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Novel integrated water cooled thyristor

A technology of thyristor and water cooling, which is applied in the direction of thyristor, electric solid-state device, semiconductor device, etc., can solve the problem of temperature rise of thyristor chip, achieve the effect of reducing thermal resistance, reducing contact thermal resistance, and improving heat dissipation efficiency

Inactive Publication Date: 2014-11-26
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, 6-inch high-power thyristors are mainly used in UHV DC transmission converter valves. As the switching components of converter valves, currents as high as 5kA will be passed in during actual operation, which will bring large losses to the thyristors. , the heat generated by the loss will lead to an increase in the temperature of the thyristor chip

Method used

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  • Novel integrated water cooled thyristor
  • Novel integrated water cooled thyristor
  • Novel integrated water cooled thyristor

Examples

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Embodiment 1

[0033] Such as Figure 1-3 As shown, the invention of this example is mainly carried out on a 6-inch integrated water-cooled thyristor. The thyristor 1 includes a tube base 1.1, a ceramic ring shell, a protective layer 1.2, a chip 1.3 and a tube cover 1.5 arranged in sequence along the axial direction; the chip 1.3 The outer edge is covered with a rubber sleeve; the protective layer 1.2 and the chip are sequentially buckled into the ceramic ring shell; a radiator is provided under the axial direction of the tube base 1.1.

[0034] The chip 1.3 includes an anode-side molybdenum sheet, a silicon sheet, and a cathode-side molybdenum sheet arranged axially in sequence; the silicon sheet includes a phosphorous expansion region N+, a short base region P1, a long base region N, a short base region, and District P2 and concentrated boron diffusion region P+; said phosphorus expansion region N+ is provided with a cathode and a gate electrode, said boron-concentrated diffusion region P+...

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Abstract

The invention relates to a novel integrated water cooled thyristor comprising a tube seat and a tube cover, and a chip having a protection layer is arranged between the tube seat and the tube cover; the other end of the tube seat is connected with a heat dissipation device. Through external press mounting force, the bottom face of the tube seat of the thyristor is enabled to be connected with the heat dissipation device; the base seat and the heat dissipation device share a face, contact thermal resistance between a conventional thyristor and the heat dissipation device can be reduced, and therefore heat can be transmitted to the heat dissipation device from a chip of the thyristor; heat dissipation efficiency can be improved.

Description

Technical field: [0001] The invention relates to a thyristor, in particular to an integrated water-cooled thyristor. Background technique: [0002] At present, 6-inch high-power thyristors are mainly used in UHV DC transmission converter valves. As the switching components of converter valves, currents as high as 5kA will be passed in during actual operation, which will bring large losses to the thyristors. , the heat generated by the loss will lead to an increase in the temperature of the thyristor chip. In order to avoid the failure of the thyristor chip due to excessive temperature, the thyristor is usually equipped with a water-cooled radiator to take away the heat in time, so that the chip temperature can be controlled within a safe range. [0003] The inventor has observed for a long time that the existing radiator and the thyristor are independently designed and manufactured, and the radiator and the thyristor are connected under external force during use, and the he...

Claims

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Application Information

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IPC IPC(8): H01L23/367H01L23/473H01L29/74
Inventor 曹均正魏晓光杨俊
Owner STATE GRID CORP OF CHINA
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