INTERNAL SHORT CIRCUIT EVALUATION METHOD OF BATTERY, BATTERY, BATTERY PACK, AND THEIR MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To solve a problem that, in case short circuiting takes place at the same time at a point where members of low resistance such as collectors of an electrode are opposed to each other and a point where there are members with somewhat high resistance such as electrode active materials, there are variations in points of occurrence of the short circuiting depending on tests, and heat radiation of short circuiting or safety against inner short circuiting has not been accurately evaluated.

SOLUTION: As a method for evaluating safety of a battery at the time of its short circuiting, the inner short circuiting evaluation method is used, in which, only a part with a cathode active material and an anode plate are made in electric conduction with each other, in internally short-circuiting a cathode plate and the anode plate.

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