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A 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: 2021-02-23
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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  • A vehicle cooling control method and device
  • A vehicle cooling control method and device
  • A 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. By calculating the temperature change trend of the drive motor and the motor controller, the following control is performed according to the temperature change trend: if the two temperature change trends are both less than zero, the control reduces the drive motor and the The coolant flow in the cooling branch corresponding to the motor controller; if one of the two temperature change trends is greater than zero and the other is less than zero, then the control increases the coolant flow in the cooling branch corresponding to the temperature change trend greater than zero ; If the two temperature change trends are both greater than zero, then the coolant flows of the two cooling branches are controlled according to the comparison results of the two temperature change trends. The invention realizes the cooling of the driving motor and the motor controller by calculating the temperature variation trend of the driving motor and the motor controller, and correspondingly controlling the cooling fluid flow in the cooling branch of the driving motor and the motor controller according to the temperature variation trend. The precise control of liquid flow improves the cooling effect.

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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Patent Type & Authority Patents(China)
IPC IPC(8): B60K11/02B60K11/06
CPCB60K11/02B60K11/06
Inventor 闫振敏
Owner ZHENGZHOU YUTONG BUS CO LTD