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Air volume control system for cooling fan of radiator

An air volume control system and fan control technology, applied in pump control, machine/engine, non-variable-capacity pump, etc., can solve the problems of shortened cruising range, shortened fan life, excess heat dissipation, etc., to increase cruising range, guarantee Heat dissipation requirements and the effect of saving power consumption

Inactive Publication Date: 2017-03-22
东风特汽(十堰)专用车有限公司
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AI Technical Summary

Problems solved by technology

[0002] At present, the cooling fan commonly used in the field of commercial vehicles is mechanically driven and controlled. The cooling fan runs at a fixed speed at full speed to ensure heat dissipation for hot components such as the engine, motor, and motor controller. Due to the heat generation of each component and the operating conditions of the vehicle Closely related, the fan running at full speed in real time will cause excess heat dissipation, and for pure electric commercial vehicles, it will shorten the cruising range
Secondly, the fan runs at full speed, which will significantly increase the noise of the vehicle for pure electric commercial vehicles
Thirdly, the fan motor frequently jumps from zero speed to full speed, or from full speed to zero speed, which will shorten the life of the fan

Method used

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  • Air volume control system for cooling fan of radiator

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Embodiment Construction

[0011] Such as figure 1 The cooling fan air volume control system of the radiator is shown in the figure. The fan control module receives the timely temperature information of the motor and the motor controller through the CAN network. When either temperature reaches the set temperature of the fan, the fan module uses PWM mode to Adjust the fan speed to meet the cooling requirements of the system.

[0012] For example, set the motor controller temperature control range: 40-50°C; motor temperature control range: 70-110°C; set the cooling fan speed adjustment range: 10%-100% according to the cooling capacity of the fan itself. The pulse duty cycle determines the fan speed. When the temperature of the motor controller reaches 40°C or the motor temperature reaches 70°C, the duty cycle of the PWM pulse width modulation is used to make the fan speed reach 10%. The fan speed is based on the temperature change of the two. During the working process, the higher temperature is used as ...

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Abstract

The invention provides an air volume control system for a cooling fan of a radiator. The air volume control system comprises a fan motor and a fan control module, wherein the fan control module is arranged on the circuit of the fan motor and is powered by a relay controlled by a start key; the fan control module receives a temperature signal sent by a motor controller through a CAN; a temperature sensor is arranged on each of the motor controller and the motor; and the motor controller receives a signal from the temperature sensor, processes the received signal and then outputs a feedback signal through the CAN to the fan control module, and the fan control module controls the rotational speed of the fan motor through duty cycle PWM so as to control the rotational speed of the fan. The air volume control system reduces the consumption of electric energy while guaranteeing the heat dissipation demand of the complete vehicle, and therefore, increases the endurance mileage of the vehicle.

Description

technical field [0001] The invention belongs to the technical field of automotive electronic control, and relates to a cooling fan for a pure electric commercial vehicle, in particular to a cooling fan air volume control system for a radiator. Background technique [0002] At present, the cooling fan commonly used in the field of commercial vehicles is mechanically driven and controlled. The cooling fan runs at a fixed speed at full speed to ensure heat dissipation for hot components such as the engine, motor, and motor controller. Due to the heat generation of each component and the operating conditions of the vehicle Closely related, the fan running at full speed in real time will cause excess heat dissipation, and for pure electric commercial vehicles, it will shorten the cruising range. Secondly, the fan runs at full speed, which will significantly increase the noise of the whole vehicle for pure electric commercial vehicles. Thirdly, the frequent jumping of the fan mot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00
Inventor 李保才陈俭华刘燕刘朝吉史磊李世斌陈小微邹峄杰谢康
Owner 东风特汽(十堰)专用车有限公司
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