METHOD AND CHARGING BENCH VIA MAGNETIC COUPLING
First Claim
1. A method for charging via magnetic coupling performing the functions of electrical charging of a portable electronic device (5) to be charged, called the secondary device (5), by a charging device or bench (1), called the primary device (1), comprising at least two coils (Ba, Bb, Bc;
- B1, B2 . . . Bn), and of communicating information (8;
83, 84) originating from the secondary device (5) to the primary device (1),the secondary device (5) being detected (I) then located (II) via the emission of a test signal (80) by at least one coil (Bb;
B2, B5) of the primary device (1), and the reception, in return, of a signal (51, 52) carrying information data (61, 62) by at least one coil (Bc;
B(n+1), B(n+2)),the amplitude (VBn, VB(n+1), VB(n+2)) of the signal or signals received being compared to at least one reference threshold (K0.Vi;
K1.Vi, K2.Vi, K3.Vi),the method being characterized in that;
in a selection phase (III), the coil (Bb;
B(n+1), B(n+2)) of the primary device (1) closest to the secondary device (5) is selected and then switched, by way of mode selecting means (33, 34), into a mode for charging via transmission of an energy flux (2), andin the selection phase (III), the coil (Bc;
Bn, B(n+1)) of the primary device (1) located proximate this charging coil (Bb;
B(n+1), B(n+2)) is selected and then switched, by way of mode selecting means (33, 34), into a mode for communicating information data (61, 62) so as to actuate instructions contained in these data,each coil (Bc;
Bb, Bn, B(n+1), B(n+2)) 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.
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Citations
10 Claims
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1. A method for charging via magnetic coupling performing the functions of electrical charging of a portable electronic device (5) to be charged, called the secondary device (5), by a charging device or bench (1), called the primary device (1), comprising at least two coils (Ba, Bb, Bc;
- B1, B2 . . . Bn), and of communicating information (8;
83, 84) originating from the secondary device (5) to the primary device (1),the secondary device (5) being detected (I) then located (II) via the emission of a test signal (80) by at least one coil (Bb;
B2, B5) of the primary device (1), and the reception, in return, of a signal (51, 52) carrying information data (61, 62) by at least one coil (Bc;
B(n+1), B(n+2)),the amplitude (VBn, VB(n+1), VB(n+2)) of the signal or signals received being compared to at least one reference threshold (K0.Vi;
K1.Vi, K2.Vi, K3.Vi),the method being characterized in that; in a selection phase (III), the coil (Bb;
B(n+1), B(n+2)) of the primary device (1) closest to the secondary device (5) is selected and then switched, by way of mode selecting means (33, 34), into a mode for charging via transmission of an energy flux (2), andin the selection phase (III), the coil (Bc;
Bn, B(n+1)) of the primary device (1) located proximate this charging coil (Bb;
B(n+1), B(n+2)) is selected and then switched, by way of mode selecting means (33, 34), into a mode for communicating information data (61, 62) so as to actuate instructions contained in these data,each coil (Bc;
Bb, Bn, B(n+1), B(n+2)) 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, 10)
- B1, B2 . . . Bn), and of communicating information (8;
Specification