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Over-temperature prevention control method and system

A control method and technology of a control system, which are applied in the field of anti-over-temperature control, can solve the problems of motor over-temperature and cannot take into account the driver's demand for power, etc., and achieve the effect of preventing temperature rise.

Active Publication Date: 2018-11-23
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method and system for preventing overheating, which is used to solve the technical problem that the driver's demand for power cannot be taken into account when preventing the motor from overheating

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  • Over-temperature prevention control method and system

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Embodiment Construction

[0045] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] The structure diagram of the anti-overtemperature control system of the present invention is as follows: figure 1 As shown, the cooling system includes a fan, a water pump, a motor, a motor controller, an instrument and a vehicle controller, wherein the vehicle controller controls the operation of the fan and the water pump, and the vehicle controller communicates with the motor, the motor controller and the instrument through CAN Information exchange. The vehicle controller can realize the monitoring and control of the motor and the motor controller, and can report the temperature information of the motor and the motor controller to the instrument, so as to remind the driver.

[0047] The cooling system mainly realizes the cooling control to prevent the vehicle motor or its controller from overheating at the component level a...

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Abstract

The invention relates to an over-temperature prevention control method and system. The control method comprises following steps: determining whether a driver's demand for vehicle power meets a set high power demand condition; if the set high power demand condition is met, determining whether the temperature of the motor or its controller is greater than a first temperature set value; if the temperature is greater than the first temperature set value, controlling to reduce vehicle drive torque to limit the temperature of the motor or its controller. In the present invention, when the driver's demand for vehicle power is large, if the temperature of the motor or its controller is higher than the set value, the drive torque of the vehicle is controlled to be reduced, which effectively prevents the danger of burning the motor since the temperature of the motor and controller rises rapidly due to the driver's stepping on the accelerator or stepping on the accelerator for too long in the case of excessive temperature of the motor and controller.

Description

technical field [0001] The invention relates to an over-temperature prevention control method and system, belonging to the technical field of automotive electronics. Background technique [0002] With the rapid increase of car ownership, the energy shortage and air pollution brought by cars to the earth are becoming more and more serious. New energy vehicles have become the active research and development direction of major manufacturers. At the same time, with the increase of national support and the improvement of market recognition, new energy vehicles have already possessed high market competitiveness. [0003] Since the passenger car has the characteristics of long body and heavy load, when the vehicle is overloaded, it is easy to cause overheating of the motor, burning the motor controller or the motor itself. The Chinese patent document with the publication number CN104354693A discloses a method for over-temperature protection of the ISG motor of a hybrid electric ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60R16/023
CPCB60L15/20B60R16/023Y02T10/72
Inventor 刘振楠苏常军杨学青王辉郭潇然
Owner ZHENGZHOU YUTONG BUS CO LTD
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