Heat management system of hybrid electric vehicle

Abstract

The invention discloses a heat management system of a hybrid electric vehicle. According to the heat management system of the hybrid electric vehicle, by using two four-way valves, an engine cooling system, an intercooling system, a heating system, a heavy-current system cooling system, a battery cooling system and an air conditioning system are integrated into a more efficient system; when a battery needs to be heated, waste heat of a heavy-current system, an HVH or an engine is effectively utilized to heat the battery by controlling on and off of related passages of the four-way valves and three-way valves; when the battery needs to be cooled, the battery is cooled by using different modes such as heavy-current heat radiator and a battery chiller according to a cooling demand of the battery. According to the heat management system of the hybrid electric vehicle, the function of a system part can be furthest developed, the waste heat of the system can be effectively utilized, the power consumption of the system can be reduced, and the pure electric driving range can be increased.

Description

technical field [0001] The invention belongs to the thermal management field of a hybrid vehicle, in particular to a thermal management system of a plug-in hybrid vehicle. Background technique [0002] With the implementation of the "double points" policy and the downturn of subsidies for new energy vehicles, hybrid vehicles are bound to enter a period of rapid development. At present, the thermal management system development of hybrid vehicles is only based on meeting the demand, but the waste heat utilization and energy management of the whole vehicle are not good enough. The present invention designs the thermal management system according to the different requirements of the heating components of the whole vehicle. It also maximizes the use of waste heat in the system. [0003] The thermal management system in this paper includes engine, transmission, water-cooled intercooler, turbocharger, power battery, DCDC, drive motor, motor controller and other heat-generating co...

AI Technical Summary

Problems solved by technology

In this invention, each system is completely independent, although mutual influence is avoided, but the waste heat of the system is hardly utilized

[0006] Most of the current hybrid models have a hybrid mode, and the plug-in hybrid models also have a pure electric drive mode. However, the systems of the existing hybrid models are basically independent of each other. When the battery needs to be heated or the passenger compartment needs to be heated At this time, the waste heat of the system cannot be effectively used, resulting in a waste of energy and an increase in system power consumption. Therefore, it is necessary to propose a more optimized technical solution to solve the problems existing in the current hybrid thermal management system.

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