Title:
RECTANGULAR SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2016/047199
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a rectangular secondary battery in which heat generation at a collector plate is suppressed. A rectangular secondary battery (100) according to the present invention, which solves the above-described problem, comprises a flat wound group (3) that is obtained by winding a positive electrode (34) having a positive electrode metal foil exposure part (34b), a battery can (1) in which the wound group is contained, a battery cover (6) that seals the battery can, a positive electrode external terminal (14) that is provided on the battery cover, and a positive electride collector plate (44) that electrically connects the external terminal and the wound group. The positive electride collector plate (44) comprises a fixation part (44a) that is affixed to the battery cover, a welding part (44c) that is welded to the metal foil exposure part of the wound group, and a connection part (44b) that connects the fixation part and the welding part with each other. In addition, the collector plate (44) has a width portion where the connection part is not wider than the fixation part and the welding part and a thickness portion where the connection part is thicker than the fixation part or the welding part.
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Inventors:
SATO TAKESHI (JP)
SHINOHARA HIDEKI (JP)
TADA AKINORI (JP)
SHINOHARA HIDEKI (JP)
TADA AKINORI (JP)
Application Number:
PCT/JP2015/064598
Publication Date:
March 31, 2016
Filing Date:
May 21, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
H01M50/534
Domestic Patent References:
| WO2014033827A1 | 2014-03-06 |
Foreign References:
| JP2014082072A | 2014-05-08 | |||
| JP2012209238A | 2012-10-25 | |||
| JP2013161758A | 2013-08-19 | |||
| JP2013008559A | 2013-01-10 | |||
| JP2007042628A | 2007-02-15 | |||
| JP2015023026A | 2015-02-02 |
Other References:
See also references of EP 3200262A4
Attorney, Agent or Firm:
HIRAKI Yusuke et al. (JP)
Yusuke Hiraki (JP)
Yusuke Hiraki (JP)
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