PROBLEM TO BE SOLVED: To provide a battery module which includes a resin case and inhibits variations of battery cell positions.SOLUTION: A battery module comprises: battery cells 1; and a resin case 5 which houses the battery cells 1. A support wall 51 which receives loads of the battery cells 1 is provided at the case 5. A reinforcement part 52 having an arch structure is provided on the support wall 51.SELECTED DRAWING: Figure 2
