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.:
Date of Patent:
Apr. 26, 2022
Filed:
May. 13, 2020
Lear Corporation, Southfield, MI (US);
Steven Cong, Novi, MI (US);
David A Hein, Sterling Heights, MI (US);
Ajmal Imran Ansari, Canton, MI (US);
Anthony Armento, Berkley, MI (US);
Arthur Hurlburt, Canton, MI (US);
Ryan Cleveland, Southfield, MI (US);
Matthew Zamieski, Royal Oak, MI (US);
LEAR CORPORATION, Southfield, MI (US);
Abstract
An electric current sensor for detecting a leakage current from an electric vehicle charger. The current sensor includes a magnetic core having a gap formed therein, a first conductor wound around the magnetic core to form a first coil, a second conductor wound around the magnetic core to form a second coil, and a tunnel-magnetoresistance (TMR) sensor element arranged in the gap of the magnetic core. A difference between electric current flow in the first and second conductors produces a magnetic field in the gap of the magnetic core proportional to a leakage current, and the magnetic field produces a voltage in the TMR sensor element indicative of a value of the leakage current.