Power reception apparatus, determination method, and program
First Claim
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1. A power reception apparatus comprising:
- a power reception unit configured to receive power wirelessly supplied from a power transmission apparatus;
a voltage conversion unit configured to convert a voltage of the power received by the power reception unit to a voltage with a particular value;
a first detection unit configured to detect a change in voltage or current input to the voltage conversion unit;
a second detection unit configured to detect a change in consumption power of a load unit that operates with power output from the voltage conversion unit; and
a determination unit configured to make a determination, based on a relationship between the change in voltage or current detected by the first detection unit and the change in consumption power detected by the second detection unit, as to whether an object, which is not a target object to which power is to be transmitted, exists in a power transmission area covered by the power transmission apparatus.
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Abstract
A power reception apparatus includes a power reception unit configured to receive power wirelessly supplied from a power transmission apparatus, a voltage conversion unit configured to convert the voltage of the power receive by the power reception unit to a voltage with a particular value, a load unit configured to operate with an output from the voltage conversion unit, a first detection unit configured to detect a voltage or a current input to the voltage conversion unit, and a second detection unit configured to detect consumption power of the load unit, a determination unit configured to make a determination, based on a result of a detection performed by the first detection unit and a result of a detection performed by the second detection unit, as to whether there exists a foreign object, which is not a target object to which power is to be transmitted, in a power transmission service area covered by the power transmission apparatus.
5 Citations
18 Claims
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1. A power reception apparatus comprising:
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a power reception unit configured to receive power wirelessly supplied from a power transmission apparatus; a voltage conversion unit configured to convert a voltage of the power received by the power reception unit to a voltage with a particular value; a first detection unit configured to detect a change in voltage or current input to the voltage conversion unit; a second detection unit configured to detect a change in consumption power of a load unit that operates with power output from the voltage conversion unit; and a determination unit configured to make a determination, based on a relationship between the change in voltage or current detected by the first detection unit and the change in consumption power detected by the second detection unit, as to whether an object, which is not a target object to which power is to be transmitted, exists in a power transmission area covered by the power transmission apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A determination method comprising:
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performing a first detection process to detect a change in voltage or current input to a voltage conversion unit included in a power reception apparatus and configured to convert a voltage of power wirelessly supplied from a power transmission apparatus and received by the power reception apparatus to a voltage with a particular value; performing a second detection process to detect consumption power of a load unit that operates with power output from the voltage conversion unit; and making a determination, based on a relationship between the change in voltage or current detected in the first detection process and the change in consumption power detected in the second detection process, as to whether an object, which is not a target object to which power is to be transmitted, exists in a power transmission area covered by the power transmission apparatus.
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18. A storage medium storing a program for causing a computer to execute a determination method, the method comprising:
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performing a first detection process to detect a change in voltage or current input to a voltage conversion unit included in a power reception apparatus and configured to convert a voltage of power wirelessly supplied from a power transmission apparatus and received by the power reception apparatus to a voltage with a particular value; performing a second detection process to detect consumption power of a load unit that operates with power output from the voltage conversion unit; and making a determination, based on a relationship between the change in voltage or current detected in the first detection process and the change in consumption power detected in the second detection process, as to whether an object, which is not a target object to which power is to be transmitted, exists in a power transmission area covered by the power transmission apparatus.
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Specification
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Current AssigneeCanon Kabushiki Kaisha (Canon Inc.)
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Original AssigneeCanon Kabushiki Kaisha (Canon Inc.)
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InventorsTakahashi, Naoto
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Primary Examiner(s)Fureman, Jared
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Assistant Examiner(s)Pham, Duc M
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Application NumberUS15/215,436Publication NumberTime in Patent Office972 DaysField of SearchUS Class CurrentCPC Class CodesH02J 50/10 using inductive couplingH02J 50/12 of the resonant typeH02J 50/20 using microwaves or radio f...H02J 50/30 using light, e.g. lasersH02J 50/60 responsive to the presence ...H02J 7/00045 Authentication, i.e. circui...
