US 11,812,582 B2
Symmetrical cold plate design
Tianyi Gao, San Jose, CA (US)
Assigned to BAIDU USA LLC, Sunnyvale, CA (US)
Filed by Baidu USA LLC, Sunnyvale, CA (US)
Filed on Nov. 9, 2020, as Appl. No. 17/093,027.
Prior Publication US 2022/0151099 A1, May 12, 2022
Int. Cl. H05K 7/20 (2006.01)
CPC H05K 7/20254 (2013.01) [H05K 7/20781 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A cold plate comprising:
a first frame including:
a first frame body having a planar first base surface, an annular first mating surface, and at least one exterior sidewall, wherein the first mating surface is spaced apart from the planar base surface and surrounds a first recess in the first frame body, the first recess having a bottom and at least one interior sidewall,
a plurality of first heat transfer fins positioned in the first recess, each first heat transfer fin having a first edge thermally coupled to the bottom and a second edge positioned substantially at a plane defined by the first annular mating surface,
a first fluid channel positioned at the bottom of the first recess, and
a first fluid port positioned in the at least one frame sidewall, the fluid port being fluidly coupled to the first fluid channel;
a second frame including:
a second frame body having a planar second base surface, an annular second mating surface, and at least one exterior sidewall, wherein the second mating surface is spaced apart from the second base surface and surrounds a second recess in the second frame body, the second recess having a bottom and at least one interior sidewall,
a plurality of second heat transfer fins positioned in the second recess, each second heat transfer fin having a first edge thermally coupled to the bottom of the second recess and a second edge positioned substantially at a plane defined by the second annular mating surface, wherein each second heat transfer fin has a corresponding first heat transfer fin and wherein each second heat transfer fin is separate from the corresponding first heat transfer fin,
a second fluid channel positioned at the bottom of the second recess, and
a second fluid port positioned in the at least one frame sidewall, the fluid port being fluidly coupled to the second fluid channel;
wherein the second mating surface is positioned in sealing contact with the first mating surface so that the first recess and the second recess form a fluid chamber and wherein the second edge of each first heat transfer fin is in contact with the second edge of a corresponding second heat transfer fin, so that the plurality of first heat transfer fins and the plurality of second heat transfer fins form a plurality of fin channels in the fluid chamber.