| 摘要 |
PURPOSE:To shut outside moisture out during storage to increase reliability of a battery by sealing a sealed lithium battery with a multiple layer moistureproof film. CONSTITUTION:A battery 9 which uses lithium or lithium alloy as negative active material and is sealed by crimping is sealed in a bag 10 made of moistureproof film to shut outside moisture out. The film is comprised of, for example, a polyester film 11, aluminum foil 12, and polyethylene film 13 in order from the inside. The outside moisture is shut out by the aluminum foil 12. Thereby, performance deterioration of battery during storage can be prevented. |
