Transmission coil module for wireless power transmitter

Patent metadata

Field	Value
Publication number	US-10097038-B2
Application number	US-201715805993-A
Country	US
Kind code	B2
Filing date	Nov 7, 2017
Priority date	Dec 17, 2015
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A wireless power transmission coil module including a plurality of transmission coils for wirelessly transmitting power; a shield disposed below the plurality of transmission coils; a metal plate disposed below the shield; and a connector electrically connected to the plurality of transmission coils. The metal plate includes a recess having a space for disposing the connector, and the connector includes an inner portion overlapping the shield and an outer portion without overlapping with the shield.

First claim

What is claimed is:

1. A wireless power transmission coil module comprising:
a plurality of transmission coils for wirelessly transmitting power;
a shield disposed below the plurality of transmission coils;
a metal plate disposed below the shield; and
a connector electrically connected to the plurality of transmission coils,
wherein the metal plate includes a recess having a space for disposing the connector, and
wherein the connector includes an inner portion overlapping the shield and an outer portion without overlapping with the shield.

2. The wireless power transmission coil module according to claim 1 , wherein the connector includes a plurality of pins at the outer portion of the connector, and
wherein the plurality of transmission coils include a plurality of lead wires for connection with the plurality of pins.

3. The wireless power transmission coil module according to claim 2 , wherein each of the plurality of pins include an upper terminal exposed to an upper side of the outer portion and a lower terminal exposed to a lower side of the outer portion.

4. The wireless power transmission coil module according to claim 3 , wherein one lead wire among the plurality of lead wires is connected to two upper terminals among the plurality of pins.

5. The wireless power transmission coil module according to claim 2 , wherein each of the lead wires extends in a same direction to the plurality of pins.

6. The wireless power transmission coil module according to claim 2 , wherein the plurality of pins are spaced from the shield.

7. The wireless power transmission coil module according to claim 6 , wherein a first distance from the plurality of pins to a first edge of the connector is greater than a second distance from the plurality of pins to a second edge of the connector opposite to the first edge, and
wherein the second edge is laterally exposed from the shield.

8. The wireless power transmission coil module according to claim 2 , wherein the connector includes twelve pins, and
wherein the plurality of transmission coils include six lead wires.

9. The wireless power transmission coil module according to claim 8 , wherein each lead wire and two pins include a laser-solder joint.

10. The wireless power transmission coil module according to claim 1 , wherein the inner portion of the connector is disposed at the recess, and
wherein the inner portion is disposed below the shield.

11. The wireless power transmission coil module according to claim 1 , further comprising:
a double-sided tape bonding the inner portion and the shield, and bonding the shield and the metal plate.

12. The wireless power transmission coil module according to claim 3 , wherein a length of the upper terminal is shorter than a length of the lower terminal.

13. The wireless power transmission coil module according to claim 1 , wherein an area of the connector is smaller than an area of the shield.

14. The wireless power transmission coil module according to claim 3 , wherein the lower terminal is connected to a control circuit board controlling an operation of the wireless power transmission coil module.

15. A wireless power transmission coil module comprising:
a plurality of transmission coils for wirelessly transmitting power;
a shield disposed below the plurality of transmission coils; and
a connector electrically connected to the plurality of transmission coils,
wherein the connector includes an inner portion overlapping the shield, an outer portion without overlapping the shield, and a plurality of pins provided on the outer portion of the connector,
wherein each of the plurality of pins include an upper terminal exposed to an upper side of the outer portion and a lower terminal exposed to a lower side of the outer portion, and
wherein the plurality of transmission coils include a plurality of lead wires for connection with the plurality of pins.

16. The wireless power transmission coil module according to claim 15 , wherein one lead wire among the plurality of lead wires is connected to two upper terminals among the plurality of pins.

17. The wireless power transmission coil module according to claim 15 , wherein each of the lead wires extends in a same direction to the plurality of pins.

18. The wireless power transmission coil module according to claim 15 , wherein the plurality of pins are spaced from the shield.

19. The wireless power transmission coil module according to claim 18 , wherein a first distance from the plurality of pins to a first edge of the connector is greater than a second distance from the plurality of pins to a second edge of the connector opposite to the first edge, and
wherein the second edge is laterally exposed from the shield.

20. The wireless power transmission coil module according to claim 15 , wherein the connector includes twelve pins, and
wherein the plurality of transmission coils include six lead wires.

21. The wireless power transmission coil module according to claim 20 , wherein each lead wire and two pins include a laser-solder joint.

22. The wireless power transmission coil module according to claim 15 ,
wherein the inner portion is disposed below the shield.

23. The wireless power transmission coil module according to claim 15 , further comprising:
a double-sided tape bonding the inner portion and the shield, and bonding the shield and the metal plate.

24. The wireless power transmission coil module according to claim 15 , wherein a length of the upper terminal is shorter than a length of the lower terminal.

25. The wireless power transmission coil module according to claim 15 , wherein an area of the connector is smaller than an area of the shield.

26. The wireless power transmission coil module according to claim 15 , wherein the lower terminal is connected to a control circuit board controlling an operation of the wireless power transmission coil.

Assignees

• Lg Innotek Co Ltd

Inventors

• Leem Sung Hyun

Classifications

• H02J50/70

  involving the reduction of electric, magnetic or electromagnetic leakage fields · CPC title

• H02J50/10 Primary

  using inductive coupling · CPC title

• H01F27/2885

  with shields or electrodes (shields or electrodes for pancake coils H01F27/2871; construction of electric or magnetic shields or screens H01F27/36) · CPC title

• H02J50/40

  using two or more transmitting or receiving devices (H02J50/50 takes precedence) · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title