US 12,257,925 B2
Converter and power conversion system for vehicle auxiliary battery
In Yong Yeo, Bucheon-si (KR); Youn Sik Lee, Suwon-si (KR); and Se Wan Choi, Seoul (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Foundation for Research and Business, Seoul National University of Science and Technology, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Foundation for Research and Business, Seoul National University of Science and Technology, Seoul (KR); Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Nov. 11, 2022, as Appl. No. 18/054,742.
Claims priority of application No. 10-2022-0099367 (KR), filed on Aug. 9, 2022.
Prior Publication US 2024/0051431 A1, Feb. 15, 2024
Int. Cl. B60L 50/60 (2019.01); B60L 53/20 (2019.01); B60L 53/80 (2019.01); B60L 58/22 (2019.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01); H02M 3/156 (2006.01); H02M 1/42 (2007.01)
CPC B60L 58/22 (2019.02) [B60L 50/60 (2019.02); B60L 53/20 (2019.02); B60L 53/80 (2019.02); H02J 7/0016 (2013.01); H02J 7/0063 (2013.01); H02J 7/342 (2020.01); H02M 3/156 (2013.01); B60L 2210/12 (2013.01); H02J 2207/20 (2020.01); H02M 1/4208 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A power conversion system comprising:
a main battery configured to be recharged with power and to supply the recharged power to a motor, thereby supplying rotation force to a wheel of a vehicle;
an auxiliary battery configured to recharge the main battery or to assist a power supply function of the main battery; and
a power converter connected to the auxiliary battery, the power converter comprising a bypass circuit and a buck converter, wherein:
the buck converter comprises a buck switch, and is configured to convert a voltage of the auxiliary battery into a voltage for recharging the main battery in accordance with an ON/OFF switching operation of the buck switch,
the bypass circuit comprises a plurality of bypass circuits, and the buck converter comprises a plurality of buck converters, and
the auxiliary battery comprises a plurality of auxiliary batteries connected to respective bypass circuits and respective buck converters, and a power supply path of each of the auxiliary batteries connected to the main battery is switched by a corresponding one of the bypass circuits and a corresponding one of the buck converters.