Resonance type non-contact charging apparatus that matches the input impedance of the resonance system with the output impedance of the AC power source
First Claim
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1. A resonance type non-contact power transmission apparatus comprising:
- primary side equipment including;
an AC power source;
a primary side resonance coil for receiving power from the AC power source; and
a reflected power detecting section for detecting a reflected power from the primary side resonance coil to the AC power source; and
secondary side equipment including;
a secondary side resonance coil for receiving power via magnetic resonance from the primary side resonance coil;
a power converting section that has a DC/DC converter and inputs power from the secondary side resonance coil;
a load connected to the power converting section; and
a controlling section for controlling the DC/DC converter,wherein the controlling section controls a duty cycle of the DC/DC converter based on a detection result of the reflected power detecting section to decrease the reflected power from the primary side resonance coil to the AC power source.
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Abstract
A resonance type non-contact charging system is disclosed that includes a resonance system. The resonance system has a primary side resonance coil, a secondary side resonance coil, a reflected power detecting section, a power converting section having a DC/DC converter, and a battery. The charging system has a controlling section that controls the DC/DC converter. The controlling section controls the duty cycle of the DC/DC converter based on detection result of the reflected power detecting section such that the input impedance of the resonance system at the resonant frequency and the output impedance of a high-frequency power source match each other.
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Citations
7 Claims
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1. A resonance type non-contact power transmission apparatus comprising:
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primary side equipment including; an AC power source; a primary side resonance coil for receiving power from the AC power source; and a reflected power detecting section for detecting a reflected power from the primary side resonance coil to the AC power source; and secondary side equipment including; a secondary side resonance coil for receiving power via magnetic resonance from the primary side resonance coil; a power converting section that has a DC/DC converter and inputs power from the secondary side resonance coil; a load connected to the power converting section; and a controlling section for controlling the DC/DC converter, wherein the controlling section controls a duty cycle of the DC/DC converter based on a detection result of the reflected power detecting section to decrease the reflected power from the primary side resonance coil to the AC power source. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification