Power supply system
First Claim
1. A power transmission apparatus comprising:
- a primary side coil; and
a primary side circuit for feeding to the primary side coil a pulse voltage resulting from switching a DC voltage obtained by rectifying and smoothing commercial power and for supplying power in DC voltage to power reception equipment through the primary side coil,wherein the power transmission apparatus is configured to receive an information signal containing information regarding the power reception equipment from the power reception equipment through a secondary side coil separated from and magnetically connected to the primary side coil and through the primary side coil, andwherein the power transmission apparatus further comprises a power adjusting section configured to adjust, upon receiving the information signal, a level of power to be transmitted to the power reception equipment.
1 Assignment
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Accused Products
Abstract
A power supply system is provided, having: 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 transmission apparatus comprising:
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a primary side coil; and a primary side circuit for feeding to the primary side coil a pulse voltage resulting from switching a DC voltage obtained by rectifying and smoothing commercial power and for supplying power in DC voltage to power reception equipment through the primary side coil, wherein the power transmission apparatus is configured to receive an information signal containing information regarding the power reception equipment from the power reception equipment through a secondary side coil separated from and magnetically connected to the primary side coil and through the primary side coil, and wherein the power transmission apparatus further comprises a power adjusting section configured to adjust, upon receiving the information signal, a level of power to be transmitted to the power reception equipment. - View Dependent Claims (2, 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)
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47. A power supply system comprising
a power transmission apparatus comprising: -
a primary side coil; and a primary side circuit for feeding to the primary side coil a pulse voltage resulting from a switching a DC voltage obtained by rectifying and smoothing commercial power and for supplying power in DC voltage to power reception equipment through the primary side coil, wherein the power transmission apparatus is configured to receive an information signal containing information regarding the power reception equipment from the power reception equipment through a secondary side coil separated from and magnetically connected to the primary side coil and through the primary side coil, and wherein the power transmission apparatus further comprises a power adjusting section configured to adjust upon receiving the information signal, a level of power to be transmitted to the power reception equipment, said power supply system further comprising power reception equipment for receiving power from the powertransmission apparatus, wherein the power transmission apparatus includes a signal transmission control circuit for transmitting an information signal among the power transmission apparatus, the power reception equipment and an external apparatus connected to the power transmission apparatus. - View Dependent Claims (48, 49, 50, 51, 52, 53)
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54. A power transmission apparatus for receiving commercial power and supplying power in DC voltage in a non-contact manner to power reception equipment that is separate and independent from the power transmission apparatus,
wherein the power transmission apparatus is configured to transmit power to the power reception equipment through magnetically coupled elements that are separate and independent from each other and are respectively provided in the power transmission apparatus and the power reception equipment, wherein the power reception equipment is configured to transmit an information signal including information regarding the power reception equipment to the power transmission apparatus through the magnetically coupled elements, and wherein the power transmission apparatus comprises a power adjusting section for adjusting a level of power to be transmitted upon receiving the information signal.
Specification