US 12,325,327 B2
Energy transfer among mismatched battery systems
Mohamed Ahmed Kamel Ahmed, Birmingham, MI (US); Lei Hao, Troy, MI (US); and Chandra S. Namuduri, 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 May 2, 2023, as Appl. No. 18/310,768.
Prior Publication US 2024/0367549 A1, Nov. 7, 2024
Int. Cl. B60L 58/22 (2019.01); B60L 53/62 (2019.01); H02J 7/34 (2006.01)
CPC B60L 58/22 (2019.02) [B60L 53/62 (2019.02); H02J 7/342 (2020.01); B60L 2210/10 (2013.01); H02J 2207/20 (2020.01)] 20 Claims
OG exemplary drawing
 
1. An energy transfer system comprising:
a conversion device configured to be electrically connected to a first battery system of a first vehicle, the conversion device configured for partial power processing and configured to regulate current from the first battery system; and
a controller configured to control the conversion device to adjust a first voltage of the first battery system to conform the first voltage to a second voltage of a second battery system, the second battery system connected in parallel with the first battery system by a bus, the conversion device configured to:
receive power from the first battery system;
cause a selected portion of the power to flow through a conversion stage to adjust the first voltage, the selected portion corresponding to a difference between the first voltage and the second voltage;
cause a remaining portion of the power to flow directly to the bus and bypass the conversion stage; and
output a current from the conversion device at the second voltage.