Motor unit

A motor unit, comprising:

• a case comprising a motor chamber and a gear chamber;
• a motor positioned in the motor chamber;
• a gear positioned in the gear chamber and engaged with a rotation shaft of the motor;
• and
• an oil supply device configured to supply oil to the motor chamber and the gear chamber, wherein the oil supply device comprises:
• an oil pump;
• an oil cooler;
• a first oil passage comprising a first valve, wherein the first oil passage is configured such that the oil supplied from the oil pump flows through the first oil passage when the first valve is open, and wherein the first oil passage connects the oil pump, an oil supply port of the gear chamber, and a first end of an inner passage of the oil cooler;
• and
• a second passage comprising a second valve, wherein the second passage is configured such that the oil supplied from the oil pump flows through the second oil passage when the second valve is open, and wherein the second oil passage connects the oil pump, an oil supply port of the motor chamber, and a second end of the inner passage.