Title:
Nonaqueous electrolyte rechargeable battery
Document Type and Number:
Japanese Patent JP6003656
Kind Code:
B2
Abstract:
In non-aqueous electrolyte secondary batteries, an organic solvent is used for an electrolyte. Thus, the non-aqueous electrolyte may be decomposed to produce a gas in the battery to abruptly raise the internal pressure of the battery in an abnormal state such as an internal short circuit or overcharge. In order to prevent a rupture of the battery case due to a rise in internal pressure, the non-aqueous electrolyte secondary battery includes a cleavage valve that opens when the internal pressure rises. The cleavage valve includes a valve element and a ring member, and is installed in a through hole provided in a lid plate. In order to prevent corrosion of the cleavage valve, a corrosion preventing foil is provided to cover the through hole provided in the lid plate of the battery case from inside the battery case to cover the cleavage valve.
Inventors:
Kunino Satoshi
Application Number:
JP2012558006A
Publication Date:
October 05, 2016
Filing Date:
February 16, 2012
Export Citation:
Assignee:
Hitachi Chemical Co., Ltd.
International Classes:
H01M2/12; H01M2/02; H01M2/04; H01M10/0566
Domestic Patent References:
| JP2001057185A | 2001-02-27 | |||
| JP2002184379A | 2002-06-28 | |||
| JPH11260326A | 1999-09-24 | |||
| JP2001057185A | 2001-02-27 | |||
| JP2002184379A | 2002-06-28 | |||
| JPH11260326A | 1999-09-24 |
Attorney, Agent or Firm:
西浦 ▲嗣▼晴
High Miki Yoshiki
Soichiro Senuma
High Miki Yoshiki
Soichiro Senuma