Vehicle thermal management system, control method thereof and vehicle

Abstract

The invention relates to a vehicle thermal management system, a control method thereof and a vehicle. The vehicle heat management system comprises a battery and electric drive heat management system and an engine and warm air core body heat management system. The battery and electric drive heat management system exchanges heat with the air conditioning system and the engine and warm air core bodyheat management system through the first heat exchanger and the second heat exchanger respectively; the engine and warm air core body heat management system comprises an engine, a second heat exchanger, a first radiator and a warm air core body used for heating a passenger compartment and has a first communication mode, a second communication mode, a third communication mode and a fourth communication mode, and in the first communication mode, the engine, the second heat exchanger, the warm air core body and the first radiator are connected in series to form a loop; in the second communicationmode, the engine, the second heat exchanger and the first radiator are connected in series to form a loop; in the third communication mode, the engine, the warm air core body and the first radiator are connected in series to form a loop; and in the fourth communication mode, the engine and the first radiator are connected in series to form a loop.

Description

technical field [0001] The present disclosure relates to the field of vehicle thermal management systems, and in particular, to a vehicle thermal management system, a control method thereof, and a vehicle. Background technique [0002] The vehicle thermal management system of a hybrid vehicle includes an air conditioning thermal management system, a battery thermal management system, an electric drive thermal management system and an engine thermal management system. The existing engine thermal management circuit and the battery system circuit are relatively independent, and cannot realize the interconnection between cycles, so the engine cannot heat the battery. In addition, the existing electric drive thermal management system is independent of the air conditioner thermal management system and the battery thermal management system. The heating of the battery mainly relies on the battery heater for heating, and the heat generated by the motor or electronic control can only ...

AI Technical Summary

Problems solved by technology

The existing engine thermal management circuit and the battery system circuit are relatively independent, and the intercommunication between the circuits cannot be realized, so the heating of the battery by the engine cannot be realized

In addition, the existing electric drive thermal management system is independent of the air conditioner thermal management system and the battery thermal management system. The heating of the battery mainly depends on the battery heater for heating. Radiator for heat dissipation, resulting in waste of heat

When the cooling demand of the motor or electronic control is high, the cooling efficiency is slow and the effect is poor if only the radiator is used to cool down

In addition, the cooling of the battery mainly depends on the thermal management system of the air conditioner. Even when the cooling demand of the battery is low and the passenger compartment has no cooling demand, the thermal management system of the air conditioner needs to be activated, which also increases the energy consumption burden of the vehicle.

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