MAGNETIC INDUCTIVE CHARGING WITH LOW FAR FIELDS

  • US 20100244767A1
  • Filed: 03/27/2009
  • Published: 09/30/2010
  • Est. Priority Date: 03/27/2009
  • Status: Active Grant
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First Claim
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1. A charging station apparatus for wirelessly transmitting electrical power to mobile electronic devices (MEDs), comprising:

  • a planar charging surface;

    a first prescribed even number of series-interconnected bank A source coils;

    a second prescribed even number of series-interconnected bank B source coils; and

    source electronics for energizing the bank A and bank B source coils, wherein,whenever energized, each source coil generates an alternating electromagnetic flux field in a direction perpendicular to the charging surface,the bank A source coils and bank B source coils are alternately energized in a repeating duty cycle,the bank A source coils and bank B source coils are interleaved so that the MEDs can have any two-dimensional orientation with respect to the charging surface, andwhenever one or more MEDs each comprising a receiver coil are placed in close proximity to the charging surface, one or more of the flux fields wirelessly induce electrical power in the receiver coil.

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