Title:
Current cutoff device and power storage device using it
Document Type and Number:
Japanese Patent JP6314692
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a current cutoff device having excellent responsiveness to a pressure change.SOLUTION: A current cutoff device 50 cuts off the conduction between an electrode terminal and an electrode when the pressure in a case 18 of a power storage device 100 exceeds a prescribed value. The current cutoff device 50 comprises a first current-carrying member 37, a second current-carrying member 88, and a deformable member 80. The first current-carrying member 37 is connected to the electrode terminal. The second current-carrying member 88 is connected to the electrode. The deformable member 80 is arranged between the first current-carrying member 37 and the second current-carrying member 88, and connected to the first current-carrying member 37. When the pressure in the case 18 is not more than the prescribed value, the deformable member 80 is in contact with the second current-carrying member 88. When the pressure in the case 18 exceeds the prescribed value, the deformable member 80 is not in contact with the second current-carrying member 88. In the current cutoff device 50, a part of a peripheral edge of the deformable member 80 is connected to the first current-carrying member 37, and a part of the other of the peripheral edge of the deformable member 80 is not connected to the first current-carrying member 37.
Inventors:
Nobuyoshi Ito
Akiyama Taiyu
Hideaki Shinoda
Motoaki Okuda
Takayuki Hirose
Akiyama Taiyu
Hideaki Shinoda
Motoaki Okuda
Takayuki Hirose
Application Number:
JP2014131652A
Publication Date:
April 25, 2018
Filing Date:
June 26, 2014
Export Citation:
Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
International Classes:
H01M2/34; H01G11/14; H01G11/74
Domestic Patent References:
| JP2013191366A | ||||
| JP2014232690A | ||||
| JP2008066255A |
Attorney, Agent or Firm:
Kaiyu International Patent Office