Power supply system
First Claim
1. A power supply system comprising:
- a power transmitting unit operable to transmit electric power; and
a power receiving unit operable to receive the electric power transmitted from the power transmitting unit, and to supply the electric power to a receiving side load,wherein the electric power transmitted from the power transmitting unit is received in a noncontact manner and supplied to the receiving side load coupled to the power receiving unit,wherein the power receiving unit generates a repeat of burst signals notifying that the electric power is short or surplus when the electric power of the receiving side load becomes short or surplus, andwherein the power transmitting unit controls the increase and decrease of the electric power to be transmitted to the power receiving unit, based on a length of intervals between the burst signals generated by the power receiving unit.
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Accused Products
Abstract
In a power supply system, reducing influence of a noise etc., optimal electric power is supplied corresponding to power consumption of a receiving side load, and power consumption is decreased greatly. When a potential difference detector 12 detects that a power supply voltage of the receiving side load is decreased lower than a lower limit voltage threshold or increased higher than an upper limit voltage threshold, a burst interval setting unit sets up a burst signal of a pulse width corresponding to the detection result. A burst signal generator generates a burst signal based on the setup, and excites a control primary inductor. A burst signal detector generates a pulse signal in response to electromotive force of a control secondary inductor. A pulse width controller determines increase or decrease of the voltage value of the receiving side load from a no-signal period of a pulse signal, measured by a no-signal period measuring unit, and modifies and outputs a signal outputted by a alternating current generator so as to change a period or the number of times to excite a power primary inductor.
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Citations
5 Claims
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1. A power supply system comprising:
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a power transmitting unit operable to transmit electric power; and a power receiving unit operable to receive the electric power transmitted from the power transmitting unit, and to supply the electric power to a receiving side load, wherein the electric power transmitted from the power transmitting unit is received in a noncontact manner and supplied to the receiving side load coupled to the power receiving unit, wherein the power receiving unit generates a repeat of burst signals notifying that the electric power is short or surplus when the electric power of the receiving side load becomes short or surplus, and wherein the power transmitting unit controls the increase and decrease of the electric power to be transmitted to the power receiving unit, based on a length of intervals between the burst signals generated by the power receiving unit. - View Dependent Claims (2, 3, 4, 5)
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Specification