Thyristor

Abstract

The invention discloses a thyristor which comprises a thyristor body (1). Heat dissipation flow paths (2) used for circulation of cooling liquid for heat dissipation are arranged in the thyristor body (1). The thyristor body (1) comprises a tube cap (1.1), a chip (1.2) and a tube base (1.3), wherein the tube cap (1.1), the chip (1.2) and the tube base (1.3) are connected in sequence. The heat dissipation flow paths (2) comprise the first heat dissipation flow path (2.1) and the second heat dissipation flow path (2.2), wherein the first heat dissipation flow path (2.1) is arranged in the tube cap (1.1), and the second heat dissipation flow path (2.2) is arranged in the tube base (1.3). The thyristor is small in size and capable of lowering thermal contact resistance, thereby enabling the heat dissipation effect to be better.

Description

technical field [0001] The invention relates to a thyristor, in particular to a high-power thyristor. Background technique [0002] As a switching element, thyristor can be used in high voltage and high current occasions. At present, high-power thyristors have been widely used in DC transmission, smart grid, power converters, non-contact switches and other fields, with broad prospects and huge development space. Since the thyristor itself has a certain voltage drop, there will be a certain loss when the current flows, and the greater the current, the greater the loss. When the thyristor chip produces loss, the temperature of the device will rise accordingly, and the temperature rise will have an adverse effect on the characteristics of the device. And when the temperature is higher than a certain value, the device will fail. Therefore, when the thyristor is used, it is a common and effective method to take away its heat through a radiator. [0003] There are many kinds o...

AI Technical Summary

Problems solved by technology

Its disadvantages are: firstly, because the shape and flow channel of the radiator 6' in the prior art need to be matched with the thyristor 1', the design difficulty and cost are increased; secondly, the radiator 6' is generally not small and needs to be passed The method of pressing and fixing with the thyristor 1' not only increases the difficulty of installation and operation, but also makes the overall combination of the radiator 6' and the thyristor 1' larger; the third is that the connection between the radiator 6' and the radiator 1' is Connected together by pressure, there is a large contact thermal resistance, which affects the heat dissipation effect

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