142 results about "Fuel cell bus" patented technology

The invention relates the fuel battery coach controlling method on base of the CAN bus internet communication used for hybrid power system, using the direct converting means to carry out energy management control. The CAN bus sends the main voltage signal VDC/DC, motor rotation rate signal rmotor and throttle pedal signal Acc_ps to full control device; in full control device looking up goal torque Tmotor and calculate demand total power Pmotor, auxiliary device power PAUX and accumulator charge-discharge power Pbat; calculate DC/DC output current IDC/DC; IDC/DC passes first order filtration, after meeting the DC/DC converter dynamic regulator course, then the full control device sends it to DC/DC control device by CAN bus, and realize the DC/DC current control. The invention can realize the accurately control of load power, and provide the flat form for any kind of energy controlling method; the charge and discharge state provided by secondary energy can be controlled; the integral efficiency of power system is improved.

A fuel cell is made by laminating an anode channel 2 supplied with hydrogen or a hydrogen-containing gas g_H, a cathode channel 3 supplied with oxygen or an oxygen-containing gas G_O, and an electrolyte 4 arranged between the cathode channel and the anode channel. The electrolyte 4 is made by laminating a hydrogen separating metal layer for making hydrogen supplied to the anode channel 2 or hydrogen in a hydrogen-containing gas G_H supplied to the anode channel 2 permeate; and a proton conductor layer made of ceramics, for establishing the hydrogen having permeated the hydrogen separating metal layer in a proton state and making it reach the cathode channel 3. In addition, the fuel cell has a coolant channel 5 for cooling the fuel cell 1. In the coolant channel 5, a low heat conducting section 55 having a heat conductivity smaller than that at a downstream side of a coolant C is formed at an inlet side of the coolant C.

The invention relates to a test table for testing the security of a hydrogen supply system of a fuel cell bus and the test method thereof, and belongs to the security technology field of the fuel cell bus. The test table comprises a hydrogen supply system simulation device, a main control computer, an electrical control cabinet, a high pressure hydrogen bottle and a hydrogen detector, wherein the hydrogen supply system simulation device is connected with the output mouth of the high pressure hydrogen bottle, and bilaterally connected with the main control computer; the main control computer is connected with the electrical control cabinet, the high pressure hydrogen bottle and the hydrogen detector; the electrical control cabinet is respectively connected with the high pressure hydrogen bottle and the hydrogen supply system simulation device; the test table further comprises a bench for fixing and supporting the hydrogen supply system simulation device. The method comprises the following steps: a valve to be tested is connected with an identical valve in a pipeline of the hydrogen supply system simulation device in parallel; the working state of the valve to be tested is simulated; according to data such as gas pressure, flow, hydrogen concentration, etc. in an acquisition pipeline, whether the performance of the valve to be tested is qualified can be judged. The test table is used for dynamically testing the security of the key components of hydrogen supply system of the fuel cell bus.

The invention relates a concentration diluting device used for hydrogen discharged by a fuel cell passenger car, pertaining to the field of application technology of the fuel cell passenger car; the device comprises a photoelectric receiver, a photoelectric proximity switch, an electric fan, two static-free meshes, a hydrogen piping, a main body of the diluting device, a plurality of baffle plates, an electromagnetic valve and a fault detector of the electric fan. The main body of the diluting device is a body case with an opening on both ends; the two static-free meshes are connected with the inner walls on the both ends of the main body of the diluting device; the photoelectric receiver is arranged on the central shaft of the motor of the electric fan; the photoelectric proximity switch is arranged on the body case of the electric fan and connected with the fault detector of the electric fan; the hydrogen piping is communicated with the hydrogen inlet of the air inlet end of the main body of the diluting device and connected with a discharged hydrogen pipe by the electromagnetic valve. Under various working conditions of the passenger car, the device is capable of reducing the concentration of Purge to the safety level and has the advantages of small volume, compact structure, safety and reliability.

The present invention intends to provide a fuel cell being capable of preventing the methanol crossover in a simple and easy manner and being excellent in fuel utilization rate and the like. A fuel cell 30 of the present invention includes a polymer electrolyte membrane 11, an anode 23 and a cathode 25 sandwiching the polymer electrolyte membrane 11, an anode-side separator 17 having a fuel flow channel, a cathode-side separator 21 having an oxidant flow channel, and gaskets 26 and 27 interposed between the anode-side and cathode-side separators 17 and 21 and the periphery of the polymer electrolyte membrane 11. In the fuel cell 30, the orthographic projection area of the anode catalyst layer 31 included in the anode 23 seen from the direction normal to an MEA is set to be larger than the orthographic projection area of the anode porous substrate 15 included in the anode 23 seen from the direction normal to the MEA.

The invention discloses a fuel cell. The fuel cell comprises a box body, a box cover, a galvanic pile module, a hydrogen gas circulation pump, an air path system, a cooling system, a fuel cell controlsystem, a ventilation part and a hydrogen feeding integrated manifold, wherein the galvanic pile module occupies a position at one side of a first cavity of the box body; the fuel cell control systemis arranged above the galvanic pile module; a hydrogen gas inlet valve, an air inlet valve, a cooling liquid inlet valve, the hydrogen gas circulating, a hydrogen gas outlet valve, an air outlet valve and a cooling liquid outlet valve are distributed at the position of the other side of the first cavity of the box body; an opening is formed in one side face of the box body and an exhausting opening is formed in a side face of the box body at one opposite side of the opening; the ventilation part is mounted at the opening; the air path system and the cooling system are mounted on a first bottom plate at the outer side of the box body; the fuel cell disclosed by the invention is reasonable in layout, compact in structure and simple in finished product assembling; the cost is relatively lowand the quality is effectively controlled.

A cell unit of a fuel cell includes a first separator, a first membrane electrode assembly, a second separator, a second membrane electrode assembly, and a third separator. Resin connecting sections are provided in the outer circumferential ends of the first separator, the second separator, and the third separator. A coupling pin is molded integrally with the resin connecting section of the first separator. A first hole and a second hole are formed on both sides of the coupling pin for selectively inserting a rebuilt pin into either of the first and second holes. A hole for inserting the coupling pin is formed at the center, and the first hole and the second hole are formed on both sides of the hole, in each of the resin connecting sections of the second and third separators.

There is provided a fuel cell having a seal structure that has high gas sealability and, further, is capable of supplying gas to a membrane electrode assembly without being path-cut even if there are conventional processing errors (variations) in the gasket. With respect to a gasket 5 provided at the periphery of the membrane electrode assembly, a first seal protrusion 51 is formed around a manifold 6. A notch 31 is formed at an end portion of a gas flow path layer 3. An end portion of the gasket 5 blocks the notch 31 and has at least one second seal protrusion 52 protruding from the surface of the gas flow path layer 3 and having a height of the same level as or less than the first seal protrusion 51. A separator 4 is in contact with the gas flow path layer 3 in a posture where the first seal protrusion 51 and the second seal protrusion 52 are compressed. At least one linear seal structure is formed by the second seal protrusion 52 and the separator 4.

A separator has a concavo-convex structure formed in mutually reversed shapes on two opposite sides thereof to define flow paths of different fluids on the respective two sides. The concavo-convex structure includes multiple first projections formed and protruded on one side of the two opposite sides and arranged at intervals having a preset regularity. The concavo-convex structure also includes multiple second projections formed and protruded on the other side of the two opposite sides in a specific area corresponding to an area for formation of the multiple first projections on the one side and arranged at intervals having a preset regularity. The concavo-convex structure further includes reinforcing elements protruded on the one side. Each of the reinforcing elements is formed as a convex in a specific shape of connecting multiple positions where the first projections are expected to be formed according to the preset regularity, while avoiding positions corresponding to the second projections formed on the other side. This arrangement effectively prevents a potential trouble caused by deformation of the separator due to a pressure difference between the flow pressures of the respective fluids flowing on the respective sides of the separator.

A cell stack of fuel cells is provided with: a cell stack body (50) having a stack of cells (20), an elastic member (33) arranged at the end of a cell (10) of the stack of cells (20) in the stacking direction, and a pair of end plates (34, 34) which sandwich the stack of cells (20) and the elastic member (33); and with a fastening band (80) which has a first band engaging section (68) and a second band engaging section (78) on both end sections and which extends around the cell stack body (50) so as to cover the pair of side surfaces facing the pair of entire end surfaces of the cell stack body (50). The cell stack body (50) is fastened by means of the fastening band (80) by direct or indirect engagement of the first band engaging section (68) and the second band engaging section (78).

Even when a temperature is lowered, a temperature of a fuel cell is raised, thereby improving the availability. In a fuel cell 1311, a combustion unit 1303 is provided in contact with a unit cell structure 101. In addition, a fuel tank 1309 is provided in contact with a fuel electrode 102 constituting the unit cell structure 101 and supplies a fuel 124 to the fuel electrode 102 directly. A part of the fuel 124 is supplied to the combustion unit 1303 from an combustion fuel discharging exit 1315 provided in the fuel tank 1309 via a combustion fuel supply pipe 1313.

The invention provides an insulation monitoring control system and method for a fuel cell passenger vehicle, and the vehicle. The insulation monitoring control system comprises a fuel cell module, anauxiliary power battery module, a non-isolated boost DCDC, insulation monitoring modules, a vehicle load and a controller; the auxiliary power battery module is directly used for supplying power to the vehicle load; the non-isolated boost DCDC is used for converting low-voltage platform power emitted by the fuel cell module to high-voltage platform power to be supplied to the vehicle load; the insulation monitoring modules comprise the first insulation monitoring module and the second insulation monitoring module, wherein the first insulation monitoring module is used for insulation monitoringof an input front end circuit of the non-isolated boost DCDC, and the second insulation monitoring module is used for insulation monitoring of an output rear end circuit of the non-isolated boost DCDC; and the controller is used for data communication with all the modules. The problem that the insulation monitoring standards of the fuel cell vehicle adopting the non-isolated boost DCDC are inconsistent, and consequently vehicle operation abnormity is caused is solved.

The invention relates to a control method and device of a vehicle-mounted hydrogen system and the vehicle-mounted hydrogen system, and belongs to the field of fuel cell buses. The method comprises: establishing a pressure prediction model of an output gas of the vehicle-mounted hydrogen system, and determining a pressure prediction value used for controlling the pressure of the output gas of the vehicle-mounted hydrogen system according to the pressure prediction model; calculating a difference value between the pressure prediction value and a set target pressure value to obtain a prediction error; obtaining an actual pressure value of output gas of the vehicle-mounted hydrogen system, and calculating a difference value between the actual pressure value and the target pressure value to obtain an actual error; and comparing the prediction error with the actual error, and when the prediction error is smaller than the actual error, outputting a pressure prediction value of the next momentby using the pressure prediction model as a target pressure of the next moment to control the vehicle-mounted hydrogen system to output gas. The change trend of the output pressure of the vehicle-mounted hydrogen system is judged in advance, and the pressure of the output gas of the vehicle-mounted hydrogen system is adjusted in advance, so that the supplied hydrogen can meet the requirements ofa fuel cell system.

Provided are a fuel cell that employs a fuel-electrode collector excellent in terms of thermal conductivity and the like, so that it is excellent in terms of power generation efficiency and cost effectiveness; and a method for operating the fuel cell. Included are a membrane electrode assembly (MEA), a fuel-electrode collector that is a porous metal body disposed in contact with a fuel electrode and performing current collection,and a heating device operated by electric power, wherein a solid electrolyte is a proton-permeable electrolyte, a fuel-gas channel is provided to cause a fuel gas to pass through the fuel-electrode collector, and the porous metal body constituting the fuel-electrode collector is formed of aluminum or aluminum alloy.

The invention provides a fuel cell comprising one or more cells (102) stacked therein, each of the cells (102) including:

• • an MEA (4) having a polymer electrolyte membrane (7) and a pair of gas diffusion layers (5) sandwiching the polymer electrolyte membrane (7) except a peripheral region of the polymer electrolyte membrane (7); and
  • a pair of self-sealing separators (1) disposed so as to sandwich the MEA (4), each of the self-sealing separators (1) being formed in a plate-like shape as a whole and composed of a separating part (41) having electrical conductivity and a sealing part (40) having more elasticity than the separating part (41), at least the separating part (41) being in contact with an associated one of the gas diffusion layers (5), the sealing part (40) being in contact with the peripheral region of the polymer electrolyte membrane (7) so as to enclose the associated one of the gas diffusion layers (5),
  • wherein each self-sealing separator (1) has a lower area (11) for accommodating a raised portion (51) formed on the periphery of the outer surface of the associated gas diffusion layer (5) and the sealing part (40) is disposed within the lower area (11).

A fuel cell is provided with a membrane electrode assembly provided with a frame, both of which are sandwiched between two separators. The fuel cell is configured such that reactive gas is circulated between the frame and the separators. The frame and both separators each have manifold holes, the rims of the manifold holes of frame extend into the manifold holes in the separators, and protrusions cover the inner peripheral surfaces of the manifold holes in at least one of the separators. This structure makes possible the easy and accurate position and integration of the separators and the frame, and fuel cell miniaturization can be achieved because space to position the protrusions is not needed.

The invention provides a fuel cell. The fuel cell comprises: a plurality of fuel cell stacks; an oxygen supply path, used for supplying oxidant gas to a power generation unit; and a hydrogen supply path, used for supplying fuel gas to the power generation unit. The pore diameters of micropores of a microporous water and oxygen humidification electrode plate and a microporous hydrogen humidification electrode plate are controlled to be 0.4-0.8 microns. The fuel cell further comprises a group of manifold channels, wherein the manifold channels are formed between a hydrogen flow channel and through holes of an oxygen flow field plate; one part of manifolds supply hydrogen among the through holes of the oxygen flow field plate; and the other part of manifolds circulate substances in the channels by a pressure sensor. According to the fuel cell, the energy output density of the fuel cell is increased on the premise of not increasing the size of the channel.

The invention relates to a power-on control protection system of a fuel cell bus. The system comprises a VCU, an FCU, pre-charging loops, a high-voltage contactor, a hydrogen concentration sensor, a display screen and an alarm, wherein the pre-charging loops are connected with the analog quantity output end of the VCU; two pre-charging loops are provided; each group comprises two branches which are connected in parallel; the first branch in the first group comprises a fuel cell relay; the second branch in the first group comprises a pre-charging resistor and a fuel cell pre-charging relay connected with the pre-charging resistor in series; the first branch in the second group is a main positive relay; the second branch in the second group comprises a pre-charging resistor and an electric control pre-charging relay connected with the pre-charging resistor in series; and the pre-charging resistor is shared by the two pre-charging loops. Compared with the prior art, it is ensured throughpower-on protection that the fuel cell bus cannot be powered on by high voltage when hydrogen leaks, so that the driving safety is improved, meanwhile, a pure electric system can work normally, and the error-tolerant rate and the customer experience are improved.

A fuel cell (100) capable of improving durability is provided. The fuel cell includes an electrolyte membrane (1), catalyst layers (2a, 2b) stacked on both sides of the electrolyte membrane (1), respectively, and diffusion layers (3a, 3b) stacked outside of the respective catalyst layers (2a, 2b). A stacked surface of each of the catalyst layers (2a, 2b) is smaller than a stacked surface of the electrolyte membrane (1), and a stacked surface of each of the diffusion layers (3a, 3b) is larger than the stacked surface of each of the catalyst layers (2a, 2b) and smaller than the stacked surface of the electrolyte membrane (1). If a surface of the electrolyte membrane (1) which surface is to contact with one of the catalyst layers (2a, 2b) is A1 and a surface of the electrolyte membrane (1) which surface is out of contact with one of the catalyst layers (2a, 2b) and on which a space is formed between the electrolyte membrane (1) and one of the diffusion layer is A2, the surface A2 contains a single metal element having a hydrogen-peroxide decomposing performance and/or a compound containing the single metal element.

A fuel cell including at least one single cell C having an electrolyte 3, a fuel electrode 5, and an air electrode 7, wherein the single cell C is supported on a substrate 1 and the electrolyte 3 is disposed on a first surface of the substrate 1, with the fuel electrode 5 and the air electrode 7 disposed on the first surface of the substrate 1 so as to sandwich the electrolyte 3.

A polymer electrolyte fuel cell includes a cell stack (51) formed by stacking cells (11), each of which includes: an MEA (5) having a polymer electrolyte membrane (1), and an anode (4a) and a cathode (4b) sandwiching the polymer electrolyte membrane (1); and an anode separator (6a) and a cathode separator (6b) disposed to sandwich the MEA (5), an anode gas internal supplying channel is formed to supply a fuel gas and air to the anode (4a), and a CO removing catalyst layer (61) containing a CO removing catalyst is formed in the anode gas internal supplying channel.