Power Storage Device, Heat Transfer Body, And Package

Abstract: This power storage device comprises: an electrode body; an exterior body including an exterior film sealing the electrode body; and a heat transfer body attached to at least a portion of the surface of the exterior body. The exterior film includes at least a base material layer, an exterior barrier layer, and a heat-fusible resin layer. The exterior barrier layer is constituted of a material containing a metal, the heat transfer body includes a heat transfer layer constituted of a material containing a metal, and the thickness of the heat transfer layer is equal to or greater than the thickness of the exterior barrier layer.

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