Presented are battery assemblies with integrated fuel tanks, methods for making/using such battery assemblies, and fuel cell electric vehicles having rechargeable traction battery packs with integrated fiber-composite hydrogen fuel tanks. A rechargeable energy storage system (RESS) assembly includes a battery pack housing with an internal battery module compartment located between two tank mounting cavities. Each mounting cavity is recessed into a respective lateral side of the battery pack housing. Multiple rechargeable battery modules are electrically interconnected with one another and mounted inside the battery module compartment. Each battery module contains multiple battery cells, such as a stack of series-connected lithium-ion pouch cells. A fuel tank is mounted in each of the tank mounting cavities on the lateral sides of the battery pack housing. Each fuel tank, which may be fabricated from a carbon fiber reinforced polymer, stores and selectively dispenses a fuel, such as a hydrogen-rich, compressed gas fuel.

The present invention relates to an apparatus, detachably mountable to the external surface of an aircraft. More specifically, the present invention relates to a fully self-contained apparatus comprising an electrical device, such as a

Directed Energy Weapon (DEW), and a corresponding thermal management system and power supply.

The present invention relates to a system and method for the efficient heat management of a low-temperature fuel cell which is supplied from a metal hydride store. The system of the invention makes it possible to achieve, for example, discharge temperatures of the metal hydride store of about 180° C. in the case of low-temperature fuel cells operated at about 85° C.

A fuel cell system includes a fuel cell, auxiliary machinery, a tank, a storage amount detection unit that detects a measured value representing the amount of fuel gas stored in the tank, a secondary battery, a power accumulation amount detection unit that detects an amount of power accumulated in the secondary battery, a feed detection unit, and a control unit. The control unit stops the supply of the fuel gas to the fuel cell when the measured value is less than a threshold value, electrically disconnects the secondary battery from the auxiliary machinery when the amount of accumulated power is less than a lower limit amount of accumulated power, and electrically connects the secondary battery to the auxiliary machinery after the feeding of the fuel gas to the tank is detected.

A flow battery system and methods are provided for eliminating crossover issues of active materials in redox flow batteries. A solid adsorbent with large specific surface area is disposed in an electrolyte of at least one half-cell, in contact with the electrolyte. During a charging process, the active material in a charged state is captured and stored on surfaces of the adsorbent, so that concentrations of the active material in the electrolyte in the charged state is reduced and the crossover is inhibited. During a discharging process, the active material is desorbed from the adsorbent to the electrolyte and pumped into the stack for reaction. The flow battery stack can have a microporous membrane separator. The electrolyte of the flow battery includes zinc iodide as active material and polyethylene glycol (PEG) as an additive.

The present invention discloses a hydrogen supply apparatus and a method for operating the apparatus, which can protect a fuel cell and extend the service life of a fuel cell. The hydrogen supply apparatus includes a large-capacity hydrogen storage apparatus, a small-capacity hydrogen storage apparatus, a second shut-off valve, and a pressure reducing valve, etc. The small-capacity hydrogen storage apparatus is automatically filled with fuel gas when the fuel cell is operating, and when the fuel cell is in standby mode, fuel gas is transferred into the fuel cell by controlling the opening and closing time and the period of the second shut-off valve, so that protection of the fuel cell and extension of the fuel cell life are realized.

A dehydrogenation method for hydrogen storage materials, which is executed by a fuel cell system. The fuel cell system includes a hydrogen storage material tank, a heating unit, a fuel cell, a pump, a water thermal management unit and a heat recovery unit. The described dehydrogenation method utilizes the heating unit and the heat recovery unit to provide thermal energy to the hydrogen storage material tank, so that hydrogen storage material is heated to the dehydrogenation temperature. The pump extracts hydrogen from the hydrogen storage material tank, so that the hydrogen storage material is under negative pressure (i.e. H.sub.2 absolute pressure below 1 atm), according to which the hydrogen storage material is dehydrogenated, and the dehydrogenation efficiency and the amount of hydrogen release are improved. The method n can reduce the dehydrogenation temperature of the hydrogen storage material, and reduce the thermal energy consumption for heating the hydrogen storage material.

Aluminum can be used as a fuel source when reacted with water if its native surrounding oxide coating is penetrated with a gallium-based eutectic. When discrete aluminum objects are treated in a heated bath of eutectic, the eutectic penetrates the oxide coating. After the aluminum objects are treated, the aluminum objects can be reacted in a reactor to produce hydrogen which can, for example, react with oxygen in a fuel cell to produce electricity, for use in a variety of applications.

A catalytic device includes a hollow body, a piston housed in the hollow body, a catalyst of a gas generation reaction based on bringing a reactive liquid into contact with the catalyst, the catalyst being housed in a catalysis chamber, the piston and the hollow body defining a hermetic compression chamber for containing a compressible fluid, and being mobile relative to one another between a closed position in which the catalysis chamber is tight to the reactive liquid, and an open position for the entry of the reactive liquid into the catalysis chamber. The catalytic device is conformed to switch from the open position to the closed position, respectively from the closed position to the open position, when the compressible fluid is contained in the compression chamber and a force applied to the piston is greater than or equal to, respectively less than, a closure force.

A fuel cell system and a method for operating the fuel cell system, wherein the fuel cell system includes a fuel cell, a controller, a switch, an oxygen supply device and an output circuit. The fuel cell includes an anode and a cathode. The fuel cell is a cathode enclosed fuel cell. The controller is used to drive control signal for adjusting the electrochemical metering ratio of oxygen flow, supplied by the oxygen supply device, to output current, wherein the electrochemical metering ratio is ‘a’, and ‘a’ satisfies: 1≤a≤4. The method of the present disclosure uses the fuel cell system of the present disclosure, which optimizes the performance of a fuel cell and makes the output interruption time very short; hence it is highly beneficial for providing a more stable output.