Wireless charging device, electronic apparatus and information processing method

• US 9,997,949 B2
• Filed: 09/09/2015
• Issued: 06/12/2018
• Est. Priority Date: 04/13/2015
• Status: Active Grant

• Current Assignee: Lenovo Company Limited (Lenovo Group Ltd.)
• Original Assignee: Lenovo Company Limited (Lenovo Group Ltd.)
• Inventors: Chen, Xiaodong
• Primary Examiner(s): Nguyen, Nha
• Application Number:
  US14/849,215
• Publication Number:
  US 20160301237A1
• Time in Patent Office: 1,007 Days
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/43 Antennas
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A wireless charging device, an electronic apparatus and an information processing method are provided. The wireless charging device includes a charging coil and a touch panel on which the charging coil is arranged, where the touch panel includes a ground trace layer, and the charging coil is insulated from the ground trace layer. With the wireless charging device, the efficiency of wireless charging can be increased.

Claims

1. A wireless charging device, comprising:

a charging coil and a touch panel on which the charging coil is arranged, and

a first energy storing and releasing device;

wherein the touch panel comprises a ground trace layer, and the charging coil is insulated from the ground trace layer;

wherein the first energy storing and releasing device is connected to the ground trace layer; and

wherein the first energy storing and releasing device is configured to collect energy which is generated by coupling a magnetic signal emitted by the charging coil onto the ground trace layer and release the energy in a case that a preset condition is met.

2. The device according to claim 1, wherein the ground trace layer is laid with traces which are staggered with respect to each other and are spaced apart to form a plurality of hollow regions.

3. The device according to claim 2, wherein the ground trace layer is laid with H-shaped traces among which the plurality of hollow regions are formed.

4. The device according to claim 1, wherein the touch panel comprises a ground component comprising a ground carrier layer and a ground trace layer, wherein the ground carrier layer is made of insulating materials and is arranged between the charging coil and the ground trace layer.

5. The device according to claim 1, wherein the touch panel further comprises a non-touch component for carrying the charging coil.

6. The device according to claim 1, wherein the touch panel further comprises a touch component comprising a sensing carrier layer and a sensing trace layer, wherein the sensing carrier layer is made of insulating materials and is arranged between the sensing trace layer and the ground trace layer.

7. The device according to claim 6, wherein each of traces in the sensing trace layer has a same shape as each of traces in the ground trace layer.

8. The device according to claim 6, wherein the wireless charging device further comprises:

a second energy storing and releasing device connected to the sensing trace layer, wherein the second energy storing and releasing device is configured to collect energy which is generated by coupling the magnetic signal emitted by the charging coil onto the sensing trace layer and release the energy in the case that the preset condition is met.

9. The device according to claim 1, wherein the first energy storing and releasing device is arranged at a position where heat is readily dissipated.

10. The device according to claim 1, wherein the first energy storing and releasing device comprises a capacitor connected to the ground trace layer, and a resistor connected across two terminals of the capacitor.

11. An electronic apparatus, comprising a wireless charging device,

the wireless charging device comprising a charging coil and a touch panel on which the charging coil is arranged, and a first energy storing and releasing device;

wherein the touch panel comprises a ground trace layer, and the charging coil is insulated from the ground trace layer;

wherein the first energy storing and releasing device is connected to the ground trace layer; and

wherein the first energy storing and releasing device is configured to collect energy which is generated by coupling a magnetic signal emitted by the charging coil onto the ground trace layer and release the energy in a case that a preset condition is met.

12. The electronic apparatus according to claim 11, wherein the ground trace layer is laid with traces which are staggered with respect to each other and are spaced apart to form a plurality of hollow regions.

13. The electronic apparatus according to claim 12, wherein the ground trace layer is laid with H-shaped traces among which the plurality of hollow regions are formed.

14. The electronic apparatus according to claim 11, wherein the touch panel comprises a ground component comprising a ground carrier layer and a ground trace layer, wherein the ground carrier layer is made of insulating materials and is arranged between the charging coil and the ground trace layer.

15. The electronic apparatus according to claim 11, wherein the touch panel further comprises a non-touch component for carrying the charging coil.

16. The electronic apparatus according to claim 11, wherein the touch panel further comprises a touch component comprising a sensing carrier layer and a sensing trace layer, wherein the sensing carrier layer is made of insulating materials and is arranged between the sensing trace layer and the ground trace layer.

17. The electronic apparatus according to claim 16, wherein each of traces in the sensing trace layer has a same shape as each of traces in the ground trace layer.

18. The electronic apparatus according to claim 16, wherein the wireless charging device further comprises:

a second energy storing and releasing device connected to the sensing trace layer, wherein the second energy storing and releasing device is configured to collect energy which is generated by coupling the magnetic signal emitted by the charging coil onto the sensing trace layer and release the energy in the case that the preset condition is met.

19. An information processing method applied to an electronic apparatus, the electronic apparatus comprising a wireless charging device, the wireless charging device comprising a charging coil and a touch panel on which the charging coil is arranged, wherein the touch panel comprises a ground trace layer, and the charging coil is insulated from the ground trace layer;

the electronic apparatus further comprising a sensing device; and

the method comprising;

determining, with the sensing device, whether there is an object approaching the touch panel;

determining attributes of the object approaching the touch panel with characteristic parameters collected by the sensing device in a case that it is determined that there is the object approaching the touch panel;

controlling the wireless charging device to be turned off and maintaining a touch recognition function of the touch panel in a case that it is determined that the object is a human object; and

controlling the touch recognition function of the touch panel to be disabled and maintaining a wireless charging function of the wireless charging device in a case that it is determined that the object is a non-human object.