CN218569016U

CN218569016U - Battery cover plate assembly, battery and battery pack

Info

Publication number: CN218569016U
Application number: CN202222767601.8U
Authority: CN
Inventors: 郑旭; 舒宽金; 贺孝武; 邓振; 安苏礼; 何巍
Original assignee: Huizhou Eve Power Battery Co ltd; Hubei Eve Power Co Ltd
Current assignee: Huizhou Eve Power Battery Co ltd; Hubei Eve Power Co Ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-03-03
Anticipated expiration: 2032-10-20

Abstract

The utility model belongs to the technical field of the battery, a battery cover plate subassembly, battery and battery package are disclosed. The battery cover plate component comprises an cover plate base body, an electrode pole and a pressing block, wherein the cover plate base body is provided with a pole mounting hole, the electrode pole is penetrated through the pole mounting hole, the electrode pole comprises a pole main body and a boss, the boss is arranged at one end of the pole main body, the boss is abutted against one side of the cover plate base body, the other end of the pole main body is provided with a groove, and the groove wall of the groove can be turned outwards. The pressing block is arranged on the other side of the cover plate base body, and the groove wall of the groove is outwards folded and pressed on the pressing block. When the battery cover plate assembly is assembled, welding or riveting of a riveting piece is not needed, the assembling process is simple, the assembling efficiency of the battery cover plate assembly is improved, and the manufacturing cost is reduced.

Description

Battery cover plate assembly, battery and battery pack

Technical Field

The utility model relates to a battery technology field especially relates to battery cover plate subassembly, battery and battery package.

Background

The battery cover plate assembly is mainly applied to power batteries in new energy vehicles, however, in the prior art, the cover plate assembly generally comprises a plurality of mutually independent parts such as a positive pole, a negative pole, a polished aluminum sheet, a sealing ring, upper plastic, lower plastic and the like. A plurality of independent parts can form the battery cover plate assembly after a plurality of processes such as inserting, press fitting and welding. At present, the assembly mode that all parts are generally connected through welding or riveting through riveting pieces exists the problem that the assembly process is tedious, the efficiency is lower and the manufacturing cost is higher, and the development of the battery industry is not facilitated.

Therefore, it is desirable to improve a battery cover plate assembly, a battery and a battery pack to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery cover plate subassembly has solved current battery cover plate subassembly equipment technology loaded down with trivial details, and efficiency is lower and the higher problem of manufacturing cost.

To achieve the purpose, the utility model adopts the following technical proposal:

a battery cover plate assembly comprising:

the cover plate comprises a cover plate base body, wherein the cover plate base body is provided with a pole mounting hole;

the electrode post penetrates through the post mounting hole and comprises a post main body and a boss, the boss is arranged at one end of the post main body and abuts against one side of the cover plate base body, a groove is formed in the other end of the post main body, and the groove wall of the groove can be turned outwards;

the pressing block is arranged on the other side of the cover plate base body, and the groove wall of the groove is outwards folded and pressed on the pressing block.

As an alternative of the battery cover plate assembly, a through hole is formed in the pressing block, the electrode pole penetrates through the through hole, the hole wall of one end, penetrating through the electrode pole, of the through hole is an inclined surface, and the groove wall of the groove is outwards folded and pressed on the inclined surface.

As an alternative of the above battery cover plate assembly, a plurality of anti-slip grooves are arranged on the outer circumferential surface of the groove wall of the groove at intervals.

As an alternative to the above-described battery cover plate assembly, the anti-slip groove extends in the axial direction of the electrode post.

As an alternative of the battery cover plate assembly, the depth of the anti-slip groove is less than or equal to 0.2mm.

As an alternative of the battery cover plate assembly, a weight reduction groove is formed in the center of one end, provided with the boss, of the electrode pole.

As an alternative to the above battery cover assembly, the battery cover assembly further includes:

and the sealing element is clamped between the electrode pole and the cover plate base body.

As an alternative of the above battery cover plate assembly, the cover plate base body includes a polished aluminum sheet, a first insulating member and a second insulating member, the first insulating member is disposed between the pressing block and the polished aluminum sheet, and the second insulating member is disposed between the boss of the electrode post and the polished aluminum sheet.

As an alternative of the battery cover plate assembly, the first insulating part and the second insulating part are made of plastic materials.

Another object of the utility model is to provide a battery, the battery cover plate subassembly equipment technology of having solved current battery is loaded down with trivial details, and efficiency is lower and the higher problem of manufacturing cost.

the battery comprises a battery main body and the battery cover plate assembly, wherein the battery cover plate assembly is arranged at the top end of the battery main body.

The utility model discloses a still another aim at provides the battery package, and it is loaded down with trivial details to have solved the battery cover plate subassembly assembly process among the current battery package, and efficiency is lower and the higher problem of manufacturing cost.

a battery pack comprising a plurality of batteries as described above.

Has the advantages that:

the utility model provides a battery cover plate subassembly, set up the briquetting through the one side at the apron base member, and set up the boss in the one end of utmost point post main part, the other end of utmost point post main part sets up the recess, when battery cover plate subassembly is assembled, pass apron base member and briquetting in proper order with electrode utmost point post, make the boss support and lean on the one side at the apron base member, carry out the spinning to the cell wall of recess, make it turn over outwards to roll over and support and press on the briquetting, thereby will lap the base member, briquetting and electrode utmost point post equipment are as an organic whole, electrode utmost point post uses as the connecting piece, need not to weld or set up the riveting piece riveting in addition, assembly process is simple, the packaging efficiency of battery cover plate subassembly has been improved and manufacturing cost has been reduced.

Drawings

Fig. 1 is a schematic perspective view of a battery cover plate assembly according to an embodiment of the present invention;

fig. 2 is a partial structural sectional view of a battery cover plate assembly provided in an embodiment of the present invention;

fig. 3 is a schematic view of a disassembled structure of a battery cover plate assembly provided in an embodiment of the present invention;

fig. 4 is a schematic perspective view of an electrode post provided in an embodiment of the present invention;

fig. 5 is a schematic cross-sectional structure view of an electrode post provided in an embodiment of the present invention;

fig. 6 is a schematic perspective view of a pressing block provided in an embodiment of the present invention.

In the figure:

1. a cover plate base; 11. pole mounting holes; 12. polishing an aluminum sheet; 121. an explosion-proof hole; 122. an explosion-proof sheet; 13. a first insulating member; 131. a limiting groove; 14. a second insulating member; 141. a grid;

2. an electrode post; 21. a pole body; 22. a boss; 23. a groove; 24. an anti-slip groove; 25. a weight reduction groove;

3. pressing into blocks; 31. perforating holes; 311. a bevel;

4. and a seal member.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

The embodiment provides a battery cover plate assembly, a battery and a battery pack, the battery mainly indicates a power battery applied to a new energy automobile, the battery comprises a battery main body and the battery cover plate assembly, the battery cover plate assembly is arranged at the top end of the battery main body, and the battery pack comprises a plurality of batteries.

Specifically, as shown in fig. 1 to 4, the battery cover plate assembly includes a cover plate base 1, an electrode post 2 and a compact 3, and the cover plate base 1 is provided with a post mounting hole 11. Utmost point post mounting hole 11 is worn to establish by electrode utmost point post 2, and electrode utmost point post 2 includes utmost point post main part 21 and boss 22, and boss 22 sets up in the one end of utmost point post main part 21, and boss 22 supports and leans on in one side of apron base member 1, and the other end of utmost point post main part 21 is provided with recess 23, and the cell wall of recess 23 can outwards turn over the book. The pressing block 3 is arranged on the other side of the cover plate matrix 1, and the groove wall of the groove 23 is outwards turned over and pressed on the pressing block 3.

Through setting up briquetting 3 in one side of apron base member 1, and set up boss 22 in the one end of utmost point post main part 21, the other end of utmost point post main part 21 sets up recess 23, when the equipment of battery cover plate subassembly, pass apron base member 1 and briquetting 3 with electrode utmost point post 2 in proper order, make boss 22 support and lean on the one side of apron base member 1, carry out the spinning to the cell wall of recess 23, make it turn over outwards to roll over to press on briquetting 3, thereby with apron base member 1, briquetting 3 and the equipment of electrode utmost point post 2 are as an organic whole, electrode utmost point post 2 uses as the connecting piece, need not to weld or set up the riveting piece riveting in addition, assembly process is simple, the packaging efficiency of battery cover plate subassembly has been improved and manufacturing cost has been reduced.

Specifically, as shown in fig. 3, the cover plate base body 1 includes a smooth aluminum sheet 12, a first insulating member 13 and a second insulating member 14, the first insulating member 13 is disposed between the compact 3 and the smooth aluminum sheet 12, and is used for separating the smooth aluminum sheet 12 from the compact 3 to prevent electrical connection between the smooth aluminum sheet 12 and the electrode post 2; the second insulator 14 is disposed between the boss 22 of the electrode post 2 and the smooth aluminum sheet 12, and is used for separating the boss 22 from the smooth aluminum sheet 12 to prevent electrical connection between the smooth aluminum sheet 12 and the electrode post 2. The polished aluminum sheet 12 is made of aluminum metal to have light weight and high strength. The first insulating member 13 and the second insulating member 14 are made of plastic material.

Optionally, as shown in fig. 3, a limiting groove 131 is formed in the first insulating member 13, the press block 3 is limited in the limiting groove 131, and after the battery cover plate assembly is assembled, the press block 3 is pressed into the limiting groove 131, so that the installation is more stable.

Referring to fig. 1 and 3, the electrode post 2 includes a positive electrode post and a negative electrode post having the same structure, two post mounting holes 11 are provided in the cover plate base 1, and the positive electrode post and the negative electrode post are respectively disposed in the two post mounting holes 11. Generally, the positive electrode post and the negative electrode post are disposed at two ends of the cover plate base body 1, and the first insulating member 13 is disposed at two ends of the cover plate base body and is respectively disposed at the positive electrode post and the negative electrode post. An explosion-proof hole 121 is formed in the middle of the cap substrate 1, an explosion-proof plate 122 is mounted on the explosion-proof hole 121, the size of the second insulating member 14 is substantially the same as that of the smooth aluminum plate 12, and a grid 141 is formed at a position facing the explosion-proof hole 121 so that the inside of the battery is communicated with the explosion-proof hole 121. The explosion-proof hole 121 and the explosion-proof plate 122 are conventional in the prior art, and the detailed structure and arrangement thereof are not described in detail herein.

It should be noted that the specific structural form of the battery cover plate assembly is not limited to the structure shown in the drawings of the present embodiment. The battery cover plate assembly shown in fig. 1 has the positive electrode terminal and the negative electrode terminal disposed on the same side of the battery, and in other embodiments, there may be cases where the positive electrode terminal and the negative electrode terminal are disposed on different sides of the battery, and for such cases, the structure of the electrode terminal 2 and the connection manner with the cover plate base body 1 proposed in the present embodiment are also applicable.

Further, with reference to fig. 3 and 6, a through hole 31 is formed in the pressing block 3, the electrode post 2 passes through the through hole 31, a hole wall of one end, through which the electrode post 2 passes, of the through hole 31 is an inclined surface 311, and a groove wall of the groove 23 is turned outwards and pressed on the inclined surface 311. The inclined surface 311 is provided at an end of the through hole 31 away from the base 1, so that the through hole 31 has a bell-mouth shape, and the inclined surface 311 can be formed by chamfering the hole wall of the through hole 31. The provision of the inclined surface 311 makes it easier to fold the wall of the recess 23 outwardly.

Preferably, as shown in fig. 4, a plurality of anti-slip grooves 24 are arranged on the outer circumferential surface of the groove wall of the groove 23 at intervals, and the arrangement of the anti-slip grooves 24 increases the friction coefficient, which is beneficial to increasing the friction force between the outer circumferential surface of the groove wall of the groove 23 and the compact 3, thereby improving the torsional strength of the electrode post 2. In this embodiment, the anti-slip groove 24 extends along the axial direction of the electrode post 2, and after the groove wall of the groove 23 is turned outwards, the extending direction of the anti-slip groove 24 is substantially perpendicular to the twisting direction of the electrode post 2, which is more beneficial to preventing the twisting of the electrode post 2. Specifically, the depth of the anti-slip groove 24 is less than or equal to 0.2mm. For example, the depth of the anti-slip groove 24 may be set to 0.05mm, 0.1mm, 0.15mm, or 0.2mm. Of course, the depth of the anti-slip groove 24 is not limited to the above value, and may be set to other suitable values according to the actual situation.

Further, as shown in fig. 5, a weight reduction groove 25 is formed in the center of the end of the electrode post 2 where the boss 22 is formed, so that the middle of the electrode post 2 is hollow, and a weight reduction effect can be achieved.

Further, referring back to fig. 2 and fig. 3, the battery cover plate assembly further includes a sealing member 4, and the sealing member 4 is sandwiched between the electrode post 2 and the cover plate base 1. The sealing member 4 is specifically a seal ring.

Assembling the battery cover plate component:

s1: sleeving the sealing ring on the electrode pole 2 to enable the sealing ring to be attached to the boss 22;

s2: placing the electrode post 2 sleeved with the sealing ring and the second insulating piece 14 below the polished aluminum sheet 12, and sequentially enabling the electrode post 2 to penetrate through the second insulating piece 14 and the post mounting hole 11 on the polished aluminum sheet 12;

s3: placing the first insulating part 13 and the pressing block 3 above the smooth aluminum sheet 12 and sleeving the electrode pole 2;

s4: and spinning the groove wall of the groove 23 on the electrode pole 2, turning the groove wall of the groove 23 outwards to press the pressing block 3, and fixing each part.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Battery cover plate subassembly, its characterized in that includes:

the terminal post mounting structure comprises a cover plate base body (1), wherein a terminal post mounting hole (11) is formed in the cover plate base body (1);

the electrode post (2) penetrates through the post mounting hole (11), the electrode post (2) comprises a post main body (21) and a boss (22), the boss (22) is arranged at one end of the post main body (21), the boss (22) abuts against one side of the cover plate base body (1), a groove (23) is formed in the other end of the post main body (21), and the groove wall of the groove (23) can be turned outwards;

the pressing block (3) is arranged on the other side of the cover plate base body (1), and the groove wall of the groove (23) is outwards folded and pressed on the pressing block (3).

2. The battery cover plate assembly according to claim 1, wherein a through hole (31) is formed in the pressing block (3), the electrode post (2) penetrates through the through hole (31), a hole wall of one end, through which the electrode post (2) penetrates, of the through hole (31) is provided with an inclined surface (311), and the groove wall of the groove (23) is folded outwards and pressed against the inclined surface (311).

3. The battery cover plate assembly according to claim 1, wherein a plurality of anti-slip grooves (24) are provided at intervals on the outer circumferential surface of the groove wall of the groove (23).

4. A battery cover plate assembly according to claim 3, wherein the anti-slip groove (24) extends in the axial direction of the electrode post (2).

5. The battery cover plate assembly according to claim 3, wherein the depth of the anti-slip groove (24) is less than or equal to 0.2mm.

6. The battery cover plate assembly according to claim 1, wherein the end of the electrode post (2) provided with the boss (22) is centrally provided with a weight-reducing groove (25).

7. The battery cover plate assembly of claim 1, further comprising:

and the sealing element (4) is clamped between the electrode pole (2) and the cover plate base body (1).

8. The battery cover plate assembly according to any one of claims 1 to 7, wherein the cover plate base body (1) comprises a plain aluminum sheet (12), a first insulator (13) and a second insulator (14), the first insulator (13) being disposed between the compact (3) and the plain aluminum sheet (12), the second insulator (14) being disposed between the boss (22) of the electrode post (2) and the plain aluminum sheet (12).

9. The battery cover plate assembly according to claim 8, wherein the first insulating member (13) and the second insulating member (14) are made of plastic.

10. A battery comprising a battery body, further comprising a battery cover plate assembly of any of claims 1-9 disposed at a top end of the battery body.

11. A battery pack comprising a plurality of batteries as claimed in claim 10.