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Braking resistor overheat protection method, device, readable storage medium and controller

A braking resistor, overheating protection technology, applied in braking safety systems, electric braking systems, electric vehicles, etc. use, etc.

Active Publication Date: 2021-10-26
ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing braking resistor overheat protection method relies too much on the temperature sensor. When the temperature sensor has a fault that can be identified by the vehicle, the braking resistor will not be used; when the temperature sensor has a fault that the vehicle cannot identify, due to the collected braking Resistor temperature is unreliable, increasing the risk of braking resistor overheating

Method used

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  • Braking resistor overheat protection method, device, readable storage medium and controller
  • Braking resistor overheat protection method, device, readable storage medium and controller
  • Braking resistor overheat protection method, device, readable storage medium and controller

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] This embodiment provides a braking resistor overheat protection method, see figure 2 , the braking resistor overheating protection method includes steps:

[0045] S21: The braking resistor is put into operation.

[0046] After sending the braking command to the switch drive unit, it is determined that the braking resistor is put into operation, and the actual temperature of the braking resistor is calculated. Specifically, the braking resistor may be...

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Abstract

The embodiment of the present invention provides a braking resistor overheat protection method, device, readable storage medium and controller, the method includes: after the braking resistor is put into operation, the real-time heat production of the braking resistor and the preset instantaneous heat dissipation The difference is integrated to obtain the accumulated heat value; then the temperature rise value is calculated, and the temperature rise value is added to the initial temperature value when the braking resistor is put into operation to obtain the actual temperature after the braking resistor is put into operation; Whether the actual temperature after work is greater than the preset temperature threshold, if so, control the braking resistor to quit working. The present invention integrates the difference between the real-time heat production of the braking resistor and the preset instantaneous heat dissipation to obtain the accumulated heat value, and then determines the temperature rise value of the braking resistor according to the inherent parameters of the braking resistor, and then obtains the braking The actual temperature after the resistor is put into work realizes the overheating protection of the braking resistor without using the temperature sensor of the braking resistor.

Description

technical field [0001] The invention relates to the technical field of vehicle braking, more specifically, to a braking resistor overheat protection method, device, readable storage medium and controller. Background technique [0002] The braking resistor is located in the electric braking circuit of the vehicle. In order to prevent the braking resistor from being burned due to overheating, a temperature sensor is usually set to protect the braking resistor from overheating. Specifically, see figure 1 , when the switch drive unit of the vehicle receives the braking instruction from the regenerative braking controller, it drives the electronic switch K to turn on, so that the braking resistor R is input to consume the electric energy generated by regenerative braking; as the braking proceeds, the braking The temperature of the resistor R keeps rising. The temperature sensor Rt monitors the temperature of the braking resistor R. When the temperature of the braking resistor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T17/22B60L7/02
CPCB60L7/02B60T17/22
Inventor 李希宁张树勋王秀玲刘世杰符茂林郭婉露
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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