Motor overheat protection method and device

A technology of overheating protection, cold and heat, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of long reaction time, influence on motor performance and life, increase in production cost, etc., and achieve the effect of reducing production cost

Active Publication Date: 2013-01-30
BEIJING JINGWEI HIRAIN TECH CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if this hardware method is used to protect the motor from overheating, the change in the resistance of the thermistor will lead to a longer response time for the current to decrease, which will lead to the inability to quickly detect and stop the operation of the motor, causing the performance and life of the motor to be affected due to overheating. influences
Also, hardware such as thermistors have a limited lifespan, increasing production costs

Method used

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  • Motor overheat protection method and device
  • Motor overheat protection method and device

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Embodiment Construction

[0056] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0057] see figure 2 A flow chart of Embodiment 1 of a motor overheat protection method provided by the present application is shown, including:

[0058] Step S101: detecting the working current of the motor in real time;

[0059]When the window needs to be opened or closed, the driver or passenger presses the operating device su...

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Abstract

The invention provides a motor overheat protection method and device. The method comprises the following steps of: detecting the working current of a motor in real time; comparing the working current with the preset current threshold; timing the time of the working current greater than the current threshold when the working current is greater than the current threshold; comparing the timed time value with the preset time value; and stopping running the motor when the timed time value meets the preset time value. The motor overheat protection method and device provided by the invention can rapidly determine the overheat of the motor when the time of the current of the motor greater than the time of the current threshold meets the preset time value, and can perform the overheat protection for the motor and stop running the motor, and the performances and the service life of the motor can be prevented from being influenced by overheat.

Description

technical field [0001] The present application belongs to the field of motor control, and in particular relates to a motor overheat protection method and device. Background technique [0002] In modern society, human production and labor are inseparable from various motors, and these motors should be used in various fields of all walks of life. [0003] Take the window motor as an example, such as figure 1 As shown in the schematic structural diagram, the motor system for the window of an automobile includes: an operator 001 , a central controller 002 , a relay 003 , a power supply 004 and a motor 005 . When the window needs to be opened or closed, the driver or passenger presses the operator 001 such as the button in the car, and the central controller 002 of the car sends a continuous connection signal to the relay 003 to control the relay 003 to conduct, so that the power supply in the car A path is formed between 004 and the motor 005, and the power supply 004 supplies...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/085
Inventor 马斌张磊刘艳翠高飞
Owner BEIJING JINGWEI HIRAIN TECH CO INC
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