Unlock instant, AI-driven research and patent intelligence for your innovation.

A new electric vehicle heat pump air conditioning system and its control method based on phase change energy storage defrosting

A heat pump air conditioner and phase change energy storage technology, which is applied to vehicle components, air handling equipment, heating/cooling equipment, etc., can solve problems such as blockage, decreased comfort, temperature fluctuations in the car, etc. Improve comfort and ensure safe driving

Active Publication Date: 2021-01-29
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frost will partially or completely block the gaps between the fins, which will eventually lead to low heat exchange efficiency of the external heat exchanger, and even cause the unit to fail to continue heating. The air conditioner needs to be switched from the heating mode to the defrosting mode for timely adjustment During defrosting, the interior of the car will stop heating. On the one hand, the refrigerant in the heat exchanger in the car absorbs a large amount of heat in the car, causing the temperature in the car to fluctuate greatly, and the comfort is reduced; on the other hand, the system switches from defrosting mode In the heating mode, the condensed water generated by the defrosting mode of the heat exchanger in the car will evaporate quickly and atomize on the windshield, causing certain dangers to driving

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A new electric vehicle heat pump air conditioning system and its control method based on phase change energy storage defrosting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the new electric vehicle heat pump air-conditioning system based on phase change energy storage and defrosting includes a battery pack 1, an inverter 2, an electric compressor 3, a four-way valve 4, a first solenoid valve 5, and an in-vehicle heat exchanger 6 , the second solenoid valve 7, the throttling device 8, the external heat exchanger 9, the third solenoid valve 10, the phase change energy storage tank 11, the fourth solenoid valve 12; the battery pack 1 is connected with the inverter 2 Electric compressor 3 connection. The outlet of the electric compressor 3 is connected to the A port of the four-way valve 4, the inlet of the electric compressor 3 is connected to the C port of the four-way valve 4, and the B port of the four-way valve 4 is connected to the first solenoid valve 5, The in-vehicle heat exchanger 6, the second electromagnetic valve 7, the throttling device 8, and the external heat exchanger 9 are connected to the D port o...

Embodiment 2

[0023] According to the control method of the new electric vehicle heat pump air-conditioning system based on phase-change energy storage and defrosting described in Example 1, the heat pump air-conditioning system can be divided into five types: refrigeration, heating, heating energy storage, energy storage and defrosting The specific control methods are as follows:

[0024] In the cooling mode, open the first solenoid valve 5 and the second solenoid valve 7, the four-way valve 4 runs forward, close the third solenoid valve 10 and the fourth solenoid valve 12, and the refrigerant is compressed by the electric compressor 3 The four-way valve 4 flows into the heat exchanger 9 outside the vehicle to cool down and liquefy, and the liquefied refrigerant is throttled by the throttling device 8 and enters the heat exchanger 6 inside the vehicle to be gasified by the second solenoid valve 7 . During gasification, it absorbs the heat in the car to realize refrigeration, and the gas af...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A new electric vehicle heat pump air conditioning system based on phase change energy storage defrosting, including electric compressor, four-way valve, first solenoid valve, interior heat exchanger, second solenoid valve, throttling device, exterior heat exchanger, The third electromagnetic valve, the phase change energy storage box, and the fourth electromagnetic valve; the outlet of the electric compressor is connected to the A port of the four-way valve, the inlet of the electric compressor is connected to the C port of the four-way valve, and the four-way valve The B port of the four-way valve is connected to the D port of the four-way valve after connecting the first electromagnetic valve, the heat exchanger inside the vehicle, the second electromagnetic valve, the throttling device, and the heat exchanger outside the vehicle in sequence; one end of the third electromagnetic valve is connected to the four-way valve. The B port of the through valve is connected, and the other end is connected to the throttling device after passing through the phase change energy storage tank and the fourth electromagnetic valve in sequence; the energy transfer and exchange are performed through the refrigerant in the heat pump air conditioning system. The advantage is that when the system is in the defrosting mode, the heat exchanger in the car is in a closed state, and no condensed water is generated in the heat exchanger in the car, which ensures the safe driving of the car.

Description

technical field [0001] The invention relates to the technical field of electric vehicle heat pump air conditioners, in particular to a novel electric vehicle heat pump air conditioner system based on phase change energy storage and defrosting and a control method thereof. Background technique [0002] Unlike traditional fuel vehicles, electric vehicles do not have cooling water for the engine, and heating has become a major problem for them. At present, heat pump air conditioning is the main research direction of electric vehicle heating. [0003] Using heat pump air conditioning system for heating in electric vehicles can improve the energy efficiency ratio of the heating method, but when the heat pump air conditioner is heating in winter, when the surface temperature of the external heat exchanger coil is lower than the dew point temperature of the ambient air, the moisture in the air will It will precipitate out and condensate will form on the surface of the fins of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B60H1/00
CPCB60H1/00007B60H1/00271B60H1/00492B60H1/00735
Inventor 董凯军邵振华苏林
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI