| 摘要 |
PROBLEM TO BE SOLVED: To perform miniaturization without damaging the cooling performance of a power module in an SHEV system. SOLUTION: The reflux diode FWD of an inverter 15 on a power generator side and the switching element IGBT of a motor side inverter 16 are arrayed on one straight line on a cooling plate 21 for each phase, and coolant piping 22 is turned to a meandering structure so as to pass through only a part right below the straight array for each phase. Thus, the passage length of a coolant flow passage is shortened, the number of times of bending the flow passage is reduced, power for coolant distribution by a cooling pump is reduced, the size of a cooling system is reduced, and costs are lowered. |
