Coolant circuit operating method for heating interior of hybrid vehicle, involves separating heat exchanger of electrical assembly from coolant circuit by bypass valves in operating phase below predefined coolant temperature

摘要

The method involves connecting a heat exchanger (1) of an electrical assembly (9) with a coolant circuit (4) by bypass valves (7, 8), where the assembly is provided with high heat capacity. The heat exchanger is separated from the coolant circuit by the valves in an operating phase below a predefined coolant temperature. A power electronics unit e.g. pulse-controlled inverter, and/or an electrical machine e.g. propulsion motor, is separated from the circuit by the valves. The coolant circuit is connected with an interior heater (13). An independent claim is also included for a device for heating a vehicle interior of a motor vehicle i.e. hybrid vehicle.