Stator winding heat sink configuration
In one possible implementation, a motor is provided including a rotor and a stator. Front cooling fins are thermally coupled to a front of the stator, and rear cooling fins are thermally coupled to a rear portion of the stator. The winding is between the front and rear cooling fins.
1. A motor comprising:
a) a permanent magnet rotor; and
b) a stator comprising:
i) front cooling fins thermally coupled to a front of the stator via a front stator yoke;
ii) a ring of rear cooling fins thermally coupled to a rear portion of the stator via a rear stator yoke, wherein the rear cooling fins have a solid outer annular face, the rear cooling fins oriented radially and extend radially between the rear stator yoke and the outer annular face; and
iii) a winding between and separating the front stator yoke and the front cooling fins from the rear stator yoke and the ring of rear cooling fins.
2. The motor of claim 1 , wherein the front stator yoke is mounted to a front end of the winding and surrounds three sides of the front end of the winding.
3. The motor of claim 2 , wherein the front cooling fins have a solid front annular face, the front cooling fins being oriented radially and extending laterally between the front annular face and the front stator yoke.
4. The motor of claim 1 , wherein the rear stator yoke is mounted to a rear end of the winding and surrounds three sides of the rear end of the winding.
5. The motor of claim 1 , wherein the front cooling fins have an outer radius and an inner radius, the outer radius being about a same outer radius as the winding.
6. The motor of claim 5 , wherein the rotor comprises and outer rotor, and wherein the rear cooling fins have an outer radius and an inner radius, the inner radius being about at a same radius as an outer radius of the outer rotor.
7. The motor of claim 1 , wherein the rotor comprises and outer rotor, and wherein the rear cooling fins have an outer radius and an inner radius, the inner radius being about at a same radius as an outer radius of the outer rotor.
8. The motor of claim 1 , wherein the motor is an aircraft motor comprising a spinner, and wherein the front cooling fins are housed within the spinner.
9. A motor comprising:
a) an inner and outer rotor connected together;
b) a stator between the inner and outer rotors, the stator comprising:
i) a coreless winding comprising conductors encased in a thermally conductive material;
ii) a thermally conductive front yoke mounted to a front end of the winding;
iii) front cooling fins mounted to the front yoke;
iv) a thermally conductive rear yoke mounted to a rear end of the winding; and
v) rear cooling fins mounted to and surrounding the rear yoke, wherein the rear cooling fins have a solid outer annular face, the rear cooling fins being oriented radially and extending radially between the rear stator yoke and the outer annular face; and
c) wherein the winding is disposed between and separates the front yoke and the front cooling fins from the rear yoke and the rear cooling fins.
10. The motor of claim 9 , wherein the front cooling fins are mounted to a front end of the front yoke.
11. The motor of claim 10 , wherein the front yoke surrounds three sides of the front end of the winding, and wherein the rear yoke surrounds three sides of the rear end of the winding.
12. The motor of claim 9 , wherein the rear cooling fins are mounted to an outer surface of the rear yoke.
13. An aircraft motor comprising:
a) an inner and outer rotor connected together; and
b) a stator between the inner and outer rotors, the stator comprising:
i) a coreless winding comprising conductors encased in a thermally conductive material;
ii) a thermally conductive front yoke mounted to a front end of the winding;
iii) front cooling fins mounted to the front yoke, the front cooling fins have a solid front annular face, the front cooling fins being oriented radially and extending laterally between the front annular face and the front yoke;
iv) a thermally conductive rear yoke mounted to a back end of the winding; and
v) rear cooling fins mounted to the rear yoke the rear cooling fins have a solid outer annular face, the rear cooling fins oriented radially and extend radially between the rear yoke and the outer annular face.
14. The motor of claim 13 , wherein the front cooling fins have an outer radius and an inner radius, the outer radius being about a same outer radius as the winding.
15. The motor of claim 14 , wherein the rear cooling fins have an outer radius and an inner radius, the inner radius being about at a same radius as an outer radius of the outer rotor.
16. The motor of claim 13 , wherein the rear cooling fins have an outer radius and an inner radius, the inner radius being about at a same radius as an outer radius of the outer rotor.
17. The motor of claim 13 , further comprising a spinner, and wherein the front cooling fins are housed within the spinner.