Vehicle drive device

A vehicle drive device comprising:

• a drive shaft to be driven by a drive source;
• a rotation transmission unit that transmits rotation input from the drive shaft to a wheel;
• a mechanical oil pump that generates a hydraulic pressure by the rotation of the drive shaft;
• an electric oil pump that electrically generates a hydraulic pressure;
• a hydraulic control device that supplies lubricating oil to the rotation transmission unit based on the hydraulic pressures generated by the mechanical oil pump and the electric oil pump;
• a drive circuit that controls electric power to be supplied to the electric oil pump;
• and
• a control unit that is able to control a drive condition of the drive circuit, wherein
• the control unit stops the drive circuit when a temperature of refrigerant for cooling the drive circuit is equal to or higher than a first temperature,
• the rotation transmission unit includes a transmission mechanism that shifts the rotation input from the drive shaft and transmits the rotation to the wheel, and a starting clutch interposed between the drive shaft and the transmission mechanism and to be engaged at a time of starting,
• the hydraulic control device supplies the lubricating oil to the starting clutch based on the hydraulic pressures generated by the mechanical oil pump and the electric oil pump,
• the control unit performs a heat generation amount reduction process for reducing an amount of heat generated by the drive circuit when the temperature of the refrigerant is equal to or higher than a second temperature that is lower than the first temperature,
• the control unit performs, as the heat generation amount reduction process, a process for reducing the hydraulic pressure generated by the electric oil pump by driving the mechanical oil pump through drive of the drive shaft by the drive source when the temperature of the refrigerant is equal to or higher than the second temperature,
• the hydraulic control device includes a source pressure generation unit that generates a source pressure based on the hydraulic pressure generated by at least one of the mechanical oil pump and the electric oil pump, and
• the control unit performs, as the heat generation amount reduction process, a process for preventing the hydraulic pressure generated by the electric oil pump from being used for generation of the source pressure when the temperature of the refrigerant is equal to or higher than a third temperature that is higher than the second temperature.