| 摘要 |
It is aimed at simplifying an assembly operation of a battery pack while providing a constitution in which heat generation components are efficiently cooled. Solution to Problem A battery pack 100 includes a plurality of unit cells 11 whose exterior is extended in one direction and formed in an approximately cylindrical shape, a first external case 12A whose external shape is formed in an approximately rectangular shape, and in which a plurality of approximately cylindrical battery storage sections 13 that individually store the plurality of unit cells 11 are provided on an inner surface, and a second external case 12B which is configured to include the battery storage sections 13 that individually store the plurality of unit cells 11 on an inner surface, join the first external case 12A, and hold the unit cells 11 in such a manner as to sandwich the unit cells 11 between both sides in a longitudinal direction, and the second external case 12B whose external shape is formed in an approximately rectangular shape, and in which a gap GP is provided between the battery storage sections 13 that are adjacently disposed. |
