Title:
Rechargeable battery
Document Type and Number:
Japanese Patent JP6192807
Kind Code:
B2
Abstract:
Provided is a secondary battery which is capable of more reliably cutting off current by increasing a deformation amount of a member, which is deformed by a rise of an internal pressure of a battery container and cuts off current. The secondary battery is provided with a current cut-off mechanism 50 in a current path between an external terminal 20A and an electrode 41 inside a battery container 10. The current cut-off mechanism 50 is accommodated in the battery container 10, and is provided with a diaphragm 5 connected to the external terminal 20A and a current collector 30A connected to the electrode 41. The diaphragm 5 is disposed on an outer side of the battery container 10 than the current collector 30A and has a convex shape toward an inside of the battery container 10. The current collector 30A includes a concave portion 33b on a surface facing the outer side of the battery container 10, and the diaphragm 5 is bonded to the concave portion 33b.
Inventors:
Keisuke Sawada
Kazuaki Urano
Takuro Tsunagi
Kazuaki Urano
Takuro Tsunagi
Application Number:
JP2016508690A
Publication Date:
September 06, 2017
Filing Date:
March 13, 2015
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
H01M50/176; H01M50/55; H01M50/553; H01M50/562
Domestic Patent References:
| JP2013161712A |
Foreign References:
| WO2014033806A1 |
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Toshiaki Watanabe
Sekiya Mitsuo
Toshiaki Watanabe