Invention Grant
- Patent Title: Nonaqueous electrolyte secondary battery
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Application No.: US16496552Application Date: 2018-03-20
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Publication No.: US11769933B2Publication Date: 2023-09-26
- Inventor: Atsushi Mizawa , Junichi Sugaya , Tomomichi Ueda , Masahiro Nakamura , Kei Kobayashi
- Applicant: SANYO Electric Co., Ltd.
- Applicant Address: JP Daito
- Assignee: PANASONIC ENERGY CO., LTD.
- Current Assignee: PANASONIC ENERGY CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: WHDA, LLP
- Priority: JP 17062532 2017.03.28
- International Application: PCT/JP2018/010952 2018.03.20
- International Announcement: WO2018/180748A 2018.10.04
- Date entered country: 2019-09-23
- Main IPC: H01M50/474
- IPC: H01M50/474 ; H01M10/0525 ; H01M10/0587 ; H01M50/595 ; H01M50/536 ; H01M50/586 ; H01M50/534

Abstract:
The present disclosure aims to suppress, in a winding type electrode body in which a negative electrode lead is bonded to a winding start side end of a negative electrode collector, electrode plate deformation in association with charge/discharge cycles. A nonaqueous electrolyte secondary battery according to one aspect of the present disclosure includes a winding type electrode body (14). A negative electrode (12) includes a negative electrode lead (20a) bonded to a winding start side end of a negative electrode collector and is wound at least one turn from a winding-direction inner end so as not to face a positive electrode (11) with a separator (13) interposed therebetween. The negative electrode (12) includes an insulating tape (40) adhered to the negative electrode collector so as to straddle a surface of the negative electrode lead (20a) in a winding direction.
Public/Granted literature
- US20210111465A1 NONAQUEOUS ELECTROLYTE SECONDARY BATTERY Public/Granted day:2021-04-15
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