CN213716967U - Riveting top cap and square-shell battery cell - Google Patents
Riveting top cap and square-shell battery cell Download PDFInfo
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- CN213716967U CN213716967U CN202023345505.1U CN202023345505U CN213716967U CN 213716967 U CN213716967 U CN 213716967U CN 202023345505 U CN202023345505 U CN 202023345505U CN 213716967 U CN213716967 U CN 213716967U
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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 riveting top cap and square shell electricity core, the riveting top cap includes: the cover plate is provided with a positive pole mounting hole, a negative pole mounting hole and an explosion-proof sheet mounting hole; the explosion-proof sheet is arranged on the explosion-proof sheet mounting hole; the positive and negative electrode plastic pads are arranged on the surface of the cover plate and are provided with first through holes; the positive and negative lower plastic plates are attached to the lower surface of the cover plate and provided with second through holes and pressure relief channels; the positive and negative pole posts are sleeved with sealing rings, sequentially penetrate through the second through holes, the positive and negative pole post mounting holes and the first through holes and are assembled with the positive and negative upper plastic pads and the positive and negative lower plastic plates through riveting, and the positive and negative pole posts are higher than the upper surface of the cover plate by a preset height; the positive and negative riveting blocks are respectively riveted with the upper ends of the positive and negative poles; and the positive and negative pole switching pieces are respectively and fixedly connected to the lower ends of the positive and negative poles. Riveting top cap square shell electricity core simple structure, it is with low costs, it is high to assemble efficiency in groups, and the gas tightness is good.
Description
Technical Field
The utility model relates to a power battery technical field specifically relates to a riveting top cap and assembly method and square shell electricity core thereof.
Background
The current lithium cell new forms of energy market development is rapid, and lithium cell mainly uses square shell electricity core, cylinder electricity core and soft-packaged electric core as the main on the market, and wherein the market occupation volume of square shell electricity core is the biggest, and square shell electricity core structural strength is big, and is efficient in groups, has the advantage as the lithium ion cell structure. The square-shell battery cell is generally composed of a shell, a top cover and a battery cell module. The traditional square-shell battery cell mainly has the following problems:
1. the traditional square-shell battery cell pole is of a bolt structure, the structure is complex, the assembly efficiency is low, and the contact resistance is large;
2. the air tightness and durability of the traditional square-shell battery cell pole are poor, and the guarantee of the air tightness is crucial to the safety of the lithium ion battery;
3. the traditional square-shell battery cell pole is high in height and large in occupied space.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, top cap and square shell electricity core with low costs, easily module assembly.
In order to achieve the above object, the utility model adopts the following technical scheme:
according to the utility model discloses an aspect provides a riveting top cap, riveting top cap is installed on the upper end opening of the casing of square shell electricity core, wherein, riveting top cap includes:
the cover plate is provided with a positive pole mounting hole, a negative pole mounting hole and an explosion-proof sheet mounting hole positioned between the positive pole mounting hole and the negative pole mounting hole;
the explosion-proof piece is arranged on the explosion-proof piece mounting hole;
the positive pole upper plastic pad and the negative pole upper plastic pad are mounted on the upper surface of the cover plate and are provided with first through holes aligned with the positive pole mounting holes and the negative pole mounting holes;
the lower plastic plate of the positive pole and the lower plastic plate of the negative pole are attached to the lower surface of the cover plate and are provided with second through holes aligned with the mounting holes of the positive pole and the negative pole and pressure relief channels aligned with the mounting holes of the explosion-proof piece;
the positive pole and the negative pole are sleeved with sealing rings, penetrate through the second through hole, the positive pole mounting hole, the negative pole mounting hole and the first through hole in sequence and are assembled with the positive pole upper plastic pad, the negative pole upper plastic pad, the positive pole lower plastic plate and the negative pole lower plastic plate through riveting, and the positive pole and the negative pole are higher than the upper surface of the cover plate by a preset height;
the positive pole riveting block and the negative pole riveting block are riveted with the upper ends of the positive pole column and the negative pole column;
and the positive pole adapter plate and the negative pole adapter plate are fixedly connected to the lower ends of the positive pole column and the negative pole column.
In a preferred embodiment, the cover plate, the positive and negative posts, and the positive and negative rivet blocks are made of aluminum or an aluminum alloy.
In a preferred embodiment, the positive pole mounting hole and the negative pole mounting hole are counter bores, and the positive pole plastic pad and the negative pole plastic pad are partially embedded in the positive pole mounting hole and the negative pole mounting hole.
In a preferred embodiment, the positive pole mounting hole and the negative pole mounting hole are provided with a larger square groove upper part and a smaller round hole lower part, and the shape and size of the positive pole upper plastic pad and the negative pole upper plastic pad are consistent with the shape and size of the square groove upper part.
In a preferred embodiment, the positive and negative riveting blocks are partially embedded in the positive and negative plastic pads.
In a preferred embodiment, a plurality of positioning pillars are formed on the upper surfaces of the positive lower plastic plate and the negative lower plastic plate, a plurality of blind holes corresponding to the positioning pillars one to one are formed on the lower surface of the cover plate, and the positioning pillars are engaged in the blind holes.
In a preferred embodiment, the positive lower plastic plate and the negative lower plastic plate are connected with a through hole through one of the positioning posts.
In a preferred embodiment, the predetermined height is 2-5 mm.
In a preferred embodiment, the positive and negative posts are identical in structure and each include a square bottom and a post extending upward from the center of the square bottom.
In a preferred embodiment, the post includes a lower portion of larger diameter and an upper portion of smaller diameter.
In a preferred embodiment, the sealing ring is sleeved on the lower part of the column body.
In a preferred embodiment, the positive electrode patch and the negative electrode patch are laser welded to the square bottom of the positive electrode pillar and the negative electrode pillar, respectively.
In a preferred embodiment, the positive electrode adapter plate and the negative electrode adapter plate have the same structure, are L-shaped, and are arranged in mirror symmetry.
In a preferred embodiment, the inner side surfaces of the positive electrode adapter sheet and the negative electrode adapter sheet are adhered with insulating sheets.
In a preferred embodiment, the seal ring is a fluororubber seal ring or a ceramic seal ring.
In a preferred embodiment, the explosion-proof sheet mounting hole is a runway-shaped hole, and a PET protective film is pasted on the upper end of the explosion-proof sheet mounting hole.
According to the utility model discloses an on the other hand still provides a square-shell electricity core, including casing, electric core module and top cap, the casing has the upper end opening, the electric core module is followed the upper end opening is packed into in the casing, the top cap seals the upper end opening, wherein, the top cap is as above riveting top cap.
According to another aspect of the present invention, there is provided a riveting header assembly method, wherein the riveting header is the riveting header as described above, the assembly method comprising the steps of:
s1, after the explosion-proof piece is installed in the explosion-proof piece installation hole of the cover plate, the cover plate is attached to the positive lower plastic plate and the negative lower plastic plate;
s2, respectively installing the positive pole upper plastic pad and the negative pole upper plastic pad on a positive pole mounting hole and a negative pole mounting hole of the cover plate;
s3, sleeving sealing rings on the positive pole column and the negative pole column, sequentially penetrating through the second through hole, the positive pole column mounting hole, the negative pole column mounting hole and the first through hole, and pre-riveting;
s4, respectively riveting the positive pole riveting block and the negative pole riveting block to the upper ends of the positive pole column and the negative pole column;
and S5, laser welding the positive adapter plate and the negative adapter plate to the lower ends of the positive pole column and the negative pole column respectively, and attaching insulating sheets to the inner sides of the positive adapter plate and the negative adapter plate to complete the assembly of the riveting top cover.
The utility model adopting the technical proposal has the advantages that,
1. the riveting top cover has simple structure, low cost and high manufacturing efficiency;
2. the metal area of the riveted pole is large, the welding is easy, and the contact resistance is small;
3. the height of the pole is low, the space of the battery body is improved, and the energy density of the battery core is increased.
Drawings
Fig. 1 is a perspective view of the riveted top cover of the present invention.
FIG. 2 is an exploded view of the riveted cap shown in FIG. 1;
FIG. 3 is a perspective view of the positive post of the riveted top cover shown in FIG. 2;
FIG. 4 is a bottom perspective view of the cover plate of the riveted top cover shown in FIG. 2;
FIG. 5 is a bottom perspective view of the positive bottom plastic plate of the riveted top cover shown in FIG. 2;
FIG. 6 is a perspective view of the plastic pad on the positive electrode of the riveted top cover shown in FIG. 2;
FIG. 7 is a bottom perspective view of the positive rivet block of the rivet cap shown in FIG. 2;
fig. 8 is a perspective view of a square-shell battery cell of the present invention;
fig. 9 is an exploded view of the square-shelled cell shown in fig. 8.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.
In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.
In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.
As shown in fig. 1 to 7, the plastic top cover 1 may include a cover plate 11, a positive pole post 12a, a negative pole post 12b, a positive pole upper plastic pad 13a, a negative pole upper plastic pad 13b, an explosion-proof sheet 14, a lower positive pole plastic plate 15a, a lower negative pole plastic plate 15b, a positive pole riveting block 16a, a negative pole riveting block 16b, a positive pole adapter sheet 17a, a negative pole adapter sheet 17b, a sealing ring 18, and the like. The cover plate 11 is a plain aluminum sheet, which may be formed by stamping. The dimensions of the cover plate 11 can be designed according to the specification of the square-shell cell. The cover plate 11 is provided with a positive pole mounting hole 111, a negative pole mounting hole 112 and an explosion-proof sheet mounting hole 113 between the positive pole mounting hole 111 and the negative pole mounting hole 112. The positive post mounting hole 111, the negative post mounting hole 112, and the rupture disk mounting hole 113 may be machined. The positive post mounting hole 111 and the negative post mounting hole 112 have the same structure. The positive post mounting hole will be described below as an example. Specifically, the positive post mounting hole 111 is a counter bore, so that the plastic pad 13a on the positive electrode is partially embedded therein, thereby facilitating the installation. The positive post mounting hole 111 includes a square slot upper portion 1111 and a round hole lower portion 1112. The positive electrode upper plastic pad 13a is formed in conformity with the shape and size of the square groove upper portion 1111 so as to be tightly engaged with the square groove upper portion 1111. Preferably, the corners of the square groove upper portion 1111 are rounded. The lid plate 11 also has a liquid inlet 115, and the liquid inlet 115 is used for injecting an electrolyte.
The rupture disk 14 is mounted on the rupture disk mounting hole 113. In the illustrated embodiment, the upper portion of the rupture disk mounting hole 113 is higher than the upper surface of the cover plate 11, and the diameter of the upper portion thereof is smaller than that of the lower portion, i.e., the rupture disk mounting hole 113 is a counterbore as viewed from the lower surface of the cover plate 11. That is, the explosion-proof sheet 16 is embedded in the lower surface of the cover plate 11. In order to protect the rupture disk 14, a protective film 140 is attached to the upper end of the rupture disk mounting hole 113. Preferably, the protective film 140 is a PET patch. The explosion-proof sheet 14 is ruptured when the pressure inside the square-shelled battery cell 100 (see fig. 8) is greater than a threshold value (e.g., 0.6MPa) to avoid explosion of the square-shelled battery cell 100. The explosion-proof sheet 14 may be made of an aluminum alloy and fixed to the cover plate 11 by laser welding. The rupture disk mounting hole 113 is designed according to the shape of the rupture disk 14. In the illustrated embodiment, the rupture disk mounting holes 113 are racetrack shaped holes.
The positive and negative upper plastic pads 13a and 13b are mounted on the upper surface of the cap plate 11, and are partially inserted into the positive and negative post mounting holes 111 and 112 of the cap plate 11. The centers of the positive electrode upper plastic pad 13a and the negative electrode upper plastic pad 13b have through holes 131 aligned with (specifically, central circular holes thereof) of the positive electrode post mounting holes 111 and the negative electrode post mounting holes 112 for the positive and negative electrode posts 12a and 12b to pass through. The positive electrode plastic pad 13a and the negative electrode plastic pad 13b have the same structure. The positive electrode plastic pad 13a will be described as an example. The positive electrode upper plastic pad 13a has a rounded square shape and includes a larger bottom 131a and a smaller groove 132a formed on the larger bottom 131 a. The side length of the larger bottom 131a is usually 1-2 mm longer than that of the smaller groove 132 a. Preferably, the thickness of the larger bottom 131a corresponds to the depth of the upper portion 1111 of the square groove. The smaller groove 132a is used to receive the positive rivet block 16a, i.e., the positive rivet block 16a is inserted into the smaller groove 132 a. The positive electrode upper plastic pad 13a and the negative electrode upper plastic pad 13b may be prefabricated by injection molding.
A positive lower electrode plastic plate 15a and a negative lower electrode plastic plate 15b are attached on the lower surface of the cap plate 11 for embedded mounting in the case 2 of the square-shelled battery cell 100 (as shown in fig. 8). Specifically, a plurality of positioning pillars 152 are formed on the upper surfaces of the positive and negative plastic plates 15a and 15b, and accordingly, a plurality of blind holes 114 corresponding to the positioning pillars 152 in a one-to-one manner are formed on the lower surface of the cover plate 11, and the positive and negative plastic plates 15a and 15b are attached to the lower surface of the cover plate 11 by engaging the positioning pillars 152 in the blind holes 114. The diameter of the locating post 152 may be slightly larger than the blind bore 114 to achieve an interference fit fixation. Positive and negative lower plastic plates 15a and 15b have through holes 151 aligned with positive and negative post mounting holes 111 and 112 and pressure relief channels 153 aligned with rupture disk mounting holes 113. The pressure relief channel 153 is a rectangular net structure. The positive lower electrode plastic plate 15a and the negative lower electrode plastic plate 15b may be prefabricated by injection molding. Preferably, the positive lower plastic plate 15a and the negative lower plastic plate 15b are connected together. Specifically, the positive bottom plastic plate 15a has a smaller connecting portion 155 with a through hole 154, and the negative bottom plastic plate 15b has a groove-shaped connecting end portion 156 with a positioning post 152. When mounted, the smaller connecting portion 155 engages over the recessed connecting end 156 and the locating post 152 is inserted into the through hole 154 and the blind hole 114.
The positive pole post 12a and the negative pole post 12b are sleeved with sealing rings 18, sequentially pass through holes 151 of the positive lower pole plastic plate 15a and the negative lower pole plastic plate 15b, a positive pole mounting hole 111 and a negative pole mounting hole 112 of the cover plate 11 and through holes 131 of the positive upper plastic pad 13a and the negative upper plastic pad 13b and are assembled with the positive upper plastic pad 13a and the negative upper plastic pad 13b, the positive lower plastic plate 15a and the negative lower plastic pad 15b through riveting, and the positive pole post 12a and the negative pole post 12b are higher than the upper surface of the cover plate 11 by a preset height. The predetermined height is generally small, i.e., the positive and negative posts 12a and 12b are much lower in height than existing posts, which may increase the battery body space and increase the cell energy density. Preferably, the predetermined height is 2-5 mm. More preferably, the predetermined height is about 3 mm. Because the positive post 12a and the negative post 12b are sleeved with the sealing rings 18, it is ensured that no air leaks at the positive post 12a and the negative post 12b, and the overall air tightness of the square-shell battery core 100 (see fig. 8) is improved.
The positive and negative rivet blocks 16a and 16b are respectively riveted to the upper ends of the positive and negative posts 12a and 12b (specifically, the upper portions 1222 of the columns 122). The positive electrode rivet block 16a and the negative electrode rivet block 16b have the same structure. The positive electrode caulking piece 16a will be described as an example. As shown in fig. 7, the positive rivet 16a has a square shape, and includes a smaller bottom 161a and a larger top 162a, the smaller bottom 161a is embedded in the smaller groove 132a of the positive plastic pad 13a, and the larger top 162a has the same shape and size as the larger bottom 131a of the positive plastic pad 13 a.
The positive electrode adaptor piece 17a and the negative electrode adaptor piece 17b are fixedly connected to the lower ends of the positive electrode post 12a and the negative electrode post 12b, respectively. The positive electrode adapter sheet 17a and the negative electrode adapter sheet 17b have the same structure, are L-shaped and are arranged in mirror symmetry. The inner side surfaces of the positive pole adapter plate 17a and the negative pole adapter plate 17b are adhered with corresponding insulation sheets 19 so as to be insulated and separated from the battery cell module 3.
Furthermore, in an embodiment of the present invention, there is also provided an assembling method of the riveting head cap 1 as described above, including the steps of:
s1. after the explosion-proof sheet 14 is mounted in the explosion-proof sheet mounting hole 113 of the cover plate 11 (e.g., by laser welding), attaching the cover plate 11 with the positive electrode lower plastic plate 15a and the negative electrode lower plastic plate 15b together;
s2, respectively installing the positive pole upper plastic pad 13a and the negative pole upper plastic pad 13b on a positive pole mounting hole 111 and a negative pole mounting hole 112 of the cover plate 11;
s3, sleeving the positive pole column 12a and the negative pole column 12b with the sealing rings 18, sequentially penetrating through the through holes 151 of the positive pole lower plastic plate 15a and the negative pole lower plastic plate 15b, the positive pole column mounting hole 111 and the negative pole column mounting hole 112, and the through holes 131 of the positive pole upper plastic pad 13a and the negative pole upper plastic pad 13b, and performing pre-riveting;
s4, respectively riveting the positive pole riveting block 16a and the negative pole riveting block 16b to the upper ends of the positive pole column 12a and the negative pole column 12 b;
and S5, respectively welding the positive adapter plate 17a and the negative adapter plate 17b to the lower ends of the positive pole column 12a and the negative pole column 12b by laser, and attaching corresponding insulation sheets 19 to the inner sides of the positive adapter plate 17a and the negative adapter plate 17b to complete the assembly of the riveting top cover. The whole assembly process can be completed through an automatic assembly production line, and the assembly efficiency is high.
Referring to fig. 8 and 9, fig. 8 is a perspective view of a square-shell battery cell 100 according to the present invention, and fig. 9 is an exploded view of the square-shell battery cell 100. The square-shell battery cell 100 may include a casing 2, a battery cell module 3 and a riveting top cap 1, wherein the casing 2 has an upper end opening 21, the battery cell module 3 is loaded into the casing 2 from the upper end opening 21, and the riveting top cap 1 seals the upper end opening 21. The housing 2 is typically drawn from an aluminum plate. The structure of the cell module 3 is well known and will not be described here. The structure of the riveted cap 1 has been described above and will not be described in detail here.
The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications of the invention can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.
Claims (17)
1. The utility model provides a riveting top cap, the riveting top cap is installed on the upper end opening of the casing of square shell electricity core, its characterized in that, the riveting top cap includes:
the cover plate is provided with a positive pole mounting hole, a negative pole mounting hole and an explosion-proof sheet mounting hole positioned between the positive pole mounting hole and the negative pole mounting hole;
the explosion-proof piece is arranged on the explosion-proof piece mounting hole;
the positive pole upper plastic pad and the negative pole upper plastic pad are mounted on the upper surface of the cover plate and are provided with first through holes aligned with the positive pole mounting holes and the negative pole mounting holes;
the lower plastic plate of the positive pole and the lower plastic plate of the negative pole are attached to the lower surface of the cover plate and are provided with second through holes aligned with the mounting holes of the positive pole and the negative pole and pressure relief channels aligned with the mounting holes of the explosion-proof piece;
the positive pole and the negative pole are sleeved with sealing rings, penetrate through the second through hole, the positive pole mounting hole, the negative pole mounting hole and the first through hole in sequence and are assembled with the positive pole upper plastic pad, the negative pole upper plastic pad, the positive pole lower plastic plate and the negative pole lower plastic plate through riveting, and the positive pole and the negative pole are higher than the upper surface of the cover plate by a preset height;
the positive pole riveting block and the negative pole riveting block are riveted with the upper ends of the positive pole column and the negative pole column;
and the positive pole adapter plate and the negative pole adapter plate are fixedly connected to the lower ends of the positive pole column and the negative pole column.
2. The riveted top cap of claim 1, wherein the cover plate, the positive and negative posts and the positive and negative riveting blocks are made of aluminum or an aluminum alloy.
3. The riveted top cap of claim 1, wherein the positive post mounting hole and the negative post mounting hole are counter bores, and the positive plastic-on-positive pad and the negative plastic-on-negative pad are embedded in the positive post mounting hole and the negative post mounting hole.
4. The riveted top cap of claim 3, wherein the positive and negative post mounting holes have a larger square groove upper portion and a smaller circular hole lower portion, the positive and negative upper plastic pads having a shape and size that corresponds to the shape and size of the square groove upper portion.
5. The riveted cap of claim 4, wherein the positive and negative riveting blocks are partially embedded in the positive and negative plastic pads.
6. The riveting top cover of claim 1, wherein a plurality of positioning columns are formed on the upper surfaces of the positive lower plastic plate and the negative lower plastic plate, a plurality of blind holes corresponding to the positioning columns in a one-to-one manner are formed on the lower surface of the cover plate, and the positioning columns are engaged in the blind holes.
7. The riveted top cover of claim 6, wherein the positive plastic lower plate and the negative plastic lower plate are connected with a through hole in a matched manner through one of the positioning columns.
8. A riveted cap according to claim 1, characterized in that the predetermined height is between 2 and 5 mm.
9. The riveted top cap of claim 1, characterized in that the positive and negative posts are identical in structure and each comprise a square bottom and a cylinder extending upward from the center of the square bottom.
10. A riveted cap according to claim 9, in which the post comprises a lower portion of larger diameter and an upper portion of smaller diameter.
11. A riveted cap according to claim 10, wherein the sealing ring is fitted over the lower part of the post.
12. The riveted top cap of claim 9, wherein the positive and negative adapter plates are laser welded to the square bottom of the positive and negative posts, respectively.
13. The riveted cap of claim 12, wherein the positive adapter and the negative adapter are identical in structure, L-shaped, mounted in mirror symmetry.
14. The riveted cap of claim 13, wherein insulating sheets are affixed to the inner faces of the positive and negative adapter plates.
15. A riveted cap according to claim 1, characterized in that the sealing ring is a fluoroelastomer sealing ring or a ceramic sealing ring.
16. The riveted cap of claim 1, wherein the explosion-proof sheet mounting hole is a racetrack shaped hole and has a PET protective film affixed to its upper end.
17. A square-shelled electrical cell comprising a casing having an upper end opening from which the cell module is loaded into the casing, a cell module and a top cover closing the upper end opening, characterized in that the top cover is a riveted top cover according to any one of claims 1 to 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023345505.1U CN213716967U (en) | 2020-12-31 | 2020-12-31 | Riveting top cap and square-shell battery cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023345505.1U CN213716967U (en) | 2020-12-31 | 2020-12-31 | Riveting top cap and square-shell battery cell |
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| CN213716967U true CN213716967U (en) | 2021-07-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751113A (en) * | 2020-12-31 | 2021-05-04 | 远景动力技术(江苏)有限公司 | Riveting top cover, assembling method thereof and square-shell battery cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751113A (en) * | 2020-12-31 | 2021-05-04 | 远景动力技术(江苏)有限公司 | Riveting top cover, assembling method thereof and square-shell battery cell |
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