BATTERY PACK

A battery pack includes: a plurality of battery cells (100) arranged side by side along a first direction; and a case (200) provided with an inner space for accommodating the plurality of battery cells (100). The case (200) includes a structural member (210, 220, 230) for securing strength of the case (200). The structural member (210, 220, 230) includes a plate-shaped portion (220, 230) having a thickness. A discharging path (220B, 232) through which a gas in the inner space is dischargeable is formed within the thickness of the plate-shaped portion (220, 230) so as to extend in an extending direction of the plate-shaped portion (220, 230).