Wireless power transmission apparatus and wireless power transmission method
First Claim
1. A wireless power transmission apparatus comprising:
- a first power converting unit to generate high-frequency AC signals;
a second power converting unit to generate low-frequency AC signals;
a first coil receiving the high-frequency AC signals and transmitting a wireless power through a first power transmission scheme;
a second coil receiving the low-frequency AC signals and transmitting the wireless power through a second power transmission scheme; and
a control unit to control the first and second coils,wherein the control unit is configured to;
activate the first power converting unit and transmit a detection signal for the first power transmission scheme to a wireless power reception apparatus through the first coil,detect a reception of a first response signal corresponding to the first detection signal during a first predetermined time period,determine a power transmission scheme of the wireless power reception apparatus as the first power transmission scheme, in response to a detection of the first response signal during the first predetermined time period,deactivate the first power converting unit, activate the second power converting unit, and transmit a second detection signal to the wireless power reception apparatus through the second coil, in response to no detection of the first response signal during the first predetermined time period,detect a reception of a second response signal corresponding to the second detection signal during a second predetermined time period, anddetermine the power transmission scheme of the wireless power reception apparatus as a second power transmission scheme, in response to a detection of the second response signal during the second predetermined time period.
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Accused Products
Abstract
The embodiment relates to a wireless power transmission apparatus and a wireless power transmission method. The wireless power transmission apparatus includes a first power converting unit to generate high-frequency AC signals; a second power converting unit to generate low-frequency AC signals; a first coil receiving the high-frequency AC signals and transmitting a wireless power through a first power transmission scheme; a second coil receiving the low-frequency AC signals and transmitting the wireless power through a second power transmission scheme; and a control unit to control the first and second coils, wherein the control unit is configured to transmit a detection signal for the first power transmission scheme to a wireless power reception apparatus through the first coil, detect a reception of a first response signal corresponding to the first detection signal during a first predetermined time, determine a power transmission scheme of the wireless power reception apparatus as the first power transmission scheme in response to a detection of the first response signal, and deactivate the first power converting unit in response to no detection of the first response signal.
254 Citations
16 Claims
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1. A wireless power transmission apparatus comprising:
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a first power converting unit to generate high-frequency AC signals; a second power converting unit to generate low-frequency AC signals; a first coil receiving the high-frequency AC signals and transmitting a wireless power through a first power transmission scheme; a second coil receiving the low-frequency AC signals and transmitting the wireless power through a second power transmission scheme; and a control unit to control the first and second coils, wherein the control unit is configured to; activate the first power converting unit and transmit a detection signal for the first power transmission scheme to a wireless power reception apparatus through the first coil, detect a reception of a first response signal corresponding to the first detection signal during a first predetermined time period, determine a power transmission scheme of the wireless power reception apparatus as the first power transmission scheme, in response to a detection of the first response signal during the first predetermined time period, deactivate the first power converting unit, activate the second power converting unit, and transmit a second detection signal to the wireless power reception apparatus through the second coil, in response to no detection of the first response signal during the first predetermined time period, detect a reception of a second response signal corresponding to the second detection signal during a second predetermined time period, and determine the power transmission scheme of the wireless power reception apparatus as a second power transmission scheme, in response to a detection of the second response signal during the second predetermined time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless power transmission method of a wireless power transmission apparatus having a plurality of power transmission schemes, the method comprising:
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activating a first transmission control unit that detects a first power transmission scheme for high-frequency AC signals; transmitting a detection signal for the first power transmission scheme to a wireless power reception apparatus; detecting a reception of a first response signal corresponding to the first detection signal during a first predetermined time period; determining a power transmission scheme of the wireless power reception apparatus as the first power transmission scheme, in response to a detection of the first response signal during the first predetermined time period; deactivating the first transmission control unit, activing a second transmission control unit that detects a second power transmission scheme for low-frequency AC signals, and transmitting a second detection signal for a second power transmission scheme to the wireless power reception apparatus, in response to no detection of the first response signal during a first predetermined time period; detecting a reception of a second response signal corresponding to the second detection signal during a second predetermined time period; and determining the power transmission scheme of the wireless power reception apparatus as a second power transmission scheme, in response to a detection of the second response signal during the second predetermined time period. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification