Charging apparatus
First Claim
1. A charging apparatus that transmits electrical power to a charging target device by electromagnetic induction to charge a secondary battery of the charging target device, the charging apparatus comprising:
- a power transmission coil;
a position detection section that detects a position of a power reception coil of the charging target device placed on the charging apparatus; and
a resonant circuit that prevents attenuation of radio waves or a magnetic field generated around the charging apparatus, and wherein;
the position detection section comprises coils disposed separately from the power transmission coil in a plurality of rows;
the resonant circuit attenuates radio waves or a magnetic field of a predetermined frequency in which the charging target device performs communications with external devices other than the charging apparatus; and
the resonant circuit is provided to the coils of the position detection section.
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Accused Products
Abstract
A charging apparatus is provided that avoids a reduction in the strength of radio waves or a magnetic field used by a charging target device having a wireless communication function and reduces an influence on the radio waves or magnetic field. In this apparatus, position detection section (201) detects a position of power reception coil (251) of charging target device (150) placed on charging table (101). Power transmission coil (208) is made close to power reception coil (251) and transmits electric power. Coil moving mechanism (207) brings power transmission coil (208) close to the position of power reception coil (251) that is detected by position detection section (201).
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Citations
12 Claims
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1. A charging apparatus that transmits electrical power to a charging target device by electromagnetic induction to charge a secondary battery of the charging target device, the charging apparatus comprising:
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a power transmission coil; a position detection section that detects a position of a power reception coil of the charging target device placed on the charging apparatus; and a resonant circuit that prevents attenuation of radio waves or a magnetic field generated around the charging apparatus, and wherein; the position detection section comprises coils disposed separately from the power transmission coil in a plurality of rows; the resonant circuit attenuates radio waves or a magnetic field of a predetermined frequency in which the charging target device performs communications with external devices other than the charging apparatus; and the resonant circuit is provided to the coils of the position detection section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification