Heat management system of hybrid electric vehicle

A thermal management system, hybrid technology, applied in electric vehicles, vehicle components, vehicle energy storage, etc., can solve the problems of increased system power consumption, unutilized system waste heat, energy waste, etc., to reduce system power consumption, improve Energy efficiency, the effect of reducing the number of starts

Active Publication Date: 2019-04-05
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Heat management system of hybrid electric vehicle
  • Heat management system of hybrid electric vehicle
  • Heat management system of hybrid electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Embodiment 1: This embodiment is a plug-in hybrid vehicle thermal management system, including an engine cooling system, an inter-cooling system, a heating system, a power system cooling system, a battery cooling system, and an air conditioning system. Such as figure 1 As shown, a four-way valve V4 is provided between the power system cooling system and the battery cooling system to communicate two circuits, and the four-way valve V4 is provided downstream of the drive motor of the power system cooling system and the Upstream of the electronic water pump of the battery cooling system, according to the requirements of battery cooling and heating, by switching the mode of the four-way valve V4, the power system cooling system and the battery cooling system are connected or disconnected to maximize the function of the components , Reduce system power consumption. A four-way valve V2 is provided between the power system cooling system and the heating system to connect two ci...

Example Embodiment

[0074] Example 2: Such as Figure 4 As shown, the function of the three-way valve V5 in Embodiment 1 is to prevent the antifreeze liquid from passing through when the charger 21 and the battery cooler 22 are not working, so as to reduce the water resistance of the circuit, but it can also meet the water flow in the battery cooling circuit. On the basis of requirements, the three-way valve V5 was cancelled to reduce the cost of parts and the complexity of the system.

Example Embodiment

[0075] Example 3: Such as Figure 5 As shown, for hybrid models without an external charging mode, there is no charger. Therefore, after the cancellation of the charger 21 on the basis of the implementation case 2, the system can be adapted to the general hybrid models. The working mode can be referred to Implementation case 1.

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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...

Claims

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Application Information

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IPC IPC(8): B60H1/00B60H1/03B60H1/14F01P11/00F01P5/10F02B29/04
CPCF01P5/10F01P11/00F02B29/04B60H1/00278B60H1/004B60H1/03B60H1/143Y02T10/12
Inventor 刘志黄国平康华东
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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