Title:
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP3230279
Kind Code:
B2
Abstract:
PURPOSE: To prevent a battery from breakage certainly with actuation of an anti- explosion valve by furnishing an electric isulative layer on that surface of valve, at least a part thereof, on the side which receives the battery internal pressure besides the lead connection part.
CONSTITUTION: A negative electrode 1 formed by coating a negative electrode current collector 9 with a negative electrode active material and a positive electrode 2 prepared by coating a positive electrode current collector 10 with a positive electrode active material are wound round while a separator 3 is interposed and accommodated in a battery can 5 in the condition that an insulative substance 4 is laid on and under this roll obtained. A positive electrode lead 12 is installed as welded fast to an anti- explosive valve 8 made in aluminum and connected electrically with a battery lid 7 through this valve 8. When the battery internal pressure rises, the valve 8 is heaved to make deformation, and the lead 12 is cut while the part welded to the valve 8 is left. An insulative layer 13 is formed on the surface of valve 8 other than the lead connection part, at least a part thereof, on the side which receives the battery internal pressure. This prevents the battery certainly from temp. rise and breakage.
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Inventors:
Masayuki Endo
Application Number:
JP16008692A
Publication Date:
November 19, 2001
Filing Date:
May 28, 1992
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H01M10/05; H01M10/058; H01M50/574; (IPC1-7): H01M2/34; H01M2/12; H01M10/40
Domestic Patent References:
| JP574432A | ||||
| JP562956A | ||||
| JP2112151A | ||||
| JP2288063A | ||||
| JP232660U | ||||
| JP1174857U | ||||
| JP424262U |
Attorney, Agent or Firm:
Akira Koike (2 outside)