Power electronic device, power tube assembly structure and energy storage device

Abstract

The application provides an electric power electronic device, a power tube assembly structure and an energy storage device, and relates to the technical field of power tubes. The electric power electronic device comprises a heat sink, a first heat-conducting medium layer, a heat-conducting insulating sheet, a second heat-conducting medium layer and a power tube which are stacked in sequence, and further comprises a fixing structure and fixing glue. The fixing structure is connected to the heat sink and the power tube. The fixing glue is used to fixedly connect the heat-conducting insulating sheet and the heat sink, or the fixing glue is used to fixedly connect the heat-conducting insulating sheet and the power tube. The second heat-conducting medium layer is arranged between the power tube and the heat-conducting insulating sheet. The first heat-conducting medium layer is arranged between the heat sink and the heat-conducting insulating sheet. The first heat-conducting medium layer and the second heat-conducting medium layer do not need to be too low in thermal conductivity due to the need to consider bonding stability. The first heat-conducting medium layer and the second heat-conducting medium layer can be made of a material with high thermal conductivity, thereby reducing the thermal resistance of a thermal link composed of the power tube, the second heat-conducting medium layer, the heat-conducting insulating sheet, the first heat-conducting insulating sheet and the heat sink.

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