公开(公告)号：US20190043276A1

公开(公告)日：2019-02-07

申请号：US15668108

申请日：2017-08-03

Applicant: GM Global Technology Operations LLC

Inventor： Jonathan O. CONELL ,  Robert A. De Stefano

IPC: G07C5/08 ,  F02N11/10 ,  F02N11/08

CPC classification number: G07C5/0808 ,  B62D5/0481 ,  F02N11/0862 ,  F02N11/108 ,  F02N2011/0888 ,  F02P5/145 ,  H02M3/00

Abstract: In an example, a vehicle diagnostic system is disclosed. The vehicle diagnostic system includes a first DC-DC converter having an input and an output and a second DC-DC converter having an input and an output. The output of the first DC-DC converter is connected to the input of the second DC-DC converter at a first node, and the output of the second DC-DC converter is connected to the input of the first DC-DC converter at a second node. The vehicle diagnostic system includes a battery connected to a vehicle load and the first node and a redundant power source connected to the second node. The vehicle diagnostic system includes a control module that is configured to initiate operation of the first DC-DC converter and the second DC-DC converter to cause current re-circulation between the first DC-DC converter and the second DC-DC converter.

公开(公告)号：US20200150182A1

公开(公告)日：2020-05-14

申请号：US16183895

申请日：2018-11-08

Applicant: GM Global Technology Operations LLC

Inventor： Dave G. RICH ,  Jonathan O. CONELL ,  Robert A. DE STEFANO ,  Saad HASAN ,  Benjamin G. WROBLEWSKI ,  Lyall K. WINGER

IPC: G01R31/327 ,  G01R35/00 ,  G01R31/00 ,  B60L11/18

Abstract: A battery control system includes T contactor paths connected in parallel between a battery and a load, where T is an integer greater than one. Each of the T contactor paths includes a first contactor and a second contactor connected in series with the first contactor. Each of the T contactor paths includes at least one of a first voltage sensor configured to sense a first voltage between the first contactor and the second contactor; and a current sensor configured to sense current flowing through the first contactor and the second contactor. A second voltage sensor is configured to sense a second voltage at one end of the T contactor paths. A third voltage sensor is configured to sense a third voltage at an opposite end of the T contactor paths.