CN111969227A - Vehicle-mounted fuel cell water management system and control method thereof - Google Patents
Vehicle-mounted fuel cell water management system and control method thereof Download PDFInfo
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- CN111969227A CN111969227A CN202010874832.1A CN202010874832A CN111969227A CN 111969227 A CN111969227 A CN 111969227A CN 202010874832 A CN202010874832 A CN 202010874832A CN 111969227 A CN111969227 A CN 111969227A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04291—Arrangements for managing water in solid electrolyte fuel cell systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
- H01M8/04141—Humidifying by water containing exhaust gases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04335—Temperature; Ambient temperature of cathode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04955—Shut-off or shut-down of fuel cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention discloses a vehicle-mounted fuel cell water management system and a control method thereof. The hydrogen system comprises a hydrogen tank, an electromagnetic valve and a pressure reducing valve, the nitrogen system comprises a nitrogen tank, an electromagnetic valve and a pressure reducing valve, the two systems are connected in parallel, and the temperature and the pressure of the hydrogen system are measured by a temperature sensor and a pressure sensor; the air circuit system comprises an electromagnetic valve, an air filter, an air compressor, a temperature sensor, a pressure sensor and a flowmeter; the hydrogen circulating system comprises a gas-liquid separator, a liquid storage tank, an electromagnetic valve, a humidifier and a hydrogen circulating pump. The invention also discloses a control method of the system. The theoretical cathode pressure drop of the fuel cell is firstly calculated through a formula, and then the theoretical cathode pressure drop is compared with an actual pressure drop value to judge the internal water content of the fuel cell at the moment, so that corresponding water management operation is executed to prevent the fuel cell from being flooded or dried.
Description
Technical Field
The invention belongs to the field of fuel cell automobiles, and particularly relates to a vehicle-mounted fuel cell water management system and a control method thereof.
Background
A fuel cell is a device that converts chemical energy into electric energy, water, and thermal energy by a chemical reaction of hydrogen with an anode. As a novel clean energy, the fuel cell has the advantages of high efficiency, silence, environmental protection, simple structure, high energy density, high safety and the like.
The water content of the proton exchange membrane greatly affects the operating efficiency of the fuel cell. Membrane flooding causes large fluctuations in voltage, resulting in unstable output power, and reduced fuel cell life. The membrane dry causes the conductivity of the proton exchange membrane to be reduced, and the ohmic resistance is increased, so that the output power of the fuel cell is reduced. Therefore, there is a need for a reasonable water management system and control method to achieve water balance for fuel cells. The existing patents, such as chinese patent publication No. CN106450383B, publication No. 2019-06-25, disclose a proton exchange membrane fuel cell water management system and its working method, the present invention mainly uses the installed water level monitoring device to measure the water level change status inside the fuel cell, and performs the water management of the fuel cell, but the system structure is more complex; also, for example, patent application publication No. CN109799457A, published as 2019-05-24, discloses a water management monitoring system for a fuel cell and a working method thereof, so as to find and adjust the water balance problem of the fuel cell in time, and simultaneously recycle waste water with residual heat generated during the operation of the fuel cell, but the system has many required components and a complex control mode; also, for example, chinese patent publication No. CN110010932A, published as 2019-07-12, discloses a method for separating liquid water, which is formed by condensation of circulating hydrogen in a low-pressure hydrogen pipeline, by an auxiliary steam-water separator and discharging the liquid water or humidifying hydrogen by selecting different water discharging and exhausting loops under different working conditions, so as to prevent insufficient or excessive humidification of the anode of the stack and improve the performance of the stack, but does not consider the water content state of the cathode of the stack.
In view of the above technical deficiencies, the present invention provides a water management system for a vehicle-mounted fuel cell and a control method thereof, wherein a theoretical cathode pressure drop of the fuel cell is calculated by a formula, and then compared with an actual pressure drop value to determine the internal water content of the fuel cell at the moment, so as to perform a corresponding water management operation to prevent the fuel cell from flooding or drying a membrane, and maintain the normal water content state of the fuel cell.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a vehicle-mounted fuel cell water management system and a control method thereof, which execute corresponding water management operation by judging the internal water content of a fuel cell so as to prevent the fuel cell from being flooded by water or dry membrane and maintain the fuel cell in a normal water content state.
The invention provides a vehicle-mounted fuel cell water management system which comprises an electric pile, a hydrogen gas path system, an air path system, a nitrogen gas path system and a hydrogen gas circulating system. The hydrogen way system comprises a hydrogen tank, a first electromagnetic valve and a first pressure reducing valve, the nitrogen way system comprises a second electromagnetic valve and a second pressure reducing valve, and the two ways of systems are connected in parallel; the air circuit system comprises a solenoid valve III, an air filter, an air compressor, a temperature sensor II, a pressure sensor II and a flowmeter; the hydrogen circulating system comprises a gas-liquid separator, a liquid storage tank, four and five electromagnetic valves, a humidifier and a hydrogen circulating pump;
a hydrogen tank, a first electromagnetic valve and a first pressure reducing valve in the hydrogen gas path system are sequentially connected with a first temperature sensor and a first pressure sensor and connected with the anode of the fuel cell;
a nitrogen tank, a solenoid valve II and a pressure reducing valve II in the nitrogen gas path system are sequentially connected with a temperature sensor I and a pressure sensor I and connected with the anode of the fuel cell;
a third electromagnetic valve, an air filter, an air compressor, a second temperature sensor, a second pressure sensor and a flowmeter in the air path system are sequentially connected and connected to the cathode of the fuel cell;
one side of a gas-liquid separator in the hydrogen circulating system is connected with the liquid storage tank, the other side of the gas-liquid separator is connected with two electromagnetic valve branches which are additionally provided with and are not additionally provided with the humidifier, and outlets of the two branches are connected with the hydrogen circulating pump.
The first temperature sensor and the first pressure sensor in the vehicle-mounted fuel cell water management system are used for measuring the temperature and the pressure of an anode flow channel, and the second temperature sensor, the second pressure sensor and the flowmeter are used for measuring the temperature, the pressure and the flow of a cathode flow channel.
The invention provides a control method of a vehicle-mounted fuel cell water management system, which comprises the following steps: calculating the theoretical cathode pressure drop of the fuel cell by the following formula according to the temperature, the pressure and the flow of the cathode flow channel measured by the temperature sensor II, the pressure sensor II and the flow meter;
wherein f is the friction coefficient, L is the length of the flow channel, DhIs the hydraulic diameter, ρ is the fluid density,
is the average flow velocity of the fluid, KLFor local resistance, the length of the flow channel and the density of the fluid are fixed values, the hydraulic diameter can be calculated by defining the length of the flow channel, the average flow velocity of the fluid can be obtained by converting the flow, and the friction coefficient is generally 56/ReIs calculated to obtaineFor the Reynolds number, the calculation of the Reynolds number is not described here in detail, and the local resistance is typically 30 f.
The invention provides a control method of a vehicle-mounted fuel cell water management system, which is characterized in that theoretical cathode pressure drop of a fuel cell obtained through the formula is compared with actual pressure drop, and the actual pressure drop can be measured by a pressure sensor. And when the actual pressure drop is smaller than the theoretical pressure drop, the fuel cell is in a membrane dry state.
When the fuel cell is in a water-flooded state, excess accumulated water generated by the fuel cell is discharged in a flow pulse mode, the specific implementation mode is that the electromagnetic valve II is opened discontinuously, the accumulated water in the fuel cell is discharged by using nitrogen, the electromagnetic valve I is closed in the process so as to reduce the consumption of hydrogen, and the electromagnetic valve IV and the electromagnetic valve V are closed so as to prevent the nitrogen from entering the fuel cell again; when the fuel cell is in a membrane dry state, the residual hydrogen separated by the gas-liquid separator after the reaction is humidified to increase the water content in the fuel cell. In the normal working process, the electromagnetic valve IV is in a closed state, the electromagnetic valve V is in an open state, and the humidifier does not work.
Compared with the prior art, the invention has the following advantages:
1) the water management system is perfected on the basis of the original hydrogen circulation loop, the structural change is small, and the water in the residual hydrogen separated by part of the gas-liquid separator can be utilized, so that the power of the humidifier can be reduced.
2) The invention can judge the water content of the fuel cell in real time by solving the cathode voltage drop, and has high overall control precision and short control period.
3) The water management system of the invention has simple control method and easy realization, and improves the working efficiency and the performance of the fuel cell.
Drawings
The above aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an on-board fuel cell water management system according to an embodiment of the present invention;
in the figure: 1-air flow, 2-three solenoid valves, 3-air filters, 4-compressors, 5-two temperature sensors, 6-two pressure sensors, 7-flowmeters, 8-galvanic piles, 9-gas-liquid separators, 10-liquid storage tanks, 11-four solenoid valves, 12-five solenoid valves, 13-one pressure sensors, 14-humidifiers, 15-one temperature sensors, 16-hydrogen circulating pumps, 17-two pressure reducing valves, 18-one pressure reducing valves, 19-two solenoid valves, 20-one solenoid valves, 21-nitrogen tanks and 22-hydrogen tanks.
Fig. 2 is a detailed flowchart of the operation according to the embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
in the description of the present invention, it should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships, and are only relational terms determined to facilitate the description of the relationships between the components of the present invention, and do not denote any component, and should not be construed as limiting the present invention; the specific meaning can be understood by those of ordinary skill in the art as a matter of case.
As shown in fig. 1, a water management system for a vehicle-mounted fuel cell includes an electric stack, a hydrogen gas path system, an air path system, a nitrogen gas path system, and a hydrogen gas circulation system. The hydrogen way system comprises a hydrogen tank 22, a first electromagnetic valve 20 and a first pressure reducing valve 18, the nitrogen way system comprises a nitrogen tank 21, a second electromagnetic valve 19 and a second pressure reducing valve 17, and the two ways of systems are connected in parallel; the air circuit system comprises a solenoid valve III 2, an air filter 3, an air compressor 4, a temperature sensor II 5, a pressure sensor II 6 and a flowmeter 7; the hydrogen circulating system comprises a gas-liquid separator 9, a liquid storage tank 10, a fourth electromagnetic valve 11, a fifth electromagnetic valve 12, a humidifier 14 and a hydrogen circulating pump 16; a hydrogen tank 22, an electromagnetic valve I20 and a pressure reducing valve I18 in the hydrogen gas path system are sequentially connected with a temperature sensor I15 and a pressure sensor I13 and connected with the anode of the fuel cell; a nitrogen tank 21, a second electromagnetic valve 19 and a second pressure reducing valve 17 in the nitrogen gas path system are sequentially connected with a first temperature sensor 15 and a first pressure sensor 13 and connected with the anode of the fuel cell; a third electromagnetic valve 2, an air filter 3, an air compressor 4, a second temperature sensor 5, a second pressure sensor 6 and a flowmeter 7 in the air path system are sequentially connected and connected with the cathode of the fuel cell; one side of a gas-liquid separator 9 in the hydrogen circulating system is connected with a liquid storage tank 10, the other side of the gas-liquid separator is connected with two branches of electromagnetic valves 11 and 12 which are additionally provided with and are not additionally provided with a humidifier 14, and outlets of the two branches are connected with a hydrogen circulating pump 16.
The temperature sensor I15 and the pressure sensor I13 are used for measuring the temperature and the pressure of the anode flow channel, and the temperature sensor II 5, the pressure sensor II 6 and the flow meter 7 are used for measuring the temperature, the pressure and the flow of the cathode flow channel.
The vehicle-mounted fuel cell water management system calculates the theoretical cathode pressure drop of the fuel cell through the temperature, the pressure and the flow of the cathode flow channel measured by the temperature sensor II 5, the pressure sensor II 6 and the flow meter 7 according to the following formula;
wherein f is the friction coefficient, L is the length of the flow channel, DhIs the hydraulic diameter, ρ is the fluid density,
is the average flow velocity of the fluid, KLFor local resistance, the length of the flow channel and the density of the fluid are fixed values, the hydraulic diameter can be calculated by defining the length of the flow channel, the average flow velocity of the fluid can be obtained by converting the flow, and the friction coefficient is generally 56/ReIs calculated to obtaineReynolds number, here for mineThe calculation of the Numbers is not repeated, and the local resistance is generally 30 f.
The theoretical cathode pressure drop of the fuel cell calculated by the above formula is compared with the actual pressure drop, and the actual pressure drop can be measured by the pressure sensor. And when the actual pressure drop is smaller than the theoretical pressure drop, the fuel cell is in a membrane dry state.
When the fuel cell is in a water-flooded state, excess accumulated water generated by the fuel cell is discharged in a flow pulse mode, the specific implementation mode is that the second electromagnetic valve 19 is opened discontinuously, the accumulated water in the fuel cell is discharged by using nitrogen, the first electromagnetic valve 20 is closed in the process so as to reduce the consumption of the hydrogen, and the fourth electromagnetic valve 11 and the fifth electromagnetic valve 12 are closed so as to prevent the nitrogen from entering the fuel cell again; when the fuel cell is in a membrane dry state, the moisture content in the fuel cell is increased by humidifying the residual hydrogen separated by the gas-liquid separator 9 after the reaction, in the specific embodiment, the electromagnetic valve four 11 is opened, the electromagnetic valve five 12 is closed, and meanwhile, the humidifier 14 also starts to work. In the normal working process, the fourth electromagnetic valve 11 is in a closed state, the fifth electromagnetic valve 12 is in an open state, and the humidifier 14 does not work.
Parts which are not described in the invention can be realized by adopting or referring to the prior art. In the description of the specification, a schematic representation of terms does not necessarily refer to the same embodiment or example. Moreover, the particular features or methods described may be combined as suitable in any of the embodiments.
The embodiments of the present invention are merely exemplary and not restrictive, and those skilled in the art should understand that they can make modifications, substitutions, simplifications, etc. without departing from the spirit and principle of the present invention.
Claims (5)
1. A vehicle-mounted fuel cell water management system characterized by: the system comprises an electric pile, a hydrogen gas path system, an air path system, a nitrogen gas path system and a hydrogen gas circulating system; the hydrogen way system comprises a hydrogen tank, a first electromagnetic valve and a first pressure reducing valve, the nitrogen way system comprises a second electromagnetic valve and a second pressure reducing valve, and the two ways of systems are connected in parallel; the air circuit system comprises a solenoid valve III, an air filter, an air compressor, a temperature sensor II, a pressure sensor II and a flowmeter; the hydrogen circulating system comprises a gas-liquid separator, a liquid storage tank, four and five electromagnetic valves, a humidifier and a hydrogen circulating pump;
a hydrogen tank, a first electromagnetic valve and a first pressure reducing valve in the hydrogen gas path system are sequentially connected with a first temperature sensor and a first pressure sensor and connected with the anode of the fuel cell;
a nitrogen tank, a solenoid valve II and a pressure reducing valve II in the nitrogen gas path system are sequentially connected with a temperature sensor I and a pressure sensor I and connected with the anode of the fuel cell;
a third electromagnetic valve, an air filter, an air compressor, a second temperature sensor, a second pressure sensor and a flowmeter in the air path system are sequentially connected and connected to the cathode of the fuel cell;
one side of a gas-liquid separator in the hydrogen circulating system is connected with the liquid storage tank, the other side of the gas-liquid separator is connected with two electromagnetic valve branches which are additionally provided with and are not additionally provided with the humidifier, and outlets of the two branches are connected with the hydrogen circulating pump.
2. The on-vehicle fuel cell water management system according to claim 1, characterized in that: the temperature sensor I and the pressure sensor I are used for measuring the temperature and the pressure of the anode flow channel, and the temperature sensor II, the pressure sensor II and the flow meter are used for measuring the temperature, the pressure and the flow of the cathode flow channel.
3. The on-vehicle fuel cell water management system control method according to claim 2, characterized in that: calculating the theoretical cathode pressure drop of the fuel cell by the following formula according to the temperature, the pressure and the flow of the cathode flow channel measured by the temperature sensor II, the pressure sensor II and the flow meter;
wherein f is the friction coefficient, L is the length of the flow channel, DhIs the hydraulic diameter, ρ is the fluid density,
is the average flow velocity of the fluid, KLFor local resistance, the length of the flow channel and the density of the fluid are fixed values, the hydraulic diameter can be calculated by defining the length of the flow channel, the average flow velocity of the fluid can be obtained by converting the flow, and the friction coefficient is generally 56/ReIs calculated to obtaineFor the Reynolds number, the calculation of the Reynolds number is not described here in detail, and the local resistance is typically 30 f.
4. The on-vehicle fuel cell water management system control method according to claim 3, characterized in that: and comparing the theoretical cathode pressure drop of the fuel cell obtained by the formula with the actual pressure drop, wherein when the actual pressure drop is larger than the theoretical pressure drop, the fuel cell is in a water flooded state, and when the actual pressure drop is smaller than the theoretical pressure drop, the fuel cell is in a dry membrane state.
5. The on-vehicle fuel cell water management system control method according to claim 4, characterized in that: when the fuel cell is in a water-flooded state, excess accumulated water generated by the fuel cell is discharged in a flow pulse mode, the specific implementation mode is that the electromagnetic valve II is opened discontinuously, the accumulated water in the fuel cell is discharged by using nitrogen, the electromagnetic valve I is closed in the process so as to reduce the consumption of hydrogen, and the electromagnetic valve IV and the electromagnetic valve V are closed so as to prevent the nitrogen from entering the fuel cell again; when the fuel cell is in a membrane dry state, humidifying the residual hydrogen separated by the gas-liquid separator after reaction to increase the water content in the fuel cell, wherein the specific implementation mode is that the fourth electromagnetic valve is opened, the fifth electromagnetic valve is closed, and meanwhile, the humidifier also starts to work; in the normal working process, the electromagnetic valve IV is in a closed state, the electromagnetic valve V is in an open state, and the humidifier does not work.
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| CN112635796A (en) * | 2020-12-18 | 2021-04-09 | 北京理工大学 | Water circulation system for fuel cell |
| CN112751058A (en) * | 2021-01-05 | 2021-05-04 | 一汽解放汽车有限公司 | Performance recovery device and control method thereof |
| CN113097535A (en) * | 2021-04-06 | 2021-07-09 | 吉林大学 | Water heat management system of self-humidifying fuel cell and control method thereof |
| CN113764703A (en) * | 2021-11-09 | 2021-12-07 | 北京新研创能科技有限公司 | Fuel cell anode pulse discharge control method, device and readable storage medium |
| CN116154221A (en) * | 2023-03-24 | 2023-05-23 | 科威尔(北京)技术开发有限公司 | Hydrogen recycling system and control method thereof |
| CN116525882A (en) * | 2023-07-03 | 2023-08-01 | 珠海格力电器股份有限公司 | Fuel cell and control method, device and storage medium for water management system of fuel cell |
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| CN112635796B (en) * | 2020-12-18 | 2021-10-19 | 北京理工大学 | Water circulation system for fuel cell |
| CN112751058A (en) * | 2021-01-05 | 2021-05-04 | 一汽解放汽车有限公司 | Performance recovery device and control method thereof |
| CN113097535A (en) * | 2021-04-06 | 2021-07-09 | 吉林大学 | Water heat management system of self-humidifying fuel cell and control method thereof |
| CN113764703A (en) * | 2021-11-09 | 2021-12-07 | 北京新研创能科技有限公司 | Fuel cell anode pulse discharge control method, device and readable storage medium |
| CN116154221A (en) * | 2023-03-24 | 2023-05-23 | 科威尔(北京)技术开发有限公司 | Hydrogen recycling system and control method thereof |
| CN116154221B (en) * | 2023-03-24 | 2023-11-21 | 科威尔(北京)技术开发有限公司 | Control method of hydrogen recycling system |
| CN116525882A (en) * | 2023-07-03 | 2023-08-01 | 珠海格力电器股份有限公司 | Fuel cell and control method, device and storage medium for water management system of fuel cell |
| CN116525882B (en) * | 2023-07-03 | 2023-09-15 | 珠海格力电器股份有限公司 | Fuel cell and control method, device and storage medium for water management system of fuel cell |
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