| 摘要 |
An outer casing of a non-aqueous electrolyte battery is capable of being mass-produced as well as thin and resistant to damage. The outer casing 4 comprises a casing body 4 a and a cover 4 b. After being internally packaged, a non-aqueous electrolyte battery 2 , e.g. a lithium-ion polymer secondary battery, is sandwiched between the casing body 4 a and the cover 4 b, which are then joined together integrally. The cover 4 b is formed from a film-shaped sheet material 4 c of a synthetic resin to make the outer casing 4 thin. The casing body 4 a and the cover 4 b have a casing body outer peripheral frame 9 and a cover outer peripheral frame 10 , respectively, formed by injection molding. Joint portions of the casing body 4 a and the cover 4 b have stepped portions 9 a and 10 a, respectively. The stepped portions ensure the mechanical strength against shock and impact. With this structure, the outer casing 4 is resistant to damage.
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