Protection device for single-tube igbt and power module with single-tube igbt
A protective device and power module technology, applied in the direction of electrical components, electrical solid devices, circuits, etc., can solve problems such as low efficiency, low operating efficiency, and differences in the effect of coating silica gel, so as to avoid arc discharge or short circuit, reduce The process of insulating varnish and the effect of improving work efficiency
Active Publication Date: 2017-01-25
SHANGHAI HUGONG ELECTRIC WELDING MACHINE MFG
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[0025] Embodiments of the present invention are described in detail below:
[0026] Such as Figure 1 to Figure 3 As shown, the protective device for single-tube IGBT according to the present invention includes an insulating protective shell 20, and there are one or more first installation slots in the protective shell 20, and each of the first installation slots has an insulating partition inside , the partition includes a first partition 22, a second partition 23 and a third partition 24 arranged side by side, the first partition 22 and the second partition 23, the second partition 23 and the third partition The distances between the channels 24 are all 2 to 4 mm, that is, the distances set between the three channels are equal to the distances between the three pins 11 on the single-tube IGBT 10, and the first installation groove is set There are three through holes 25, and the three through holes 25 are respectively in the first compartment 22, the second compartment 23 an...
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The invention discloses a protective device of a single IGBT. The protective device of the single IGBT comprises an insulation protective shell, one or more first installation grooves are formed inside the protective shell; each first installation groove is internally provided with an insulation partition portion; each insulation partition portion comprises a first partition way, a second partition way and a third partition way which are arranged in parallel; the distance between each first partition way and the corresponding second partition way and the distance between each second partition way and the corresponding third partition way are 2-4 mm; each first installation groove is internally provided with three through holes which are formed inside the first partition way, the second partition way and the third partition way of the corresponding partition portion respectively. In this way, even though voltage between any two pins of the single IGBT reaches 500-700 V or under the humid or dust environment, the pins are spaced through the insulation partition ways, the defect that the creepage distance between the pins is not sufficient is overcome, the arc discharge or short-circuit phenomenon between the pins is avoided, the process that the pins are coated with insulation varnish is omitted, the product quality is improved, and working efficiency is improved.
Description
technical field [0001] The invention relates to a protection device for a single-tube IGBT. Background technique [0002] IGBT (Insulated Gate Bipolar Transistor), with its remarkable characteristics of fast switching speed and high rated current of a single tube, is widely used in various power supply equipment such as inverter power supply, frequency conversion speed regulation, induction heating and so on. For a long time, IGBTs have been widely used in the form of modules (that is, multiple dies packaged in one shell). Since the package of the module is fully sealed, it is suitable for harsh environments such as humidity, dust, high pressure, and salt spray. The ability to adapt is very strong. However, the packaging cost of the module is very high. In recent years, single-tube IGBTs with low packaging costs have been widely used in inverter equipment. [0003] Although the single-tube IGBT can be turned on and off quickly under high voltage, high current, and high fre...
Claims
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IPC IPC(8): H01L23/60H01L25/11
Inventor 不公告发明人
Owner SHANGHAI HUGONG ELECTRIC WELDING MACHINE MFG