215results about "Fuel cells grouping" patented technology

The invention discloses a fuel cell stack quantitative design method and device, electronic equipment and a storage medium, the method and the device are applied to the electronic equipment, and specifically, multiple operation states of a fuel cell are subjected to quantitative treatment, including a dry-wet state, a mass transfer state and a balance state of the dry-wet state and the mass transfer state, so that multiple corresponding operation state parameters are obtained; establishing characteristic functions including voltage consistency, consistency stability, optimal performance, performance stability and consistency and performance synchronism for various operation characteristics of the fuel cell; obtaining a group of operation parameter sensitivity data generated by performing simulation or bench test on the fuel cell; constructing an increment curve and a quantization equation of the operation state based on the operation parameter sensitivity data; and carrying out association and quantitative definition on each operation characteristic function based on the increment equation of the operation state to obtain a plurality of indication functions which are used for carrying out quantitative design or evaluation on the operation state or the operation characteristic of the electric pile in the design process. Through quantitative design or evaluation, various mutually coupled characteristics can be accepted and rejected in the design process, so that the scientificity and efficiency of the design are improved.

The application discloses a fuel cell stack high stability calculation method and a fuel cell, and relates to the technical field of fuel cell stacks. The fuel cell stack high stability calculation method comprises the following steps: determining the actual number of single cells and the actual cross-sectional area of a cell stack core; determining the critical packaging load value of the cell stack according to the actual number of single cells, the actual cross-sectional area of the cell stack core and a single cell number-cell stack core cross-sectional area-cell stack packaging load value relationship diagram; determining the actual height-width ratio of the cell stack core according to the critical packaging load value of the cell stack, the actual number of single cells and a single cell number-cell stack core height-width ratio-cell stack packaging load value relationship diagram; and determining the length, width and height of the cell stack core according to the actual cross-sectional area of the cell stack core and the actual height-width ratio of the cell stack core. The number of single cells, the cross-sectional area of the cell stack core and the height-width ratio of the cell stack core can be matched and designed to ensure the stability of the cell stack.

Liquid membrane cell assemblies are disclosed. In some embodiments, the liquid membrane cell assembly includes an elongate base having opposed first and second end portions and a central portion disposed therebetween. The first and second end portions each includes an elongate body, an electrolyte channel within the body, an electrolyte port fluidly connected to the electrolyte channel, a fuel channel within the body, and a fuel port fluidly connected to the fuel channel. The central portion includes spaced and opposed first and second members that connect the bases of the first and second portions and that horizontally define an open area therebetween. The liquid membrane cell assembly additionally includes an anode adjacent the first and second members, and a cathode adjacent the first and second members such that the base is disposed between the anode and the cathode. The anode and cathode vertically define the open area therebetween.

An embodiment separator for a fuel cell includes a separator body having a plate shape and including a metal material on which a plurality of manifolds is provided to introduce or discharge reaction gas or cooling water and a molding gasket surrounding an inner edge of at least one manifold selected from among the plurality of manifolds provided on the separator body, the molding gasket being configured to prevent corrosion.

Fuel cell system, comprising: a first fuel cell (4a) and a second fuel cell (4b); a first purging device (14a) and a second purging device (14b) that can purge the first fuel cell (4a) and the second fuel cell (4b) independently of each other, wherein the first purging device (14a) is a first air compressor that supplies oxygenated air as cathode gas to the first fuel cell (4a) and the second purging device (14b) is a second air compressor that supplies oxygenated air as cathode gas to the second fuel cell (4a); and a control device (2) configured to control the first and second flushing devices (14a, 14b; 29a, 29b; 26a, 26b), wherein the control device (2) is configured to to control the rotational speed of the first rinsing device (14a) and the rotational speed of the second rinsing device (14b) so that they are equal to each other, to control the purge time of the first fuel cell (4a) so that it is shorter than the purge time of the second fuel cell (4b), and to start and complete the purging of the first fuel cell (4a) within a period in which the purging of the second fuel cell (4b) is carried out, where the electrical power generation volume of the second fuel cell (4b) is smaller than the electrical power generation volume of the first fuel cell (4a), the first fuel cell (4a) and the second fuel cell (4b) are purged when an ignition state of the fuel cell system is changed to an OFF state, and the control device (2) is configured to purge the first fuel cell (4a) with an amount of consumed electrical power that is less than the amount of electrical power consumed by purging the second fuel cell (4b).

The fuel cell system includes at least a pair of cells (110a, 110b), each cell including a metal substrate (120a, 120b) having first and second sides and a porous region (124) providing fluid communication between the sides, and a planar cell chemistry layer (111, 112, 113) including a fuel electrode layer, an electrolyte layer, and an air electrode layer, and coated or deposited over and supported by the porous region (124) on a first side thereof, the metal substrate (120a, 120b) including a metal electrode layer, an electrolyte layer, and an air electrode layer. A metal-supported planar cell device (200) in which the metal substrates (120) are arranged in a stacked configuration with the cell chemistry layers (111, 112, 113) of the metal substrates (120) overlying one another such that both of their first sides or both of their second sides face inward in a spaced apart opposing relationship, whereby the inwardly facing sides define a common first fluid volume (140) for one of fuel or oxidant between the metal substrates (120).

The utility model provides an all-vanadium redox flow battery stack which comprises a common end plate, a first side end plate and a second side end plate, the common end plate is arranged between the first side end plate and the second side end plate, and a first overflowing channel and a second overflowing channel are formed in the common end plate, the first side end plate and the second side end plate; the first flow passage is used for the first electrolyte to flow through, and the second flow passage is used for the second electrolyte to flow through. By arranging the common end plate and arranging the common end plate between the first side end plate and the second side end plate, when multiple groups of electric piles are combined, the common end plate positioned in the middle can be shared by two adjacent groups of electric piles, so that the use quantity of the end plates is reduced, the quantity of parts needing to be assembled is further reduced, the complexity of operations such as positioning and aligning in the assembling process is reduced, and the assembling efficiency is improved. And the difficulty of the whole assembly preparation process is reduced. In addition, after the number of the end plates is reduced, the number of the sealing points is correspondingly reduced, so that the whole assembly process is simpler and more convenient, and the production efficiency and the product reliability are improved.

A fuel cell apparatus includes a cell stack including a plurality of unit cells stacked one above another, an ejector including a nozzle configured to eject hydrogen to an anode of the cell stack and a diffuser disposed between the nozzle and the anode, a first contact part disposed adjacent to the nozzle so as to face the diffuser, a second contact part disposed at the diffuser so as to face the nozzle, and a concentricity analysis unit configured to inspect a degree of contact (e.g., contact or non-contact) between the first contact part and the second contact part and to determine, based on a result of inspection, whether the nozzle and the diffuser are concentric with each other.

Method for assembling a fuel cell stack (1), the method comprising: a plurality of planar fuel cells (15) are arranged along a stacking dimension within a stacking support (200), each of the fuel cells (15) comprising at least one membrane electrode arrangement positioned facing adjacent to a bipolar plate which defines at least one integrally formed edge extension in the form of an outwardly extending tab (17G); a potting material is poured into a section of the holder (200) that defines a shape corresponding to the extension in the form of the tab (17G), whereby the tab (17G) is overmolded with the potting material, so that after curing the potting material forms a reference point (18) that is attached to the arranged fuel cells (15) along the stacking dimension to provide increased resistance to intercellular movement of the arranged fuel cells (15) along a dimension orthogonal to the stacking dimension; and the arranged fuel cells (15) are mounted within a housing (20).

The utility model discloses a closed oxyhydrogen fuel cell power generation system which comprises a fuel cell stack and a circulating pump, the fuel cell stack is respectively connected with the circulating pump, an oxygen tank and a hydrogen tank, oxygen is conveyed to the fuel cell stack through the oxygen tank, hydrogen is conveyed to the fuel cell stack through the hydrogen tank, and the circulating pump is connected with the circulating pump. And cyclic utilization of oxygen is realized through the circulating pump. According to the utility model, the unreacted oxygen is recycled through the circulating pump, the pressure of the oxygen and hydrogen before entering the fuel cell stack is monitored while the oxygen and hydrogen are conveyed, and the opening degrees of the oxygen inlet electromagnetic valve and the hydrogen inlet electromagnetic valve are regulated according to the pressure; the problem of backflow caused by too large oxygen pressure of a circulation path before oxygen enters a reactor is solved by arranging a first check valve, gas pumped by a four-way connector cannot reversely flow into a circulation pump by arranging a second check valve, and a hydrogen pulse discharge electromagnetic valve and an oxygen pulse discharge electromagnetic valve are designed to be intermittently opened; hydrogen and oxygen can fully react, and the gas utilization rate is increased.

The invention relates to a separating device (10) for separating bipolar plates and membrane-electrode assemblies (101) of a fuel-cell stack (100), the separating device comprising: a first separating tool (12) which is designed to separate, in regions, a bipolar plate (101) connected to a membrane-electrode assembly from a membrane-electrode assembly, or a membrane-electrode assembly from a bipolar plate (101), thereby forming an initial gap between the bipolar plate (101) and the membrane-electrode assembly; and a second separating tool (26) which is designed to penetrate into the initial gap formed by the first separating tool (12).

The invention relates to a battery pack (1) comprising a plurality of electrochemical cells (4), the battery pack having an outer casing (10) of predetermined shape, with a main body (14) generally cylindrical of revolution about a body axis. The invention also relates to a fuel cell-based electrical power supply system, the system comprising a fuel cell, an electrical battery arrangement downstream of the fuel cell, a hydrogen gas supply arrangement, and a plurality of locations, each location being configured to receive a hydrogen tank in the form of a generally cylindrical cylinder, at least one of the locations being configured to receive, instead of a hydrogen tank, a battery pack having a shape substantially similar to a hydrogen tank. Abstract figure: Fig. 2

Various current collectors for redox flow batteries are described. The current collectors include at least one metal plate encapsulated in a conductive polymer end plate, the metal plate to the back of a stack end plate with a conductive adhesive, and a flat metal plate having deformable tabs. Battery flow systems incorporating the current collectors are also described. Battery flow systems with easily replaceable current collectors are also described.

The invention provides fuel cell stack test equipment and a detection method and system thereof, and the method comprises the steps: a control module controls a vertical guide assembly included in a guide module to move, and enables a probe assembly included in a measurement module to rise to be horizontally opposite to polar plates of a plurality of single cells in a fuel cell stack; the control module controls a horizontal guide assembly included in the guide module to move, so that the probe assembly is in elastic contact with polar plates of the plurality of single batteries; a voltage measuring assembly included in the measuring module is used for measuring the voltage of a plurality of single batteries, the voltage measuring assembly comprises a plurality of daisy chain type connected voltage measuring chips, and any voltage measuring chip is used for measuring the voltage of N single batteries; the control module obtains the voltages of the plurality of single batteries measured by the plurality of voltage measurement chips. After the technical scheme is adopted, the voltage of a plurality of single batteries can be automatically, simultaneously and accurately measured, the operation is simple and convenient, and the contact is good.

The present disclosure relates to a fuel cell system including a fuel cell stack, a humidifier configured to humidify air, which is to be supplied to the fuel cell stack, by means of moist air discharged from the fuel cell stack, a cleaning water supply line connected to the humidifier and configured to selectively supply cleaning water to the humidifier, and a cleaning water discharge line connected to the humidifier and configured to discharge the cleaning water to the outside of the humidifier, thereby obtaining an advantageous effect of improving durability and stability.

The invention relates to a separating device (10) for separating bipolar plates and membrane electrode assemblies (101) of a fuel cell stack (100), comprising a first separating tool (12) configured to partially separate a bipolar plate (101) connected to a membrane electrode assembly from a membrane electrode assembly or a membrane electrode assembly from a bipolar plate (101) by forming an initial gap between the bipolar plate (101) and the membrane electrode assembly, and a second separating tool (26) configured to penetrate the initial gap formed by the first separating tool (12).

The present application belongs to the technical field of fuel cell, and particularly relates to a fuel cell system, a scheduling optimization method thereof and a computer device. The method comprises the following steps: finding a backtracking point from a to-be-optimized load point; adding fuel cells in a can-run queue of the to-be-optimized load point to a must-run queue of the to-be-optimized load point, so as to find a maximum must-run queue of the to-be-optimized load point which can make the fuel cell system run from the to-be-optimized load point to the backtracking point without causing fuel cell shutdown, take the maximum must-run queue as an optimized must-run queue of the to-be-optimized load point, and accordingly obtain an optimized can-run queue of the to-be-optimized load point. The fuel cell can be started as early as possible and as much as possible, and after starting, the fuel cell can try to avoid shutdown as much as possible; the power change of the fuel cell system is more smooth, and the service life and operation efficiency of the fuel cell are improved.

The present disclosure relates to a fuel cell including a fuel storage material made of a mesoporous N-doped carbon material. The fuel storage material includes a composite material including a proton-conducting polymer material, a scaffold of coalesced (N-doped) carbon nanofoam particles, and a coating on the scaffold, the coating comprising N-doped graphitic carbon. The fuel storage material allows fuel to be stored within the fuel cell and is typically incorporated adjacent to an electrode to supply fuel to the electrode when the fuel cell is operating in redox mode.

Electrochemical cell systems (51) and electrochemical cell processes are described as applicable to power generation or electrolysis modes with systems that have a containment vessel interior space multiple electrochemical cell stack, stack inlet plenum (43) that can accommodate thermal expansion and contraction in an economical way and that can provide a substantially equivalent environment for each stack inlet as well as can include, if desired, either or all of a vessel external compression stack mount possibly configured as a cathode outlet manifold (111) configured as a stack mount, a fully accommodative thermal expansion-contraction electrochemical cell stack mount possibly configured with external springs (91), and even the possibility of an axial flow adjuster such as a gradation plate (99) for better operation.

In one example, a gas equalization system (400-401) and method of operation for an electrosynthetic or electroenergy liquid gas cell or cell stack (210) is disclosed. The gas equalization system (400-401) comprises a first equalization tank (410) for partially containing a first liquid (470) and a first gas. The first gas is positioned above a first liquid level (471). A first gas conduit (430) is provided for transferring the first gas between the cell or cell stack (210) and the first equalization tank (410). In another example, a second equalization tank (420) may be provided for partially containing a second liquid (473) and a second gas positioned above a second liquid level (472). A second gas conduit (440) is then provided for transferring the second gas between the cell or cell stack (210) and the second equalization tank (420).

The present disclosure generally relates to systems and methods comprising a bipolar plate interconnect. The bipolar plate interconnect includes a porous membrane metallurgically attached to a first side of a first stainless steel structure, and a nickel-phosphorous layer of non-uniform thickness positioned between the porous membrane and the stainless steel structure.

A handling device (1) for separating sheet-like articles of a first type (4) and of a second type (5), lying alternately on one another but not fully congruent, comprises at least one main gripper (7) provided for gripping one of the sheet-like articles of the first type (4) and at least one auxiliary gripper (12) provided for additionally gripping one of the sheet-like articles of the second type (5), wherein the different grippers (7, 12) are held on a common support structure (6, 8) and are movable relative to each other in a vertical direction such that, as the different sheet-like articles (4, 5) are picked up, an increasing distance can be produced between these articles (4, 5).

Provided herein generally are methods of accounting for hydrogen (H2) in a natural gas (NG) stream, i.e., a NG / H2 blend, from a public NG utility to residential and / or business facility fuel cell (FC) systems, where the NG / H2 blend powers the FC systems and the volume of NG / H2 blend supplied to each FC systems is measured. Such measurements along with other data of the operation of the FC system, such as the volume of NG / H2 blend or an increased volume of NG, can be reported or transmitted to the public NG utility for each residential and / or business facility FC system supplied with the NG / H2 blend, where a reduced carbon footprint can be determined for the use of the NG / H2 blend by the FC system(s).

The invention provides a turbofan engine and fuel cell hybrid power system, and relates to the technical field of aircraft power generation and propulsion. Comprising an engine assembly, a reformer and a fuel cell assembly. The engine assembly comprises a gas compressor, a combustion chamber and a turbine set, the gas compressor is suitable for outputting compressed air, the combustion chamber is suitable for mixed combustion of the compressed air and fuel, and the turbine set drives the gas compressor through acting of fuel gas from the combustion chamber. The reformer is constructed to utilize part of tail gas waste heat of the turbine set to conduct catalytic reforming on fuel so as to obtain hydrogen, and the gas compressor is constructed to provide part of compressed air for the reformer so as to adjust the catalytic reforming reaction temperature. The fuel cell assembly comprises a cathode and an anode, the anode performs oxidation reaction by utilizing reformed hydrogen, and the cathode reacts by utilizing part of compressed air to generate water vapor and conveys the water vapor to the reformer. The fuel cell outputs electric energy in the reaction process, and heats air flow outside the engine through the heat exchanger, so that gradient utilization of energy and improvement of the overall efficiency of the system are realized.

To provide a technique that can reduce the possibility of adverse effects caused by salt damage in a fuel cell system.SOLUTION: An exemplary fuel cell system includes a fuel cell module, an air intake portion that takes in air to the fuel cell module, and a housing that houses the fuel cell module and the air intake portion. The housing includes a first outer wall in which a salt removal device is disposed upstream of the air intake portion, and a second outer wall in which an electric wire arrangement portion in which electric wires are arranged is provided.SELECTED DRAWING: Figure 1

This invention belongs to the field of fuel cell technology and discloses a method for improving the temperature uniformity of an air-cooled proton exchange membrane fuel cell stack. The method includes: S1, configuring an adjustable-direction fan assembly and other functional components such as temperature sensors and controllers for the cathode-open air-cooled proton exchange membrane fuel cell stack as the working object; S2, starting the stack and controlling the fan assembly to run in the initial direction; S3, acquiring real-time temperature data at the inlet and outlet of the stack and calculating the current absolute value of the temperature gradient; S4, combining the real-time absolute value of the temperature gradient with a preset uniformity threshold to determine whether to switch the rotation direction of the fan assembly. This invention also discloses a corresponding system. Through this invention, the fixed temperature gradient at the cathode of the air-cooled fuel cell stack caused by traditional unidirectional cooling is broken, thereby improving the overall temperature uniformity inside the air-cooled fuel cell stack and extending its service life.

An apparatus and method for controlling operation of a fuel cell stack may include a cell, a fuel cell stack, a processor, and a memory storing at least instructions. When executed by a processor in communication with a memory, the instructions may cause the apparatus to detect a coolant temperature of the fuel cell stack and a state of charge (SOC) of the rechargeable battery, determine a temperature difference between the coolant temperature and a target coolant temperature, and determine an SOC difference between the SOC and a target SOC, determine based on the temperature difference and the SOC difference, and determine a temperature of the fuel cell stack based on the SOC difference. A method of operating a fuel cell stack includes determining a control voltage of the fuel cell stack, determining a deterioration index associated with the fuel cell stack based on a ratio of an actual current of the fuel cell stack to a reference current, adjusting the control voltage based on the deterioration index, and performing an operation of the fuel cell stack based on the adjusted control voltage.

The invention discloses an SOFC (Solid Oxide Fuel Cell) electric pile power generation system and a gas supply method thereof, and relates to the technical field of SOFC electric piles. Water-carbon ratio adjustment requirement data is converted into electric signal increment which is fed back to a controller, then the controller controls a first mass flow meter and a second mass flow meter to adjust the flow, flow velocity and pressure of natural gas and water vapor, the water-carbon ratio reaches the optimal value by controlling the inlet mole number of the water vapor and the natural gas, and finally the electrochemical reaction degree of the galvanic pile is accurately controlled. Therefore, the fuel cell stack achieves the optimal fuel utilization rate and the maximum power generation efficiency. According to the SOFC electric pile power generation system, before the natural gas CH4 and the water vapor enter the reforming hydrogen production reactor, the mixing proportion of the natural gas CH4 and the water vapor is easily regulated and controlled, and then the water-carbon ratio of the inlet gas of the reforming hydrogen production reactor is controlled, so that SOFC electric pile carbon deposition is avoided, the hydrogen production efficiency of an SOFC electric pile can be improved, the service life of the SOFC electric pile can be prolonged, and the problems existing in the prior art are solved.

The invention relates to a method for operating a fuel cell system, comprising a stack having a cathode and an anode, the cathode being supplied with air via an intake path, and the anode being supplied with a hydrogen-containing anode gas via an anode circuit. In this case, the anode gas discharged from the stack is passively recirculated via the anode circuit by means of a jet pump. In addition, anode gas is constantly removed from the anode circuit via a defined opening cross-section of a valve, preferably a purge valve and / or a bleed valve, and replaced with fresh hydrogen. According to the invention, a pressure difference across the stack is ascertained before the valve is opened, and when a predetermined minimum pressure difference is undergone: a) the opening cross-section of the valve is increased, and / or b) the power of the stack is increased. The invention also relates to a control device which is configured to carry out the method or the individual steps of the method.