Vehicle power source device wherein cooling air is introduced into battery casing through opening formed through vehicle floor

摘要

An electric power source device including a plurality of battery cells accommodated within a battery casing installed on an automotive vehicle, such that the battery cells are cooled air introduced from a compartment of the vehicle into the battery casing, wherein the battery casing is disposed adjacent to the vehicle compartment and is generally isolated from the compartment by a floor or covering member which partially defines the compartment or covers the battery casing, and the floor or covering member has an inlet of an air intake passage, through which the air is introduced into the battery casing, for cooling the battery cells.