US 12,246,606 B2
Multi-function DC-DC converter for battery electric vehicles
Lei Hao, Troy, MI (US); Chandra S. Namuduri, Troy, MI (US); Chengwu Duan, Shanghai (CN); Suresh Gopalakrishnan, Troy, MI (US); Neeraj S. Shidore, Novi, MI (US); and Venkata Prasad Atluri, Novi, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Dec. 14, 2021, as Appl. No. 17/550,004.
Claims priority of application No. 202111338996.3 (CN), filed on Nov. 12, 2021.
Prior Publication US 2023/0150378 A1, May 18, 2023
Int. Cl. B60L 53/20 (2019.01); B60L 53/16 (2019.01); H02J 7/00 (2006.01); H02M 3/158 (2006.01)
CPC B60L 53/20 (2019.02) [B60L 53/16 (2019.02); H02J 7/0013 (2013.01); H02J 7/0042 (2013.01); H02M 3/158 (2013.01); B60L 2210/10 (2013.01); H02J 2207/20 (2020.01); H02J 2207/40 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A power control system for a vehicle, comprising:
a charge port;
a contactor connected to the charge port and including a first plurality of switches;
an energy storage system including a second plurality of switches and one or more battery packs;
a bi-directional DC-DC converter connected between the energy storage system and a plurality of vehicle loads; and
a controller configured to control states of the first plurality of switches and the second plurality of switches to configure in a plurality of modes including:
a range improvement mode;
a first charging mode to perform charging at a first voltage level, wherein the one or more battery packs supply power at the first voltage level;
a vehicle to vehicle charging mode;
a second charging mode to perform charging at a second voltage level that is different than the first voltage level;
a battery preconditioning mode; and
an accessory load support mode that is operable:
during charging at a higher one of the first voltage level and the second voltage level; and
during operation at a higher one of the first voltage level and the second voltage level.