Title:
SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/007756
Kind Code:
A1
Abstract:
A secondary battery that is obtained by having a power storage element, which charges and discharges electricity, contained in an outer package is provided with: a box, one surface of which is opened, and a cover which closes the surface of the box, the box and the cover constituting the outer package; an external terminal which is fitted to the cover in such a manner that at least a part thereof is exposed from the cover to the outside; and a collector which electrically connects the power storage element and the external terminal to each other. With respect to this secondary battery, the collector comprises a first extending part which is electrically connected to the power storage element and a plate-like second base part which is arranged along the cover and is electrically connected to the external terminal; the base part comprises a first base part constituent part which forms one end portion of the base part in the longitudinal direction, while being continued from the first extending part, and a second base part constituent part which forms the other end portion of the base part in the longitudinal direction, while being connected to the external terminal; and the second base part constituent part is formed to have a thinner thickness than the first base part constituent part.
Inventors:
SUZUKI TAKAYUKI (JP)
MASUDA HIROAKI (JP)
MASUDA HIROAKI (JP)
Application Number:
PCT/JP2021/035490
Publication Date:
February 02, 2023
Filing Date:
September 28, 2021
Export Citation:
Assignee:
VEHICLE ENERGY JAPAN INC (JP)
International Classes:
H01M10/04; H01M50/103; H01M50/15; H01M50/538; H01M50/55
Domestic Patent References:
| WO2012105490A1 | 2012-08-09 |
Foreign References:
| JP2013008559A | 2013-01-10 | |||
| JP2019061892A | 2019-04-18 | |||
| JP2013137991A | 2013-07-11 | |||
| JP2016189246A | 2016-11-04 |
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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