Windshield defogging control method, control device and defogging system

A windshield and fog control technology, which is applied in transportation and packaging, vehicle cleaning, heating/cooling equipment, etc., can solve the problems of affecting cruising range, high cost, and large vehicle power consumption, etc., to reduce the cost of defogging Effect

Active Publication Date: 2020-11-06
SAIC MOTOR
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AI Technical Summary

Problems solved by technology

[0005] Using the above defogging method, on the one hand, it is necessary to start the heat pump air conditioning system and HV-PTC at the same time, so the power consumption of the whole vehicle is relatively large, which affects the cruising range; Fog and passenger compartment comfort requirements

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  • Windshield defogging control method, control device and defogging system
  • Windshield defogging control method, control device and defogging system
  • Windshield defogging control method, control device and defogging system

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Embodiment Construction

[0026] At present, when defogging the windshield, the heat pump air-conditioning system usually cools and dehumidifies the air in the dehumidification mode first, and then heats the air by the HV-PTC to raise the temperature of the HV-PTC air outlet to a comfortable temperature, and then sends Into the passenger compartment, to achieve the purpose of defogging. Since the above defogging process requires the heating assistance of the HV-PTC to achieve the purpose of defogging the windshield, the cost of defogging is relatively high.

[0027] In view of the above problems, the embodiment of the present invention provides a windshield defogging control method. When using the method to defog the windshield, by adjusting the cooling capacity of the evaporator and the overall system of the condenser in the car Heat to achieve the purpose of defogging the windshield. In the method, no matter it is the evaporator, the air conditioning box assembly, or the electronic expansion valve, ...

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Abstract

The invention relates to a windscreen defogging control method, a control device and a defogging system. The windscreen defogging control method comprises the steps of respectively obtaining the current temperature of an air outlet of an evaporator, the current temperature of an air outlet of an air handling unit assembly and defogging target control parameter of a windscreen; comparing the current temperature of the air outlet of the evaporator with a corresponding target temperature and comparing the current temperature of the air outlet of the air handling unit assembly with a correspondingtarget temperature to respectively obtain a first comparison result and a second comparison result; and adjusting the refrigerating capacity of the evaporator and the total heating capacity of a condenser in a vehicle according to the first comparison result and the second comparison result so that the current temperature of the air outlet of the evaporator and the current temperature of the airoutlet of the air handling unit assembly are equal to the respective corresponding target temperatures so as to defog the windscreen. By using the windscreen defogging control method, the defogging cost of the windscreen can be reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a windshield defogging control method, device control device and defogging system. Background technique [0002] In order to improve the comfort of vehicles, more and more vehicles on the market are equipped with air conditioning systems. When the temperature of the environment in which the vehicle is located is within the range of 0° C. to 20° C., the windshield of the vehicle will usually be fogged. At this time, the air conditioning system of the vehicle will enter the defogging mode to achieve the purpose of defogging. [0003] With the increasing awareness of energy conservation and environmental protection, the air conditioning systems of most vehicles are heat pump air conditioning systems. For vehicles with heat pump air conditioning system, in the defogging mode, the windshield cannot be defogged only by the heat pump air conditioning system itself, but the hea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60S1/02B60S1/54B60H1/00
CPCB60H1/00271B60H1/00735B60H1/00878B60S1/023B60S1/54
Inventor 潘乐燕牛凤仙王天英刘启华
Owner SAIC MOTOR
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