Transmission coil module for wireless power transmitter
A wireless power transmission coil module includes a first coil and a second coil; a third coil on the first coil and the second coil; and a coil frame receiving the first coil, the second coil and the third coil. In addition, a first surface of the coil frame comprises a first receptacle for receiving the first coil and a second receptacle for receiving the second coil, a second surface of the coil frame opposite to the first surface of the coil frame comprises a third receptacle for receiving the third coil, and the first receptacle does not overlap the second receptacle in a first direction perpendicular to the first surface of the coil frame.
1. A wireless power transmission coil module comprising:
a coil frame comprising a first surface and a second surface opposite to the first surface, the first surface and the second surface being outer planar surfaces of the wireless power transmission coil module; and
a plurality of transmission coils disposed into the coil frame,
wherein the coil frame comprises:
a first receptacle provided in the first surface;
a second receptacle provided in the second surface; and
a third receptacle provided in the second surface, and
wherein the plurality of transmission coils comprises:
a first coil disposed into the first receptacle;
a second coil disposed into the second receptacle; and
a third coil disposed into the third receptacle.
2. The wireless power transmission coil module according to claim 1 , wherein the first receptacle overlaps the second receptacle in a first direction perpendicular to the first surface of the coil frame.
3. The wireless power transmission coil module according to claim 2 , wherein the first receptacle does not overlap the second receptacle in a second direction parallel to the first surface of the coil frame.
4. The wireless power transmission coil module according to claim 3 , wherein the first coil overlaps the second coil in the first direction.
5. The wireless power transmission coil module according to claim 4 , wherein the first coil does not overlap the second coil in the second direction.
6. The wireless power transmission coil module according to claim 1 , wherein the coil frame comprises a first support plate surrounding a first side surface of the first coil.
7. The wireless power transmission coil module according to claim 6 , wherein the coil frame comprises a second support plate surrounding a second side surface of the first coil opposite to the first side surface.
8. The wireless power transmission coil module according to claim 7 , wherein the first support plate or the second support plate covers a top surface of the second coil.
9. The wireless power transmission coil module according to claim 1 , wherein the coil frame comprises a first central fixing plate in the first receptacle.
10. The wireless power transmission coil module according to claim 9 , wherein the coil frame comprises a second central fixing plate in the second receptacle.
11. The wireless power transmission coil module according to claim 2 , wherein the coil frame comprises a lead wire insertion terminal for inserting lead wires of the first coil and the second coil.
12. The wireless power transmission coil module according to claim 11 , further comprising a connector including an upper terminal connected to the lead wires of the first coil and the second coil and a lower terminal connected to an external control circuit board.
13. The wireless power transmission coil module according to claim 12 , wherein the connector overlaps the coil frame in the first direction.
14. A coil frame comprising:
a first receptacle in a first surface of the coil frame;
a second receptacle in a second surface of the coil frame; and
a third receptacle in the second surface,
wherein the first surface and the second surface are outer planar surfaces of the coil frame, and
wherein the first receptacle overlaps the second receptacle and the third receptacle in a first direction perpendicular to the first surface of the coil frame.
15. The coil frame according to claim 14 , wherein the first receptacle does not overlap the second receptacle in a second direction parallel to the first surface of the coil frame.
16. The coil frame according to claim 15 , further comprising a first support plate surrounding a first side surface of a first coil disposed at the first receptacle.
17. The coil frame according to claim 16 , further comprising a second support plate surrounding a second side surface of the first coil opposite to the first side surface.
18. The coil frame according to claim 17 , wherein the first support plate or the second support plate forms the second receptacle.
19. The coil frame according to claim 14 , further comprising a first central fixing plate in the first receptacle.
20. The coil frame according to claim 19 , further comprising a second central fixing plate in the second receptacle.