To provide a vehicle cooling device which can suppress decrease in cooling efficiency of a motor drive device.SOLUTION: The vehicle cooling device comprises: motor drive devices 6, 16, 18; a cooling water flow channel 32 in which cooling water for cooling the motor drive device flows; an oil flow channel 34 in which oil for lubricating the interior of a speed changer 8 flows; a heat exchanger 26 which performs heat exchange between cooling water in the cooling water flow channel and oil in the oil flow channel; oil flow rate regulators 52, 54 which are provided in the oil flow channel, and can regulate a flow rate of oil flowing in the oil flow channel; and a controller 00 which controls the oil flow rate regulators. The controller controls the oil flow rate regulators so that a flow rate of oil circulating in the heat exchanger decreases in the case that a temperature of oil in the oil flow channel is higher than a temperature of cooling water in the cooling water flow channel compared to the case that a temperature of oil in the oil flow channel is lower than a temperature of cooling water in the cooling water flow channel.SELECTED DRAWING: Figure 2
【課題】モータ駆動装置の冷却効率の低下を抑制することができる車両用冷却装置を提供する。【解決手段】本発明は、モータ駆動装置6、16、18と、モータ駆動装置を冷却する冷却水が流れる冷却水流路32と、変速機8内を潤滑するオイルが流れるオイル流路34と、冷却水流路の冷却水とオイル流路のオイルとの間で熱交換を行う熱交換器26と、オイル流路に設けられ、そのオイル流路を流れるオイルの流量を調整可能なオイル流量調整装置52、54と、オイル流量調整装置を制御する制御装置00と、を備え、制御装置は、オイル流路のオイルの温度が冷却水流路の冷却水の温度よりも高い場合、オイル流路のオイルの温度が冷却水流路の冷却水の温度よりも低い場合よりも、熱交換器を流通するオイルの流量が少なくなるようにオイル流量調整装置を制御する。【選択図】図2
VEHICLE COOLING DEVICE
車両用冷却装置
2021-10-07
Patent
Electronic Resource
Japanese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F16H Getriebe , GEARING / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES |