Invention Grant
- Patent Title: Nonaqueous electrolyte secondary battery
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Application No.: US16982676Application Date: 2019-02-15
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Publication No.: US11502382B2Publication Date: 2022-11-15
- Inventor: Kei Kobayashi , Atsushi Mizawa , Takaki Nakao
- Applicant: SANYO Electric Co., Ltd.
- Applicant Address: JP Daito
- Assignee: SANYO Electric Co., Ltd.
- Current Assignee: SANYO Electric Co., Ltd.
- Current Assignee Address: JP Daito
- Agency: WHDA, LLP
- Priority: JPJP2018-060677 20180327
- International Application: PCT/JP2019/005594 WO 20190215
- International Announcement: WO2019/187755 WO 20191003
- Main IPC: H01M50/572
- IPC: H01M50/572 ; H01M50/595 ; H01M10/0587 ; H01M10/0525

Abstract:
The purpose of the present disclosure is to prevent, in a nonaqueous electrolyte secondary battery, a tape adhered to an outermost peripheral surface of an electrode group from breaking due to charging and discharging. A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure includes a winding-type electrode group and tapes adhered to an outermost peripheral surface of the electrode group so that an electrode group winding end E is fixed to the outermost peripheral surface of the electrode group. The tapes include: two adhesive regions including a substrate layer and an adhesive layer; and a non-adhesive region sandwiched between the two adhesive regions and consisting only of the substrate layer. The non-adhesive region is disposed so as to extend across the winding end E, which is positioned on the outermost periphery of the electrode group, in the winding direction.
Public/Granted literature
- US20210005871A1 NONAQUEOUS ELECTROLYTE SECONDARY BATTERY Public/Granted day:2021-01-07
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