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Cooling system for inverter unit used in hybrid vehicle
Published October 13, 1999 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Autumn Conference
A new cooling system for an inverter unit used in a hybrid vehicle has been developed. Since the unit is installed near heat-generation components in the engine room, the electrical parts, especially microcomputers, in the unit must be kept cool. For cooling, the microcomputers mounted on a printed-circuit assembly, they are therefore located on a thermally conductive sheet. And simulation of heat transfer and thermal fatigue lifetime showed that microcomputer''s lifetime of the new cooling system is ten times longer than that of a conventional cooling system.