Closed battery module

防止在内部空间被隔板分隔的封闭型电池模块的容器外壁上形成裂纹及类似危险。分隔封闭型电池模块容器的内部空间的各个隔板具有可变形部位，在作用于容器的负荷在容器外壁上产生的应力大于允许值之前发生变形。当负荷作用于模块容器时，分隔容器内部空间的隔板限制容器外壁变形，从而使外壁可能产生大的应力。但是，当这样的负荷使隔板的可变形部位产生变形，容器外壁上产生的应力减小，从而容器外壁上形成裂纹或类似危险的可能性很小。 Cracking or the like is prevented from being formed in an outer wall (302) of a container (310) of a closed battery module (300) whose internal space is divided by partitions (312). Each partition (312) dividing the internal space of the container (310) of the closed battery module (300) is provided with a deformable portion that deforms before a stress greater than an allowable value is caused in a container outer wall (302) by load applied to the container (310). When a load is applied to the module container (310), the partitions (312) dividing the container (310) internal space restrict deformation of the container outer walls (302), so that great stress is likely to occur in the outer walls (302). However, as the deformable portion of a partition deforms due to such load, the stress caused in the container outer walls (302) decreases, so that formation of a crack or the like in the container outer walls (302) becomes less likely.