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Vehicle cooling control method and device

A cooling control and vehicle technology, which is applied in the combination of power plant cooling layout, power plant, vehicle components, etc., can solve the problem of inaccurate cooling control, achieve the effect of improving cooling effect and realizing precise control

Active Publication Date: 2020-03-13
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a vehicle cooling control method and device for solving the problem of inaccurate cooling control in existing cooling systems

Method used

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  • Vehicle cooling control method and device
  • Vehicle cooling control method and device

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Embodiment of vehicle cooling control method:

[0027] Due to the different heating mechanisms of the drive motor and the motor controller, the heat generation is different under the same working condition; due to the different flow channel structures of the drive motor and the motor controller, the flow resistance and heat transfer coefficient are different; due to the difference between the drive motor and the motor The specific heat of the controller itself is different, and its temperature rise curve is different; due to the different operating temperature ranges allowed by the drive motor and the motor controller, their requirements for cooling effects are different.

[0028] Based on the above analysis, in order to comprehensi...

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Abstract

The invention relates to a vehicle cooling control method and device, and the method comprises the steps: calculating the temperature change trends of a drive motor and a motor controller, and carrying out the following control according to the temperature change trends: controlling to reduce the flow of cooling liquid in a cooling branch corresponding to the drive motor and the motor controller if the two temperature change trends are smaller than zero; if one of the two temperature change trends is greater than zero and the other temperature change trend is less than zero, controlling to increase the flow of the cooling liquid in the cooling branch corresponding to the temperature change trend greater than zero; and if the two temperature change trends are both larger than zero, controlling the cooling liquid flow of the two cooling branches according to the comparison result of the two temperature change trends. By calculating the temperature change trend of the driving motor and the motor controller and correspondingly controlling the flow of the cooling liquid in the cooling branches of the driving motor and the motor controller according to the temperature change trend, accurate control over the flow of the cooling liquid of the driving motor and the motor controller is achieved, and the cooling effect is improved.

Description

technical field [0001] The invention relates to a vehicle cooling control method and device, belonging to the technical field of vehicle control. Background technique [0002] With the continuous development and progress of new energy technology, the pure electric vehicle industry is rapidly developing and maturing, and has received strong support from all parties in the field of passenger cars, and has achieved mass promotion and application. The safety, power and economy of new energy buses are important factors restricting their development, and the performance of the electric drive system directly affects the power, economy and safety of the vehicle. The efficiency and safety of the electric drive system are directly related to its temperature, so it is particularly important to achieve good cooling of the electric drive system. Due to the high power of the drive motor used in pure electric buses, the heat generated is also large. The traditional air-cooled structure ca...

Claims

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Application Information

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IPC IPC(8): B60K11/02B60K11/06
CPCB60K11/02B60K11/06
Inventor 闫振敏
Owner ZHENGZHOU YUTONG BUS CO LTD