Power transmitting apparatus, method of controlling the same, and power transmission system
First Claim
1. A power transmitting apparatus, comprising:
- a power transmission unit configured to perform wireless power transmission to a power receiving apparatus within a predetermined power transmission range;
a detection unit configured to detect a change of impedance of the power transmission unit while a predetermined detection signal is transmitted by the power transmission unit;
a communication unit configured to perform communication with respect to the wireless power transmission by the power transmission unit, wherein the communication unit is configured to receive a message after the change of impedance of the power transmission unit is detected by the detection unit;
a discrimination unit configured to discriminate whether or not information indicating that a wireless power transmission service is supported is included in the message received by the communication unit; and
a control unit configured to, in a case where the discrimination unit discriminates that the information is included in the message, determine that a transmission source of the message is a target for the wireless power transmission by the power transmission unit, and, in a case where the discrimination unit discriminates that the information is not included in the message, determine that a transmission source of the message is not a target for the wireless power transmission by the power transmission unit.
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Accused Products
Abstract
Foreign substance detection can be performed with a simple configuration in a power transmission system. A power transmitting apparatus that wirelessly transmits power to a power receiving apparatus, the power transmitting apparatus comprises: determination means for, in a case where an initial impedance value and the detected output impedance value do not match and there is no change in the output impedance value between before and after the transmission of a predetermined detection signal, determining that a foreign substance is present within a predetermined power transmission range, and, in a case where the initial impedance value and the detected output impedance value do not match and there is a change in the output impedance value between before and after the transmission of the predetermined detection signal, determining that a power receiving apparatus is present within the predetermined power transmission range.
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Citations
21 Claims
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1. A power transmitting apparatus, comprising:
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a power transmission unit configured to perform wireless power transmission to a power receiving apparatus within a predetermined power transmission range; a detection unit configured to detect a change of impedance of the power transmission unit while a predetermined detection signal is transmitted by the power transmission unit; a communication unit configured to perform communication with respect to the wireless power transmission by the power transmission unit, wherein the communication unit is configured to receive a message after the change of impedance of the power transmission unit is detected by the detection unit; a discrimination unit configured to discriminate whether or not information indicating that a wireless power transmission service is supported is included in the message received by the communication unit; and a control unit configured to, in a case where the discrimination unit discriminates that the information is included in the message, determine that a transmission source of the message is a target for the wireless power transmission by the power transmission unit, and, in a case where the discrimination unit discriminates that the information is not included in the message, determine that a transmission source of the message is not a target for the wireless power transmission by the power transmission unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of controlling a power transmitting apparatus that includes:
- a power transmission unit configured to perform wireless power transmission to a power receiving apparatus within a predetermined power transmission range, and a communication unit configured to perform communication with respect to the wireless power transmission by the power transmission unit, the method comprising;
detecting a change of impedance of the power transmission unit while a predetermined detection signal is transmitted by the power transmission unit; receiving a message via the communication unit after detecting the change of impedance of the power transmission unit; discriminating whether or not information indicating that a wireless power transmission service is supported is included in the received message, wherein, in a case where it is discriminated that the information is included in the message, a transmission source of the message is set as a target for the wireless power transmission by the power transmission unit, and wherein, in a case where it is discriminated that the information is not included in the message, a transmission source of the message is not set as a target for the wireless power transmission by the power transmission unit.
- a power transmission unit configured to perform wireless power transmission to a power receiving apparatus within a predetermined power transmission range, and a communication unit configured to perform communication with respect to the wireless power transmission by the power transmission unit, the method comprising;
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15. A power receiving apparatus, comprising:
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a detection unit configured to detect a predetermined detection signal transmitted from a power transmitting apparatus; a transmission unit configured to transmit a message to the power transmitting apparatus in a case where the predetermined detection signal is detected by the detection unit, wherein the message includes information indicating that a wireless power transmission service is supported; a communication unit configured to perform processing for connecting with the power transmitting apparatus after the message is transmitted by the transmission unit, and communicating a power reception parameter, which relates to a power reception capability, to the power transmitting apparatus in a case where a connection with the power transmitting apparatus is established by the processing; and a power receiving unit configured to receive power wirelessly transmitted by the power transmitting apparatus, wherein the power wirelessly transmitted by the power transmitting apparatus is based on the power reception parameter. - View Dependent Claims (16, 17, 19, 20, 21)
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18. A method of controlling a power receiving apparatus that wirelessly receives power from a power transmitting apparatus, the method comprising:
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detecting a predetermined detection signal transmitted from a power transmitting apparatus; transmitting a message to the power transmitting apparatus in a case where the predetermined detection signal is detected, wherein the message includes information indicating that a wireless power transmission service is supported; performing processing for connecting with the power transmitting apparatus after the message is transmitted, and communicating a power reception parameter, which relates to a power reception capability, to the power transmitting apparatus in a case where a connection with the power transmitting apparatus is established by the processing; and receiving power wirelessly transmitted by the power transmitting apparatus, wherein the power wirelessly transmitted by the power transmitting apparatus is based on the power reception parameter.
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Specification