Title:
【発明の名称】非水電解質二次電池
Document Type and Number:
Japanese Patent JP3103899
Kind Code:
B2
Abstract:
PURPOSE:To prevent the heat generation with quick temperature rise and the relatively quick damage even if over-charging is performed with high current by forming a part, which is coated with lithium carbonate, in the surface of a positive electrode mainly composed of lithium compound oxide. CONSTITUTION:A positive electrode 2, which are mainly composed of LixMO2, and a negative electrode 2, which can be doped and undoped with lithium, are wound through a eparators 3, and the positive electrode 1 and the negative electrode 2 are housed in a battery can 5 under the condition that insulating plates 4 are placed in the upper and the lower of the winding body to form a nonaqueous electrolyte secondary battery. M means transition metal, and at least one kind of Co and Ni is desirable, and 0.05<=x<=1.10. Furthermore, a current cutting thin plate 8 to be pushed up by the pressure rise inside of a battery is comprised. The surface of the positive electrode 2 is coated with lithium carbonate, and even if over-charging is performed with high current abnormal reaction inside of the battery with over-charging is prevented.
More Like This:
Inventors:
Yoshikatsu Yamamoto
Shigeru Fujita
Shigeru Fujita
Application Number:
JP13068291A
Publication Date:
October 30, 2000
Filing Date:
May 02, 1991
Export Citation:
Assignee:
ソニー株式会社
International Classes:
C01B31/02; H01M4/13; H01M4/525; H01M10/05; H01M10/0566; (IPC1-7): H01M10/40; H01M4/02; H01M4/04; H01M4/58
Domestic Patent References:
| JP487152A | ||||
| JP4206267A | ||||
| JP4328278A | ||||
| JP60127669A | ||||
| JP349155A |
Attorney, Agent or Firm:
Akira Koike (3 others)