US 12,294,225 B2
Roadway embeddable capacitive wireless charging systems
Khurram Afridi, Ithaca, NY (US); Sounak Maji, Ithaca, NY (US); Sreyam Sinha, Ithaca, NY (US); and Brandon Regensburger, Ithaca, NY (US)
Assigned to Cornell University, Ithaca, NY (US)
Filed by CORNELL UNIVERSITY, Ithaca, NY (US)
Filed on Feb. 7, 2022, as Appl. No. 17/666,270.
Claims priority of provisional application 63/209,954, filed on Jun. 11, 2021.
Claims priority of provisional application 63/146,615, filed on Feb. 6, 2021.
Prior Publication US 2022/0255348 A1, Aug. 11, 2022
Int. Cl. H02J 50/05 (2016.01); B60L 53/10 (2019.01); B60L 53/30 (2019.01); E01F 11/00 (2006.01); H02J 50/00 (2016.01); H02J 50/40 (2016.01); H03J 3/20 (2006.01)
CPC H02J 50/05 (2016.02) [B60L 53/10 (2019.02); B60L 53/32 (2019.02); E01F 11/00 (2013.01); H02J 50/005 (2020.01); H02J 50/402 (2020.01); H03J 3/20 (2013.01); H02J 2310/48 (2020.01)] 21 Claims
OG exemplary drawing
 
14. A wireless capacitive charging system for use with a vehicle, the system comprising:
a roadway-side capacitive charging pad embedded in a roadway and configured to form a capacitive electrical connection with a vehicle-side capacitive charging pad for wirelessly transferring power to charge a vehicle battery when the vehicle is on the roadway,
a power conditioning circuit positioned next to the roadway and configured to condition power received from a power source, and
a plurality of conductors at least partially embedded in the roadway and electrically connecting the power conditioning circuit and the roadway-side capacitive charging pad, wherein the plurality of conductors form, at least in part, a roadway-side matching network for the capacitive electrical connection,
wherein the roadway-side capacitive charging pad comprises:
a pair of laterally-spaced capacitive plates each electrically connected to one of the pair of conductors,
a conductive sheet arranged below the pair of capacitive plates to electromagnetically shield the pair of capacitive plates from surrounding dissipative materials, and
a first insulation layer that separates the pair of capacitive plates from the conductive sheet.