Thyristor element, thyristor element assembly structure and soft starter

Abstract

The invention provides a thyristor element, a thyristor element assembly structure and a soft starter. The thyristor element comprises a gate pole assembly and a chip packaging assembly. The chip packaging assembly is provided with a blind hole which is at least partially and fixedly connected with the gate pole assembly. The axis of the blind hole is perpendicular to a chip in the chip packagingassembly, and the gate pole assembly comprises a gate pole needle which extends out from the interior of the gate pole assembly and abuts against a chip gate pole of the chip; and a lug plate extending out of the top of the gate pole assembly and used for connecting the gate pole needle and the lead. The thyristor element assembling structure comprises a first radiator, a second radiator and a thyristor element clamped between the first radiator and the second radiator. The first radiator and the second radiator are connected through an insulating fastener. And the disc spring group of the insulating fastener is sleeved outside the insulating sleeve and is positioned between the first radiator and the insulating sleeve. By using the thyristor element, welding can be avoided, the assembly difficulty can be reduced, the service life of the soft starter can be prolonged, and the cost of the soft starter can be reduced.

Description

technical field [0001] The invention relates to the technical field of motor soft start, in particular to a thyristor element, an assembly structure of the thyristor element and a soft starter. Background technique [0002] When the motor is soft-started, the output voltage of the thyristor in the soft starter gradually increases, and the motor accelerates gradually until the thyristor is fully turned on, and the motor voltage reaches the rated working voltage, so as to realize the smooth start of the motor and avoid starting current tripping. [0003] Motors with a power below 100kW generally use such as figure 1 The thyristor element assembly structure with single-sided heat dissipation is shown. The thyristor component assembly structure includes a stacked metal base plate 1 , an insulating heat conducting plate 2 , a silicon chip 3 and a radiator 4 located on one side of the silicon chip 3 . Due to the limited heat dissipation capability of the assembly structure of th...

AI Technical Summary

Problems solved by technology

Due to the weak anti-fatigue ability of welding, it is not conducive to improving the service life of the thyristor element 5

Furthermore, the structure of the thyristor element 5 in the prior art is complex, the assembly process is difficult, and the production cost is high, which is not conducive to the popularization and application of the thyristor element 5

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