CN112713342A - Top cover, assembling method thereof and square-shell battery cell - Google Patents
Top cover, assembling method thereof and square-shell battery cell Download PDFInfo
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- CN112713342A CN112713342A CN202011638573.9A CN202011638573A CN112713342A CN 112713342 A CN112713342 A CN 112713342A CN 202011638573 A CN202011638573 A CN 202011638573A CN 112713342 A CN112713342 A CN 112713342A
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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
Abstract
The invention relates to a top cover, an assembling method thereof and a square-shell battery cell. This 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 positive pole column and the negative pole column are respectively arranged on the positive pole column mounting hole and the negative pole column mounting hole through the positive pole upper plastic sleeve and the negative pole upper plastic sleeve and are higher than the upper surface of the cover plate by a preset height; the explosion-proof sheet is arranged on the explosion-proof sheet mounting hole; the lower plastic plate is attached to the lower surface of the cover plate and is provided with a first through hole and a second through hole which are respectively aligned with the positive pole mounting hole and the negative pole mounting hole and a pressure relief channel which is aligned with the explosion-proof sheet mounting hole; and the positive pole adapter plate and the negative pole adapter plate are respectively provided with a first protrusion and a second protrusion, and the first protrusion and the second protrusion respectively penetrate through the first through hole and the second through hole to be connected to the positive pole and the negative pole. The top cover has the advantages of simple structure, low cost, high assembly efficiency in groups, small welding resistance and good stability.
Description
Technical Field
The invention relates to the technical field of power batteries, in particular to a top cover, an assembling method thereof and a square-shell battery cell.
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 terminal post of the traditional square-shell battery cell is of a bolt structure, the structure is complex, the assembly efficiency in groups 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 lower plastic and the adapter plate inside the traditional top cover occupy large space;
4. the utmost point post of traditional top cap is higher, and occupation space is big, occupies the great space in mould top usually in the assembly of battery module, causes the not high scheduling problem of module group efficiency.
Disclosure of Invention
The invention aims to provide a top cover and a square-shell battery cell which are simple in structure, low in cost and easy to assemble in a module.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
according to an aspect of the present invention, there is provided a top cover mounted on an upper end opening of a case of a square-casing battery cell, wherein the top cover 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 positive pole column and the negative pole column are respectively installed on the positive pole column installation hole and the negative pole column installation hole through a positive pole upper plastic sleeve and a negative pole upper plastic sleeve and are higher than the upper surface of the cover plate by a preset height;
the explosion-proof piece is arranged on the explosion-proof piece mounting hole;
a lower plastic plate attached to a lower surface of the cover plate, the lower plastic plate having first and second through holes aligned with the positive and negative post mounting holes, respectively, and a pressure relief channel aligned with the rupture disk mounting hole;
the positive pole adapter plate and the negative pole adapter plate are respectively provided with a first protrusion and a second protrusion, and the first protrusion and the second protrusion respectively penetrate through the first through hole and the second through hole to be connected to the positive pole column and the negative pole column.
In a preferred embodiment, the cover plate is a smooth aluminum sheet, which is formed by stamping.
In a preferred embodiment, the positive pole mounting hole and the negative pole mounting hole are counter bores.
In a preferred embodiment, the lower plastic plate is sized to fit within the upper opening.
In a preferred embodiment, a plurality of positioning columns are formed on the upper surface of the 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, the positioning columns are engaged in the blind holes, and the peripheries of the first through hole and the second through hole protrude upwards and are respectively engaged on the hole walls of the positive pole mounting hole and the negative pole mounting hole.
In a preferred embodiment, the lower plastic plate is integrally preformed from plastic.
In a preferred embodiment, the positive electrode plastic sleeve and the negative electrode plastic sleeve are formed on the positive electrode pillar and the negative electrode pillar by injection molding.
In a preferred embodiment, the positive and negative posts are made of aluminum, copper, or a copper-aluminum alloy.
In a preferred embodiment, the positive electrode adaptor piece and the negative electrode adaptor piece are manufactured by friction welding or explosion welding.
In a preferred embodiment, the predetermined height is 2-5 mm.
In a preferred embodiment, each of the positive electrode tab and the negative electrode tab includes a U-shaped cover plate and a connecting portion extending from a bottom of the U-shaped cover plate in a direction away from the two arms, and the first protrusion and the second protrusion are formed on an upper surface of the connecting portion.
In a preferred embodiment, the first protrusion and the second protrusion are in a circular buckle shape, and the bottom ends of the positive pole and the negative pole are provided with elastic buckle holes, so that the first protrusion and the second protrusion are detachably buckled at the bottom ends of the positive pole and the negative pole.
In a preferred embodiment, the explosion-proof sheet mounting hole is a runway-shaped hole, and a protective film is attached to the upper end of the explosion-proof sheet mounting hole.
According to another aspect of the invention, a square-shell battery cell is further provided, which includes a casing, a battery cell module and a top cover, the casing has an upper end opening, the battery cell module is installed into the casing from the upper end opening, and the top cover closes the upper end opening, wherein the top cover is the top cover as described above.
According to another aspect of the present invention, there is provided a method for assembling a top cover, wherein the top cover is the top cover as described above, the 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 and the lower plastic plate are attached together;
s2, respectively installing the positive pole column and the negative pole column on a positive pole column installation hole and a negative pole column installation hole of the cover plate;
s3, mounting the positive pole adapter plate and the negative pole adapter plate together with the positive pole column and the negative pole column;
s4, placing the component formed after S3 in an integral injection molding cavity of a mold;
and S5, performing injection molding to obtain an anode plastic sleeve and a cathode plastic sleeve which are formed on the anode post and the cathode post, and finishing the assembly of the top cover.
The invention adopts the technical proposal, has the advantages that,
1. the square-shell battery cell has the advantages of simple structure, low cost, high assembly efficiency in groups, small welding resistance and good stability;
2. the air tightness of the pole of the square-shell battery cell is good, and the durability is long;
3. the internal space of the battery cell is large, and the energy density of the battery cell is high;
4. the square-shell battery cell pole column part occupies a small height, so that the utilization rate of the internal space of the module is improved, and the overall energy density is improved.
Drawings
Fig. 1 is a perspective view of the top cover of the present invention.
FIG. 2 is an exploded view of the overcap shown in FIG. 1;
FIG. 3 is a top view of the overcap shown in FIG. 1;
FIG. 4 is a cross-sectional view of the overcap taken along line A-A in FIG. 3;
FIG. 5 is a bottom perspective view of the lid panel of the overcap shown in FIG. 2;
FIG. 6 is a bottom perspective view of the lower plastic plate of the top cap shown in FIG. 2;
fig. 7 is a perspective view of a square-shelled cell of the invention;
fig. 8 is an exploded view of the square-shelled cell shown in fig. 7.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present 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 purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.
Referring to fig. 1, 2, 7 and 8, fig. 1 and 7 are perspective views of a square-casing battery cell 100 and a top cover 1 thereof according to an embodiment of the invention, and fig. 2 and 8 are exploded views of the square-casing battery cell 100 and the top cover 1 thereof. The top cover 1 is mounted on the upper end opening 21 of the case 2 of the square-shell battery cell 100. The top cover 1 may include a cover plate 11, a positive post 12, a negative post 13, a positive plastic cover 14, a negative plastic cover 15, an explosion-proof sheet 16, a lower plastic plate 17, a positive adaptor sheet 18, a negative adaptor sheet 19, 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. In the illustrated embodiment, the positive post mounting hole 111 and the negative post mounting hole 112 are both counterbored, i.e., have an upper portion with a larger aperture and a lower portion with a smaller aperture.
Positive and negative posts 12 and 13 are mounted on positive and negative post mounting holes 111 and 112 through positive and negative plastic caps 14 and 15, respectively, and are raised a predetermined height above the upper surface of cover plate 11. The predetermined height is generally small, i.e., positive and negative posts 12 and 13 are much lower in height than existing posts, which may increase battery body space and cell energy density. Preferably, the predetermined height is 2-5 mm. More preferably, the predetermined height is about 3 mm. Positive post 12 and negative post 13 are typically made of a good conductor of metal. Preferably, the positive electrode post 12 and the negative electrode post 13 may be an aluminum electrode post, a copper aluminum electrode post, or the like. Preferably, negative electrode tab 13 may be made by friction welding or explosion welding.
Positive electrode plastic sleeve 14 and negative electrode plastic sleeve 15 are formed on positive electrode post 12 and negative electrode post 13 by injection molding. It should be understood that the positive and negative plastic covers 14 and 15 may be pre-formed and then sleeved on the positive and negative posts 12 and 13 to protect and insulate the posts from the cover plate 11. Positive post 12 and negative post 13 are slightly higher (e.g., 0.5 mm) than positive plastic cover 14 and negative plastic cover 15 to facilitate their connection to the outside.
As shown in fig. 1, 2 and 5, the rupture disk 16 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 16, a protective film 160 is attached to the upper end of the rupture disk mounting hole 113. The explosion-proof sheet 16 may rupture when the pressure inside the square-casing battery cell 100 is greater than a threshold value (e.g., 0.6MPa), so as to prevent the square-casing battery cell 100 from exploding. The construction of the rupture disc 16 is well known and will not be described here. The rupture disk mounting hole 113 is designed according to the shape of the rupture disk 16. In the illustrated embodiment, the rupture disk mounting holes 113 are racetrack shaped holes.
As shown in fig. 1 to 6, a lower plastic plate 17 is attached to the lower surface of the cover plate 11. Specifically, a plurality of positioning columns 174 (two rows of 6 are shown) are formed on the upper surface of the lower plastic plate 17, and accordingly, a plurality of blind holes 114 corresponding to the positioning columns 174 in a one-to-one correspondence are formed on the lower surface of the cover plate 11, and the lower plastic plate 17 is attached to the lower surface of the cover plate 11 by the positioning columns 174 being engaged in the blind holes 114. The diameter of the locating post 174 may be slightly larger than the blind hole 114 to achieve an interference fit fixation. The lower plastic plate 17 has a size corresponding to the size of the upper opening 21 of the housing 2 and smaller than the size of the cover plate 11, so that the lower plastic plate 17 can be embedded in the housing 2 to achieve the mounting of the top cover 1 on the housing 2. The lower plastic plate 17 has first and second through holes 171 and 172 aligned with the positive and negative post mounting holes 111 and 112, respectively, and a pressure relief channel 173 aligned with the rupture disk mounting hole 113. Wherein the peripheries of the first through hole 171 and the second through hole 172 are protruded upward and engaged with the hole walls of the positive post mounting hole 111 and the negative post mounting hole 112, respectively, to insulate the positive electrode tab 18 and the negative electrode tab 19 from the cover plate 11. The pressure release channel 173 is a rectangular groove with a plurality of rows of through holes 1731 formed in the bottom thereof. Rectangular supporting parts 174 respectively extend downwards from two ends and the middle of the lower plastic plate 17, and rectangular grooves with upward openings are formed in the rectangular supporting parts. Wherein the middle rectangular support is a pressure relief channel 173.
The positive electrode adaptor piece 18 and the negative electrode adaptor piece 19 have the same shape and structure. In the present embodiment, each of the positive electrode interposer 18 and the negative electrode interposer 19 includes a U-shaped cover plate 181, 191 and a connecting portion 182, 192 extending from the bottom of the U-shaped cover plate 181, 191 in a direction away from the two arms. The upper surfaces of the connecting portions 182 and 192 are respectively provided with a first protrusion 183 and a second protrusion 193, and the first protrusion 183 and the second protrusion 193 are respectively connected to the positive pole 12 and the negative pole 13 through the first through hole 171 and the second through hole 172 of the lower plastic plate 17.
In this embodiment, first protrusion 183 and second protrusion 193 are rounded, and the bottom ends of positive post 12 and negative post 13 are provided with elastic fastening holes. The first and second protrusions 183 and 193 are detachably fastened to the bottom ends of the positive and negative posts so that the positive and negative tabs 18 and 19 are fixedly connected to the positive and negative posts 12 and 13, respectively.
As shown in fig. 7 and 8, a square-casing battery cell 100 includes a casing 2, a cell module 3, and a top cover 1, wherein the casing 2 has an upper end opening 21, the cell module 3 is loaded into the casing 2 from the upper end opening 21, and the top cover 1 closes 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 top cover 1 has been described above and will not be described in detail.
Furthermore, in an embodiment of the present invention, there is also provided an assembling method of the top cover 1 as described above. The assembly method may include the steps of:
s1. after the explosion-proof sheet 16 is mounted in the explosion-proof sheet mounting hole 113 of the cover plate 11, attaching the cover plate 11 and the lower plastic plate 17 together, specifically by engaging the positioning posts 174 in the blind holes 114 of the lower surface of the cover plate 11;
s2, respectively installing the positive pole column 12 and the negative pole column 13 on a positive pole column installation hole 111 and a negative pole column installation hole 112 of the cover plate 11;
s3, mounting the positive pole adapter plate 18 and the negative pole adapter plate 19 together with the positive pole column 12 and the negative pole column 13, and specifically, respectively connecting the first protrusion 183 and the second protrusion 193 to the bottom ends of the positive pole column 12 and the negative pole column 13 through the first through hole 171 and the second through hole 172 of the lower plastic plate 17;
s4, placing the component formed after S3 in an integral injection molding cavity of a mold;
and S5, performing injection molding to obtain an anode plastic sleeve 14 and a cathode plastic sleeve 15 formed on the anode post 12 and the cathode post 13, and finishing the assembly of the top cover 1. The whole assembly process can be completed through an automatic assembly production line, and the assembly efficiency is high.
While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that various changes and modifications of the invention can be effected therein by those skilled in the art after reading the above teachings of the invention. Such equivalents are intended to fall within the scope of the claims appended hereto.
Claims (15)
1. The utility model provides a top cap, the top cap is installed on the upper end opening of the casing of square shell electricity core, its characterized in that, the 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 positive pole column and the negative pole column are respectively installed on the positive pole column installation hole and the negative pole column installation hole through a positive pole upper plastic sleeve and a negative pole upper plastic sleeve and are higher than the upper surface of the cover plate by a preset height;
the explosion-proof piece is arranged on the explosion-proof piece mounting hole;
a lower plastic plate attached to a lower surface of the cover plate, the lower plastic plate having first and second through holes aligned with the positive and negative post mounting holes, respectively, and a pressure relief channel aligned with the rupture disk mounting hole;
the positive pole adapter plate and the negative pole adapter plate are respectively provided with a first protrusion and a second protrusion, and the first protrusion and the second protrusion respectively penetrate through the first through hole and the second through hole to be connected to the positive pole column and the negative pole column.
2. The overcap of claim 1, wherein the cover sheet is a plain aluminum sheet formed by stamping.
3. The header of claim 1, wherein the positive post mounting hole and the negative post mounting hole are counterbored holes.
4. The overcap of claim 1, wherein the lower plastic plate is sized to fit within the upper end opening.
5. The top cover according to claim 1, wherein a plurality of positioning posts are formed on the upper surface of the lower plastic plate, a plurality of blind holes corresponding to the positioning posts one to one are formed on the lower surface of the cover plate, the positioning posts are engaged in the blind holes, and the peripheries of the first through hole and the second through hole are protruded upward and engaged with the hole walls of the positive post mounting hole and the negative post mounting hole, respectively.
6. The overcap of claim 4 or claim 5, wherein the lower plastic plate is integrally preformed from plastic.
7. The cap of claim 1, wherein the positive pole plastic sleeve and the negative pole plastic sleeve are formed on the positive pole post and the negative pole post by injection molding.
8. The cap of claim 1, wherein the positive post and the negative post are made of aluminum, copper, or a copper aluminum alloy.
9. The cap of claim 1, wherein the negative post is made by friction welding or explosion welding.
10. The overcap of claim 1, wherein the predetermined height is in the range of 2 mm to 5 mm.
11. The top cap of claim 1, wherein the positive adapter plate and the negative adapter plate each comprise a U-shaped cover plate and a connecting portion extending from a bottom of the U-shaped cover plate in a direction away from the two arms, the first protrusion and the second protrusion being formed on an upper surface of the connecting portion.
12. The top cap according to claim 1 or 10, wherein the first protrusion and the second protrusion are in a circular buckle shape, and the bottom ends of the positive post and the negative post are provided with elastic buckle holes, so that the first protrusion and the second protrusion are detachably buckled to the bottom ends of the positive post and the negative post.
13. The top cover of claim 1, wherein the explosion-proof sheet mounting hole is a racetrack shaped hole and has a protective film adhered to an upper end thereof.
14. A square-shelled electrical cell comprising a housing having an upper end opening, a cell module fitted into the housing from the upper end opening, and a top cover closing the upper end opening, wherein the top cover is the top cover of any of claims 1-13.
15. A method of assembling a top cover according to claim 1, wherein the top cover comprises 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 and the lower plastic plate are attached together;
s2, respectively installing the positive pole column and the negative pole column on a positive pole column installation hole and a negative pole column installation hole of the cover plate;
s3, mounting the positive pole adapter plate and the negative pole adapter plate together with the positive pole column and the negative pole column;
s4, placing the component formed after S3 in an integral injection molding cavity of a mold;
and S5, performing injection molding to obtain an anode plastic sleeve and a cathode plastic sleeve which are formed on the anode post and the cathode post, and finishing the assembly of the top cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011638573.9A CN112713342B (en) | 2020-12-31 | 2020-12-31 | Top cover, assembly method thereof and square-shell battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011638573.9A CN112713342B (en) | 2020-12-31 | 2020-12-31 | Top cover, assembly method thereof and square-shell battery cell |
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| Publication Number | Publication Date |
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| CN112713342A true CN112713342A (en) | 2021-04-27 |
| CN112713342B CN112713342B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011638573.9A Active CN112713342B (en) | 2020-12-31 | 2020-12-31 | Top cover, assembly method thereof and square-shell battery cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115347288A (en) * | 2021-05-13 | 2022-11-15 | 荣盛盟固利新能源科技有限公司 | Battery cover plate and power battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208622794U (en) * | 2018-08-01 | 2019-03-19 | 宁德时代新能源科技股份有限公司 | Secondary cell and its cap assembly |
| CN109659453A (en) * | 2017-10-10 | 2019-04-19 | 宁德时代新能源科技股份有限公司 | Secondary cell's top cap subassembly and secondary cell |
| CN209496906U (en) * | 2019-04-01 | 2019-10-15 | 宁德时代新能源科技股份有限公司 | Cap assembly and secondary cell |
| CN110635073A (en) * | 2019-10-23 | 2019-12-31 | 江西赣锋电池科技有限公司 | Power battery top cover and manufacturing method thereof |
| CN211629143U (en) * | 2020-01-14 | 2020-10-02 | 靖江市东达新能源科技有限公司 | Power battery top cover plate assembly |
-
2020
- 2020-12-31 CN CN202011638573.9A patent/CN112713342B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659453A (en) * | 2017-10-10 | 2019-04-19 | 宁德时代新能源科技股份有限公司 | Secondary cell's top cap subassembly and secondary cell |
| CN208622794U (en) * | 2018-08-01 | 2019-03-19 | 宁德时代新能源科技股份有限公司 | Secondary cell and its cap assembly |
| CN209496906U (en) * | 2019-04-01 | 2019-10-15 | 宁德时代新能源科技股份有限公司 | Cap assembly and secondary cell |
| CN110635073A (en) * | 2019-10-23 | 2019-12-31 | 江西赣锋电池科技有限公司 | Power battery top cover and manufacturing method thereof |
| CN211629143U (en) * | 2020-01-14 | 2020-10-02 | 靖江市东达新能源科技有限公司 | Power battery top cover plate assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115347288A (en) * | 2021-05-13 | 2022-11-15 | 荣盛盟固利新能源科技有限公司 | Battery cover plate and power battery |
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| CN112713342B (en) | 2023-09-01 |
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