MAGNETIC POSITIONING FOR INDUCTIVE COUPLING
First Claim
1. A magnetic positioning system for use in an inductive power supply system for wirelessly transferring power from an inductive power supply to a remote device using an electromagnetic field, said magnetic positioning system comprising:
- a bonded magnet located in the electromagnetic field and said bonded magnet located in at least one of the inductive power supply and the remote device;
wherein said bonded magnet provides magnetic force for alignment of the inductive power supply and the remote device; and
wherein said bonded magnet limits heat generated in said bonded magnet by the electromagnetic field.
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Accused Products
Abstract
A magnetic positioning system for use in inductive couplings. The magnetic positioning system having a magnet that provides sufficient magnetic force, but does not have enough electrical conductivity to overheat in the presence of the anticipated electromagnetic field. The magnet may be a bonded magnet or a shielded magnet. In another aspect a plurality of magnets are used to provide magnetic attraction forces and said magnetic repulsion forces that cooperate to align the inductive power supply and the remote device. In another aspect, a sensor allows differentiation between different positions of the remote device or inductive power supply. In another aspect, multiple magnets in the inductive power supply interact with multiple magnets in the remote device to position the remote device in different positions.
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Citations
28 Claims
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1. A magnetic positioning system for use in an inductive power supply system for wirelessly transferring power from an inductive power supply to a remote device using an electromagnetic field, said magnetic positioning system comprising:
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a bonded magnet located in the electromagnetic field and said bonded magnet located in at least one of the inductive power supply and the remote device; wherein said bonded magnet provides magnetic force for alignment of the inductive power supply and the remote device; and wherein said bonded magnet limits heat generated in said bonded magnet by the electromagnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A magnetic positioning system for use in an inductive power supply system for wirelessly transferring power from an inductive power supply to a remote device using an electromagnetic field, said magnetic positioning system comprising:
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a first magnet located in at least one of said inductive power supply and said remote device, wherein said first magnet provides a magnetic force for alignment of the inductive power supply and the remote device; and a shield configured to reduce the electromagnetic field that reaches said first magnet during wireless power transfer from the inductive power supply to the remote device. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A magnetic positioning system for use in an inductive power supply system for wirelessly transferring power from an inductive power supply to a remote device using an electromagnetic field, said magnetic positioning system comprising:
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at least one of the inductive power supply and the remote device including; a first magnet having a first polarity; a second magnet having a second polarity opposite from said first polarity of said first magnet; the other one of the inductive power supply and the remote device including; a third magnet having a third polarity opposite from said first polarity of said first magnet; wherein said first magnet and said third magnet provide a magnetic attraction force; and wherein said second magnet and said third magnet provide a magnetic repulsion force; and wherein said magnetic attraction force and said magnetic repulsion force cooperate to align the inductive power supply and the remote device. - View Dependent Claims (19, 20)
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21. A magnetic positioning system for use in an inductive power supply system for wirelessly transferring power from an inductive power supply to a remote device using an electromagnetic field, said magnetic positioning system comprising:
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at least one of the inductive power supply and the remote device including a plurality of magnets; the other one of the inductive power supply and the remote device including an additional magnet; wherein said plurality of magnets and said additional magnet provide a magnetic force for alignment of the inductive power supply and the remote device into a plurality of different positions; a sensor located in at least one of the inductive power supply and the remote device, wherein said sensor is configured to provide sensor output to differentiate between said plurality of different positions; a controller located in at least one of the inductive power supply and the remote device, wherein said controller is in communication with said sensor, said controller programmed to generate an input as a function of said sensor output. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A magnetic positioning system for use in an inductive power supply system for wirelessly transferring power from an inductive power supply to a remote device using an electromagnetic field, said magnetic positioning system comprising:
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at least one of the inductive power supply and the remote device including a first plurality of magnets; the other one of the inductive power supply and the remote device including a second plurality of magnets; wherein said first plurality of magnets and said second plurality of magnets provide a magnetic force for alignment of the inductive power supply and the remote device into a plurality of different positions.
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Specification