To suppress temperature variation in an electric motor cooling device.SOLUTION: A pump 8, which supplies a refrigerant to two electric motors 1, 2 mounted on a vehicle, is interposed between refrigerant passages 3, 4. A discharge quantity of the refrigerant by a pump 8 can be changed. A valve 9, which distributes the refrigerant the electric motors 1, 2, is interposed between the refrigerant passages 3, 4. Also, a distribution ratio of the refrigerant by the valve 9 can be changed. On the basis of output required by the electric motors 1, 2, a difference in calorific value between two electric motors 1, 2 is calculated by a calculation part 11. On the basis of this difference in calorific value, the distribution ratio of the refrigerant is controlled by a control part 12.SELECTED DRAWING: Figure 1
【課題】電動機の冷却装置に関し、温度のばらつきを抑制する。【解決手段】車両に搭載された二つの電動機1,2に冷媒を供給するポンプ8を冷媒通路3,4に介装させる。ポンプ8による冷媒の吐出量は、変更可能とする。冷媒を電動機1,2に分配するバルブ9を冷媒通路3,4に介装させる。バルブ9による冷媒の分配率も変更可能とする。電動機1,2に要求される出力に基づき、算出部11で二つの電動機1,2の発熱量差を算出する。この発熱量差に基づき、制御部12で冷媒の分配率を制御する。【選択図】図1
ELECTRIC MOTOR COOLING DEVICE
電動機の冷却装置
2020-10-08
Patent
Electronic Resource
Japanese