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Patent Searching and Data


Title:
SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/037076
Kind Code:
A1
Abstract:
Provided is a secondary battery, comprising an electrode assembly, a packaging bag, and electrode leads. The electrode assembly is accommodated in the packaging bag and comprises a first electrode member, a second electrode member and a diaphragm. The diaphragm separates the first electrode member from the second electrode member. The first electrode member comprises an insulating substrate, a conductive layer, an active substance layer and a conductive structure. The conductive layer is provided on the surface of the insulating substrate, and the conductive layer is provided with a first portion and a second portion. The first portion is coated with the active substance layer. The second portion is not coated with the active substance layer. The conductive structure is welded to the second portion to form a first welding area. The electrode leads are connected to the conductive structure and extend to the outside of the packaging bag. The portion, corresponding to the first portion, of the insulating substrate and the first portion form a main body portion, and the portion, corresponding to the second portion, of the insulating substrate and the second portion form an electric guide portion. The electric guide portion is provided with an inclined area provided in an inclined manner relative to the main body portion, and the first welding area is at least partially located in the inclined area.

Inventors:
XIE MIANYU (CN)
WANG GUANGJUN (CN)
Application Number:
PCT/CN2020/111451
Publication Date:
March 04, 2021
Filing Date:
August 26, 2020
Export Citation:
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Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M2/20
Foreign References:
CN210136972U2020-03-10
CN208507818U2019-02-15
CN101026250A2007-08-29
CN1242613A2000-01-26
JP2008016368A2008-01-24
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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