Wireless power transmission system
First Claim
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1. A wireless power transmission system, comprising:
- a wireless power transmitter having;
a DC power supply having positive and negative terminals;
first and second banks of MOSFET amplifiers, each of the banks having a plurality of MOSFET power transistors configured in parallel, each of the banks having a corresponding drain bus connecting drains of each of the plurality of MOSFET power transistors included in the bank and a corresponding gate bus connecting gates of each of the plurality of MOSFET power the transistors included in the bank;
a transmitting coil and at least one capacitor connected in parallel to the transmitting coil, the transmitting coil and the at least one capacitor defining an LC tank circuit having a transmitter resonant frequency, the LC tank circuit having opposite sides, wherein the opposite sides are connected across the terminals of the DC power supply, the drain buses of the first and second banks of MOSFET amplifiers being connected to opposite sides of the tank circuit, respectively; and
a first diode connected between the gate bus of the first bank of MOSFET amplifiers and the drain bus of the second bank of MOSFET amplifiers, and a second diode connected between the gate bus of the second bank of MOSFET amplifiers and the drain bus of the first bank of MOSFET amplifiers, the first and second diodes being configured to alternately turn the first and second banks of MOSFET amplifiers on and off at the transmitter resonant frequency; and
a wireless power receiver having;
an inductor and a capacitor in parallel with the inductor, the inductor and the capacitor defining a tuned circuit having a receiver resonant frequency, the receiver tuned circuit having a bandwidth at least partially overlapping a bandwidth of the wireless power transmitter'"'"'s LC tank circuit, the tuned circuit receiving power transmitted by the wireless power transmitter'"'"'s transmitting coil;
a rectifier connected to the tuned circuit;
a voltage regulating circuit connected to the rectifier; and
a power connector connected to the voltage regulating circuit for connecting rectified and voltage-regulated power from the wireless receiver to a charging circuit of an electronic device.
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Abstract
The wireless power transmission system includes a wireless transmitter and wireless receiver for transmission of power. The wireless transmitter includes a DC power supply between 6V and 12V, which may be supplied by a lead-acid battery, or other source. A flat coil defines a radiator, and at least one capacitor parallel to the coil defines a tank circuit. Two banks of MOSFET amplifiers are disposed between the power supply and the tank circuit, each bank having parallel MOSFETS for greater current and power. Two diodes alternately switch the banks on and off. The wireless transmitter generates electromagnetic waves to a wireless receiver having a flat coil or loop inductor to receive the transmission of power, the receiver having a half-wave rectifier and a Zener diode to convert the received power to DC and regulate the voltage for charging a user device, such as a cell phone or other electronic device.
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Citations
17 Claims
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1. A wireless power transmission system, comprising:
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a wireless power transmitter having; a DC power supply having positive and negative terminals; first and second banks of MOSFET amplifiers, each of the banks having a plurality of MOSFET power transistors configured in parallel, each of the banks having a corresponding drain bus connecting drains of each of the plurality of MOSFET power transistors included in the bank and a corresponding gate bus connecting gates of each of the plurality of MOSFET power the transistors included in the bank; a transmitting coil and at least one capacitor connected in parallel to the transmitting coil, the transmitting coil and the at least one capacitor defining an LC tank circuit having a transmitter resonant frequency, the LC tank circuit having opposite sides, wherein the opposite sides are connected across the terminals of the DC power supply, the drain buses of the first and second banks of MOSFET amplifiers being connected to opposite sides of the tank circuit, respectively; and a first diode connected between the gate bus of the first bank of MOSFET amplifiers and the drain bus of the second bank of MOSFET amplifiers, and a second diode connected between the gate bus of the second bank of MOSFET amplifiers and the drain bus of the first bank of MOSFET amplifiers, the first and second diodes being configured to alternately turn the first and second banks of MOSFET amplifiers on and off at the transmitter resonant frequency; and a wireless power receiver having; an inductor and a capacitor in parallel with the inductor, the inductor and the capacitor defining a tuned circuit having a receiver resonant frequency, the receiver tuned circuit having a bandwidth at least partially overlapping a bandwidth of the wireless power transmitter'"'"'s LC tank circuit, the tuned circuit receiving power transmitted by the wireless power transmitter'"'"'s transmitting coil; a rectifier connected to the tuned circuit; a voltage regulating circuit connected to the rectifier; and a power connector connected to the voltage regulating circuit for connecting rectified and voltage-regulated power from the wireless receiver to a charging circuit of an electronic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wireless power transmitter for a wireless power transmission system, comprising:
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a DC power supply having positive and negative terminals; first and second banks of MOSFET amplifiers, each of the banks having a plurality of MOSFET power transistors configured in parallel, each of the banks having a corresponding drain bus connecting drains of each of the plurality of MOSFET power transistors included in the bank and a corresponding gate bus connecting gates of each of the plurality of MOSFET power the transistors included in the bank; a transmitting coil and at least one capacitor connected in parallel to the transmitting coil, the transmitting coil and the at least one capacitor defining an LC tank circuit having a transmitter resonant frequency, the LC tank circuit having opposite sides, wherein the opposite sides are connected across the terminals of the DC power supply, the drain buses of the first and second banks of MOSFET amplifiers being connected to opposite sides of the tank circuit, respectively; and a first diode connected between the gate bus of the first bank of MOSFET amplifiers and the drain bus of the second bank of MOSFET amplifiers, and a second diode connected between the gate bus of the second bank of MOSFET amplifiers and the drain bus of the first bank of MOSFET amplifiers, the first and second diodes being configured to alternately turn the first and second banks of MOSFET amplifiers on and off at the transmitter resonant frequency. - View Dependent Claims (17)
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Specification
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Current AssigneeJenan E. S. Sh. M. Al-Shehab
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Original AssigneeJenan E. S. Sh. M. Al-Shehab
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InventorsAl-Shehab, Jenan E. S. SH. M.
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Primary Examiner(s)Tso, Edward
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Assistant Examiner(s)Piggush, Aaron
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Application NumberUS16/154,625Time in Patent Office239 DaysField of Search320108, 320141, 320145, 320158, 320163US Class CurrentCPC Class CodesH02J 50/12 of the resonant typeH02J 7/342 The other DC source being a...
