Protection circuit of power window

A technology for protecting circuits and power windows, applied in emergency protection circuit devices, protections that respond to overcurrents, electrical components, etc., and can solve problems such as motor overheating and damage

Inactive Publication Date: 2014-08-20
山西天朔电动汽车有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Automobile electric windows can reduce the labor intensity of drivers and passengers and improve the comfort of the car, but if the electric windows are not properly operated (such as pressing the lift switch and not releasing it when the window glass has reached the limit position), it is easy to Cause the motor to overheat or even damage

Method used

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  • Protection circuit of power window
  • Protection circuit of power window

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Experimental program
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Embodiment Construction

[0017] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0018] Such as figure 1 As shown, an electric window protection circuit includes: a power module, an overload circuit protector, and a window lift control module; wherein the power module is connected to the window lift control module through the overload circuit protector;

[0019] The window lift control module includes: the first door control circuit, the second door control circuit, and the window lift motor;

[0020] The first door control circuit includes a window up switch and a first door control switch, the up contact of the window up switch is connected to the first terminal of the first door control switch, and the fixed terminal of the window up switch is connected to the first door control switch. The second terminal of the switch is connected;

[0021] The second door control circuit includes a window drop switch and a second door contr...

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PUM

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Abstract

The invention relates to a power window control circuit which comprises a power module, an overload circuit protector and a window lifting control module. The power module supplies working voltage for the whole control circuit; and the overload circuit protector works when the load is over and suspends the power supply of the power module to the window lifting control module. The window lifting control module controls a first door control switch and a second door control switch to act through different contacts selected by a window lifting switch. According to the power window control circuit, a power window reaches an upper (or lower) limit position, a protection circuit can make the voltage on both ends of a window lifting motor equal through the first or the second door control switch, so that the window lifting motor is braked automatically and stops rotating immediately, and the window lifting motor and the circuit are protected.

Description

technical field [0001] The invention relates to a protection circuit for electric vehicle windows. Background technique [0002] Automobile electric windows can reduce the labor intensity of drivers and passengers and improve the comfort of the car, but if the electric windows are not properly operated (such as pressing the lift switch and not releasing it when the window glass has reached the limit position), it is easy to Cause the motor to overheat or even be damaged. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a protection circuit for electric vehicle windows in view of the deficiency of the above-mentioned background technology. [0004] The present invention adopts following technical scheme for realizing above-mentioned purpose of the invention: [0005] A power window protection circuit includes a power module, an overload circuit protector, and a window lift control module; wherein the power modul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/085H02H3/08
Inventor 龚文资
Owner 山西天朔电动汽车有限公司
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