Power transmitter device for inductively providing power to a mobile device

• US 9,847,651 B2
• Filed: 11/07/2012
• Issued: 12/19/2017
• 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: Swaans, Laurens Henricus, Staring, Antonius Adriaan Maria
• Primary Examiner(s): Johnson, Ryan
• Application Number:
  US14/360,032
• Publication Number:
  US 20150022019A1
• Time in Patent Office: 1,868 Days
• 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 provides power to a mobile device with a receiver coil. The transmitter device comprises a holder and a coil arrangement. The holder has a cavity defined by two walls, where the cavity is configured for receiving the mobile device between those surfaces. The coil arrangement has two transmitter coil units, where one of the coil units is arranged into one of the walls and the other transmitter coil unit is arranged into the other wall. Each of the coil units is configured for inductively coupling to the receiver coil of the mobile device when inserted into the cavity of the holder.

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 with facing surfaces, the cavity being configured for receiving the mobile device between the 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 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 in order to accommodate mobile devices of different sizes.

2. An inductive power transmitter system, comprising:

a 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, the mobile device further comprising at least one further receiver coil unit, provided near at least one other side; 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 with facing surfaces, the cavity being configured for receiving the mobile device between the 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.

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

a holder having a cavity defined by two walls with facing surfaces, the cavity being configured for receiving the mobile device between the facing surfaces;

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; and

a clamping mechanism for clamping the mobile device, when inserted into the cavity, between the two walls with the facing surfaces.

4. An inductive power transmitter system, comprising:

a mobile device;

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 with facing surfaces, the cavity being configured for receiving the mobile device between the 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; and

a clamping mechanism for clamping the mobile device, when inserted into the cavity, between the two walls with the facing surfaces.