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Patent Searching and Data


Title:
SECONDARY BATTERY, ELECTRONIC DEVICE, AND ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2021/177069
Kind Code:
A1
Abstract:
A secondary battery including a wound electrode body having a structure in which a band-shaped negative electrode is layered facing a band-shaped positive electrode and wound with a separator therebetween, a battery can in which the wound electrode body is accommodated, and a battery lid provided to an opening in the battery can, wherein the positive electrode has a positive electrode end on the battery lid side, the battery can has a thick section on the battery lid side, a thin section with a thinner thickness than the thick section on the can bottom side, and a thickness transition section between the thick section and the thin section, and the thick section is arranged so as to overlap the positive electrode end in a cross-sectional view.

Inventors:
SODEYAMA KUNIO (JP)
Application Number:
PCT/JP2021/006586
Publication Date:
September 10, 2021
Filing Date:
February 22, 2021
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01M50/10; H01M10/04; H01M10/0587
Domestic Patent References:
WO2017085918A12017-05-26
Foreign References:
JP2002216709A2002-08-02
KR20070027353A2007-03-09
Attorney, Agent or Firm:
SUGIURA, Takuma et al. (JP)
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