CN219067014U - Pole sealing structure, power battery cover and automobile - Google Patents
Pole sealing structure, power battery cover and automobile Download PDFInfo
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- CN219067014U CN219067014U CN202222557646.2U CN202222557646U CN219067014U CN 219067014 U CN219067014 U CN 219067014U CN 202222557646 U CN202222557646 U CN 202222557646U CN 219067014 U CN219067014 U CN 219067014U
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- pole
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- top plate
- insulating sheet
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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 relates to a pole sealing structure, a power battery cover and an automobile, wherein the pole sealing structure comprises a top plate, an insulating sheet, a cover plate and an insulating plate which are sequentially arranged from top to bottom; the sealing ring is sleeved on the periphery of the pole, the upper end of the pole sequentially penetrates through the insulating plate, the cover plate, the insulating sheet and the top plate from bottom to top, the upper end of the pole and the top plate are fixedly connected through a melt formed by welding, the melt seals a gap between the pole and the top plate, the lower end of the pole is provided with a supporting part, the supporting part is upwards supported on the insulating plate, the top plate is downwards supported on the insulating sheet, a cavity surrounding the periphery of the pole is formed among the pole, the insulating plate, the cover plate and the insulating sheet, and the sealing ring is compressed and filled in the cavity. The power cell cover includes a pole seal structure. An automobile includes a power cell including a power cell cover. The utility model can reduce or even eliminate the negative influence of the gap between the pole and the top plate on the temperature rise and the current-carrying capacity.
Description
Technical Field
The utility model relates to an automobile, in particular to a pole sealing structure, a power battery cover and an automobile.
Background
In the existing power battery, a positive electrode post and a negative electrode post are respectively connected with a positive electrode lug and a negative electrode lug of a bare cell in a battery shell, and electrolyte is injected into the battery shell, so that high requirements on the tightness and structural reliability of the power battery are provided. In the prior art, a pole is usually fixedly connected to a top cover of a battery in a press riveting mode, and after the press riveting of the pole is completed, a local fit clearance exists at the periphery of the pole, so that the local resistance value on a current loop of the pole is overlarge, and the problems of temperature rise and insufficient current carrying capacity are caused.
Disclosure of Invention
The utility model aims to provide a pole sealing structure, a power battery cover and an automobile, so as to reduce or eliminate at least one technical problem.
The utility model discloses a pole sealing structure, which comprises a top plate, an insulating sheet, a cover plate and an insulating plate, wherein the top plate, the insulating sheet, the cover plate and the insulating plate are sequentially arranged from top to bottom; the sealing device comprises a top plate, a bottom plate, a first through hole, a second through hole, a third through hole, a fourth through hole, a sealing ring and a sealing ring, wherein the sealing ring is sleeved on the periphery of the top plate, the upper end of the top plate sequentially penetrates through the first through hole, the second through hole, the third through hole and the fourth through hole from bottom to top, a molten body formed by welding is fixedly connected between the upper end of the top plate, the molten body seals a gap between the top plate and the top plate, a supporting part is arranged at the lower end of the top plate and is upwards supported on the insulating plate, the top plate is downwards supported on the insulating plate, a cavity surrounding the periphery of the top plate is formed between the top plate, and the sealing ring is compressed and filled in the cavity.
Optionally, the aperture of the first through hole is larger than the aperture of the second through hole, and the aperture of the first through hole is smaller than the outer diameter of the supporting portion.
Optionally, the third through hole is in clearance fit with the pole; and the fourth through hole is in clearance fit with the pole.
Optionally, the pole is an integrally formed piece.
Optionally, the pole comprises a pole body and a pole piece fixedly connected to the lower end of the pole body, and the edge of the pole piece forms the supporting part.
Optionally, the insulating sheet includes an insulating sheet body and an insulating sheet flange extending upward from an edge of the insulating sheet body.
Alternatively, the melt is formed by means of laser welding.
Optionally, the insulating sheet and the insulating plate are plastic parts.
The power battery cover comprises the pole sealing structure.
The automobile comprises a power battery, wherein the power battery comprises the power battery cover.
The pole and the top plate are fixedly connected in a welding mode, and the gap between the pole and the top plate is sealed by utilizing a fused mass formed by welding, so that the negative influence of the gap between the pole and the top plate on temperature rise and current-carrying capacity can be reduced or even eliminated; through reasonable setting up the sealing washer, utilize the peripheral cavity of sealing washer compression packing utmost point post, can guarantee the sealing performance of utmost point post seal structure.
Drawings
Fig. 1 is a schematic structural view of a power battery cover according to an embodiment;
fig. 2 is a schematic structural view of a positive electrode post sealing structure according to an embodiment;
fig. 3 is a schematic structural view of a negative electrode post sealing structure according to an embodiment.
In the figure: 1-cover plate; 2-an insulating plate; 3-positive electrode column; 4-top plate; 5-an insulating sheet; 6, a sealing ring; 7-melt; 8-a negative pole column; 9-a negative plate; 301-positive column; 302-outer flange; 501-an insulating sheet body; 502-insulating sheet flanging.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
The pole sealing structure as shown in fig. 2 and 3 comprises a top plate 4, an insulating sheet 5, a cover plate 1 and an insulating plate 2 which are sequentially arranged from top to bottom, wherein a first through hole is formed in the insulating plate 2, a second through hole is formed in the cover plate 1, a third through hole is formed in the insulating sheet 5, and a fourth through hole is formed in the top plate 4; the sealing device comprises a top plate 2, a top plate 4, a sealing ring 6 and a sealing ring, wherein the sealing ring 6 is sleeved on the periphery of the top plate, the top end of the top plate sequentially penetrates through a first through hole, a second through hole, a third through hole and a fourth through hole from bottom to top, a molten body 7 formed by welding is fixedly connected between the top end of the top plate 4 and the top plate, the molten body 7 seals a gap between the top plate and the top plate 4, the supporting part is arranged around the top plate, the supporting part is upwards supported on the insulating plate 2, the top plate 4 is downwards supported on the insulating plate 5, a cavity surrounding the periphery of the top plate is formed among the top plate, the insulating plate 2, the cover plate 1 and the insulating plate 5, and the sealing ring 6 is compressed and filled in the cavity.
By adopting the scheme, the pole and the top plate 4 are fastened and connected in a welding mode, so that stable connection between the pole and the top plate 4 can be ensured, the clamping force between the top plate 4 and the supporting part is kept, the gap between the pole and the top plate 4 is sealed by utilizing the melt 7 formed by welding, and the influence of the gap between the pole and the top plate 4 on temperature rise and current-carrying capacity can be reduced or even eliminated. Through rationally setting up sealing washer 6, utilize sealing washer 6 compression to fill the peripheral cavity of utmost point post, can guarantee utmost point post seal structure's sealing performance to, keep the clamping force between roof 4 and the supporting part to be favorable to keeping sealing performance of sealing washer 6, thereby guarantee utmost point post seal structure's sealing performance.
In some embodiments, the aperture of the first through hole is larger than the aperture of the second through hole, the aperture of the first through hole being smaller than the outer diameter of the support. By adopting the scheme, the lower end of the first through hole can be completely plugged by the supporting part, and the lower part of the sealing ring 6 can be filled into a gap between the supporting part and the cover plate 1 to improve the sealing performance.
In some embodiments, the third through hole is in clearance fit with the pole and the fourth through hole is in clearance fit with the pole for ease of assembly.
In some embodiments, as shown in fig. 2, the pole is an integrally formed piece, and the integrally formed pole may be used as the positive pole 3. As a specific embodiment, the post is an integrally formed aluminum alloy member, and includes a positive post column 301 and an outer flange 302 provided at the periphery of the lower end portion of the positive post column 301, the outer flange 302 forming a support portion.
In some embodiments, as shown in fig. 3, the pole includes a pole body and a pole piece fixedly connected to the lower end of the pole body, the edge of the pole piece forms a supporting part, the pole body can be used as a negative pole 8, and the pole piece can be used as a negative pole 9. As a specific embodiment, the pole body is an integrally formed aluminum alloy piece, the pole piece is a copper sheet, and the pole piece is fixedly connected to the lower side of the pole body in a welding mode.
In some embodiments, insulating sheet 5 includes an insulating sheet body 501 and an insulating sheet flange 502 extending upward from an edge of insulating sheet body 501. By providing the insulating sheet flange 502, a better insulating effect can be achieved on the top plate 4.
In some embodiments, the insulating sheet 5 and the insulating sheet 2 are plastic pieces. The plastic part can play an insulating role, and the cost of the plastic part is low.
As a preferred embodiment, the melt 7 is formed by means of laser welding.
The assembly process of the pole sealing structure of any one of the above steps is as follows: the pole penetrates through the sealing ring 6, the insulating plate 2, the cover plate 1, the insulating sheet 5 and the top plate 4, the lower side surface of the pole and the upper surface of the top plate 4 are clamped by a pole clamping tool, and the sealing ring 6 is compressed in a cavity enclosed by the pole, the insulating plate 2, the cover plate 1 and the insulating sheet 5 to form a sealing structure; and (3) clamping the pole clamping tool, welding along a gap between the pole and the top plate 4, solidifying the welding material to form a molten body 7, fixedly connecting the pole and the top plate 4 by using the molten body 7, and sealing the gap between the pole and the top plate 4 by using the molten body 7.
As shown in fig. 1, the present utility model proposes a power battery cover, which includes two pole sealing structures of any one of the above, wherein a pole of one pole sealing structure is a positive pole 3, and a pole of the other pole sealing structure is formed by connecting a negative pole 8 and a negative pole piece 9.
The utility model provides an automobile, which comprises a power battery, wherein the power battery comprises the power battery cover.
In the description of the present specification, a description referring to the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the utility model in connection with the embodiment or example. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
Claims (10)
1. The pole sealing structure is characterized by comprising a top plate, an insulating sheet, a cover plate and an insulating plate which are sequentially arranged from top to bottom, wherein a first through hole is formed in the insulating plate, a second through hole is formed in the cover plate, a third through hole is formed in the insulating sheet, and a fourth through hole is formed in the top plate;
the device also comprises a pole and a sealing ring sleeved on the periphery of the pole, the upper end part of the pole sequentially passes through the first through hole, the second through hole, the third through hole and the fourth through hole from bottom to top, the upper end part of the pole is fixedly connected with the top plate through a melt formed by welding, the melt seals a gap between the pole and the top plate,
the lower end part of the pole is provided with a supporting part which is supported on the insulating plate upwards, the top plate is supported on the insulating sheet downwards,
and a cavity surrounding the periphery of the pole is formed among the pole, the insulating plate, the cover plate and the insulating sheet, and the sealing ring is compressed and filled in the cavity.
2. The pole sealing structure according to claim 1, wherein the first through hole has a larger pore diameter than the second through hole, and the first through hole has a smaller pore diameter than the outer diameter of the support portion.
3. The pole seal structure of claim 1, wherein the third through hole is in clearance fit with the pole; and the fourth through hole is in clearance fit with the pole.
4. The pole seal structure of claim 1, wherein the pole is an integrally formed piece.
5. The pole sealing structure according to claim 1, wherein the pole includes a pole body and a pole piece fixedly connected to a lower end of the pole body, and an edge of the pole piece constitutes the supporting portion.
6. The pole seal structure of claim 1, wherein the insulating sheet includes an insulating sheet body and an insulating sheet flange extending upward from an edge of the insulating sheet body.
7. The pole seal structure of claim 1, wherein the melt is formed by laser welding.
8. The pole sealing structure according to claim 1, wherein the insulating sheet and the insulating plate are plastic members.
9. A power cell cover comprising the pole seal structure of any one of claims 1-8.
10. An automobile comprising a power battery comprising the power battery cover of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222557646.2U CN219067014U (en) | 2022-09-27 | 2022-09-27 | Pole sealing structure, power battery cover and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222557646.2U CN219067014U (en) | 2022-09-27 | 2022-09-27 | Pole sealing structure, power battery cover and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219067014U true CN219067014U (en) | 2023-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222557646.2U Active CN219067014U (en) | 2022-09-27 | 2022-09-27 | Pole sealing structure, power battery cover and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219067014U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117791056A (en) * | 2024-02-27 | 2024-03-29 | 苏州瑞玛精密工业股份有限公司 | Manufacturing method of explosion-proof battery top cover plate |
-
2022
- 2022-09-27 CN CN202222557646.2U patent/CN219067014U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117791056A (en) * | 2024-02-27 | 2024-03-29 | 苏州瑞玛精密工业股份有限公司 | Manufacturing method of explosion-proof battery top cover plate |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |