ELECTRICAL CHARGING SYSTEM THAT INCLUDES VOLTAGE-CONTROLLED OSCILLATOR WHICH OPERATIVELY CONTROLS WIRELESS ELECTROMAGNETIC OR WIRELESS INDUCTIVE CHARGING OF A BATTERY
First Claim
1. An electrical charging system (ECS) to electrically charge at least one energy storage device (ESD), comprising:
- a voltage-controlled oscillator (VCO) electrical circuit;
a first transducer that includes a plurality of coils that at least contain a first coil and a second coil in respective electrical communication with the VCO electrical circuit;
a plurality of second transducers that respectively include at least one of,(i) a third coil, and(ii) a fourth coil,wherein when the VCO electrical circuit operates at a first frequency the first coil wirelessly communicates with the third coil to electrically charge the ESD, and when the VCO electrical circuit operates at a second frequency different from the first frequency the second coil wireles sly communicates with the fourth coil to electrically charge the ESD.
1 Assignment
0 Petitions
Accused Products
Abstract
An electrical charging system (ECS) is used to electrically charge an energy storage device (ESD) using wireless electromagnetic or inductive charging. The ECS includes a voltage-controlled oscillator (VCO) electrical circuit, a first transducer, and a plurality of second transducers. The VCO electrical circuit sequentially excites a plurality of coils in a first transducer to select one of a plurality of second transducers in which to transfer energy when the ESD is electrically charged. ECS power efficiency is measured during the excitation of the plurality of coils and used to determine whether the ECS uses the electromagnetic or inductive approach to electrically charge the ESD. The VCO electrical circuit also assists to maintain an optimum ECS power efficiency during electrical charging of the ESD. A method to electrically charge an ESD associated with a first vehicle and an ESD associated with a second vehicle with the ECS is also presented.
26 Citations
20 Claims
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1. An electrical charging system (ECS) to electrically charge at least one energy storage device (ESD), comprising:
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a voltage-controlled oscillator (VCO) electrical circuit; a first transducer that includes a plurality of coils that at least contain a first coil and a second coil in respective electrical communication with the VCO electrical circuit; a plurality of second transducers that respectively include at least one of, (i) a third coil, and (ii) a fourth coil, wherein when the VCO electrical circuit operates at a first frequency the first coil wirelessly communicates with the third coil to electrically charge the ESD, and when the VCO electrical circuit operates at a second frequency different from the first frequency the second coil wireles sly communicates with the fourth coil to electrically charge the ESD. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method to electrically charge an energy storage device (ESD) of a first vehicle and an ESD of a second vehicle with an electrical charging system (ECS), comprising:
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providing a first transducer of the ECS that includes a first coil and a second coil, the first coil and the second coil being in respective electrical communication with a voltage-controlled oscillator (VCO) electrical circuit of the ECS; providing a plurality of second transducers of the ECS that are respectively disposed on at least the first vehicle and the second vehicle, wherein the second transducer associated with the first vehicle contains a third coil and the second transducer associated with the second vehicle contains a fourth coil; movingly positioning one of the first vehicle and the second vehicle such that one of the third coil is configured to wirelessly communicate energy with the first coil and the fourth coil is configured to wirelessly communicate energy with the second coil; exciting the first coil of the first transducer at a first frequency by the VCO electrical circuit; exciting the second coil of the first transducer at a second frequency different from the first frequency by the VCO electrical circuit; determining, by the ECS, whether the third coil associated with the first vehicle is energized as a result of said excited first coil which is in relation to a first ECS power efficiency measured by the ECS when the first coil is excited in the exciting step; determining, by the ECS, whether the fourth coil associated with the second vehicle is energized as a result of said excited second coil which is in relation to a second ECS power efficiency measured by the ECS when the second coil is excited in the exciting step; comparing, by the ECS, said first ECS power efficiency against said second ECS power efficiency; and electrically charging one of, (i) the ESD of the first vehicle when the first ECS power efficiency is in an acceptable ECS power efficiency range, and (ii) the ESD of the second vehicle when the second ECS power efficiency is in said acceptable ECS power efficiency range. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification