CN116470104B - Control system, control method, fuel cell system, and construction machine - Google Patents
Control system, control method, fuel cell system, and construction machine Download PDFInfo
- Publication number
- CN116470104B CN116470104B CN202310037067.1A CN202310037067A CN116470104B CN 116470104 B CN116470104 B CN 116470104B CN 202310037067 A CN202310037067 A CN 202310037067A CN 116470104 B CN116470104 B CN 116470104B
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- steam
- valve
- concentration
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 title claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 216
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 171
- 229910001868 water Inorganic materials 0.000 claims abstract description 169
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 104
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000001257 hydrogen Substances 0.000 claims abstract description 35
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims description 91
- 238000010926 purge Methods 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 10
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000011800 void material Substances 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 9
- 235000003642 hunger Nutrition 0.000 abstract description 6
- 230000037351 starvation Effects 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 28
- 206010037544 Purging Diseases 0.000 description 15
- 239000012528 membrane Substances 0.000 description 13
- 238000005192 partition Methods 0.000 description 9
- 238000011217 control strategy Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005370 electroosmosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
-
- 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
-
- 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
-
- 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
- H01M8/04402—Pressure; Ambient pressure; Flow of anode exhausts
-
- 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
- H01M8/0444—Concentration; Density
- H01M8/04462—Concentration; Density of anode exhausts
-
- 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
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to the technical field of batteries, and discloses a control system, a control method, a fuel cell system and engineering machinery, wherein the control system comprises: the parameter receiving device is used for receiving the concentration of the nitrogen in the steam-water separator; pressure detecting means for detecting a pressure at an anode outlet of the stack; and a control device for: recording the current pressure and determining a corresponding feedback value under the condition that the concentration of the nitrogen is greater than or equal to a first preset concentration, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen; calibrating a control signal for the air inlet valve according to the feedback value; and controlling the air inlet valve according to the calibrated control signal so as to regulate the hydrogen entering the electric pile. According to the invention, the nitrogen discharge process is controlled in a coupling way by combining the nitrogen concentration and the pressure parameter, so that the control accuracy of nitrogen discharge is improved while the complexity of control conditions is reduced, and the risks of hydrogen starvation, exhaust pressure drop impact and the like of the anode are effectively reduced.
Description
Technical Field
The present invention relates to the field of battery technologies, and in particular, to a control system, a control method, a fuel cell system, and an engineering machine.
Background
When the hydrogen fuel cell system operates, liquid water and nitrogen of the cathode can permeate to the anode through the proton exchange membrane, and excessive liquid water can cause the problem of flooding of the anode, so that the reaction active area and the fuel transfer capacity are affected; too much nitrogen reduces the anode hydrogen partial pressure, resulting in the "hydrogen starvation" problem. Typically, the nitrogen concentration in the anode cannot exceed 10%. Therefore, proper drainage and exhaust strategies are required to be formulated in the whole operation stage of the system, and the high performance and the long service life of the fuel cell are ensured.
At present, a periodic pulse method is mostly adopted to control the tail discharge valve to simultaneously finish water and nitrogen discharge, and the opening time and the opening period of the tail discharge valve are required to be calibrated before testing. Under different current conditions, the period and time of water and air discharge are different due to different water yield and working conditions, so that the calibration complexity and the difficulty of tail discharge valve control are greatly increased, the water and nitrogen discharge amount cannot be accurately determined, and the pressure stability cannot be maintained. However, too little drainage and nitrogen removal can lead to the reduction of battery performance, too much drainage and nitrogen removal can lead to the reduction of hydrogen utilization rate, and larger pressure fluctuation can bring mechanical loss to the proton membrane.
Disclosure of Invention
The invention aims to provide a control system, a control method, a fuel cell system and engineering machinery, which at least can solve the problems of the parts, and combine the nitrogen concentration and the pressure parameter to carry out coupling control on the nitrogen discharge process, so that the control accuracy of nitrogen discharge is improved while the complexity of control conditions is reduced, and the risks of hydrogen starvation, exhaust pressure drop impact and the like of an anode are further effectively reduced.
In order to achieve the above object, a first aspect of the present invention provides a control system for a fuel cell system including: an air inlet valve, a galvanic pile and a steam-water separator, the control system comprising: the parameter receiving device is used for receiving the concentration of the nitrogen in the steam-water separator; pressure detection means for detecting a pressure at an anode outlet of the stack; and control means for performing the following operations: recording the current pressure and determining a corresponding feedback value according to the current pressure under the condition that the concentration of the nitrogen is greater than or equal to a first preset concentration, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen; calibrating a control signal for the air inlet valve according to the feedback value; and controlling the air inlet valve according to the calibrated control signal so as to regulate the hydrogen entering the electric pile.
Preferably, the parameter receiving device is further configured to receive a liquid level of the liquid water in the steam-water separator, and correspondingly, the control device is further configured to record a current pressure and determine a corresponding feedback value according to the current pressure, and control the first valve of the steam-water separator to open to discharge nitrogen when the liquid level is greater than or equal to a first preset level and the concentration of the nitrogen is greater than or equal to a first preset concentration.
Preferably, the control device is further configured to, after performing the step of controlling the first valve of the steam-water separator to discharge nitrogen, perform the following operations: and controlling the first valve to close to stop discharging nitrogen under the condition that the concentration of the nitrogen is smaller than a second preset concentration or the difference value between the current pressure and the pressure is larger than or equal to a preset pressure difference, wherein the second preset concentration is smaller than the first preset concentration.
Preferably, the control device is further configured to maintain the first valve in a closed state if either of the following two conditions is satisfied: the liquid level height is greater than or equal to the first preset height and the concentration of the nitrogen is less than the first preset concentration; or the liquid level height is smaller than the first preset height.
Preferably, the control device is further configured to control the first valve and the bypass valve for controlling air to be introduced to be closed when the concentration of the nitrogen is greater than or equal to a third preset concentration and the increment of the liquid level height in the current round of purging is smaller than a preset increment, where the third preset concentration is greater than the first preset concentration.
Preferably, the control device is further configured to perform the following operations: controlling a second valve of the steam-water separator to be closed under the condition that the liquid level height is gradually increased and smaller than a second preset height or the liquid level height is gradually decreased and equal to the first preset height; controlling the second valve to be opened to discharge liquid water under the condition that the liquid level height is greater than or equal to the second preset height, wherein the second preset height is greater than the first preset height; or controlling the second valve to open in case a shut-down signal is received, and controlling the second valve to close in case the liquid level is equal to 0.
Preferably, the steam-water separator comprises: a housing including a first side and a second side disposed opposite each other; an inlet provided on the first side for introducing a steam-water mixture; a baffle plate, a first end of which is arranged below the inlet and a first gap is reserved between a second end of which and the second side surface, and the baffle plate is used for guiding liquid water in the steam-water mixture to enter a lower half space of the steam-water separator; the baffle plate is obliquely arranged above the baffle plate and used for blocking the hydrogen in the steam-water mixture from flowing to the second side surface; the first valve is arranged on the second side surface and is used for discharging nitrogen in the steam-water mixture; the second valve is arranged at the bottom of the steam-water separator and is used for discharging the liquid water; a concentration sensor for detecting the concentration of the nitrogen gas; and a liquid level sensor for detecting a liquid level of the liquid water.
Preferably, the steam-water separator further comprises: and the chute is arranged at the bottom of the steam-water separator, the first end face of the chute is connected with the first side face, and a second gap is reserved between the second end face and the second side face.
Preferably, the area of the first end face is larger than the area of the second end face.
Preferably, the second valve is disposed at the second void on the bottom of the steam-water separator.
Through the technical scheme, the method and the device creatively record the current pressure and determine the corresponding feedback value according to the current pressure under the condition that the concentration of the nitrogen in the steam-water separator is larger than or equal to the first preset concentration, and control the first valve of the steam-water separator to be opened so as to discharge the nitrogen; then, calibrating a control signal for the air inlet valve according to the feedback value; finally, the air inlet valve is controlled according to the calibrated control signal so as to regulate the hydrogen entering the electric pile. Therefore, the invention can combine the nitrogen concentration and the pressure parameter to carry out coupling control on the nitrogen discharge process, thereby reducing the complexity of control conditions and improving the control precision of nitrogen discharge, and further effectively reducing the risks of hydrogen starvation, exhaust pressure drop impact and the like of the anode.
A second aspect of the invention provides a control method for a fuel cell system including: the control method comprises the following steps of: receiving the concentration of nitrogen in the steam-water separator; detecting a pressure at an anode outlet of the stack; recording the current pressure and determining a corresponding feedback value according to the current pressure under the condition that the concentration of the nitrogen is greater than or equal to a first preset concentration, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen; calibrating a control signal for the air inlet valve according to the feedback value; and controlling the air inlet valve according to the calibrated control signal so as to regulate the hydrogen entering the electric pile.
Preferably, the control method further includes: receiving the liquid level of liquid water in the steam-water separator; and under the condition that the liquid level height is greater than or equal to a first preset height and the concentration of the nitrogen is greater than or equal to a first preset concentration, recording the current pressure, determining a corresponding feedback value according to the current pressure, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen.
Specific details and benefits of the control method for a fuel cell system according to the embodiments of the present invention can be found in the above description of the control system for a fuel cell system, and are not repeated here.
A third aspect of the invention provides a fuel cell system comprising: the control system for a fuel cell system.
A fourth aspect of the present invention provides a construction machine including: the fuel cell system.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention. In the drawings:
fig. 1 is a block diagram of a control system for a fuel cell system provided in an embodiment of the present invention;
FIG. 2 is a flow chart of an exhaust control strategy for start-up and run phases provided by an embodiment of the present invention;
FIG. 3 is a flow chart of an exhaust control strategy for a purge phase provided by an embodiment of the present invention;
FIG. 4 is a logic diagram of anode drainage control according to an embodiment of the present invention;
FIG. 5 is a graph showing the control effect of anode drainage according to an embodiment of the present invention;
fig. 6 is a block diagram of a fuel cell system provided by an embodiment of the present invention; and
Fig. 7 is a block diagram of a steam-water separator according to an embodiment of the present invention.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Before describing various embodiments of the present invention, a brief analysis of proton exchange membrane gas-liquid transfer is performed. The design concept of the invention is formed on the basis of the theory.
Moisture management of fuel cell systems has a very important impact on performance output and reliability: water management affects the conductivity of the proton exchange membrane and the mass transfer capacity of the flow channels or reaction zones; gas management affects fuel utilization and durability of the stack. Because of the inherent characteristics, concentration and pressure gradient of the proton exchange membrane, water generated by the cathode (the mass flow is calculated by the formula (1)) and gas of the cathode and the anode can have permeation in the membrane, and mass transfer of each component in the membrane is a very complex process. At present, the mainstream theory considers that water exists in three forms of water vapor, liquid water and film water, and phase transition exists among the phases. The molar flux of water in the membrane n w,cross is mainly three: diffusion term due to concentration difference, electroosmosis term due to electric drag and convection term due to pressure difference (see formula (2)). Whereas the gas is dissolved in water and diffuses in the membrane by concentration difference, equation (3) gives the molar flux n N,cross of nitrogen in the membrane.
nN,cross＝-DN_mHN_m▽pN (3)；
Wherein I is output current of the electric pile, N is the number of single cell pieces, F is Faraday constant,Is the mass flow of water. D w_m、DN_m is the diffusion coefficient of water and nitrogen, respectively, in the membrane, C w is the molar concentration of water, n d is the electromigration coefficient of water, i m is the current density vector, k p_m is the permeability of the membrane, μ w is the viscosity of water, H N_m is the solubility of nitrogen in the membrane, and p N is the nitrogen partial pressure.
Fig. 1 is a block diagram of a control system for a fuel cell system according to an embodiment of the present invention. Wherein the fuel cell system may include: an intake valve (e.g., proportional valve 4), a stack 7, and a steam-water separator 10, as shown in fig. 6. As shown in fig. 1, the control system may include: a parameter receiving device 100 for receiving the concentration of nitrogen in the steam-water separator; a pressure detecting means 200 (for example, a pressure sensor 9 shown in fig. 6) for detecting a pressure at an anode outlet of the stack; and the control device 300 is used for comprehensively controlling the air inlet valve and the steam-water separator according to the concentration of the nitrogen, the liquid level and the pressure so as to realize the discharge of the nitrogen.
The control device 300 is configured to perform the following operations: recording the current pressure and determining a corresponding feedback value according to the current pressure under the condition that the concentration of the nitrogen is greater than or equal to a first preset concentration, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen; calibrating a control signal for the air inlet valve according to the feedback value; and controlling the air inlet valve according to the calibrated control signal so as to regulate the hydrogen entering the electric pile.
Wherein the first preset height may be h min; the first preset concentration may be 5%.
When the control device 300 (for example, an upper computer) receives a signal with the nitrogen concentration X N% or more, the current pressure at the anode outlet (i.e., the pressure before the exhaust valve is opened) is recorded, the first valve (for example, the electromagnetic valve 16) is controlled to open for exhausting nitrogen, meanwhile, a feedback value delta theta is provided as a feedforward value according to the corresponding relation between the current pressure and the feedback value, the duty ratio theta of the control signal (for controlling the air inlet valve) is calibrated, the air inlet valve (for example, the proportional valve 4) is adjusted by adopting the duty ratio of the calibrated control signal, the instantaneous pressure drop caused by exhausting is supplemented by properly improving the valve opening, and the stability of the anode pressure is ensured.
Specifically, the control system further includes: and another pressure detecting means (e.g., a pressure sensor 6 shown in fig. 6) for detecting the pressure at the anode inlet of the stack. Accordingly, the control device 300 is further configured to determine the duty ratio of the control signal according to a difference between the target pressure at the anode inlet and the pressure at the anode inlet of the stack, in the case where the concentration of the nitrogen gas is greater than or equal to the first preset concentration. Specifically, the duty cycle of the control signal may be determined by a PID algorithm based on the difference between the target pressure at the anode inlet and the pressure at the anode inlet of the stack.
In an embodiment, the parameter receiving device 100 is further configured to receive a level of liquid water in the steam-water separator. Correspondingly, the control device 300 is further used for recording the current pressure and determining a corresponding feedback value according to the current pressure and controlling the first valve of the steam-water separator to be opened to discharge nitrogen when the liquid level height is greater than or equal to a first preset height and the concentration of the nitrogen is greater than or equal to a first preset concentration.
In particular, the data received by the parameter receiving device 100 may be provided by a liquid level sensor and a concentration sensor in the steam-water separator, and for details, reference may be made to the description of the steam-water separator below. The pressure detecting means 200 may be a pressure sensor 9 as shown in fig. 6.
When the liquid level height h is more than or equal to h min, the fuel cell system is indicated to enter the operation stage. In the operation phase: the permeated cathode nitrogen continuously circulates in the anode, when the control device 300 (such as an upper computer) receives a signal with the nitrogen concentration X N% or more, the current pressure at the outlet of the anode is recorded, the first valve (such as the electromagnetic valve 16) is controlled to open for discharging nitrogen, meanwhile, a feedback value delta theta is provided according to the current pressure to serve as a feedforward value for calibrating the duty ratio theta (the specific determination mode is described above and is not repeated herein) of a control signal calculated by PID, and the calibrated duty ratio of the control signal is adopted to adjust the air inlet valve (such as the proportional valve 4) so as to supplement the instant pressure drop caused by the exhaust by properly increasing the valve opening, so that the stability of the anode pressure is ensured.
In the above embodiments, the correspondence between the pressure and the feedback value may be stored in the control device 300 in advance. Specifically, the corresponding relation between the pressure and the feedback value needs to be calibrated in advance: the pressure environment at the outlet of the different anodes was simulated and different duty cycle increments (i.e., feedback values) were measured as the first valve was opened.
In an embodiment, the control device 300 is further configured to, after performing the step of controlling the first valve of the steam-water separator to discharge nitrogen, perform the following operations: and controlling the first valve to be closed to stop discharging the nitrogen gas under the condition that the concentration of the nitrogen gas is smaller than a second preset concentration or the difference between the current pressure and the pressure (namely, the real-time pressure at the anode outlet of the electric pile detected by the pressure detection device) is larger than or equal to a preset pressure difference, wherein the second preset concentration is smaller than the first preset concentration.
Wherein the second preset concentration may be 2%; the preset pressure differential may be 5kPa.
Specifically, after the first valve (for example, the solenoid valve 16) is opened, the control device 300 uses the anode voltage drop Δp being greater than or equal to 5kPa and the nitrogen concentration X N < 2% as parallel closing conditions, and once one of the conditions is found to be satisfied, the first valve (for example, the solenoid valve 16) is controlled to be closed, thereby ensuring sufficient nitrogen discharge and preventing pressure shock.
In an embodiment, the control device 300 is further configured to maintain the first valve in a closed state if either of the following two conditions is satisfied: the liquid level height is greater than or equal to the first preset height and the concentration of the nitrogen is less than the first preset concentration; or the liquid level height is smaller than the first preset height.
Specifically, when the liquid level height h is equal to or greater than h min, the fuel cell system is indicated to enter an operation stage. At the start of the run phase: the permeated cathode nitrogen is continuously circulated through the anode, and the first valve (e.g., solenoid valve 16) is controlled to remain closed when the control device 300 (e.g., host computer) receives a signal of a nitrogen concentration X N < 5%.
Or during the start-up phase: when the fuel cell is started to operate, the water yield is low, and the control device 300 (such as an upper computer) receives the liquid level height h < h min and controls the first valve (such as the electromagnetic valve 16) to be closed. The purpose is to ensure that the water storage container of the steam-water separator has a certain volume of liquid water, prevent gas from flowing out of the second valve (for example, the electromagnetic valve 15), and play the role of water drainage, gas exhaust and separation control.
More specifically, as shown in FIG. 2, the start-up and run phase exhaust control strategy may include the following steps S20-S210.
In step S20, the default exhaust solenoid valve remains closed.
Step S21, judging whether h is equal to or greater than h min, if yes, executing step S22; otherwise, S20 is performed.
Step S22, judging whether the nitrogen concentration is more than or equal to 5% or not, if yes, executing steps S25 and S28; otherwise, S20 is performed.
Step S23, determining a difference between the target pressure at the anode inlet and the actual pressure.
Wherein the actual pressure is the real-time pressure detected by the pressure detection device.
Step S24, a PID algorithm is adopted to determine the duty ratio theta of the control signal.
Step S25, determining a feedback value Δθ according to the current pressure at the anode outlet.
And calibrating the duty ratio of the control signal according to the feedback value.
Step S26, the proportional valve is adjusted according to the duty ratio of the calibrated control signal.
And step S27, judging whether the pressure drop at the anode outlet is more than or equal to 5kPa, if yes, executing step S210.
Step S28, opening an exhaust electromagnetic valve.
Step S29, judging whether the nitrogen concentration is <2% or not, if yes, executing step S210; otherwise, S28 is performed.
Step S210, the exhaust solenoid valve is closed.
In an embodiment, the control device 300 is further configured to control the first valve and the bypass valve for controlling air to be introduced to close when the concentration of the nitrogen gas is greater than or equal to a third preset concentration and the increment of the liquid level height in the current round of purging is less than a preset increment, so as to end the purging stage, where the third preset concentration is greater than the first preset concentration.
Wherein the third preset concentration may be 50%.
Specifically, the purge phase exhaust control strategy may include the following steps S30-S310, as shown in FIG. 3. In the embodiment, a control strategy is formulated based on a cathode air purging mode by taking the nitrogen concentration as a judging condition for ending the purging.
In step S30, the default exhaust solenoid valve remains closed.
Step S31, closing the proportional valve.
Step S32, closing the circulation stop valve.
Step S33, opening the bypass valve.
During the purge phase, the default first valve (e.g., solenoid valve 16) remains closed, closing proportional valve 4, closing circulation shut-off valve 11, opening bypass valve 8, and purging with dry air.
Step S34, judging whether the pressure=p 2 at the anode outlet is true, if yes, executing step S35; otherwise, step S34 is continued.
Step S35, the bypass valve is closed.
Step S36, the exhaust solenoid valve is opened.
Step S37, judging whether the pressure=p 1 at the anode outlet is true, if yes, executing step S38; otherwise, step S37 is continued.
Step S38, closing the exhaust electromagnetic valve.
When the pressure sensor 9 detects that the pressure reaches P 2, the bypass valve 8 is controlled to be closed, the electromagnetic valve 16 is opened to discharge mixed gas (air and hydrogen), and after the pressure is reduced to P 1, the electromagnetic valve 16 is closed to complete the first purging. The bypass valve 8 is opened to continue to be filled with air, and the second purging is completed by repeating the above operation after the same pressure reaches P 2. The cycle is repeated for a number of purges.
Step S39, judging whether the nitrogen concentration is more than or equal to 50% or not, if yes, executing step S310; otherwise, step S33 is performed.
Step S310, judging whether the increment < delta h of the liquid level height in the current round of purging is established, if yes, ending the purging; otherwise, step S33 is performed.
And (3) simultaneously meeting two conditions that the nitrogen concentration X N is more than or equal to 50% and the rising value of the liquid level height is smaller than deltah until the nth purging, wherein residual hydrogen and water are almost exhausted at the moment, stopping the purging, controlling the electromagnetic valve 16 and the bypass valve 8 to be closed, and ending the purging stage.
In an embodiment, the control device 300 is further configured to perform the following operations: controlling a second valve of the steam-water separator to be closed under the condition that the liquid level height is gradually increased and smaller than a second preset height or the liquid level height is gradually decreased and equal to the first preset height; controlling the second valve to be opened to discharge liquid water under the condition that the liquid level height is greater than or equal to the second preset height, wherein the second preset height is greater than the first preset height; or controlling the second valve to open in case a shut-down signal is received, and controlling the second valve to close in case the liquid level is equal to 0.
Wherein the second valve may be a solenoid valve 15, as shown in fig. 6 or 7.
Specifically, fig. 4 and 5 are an anode drainage control logic diagram and a control effect diagram (the ordinate is the liquid level height h and the abscissa is the time t), respectively, and before operation, the high and low liquid levels h max (second preset height) and h min (first preset height) of the steam-water separator 10 are determined. The drainage control process can be specifically divided into three stages: a start-up phase, a run and purge phase and a shut-down phase.
For the start-up phase: when the fuel cell is started to enter an idle or low-power running state just after completion, the electrochemical reaction produces less water, the liquid level height gradually rises along with the accumulation of liquid water, but the liquid level height h of the steam-water separator 10 is smaller than or equal to h min (shown in fig. 5), and the control electromagnetic valve 15 is kept closed in the starting stage.
For the run and purge phases: as the operating power increases, the operating time increases, the water penetrating from the cathode to the anode gradually increases, the liquid level of the water storage container of the steam-water separator 10 gradually increases, the electromagnetic valve 15 is controlled to be opened for drainage when h > h max is received, and the electromagnetic valve 15 is closed when the liquid level is reduced to h min. The liquid level of the steam-water separator 10 at this stage is always kept between h min≤h≤hmax (as shown in fig. 5).
And (3) stopping: in order to ensure the cold start function, the liquid water remaining in the steam-water separator after the end of purging must be completely discharged, preventing ice from forming to clog the solenoid valve 15. Therefore, after the end of the purge phase, in case of receiving the stop signal, the solenoid valve 15 is controlled to be opened to drain all the liquid water, and when the liquid level h=0, the solenoid valve 15 is controlled to be closed.
The structure of the steam-water separator in the above embodiments is explained and described below with reference to fig. 6 and 7.
As shown in fig. 7, the steam-water separator 10 may include: a housing 30, the housing 30 including a first side (e.g., right side) and a second side (e.g., left side) disposed opposite each other; an inlet 21 provided on the first side (e.g., right side) for introducing a steam-water mixture; a partition plate 23, a first end (e.g., right end) of the partition plate 23 is disposed below the inlet 21 and a first gap is left between a second end (e.g., left end) of the partition plate 23 and the second side (e.g., left side) for guiding liquid water in the steam-water mixture into a lower half space of the steam-water separator 10; a baffle (which may be one baffle or a plurality of baffles, e.g., baffles 18, 19, 20) disposed obliquely above the baffle 23 for blocking the flow of hydrogen in the steam-water mixture to the second side (e.g., left side); the first valve (e.g., solenoid valve 16) is disposed on the second side (e.g., left side) for discharging nitrogen in the steam-water mixture; the second valve (for example, a solenoid valve 15) is arranged at the bottom of the steam-water separator 10, and is used for discharging the liquid water; a concentration sensor 14 for detecting the concentration of the nitrogen gas; and a liquid level sensor 13 for detecting a liquid level of the liquid water.
Wherein, as shown in fig. 6 or 7, the concentration sensor 14 may be disposed inside the steam-water separator, for example, the concentration sensor 14 may be disposed on a top, a first side, or a second side of the steam-water separator. The level sensor 13 may be arranged inside the steam-water separator, for example, the level sensor 13 is arranged on the second side and the level sensor 13 is located at a lower level than the second end (e.g. left end) of the partition 23.
The concentration sensor 14 and the liquid level sensor 13 can respectively send the detected data to the parameter receiving device, so that difficulty in theoretical calculation of water content and nitrogen concentration can be overcome, liquid level and nitrogen partial pressure inside the steam-water separator can be directly monitored, and a drainage and exhaust control strategy of the fuel cell in all stages of operation (starting, carrying and purging) can be formulated accordingly.
In this embodiment, in order to ensure the accuracy of the anode drainage and the nitrogen removal of the fuel cell at the same time, the steam-water separator is redesigned, the water outlet (second valve) and the air outlet (second valve) are separated, and the liquid level sensor and the nitrogen concentration sensor are integrated to realize the accurate control process of the anode drainage and the nitrogen removal.
In an embodiment, the steam-water separator 10 may further include: a chute 24 is disposed at the bottom of the steam-water separator 10, a first end surface (a surface) of the chute 24 is connected to the first side surface (e.g., right side surface) and a second end surface (B surface) is spaced apart from the second side surface (e.g., left side surface), as shown in fig. 7.
Wherein the area of the first end surface (A surface) is larger than the area of the second end surface (B surface). That is, the inclined groove 24 has a similar inclination tendency to the partition plate 23. The inclined design of the partition plate 23 enables liquid water in the air flow process to fall into the water storage volume under the action of gravity for temporary storage, and the inclined design of the chute enables water at the bottom of the water storage volume to be discharged more easily so as to prevent water from accumulating in the container.
Wherein the second valve (e.g., solenoid valve 15) is disposed at the second void on the bottom of the steam-water separator 10. Because the inclined design of the partition 23 and the chute 24 allows water to accumulate in the second gap, the provision of the second valve (e.g., solenoid valve 15) in the second gap facilitates the drainage of water to prevent water from accumulating in the container, as shown in fig. 7.
In another embodiment, the bottom of the housing is in a downwardly sloping shape as seen in a direction from the first side to the second side.
Wherein the second valve is arranged at one end connected with the second side surface on the bottom of the steam-water separator.
Specifically, in the above embodiment, a chute is provided at the bottom of the steam-water separator to prevent water from collecting inside the container. In the present embodiment, however, the bottom of the steam-water separator is directly designed in an inclined shape (not shown), and the inclined shape is similar to the inclination trend of the partition 23, so that the second valve (e.g., the solenoid valve 15) on the bottom of the steam-water separator next to the second side (e.g., the left side) more effectively discharges the water in the container.
As shown in fig. 1, the steam-water separator may further include: an outlet 22, arranged on top of the steam-water separator 10, for recovering the hydrogen.
More specifically, the steam-water separator 10 is divided into upper and lower parts by a partition plate 23: the upper half space is a gas-water mixture channel, and the lower half space is a water storage volume. A nitrogen concentration sensor 14 and a liquid level sensor 13 are respectively arranged on the upper side of the channel and the left side of the water storage volume. When the fuel cell works, a hydrogen-water mixture at the anode outlet of the electric pile enters through an inlet 21 of a steam-water separator, hydrogen flows along a flow channel formed by a baffle plate 18, a baffle plate 19 and a baffle plate 20, a solenoid valve 16 is arranged on the left side and is used as a nitrogen discharge port, and an outlet 22 of the steam-water separator is connected with a circulating pump 12 (shown in fig. 6) so as to recycle unreacted hydrogen; the liquid water in the air flow process falls into the water storage volume under the action of gravity for temporary storage, the chute 24 at the bottom of the water storage volume is designed to prevent water from gathering in the container, the tail end of the chute 24 is connected with the electromagnetic valve 15, and the outlet of the electromagnetic valve 15 is only used as a water outlet, as shown in fig. 7.
The above embodiments integrate a liquid level sensor and a nitrogen concentration sensor on the steam-water separator 10, and directly monitor the liquid level and nitrogen partial pressure inside the steam-water separator, thereby formulating a drainage and exhaust control strategy for the whole stage of fuel cell operation (start-up, load and purge), bypassing the difficulty of theoretical calculation of water content and nitrogen concentration: the drainage is precisely controlled according to the liquid level difference, and the exhaust is coupled with the liquid level and pressure parameters for control. The control accuracy of water and nitrogen drainage is improved while the complexity of control conditions is reduced. The embodiments can effectively reduce the risks of ' flooding ', ' hydrogen starvation ', ' exhaust pressure drop impact and high potential of the anode, and are beneficial to improving the fuel utilization rate and the working stability of the hydrogen fuel cell.
In summary, the present invention creatively records the current pressure and determines the corresponding feedback value according to the current pressure when the concentration of the nitrogen in the steam-water separator is greater than or equal to the first preset concentration, and controls the first valve of the steam-water separator to open so as to discharge the nitrogen; then, calibrating a control signal for the air inlet valve according to the feedback value; finally, the air inlet valve is controlled according to the calibrated control signal so as to regulate the hydrogen entering the electric pile. Therefore, the invention can combine the nitrogen concentration and the pressure parameter to carry out coupling control on the nitrogen discharge process, thereby reducing the complexity of control conditions and improving the control precision of nitrogen discharge, and further effectively reducing the risks of hydrogen starvation, exhaust pressure drop impact and the like of the anode.
An embodiment of the present invention also provides a control method for a fuel cell system including: the control method comprises the following steps of: receiving the concentration of nitrogen in the steam-water separator; detecting a pressure at an anode outlet of the stack; recording the current pressure and determining a corresponding feedback value according to the current pressure under the condition that the concentration of the nitrogen is greater than or equal to a first preset concentration, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen; calibrating a control signal for the air inlet valve according to the feedback value; and controlling the air inlet valve according to the calibrated control signal so as to regulate the hydrogen entering the electric pile.
Preferably, the control method further includes: receiving the liquid level of liquid water in the steam-water separator; and under the condition that the liquid level height is greater than or equal to a first preset height and the concentration of the nitrogen is greater than or equal to a first preset concentration, recording the current pressure, determining a corresponding feedback value according to the current pressure, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen.
Specific details and benefits of the control method for a fuel cell system according to the embodiments of the present invention can be found in the above description of the control system for a fuel cell system, and are not repeated here.
An embodiment of the present invention also provides a fuel cell system including: the control system for a fuel cell system.
As shown in fig. 6, the hydrogen bottle 1 provides a high-pressure hydrogen source, and enters a hydrogen gas inlet combination valve (comprising a stop valve 3, a proportional valve 4 and a pressure relief valve 5) through a pressure relief valve 2, and the inlet pressure is further regulated and controlled to enable the hydrogen gas pressure to reach the stack inlet pressure requirement (generally 120-250 kPa), and the pressure relief valve 5 can select the relief pressure (such as 300 kPa) according to the requirement to prevent the inlet hydrogen from being over-pressurized. Then hydrogen enters the pile 7 to generate electric energy through electrochemical reaction, and pressure sensors 6 and 9 are respectively arranged at the inlet and outlet. The bypass valve 8 is used for air purge. The hydrogen enters a steam-water separator 10 through an outlet to separate liquid water, nitrogen and hydrogen, and the hydrogen is sent to the electric pile 7 again through a circulation stop valve 11 and a circulation pump 12. In addition, the liquid level sensor 13 and the nitrogen concentration sensor 14 in the steam-water separator 10 monitor the liquid level height and the nitrogen volume fraction in real time, and the control device controls the electromagnetic valve 16 to exhaust and the electromagnetic valve 15 to drain according to the sensor feedback signals, and finally the discharged part is discharged to the external environment after the mixer 17 is converged.
The fuel cell system in the various embodiments of the invention may be a hydrogen fuel cell system.
An embodiment of the present invention further provides an engineering machine, including: the fuel cell system.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.
Claims (14)
1. A control system for a fuel cell system, the fuel cell system comprising: an air inlet valve, a galvanic pile and a steam-water separator, the control system comprising:
the parameter receiving device is used for receiving the concentration of the nitrogen in the steam-water separator;
pressure detection means for detecting a pressure at an anode outlet of the stack; and
Control means for performing the following operations:
Recording the current pressure at the anode outlet under the condition that the concentration of the nitrogen is greater than or equal to a first preset concentration, determining a corresponding feedback value according to the current pressure and the corresponding relation between the pressure and the feedback value, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen;
calibrating a control signal for the air inlet valve according to the feedback value; and
Controlling the air inlet valve according to the calibrated control signal to regulate the hydrogen entering the electric pile,
Wherein the correspondence is calibrated by: simulating different pressure environments at the anode outlet, and measuring corresponding duty cycle increment when the first valve is opened.
2. The control system of claim 1, wherein the parameter receiving means is further for receiving a level of liquid water within the steam-water separator,
Correspondingly, the control device is also used for recording the current pressure and determining a corresponding feedback value according to the current pressure under the condition that the liquid level height is greater than or equal to a first preset height and the concentration of the nitrogen is greater than or equal to a first preset concentration, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen.
3. The control system of claim 1, wherein the control device is further configured to, after performing the step of controlling the first valve of the steam-water separator to discharge nitrogen, perform the following operations:
And controlling the first valve to close to stop discharging the nitrogen under the condition that the concentration of the nitrogen is smaller than a second preset concentration or the difference value between the current pressure at the outlet of the anode and the pressure is larger than or equal to a preset pressure difference, wherein the second preset concentration is smaller than the first preset concentration.
4. The control system of claim 2, wherein the control device is further configured to maintain the first valve in a closed state if either of the following two conditions are satisfied:
the liquid level height is greater than or equal to the first preset height and the concentration of the nitrogen is less than the first preset concentration; or the liquid level height is smaller than the first preset height.
5. The control system of claim 2, wherein the control device is further configured to control the first valve and the bypass valve for controlling air intake to be closed when the concentration of the nitrogen gas is greater than or equal to a third preset concentration and the increase in the liquid level height during the current round of purging is less than a preset increase, wherein the third preset concentration is greater than the first preset concentration.
6. The control system of claim 2, wherein the control device is further configured to:
controlling a second valve of the steam-water separator to be closed under the condition that the liquid level height is gradually increased and smaller than a second preset height or the liquid level height is gradually decreased and equal to the first preset height;
Controlling the second valve to be opened to discharge liquid water under the condition that the liquid level height is greater than or equal to the second preset height, wherein the second preset height is greater than the first preset height; or alternatively
And controlling the second valve to be opened in the case of receiving a stop signal, and controlling the second valve to be closed in the case of the liquid level equal to 0.
7. The control system of claim 6, wherein the steam-water separator comprises:
A housing including a first side and a second side disposed opposite each other;
an inlet provided on the first side for introducing a steam-water mixture;
A baffle plate, a first end of which is arranged below the inlet and a first gap is reserved between a second end of which and the second side surface, and the baffle plate is used for guiding liquid water in the steam-water mixture to enter a lower half space of the steam-water separator;
The baffle plate is obliquely arranged above the baffle plate and used for blocking the hydrogen in the steam-water mixture from flowing to the second side surface;
The first valve is arranged on the second side surface and is used for discharging nitrogen in the steam-water mixture;
The second valve is arranged at the bottom of the steam-water separator and is used for discharging the liquid water;
a concentration sensor for detecting the concentration of the nitrogen gas; and
And the liquid level sensor is used for detecting the liquid level height of the liquid water.
8. The control system of claim 7, wherein the steam-water separator further comprises:
And the chute is arranged at the bottom of the steam-water separator, the first end face of the chute is connected with the first side face, and a second gap is reserved between the second end face and the second side face.
9. The control system of claim 8, wherein an area of the first end face is greater than an area of the second end face.
10. The control system of claim 8, wherein the second valve is disposed at the second void on the bottom of the steam-water separator.
11. A control method for a fuel cell system, characterized in that the fuel cell system comprises: the control method comprises the following steps of:
receiving the concentration of nitrogen in the steam-water separator;
detecting a pressure at an anode outlet of the stack;
Recording the current pressure at the anode outlet under the condition that the concentration of the nitrogen is greater than or equal to a first preset concentration, determining a corresponding feedback value according to the current pressure and the corresponding relation between the pressure and the feedback value, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen;
calibrating a control signal for the air inlet valve according to the feedback value; and
Controlling the air inlet valve according to the calibrated control signal to regulate the hydrogen entering the electric pile,
Wherein the correspondence is calibrated by: simulating different pressure environments at the anode outlet, and measuring corresponding duty cycle increment when the first valve is opened.
12. The control method according to claim 11, characterized in that the control method further comprises:
Receiving the liquid level of liquid water in the steam-water separator; and
And under the condition that the liquid level height is greater than or equal to a first preset height and the concentration of the nitrogen is greater than or equal to a first preset concentration, recording the current pressure, determining a corresponding feedback value according to the current pressure, and controlling a first valve of the steam-water separator to be opened so as to discharge the nitrogen.
13. A fuel cell system, characterized in that the fuel cell system comprises: the control system for a fuel cell system according to any one of claims 1 to 10.
14. A construction machine, comprising: the fuel cell system according to claim 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310037067.1A CN116470104B (en) | 2023-01-10 | 2023-01-10 | Control system, control method, fuel cell system, and construction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310037067.1A CN116470104B (en) | 2023-01-10 | 2023-01-10 | Control system, control method, fuel cell system, and construction machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116470104A CN116470104A (en) | 2023-07-21 |
| CN116470104B true CN116470104B (en) | 2024-06-07 |
Family
ID=87175984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310037067.1A Active CN116470104B (en) | 2023-01-10 | 2023-01-10 | Control system, control method, fuel cell system, and construction machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116470104B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120261643B (en) * | 2025-06-05 | 2025-09-02 | 深蓝汽车科技有限公司 | Control method and device for nitrogen removal valve and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008269911A (en) * | 2007-04-19 | 2008-11-06 | Toyota Motor Corp | Fuel cell system and gas pressure adjustment method in fuel cell system |
| CN105742671A (en) * | 2014-12-11 | 2016-07-06 | 上海汽车集团股份有限公司 | Intermittent hydrogen discharge system for anode of fuel system and control method of intermittent hydrogen discharge system |
| CN114335626A (en) * | 2021-12-29 | 2022-04-12 | 山东国创燃料电池技术创新中心有限公司 | A kind of fuel cell hydrogen circulation system and hydrogen discharge and drainage method |
| CN114725453A (en) * | 2022-03-31 | 2022-07-08 | 西安交通大学 | Gas-water separator for fuel cell, hydrogen supply system and method for regulating and controlling nitrogen concentration |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9105888B2 (en) * | 2011-10-07 | 2015-08-11 | GM Global Technology Operations LLC | Anode purge and drain valve strategy for fuel cell system |
-
2023
- 2023-01-10 CN CN202310037067.1A patent/CN116470104B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008269911A (en) * | 2007-04-19 | 2008-11-06 | Toyota Motor Corp | Fuel cell system and gas pressure adjustment method in fuel cell system |
| CN105742671A (en) * | 2014-12-11 | 2016-07-06 | 上海汽车集团股份有限公司 | Intermittent hydrogen discharge system for anode of fuel system and control method of intermittent hydrogen discharge system |
| CN114335626A (en) * | 2021-12-29 | 2022-04-12 | 山东国创燃料电池技术创新中心有限公司 | A kind of fuel cell hydrogen circulation system and hydrogen discharge and drainage method |
| CN114725453A (en) * | 2022-03-31 | 2022-07-08 | 西安交通大学 | Gas-water separator for fuel cell, hydrogen supply system and method for regulating and controlling nitrogen concentration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116470104A (en) | 2023-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1897165B1 (en) | Fuel cell system and start-up method therefor | |
| US9209466B2 (en) | Fuel cell system | |
| EP1529320B1 (en) | Fuel cell system | |
| JP6400044B2 (en) | Fuel cell system and its operation stop method | |
| EP3506406B1 (en) | Fuel cell system, control method for fuel cell system, and computer program | |
| JP4852917B2 (en) | Fuel cell system | |
| CN116470104B (en) | Control system, control method, fuel cell system, and construction machine | |
| KR20210053088A (en) | Deterioration estimating system and hydrogen supply system and method including thereof | |
| JP2005310653A (en) | Fuel cell system | |
| US11563223B2 (en) | Method of starting operation of fuel cell system at low temperature, and the fuel cell system | |
| JP2012004032A (en) | Fuel cell system | |
| US20250112255A1 (en) | Method for operating a fuel cell system, and a control device | |
| EP1580830A2 (en) | Fuel cell control system and related method | |
| US11581555B2 (en) | System and method for fuel supply control for a fuel cell | |
| JP2007073280A (en) | Fuel cell system | |
| US8080342B2 (en) | Fuel cell system | |
| JP4561048B2 (en) | Fuel cell system | |
| JP4673605B2 (en) | Fuel cell system | |
| JP2020123496A (en) | Fuel cell system | |
| JP5034191B2 (en) | Fuel cell system | |
| JP2006049100A (en) | Fuel cell system | |
| JP2004111266A (en) | Fuel cell system | |
| CN120432580B (en) | Water storage capacity estimation method, fuel cell drain valve control method, system and vehicle | |
| CN219457676U (en) | Water separator and fuel cell system | |
| JP2024141886A (en) | Fuel Cell Systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |