Electric car heat pump air-conditioning system with adjustable refrigerant charging amount

A heat pump air conditioner, electric vehicle technology, applied in heating and ventilation control systems, refrigerators, refrigeration components, etc., can solve the problems of low condensing temperature, insufficient refrigerant charge, poor heating effect, etc., to improve the condensing pressure. and condensation temperature, improve heating efficiency and reduce energy consumption

Inactive Publication Date: 2013-09-18
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor heating effect caused by low system condensation pressure and condensation temperature and insufficient refrigerant charge in the heating mode of the electric vehicle heat pump air-conditioning system, and proposes an adjustable refrigerant charge The electric vehicle heat pump air-conditioning system, the device can realize the adjustment of the condensing pressure of the electric vehicle heat pump air-conditioning cooling / heating mode system and the matching of the refrigerant charge

Method used

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  • Electric car heat pump air-conditioning system with adjustable refrigerant charging amount
  • Electric car heat pump air-conditioning system with adjustable refrigerant charging amount
  • Electric car heat pump air-conditioning system with adjustable refrigerant charging amount

Examples

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Embodiment 1

[0023] An electric vehicle heat pump air conditioning system with adjustable refrigerant charge, such as figure 1 As shown, it includes: compressor 1, pressure sensor 2, outside humidity sensor 3, outside temperature sensor 4, inside temperature sensor 5, electronic control unit 6, four-way reversing solenoid valve 7, and inside heat exchanger 8 , interior heat exchanger fan 9, first one-way valve 10, second one-way valve 11, first throttle tube 12, third one-way valve 13, fourth one-way valve 14, second throttle tube 15 , the fifth one-way valve 16, the sixth one-way valve 17, the two-position three-way solenoid valve 18, the accumulator 19, the external heat exchanger fan 20, the external heat exchanger 21, and the gas-liquid separator 22.

[0024] Compressor 1 is directly driven by a DC power supply. The compressor exhaust port is connected to the four-way reversing solenoid valve 7 through an air-conditioning hose, and a pressure sensor 2 is installed in the pipeline. Liq...

Embodiment 2

[0030] An electric vehicle heat pump air conditioning system with adjustable refrigerant charge, such as figure 1 As shown, it includes: compressor 1, pressure sensor 2, outside humidity sensor 3, outside temperature sensor 4, inside temperature sensor 5, electronic control unit 6, four-way reversing solenoid valve 7, and inside heat exchanger 8 , interior heat exchanger fan 9, first one-way valve 10, second one-way valve 11, first throttle tube 12, third one-way valve 13, fourth one-way valve 14, second throttle tube 15 , the fifth one-way valve 16, the sixth one-way valve 17, the two-position three-way solenoid valve 18, the accumulator 19, the external heat exchanger fan 20, the external heat exchanger 21, and the gas-liquid separator 22.

[0031] Compressor 1 is directly driven by a DC power supply. The compressor exhaust port is connected to the four-way reversing solenoid valve 7 through an air-conditioning hose, and a pressure sensor 2 is installed in the pipeline. Liq...

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Abstract

The invention relates to an electric car heat pump air-conditioning system with an adjustable refrigerant charging amount, and belongs to the technical field of air-conditioning and cars. According to the electric car heat pump air-conditioning system, the rotary speeds of a compressor, an external heat exchanger fan and an internal heat exchanger fan can be adjusted at any time according to temperature signals of an external temperature sensor and an internal temperature sensor, therefore the system is enabled to be in an optimal working condition; a two-position three-way solenoid valve can be switched according to a pressure signal of an exhaust pressure sensor of the compressor to achieve storage and release of a refrigerant so as to achieve matching of refrigerant charging amounts in refrigerating and heating modes; a system condensing pressure is reduced in the refrigerating mode to achieve a pressure protection effect; and the system condensing pressure is increased in the heating mode to increase the system heating capacity and improve the heating efficiency of a heat pump air conditioner. Therefore, the energy consumption is reduced, the travel distance of an electric car is prolonged, and an application of the electric car is promoted.

Description

technical field [0001] The invention relates to an electric vehicle heat pump air-conditioning system with adjustable refrigerant charge, and belongs to the fields of air-conditioning technology and automobile technology. Background technique [0002] At present, electric vehicles generally use PTC auxiliary electric heating to realize the heating function, which consumes a lot of power and has low heating efficiency. Simply relying on PTC electric heating for heating will reduce the mileage of electric vehicles. In order to reduce the energy consumption of the air conditioning system and increase the mileage of electric vehicles, a heat pump air conditioning system for electric vehicles using a vapor compression cycle is proposed. This system can realize cooling / heating functions. Compared with PTC auxiliary electric heating, it has low power consumption. , high energy consumption, and no potential safety hazards. In the cold working environment of electric vehicles in win...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/02F24F13/24F25B29/00F25B41/04F25B49/02F25B41/20F25B41/24
Inventor 魏名山黄海圣彭发展王智兴郝春思王芳君
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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