CN209896164U - Power battery top cap and secondary battery - Google Patents
Power battery top cap and secondary battery Download PDFInfo
- Publication number
- CN209896164U CN209896164U CN201920354662.7U CN201920354662U CN209896164U CN 209896164 U CN209896164 U CN 209896164U CN 201920354662 U CN201920354662 U CN 201920354662U CN 209896164 U CN209896164 U CN 209896164U
- Authority
- CN
- China
- Prior art keywords
- top cover
- riveting block
- pole
- hole
- power battery
- 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.)
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Links
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000005267 amalgamation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
A power battery top cover comprises a top cover plate, a first riveting block, a second riveting block, a negative pole column assembly, an explosion-proof valve structure and a liquid injection hole structure, wherein the explosion-proof valve structure and the liquid injection hole structure are arranged on the top cover plate; the top cover plate also comprises a negative pole mounting hole, a positioning hole, a groove structure and a positive pole protruding downwards; the first riveting block is provided with a boss which is mutually matched with the groove structure, and the positive pole column is connected with the positive pole in the battery cell; the second riveting block comprises a pole through hole and an anti-torsion fixing column groove, the pole through hole is located in the center, the negative pole sequentially penetrates through the lower plastic part, the negative pole mounting hole, the insulating part and the second riveting block, and the anti-torsion fixing column penetrates through the insulating part and the positioning hole in a limiting and fixing mode. The design reduces the number of the top cover components and the cost; the problems that the riveting block is easy to tilt and the riveting is not flat can be avoided, and the twisting resistance can be enhanced.
Description
Technical Field
The utility model relates to a power battery energy storage technical field, very much relate to a power battery top cap and secondary battery.
Background
In the prior art, a power battery top cover pole post is fixedly connected through an upper plastic part, a lower plastic part and a welding riveting block, and in order to better fix the pole post and prevent the pole post from rotating when being subjected to external force, ceramic anti-torsion fixing columns are usually arranged on the positive riveting block and the negative riveting block; on the other hand, the anti-twisting ceramic column is fragile and easy to break during production and manufacturing, and the cost is high.
Disclosure of Invention
In order to solve the problem, the utility model provides a power battery top cap through the connected mode of optimizing the positive post, can reduce top cap piece subassembly quantity, and reduce cost through the connection structure who improves the negative pole post and the structure of second riveting piece, can further strengthen preventing turning round the location effect, improves structural strength.
The utility model provides a power battery top cover, which comprises a top cover plate, a first riveting block, a second riveting block, a negative pole column assembly, an explosion-proof valve structure and a liquid injection hole structure, wherein the explosion-proof valve structure and the liquid injection hole structure are arranged on the top cover plate; the top cover plate also comprises a negative pole mounting hole, a positioning hole, a groove structure and a positive pole protruding downwards; the first riveting block is provided with a boss which is matched with the groove structure in an interference mode, and the positive pole is connected with the positive pole in the battery cell to achieve electric connection of the positive pole; the second riveting block comprises a pole through hole and an anti-torsion fixing column groove which are located in the center, the negative pole sequentially penetrates through the lower plastic part, the negative pole mounting hole, the insulating part and the second riveting block, the anti-torsion fixing column is embedded in the anti-torsion fixing column groove and then sequentially penetrates through the insulating part and the positioning hole for limiting and fixing.
As a further improvement, the positive pole and the top cover plate structure as an organic whole also can be that the welding amalgamation forms.
As a further improvement of the utility model, the anti-twist fixing columns have at least two, and can be mutually symmetrically distributed and also can be asymmetrically distributed.
As a further improvement, all be equipped with utmost point post through-hole on plastic part, insulating part and the second riveting piece down, still be equipped with positioning hole on the insulating part.
As a further improvement of the utility model, the positioning hole and the positioning through hole are respectively corresponding to the torsion-proof fixing column.
As a further improvement of the present invention, the second riveting block and the pole are fixed by welding.
As a further improvement of the present invention, the second riveting block and the first riveting block may be square, rectangular, triangular, circular or other special-shaped structures.
As a further improvement of the utility model, the second riveting block is a copper-aluminum composite board, the middle part is copper, and both sides are aluminum products.
As the further improvement of the utility model, turn round the preferred ceramic fixed column of fixed column.
The utility model provides a secondary battery, includes the casing, hold naked electric core, the seal installation in the casing in the top cap of casing opening top, the top cap is above-mentioned the top cap.
Advantageous effects
1. The positive pole column extending downwards is connected with the positive pole inside the battery core, and the first riveting block is fixedly connected with the groove structure, so that the positive pole of the battery is formed, the use of parts such as upper and lower plastic parts, a sealing ring, an anti-twisting fixing column and the like is reduced, the positive pole structure is optimized, the number of top cover components is reduced, and the cost is reduced;
2. utmost point post through-hole is seted up to second riveting piece central point and put, and use utmost point post through-hole sets up the anti-twist fixed column of symmetry as the center, avoids the easy perk of riveting piece, and the problem of riveting unevenness can also strengthen anti-twist.
Drawings
FIG. 1 is a cross-sectional view of the top cover of the power battery
FIG. 2 is an exploded view of the top cover of the power battery
FIG. 3 is the schematic diagram of the front and back side structure of the top cover of the power battery
FIG. 4 is a schematic view of a first rivet block structure
1. Top cover sheet
2. First riveting block
3. Second riveting block
4. Negative pole post subassembly
5. Explosion-proof valve structure
6. Liquid injection hole structure
7. Anti-twist fixing column
11. Cathode pole mounting hole
12. Locating hole
13. Groove structure
14. Positive pole
21. Boss
31. Second rivet block through hole
41. Negative pole
42. Sealing ring
43. Lower plastic part
44. Insulating member
441. And positioning the through hole.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious 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 shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," "upper," "lower," "left," "right," and the like in the description and claims of the present invention and the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The top cover of the power battery shown in fig. 1-4 comprises a top cover plate 1, a first riveting block 2, a second riveting block 3, a negative pole column assembly 4, and an explosion-proof valve structure 5 and a liquid injection hole structure 6 which are arranged on the top cover plate 1, wherein the negative pole column assembly 4 comprises a negative pole column 41, a sealing ring 42 arranged at the bottom of the negative pole column, a lower plastic part 43 arranged below the top cover plate, and an insulating part 44 arranged above the top cover plate; the top cover plate 1 further comprises a negative pole mounting hole 11, a positioning hole 12, a groove structure 13 and a positive pole 14 protruding downwards; the first riveting block 2 is provided with a boss 21 which is mutually matched with the groove structure 13, and the positive pole 14 is connected with the positive pole in the battery cell to realize the electric connection of the positive pole; the second riveting block 3 comprises a pole through hole and a 31 anti-torsion fixing column groove which are located in the center, the negative pole 41 sequentially penetrates through the lower plastic part 43, the negative pole mounting hole 11, the insulating part 44 and the second riveting block 3, the anti-torsion fixing column 7 is embedded in the anti-torsion fixing column groove and sequentially penetrates through the insulating part 44 and the positioning hole 12 for limiting and fixing.
Further, the positive pole 14 and the top cover plate 1 are of an integrated structure, or may be formed by welding and splicing, for this embodiment, the positive pole 14 and the top cover plate 1 are of an integrated structure;
furthermore, at least two of the anti-twist fixing posts 7 may be symmetrically distributed or asymmetrically distributed, and in this embodiment, the two anti-twist fixing posts are symmetrically distributed;
further, all be equipped with utmost point post through-hole on plastic part 43, insulating part 44 and the second riveting piece 3 down, still be equipped with positioning hole 441 on the insulating part 44.
Furthermore, the positioning hole 12 and the positioning through hole 441 correspond to the anti-twist fixing column grooves respectively.
Further, the second riveting block 3 and the negative pole 41 are fixed by welding;
further, the first riveting block 1 and the second riveting block 3 may be square, rectangular, triangular, circular or other special-shaped structures, and preferably have rectangular structures in this embodiment;
further, the second riveting block 3 is a copper-aluminum composite plate, the middle part of the second riveting block is copper, and the two sides of the second riveting block are aluminum materials.
Further, the torsion fixing column 7 is preferably a ceramic fixing column;
further, the torsion-proof fixing column 7 and the torsion-proof fixing column groove are fixed through welding, and an ultrasonic welding process is preferred in the embodiment.
The above-mentioned embodiment is only one of the embodiments within the spirit of the present invention, and many variations can be made, for example, the anti-twisting fixing posts may be three in a triangular symmetrical structure, or four in four corners, and of course, other forms are possible, and all equivalent substitutions or variations within the spirit of the present invention are included in the scope of the claims of the present invention.
Claims (9)
1. A power battery top cover comprises a top cover plate, a first riveting block, a second riveting block, an anti-torsion fixing column, a negative column assembly, an explosion-proof valve structure and a liquid injection hole structure, wherein the explosion-proof valve structure and the liquid injection hole structure are arranged on the top cover plate; the top cover plate is characterized by further comprising a negative pole mounting hole, a positioning hole, a groove structure and a positive pole protruding downwards; the first riveting block is provided with a boss which is matched with the groove structure in an interference mode, and the positive pole is connected with the positive pole in the battery cell to achieve electric connection of the positive pole; the second riveting block comprises a pole through hole and an anti-torsion fixing column groove, the pole through hole is located in the center, the negative pole sequentially penetrates through the lower plastic part, the negative pole mounting hole, the insulating part and the second riveting block, the anti-torsion fixing column is embedded in the anti-torsion fixing column groove, and then sequentially penetrates through the insulating part and the positioning hole for limiting and fixing.
2. The power battery top cap of claim 1, wherein the positive post and the top cap piece are of an integral structure.
3. The top cover of the power battery as claimed in claim 1, wherein the torsion-proof fixing posts are at least two and are symmetrically distributed with each other.
4. The top cover of the power battery as claimed in claim 1, wherein the lower plastic member, the insulating member and the second riveting block are all provided with pole through holes, and the insulating member is further provided with positioning through holes.
5. The top cover of the power battery as claimed in claim 1, wherein the positioning holes and the positioning through holes correspond to the anti-twist fixing post grooves respectively.
6. The power battery top cover according to claim 1, wherein the second riveting block and the pole are fixed by welding.
7. The top cover of the power battery as claimed in claim 1, wherein the second riveting block and the first riveting block can be square, rectangular, triangular, circular or other special-shaped structures.
8. The top cap of claim 1, wherein the second riveting block is a copper aluminum composite plate, the middle portion is copper, and the two sides are aluminum.
9. A secondary battery comprising a casing, a bare cell contained within the casing, and a top cover sealingly mounted over an opening in the casing, wherein the top cover comprises any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920354662.7U CN209896164U (en) | 2019-03-20 | 2019-03-20 | Power battery top cap and secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920354662.7U CN209896164U (en) | 2019-03-20 | 2019-03-20 | Power battery top cap and secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209896164U true CN209896164U (en) | 2020-01-03 |
Family
ID=69017602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920354662.7U Active CN209896164U (en) | 2019-03-20 | 2019-03-20 | Power battery top cap and secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209896164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889695A (en) * | 2021-08-31 | 2022-01-04 | 蜂巢能源科技有限公司 | Cover plate structure and assembly process thereof |
| WO2023142306A1 (en) * | 2022-01-27 | 2023-08-03 | 深圳市科达利实业股份有限公司 | Battery top cover, battery module and battery pack |
-
2019
- 2019-03-20 CN CN201920354662.7U patent/CN209896164U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889695A (en) * | 2021-08-31 | 2022-01-04 | 蜂巢能源科技有限公司 | Cover plate structure and assembly process thereof |
| WO2023142306A1 (en) * | 2022-01-27 | 2023-08-03 | 深圳市科达利实业股份有限公司 | Battery top cover, battery module and battery pack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518107 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |
|
| CP03 | Change of name, title or address |