公开(公告)号：US20240317060A1

公开(公告)日：2024-09-26

申请号：US18580523

申请日：2022-07-13

申请人： Vitesco Technologies GmbH

发明人： Robert Hoffmann

IPC分类号： B60L3/00 ,  B60L3/12 ,  B60L53/14 ,  G01R31/00 ,  G01R31/327 ,  H01H47/00

CPC分类号： B60L3/0046 ,  B60L3/12 ,  B60L53/14 ,  G01R31/006 ,  G01R31/3275 ,  H01H47/002

摘要： Various embodiments include methods for identifying a malfunction of a DC voltage charging connection in an electric vehicle. An example includes: driving two contactors into an open or closed state without applying a charging voltage; applying an internal reference DC voltage of the electric vehicle between both contactors, including applying a positive pole of the reference DC voltage at the first contactor and a negative pole at the second; measuring a first voltage potential between the contactors on a respective output side; measuring a second voltage potential between the contactors on a respective input side of the contactors; and identifying a malfunction of the two contactors based at least in part on the first voltage potential and the second voltage potential.