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A thermal management system for electric vehicles

A thermal management system and technology for electric vehicles, applied in the field of electric vehicles, can solve the problems of battery power loss, reduce the mileage of electric vehicles, and cannot meet the heating needs of passengers in the vehicle, and achieve the effect of saving energy.

Active Publication Date: 2022-02-01
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of these have a certain loss of battery power, reducing the mileage of electric vehicles
In addition, when the external ambient temperature is low, the heating capacity of the heat pump may not be sufficient to meet the heating needs of the passengers in the vehicle

Method used

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  • A thermal management system for electric vehicles
  • A thermal management system for electric vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] refer to figure 1 , is a thermal management system for electric vehicles, including a compressor 101, a cabin condenser 103, a first throttle valve 105, a first outdoor heat exchanger 106, a second throttle valve 108, a cabin evaporator Device 109, gas-liquid separator 110, third throttle valve 111, fourth throttle valve 112, heat accumulator 31, first check valve 114, first heat exchanger 32, second check valve 116, second A solenoid valve 118, a battery heat exchange module 201, a motor heat exchange module 202, a liquid pump 203, a second external heat exchanger 205, a third one-way valve 206, a fourth one-way valve 208, and a fifth one-way valve 210 , the second solenoid valve 211 and the third solenoid valve 212;

[0027] The compressor 101, the cabin condenser 103, the first throttle valve 105, the first outdoor heat exchanger 106, the second throttle valve 108, the cabin evaporator 109, and the gas-liquid separator 110 are connected in sequence, and the third sect...

Embodiment 2

[0038] refer to figure 2 , is another thermal management system for electric vehicles. The difference between Embodiment 2 and Embodiment 1 is that: the air-conditioning heat pump system also includes a seventh three-way valve 119 and a second heat exchanger 120; the second heat exchanger The first inlet of the device 120 is connected with the outlet of the cabin condenser 103, the first outlet of the second heat exchanger 120, the first end of the second three-way valve 104 and the inlet of the third throttle valve 111 are connected; the seventh and third The first end of the through valve 119, the second end of the fifth three-way valve 115 and the outlet of the second one-way valve 116 are connected; the third end of the seventh three-way valve 119 is connected with the second inlet of the second heat exchanger 120 The second outlet of the second heat exchanger 120, the second end of the seventh three-way valve 119 and the first end of the sixth three-way valve 117 are con...

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Abstract

The invention discloses a thermal management system for an electric vehicle, which includes an air-conditioning heat pump system and a battery motor heat conduction system; the air-conditioning heat pump system includes a compressor, a cabin condenser, a first external heat exchanger, a cabin evaporator, The first heat exchanger, heat accumulator, gas-liquid separator and several valve bodies; the battery motor heat transfer system includes battery heat exchange module, motor heat exchange module, liquid pump, second external heat exchanger, second heat exchanger and a number of valve bodies; the air-conditioning heat pump system and the battery motor heat conduction system store and exchange energy through the heat accumulator and the first heat exchanger. The invention can enable the electric vehicle to realize various heat management modes such as cooling, heating, dehumidification, heat dissipation of the battery and the motor, and ensure the comfort of the cabin and the safety of the battery and the motor on the basis of saving energy.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a thermal management system for electric vehicles. Background technique [0002] With the improvement of battery technology, electric vehicles are gradually replacing traditional fuel-powered internal combustion engine vehicles and becoming the main development direction of new energy vehicles. There is a big difference in the thermal management needs of electric vehicles and internal combustion engine vehicles. Internal combustion engine vehicles use the air conditioning system to provide cooling for the cabin, and use the waste heat of the gas to heat the cabin. However, electric vehicles do not have the waste heat of gas to use, so new heating solutions must be sought. At the same time, in order to ensure the safety and life of batteries and motors, the temperature of batteries and motors must be controlled within a certain range, and efficient heat dissipation (in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60H1/00B60H1/14B60L58/26
CPCY02T10/70
Inventor 郭剑蒋方明王亦伟
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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