Patent ID: 7240752

Claim:
A vehicular electrical equipment unit heating and cooling system comprising: a vehicular electrical equipment unit including at least a battery and an inverter which are accommodated in a first air passageway in the interior of a housing; an air inlet through which air in a passenger compartment is admitted to the first air passageway; an air outlet through which air flowing in the first air passageway is allowed to be discharged to the outside of the electrical equipment unit; a second air passageway provided adjacent to the electrical equipment unit and directly connected to an upstream end and a downstream end of the first passageway, wherein the second air passageway is adapted to be selectively connected to and cut off from the first air passageway to define a closed circuit when connected to the first air passageway; and a blower section for generating a flow of air in the first air passageway, wherein when cooling the battery, air in the passenger compartment is induced from the air inlet into the first air passageway as a cooling medium, and after being directed from the battery toward the inverter, the air is discharged from the air outlet, and when heating the battery, air in a closed circuit made by connecting the second air passageway to the first air passageway is circulated within the closed circuit.