Title:
非水電解質二次電池
Document Type and Number:
Japanese Patent JP6585365
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To actuate a current blocking mechanism in a short time by making voltage increase during over-charge steeper to accelerate reaction of an over-charge inhibitor, in a non-aqueous electrolyte secondary battery.SOLUTION: A lithium ion secondary battery, which is a non-aqueous electrolyte secondary battery, comprises: a cathode plate 60 having a cathode active material combined layer 64 containing lithium transition metal compound and lithium carbonate; an anode plate 50 having an anode active material combined layer 54 containing an anode active material; and a battery case accommodating the cathode plate 60, the anode plate 50, and a non-aqueous electrolyte. A conductive passage 70 for extracting current out of the battery from the cathode plate 60 is provided with a current blocking mechanism 100 that blocks current in correspondence with an increase in pressure in the battery case. An amount of lithium carbonate per volume in the battery case is 7 mg/cmor larger but 11 mg/cmor smaller. The bulk density of the cathode active material combined layer is 2.2 to 2.9 g/cm, and the percentage of void of the cathode active material combined layer is 30 to 40%.SELECTED DRAWING: Figure 2
Inventors:
Ken Kaneko
Keisuke Minami
Daisuke Ikeda
Toyoki Fujiwara
Toshihiro Takada
Inukai Hiroshi
Yasushi Tsuchida
Tokunaga Keishi
Akira Kiyama
Keisuke Minami
Daisuke Ikeda
Toyoki Fujiwara
Toshihiro Takada
Inukai Hiroshi
Yasushi Tsuchida
Tokunaga Keishi
Akira Kiyama
Application Number:
JP2015072244A
Publication Date:
October 02, 2019
Filing Date:
March 31, 2015
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
TOYOTA JIDOSHA KABUSHIKI KAISHA
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M10/0525; H01M2/34; H01M4/13; H01M4/587; H01M4/62; H01M10/0568; H01M10/0569
Domestic Patent References:
| JP2014139892A | ||||
| JP2009277397A |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office