Liquid cooling system for an electronic component

Patent metadata

Field	Value
Publication number	US-2016105997-A1
Application number	US-201514881216-A
Country	US
Kind code	A1
Filing date	Oct 13, 2015
Priority date	Oct 14, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

A liquid cooling system for an electronic component, comprising an exchanger plate having a first wall suitable to be at least partially interfaced to an electronic component to be cooled and a second wall, placed in contact with a cooling liquid, a plurality of heat sink elements, associated to said second wall and influenced by the cooling fluid so as to dissipate heat, wherein the heat sink elements are shaped according to regular patterns that extend parallel to a main extension direction and that comprise a plurality of loops, wherein each loop comprises a continuous curvilinear section that extends cantilevered from a first to a second attachment end fixed to the second wall. Advantageously, the continuous curvilinear section is shaped so that, a first and a second plane being traced perpendicular to the second wall passing respectively through said first and second ends, the continuous curvilinear section extends at least partially outside the space defined between said perpendicular planes.

First claim

1 . Liquid cooling system for an electronic component, comprising:
an exchanger plate having a first wall suitable to be at least partially interfaced with an electronic component to be cooled and a second wall, placed in contact with a cooling liquid, a plurality of heat sink elements, associated with said second wall and influenced by the cooling fluid to dissipate heat, wherein the heat sink elements are shaped according to regular patterns which extend parallel to a main extension direction and which comprise a plurality of loops, each loop comprising a continuous curvilinear section which extends projecting from a first to a second attachment end attached to the second wall, wherein the continuous curvilinear section is shaped so that, a first and a second plane being traced perpendicular to the second wall passing respectively through said first and second ends, the continuous curvilinear section extends at least partially outside the space defined between said perpendicular planes.

2 . Cooling system according to claim 1 , wherein the loops are shaped so as to have a lumen for the passage of cooling fluid, measured on a projection plane perpendicular to the second wall and parallel to the main extension direction, which increases moving away from the second wall.

3 . Cooling system according to claim 1 , wherein the continuous curvilinear section extends partially in the space defined by said two perpendicular planes and partially beyond the first of said perpendicular planes.

4 . Cooling system according to claim 1 , wherein each loop proves globally tilted laterally to the side of said first perpendicular plane.

5 . Cooling system according to claim 1 , wherein a first and a second consecutive loop of a same strip are inclined in relation to the respective first perpendicular planes so that the continuous curvilinear section of the second loop intersects the second plane of the first loop.

6 . Cooling system according to claim 1 , wherein each loop is substantially symmetrical in relation to a median plane, said median plane being inclined with respect to the second wall on the side of the first plane.

7 . Cooling system according to claim 6 , wherein said median plane identifies with the second wall an angle between 0 and 45 degrees.

8 . Cooling system according to claim 6 , wherein two loops adjacent in the main extension direction have the same inclinations on the side of the respective first perpendicular planes, said inclinations being identified by respective median planes of the loops.

9 . Cooling system according to claim 1 , wherein two loops consecutive in the main extension direction have respective attachment ends coincident with each other so that the second attachment end of a first loop coincides with the first attachment end of a second consecutive loop.

10 . Cooling system according to claim 1 , wherein the attachment ends of two adjacent loops are connected by connection beads in contact with the second wall.

11 . Cooling system according to claim 1 , wherein the loops are arranged in rows, along regular and repetitive patterns or strips parallel to the main extension direction, wherein two adjacent strips have loops having continuous curvilinear sections, misaligned or offset to a transversal direction perpendicular to said main extension direction and parallel to the second wall.

12 . Cooling system according to claim 1 , wherein two adjacent strips have loops substantially symmetrical with respect to respective median planes, wherein the median planes of the loops of said adjacent strips are inclined on opposite sides to the planes perpendicular to the second wall and to the main extension direction.

13 . Cooling system according to claim 1 , wherein the continuous curvilinear sections of adjacent loops of the same row touch at contact points, on the side opposite the second wall.

14 . Cooling system according to claim 1 , wherein the system comprises conveyors for a flow of cooling liquid, said cooling flow being conveyed parallel to the second wall and perpendicular to the main extension direction of the heat sink elements.

15 . Cooling system according to claim 1 , wherein said heat sink elements are at least partially made by means of a continuous conductor tape, folded in the form of a loop and attached to the second wall at the first and second attachment ends of each loop, said tape having a quadrangular cross-section.

16 . Cooling system according to claim 1 , wherein said heat sink elements are at least partially made by means of a continuous conductor wire, folded in the form of a loop and attached to the second wall at the first and second attachment ends of each loop, said wire having a curvilinear cross-section.

17 . Cooled electronic component, associated with the exchanger plate of a liquid cooling system according to claim 1 .

18 . Electronic component according to claim 17 , wherein said electronic component is an electronic power converter for the control of an electric automotive machine.

Assignees

• Magneti Marelli Spa

Inventors

• Tiziani Roberto
• Tagliaferri Enrico

Classifications

• H05K7/20254 Primary

  Cold plates transferring heat from heat source to coolant · CPC title

• H05K7/20436

  Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing · CPC title

• H05K7/20927 Primary

  Liquid coolant without phase change · CPC title