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Control method for electronic cooling fan of driving system of pure electric automobile

A technology of pure electric vehicles and electronic fans, which is applied in the combination of power plant cooling arrangement, pump control, power plant, etc., can solve the problems of waste of electric energy, high noise, and low battery life of electric vehicles, so as to achieve no waste of energy, Avoid noise and not affect battery life

Inactive Publication Date: 2020-04-28
DONGFENG LIUZHOU MOTOR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a cooling electronic fan control method for pure electric vehicle drive system, which can solve the problems of electric energy waste, low battery life and high noise in the prior art

Method used

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  • Control method for electronic cooling fan of driving system of pure electric automobile

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0023] figure 1 The shown pure electric vehicle drive system cooling electronic fan control method is implemented by using an electronic fan control device, which includes an electronic fan controller 2, and the electronic fan controller 2 receives temperature information from the drive system component 1, and according to this information to control the speed of the electronic fan 3; its implementation method is: Step 1: the electronic fan controller 2 receives the temperature from the drive system component 1 in real time;

[0024] Step 2: The electronic fan controller 2 calculates the speed preset duty cycle Pi;

[0025] Step 3: The electronic fan controller 2 filters Pi, that is, averages Pi within 1 second, and rounds to get Pc (Pc is the value obtained after Pi is rounded);

[0026] Step 4: The electronic fan controller 2 judges Pc to obtain the ...

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Abstract

The invention discloses a control method for an electronic cooling fan of a driving system of a pure electric automobile and relates to the technical field of automobile manufacturing. The control method comprises the following steps of S1, an electronic fan controller receives a temperature from a part of the driving system in real time; S2, the electronic fan controller calculates a preset dutyratio Pi of a rotating speed; S3, the electronic fan controller filters the Pi, that is, the electronic fan controller takes Pi within one second for averaging and carries out rounding off and rounding to obtain PC (Pc is a numerical value after rounding the Pi); S4, the electronic fan controller judges the Pc to obtain an output duty ratio Po of the electronic fan; S5, the electronic fan controller generates a PWM wave corresponding to the duty ratio according to the value of Po; and S6, the electronic fan controller executes different rotating speeds according to the received PWM wave and the duty ratio of the PWM. The control method can solve the problems that in the prior art, electric energy is wasted and the electric automobile is low in cruising ability and large in noise.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a control method for cooling an electronic fan of a driving system of a pure electric automobile. Background technique [0002] At present, the start-up of the electronic fan used for cooling the drive system of pure electric vehicles on the market is to detect the temperature of each component of the drive system (including the motor, motor controller, DCDC, OBC, etc.). When a certain temperature threshold is reached, the electronic fan is turned on. Cooling, and the control of electronic fans is generally three gears of low speed, medium speed, and high speed or two speeds of low speed and high speed. According to different temperature values ​​of components, different gears are turned on to meet heat dissipation requirements. [0003] Due to the small number of gears, the heat dissipation performance of the electronic fan, especially the opening of the medium-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00B60K11/06
CPCB60K11/06F04D27/004
Inventor 洪小科张志强李强韦杰宏丁磊梁崇宁陈尉平
Owner DONGFENG LIUZHOU MOTOR
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