VEHICLE POWER SOURCE UNIT COOLING STRUCTURE

摘要

An electrical component disposed on the top of battery modules 24 includes an electrical component case 33 for accommodating an inverter 34 and a DC/DC converter 35, and heat sink units 37 and 38 attached to the electrical component case 33 on the side of the electrical component case 33 opposite to the side with the battery modules 24, and constituted of a heat radiating plate 40 having a plurality of radiating fins 39. In addition, a cooling path has a first cooling path 50 for cooling the battery modules 24 using cooling wind, and a second cooling path 51 for cooling the heat sink units 37 and 38 using the cooling wind having passed through the first cooling path 50. With this arrangement, there is provided a cooling structure for a vehicle power source unit capable of cooling the battery and the electrical component including the inverter with a compact configuration.