US 12,193,201 B2
Mini-channel cold plate with three-dimensional adaptive flow-path using bi-metal fins
Jin Lee, Busan (KR); Yongduk Lee, Vernon, CT (US); and Parag M. Kshirsagar, South Windsor, CT (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Jun. 23, 2022, as Appl. No. 17/847,769.
Prior Publication US 2023/0422452 A1, Dec. 28, 2023
Int. Cl. H05K 7/20 (2006.01)
CPC H05K 7/20927 (2013.01) [H05K 7/20409 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A cooling assembly comprising:
a cold plate top wall attached to a first cold plate side wall and a second cold plate side wall, the first cold plate side wall attached to a cold plate bottom wall and including a coolant inlet, and the second cold plate side wall attached to the cold plate bottom wall and including a coolant outlet;
a substrate positioned on the cold plate top wall, the substrate having a plurality of semiconductor devices positioned on the substrate;
a plurality of bi-metal fins extending from the cold plate top wall towards the cold plate bottom wall;
wherein heat from a semiconductor device of the plurality of semiconductor devices causes a coolant introduced between the cold plate top wall and the cold plate bottom wall to raise temperature of the coolant, which causes a bi-metal fin positioned proximal to the heated semiconductor device to deform and change a flow path of the coolant from the coolant inlet to the coolant outlet; and
a plurality of wall extensions extending from the cold plate bottom wall towards the cold plate top wall, the plurality of wall extensions defining a plurality of lower channels for the coolant; and
wherein each bi-metal fin of the plurality of bi-metal fins includes a side wall portion and a bottom wall portion, with each bi-metal fin extending from the cold plate top wall to define a plurality of adjustable upper channels for the coolant.