BATTERY PACK AND MANUFACTURING METHOD THEREFOR

Provided is a battery pack that is given a function for hindering a rise in secondary battery cell temperature by a simple technique. A battery pack includes a battery assembly (10), a heat radiation molding (20) being molded in advance and having flexibility, and an external case housing the battery assembly (10). The battery assembly (10) includes at least one secondary battery cell (1) and a battery holder (11) to hold and house the at least one secondary battery cell (1). A heat radiation molding (20) covers a surface of the at least one secondary battery cell (1) and is designed to melt in response to heat generated from the at least one secondary battery cell (1). As compared with the conventional technique of putting a potting resin throughout a battery assembly, the configuration described above enables any portion to have a heat radiation property by disposing the heat radiation molding (20) at a portion required to have the heat radiation property. This contributes to a reduction in volume of the heat radiation molding (20) and a reduction in weight of the battery pack, enabling simplification of a manufacturing process for the battery pack.