Honda Motor Co., Ltd.
Battery pack for electric vehicle

Abstract:

In a battery pack for an electric vehicle, by fixing a lid member to plural fixing portions provided on a bottom wall of a battery case, a cooling medium jacket is formed between a lower face of the bottom wall and an upper face of the lid member. Thickness of the battery case in the fixing portion is formed larger than thickness thereof around the fixing portion. The fixing portion includes a bulge portion bulging upward toward a lower face of a battery module. The lower face thereof includes a recess portion recessed upward, and a projecting portion projecting downward. Since the bulge portion is disposed at a position opposing the recess portion. Accordingly, it is possible to form the cooling medium jacket by strongly fixing the lid member to the lower face of the bottom wall while avoiding increase in the vertical dimension of the battery pack.