not overlapped with the projection of the top wall and/or the bottom wall along the thickness direction of the battery cell.

3. The battery of claim 1, wherein the battery is configured to provide the battery with a plurality of cells,

the battery further includes a protection plate electrically connected with the electrode assembly;

the side wall comprises a plurality of sub side walls which are connected in sequence, and the plurality of sub side walls comprise a first sub side wall;

the electrode assembly includes a first electrode and a second electrode, the first electrode and the second electrode being of opposite polarity;

the battery cell also comprises a first polar post, one end of the first polar post is electrically connected with the first electrode, the other end of the first polar post extends out of the first sub side wall, the other end of the first polar post is electrically connected with the protection plate, and the protection plate is positioned on the first sub side wall.

4. The battery of claim 3, wherein the battery is provided with a battery cell,

the first pole is insulated from the metal shell, the second electrode is electrically connected with the metal shell, and the protection board is electrically connected with the metal shell.

5. The battery of claim 3, wherein the battery is provided with a battery cell,

the battery cell also comprises a second pole, one end of the second pole is electrically connected with the second electrode, the other end of the second pole extends out of the side wall of the first sub-body, and the other end of the second pole is electrically connected with the protection plate.

6. The battery according to any one of claim 3 to 5, wherein,

the plurality of sub-side walls further comprise a second sub-side wall and a third sub-side wall, the second sub-side wall and the third sub-side wall are respectively connected to two ends of the first sub-side wall, the second sub-side wall and the third sub-side wall are oppositely arranged, and the plurality of connecting pieces are arranged on the second sub-side wall and the third sub-side wall at intervals.

7. The battery of claim 6, wherein the battery is configured to provide the battery with a battery cell,

the plurality of sub-side walls further comprise a fourth sub-side wall, the first sub-side wall, the second sub-side wall, the fourth sub-side wall and the third sub-side wall are sequentially connected, the first sub-side wall and the fourth sub-side wall are oppositely arranged, and the plurality of connecting pieces are respectively arranged on the second sub-side wall, the third sub-side wall and the fourth sub-side wall.

8. The battery of claim 2, wherein the battery is configured to provide the battery with a plurality of cells,

the connecting part is provided with a first connecting hole, and the first connecting hole is used for being connected with the battery compartment.

9. The battery of claim 2, wherein the battery is configured to provide the battery with a plurality of cells,

the side wall comprises a plurality of sub side walls which are connected in sequence, the fixing part comprises a first sub fixing part and a second sub fixing part connected with the first sub fixing part, the second sub fixing part is bent and arranged relative to the first sub fixing part, the first sub fixing part is attached to one sub side wall, the second sub fixing part is attached to another adjacent sub side wall, and the fixing part is positioned at the joint between the adjacent sub side walls.

10. The battery of claim 9, wherein the battery is configured to provide the battery with a plurality of cells,

the battery also comprises a connecting layer, wherein the connecting layer is attached to the outer surfaces of the side walls, and the connecting layer is arranged between the side walls and the connecting piece.

11. The battery according to claim 3 or 4, wherein,

the connecting piece and the metal shell are integrally formed.

12. An electrical device comprising a battery according to any one of claims 1-11.

13. An electrical device according to claim 12, wherein,

the connecting part extends along a first direction, the first direction is perpendicular to the thickness direction of the battery cell, and a first connecting hole is formed in the connecting part;

the battery box comprises a battery box body, a battery box bottom, a battery box, a connecting piece, a battery box, a connecting piece and a connecting piece, wherein a second connecting hole is formed in the box wall of the battery box, the second connecting hole is located on one side, far away from the bottom of the battery box, of the box wall, the second connecting hole is close to the top wall of the battery, when the battery is installed in the battery box, the bottom wall of the battery is abutted with the bottom of the battery box, and the connecting piece is abutted with the box wall of the battery box;

the electricity utilization device comprises a screw, and one end of the screw penetrates through the first connecting hole and is in threaded connection with the second connecting hole.

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