Thermo-mechanical magnetic coupler

Patent metadata

Field	Value
Publication number	US-11749438-B2
Application number	US-201816011643-A
Country	US
Kind code	B2
Filing date	Jun 19, 2018
Priority date	Jun 19, 2018
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

An electromagnetic mooring system (MMS) that includes a first object and a second object, at least one of which includes an electronic coupler configured to connect the first object with the second object. The electronic coupler comprises a pair of magnets, at least one of which is an electro permanent magnet (EPM), having a flux path. When the electronic coupler is in the ON states, the flux path moves towards the first or second object transferring heat from the first or second object to the second or first object, and when the electronic coupler is in the OFF state, the flux paths moves towards the EPM.

First claim

The invention claimed is:

1. A magnetic coupler for an electromagnetic mooring system (MMS) configured to create coupling between at least one magnet and an adjacent structure, comprising:
the at least one magnet is an electro permanent magnet (EPM), wherein the EPM comprises a first state of polarity and a second state of polarity, the first state is an attracting state and the second state is an OFF state;
the adjacent structure comprising a magnet or a ferromagnetic material;
depending on a state of polarity of the at least one magnet, a magnetic field is established, the magnetic field establishes a clamping force, the clamping force establishes a molecular contact and the molecular contact establishes a heat path, allowing heat to flow through the heat path between the at least one magnet and the adjacent structure, or flow outwards from the at least one magnet to the adjacent structure; and
a thermally conductive material between the at least one magnet and the adjacent structure, wherein
the thermally conductive material making the molecular-level contact with the adjacent structure, creating a high thermal conductance path with minimally applied pressure,
the high thermal conductance path is the heat path regulating temperature of the attached the adjacent structure, and
the minimally applied pressure is a minimum force applied to a contact area of the thermally conductive material establishing the molecular-level contact of the thermally conductive material.

2. The magnetic coupler of claim 1 , further comprising:
thermally conductive material exposed to space, and when a compressive force is applied against the adjacent magnet or adjacent material, transfer of heat is facilitated to or from the other magnet or adjacent material, and
when non-compressive force is applied, or the thermally conductive material is separated from, the other magnet or adjacent material, the heat is prevented from transferring to or from the other magnet or adjacent material.

3. The magnetic coupler of claim 2 , wherein,
when the magnetic coupler is switched to the attracting state, and the thermally conductive material is pressed against the other magnet or adjacent material, the high thermal conductance path is created to facilitate the transfer of the heat to or from the other magnet or adjacent material, and
when the magnetic coupler is switched to the OFF state, and a low or zero conductance path is formed preventing the transfer of the heat to or from the other magnet or adjacent material.

4. The magnetic coupler of claim 3 , wherein the high thermal conductance path is established by applying a low force through the thermally conductive material, resulting in low pressure in the thermally conductive material and high thermal conductance in the heat path.

5. The magnetic coupler of claim 2 , wherein the thermally conductive material is deposited or applied on one or more contact pads of the magnetic coupler, wherein the depositing of, or the application of, the thermally conductive material prevents cold welding from occurring.

6. The magnetic coupler of claim 1 , wherein, when the magnetic coupler is pressed against another body, a current to reverse polarity is provided to attract the other body to the magnetic coupler.

7. The magnetic coupler of claim 6 , wherein the current is maintained for a predefined period of time to generate a magnetic field within a coil of the magnetic coupler,
the magnetic field is configured to reverse the magnetic polarity in the at least one magnet.

8. The magnetic coupler of claim 7 , wherein, when the magnetic polarity of the at least one magnet is reversed, the current is removed from the coil without affecting the magnetic polarity of the at least one magnet.

9. The magnetic coupler of claim 1 , further comprising:
a separate heat path comprising thermal conductive material configured to transfer heat when the magnetic coupler is connected to another body.

10. The magnetic coupler of claim 1 , wherein the at least one magnet comprise a permanent magnet facing the adjacent structure.

11. An electromagnetic mooring system (MMS) configured to create a coupling between a pair of magnets, comprising:
a first object and a second object, at least one of the first object or the second object comprises an electronic coupler connecting the first object and the second object together, wherein
the electronic coupler comprises the pair of magnets, at least one of which is an electro permanent magnet (EPM), having a magnetic reversible flux path,
the electronic coupler further comprises a thermally conductive material between the pair of magnets, the thermally conductive material making molecular-level contact with the first object or the second object, creating a high thermal conductance path with minimally applied pressure,
the high thermal conductance path is the heat path allowing for temperature regulation of the first object or the second object,
the minimally applied pressure is a minimum force applied to a contact area of the thermally conductive material establishing the molecular-level contact of the thermally conductive material,
when the electronic coupler is in an ON state, the magnetic flux path moves towards the first or second object facilitating the transferring of heat from the first or second object to the second or first object, and
when the electronic coupler is in the OFF state, the flux path moves towards the EPM and the heat transfer is inhibited.

12. The MMS of claim 11 , wherein the thermally conductive material exposed to space, and when pressed against the first object or the second object, transfer of heat is facilitated to the first object or the second object.

13. The MMS of claim 12 , wherein, when the magnetic coupler is switched to an ON state, and the thermally conductive material is pressed against the first object or the second object, a high thermal conductance path is formed to facilitate the transfer of heat to first object or the second object.

14. The MMS of claim 13 , wherein the high thermal conductance path is established by applying a low force through the thermally conductive material, resulting in low pressure in the thermally conductive material and high thermal conductance in the heat path.

15. The MMS of claim 12 , wherein the thermally conductive material is deposited or applied on one or more contact pads of the magnetic coupler, the depositing of, or the application of, the thermally conductive material prevents cold welding from occurring.

16. The MMS of claim 11 , wherein, when the magnetic coupler is pressed against first object or the second object, a current to reverse polarity is provided to attract the first object or the second object to the magnetic coupler.

17. The MMS of claim 16 , wherein the current is maintained for a predefined period of time to generate a magnetic field within a coil of the magnetic coupler, the magnetic field is further configured to reverse the magnetic polarity in at least one of the pair of magnets.

18. The MMS of claim 17 , wherein, when the magnetic polarity of at least one of the pair of magnets is reversed, the current is removed from the coil without affecting the polarity of one of the at least one of the pair of magnets.

19. The MMS of claim 11 , wherein the magnetic coupler comprises a separate heat path comprising thermal conductive material configured to transfer heat when the magnetic coupler is connected to another body.

20. The MMS of claim 11 , wherein one of the pair of magnets co

Assignees

• Aerospace Corp

Inventors

• Denham Donald Wayne
• Mchale John Patrick

Classifications

• H01F7/20 Primary

  without armatures (cores H01F3/00; coils H01F5/00 {; shaping metal by applying magnetic forces B21D26/14; electromagnets specially adapted for NMR applications G01R33/381}) · CPC title

• F16B1/00

  Devices for securing together, or preventing relative movement between, constructional elements or machine parts · CPC title

• H01F7/021

  Construction of PM (H01F7/0278 takes precedence; PM compositions H01F1/032) · CPC title

• F16B2001/0035

  Mechanical Engineering · mapped topic

• H01F2007/208

  combined with permanent magnets · CPC title