US 11,884,182 B2
Electric-vehicle battery system including a real time clock
Maximilian Hofer, Yongin-si (KR); Christoph Schmiedhofer, Yongin-si (KR); Thomas Trathnigg, Yongin-si (KR); Kurt Duller, Yongin-si (KR); Renato Mandic, Yongin-si (KR); and Damir Kovac, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Mar. 3, 2021, as Appl. No. 17/190,627.
Claims priority of application No. 20167179 (EP), filed on Mar. 31, 2020; and application No. 10-2020-0131928 (KR), filed on Oct. 13, 2020.
Prior Publication US 2021/0300207 A1, Sep. 30, 2021
Int. Cl. H02J 7/00 (2006.01); B60L 58/16 (2019.01); G04G 19/00 (2006.01)
CPC B60L 58/16 (2019.02) [G04G 19/00 (2013.01); H02J 7/0013 (2013.01); H02J 7/00032 (2020.01)] 14 Claims
OG exemplary drawing
 
1. An electric-vehicle battery system, comprising:
a high voltage system with a plurality of connected rechargeable battery cells;
a low voltage system powered by a low voltage power supply separately from the rechargeable battery cells of the high voltage system with an operating voltage lower than an operating voltage of the high voltage system, the low voltage system supplying a battery system manager;
a battery disconnect unit, including:
a high voltage section including at least one battery disconnect relay; and
a low voltage section including a battery disconnect controller, and
a real time clock, configured to provide a system time to the battery system manager, arranged on the low voltage section of the battery disconnect unit, and at least temporarily powered by the high voltage system.