US 12,456,924 B2
Driving control device of relay for battery pack
Kyo Sung Koo, Yongin-si (KR); Duck Hyun Kim, Yongin-si (KR); Kwang Min Yoo, Yongin-si (KR); and Gi Ho Seo, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Sep. 28, 2023, as Appl. No. 18/477,401.
Claims priority of application No. 10-2023-0002755 (KR), filed on Jan. 9, 2023.
Prior Publication US 2024/0235398 A1, Jul. 11, 2024
Int. Cl. H02M 3/158 (2006.01); H02J 7/00 (2006.01); H02J 7/04 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/1582 (2013.01) [H02J 7/007182 (2020.01); H02J 7/04 (2013.01); H02M 1/0025 (2021.05)] 11 Claims
OG exemplary drawing
 
1. A driving control device for a relay for a battery pack, comprising:
a buck-boost converter configured to receive a voltage from an auxiliary battery, and output a buck-boost voltage;
a feedback control circuit electrically connected to the buck-boost converter, and configured to transfer a feedback voltage to the buck-boost converter to control the buck-boost voltage output from the buck-boost converter; and
a relay control circuit configured to apply or block the buck-boost voltage to a relay electrically connected to at least one of a positive electrode terminal or a negative electrode terminal of a main battery,
wherein the buck-boost converter is configured to output the buck-boost voltage according to the feedback voltage, and
wherein the buck-boost voltage has a smaller sustaining voltage for maintaining the relay in an on state than a first reference voltage for turning on the relay.