公开(公告)号：US12120849B2

公开(公告)日：2024-10-15

申请号：US17784868

申请日：2020-12-11

申请人： MAGNA INTERNATIONAL INC. ,  Ram Balachandar ,  Abishek Sridhar ,  Lakshmi Varaha Iyer ,  Gerd Schlager

发明人： Ram Balachandar ,  Abishek Sridhar ,  Lakshmi Varaha Iyer ,  Gerd Schlager

IPC分类号： H05K7/20 ,  F28F13/00

CPC分类号： H05K7/20345 ,  F28F13/003 ,  H05K7/2039

摘要： An impingement cooling system includes a porous heat spreader and a nozzle configured to direct a fluid as a jet and/or as a spray impinging upon the porous heat spreader. The porous heat spreader is made of a thermally-conductive material such as a metal, metal alloy, carbon/graphite, or ceramic, and is in thermal contact with a heat source. The nozzle may be configured to direct the fluid as a jet comprising a single component liquid or gas (including air) or a liquid mixture such as water-glycol or other coolants. The nozzle may be configured to direct the fluid as a spray comprising a single component liquid or gas (including air) or a liquid mixture such as water-glycol or other coolants. The cooling system may include one or more nozzles, which may direct the cooling fluid orthogonally or at an oblique angle to an impingement plate.

公开(公告)号：US20230179060A1

公开(公告)日：2023-06-08

申请号：US17925950

申请日：2021-05-18

申请人： Abishek SRIDHAR ,  Ram BALACHANDAR ,  Ronald Michael BARRON ,  Lakshmi Varaha IYER ,  Gerd SCHLAGER ,  Martin WINTER

发明人： Abishek SRIDHAR ,  Ram BALACHANDAR ,  Ronald Michael BARRON ,  Lakshmi Varaha IYER ,  Gerd SCHLAGER ,  Martin WINTER

IPC分类号： H02K5/20 ,  H02K9/197 ,  H02K3/24

CPC分类号： H02K5/203 ,  H02K9/197 ,  H02K3/24

摘要： A cooling jacket for an electric motor comprises a fluid passage disposed adjacent to a stator and configured to convey a cooling fluid. The cooling jacket includes a flow mixing enhancer within the fluid passage adjacent an axial end of the stator. The flow mixing enhancer includes baffles, a porous fibrous structure, and/or an open-cell foam to provide greater thermal conductance at a region adjacent to the axial ends than it provides to a central region therebetween. A flow bridge directs the cooling fluid through circumferential flow paths adjacent to both of the axial ends before the cooling fluid is circulated in a central flow path around the central region of the stator. One or more nozzles direct a jet of cooling fluid upon the stator end winding, a rotor end winding, and/or printed circuit board. A ring-shaped coolant header may supply the cooling fluid to the nozzles.

公开(公告)号：US20230010253A1

公开(公告)日：2023-01-12

申请号：US17784868

申请日：2020-12-11

申请人： Ram BALACHANDAR ,  Abishek SRIDHAR ,  Lakshim Varaha IYER ,  Gerd SCHLAGER ,  MAGNA INTERNATIONAL INC.

发明人： Ram BALACHANDAR ,  Abishek SRIDHAR ,  Lakshmi Varaha IYER ,  Gerd SCHLAGER

IPC分类号： H05K7/20 ,  F28F13/00

摘要： An impingement cooling system includes a porous heat spreader and a nozzle configured to direct a fluid as a jet and/or as a spray impinging upon the porous heat spreader. The porous heat spreader is made of a thermally-conductive material such as a metal, metal alloy, carbon/graphite, or ceramic, and is in thermal contact with a heat source. The nozzle may be configured to direct the fluid as a jet comprising a single component liquid or gas (including air) or a liquid mixture such as water-glycol or other coolants. The nozzle may be configured to direct the fluid as a spray comprising a single component liquid or gas (including air) or a liquid mixture such as water-glycol or other coolants. The cooling system may include one or more nozzles, which may direct the cooling fluid orthogonally or at an oblique angle to an impingement plate.