A fuel cell system includes a plurality of stacked bipolar plate assemblies. Each of the plurality of stacked bipolar plate assemblies includes a first subgasket including a first peripheral edge. The first subgasket supports a first membrane electrode assembly (MEA). A second subgasket including a second peripheral edge. The second subgasket supports a second MEA. A bipolar plate is disposed between the first subgasket and the second subgasket. The bipolar plate has a first side defining a first plurality of passages receptive of a cathode fluid, a second side defining a second plurality of passages receptive of an anode fluid, and a plurality of coolant passages defined between the first subgasket and the second subgasket. A seal bead extends around the bipolar plate. The seal bead seals against the first subgasket and the second subgasket. An energy attenuating bead extends about the bipolar plate spaced from the seal bead.

A device for recovering and regulating thermal energy of an electric vehicle with an electrochemical generator wherein a fluid circulates, includes an air-conditioning circuit, a first heating or thermal energy recovery circuit for heating and a second cooling or thermal energy recovery circuit for cooling the electrochemical generator, an electric motor, an electronic circuit, and a braking circuit. A plurality of valves are arranged to put the air- conditioning circuit in communication with the first heating circuit or second cooling circuit, and means for controlling said valves arranged to allow, according to a temperature of the electrochemical generator, of the electric motor, of the electronic circuit and of the braking circuit, the circulation of the fluid from the air-conditioning circuit in the first heating circuit for a heating operation as well as the circulation of the fluid from the air-conditioning circuit in the second cooling circuit for a cooling operation.

A cable that includes a conductor defining a hollow interior, a casing surrounding the conductor, an electrical insulator positioned between the conductor and the casing, and a fluid positioned within the hollow interior of the conductor.

A fuel cell system includes a plurality of stacked bipolar plate assemblies. Each of the plurality of stacked bipolar plate assemblies includes a first subgasket including a first peripheral edge. The first subgasket supports a first membrane electrode assembly (MEA). A second subgasket including a second peripheral edge supports a second MEA. A bipolar plate is disposed between the first subgasket and the second subgasket. The bipolar plate has a first side defining a first plurality of passages receptive of a cathode fluid, a second side defining a second plurality of passages receptive of an anode fluid, and a plurality of coolant passages defined between the first subgasket and the second subgasket. A seal bead extends around the bipolar plate. The seal bead seals against the first subgasket and the second subgasket. A compliant energy attenuating bumper extends about the bipolar plate spaced from the seal bead.

A vehicle power system including a fuel cell auxiliary power unit for providing clean, efficient power to a vehicle. The system generally includes a fuel cell with a first DC output and a heat output, a pressure vessel adapted to contain and provide pressurized hydrogen to the fuel cell, an electrical storage unit with a DC input coupled to the first DC output of the fuel cell. The electrical storage unit also has a second DC output. An inverter is coupled to the second DC output of the electrical storage unit to receive power, the inverter having a first AC output. The system can provide heat, AC power, and DC power to the vehicle.

An apparatus includes an integrated heat exchanger and reactor module. The integrated heat exchanger and reactor module includes a heat exchanger channel, and a reactor channel which is thermally coupled to the heat exchanger channel. The reactor channel includes a layer of catalyst material that is configured to produce hydrogen by endothermic catalytic decomposition of ammonia, which flows through the reactor channel, using thermal energy that is absorbed by the reactor channel from the heat exchanger channel.

A fuel cell system includes: a supply flow path configured to supply reactant gas; a first branch flow path branching off from an outlet end of the supply flow path and configured to guide the reactant gas to a first fuel cell stack; a second branch flow path branching off from the outlet end of the supply flow path and configured to communicate with the first branch flow path and guide the reactant gas to a second fuel cell stack; and an inlet area change part disposed in a boundary zone between the first branch flow path and the second branch flow path and configured to selectively change inlet areas of the first and second branch flow paths. Efficiency in discharging condensate water is increased and performance and operational efficiency are improved.

A method and system provide a fitting system for a flexible fuel cell of an aircraft. The fitting system may include a flexible fuel cell and a fitting. The fitting may have a peripheral flange with a series of slots spaced about the flange. A series of fabric strips may be threaded into the slots of the fitting and one or more adhesives may couple the fabric strips to the fuel cell. The fabric strips may extend out around the periphery of the fitting to provide a uniform contact surface area with the fuel cell. The fabric strips may be separated by fuel cell material. The fabric strips may be made from one or more materials for enclosing or holding fuel. The fitting may further include threaded holes wherein the threaded holes may receive fasteners to couple the fitting to the fuel equipment of an aircraft.

A liquid recovery device includes: an outer pipe that includes an introduction portion into which a gas-liquid two-phase fluid is introduced; an inner pipe disposed inside the outer pipe at a position where the introduction portion is extended to a downstream side in a flow direction of the gas-liquid two-phase fluid; a double pipe portion that includes a clearance part provided between an inner side of the outer pipe and the inner pipe at a downstream side of the outer pipe in the flow direction; a communication hole that communicates the inner side of the inner pipe with the clearance part; and a drainage portion connected to the clearance part to discharge the liquid-phase fluid flowing into an interior of the clearance part.

The disclosure relates to an unmanned aerial vehicle, wherein a fuel cell system component provides a structural component of the vehicle. In some instances propulsion modules affixed to wings are oriented so as to provide airflow to plates of a fuel cell via air inlets for each fuel cell provided at the forward surface of each wing, a fuel cell system component forming a portion of the body and wherein the air inlets are unblocked during flight, each propulsion module is configured to provide air as an oxidant to a fuel cell via the air inlets.