CN220306368U - Battery top cover structure - Google Patents
Battery top cover structure Download PDFInfo
- Publication number
- CN220306368U CN220306368U CN202321763949.8U CN202321763949U CN220306368U CN 220306368 U CN220306368 U CN 220306368U CN 202321763949 U CN202321763949 U CN 202321763949U CN 220306368 U CN220306368 U CN 220306368U
- Authority
- CN
- China
- Prior art keywords
- panel
- limit
- carbon fiber
- bottom plate
- face
- 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.)
- Active
Links
- 238000001746 injection moulding Methods 0.000 claims abstract description 32
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 27
- 239000004917 carbon fiber Substances 0.000 claims abstract description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000000670 limiting effect Effects 0.000 claims description 32
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 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
- 238000007789 sealing Methods 0.000 description 2
- 206010011469 Crying Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a battery top cover structure, which belongs to the technical field of batteries and comprises a panel, a carbon fiber bottom plate, a positive pole column, a negative pole column, an explosion-proof piece and an injection molding piece; two limit bosses are arranged on the upper end face of the carbon fiber bottom plate; the middle part of each limit boss is provided with a pole mounting hole penetrating through the limit boss and the carbon fiber bottom plate; two limit through holes matched with the limit bosses are formed in the panel; the two limit bosses are respectively penetrated in the corresponding limit through holes; the lower end face of the panel is attached to the upper end face of the carbon fiber bottom plate; the positive pole and the negative pole are respectively penetrated in the two pole mounting holes; the upper end of the positive pole column and the upper end of the negative pole column are respectively sleeved with an injection molding piece; the two injection molding pieces are arranged on the upper end face of the panel; the explosion-proof piece is arranged at the middle position of the panel. The utility model has simple structure and small assembly difficulty, and can effectively improve the assembly efficiency, thereby improving the productivity.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery top cover structure.
Background
The battery top cover is an important component of the battery for sealing the opening of the battery case. At present, battery top cap generally includes plastic, positive pole post, negative pole post, sealing washer, connecting piece, explosion-proof piece, lamina tecti, injection molding under positive pole and the negative pole, has following problem: 1) The device has the advantages of more parts, complex structure, high assembly difficulty and high rejection rate; 2) The thicknesses of the lower injection molding piece of the anode and the lower injection molding piece of the cathode are large, so that the capacity of the battery cell is difficult to be increased in a limited space; 3) The structural strength of the injection molding under the anode and the injection molding under the cathode is low, and the corrosion resistance is poor; 4) The injection molded part is easily melted at high temperature to cause short circuit of the battery.
Therefore, how to provide a battery top cover structure with simple structure, small assembly difficulty, high structural strength and strong corrosion resistance, which can improve the capacity of the battery core and reduce the risk of short circuit of the battery is one of the technical problems to be solved in the field.
Disclosure of Invention
In view of the above, the present utility model provides a battery top cover structure, which aims to solve the problems in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a battery top cover structure, a panel, a carbon fiber bottom plate, a positive pole, a negative pole, an explosion-proof piece and an injection molding piece; two limit bosses are arranged on the upper end face of the carbon fiber bottom plate; the middle part of each limit boss is provided with a pole mounting hole penetrating through the limit boss and the carbon fiber bottom plate; two limit through holes matched with the limit bosses are formed in the panel; the two limit bosses are respectively penetrated in the corresponding limit through holes; the lower end face of the panel is attached to the upper end face of the carbon fiber bottom plate; the positive pole and the negative pole are respectively penetrated in the two pole mounting holes; the upper end of the positive pole and the upper end of the negative pole are sleeved with the injection molding piece; the two injection molding pieces are arranged on the upper end face of the panel; the explosion-proof piece is arranged at the middle position of the panel.
Preferably, the lower ends of the positive pole and the negative pole are respectively provided with an annular limiting table; two first annular limiting grooves matched with the annular limiting tables are formed in the lower end face of the carbon fiber bottom plate; the two first annular limiting grooves are coaxially arranged with the two pole mounting holes respectively.
Preferably, an annular boss is arranged on the inner circumferential surface of each injection molding piece; and annular grooves matched with the annular bosses are formed in the outer circumferential surface of the positive pole column and the outer circumferential surface of the negative pole column.
Preferably, the upper end surface of the panel is provided with two second annular limiting grooves matched with the injection molding piece; the two second annular limiting grooves are respectively arranged coaxially with the two limiting through holes.
Preferably, the vertical section of each limit boss is in an inverted T shape.
Preferably, a rupture disc mounting groove matched with the rupture disc is formed in the middle position of the panel; the explosion-proof piece is welded in the explosion-proof piece mounting groove.
Compared with the prior art, the utility model has the following technical effects:
1) The utility model has simple structure, can reduce the use of material parts, thereby reducing the cost;
2) The thickness of the battery top cover saves space and can be used for improving the capacity of the battery core;
3) The utility model has small assembly difficulty, can effectively improve the assembly efficiency and reduce the rejection rate, thereby improving the productivity
4) On one hand, the utility model can prevent deformation and corrosion due to the limitation of the rigid structure of the carbon fiber bottom plate, and reduce the risk of liquid leakage, and on the other hand, the carbon fiber bottom plate penetrates through the panel, so that the short circuit caused by melting of the injection molding piece at high temperature can be effectively prevented.
Drawings
Fig. 1 is a perspective view of a battery top cover structure according to the present utility model;
FIG. 2 is a cross-sectional view of a battery top cover structure according to the present utility model;
FIG. 3 is an exploded view of a battery top cover structure according to the present utility model;
FIG. 4 is a schematic view of the structure of an injection molding;
FIG. 5 is a schematic structural view of a positive electrode post;
FIG. 6 is a schematic view of the structure of the negative electrode column;
FIG. 7 is a perspective view of a carbon fiber mat from a bottom view;
FIG. 8 is a perspective view of the panel from the bottom view;
in the figure: 1. a panel; 2. a carbon fiber soleplate; 3. a positive electrode post; 4. a negative electrode column; 5. explosion-proof sheet; 6. an injection molding; 7. a limit boss; 8. a post mounting hole; 9. limiting through holes; 10. an annular limiting table; 11. the first annular limiting groove; 12. an annular boss; 13. an annular groove; 14. the second annular limiting groove; 15. explosion-proof piece mounting groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described 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.
Examples
Referring to fig. 1 to 8, the utility model discloses a battery top cover structure, which comprises a panel 1, a carbon fiber bottom plate 2, a positive pole 3, a negative pole 4, an explosion-proof piece 5 and an injection molding piece 6; the lower end face of the panel 1 is attached to the upper end face of the carbon fiber bottom plate 2; two limit bosses 7 are arranged on the upper end face of the carbon fiber bottom plate 2; the two limit bosses 7 are symmetrically arranged left and right; the middle part of each limit boss 7 is provided with a pole mounting hole 8 penetrating through the limit boss 7 and the carbon fiber base plate 2; two limit through holes 9 matched with the limit bosses 7 are formed in the panel 1; the two limit bosses 7 are respectively penetrated in the corresponding limit through holes 9; the positive pole 3 and the negative pole 4 are respectively penetrated in the two pole mounting holes 8; the upper end of the positive pole 3 and the upper end of the negative pole 4 are respectively sleeved with an injection molding piece 6; the two injection molding pieces 6 are arranged on the upper end face of the panel 1; the explosion-proof sheet 5 is disposed at the middle position of the panel 1.
Above-mentioned technical scheme is through setting up the upper and lower injection molding among the carbon fiber bottom plate replacement prior art, not only greatly reduced battery top cap thickness, saved the space, can be used to promote electric core capacity, on the one hand because carbon fiber bottom plate rigid structure restriction moreover, can prevent the deformation, anticorrosion, reduce the weeping risk, and can bicolor injection molding reaches positive negative pole and prevent slow-witted purpose, on the other hand carbon fiber bottom plate passes the panel, can effectively prevent because of the short circuit that the injection molding melts when high temperature caused, whole battery top cap simple structure simultaneously, the assembly degree of difficulty is little, can effectively promote assembly efficiency, thereby can improve the productivity.
In the embodiment, the lower ends of the positive pole 3 and the negative pole 4 are respectively provided with an annular limiting table 10; two first annular limiting grooves 11 matched with the annular limiting table 10 are formed in the lower end face of the carbon fiber bottom plate 2; the two first annular limiting grooves 11 are respectively and coaxially arranged with the two pole mounting holes 8; during assembly, the two annular limiting tables 10 are respectively inserted into the corresponding first annular limiting grooves 11, so that guiding and limiting effects can be achieved.
In this embodiment, an annular boss 12 is provided on the inner circumferential surface of each injection molding 6; annular grooves 13 matched with the annular bosses 12 are formed in the outer circumferential surface of the positive pole column 3 and the outer circumferential surface of the negative pole column 4; the two injection molding pieces 6 are respectively connected with the positive pole post 3 and the negative pole post 4 through the matching of the annular boss 12 and the annular groove 13, so that the structure is more stable.
In the embodiment, the upper end surface of the panel 1 is provided with two second annular limiting grooves 14 which are matched with the injection molding piece 6; the two second annular limiting grooves 14 are respectively coaxially arranged with the two limiting through holes 9; the lower ends of the two annular bosses 12 are respectively embedded in the corresponding second annular limiting grooves 14.
In the embodiment, the vertical section of each limit boss 7 is in an inverted T shape; correspondingly, the vertical section of each limiting through hole 9 is T-shaped.
In the embodiment, a rupture disc mounting groove 15 matched with the rupture disc 5 is formed in the middle position of the panel 1; the rupture disc 5 is welded in the rupture disc mounting groove 15.
In the present embodiment, the injection molding 6 is directly injection molded on the corresponding positive electrode post 3 or negative electrode post 4 through a mold.
In this embodiment, the panel 1 is provided with a liquid filling port.
The assembly process of the utility model is as follows:
1) The carbon fiber bottom plate 2 is assembled with the panel 1, and the limiting boss 7 passes through the limiting through hole 9;
2) The positive pole 3 and the negative pole 4 respectively pass through corresponding pole mounting holes 8;
3) Placing the assembled components into a mold for injection molding, and molding a sizing material through a mold cavity runner to obtain an injection molding piece 6;
4) The rupture disk 5 is assembled into a rupture disk mounting groove on the panel 1 for welding.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the technical scope of the present utility model, so that 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 (6)
1. A battery top cover structure, comprising: the device comprises a panel, a carbon fiber bottom plate, a positive pole column, a negative pole column, an explosion-proof piece and an injection molding piece; two limit bosses are arranged on the upper end face of the carbon fiber bottom plate; the middle part of each limit boss is provided with a pole mounting hole penetrating through the limit boss and the carbon fiber bottom plate; two limit through holes matched with the limit bosses are formed in the panel; the two limit bosses are respectively penetrated in the corresponding limit through holes; the lower end face of the panel is attached to the upper end face of the carbon fiber bottom plate; the positive pole and the negative pole are respectively penetrated in the two pole mounting holes; the upper end of the positive pole and the upper end of the negative pole are sleeved with the injection molding piece; the two injection molding pieces are arranged on the upper end face of the panel; the explosion-proof piece is arranged at the middle position of the panel.
2. The battery top cover structure according to claim 1, wherein the lower end of the positive pole and the lower end of the negative pole are provided with annular limiting tables; two first annular limiting grooves matched with the annular limiting tables are formed in the lower end face of the carbon fiber bottom plate; the two first annular limiting grooves are coaxially arranged with the two pole mounting holes respectively.
3. The battery top cover structure according to claim 1, wherein an annular boss is provided on an inner circumferential surface of each of the injection-molded pieces; and annular grooves matched with the annular bosses are formed in the outer circumferential surface of the positive pole column and the outer circumferential surface of the negative pole column.
4. The battery top cover structure according to claim 1, wherein two second annular limiting grooves matched with the injection molding piece are formed in the upper end face of the panel; the two second annular limiting grooves are respectively arranged coaxially with the two limiting through holes.
5. The battery top cover structure according to claim 1, wherein each of the limit bosses has an inverted T-shaped vertical section.
6. The battery top cover structure according to claim 1, wherein an explosion-proof sheet mounting groove matched with the explosion-proof sheet is formed in the middle position of the panel; the explosion-proof piece is welded in the explosion-proof piece mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321763949.8U CN220306368U (en) | 2023-07-06 | 2023-07-06 | Battery top cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321763949.8U CN220306368U (en) | 2023-07-06 | 2023-07-06 | Battery top cover structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220306368U true CN220306368U (en) | 2024-01-05 |
Family
ID=89348282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321763949.8U Active CN220306368U (en) | 2023-07-06 | 2023-07-06 | Battery top cover structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220306368U (en) |
-
2023
- 2023-07-06 CN CN202321763949.8U patent/CN220306368U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |