SE546722C2 - Top Cover Injection Molding Structure of Power Battery - Google Patents

Top Cover Injection Molding Structure of Power Battery

Info

Publication number
SE546722C2
SE546722C2 SE2330172A SE2330172A SE546722C2 SE 546722 C2 SE546722 C2 SE 546722C2 SE 2330172 A SE2330172 A SE 2330172A SE 2330172 A SE2330172 A SE 2330172A SE 546722 C2 SE546722 C2 SE 546722C2
Authority
SE
Sweden
Prior art keywords
terminal
top cover
piece
injection molding
concave
Prior art date
Application number
SE2330172A
Other languages
Swedish (sv)
Other versions
SE2330172A1 (en
Inventor
Shiya He
Original Assignee
Ningbo Zhenyu Tech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo Zhenyu Tech Co Ltd filed Critical Ningbo Zhenyu Tech Co Ltd
Priority to SE2330172A priority Critical patent/SE546722C2/en
Publication of SE2330172A1 publication Critical patent/SE2330172A1/en
Publication of SE546722C2 publication Critical patent/SE546722C2/en

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • 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
    • H01M50/564—Terminals characterised by their manufacturing process
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The disclosure relates to the field of lithium batteries, and specifically relates to a top cover injection molding structure of a power battery. The top cover injection molding structure comprises a top cover sheet (10) and a terminal assembly (20). The top cover sheet (10) is provided with a terminal hole (13) for the terminal assembly (20) to fit. A plurality of connecting bosses (12) are provided on a periphery of the terminal hole (13). The terminal assembly (20) comprises a first plastic piece (21), a terminal (22) and a seal (23). After the terminal (22) is assembled to the terminal hole (13) by the seal (23), a first plastic piece (21) is obtained by injection molding on a periphery of the terminal (22). The first plastic piece (21) is in concave-convex fit with the connecting boss (12) to fixedly connect the terminal (22) to the top cover sheet (10), and the terminal (22) is insulated from the top cover sheet (10) by the first plastic piece (21) and the seal (23). The top cover injection molding structure of the disclosure has firm connection and low manufacturing cost, which is beneficial to promote application of lithium batteries.

Claims (7)

1. A top cover injection molding structure of a power battery, comprising: a top cover sheet (10) Which is provided with a terminal hole (13) in a penetrating manner, wherein a plurality of connecting bosses (12) are conveXly provided around a periphery of the terminal hole (13), and a first concave-conveX piece (121) is formed on the connecting boss (12); and a terminal assembly (20) which is fitted to the top cover sheet (10) to form a positive terminal (201) or a negative terminal (202); wherein the terminal assembly (20) comprises a first plastic piece (21), a terminal (22) and a seal (23), the terminal (22) is assembled to the terminal hole (13), the seal (23) is arranged between the terminal (22) and the top cover sheet (10), and the first plastic piece (21) is obtained by injection molding on the periphery of the terminal (22); a boss cavity (213) is molded in the first plastic piece (21) for accommodating the connecting bosses (12), a second concave-conveX piece (214) is molded in the boss cavity (213), and the first plastic piece (21) is connected to the top cover sheet (10) through concave-conveX fit between the first concave-conveX piece (121) and the second concave-conveX piece (214), so that the terminal (22) and the seal (23) are fixed to the top cover sheet (10) by the first plastic piece (21); wherein the terminal (22) is insulated from the top cover sheet (10) by the first plastic piece (21) and the seal (23)=¿ during an injection molding and cooling process of the first plastic piece (21), a predetermined pressure is applied to the terminal (22) so that the seal (23) is in a compressed state, and after the injection molding and cooling and removal of the pressure, the seal (23) is kept in the compressed state by connection of the first plastic piece (21)f¿ first plastic piece (21) is in the shape of a flat circular ring and comprises a plastic ring body (211) and a plastic ring inner hole (212) located in the middle of the plastic ring body (211), and the plastic ring inner hole (212) is used for fitting at least a part of the terminal (22) therein; and the boss cavity (213) is formed on a bottom surface of the plastic ring body (211)T¿ upper terminal (221), a terminal fiXing portion (222) and a lower terminal (223) are sequentially formed on the terminal (22), the upper terminal (221) and the lower terminal (223) arerespectively arranged protruding upwards and downwards relative to the terminal fiXing portion (222), and the terminal fiXing portion (222) is arranged protruding relative to the upper terminal (221) and the lower terminal (223) in a lateral direction; and a gap is formed between the terminal fiXing portion (222) and the connecting boss (12), and the gap is filled by the first plastic piece (21) during the injection molding for insulation. 5-
2. The top cover injection molding structure of a power battery according to-el-aim-4m, wherein a fourth concave-conveX piece (224) is provided on a circumference of the terminal fiXing portion (222) or the upper terminal (221), a third concave-conveX piece (215) is correspondingly molded on the first plastic piece (21), and the fourth concave-conveX piece (224) and the third concave-conveX piece (215) are in concave-conveX fit with each other to lock a circumferential rotation of the terminal (22). 6-
3. The top cover injection molding structure of a power battery according to-el-aimä claim 2, wherein the fourth concave-conveX piece (224) and the third concave-conveX piece (215) are a notch and a bump respectively, and a plurality of notches and bumps are arranged along a circumferential direction. 7-
4. The top cover injection molding structure of a power battery according to-el-aim-4m, wherein the plastic ring body (211) is arranged to wrap side walls of the upper terminal (221) and the terminal fiXing portion (222), so that a cavity portion (216) is formed in the plastic ring body (211), so that only a top surface of the terminal (22) is exposed after the injection molding; and a sunken platform (17) is formed at an area where the connecting boss (12) is arranged, and the sunken platform (17) is filled by the first plastic piece (21) after the injection molding; a conveX platform (15) is also provided around the terminal hole (13), and a concave ring (16) is arranged on a periphery of the conveX platform (15), the concave ring (16) is in the shape of a circular ring and is recessed relative to the sunken platform (17), so that the seal (23) is positioned on the conveX platform (15) and the concave ring (16). 8-
5. The top cover injection molding structure of a power battery according to claim 1, wherein a second plastic piece (40) made of an insulating material is arranged under the top cover sheet (10), a first connecting piece (19) is provided on a bottom surface of the top cover sheet (10), and a second connecting piece (41) is correspondingly provided on the second plastic piece (40), and the second connecting piece (41) and the first connecting piece (19) are snapped together or in connection fit after heat fusion, so that the second plastic piece (40) is fiXedly connected to an underside of the top cover sheet (10). Q-Q. The top cover injection molding structure of a power battery according to claim l, wherein the top cover sheet (10) is further provided with an explosion-proof valve (30) or an electrolyte injection port (l4); the explosion-proof valve (30) is a split-type explosion-proof valve and comprises an explosion-proof valve plate (32) and an explosion-proof valve film (33), the top cover sheet (l0) is provided with an explosion-proof valve hole (3l) in a penetrating manner, the explosion-proof valve plate (32) is welded to an underside of the explosion-proof valve hole (3l), and the explosion-proof valve film (33) is attached to an upside of the explosion-proof valve hole (3l); or the explosion-proof valve (30) is an integral explosion-proof valve and comprises an explosion-proof valve plate (32) integrally molded on the top cover sheet (l0) and an explosion-proof valve film (33) attached to the explosion-proof valve plate (32). -l-Q-Z. The top cover injection molding structure of a power battery according to-el-aflim-Qm, wherein the positive terminal (20l) and the negative terminal (202) are arranged on a same top cover sheet (l0) to form an integral power battery top cover assembly, or the positive terminal (20l) and the negative terminal (202) are respectively arranged on different top cover sheets (l0) to form a split-type power battery top cover assembly; the connecting boss (l2) is formed by stamping on the top cover sheet (l0), the connecting boss (l2) is a columnar structure, a molding hole (18) is formed under the connecting boss (l2), and the first concave-conveX piece (l2l) in the shape of a hat is molded on a top thereof; the connecting bosses (l2) are evenly distributed along a circular ring concentric with the terminal hole (l3); and a terminal mounting hole (l3) is formed around the terminal hole (l3).
SE2330172A 2023-04-23 2023-04-23 Top Cover Injection Molding Structure of Power Battery SE546722C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE2330172A SE546722C2 (en) 2023-04-23 2023-04-23 Top Cover Injection Molding Structure of Power Battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2330172A SE546722C2 (en) 2023-04-23 2023-04-23 Top Cover Injection Molding Structure of Power Battery

Publications (2)

Publication Number Publication Date
SE2330172A1 SE2330172A1 (en) 2024-10-24
SE546722C2 true SE546722C2 (en) 2025-02-11

Family

ID=93465879

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2330172A SE546722C2 (en) 2023-04-23 2023-04-23 Top Cover Injection Molding Structure of Power Battery

Country Status (1)

Country Link
SE (1) SE546722C2 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109860450A (en) * 2019-03-27 2019-06-07 东莞天予天正新能源科技有限公司 A kind of power battery top cover and its assembly method and power battery
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
CN112909447A (en) * 2021-02-25 2021-06-04 武汉富航精密工业有限公司 Electrode undercut structure of secondary lithium battery top cap
CN113410555A (en) * 2021-07-16 2021-09-17 厦门海辰新能源科技有限公司 Utmost point post subassembly, battery top cap and power battery
CN114628822A (en) * 2022-03-17 2022-06-14 力神（青岛）新能源有限公司 High-performance battery cover plate and battery
CN114937839A (en) * 2022-06-09 2022-08-23 宁波震裕汽车部件有限公司 Split type riveting top cap structure and battery
CN217468605U (en) * 2022-06-16 2022-09-20 宜宾长盈精密技术有限公司 Safety top cover of power battery
SE2250985A1 (en) * 2021-05-14 2022-11-17 Shenzhen Kedali Ind Co Ltd Power battery cover and power battery
CN115401855A (en) * 2022-09-01 2022-11-29 宁波震裕科技股份有限公司 Punching-riveting injection molding processing method for battery top cover
CN115318953B (en) * 2022-10-17 2023-02-10 宁波震裕科技股份有限公司 Stamping and integral forming method of top cover plate, battery top cover structure and manufacturing method thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109860450A (en) * 2019-03-27 2019-06-07 东莞天予天正新能源科技有限公司 A kind of power battery top cover and its assembly method and power battery
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
CN112909447A (en) * 2021-02-25 2021-06-04 武汉富航精密工业有限公司 Electrode undercut structure of secondary lithium battery top cap
SE2250985A1 (en) * 2021-05-14 2022-11-17 Shenzhen Kedali Ind Co Ltd Power battery cover and power battery
CN113410555A (en) * 2021-07-16 2021-09-17 厦门海辰新能源科技有限公司 Utmost point post subassembly, battery top cap and power battery
CN114628822A (en) * 2022-03-17 2022-06-14 力神（青岛）新能源有限公司 High-performance battery cover plate and battery
CN114937839A (en) * 2022-06-09 2022-08-23 宁波震裕汽车部件有限公司 Split type riveting top cap structure and battery
CN217468605U (en) * 2022-06-16 2022-09-20 宜宾长盈精密技术有限公司 Safety top cover of power battery
CN115401855A (en) * 2022-09-01 2022-11-29 宁波震裕科技股份有限公司 Punching-riveting injection molding processing method for battery top cover
CN115318953B (en) * 2022-10-17 2023-02-10 宁波震裕科技股份有限公司 Stamping and integral forming method of top cover plate, battery top cover structure and manufacturing method thereof

Also Published As

Publication number Publication date
SE2330172A1 (en) 2024-10-24

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