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Patent Searching and Data


Title:
METHOD FOR PRODUCING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/065128
Kind Code:
A1
Abstract:
In a method for producing a nonaqueous electrolyte secondary battery according to the present invention, a wound electrode body is formed (S10); and a flat wound electrode body is formed by pressing (S12). The flat wound electrode body and a cover member are connected to each other (S14); a battery case and the cover member are integrated with each other (S16); and a nonaqueous electrolyte solution is injected using a liquid injection port of the cover member, and the liquid injection port is sealed after the liquid injection, thereby forming a nonaqueous electrolyte secondary battery before inspection (S18). Subsequently, the nonaqueous electrolyte secondary battery before inspection is pressed into a predetermined pressed state (S20). A predetermined charge/discharge inspection is performed on the nonaqueous electrolyte secondary battery in the predetermined pressed state (S22). If predetermined inspection specifications are satisfied in the predetermined charge/discharge inspection, the nonaqueous electrolyte secondary battery is considered as a product that is ready for shipment (S24).

Inventors:
OKADO Tetsuya
MURAOKA Masashi
ARAI Tomoharu
MIYAZAKI Atsushi
Application Number:
JP2020/025843
Publication Date:
April 08, 2021
Filing Date:
July 01, 2020
Export Citation:
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Assignee:
SANYO ELECTRIC CO., LTD. (Daito-shi Osaka, 34, JP)
International Classes:
H01M10/0587; H01M2/02
Attorney, Agent or Firm:
TOKUDA Yoshiaki et al. (1006 Oaza Kadoma, Kadoma-sh, Osaka 01, JP)
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