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Electromagnetic heating device and driving detection circuit and method of power switch tube thereof

An electromagnetic heating device and detection circuit technology, which is applied in the direction of electric heating device, ohmic resistance heating, measuring device, etc., can solve the problems of IGBT tube burning, abnormal detection of drive circuit, and affecting the normal operation of electromagnetic heating system, so as to prevent excessive loss , Prevent the effect of excessive pulse current

Active Publication Date: 2020-12-22
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] Related electromagnetic heating devices such as induction cookers usually drive the IGBT tube through the drive circuit, that is, the drive circuit can provide a drive signal to the IGBT tube to control the IGBT tube to be turned on or off. If the drive circuit is abnormal, it may cause excessive loss of the IGBT tube. , and may even cause the IGBT tube to heat up and burn out, affecting the normal operation of the electromagnetic heating system
[0003] However, the related art does not detect whether the drive circuit is abnormal

Method used

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  • Electromagnetic heating device and driving detection circuit and method of power switch tube thereof
  • Electromagnetic heating device and driving detection circuit and method of power switch tube thereof
  • Electromagnetic heating device and driving detection circuit and method of power switch tube thereof

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Embodiment Construction

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0036] The driving detection circuit of the power switch tube in the electromagnetic heating device, the electromagnetic heating device with the circuit and the driving detection method of the power switch tube in the electromagnetic heating device will be described below with reference to the accompanying drawings.

[0037] figure 1 It is a schematic block diagram of a drive detection circuit for a power switch tube in an electromagnetic heating device according to an embodiment of the present invention. Such as figure 1 As sh...

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Abstract

The present invention discloses an electromagnetic heating device, a drive detection circuit of a power switch tube of an electromagnetic heating device, and a drive detection method of a power switchtube of an electromagnetic heating device. The drive detection circuit comprises: a drive module connected with the power switch tube and configured to output drive signals to the power switch tube to drive switching on-off of the power switch tube; a detection module connected with the drive module and configured to generate detection signals according to the drive signals output by the drive module; a counting module configured to regulate a counting value at preset intervals; and a control chip connected with the detection module and the counting module and configured to detect whether thedetection signals are trigged and interrupted or not, perform zero clearing of the counting value of the counting module when the detection signals are trigged and interrupted, obtain a final counting value of the counting module when the detection time reaches preset detection time and determine whether the drive module is abnormal or not according to the final counting value and the voltage state of the drive signals. Therefore, the abnormal conditions of the drive module can be effectively detected, and potential safety hazard is reduced.

Description

technical field [0001] The invention relates to the technical field of household electrical appliances, in particular to a drive detection circuit for a power switch tube in an electromagnetic heating device, an electromagnetic heating device, and a drive detection method for a power switch tube in an electromagnetic heating device. Background technique [0002] Related electromagnetic heating devices such as induction cookers usually drive the IGBT tube through the drive circuit, that is, the drive circuit can provide a drive signal to the IGBT tube to control the IGBT tube to be turned on or off. If the drive circuit is abnormal, it may cause excessive loss of the IGBT tube. , It may even cause the IGBT tube to heat up and burn out, affecting the normal operation of the electromagnetic heating system. [0003] However, the related art does not detect whether an abnormality occurs in the driving circuit. Contents of the invention [0004] The present invention aims to so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/06G01R31/00
CPCG01R31/00H05B6/06H05B2206/02
Inventor 江德勇王云峰
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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