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Demisting closed-loop control system for heat pump system of pure electric vehicle and control method thereof

A pure electric vehicle and heat pump system technology, which is applied to the pure electric vehicle heat pump system defogging closed-loop control system and its control field, and can solve the problems such as the inability to take into account the comfort of the passenger compartment and reduce the energy consumption of the defogging function.

Active Publication Date: 2021-09-10
FAW CAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to propose a pure electric vehicle heat pump system defogging closed-loop control system and its control method, through the temperature and humidity defogging sensor, real-time calculation and judgment of the windshield defogging effect, corresponding to different fogging conditions, formulate different The control strategy maximizes the advantage of heat pump heating energy consumption. Through the switching of the air conditioning function, the defogging effect can be matched with the air conditioning state, reducing the energy consumption of the defogging function. The problem of comfort, saving electric energy, and improving the driving range of electric vehicles in high and low temperature environments

Method used

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  • Demisting closed-loop control system for heat pump system of pure electric vehicle and control method thereof
  • Demisting closed-loop control system for heat pump system of pure electric vehicle and control method thereof
  • Demisting closed-loop control system for heat pump system of pure electric vehicle and control method thereof

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Experimental program
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Effect test

Embodiment 1

[0077] Such as figure 1 As shown, a pure electric vehicle heat pump system defogging closed-loop control system includes an acquisition module, a control module, a heating and cooling module, and an air distribution module. The acquisition module, heating and cooling module, and air distribution module are simultaneously connected to the control module. The cooling module is connected to the air distribution module.

[0078] The acquisition module includes: a glass temperature and humidity sensor 131 , an indoor temperature sensor 132 , an external temperature sensor 133 , a sunlight sensor 134 , an evaporator temperature sensor 135 , and a water temperature sensor 136 .

[0079] The control module includes: an air conditioner controller 110 and an air conditioner panel 120 .

[0080] The heating and cooling module includes: a heat pump system 140 , a PTC heater 150 , an evaporator 102 , and a warm air core 104 .

[0081] The air distribution module includes: HVAC 100.

[0...

Embodiment 2

[0090] A control method for a pure electric vehicle heat pump system defogging closed-loop control system, such as image 3 shown, including the following steps:

[0091] Step S10. After the air conditioner works, the air conditioner controller 110 collects the readings of the glass temperature and humidity sensor 131 and the indoor temperature sensor 132 in real time.

[0092] Step S20. The air conditioner controller 110 calculates whether the dew point temperature of the indoor air is higher than the glass temperature as a basis for judging whether the dew point temperature is higher than the glass temperature. If it is judged that the dew point temperature is higher than the glass temperature, it is judged that the glass has been fogged, and the process proceeds to step S301; If the temperature is lower than the glass temperature, it is judged that the glass is not fogged, and the process goes to step S302.

[0093] Step S301. The air conditioner controller 110 feeds back ...

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Abstract

The invention discloses a demisting closed-loop control system for a heat pump system of a pure electric vehicle and a control method thereof. Through a temperature and humidity demisting sensor, the demisting effect of a front windshield is calculated and judged in real time, and different control strategies are formulated corresponding to different fogging working conditions; the modes comprise a low-load consideration mode, a medium-load consideration mode, a high-load consideration mode, a demisting low-load mode, a demisting medium-load mode and a demisting high-load mode. The energy consumption advantage of heat pump heating is utilized to the maximum extent through a graded demisting mode, the matching of the demisting effect and the air conditioner state is achieved through switching of the air conditioner functions, the energy consumption of the demisting function is reduced, meanwhile, the problem that the comfort of a passenger compartment cannot be considered in the demisting mode is solved, electric energy is saved, and the driving range of the electric vehicle in the high-low temperature environment is increased.

Description

technical field [0001] The invention relates to a defogging method for a heat pump of an electric vehicle, in particular to a closed-loop control system for defogging a heat pump system of a pure electric vehicle and a control method thereof, which take into account the energy consumption of an air conditioner and the temperature stability of a passenger compartment. Background technique [0002] In recent years, the automobile industry is undergoing tremendous changes, and one of the most important issues is the strategy of the new four modernizations of automobiles. China's "New Energy Vehicle Industry Development Plan (2021-2035)" clearly states that it is necessary to aim at the direction of "electricization, networking, and intelligence", coordinate development and safety, strengthen the coordination of policies, standards and regulations, and accelerate the improvement of the safety supervision system. Solidly promote the construction of a powerful automobile country. ...

Claims

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Application Information

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IPC IPC(8): B60H1/00B60S1/02B60S1/54
CPCB60H1/00735B60H1/00785B60H1/00814B60H1/00007B60S1/026B60S1/54Y02T10/88
Inventor 赵萌苏玲王淼李鑫龙栗顺齐霁徐聪刘清欣梁宵黄博
Owner FAW CAR CO LTD
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