Power transmitter device for inductively providing power to a mobile device

Abstract

An inductive power transmitter device for inductively providing power to a mobile device provided with a receiver coil unit is disclosed. The transmitter device comprises a holder and a coil arrangement. The holder has a cavity defined by two walls providing facing surfaces, wherein the cavity is configured for receiving the mobile device between these facing surfaces. The coil arrangement has two transmitter coil units, 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.

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.   
     
     
         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 a securing mechanism is provided for securing the mobile device, when inserted into the cavity, between the facing surfaces. 
     
     
         5 . 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. 
     
     
         6 . The inductive power transmitter device as claimed in  claim 5 , wherein the at least one power source is a common power source for supplying electric power to both transmitter coil units. 
     
     
         7 . The inductive power transmitter device as claimed in  claim 1 , wherein the coil arrangement is configured for detecting a location of the receiver coil unit of the mobile device when inserted into the cavity, and wherein based on the detection the transmitter coil unit which is closest to the receiver coil unit is activated. 
     
     
         8 . 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.