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

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

Active Publication Date: 2022-07-12
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

Examples

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Effect test

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 is equipped with a compression-expansion integrated machine, and has two modes of refrigeration and heating, and the switching of the two modes is performed by a four-way reversing valve and two A three-way solenoid valve to achieve.

[0077] The present invention is a transcritical carbon dioxide electric passenger car air conditioning system, comprising: 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-expansio...

Embodiment 2

[0082] The present invention is a transcritical carbon dioxide electric passenger car air conditioning system. In the 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 from the indoor heat exchanger 11, the first channel formed by the communication between 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- Compression is performed in the first passage of the integrated expansion 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 the communication between 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 is subcool...

Embodiment 3

[0085] The present invention is a transcritical carbon dioxide electric passenger car air conditioning system. 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 second port and the fourth port of the four-way reversing valve 5 to form a third channel for gas-liquid separation, and then CO 2 The fluid flows through the first channel of the regenerator 12 and enters the first channel of the compression-expansion integrated 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 formed by the communication between 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...

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Abstract

The invention discloses a transcritical carbon dioxide electric passenger car air conditioning system and a control method. The system comprises: an outlet of a compressor is connected to a first port of a four-way reversing valve, and a second port of the four-way reversing valve is connected to one end of an outdoor heat exchanger , the other end of the outdoor heat exchanger is connected to the inlet of the expander through the second channel of the regenerator; the outlet of the expander is connected to the first port of the first three-way solenoid valve; the second port of the first three-way solenoid valve is connected to the first port of the first three-way solenoid valve. The second port of the two-three-way solenoid valve, the first port of the second three-way solenoid valve is connected to the third port of the four-way reversing valve through the indoor heat exchanger, and the fourth port of the four-way reversing valve is connected to the gas-liquid separator The inlet and the outlet of the gas-liquid separator are connected to the inlet of the compressor through the first passage of the regenerator. Using natural working medium CO 2 As a refrigerant, it solves the technical problem that the existing halogenated hydrocarbon refrigerants pollute the environment.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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