Method of manufacturing nonaqueous electrolyte secondary battery
AssigneeAutomotive Energy Supply Corporation
InventorsHidetoshi TAMURA, Ippei Waki, Tatsuji NUMATA, Hiroshi YAGETA
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Abstract
An organic acid included in a nonaqueous electrolyte solution of a secondary battery is reduced. During preparation of a film-covered battery 1, the nonaqueous electrolyte solution is injected into an covering 5 of the film-covered battery 1 having an electrode including: the electrode active material, the binder, and the organic acid, the organic acid in the nonaqueous electrolyte solution is decomposed by electrical charging of a battery until a voltage level is equal to or above a decomposition voltage of the organic acid, and the gas that is produced by decomposition is degassed from the cut portion 6 of the covering 5.
Claims2
A method of manufacturing a nonaqueous electrolyte secondary battery, comprising:
- storing a power generating element having an electrode containing an electrode active material, a binder, and an organic acid in an covering;
- injecting a nonaqueous electrolyte solution into the power generating element;
- electrical charging of the power generating element until a voltage level is equal to or above a decomposition voltage of the organic acid in the nonaqueous electrolyte solution;
- and
- degassing a gas that is produced by decomposition of the organic acid to out of the covering.
Dependencies are inferred from the claim text.