CHARGING CIRCUIT FOR AN ENERGY STORE OF A PORTABLE ELECTRICAL DEVICE
4 Assignments
0 Petitions
Accused Products
Abstract
Charging circuit for energy store of a portable electrical device has a first resonance switching circuit with a first receiver coil for receiving an alternating magnetic field which induces an electric voltage in the first coil, and an electrical component connected to a terminal of the first coil. The first coil and the further electrical component determine a resonance frequency (f0) of the first resonance switching circuit, A second resonance circuitry is also provided and has a second receiver coil and a further electrical component which determine a resonance frequency (f1, fn) of the second resonance circuitry. The resonance frequency of the second resonance circuitry is an integer multiple of the resonance frequency of the first resonance switching circuit. Receiver coils of the resonance circuitry are disposed such that during operation they are permeated by the same magnetic field lines of the alternating magnetic field.
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Citations
21 Claims
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1-10. -10. (canceled)
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11. A charging circuit for an energy store of a portable electrical device, comprising:
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a first resonance switching circuit having a first receiver coil for receiving an alternating magnetic field that induces in the first receiver coil an electric voltage, and at least one further electrical component connected to at least one terminal of the first receiver coil, wherein the first receiver coil and the at least one further electrical component with their impedances determine a resonance frequency (f0) of the first resonance switching circuit, characterized by at least one second resonance circuitry with a second receiver coil for receiving an alternating magnetic field that induces in the second receiver coil an electric voltage, and at least one further electrical component that is connected to at least one terminal of the second receiver coil, wherein the second receiver coil and the at least one further electrical component with their impedances determine a resonance frequency (f1, fn) of the second resonance circuitry, wherein the resonance frequency of the second resonance circuitry is an integer multiple of the resonance frequency of the first resonance switching circuit, and wherein the receiver coils of the resonance circuitry are disposed such that during operation of the charging circuit they are permeated by the same magnetic field lines of the alternating magnetic field. - View Dependent Claims (12, 13, 14, 15, 16, 17, 21)
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18. A method for charging an energy store of a portable electrical device comprising the steps of:
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receiving an alternating magnetic field and inducing an electric voltage through a first receiver coil, Wherein a resonance frequency (f0) during the induction of the electric voltage is determined through the impedances of the first receiver coil and at least of one further electrical component (63, 64), which together form a first resonance switching circuit, characterized by receiving the same alternating magnetic field and inducing of an electric voltage through a second receiver coil, wherein a resonance frequency (f1, fn) is determined during the induction of the electric voltage through the impedances of the second receiver coil and at least of a further electrical component, which together form a second resonance circuitry, wherein the resonance frequency of the second resonance circuitry is determined to an integer multiple of the resonance frequency of the first resonance switching circuit, and wherein the receiver coils of the resonance circuitry are disposed such that during operation of the charging circuit they are permeated by the same magnetic field lines of the alternating magnetic field. - View Dependent Claims (19)
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20. A method for the production of a charging circuit for an energy store of a portable electrical device, comprising the steps of:
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forming a first resonance switching circuit, with a first receiver coil for receiving an alternating magnetic field which induces an electric voltage in the first receiver coil, and with at least one further electrical component which is connected to at least one terminal of the first receiver coil, wherein by determining the impedances of the first receiver coil and of the at least one further electrical component a resonance frequency (f0) of the first resonance switching circuit is determined, forming a second resonance circuitry with a second receiver coil for receiving an alternating magnetic field which induces an electric voltage in the second receiver coil, and with at least one further electrical component which is connected to at least one terminal of the second receiver coil and wherein by determining the impedances of the second receiver coil and of the at least one further electrical component a resonance frequency (f1, fn) of the second resonance circuitry is determined, wherein the resonance frequency of the second resonance circuitry is determined to an integer multiple of the resonance frequency of the first resonance switching circuit, and wherein the receiver coils of the resonance circuitry are disposed such that during operation of the charging circuit these are permeated by the same magnetic field lines of the alternating magnetic field.
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Specification