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A thermal management system for a pure electric vehicle

A pure electric vehicle and management system technology, applied in the field of pure electric vehicle thermal management system, can solve problems such as single function mode

Active Publication Date: 2022-04-22
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vehicle thermal management system only provides the realization of individual functions, and the function mode is single

Method used

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  • A thermal management system for a pure electric vehicle
  • A thermal management system for a pure electric vehicle
  • A thermal management system for a pure electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The first typical embodiment of the present invention is Figure 4 As shown, under low-temperature driving conditions, the passenger compartment is heated by the heat pump air conditioner, and the battery is heated by the waste heat of the motor. The low-temperature and low-pressure gaseous refrigerant is compressed by the compressor 1 and becomes a high-temperature and high-pressure gaseous refrigerant; when passing through the water-cooled condenser 2, it exchanges heat with the antifreeze liquid in the heating system circuit, and the high-temperature and high-pressure gaseous refrigerant becomes high-temperature and high-pressure The low-temperature antifreeze becomes a high-temperature antifreeze after heat exchange. The antifreeze in the warm air water system loop passes through the PTC heater 18 and the proportional three-way valve 19, and then reaches the warm air core 20. The warm air core 20 exchanges heat with the air entering the passenger compartment, and th...

Embodiment 2

[0040] The second typical embodiment of the present invention is Figure 5 As shown, under low-temperature driving conditions, the passenger compartment is dehumidified and heated by the heat pump air conditioner, and the battery is heated by the waste heat of the motor. The low-temperature and low-pressure gaseous refrigerant is compressed by the compressor 1 and becomes a high-temperature and high-pressure gaseous refrigerant; when passing through the water-cooled condenser 2, it exchanges heat with the antifreeze liquid in the heating system circuit, and the high-temperature and high-pressure gaseous refrigerant becomes high-temperature High-pressure liquid refrigerant, low-temperature antifreeze becomes high-temperature antifreeze after heat exchange. The antifreeze in the warm air water system loop passes through the PTC heater 18 and the proportional three-way valve 19, and then reaches the warm air core 20. The warm air core 20 exchanges heat with the air entering the p...

Embodiment 3

[0042] The third typical embodiment of the present invention is Figure 6 As shown, under high-temperature driving conditions, the passenger compartment and battery are cooled by heat pump air conditioners, and the motor is dissipated by low-temperature radiators. The low-temperature and low-pressure gaseous refrigerant is compressed by the compressor 1 and becomes a high-temperature and high-pressure gaseous refrigerant; the high-temperature and high-pressure gaseous refrigerant passes through the water-cooled condenser 2 and reaches the refrigerant four-way valve 4, and flows to the port through the four-way valve port 34 36. Arrive at the outdoor heat exchanger 8; the high-temperature and high-pressure gaseous refrigerant exchanges heat with the outside air in the outdoor heat exchanger 8, and condenses into a high-temperature and high-pressure liquid refrigerant; The coaxial tube 13 conducts heat exchange to reduce the temperature of the refrigerant and then reaches the st...

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PUM

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Abstract

The invention discloses a thermal management system for a pure electric vehicle, belonging to the field of electric vehicles, comprising: a refrigerant system loop, a warm air water system loop, a battery water system loop, a motor water system loop, a refrigerant system loop and a warm air water system Water-cooled condenser coupled with system loop, Chiller coupled with refrigerant system loop and battery water system loop, plate heat exchanger coupled with heater water system loop and battery water system loop, coupled battery water system loop with motor water system loop four-way water valve. In the vehicle thermal management system of the present invention, functional modes such as passenger compartment cooling, passenger compartment heating, passenger compartment dehumidification, battery cooling, battery heating, hybrid cooling, hybrid heating, motor cooling, and outdoor heat exchanger defrosting are independently realized At the same time, the combination of the above functional modes can also be realized at the same time; that is to say, the vehicle thermal management system of the present invention has a single functional mode and a combination of functional modes.

Description

technical field [0001] The invention belongs to the field of electric vehicles, and more specifically relates to a thermal management system for a pure electric vehicle. Background technique [0002] At present, pure electric vehicle technology is constantly developing, and its low-temperature cruising range is also receiving more and more attention. Different from traditional fuel vehicles, the cruising range of pure electric vehicles under low temperature conditions will be reduced by 40% or even half compared with normal temperature conditions. First, the lower temperature of the battery in a low-temperature environment will cause the battery capacity to decay, resulting in a reduction in the total power that the battery can eventually discharge; second, in a low-temperature environment, in order to ensure the thermal comfort of the passenger compartment, it is necessary for the battery to output power to the occupants. The cabin is heated. Therefore, under low temperat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60H1/00B60H1/22H01M10/613H01M10/615H01M10/625H01M10/6567H01M10/663
CPCB60H1/00007B60H1/00278B60H1/2221H01M10/613H01M10/615H01M10/625H01M10/6567H01M10/663B60H2001/00307Y02E60/10
Inventor 王伟民施睿汪毛毛张中亚瞿爱敬
Owner DONGFENG MOTOR CORP HUBEI