CN114447413A - Battery cover plate and battery - Google Patents
Battery cover plate and battery Download PDFInfo
- Publication number
- CN114447413A CN114447413A CN202210107893.4A CN202210107893A CN114447413A CN 114447413 A CN114447413 A CN 114447413A CN 202210107893 A CN202210107893 A CN 202210107893A CN 114447413 A CN114447413 A CN 114447413A
- Authority
- CN
- China
- Prior art keywords
- pole
- cover plate
- welding ring
- injection molding
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001746 injection moulding Methods 0.000 claims abstract description 61
- 238000003466 welding Methods 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 239000002131 composite material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/143—Fireproof; Explosion-proof
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a battery cover plate and a battery, wherein the battery cover plate comprises a cover body provided with a pole, the pole is sleeved with a welding ring, the welding ring is pressed around the edge of the pole, and an insulating ring is sleeved at the joint of the welding ring and the pole; at least one opening is arranged in the circumferential direction of the welding ring, an injection molding piece is sleeved on the periphery of the welding ring, and the surface of the injection molding piece, which is in contact with the welding ring, is provided with a protrusion embedded into the opening. According to the invention, the welding ring is provided with the opening structure, the injection molding part is filled in the opening position of the welding ring, and the insulating part is arranged between the welding ring and the pole, so that the influence of high temperature and high pressure in the injection molding process on the pole is avoided, and the sealing performance and the structural strength of the battery cover plate are improved.
Description
Technical Field
The invention belongs to the technical field of batteries, and relates to a battery cover plate and a battery.
Background
At present, the lithium ion power battery is widely applied to the fields of computers, mobile phones and the like due to the advantages of high energy density, high power density, multiple recycling times, long storage time and the like, has a wide application prospect in electric vehicles such as electric bicycles, electric automobiles and the like and energy storage facilities along with the maturity of manufacturing technology, and can effectively solve the problems of environmental pollution, energy crisis and the like due to the wide application of the power battery.
The power battery top cover that the market is used at present usually includes: the top cover plate is provided with two mounting holes, the positive pole column and the negative pole column are arranged in the mounting holes in a penetrating mode, the positive conductive injection molding piece on the periphery of the positive pole column is sleeved, the negative insulating injection molding piece on the periphery of the negative pole column is sleeved, and the injection molding piece is directly connected with the sealing ring.
CN208806273U discloses a lithium ion power battery cover plate and a battery thereof, which comprises a cover plate base body, wherein the cover plate base body is provided with two poles and an explosion-proof valve triggered when the pressure in a battery case reaches a first set value, the outer sides of the poles are sleeved with injection molding pieces, the poles and the cover plate base body are connected through the injection molding pieces, and the inner walls of the poles and the injection molding pieces are provided with first clamping structures for preventing the poles from twisting; injection molding bottom and apron base member are equipped with the third joint structure that prevents apron base member and the relative axial motion of injection molding second joint structure and apron base member that prevents apron base member and injection molding. Through the joint structure of injection molding and utmost point post and apron base member, can guarantee to bear big moment of torsion when apron threaded connection, and make utmost point post structure not destroyed, prevent that the battery from taking place the danger of leaking.
CN209766485U discloses a secondary cell top cap structure, including the lamina tecti, the lamina tecti runs through and is provided with utmost point post hole, utmost point post hole includes anodal post hole and negative pole post hole, all be provided with utmost point post subassembly on the utmost point post hole, utmost point post subassembly includes utmost point post, the sealing washer, go up injection molding, the connecting piece includes the connecting piece outer lane, the connecting piece inner circle is cavity setting, the connecting piece inner circle is located utmost point post downthehole, the sealing washer is connected with lamina tecti fixed surface, utmost point post includes that utmost point post is protruding, utmost point post outer lane, utmost point post arch passes the sealing washer and cooperatees with the connecting piece inner circle, clearance between utmost point post outer lane and the lamina tecti is provided with injection molding, the lamina tecti lower surface is provided with injection molding. The utility model discloses a secondary battery top cap simple structure, utmost point post and lamina tecti only need just can realize fixing through welded connection spare, and manufacturing process is simple, and greatly reduced top cap utmost point post's height, improve the battery inner space.
Therefore, how to provide a battery cover plate avoids the high temperature and high pressure in the injection molding process of the injection molding part from influencing the pole column, and improves the sealing property and the structural strength, which becomes the technical problem to be solved urgently at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a battery cover plate and a battery, wherein an opening structure is arranged on a welding ring, an injection molding part is arranged between the welding ring and a pole column by filling the opening position of the welding ring, and an insulating part is arranged between the welding ring and the pole column, so that the influence of high temperature and high pressure on the pole column in the injection molding process is avoided, and the sealing performance and the structural strength of the battery cover plate are improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a battery cover plate, which comprises a cover body provided with a pole, wherein a welding ring is sleeved on the pole, the edge of the pole is pressed around the welding ring, and an insulating ring is sleeved at the joint of the welding ring and the pole; at least one opening is arranged in the circumferential direction of the welding ring, an injection molding piece is sleeved on the periphery of the welding ring, and the surface of the injection molding piece, which is in contact with the welding ring, is provided with a protrusion embedded into the opening.
According to the invention, the welding ring, the insulating part and the injection molding part are arranged, so that the injection molding part is prevented from contacting the pole, the injection molding part can not directly act on the pole in the injection molding process, the influence of high temperature and high pressure in the injection molding process on the pole is avoided, the influence of a connecting part with the pole is further reduced, and the sealing performance and the structural strength of the battery cover plate are improved.
As a preferred technical solution of the present invention, the welding ring includes a main body portion and an extension portion, the main body portion is connected to the cover body, the extension portion surrounds and presses the edge of the pole, and the opening is opened in the extension portion.
As a preferable technical scheme of the invention, the edge of the pole is in a step shape, and the welding ring is pressed on the step edge of the pole.
In a preferred embodiment of the invention, the injection-molded part covers the weld ring all around.
As a preferred technical scheme of the present invention, the cover body is provided with a mounting hole, and the pole is disposed in the mounting hole.
It should be noted that, in the present invention, the periphery of the mounting hole may or may not adopt a convex hull structure, and the structural strength of the top cover plate may be enhanced by adopting the convex hull structure, but the existence of the convex hull structure may increase the height of the terminal, which is not favorable for improving the internal space utilization rate of the battery and the energy density of the battery.
Preferably, the edge of the mounting hole is provided with a mounting groove, and the main body part is arranged in the mounting groove.
The battery cover plate is of a structure without convex hulls by arranging the mounting groove, and the height of the pole can be effectively reduced, so that the energy density of the secondary battery is improved.
As a preferred technical solution of the present invention, a sealing ring is disposed between the pole and the cover body.
Preferably, a sealing groove is formed in the cover body, and the sealing ring is arranged in the sealing groove.
As a preferable technical scheme of the invention, a lower plastic structure is arranged on the surface of one side of the cover body, which is far away from the pole.
It should be noted that, in the present invention, the lower plastic structure is connected to the cover plate by means of adhesive tape or ultrasonic welding.
As a preferred technical solution of the present invention, the cover body is provided with an explosion-proof valve.
It should be noted that the explosion-proof valve is arranged in an explosion-proof valve through hole formed in the cover plate, and the explosion-proof valve comprises a rupture disk and a protective film.
As a preferred technical solution of the present invention, the pole includes a positive pole and a negative pole.
The positive pole column is provided with a positive pole injection molding piece, the positive pole injection molding piece has a resistance value, the negative pole column is provided with a negative pole injection molding piece, and the negative pole injection molding piece is insulated.
Preferably, the negative electrode post is a composite electrode post.
In the composite pole, the upper half part of the pole is made of aluminum alloy, the lower half part of the pole is made of copper simple substance, and the two parts are welded together through brazing or friction welding.
Exemplarily, an assembling method of the battery cover plate is provided, which specifically includes the following steps:
installing a polar column into the mounting hole, respectively sleeving an insulating part and a welding ring on the edge of the polar column, welding a main body part on the cover body, installing a sealing ring into the sealing groove, compressing the sealing ring by using a clamp, performing injection molding on the periphery of the welding ring to form an injection molding part, connecting the cover body, the polar column and the welding ring, and assembling to obtain the battery cover plate, wherein the assembling method is suitable for a positive pole column and a negative pole column.
In a second aspect, the present invention provides a battery, where the battery includes a battery core, a casing, and a battery cover plate, the battery core is disposed in the casing, the battery cover plate is covered at an opening of the casing, and the battery cover plate includes the battery cover plate of the first aspect.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the welding ring and the insulating part are arranged, so that the direct contact between the injection molding part and the pole is avoided, the influence of the pole on the pole connecting part is further avoided, the stress deformation of the pole and the connecting part caused by high temperature and high pressure in the injection molding process of the injection molding part is avoided, and the sealing performance of the sealing ring is ensured; in addition, the periphery of the welding ring is provided with an opening which is matched with an injection molding piece, so that the bonding strength and the anti-rotation performance of the injection molding piece are improved, and the structural stability of the battery cover plate is improved.
Drawings
Fig. 1 is a disassembled schematic view of a battery cover plate according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a battery cover plate provided in an embodiment of the present invention;
FIG. 3 is a schematic view of the mounting of a negative post provided in one embodiment of the present invention;
fig. 4 is a schematic structural diagram of a solder ring provided in an embodiment of the present invention.
Wherein, 1-negative pole injection molding; 2-a solder ring; 3-an insulator; 4-a negative pole post; 5-sealing ring; 6-cover body; 7-lower plastic structure; 8-positive pole injection molding; 9-positive pole column; 10-an explosion-proof valve; 11-a body portion; 12-an extension.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments.
In a specific embodiment, the invention provides a battery cover plate, as shown in fig. 1, fig. 2 and fig. 3, the battery cover plate includes a cover body 6 provided with a pole, the pole is sleeved with a welding ring 2, the welding ring 2 is pressed around the edge of the pole, and the joint of the welding ring 2 and the pole is sleeved with an insulating ring; at least one opening has been seted up to the circumference of welding ring 2, the periphery cover of welding ring 2 is equipped with the injection molding, the surface of injection molding and the contact of welding ring 2 is provided with the embedding open-ended arch.
According to the invention, the welding ring 2, the insulating part 3 and the injection molding part are arranged, so that the injection molding part is prevented from contacting with the pole, the injection molding part can not directly act on the pole in the injection molding process, the influence of high temperature and high pressure in the injection molding process on the pole is avoided, the influence on a pole connecting part is further reduced, and the sealing performance and the structural strength of the battery cover plate are improved.
Specifically, the pole includes a positive pole post 9 and a negative pole post 4. Anodal post 9 is provided with anodal injection molding 8, and anodal injection molding 8 has the resistance value, and negative pole post 4 is provided with negative pole injection molding 1, and negative pole injection molding 1 is insulating.
Specifically, as shown in fig. 4, the weld ring 2 includes a main body portion 11 and an extension portion 12, the main body portion 11 is connected to the cover 6, the extension portion 12 surrounds the edge of the pole, and the opening is opened in the extension portion 12.
Specifically, the edge of the pole is stepped, and the welding ring 2 is pressed on the stepped edge of the pole.
In particular, the injection-molded part covers the weld ring 2 all around.
Specifically, the cover body 6 is provided with a mounting hole, and the pole is arranged in the mounting hole. Optionally, the periphery of the mounting hole may or may not be in a convex hull structure, and the convex hull structure may enhance the structural strength of the top cover sheet.
Specifically, the edge of the mounting hole is provided with a mounting groove, and the main body portion 11 is disposed in the mounting groove. The battery cover plate is of a structure without convex hulls by arranging the mounting groove, and the height of the pole can be effectively reduced, so that the energy density of the secondary battery is improved.
Specifically, a sealing ring 5 is arranged between the pole and the cover body 6. Further, a sealing groove is formed in the cover body 6, and the sealing ring 5 is arranged in the sealing groove.
Specifically, the cover body 6 is provided with a lower plastic structure 7 on the surface of one side away from the pole. Optionally, the lower plastic structure 7 is connected to the cover plate by means of gluing or ultrasonic welding.
Specifically, the cover 6 is provided with an explosion-proof valve 10. Optionally, the explosion-proof valve 10 is disposed in an explosion-proof valve 10 through hole formed in the cover plate, and the explosion-proof valve 10 includes a rupture disk and a protective film.
Specifically, the negative electrode post 4 is a composite electrode post. In the composite pole, the upper half part of the pole is aluminum alloy, the lower half part of the pole is a copper simple substance, and the two parts are welded together through brazing or friction welding technology.
Exemplarily, there is provided an assembling method of the battery cover plate, the assembling method specifically includes the following steps:
installing a pole into the mounting hole, respectively sleeving the insulating part 3 and the welding ring 2 on the edge of the pole, welding the main body part 11 on the cover body 6, installing the sealing ring 5 into the sealing groove, compressing the sealing ring by using a clamp, performing injection molding on the periphery of the welding ring 2 to form an injection molding part, connecting the cover body 6, the pole and the welding ring 2, and assembling to obtain the battery cover plate, wherein the assembling method is suitable for the positive pole 9 and the negative pole 4.
The invention also provides a battery, which comprises an electric core, a shell and a battery cover plate, wherein the electric core is arranged in the shell, the battery cover plate is covered at an opening of the shell, and the battery cover plate comprises the battery cover plate of the first aspect.
According to a specific embodiment, the welding ring 2 and the insulating part 3 are arranged, so that the direct contact between the injection molding part and the pole is avoided, the influence of the pole on the pole connecting part is further avoided, the stress deformation of the pole and the connecting part caused by high temperature and high pressure in the injection molding process of the injection molding part is avoided, and the sealing performance of the sealing ring 5 is ensured; in addition, the periphery of the welding ring 2 is provided with an opening which is matched with an injection molding piece, so that the bonding strength and the anti-rotation performance of the injection molding piece are improved, and the structural stability of the battery cover plate is improved.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. A battery cover plate is characterized by comprising a cover body provided with a pole, wherein a welding ring is sleeved on the pole, the edge of the pole is pressed around the welding ring, and an insulating ring is sleeved at the joint of the welding ring and the pole;
at least one opening is arranged in the circumferential direction of the welding ring, an injection molding piece is sleeved on the periphery of the welding ring, and the surface of the injection molding piece, which is in contact with the welding ring, is provided with a protrusion embedded into the opening.
2. The battery cover plate according to claim 1, wherein the weld ring comprises a main body portion and an extension portion, the main body portion is connected with the cover body, the extension portion surrounds the edge of the pole in a pressing mode, and the opening is formed in the extension portion.
3. The battery cover plate according to claim 1 or 2, wherein the edge of the pole is stepped, and the welding ring is pressed on the stepped edge of the pole.
4. The battery cover plate according to any one of claims 1 to 3, wherein the injection-molded part circumferentially covers the weld ring.
5. The battery cover plate according to any one of claims 1 to 4, wherein the cover body is provided with a mounting hole, and the pole is disposed in the mounting hole;
preferably, the edge of the mounting hole is provided with a mounting groove, and the main body part is arranged in the mounting groove.
6. The battery cover plate according to any one of claims 1 to 5, wherein a sealing ring is arranged between the pole and the cover body;
preferably, a sealing groove is formed in the cover body, and the sealing ring is arranged in the sealing groove.
7. The battery cover plate according to any one of claims 1 to 6, wherein a lower plastic structure is arranged on a surface of one side of the cover body away from the pole.
8. The battery cover plate according to any one of claims 1 to 7, wherein an explosion-proof valve is provided on the lid body.
9. The battery cover plate according to any one of claims 1 to 8, wherein the post comprises a positive post and a negative post;
preferably, the negative electrode post is a composite electrode post.
10. A battery, comprising a core, a housing, and a cover plate, wherein the core is disposed in the housing, the cover plate is disposed at an opening of the housing, and the cover plate comprises the cover plate of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210107893.4A CN114447413B (en) | 2022-01-28 | 2022-01-28 | Battery cover plate and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210107893.4A CN114447413B (en) | 2022-01-28 | 2022-01-28 | Battery cover plate and battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114447413A true CN114447413A (en) | 2022-05-06 |
| CN114447413B CN114447413B (en) | 2023-09-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210107893.4A Active CN114447413B (en) | 2022-01-28 | 2022-01-28 | Battery cover plate and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114447413B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114865179A (en) * | 2022-05-30 | 2022-08-05 | 天津市捷威动力工业有限公司 | Integrated pole, top cover assembly, battery and battery module |
| SE2330178A1 (en) * | 2022-11-10 | 2024-05-11 | Ningbo Zhenyu Auto Parts Co Ltd | Battery top cover assembly |
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| CN214957087U (en) * | 2021-01-25 | 2021-11-30 | 荣盛盟固利新能源科技有限公司 | Battery cover plate and power battery |
| CN215342885U (en) * | 2021-05-26 | 2021-12-28 | 江西百思利新能源科技股份有限公司 | Negative pole post subassembly and secondary cell top cap thereof |
| CN113644354A (en) * | 2021-07-15 | 2021-11-12 | 东莞塔菲尔新能源科技有限公司 | Battery top cap structure, battery and electric device |
| CN215578771U (en) * | 2021-09-01 | 2022-01-18 | 广州力电宝电子科技有限公司 | Top cover of power battery with extremely simple pole |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114865179A (en) * | 2022-05-30 | 2022-08-05 | 天津市捷威动力工业有限公司 | Integrated pole, top cover assembly, battery and battery module |
| SE2330178A1 (en) * | 2022-11-10 | 2024-05-11 | Ningbo Zhenyu Auto Parts Co Ltd | Battery top cover assembly |
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| Publication number | Publication date |
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| CN114447413B (en) | 2023-09-26 |
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Effective date of registration: 20240731 Address after: 313100 Green Intelligent Manufacturing Industrial Park, South Taihu industrial cluster, Changxing County Development Zone, Huzhou City, Zhejiang Province Patentee after: Jiewei Power (Changxing) Co.,Ltd. Country or region after: China Address before: No.11, Kaiyuan Road, Xiqing automobile industrial zone, Xiqing District, Tianjin 300380 Patentee before: TIANJIN EV ENERGIES Co.,Ltd. Country or region before: China |
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