US 12,273,040 B2
Generating and supplying bias power to isolated power converters
Mohamed Kamel, Rochester, MI (US); Chandra S. Namuduri, Troy, MI (US); and Muhammad Hussain Alvi, Troy, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Feb. 9, 2023, as Appl. No. 18/166,599.
Prior Publication US 2024/0275292 A1, Aug. 15, 2024
Int. Cl. H02M 3/335 (2006.01); B60L 50/64 (2019.01); B60L 53/22 (2019.01); H02J 7/00 (2006.01); H02M 1/00 (2007.01)
CPC H02M 3/33573 (2021.05) [B60L 50/64 (2019.02); B60L 53/22 (2019.02); H02J 7/0013 (2013.01); H02M 1/0067 (2021.05); H02J 2207/20 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A power supply system for a vehicle, the power supply system comprising:
a high-voltage battery pack having a plurality of batteries;
a primary isolated converter connected to the high-voltage battery pack; and
a plurality of distributed isolated converters, each of the plurality of distributed isolated converters being connected to one of the plurality of batteries,
wherein each of the distributed isolated converters includes a primary stage configured to receive power from one of the plurality of batteries and an isolated stage configured to provide power to a low-voltage bus, and
wherein bias signals configured to control operation of each of the plurality of distributed isolated converters are powered by the connected one of the plurality of batteries and activated based on an enable signal provided by the primary isolated converter.