Detection circuit used for contactor

A technology for detecting circuits and contactors, applied in the field of circuits, can solve problems such as inability to accurately determine the adhesion of contactors, and achieve the effect of accurate judgment

Active Publication Date: 2015-05-06
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a detection circuit for contactors to solve the problem of inability to accurately determine whether contactors are stuck in the related art

Method used

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  • Detection circuit used for contactor
  • Detection circuit used for contactor

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Embodiment Construction

[0021] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the 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 creative efforts shall fall within the scope of protection of this application.

[0023] It should be noted that the terms "first" and "second" in ...

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Abstract

The invention discloses a detection circuit used for a contactor. The detection circuit comprises the contact, a switch and a controller, wherein the contactor is used for generating an output signal according to a control signal, the switch is connected to the contactor and used for converting the output signal of the contactor into a switch signal, and the controller is connected between the contactor and the switch and is used for outputting a control signal to the contactor, receiving a the switch signal which is fed back, and detecting whether adhesion happens to the contactor or not according to the output control signal and the received switch signal. By means of the detection circuit, the problem that in the prior art, whether adhesion happens to the contactor or not can not be accurately determined is solved, and loads are effectively protected.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a detection circuit for a contactor. Background technique [0002] Excessive current in the circuit or damage to the contactor itself will cause contactor adhesion, and contactor adhesion will directly cause damage to important loads such as motors and compressors in the circuit. [0003] In related technologies, in order to reduce the economic loss caused by contactor adhesion, in circuit design, a contactor with auxiliary contacts is generally used, and the contact is determined by detecting the auxiliary contacts of the contactor and other normal contacts. Whether the device is stuck. Because only when other normal contacts are all in action, the auxiliary contact will determine the action, and when only part of the other normal contacts are in action, the action of the auxiliary contact is uncertain. Therefore, the above technical solution cannot accurately determine whether the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H47/02
Inventor 李国耀赵志刚明开云赖元华韩志勇黎阳
Owner GREE ELECTRIC APPLIANCES INC
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