Patent ID: 11862780
Assignee: ZEROAVIA, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 0:
1. An integrated fuel cell stack and battery system, comprising:
a fuel cell stack configured to supply power to a propulsion inverter;
a battery configured to supply power to the propulsion inverter;
a plurality of system disconnects operably connected to the fuel cell stack and the battery;
a plurality of bypass diodes operably connected to the fuel cell stack and the battery,
wherein the plurality of bypass diodes and the plurality of system disconnects are configured to selectively provide power to the propulsion inverter by at least one of the battery or the fuel cell stack either individually or simultaneously;

a sensor configured to detect an output voltage of the integrated fuel cell stack and battery system; and
an output control system configured to cause the integrated fuel cell stack and battery system to:
access a first accessed signal from the sensor;
determine if the accessed first signal is greater than a first threshold voltage as first a determination; and
operably connect an output of the battery to the integrated fuel cell stack and battery system by the plurality of system disconnects based on the determination; and
a voltage limiting device configured to present an output load; and
a voltage regulating disconnect operably connected to the voltage limiting device and the output of the integrated fuel cell stack and battery system, the voltage regulating disconnect configured to prevent the output voltage to be greater than a predetermined threshold voltage on the output of the integrated fuel cell stack and battery system by switching in the voltage limiting device, based on the first accessed signal,
wherein the voltage limiting device includes a calibrated load configured to load the output of the integrated fuel cell stack and battery system in a case where the output voltage exceeds the predetermined threshold voltage.