Energy-saving ultralight insulated gate bipolar translator (IGBT) single tube inversion welder

Abstract

The invention discloses an energy-saving ultralight insulated gate bipolar translator (IGBT) single tube inversion welder, which comprises a machine case and a circuit board and a radiator which are arranged in the machine case, wherein the circuit board comprises a rectifying plate, an inversion plate and a driving plate; the rectifying plate is fixedly arranged at the bottom of the machine case; the radiator is provided with a downward opening groove; two sides of the opening groove of the radiator are fixed to the side edges of the rectifying plate; the rear end of the opening groove of the radiator is aligned with a fan; the driving plate is arranged between the radiator and the front lateral surface of the machine case; and the inversion plate is arranged on the upper end face of the radiator. According to the energy-saving ultralight IGBT single tube inversion welder, the inside of the machine case has a rat cage structure, so that the sizes of radiating devices are reduced greatly under the condition of the same radiating areas; and during air cooling, the air one-way circulating state that cold air enters one end individually and hot air is exhausted out of the other end individually is formed, so that an air cooling effect is good. The energy-saving ultralight IGBT single tube inversion welder is reasonable in integral structural layout, good in radiating effect and high in heat stability. Due to the adoption of a chip mounting process, the wiring areas of circuits are reduced; and due to the adoption of an inversion isolated output mode, interference between a main circuit and a control circuit is reduced.

Description

technical field [0001] The invention relates to a control circuit of an IGBT power tube, more specifically a circuit structure for controlling an IGBT soft switching circuit. Background technique [0002] In the prior art, the inverter welding machine usually has these characteristics: the interior is not a squirrel-cage structure, and when it is air-cooled, it cannot form a one-way air flow state in which cold air enters from one end alone and hot air is extracted from the other end alone. The effect is not good; the overall structural layout of the product is unreasonable, and the heating components are scattered, resulting in a large product; the heating components are not gathered together, causing the non-heating components to generate heat due to the proximity of the heating components. Generally speaking, similar products have low efficiency, below 80%, heavy weight, large volume, large electromagnetic interference, and unstable product performance. In addition, most...

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Problems solved by technology

[0002] In the prior art, the inverter welding machine usually has these characteristics: the interior is not a squirrel-cage structure, and when air-cooled, it cannot form a one-way air circulation state in which cold air enters from one end alone and hot air is drawn from the other end alone. The effect is not good; the overall structural layout of the product is unreasonable, and the heating components are scattered, resulting in a large product; the heating components are not gathered together, causing the non-heating components to heat up due to the proximity of the heating components

Generally speaking, similar products have low efficiency, below 80%, heavy weight, large volume, large electromagnetic interference, and unstable product performance

In addition, most inverter welding machines use hard switching technology, resulting in large switching losses and low efficiency; IGBTs are easily damaged and the product stability is poor

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