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Air conditioner control method of electric vehicle

A control method and technology for electric vehicles, applied in the field of air conditioning control and air conditioning control of electric vehicles, can solve problems such as complex operation logic, achieve simple control logic, avoid frequent start and stop, and reduce costs

Active Publication Date: 2021-05-25
DONGFENG AUTOMOBILE COMPANY
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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 overcome the problems that the air conditioning control method of electric vehicles in the prior art needs to collect a large number of sensor signals, the operation logic is complicated, and repeated calibration is required in the development process, and to provide a method that requires a small number of sensors and has economical performance. Higher air conditioning control method for electric vehicles

Method used

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  • Air conditioner control method of electric vehicle
  • Air conditioner control method of electric vehicle
  • Air conditioner control method of electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] The air conditioner of the electric vehicle includes a controller 1, an evaporator 2, a compressor 3, a condenser 4, a cooling and heating damper actuator 5, a blower speed regulating module 6 and an evaporator temperature sensor 7;

[0106] The controller 1 is connected to the signal of the compressor 3, and the controller is connected to the signal of the condenser. 1. The heating and cooling air door actuator 5 is signal-connected, the heating and cooling air door actuator 5 is connected to the heating and cooling air door signal, and the temperature signal input end of the controller 1 is connected to the signal output end of the evaporator temperature sensor 7;

[0107] The refrigerant output end of the compressor 3 is connected to the evaporator 2 through the condenser 4 , and the output end of the evaporator 2 is connected to the refrigerant input end of the compressor 3 .

[0108] The air conditioning control method of the electric vehicle includes the following...

Embodiment 2

[0129] Embodiment 2 is basically the same as Embodiment 1, and its difference is:

[0130] The air conditioning control method of the electric vehicle also includes an anti-shutdown control method:

[0131] When the electric vehicle air conditioner is running, the controller 1 monitors the real-time temperature of the evaporator through the evaporator temperature sensor 7 in real time. When the controller 1 detects that the real-time temperature of the evaporator reaches the anti-icing protection corresponding to the current cold wind gear temperature, the controller 1 outputs a control signal to the compressor 3, so that the speed of the compressor 3 drops to the minimum speed;

[0132] The anti-icing protection temperature corresponding to the different cold air gears is set as shown in the table below:

[0133] Cooling gear Anti-icing protection temperature ℃ Cold wind 1 gear 5 2 speeds of cold wind 4 3 speeds of cold wind 3 4 gears of col...

Embodiment 3

[0138] Embodiment 3 is basically the same as Embodiment 2, and its difference is:

[0139] The air conditioning control method of the electric vehicle also includes an evaporator shutdown protection method:

[0140] A1: When the electric vehicle air conditioner is in the running state, the controller 1 monitors the real-time temperature of the evaporator through the evaporator temperature sensor 7 in real time. When the controller 1 detects that the real-time temperature of the evaporator drops to the level corresponding to the current cold wind gear, the evaporator stops temperature, the controller 1 controls the compressor 3 to stop;

[0141] The evaporator shutdown temperature corresponding to the different cold air gears is set as shown in the table below:

[0142]

[0143]

[0144] A2: After the compressor 3 stops for 20 seconds, the controller 1 monitors the real-time temperature of the evaporator through the evaporator temperature sensor 7. Compressor 3 starts a...

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Abstract

The invention discloses an air conditioner control method of an electric vehicle. An air conditioner of the electric vehicle comprises a controller, an evaporator, a compressor, a condenser, a cold and warm air door actuator, an air blower speed regulation module and an evaporator temperature sensor. The air conditioner control method of the electric vehicle comprises an electric vehicle air conditioner starting method, a compressor rotating speed control method, an anti-shutdown control method, a compressor speed regulation method, an evaporator shutdown protection method and an air volume gear switching quick response method. According to the method, simple control logic is realized, and the using number of sensors is reduced in a hardware aspect. And the energy-saving and environment-friendly effects are achieved through variable rotating speed control of the compressor, and the economic performance of the product is improved.

Description

technical field [0001] The invention relates to an air conditioner control method, in particular to an electric vehicle air conditioner control method, and is particularly applicable to the control of an electric air conditioner. Background technique [0002] The air-conditioning system of electric vehicles is generally composed of blower, evaporator, air-conditioning controller, electric compressor, condenser, sensors and other hardware. The output control signal controls the operation of the compressor and various actuators. This air-conditioning control method for electric vehicles needs to collect a large number of sensor signals, and the operation logic is complex. Repeated calibration is required during the development process. For some models such as light trucks, customers have higher requirements on the economy of products. Therefore, it is urgent to develop an air-conditioning control method that can simplify logic operations, reduce the number of sensors in hardwa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/32B60H1/00
CPCB60H1/3205B60H1/3227B60H1/00385B60H1/00835Y02T10/88
Inventor 吴雷波陈代荣黄平刚沈震宇孙希张健慧吴会平白世伟李乐怡张小燕李佳军涂湾
Owner DONGFENG AUTOMOBILE COMPANY
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