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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10566839 B1

PDFFull Text
Date of Patent:
Feb. 18, 2020

Filed:

Mar. 14, 2016

Systems, methods and apparatus for guidance and alignment between electric vehicles and wireless charging systems

Applicant:

Witricity Corporation, Watertown, MA (US);

Inventors:

Hans Peter Widmer, Wohlenschwil, CH;

Lukas Sieber, Olten, CH;

Andreas Daetwyler, Unterentfelden, CH;

Assignee:

WiTricinity Corporation, Watertown, MA (US);

Attorney:

Knobbe, Martens, Olson & Bear, LLP

Primary Examiner:

Thienvu V Tran

Assistant Examiner:

Brian K Baxter

Int. Cl.
CPC ...
H02J 50/12 (2016.01); H02J 50/90 (2016.01); G01R 33/02 (2006.01); B60L 53/12 (2019.01); B60L 53/38 (2019.01); B60L 53/36 (2019.01); H02J 50/60 (2016.01); H02J 7/02 (2016.01); G08G 1/042 (2006.01); H01F 38/14 (2006.01);
U.S. Cl.
CPC ...
H02J 50/12 (2016.02); B60L 53/12 (2019.02); B60L 53/36 (2019.02); B60L 53/38 (2019.02); G01R 33/0206 (2013.01); H02J 7/025 (2013.01); H02J 50/60 (2016.02); H02J 50/90 (2016.02); G08G 1/042 (2013.01); H01F 38/14 (2013.01); H01F 2038/143 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7072 (2013.01); Y02T 90/12 (2013.01); Y02T 90/121 (2013.01); Y02T 90/122 (2013.01); Y02T 90/125 (2013.01); Y02T 90/14 (2013.01);
Abstract

An apparatus for determining a relative position of a wireless power transmitter from a wireless power receiver is provided. The apparatus comprises a driver circuit configured to generate a first signal and a second signal. At least one of the first signal and the second signal oscillates at two frequencies. The apparatus comprises a first generator coil configured to generate a first alternating magnetic field when driven by the first signal. The first generator coil is also configurable to wirelessly transfer charging power from the wireless power transmitter. The apparatus comprises a second generator coil configured to generate a second alternating magnetic field when driven by the second signal.

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