DEVICE, SYSTEM, AND METHOD FOR INDUCTIVE CHARGING
First Claim
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1. An inductive charging device to supply power to a subject charging terminal, the device comprising:
- a primary coil to induce a current in a secondary coil of the subject charging terminal;
a power supply section to supply a voltage to the primary coil; and
a first control section to control the supply of the voltage and to change an attribute of the primary coil to maximize transmission efficiency of the electromagnetic induction.
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Abstract
In a device system, and method for inductive charging, an efficiency of transmission of electromagnetic induced power may be maximized. Specifically, a control portion of a charging device may change an attribute, such as position or area, of a primary coil as to be more aligned with a secondary coil of to be charged device.
49 Citations
20 Claims
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1. An inductive charging device to supply power to a subject charging terminal, the device comprising:
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a primary coil to induce a current in a secondary coil of the subject charging terminal; a power supply section to supply a voltage to the primary coil; and a first control section to control the supply of the voltage and to change an attribute of the primary coil to maximize transmission efficiency of the electromagnetic induction. - View Dependent Claims (2, 3, 4, 5, 17)
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6. An inductive charging system, the system comprising:
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an inductive charging device to supply power to the subject charging terminal, the inductive charging device comprising; a primary coil to induce a current, a power supply section to supply a voltage to the primary coil, and a first control section to control the power supply section; and the subject charging terminal comprising; the secondary coil magnetically coupled to the primary coil and to generate an induced voltage, and a battery to receive the induced voltage, wherein the first control section changes an attribute of the primary coil to maximize transmission efficiency of the electromagnetic induction. - View Dependent Claims (7, 8, 9, 10, 18)
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11. A method for inductive charging, the method comprising:
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detecting whether a subject charging terminal is placed on an inductive charging device; applying power to a primary coil of the inductive charging device; changing an attribute of the primary coil to achieve a maximum transmission efficiency of electromagnetic induction between a secondary coil of the subject charging terminal and the primary coil; detecting an induced voltage of the secondary coil; detecting a point at which the maximum transmission efficiency is achieved; and fixing the attribute corresponding to the point. - View Dependent Claims (12, 13, 14, 15, 16, 19, 20)
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Specification