9369 results about "Fuel cells" patented technology

The invention discloses a fuel cell hydrogen circulation cooling integrated system, and relates to the technical field of fuel cells, the fuel cell hydrogen circulation cooling integrated system comprises a hydrogen circulation cooling management center, the hydrogen circulation cooling management center is in communication connection with the following modules: a multi-source state sensing module, which is used for collecting multi-dimensional state data of a hydrogen circulation-cooling system in real time, extracting state characteristics, and sending the state characteristics to a control module; and forming a state feature sequence table. The multi-dimensional state data of the hydrogen circulation-cooling system is collected, the dynamic cooperative control strategy of the reinforcement learning decision module is combined, the precision and stability of temperature control are remarkably improved, the Markov decision process model is used for predicting the instantaneous heat production change caused by load sudden change, and the stability of the system is improved. And through combined adjustment of hydrogen circulation and a cooling system, temperature fluctuation is rapidly restrained, compared with traditional PID control, the temperature overshoot is reduced under the dynamic working condition, it is ensured that the galvanic pile works within the optimal temperature range all the time, the service life of the galvanic pile is prolonged, and the energy conversion efficiency is improved.

The invention relates to a membrane stack (9) for an air humidifier (1) of a fuel cell for humidifying a dry supply air stream (2) of the fuel cell by means of a moist exhaust air stream (3) of the fuel cell, - wherein the membrane stack (9) is configured in a cuboid shape, has a stacking direction (S) and four stacking sides (10) perpendicular to the stacking direction (S), - wherein the membrane stack (9) has a vertical direction (Z) parallel to the stacking direction (S), a longitudinal direction (X) perpendicular to the vertical direction (Z) and a transverse direction (Y) perpendicular to the vertical direction (Z) and perpendicular to the longitudinal direction (X), - wherein the four stack sides (10) form an air supply inlet (ZE) and an air supply outlet (ZA) facing away from each other in the longitudinal direction (X), and an exhaust air inlet (AE) and an exhaust air outlet (AA) facing away from each other in the transverse direction (Y), - wherein the membrane stack (9) comprises several membranes (11) which are permeable to moisture and impermeable to air and which follow one another in the stacking direction (S) such that the membranes (11) within the membrane stack (9) each separate a supply air path (ZP) connecting the supply air inlet (ZE) to the supply air outlet (ZA) from an exhaust air path (AP) connecting the exhaust air inlet (AE) to the exhaust air outlet (AA). Improved functional reliability can be achieved by having the membrane stack (9) have several spacers (12) which are arranged in the stacking direction (S) between two immediately successive membranes (11) in one of the exhaust air paths (AP).

The invention discloses a hydrogen concentration sensor site selection optimization method and equipment for a fuel cell vehicle. The vehicle simulation model is established according to the structure of the target fuel cell vehicle, and the plurality of hydrogen concentration monitoring points are set to construct the database, so that the distribution condition of the hydrogen concentration in the vehicle can be comprehensively and accurately known, and the accuracy of fuel cell hydrogen leakage detection is improved. The particle swarm optimization algorithm is adopted to optimize initial arrangement, and the optimal scheme of sensor arrangement can be realized, sensor redundancy can be reduced, arrangement cost can be reduced, hydrogen leakage detection time can be shortened, and detection efficiency can be improved in combination with an objective function and constraint conditions on the premise of meeting detection requirements. According to the method, the dependence on traditional experience site selection is reduced, the problems of inaccurate detection, cost waste and the like caused by insufficient experience or misjudgment are avoided, the stability and the reliability of the hydrogen leakage detection system of the fuel cell vehicle are enhanced, and the safety of the fuel cell in the vehicle is effectively guaranteed.

The present disclosure relates to a field of a fuel cell test, and in particular, to a method and an apparatus for optimizing design based on performance evaluation of a gas diffusion layer of a fuel cell. The method includes: determining an overall porosity of the gas diffusion layer of the fuel cell according to production requirements, and obtaining a plurality of porosity structures with the overall porosity; obtaining performance evaluation indexes of the gas diffusion layer of the fuel cell, and constructing a performance evaluation system for the gas diffusion layer of the fuel cell; calculating, with reference to evaluation functions and index weight ratios, performance comprehensive scores of the plurality of porosity structures in the performance evaluation system of the gas diffusion layer of the fuel cell; determining an optimal design scheme in the plurality of porosity structures according to the performance comprehensive scores.

The invention relates to the technical field of battery thermal management, in particular to a liquid-cooled fuel cell thermal management subsystem and a control method thereof.The liquid-cooled fuel cell thermal management subsystem comprises a fuel cell body, a cooling liquid circulation system, a temperature sensor, a flow sensor and a thermal management system controller; the heat management system controller is electrically connected with the temperature sensor, the flow sensor, the water pump, the radiator, the heater and the control valve, calculates the pile temperature of the fuel cell main body through load current, and continuously monitors the inlet temperature and the outlet temperature of the fuel cell main body and the outlet flow of the water pump at the same time; and the working state of the cooling liquid circulation system is controlled according to the monitored and calculated data, so that the temperature of the fuel cell main body is accurately controlled.

The invention discloses a fuel cell vehicle thermal management system and a construction method thereof, and the fuel cell vehicle thermal management system comprises a thermodynamic modeling module, a double-layer fuzzy sliding mode controller, an actuator cooperative control module, a working condition adaptive module and a fault protection module. According to the thermal management system of the fuel cell vehicle and the construction method of the thermal management system, the dynamic thermodynamic model is established, and the double-layer fuzzy sliding mode controller and the actuator cooperative control module are designed, so that millisecond-level high-precision tracking of the temperature of the electric pile and online real-time compensation of unknown disturbance are realized; meanwhile, stable operation of the system in the whole working condition domain range can be ensured through the working condition self-adaption module and the fault protection module, and the system has the advantages of being high in control precision, high in anti-interference capacity and good in system reliability.

The invention discloses a bipolar plate structure optimization method and system based on flow field data analysis, and relates to the technical field of fuel cells. The method comprises the following steps: establishing a parameterized bipolar plate runner geometric solid model; performing compression deformation simulation of a gas diffusion layer on the bipolar plate flow channel geometric solid model to obtain physical field data of the gas diffusion layer, and calculating a porosity distribution field and a local mass transfer impedance coefficient field based on the physical field data; based on the porosity distribution field and the local mass transfer impedance coefficient field, multi-physics field coupling simulation is carried out, and a local performance contribution degree field is obtained; constructing a comprehensive loss function according to the local mass transfer impedance coefficient field and the local performance contribution degree field; and with the purpose of minimizing the comprehensive loss function, iterative optimization is carried out on the design variables through an optimization algorithm until convergence conditions are met, and an optimal design variable combination is output. Through parametric modeling, multi-physics field coupling simulation and comprehensive loss function evaluation, efficient optimization of the bipolar plate design is realized.

The invention relates to the technical field of fuel cells, in particular to a hydrogen cell water-gas separation device for an unmanned aerial vehicle, which comprises a separation shell, and a cyclone separation cavity, a heat exchange condensation cavity and a hydrogen mixing cavity which are sequentially distributed from bottom to top are arranged in the separation shell. The technical problem that a traditional gas-liquid separator cannot thoroughly remove micron-sized liquid drops is solved, liquid water drops are efficiently removed through the cyclone separation cavity, new hydrogen and wet hydrogen are subjected to heat exchange through the heat exchange condensation cavity, residual liquid drops are sufficiently condensed and separated out, and finally mixed hydrogen with the dryness meeting the requirement is output. And the anode flooding problem of the fuel cell is effectively avoided.

The invention relates to the technical field of fuel cells, in particular to a method and system for accurately controlling the hydrogen stoichiometric ratio of a fuel cell, and the method comprises the steps: firstly, obtaining a quantitative anode health state value through a fusion calculation model by collecting load current, anode inlet and outlet pressure, temperature, high-frequency resistance and other multi-source signals in real time; a feed-forward model based on a load current change rate predicts sudden change of hydrogen demand, and an optimal hydrogen flow instruction is jointly generated in combination with output of a PID controller which adaptively adjusts parameters according to a health state value. According to the method, the integrated diagnosis parameter, namely the anode health state value, is created, so that the internal state of the fuel cell can be accurately perceived and prospectively judged. Through deep fusion of multi-source heterogeneous information such as high-frequency resistance, anode pressure difference, current and temperature, a comprehensive index capable of comprehensively and quantitatively reflecting anode water content, gas concentration and runner smoothness is generated.

The invention discloses a fuel cell flow channel-electrode coupling design and attenuation optimization method based on machine learning, and the method employs a machine learning algorithm to construct a data driving model based on a fuel cell physical model, and achieves the rapid prediction and feature quantitative analysis of the performances of a cell under different flow field and electrode coupling structures. A gradient descent algorithm is further combined, multi-target and multi-parameter flow field structure optimization is carried out, key parameters in the reaction process are accurately regulated and controlled, and the stability and long-term performance of the fuel cell are improved. According to the method, coupling comprehensive optimization can be accurately and comprehensively carried out on the runner and electrode parameters, and a multi-target comprehensive optimization result which is difficult to realize by a traditional optimization method is obtained. By locally regulating and controlling flow field parameters and optimizing reactant concentration uniformity, substance exchange efficiency and temperature and humidity control, attenuation of the fuel cell is effectively improved, and the overall performance of the fuel cell is improved.

The present invention relates to an aircraft propulsion system (100) comprising: a fuel cell arrangement comprising at least one fuel cell (110); an air source (130) for providing air to the fuel cell arrangement; a compressor arrangement comprising a first compressor (120) in fluid communication with the air source and a fuel cell of the fuel cell arrangement; and, a turbine arrangement comprising a first turbine (124) mechanically coupled to the first compressor, wherein the first turbine is in fluid communication with the at least one fuel cell (110), the system being arranged so that, in use, air from the air source (130) flows in turn to the first compressor (120), the fuel cell arrangement and the first turbine (124).

The invention discloses a fuel cell heat and humidity integrated management system and an evaporation phase change cooling method thereof, and belongs to the technical field of fuel cell heat management. The system comprises an air cooling and humidifying module, a heat dissipation, evaporation and phase change module and a water recovery and distribution module. The air cooling and humidifying module distributes compressed air to an ultrasonic atomizing nozzle to be mixed with atomized water, and cooling and humidifying of main path air are achieved. The heat dissipation evaporation phase change module sprays atomized water to the surfaces of ATS radiator fins, and heat dissipation is enhanced through evaporation phase change. And the water recovery and distribution module recovers moisture in wet air at an electric pile outlet through condensation and intelligently distributes the moisture to the two atomization systems. A traditional intercooler and a traditional membrane humidifier are omitted, the air flow resistance is reduced by 15-20%, the heat dissipation efficiency is improved by 10% or above, the weight of the system is reduced by 8%, closed-loop utilization of reaction water is achieved, and the system is particularly suitable for fuel cell systems of mobile carriers such as vehicles and unmanned aerial vehicles.

The invention discloses a parallel converter cooperative grid-connected control method and device based on a fuel cell power generation grid-connected system, and the method comprises the steps: generating a PWM drive signal of a converter through employing a droop control strategy and a sliding mode control strategy when the converter of each power generation unit operates; operating data of each power generation unit and the health state of the fuel cell are collected in real time, information interaction data of adjacent power generation units are combined, and voltage and frequency compensation values of each power generation unit are calculated and used for conducting primary correction on the PWM driving signal; the amplitude deviation between the frequency, the voltage and the phase angle at the common coupling point of the alternating current bus of the power grid and each power generation unit is obtained in real time, a trigger instruction used for controlling switching of a grid-connected mode and an island mode is generated based on the deviation, and a synchronization item is generated based on the deviation in the grid-connected mode and used for conducting secondary correction on the PWM driving signal. The method can improve the stability and operation efficiency of the system, and ensures that the system is stably switched between the grid-connected mode and the island mode.

A refuse vehicle includes a chassis. The chassis includes a right frame member and a left frame member spaced apart in a lateral direction and extending lengthwise in a longitudinal direction, the right frame member being separate from the left frame member. The refuse vehicle further includes a body supported by the right frame member and the left frame member, the body defining a refuse compartment, and a hydrogen power system including a plurality of fuel cells longitudinally disposed along the chassis, positioned between the right frame member and the left frame member. The hydrogen power system may also include plurality of fuel pods for providing hydrogen to the fuel cells. The hydrogen power system can be packaged in modular pods on various locations of the refuse vehicle. The hydrogen power system can work in conjunction with other power sources or fuels (e.g., electric batteries, ultra-capacitors, diesel ICE, CNG, etc.).

The invention belongs to the field of power system operation and control, and particularly relates to an operation control method for a wind-light hydrogen storage multi-energy complementary system, which comprises the following steps: performing empirical mode decomposition on an original output sequence to obtain an IMF component, training parameters by combining a hidden Markov chain model and a forward-backward algorithm and solving an optimal state sequence, and fusing a predicted value by using Bayesian estimation to obtain an optimal state sequence; outputting a wind and light output and load demand global prediction value; by taking the minimum comprehensive operation cost, the minimum carbon emission intensity and the minimum power supply shortage rate as targets, obtaining equipment, power balance and hydrogen storage capacity constraints through a constraint verification algorithm, and constructing a multi-target optimization model; a scene trigger function identifies four types of typical scenes, a chaos particle swarm optimization algorithm is improved to solve a model, and density peak clustering is carried out to obtain a global scheduling scheme containing output of an electrolytic cell and a fuel cell and energy storage charge and discharge power. According to the invention, through scene adaptive optimization and intelligent clustering screening, the randomness and volatility of wind and light output are dealt with.

A flow field assembly for a fuel cell includes a flow field plate and a sealing member. A sealing member is disposed on the first side of the flow field plate and defines at least one bypass channel. The at least one bypass channel is configured to partially divert the reaction fluid from the inlet port of the flow field plate into a selected region of the reaction zone to cause the diverted portion of the reaction fluid to mix with the undiverted portion of the reaction fluid in the selected region such that the diverted portion of the reaction fluid is less than the undiverted portion of the reaction fluid in the selected region than in the absence of the at least one bypass channel. And the distribution uniformity of the reaction fluid on the reaction area is improved. The utility model also provides a fuel cell unit comprising the flow field assembly. According to the flow field assembly provided by the invention, the distribution uniformity of the current density can be improved by improving the distribution uniformity of the reaction fluid on the reaction region, so that reliable and efficient operation of the fuel cell unit is ensured.

The invention discloses a fuel cell vehicle control method integrating fault diagnosis and energy management. According to the method, vehicle key operation parameters are collected in real time, a whole vehicle operation state vector is constructed, and fuel cell health diagnosis and preliminary power action generation are carried out at the same time based on the state vector. The diagnosis module obtains a health factor and a severity index through residual calculation, particle filtering and generalized likelihood ratio test, and the action generation module outputs an intelligent agent power distribution vector. And according to the severity index, the dynamic reconstruction power, the SOC and the power change rate constraint, optimal power distribution is obtained through optimization solution, and meanwhile, a high-severity state is intervened in combination with a hierarchical fault-tolerant strategy. The method also comprises a demand power prediction and online learning module which is used for improving the robustness and the adaptive capability of the optimization strategy. According to the invention, by tightly combining the health state of the fuel cell with energy management optimization, high-energy-efficiency, long-service-life and reliable dynamic control of the fuel cell system is realized.

The invention discloses a hydrothermal management system and method of a fuel cell and a fuel cell system. A cooling water circulation subsystem comprises a water inlet pipeline, a water outlet pipeline and a circulation module; the circulating module is used for controlling the cooling water to circularly flow in the fuel cell; the hydrothermal control subsystem comprises a control module, a power supply module, a temperature adjusting module and a signal acquisition module; the power module is used for providing electric signals for the temperature adjusting module. The temperature adjusting module is used for adjusting the temperature in the fuel cell according to the power supply signal; the signal acquisition module is used for acquiring the water inlet temperature, the water outlet temperature and the battery plate temperature of the fuel cell; the control module is used for acquiring the temperature of the water inlet, the temperature of the water outlet and the temperature of the battery pole plate in real time, controlling the working state of the circulation module and controlling a power supply signal provided by the power supply module to the temperature regulation module, and the scheme realizes accurate regulation and control of the temperature of the fuel cell, improves the output performance of the fuel cell and prolongs the service life of the fuel cell.

The invention relates to the technical field of airborne fuel cells, in particular to an airborne fuel cell system and a control method. The airborne fuel cell system comprises an electric pile power generation assembly, an air pressurization assembly, a hydrogen conveying assembly and an evaporative cooling assembly. And the air supercharging assembly is communicated with a cathode inlet of the electric pile power generation assembly. And the hydrogen conveying assembly is communicated with an anode inlet of the electric pile power generation assembly. The evaporative cooling assembly comprises a cooling pump, a humidifying unit, a first gas-water separator and a water storage tank, an electrode water drainage and exhaust port of the galvanic pile power generation assembly is communicated with an inlet of the first gas-water separator, and a water outlet of the first gas-water separator is communicated with the water storage tank. An inlet of the cooling pump communicates with the water storage tank, an outlet of the cooling pump communicates with the humidification unit, and the humidification unit communicates with an outlet of the air pressurization assembly. Therefore, the problems that the thermal management scheme of the airborne fuel cell is difficult to cover the whole flight envelope and the working temperature area of the fuel cell is narrow are solved.

The invention relates to the technical field of unmanned aerial vehicle power systems, in particular to a low-altitude unmanned aerial vehicle hydrogen-electricity hybrid energy management system and control device.According to the low-altitude unmanned aerial vehicle hydrogen-electricity hybrid energy management system and control device, the residual hydrogen amount can be accurately quantified through combined collection and fusion calculation of hydrogen flow signals and air pressure signals; and the opening state of the proportional valve and the air inlet valve is adjusted in real time under data driving, so that the hydrogen input is matched with the actual power requirement, the voltage, the current and the temperature are synchronously monitored, and fluctuation feature extraction and life parameter calibration are performed on a power output sequence. The operation health degree and the life loss trend of the fuel cell can be dynamically obtained before power distribution, an accurate reference basis is provided for follow-up power allocation, the internal resistance change trend is measured and calculated through voltage and current sampling, and dynamic adjustment of the charge-discharge depth and charge-discharge process parameters is carried out in combination with the health degree. And the usability and the load capacity of the lithium battery are accurately represented.

The utility model discloses a forklift fuel cell system and relates to the field of fuel cells. Comprising a fuel cell system module, a solid-state metal hydrogen storage module and a power cell module, and the fuel cell system module, the solid-state metal hydrogen storage module and the power cell module are all fixed in a forklift box body. According to the utility model, the whole system is divided into three modules, namely the fuel cell system module, the solid metal hydrogen storage module and the power cell module which are mutually independent, clear in boundary and free from mutual influence, so that the whole system can simultaneously take into account a solid metal hydrogen storage form and a gas hydrogen storage bottle form, and meanwhile, the power cell can also take into account various sizes and specifications; therefore, the whole system has a plurality of integration modes and a plurality of application scenes, and the extension and application range is wide.

The invention provides a hydrogen leakage identification method for a hydrogen storage cabin of a fuel cell vehicle based on data driving, leakage identification electronic equipment and a storage medium, relates to the technical field of fault monitoring and diagnosis of a fuel cell system, and solves the technical problems of low identification precision and poor real-time performance under the working conditions of a closed environment and multiple leakage factors in the prior art. According to the technical scheme, the method is characterized in that a leakage data set covering multiple working conditions is constructed through simulation; performing sliding window segmentation and standardized preprocessing on the data; extracting multi-scale features of the leakage time sequence by using a time sequence convolutional network; enhancing the key time sequence features by using a multi-head self-attention mechanism; carrying out pooling dimension reduction on the enhanced features; and inputting the compressed feature vector into an XGBoost classifier to realize multi-label identification of the leakage level and the leakage position. According to the method, time sequence modeling, an attention mechanism and an integrated classifier are fused, and the accuracy, robustness and real-time performance of hydrogen leakage recognition under complex working conditions are remarkably improved.

The invention discloses a fuel cell cathode catalyst and a preparation method thereof, and belongs to the technical field of fuel cells. The preparation method of the fuel cell cathode catalyst comprises the following steps: adding a modified multi-walled carbon nanotube into a chloroplatinic acid aqueous solution with the mass concentration of 5g / L, carrying out ultrasonic treatment at 30-50 DEG C for 1-2 hours, and then carrying out freeze drying; and putting the dry powder into a horizontal tube furnace, introducing inert gas as protective gas, heating to 450-500 DEG C, preserving heat for 1 hour, cooling to room temperature along with the furnace, and taking out to obtain the fuel cell cathode catalyst. The modified multi-walled carbon nanotube is MWCNT / PEI / 5-formyl-2-thiopheneboronic acid, and the 5-formyl-2-thiopheneboronic acid is grafted after the PEI is grafted on the surface of the MWCNT, so that the dispersity of the MWCNT can be obviously improved, the agglomeration phenomenon of the MWCNT is reduced, the dispersion is more uniform, the loading capacity of platinum is high, the electrocatalytic activity of the catalyst is obviously enhanced, and the dosage of platinum is reduced.

The invention relates to the technical field of fuel cells of hydrogen energy unmanned aerial vehicles, in particular to a power balance method and system of a fuel cell system for a hydrogen energy unmanned aerial vehicle, and the method comprises the steps: calculating the power balance of the fuel cell system for the hydrogen energy unmanned aerial vehicle based on the real-time state of a lithium battery, the current flight working condition of the unmanned aerial vehicle and the efficiency characteristic of the fuel cell; dynamically setting a target charging current of the lithium battery; obtaining a deviation value based on the actual charging current of the lithium battery and the target charging current; the PID controller generates a control signal, adjusts the reaction rate of the fuel cell, and changes the output current of the fuel cell, so that the actual charging current of the lithium battery works with the target charging current as the reference; power balance between the fuel cell and the lithium battery can be effectively achieved, the stability, reliability and system efficiency of the unmanned aerial vehicle power system are improved, meanwhile, the fault handling capacity is achieved, and normal flight of the unmanned aerial vehicle under various conditions is guaranteed.

The invention belongs to the technical field of battery detection, and particularly discloses a fuel cell performance evaluation method, system and device and a medium, and the method comprises the steps: collecting the multi-source feature data of a to-be-detected fuel cell in real time; carrying out preprocessing on the multi-source feature data; inputting the preprocessed multi-source characteristic data into an electrochemical-thermodynamic coupling model, and calculating to obtain an activation polarization voltage, an ohmic loss voltage and a concentration polarization voltage; and inputting the multi-modal input features into a pre-trained fuel cell performance health state evaluation model to evaluate the health state index and the remaining service life of the fuel cell to be tested. The accuracy of fuel cell health state and service life detection can be improved.

The invention relates to the technical field of new energy materials, and discloses a gradient porous three-dimensional interpenetrating network direct ammonia fuel cell membrane electrode. The gradient porous three-dimensional interpenetrating network direct ammonia fuel cell membrane electrode comprises an exchange membrane, an anode catalyst layer, a cathode catalyst layer and a gas diffusion layer, wherein the anode catalyst layer and the cathode catalyst layer have gradient pore size distribution from the exchange membrane side to the gas diffusion layer side; wherein the interiors of the anode catalyst layer and the cathode catalyst layer are provided with three-dimensional interpenetrating network structures. According to the invention, the utilization rate of the catalyst is improved by 30-50%, the mass transfer resistance is reduced by 40-60%, the interface contact is improved, the controllability of the preparation process is improved, the structural stability is enhanced, the power density of the direct ammonia fuel cell reaches 250-300mW / cm < 2 >, the performance retention rate after 5000 cycles can reach 85% or more, and the method has remarkable technical advantages and application prospects.

The utility model discloses a fuel cell tractor, and relates to the technical field of vehicles. The fuel cell tractor comprises a frame, a cab and a hydrogen cylinder, the cab and the hydrogen cylinder are arranged above the frame, the hydrogen cylinder is arranged behind the cab, a driving system, a fuel cell engine and a power cell module are arranged at the bottom of the frame, the fuel cell engine, the power cell module and the driving system are electrically connected in sequence, and the hydrogen cylinder transmits hydrogen to the fuel cell engine. The fuel cell engine converts hydrogen into electric energy and transmits the electric energy to the power cell module, the power cell module transmits the electric energy to the driving system, a fuel cell cooling system is arranged above the hydrogen bottle, and the fuel cell cooling system dissipates heat of the fuel cell engine. The chassis layout of the fuel cell tractor can be simplified.

To disclose a fuel cell hybrid electric vehicle thermal management control method, relating to a technical field of fuel cell hybrid electric vehicle thermal management.SOLUTION: A thermal management control method for a fuel cell hybrid electric vehicle optimizes a flow of coolant liquid using an MPC in a multi-input multi-output complex nonlinear system of the fuel cell hybrid electric vehicle to ensure that respective parts are in a normal working temperature range. Then, the method takes inlet and outlet temperatures of the respective parts as state variables and a flow of coolant liquid of a pump of each component as control quantity to cooperatively control the temperatures of the respective parts using an MPC controller and considers relevance of heat management systems of respective circuits to improve the overall performance of the fuel cell hybrid electric vehicle.SELECTED DRAWING: Figure 1

Cerium oxide (CeO2) coated silica (SiO2) particles, optionally comprising the inorganic group-SO2X, and methods of making such particles. The addition of the cerium oxide (CeO2) coated silica (SiO2) particles to fluorinated polymers containing sulfonic acid functional groups increases their stability to free radical degradation when used in fuel cell applications or electrolytic applications.

The invention discloses a fuel cell bipolar plate cooling flow channel optimization method, and relates to the technical field of fuel cells, and the method comprises the following steps: arranging an asymmetric micro vortex generator and a dynamic pressure compensation flow channel in the edge area of a bipolar plate cooling flow channel; the asymmetric micro-vortex generator is composed of rhombic micro-pit arrays distributed at the bottom of the flow channel. According to the fuel cell bipolar plate cooling flow channel optimization method, through collaborative design of an asymmetric micro-vortex generator and a dynamic pressure compensation flow channel, high-kinetic-energy vortex flow is directionally induced in the edge area of the bipolar plate cooling flow channel, and three-dimensional momentum redistribution is realized through section contraction acceleration and flow guide fin suction; the problems of insufficient flow power and low heat dissipation efficiency of a coolant at the edge of a traditional runner are solved, formation of a local high-temperature area at the edge of a fuel cell stack can be inhibited, the aging rate of a membrane electrode assembly is reduced, meanwhile, the spatial uniformity of electrochemical reaction and water management is guaranteed, and the output stability and the operation life of a cell are improved.