bateria coberta por película e método para blindar a mesma

摘要

A film covered battery 1 has a battery element 10 equipped with a plurality of electrode plates laminated via separators, and an exterior film 40 for hermetically sealing the battery element 10. A cover film 50 is attached to a hollow 51 present in predetermined regions 60, 62 set on a surface of the exterior film 40. The predetermined regions 60, 62 are regions obtained by removing overlap regions 61 from projected regions obtained by projecting the electrode plates to the surface of the exterior film 40, the overlap regions being regions where the projected regions overlap with members 13a interposed between the electrode plates at the outermost layers and the exterior film 40. It is possible to cover the hollow· 51 on the surface, without increasing the thickness of the film covered battery 1.