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Rectifier diode peak suppression circuit and electric welding equipment

A rectifier diode and suppression circuit technology, which is applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve the problems of easy failure and unsatisfactory rectifier diode peak suppression effect, and achieve improved charging speed, ideal effect, The effect of high reliability

Active Publication Date: 2021-09-28
SHENZHEN JASIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a rectifier diode spike suppression circuit and welding equipment, aiming to solve the problem that the current rectifier diode spike suppression effect is not ideal and easy to fail

Method used

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  • Rectifier diode peak suppression circuit and electric welding equipment
  • Rectifier diode peak suppression circuit and electric welding equipment
  • Rectifier diode peak suppression circuit and electric welding equipment

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Embodiment Construction

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0033] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and oth...

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Abstract

The invention relates to a power supply technology, and provides a rectifier diode peak suppression circuit and electric welding equipment. The rectifier diode peak suppression circuit comprises an anti-backflow element, an energy storage and release element, a first impedance circuit and a release control circuit, wherein the input end of the anti-backflow element is connected with a rectifier diode, the anti-backflow element is used for preventing the current of the output end of the anti-backflow element from flowing back to a branch where the rectifier diode is located, and the energy storage and release element is connected with the rectifier diode and a load and is used for storing and releasing electric energy to the load; the first impedance circuit is connected in series with the energy storage and release element and is used for limiting the charging current of the energy storage and release element; and the release control circuit is used for short-circuiting the first impedance circuit when the voltage of the energy storage and release element is greater than a preset value. The effect of restraining peak voltage is achieved, the energy stored in the energy storage and release element can be released and cannot be gradually accumulated to lose the absorption effect, thus the situation that the energy storage and release element is prone to losing efficacy is avoided, and the reliability is high.

Description

technical field [0001] The application belongs to the field of power supply technology, and in particular relates to a rectifier diode spike suppression circuit and electric welding equipment. Background technique [0002] In the full-bridge inverter circuit, due to the existence of the leakage inductance of the primary side, there is a voltage spike when the rectifier diode on the secondary side is turned off. For peak suppression, the most commonly used is to use RC (resistor-capacitor series) snubber circuit or RCD (resistor-diode series and parallel capacitor) snubber circuit, and some use active clamping circuit. [0003] Among them, the RC snubber circuit, like the RCD snubber circuit, will have the phenomenon of resistance heating, and with the increase of capacitance, the heating will be more serious, and after the capacitance increases to a certain value, the voltage peak will not continue to decrease, but will increase. However, when the capacitance of the active ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K37/00H02M1/00
CPCB23K37/00H02M1/00Y02B70/10
Inventor 戴烜赫王译娴
Owner SHENZHEN JASIC TECH
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