US 12,466,346 B2
Methods and systems for vehicle power control
David Cox, London (GB); David Hesketh, Ingatestone (GB); Emil G. Serban, Ann Arbor, MI (US); Mario Balenovic, Noord Brabant (NL); and Bastian Hartmann, Hurth (DE)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Jun. 30, 2022, as Appl. No. 17/854,964.
Prior Publication US 2024/0001872 A1, Jan. 4, 2024
Int. Cl. B60R 16/023 (2006.01); B60L 58/20 (2019.01)
CPC B60R 16/0232 (2013.01) [B60L 58/20 (2019.02); B60L 2210/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for vehicle power control, the method comprising:
receiving a first high voltage, HV, demand signal from a HV device and a first low voltage, LV, demand signal from a LV system of a vehicle;
modifying the first HV demand signal based on the first LV demand signal, using a first time constant based on a minimum required ramp rate of the HV device and applying a filter to the HV demand signal using the first time constant, and using a second time constant based on a maximum permissible ramp rate of an e-machine, wherein the second time constant is determined based on a response time of an engine coupled to the e-machine;
receiving an input HV supply from the e-machine based on the first LV demand signal and modified HV demand signal;
providing an output LV supply from a first DCDC converter to the LV system of the vehicle and an output HV supply from a second DCDC converter to the HV device; and
modulating a voltage of the HV device based on the first LV demand signal to adjust current through the HV device.