Method and system for wireless power delivery
First Claim
Patent Images
1. A method for wireless power transmission, comprising:
- determining a receiver group comprising a first receiver and a second receiver;
in response to determining the receiver group, determining a plurality of transmission parameter sets based on;
a first objective function associated with the first receiver; and
a second objective function associated with the second receiver;
wherein determining the plurality of transmission parameter sets comprises, for each transmission parameter set of the plurality;
evaluating the first and second objective functions based on the respective transmission parameter set;
determining a charging plan based on the evaluations of the first and second objective functions, the charging plan comprising;
a first transmission parameter set of the plurality;
a first duty cycle associated with the first transmission parameter set;
a second transmission parameter set; and
a second duty cycle associated with the second transmission parameter set; and
at a transmitter, wirelessly transmitting power to the first and second receivers based on the charging plan;
wherein evaluating the first and second objective functions based on the respective transmission parameter set comprises;
at the transmitter, throughout a respective time interval, transmitting power based on the respective transmission parameter set;
at the first receiver, during the respective time interval, receiving power transmitted by the transmitter;
determining a respective first amount of power received at the first receiver during the respective time interval;
evaluating the first objective function based on the respective first amount of power;
at the second receiver, during the respective time interval, receiving power transmitted by the transmitter;
determining a respective second amount of power received at the second receiver during the respective time interval; and
evaluating the second objective function based on the respective second amount of power.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for wireless power delivery, preferably including: determining transmitter-receiver proximity, assessing transmission parameters, and/or transmitting power based on a transmission plan. A system for wireless power delivery, preferably including a plurality of receivers and one or more transmitters.
72 Citations
21 Claims
-
1. A method for wireless power transmission, comprising:
-
determining a receiver group comprising a first receiver and a second receiver; in response to determining the receiver group, determining a plurality of transmission parameter sets based on; a first objective function associated with the first receiver; and a second objective function associated with the second receiver; wherein determining the plurality of transmission parameter sets comprises, for each transmission parameter set of the plurality;
evaluating the first and second objective functions based on the respective transmission parameter set;determining a charging plan based on the evaluations of the first and second objective functions, the charging plan comprising; a first transmission parameter set of the plurality; a first duty cycle associated with the first transmission parameter set; a second transmission parameter set; and a second duty cycle associated with the second transmission parameter set; and at a transmitter, wirelessly transmitting power to the first and second receivers based on the charging plan; wherein evaluating the first and second objective functions based on the respective transmission parameter set comprises; at the transmitter, throughout a respective time interval, transmitting power based on the respective transmission parameter set; at the first receiver, during the respective time interval, receiving power transmitted by the transmitter; determining a respective first amount of power received at the first receiver during the respective time interval; evaluating the first objective function based on the respective first amount of power; at the second receiver, during the respective time interval, receiving power transmitted by the transmitter; determining a respective second amount of power received at the second receiver during the respective time interval; and evaluating the second objective function based on the respective second amount of power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
wherein a duration ratio of a first time interval duration to a second time interval duration is substantially equal to a duty cycle ratio of the first duty cycle to the second duty cycle.
-
-
3. The method of claim 1, wherein the plurality of transmission parameter sets comprises the second transmission parameter set.
-
4. The method of claim 1, further comprising:
-
determining a second receiver group comprising a third receiver; and in response to determining the second receiver group, determining a second plurality of transmission parameter sets based on a third objective function associated with the third receiver; wherein; the second plurality of transmission parameter sets comprises the second transmission parameter set; and the charging plan is determined based further on the evaluations of the third objective function.
-
-
5. The method of claim 4, wherein:
-
the second receiver group further comprises a fourth receiver; second plurality of transmission parameter sets is determined based further on a fourth objective function associated with the fourth receiver; and the charging plan is determined based further on the evaluations of the third and fourth objective functions.
-
-
6. The method of claim 4, wherein the second receiver group further comprises the second receiver.
-
7. The method of claim 1, further comprising:
-
determining a first delivered energy target quantity associated with the first receiver; and determining a second delivered energy target quantity associated with the second receiver; wherein the charging plan is determined based further on the first and second delivered energy target quantities.
-
-
8. The method of claim 7, wherein determining the charging plan comprises using a discrete optimization algorithm to minimize an expected power transmission time required to meet the first and second delivered energy target quantities.
-
9. The method of claim 1, wherein the plurality of transmission parameter sets defines a Pareto non-dominated set for the first and second objective functions.
-
10. The method of claim 9, wherein determining the plurality of transmission parameter sets further comprises performing a search based on the first and second objective functions and a Pareto simulated annealing algorithm.
-
11. The method of claim 10, wherein the search is performed based further on a multi-objective particle swarm optimization algorithm.
-
12. The method of claim 1, wherein:
-
the transmitter comprises a plurality of transmission elements; and a transmission parameter space associated with the plurality of transmission parameter sets comprises, for each transmission element of the plurality, at least one of;
a respective phase parameter and a respective amplitude parameter.
-
-
13. A method for wireless power transmission, comprising:
-
determining a first receiver group comprising a first receiver and a second receiver; determining a second receiver group comprising a third receiver; in response to determining the first receiver group, determining a first plurality of transmission parameter sets based on; a first objective function associated with the first receiver; and a second objective function associated with the second receiver; wherein determining the first plurality of transmission parameter sets comprises, for each transmission parameter set of the first plurality;
evaluating the first and second objective functions based on the respective transmission parameter set;in response to determining the second receiver group, determining a second plurality of transmission parameter sets based on a third objective function associated with the third receiver;
wherein determining the third plurality of transmission parameter sets comprises, for each transmission parameter set of the second plurality;
evaluating the third objective function based on the respective transmission parameter set;determining a charging plan based on the evaluations of the first, second, and third objective functions, the charging plan comprising; a first transmission parameter set of the first plurality; a first duty cycle associated with the first transmission parameter set; a second transmission parameter set of the second plurality; and a second duty cycle associated with the second transmission parameter set; and at a transmitter, wirelessly transmitting power to the first and second receivers based on the charging plan. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
-
21. A system for wireless power transmission, comprising a transmitter comprising a plurality of transmission elements, the transmitter configured to:
-
determine a receiver group comprising a first receiver and a second receiver; in response to determining the receiver group, determine a plurality of transmission parameter sets based on; a first objective function associated with the first receiver; and a second objective function associated with the second receiver; wherein determining the plurality of transmission parameter sets comprises, for each transmission parameter set of the plurality;
evaluating the first and second objective functions based on the respective transmission parameter set;determine a charging plan based on the evaluations of the first and second objective functions, the charging plan comprising; a first transmission parameter set of the plurality; a first duty cycle associated with the first transmission parameter set; a second transmission parameter set; and a second duty cycle associated with the second transmission parameter set; and control the plurality of transmission elements to transmit based on the charging plan; wherein evaluating the first and second objective functions based on the respective transmission parameter set comprises; at the transmitter, throughout a respective time interval, controlling the plurality of transmission elements to transmit power based on the respective transmission parameter set; at the first receiver, during the respective time interval, receiving power transmitted by the transmitter; determining a respective first amount of power received at the first receiver during the respective time interval; evaluating the first objective function based on the respective first amount of power; at the second receiver, during the respective time interval, receiving power transmitted by the transmitter; determining a respective second amount of power received at the second receiver during the respective time interval; and evaluating the second objective function based on the respective second amount of power.
-
Specification