BATTERY PACK

The invention is to provide a battery pack capable of suppressing a chain of exothermic reactions. This battery pack 10 has a plurality of battery stacks 30, a case 20, and heat shielding covers 60. The case contains the plurality of battery stacks. The heat shielding covers are disposed so as to expose, inside the case, the outer surface of at least one battery stack 31 among the plurality of battery stacks and cover the outer surfaces of battery stacks 32 and 33 which are adjacent to the exposed battery stack. The difference obtained by subtracting the extracted heating value from a heating value generated during heating is greater in the battery stack exposed from the heat shielding covers than in the battery stacks covered by the heat shielding covers. 提供一种能够抑制发热反应的连锁的电池组。电池组(10)具有多个电池堆(30)、壳体(20)、以及隔热罩(60)。壳体用于收容多个电池堆。隔热罩以使多个电池堆中的至少1个电池堆(31)的外表面在壳体内露出、且覆盖与露出的电池堆相邻的电池堆(32、33)的外表面的方式配置。从隔热罩露出的电池堆与被隔热罩覆盖的电池堆相比，发热之际的发热量减去排热量而得到的差值较大。