Inductive Mobile Device Charger

Abstract

Wireless Mobile Device Charging Mat Charm with clip and battery and with or without retractable cord to re-charge the charging mat is disclosed. This invention eliminates the problem of leaving phone charging mats behind when traveling or on the go. This invention eliminates the problem of not being able to charge a phone when electricity is not available.

What is claimed is: 
     
         1 . An inductive mobile device charger comprising:
 a charging mat module comprising an inductive charging circuit comprising a coil configured to provide power to a mobile device through a pulsating magnetic field; and   a plurality of power input modules, each power input module removably attachable to the charging mat module, the plurality of power input modules comprising:
 a battery module comprising a battery, and 
 a cord module comprising a power converter circuit and a cord configured to connect to an external power source, wherein: 
   each power input module is configured to provide power to the inductive charging circuit when the battery module is attached to the charging mat module,   the cord module is configured to removably attach to the battery module,   the cord module is configured to charge the battery of the battery module when the cord module is attached to the battery module, and   the charging mat module is operable when any one of the power input modules is attached to the charging mat module.   
     
     
         2 . The inductive mobile device charger of  claim 1 , further comprising a base module attachable to a bottom of the mobile device charger and comprising a stand, the stand comprising a lever which sits flush against the base module in a first configuration and pivots outward locking at an angle in a second configuration. 
     
     
         3 . The inductive mobile device charger of  claim 1 , wherein the inductive charging circuit comprises:
 a power source;   a coil;   an inverter configured to provide power in the form of an alternating current waveform to the coil;   a voltage sensor; and   a controller configured to respond to a signal detected by the voltage sensor by causing the inverter to change the amount of power provided to the coil.   
     
     
         4 . The inductive mobile device charger of  claim 1 , wherein the cord module comprises a USB cord configured to acquire power through a USB port. 
     
     
         5 . The inductive mobile device charger of  claim 4 , wherein the USB cord is retractable. 
     
     
         6 . The inductive mobile device charger of  claim 1 , wherein the cord module comprises an electrical plug configured to acquire power through a household power outlet. 
     
     
         7 . The inductive mobile device charger of  claim 6 , wherein the electrical plug is retractable. 
     
     
         8 . The inductive mobile device charger of  claim 1 , wherein the inductive charging circuit comprises a controller circuit configured to receive communications from the mobile device requesting an amount of power needed. 
     
     
         9 . The inductive mobile device charger of  claim 8 , wherein the communications from the mobile device are accomplished through backscatter modulation. 
     
     
         10 . The inductive mobile device charger of  claim 8 , wherein the communications from the mobile device are accomplished through frequency-shift keying. 
     
     
         11 . A stackable mobile device charger, comprising:
 a charging mat module operable to provide power to a load;   a battery module comprising a battery and operable to provide power to the charging mat module and to receive power to charge the battery; and   a cord module comprising a power converter circuit and a cord configured to connect to an external power source, the cord module operable to provide power to the charging mat module or the battery module,   wherein the charger comprises at least three configurations in which the charging mat module is operable, the configurations comprising:
 a first configuration wherein the charging mat module is stacked on top of the battery module and receives power from the battery module; 
 a second configuration wherein the charging mat module is stacked on top of the cord module and receives power from the cord module; and 
 a third configuration wherein the charging mat module is stacked on top of the battery module, and the battery module is stacked on top of the cord module, the charging mat module receiving power from the battery module and the battery module receiving power from the cord module. 
   
     
     
         12 . The stackable mobile device charger of  claim 11 , wherein the cord of the cord module is retractable. 
     
     
         13 . The stackable mobile device charger of  claim 11 , wherein the cord of the cord module comprises a USB connector, and the cord module is configured to receive power from a USB port. 
     
     
         14 . The stackable mobile device charger of  claim 11 , wherein the cord of the cord module comprises an electrical plug and the cord module is configured to receive power through a household power outlet. 
     
     
         15 . The stackable mobile device charger of  claim 11 , further comprising a secondary coil configured to allow the battery module to receive power from an inductive mobile device charger. 
     
     
         16 . The stackable mobile device charger of  claim 11 , wherein the charging mat module comprises an inductive charging circuit configured to provide power to the load. 
     
     
         17 . The stackable mobile device charger of  claim 16 , wherein the inductive charging circuit comprises a controller circuit configured to receive communications from the mobile device requesting an amount of power needed. 
     
     
         18 . The stackable mobile device charger of  claim 17 , wherein the communications from the mobile device are accomplished through backscatter modulation. 
     
     
         19 . The stackable mobile device charger of  claim 17 , wherein the communications from the mobile device are accomplished through frequency-shift keying. 
     
     
         20 . An inductive mobile device charger, comprising:
 an enclosure having a top end and a bottom end;   an electrical plug on the bottom end of the enclosure; and   an inductive charging circuit,   wherein the inductive charging circuit comprises:
 a power source; 
 a coil; 
 an inverter configured to provide power in the form of an alternating current waveform to said coil; 
 a voltage sensor; and 
 a controller configured to respond to a signal detected by the voltage sensor by causing the inverter to change the amount of power provided to the coil.