CN213989128U - Novel utmost point post subassembly, top cap structure and power battery - Google Patents
Novel utmost point post subassembly, top cap structure and power battery Download PDFInfo
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- CN213989128U CN213989128U CN202022974315.XU CN202022974315U CN213989128U CN 213989128 U CN213989128 U CN 213989128U CN 202022974315 U CN202022974315 U CN 202022974315U CN 213989128 U CN213989128 U CN 213989128U
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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 discloses a novel utmost point post subassembly, top cap structure and power battery, wherein novel utmost point post subassembly includes utmost point post terminal and rivet, utmost point post terminal's below is equipped with insulating closing plate, insulating closing plate's below is equipped with the flexible coupling piece, it is equipped with the riveting hole that runs through to correspond on utmost point post terminal, insulating closing plate and the flexible coupling piece, the rivet penetrates behind the riveting hole with utmost point post terminal, insulating closing plate and flexible coupling piece riveting together. Adopt the utility model discloses behind the structure, positive negative pole terminal all can be directly cold-heading shaping, does not need the machine tooling, and the negative pole need not friction welding or composite sheet, the cost of manufacture that significantly reduces, and soft connection piece and utmost point post terminal riveting are integrative, save the laser welding process of soft connection piece and utmost point post in the assembling process, can improve production efficiency, and the welding is exempted from in the top cap assembly, greatly reduced cost.
Description
Technical Field
The utility model relates to a lithium cell technical field, concretely relates to novel utmost point post subassembly, top cap structure and power battery.
Background
The power battery generally comprises an electric core, a metal shell used for accommodating the electric core and a battery top cover, wherein the top of the electric core is provided with a positive electrode lug and a negative electrode lug, and the battery top cover is provided with a positive electrode column, a negative electrode column, a liquid injection hole and an explosion-proof valve. During assembly, the positive tab and the negative tab are respectively connected with the positive pole column and the negative pole column in a welding mode, then the battery core is placed in the shell, the battery top cover and the shell are welded and sealed to form a semi-finished battery, and the power battery is obtained through a series of procedures such as liquid injection, formation and capacity. Power battery mainly adopts the structure of moulding plastics or riveting top cap in the trade at present, and manufacturing process is complicated, and especially top cap negative pole post needs to carry out copper aluminium friction welding earlier or compound, then machine tooling, and at last mould plastics or riveting again, still need carry out the laser welding of soft connection piece and utmost point post, these all can make top cap cost rise, production efficiency reduce.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at: to the problem that the power battery top cap manufacturing process among the prior art is complicated, with high costs, efficient, provide a novel utmost point post subassembly, top cap structure and power battery, this utmost point post subassembly need not friction weld or composite sheet, and is with low costs, and soft connection piece and utmost point post riveting are integrative, save soft connection piece laser welding, can improve production efficiency, reduce cost.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a novel utmost point post subassembly, includes utmost point post terminal and rivet, utmost point post terminal's below is equipped with insulating closing plate, insulating closing plate's below is equipped with the flexible connection piece, the riveting hole that runs through is equipped with to utmost point post terminal, insulating closing plate and flexible connection piece on the correspondence, the rivet penetrates behind the riveting hole with utmost point post terminal, insulating closing plate and flexible connection piece riveting together.
The utility model discloses a set up utmost point post terminal and rivet, the below of utmost point post terminal is equipped with insulating closing plate, the below of insulating closing plate is equipped with the flexible connection piece, the riveting hole that runs through is correspondingly equipped with on utmost point post terminal, insulating closing plate and the flexible connection piece, the rivet passes through after the riveting hole with utmost point post terminal, insulating closing plate and flexible connection piece riveting together; positive negative pole terminal all can directly be cold-headed and shaped, does not need machine tooling, and the negative pole need not friction weld or composite sheet, the cost of manufacture that significantly reduces, and soft connection piece and utmost point post terminal riveting are integrative, save the laser welding process of soft connection piece and utmost point post in the assembling process, can improve production efficiency, and the welding is exempted from in the top cap assembly, greatly reduced cost.
The utility model provides a top cover structure, includes first utmost point post subassembly, second utmost point post subassembly and apron, first utmost point post subassembly and second utmost point post subassembly be above novel utmost point post subassembly, be equipped with first apron hole and second apron hole on the apron, first utmost point post subassembly is located in the first apron hole, second utmost point post subassembly is located in the second apron hole. The top cover structure adopts the novel pole assembly, so that the steps of the top cover manufacturing process can be reduced, the production efficiency is improved, and the cost is greatly reduced.
As the utility model discloses a preferred scheme, top cap structure still includes insulating part down, be equipped with insulating part hole under first insulating part hole and the second on the insulating part down, first utmost point post subassembly is located in the first insulating part hole down, the second utmost point post subassembly is located in the second insulating part hole down. Through setting up insulating part down, mainly used carries out insulation protection to the apron downside to and be used as the installing support of top cap on battery case.
As the preferred scheme of the utility model, the top cap structure still includes resistance component and last insulating part, resistance component set up in first utmost point post subassembly with between the apron, go up the insulating part set up in second utmost point post subassembly with between the apron. The resistance component and the upper insulating part are arranged, so that the resistance component is mainly used for mounting the pole terminal on the cover plate and isolating the pole terminal from the cover plate.
As the utility model discloses a preferred scheme, resistance component is nonrust steel sheet or electrically conductive plastic, and the resistance value is at 0.01m omega-20000 omega, go up the insulating part and be insulating plastic, it moulds plastics for PPS to go up the insulating part and forms.
As the utility model discloses a preferred scheme, still be equipped with explosion-proof valve and annotate the liquid hole on the apron, be equipped with the explosion-proof through-hole corresponding with explosion-proof valve on the insulating part down to and annotate the liquid through-hole corresponding with annotating the liquid hole. The explosion-proof through hole is used for gas to see through insulating part down to guarantee the normal of top cap explosion-proof valve and open, and annotate the liquid through hole and be used for annotating liquid hole from the top cap and pour into electrolyte into in the battery.
A power battery comprises the top cover structure.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses a set up utmost point post terminal and rivet, the below of utmost point post terminal is equipped with insulating closing plate, the below of insulating closing plate is equipped with the flexible connection piece, the riveting hole that runs through is correspondingly equipped with on utmost point post terminal, insulating closing plate and the flexible connection piece, the rivet passes through after the riveting hole with utmost point post terminal, insulating closing plate and flexible connection piece riveting together; positive negative pole terminal all can directly be cold-headed and shaped, does not need machine tooling, and the negative pole need not friction weld or composite sheet, the cost of manufacture that significantly reduces, and soft connection piece and utmost point post terminal riveting are integrative, save the laser welding process of soft connection piece and utmost point post in the assembling process, can improve production efficiency, and the welding is exempted from in the top cap assembly, greatly reduced cost.
Drawings
Fig. 1 is a schematic view of the novel pole assembly of the present invention.
Fig. 2 is an exploded view of the top cover structure of the present invention.
Fig. 3 is a transverse sectional view of the top cap structure pole position of the present invention.
The labels in the figure are: 1-pole terminal, 2-rivet, 3-insulating sealing plate, 4-soft connecting sheet, 5-first pole assembly, 6-second pole assembly, 7-cover plate, 71-first cover plate hole, 72-second cover plate hole, 73-explosion-proof valve, 74-liquid injection hole, 8-lower insulator, 81-first lower insulator hole, 82-second lower insulator hole, 83-explosion-proof through hole, 84-liquid injection through hole, 91-resistance member, 92-upper insulator.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
The present embodiment provides a novel pole assembly;
as shown in fig. 1, the novel pole assembly in this embodiment includes a pole terminal 1 and a rivet 2, an insulating sealing plate 3 is disposed below the pole terminal 1, a flexible connecting sheet 4 is disposed below the insulating sealing plate 3, through riveting holes are correspondingly disposed on the pole terminal 1, the insulating sealing plate 3 and the flexible connecting sheet 4, and the rivet 2 penetrates through the riveting holes and then rivets the pole terminal 1, the insulating sealing plate 3 and the flexible connecting sheet 4 together.
The utility model discloses a set up utmost point post terminal and rivet, the below of utmost point post terminal is equipped with insulating closing plate, the below of insulating closing plate is equipped with the flexible connection piece, the riveting hole that runs through is correspondingly equipped with on utmost point post terminal, insulating closing plate and the flexible connection piece, the rivet passes through after the riveting hole with utmost point post terminal, insulating closing plate and flexible connection piece riveting together; positive negative pole terminal all can directly be cold-headed and shaped, does not need machine tooling, and the negative pole need not friction weld or composite sheet, the cost of manufacture that significantly reduces, and soft connection piece and utmost point post terminal riveting are integrative, save the laser welding process of soft connection piece and utmost point post in the assembling process, can improve production efficiency, and the welding is exempted from in the top cap assembly, greatly reduced cost.
In this embodiment, the rivet 2 includes a nail seat and a nail post, and the diameter of the nail seat is greater than the diameter of the nail post, when in use, the nail seat of the rivet 2 contacts with the flexible connecting sheet 4, and the nail post penetrates through the riveting holes on the post terminal 1, the insulating sealing plate 3 and the flexible connecting sheet 4, the nail seat partially sinks into the flexible connecting sheet 4 after riveting, and the head of the nail post sinks into the post terminal 1. The rivet 2 for the battery cathode is made of a copper material, the surface of the rivet is plated with nickel, and the rivet 2 for the battery anode is made of an aluminum material. In addition, the number of the rivets (2) can be set to be one or more than one and can be uniformly distributed, so that the strength of the pole column can be ensured, and the stress can be more uniform.
In this embodiment, the lower side surface of the post terminal 1 has a boss, the boss is cylindrical, the boss protrudes toward the direction opposite to the insulating sealing plate 3, and the riveting hole on the post terminal 1 is a through arrangement, that is, the riveting hole extends downward from the upper end of the post terminal and penetrates through the boss.
In this embodiment, the top of utmost point post terminal 1 is equipped with the counter bore, the counter bore with the coaxial setting in riveting hole, the counter bore is arranged in the counter bore of utmost point post terminal is gone into to the card after the nail post head becomes thick when riveting, makes the nail post head be less than utmost point post terminal top surface in the utmost point post terminal is gone into to the nail post head on the one hand, and on the other hand nail post head becomes thick part and nail seat and forms spacing and compress tightly at the rivet axial to utmost point post terminal, insulating closing plate and flexible connection piece jointly to avoid the rivet pine to take off.
In this embodiment, the flexible connecting sheet 4 has two bending portions and a tab welding portion, a single-layer thickness of the flexible connecting sheet 4 is 0.1-0.5mm, preferably 0.15-0.35mm, and the flexible connecting sheet 4 may be a single-layer structure or a multi-layer structure. The soft connecting sheet 4 for the battery cathode is made of copper material, the surface of the soft connecting sheet can be selectively plated with nickel, and the soft connecting sheet 4 for the battery anode is made of aluminum material.
In this embodiment, the insulating sealing plate 3 is made of insulating plastic, but has a certain compression amount, and is made of PP material fused with fluororubber. Of course, the sealing insulating plate 3 may also be made of common insulating plastic, but a fluororubber ring seal is added between the pole terminal and the soft connecting sheet.
Example 2
As shown in fig. 2 and fig. 3, the present embodiment provides a top cover structure, which includes a first pole assembly 5, a second pole assembly 6, and a cover plate 7, where the first pole assembly 5 and the second pole assembly 6 are the novel pole assemblies described in embodiment 1, a first cover plate hole 71 and a second cover plate hole 72 are provided on the cover plate 7, the first pole assembly 5 is located in the first cover plate hole 71, and the second pole assembly 6 is located in the second cover plate hole 72. The top cover structure adopts the novel pole assembly, so that the steps of the top cover manufacturing process can be reduced, the production efficiency is improved, and the cost is greatly reduced.
In this embodiment, the top cover structure further includes a lower insulating member 8, a first lower insulating member hole 81 and a second lower insulating member hole 82 are formed in the lower insulating member 8, the first pole assembly 5 is located in the first lower insulating member hole 81, and the second pole assembly 6 is located in the second lower insulating member hole 82. Through setting up insulating part down, mainly used carries out insulation protection to the apron downside to and be used as the installing support of top cap on battery case.
In this embodiment, the top cover structure further includes a resistor 91 and an upper insulator 92, the resistor 91 is disposed between the first pole assembly 5 and the cover plate 7, and the upper insulator 92 is disposed between the second pole assembly 6 and the cover plate 7. The resistance component and the upper insulating part are arranged, so that the resistance component is mainly used for mounting the pole terminal on the cover plate and isolating the pole terminal from the cover plate. The resistance member 91 is a stainless steel sheet or conductive plastic with a resistance value of 0.01m Ω -20000 Ω, and the upper insulator 92 is an insulating plastic, generally formed by injection molding of PPS. The resistance component and the upper insulator are provided with through holes in the middle.
In this embodiment, the cover plate 7 is further provided with an explosion-proof valve 73 and a liquid injection hole 74, and the lower insulating member 8 is provided with an explosion-proof through hole 83 corresponding to the explosion-proof valve 73 and a liquid injection through hole 84 corresponding to the liquid injection hole 74. The explosion-proof through hole is used for gas to see through insulating part down to guarantee the normal of top cap explosion-proof valve and open, and annotate the liquid through hole and be used for annotating liquid hole from the top cap and pour into electrolyte into in the battery.
Specifically, the top cover assembly process: the rivet column of the rivet 2 in the first pole assembly 5 upwards penetrates through the flexible connecting sheet 4, the insulating sealing plate 3, the first lower insulating piece hole 81, the first cover plate hole 71, the resistance member 91 and the pole terminal 1; the head of the rivet 2 is riveted and pressed with the pole terminal 1 under the action of external force, and the rivet seat of the rivet 2 is riveted and pressed with the flexible connecting sheet 4. And the second pole assembly 6 is installed in line with the first pole assembly 5, which will not be described in detail herein.
Example 3
This embodiment provides a power battery, includes the top cap structure described in embodiment 2. This power battery has adopted above-mentioned top cap structure, can improve battery production efficiency, reduces battery manufacturing cost.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the principles of the present invention should be included within the scope of the present invention.
Claims (7)
1. The utility model provides a novel utmost point post subassembly, its characterized in that, includes utmost point post terminal and rivet, utmost point post terminal's below is equipped with insulating closing plate, insulating closing plate's below is equipped with the flexible connection piece, the riveting hole that runs through is equipped with to utmost point post terminal, insulating closing plate and flexible connection piece on correspondence, the rivet penetrates behind the riveting hole with utmost point post terminal, insulating closing plate and flexible connection piece riveting together.
2. The top cover structure is characterized by comprising a first pole post assembly, a second pole post assembly and a cover plate, wherein the first pole post assembly and the second pole post assembly are the novel pole post assembly in claim 1, a first cover plate hole and a second cover plate hole are formed in the cover plate, the first pole post assembly is located in the first cover plate hole, and the second pole post assembly is located in the second cover plate hole.
3. The roof structure of claim 2, further comprising a lower insulator having a first lower insulator aperture and a second lower insulator aperture, wherein the first pole assembly is positioned in the first lower insulator aperture and the second pole assembly is positioned in the second lower insulator aperture.
4. The roof structure of claim 3, further comprising an electrically resistive member disposed between the first pole assembly and the cover plate and an upper insulator disposed between the second pole assembly and the cover plate.
5. The top cover structure of claim 4, wherein the resistance member is a stainless steel sheet or a conductive plastic, the resistance value is 0.01m Ω -20000 Ω, the upper insulator is an insulating plastic, and the upper insulator is injection molded from PPS.
6. The top cover structure according to claim 5, wherein the cover plate is further provided with an explosion-proof valve and a liquid injection hole, and the lower insulating member is provided with an explosion-proof through hole corresponding to the explosion-proof valve and a liquid injection through hole corresponding to the liquid injection hole.
7. A power cell comprising the cap structure of any one of claims 2-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022974315.XU CN213989128U (en) | 2020-12-11 | 2020-12-11 | Novel utmost point post subassembly, top cap structure and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022974315.XU CN213989128U (en) | 2020-12-11 | 2020-12-11 | Novel utmost point post subassembly, top cap structure and power battery |
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| CN213989128U true CN213989128U (en) | 2021-08-17 |
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| CN202022974315.XU Active CN213989128U (en) | 2020-12-11 | 2020-12-11 | Novel utmost point post subassembly, top cap structure and power battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552086A (en) * | 2021-11-11 | 2022-05-27 | 东莞锂微电子科技有限公司 | Pole welding structure of square steel shell battery and battery |
| CN116111290A (en) * | 2023-03-01 | 2023-05-12 | 温州宏丰电工合金股份有限公司 | Copper-aluminum composite pole assembly, preparation method thereof and battery |
-
2020
- 2020-12-11 CN CN202022974315.XU patent/CN213989128U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552086A (en) * | 2021-11-11 | 2022-05-27 | 东莞锂微电子科技有限公司 | Pole welding structure of square steel shell battery and battery |
| CN116111290A (en) * | 2023-03-01 | 2023-05-12 | 温州宏丰电工合金股份有限公司 | Copper-aluminum composite pole assembly, preparation method thereof and battery |
| CN116111290B (en) * | 2023-03-01 | 2023-10-13 | 温州宏丰电工合金股份有限公司 | Copper-aluminum composite pole assembly, preparation method thereof and battery |
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Address after: 361000 201-1, complex building 5, No. 11, Butang Middle Road, torch high tech Zone (Tongxiang) industrial base, Xiamen, Fujian Patentee after: Xiamen Haichen Energy Storage Technology Co.,Ltd. Address before: 361000 201-1, complex building 5, No. 11, Butang Middle Road, torch high tech Zone (Tongxiang) industrial base, Xiamen, Fujian Patentee before: Xiamen Haichen New Energy Technology Co.,Ltd. |