US 12,244,163 B2
Power supply system for electric vehicle
Je Hyun Kim, Seoul (KR); Sang Wook Park, Hwaseong-Si (KR); Tae Won Lim, Yongin-Si (KR); and Hyun Young Kim, Anyang-Si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Yura Corporation Co., Ltd., Seongnam-Si (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Yura Corporation Co., Ltd., Seongnam-Si (KR)
Filed on Apr. 28, 2023, as Appl. No. 18/140,716.
Claims priority of application No. 10-2022-0148583 (KR), filed on Nov. 9, 2022.
Prior Publication US 2024/0154433 A1, May 9, 2024
Int. Cl. H02J 7/00 (2006.01); B60L 3/00 (2019.01); B60L 53/22 (2019.01); B60L 58/18 (2019.01); H02J 7/34 (2006.01)
CPC H02J 7/0029 (2013.01) [B60L 3/003 (2013.01); B60L 53/22 (2019.02); B60L 58/18 (2019.02); H02J 7/0013 (2013.01); H02J 7/007182 (2020.01); H02J 7/342 (2020.01); B60L 2210/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power supply system for an electric vehicle, the power supply system comprising:
a first low-voltage DC-DC converter (LDC) and a second LDC connected in parallel to a main battery;
a first switch coupled to an output terminal of the first LDC via first wiring;
a junction block for power electric (PE) parts and a junction block for indoor parts connected in series, wherein the junction block for PE parts is coupled to the first switch via a conductive line;
a first auxiliary battery coupled to a first charge/discharge line branched from the conductive line;
a second switch coupled to the first charge/discharge line;
an auxiliary junction block coupled to an output terminal of the second LDC via second wiring;
a second auxiliary battery coupled to a second charge/discharge line branched from the second wiring;
a short-circuit detector configured to detect at least one of: a short circuit associated with the first wiring or a short circuit associated with the first charge/discharge line; and
a controller, based on a detection signal of the short-circuit detector, configured to perform a control operation to selectively turn off the first switch or the second switch or perform a control operation to turn off both the first switch and the second switch.