CN214505739U - Power battery seal nail and battery top cover based on glue injection sealing - Google Patents
Power battery seal nail and battery top cover based on glue injection sealing Download PDFInfo
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- CN214505739U CN214505739U CN202120576834.2U CN202120576834U CN214505739U CN 214505739 U CN214505739 U CN 214505739U CN 202120576834 U CN202120576834 U CN 202120576834U CN 214505739 U CN214505739 U CN 214505739U
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- sealing
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- glue injection
- top cover
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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 the field of battery packaging and manufacturing, in particular to a power battery sealing nail, which comprises a sealing nail cap 1, wherein the bottom surface of the sealing nail cap 1 is provided with a sealing nail post 2, a sealing bottom plate 3 is sleeved on the sealing nail post 2, and the sealing bottom plate 3 is contacted with the bottom surface of the sealing nail cap 1; an annular groove is formed in the wall of the sealing nail column 2, and a sealing rubber ring 4 is arranged in the annular groove; a battery top cover based on glue injection sealing comprises a power battery sealing nail and a top cover plate 5, wherein a top cover plate 6 is arranged on the bottom surface of the top cover plate 5, a liquid injection hole which is matched with the power battery sealing nail and penetrates through the top cover plate 5 is formed in the top surface of the top cover plate 5, a glue injection through hole 7 is formed in the top cover plate 6, and the axis of the glue injection through hole 7 is overlapped with the axis of the liquid injection hole; the gap formed between the glue injection through hole and the end part of the sealing nail column is injected into the glue injection sealing body through the glue injection process, the gap between the glue injection through hole and the sealing nail column can be fully filled with the glue injection sealing body, and the sealing of the glue injection hole is ensured.
Description
Technical Field
The utility model relates to a battery package makes the field, concretely relates to power battery seals nail and because sealed battery top cap of injecting glue.
Background
The welding process of the sealing nail of the liquid filling port of the power battery is crucial in the production process of the power battery, the quality of the welding quality of the sealing nail can affect the yield and the performance of the final power battery, and for square aluminum-shell batteries, the traditional process adopts a laser welding process, so that the efficiency and the yield are low, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sealed nail of power battery and sealed battery top cap based on injecting glue has solved and has adopted laser welding technology welding seal nail, and the problem that welding efficiency is low, and this application adopts the sealed nail of injecting glue technology, can effectively reduction in production cost and improvement production efficiency.
In order to solve the technical problem, the utility model provides a following technical scheme:
the sealing nail comprises a sealing nail cap, wherein a sealing nail column is arranged on the bottom surface of the sealing nail cap, a sealing bottom plate is sleeved on the sealing nail column, and the sealing bottom plate is in contact with the bottom surface of the sealing nail cap; an annular groove is formed in the wall of the sealing nail column, and a sealing rubber ring is arranged in the annular groove.
Preferably, the cross section of the sealing rubber ring is circular.
Preferably, the inner diameter of the sealing rubber ring is smaller than or equal to the inner diameter of the annular groove, and the outer diameter of the sealing rubber ring is larger than the diameter of the sealing nail column.
Preferably, the section of the sealing nail cap is in a round table shape, and the sealing nail column is located on the small-diameter end face of the sealing nail cap.
Preferably, the sealing bottom plate is a circular ring plate, and the outer diameter of the sealing bottom plate is equal to the diameter of the small-diameter end of the sealing nail cap.
Preferably, the sealing rubber ring is positioned in the middle of the sealing nail column.
In a second aspect, the scheme also provides a battery top cover based on glue injection sealing, which comprises the power battery sealing nail and a top cover plate, wherein the bottom surface of the top cover plate is provided with a top cover plate, the top surface of the top cover plate is provided with a liquid injection hole which is matched with the power battery sealing nail and penetrates through the top cover plate, the top cover plate is provided with a glue injection through hole, and the axis of the glue injection through hole is superposed with the axis of the liquid injection hole;
the liquid injection hole comprises a first hole and a second hole which are sequentially connected and coaxial, the aperture of the first hole is larger than that of the second hole, the glue injection through hole is adjacent to the second hole, and the aperture of the glue injection through hole is larger than that of the second hole;
the sealing nail column is embedded into the glue injection through hole, and a gap between the column wall of the sealing nail column and the inner wall of the glue injection through hole is used for accommodating the glue injection sealing body.
Preferably, the first bore is conical in cross-section.
Preferably, an annular pressure groove is formed in the step surface between the first hole and the second hole
Compared with the prior art, the utility model, have following advantage:
1. the sealing bottom plate sleeved on the sealing nail post is convenient to be tightly attached to the step surface between the first hole and the second hole, so that the sealing effect between the sealing nail cap and the liquid injection hole is ensured; the sealing rubber ring on the sealing nail column can ensure the sealing effect between the sealing nail column and the second hole, and effectively avoid the liquid in the battery cell and the colloid for sealing from overflowing; the sealing rubber ring is sleeved in the annular groove, and the clamping structure formed by the annular groove and the sealing rubber ring effectively avoids the phenomenon that the annular groove is separated from a preset position in the process of embedding the sealing nail column into the second hole, so that the sealing effect is poor;
2. compared with welding technology for welding the sealing nail and the battery top cover, the gap formed between the glue injection through hole and the end part of the sealing nail column is injected into the glue injection sealing body through the glue injection technology, the glue injection sealing body can fully fill the gap between the glue injection through hole and the sealing nail column, and the sealing of the glue injection hole is ensured; meanwhile, the sealing rubber ring can prevent the glue injection sealing body from overflowing from the second hole, and the liquid injection hole is completely sealed under the action of the sealing rubber ring; compare welding process, this scheme only needs inject into the injecting glue seal earlier, insert sealed nail afterwards can, sealed process is simple, has greatly promoted production efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a cross-sectional view of a power cell seal nail;
FIG. 2 is a schematic cross-sectional view of a battery top cover;
fig. 3 is an enlarged view of a portion of the injection hole of fig. 2.
Reference numbers and corresponding part names in the drawings:
1. sealing the nail cap; 2. sealing the nail column; 3. sealing the bottom plate; 4. sealing the rubber ring; 5. a top cover sheet; 6. a top cover plate; 7. injecting glue through holes; 8. and (5) pressing the groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail with reference to the following embodiments, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not intended as limitations of the present invention.
Examples
As shown in fig. 1, the embodiment provides a power battery sealing nail, which includes a sealing nail cap 1, a sealing nail post 2 is arranged on the bottom surface of the sealing nail cap 1, a sealing bottom plate 3 is sleeved on the sealing nail post 2, and the sealing bottom plate 3 is in contact with the bottom surface of the sealing nail cap 1; an annular groove is formed in the wall of the sealing nail column 2, and a sealing rubber ring 4 is arranged in the annular groove.
Specifically, the seal rubber ring 4 is located the middle part of the seal nail post 2, and the cross-section of the seal rubber ring 4 adopted by the embodiment is circular, so that the gap between the seal nail post 2 and the liquid injection hole is convenient to fill, and the sealing effect is good.
Further improvements to this embodiment: the inner diameter of the sealing rubber ring 4 is smaller than or equal to the inner diameter of the annular groove, and the outer diameter of the sealing rubber ring 4 is larger than the diameter of the sealing nail column 2. Through the arrangement, the sealing rubber ring 4 is firmly sleeved on the sealing nail column 2, and the sealing rubber ring 4 is in interference connection with the inner diameter of the second hole, so that the sealing effect between the sealing nail column 2 and the second hole is ensured.
Further improvements to this embodiment: the section of the sealing nail cap 1 is in a round table shape, and the sealing nail column 2 is positioned on the small-diameter end face of the sealing nail cap 1. The round platform-shaped sealing nail cap 1 is beneficial to the tight fit of the sealing nail and the liquid injection hole, and the sealing effect is ensured.
Further improvements to this embodiment: the sealing bottom plate 3 is a circular ring plate, and the outer diameter of the sealing bottom plate 3 is equal to the diameter of the small-diameter end of the sealing nail cap 1. The sealing bottom plate 3 is tightly attached to the step surface between the first hole and the second hole, and the glue injection sealing body injected by the glue injection process is prevented from overflowing from the second hole.
As shown in fig. 2 and fig. 3, the embodiment further provides a battery top cover based on glue injection sealing, which includes a power battery sealing nail and a top cover plate 5, wherein a top cover plate 6 is arranged on the bottom surface of the top cover plate 5, a liquid injection hole which is matched with the power battery sealing nail and penetrates through the top cover plate 5 is arranged on the top surface of the top cover plate 5, a glue injection through hole 7 is arranged on the top cover plate 6, and the axis of the glue injection through hole 7 coincides with the axis of the liquid injection hole;
the liquid injection hole comprises a first hole and a second hole which are sequentially connected and coaxial, the aperture of the first hole is larger than that of the second hole, the glue injection through hole 7 is adjacent to the second hole, and the aperture of the glue injection through hole 7 is larger than that of the second hole;
the sealing nail column 2 is embedded into the glue injection through hole 7, and a gap between the column wall of the sealing nail column 2 and the inner wall of the glue injection through hole 7 is used for accommodating a glue injection sealing body.
Specifically, the section of the first hole is conical, so that the sealing nail cap 1 is tightly attached to the first hole, and the sealing effect is ensured; when the battery top cover of the embodiment is used, the glue injection sealing body is injected into the glue injection through hole 7 after the top cover plate 5 and the top cover plate 6 are assembled with the battery core, and then the sealing nail columns of the power battery sealing nails are inserted into the glue injection through hole 7, so that the sealing of the sealing nails is realized, the sealing structure is compared with the traditional welding sealing structure, the production and process cost are greatly saved, the production efficiency is improved, and the yield is improved.
As shown in fig. 3, the present embodiment is further modified: an annular pressure groove 8 is formed in the step surface between the first hole and the second hole. The adhesive can be injected into the pressure groove 8, so that the sealing bottom plate 3 is firmly connected with the step surface between the first hole and the second hole, and the overall connection firmness of the sealing nail and the liquid injection hole is improved.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The power battery sealing nail is characterized by comprising a sealing nail cap (1), wherein a sealing nail column (2) is arranged on the bottom surface of the sealing nail cap (1), a sealing bottom plate (3) is sleeved on the sealing nail column (2), and the sealing bottom plate (3) is in contact with the bottom surface of the sealing nail cap (1); an annular groove is formed in the wall of the sealing nail column (2), and a sealing rubber ring (4) is arranged in the annular groove.
2. The power battery seal nail according to claim 1, wherein the cross section of the seal rubber ring (4) is circular.
3. The power battery seal nail according to claim 1, characterized in that the inner diameter of the seal rubber ring (4) is smaller than or equal to the inner diameter of the annular groove, and the outer diameter of the seal rubber ring (4) is larger than the diameter of the seal nail post (2).
4. The power battery sealing nail according to claim 1, characterized in that the sealing nail head (1) is truncated cone-shaped in cross section, and the sealing nail column (2) is located on the small-diameter end face of the sealing nail head (1).
5. The power battery seal nail according to claim 4, characterized in that the seal bottom plate (3) is a circular ring plate, and the outer diameter of the seal bottom plate (3) is equal to the diameter of the small-diameter end of the seal nail cap (1).
6. The power battery sealing nail according to claim 1, characterized in that the sealing rubber ring (4) is located in the middle of the sealing nail column (2).
7. A battery top cover based on glue injection sealing is characterized by comprising the power battery sealing nail and a top cover plate (5) as claimed in any one of claims 1 to 6, wherein the bottom surface of the top cover plate (5) is provided with the top cover plate (6), the top surface of the top cover plate (5) is provided with a liquid injection hole which is matched with the power battery sealing nail and penetrates through the top cover plate (5), the top cover plate (6) is provided with a glue injection through hole (7), and the axis of the glue injection through hole (7) is superposed with the axis of the liquid injection hole;
the liquid injection hole comprises a first hole and a second hole which are sequentially connected and coaxial, the aperture of the first hole is larger than that of the second hole, the glue injection through hole (7) is adjacent to the second hole, and the aperture of the glue injection through hole (7) is larger than that of the second hole;
the sealing nail column (2) is embedded into the glue injection through hole (7), and a gap between the column wall of the sealing nail column (2) and the inner wall of the glue injection through hole (7) is used for accommodating a glue injection sealing body.
8. The battery top cap based on glue injection sealing of claim 7, characterized in that the first hole is conical in cross-section.
9. The battery top cover based on glue injection sealing as claimed in claim 8, wherein an annular pressing groove (8) is formed in the step surface between the first hole and the second hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120576834.2U CN214505739U (en) | 2021-03-09 | 2021-03-09 | Power battery seal nail and battery top cover based on glue injection sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120576834.2U CN214505739U (en) | 2021-03-09 | 2021-03-09 | Power battery seal nail and battery top cover based on glue injection sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214505739U true CN214505739U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120576834.2U Active CN214505739U (en) | 2021-03-09 | 2021-03-09 | Power battery seal nail and battery top cover based on glue injection sealing |
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| CN (1) | CN214505739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094291A (en) * | 2021-12-23 | 2022-02-25 | 上海兰钧新能源科技有限公司 | Sealing rubber nail, battery cover plate and sealing method |
-
2021
- 2021-03-09 CN CN202120576834.2U patent/CN214505739U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094291A (en) * | 2021-12-23 | 2022-02-25 | 上海兰钧新能源科技有限公司 | Sealing rubber nail, battery cover plate and sealing method |
| CN114094291B (en) * | 2021-12-23 | 2023-09-01 | 上海兰钧新能源科技有限公司 | Sealant nail, battery cover plate and sealing method |
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| GR01 | Patent grant | ||
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Address after: 361000 201-1, complex building 5, No. 11, Butang Middle Road, torch high tech Zone (Tongxiang) industrial base, Xiamen, Fujian Patentee after: Xiamen Haichen Energy Storage Technology Co.,Ltd. Address before: 361000 201-1, complex building 5, No. 11, Butang Middle Road, torch high tech Zone (Tongxiang) industrial base, Xiamen, Fujian Patentee before: Xiamen Haichen New Energy Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |