Power supply system
First Claim
1. A power supply system for supplying power, in a non-contact manner, to power reception equipment from a power transmission apparatus to which a commercial power supply is supplied, wherein there is provided a power adjusting section for adjusting a level of power to be transmitted according to power required by the power reception equipment.
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Accused Products
Abstract
A power supply system according to the present invention comprises: a primary side coil; a power transmission apparatus having a primary side circuit for feeding a pulse voltage resulted from switching a DC voltage which is obtained by rectifying and smoothing a commercial power supply to the primary side coil; a secondary side coil magnetically coupled to the primary side coil; and power reception equipment having a secondary side circuit for rectifying and smoothing voltage induced across the secondary side coil, wherein there is provided a power adjusting section for adjusting a level of power to be transmitted according to power required by the power reception equipment. The power adjusting section has, in the primary side circuit, a carrier wave oscillation circuit for supplying a carrier wave to the primary side coil, a demodulation circuit for demodulating a modulated signal transmitted from the secondary circuit and received by the primary side coil, and a power change-over section for selecting a level of power to be transmitted according to an information signal from the power reception equipment and demodulated by the demodulation circuit. The power adjusting section has, in the secondary side circuit, a modulation circuit for modulating the carrier wave fed from the carrier wave oscillation circuit and received by the secondary side coil with the information signal from the power reception equipment and transmitting the modulated signal.
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Citations
54 Claims
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1. A power supply system for supplying power, in a non-contact manner, to power reception equipment from a power transmission apparatus to which a commercial power supply is supplied,
wherein there is provided a power adjusting section for adjusting a level of power to be transmitted according to power required by the power reception equipment.
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2. A power supply system comprising:
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a primary side coil;
a power transmission apparatus having a primary side circuit for feeding a pulse voltage to the primary side coil, the pulse voltage resulted from switching a DC voltage that is obtained by rectifying and smoothing a commercial power supply;
a secondary side coil magnetically coupled to the primary side coil; and
power reception equipment having a secondary side circuit for rectifying and smoothing an induced voltage induced across the secondary side coil, wherein there is provided a power adjusting section for adjusting a level of power to be transmitted according to power required by the power reception equipment. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification