Patent ID: 9520305
Filing Date: 2016-12-13
CPC Classification: H01L,H05K

Claim Text:
1. A power semiconductor device comprising: a power semiconductor module having a heat sink through which a liquid can flow, said heat sink having an opening therein and a lateral first surface which delimits said opening and extends circumferentially around said opening; wherein said first surface of said heat sink is at an angle (β) of less than about 90° with respect to said main surface of said cooling plate; wherein said cooling plate is arranged in said opening; wherein said lateral first surface of said cooling plate and said lateral first surface of said heat sink are arranged in a manner pressed against one another and extend circumferentially along said lateral first surface of said cooling plate and extend circumferentially along said lateral first surface of said heat sink; wherein said heat sink has a lateral second surface which extends circumferentially around said opening; wherein said opening is further delimited by said lateral second surface of said heat sink; wherein said lateral second surface of said heat sink forms an inner surface of a first groove which extends circumferentially around said opening, and extends radially inwardly towards said cooling plate; wherein said cooling plate has an edge region with a protuberance, said edge region extending circumferentially around said cooling plate, and extending outwardly towards said lateral second surface, and said protuberance being disposed in said first groove.