US Patent No. 10,462,941

HEAT SINK ASSEMBLY


Patent No. 10,462,941
Issue Date October 29, 2019
Title Heat Sink Assembly
Inventorship Keith Elliot Dixler, Peoria, IL (US)
Jon Nathaniel Husser, McNabb, IL (US)
Allen Ben Chu, Dunlap, IL (US)
Todd George Nakanishi, Elwood, IN (US)
Assignee Caterpillar Inc., Peoria, IL (US)

Claim of US Patent No. 10,462,941

1. A heat sink assembly for a power module, the heat sink assembly comprising:a main body having a first end and a second end, the second end being longitudinally opposite the first end;
a first cooling circuit disposed within the main body, the first cooling circuit adapted to provide a first flow of a coolant through the main body, the first cooling circuit including:
a first plurality of passages disposed within the main body and extending between the first end and the second end of the main body, each of the first plurality of passages being parallel to and spaced apart with respect to one another;
at least one first end channel disposed within the main body at the first end of the main body, the at least one first end channel adapted to provide fluid communication between each of the first plurality of passages at the first end of the main body;
at least one second end channel disposed within the main body at the second end of the main body, the at least one second end channel adapted to provide fluid communication between each of the first plurality of passages at the second end of the main body;
a first inlet provided in fluid communication with one of the first plurality of passages at the second end of the main body; and
a first outlet provided in fluid communication with one of the first plurality of passages at the second end of the main body, the first outlet being spaced apart with respect to the first inlet; and
a second cooling circuit disposed within the main body, the second cooling circuit adapted to provide a second flow of the coolant through the main body, the second cooling circuit including:
a second plurality of passages disposed within the main body and extending between the first end and the second end of the main body, each of the second plurality of passages being parallel to and spaced apart with respect to one another and with respect to each of the first plurality of passages;
at least one first end passage disposed within the main body at the first end of the main body, the at least one first end passage being spaced apart with respect to the at least one first end channel, the at least one first end passage adapted to provide fluid communication between each of the second plurality of passages at the first end of the main body;
at least one second end passage disposed within the main body at the second end of the main body, the at least one second end passage being spaced apart with respect to the at least one second end channel, the at least one second end passage adapted to provide fluid communication between each of the second plurality of passages at the second end of the main body;
a second inlet provided in fluid communication with one of the second plurality of passages at the second end of the main body, the second inlet being adjacent to and spaced apart with respect to the first outlet; and
a second outlet provided in fluid communication with one of the second plurality of passages at the second end of the main body, the second outlet being adjacent to and spaced apart with respect to the first inlet,
wherein the first cooling circuit and the second cooling circuit provide an opposing cross flow of the first flow and the second flow through the main body respectively; and
wherein the at least one first end channel and the at least one first end passage are disposed within a first insert adapted to be coupled to the first end of the main body.