In a fuel cell vehicle and a method of controlling the fuel cell vehicle, when a gas pressure in a high pressure tank becomes less than a first threshold pressure, the SOC of an energy storage device is increased to a margin SOC. When the gas pressure becomes a second threshold pressure which is lower than the first threshold pressure, the amount of fuel released from the high pressure tank is limited to prevent the occurrence of buckling, and limit the travel driving force by the motor to a required limit. At the time of limiting the travel driving force, electrical energy of the energy storage device is used to provide assistance in a manner that the travel driving force by the motor becomes the travel driving force of the required limit.

The present invention provides a methanol solid oxide fuel cell and a power generation system comprising the same, wherein the fuel cell is a tubular SOFC cell stack, the tubular SOFC cell stack comprises a plurality of tubular SOFC single cells, and a side wall of an inner pipe of the tubular SOFC single cell at a fuel inlet is of a porous layer structure; an inner wall of the inner pipe is coated with a methanol pyrolysis catalyst layer, and the thickness of the catalyst layer gradually increases along a moving direction of the fuel in the inner pipe. The methanol solid oxide fuel cell can effectively relieve carbon deposition of the anode of the methanol SOFC, and can ensure that the temperature of the whole cell is more uniform and the cell performance is more stable.

An automotive fuel cell stack includes anodes and cathodes, and a controller that, after receiving data indicating that load current demand is within a first pre-determined range, modulates a flow rate of air to the cathodes between zero and a pre-determined value until a cell output voltage achieves a value falling within a second pre-determined range greater than zero.

Disclosed are apparatuses, systems, methods, and devices for generating high-pressure gas such as hydrogen and oxygen. In one aspect, an apparatus is disclosed. The apparatus includes a reactor which includes a pressure vessel containing a metal compound configured to react with a liquid to generate the high-pressure gas when the liquid is available in the vessel. The reactor includes an outlet configured to pass the generated high-pressure gas out of the vessel. The apparatus also includes a receiver configured to store the generated high-pressure gas generated in the vessel and passed to a receiver via the outlet or passed directly to fuel cell or vehicle tank.

The present invention relates to a flow battery system. The system comprises a first and second electrode comprising a lattice structure and at least one electrolyte supply configured to provide flow electrolyte through at least one of the first and second electrodes. A power circuit is operatively connected to the first and second electrodes to provide electrical power from the system.

A pressure reducing valve for a fuel cell vehicle system which has an inlet, an outlet, a first stage unit, a second stage unit and a secondary safety device acting between the inlet and the first stage unit is provided. The secondary safety device is adapted to lower or stop a gas flow between the inlet and the first stage unit when the gas flow exceeds a preset threshold flow.

A hydrogen release and storage system (100) of the present invention includes a first hydrogen release and storage unit (100A) composed of a first hydrogen compound member (101A), a first container (102A) that accommodates the first hydrogen compound member (101A), a first heating apparatus (103A) configured to heat an inside of the first container (102A), a first cooling apparatus (104A) configured to cool the inside of the first container (102A), a first water supply apparatus (105A) configured to supply water to the first container (102A), a second hydrogen release and storage unit (100B) composed of a second hydrogen compound member (101B), a second container (102B) that accommodates the second hydrogen compound member (101B), a second heating apparatus (103B) configured to heat an inside of the second container (102B), a second cooling apparatus (104B) configured to cool the inside of the second container (102B) and a second water supply apparatus (105B) configured to supply water to the second container (102B).

A protective layer for an electrolyte in a flow battery and an electrolyte tank having a protective layer. The protective layer includes a light oil that includes hydrophobic hydrocarbons. The light oil having a density lower than a density of the electrolyte, the hydrophobic hydrocarbons being non-reactive to the electrolyte. The protective layer may be a liquid layer or may include a substrate impregnated with the light oil. An inert gas may also be utilized in the electrolyte tank.

A method for controlling a fuel cell system having a hydrogen fuel injector/ejector and a control system, includes determining a hydrogen fuel consumption rate associated with a selected power level at steady state, determining a modeled hydrogen fuel flow rate associated with the selected power level and the injector/ejector, determining a modeled effective flow area associated with the injector/ejector, determining a true effective flow area of the injector/ejector, and using the effective flow area to calculate or adjust a command signal, an estimation or an estimation error of at least one of a hydrogen fuel flow rate, an anode leak rate and an anode exhaust valve flow rate.

Systems and methods are provided for electrolyte and current circulation in a redox flow battery system. In one example, the redox flow battery system may include a plurality of redox flow battery cells electrically coupled in series. In this way, a potential difference across the plurality of redox flow battery cells may be ramped up, such that relatively high voltage external loads may be powered by the redox flow battery system. In some examples, each of the plurality of redox flow battery cells may be fluidically isolated from one another. As such, in one example, the redox flow battery system may further include a plurality of electrolyte storage tanks respectively fluidically coupled to the plurality of redox flow battery cells. Such fluidic isolation of each of the plurality of redox flow battery cells may eliminate stack-to-stack shunting in the redox flow battery system, as well as improve a modularity thereof.