Abstract: Provided is a fuel cell system including a plurality of fuel cell stacks, in which with a simple configuration, air retention is unlikely to occur in cooling water and a flow rate of the cooling water to each fuel cell stack can be uniformized. In a fuel cell system including a plurality of fuel cell stacks provided with a coolant flow path through which a coolant flows, the plurality of fuel cell stacks are juxtaposed in a horizontal direction, and include a supply pipeline that distributes and supplies the coolant to the coolant flow path, and a discharge pipeline that collects and discharges the coolant that has flowed through the coolant flow path, and the supply pipeline and the discharge pipeline are provided within a formation range where the coolant flow path is formed in the plurality of fuel cell stacks, in a direction of gravity.

Abstract: A battery safety system includes a flow valve and a sensing device. The flow valve is disposed on a housing of the battery and includes a first valve that is embedded inside the housing and a second valve that intersects the housing. The first valve includes a cavity through which analytes released upon electrochemical reactions within the battery flow towards the second valve. The second valve extends through the housing to the outside, and defines an opening through which the released analytes exit the housing. The sensing device is disposed within the cavity of the first valve of the valve and is situated in a manner to be in fluidic contact with the released analytes as they flow from the inside of the battery to the outside. In some aspects, the battery safety system can detect a minute presence of one or more analytes. In some aspects, the sensor is in communication with a battery management system.

Abstract: An air-cooling fuel cell stack includes fuel cells, wherein each of the fuel cells includes an anode bipolar plate, a cathode bipolar plate, a membrane electrode assembly (MEA) between the anode and cathode bipolar plates, and an anode sealing member. The MEA includes an anode side structure, a cathode side structure, and an ion conductive membrane (ICM), and the ICM is sandwiched between the anode side structure and the cathode side structure. The anode sealing member is disposed at a periphery of the anode side structure and sandwiched by the anode bipolar plate and the ICM. The anode sealing member includes a first sealing material and a second sealing material, a Shore hardness of the first sealing material is different from that of the second sealing material, and an arrangement direction of the first and second sealing materials is perpendicular to a compression direction of the plurality of fuel cells.

Abstract: The present disclosure relates to a fuel cell system including a discharge line configured to discharge exhaust gas, which is discharged from a fuel cell stack, to the outside, and a pneumatic branch line having an outlet end connected to the discharge line, and an inlet end connected to a pneumatic supply unit configured to supply air to a pneumatic part of a mobility vehicle, the pneumatic branch line being configured to selectively supply the air from the pneumatic supply unit to the discharge line, thereby effectively reducing a hydrogen concentration in the exhaust gas discharged from the fuel cell stack.

Abstract: A fuel cell system that can offer fuel efficiency and water drainage performance which are compatible with each other, the fuel cell system including a fuel cell stack; a fuel gas supply device; a gas-liquid separator; a pressure measuring device; and a controlling unit, wherein the controlling unit controls pulsed operation of the fuel gas supply device in such a way that a measured pressure is within the range of a preset upper limit pressure and lower limit pressure, and the controlling unit uses a flow rate increasing control at least once when the pressure rises in the pulsed operation before the pressure reaches the upper limit pressure, as long as the pressure does not exceed the upper limit pressure, the flow rate increasing control being to increase the supply of the fuel gas supplied by means of the fuel gas supply device.

Abstract: A fluid flow field of a separator of a fuel cell stack allows a fluid to flow in a separator surface direction. A rubber seal member provides a seal between the fluid passage and the fluid flow field. The tunnel portion intersects the rubber seal member at an intersection. The tunnel portion allows the fluid flow field and the fluid passage to connect to each other. In the rubber seal member, a first portion protrudes from a flat portion in a stacking direction, and a second portion protrudes from a protruding end surface of a tunnel portion in the stacking direction.

Abstract: A multi-layer heat insulation element for thermal insulation of a battery is proposed, with a first cover layer, with a second cover layer and with a compressible and/or pliable intermediate ply arranged between the cover layers, which has at least one heat-resistant fibre layer, wherein the fibre layer is formed from a needled nonwoven and/or wherein the cover layers are flexurally weak and the heat insulation element as a whole is compressible and flexibly pliable.

Abstract: A battery support structure for a vehicle includes a first peripheral member configured to be supported by a longitudinal section of a vehicle frame. A second peripheral member has an end surface that selectively attaches at an inside surface of the first peripheral member to enclose a corner section of a battery containment area. Prior to fixed attachment of the first and second peripheral members, a slip plane is defined between the end surface and the inside surface to adjust the second peripheral member along the first peripheral member to a predefined dimension of the battery containment area.

Abstract: A fuel cell system column includes a first terminal plate connected to a first electrical output of the column, a second terminal plate connected to a second electrical output of the column, at least one first fuel cell stack located in a middle portion of the column between the first terminal plate and the second terminal plate, and at least one electrical connection which is electrically connected to the middle portion of the column and which is configured to provide a more uniform fuel utilization across the first column.

Abstract: The present document relates to a cell for an electrochemical system, comprising two separator plates, a membrane electrode assembly (MEA) arranged between the separator plates, and at least one flexible electrical cable for tapping off an electrical voltage. The separator plates, the MEA and the cable can be compressed with one another, the flexible cable has a first end portion and a second end portion, the first end portion is arranged for fastening between the separator plates, and the second end portion protrudes laterally from the cell.

Abstract: A power storage device includes a power storage module, a pair of current collector plates configured to be stacked to interpose the power storage module in a first direction that is vertical, a pair of insulating plates configured to be stacked to interpose the power storage module and the pair of current collector plates in the first direction; and a pair of restraint plates configured to be stacked to interpose the power storage module, the pair of current collector plates, and the pair of insulating plates in the first direction. The power storage module is configured to include an accommodation space that accommodates an electrolytic solution together with a power generation element. A pressure adjustment valve communicating with the accommodation space is provided on a side surface of the power storage module.

Abstract: Provided is a lithium metal secondary battery comprising a cathode, an anode, an electrolyte-separator assembly disposed between the cathode and the anode, wherein the anode comprises: (a) an anode active material layer containing a layer of lithium or lithium alloy optionally supported by an anode current collector; and (b) an anode-protecting layer in physical contact with the anode active material layer and in ionic contact with the electrolyte-separator assembly, having a thickness from 10 nm to 500 ?m and comprising an electrically and ionically conducting network of cross-linked conjugated polymer chains having a lithium ion conductivity from 10?8 to 5×10?2 S/cm and an electron conductivity from 10?8 to 103 S/cm.

Abstract: A method of operating a fuel cell system includes providing an anode exhaust from a fuel cell stack to a water injector, supplying water to the water injector, and injecting the water from the water injector into the anode exhaust to vaporize the water and generate a humidified anode exhaust.

Abstract: Electrochemical cells and methods of making electrochemical cells are described herein. In some embodiments, an apparatus includes a multi-layer sheet for encasing an electrode material for an electrochemical cell. The multi-layer sheet including an outer layer, an intermediate layer that includes a conductive substrate, and an inner layer disposed on a portion of the conductive substrate. The intermediate layer is disposed between the outer layer and the inner layer. The inner layer defines an opening through which a conductive region of the intermediate layer is exposed such that the electrode material can be electrically connected to the conductive region. Thus, the intermediate layer can serve as a current collector for the electrochemical cell.

Abstract: The present disclosure relates to a fuel cell hot box for improving the system efficiency of a fuel cell, wherein all of a fuel cell stack part, an afterburner, a reformer, and an air-heat exchange unit are provided inside a main chamber, fuel may be reformed and preheated using heat of the fuel cell stack part and heat of combustion gas generated by the afterburner, and at the same time, air may be also preheated. Thus, wasting energy can be prevented, the lifetime of the entire system can be increased by cooling the fuel cell stack part and increasing the durability of the fuel cell stack part against thermal stress, and a plurality of fuel cell stack parts share the center chamber, thereby simplifying a configuration of the fuel cell hot box.

Abstract: An apparatus is provided for conditioning at least one process gas which is supplied to at least one electrochemical converter, via at least one process gas supply. The process gas supply has a humidifying unit configured and arranged to introduce a humidifying agent into the process gas. Water in a supercritical state can be introduced as the humidifying agent.

Abstract: An ejector has a variable nozzle structure and is installed in a fuel cell recirculation line to supply new hydrogen and a recirculation gas. The ejector includes: a first housing having a first hole through which hydrogen is supplied and an orifice through which the hydrogen is discharged; a second housing disposed in the first housing and having a second hole into which the hydrogen passing through the first hole flows; and a poppet penetrating a third hole defined at one side of the second housing. The poppet is configured to adjust an area of a space opened by the orifice discharging the hydrogen. The hydrogen flowing into the second housing is discharged through a space between the other side opposite to the one side of the second housing and the poppet to move to the orifice.

Abstract: A pulse hydrogen supply system for a proton exchange membrane fuel cell is provided. The system comprises a fuel cell, a high-pressure hydrogen bottle, a first pressure relief valve, an ejector, a steam-water separator, a first pressure control valve, a first pressure sensor, a high-pressure vessel, a first electromagnetic valve, a low-pressure vessel, a diaphragm pump, and a second electromagnetic valve. The high-pressure hydrogen bottle, the first pressure relief valve, the first pressure control valve, the ejector and the first pressure sensor are sequentially arranged on a gas inlet pipeline; the high-pressure vessel and the first electromagnetic valve are sequentially arranged on a branch pipeline; the second electromagnetic valve, the low-pressure vessel and the diaphragm pump are sequentially arranged on a first output loop; and the first output pipeline and the gas inlet pipeline form a loop.

Abstract: The present invention is directed to aqueous solid polymer electrolytes that comprise a lithium salt and battery cells comprising the same. The present invention is also directed to methods of making the electrolytes and methods of using the electrolytes in batteries and other electrochemical technologies.

Abstract: 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.