CN220209233U - Copper-aluminum composite negative electrode column suitable for PPS encapsulation and lithium battery cover plate - Google Patents
Copper-aluminum composite negative electrode column suitable for PPS encapsulation and lithium battery cover plate Download PDFInfo
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- CN220209233U CN220209233U CN202223503693.5U CN202223503693U CN220209233U CN 220209233 U CN220209233 U CN 220209233U CN 202223503693 U CN202223503693 U CN 202223503693U CN 220209233 U CN220209233 U CN 220209233U
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- Prior art keywords
- pole
- copper
- encapsulation
- pps
- aluminum composite
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- 238000005538 encapsulation Methods 0.000 title claims abstract description 23
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 title claims abstract description 20
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a copper-aluminum composite negative electrode column and a lithium battery cover plate suitable for PPS encapsulation, which comprise the following components: the pole comprises a pole upper part and a pole lower part which are connected with each other, wherein a knurling clamping groove is formed in the periphery of the pole upper part, a plurality of positioning blocks protruding upwards are arranged on the top surface of the pole lower part, and a plurality of grooves for the positioning blocks to be inserted are formed in the bottom surface of the pole upper part. Through the mode, the copper-aluminum composite negative pole column and the lithium battery cover plate suitable for PPS encapsulation can effectively prevent the negative pole column from rotating or loosening relative to the cover plate through the knurling clamping groove arranged at the encapsulation position of the upper part of the pole column; the cathode pole is divided into an upper part and a lower part, aluminum returns to aluminum, copper returns to copper, and after the shape is punched, the cathode pole is quickly assembled and then welded through matching of the positioning blocks and the grooves, so that the welding efficiency can be effectively improved, and the material cost is greatly reduced.
Description
Technical Field
The utility model relates to the field of lithium battery cover plates, in particular to a copper-aluminum composite negative electrode column suitable for PPS encapsulation and a lithium battery cover plate.
Background
The lithium battery has the advantages of high voltage, long service life, high energy density, portability and the like, the application field of the lithium battery is continuously expanded, but the safety performance of the lithium battery is poorer than that of other secondary batteries, when the power lithium battery is overcharged, materials such as electrolyte and the like in the lithium battery can be cracked to generate gas, so that the battery shell is swelled and cracked, oxygen is allowed to enter and react with lithium ions accumulated on the surface of the negative electrode, and explosion occurs.
The existing lithium battery cover plate is shown in an authority bulletin number CN 217426923U, the patent name is that a positive and negative pole post is improved, the cost is reduced, the joint of the negative pole post and the cover plate is fixed through PPS encapsulation, but when the negative pole post is subjected to certain external force, the negative pole post is easy to loosen and can rotate relative to the cover plate, so that the follow-up phenomenon occurs, the structure is unstable, the whole material of the negative pole post is a copper-aluminum composite material, the copper-aluminum composite material is very expensive, ten tens of thousands of tons are needed, the cost of enterprises cannot be effectively reduced, and therefore, the negative pole post needs to be improved.
Disclosure of Invention
The utility model mainly solves the technical problem of providing a copper-aluminum composite negative pole column and a lithium battery cover plate which are suitable for PPS encapsulation, so as to solve the problems in the background technology.
In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a copper aluminium composite negative pole post suitable for PPS rubber coating, include: the pole comprises a pole upper part and a pole lower part which are connected with each other, wherein a knurling clamping groove is formed in the periphery of the pole upper part, a plurality of positioning blocks protruding upwards are arranged on the top surface of the pole lower part, and a plurality of grooves for the positioning blocks to be inserted are formed in the bottom surface of the pole upper part.
In a preferred embodiment of the present utility model, the pole upper member is made of aluminum.
In a preferred embodiment of the present utility model, the lower pole member is made of copper.
In a preferred embodiment of the utility model, the upper pole part and the lower pole part are connected by laser welding or ultrasonic welding.
In a preferred embodiment of the utility model, the pole upper member may or may not have a pole center detent.
In order to solve the technical problems, the utility model also provides a lithium battery cover plate, which comprises the copper-aluminum composite negative electrode post suitable for PPS encapsulation.
The beneficial effects of the utility model are as follows: according to the copper-aluminum composite negative pole column and the lithium battery cover plate suitable for PPS encapsulation, the knurling clamping groove is formed in the encapsulation position of the upper part of the pole column, so that the rotation or loosening of the negative pole column relative to the cover plate can be effectively prevented; the cathode pole is divided into an upper part and a lower part, aluminum returns to aluminum, copper returns to copper, and after the shape is punched, the cathode pole is quickly assembled and then welded through matching of the positioning blocks and the grooves, so that the welding efficiency can be effectively improved, and the material cost is greatly reduced.
Drawings
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic view of a copper-aluminum composite negative electrode column suitable for PPS encapsulation according to a preferred embodiment of the present utility model;
fig. 2 is a schematic structural view of the pole upper member and the pole lower member.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, an embodiment of the present utility model includes:
a copper aluminum composite negative electrode column suitable for PPS encapsulation, comprising: the pole upper part 1 and the pole lower part 2 which are connected with each other, wherein the periphery of the pole upper part 1 is provided with a knurling clamping groove 3, and the knurling clamping groove 3 is arranged at the PPS encapsulation position of the pole upper part 1, so that the rotation or loosening of the cathode pole relative to the cover plate can be effectively prevented.
The top surface of the pole lower part 2 is provided with a plurality of positioning blocks 4 protruding upwards, and the bottom surface of the pole upper part 1 is provided with a plurality of grooves 5 for the positioning blocks 4 to be inserted. Through the cooperation quick installation of locating piece 4 and recess 5, can effectively promote welding efficiency.
The pole upper part 1 is connected with the pole lower part 2 through laser welding or ultrasonic welding, the pole upper part 1 is made of aluminum, the pole lower part 2 is made of copper, the cathode pole is divided into an upper part and a lower part, aluminum is returned to aluminum, copper is returned to copper, and the pole upper part and the pole lower part are connected through laser welding or ultrasonic welding, so that the material cost is greatly reduced.
The pole upper part 1 may or may not be provided with a pole center positioning groove 6, and in this embodiment, the pole upper part 1 is provided with a pole center positioning groove 6.
The lithium battery cover plate comprises the copper-aluminum composite negative electrode column suitable for PPS encapsulation.
In summary, according to the copper-aluminum composite negative pole column and the lithium battery cover plate suitable for PPS encapsulation, the knurling clamping groove is formed in the encapsulation position of the upper part of the negative pole column, so that the negative pole column can be effectively prevented from rotating or loosening relative to the cover plate; the cathode pole is divided into an upper part and a lower part, aluminum returns to aluminum, copper returns to copper, and after the shape is punched, the cathode pole is quickly assembled and then welded through matching of the positioning blocks and the grooves, so that the welding efficiency can be effectively improved, and the material cost is greatly reduced.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.
Claims (6)
1. A copper aluminum composite negative electrode column suitable for PPS encapsulation, comprising: the pole upper part and the pole lower part which are connected with each other are characterized in that a knurling clamping groove is formed in the periphery of the pole upper part, a plurality of positioning blocks protruding upwards are arranged on the top surface of the pole lower part, and a plurality of grooves for the positioning blocks to be inserted are formed in the bottom surface of the pole upper part.
2. The copper aluminum composite negative electrode post suitable for PPS encapsulation of claim 1, wherein the material of the post upper member is aluminum.
3. The copper-aluminum composite negative electrode post suitable for PPS encapsulation of claim 2, wherein the lower post member is copper.
4. The copper aluminum composite anode post suitable for PPS encapsulation according to claim 1, wherein the post upper member and the post lower member are connected by laser welding or ultrasonic welding.
5. The copper aluminum composite negative electrode post suitable for PPS encapsulation of claim 1, wherein the post upper member may or may not be provided with a post center detent.
6. A lithium battery cover plate comprising the copper-aluminum composite negative electrode post suitable for PPS encapsulation according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223503693.5U CN220209233U (en) | 2022-12-28 | 2022-12-28 | Copper-aluminum composite negative electrode column suitable for PPS encapsulation and lithium battery cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223503693.5U CN220209233U (en) | 2022-12-28 | 2022-12-28 | Copper-aluminum composite negative electrode column suitable for PPS encapsulation and lithium battery cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220209233U true CN220209233U (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223503693.5U Active CN220209233U (en) | 2022-12-28 | 2022-12-28 | Copper-aluminum composite negative electrode column suitable for PPS encapsulation and lithium battery cover plate |
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| Country | Link |
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| CN (1) | CN220209233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117937068A (en) * | 2024-03-21 | 2024-04-26 | 常州瑞德丰精密技术有限公司 | Composite pole block forming method |
-
2022
- 2022-12-28 CN CN202223503693.5U patent/CN220209233U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117937068A (en) * | 2024-03-21 | 2024-04-26 | 常州瑞德丰精密技术有限公司 | Composite pole block forming method |
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