公开(公告)号：US10483772B2

公开(公告)日：2019-11-19

申请号：US15801851

申请日：2017-11-02

Applicant: LEAR CORPORATION

Inventor： Steven Cong ,  David A. Hein ,  Ryan Cleveland ,  Eric Salem

IPC: H02J7/00 ,  B60L53/20 ,  B60L53/12 ,  B60L53/66

Abstract: A wireless charger output protection system and method is provided for protecting a battery in an electric vehicle during wireless charging from both a desired power source and a stray power source. A wireless power transfer system includes a wireless charger on the electric vehicle side that receives power wirelessly from a charging base. The wireless charger output protection system and method shuts down the wireless charger output and dumps energy in a receive antenna (e.g., a vehicle pad) when a low-voltage battery connected to the wireless charger is lost. The wireless charger output protection system and method also shuts down the wireless charger output and dumps unwanted energy in the receive antenna (e.g., a vehicle pad) when power is transferred from a stray power source coupled to the receive antenna.

公开(公告)号：US10333335B2

公开(公告)日：2019-06-25

申请号：US15795825

申请日：2017-10-27

Applicant: LEAR CORPORATION

Inventor： Steven Cong ,  David A. Hein ,  Ryan Cleveland ,  Eric Salem

IPC: H02J7/00 ,  H02J7/02 ,  B60L11/18

Abstract: A wireless charger output protection system and method is provided for protecting a battery in an electric vehicle during wireless charging. A wireless power transfer system includes a wireless charger on the electric vehicle side that receives power wirelessly from a charging base. The wireless charger output protection system and method shuts down the wireless charger output and dumps energy in a receive antenna (e.g., a vehicle pad) when a charging error is detected before the charging base can be shut down. The system and method employs a zero-voltage switching (ZVS) scheme to shut down the wireless charger output, in response to the charging error, to protect the switching devices and enhance overall reliability.

公开(公告)号：US11313917B2

公开(公告)日：2022-04-26

申请号：US15929620

申请日：2020-05-13

Applicant: Lear Corporation

Inventor： Steven Cong ,  David A Hein ,  Ajmal Imran Ansari ,  Anthony Armento ,  Arthur Hurlburt ,  Ryan Cleveland ,  Matthew Zamieski

IPC: G01R31/52 ,  G01R15/20 ,  G01R19/00

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.

公开(公告)号：US10594157B2

公开(公告)日：2020-03-17

申请号：US16431800

申请日：2019-06-05

Applicant: LEAR CORPORATION

Inventor： Steven Cong ,  David A Hein ,  Ryan Cleveland ,  Eric Salem

IPC: H02J7/02 ,  B60L53/12 ,  H02J50/12

Abstract: A wireless charger output protection system and method is provided for protecting a battery in an electric vehicle during wireless charging. A wireless power transfer system includes a wireless charger on the electric vehicle side that receives power wirelessly from a charging base. The wireless charger output protection system and method shuts down the wireless charger output and dumps energy in a receive antenna (e.g., a vehicle pad) when a charging error is detected before the charging base can be shut down. The system and method employs a zero-voltage switching (ZVS) scheme to shut down the wireless charger output, in response to the charging error, to protect the switching devices and enhance overall reliability.