CN217444472U - High-energy high-power square lithium ion battery - Google Patents
High-energy high-power square lithium ion battery Download PDFInfo
- Publication number
- CN217444472U CN217444472U CN202220402422.1U CN202220402422U CN217444472U CN 217444472 U CN217444472 U CN 217444472U CN 202220402422 U CN202220402422 U CN 202220402422U CN 217444472 U CN217444472 U CN 217444472U
- Authority
- CN
- China
- Prior art keywords
- pole
- positive
- negative
- battery
- connecting sheet
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a high-energy high-power square lithium ion battery, which comprises a battery main body; the battery body is arranged in the battery shell with the top opening; the battery comprises a battery body, a battery cover, a positive connecting sheet, a negative connecting sheet and a plurality of electrode groups, wherein the battery cover, the positive connecting sheet, the negative connecting sheet and the plurality of electrode groups are horizontally distributed; the battery cover comprises a smooth aluminum plate, a positive pole post and a negative pole post; the left end and the right end of the smooth aluminum plate are respectively provided with an anode pole and a cathode pole in a hole; the bottom of the positive pole column is welded with the upper part of the positive connecting sheet by laser; the bottom of the cathode pole is welded with the upper part of the cathode connecting sheet by laser; the positive connecting sheet is welded with the positive lugs of all the pole groups; the negative electrode connecting sheet is welded with the negative electrode lugs of all the electrode groups; the utility model discloses a square lithium ion battery of high energy high power, its structural design science can show the battery inner space that reduces positive pole connection piece and negative pole connection piece and need occupy, guarantees the volume of battery utmost point group, is favorable to the promotion of battery capacity, guarantees the output of battery, has the meaning of the production practice of great weight.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a square lithium ion battery of high energy high power.
Background
The lithium ion battery has the advantages of high specific energy, more recycling times, long storage time and the like, is widely applied to portable electronic equipment (such as mobile phones, digital video cameras and portable computers), and is also widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the performance requirement on the lithium ion battery is higher and higher.
At present, the application amount of power lithium ion batteries is increasing year by year, the performance requirements of the power batteries are becoming more stringent, and the specific energy of the batteries and the power output of the batteries are becoming higher and higher.
For power lithium ion batteries, it typically includes a plurality of pole sets and is connected to the plurality of pole sets by a battery cover with pins. The distribution direction of the pins is the same as the direction of the battery cover (both the distribution direction and the length direction), so that the pins occupy larger internal space of the battery, the content of the positive and negative electrode materials filled in the battery can be reduced (namely, the volume of the electrode group is ensured), and the improvement of the battery capacity is not facilitated.
In addition, for the existing pin structure, the welding area of the tab and the pin of the pole group is small, so that the output power performance of the battery is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a square lithium ion battery of high energy high power to the technical defect that prior art exists.
Therefore, the utility model provides a high-energy high-power square lithium ion battery, which comprises a battery main body;
the battery body is arranged in the battery shell with the top opening;
the battery comprises a battery body, a battery cover, a positive connecting sheet, a negative connecting sheet and a plurality of electrode groups, wherein the battery cover, the positive connecting sheet, the negative connecting sheet and the plurality of electrode groups are horizontally distributed;
the battery cover comprises a smooth aluminum plate, a positive pole post and a negative pole post;
the left end and the right end of the smooth aluminum plate are respectively provided with an anode pole and a cathode pole in a hole; the bottom of the positive pole column is welded with the upper part of the positive connecting sheet by laser;
the bottom of the cathode pole is welded with the upper part of the cathode connecting sheet by laser;
the positive connecting sheet is welded with the positive lugs of all the pole groups;
the negative electrode connecting sheet is welded with the negative electrode lugs of all the electrode groups;
for the positive electrode tab, it includes: the battery cover comprises a positive connecting sheet main body, a positive connecting sheet battery cover pole column welding area, a plurality of pole group positive lug welding areas, a positive connecting sheet dividing seam and a positive connecting sheet bending hole;
the battery cover pole column welding area of the positive connecting sheet is positioned at the upper part of the main body of the positive connecting sheet and is welded with the bottom part of the positive pole column;
the positive lug welding areas of the plurality of pole groups are positioned in the middle and the lower part of the positive connecting piece main body;
the number of the positive lug welding areas of the pole groups is equal to that of the pole groups;
the positive lug welding area of each pole group is respectively used for welding with the positive lug of one pole group;
each positive lug welding area of each pole group and each connecting position of the positive connecting piece main body are respectively provided with a positive connecting piece bending hole;
the middle part and the longitudinal middle position of the lower part of the positive connecting sheet main body are provided with vertically distributed positive connecting sheet dividing slits;
for the negative electrode tab, it includes: the negative electrode connecting sheet main body, the negative electrode connecting sheet battery cover pole column welding area, the multiple pole group negative electrode lug welding areas, the negative electrode connecting sheet dividing seam and the negative electrode connecting sheet bending hole;
the battery cover pole column welding area of the negative connecting sheet is positioned at the upper part of the main body of the negative connecting sheet and is welded with the bottom of the negative pole column;
the negative electrode lug welding areas of the plurality of electrode groups are positioned in the middle and the lower part of the negative electrode connecting sheet main body;
the number of the welding areas of the negative electrode ears of the electrode groups is equal to that of the electrode groups;
each pole group negative pole lug welding area is respectively used for welding with a negative pole lug of one pole group;
each negative electrode lug welding area of each electrode group and each connecting position of the negative electrode connecting sheet main body are respectively provided with a negative electrode connecting sheet bending hole;
the middle part and the longitudinal middle position of the lower part of the negative pole connecting piece main body are provided with vertically distributed negative pole connecting piece dividing slits.
Preferably, an insulating protective sleeve is arranged in the battery shell;
all the pole groups are positioned in the insulating protective sleeve with the top opening.
Preferably, the left side wall of the insulating protective sleeve is positioned between the positive connecting sheet and the battery shell;
and the right side wall of the insulating protective sleeve is positioned between the negative electrode connecting sheet and the battery shell.
Preferably, when the battery main body comprises two pole groups, the positive connecting sheet comprises two pole group positive lug welding areas and the negative connecting sheet comprises two pole group negative lug welding areas correspondingly;
the positive lug welding areas of the two pole groups are respectively positioned at the front side and the rear side of the positive connecting piece main body and are distributed at different heights;
the two pole group negative pole ear welding areas are respectively positioned at the front side and the rear side of the negative pole connecting sheet main body and are different in distribution height.
Preferably, when the battery main body comprises four pole groups, the positive connecting sheet comprises four pole group positive lug welding areas, and the negative connecting sheet comprises four pole group negative lug welding areas;
the front side and the rear side of the positive connecting sheet main body are respectively provided with two pole group positive lug welding areas with different heights;
the front side and the rear side of the negative electrode connecting sheet main body are respectively provided with two pole group negative electrode lug welding areas with different heights.
Preferably, the shape of the positive tab welding area of the pole group and the negative tab welding area of the pole group is rectangular;
the positive connecting piece bending hole and the negative connecting piece bending hole are semicircular.
By above the utility model provides a technical scheme is visible, compares with prior art, the utility model provides a square lithium ion battery of high energy high power, its structural design science can show the battery inner space that reduces positive connection piece and the required occupation of negative pole connection piece, guarantees the volume of battery utmost point group, is favorable to the promotion of battery capacity, guarantees the output of battery, has the production practice meaning of heaviness.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of a high-energy high-power square lithium ion battery provided by the present invention, when a tab welding area on a connecting sheet is not bent, a pole assembly body is provided;
fig. 2 is a schematic view of a three-dimensional structure of a high-energy high-power square lithium ion battery provided by the present invention, when a tab welding area on a bent connecting sheet is formed, a pole assembly body is provided;
fig. 3 is a schematic view of an assembly structure of a high-energy high-power square lithium ion battery provided by the present invention;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
fig. 5 is a schematic diagram of an assembly structure of a battery cover, a positive connecting sheet and a negative connecting sheet in the high-energy high-power square lithium ion battery provided by the present invention;
fig. 6a is a schematic structural diagram of the positive connection sheet of the first embodiment before bending in the high-energy high-power square lithium ion battery provided by the present invention, and at this time, the positive connection sheet is used to connect the positive electrode tabs of four electrode groups;
fig. 6b is a schematic structural diagram of the negative electrode connecting sheet of the first embodiment before bending in the high-energy high-power square lithium ion battery provided by the present invention, and the negative electrode connecting sheet is used for connecting the negative electrode tabs of the four electrode groups at this time;
fig. 7a is a schematic structural diagram of a positive connection sheet of a second embodiment before bending in a high-energy high-power square lithium ion battery provided by the present invention, where the positive connection sheet is used to connect positive tabs of two electrode groups;
fig. 7b is a schematic structural view of the negative electrode connecting sheet of the second embodiment before bending in the high-energy high-power square lithium ion battery provided by the present invention, and the negative electrode connecting sheet is used for connecting the negative electrode tabs of the two electrode groups at this time;
fig. 8a is a schematic structural diagram of a bent positive connection sheet according to a first embodiment of the present invention in a high-energy high-power square lithium ion battery, where the positive connection sheet is used to connect positive tabs of four electrode groups;
fig. 8b is the utility model provides an among the square lithium ion battery of high energy high power, the structure sketch map of the negative pole connection piece after buckling of the first embodiment of adoption, the negative pole connection piece is used for connecting the negative pole ear of four utmost point groups this moment.
Detailed Description
The technical solution of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 8b, the present invention provides a high energy and high power square lithium ion battery, which includes a battery main body 100;
a battery body 100 provided in a battery case 5 having an open top (the overall shape of the battery case 5 is a rectangular parallelepiped);
a battery body 100 including a battery cover 1, a positive electrode connecting sheet 2, a negative electrode connecting sheet 3, and a plurality of electrode groups 4, which are horizontally distributed;
a battery cover 1 including a bare aluminum plate 10 (i.e., a battery cover main body), a positive electrode post 11, and a negative electrode post 12;
the left end and the right end of the smooth aluminum plate 10 are respectively provided with a positive pole post 11 and a negative pole post 12 in a hole; the concrete structure is as follows: the left end and the right end of the light aluminum plate 10 are respectively provided with a vertically through positive pole mounting hole and a vertically through negative pole mounting hole, a positive pole 11 is arranged on the positive pole mounting hole, and a negative pole 12 is arranged on the negative pole mounting hole;
the bottom of the anode pole 11 is welded with the upper part of the anode connecting sheet 2 by laser;
the bottom of the cathode pole 12 is welded with the upper part of the cathode connecting sheet 3 by laser;
the positive connecting sheet 2 is welded with the positive lugs 401 of all the pole groups 4;
the negative connecting sheet 3 is welded with the negative lugs 402 of all the pole groups 4;
for the positive electrode tab 2, it includes: the positive electrode connecting piece comprises a positive electrode connecting piece main body 200, a positive electrode connecting piece battery cover pole column welding area 201, a plurality of pole group positive electrode lug welding areas 202, positive electrode connecting piece dividing slits 203 and positive electrode connecting piece bending holes 204;
a positive electrode connecting sheet battery cover pole column welding area 201 which is positioned at the upper part of the positive electrode connecting sheet main body 200 and is welded with the bottom part of the positive electrode pole column 11;
a plurality of positive tab welding areas 202 of the electrode group, which are positioned at the middle and lower parts of the positive connecting sheet main body 200;
the number of the positive lug welding areas 202 of the pole groups is equal to that of the pole groups 4;
each positive lug welding area 202 of the pole group is respectively used for being welded with a positive lug 401 of one pole group 4;
each joint of each positive lug welding area 202 of each pole group and the positive connecting piece main body 200 is respectively provided with a positive connecting piece bending hole 204;
the middle part and the longitudinal middle position of the lower part of the positive connecting piece main body 200 are provided with vertically distributed positive connecting piece dividing slits 203;
for the negative electrode connection piece 3, it includes: the negative electrode connecting piece comprises a negative electrode connecting piece main body 300, a negative electrode connecting piece battery cover pole welding area 301, a plurality of pole group negative electrode lug welding areas 302, a negative electrode connecting piece dividing slit 303 and a negative electrode connecting piece bending hole 304;
a negative electrode tab battery cover post welding area 301 located at the upper part of the negative electrode tab main body 300 and welded with the bottom of the negative electrode post 12;
a plurality of electrode group negative tab welding areas 302 positioned at the middle and lower parts of the negative connection sheet main body 300;
the number of the pole group negative lug welding areas 302 is equal to that of the pole groups 4;
each pole group negative tab welding area 302 is respectively used for welding with a negative tab 402 of one pole group 4;
each connection position of each pole group negative pole lug welding area 302 and the negative pole connecting piece main body 300 is respectively provided with a negative pole connecting piece bending hole 304;
the negative electrode tab main body 300 has a vertically arranged negative electrode tab dividing slit 303 at a longitudinally intermediate position of the middle and lower portions thereof.
It should be noted that, in the present invention, the smooth aluminum plate 10 is a common flat plate cover plate.
In the utility model, the positive connecting piece 2 and the negative connecting piece 3 are in a bilateral symmetry structure; however, positive electrode tab 2 and negative electrode tab 3 are different in material and wall thickness. The positive connecting piece 2 is made of aluminum, and the negative connecting piece 3 is made of copper. The positive connecting piece 2 and the negative connecting piece 3 can be designed to have corresponding thicknesses according to the copper-aluminum overcurrent capacity.
In the utility model, in the concrete implementation, an insulating protective sleeve 6 is arranged in the battery shell 5;
all the pole groups are positioned in an insulating protective sleeve 6 with an opening at the top (the whole shape of the insulating protective sleeve 6 is cuboid);
the left side wall of the insulating protective sleeve 6 is positioned between the positive electrode connecting sheet 2 and the battery case 5;
and the right side wall of the insulating protective sleeve 6 is positioned between the negative electrode connecting sheet 3 and the battery shell 5.
Note that the insulating sheath 6 is provided to prevent a short circuit between the connection pieces (including the positive connection piece 2 and the negative connection piece 3) and the battery case 5.
In the present invention, in particular, when the battery main body 100 includes two electrode groups, correspondingly, the positive electrode connecting piece 2 includes two electrode group positive electrode tab welding areas 202, and the negative electrode connecting piece 3 includes two electrode group negative electrode tab welding areas 302;
the positive lug welding areas 202 of the two pole groups are respectively positioned at the front side and the rear side of the positive connecting sheet main body 200 and have different distribution heights;
the two electrode assembly negative tab welding areas 302 are respectively positioned at the front side and the rear side of the negative connection sheet main body 300, and are distributed at different heights.
It should be noted that when the battery includes two electrode groups, in order to increase the welding area between the tab welding area and the tab on the connection pieces (e.g., the negative electrode connection piece and the positive electrode connection piece), different symmetrical structures may be provided, as shown in fig. 7a and 7 b.
In the present invention, in a specific implementation, when the battery main body 100 includes four electrode groups 4, correspondingly, the positive electrode connecting sheet 2 includes four electrode group positive electrode tab welding areas 202, and the negative electrode connecting sheet 3 includes four electrode group negative electrode tab welding areas 302;
the front side and the rear side of the positive connecting sheet main body 200 are respectively provided with two positive lug welding areas 202 of the pole group with different heights;
the negative electrode connecting piece main body 300 has two electrode group negative electrode tab welding areas 302 with different heights on the front and rear sides.
Referring to fig. 1, four pole groups 4 are arranged parallel to each other.
It should be noted that, for the utility model discloses, when the battery includes four utmost point groups 4 or six utmost point groups 4, set up utmost point group utmost point ear weld zone on the connection piece to two bisymmetry structures, and the shape design in weld zone becomes the ladder shape (being the rectangle in the figure) to this reduces the required length of single utmost point group utmost point ear, as shown in fig. 1.
In the present invention, the positive tab welding area 202 and the negative tab welding area 302 are rectangular in shape.
It should be noted that the shapes and sizes of the positive tab welding areas 202 of the multiple electrode groups and the negative tab welding areas 302 of the multiple electrode groups may be the same, or may be different from each other or may be partially the same, or partially different, and the positive tab welding areas 202 of the multiple electrode groups and the negative tab welding areas 302 of the multiple electrode groups are used for correspondingly connecting the positive tabs and the negative tabs on the electrode groups, so as to meet the welding connection requirements with the multiple electrode groups with different lateral widths.
In the present invention, in the specific implementation, the shape of the positive electrode connecting piece bending hole 204 and the negative electrode connecting piece bending hole 304 may be semicircular or circular (e.g., one-third circular) in other proportion, so as to facilitate bending of the welding area (i.e., the positive electrode tab welding area 202 of the electrode group and the negative electrode tab welding area 302 of the electrode group).
The utility model discloses in, on specifically realizing, positive pole connecting piece dividing slit 203 and negative pole connecting piece dividing slit 303 for prevent that the weld zone of symmetric distribution from when the utmost point ear through ultrasonic welding and utmost point group welds mutually, preventing ultrasonic welding's mutual interference.
The utility model discloses in, on specifically realizing, for reducing cost of transportation, negative pole connection piece and positive connection piece are dull and stereotyped structure when the supplied materials, dull and stereotyped structure welds with the utmost point post on the battery cover after the technology of buckling, and negative pole connection piece and positive connection piece state of buckling are as shown in fig. 8a and fig. 8 b.
It should be noted that, when a four-pole battery is specifically assembled, first, as shown in fig. 8a and 8b, the positive connection plate and the negative connection plate are vertically bent for the first time, then, as shown in fig. 5, the positive connection plate and the negative connection plate are distributed and welded with the positive pole post and the negative pole post on the battery cover, then, as shown in fig. 1, the positive lugs and the negative lugs of a plurality of pole groups are respectively welded with the positive lug welding area 202 of the pole group on the positive connection plate 2 and the negative lug welding area 302 of the pole group on the negative connection plate 3, then, as shown in fig. 2, the positive lug welding area 202 of the pole group and the negative lug welding area 302 of the pole group are horizontally bent again, so that the positive lug welding area 202 of the pole group and the negative lug welding area 302 of the pole group are respectively attached to the positive connection plate main body 200 and the negative connection plate 300 of the pole group, thereby forming the battery main body 100, and finally, as shown in fig. 3 and 4, the battery body is assembled into the insulating protective sheath 6 and the battery case 5.
It should be noted, to the utility model discloses, with the width direction of anodal connection piece and negative pole connection piece, the design is the same with the width direction of battery cover, all set up the utmost point ear weld zone that can buckle simultaneously on anodal connection piece and negative pole connection piece (utmost point group anodal ear weld zone 202 and utmost point group negative pole ear weld zone 302), the utmost point ear weld zone is only two connection piece wall thicknesses after buckling, therefore, can the shared battery inner space of greatly reduced connection piece, and simultaneously, the utmost point ear weld zone that is used for welding utmost point group utmost point ear that has on anodal connection piece and the negative pole connection piece, its area is also great, the output of battery has been increased.
The utility model discloses, can require differently according to the battery width of different grade type battery, can correspond the utmost point ear weld zone (specifically including utmost point ear welded zone 202 and utmost point group negative pole ear weld zone 302) of designing the utmost point group of different quantity and different quantity, different shape size (having the utmost point ear that the different width connects the utmost point group) respectively, reduce the utmost point ear length of single utmost point group, less utmost point ear pleating scheduling problem because the utmost point ear length overlength of utmost point group brings promotes the qualification rate of battery product.
To sum up, compare with prior art, the utility model provides a pair of square lithium ion battery of high energy high power, its structural design science can show the battery inner space that reduces positive pole connection piece and negative pole connection piece and need occupy, guarantees the volume of battery utmost point group, is favorable to the promotion of battery capacity, guarantees the output of battery, has the production practice meaning of great importance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A high-energy high-power prismatic lithium ion battery, characterized by comprising a battery main body (100);
a battery body (100) provided in a battery case (5) having an open top;
the battery comprises a battery body (100) and a plurality of battery packs, wherein the battery body comprises a battery cover (1), a positive connecting sheet (2), a negative connecting sheet (3) and a plurality of electrode groups (4) which are horizontally distributed;
the battery cover (1) comprises a smooth aluminum plate (10), a positive pole post (11) and a negative pole post (12);
the left end and the right end of the smooth aluminum plate (10) are respectively provided with an anode pole (11) and a cathode pole (12) in a hole; the bottom of the positive pole column (11) is welded with the upper part of the positive connecting sheet (2) by laser;
the bottom of the cathode pole (12) is welded with the upper part of the cathode connecting sheet (3) by laser;
the positive connecting sheet (2) is welded with the positive lugs (401) of all the pole groups (4);
the negative electrode connecting sheet (3) is welded with the negative electrode lugs (402) of all the electrode groups (4);
for the positive electrode tab (2), it includes: the battery comprises a positive connecting sheet main body (200), a positive connecting sheet battery cover pole column welding area (201), a plurality of pole group positive pole ear welding areas (202), a positive connecting sheet dividing slit (203) and a positive connecting sheet bending hole (204);
the positive electrode connecting sheet battery cover pole column welding area (201) is positioned at the upper part of the positive electrode connecting sheet main body (200) and is welded with the bottom part of the positive electrode pole column (11);
a plurality of positive lug welding areas (202) of the pole group, which are positioned in the middle and the lower part of the positive connecting piece main body (200);
the number of the positive lug welding areas (202) of the pole groups is equal to that of the pole groups (4);
each positive lug welding area (202) of the pole group is respectively used for being welded with a positive lug (401) of one pole group (4);
each joint of each positive lug welding area (202) of each pole group and the positive connecting sheet main body (200) is respectively provided with a positive connecting sheet bending hole (204);
the middle part and the longitudinal middle position of the lower part of the positive connecting piece main body (200) are provided with vertically distributed positive connecting piece dividing slits (203);
for the negative electrode connection piece (3), it includes: the negative electrode connecting plate comprises a negative electrode connecting plate main body (300), a negative electrode connecting plate battery cover pole welding area (301), a plurality of pole group negative electrode lug welding areas (302), negative electrode connecting plate dividing slits (303) and negative electrode connecting plate bending holes (304);
the negative connecting sheet battery cover pole welding area (301) is positioned at the upper part of the negative connecting sheet main body (300) and is welded with the bottom of the negative pole (12);
a plurality of pole group negative pole ear welding areas (302) which are positioned at the middle part and the lower part of the negative pole connecting sheet main body (300);
the number of the pole group negative pole lug welding areas (302) is equal to that of the pole groups (4);
each pole group negative pole lug welding area (302) is respectively used for being welded with a negative pole lug (402) of one pole group (4);
each connection part of each pole group negative pole lug welding area (302) and the negative pole connection piece main body (300) is respectively provided with a negative pole connection piece bending hole (304);
the middle part and the longitudinal middle position of the lower part of the negative pole connecting piece main body (300) are provided with a negative pole connecting piece dividing slit (303) which is vertically distributed.
2. The high energy high power prismatic lithium ion battery according to claim 1, wherein inside the battery case (5), an insulating protective sheath (6) is provided;
all the pole groups are positioned in an insulating protective sleeve (6) with an opening at the top.
3. The high-energy high-power prismatic lithium ion battery according to claim 2, wherein the left side wall of the insulating protective sheath (6) is located at a position between the positive electrode connecting sheet (2) and the battery case (5);
the right side wall of the insulating protective sleeve (6) is positioned between the negative electrode connecting sheet (3) and the battery shell (5).
4. The high energy high power prismatic lithium-ion battery of claim 1, wherein when the battery body (100) comprises two pole groups, the positive connection tab (2) comprises two pole group positive tab weld areas (202) and the negative connection tab (3) comprises two pole group negative tab weld areas (302), respectively;
the two positive lug welding areas (202) of the pole group are respectively positioned at the front side and the rear side of the positive connecting sheet main body (200) and have different distribution heights;
and the two pole group negative pole lug welding areas (302) are respectively positioned at the front side and the rear side of the negative pole connecting piece main body (300) and have different distribution heights.
5. The high energy high power prismatic lithium-ion battery of claim 1, wherein when the battery body (100) comprises four pole groups (4), the positive connection tab (2) comprises a four pole group positive tab weld zone (202) and the negative connection tab (3) comprises a four pole group negative tab weld zone (302), respectively;
the front side and the rear side of the positive connecting sheet main body (200) are respectively provided with two positive lug welding areas (202) of the pole group with different heights;
the front side and the rear side of the negative electrode connecting sheet main body (300) are respectively provided with two pole group negative electrode lug welding areas (302) with different heights.
6. The high energy high power prismatic lithium ion battery of any of claims 1 to 5, wherein the positive tab weld area (202) of the pack and the negative tab weld area (302) of the pack are rectangular in shape;
the positive connecting piece bending hole (204) and the negative connecting piece bending hole (304) are semicircular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220402422.1U CN217444472U (en) | 2022-02-28 | 2022-02-28 | High-energy high-power square lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220402422.1U CN217444472U (en) | 2022-02-28 | 2022-02-28 | High-energy high-power square lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217444472U true CN217444472U (en) | 2022-09-16 |
Family
ID=83213866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220402422.1U Active CN217444472U (en) | 2022-02-28 | 2022-02-28 | High-energy high-power square lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217444472U (en) |
-
2022
- 2022-02-28 CN CN202220402422.1U patent/CN217444472U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3678208B1 (en) | Battery module, battery pack, and vehicle | |
| US7405022B2 (en) | Secondary battery pack having configuration of alternative orientation | |
| US20230015012A1 (en) | Rechargeable battery | |
| CN101478034B (en) | Protective circuit board, battery pack, and associated methods | |
| CN203326006U (en) | Battery module | |
| EP1834365B1 (en) | Process for preparation of secondary battery module | |
| US11133554B2 (en) | Battery pack and vehicle | |
| KR102209769B1 (en) | Battery Module | |
| JP2021501457A (en) | Battery module and battery pack with busbar | |
| CN104377339A (en) | Rechargeable battery pack | |
| CN216354652U (en) | Electrode assembly and power battery | |
| KR20170142481A (en) | Secondary battery module, and secondary battery pack including the same | |
| JP7551746B2 (en) | Battery pack, electronic device including same, and automobile | |
| CN216488280U (en) | Electric core with novel battery cover plate connecting structure | |
| CN217444472U (en) | High-energy high-power square lithium ion battery | |
| CN217655970U (en) | Battery cover plate assembly and power battery | |
| CN115832628B (en) | Energy storage device and electric equipment | |
| CN217589341U (en) | Connecting sheet and bridging device for battery interior and battery | |
| CN216750078U (en) | Battery cell shell, battery and battery module | |
| CN220042204U (en) | Battery and battery device | |
| CN110993870A (en) | Electrode connecting sheet and battery module | |
| KR20210076770A (en) | The Case For Secondary Battery And The Pouch Type Secondary Battery | |
| CN217655967U (en) | Battery and battery pack | |
| CN218274987U (en) | Battery structure and electronic equipment with same | |
| CN220086233U (en) | Battery case, module unit and battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230720 Address after: 266000 No. 6, Minshan Road, Huangdao District, Qingdao, Shandong Patentee after: LISHEN (QINGDAO) NEW ENERGY CO.,LTD. Patentee after: TIANJIN LISHEN NEW ENERGY TECHNOLOGY CO.,LTD. Address before: 266000 No. 6, Minshan Road, Huangdao District, Qingdao, Shandong Patentee before: LISHEN (QINGDAO) NEW ENERGY CO.,LTD. |
|
| TR01 | Transfer of patent right |