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Transcritical carbon dioxide electric passenger car air-conditioning system and control method

A carbon dioxide and electric passenger car technology, applied in the direction of vehicle parts, component optimization, high-efficiency regulation technology, etc., can solve the problems of poor performance of the refrigeration system, pollution of the environment by halogenated hydrocarbon refrigerants, etc., achieve compact and light structure, save battery power consumption, The effect of increasing endurance

Active Publication Date: 2021-04-27
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an air-conditioning system and control method for a transcritical carbon dioxide electric passenger car, which adopts a green refrigeration method to solve the technical problem of environmental pollution caused by halogenated hydrocarbon refrigerants, and proposes a solution to the problem of poor performance of the transcritical carbon dioxide refrigeration system The solution of using frequency conversion compression expansion machine in the system

Method used

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  • Transcritical carbon dioxide electric passenger car air-conditioning system and control method
  • Transcritical carbon dioxide electric passenger car air-conditioning system and control method
  • Transcritical carbon dioxide electric passenger car air-conditioning system and control method

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Embodiment 1

[0076] see figure 1 As shown, the present invention provides a transcritical carbon dioxide electric passenger car air-conditioning system, the air-conditioning system has a compression-expansion integrated machine, has two modes of cooling and heating, and the switching of the two modes is controlled by a four-way reversing valve and two A three-way solenoid valve to achieve.

[0077] The air-conditioning system of a transcritical carbon dioxide electric passenger car of the present invention comprises: an outdoor heat exchanger 1, a compressor 2, a motor 3, an expander 4, a four-way reversing valve 5, an electronic expansion valve 6, a one-way valve 7, a gas-liquid Separator 8, indoor fan 9, PTC electric heating device 10, indoor heat exchanger 11, regenerator 12, first three-way solenoid valve 13, second three-way solenoid valve 14, outdoor fan 16. The compressor 2 , the motor 3 and the expander 4 are assembled into a coaxial compression-expansion integrated machine 15 . ...

Embodiment 2

[0082] The present invention is a transcritical carbon dioxide electric passenger car air-conditioning system. In cooling mode, the indoor heat exchanger 11 is used as an evaporator, and the outdoor heat exchanger 1 is used as a gas cooler.

[0083] CO 2 After flowing out of the indoor heat exchanger 11, the first channel formed by connecting the third port and the fourth port of the four-way reversing valve 5 enters the gas-liquid separator 8 for gas-liquid separation, and enters the compression- Compress in the first channel of the expansion integrated machine 15; the compressed high-temperature and high-pressure CO 2 The fluid enters the outdoor heat exchanger 1 through the second channel formed by connecting the first port and the second port of the four-way reversing valve 5, and performs forced convection heat exchange with the outdoor air under the action of the outdoor fan 16, and the cooled CO 2 The fluid passes through the second channel of the regenerator 12 to be ...

Embodiment 3

[0085] In the air conditioning system of a transcritical carbon dioxide electric passenger car according to the present invention, in the heating mode, the indoor heat exchanger 11 is used as a gas cooler, and the outdoor heat exchanger 1 is used as an evaporator.

[0086] CO 2 After the fluid flows out from one end of the outdoor heat exchanger 1, it enters the gas-liquid separator 8 through the third channel connected to the second port and the fourth port of the four-way reversing valve 5 for gas-liquid separation, and then the CO 2 The fluid flows through the first channel of the regenerator 12 and enters the first channel of the compression-expansion machine 15 for compression; the compressed high-temperature and high-pressure CO 2 The fluid enters the indoor heat exchanger 11 through the fourth channel connected by the first port and the third port of the four-way reversing valve 5, and performs forced convection heat exchange with the indoor air; the cooled CO 2 The fl...

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Abstract

The invention discloses a transcritical carbon dioxide electric passenger car air conditioning system and a control method. According to the system, an outlet of a compressor is connected with a first port of a four-way reversing valve, a second port of the four-way reversing valve is connected with one end of an outdoor heat exchanger, and the other end of the outdoor heat exchanger is connected with an inlet of an expansion machine through a second channel of a heat regenerator; an outlet of the expansion machine is connected with a first port of the first three-way electromagnetic valve; a second port of the first three-way electromagnetic valve is connected with a second port of the second three-way electromagnetic valve, a first port of the second three-way electromagnetic valve is connected with a third port of the four-way reversing valve through the indoor heat exchanger, a fourth port of the four-way reversing valve is connected with an inlet of the gas-liquid separator, and an outlet of the gas-liquid separator is connected with an inlet of the compressor through a first channel of the heat regenerator. A natural working medium CO2 is adopted as a refrigerant, and the technical problem that an existing halogenated hydrocarbon refrigerant pollutes the environment is solved.

Description

technical field [0001] The invention belongs to the field of passenger car air conditioning, and in particular relates to a transcritical carbon dioxide electric passenger car air conditioning system and a control method. Background technique [0002] Nowadays, the enhancement of people's awareness of environmental protection, the shortage of energy sources and the turmoil in the international situation make the development of pollution-free new energy vehicles become the focus of international and social attention. For the sustainable strategy, the development of clean, efficient and non-polluting new energy vehicles has become the only way for the development of future transportation tools. Compared with traditional fuel vehicles, pure electric vehicles have obvious advantages of low carbon, environmental protection and energy saving, which makes electric vehicles receive more and more attention. Electric vehicles are the development direction of future automobiles, and e...

Claims

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Application Information

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IPC IPC(8): B60H1/00B60H1/22B60H1/32
CPCB60H1/00007B60H1/00485B60H1/2215B60H1/3204B60H1/3222B60H1/3223B60H1/00878Y02T10/88
Inventor 曹锋王海丹宋昱龙
Owner XI AN JIAOTONG UNIV
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