A method and device for troubleshooting a motor temperature sensor

A sensor failure, temperature sensor technology, applied in electromechanical devices, motor control, cooling/ventilation devices, etc., can solve problems such as motor shutdown and vehicle safety hazards

Active Publication Date: 2021-08-06
ZHENGZHOU YUTONG BUS CO LTD
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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 motor temperature sensor failure processing method and device, which is used to solve the problem in the prior art that the motor is shut down due to the failure of the motor temperature sensor, and then causes a large safety hazard to the vehicle

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  • A method and device for troubleshooting a motor temperature sensor

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Embodiment Construction

[0032] The purpose of the present invention is to provide a motor temperature sensor failure processing method and device, which are used to solve the problem in the prior art that the motor is shut down due to the failure of the motor temperature sensor, thereby causing a relatively large safety hazard to the vehicle.

[0033] To achieve the above object, the technical solution provided by the invention is:

[0034] A method for troubleshooting a motor temperature sensor, comprising the steps of:

[0035] During the operation of the motor, detect the flow rate of the coolant in the motor cooling pipe and the temperature of the water inlet of the motor cooling pipe;

[0036] If the temperature sensor breaks down, then according to the flow rate of the coolant in the motor cooling pipe and the temperature of the water inlet of the motor cooling pipe when the temperature sensor breaks down, the maximum ramping torque of the motor when the temperature sensor breaks down is obtain...

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Abstract

The present invention provides a motor temperature sensor failure processing method and device. The processing method is: during the operation of the motor, detect the flow rate of the cooling liquid in the motor cooling pipe and the temperature of the water inlet of the motor cooling pipe; if the temperature sensor fails, according to When the temperature sensor fails, the flow rate of the coolant in the motor cooling pipe and the temperature of the water inlet of the motor cooling pipe are obtained to obtain the maximum ramping torque of the motor when the temperature sensor fails; it is controlled according to the maximum ramping torque of the motor; The relationship between the maximum ramping torque, the flow rate of the coolant in the motor cooling pipe, and the temperature of the water inlet of the motor cooling pipe is obtained according to the calibration test. Since the maximum ramping torque is the torque of the motor when the vehicle is normal, it is necessary to control the running state of the motor with this torque, which will neither affect the safety of the vehicle due to the shutdown of the motor nor cause the motor to overheat. high question.

Description

technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to a fault handling method and device for a motor temperature sensor. Background technique [0002] With the depletion of traditional energy such as oil and coal and the increasing environmental pollution, new energy vehicles have become an inevitable trend in the development of the automotive industry. The motor system is the core component of new energy vehicles. Its main function is to control the drive motor to provide power for the vehicle, and it can provide auxiliary braking function when the vehicle is braking to recycle the braking energy. Therefore, the working state of the motor system directly affects the power output of the vehicle and the driving safety of the vehicle. [0003] During the operation of the motor, heat will be generated, which will cause the temperature of the motor to rise, and the temperature of the motor has a direct impact on the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P29/60H02K9/19
CPCH02K9/19H02P29/60
Inventor 刘帅张广利纪秉男
Owner ZHENGZHOU YUTONG BUS CO LTD
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