CN216354464U - Battery cover plate assembly and lithium battery - Google Patents
Battery cover plate assembly and lithium battery Download PDFInfo
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- CN216354464U CN216354464U CN202120943383.1U CN202120943383U CN216354464U CN 216354464 U CN216354464 U CN 216354464U CN 202120943383 U CN202120943383 U CN 202120943383U CN 216354464 U CN216354464 U CN 216354464U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to the technical field of batteries, and provides a battery cover plate assembly and a lithium battery. The battery cover plate component comprises a cover plate and a battery connecting piece, wherein the cover plate comprises a cover plate main body and a first connecting part connected with the cover plate main body, the battery connecting piece comprises a connecting piece main body and a cover plate connecting part connected with the first connecting part, and the first connecting part is an annular boss which is positioned on the periphery of the cover plate main body and protrudes towards the battery connecting piece. The lithium battery is provided with a battery core pole group, a shell and the battery cover plate component. The battery cover plate assembly can enable the cover plate and the battery connecting sheet to be convenient to weld, large in welding area and strong in overcurrent capacity, and improves the performance of the lithium battery.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery cover plate assembly. In addition, the utility model also relates to a lithium battery comprising the battery cover plate component.
Background
With the gradual depletion of petroleum resources, it is a necessary trend to develop an electric vehicle using electricity as a power source to replace the existing fuel vehicle, and the importance of the electric vehicle as a core component of the electric vehicle, i.e., a power battery, is particularly prominent. Lithium ion batteries are important objects for research and development of power batteries for electric vehicles due to their characteristics of high energy density, long service life, high voltage, portability and the like.
The structural member of the lithium ion battery is an important component of the lithium ion power battery, and not only provides guarantee for the lithium ion battery in the aspect of safety and reliability, but also simultaneously considers the connection between an internal chemical system and an external module of the lithium ion battery. Because various connection relations exist in the structural member, and the requirements of sealing performance and overflowing performance need to be met, the design scheme of the structural member is particularly important. The battery connecting sheet is used as an internal bearing and opening structure of the battery core and an important overcurrent carrier of the lithium ion battery, and generally needs to be fixedly connected with a cover plate of a battery shell, but the battery connecting sheet and the cover plate are difficult to weld and operate and easy to weld the connecting sheet in the prior art, so that the performance of the lithium ion battery can be influenced, and the difficulty of assembling the lithium ion battery is increased.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a battery cover plate assembly, so that a cover plate and a battery connecting sheet are welded conveniently, a welding area is large, a current-carrying capacity is strong, and a performance of a lithium battery is improved.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
the battery cover plate component comprises a cover plate and a battery connecting piece, wherein the cover plate comprises a cover plate main body and a first connecting portion connected with the cover plate main body, the battery connecting piece comprises a connecting piece main body and a cover plate connecting portion connected with the first connecting portion, and the first connecting portion is arranged on the periphery of the cover plate main body and faces towards an annular boss protruding from the battery connecting piece.
Furthermore, the cover plate further comprises a second connecting portion used for being connected with the shell, the second connecting portion is located on the periphery of the first connecting portion, and the first connecting portion protrudes towards the battery connecting piece relative to the cover plate main body and the second connecting portion.
Furthermore, be provided with explosion-proof nick on the apron main part, the compressive strength of explosion-proof nick is less than the compressive strength of apron main part.
Furthermore, the cover plate connecting part is welded with the first connecting part, and the thickness of the cover plate connecting part is larger than that of the first connecting part.
Further, the connecting sheet main body comprises a welding plane and a reinforcing structure connected with the welding plane, and the reinforcing structure protrudes towards the cover plate relative to the welding plane;
the thickness of the reinforcing structure is larger than that of the welding plane, or in the projection direction of the welding plane, the height of one side, back to the cover plate, of the reinforcing structure is larger than that of one side, back to the cover plate, of the welding plane.
Further, the cover plate connecting portion is connected with the periphery of the connecting piece main body, and the thickness of the cover plate connecting portion is the same as that of the reinforcing structure.
Further, the reinforcing structure comprises a reinforcing boss and at least one strip-shaped boss, the reinforcing boss is located in the central area of the connecting piece main body, and the strip-shaped boss is arranged to extend from the reinforcing boss to the outer side to the cover plate connecting portion.
Furthermore, a slotted hole for permeating electrolyte is formed in the connecting sheet main body, and the slotted hole is located in the welding plane and located on one side or two sides of the strip-shaped boss.
Furthermore, the slotted hole is a long strip-shaped through hole extending along the length direction of the strip-shaped boss.
Compared with the prior art, the battery cover plate component has the following advantages:
(1) according to the battery cover plate assembly, the first connecting part on the cover plate is matched with the cover plate connecting part on the battery connecting sheet for welding, so that the cover plate and the battery connecting sheet can be connected through laser penetration welding at one side of the cover plate back to the battery connecting sheet, the welding area is large, the operation of the technological process is simple, and the overcurrent capacity is strong; first connecting portion set up to be located the platform structure of buckling of apron main part periphery, are favorable to increasing the holistic intensity of apron for battery connection piece can laminate better with the apron, are favorable to the welding.
(2) According to the battery cover plate assembly, the cover plate connecting part is set to be thicker than the first connecting part, so that when laser penetration welding is carried out on the first connecting part, welding penetration of a battery connecting sheet can be effectively avoided, and the overall performance of a lithium battery is ensured; the explosion-proof nicks can be broken when the air pressure in the lithium battery reaches a certain degree, so that the internal pressure is released, and the safety of the lithium battery is improved; the additional strengthening thickness of connection piece main part is greater than the welding plane, not only is convenient for weld battery connection piece and electric core utmost point group from the welding plane, can strengthen the bulk strength of battery connection piece moreover.
The utility model also aims to provide a lithium battery, so that the cover plate and the battery connecting sheet are convenient to weld, the welding area is large, the overcurrent capacity is strong, and the performance of the lithium battery is improved.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
a lithium battery is provided with a battery core pole group, a shell and a battery cover plate component according to any one of the technical schemes, wherein the battery core pole group is positioned in the shell, one side of a battery connecting plate back to a cover plate is connected with the battery core pole group, and the cover plate is connected with the opening end of the shell.
Compared with the prior art, the lithium battery and the battery cover plate assembly have the same advantages, and the description is omitted.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a battery cover plate assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a cover plate according to an embodiment of the present invention after being connected to a battery connecting tab;
fig. 3 is a schematic structural diagram of a connection between a battery cover plate assembly and a housing according to an embodiment of the present invention.
Description of reference numerals:
1 cover plate 11 cover plate body
12 first connecting part 13 explosion-proof nick
14 second connecting part 2 battery connecting sheet
21 connecting the sheet main body 211 to the welding plane
212 reinforcing boss 213 strip-shaped boss
22 cover plate connecting part 23 slotted hole
3 welding direction of cover plate and connecting sheet of shell a
b cover plate and shell welding direction
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
In addition, the terms "upper", "lower", "inside", "outside", and the like referred to in the embodiments of the present invention indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, the battery-based case 3, "upper" refers to the top of the case 3, and correspondingly, "lower" refers to the bottom of the case 3, "inner" refers to the inside of the case 3, and "outer" refers to the outside of the case 3. The terminology is based on the orientations and positional relationships illustrated in the drawings and is not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and is not to be construed as limiting the utility model.
It is to be understood that, unless expressly stated or limited otherwise, the terms "connected," "mounted," and "contacting" are intended to be open-ended, i.e., connected as either a fixed or removable connection or an integral connection; the components may be directly connected or indirectly connected through an intermediate medium, or the components may be connected through an intermediate medium or the components may be in an interactive relationship with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
A battery cover plate assembly according to a basic embodiment of the present invention, referring to fig. 1 and 2, includes a cover plate 1 and a battery tab 2, the cover plate 1 includes a cover plate body 11 and a first connection portion 12 connected to the cover plate body 11, the battery tab 2 includes a tab body 21 and a cover plate connection portion 22 for connection to the first connection portion 12, and the first connection portion 12 is provided as an annular boss located at the periphery of the cover plate body 11 and protruding toward the battery tab 2.
In the utility model, the first connecting part 12 is arranged as an annular boss which is positioned at the periphery of the cover plate main body 11 and protrudes towards the battery connecting piece 2, specifically, the first connecting part 12 is bent from the outer edge of the cover plate main body 11 towards the direction of the battery connecting piece 2 and then bent to be parallel or approximately parallel to the cover plate main body 11; the battery cover plate component can be used as a positive cover plate of a lithium battery, can also be used as a negative cover plate of the lithium battery, can be suitable for a round lithium battery, and can also be suitable for lithium batteries with other shapes or structures; when the cap plate 1 and the battery tab 2 are mounted, the first connection portion 12 and the cap plate connection portion 22 are positioned to correspond to each other and welded so that a certain gap is formed between the cap plate body 11 and the tab body 21.
In the battery cover plate assembly provided by the above basic solution, referring to fig. 2, when the cover plate 1 and the battery connecting plate 2 are mounted, welding is performed along the cover plate and connecting plate welding direction a from the side of the first connecting portion 12 opposite to the cover plate connecting portion 22, so as to connect and fix the cover plate connecting portion 22 and the first connecting portion 12, preferably, the cover plate connecting portion 22 and the first connecting portion 12 are connected in a laser penetration welding manner; at this time, the welding area between the cover plate connecting part 22 and the first connecting part 12 is large, the welding process is simple to operate, and the overcurrent capacity is strong; first connecting portion 12 sets up to be located the platform structure of buckling of apron main part 11 periphery, is favorable to increasing the holistic intensity of apron 1 for battery connection piece 2 can laminate better with apron 1, is favorable to the welding.
As a preferred embodiment of the battery cover plate assembly in the present invention, the thickness of the cover plate connecting portion 22 is greater than that of the first connecting portion 12, so that the battery connecting sheet 2 can be effectively prevented from being welded through when laser penetration welding is performed from the first connecting portion 12, thereby ensuring the overall performance of the lithium battery.
In the present invention, when the battery cover plate assembly is applied to a lithium battery, the cover plate 1 may be connected to the open end of the case 3 at the outer periphery of the first connecting portion 12, and as a preferred embodiment of the cover plate 1 of the present invention, the cover plate 1 further includes a second connecting portion 14 for connecting to the case 3, the second connecting portion 14 being located at the outer periphery of the first connecting portion 12, and the first connecting portion 12 being protruded toward the battery connecting piece 2 with respect to the cover plate main body 11 and the second connecting portion 14. When the cover plate 1 is mounted with the housing 3, the second connecting portion 14 is lapped on the open end of the housing 3 to facilitate the seal welding of the housing 3 and the cover plate 1. Specifically, referring to fig. 3, the second connection portion 14 and the case 3 are weld-fixed from the cover-to-case welding direction b. The first connection portion 12 protrudes toward the battery tab 2, so that the first connection portion 12 and the cover plate connection portion 22 can be better attached, facilitating welding.
As another preferred embodiment of the cover plate 1 of the present invention, the cover plate body 11 is provided with the explosion-proof score 13, and the compression strength of the explosion-proof score 13 is smaller than that of the cover plate body 11. In the present invention, the compressive strength specifically means a strength limit of the pressure or force that the explosion-proof score 13 or the cover plate body 11 can bear. The explosion-proof nick 13 set up can break when the inside atmospheric pressure of lithium cell reaches the certain degree to release internal pressure, improve the security of lithium cell. Specifically, the cover plate main body 11 may be scored using a mold to obtain the explosion-proof score 13.
Preferably, the explosion-proof notch 13 is a groove with a closed shape on the cover plate main body 11, such as a circular shape or an oval shape, so that the resistance when the explosion-proof notch 13 is broken is small, and the pressure inside the lithium battery is released more quickly.
As a preferred embodiment of the connecting piece body 21 in the present invention, the connecting piece body 21 includes a welding plane 211 and a reinforcing structure connected to the welding plane 211, the reinforcing structure protruding toward the cover plate 1 with respect to the welding plane 211. At this time, the reinforcing structure may be set to have a thickness greater than that of the welding plane 211, and the welding plane 211 has a smaller thickness, so that the battery connecting piece 2 and the battery cell pole group are conveniently welded from the welding plane 211, and the overall strength of the battery connecting piece 2 can be enhanced. Under the preferred condition, apron connecting portion 22 is connected with the periphery of connection piece main part 21, and the thickness of apron connecting portion 22 is the same with additional strengthening's thickness for battery connection piece 2's structure is more level and more smooth, more is favorable to processing production.
The reinforcing structure may also be configured to have a thickness less than or equal to the thickness of the welding plane 211, and the height of the side of the reinforcing structure facing away from the cover plate 1 is greater than the height of the side of the welding plane 211 facing away from the cover plate 1 in the projection direction of the welding plane 211. In the present invention, the projection direction of the welding plane 211 specifically refers to the thickness extension direction of the welding plane 211 when the battery cover plate assembly is horizontally placed and the protruding direction of the reinforcing structure of the battery connecting plate 2 is upward, at this time, the height of the side of the reinforcing structure back to the cover plate 1 is greater than the height of the side of the welding plane 211 back to the cover plate 1, that is, the side of the reinforcing structure back to the cover plate 1 and the side of the welding plane 211 back to the cover plate 1 form a groove structure, so that the reinforcing structure arches upward to form the protruding structure of the reinforcing structure.
In the present invention, the reinforcing structure may be provided as a conventional structure capable of enhancing the structural strength of the connecting piece main body 21, such as a thickened plate connected to the welding plane 211, or a reinforcing plate having a groove structure. As a preferred embodiment of the reinforcing structure in the present invention, the reinforcing structure includes a reinforcing protrusion 212 and at least one rib-shaped protrusion 213, the reinforcing protrusion 212 is located at a central region of the connecting piece main body 21, and the rib-shaped protrusion 213 is provided to extend from the reinforcing protrusion 212 to the outside to the cover plate connecting portion 22. Preferably, the strip-shaped bosses 213 are provided in plural and uniformly distributed on the tab body 21 so as to be able to improve the overall structural strength of the tab body 21, thereby enabling the battery tab 2 to be designed in a larger size.
In the present invention, the connecting piece main body 21 may be designed according to the shape of the battery cell pole group, and when applied to a cylindrical battery cell pole group, the connecting piece main body 21 is correspondingly circular, and the strip-shaped bosses 213 are provided to extend outward from the reinforcing bosses 212 in the radial direction of the connecting piece main body 21. At this time, the bar-shaped projection 213 is provided to extend outward in the radial direction of the connection piece main body 21, specifically, the bar-shaped projection 213 extends from the bar-shaped projection 212 toward the cover plate connection portion 22 in the direction indicated by a certain radius of the connection piece main body 21, so that the entire surface of the connection piece main body 21 can perform a strength increasing action via the bar-shaped projection 213 to some extent. Specifically, 3 strip-shaped bosses 213 are provided, and a "Y" shaped structure or a similar "Y" shaped structure is formed on the surface of the connecting piece main body 21.
In a preferred embodiment of the connecting piece main body 21 of the present invention, the connecting piece main body 21 is provided with a groove hole 23 for penetrating an electrolyte. In the utility model, no strict requirement is made on the form of the slotted hole 23 on the connecting sheet main body 21, and in order to meet the platform requirement of the electric automobile, the size of the lithium battery is developed towards a thicker and longer direction, so the size of the battery connecting sheet 2 is also correspondingly increased according to the size of the lithium battery, the area of the slotted hole 23 which can be opened is also increased, and in specific application, the size and the shape of the slotted hole 23 can be reasonably designed on the premise of meeting the rigidity and the strength based on the overall dimension of the connecting sheet main body 21. For example, the slot 23 may be a through hole provided on the soldering plane 211 or the reinforcing structure. Preferably, the slot 23 is located on the welding plane 211 and is located on one side or both sides of the bar-shaped boss 213.
As a preferred embodiment of the slot 23 in the present invention, the slot 23 is a through hole with a long strip shape extending along the length direction of the strip-shaped boss 213, so as to better promote the penetration of the electrolyte and improve the working efficiency of the lithium battery cell.
Based on the above battery cover plate assembly, a lithium battery provided in a second aspect of the utility model, referring to fig. 3, is provided with a battery core electrode group, a casing 3 and the battery cover plate assembly according to any one of the above technical solutions, wherein the battery core electrode group is located in the casing 3, one side of the battery connecting plate 2 facing away from the cover plate 1 is connected with the battery core electrode group, and the cover plate 1 is connected with an open end of the casing 3.
It should be noted that the casing 3 may be provided with an opening at one end or both ends, and preferably, the battery cover plate assembly of the present invention is connected to the casing 3 as a negative electrode cover plate.
As a relatively preferred specific embodiment of the lithium battery in the present invention, the lithium battery comprises a battery cover plate assembly, a housing 3 and a battery cell pole group located in the housing 3, wherein the battery cover plate assembly comprises a cover plate 1 and a battery connecting piece 2, the cover plate 1 comprises a cover plate main body 11, a first connecting portion 12 connected to the cover plate main body 11 and a second connecting portion 14 used for connecting to the housing 3, the first connecting portion 12 is an annular boss located between the cover plate main body 11 and the second connecting portion 14, the first connecting portion 12 protrudes toward the battery connecting piece 2 relative to the cover plate main body 11 and the second connecting portion 14, the cover plate main body 11 is provided with an explosion-proof nick 13 in a closed shape, and the compression strength of the explosion-proof nick 13 is smaller than that of the cover plate main body 11; the battery connecting tab 2 includes a connecting tab main body 21 and a cover plate connecting portion 22 for connecting with the first connecting portion 12, the cover plate connecting portion 22 is connected with the outer periphery of the connecting tab main body 21, the connecting tab main body 21 is circular, the connecting tab main body 21 includes a welding plane 211 and a reinforcing structure connected with the welding plane 211, the reinforcing structure protrudes toward the cover plate 1 with respect to the welding plane 211, the reinforcing structure includes a reinforcing boss 212 and a plurality of strip-shaped bosses 213, the strip-shaped bosses 213 are uniformly distributed on the connecting tab main body 21, the reinforcing boss 212 is located in the central region of the connecting tab main body 21, the strip-shaped bosses 213 are arranged to extend from the reinforcing boss 212 to the cover plate connecting portion 22 along the radial direction of the connecting tab main body 21 to the outside, a slot 23 for permeating electrolyte is provided on the connecting tab main body 21, the slot 23 is located on the welding plane 211 and is located on one side or both sides of the strip-shaped bosses 213, the slot hole 23 is provided as a long strip-shaped through hole extending in the length direction of the strip-shaped boss 213; the thickness of the cover connection 22 and the reinforcement structure are the same and greater than the thickness of the first connection 12 and the welding plane 211; the second connecting portion 14 is connected to the open end of the case 3, and the battery connecting tab 2 is located on the side of the lid plate 1 facing the case 3.
In the lithium battery provided in the foregoing specific embodiment, the installation process may specifically be: firstly, placing the side of the battery connecting sheet 2 protruding back to the reinforcing structure on the battery cell pole group, and welding the side of the battery connecting sheet 2 back to the battery cell pole group from the welding plane 211 so as to connect the battery connecting sheet 2 with the battery cell pole group; placing the first connecting part 12 of the cover plate 1 and the cover plate connecting part 22 of the battery connecting piece 2 at corresponding positions, so that the first connecting part 12 protrudes towards the battery connecting piece 2, and performing laser penetration welding along a cover plate and connecting piece welding direction a from one side of the first connecting part 12 back to the cover plate connecting part 22 to connect and fix the cover plate connecting part 22 and the first connecting part 12, and further installing and fixing the cover plate 1 and the battery connecting piece 2; and placing the battery core pole group into the shell 3, overlapping the second connecting part 14 at the opening end of the shell 3, and hermetically welding the second connecting part 14 and the cover plate 1 in the welding direction b of the cover plate and the shell so as to mount and fix the battery cover plate component and the shell 3.
As can be seen from the above description, the battery cover plate assembly provided by the utility model can be welded by matching the first connecting part 12 on the cover plate 1 with the cover plate connecting part 22 on the battery connecting piece 2, so that the cover plate 1 and the battery connecting piece 2 can be connected by laser penetration welding at the side opposite to the battery connecting piece 2, and the welding area is large, the operation of the technological process is simple, and the overcurrent capacity is strong; the first connecting part 12 is arranged to be a bent platform structure positioned on the periphery of the cover plate main body 11, so that the overall strength of the cover plate 1 is increased, the battery connecting sheet 2 and the cover plate 1 can be better attached, and welding is facilitated; set up apron connecting portion 22 to the thickness that thickness is greater than first connecting portion 12, can effectively avoid welding battery connection piece 2 when carrying out laser penetration welding from first connecting portion 12 to guarantee the holistic performance of lithium cell.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a battery cover plate assembly, its characterized in that, includes apron (1) and battery connection piece (2), apron (1) including apron main part (11) and with first connecting portion (12) that apron main part (11) are connected, battery connection piece (2) including connection piece main part (21) and be used for with apron connecting portion (22) that first connecting portion (12) are connected, first connecting portion (12) set up to be located apron main part (11) periphery and orientation the protruding annular boss that stretches of battery connection piece (2).
2. The battery cover plate assembly according to claim 1, wherein the cover plate (1) further comprises a second connection portion (14) for connection with the housing (3), the second connection portion (14) being located at an outer periphery of the first connection portion (12), the first connection portion (12) being protruded toward the battery connection tab (2) with respect to the cover plate main body (11) and the second connection portion (14).
3. The battery cover plate assembly according to claim 1, wherein the cover plate main body (11) is provided with an explosion-proof score (13), and the compression strength of the explosion-proof score (13) is smaller than that of the cover plate main body (11).
4. The battery cover plate assembly according to any one of claims 1 to 3, wherein the cover plate connection part (22) is welded to the first connection part (12), and the thickness of the cover plate connection part (22) is greater than the thickness of the first connection part (12).
5. The battery cover plate assembly according to any one of claims 1 to 3, wherein the connection piece main body (21) includes a welding plane (211) and a reinforcing structure connected to the welding plane (211), the reinforcing structure protruding toward the cover plate (1) with respect to the welding plane (211);
the thickness of the reinforcing structure is larger than that of the welding plane (211), or in the projection direction of the welding plane (211), the height of one side, back to the cover plate (1), of the reinforcing structure is larger than that of one side, back to the cover plate (1), of the welding plane (211).
6. The battery cover plate assembly according to claim 5, wherein the cover plate connection part (22) is connected to an outer circumference of the connection piece main body (21), and a thickness of the cover plate connection part (22) is the same as a thickness of the reinforcing structure.
7. The battery cover plate assembly according to claim 6, wherein the reinforcing structure comprises a reinforcing boss (212) and at least one bar-shaped boss (213), the reinforcing boss (212) is located at a central region of the connection piece main body (21), and the bar-shaped boss (213) is provided to extend from the reinforcing boss (212) to the cover plate connection part (22) to the outside.
8. The battery cover plate assembly according to claim 7, wherein the connection piece main body (21) is provided with a slot (23) for penetrating an electrolyte, and the slot (23) is positioned on the welding plane (211) and positioned on one side or two sides of the strip-shaped boss (213).
9. The battery cover plate assembly according to claim 8, wherein the slot hole (23) is provided as an elongated through hole extending in a length direction of the bar-shaped boss (213).
10. A lithium battery, characterized in that a cell pole group, a housing (3) and a battery cover plate assembly according to any one of claims 1 to 9 are provided, the cell pole group being located in the housing (3), the side of the battery connection tab (2) facing away from the cover plate (1) being connected to the cell pole group, the cover plate (1) being connected to the open end of the housing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120943383.1U CN216354464U (en) | 2021-04-30 | 2021-04-30 | Battery cover plate assembly and lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120943383.1U CN216354464U (en) | 2021-04-30 | 2021-04-30 | Battery cover plate assembly and lithium battery |
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| Publication Number | Publication Date |
|---|---|
| CN216354464U true CN216354464U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120943383.1U Active CN216354464U (en) | 2021-04-30 | 2021-04-30 | Battery cover plate assembly and lithium battery |
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| CN (1) | CN216354464U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114914596A (en) * | 2022-06-15 | 2022-08-16 | 肇庆小鹏汽车有限公司 | Battery case and battery with same |
| WO2022242744A1 (en) * | 2021-05-21 | 2022-11-24 | 湖北亿纬动力有限公司 | Battery |
| WO2023206981A1 (en) * | 2022-04-29 | 2023-11-02 | 湖北亿纬动力有限公司 | Battery and battery module |
| WO2023240904A1 (en) * | 2022-06-17 | 2023-12-21 | 湖北亿纬动力有限公司 | Battery cell sealed by grooving and sealing process, and battery module |
| WO2024000945A1 (en) * | 2022-06-28 | 2024-01-04 | 湖北亿纬动力有限公司 | End cover assembly, battery, battery module, battery pack and vehicle |
-
2021
- 2021-04-30 CN CN202120943383.1U patent/CN216354464U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022242744A1 (en) * | 2021-05-21 | 2022-11-24 | 湖北亿纬动力有限公司 | Battery |
| WO2023206981A1 (en) * | 2022-04-29 | 2023-11-02 | 湖北亿纬动力有限公司 | Battery and battery module |
| CN114914596A (en) * | 2022-06-15 | 2022-08-16 | 肇庆小鹏汽车有限公司 | Battery case and battery with same |
| WO2023240904A1 (en) * | 2022-06-17 | 2023-12-21 | 湖北亿纬动力有限公司 | Battery cell sealed by grooving and sealing process, and battery module |
| WO2024000945A1 (en) * | 2022-06-28 | 2024-01-04 | 湖北亿纬动力有限公司 | End cover assembly, battery, battery module, battery pack and vehicle |
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