Invention Grant
- Patent Title: Nonaqueous-electrolyte secondary battery and secondary battery module
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Application No.: US17171445Application Date: 2021-02-09
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Publication No.: US11791471B2Publication Date: 2023-10-17
- Inventor: Kaoru Inoue , Akihiro Taniguchi , Hideki Sano , Kouhei Tsuzuki , Hiroki Iguchi
- Applicant: Panasonic Corporation , TOYOTA JIDOSHA KABUSHIKI KAISHA
- Applicant Address: JP Kadoma
- Assignee: PANASONIC HOLDINGS CORPORATION,TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee: PANASONIC HOLDINGS CORPORATION,TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee Address: JP Kadoma; JP Toyota
- Agency: WHDA, LLP
- Priority: JP 20021651 2020.02.12
- Main IPC: H01M4/66
- IPC: H01M4/66 ; H01M4/36 ; H01M4/13 ; H01M50/46 ; H01M50/471 ; H01M4/133 ; H01M4/134 ; H01M4/38 ; H01M10/0525 ; H01M4/131 ; H01M4/02

Abstract:
A secondary battery module according to the present embodiment includes a nonaqueous-electrolyte secondary battery and an elastic body, wherein a negative electrode constituting the nonaqueous-electrolyte secondary battery includes a negative-electrode current collector and a negative-electrode active material layer, the negative-electrode active material layer includes a first layer formed on the negative-electrode current collector, and a second layer that is formed on the first layer and has a higher compression modulus than the first layer, a separator constituting the nonaqueous-electrolyte secondary battery has a lower compression modulus than the first layer, the elastic body has a lower compression modulus than the separator, a graphite particles contained in the first layer have a BET specific surface area of 1 to 2.5 m2/g, and the first layer 52a contains 0.01 mass % to 0.4 mass % of a carbon nanotube having one to five graphene sheets.
Public/Granted literature
- US20210249662A1 NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY AND SECONDARY BATTERY MODULE Public/Granted day:2021-08-12
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