Patent ID: 9245821
Filing Date: 2016-01-26
CPC Classification: F28F,H01L,H02M,H05K

Claim Text:
1. A cooling device for a semiconductor module, comprising: a water jacket to which a coolant is adapted to be supplied from outside for cooling a semiconductor element disposed outside the water jacket; a heat sink thermally connected to the semiconductor element; a first flow channel disposed inside the water jacket and extending from a coolant introducing port, the first flow channel including a plurality of guide sections having mutually different inclined surfaces for guiding the coolant toward one side surface of the heat sink; a second flow channel disposed inside the water jacket parallel to the first flow channel at a distance therefrom and extending toward a coolant discharge port, the second flow channel being formed with a sidewall parallel to the other side surface of the heat sink; a flow velocity adjusting plate disposed in the second flow channel and formed parallel to the other side surface of the heat sink at a distance therefrom; and a third flow channel formed at a position communicating the first flow channel and the second flow channel inside the water jacket, wherein the heat sink is disposed in the third flow channel, and the plurality of guide sections is at mutually different heights from a bottom surface of the first flow channel and each guide section has an inclined surface.