公开(公告)号：US20220219542A1

公开(公告)日：2022-07-14

申请号：US17147608

申请日：2021-01-13

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Baojin WANG ,  Chingchi CHEN ,  Benjamin A. TABATOWSKI-BUSH ,  Aaron WALKER ,  Rui WANG ,  Xianzhi GONG ,  Xu WANG ,  John Paul GIBEAU

IPC: B60L3/00 ,  G01R31/00 ,  G01R31/327

Abstract: A power system includes a battery and a controller. The controller inhibits charge of the battery according to voltage or current values sensed before and after contactors electrically connected to the battery are commanded to open and indicating that a leakage resistance associated with one of the contactors increases after the one of contactors is commanded to open, and a duration of a continuous voltage drop across another of the contactors after the another of the contactors is commanded to open exceeds a threshold.

公开(公告)号：US20220332304A1

公开(公告)日：2022-10-20

申请号：US17232892

申请日：2021-04-16

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Aaron WALKER ,  Mateusz ZADROZNY

IPC: B60W20/13

Abstract: A vehicle includes a traction battery, an electric machine, a relay electrically between the traction battery and electric machine, and a controller. When closed, the relay completes an electrical circuit including the traction battery and electric machine. The controller selectively commands the relay to open based on a voltage across a coil of the relay and a current through the coil.