US 12,441,214 B2
Fuel cell power management system
Jared M. Farnsworth, San Francisco, CA (US); Andrew G. Sata, Irvine, CA (US); and Daniel C. Folick, Los Alamitos, CA (US)
Assigned to TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC., Plano, TX (US); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken (JP)
Filed by TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC., Plano, TX (US)
Filed on Nov. 6, 2023, as Appl. No. 18/503,094.
Prior Publication US 2025/0145014 A1, May 8, 2025
Int. Cl. B60L 58/40 (2019.01); B60L 15/20 (2006.01); H01M 16/00 (2006.01); H02J 7/00 (2006.01)
CPC B60L 58/40 (2019.02) [B60L 15/20 (2013.01); H01M 16/006 (2013.01); H02J 7/0048 (2020.01); H01M 2250/20 (2013.01); H01M 2250/402 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vehicle comprising a fuel cell power management system, the system comprising:
a fuel cell;
a battery;
a charge sensor operatively coupled to the battery and configured to measure a battery charge of the battery;
a speedometer configured to measure a speed of the vehicle;
a processor comprising a memory and configured to:
calculate a mapping of desired fuel cell power output as a function of the battery charge and the speed of the vehicle;
using the mapping, the battery charge, the speed of the vehicle, and a motor power request, calculate a desired traction power output of the fuel cell;
set a traction power output of the fuel cell to the desired traction power output of the fuel cell;
set a desired traction power output of the battery to the motor power request minus the traction power output of the fuel cell; and
set a traction power output of the battery to the desired traction power output of the battery.