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Electric vehicle waste heat utilization variable-frequency thermal pump air conditioning system and method thereof

A technology of heat pump air conditioners and electric vehicles, which is applied in the field of automobile air conditioners, can solve the problems of unable to meet the heating needs of automobiles, consume large electric energy, and shorten the mileage of electric vehicles, so as to ensure normal operation and service life, save energy, and benefit The effect of environmental protection

Inactive Publication Date: 2015-04-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional heat pump air-conditioning system cannot meet the heating needs of the car under low temperature conditions; and the electric heating method consumes a lot of electric energy, which greatly shortens the cruising range of the electric car

Method used

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  • Electric vehicle waste heat utilization variable-frequency thermal pump air conditioning system and method thereof
  • Electric vehicle waste heat utilization variable-frequency thermal pump air conditioning system and method thereof
  • Electric vehicle waste heat utilization variable-frequency thermal pump air conditioning system and method thereof

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Embodiment

[0047] like figure 1 shown. The electric vehicle waste heat utilization frequency conversion heat pump air conditioning system of the present invention includes a refrigerant circulation circuit and a waste heat recovery circuit that can automatically switch between single-stage and double-stage compression according to environmental conditions; the refrigerant circulation circuit includes a low-pressure stage compressor 1, a first Check valve 11, four-way reversing valve 2, interior heat exchanger 12, exterior heat exchanger 10, first interior fan 22, exterior fan 21, main expansion valve 5, second one-way valve 6, The third one-way valve 7, the fourth one-way valve 8, the fifth one-way valve 9, the first three-way solenoid valve 13, the second three-way solenoid valve 14, the high-pressure stage compressor assembly 3 and the intercooler assembly 4;

[0048] The waste heat recovery circuit includes a waste heat recovery radiator 15, a waste heat discharge radiator 18, an ele...

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Abstract

The invention discloses an electric vehicle waste heat utilization variable-frequency thermal pump air conditioning system and a method thereof. The electric vehicle waste heat utilization variable-frequency thermal pump air conditioning system comprises a low-pressure-stage variable-speed horizontal vortex compressor driven by an internal alternating current motor, a high-pressure-stage compressor, an internal heat exchanger, an external heat exchanger, an internal fan, an external fan, a intercooler, a waste heat recovering loop and the like, wherein the waste heat recovering loop consists of a waste heat recovering radiator, a waste heat discharging radiator, an electric water pump, an electric element water cooling device and the like; the waste heat recovering radiator is arranged in front of the external heat exchanger; in a heating cycle, the temperature around the external heat exchanger is raised through heat discharged by the waste heat recovering radiator, so that the working condition of a thermal pump is improved. By adopting the system, cooling in an optimal way in summer and single-stage heating under a general working condition and dual-stage heating under a low-temperature condition in winter are realized for an electric vehicle; meanwhile, the waste heat of electric elements on the electric vehicle can be used for melting frost on the external heat exchanger, so that the running condition of an air conditioner during heating is improved, and the running efficiency of the air conditioning system is increased.

Description

technical field [0001] The invention relates to the field of automobile air conditioning, in particular to an electric vehicle waste heat utilization frequency conversion heat pump air conditioning system and a method thereof. Background technique [0002] Today, with increasing emphasis on environmental protection, electric vehicles are receiving more and more attention because of their advantages in energy security, environmental protection and sustainable development. On the one hand, the existing automotive air-conditioning system has relatively low energy efficiency, and on the other hand, it uses engine waste heat as a heat source for heating in winter, which cannot be applied to the heating demand of electric vehicles. [0003] At present, electric vehicles mainly use traditional heat pump air-conditioning systems or electric heating methods to heat the interior of the vehicle. However, the traditional heat pump air-conditioning system cannot meet the heating needs o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B27/02F25B41/04F25B41/20
CPCF25B13/00F25B27/005F25B27/02F25B47/00F25B2347/00F25B41/20Y02A30/274
Inventor 杜群贵彭庆红
Owner SOUTH CHINA UNIV OF TECH
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