Patent ID: 6594149
Filing Date: 2003-07-15
Classification: H01L,H05K,Y10T

Abstract:
A liquid-cooled circuit device, comprising:a module comprising a module base plate and a circuit element mounted on the module base plate; a circuit case for housing the module; a cooling case through which cooling liquid flows, said cooling liquid being in contact with a back face of the module base plate; and a module supporting having an opening for accommodating the module base plate therein; wherein said module base plate is placed into said opening of said module supporting plate, edges of the opening and the module base plate are joined by welding to each other without a gap therebetween; said circuit case is formed with an opening smaller than said module supporting plate; said module supporting plate is fixed to the circuit case so as to block said opening in said circuit case from outside the circuit case and to cause said circuit element of said module mounted on the module supporting plate to be positioned within the circuit case; said cooling case is formed with a recess forming a cooling liquid chamber through which the cooling liquid flows; and said cooling case is fixed to said circuit case so that said recess faces said module supporting plate.