To provide a laminate exterior power storage device capable of obtaining sufficient air-tightness in a usual usage state and, in case of gas being generated inside an exterior body, exhausting the gas surely from a specific site.
In the laminate exterior power storage device, an exterior body has exterior films laminated each other which are bonded air-tight at bonding parts formed on each of outer circumferential parts, a power storage device element and an electrolyte solution are housed in a housing part formed inside the exterior body, non-bonded sites are formed on each of the outer circumferential parts of the exterior films consisting of the exterior body communicating to the housing part, surrounded by the bonded part, an intermediate film is interposed between each of the non-bonded sites of the exterior films, at least parts of a surface and a rear surface of the intermediate film are adhered to each of the exterior films, and holes penetrating the exterior films are formed in at least either of regions where the intermediate film is adhered in at least one of the exterior films.
TAGUCHI MAKOTO
YASUDA TADASHI
ANDO NOBUO
