Title:
RECTANGULAR SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/155522
Kind Code:
A1
Abstract:
The invention comprises: an electrode body containing a positive electrode plate and a negative electrode plate; a rectangular exterior body accommodating the electrode body; a sealing plate (2) sealing the opening of the rectangular exterior body; a positive electrode tab group comprising a plurality of positive electrode tabs; a positive pole terminal (7) electrically connected to the positive electrode tab group and mounted on the sealing plate (2); a second positive electrode current collector electrically connected to the positive electrode tab group and the positive pole terminal (7); and a second insulation member (63) disposed between the sealing plate (2) and the second positive electrode current collector. The sealing plate (2) is provided with a gas exhaust valve. The sealing plate (2) is provided with a first recessed portion (2c). The second insulation member (63) is provided with a first protrusion (70). The first protrusion (70) is disposed inside the first recessed portion (2c). The first recessed portion (2c) is offset in the transverse direction of the sealing plate (2) more toward an edge portion of the sealing plate (2) than the center of the sealing plate (2).
Inventors:
WAKIMOTO RYOICHI
Application Number:
PCT/JP2018/006334
Publication Date:
August 30, 2018
Filing Date:
February 22, 2018
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
International Classes:
H01M50/176; H01M50/184; H01M50/186; H01M50/553; H01M50/191; H01M50/536; H01M50/54; H01M50/55; H01M50/562; H01M50/566
Domestic Patent References:
| WO2014080518A1 | 2014-05-30 |
Foreign References:
| JP2016207510A | 2016-12-08 | |||
| JP2013161554A | 2013-08-19 | |||
| JP2013157099A | 2013-08-15 |
Attorney, Agent or Firm:
TOKUDA Yoshiaki et al. (JP)
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