CN220306474U - Top cover structure of secondary battery - Google Patents
Top cover structure of secondary battery Download PDFInfo
- Publication number
- CN220306474U CN220306474U CN202321351231.8U CN202321351231U CN220306474U CN 220306474 U CN220306474 U CN 220306474U CN 202321351231 U CN202321351231 U CN 202321351231U CN 220306474 U CN220306474 U CN 220306474U
- Authority
- CN
- China
- Prior art keywords
- top cover
- pole
- cover plate
- secondary battery
- plate
- 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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- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 abstract description 13
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010011469 Crying Diseases 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a secondary battery top cover structure, and relates to the technical field of batteries. The novel solar cell module comprises a top cover plate, wherein two through holes are formed in the top cover plate, a pole is arranged in each through hole, and an insulating plate is injection molded in a gap between the top cover plate and the pole. According to the secondary battery top cover structure provided by the utility model, the insulating plate is used for replacing the original upper and lower injection molding pieces under the injection molding condition, so that the total thickness of the top cover is reduced by half, the space is saved, the capacity of a battery core is further improved, the problem that the injection molding pieces under the positive and negative electrodes are mixed is avoided, parts are reduced, the assembly efficiency is improved by 50%, and the productivity is further improved.
Description
Technical Field
The utility model belongs to the technical field of batteries, and particularly relates to a top cover structure of a secondary battery.
Background
Secondary batteries, also called rechargeable batteries or secondary batteries, are batteries that can be used continuously by activating active materials by charging after the battery is discharged. With rapid development of electric automobiles, energy storage industry and electric tools, the demand for batteries is also increasing, and people put higher demands on battery capacity and safety.
The Chinese patent with the publication number of CN209766485U and the name of a secondary battery top cover structure realizes the fixation of the pole and the top cover plate through the welding connecting piece, has simple manufacturing process, greatly reduces the height of the top cover pole, improves the internal space of the battery to a certain extent, and solves the problem of lower utilization rate of the internal space of the battery. As shown in figure 1, when the product is assembled, a negative pole post is sleeved on a negative pole lower injection molding piece, a connecting piece and a top cover plate respectively, a sealing ring is sleeved on the reverse side of the product, and then the product is put into a mold to be injected with an upper injection molding piece; the positive pole column is synchronously carried out like the negative pole column, and finally a rupture disk is attached to the top cover plate. The injection molding piece under the positive and negative poles occupies a certain space in a larger thickness, the capacity of the battery cell is difficult to further improve in a limited space, and the injection molding piece under the positive and negative poles is easy to mix.
Disclosure of Invention
The utility model mainly aims to provide a secondary battery top cover structure so as to solve the problems existing in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a secondary cell top cap structure, includes the lamina tecti, be equipped with two through-holes on the lamina tecti, install the utmost point post in the through-hole, lamina tecti with it has the insulation board to mould plastics in the gap between the utmost point post.
Further, the insulation board includes ring portion, connecting portion and bottom plate portion, the top of connecting portion with ring portion connects, the bottom of connecting portion with bottom plate portion connects, ring portion is located in the counter bore on lamina tecti top and the cover is located the outside at utmost point post top, connecting portion are located in the through-hole and the cover is located the outside at utmost point post middle part, bottom plate portion is located the lamina tecti bottom with in the gap between the utmost point post bottom.
Further, the ring portion, the connecting portion and the bottom plate portion are integrally formed.
Furthermore, the insulating plate is made of carbon fiber.
Further, an elliptical hole is formed in the middle of the top end of the top cover plate, and a rupture disc is arranged in the elliptical hole.
Further, the two through holes are symmetrically arranged on two sides of the elliptical hole.
Further, the electrode post comprises a copper electrode post and an aluminum electrode post, and the copper electrode post and the aluminum electrode post are respectively arranged in the two through holes.
Compared with the prior art, the utility model has the following beneficial effects:
the insulating plate is injected in the gap between the top cover plate and the pole, and the insulating plate is used for replacing the original upper and lower injection molding pieces under the injection molding condition, so that the capacity of the battery cell is further improved, and the problem of mixing of the injection molding pieces under the positive and negative poles is avoided;
the number of parts is reduced, so that the assembly efficiency is improved, and the productivity is further improved;
the insulating board adopts carbon fiber material, can prevent deformation anticorrosion, has reduced the weeping risk.
Drawings
Fig. 1 is a schematic diagram of a prior art structure.
Fig. 2 is a schematic diagram of the overall structure of the present utility model.
FIG. 3 is an exploded view of the present utility model.
Fig. 4 is a top view of the present utility model.
FIG. 5 is a cross-sectional view of the utility model at A-A.
Fig. 6 is a schematic structural view of an insulating plate according to the present utility model.
FIG. 7 is a schematic view of the top cover plate of the present utility model.
In the figure: 1-top cover plate, 11-through hole, 12-elliptical hole, 13-counter bore, 2-pole, 21-copper pole, 22-aluminum pole, 3-insulating plate, 31-circular ring part, 32-connecting part, 33-bottom plate part and 4-rupture disk.
Detailed Description
The technical scheme of the utility model is further described below through the attached drawings and the embodiments.
Referring to fig. 2 to 7, the present utility model provides a top cover structure of a secondary battery, which comprises a top cover plate 1, wherein two through holes 11 are provided on the top cover plate 1, a pole 2 is installed in each through hole 11, and an insulating plate 3 is injection-molded in a gap between the top cover plate 1 and the pole 2.
In this embodiment, the top cover plate 1 is used as a pole carrier and is welded with the shell of the battery core to form a battery core shell part, when assembling, the pole is sleeved into the top cover plate in sequence in a mould, then an insulating plate is injection molded, the pole and the top cover plate are insulated and sealed by the insulating plate, conduction and liquid leakage are prevented, the insulating plate is used for replacing the original upper and lower injection molding parts under the injection molding condition, the battery core capacity is further improved, the problem of mixing of the injection molding parts under the positive and negative electrodes is avoided, the number of parts is reduced, the assembling efficiency is improved by 50%, and the productivity is further improved.
Preferably, the insulating plate 3 includes a ring portion 31, a connecting portion 32 and a bottom plate portion 33, the top end of the connecting portion 32 is connected with the ring portion 31, the bottom end of the connecting portion 32 is connected with the bottom plate portion 33, the ring portion 31 is located in the counter bore 13 at the top end of the top cover plate 1 and sleeved on the outer side of the top end of the pole 2, the connecting portion 32 is located in the through hole 11 and sleeved on the outer side of the middle of the pole 2, and the bottom plate portion 33 is located in a gap between the bottom end of the top cover plate 1 and the bottom end of the pole 2.
In this embodiment, the annular portion 31, the connecting portion 32, and the bottom plate portion 33 are integrally formed.
In this embodiment, the insulating plate 3 is made of carbon fiber. The rigid structure of the carbon fiber insulating plate is used for limiting the polar column and the top cover plate, so that deformation and corrosion can be prevented, and the leakage risk is reduced.
Preferably, an elliptical hole 12 is arranged in the middle of the top end of the top cover plate 1, and a rupture disk 4 is arranged in the elliptical hole 12. The rupture disk 4 can release pressure to the battery cell to prevent explosion.
In this embodiment, the two through holes 11 are symmetrically disposed at two sides of the elliptical hole 12. The pole 2 comprises a copper pole 21 and an aluminum pole 22, and the copper pole 21 and the aluminum pole 22 are respectively arranged in the two through holes 11. The copper electrode 21 and the aluminum electrode 22 are electrically connected to the positive and negative electrodes of the core, respectively.
In the embodiment, the total thickness of the top cover plate is reduced, the capacity of the battery cell can be improved by 1% -3% in performance, material parts are reduced, and the production cost is reduced; the insulating board adopting carbon fiber can realize 700-degree cladding, resists 1000-degree high temperature, and has the advantages of light weight and electrolyte corrosion resistance.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.
Claims (4)
1. The top cover structure of the secondary battery is characterized by comprising a top cover plate, wherein two through holes are formed in the top cover plate, a pole is arranged in each through hole, and an insulating plate is injection-molded in a gap between the top cover plate and the pole;
the insulating plate comprises a circular ring part, a connecting part and a bottom plate part, the top end of the connecting part is connected with the circular ring part, the bottom end of the connecting part is connected with the bottom plate part, the circular ring part is positioned in a counter bore at the top end of the top cover plate and sleeved outside the top end of the pole, the connecting part is positioned in the through hole and sleeved outside the middle part of the pole, and the bottom plate part is positioned in a gap between the bottom end of the top cover plate and the bottom end of the pole;
the circular ring part, the connecting part and the bottom plate part are of an integrated structure;
the insulating plate is made of carbon fiber.
2. The secondary battery top cover structure according to claim 1, wherein an elliptical hole is formed in the middle of the top end of the top cover plate, and a rupture disk is arranged in the elliptical hole.
3. The secondary battery top cover structure according to claim 2, wherein two of the through holes are symmetrically provided on both sides of the elliptical hole.
4. A secondary battery top cover structure as claimed in claim 1 or 3, wherein the electrode posts include copper electrode posts and aluminum electrode posts, the copper electrode posts and the aluminum electrode posts being disposed in the two through holes, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321351231.8U CN220306474U (en) | 2023-05-31 | 2023-05-31 | Top cover structure of secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321351231.8U CN220306474U (en) | 2023-05-31 | 2023-05-31 | Top cover structure of secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220306474U true CN220306474U (en) | 2024-01-05 |
Family
ID=89346157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321351231.8U Active CN220306474U (en) | 2023-05-31 | 2023-05-31 | Top cover structure of secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220306474U (en) |
-
2023
- 2023-05-31 CN CN202321351231.8U patent/CN220306474U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |