Heatsink assembly for unmanned aerial vehicle
A UAV heatsink assembly including two heat pipes, a first and second heat pipes including transfer and end portions, the end portions thermally connected to first and second metallic heat transfer elements, and a third metallic heat transfer element thermally connected to opposite ends of the heat pipes. A CPU thermally connected to the third metallic heat transfer element with first and second electrically insulating thermoplastic elements into which the respective first and second metallic components fit where the first and second electrically insulating thermoplastic elements are not between an outside ambient environment and the first and second metallic components. The heat pipes each include a wick structure and an embedded liquid providing thermal transport therein while at least some of the embedded liquids are above a threshold temperature between −40° C. and 70° C. such that the UAV is at least operable above −40° C. degrees and below 70° C.
1. A heatsink assembly for an unmanned aerial vehicle comprising:
a first heat pipe including a first transfer portion between a first end portion and a second end portion;
a second heat pipe including a second transfer portion between a third end portion and a fourth end portion;
a first metallic heat transfer element thermally connected to the first end portion;
a second metallic heat transfer element thermally connected to the third end portion;
a third metallic heat transfer element thermally connected to the second end portion and the fourth end portion;
a computer processing unit that produces heat that is thermally connected to the third metallic heat transfer element;
a first electrically insulating thermoplastic element into which the first metallic heat transfer element fits such that a surface area of the first metallic heat transfer element is thermally connected to an outside ambient environment where the first electrically insulating thermoplastic element is not between the outside ambient environment and the first metallic heat transfer element; and a second electrically insulating thermoplastic element into which the second metallic heat transfer element fits such that a surface area of the second metallic heat transfer element is thermally connected to the outside ambient environment where the second electrically insulating thermoplastic element is not between the outside ambient environment and the second metallic heat transfer element,
wherein the first heat pipe includes a first wick structure and a first embedded liquid providing thermal transport within the first heat pipe while at least some of the first embedded liquid is above a threshold temperature,
wherein the second heat pipe includes a second wick structure and a second embedded liquid providing thermal transport within the second heat pipe while at least some of the second embedded liquid is above the threshold temperature,
wherein the unmanned aerial vehicle is at least operable at temperatures above −40° C. degrees and is at least operable at temperatures below 70° C., and
wherein the threshold temperature is between −40° C. and 70° C.
2. The heatsink assembly of claim 1 , further comprising:
a third electrically insulating thermoplastic element,
wherein the third metallic heat transfer element includes an extension piece,
wherein the computer processing unit is between the extension piece of the third metallic heat transfer element and the third electrically insulating thermoplastic element, and
wherein the third electrically insulating thermoplastic element electrically insulates the computer processing unit from a fourth metallic heat transfer element.
3. The heatsink assembly of claim 1 , further comprising:
a fourth metallic heat transfer element adjacent to a third electrically insulating thermoplastic element such that the third electrically insulating thermoplastic element is between the fourth metallic heat transfer element and the computer processing unit.
4. The heatsink assembly of claim 1 , wherein the first metallic heat transfer element includes aluminum.
5. The heatsink assembly of claim 1 , wherein the second metallic heat transfer element includes aluminum.
6. The heatsink assembly of claim 1 , wherein the third metallic heat transfer element includes aluminum.
7. The heatsink assembly of claim 1 , wherein a fourth metallic heat transfer element includes aluminum.
8. The heatsink assembly of claim 7 ,
wherein the fourth metallic heat transfer element includes a relay electrically connected to the computer processing unit, and
wherein the relay is electrically isolated from the aluminum of the fourth metallic heat transfer element.