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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 11447029 B1

PDFFull Text
Date of Patent:
Sep. 20, 2022

Filed:

May. 07, 2021

Fault detection and monitoring methods for safe operation of a wevc system

Applicant:

Witricity Corporation, Watertown, MA (US);

Inventors:

Joshua Lee, Munich, DE;

Edward van Boheemen, Glen Innes, NZ;

Nicholas Athol Keeling, Benway Lodge, AU;

Assignee:

WiTricity Corporation, Watertown, MA (US);

Attorney:

Colby Nipper PLLC

Primary Examiner:

Robert L Deberadinis

Int. Cl.
CPC ...
B60L 53/65 (2019.01); B60L 53/30 (2019.01); H02J 7/00 (2006.01); B60L 53/124 (2019.01); H02J 50/60 (2016.01); H02J 50/12 (2016.01); H02M 1/42 (2007.01); H02J 50/80 (2016.01); H01M 10/44 (2006.01); H02J 50/40 (2016.01); H02H 3/18 (2006.01); H02J 50/10 (2016.01); B60L 53/12 (2019.01); H02H 7/125 (2006.01); H02H 3/44 (2006.01); H02H 3/20 (2006.01);
U.S. Cl.
CPC ...
B60L 53/65 (2019.02); B60L 53/12 (2019.02); B60L 53/124 (2019.02); B60L 53/32 (2019.02); H01M 10/44 (2013.01); H02H 3/18 (2013.01); H02H 7/125 (2013.01); H02J 7/0029 (2013.01); H02J 7/0047 (2013.01); H02J 50/10 (2016.02); H02J 50/12 (2016.02); H02J 50/40 (2016.02); H02J 50/60 (2016.02); H02J 50/80 (2016.02); H02M 1/42 (2013.01); H02H 3/20 (2013.01); H02H 3/44 (2013.01);
Abstract

A wireless electric vehicle charging system comprises base-side equipment for generating a magnetic field and vehicle-side equipment for receiving energy via the magnetic field to supply power to a vehicle-driving battery. Monitoring circuitry monitors one or more of voltage, current, or phase associated with the base-side equipment and halts generation of the magnetic field in response to a change in the voltage, current, or phase associated with the operation of the base-side equipment that indicates a fault condition at the vehicle-side equipment, which may include a loss of power or disconnection of a battery. Based on detection of the change, the monitoring circuitry can halt generation of the magnetic field to prevent damage at the vehicle-side equipment.

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