POWER TRANSMITTER DEVICE FOR INDUCTIVELY PROVIDING POWER TO A MOBILE DEVICE

• US 20150022019A1
• Filed: 11/07/2012
• Published: 01/22/2015
• Est. Priority Date: 11/30/2011
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Staring, Antonius Adriaan Maria, Swaans, Laurens Henricus
• Granted Patent: US 9,847,651 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/43 Antennas
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

An inductive power transmitter device (1) for inductively providing power to a mobile device provided with a receiver coil unit is disclosed. The transmitter device comprises a holder (3) and a coil arrangement (11). The holder (3) has a cavity (5) defined by two walls (7a,7b) providing facing surfaces (9a,9b), wherein the cavity is configured for receiving the mobile device between these facing surfaces. The coil arrangement (11) has two transmitter coil units (13a, 13b), wherein one of these coil units is arranged into one of said walls and the other of these transmitter coil units is arranged into the other of said walls, and wherein each of the coil units is configured for inductively coupling to the receiver coil unit of the mobile device when inserted into the cavity of the holder. These features allow a user to connect the mobile device to the transmitter device without being worried about the right position of the mobile device.

Claims

1. An inductive power transmitter device for inductively providing power to a mobile device comprising:

a holder having a cavity defined by two walls providing facing surfaces, the cavity being configured for receiving the mobile device between these facing surfaces, and

a coil arrangement having two transmitter coil units, wherein one of the coil units is arranged into one of the walls and the other of the transmitter coil units is arranged into the other of the walls, and wherein each of the coil units is configured for inductively coupling to the receiver coil unit of the mobile device when inserted into the cavity of the holder, wherein a clamping mechanism is provided for clamping the mobile device, when inserted into the cavity, between the facing surfaces.

2. The inductive power transmitter device as claimed in claim 1, wherein the transmitter coil units are planar coil units.

3. The inductive power transmitter device as claimed in claim 1, wherein the cavity is a slot-like cavity.

4. The inductive power transmitter device as claimed in claim 1, wherein an adjusting mechanism is provided for adjusting the distance between the facing surfaces by moving at least one of the surfaces with respect to the other.

5. The inductive power transmitter device as claimed in claim 1, wherein a securing mechanism is provided for securing the mobile device, when inserted into the cavity, between the facing surfaces.

7. The inductive power transmitter device as claimed in claim 1, wherein the coil arrangement has at least one power source for supplying electric power to the transmitter coil units.

8. The inductive power transmitter device as claimed in claim 7, wherein the at least one power source is a common power source for supplying electric power to both transmitter coil units.

9. The inductive power transmitter device as claimed in claim 1, wherein the coil arrangement has electronics for detecting the location of the receiver coil unit of the mobile device when inserted into the cavity, based on the detection result, the transmitter coil unit which is closest to the receiver coil unit is activated.

10. The inductive power transmitter device as claimed in claim 1, configured for cooperation with the mobile device provided with two receiver coil units, wherein one of the receiver coil units is provided near a main side of the mobile device and the other of the receiver coil units is provided near a further main side of the mobile device, both main sides being turned away from each other, wherein the coil arrangement has at least one power source for simultaneously supplying electric power to both transmitter coil units.

6. (canceled)

11. (canceled)

14. An inductive power transmitter system, comprising:

a mobile device; and

an inductive power transmitter device for inductively providing power to the mobile device, the inductive power transmitter comprising a holder having a cavity defined by two walls providing facing surfaces, the cavity being configured for receiving the mobile device between these facing surfaces, and a coil arrangement having two transmitter coil units, wherein one of the coil units is arranged into one of the walls and the other of the transmitter coil units is arranged into the other of the walls, and wherein each of the coil units is configured for inductively coupling to the receiver coil unit of the mobile device when inserted into the cavity of the holder, wherein a clamping mechanism is provided for clamping the mobile device, when inserted into the cavity, between the facing surfaces.

12. The inductive power transmitter system of claim 14 wherein the mobile device is provided with two receiver coil units, wherein one of the receiver coil units is provided near a main side of the mobile device and the other of the receiver coil units is provided near a further main side of the mobile device, both main sides being turned away from each other.

13. The inductive power transmitter system as claimed in claim 12, provided with at least one further receiver coil unit, provided near at least one other side.