Wireless power receiving device having a short-circuiting switch, and wireless power transmission device
First Claim
1. A wireless power receiving device that wirelessly receives power, the wireless power receiving device comprising:
- a power receiving unit that includes a power receiving coil;
a rectifier unit that performs full-wave rectification of the power received by the power receiving coil and supplies the power to a load, the rectifier unit including two current paths there-through;
power-receiving-side detecting means that detects an output voltage value or an output current value from the rectifier unit; and
switching means that short-circuits, in the rectifier unit, only one of the two current paths through the rectifier unit if the value detected by the power-receiving-side detecting means exceeds a predetermined reference value.
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Accused Products
Abstract
To provide a wireless power receiving device, and a wireless power transmission device capable of improving the reliability of a protection circuit while preventing breakage of a circuit element upon occurrence of any abnormality, such as overvoltage or overcurrent. A wireless power receiving device includes a power receiving coil; a rectifier unit that performs full-wave rectification of the power received by the power receiving coil and supplies the power to a load; power-receiving-side detecting unit that detects an output voltage value or an output current value from the rectifier unit; and switching unit that short-circuits one of two current paths through the rectifier unit if the value detected by the power-receiving-side detecting unit exceeds a predetermined reference value.
17 Citations
13 Claims
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1. A wireless power receiving device that wirelessly receives power, the wireless power receiving device comprising:
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a power receiving unit that includes a power receiving coil; a rectifier unit that performs full-wave rectification of the power received by the power receiving coil and supplies the power to a load, the rectifier unit including two current paths there-through; power-receiving-side detecting means that detects an output voltage value or an output current value from the rectifier unit; and switching means that short-circuits, in the rectifier unit, only one of the two current paths through the rectifier unit if the value detected by the power-receiving-side detecting means exceeds a predetermined reference value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification