Power transmission device and vehicle having the same

A power transmission device installed in a vehicle, comprising:

• a friction engagement element that transmits power from a motor to an axle;
• a mechanical pump that is driven by power from the motor and generates fluid pressure;
• a switching valve that is connected to a supply path connected to a fluid pressure servo of the friction engagement element, and switches between opening and closing the supply path;
• a shift valve that outputs fluid pressure generated by the mechanical pump to the supply path when a shift is made to a driving position, and drains operation fluid in the fluid pressure servo when a shift is made to a neutral position when the switching valve is in a state that closes the supply path;
• and
• an electric pump that is driven by electric power, and generates and supplies fluid pressure to the fluid pressure servo when the switching valve closes the supply path.