BATTERY PACK

In a battery pack, a heat-resistant cap is coupled to an end of a battery block including battery cells each having a discharge valve on an end surface thereof and arranged in plural rows. A valve-side end surface of battery cell is arranged at a first end of the battery block to which heat-resistant cap is coupled. Heat-resistant cap includes closing plate providing a first discharge gap between the closing plate and end surface of the battery block, a peripheral wall coupled to a periphery of closing plate and providing a second discharge gap between the peripheral wall and an outer circumference of the battery block, a partition wall disposed between end surfaces of adjacent battery cells and partitioning the first discharge gap into portions at end surfaces of battery cells.