Method and charging bench via magnetic coupling
First Claim
1. A method for charging via magnetic coupling performing functions of electrical charging of a portable electronic device, called a secondary device, by a charging device or bench, called a primary device, comprising at least two coils, the at least two coils being electrically out of phase, and of communicating information originating from the secondary device to the primary device, comprising:
- detecting the secondary device then located via the emission of a test signal by at least one coil of the primary device, and receiving, in return, of a signal carrying information data by at least one coil;
comparing an amplitude of the signal or signals received to at least one reference threshold;
in a selection phase, selecting the coil of the primary device closest to the secondary device and then switching, by way of mode selecting means, into a mode for charging via transmission of an energy flux; and
in the selection phase, selecting the coil of the primary device located proximate this charging coil and then switching, by way of mode selecting means, into a mode for communicating information data so as to actuate instructions contained in these data,each coil being able to function in a mode for communicating information data or in a mode for charging via transmission of an energy flux.
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Accused Products
Abstract
A charging bench includes three coils that partially overlap, in superposed planes. An electrical feed makes it possible to supply the coils with an AC current from the mains. A portable device to be charged is placed on the upper side of this charging bench. This device includes a winding intended to receive the electrical charging, and a ferrite protective screen. One of the coils (Bb) is selected to emit the magnetic charging flux toward the mobile phone. The selection is carried out via the emission of a series of pulses by at least one of the coils and comparison of return signals with a reference threshold. This comparison also enables one of the other coils (Ba, Bc) to be selected or both of these other two coils (Ba, Bc) to be used to receive a flux for communicating information originating from the portable device to be charged.
22 Citations
18 Claims
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1. A method for charging via magnetic coupling performing functions of electrical charging of a portable electronic device, called a secondary device, by a charging device or bench, called a primary device, comprising at least two coils, the at least two coils being electrically out of phase, and of communicating information originating from the secondary device to the primary device, comprising:
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detecting the secondary device then located via the emission of a test signal by at least one coil of the primary device, and receiving, in return, of a signal carrying information data by at least one coil; comparing an amplitude of the signal or signals received to at least one reference threshold; in a selection phase, selecting the coil of the primary device closest to the secondary device and then switching, by way of mode selecting means, into a mode for charging via transmission of an energy flux; and in the selection phase, selecting the coil of the primary device located proximate this charging coil and then switching, by way of mode selecting means, into a mode for communicating information data so as to actuate instructions contained in these data, each coil being able to function in a mode for communicating information data or in a mode for charging via transmission of an energy flux. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for charging via magnetic coupling performing functions of electrical charging of a portable electronic device, called a secondary device, by a charging device or bench, called a primary device, comprising at least two coils, the at least two coils being electrically out of phase, and of communicating information originating from the secondary device to the primary device, comprising:
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detecting the secondary device then located via the emission of a test signal by at least one coil of the primary device, and receiving, in return, of a signal carrying information data by at least one coil; comparing an amplitude of the signal or signals received to at least one reference threshold; in a selection phase, selecting the coil of the primary device closest to the secondary device and then switching, by way of a mode selector, into a mode for charging via transmission of an energy flux; and in the selection phase, selecting the coil of the primary device located proximate this charging coil and then switching, by the mode selector, into a mode for communicating information data so as to actuate instructions contained in these data, each coil being able to function in a mode for communicating information data or in a mode for charging via transmission of an energy flux. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification