CN-122028739-A - Integrated cold plate heat abstractor

Abstract

The application discloses an integrated cold plate heat dissipation device which comprises a bottom plate and a cover plate. The bottom plate comprises a top surface, a bottom surface and a plurality of radiating fins, wherein the top surface and the bottom surface are opposite to each other in the first direction, the bottom surface is thermally coupled to the plurality of heat sources, and the plurality of radiating fins are arranged on the top surface and spatially correspond to the plurality of heat sources. The cover plate comprises an inflow port, at least one outflow port and a plurality of turbulence generators, wherein when the cover plate is assembled to the top surface of the bottom plate along a first direction, a plurality of chambers are formed, the plurality of chambers respectively contain a plurality of cooling fins and are communicated between the inflow port and the at least one outflow port, the plurality of turbulence generators protrude from the cover plate towards the bottom plate, and one of the plurality of turbulence generators is correspondingly arranged between each of the plurality of cooling fins and the inflow port.

Inventors

• CAI MINGKUN
• JIAN SHIKAI
• LI MINGZONG

Assignees

• 台达电子工业股份有限公司

Dates

Publication Date

20260512

Application Date

20250912

Priority Date

20241111

Claims (19)

1. 1. An integrated cold plate heat sink comprising: A bottom plate including a top surface, a bottom surface and multiple heat dissipation fins, wherein the top surface and the bottom surface are opposite to each other in a first direction, the bottom surface is thermally coupled to multiple heat sources, the multiple heat dissipation fins are disposed on the top surface and spatially opposite to the multiple heat sources, and The cover plate comprises an inlet, at least one outlet and a plurality of turbulence generators, wherein when the cover plate is assembled to the top surface of the bottom plate along the first direction, a plurality of chambers are formed, the plurality of chambers respectively accommodate the plurality of cooling fins and are communicated between the inlet and the at least one outlet, the plurality of turbulence generators protrude from the cover plate towards the bottom plate, and one of the plurality of turbulence generators is correspondingly arranged between each of the plurality of cooling fins and the inlet.
2. 2. The integrated cooling plate heat sink according to claim 1, wherein the bottom plate is formed by integrally molding a metal material, and the cover plate is formed by integrally molding a plastic material.
3. 3. The integrated cooling plate heat dissipating device of claim 1, wherein the plurality of heat dissipating fins are disposed overlapping the plurality of heat generating sources in a viewing direction of the first direction.
4. 4. The integrated cold plate heat sink of claim 1, wherein the plurality of fins are offset from the plurality of turbulators in a direction of view of the first direction.
5. 5. The integrated cold plate heat sink of claim 1, wherein a cooling fluid is passed through the plurality of chambers in a second direction perpendicular to the first direction, wherein the plurality of fins extend in the second direction, and wherein the openings of the inlet and the outlet are oriented in the first direction.
6. 6. The integrated cold plate heat sink of claim 1, wherein the peripheral wall of the cover plate is tightly coupled to the base plate by a rubber sealing assembly.
7. 7. The integrated cold plate heat sink of claim 1, wherein the plurality of turbulence generators comprise at least one rib structure selected from the group consisting of a transverse rib, an inclined rib, a V-shaped rib, a W-shaped rib, and combinations thereof.
8. 8. The integrated cold plate heat sink of claim 7, wherein the cross-section of the at least one rib structure is selected from the group consisting of square, rectangular, triangular, right triangle, rounded rectangle, and combinations thereof, wherein the plurality of fins extend along a second direction perpendicular to the first direction, and the extending direction of the at least one rib structure is not parallel to the second direction.
9. 9. The integrated cold plate heat sink of claim 7, wherein each of the V-shaped ribs has a tip at a center thereof, the tip facing the inlet or the at least one outlet.
10. 10. The integrated cold plate heat sink of claim 7, wherein each of the W-shaped ribs has a tip at a center thereof, the tip facing the outflow port or the at least one outflow port.
11. 11. The integrated cold plate heat sink of claim 1, wherein the plurality of turbulence generators comprise a plurality of cylinder structures selected from one of the group consisting of square cylinders, triangular cylinders, rectangular cylinders, polygonal cylinders, circular cylinders, cones, rounded cylinders, beveled cylinders, wing cylinders, arcuate fins, and combinations thereof.
12. 12. The integrated cold plate heat sink of claim 11, wherein the plurality of pillar structures are arranged in a para-array arrangement or a staggered array arrangement.
13. 13. The integrated cold plate heat sink of claim 1, wherein the number of the at least one outflow opening is greater than the number of the inflow openings.
14. 14. The integrated cooling plate heat dissipating device according to claim 1, wherein the number of the at least one outflow opening is equal to the number of the plurality of chambers, and a cooling liquid is discharged from the at least one outflow opening after passing through the plurality of chambers along a second direction, wherein the second direction is perpendicular to the first direction.
15. 15. The integrated cold plate heat sink of claim 1, wherein a cooling fluid is passed through the plurality of chambers in a second direction perpendicular to the first direction, wherein the plurality of fins extend in the second direction in the plurality of chambers and are arranged in segments to form at least one spacing region, wherein one of the plurality of turbulence generators is located in the at least one spacing region.
16. 16. The integrated cold plate heat sink of claim 15, wherein the at least one spacer region is disposed overlapping the plurality of heat generating sources in the first direction of view.
17. 17. The integrated cold plate heat sink of claim 1 further comprising a plurality of precursor channels, wherein the inlet is split to the plurality of chambers by the plurality of precursor channels.
18. 18. The integrated cold plate heat sink of claim 1, further comprising a plurality of leading channels, wherein the plurality of leading channels are disposed between a leading edge of each of the plurality of chambers and the inflow port, respectively.
19. 19. The integrated cooling plate heat dissipating device according to claim 1, wherein a cooling liquid passes through the plurality of chambers along a second direction perpendicular to the first direction, wherein the plurality of chambers communicating between the inlet and the at least one outlet are symmetrically disposed, and a central axis of symmetry is parallel to the second direction.

Description

Integrated cold plate heat abstractor Technical Field The present application relates to a heat dissipating device, and more particularly to an integrated cold plate heat dissipating device with enhanced heat transfer and reasonable distribution of coolant flow through turbulence generators, thereby improving overall heat dissipation efficiency and system reliability. Background For the current multi-chip package design in the market, a plurality of chips are usually mounted on the same printed circuit board at the same time, and each chip needs to be matched with an independent cold plate or heat dissipation module for heat dissipation. However, the plurality of cooling plates or heat dissipation modules are correspondingly mounted on the heat generating sources of the plurality of chips, which is realized through a complicated mounting process, and the waterway connection design of the plurality of cooling plates or heat dissipation modules is quite complex, and meanwhile, the risk of damage to the performance of the device caused by leakage of the cooling liquid is increased. In view of the foregoing, it is desirable to provide an integrated cold plate heat dissipating device, which enhances heat transfer effect and reasonable distribution of coolant flow through a turbulence generator, thereby improving overall heat dissipation efficiency and system reliability. Disclosure of Invention The application aims to provide an integrated cold plate heat dissipation device. The heat transfer effect and the reasonable distribution of the flow of the cooling liquid are enhanced by the turbulence generator, and the overall heat dissipation efficiency and the system reliability are improved. Another object of the present application is to provide an integrated cold plate heat dissipating device. The metal base plate and the plastic cover plate are tightly combined through the rubber sealing assembly to form a plurality of cooling chambers which are communicated between the inflow opening and the outflow opening on the plastic cover plate, and simultaneously, the metal base plate and the plastic cover plate are used for radiating a plurality of heat sources arranged on the single printed circuit board. Wherein, a plurality of heat radiation fins are configured corresponding to a plurality of heating sources, and can effectively realize thermal coupling connection. Because the plastic cover plate is easy to design and change the flow channel, and turbulence generators can be arranged corresponding to the positions of the radiating fins in the plurality of cooling cavities. A plurality of turbulators project downwardly from the bottom surface of the plastic cover plate and are located at least at the leading edge of the flow passage where each of the plurality of chambers communicates with the inlet. In other words, turbulence generators are correspondingly arranged between each of the plurality of radiating fins and the inflow port, so that a turbulence enhanced heat transfer effect is effectively generated. The turbulence generator is composed of a plurality of protruding features, can effectively generate turbulence to strengthen the heat transfer effect, and the structure of the turbulence generator can be composed of units such as square cylinders, triangular cylinders, quadrangular cylinders, polygonal cylinders, circular cylinders, cones, round head cylinders, inclined plane cylinders, wing-shaped cylinders, arc-shaped fins, transverse ribs, inclined ribs, V-shaped ribs, W-shaped ribs and the like, wherein the cross section of the rib structure is square, triangular, right-angled triangular, round head rectangular or arc-shaped, and the combination of the types, the numbers and the arrangement modes can be changed according to the actual application requirements. Furthermore, the turbulence generator can be arranged at the inlet of the cooling fin area or at the interval area of the cooling fins in the cooling cavity, and the pressure drop of the cooling fin area in the cooling cavity can be controlled by adjusting the change of the pattern, the number and the arrangement mode of the turbulence generator, so that the reasonable distribution of the flow of the cooling liquid is achieved. Furthermore, the turbulence generator may be, for example, a movable structure that allows for direction or position modulation depending on the flow rate or pressure drop. On the other hand, the outlet of the cooling liquid can be arranged at a plurality of positions in cooperation with the layout of the chip heating source, but the cooling liquid is not limited to the above. The cooling liquid flowing between the inlet and the outlet is not limited to a single-phase cooling fluid, and may be, for example, water or oil. The cooling efficiency of the heat sink may be improved by a phase change of a two-phase cooling fluid, such as a liquid, for example, a refrigerant. Of course, the application is not limited thereto. In order t