US 12,483,067 B2
Wireless power transfer
Li Jun Yu, Auckland (NZ); Hao Hao, Auckland (NZ); and Anton Van Vugt, Auckland (NZ)
Assigned to INTDEVICE LIMITED, Auckland (NZ)
Appl. No. 18/251,710
Filed by Intdevice Limited, Auckland (NZ)
PCT Filed Nov. 4, 2021, PCT No. PCT/IB2021/060191
§ 371(c)(1), (2) Date May 3, 2023,
PCT Pub. No. WO2022/097050, PCT Pub. Date May 12, 2022.
Claims priority of application No. 769644 (NZ), filed on Nov. 4, 2020; and application No. 771520 (NZ), filed on Dec. 23, 2020.
Prior Publication US 2023/0420991 A1, Dec. 28, 2023
Int. Cl. H02J 50/00 (2016.01); H02J 50/12 (2016.01); H02J 7/02 (2016.01)
CPC H02J 50/12 (2016.02) [H02J 50/005 (2020.01); H02J 7/02 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An inductive power transfer receiver for receiving power to provide to a load, the inductive power transfer receiver comprising:
a receiving coil,
a tuned circuit comprising the receiving coil, and
a transformer sub-circuit connected to the tuned circuit, the transformer sub-circuit comprising a transformer primary side and a transformer secondary side,
wherein in use, when the inductive power transfer receiver provides received power to the load:
the transformer sub-circuit connects the receiving coil to the load, and
the transformer sub-circuit achieves one or more of:
reducing current in the receiving coil,
improving power factor, and
improving stability in the tuned circuit;
wherein the transformer sub-circuit comprises one transformer, comprising a transformer primary coil and a secondary coil; and
wherein the transformer sub-circuit comprises at least one additional transformer, each of the at least one additional transformer comprising a transformer primary coil and a transformer secondary coil.