The present invention relates to a system and process for the accumulation of electrical energy, the system containing an electrochemical reactor comprising: an electrode compartment comprising molecular hydrogen, an electrode compartment comprising a liquid phase (a), an electrode compartment comprising a liquid phase (b), a catalytic surface comprising an electrocatalyst for the oxidation reaction of hydrogen, a catalytic surface comprising an electrocatalyst for the reduction reaction of water and an ion exchange membrane, wherein electrode compartment and electrode compartment are separated from one another by the catalytic surface, electrode compartment is in turn separated from electrode compartment by the ion exchange membrane and the free end of electrode compartment is in contact with the catalytic surface.

It is an object of the invention is a fuel cell system architecture provides a good weight distribution, improved trunk space without reducing the security against front-end and rear end collision. The above objective is accomplished by a fuel cell vehicle comprising:—A rear vessel for hydrogen gas located in the rear part of the vehicle,—A front vessel for hydrogen gas located in the front part of the vehicle,—A hydrogen dosing unit,—A hydrogen control unit connected to the hydrogen dosing unit, to the rear vessel and to the front vessel, the hydrogen control unit being provided with first means for equalizing the pressure between the first rear vessel and the front vessel, the hydrogen control unit being provided with second means for transferring hydrogen at a predetermined pressure level to the hydrogen dosing unit from the two vessels,—An air supply,—A fuel cell connected to the hydrogen dosing unit and the air supply, the air supply being provided with means for providing the fuel cell with air, the hydrogen dosing unit providing the fuel cell with hydrogen,—A battery,—A DC/DC-converter,—The fuel cell being connected to the battery so as to provide the battery with energy, the battery and the DC/DC-converter being interconnected so as to exchange energy, the fuel cell and the battery, being located at the bottom of the vehicle.

A direct heat to electricity engine includes solid state electrodes of an electrochemically active material that has an electrochemical reaction potential that is temperature dependent. The electrodes are configured in combination with electrolyte separators to form membrane electrode assemblies. The membrane electrode assemblies are grouped into pairs, whereby each membrane electrode assembly of a given pair is ionically and electronically interconnected with the other. One membrane electrode assembly of a given pair is coupled to a heat source with the other to a heat sink. One membrane electrode assembly of the pair is electrically discharged while the other is electrically charged, whereby the net and relative charge between the two remains constant because of the electronic and ionic interconnection and the difference in temperature of the membrane electrode assemblies, and thereby voltage, results in net power generation.

A hydrogen-energy control system according to the present embodiment includes a hydrogen energy system, a power grid control system, a hydrogen transport system, and a hydrogen-energy integrated management system configured to control the hydrogen energy system based on information on communication with the power grid control system, wherein the hydrogen-energy integrated management system includes a first communication portion configured to perform communication of at least data of a charge request in charge and discharge requests with the power grid control system, a second communication portion configured to perform communication of hydrogen demand data with the hydrogen transport system, a target hydrogen-amount acquisition portion configured to acquire a target hydrogen-production amount based on the hydrogen demand data, and an operation planning portion configured to create an operation plan in the hydrogen energy system based on the target hydrogen-production amount and the data of the charge request.

The present invention comprises a method and system for improving the energy efficiency of a vanadium flow battery, VFB. This is achieved by simultaneously reconditioning the VFB through in-situ activation of the electrodes.

Some embodiments include an energy source supply appliance. The energy source supply appliance can comprise an appliance energy source supply system, and the appliance energy source supply system can comprise a first thermal control device and a second thermal control device. The appliance energy source supply system can be configured to receive a hydrogen fuel energy source and to make available the hydrogen fuel energy source to a receiver vehicle, and the receiver vehicle can comprise a drive system configured to use the hydrogen fuel energy source received by the receiver vehicle to motively power the receiver vehicle. Other embodiments of related systems, devices, and methods also are provided.

A fuel cell based power generator includes a fuel cell element, an ambient air path configured to receive ambient air and provide the ambient air across a cathode side of the fuel cell element, receive water from the fuel cell element and provide wet air to the water exchanger element, and a fuel cell cooling mechanism associated with the fuel cell element, separate from the ambient air path and configured to cool the fuel cell element.

An electric power supply device supplies electric power to a work machine having an electric power source. The electric power supply device includes a fuel cell different from the electric power source and an electric power connecting section for transferring electric power between the electric power source and the electric power supply device. A control device for controlling the electric power supply device includes a rated capability obtaining section for obtaining the information indicating the rated value of the charge and discharge capability of the electric power source of the work machine in response to the electric power supply device being mounted in the work machine or the electric power supply device being able to utilize the electric power of the electric power source, and an operating condition determining section for determining the operating condition of the electric power supply device based on the rated value.

Power is generated efficiently using fuel. A power generation unit includes a power generation module that generates power using fuel, a supply unit that supplies fuel to the power generation module, a power converter that converts DC power supplied by the power generation module into AC power, and a controller that controls the supply unit and the power converter. The controller controls the supply unit or the power converter so that the output power supplied to a load with fluctuating power consumption becomes greater than the power consumption of the load by a predetermined margin.

Described herein are systems and methods of storing and delivering electrical using hydrogen at low-cost and for long-durations. The systems and methods use energy-bearing redox pairs that electrochemically bear energy through decoupled hydrogen and oxygen consumption and/or evolution reactions, which are typically associated with fuel cells. Each species of the energy-bearing redox pair is associated with a standard electrode potential within a water electrolysis voltage window for the electrolyte solution. Electrical energy delivery, hydrogen generation, electrolyte regeneration, or combinations thereof can be performed by logically or physically separated unit operations in a continuous manner, batch manner, or semi-batch manner facilitated by the energy-bearing redox pair.