US 11,740,289 B2
Relay examination device and battery management system
Byoung Kyu Park, Daejeon (KR); Ho Sang Jang, Daejeon (KR); Seon Yong Kim, Daejeon (KR); and Yong Sug Choi, Daejeon (KR)
Assigned to SK ON CO., LTD., Seoul (KR)
Filed by SK ON Co., Ltd., Seoul (KR)
Filed on May 3, 2022, as Appl. No. 17/735,335.
Application 17/735,335 is a continuation of application No. 16/839,845, filed on Apr. 3, 2020, granted, now 11,340,297.
Claims priority of application No. 10-2019-0041782 (KR), filed on Apr. 10, 2019.
Prior Publication US 2022/0260638 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H02H 7/00 (2006.01); G01R 31/327 (2006.01); H01H 47/00 (2006.01); H02H 7/22 (2006.01); H02H 1/00 (2006.01); H02J 7/00 (2006.01)
CPC G01R 31/3278 (2013.01) [H01H 47/002 (2013.01); H02H 1/0007 (2013.01); H02H 7/22 (2013.01); H02J 7/0013 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A battery management system which examines whether a relay, coupled to an electrode of a battery in which a plurality of battery cells are coupled to each other, is open or closed or whether the relay has malfunctioned, the battery management system comprising:
a relay examination device coupled to the relay,
wherein the relay examination device includes:
a power unit coupled to the relay;
a voltage detection unit configured to detect a voltage from the relay; and
a control unit configured to examine whether the relay is open or closed or whether the relay has malfunctioned based on the voltage.