Tiles having multiple cooling cells for MEMS-based cooling

Patent metadata

Field	Value
Publication number	US-12240750-B2
Application number	US-202117474815-A
Country	US
Kind code	B2
Filing date	Sep 14, 2021
Priority date	Sep 16, 2020
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A system including a plurality of cooling cells is described. Each of the cooling cells includes a support structure and a cooling element. The cooling element has a central region having an axis and a perimeter. The cooling element IS supported by the support structure at the central region and along the axis. At least a portion of the perimeter being unpinned. The cooling element is configured to undergo vibrational motion when actuated to drive a fluid toward a heat-generating structure. A portion of the cooling cells aligned along the axis are physically connected such that the cooling cells form an integrated cooling cell tile.

First claim

What is claimed is:

1. A system, comprising:
a plurality of cooling cells, each of the plurality of cooling cells including a support structure and a cooling element, the cooling element having a central region having an axis and a perimeter, the plurality of cooling cells including a first cooling cell, a second cooling cell, a third cooling cell, and a fourth cooling cell, the cooling element being supported by the support structure at the central region and along the axis, at least a portion of the perimeter being unpinned, the cooling element being configured to undergo vibrational motion when actuated to drive a fluid toward a heat-generating structure, wherein a first portion of the plurality of cooling cells includes the first cooling cell and the second cooling cell, wherein the first cooling cell is physically connected to the second cooling cell, and wherein the first cooling cell and the second cooling cell are aligned along the axis such that the plurality of cooling cells form an integrated cooling cell tile;
a plurality of integrated tabs mechanically connecting a second portion of the plurality of cooling cells, wherein the second portion includes the third cooling cell and the fourth cooling cell; and
an electrical connector including at least one longitudinal electrical connector extending along the axis and coupled to the first portion of the plurality of cooling cells along the axis.

2. The system of claim 1 , further comprising:
an electrical connection coupled to each of the first cooling cell and the second cooling cell of the plurality of cooling cells along the axis.

3. The system of claim 1 , further comprising:
a pedestal coupling each of the first cooling cell and the second cooling cell of the plurality of cooling cells to the heat-generating structure, the pedestal being aligned with the axis.

4. The system of claim 3 , wherein the first cooling cell and the second cooling cell of the plurality of cooling cells along the axis are physically connected by the pedestal.

5. The system of claim 1 , wherein the portion first cooling cell and the second cooling cell of the plurality of cooling cells along the axis are physically connected by a shared support structure forming the support structure each of the first cooling cell and the second cooling cell of the plurality of cooling cells.

6. The system of claim 1 , wherein the plurality of cooling cells are mechanically connected by at least one tab residing outside of a footprint of the plurality of cooling cells.

7. The system of claim 1 , wherein:
the plurality of cooling cells including a fifth cooling cell and a sixth cooling cell; and
the system further comprises:
an additional plurality of cooling cells, each of the additional plurality of cooling cells including an additional support structure and an additional cooling element, the additional cooling element having an additional central region having an additional axis and an additional perimeter, the additional cooling element being supported by the additional support structure at the additional central region and along the additional axis, at least a portion of the additional perimeter being unpinned, the additional cooling element being configured to undergo the vibrational motion when actuated to drive the fluid toward the heat-generating structure, the fifth cooling cell and the sixth cooling cell of the additional plurality of cooling cells aligned along the additional axis being physically connected such that the additional plurality of cooling cells form an additional integrated cooling cell tile; and
wherein the integrated cooling cell tile and the additional integrated cooling cell tile are coupled to the heat-generating structure.

8. A method, comprising:
providing a plurality of cooling cells, each of the plurality of cooling cells including a support structure and a cooling element, the cooling element having a central region having an axis and a perimeter, the plurality of cooling cells including a first cooling cell, a second cooling cell, a third cooling cell, and a fourth cooling cell, the cooling element being supported by the support structure at the central region and along the axis, at least a portion of the perimeter being unpinned, the cooling element being configured to undergo vibrational motion when actuated to drive a fluid toward a heat-generating structure, wherein a first portion of the plurality of cooling cells includes the first cooling cell and the second cooling cell, wherein the first cooling cell is physically connected to the second cooling cell, and wherein the first cooling cell and the second cooling cell are aligned along the axis such that the plurality of cooling cells form an integrated cooling cell tile;
providing a plurality of integrated tabs mechanically connecting a second portion of the plurality of cooling cells, wherein the second portion includes the third cooling cell and the fourth cooling cell; and
providing an electrical connector including at least one longitudinal electrical connector extending along the axis and coupled to the first portion of the plurality of cooling cells along the axis.

9. The method of claim 8 , further comprising:
providing an electrical connection coupled to each of the first cooling cell and the second cooling cell of the plurality of cooling cells along the axis.

10. The method of claim 8 , further comprising:
providing a pedestal configured to couple each of the first cooling cell and the second cooling cell of the plurality of cooling cells to the heat-generating structure, the pedestal being aligned with the axis.

11. The method of claim 10 , wherein the first cooling cell and the second cooling cell of the plurality of cooling cells along the axis are physically connected by the pedestal.

12. The method of claim 8 , wherein the providing the plurality of cooling cells further includes:
providing the support structure as a shared support structure, the first cooling cell and the second cooling cell of the plurality of cooling cells along the axis being physically connected by the shared support structure.

13. The method of claim 8 , wherein the providing the plurality of cooling cells further includes:
mechanically connecting the third cooling cell and the fourth cooling cell of the plurality of cooling cells by at least one tab, the at least one tab residing outside of a footprint of the plurality of cooling cells.

Assignees

• Frore Systems Inc

Inventors

• Ganti Suryaprakash
• Madhavapeddy Seshagiri Rao
• Mukundan Vikram
• Yalamarthy Ananth Saran
• Sathyamurthy Prabhu
• Gally Brian James

Classifications

• B81B7/0093

  by cooling · CPC title

• H05K7/20145

  Means for directing air flow, e.g. ducts, deflectors, plenum or guides · CPC title

• B81B2203/0118

  Cantilevers · CPC title

• H05K7/20272

  Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds · CPC title

• B81B7/0061 Primary

  suitable for fluid transfer from the MEMS out of the package or vice versa, e.g. transfer of liquid, gas, sound · CPC title