CN216311928U - Novel lithium battery cover plate pole sealing ring structure - Google Patents
Novel lithium battery cover plate pole sealing ring structure Download PDFInfo
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- CN216311928U CN216311928U CN202122759216.4U CN202122759216U CN216311928U CN 216311928 U CN216311928 U CN 216311928U CN 202122759216 U CN202122759216 U CN 202122759216U CN 216311928 U CN216311928 U CN 216311928U
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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 novel sealing ring structure of a lithium battery cover plate pole, which improves a sealing ring of a lithium battery cover plate, wherein a notch groove is additionally arranged on the sealing ring, the notch groove corresponds to the lower part of the pole, and a corresponding upper plastic structure is combined, so that the upper plastic after the manufacture can generate a certain supporting force on the pole above the pole, and the pole is prevented from excessively compressing the sealing ring, thereby ensuring the sealing performance of the sealing ring and further ensuring the whole sealing performance of the cover plate.
Description
Technical Field
The utility model relates to the technical field of lithium battery cover plates, in particular to a novel sealing ring structure for a pole of a lithium battery cover plate.
Background
The lithium battery is the most widely selected battery in the industry which adopts electric power as energy at present, occupies most markets with better performance, and particularly in the field of electric automobiles, the lithium battery is generally selected as a power battery to provide energy for vehicles.
The conventional lithium battery is formed by separately manufacturing a shell and a cover plate, assembling and injecting liquid after the shell and the cover plate are assembled into a battery core, and the like. The lithium battery cover plate structure is a very important ring, the upper part of the lithium battery cover plate structure is provided with components such as a pole and the like, liquid injection operation is carried out through the lithium battery cover plate structure, and a series of performances such as sealing performance, insulating performance, durability and the like of the lithium battery cover plate structure all reach corresponding standards in the later use process.
Be equipped with utmost point post on the lithium cell apron, utmost point post passes the apron and establishes, has the plastic part that is used for carrying out the insulation to utmost point post respectively in the below and the top of apron, also has corresponding seal structure between utmost point post and the apron simultaneously, generally adopts the sealing washer to seal it. The existing sealing ring structure is assembled in the process of adopting pre-manufactured upper plastic or injection molding encapsulation form upper plastic, a pole can generate certain pressure on a sealing ring, the sealing ring can be failed after excessive compression, and the sealing performance of a cover plate is affected.
Disclosure of Invention
The utility model relates to a novel sealing structure of a lithium battery cover plate pole, which improves a sealing ring of a lithium battery cover plate, wherein a notch groove is additionally arranged on the sealing ring, the notch groove corresponds to the lower part of the pole, and a corresponding upper plastic structure is combined, so that the upper plastic after the manufacture can generate a certain supporting force on the pole above the pole, and the pole is prevented from excessively compressing the sealing ring, thereby ensuring the sealing performance of the sealing ring and further ensuring the integral sealing performance of the cover plate.
The utility model adopts the following technical scheme for realizing the aim:
the utility model provides a novel lithium cell apron utmost point post seal structure, it includes the apron, goes up the plastic, down plastic, utmost point post, sealing washer.
The cover plate is arranged opposite to the lower plastic, and the cover plate is provided with a mounting hole for mounting the pole; the bottom of the pole is provided with a connecting sheet with the diameter larger than that of the pole, the connecting sheet is supported at the upper part of the mounting hole, and the sealing ring is arranged between the connecting sheet and the cover plate; the periphery of the pole is coated and fixed by plastic; the lower plastic is arranged at the lower part of the cover plate, and a through hole corresponding to the mounting hole is formed in the lower plastic; the sealing ring is provided with a plurality of uniformly distributed notch grooves, and the upper plastic is provided with supporting pieces corresponding to the notch grooves.
The end face of the sealing ring is of an L-shaped structure, so that the sealing ring is integrally of a stepped structure, and the connecting sheet is supported in the stepped part of the sealing ring; an annular supporting table is arranged at the center below the bottom of the sealing ring.
The cover plate is also provided with an intermediate ring, and the intermediate ring is arranged above the mounting hole; the end face of the middle ring is of an L-shaped structure, the sealing ring and the pole are installed in the middle ring, and the height of the side wall of the middle ring is higher than that of the connecting sheet after installation; after the pole is installed in the intermediate ring, a gap is reserved between the edge of the connecting sheet and the intermediate ring; the upper plastic surrounds and covers the middle ring and the pole.
Furthermore, the middle ring is provided with an annular groove corresponding to the support table on the sealing ring.
The upper plastic surrounds and covers the middle ring and the pole in an injection molding mode.
The side wall of the middle ring is provided with evenly distributed runners, and in the injection molding process of the upper plastic, the plastic enters a gap between the pole and the middle ring and a gap groove on the sealing ring along the runners for filling; the supporting piece is formed by filling the plastic in the notch groove.
The periphery of the connecting piece is provided with uniformly distributed grooves, and the grooves are filled with the upper plastic in the injection molding process.
The middle ring is connected to the upper part of the mounting hole in a welding mode.
A buckle is arranged above the through hole of the lower plastic; a clamping ring corresponding to the buckle is arranged at the center of the middle ring; the plastic realizes its installation on the apron through the cooperation of buckle and snap ring down.
The utility model adopts the technical scheme and has the following beneficial effects:
the device improves the sealing ring, and after plastic is injected into the notch groove arranged on the device, a supporting piece for supporting the pole column can be formed, so that the sealing ring can be effectively sealed in the later use process, and meanwhile, the pole column cannot excessively compress the sealing ring under the support of the supporting piece, so that the sealing ring is protected; in addition, go up the runner on the plastic passes the intermediate ring, also carried out effectual spacing and protection to last plastic, prevent that it from taking place to rotate at the in-process that uses, also can prevent that utmost point post from taking place to rotate after the recess intussuseption on the connection piece is filled with the plastic.
This device can also separate the assembly on the basis of above beneficial effect, can assemble intermediate ring, sealing washer and last plastic later with intermediate ring welding on the apron and install plastic down, also is an improvement and promotes to the assembly method of apron.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
FIG. 3 is a schematic view of the molded plastic.
Detailed Description
The novel lithium battery cover plate pole sealing structure shown in fig. 1-3 comprises a cover plate 1, an upper plastic 2, a lower plastic 3, a pole 4 and a sealing ring 5.
The cover plate 1 is arranged opposite to the lower plastic 3, and the cover plate 1 is provided with a mounting hole 101 for mounting the pole 4; the bottom of the pole 4 is provided with a connecting sheet 401 with the diameter larger than that of the pole 4, the connecting sheet 401 is supported at the upper part of the mounting hole 101, and the sealing ring 5 is arranged between the connecting sheet 401 and the cover plate 1; the periphery of the pole 4 is coated and fixed by the upper plastic 2; the lower plastic 3 is arranged at the lower part of the cover plate 1, and a through hole 301 corresponding to the mounting hole 101 is arranged on the lower plastic 3; the sealing ring 5 is provided with a plurality of uniformly distributed notch grooves 501, and the upper plastic 2 is provided with a support member 201 corresponding to the notch grooves 501.
The end face of the sealing ring 5 is of an L-shaped structure, so that the whole sealing ring 5 is of a stepped structure, and the connecting piece 401 is supported in the stepped part of the sealing ring 5; an annular support base 502 is arranged at the center below the bottom of the sealing ring 5.
The cover plate 1 is also provided with an intermediate ring 6, and the intermediate ring 6 is arranged above the mounting hole 101; the end face of the middle ring 6 is of an L-shaped structure, the sealing ring 5 and the pole 4 are installed in the middle ring 6, and the height of the side wall of the middle ring 6 is higher than that of the connecting sheet 401 after installation; after the pole 4 is installed in the intermediate ring 6, a gap is reserved between the edge of the connecting sheet 401 and the intermediate ring 6; the upper plastic 2 surrounds and covers the middle ring 6 and the pole 4.
Furthermore, the intermediate ring 6 is provided with an annular groove 601 corresponding to the support base 502 of the seal ring 5.
The upper plastic 2 surrounds and covers the intermediate ring 6 and the pole 4 in an injection molding mode.
The side wall of the middle ring 6 is provided with evenly distributed runners 602, and in the process of injection molding of the upper plastic 2, the plastic enters the gap between the pole 4 and the middle ring 6 and the gap groove 501 on the sealing ring 5 along the runners for filling; the support member 201 is formed by filling the plastic in the notch 501.
The periphery of the connecting piece 401 is provided with uniformly distributed grooves 402, and the grooves 402 are also filled with the upper plastic 2 in the injection molding process.
The intermediate ring 6 is connected to the upper portion of the mounting hole 101 by welding.
A buckle 302 is arranged above the through hole 301 of the lower plastic 3; a snap ring 603 corresponding to the buckle 302 is arranged at the center of the middle ring 6; the lower plastic 3 is mounted on the cover plate 1 through the cooperation of the buckle 302 and the snap ring 603.
In the practical application process of the device, the sealing ring is firstly placed on the middle ring, the supporting table of the sealing ring is matched with the annular groove on the middle ring, and then the pole is placed above the sealing ring, so that the connecting sheet on the pole is matched with the step part above the sealing ring; and then performing injection molding operation on the peripheries of the intermediate ring and the pole, and injecting the upper plastic to the peripheries of the intermediate ring and the pole, wherein in the process, the plastic can flow through a flow channel on the intermediate ring and enter the intermediate ring to fill a gap between the connecting sheet and the intermediate ring, and simultaneously fill the gap groove on the sealing ring and the groove on the connecting sheet.
After the upper plastic is cooled and solidified, the middle ring and the pole are connected into a whole by the upper plastic, and the upper plastic forms a support piece at the notch groove to play a certain supporting role on the pole and prevent the pole from excessively compressing the sealing ring; the plastic in the runner on the middle ring enables the upper plastic whole and the middle ring to form a more compact whole, and can also prevent the upper plastic whole and the middle ring from rotating mutually; the plastic in the groove on the connecting sheet can also play the role of preventing the polar column from rotating after solidification.
The cooperation between the buckle on the lower plastic and the snap ring on the intermediate ring makes the mounting means of lower plastic more convenient.
The mode that the intermediate ring is welded on the cover plate enables the installation of the upper plastic, the pole, the intermediate ring and the sealing ring to be independently carried out, and the intermediate ring is welded on the cover plate after the assembly is completed, so that the assembly of the whole structure is more convenient and quicker.
Claims (9)
1. The utility model provides a novel lithium cell cover plate utmost point post sealing washer structure, it includes the apron, goes up the plastic, down plastic, utmost point post, sealing washer, its characterized in that: the cover plate is arranged opposite to the lower plastic, and the cover plate is provided with a mounting hole for mounting the pole; the bottom of the pole is provided with a connecting sheet with the diameter larger than that of the pole, the connecting sheet is supported at the upper part of the mounting hole, and the sealing ring is arranged between the connecting sheet and the cover plate; the periphery of the pole is coated and fixed by plastic; the lower plastic is arranged at the lower part of the cover plate, and a through hole corresponding to the mounting hole is formed in the lower plastic; the sealing ring is provided with a plurality of uniformly distributed notch grooves, and the upper plastic is provided with supporting pieces corresponding to the notch grooves.
2. The novel lithium battery cover plate pole sealing ring structure of claim 1, which is characterized in that: the end face of the sealing ring is of an L-shaped structure, so that the sealing ring is integrally of a stepped structure, and the connecting sheet is supported in the stepped part of the sealing ring; an annular supporting table is arranged at the center below the bottom of the sealing ring.
3. The novel lithium battery cover plate pole sealing ring structure of claim 2, which is characterized in that: the cover plate is also provided with an intermediate ring, and the intermediate ring is arranged above the mounting hole; the end face of the middle ring is of an L-shaped structure, the sealing ring and the pole are installed in the middle ring, and the height of the side wall of the middle ring is higher than that of the connecting sheet after installation; after the pole is installed in the intermediate ring, a gap is reserved between the edge of the connecting sheet and the intermediate ring; the upper plastic surrounds and covers the middle ring and the pole.
4. The novel lithium battery cover plate pole sealing ring structure of claim 3, which is characterized in that: the middle ring is provided with an annular groove corresponding to the support table on the sealing ring.
5. The novel lithium battery cover plate pole sealing ring structure of claim 4, which is characterized in that: the upper plastic surrounds and covers the middle ring and the pole in an injection molding mode.
6. The novel lithium battery cover plate pole sealing ring structure of claim 5 is characterized in that: the side wall of the middle ring is provided with evenly distributed runners, and in the injection molding process of the upper plastic, the plastic enters a gap between the pole and the middle ring and a gap groove on the sealing ring along the runners for filling; the supporting piece is formed by filling the plastic in the notch groove.
7. The novel lithium battery cover plate pole sealing ring structure of claim 6, which is characterized in that: the periphery of the connecting piece is provided with uniformly distributed grooves, and the grooves are filled with the upper plastic in the injection molding process.
8. The novel lithium battery cover plate pole sealing ring structure of claim 7 is characterized in that: the middle ring is connected to the upper part of the mounting hole in a welding mode.
9. The novel lithium battery cover plate pole sealing ring structure of claim 8, which is characterized in that: a buckle is arranged above the through hole of the lower plastic; a clamping ring corresponding to the buckle is arranged at the center of the middle ring; the plastic realizes its installation on the apron through the cooperation of buckle and snap ring down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122759216.4U CN216311928U (en) | 2021-11-11 | 2021-11-11 | Novel lithium battery cover plate pole sealing ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122759216.4U CN216311928U (en) | 2021-11-11 | 2021-11-11 | Novel lithium battery cover plate pole sealing ring structure |
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| Publication Number | Publication Date |
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| CN216311928U true CN216311928U (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122759216.4U Active CN216311928U (en) | 2021-11-11 | 2021-11-11 | Novel lithium battery cover plate pole sealing ring structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115498331A (en) * | 2022-09-21 | 2022-12-20 | 武汉富航精密工业有限公司 | Secondary battery cover plate structure assembly and production process |
| CN117374491A (en) * | 2023-12-07 | 2024-01-09 | 蜂巢能源科技股份有限公司 | Battery and electric equipment |
-
2021
- 2021-11-11 CN CN202122759216.4U patent/CN216311928U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115498331A (en) * | 2022-09-21 | 2022-12-20 | 武汉富航精密工业有限公司 | Secondary battery cover plate structure assembly and production process |
| CN115498331B (en) * | 2022-09-21 | 2024-01-26 | 武汉富航精密工业有限公司 | Secondary battery cover plate structure assembly and production process |
| CN117374491A (en) * | 2023-12-07 | 2024-01-09 | 蜂巢能源科技股份有限公司 | Battery and electric equipment |
| CN117374491B (en) * | 2023-12-07 | 2024-02-20 | 蜂巢能源科技股份有限公司 | Battery and electric equipment |
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