Wireless charging system and method
First Claim
1. A method for wirelessly charging a mobile terminal using electromagnetic induction between a first coil included in a charging pad and a second coil included in the mobile terminal, the method comprising:
- detecting a location of the mobile terminal on the charging pad;
moving the first coil to correspond to the detected location of the mobile terminal;
supplying power to the first coil for charging a battery in the mobile terminal; and
when a charging efficiency is less than a preset reference value, receiving from the mobile terminal a control signal requesting a location movement of the first coil, and moving a location of the first coil according to the control signal.
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Accused Products
Abstract
A wireless charging system can optimize charging efficiency regardless of a location of a mobile terminal. The wireless charging system wirelessly charges a mobile terminal using electromagnetic induction between a first coil included in a charging pad and a second coil included in the mobile terminal. The charging pad can detect a location of the mobile terminal on the charging pad. The charging pad can move the first coil to correspond to the detected location of the mobile terminal; and supply power to the first coil and charging a battery.
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Citations
20 Claims
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1. A method for wirelessly charging a mobile terminal using electromagnetic induction between a first coil included in a charging pad and a second coil included in the mobile terminal, the method comprising:
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detecting a location of the mobile terminal on the charging pad; moving the first coil to correspond to the detected location of the mobile terminal; supplying power to the first coil for charging a battery in the mobile terminal; and when a charging efficiency is less than a preset reference value, receiving from the mobile terminal a control signal requesting a location movement of the first coil, and moving a location of the first coil according to the control signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless charging system using electromagnetic induction, the wireless charging system comprising:
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a charging pad comprising a first coil configured to generate a magnetic field when power is supplied; and a mobile terminal comprising a second coil configured to charge a battery using an induction current induced to the second coil when the magnetic field is generated in the first coil; wherein the charging pad is configured to determine a contact location of the mobile terminal and move the first coil to correspond to the location of the mobile terminal, wherein the mobile terminal is configured to determine a charging efficiency and, when the charging efficiency is less than a preset reference value, transmit a control signal requesting a location movement of the first coil to the charging pad. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. An apparatus for charging a battery of a mobile terminal using electromagnetic induction, the apparatus comprising:
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a charging pad comprising a first coil configured to generate a magnetic field when power is supplied, wherein the first coil is adapted to electromagnetically couple to a second coil included in a a mobile terminal such that an induction current is induced to the second coil in response to a magnetic field generated in the first coil, wherein the charging pad is configured to determine a location of the mobile terminal and move the first coil to correspond to the location of the mobile terminal, and wherein the charging pad is further configured to, when a charging efficiency is less than a preset reference value, receive from the mobile terminal a control signal requesting a location movement of the first coil, and move a location of the first coil according to the control signal. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification