CN113725533A - New energy battery apron assembly subassembly - Google Patents
New energy battery apron assembly subassembly Download PDFInfo
- Publication number
- CN113725533A CN113725533A CN202111029868.0A CN202111029868A CN113725533A CN 113725533 A CN113725533 A CN 113725533A CN 202111029868 A CN202111029868 A CN 202111029868A CN 113725533 A CN113725533 A CN 113725533A
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- China
- Prior art keywords
- cover plate
- boss
- groove
- new energy
- energy battery
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/567—Terminals characterised by their manufacturing process by fixing means, e.g. screws, rivets or bolts
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention belongs to the technical field of new energy batteries, and particularly relates to a new energy battery cover plate assembly component. The invention aims to provide a new energy battery cover plate assembly component for improving the safety of a new energy battery. A new energy battery cover plate assembly component comprises a cover plate body, a lower plastic support, a connecting part, a pole column, a metal fixing ring, a plastic fixing piece and a sealing piece; the two ends of the cover plate body are both provided with connecting parts, the top of each connecting part is provided with a first groove, a second groove is arranged below the first groove, and the middle of the second groove is provided with a first through hole; the upper portion of utmost point post is first boss, and first boss bottom is equipped with the middle part flange, and middle part flange bottom is equipped with first boss down. The invention simplifies the process flow of the new energy battery cover plate assembly while ensuring the structural reliability, reduces the assembly process difficulty and reduces the consumption of key materials.
Description
Technical Field
The invention belongs to the technical field of new energy batteries, and particularly relates to a new energy battery cover plate assembly component.
Background
In recent years, under the promotion of the concept of 'green sustainable development', the new energy automobile market is continuously and rapidly expanded, and the new energy battery market is driven to rapidly grow. At present, a square aluminum shell structure is generally adopted by a new energy battery and comprises a shell and a battery cover plate, wherein the battery cover plate is used for providing a closed space for the new energy battery and is also used as an energy transmission medium of the new energy battery, and the structure of the battery cover plate directly influences the reliability and the manufacturing cost of the battery pack.
The traditional cover plate structure pole adopts a copper-aluminum friction welding technology, the fixed cover plate and the pole are molded in the PPS material mold, the risk that the copper-aluminum joint surface of the pole is broken and the pole and the cover plate fall off exists, and the safety in the use process of the new energy battery is reduced.
Disclosure of Invention
The invention aims to provide a new energy battery cover plate assembly component for improving the safety of a new energy battery.
The invention is achieved by the following specific technical means:
a new energy battery cover plate assembly component comprises a cover plate body, a lower plastic support, a connecting part, a pole column, a metal fixing ring, a plastic fixing piece and a sealing piece; the two ends of the cover plate body are both provided with connecting parts, the top of each connecting part is provided with a first groove, a second groove is arranged below the first groove, and the middle of the second groove is provided with a first through hole; the upper part of the pole is provided with a first upper boss, the bottom of the first upper boss is provided with a middle flange, the bottom of the middle flange is provided with a first lower boss, and the outer edge of the middle flange is uniformly provided with a plurality of notches; the upper part of the plastic fixing piece is provided with a second upper boss, the lower part of the plastic fixing piece is provided with a second lower boss, the middle parts of the second upper boss and the second lower boss are provided with through second through holes, and the second through holes are stepped holes with narrow upper parts and wide lower parts and are used for connecting the polar columns; a plurality of convex blocks are uniformly distributed on the inner side of the joint of the second upper boss and the second lower boss along the circumferential direction, and the convex blocks are clamped and matched with the notches; the middle part of the second upper boss is provided with a clamping groove for clamping the metal fixing ring; a second lower boss on the plastic fixing piece is clamped in the second groove, and the metal fixing ring is clamped in the first groove; a sealing element is arranged between the second lower boss and the first lower boss; the bottom of the cover plate body is connected with a lower plastic support used for isolating a battery cell; concave holes are formed in two ends of the lower plastic support and are correspondingly matched with the connecting parts; and the front side edge and the rear side edge of the top part are respectively provided with a plurality of connecting pieces for connecting the cover plate body; the middle parts of the cover plate body and the lower plastic support are provided with an explosion-proof valve structure.
Furthermore, a plurality of studs are uniformly distributed on the second lower boss along the circumferential direction and are correspondingly embedded with the embedding holes formed in the second groove.
Furthermore, a raised mark is arranged at the top of the second upper boss and used for marking the anode or the cathode.
Further, the bottom edge of the second lower boss is chamfered, and the bottom chamfered inner corner inside the second groove is matched with the second lower boss.
Furthermore, the edge of the first through hole is provided with a convex ring, and the middle part of the sealing element is provided with a notch which is clamped with the convex ring.
Furthermore, the outer diameter of the first lower boss is smaller than that of the first through hole, and the bottom end of the first lower boss does not exceed the first through hole; the top of the first upper boss exceeds the top of the plastic fixing piece.
Furthermore, the connecting piece is a bulge with a wide upper part and a narrow lower part, and is matched and clamped with a connecting hole formed in the bottom of the cover plate body.
Compared with the prior art, the invention has the following beneficial effects:
the invention ensures the reliability of the structure, simplifies the process flow of the cover plate assembly of the new energy battery, reduces the difficulty of the assembly process, reduces the consumption of key materials, is beneficial to improving the assembly efficiency of the top cover, reducing the production cost and improving the safety of the new energy battery.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic diagram of the explosive structure of the present invention.
Fig. 3 is a schematic perspective view of the connecting portion of the present invention.
Fig. 4 is a schematic perspective view of a pole of the present invention.
Fig. 5 is a schematic perspective view of the plastic fastener of the present invention.
Fig. 6 is a schematic sectional view of the connecting portion of the present invention.
FIG. 7 is a schematic cross-sectional view of the plastic fastener of the present invention.
FIG. 8 is a schematic perspective view of a lower plastic frame according to the present invention.
The labels in the figures are: 1-cover plate body, 2-lower plastic support, 21-concave hole, 22-connecting piece, 3-connecting part, 31-first groove, 32-second groove, 33-embedding hole, 34-convex ring, 35-first through hole, 4-pole, 41-first upper boss, 42-middle flange, 43-notch, 44-first lower boss, 5-metal fixing ring, 6-plastic fixing piece, 61-second upper boss, 62-second through hole, 63-lug, 64-second lower boss, 65-clamping groove, 66-clamping nail, 67-marking part, 7-sealing piece and 8-explosion-proof valve structure.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Examples
A new energy battery cover plate assembly component is shown in figures 1-8 and comprises a cover plate body 1, a lower plastic support 2, a connecting part 3, a pole 4, a metal fixing ring 5, a plastic fixing part 6 and a sealing part 7; the two ends of the cover plate body 1 are both provided with connecting parts 3, the top of each connecting part 3 is provided with a first groove 31, a second groove 32 is arranged below each first groove 31, and the middle of each second groove 32 is provided with a first through hole 35; the upper part of the pole 4 is provided with a first upper boss 41, the bottom of the first upper boss 41 is provided with a middle flange 42, the bottom of the middle flange 42 is provided with a first lower boss 44, and the outer edge of the middle flange 42 is uniformly provided with a plurality of notches 43; the upper part of the plastic fixing piece 6 is provided with a second upper boss 61, the lower part is provided with a second lower boss 64, the middle parts of the second upper boss 61 and the second lower boss 64 are provided with a through second through hole 62, and the second through hole 62 is a stepped hole with a narrow upper part and a wide lower part and is used for connecting the pole 4; a plurality of convex blocks 63 are uniformly distributed on the inner side of the joint of the second upper boss 61 and the second lower boss 64 along the circumferential direction, and the convex blocks 63 are in clamping fit with the notches 43; the middle part of the second upper boss 61 is provided with a clamping groove 65 for clamping the metal fixing ring 5; the second lower boss 64 on the plastic fixing piece 6 is clamped in the second groove 32, and the metal fixing ring 5 is clamped in the first groove 31; a sealing element 7 is arranged between the second lower boss 64 and the first lower boss 44; the bottom of the cover plate body 1 is connected with a lower plastic support 2 for isolating a battery cell; concave holes 21 are formed at two ends of the lower plastic support 2 and are correspondingly matched with the connecting parts 3; and the front and back sides of the top are provided with a plurality of connecting pieces 22 for connecting the cover plate body 1; the middle parts of the cover plate body 1 and the lower plastic support 2 are provided with an explosion-proof valve structure 8.
The second lower boss 64 is circumferentially and uniformly provided with a plurality of studs 66, and the studs are correspondingly embedded in the insertion holes 33 formed in the second groove 32.
Wherein, the top of the second upper boss 61 is provided with a raised mark 67 for marking the anode or cathode.
Wherein, the bottom edge of the second lower boss 64 is chamfered, and the bottom chamfer inside the second groove 32 is matched with the second lower boss 64.
Wherein, the edge of the first through hole 35 is provided with a convex ring 34, and the middle part of the sealing element 7 is provided with a notch which is clamped with the convex ring 34.
Wherein, the outer diameter of the first lower boss 44 is smaller than the first through hole 35, and the bottom end thereof does not exceed the first through hole 35; the top of the first upper projection 41 extends beyond the top of the plastic fixing member 6.
Wherein, the connecting piece 22 is a bulge with a wide upper part and a narrow lower part, and is matched and clamped with a connecting hole arranged at the bottom of the cover plate body 1.
The bottom end of the first lower boss 44 on the post 4 does not completely penetrate through the first through hole 35 in the center of the second groove 32, and the top end of the first upper boss 41 on the post 4 is higher than the highest position of the upper surface of the cover plate body 1; the sealing element 7 is fixed in the second groove 32, is positioned between the second lower boss 64 at the bottom of the plastic fixing element 6 and the first lower boss 44 at the bottom of the pole 4 and is used for sealing between the cover plate body 1 and the pole 4, and a notch is formed in the middle of the sealing element 7 and is clamped with the convex ring 34, so that the sealing element 7 is connected more firmly; the metal fixing ring 5 is a plane circular ring with a penetrating middle, one side of the metal fixing ring 5 is installed on the side wall of the first groove 31, and the other side of the metal fixing ring is clamped and connected in the connecting groove, so that the pole 4 cannot be separated from the cover plate body 1 in the use process of the battery; the plastic fixing member 6 is used for connecting and fixing the metal fixing ring 5, the pole 4 and the cover plate body 1, the plastic fixing member 6 is respectively embedded through the embedded nail 66 and the embedded hole 33, and is clamped through the convex block 63 and the notch 43, so that the pole 4 is fixed on the cover plate body 1 without rotating and falling off, meanwhile, the plastic fixing member 6 isolates the metal fixing ring 5 from the pole 4, insulation can be realized between the pole 4 and the cover plate body 1, or a semi-conduction function can be realized by adding conductive particles in the plastic fixing member 6. The lower plastic insulation support is arranged at the bottom of the cover plate body 1, so that the battery cover plate is isolated from the battery core.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (7)
1. A new energy battery cover plate assembly component is characterized by comprising a cover plate body (1), a lower plastic support (2), a connecting part (3), a pole (4), a metal fixing ring (5), a plastic fixing part (6) and a sealing part (7); the two ends of the cover plate body (1) are respectively provided with a connecting part (3), the top of each connecting part (3) is provided with a first groove (31), a second groove (32) is arranged below each first groove (31), and the middle of each second groove (32) is provided with a first through hole (35); the upper part of the pole post (4) is provided with a first upper boss (41), the bottom of the first upper boss (41) is provided with a middle flange (42), the bottom of the middle flange (42) is provided with a first lower boss (44), and the outer edge of the middle flange (42) is uniformly provided with a plurality of notches (43); the upper part of the plastic fixing piece (6) is provided with a second upper boss (61), the lower part of the plastic fixing piece is provided with a second lower boss (64), the middle parts of the second upper boss (61) and the second lower boss (64) are provided with a through second through hole (62), and the second through hole (62) is a stepped hole with a narrow upper part and a wide lower part and is used for connecting the pole (4); a plurality of convex blocks (63) are uniformly distributed on the inner side of the joint of the second upper boss (61) and the second lower boss (64) along the circumferential direction, and the convex blocks (63) are in clamping fit with the notches (43); the middle part of the second upper boss (61) is provided with a clamping groove (65) for clamping the metal fixing ring (5); a second lower boss (64) on the plastic fixing piece (6) is clamped in the second groove (32), and the metal fixing ring (5) is clamped in the first groove (31); a sealing element (7) is arranged between the second lower boss (64) and the first lower boss (44); the bottom of the cover plate body (1) is connected with a lower plastic support (2) for isolating a battery cell; concave holes (21) are formed in the two ends of the lower plastic support (2) and are correspondingly matched with the connecting parts (3); and the front side edge and the rear side edge of the top part are respectively provided with a plurality of connecting pieces (22) for connecting the cover plate body (1); the middle parts of the cover plate body (1) and the lower plastic support (2) are provided with an explosion-proof valve structure (8).
2. The new energy battery cover plate assembly component as claimed in claim 1, wherein a plurality of studs (66) are uniformly distributed on the second lower boss (64) along the circumferential direction and are correspondingly embedded in the embedding holes (33) formed in the second groove (32).
3. The new energy battery cover plate assembly component as claimed in claim 2, wherein the top of the second upper boss (61) is provided with a raised mark (67) for marking the positive pole or the negative pole.
4. The new energy battery cover plate assembly component as claimed in claim 3, wherein the bottom edge of the second lower boss (64) is chamfered, and the bottom chamfer inside the second groove (32) is matched with the second lower boss (64).
5. The new energy battery cover plate assembly component as claimed in claim 4, wherein a protruding ring (34) is arranged at the edge of the first through hole (35), and a notch is formed in the middle of the sealing member (7) and is clamped with the protruding ring (34).
6. The new energy battery cover plate assembly component as claimed in claim 5, wherein the first lower boss (44) has an outer diameter smaller than the first through hole (35) and a bottom end not exceeding the first through hole (35); the top of the first upper boss (41) exceeds the top of the plastic fixing piece (6).
7. The new energy battery cover plate assembly component as claimed in claim 6, wherein the connecting piece (22) is a protrusion with a wide upper part and a narrow lower part, and is matched and clamped with a connecting hole formed in the bottom of the cover plate body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111029868.0A CN113725533B (en) | 2021-09-03 | 2021-09-03 | New energy battery cover plate assembly component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111029868.0A CN113725533B (en) | 2021-09-03 | 2021-09-03 | New energy battery cover plate assembly component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113725533A true CN113725533A (en) | 2021-11-30 |
| CN113725533B CN113725533B (en) | 2023-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111029868.0A Active CN113725533B (en) | 2021-09-03 | 2021-09-03 | New energy battery cover plate assembly component |
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| Country | Link |
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| CN (1) | CN113725533B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284607A (en) * | 2021-12-17 | 2022-04-05 | 厦门海辰新能源科技有限公司 | Top cap subassembly, battery and energy memory |
| EP4312303A1 (en) * | 2022-07-25 | 2024-01-31 | Prime Planet Energy & Solutions, Inc. | Battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301105A (en) * | 2018-10-30 | 2019-02-01 | 江苏塔菲尔新能源科技股份有限公司 | A kind of assembling structure and its assembly method of power battery top cover |
| CN212342703U (en) * | 2020-06-18 | 2021-01-12 | 江西百思利新能源科技有限公司 | Secondary battery pole assembly and secondary battery top cover thereof |
| CN212485427U (en) * | 2020-06-28 | 2021-02-05 | 湖北亿纬动力有限公司 | Battery top cap and power battery |
| CN212991173U (en) * | 2020-10-13 | 2021-04-16 | 厦门海辰新能源科技有限公司 | Independent pole assembling structure of secondary battery |
| CN213026404U (en) * | 2020-08-19 | 2021-04-20 | 上海瑞浦青创新能源有限公司 | Power battery pole column assembly, power battery top cover and power battery |
-
2021
- 2021-09-03 CN CN202111029868.0A patent/CN113725533B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301105A (en) * | 2018-10-30 | 2019-02-01 | 江苏塔菲尔新能源科技股份有限公司 | A kind of assembling structure and its assembly method of power battery top cover |
| CN212342703U (en) * | 2020-06-18 | 2021-01-12 | 江西百思利新能源科技有限公司 | Secondary battery pole assembly and secondary battery top cover thereof |
| CN212485427U (en) * | 2020-06-28 | 2021-02-05 | 湖北亿纬动力有限公司 | Battery top cap and power battery |
| CN213026404U (en) * | 2020-08-19 | 2021-04-20 | 上海瑞浦青创新能源有限公司 | Power battery pole column assembly, power battery top cover and power battery |
| CN212991173U (en) * | 2020-10-13 | 2021-04-16 | 厦门海辰新能源科技有限公司 | Independent pole assembling structure of secondary battery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284607A (en) * | 2021-12-17 | 2022-04-05 | 厦门海辰新能源科技有限公司 | Top cap subassembly, battery and energy memory |
| EP4312303A1 (en) * | 2022-07-25 | 2024-01-31 | Prime Planet Energy & Solutions, Inc. | Battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113725533B (en) | 2023-07-07 |
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Application publication date: 20211130 Assignee: SUNSHINE ELECTRONIC TECHNOLOGY Co.,Ltd. Assignor: Yichun Junzhi Electromechanical Technology Co.,Ltd. Contract record no.: X2023980053618 Denomination of invention: A new energy battery cover assembly component Granted publication date: 20230707 License type: Common License Record date: 20231222 |
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