COOLING STRUCTURE OF VEHICLE POWER SOURCE UNIT

摘要

PROBLEM TO BE SOLVED: To provide a cooling structure of a vehicle power source unit capable of cooling electrical parts including a battery and an inverter with a compact structure.

SOLUTION: Electrical parts arranged on the top of battery modules 24 include: an electrical part case 33 containing the inverter 34 and a DC/DC converter 35; and heat sink units 37, 38 mounted on the electrical part case 33 at the opposite side to the battery modules 24 with respect to the electrical part case 33 and provided with heat dissipation plates 40 having a plurality of heat dissipation fins 39. A cooling path includes: a first cooling path 50 for cooling the battery modules 24 by a cooling air and a second cooling path 51 for cooling the heat sink units 37, 38 by the cooling air which has passed through the first cooling path 50.

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