CN218939845U - Electric core top cap of increase electric core electric gap - Google Patents
Electric core top cap of increase electric core electric gap Download PDFInfo
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- CN218939845U CN218939845U CN202222636646.1U CN202222636646U CN218939845U CN 218939845 U CN218939845 U CN 218939845U CN 202222636646 U CN202222636646 U CN 202222636646U CN 218939845 U CN218939845 U CN 218939845U
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- annular
- sealing
- top cover
- increasing
- sealing part
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- 238000007789 sealing Methods 0.000 claims abstract description 100
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000004411 aluminium Substances 0.000 claims 2
- 230000015556 catabolic process Effects 0.000 abstract description 6
- 230000003287 optical effect Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model relates to a battery cell top cover, in particular to a battery cell top cover for increasing an electric gap of a battery cell, which comprises a pole, a light aluminum sheet, an upper plastic and a sealing structure, wherein the pole comprises a base and a column body; the first annular sealing part is provided with a second annular sealing part in a sealing convex mode, the first annular sealing part is respectively in sealing fit with the base and the aluminum sheet, the upper plastic is provided with a first annular protruding part extending towards the first annular sealing part, and the first annular protruding part is in sealing fit with the second annular sealing part. The utility model provides an increase electric core electric gap's electric core top cap not only makes to have effective seal between seal structure and the last plastic, increases the area of contact between seal structure and the last plastic moreover to increase the electric gap between utmost point post and the light aluminum sheet, and then reduce the high voltage breakdown risk between utmost point post and the light aluminum sheet utmost point post hole.
Description
Technical Field
The utility model relates to a battery cell top cover, in particular to a battery cell top cover for increasing an electric gap of a battery cell.
Background
At present, as shown in fig. 1-3, the components on the top cover of the battery core mainly comprise a pole 8 and a first component, wherein the first component comprises an upper plastic 11, a terminal pressing block 9 and an optical aluminum sheet 10, the terminal pressing block 9 is arranged on the upper plastic 11, the terminal pressing block 9 is arranged on the terminal pressing block 9, the pole 8 penetrates through the optical aluminum sheet 10 and the upper plastic 11 and is matched with the terminal pressing block 9, and in order to avoid the leakage phenomenon of electrolyte in the pole region of the battery core, a pole sealing ring 29 is arranged between the pole 8 and the first component in a sealing way.
In the test of the cell top cover, it is found that, due to the assembly gap 30 between the existing pole sealing ring 29 and the upper plastic 11, when the cell top cover is subjected to the high voltage withstand test, an electrical breakdown phenomenon occurs between the pole 8 and the optical aluminum sheet 10 (for the high voltage and the specific environment, the smaller the electrical gap is, the more easily the flicker phenomenon occurs).
Disclosure of Invention
The utility model aims at: aiming at the problem that an assembly gap exists between a pole sealing ring and an upper plastic in the prior art, when a battery cell top cover is subjected to high-voltage withstand voltage test, an electric breakdown phenomenon can occur between a pole and a photo-aluminum sheet, and the battery cell top cover for increasing the electric gap of the battery cell is provided.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the battery core top cover for increasing the electric gap of the battery core comprises a pole, a light aluminum sheet, an upper plastic and a sealing structure, wherein,
the pole comprises a base and a column body convexly arranged on the base;
the sealing structure comprises a first annular sealing part which is arranged in an annular mode, a second annular sealing part is arranged on the first annular sealing part in a sealing protruding mode, the first annular sealing part is respectively in sealing fit with the base and the light aluminum sheet, and the second annular sealing part is located between the light aluminum sheet and the cylinder;
the upper plastic is arranged on the aluminum sheet, the upper plastic is sleeved outside the cylinder, the upper plastic is provided with a first annular protruding part extending towards the first annular sealing part, and the first annular protruding part is in sealing fit with the second annular sealing part.
The utility model provides an increase electric core electric gap's electric core top cap utilizes this application seal structure comes as the utmost point post sealing washer, through go up the plastic is provided with the orientation first annular bulge that first annular sealing portion extends, and makes first annular bulge with second annular sealing portion medial surface sealing fit not only makes between seal structure and the last plastic have effective seal, increases the area of contact between seal structure and the last plastic moreover, thereby increases the electric gap between utmost point post and the optical aluminum sheet, and then reduces the high voltage breakdown risk between utmost point post and the optical aluminum sheet utmost point post hole.
Preferably, a first annular groove is formed in the top of the second annular sealing part, and the first annular groove is in concave-convex fit with the first annular protruding part.
Preferably, the bottom surface of the first annular protrusion is a curved surface.
Preferably, the first annular protruding part is located between the cylinder and the second annular sealing part, and the first annular protruding part is in sealing fit with the inner side surface of the second annular sealing part.
Preferably, the second annular sealing part is in sealing fit with the aluminum sheet.
Preferably, a concave-convex matching structure is further arranged between the first annular protruding portion and the second annular sealing portion, the concave-convex matching structure comprises a second annular groove and a second annular protruding portion in concave-convex matching with the second annular groove, one of the second annular groove and the second annular protruding portion is arranged on the second annular sealing portion, and the other of the second annular groove and the second annular protruding portion is arranged on the first annular protruding portion.
Preferably, a third annular groove is formed in the bottom of the upper plastic, and the third annular groove is in concave-convex fit with the top of the second annular sealing part.
Preferably, the first annular protruding part is located between the aluminum sheet and the second annular sealing part, and the first annular protruding part is in sealing fit with the outer side face of the second annular sealing part.
Preferably, the bottom of the first annular projection is in sealing connection with the first annular seal.
Preferably, the number of the first annular protruding parts is at least two, and the adjacent first annular protruding parts are arranged at intervals.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. the utility model provides an increase electric core electric gap's electric core top cap utilizes this application seal structure comes as the utmost point post sealing washer, through go up the plastic is provided with the orientation first annular bulge that first annular sealing portion extends, and makes first annular bulge with second annular sealing portion medial surface sealing fit not only makes between seal structure and the last plastic have effective seal, increases the area of contact between seal structure and the last plastic moreover, thereby increases the electric gap between utmost point post and the optical aluminum sheet, and then reduces the high voltage breakdown risk between utmost point post and the optical aluminum sheet utmost point post hole.
Drawings
Fig. 1 is a schematic perspective view of a cell top cover according to the background art of the utility model.
Fig. 2 is a schematic front view of a structure of a cell top cover according to the background art of the utility model.
FIG. 3 is a schematic cross-sectional view A-A of FIG. 2 in accordance with the background of the utility model.
Fig. 4 is a schematic front view of a structure of a cell top cover for increasing the electrical gap of a cell according to the present utility model.
FIG. 5 is a schematic cross-sectional view of A-A of FIG. 4 (the top of the second annular seal is provided with a first annular groove) of the present utility model.
Fig. 6 is an enlarged schematic view of section B of fig. 5 in accordance with the present utility model.
FIG. 7 is a schematic cross-sectional view of A-A of FIG. 4 (first annular projection located between the cylinder and the second annular seal) in accordance with the present utility model.
FIG. 8 is a schematic cross-sectional view of A-A of FIG. 4 (second annular projection on first annular projection on post) in accordance with the present utility model.
Fig. 9 is an enlarged schematic view of section C of fig. 8 in accordance with the present utility model.
Fig. 10 is a schematic cross-sectional view of A-A of fig. 4 (second annular groove on first annular projection) of the present utility model.
Fig. 11 is an enlarged schematic view of section D of fig. 10 in accordance with the present utility model.
Fig. 12 is a schematic cross-sectional view of A-A of fig. 4 (first annular projection is located between the aluminum sheet and second annular seal) of the present utility model.
Icon: 1-a first annular seal; 2-a first annular projection; 3-a second annular seal; 4-a second annular groove; 5-a second annular boss; 7-a second annular groove; 8-pole; 9-terminal press blocks; 10-a light aluminum sheet; 11-plastic feeding; 13-a base; 14-column; 15-a first annular groove; 29-pole sealing rings; 30-assembly gap.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
As shown in fig. 4-12, a cell top cover for increasing the electrical gap of a cell according to the present embodiment includes a pole 8, an aluminum sheet 10, an upper plastic 11 and a sealing structure, wherein,
the pole 8 comprises a base 13 and a column 14 convexly arranged on the base 13;
the sealing structure comprises a first annular sealing part 1 which is annularly arranged, a second annular sealing part 3 is arranged on the first annular sealing part 1 in a sealing and protruding mode, the first annular sealing part 1 is respectively in sealing fit with the base 13 and the light aluminum sheet 10, and the second annular sealing part 3 is positioned between the light aluminum sheet 10 and the column 14;
the upper plastic 11 is arranged on the aluminum sheet 10, the upper plastic 11 is sleeved outside the column 14, the upper plastic 11 is provided with a first annular protruding portion 2 extending towards the first annular sealing portion 1, and the first annular protruding portion 2 is in sealing fit with the second annular sealing portion 3.
On the basis of the above, it is further preferable that at least two first annular protrusions 2 are provided, and adjacent first annular protrusions 2 are arranged at intervals.
The sealing structure is made of rubber or plastic and has certain elastic deformation capability.
The utility model provides an increase electric core electric gap's electric core top cap utilizes this application seal structure comes as the utmost point post sealing washer, through go up plastic 11 is provided with the orientation first annular bulge 2 that first annular seal portion 1 extends, and make first annular bulge 2 with the sealed cooperation of second annular seal portion 3 medial surface not only makes between seal structure and the last plastic 11 have effective seal, increases the area of contact between seal structure and the last plastic 11 moreover to increase the electric gap between utmost point post and the light aluminum sheet, and then reduce the high voltage breakdown risk between utmost point post and the light aluminum sheet utmost point post hole.
Example 2
As shown in fig. 4 to 6, a cell top cover for increasing an electrical gap of a cell according to this embodiment is a specific structure of embodiment 1, and specifically includes: the top of the second annular sealing part 3 is provided with a first annular groove 15, and the first annular groove 15 is in concave-convex fit with the first annular protruding part 2.
The bottom surface of the first annular protruding portion 2 may be any shape, preferably a curved surface, which meets the requirements.
Example 3
As shown in fig. 7 to 11, a sealing structure according to this embodiment is a specific structure of embodiment 1, which is different from embodiment 2 in that: the first annular protruding part 2 is located between the cylinder 14 and the second annular sealing part 3, and the first annular protruding part 2 is in sealing fit with the inner side surface of the second annular sealing part 3.
Specifically, a concave-convex matching structure is further arranged between the first annular protruding portion 2 and the second annular sealing portion 3, the concave-convex matching structure comprises a second annular groove 4 and a second annular protruding portion 5 which is in concave-convex matching with the second annular groove 4, one of the second annular groove 4 and the second annular protruding portion 5 is arranged on the second annular sealing portion 3, and the other is arranged on the first annular protruding portion 2.
On the basis of the above, it is further preferable that the second annular sealing portion 3 is in sealing engagement with the photo-aluminum sheet 10.
On the basis of the above, in a further preferred manner, a third annular groove 16 is arranged at the bottom of the upper plastic 11, and the third annular groove 16 is in concave-convex fit with the top of the second annular sealing part 3.
In addition to the above, it is further preferable that the bottom of the first annular protrusion 2 is in sealing connection with the first annular seal 1.
Example 4
As shown in fig. 12, a sealing structure according to the present embodiment is a specific structure of embodiment 1, which is different from embodiment 2 or 3 in that: the first annular protruding part 2 is located between the aluminum sheet 10 and the second annular sealing part 3, and the first annular protruding part 2 is in sealing fit with the outer side face of the second annular sealing part 3.
In addition to the above, it is further preferable that the bottom of the first annular protrusion 2 is in sealing connection with the first annular seal 1.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The battery core top cover for increasing the electric gap of the battery core is characterized by comprising a pole column (8), a light aluminum sheet (10), an upper plastic (11) and a sealing structure, wherein,
the pole (8) comprises a base (13) and a column body (14) convexly arranged on the base (13);
the sealing structure comprises a first annular sealing part (1) which is arranged in an annular mode, a second annular sealing part (3) is arranged on the first annular sealing part (1) in a sealing protruding mode, the first annular sealing part (1) is respectively in sealing fit with the base (13) and the aluminum sheet (10), and the second annular sealing part (3) is located between the aluminum sheet (10) and the column (14);
the upper plastic (11) is arranged on the aluminum sheet (10), the upper plastic (11) is sleeved on the outer side of the column body (14), the upper plastic (11) is provided with a first annular protruding portion (2) extending towards the first annular sealing portion (1), and the first annular protruding portion (2) is in sealing fit with the second annular sealing portion (3).
2. A cell top cover for increasing the electrical clearance of a cell according to claim 1, characterized in that the top of the second annular sealing part (3) is provided with a first annular groove (15), and the first annular groove (15) is in concave-convex fit with the first annular protruding part (2).
3. A cell top cover for increasing the electrical clearance of a cell according to claim 2, characterized in that the bottom surface of the first annular protrusion (2) is curved.
4. A cell top cover for increasing the electrical clearance of a cell according to claim 1, characterized in that the first annular projection (2) is located between the post (14) and the second annular seal (3), the first annular projection (2) being in sealing engagement with the inner side of the second annular seal (3).
5. A cell top cover for increasing the electrical clearance of a cell according to claim 4, characterized in that said second annular sealing portion (3) is in sealing engagement with said aluminium tab (10).
6. The cell top cover for increasing the electrical gap of a cell according to claim 4, wherein a concave-convex matching structure is further arranged between the first annular protruding portion (2) and the second annular sealing portion (3), the concave-convex matching structure comprises a second annular groove (4) and a second annular protruding portion (5) which is in concave-convex matching with the second annular groove (4), one of the second annular groove (4) and the second annular protruding portion (5) is arranged on the second annular sealing portion (3), and the other is arranged on the first annular protruding portion (2).
7. The cell top cover for increasing the electrical gap of the cell according to claim 4, wherein a third annular groove (16) is arranged at the bottom of the upper plastic (11), and the third annular groove (16) is in concave-convex fit with the top of the second annular sealing part (3).
8. A cell top cover for increasing the electrical clearance of a cell according to claim 1, characterized in that the first annular protrusion (2) is located between the aluminium sheet (10) and the second annular sealing part (3), the first annular protrusion (2) being in sealing engagement with the outer side of the second annular sealing part (3).
9. A cell top cover for increasing the electrical clearance of a cell according to any of claims 4 to 8, characterized in that the bottom of the first annular projection (2) is in sealing connection with the first annular seal (1).
10. A cell cover for increasing electrical clearance between cells according to any of claims 1 to 8, wherein there are at least two first annular protrusions (2) spaced adjacent to the first annular protrusions (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222636646.1U CN218939845U (en) | 2022-09-28 | 2022-09-28 | Electric core top cap of increase electric core electric gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222636646.1U CN218939845U (en) | 2022-09-28 | 2022-09-28 | Electric core top cap of increase electric core electric gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218939845U true CN218939845U (en) | 2023-04-28 |
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ID=86094401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222636646.1U Active CN218939845U (en) | 2022-09-28 | 2022-09-28 | Electric core top cap of increase electric core electric gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218939845U (en) |
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2022
- 2022-09-28 CN CN202222636646.1U patent/CN218939845U/en active Active
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