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 thermal management system comprises a battery and electric drive thermal management system and an engine thermal management system. The air conditioning system exchanges heat with the battery and electric drive heat management system through a heat exchanger; the engine heat managementsystem comprises an engine cooling liquid flow path trunk, a first engine cooling liquid flow path branch and a second engine cooling liquid flow path branch, an engine and a first radiator are arranged on the engine cooling liquid flow path main circuit. The engine cooling liquid flow path main path is selectively communicated with the engine cooling liquid flow path first branch path or the engine cooling liquid flow path second branch path, and the engine cooling liquid flow path first branch path exchanges heat with the battery and electric drive heat management system through a heat exchanger. When the vehicle is in a hybrid drive mode, the battery may be heated with the engine.

Description

technical field [0001] The present disclosure relates to the field of vehicle thermal management systems, in particular, to a vehicle thermal management system, a control method thereof, and a vehicle. Background technique [0002] In the vehicle thermal management system of hybrid electric vehicles, it includes air-conditioning thermal management system, battery thermal management system, electric drive thermal management system and engine thermal management system. 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. The radiator dissipates hea...

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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