CN115117397B - Control method and device of recycling fuel cell system and computer equipment - Google Patents

Control method and device of recycling fuel cell system and computer equipment Download PDF

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Publication number
CN115117397B
CN115117397B CN202210678329.8A CN202210678329A CN115117397B CN 115117397 B CN115117397 B CN 115117397B CN 202210678329 A CN202210678329 A CN 202210678329A CN 115117397 B CN115117397 B CN 115117397B
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oxygen
mixing cavity
control system
pressure
input
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CN115117397A (en
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徐领
徐梁飞
叶康
胡尊严
李建秋
欧阳明高
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Tsinghua University
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Tsinghua University
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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
    • 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
    • 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
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04992—Processes for controlling fuel cells or fuel cell systems characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
    • 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

Abstract

The application relates to a control method and device of a recycling fuel cell system and computer equipment. The method comprises the following steps: controlling hydrogen to be input into the combustion chamber through an anode control system; the cathode control system controls the first mixed gas to be input into the combustion chamber from the mixing cavity; the first mixed gas is obtained by mixing oxygen and nitrogen according to a first proportion; after the hydrogen and the mixed gas are subjected to combustion reaction in the combustion chamber to obtain combustion tail gas, controlling the combustion tail gas and oxygen to be input into a tail gas treatment device through a tail gas control system; controlling the oxygen and the combustion tail gas to perform catalytic reaction to obtain a second mixed gas; and the tail gas control system controls the second mixed gas to pass through a tail gas circulating pump and be input into the mixing cavity. By adopting the method, the recycling fuel cell can normally operate.

Description

Control method and device of recycling fuel cell system and computer equipment
Technical Field
The present application relates to the field of fuel cell technologies, and in particular, to a method and an apparatus for controlling a fuel cell system, and a computer device.
Background
With the development of underwater fuel cell technology, the application requirements of the underwater fuel cell are more and more increased. The underwater fuel cell is widely used as an oxyhydrogen fuel cell, the oxyhydrogen fuel cell generates electric energy through direct combustion reaction of hydrogen and oxygen by adopting pure oxygen as an oxidant of the fuel cell, and the control method of the oxyhydrogen fuel cell is to ensure the highest combustion efficiency of the oxyhydrogen fuel cell by controlling the input amount of the hydrogen and the oxygen and the input ratio of the hydrogen and the oxygen. However, pure oxygen tends to corrode cell components, resulting in the problem of a short life of the hydrogen-oxygen fuel cell.
In order to solve the problems, the recycling fuel cell is gradually developed, and the recycling fuel cell avoids the problem of strong pure oxygen corrosivity of the hydrogen-oxygen fuel cell by recycling three gases, namely hydrogen, oxygen and nitrogen, so that the service life of the fuel cell can be effectively prolonged. However, since the hydrogen-oxygen fuel cell and the recycle fuel cell operate in different manners, the control method of the hydrogen-oxygen fuel cell cannot be applied to the recycle fuel cell, and thus a control method of controlling the recycle fuel cell is urgently required.
Disclosure of Invention
In view of the above, it is necessary to provide a control method, apparatus and computer device for a recycling fuel cell system in view of the above technical problems.
In a first aspect, the present application provides a control method of a recirculating fuel cell system. The method comprises the following steps:
controlling hydrogen to be input into the combustion chamber through an anode control system; the cathode control system controls the first mixed gas to be input into the combustion chamber from the mixing cavity; the first mixed gas is obtained by mixing oxygen and nitrogen according to a first proportion;
after the hydrogen and the mixed gas are subjected to combustion reaction in the combustion chamber to obtain combustion tail gas, controlling the combustion tail gas and oxygen to be input into a tail gas treatment device through a tail gas control system; controlling the oxygen and the combustion tail gas to perform catalytic reaction to obtain a second mixed gas;
and controlling the second mixed gas to pass through a tail gas circulating pump by the tail gas control system and inputting the second mixed gas into the mixing cavity.
Optionally, before the first mixed gas is controlled by the cathode control system to be input into the combustion chamber from the mixing cavity, the method further includes:
controlling oxygen and nitrogen to be input into the mixing cavity through the cathode control system, and controlling the oxygen and the current mixed gas to be combusted in the combustion chamber; and adjusting the input amount of oxygen and nitrogen by judging the pressure of the mixing cavity to obtain a first mixed gas.
Optionally, the cathode control system controls oxygen and nitrogen to be input into a mixing cavity, and controls the oxygen and the current mixed gas to be combusted in the combustion chamber; through judging the pressure of mixing chamber, the input of adjustment oxygen and nitrogen gas to obtain first mist, include:
controlling oxygen to be input into the mixing cavity through the cathode control system, and controlling the oxygen and the current mixed gas to be combusted in the combustion chamber;
when the pressure of the mixing cavity meets the continuously-increased change condition within a first preset time period, the cathode control system controls oxygen to stop inputting into the mixing cavity and controls nitrogen to input into the mixing cavity;
when the pressure of the mixing cavity reaches a first pressure threshold value, the cathode control system controls nitrogen to stop being input into the mixing cavity and controls oxygen to be input into the mixing cavity;
and when the pressure of the mixing cavity meets the continuously-increased change condition within a second preset time period and the pressure of the mixing cavity reaches a second pressure threshold value, taking the gas in the mixing cavity as a first mixed gas.
Optionally, the method further includes:
and when the pressure of the mixing cavity does not meet the continuously increased change condition within a second preset time period, returning to execute the steps of controlling oxygen to be input into the mixing cavity through the cathode control system, controlling the oxygen and the current mixed gas to be in the combustion chamber, and performing combustion treatment.
Optionally, after the hydrogen and the mixed gas undergo a combustion reaction in the combustion chamber to obtain a combustion tail gas, the combustion tail gas and the oxygen are controlled by a tail gas control system to be input into a tail gas treatment device, the method further includes:
determining a target oxygen partial pressure corresponding to the current according to the current corresponding to the electric energy obtained by the combustion reaction and the corresponding relation between the current and the oxygen partial pressure; the oxygen partial pressure is the oxygen pressure of the mixing cavity;
determining an actual oxygen partial pressure according to the oxygen concentration in the mixing cavity and the pressure of the mixing cavity;
adjusting, by the cathode control system, the actual oxygen partial pressure to the target oxygen partial pressure based on a difference between the actual oxygen partial pressure and the target oxygen partial pressure.
Optionally, after the cathode control system adjusts the actual oxygen partial pressure to the target oxygen partial pressure according to the difference between the actual oxygen partial pressure and the target oxygen partial pressure, the method further includes:
and under the condition that the difference between the actual pressure in the mixing cavity and the target pressure in the mixing cavity is not larger than a first threshold value, and the difference between the target oxygen partial pressure and the actual oxygen partial pressure is not larger than a second threshold value, the cathode control system controls the nitrogen to be input into the mixing cavity until the actual pressure in the mixing cavity is detected to reach a preset pressure range.
Optionally, after the second mixed gas is controlled by the tail gas control system to pass through the tail gas circulating pump and be input into the mixing cavity, the method further includes:
when the fuel cell enters a working stopping stage, controlling to stop inputting nitrogen and oxygen into the combustion chamber through the cathode control system, and controlling the cathode circulating pump to work at a first preset rotating speed when the current is not greater than a preset current;
when the current is zero, the cathode circulating pump works at a second preset rotating speed, when the oxygen concentration of the mixing cavity is smaller than the preset oxygen concentration, the cathode circulating pump stops working, and the anode control system controls hydrogen to stop being input into the combustion chamber.
In a second aspect, the present application also provides a control apparatus for a recirculating fuel cell system. The device comprises:
the input module is used for controlling hydrogen to be input into the combustion chamber through the anode control system; the cathode control system controls the first mixed gas to be input into the combustion chamber from the mixing cavity; the first mixed gas is obtained by mixing oxygen and nitrogen according to a first proportion;
the combustion processing module is used for controlling the combustion tail gas and the oxygen to be input into a tail gas processing device through a tail gas control system after the hydrogen and the mixed gas are subjected to a combustion reaction in the combustion chamber to obtain the combustion tail gas; controlling the oxygen and the combustion tail gas to perform catalytic reaction to obtain a second mixed gas;
and the circulating module is used for inputting the second mixed gas into the mixing cavity through a tail gas circulating pump by the tail gas control system.
Optionally, the apparatus further comprises:
the first starting module is used for controlling oxygen and nitrogen to be input into the mixing cavity through the cathode control system, and controlling the oxygen and the current mixed gas to be combusted in the combustion chamber; and adjusting the input amount of oxygen and nitrogen by judging the pressure of the mixing cavity to obtain a first mixed gas.
Optionally, the first starting module is specifically configured to:
controlling oxygen to be input into the mixing cavity through the cathode control system, and controlling the oxygen and the current mixed gas to be combusted in the combustion chamber;
when the pressure of the mixing cavity meets the continuously-increased change condition within a first preset time period, the cathode control system controls oxygen to stop inputting into the mixing cavity and controls nitrogen to input into the mixing cavity;
when the pressure of the mixing cavity reaches a first pressure threshold value, the cathode control system controls nitrogen to stop being input into the mixing cavity and controls oxygen to be input into the mixing cavity;
and when the pressure of the mixing cavity meets the continuously-increased change condition within a second preset time period and the pressure of the mixing cavity reaches a second pressure threshold value, taking the gas in the mixing cavity as a first mixed gas.
Optionally, the apparatus further comprises:
and the second starting module is used for returning to execute the steps of controlling oxygen to be input into the mixing cavity through the cathode control system and controlling the oxygen and the current mixed gas to be in the combustion chamber for combustion processing when the pressure of the mixing cavity does not meet the continuously-rising change condition within a second preset time period.
Optionally, the apparatus further comprises:
the first operation module is used for determining the target oxygen partial pressure of the current according to the current corresponding to the electric energy obtained by the combustion reaction and the corresponding relation between the current and the oxygen partial pressure; the oxygen partial pressure is the oxygen pressure of the mixing cavity;
the second operation module is used for determining the actual oxygen partial pressure according to the oxygen concentration in the mixing cavity and the pressure of the mixing cavity;
and the third operation module is used for adjusting the actual oxygen partial pressure to the target oxygen partial pressure according to the difference value between the actual oxygen partial pressure and the target oxygen partial pressure through the cathode control system.
Optionally, the apparatus further comprises:
and the fourth operation module is used for controlling nitrogen to be input into the mixing cavity by the cathode control system under the conditions that the difference between the actual pressure in the mixing cavity and the target pressure in the mixing cavity is not larger than a first threshold value and the difference between the target oxygen partial pressure and the actual oxygen partial pressure is not larger than a second threshold value until the actual pressure in the mixing cavity is detected to reach a preset pressure range.
Optionally, the apparatus further comprises:
the first stopping module is used for controlling to stop inputting nitrogen and oxygen into the combustion chamber through the cathode control system when the fuel cell enters a working stopping stage, and controlling the cathode circulating pump to work at a first preset rotating speed when the current is not greater than a preset current;
and the second stopping module is used for enabling the cathode circulating pump to work according to a second preset rotating speed when the current is zero, enabling the cathode circulating pump to stop working when the oxygen concentration of the mixing cavity is less than the preset oxygen concentration, and enabling the anode control system to control hydrogen to stop inputting into the combustion chamber.
In a third aspect, the present application provides a computer device. The computer device comprises a memory storing a computer program and a processor implementing the steps of the method of any of the first aspects when the processor executes the computer program.
In a fourth aspect, the present application provides a computer-readable storage medium. On which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of the first aspects.
In a fifth aspect, the present application provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, performs the steps of the method of any one of the first aspects.
The control method, the control device and the computer equipment of the recycling fuel cell system control hydrogen to be input into the combustion chamber through the anode control system; the cathode control system controls the first mixed gas to be input into the combustion chamber from the mixing cavity; the first mixed gas is obtained by mixing oxygen and nitrogen according to a first proportion; after the hydrogen and the mixed gas are subjected to combustion reaction in the combustion chamber to obtain combustion tail gas, controlling the combustion tail gas and oxygen to be input into a tail gas treatment device through a tail gas control system; controlling the oxygen and the combustion tail gas to perform catalytic reaction to obtain a second mixed gas; and the tail gas control system controls the second mixed gas to pass through a tail gas circulating pump and be input into the mixing cavity. The working mode of the recycling fuel cell is controlled and adjusted by taking the working mode of the recycling fuel cell as a control logic and taking the anode control system, the cathode control system and the tail gas control system as an operation control system of the recycling fuel cell, so that the recycling fuel cell can normally operate.
Drawings
FIG. 1 is a schematic flow chart of a control method of a recycle fuel cell system in one embodiment;
FIG. 2 is a flow chart illustrating the control steps of the cathode control system during a shutdown phase in one embodiment;
FIG. 3 is a flowchart showing an example of control of the recycle fuel cell system in one embodiment;
fig. 4 is a block diagram showing the construction of a control device of the recycle fuel cell system in one embodiment;
FIG. 5 is a diagram of the internal structure of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
The control method of the recycling fuel cell system provided by the embodiment of the application can be applied to power supply equipment, and the power supply equipment can be any recycling fuel cell. The power supply equipment controls and adjusts the working mode of the recycling fuel cell by taking the working mode of the recycling fuel cell as a control logic and taking the anode control system, the cathode control system and the tail gas control system as the operation control system of the recycling fuel cell, so that the recycling fuel cell can normally operate.
In one embodiment, as shown in fig. 1, there is provided a control method of a recycling fuel cell system, which is described by taking an example of application of the method to a power supply apparatus, including the steps of:
step S101, controlling hydrogen to be input into a combustion chamber through an anode control system; and the first mixed gas is controlled to be input into the combustion chamber from the mixing cavity through a cathode control system.
The first mixed gas is obtained by mixing oxygen and nitrogen according to a first proportion.
In this embodiment, the anode control system includes a processor and an actuator, and the cathode control system includes a processor and an actuator. The anode control system is used for controlling hydrogen to be input into the anode combustion chamber, and the cathode control system is used for controlling oxygen and nitrogen to be input into the cathode combustion chamber according to a preset gas proportion.
When the recycling fuel cell enters the operation stage, the power supply equipment transmits a hydrogen conveying instruction to the actuator of the anode control system through the processor of the anode control system, and the actuator of the anode control system controls the valve for inputting hydrogen to be opened when receiving the hydrogen conveying instruction, so that the hydrogen is input into the anode combustion chamber. The power supply equipment transmits a command of conveying the first mixed gas to the cathode combustion chamber to the actuator of the cathode control system through the processor of the cathode control system, and when the actuator of the cathode control system receives the command of conveying the first mixed gas, the actuator of the cathode control system controls the valve of the mixing chamber to be opened, so that the first mixed gas is input into the cathode combustion chamber, and controls the oxygen valve to keep the opening state unchanged, so that oxygen is continuously input into the mixing chamber. The first mixed gas is a gas obtained by mixing oxygen and nitrogen at a first ratio.
And the processor of the anode control system is used for acquiring the running state of the anode of the recirculating fuel cell and carrying out processing operation according to the running state of the anode, so that a control instruction is issued to the actuator of the anode control system to ensure the normal running of the anode of the recirculating fuel cell. And the actuator of the anode control system is used for receiving a control command issued by the processor of the anode control system so as to control the anode of the recirculating fuel cell to normally operate.
And the processor of the cathode control system is used for acquiring the cathode running state of the recirculating fuel cell and carrying out processing operation according to the cathode running state, so that a control instruction is issued to the actuator of the cathode control system to ensure the normal running of the cathode of the recirculating fuel cell. And the actuator of the cathode control system is used for receiving a control command sent by the processor of the cathode control system, so that the cathode of the recirculating fuel cell is controlled to normally operate.
The combustor of the recirculating fuel cell comprises an anode combustor and a cathode combustor, wherein a layer of proton exchange membrane is further arranged between the anode combustor and the cathode combustor and is used for separating the anode combustor from the cathode combustor. The anode combustion chamber is used for receiving hydrogen, the cathode combustion chamber is used for receiving mixed gas, and in the operation process, the hydrogen of the anode combustion chamber permeates into the cathode combustion chamber through the proton exchange membrane so as to generate combustion reaction with the mixed gas in the cathode combustion chamber, and the mixed gas of the cathode combustion chamber cannot permeate into the anode combustion chamber through the proton exchange membrane.
Step S102, after the hydrogen and the mixed gas are subjected to a combustion reaction in the combustion chamber to obtain combustion tail gas, controlling the combustion tail gas and oxygen to be input into a tail gas treatment device through a tail gas control system; and controlling the oxygen and the combustion tail gas to perform catalytic reaction to obtain a second mixed gas.
In this embodiment, the power supply device controls the hydrogen valve to be continuously opened through the actuator of the anode control system, so that hydrogen is continuously input into the anode combustion chamber, the hydrogen in the anode combustion chamber permeates into the cathode combustion chamber through the proton exchange membrane, and generates a combustion reaction with the mixed gas in the cathode combustion chamber, and the cathode combustion chamber generates mixed tail gas in the combustion reaction process. And the energy conversion device of the power supply equipment converts heat energy generated in the combustion reaction process into electric energy and sends the obtained electric energy to the external equipment, thereby providing the electric energy for the external equipment. The pressure and gas concentration of the cathode combustion chamber are the same as the pressure and gas concentration in the mixing chamber in the state where the gas in the combustion chamber is in a combustion reaction. The anode combustor produces hydrogen off-gas during the combustion reaction.
The mixed tail gas generated by the cathode combustion chamber and the hydrogen tail gas generated by the anode combustion chamber are collectively called as combustion tail gas.
Power supply unit passes through tail gas control system's treater, assign the instruction of transmission burning tail gas to tail gas control system's executor, tail gas control system's executor is when receiving the instruction of transmission burning tail gas, the tail gas valve of control anode combustion chamber is opened, make the hydrogen tail gas input tail gas processing apparatus that the anode combustion chamber produced, and the tail gas valve of control cathode combustion chamber is opened, make the mixed tail gas input tail gas processing apparatus that the cathode combustion chamber produced, and control oxygen valve is opened, make oxygen input tail gas processing apparatus. Then, the oxygen, the hydrogen tail gas and the mixed tail gas in the tail gas treatment device are subjected to catalytic reaction to obtain a second mixed gas. The second mixed gas is a mixed gas containing oxygen and nitrogen.
The tail gas control system comprises a processor and an actuator, the processor of the tail gas control system is used for sending an instruction of transmitting combustion tail gas to the actuator of the tail gas control system at regular intervals, the actuator of the tail gas control system is used for controlling a tail gas valve of the anode combustion chamber and a tail gas valve of the cathode combustion chamber to be opened when receiving the instruction of transmitting the combustion tail gas sent by the processor of the tail gas control system, so that the combustion tail gas is transmitted to a tail gas treatment device, the tail gas treatment device is controlled to treat the combustion tail gas, and finally the tail gas treatment device is controlled to treat the second mixed gas to be transmitted to a tail gas circulating pump.
In another embodiment, the exhaust gas treatment device is constructed identically to the combustion chamber and the exhaust gas treatment device operates on the same principle as the combustion chamber. The power supply equipment controls hydrogen tail gas generated by the anode combustion chamber to be input into an anode treatment device of the tail gas treatment device through an actuator of the tail gas control system, inputs mixed tail gas generated by the cathode combustion chamber into a cathode treatment device of the tail gas treatment device, and then controls oxygen to be input into the cathode treatment device of the tail gas treatment device. The power supply equipment controls oxygen, hydrogen tail gas and mixed tail gas in the tail gas treatment device to carry out secondary combustion power generation reaction through the actuator controlled by the tail gas treatment device to obtain tail gas electric energy and second mixed gas, and the power supply equipment sends the tail gas electric energy to the external equipment so as to provide electric energy for the external equipment.
And S103, inputting the second mixed gas into the mixing cavity through a tail gas circulating pump by the tail gas control system.
In this embodiment, power supply unit passes through tail gas control system's executor, and control tail gas processing apparatus's gas output valve opens for the second mist transmits to the tail gas circulating pump. And the power supply equipment controls the second mixed gas to be input into the mixing cavity through the tail gas circulating pump and is fused with the first mixed gas in the mixing cavity.
Based on the scheme, the power supply equipment controls and adjusts the working modes of oxygen, hydrogen and nitrogen in the recycling fuel cell by taking the working mode of the recycling fuel cell as a control logic and taking the anode control system, the cathode control system and the tail gas control system as the operation control system of the recycling fuel cell, so that the recycling fuel cell can normally operate.
Optionally, before the first mixed gas is controlled by the cathode control system to be input into the combustion chamber from the mixing cavity, the method includes: controlling oxygen and nitrogen to be input into the mixing cavity through a cathode control system, and controlling the oxygen and the current mixed gas to be combusted in the combustion chamber; and adjusting the input amount of oxygen and nitrogen by judging the pressure of the mixing cavity, thereby obtaining a first mixed gas.
In this embodiment, the raw mixed gas includes nitrogen and oxygen. The power supply equipment sends an input oxygen instruction to an actuator of the cathode control system through a processor of the cathode control system, the actuator of the cathode control system controls an oxygen valve to be opened after receiving the input oxygen instruction, so that oxygen is input into the mixing cavity, the valve of the mixing cavity is controlled to be opened, gas in the mixing cavity is input into the cathode combustion chamber, and then the oxygen in the combustion chamber and the mixed gas are combusted. The power supply equipment judges the pressure of the current mixing cavity, and sends an instruction of inputting oxygen or nitrogen to an actuator of the cathode control system through a processor of the cathode control system under the condition of meeting a preset condition, the actuator of the cathode control system controls an oxygen valve or a nitrogen valve to be opened according to the instruction, so that the oxygen or the nitrogen is input into the mixing cavity, and controls the valve of the mixing cavity to be opened, so that the gas in the mixing cavity is input into the cathode combustion chamber, and the first mixed gas is obtained. The specific control input process will be described in detail later.
Based on the scheme, the cathode control system coordinates the coordinated supply amount of the nitrogen and the oxygen, so that the oxygen concentration and the pressure value in the mixing cavity are ensured to reach the target values, and a foundation is provided for the follow-up recirculated fuel cell to reach the maximum efficiency of combustion power generation in the operation stage.
Optionally, the cathode control system controls oxygen and nitrogen to be input into the mixing cavity, and controls oxygen and the current mixed gas to be combusted in the combustion chamber; through judging the pressure of hybrid chamber, adjust the input of oxygen and nitrogen gas to obtain first mist, include: controlling oxygen to be input into the mixing cavity through a cathode control system, and controlling the oxygen and the current mixed gas to be combusted in the combustion chamber; when the pressure of the mixing cavity meets the continuously-increased change condition within a first preset time period, the cathode control system controls oxygen to stop inputting into the mixing cavity and controls nitrogen to input into the mixing cavity; when the pressure of the mixing cavity reaches a first pressure threshold value, the cathode control system controls nitrogen to stop inputting into the mixing cavity and controls oxygen to input into the mixing cavity; and when the pressure of the mixing cavity meets the continuously-increased change condition within a second preset time period and the pressure of the mixing cavity reaches a second pressure threshold value, taking the gas in the mixing cavity as a first mixed gas.
In this embodiment, when hydrogen stops being input into the anode combustion chamber, the power supply device sends an input oxygen instruction to the actuator of the cathode control system through the processor of the cathode control system, and after receiving the input oxygen instruction, the actuator of the cathode control system controls the oxygen valve to open, so that oxygen is input into the mixing chamber, and gas in the mixing chamber is input into the cathode combustion chamber. In the combustion chamber, the oxygen and the current mixed gas are subjected to combustion treatment, and hydrogen in the cathode combustion chamber is consumed. The power supply equipment presets a change condition meeting continuous rising in a first time period, when the pressure in the mixing chamber meets the change condition meeting continuous rising in the first time period, the power supply equipment sends an instruction of stopping inputting oxygen and inputting nitrogen to an actuator of the cathode control system through a processor of the cathode control system, and after the actuator of the cathode control system receives the instruction of stopping inputting oxygen and inputting nitrogen, an oxygen valve is controlled to be closed, and a nitrogen valve is controlled to be opened, so that oxygen stops being input into the mixing chamber, and nitrogen starts being input into the mixing chamber. The power supply equipment presets a first pressure threshold, when the pressure in the mixing cavity reaches the first pressure threshold, the power supply equipment sends a command of stopping inputting nitrogen and inputting oxygen to an actuator of the cathode control system through a processor of the cathode control system, after the actuator of the cathode control system receives the command of stopping inputting nitrogen and inputting oxygen, the actuator controls a nitrogen valve to be closed, an oxygen valve to be opened, and the nitrogen stops being input into the mixing cavity and the oxygen starts being input into the mixing cavity. The power supply equipment presets a second preset time period to meet the continuously-rising change condition and a second pressure threshold, and under the condition that the pressure of the mixing chamber meets the continuously-rising change condition in the second preset time period and reaches the second pressure threshold, the current mixed gas in the mixing chamber forms first mixed gas. The order of the oxygen and nitrogen inputs is not limited.
Specifically, oxygen supply stage 1: the permeated hydrogen is consumed by supplying oxygen to the cathode combustion chamber, so that the gas component of the cathode combustion chamber is mainly nitrogen, and the subsequent regulation and control of the partial pressure of the nitrogen are facilitated. The pressure of the mixing cavity is reduced due to the fact that liquid water is generated by the reaction of the oxygen and the hydrogen, therefore, if the pressure of the mixing cavity is continuously increased after the time T1, the hydrogen of the cathode can be considered to be completely consumed, the oxygen supply can be stopped, and the nitrogen supply stage is started.
A nitrogen supply stage: first, a target pressure P2 of nitrogen supply needs to be calculated, where the target total cathode pressure in the start-up phase is P1, the target oxygen concentration is C1, the actual total mixing chamber pressure at the beginning of the nitrogen supply phase is P11, and the actual oxygen concentration is C11, and if other gases (such as water vapor) except nitrogen and oxygen are ignored, the target mixing chamber pressure in the nitrogen supply phase is 2= P1 × (1-C1) + P11 × C11. When the total pressure in the mixing chamber reaches P2, the partial pressure of nitrogen in the mixing chamber is considered to have reached the target value, and the oxygen supply stage 2 may be entered.
Oxygen supply stage 2: the total pressure of the mixing chamber is brought to P1 by the supply of oxygen, at which point the mixing chamber can theoretically reach the target pressure and the target oxygen concentration. And in the oxygen supply stage 2, whether hydrogen remains in the cathode combustion chamber is checked, the checking condition is that the pressure of the mixing cavity is continuously increased within the time of continuous T2, if the result of the condition is yes, oxygen is supplied until the total pressure of the cathode reaches P1, the control flow of the cathode subsystem in the starting stage is ended, wherein P1 and C1 can be automatically set according to requirements, and the rotating speed N1, the opening degrees O1 and O2, the time T1 and the time T2 need to be calibrated according to experiments and are set to be proper values.
Based on the scheme, the input proportion of the oxygen and the nitrogen is controlled, so that the component proportion of the mixed gas in the mixing cavity is optimized, and a foundation is provided for ensuring the efficiency of combustion power generation in the subsequent operation stage.
Optionally, the method further includes:
and when the pressure of the mixing cavity does not meet the continuously increased change condition within the second preset time period, returning to execute the step of controlling oxygen to be input into the mixing cavity through the cathode control system, controlling the oxygen and the current mixed gas to be in the combustion chamber, and performing combustion treatment.
In this embodiment, the power supply device presets a second time period to satisfy the continuously increasing change condition and a second pressure threshold, and when the pressure of the mixing chamber reaches the second pressure threshold but the pressure of the mixing chamber is within the second preset time period to satisfy the continuously increasing change condition, the power supply device returns to control the oxygen to be input into the mixing chamber through the cathode control system, and controls the oxygen and the current mixed gas to be in the combustion chamber, so as to perform the combustion processing step.
Specifically, whether hydrogen remains in the cathode combustion chamber is checked in the oxygen supply stage 2, the checking condition is that the pressure of the mixing cavity is continuously increased within continuous time T2, if the condition is judged to be negative, the cathode combustion chamber is considered to have hydrogen remains, the control flow returns to the oxygen supply stage 1, and the step of consuming hydrogen is executed again.
Based on above-mentioned scheme, when reaching the target pressure through judging the hybrid chamber, whether the pressure of hybrid chamber satisfies the continuous change condition that rises in the second period to judge whether the cathode combustion chamber has hydrogen to remain, thereby ensure the purity of the gaseous environment of the cathode combustion chamber of follow-up start-up stage, avoid because remain hydrogen and lead to the combustion efficiency of combustion chamber lower, influence recirculating engine's work efficiency.
Optionally, after the hydrogen and the mixed gas are subjected to a combustion reaction in the combustion chamber to obtain combustion tail gas, the combustion tail gas and the oxygen are controlled by a tail gas control system to be input into a tail gas treatment device; and controlling the oxygen and the combustion tail gas to perform catalytic reaction to obtain a second mixed gas, and further comprising: determining the target oxygen partial pressure of the current according to the current corresponding to the electric energy obtained by the combustion reaction and the corresponding relation between the current and the oxygen partial pressure; the oxygen partial pressure is the oxygen pressure of the mixing cavity; determining the actual oxygen partial pressure according to the oxygen concentration in the mixing cavity and the pressure of the mixing cavity; and adjusting the actual oxygen partial pressure to the target oxygen partial pressure by a cathode control system according to the difference value between the actual oxygen partial pressure and the target oxygen partial pressure.
In this embodiment, the power supply device presets a corresponding relationship between the oxygen partial pressure and the current, and determines the target oxygen partial pressure of the recycle fuel cell under the current condition by detecting the current transmitted from the recycle fuel cell to the external device. The power supply equipment obtains the actual oxygen partial pressure in the current mixing cavity by detecting the oxygen concentration in the mixing cavity and the total pressure of the mixing cavity, and obtains the oxygen partial pressure difference value required to be adjusted by the current oxygen partial pressure by calculating the difference value between the target oxygen partial pressure and the actual oxygen partial pressure. And the power supply equipment adjusts the actual oxygen partial pressure to the target oxygen partial pressure through the cathode control system according to the oxygen partial pressure difference value.
Specifically, the target oxygen partial pressure is obtained by referring to a graph of the relationship between the oxygen partial pressure and the current, based on the output current of the recycle fuel cell. The oxygen flow consumed by the cathode combustion chamber is in direct proportion to the output current; the oxygen partial pressure difference value is obtained by calculating the difference between the target oxygen partial pressure and the actual oxygen partial pressure and inputting the difference into an oxygen partial pressure controller, and the actual oxygen partial pressure of the cathode can be obtained by multiplying the actual total pressure of the cathode by the actual oxygen concentration of the cathode.
Based on the scheme, the oxygen concentration in the mixing cavity is ensured to be at the target oxygen concentration by adjusting the oxygen partial pressure in the mixing cavity, so that the working efficiency of the recycling fuel cell is ensured.
Optionally, after adjusting the actual oxygen partial pressure to the target oxygen partial pressure according to the difference between the actual oxygen partial pressure and the target oxygen partial pressure by the cathode control system, the method further includes:
and under the condition that the difference value between the actual pressure in the mixing cavity and the target pressure in the mixing cavity is not larger than a first threshold value and the difference value between the target oxygen partial pressure and the actual oxygen partial pressure is not larger than a second threshold value, the cathode control system controls the nitrogen to be input into the mixing cavity until the actual pressure in the mixing cavity is detected to reach a preset pressure range.
In this embodiment, a part of the nitrogen may permeate through the proton exchange membrane to the anode combustion chamber under the driving of the concentration gradient, so that the nitrogen concentration in the cathode combustion chamber is insufficient, and the oxygen concentration in the cathode combustion chamber is affected. Therefore, when the power supply equipment is in an operation stage, the total pressure of the mixing cavity and the oxygen partial pressure difference value are monitored in real time, the power supply equipment presets a first threshold value of the total pressure difference value of the mixing cavity and a second threshold value of the oxygen partial pressure difference value of the mixing cavity, under the condition that the difference value between the actual pressure in the mixing cavity and the target pressure in the mixing cavity is not larger than the first threshold value and the difference value between the target oxygen partial pressure and the actual oxygen partial pressure is not larger than the second threshold value, the power supply equipment sends an input nitrogen instruction to an actuator of the cathode control system through a processor of the cathode control system, and after the actuator of the cathode control system receives the input nitrogen instruction, the actuator controls a nitrogen valve to be opened, so that nitrogen is input into the mixing cavity, controls a valve of the mixing cavity to be opened, so that gas in the mixing cavity is input into the cathode combustion chamber, and the oxygen concentration in the cathode combustion chamber is kept in dynamic balance. The method comprises the steps that a power supply device presets a pressure range, when the power supply device detects that actual pressure in a mixing chamber reaches the preset pressure range, the power supply device controls a processor of a cathode control system to send a nitrogen input stopping instruction to an actuator of the cathode control system, and after the actuator of the cathode control system receives the nitrogen input stopping instruction, a nitrogen valve is controlled to be closed, so that nitrogen stops being input into the mixing chamber.
Specifically, it is determined that the oxygen partial pressure difference is suitable for preventing the actual total pressure of the cathode from being lower than the target value due to the lower oxygen partial pressure rather than the lower nitrogen partial pressure, and at this time, if the nitrogen is supplemented, the nitrogen in the cathode is excessive. It should be noted that the nitrogen permeating from the cathode to the anode is discharged into the tail gas treatment device along with the opening of the tail gas discharge valve, and is conveyed back to the mixing chamber by the tail gas circulating pump after passing through the tail gas treatment device, so that the nitrogen inside the whole recirculating fuel cell system reaches dynamic balance, therefore, the nitrogen supplement is only performed in a period of time after the system is started, and the time interval between the nitrogen supplement and the nitrogen supplement is gradually lengthened.
Based on the scheme, the oxygen partial pressure difference value in the mixing cavity and the total pressure value in the mixing cavity are detected, so that nitrogen is input, the oxygen concentration of the cathode combustion chamber of the recycling fuel cell is ensured to keep dynamic balance, and the working efficiency of the recycling fuel cell is ensured.
Optionally, as shown in fig. 2, after the second mixed gas is input into the mixing chamber through the tail gas circulating pump by the tail gas control system, the method further includes:
step S201, when the fuel cell enters a working stopping stage, the nitrogen and oxygen are controlled to be stopped from being input into the combustion chamber through the cathode control system, and when the current is not more than the preset current, the cathode circulating pump is controlled to work according to a first preset rotating speed.
And S202, when the current is zero, the cathode circulating pump works according to a second preset rotating speed, and when the oxygen concentration of the mixing cavity is smaller than the preset oxygen concentration, the cathode circulating pump stops working, and the anode control system controls hydrogen to stop inputting into the combustion chamber.
In this embodiment, when the recycling fuel cell enters the stop operation phase, the power supply device sends a command of stopping inputting nitrogen and oxygen to the actuator of the cathode control system through the processor of the cathode control system, and after receiving the command of stopping inputting nitrogen and oxygen, the actuator of the cathode control system controls the nitrogen valve and the oxygen valve to be closed, so that nitrogen and oxygen stop being input into the mixing chamber. When the output current of the recirculating fuel cell reaches the preset current value, the power supply device sends an instruction that the cathode circulating pump works according to a first preset rotating speed to an actuator of the cathode control system through a processor of the cathode control system, the actuator of the cathode control system controls the cathode circulating pump to work according to the first preset rotating speed after receiving the instruction that the cathode circulating pump works according to the first preset rotating speed, and at the moment, the hydrogen and original residual mixed gas in the combustion chamber still undergo combustion reaction. When the output current of the recirculating fuel cell is 0, the power supply equipment sends an instruction that the cathode circulating pump works at a second preset rotating speed to an actuator of the cathode control system through a processor of the cathode control system, the actuator of the cathode control system controls the cathode circulating pump to work at the second preset rotating speed after receiving that the cathode circulating pump works at the second preset rotating speed, and at the moment, hydrogen in the combustion chamber and residual mixed gas after the secondary combustion reaction still perform catalytic reaction to consume oxygen in the mixed gas. The method comprises the steps that an oxygen concentration value is preset by power supply equipment, when the oxygen concentration in a mixing cavity reaches the preset oxygen concentration value, the power supply equipment sends a command of stopping a cathode circulating pump to an actuator of a cathode control system through a processor of the cathode control system, the actuator of the cathode control system controls the cathode circulating pump to stop working after receiving the command of stopping the cathode circulating pump, the actuator of an anode control system sends a command of stopping hydrogen input to the actuator of the anode control system through the processor of the anode control system, and the actuator of the anode control system controls a hydrogen valve to close after receiving the command of stopping hydrogen input, so that hydrogen stops being input into an anode combustion chamber.
Based on the scheme, the residual oxygen in the mixing cavity is consumed, so that the condition that each part of the recycling fuel cell is exposed to the oxygen for a long time to generate an oxidation reaction is avoided, and the service life of the recycling fuel cell is prolonged.
The present application also provides a control example of a recycling fuel cell system, and as shown in fig. 3, the specific processing includes the steps of:
step S301, controlling hydrogen to be input into a combustion chamber through an anode control system.
And step S302, controlling oxygen to be input into the mixing cavity through the cathode control system, and controlling the oxygen and the current mixed gas to be combusted in the combustion chamber.
Step S303, when the pressure of the mixing cavity meets the continuously-increased change condition within a first preset time period, the cathode control system controls oxygen to stop inputting into the mixing cavity and controls nitrogen to input into the mixing cavity.
And step S304, when the pressure of the mixing cavity reaches a first pressure threshold value, controlling the nitrogen to stop inputting into the mixing cavity and controlling the oxygen to input into the mixing cavity by the cathode control system.
Step S305, judging whether the pressure of the mixing cavity meets the continuously rising change condition within a second preset time period when the pressure of the mixing cavity reaches a second pressure threshold value.
If yes, go to step S306; if not, the step S302 is executed in a returning way.
Step S306, the gas in the mixing cavity is used as the first mixed gas.
And step S307, controlling the first mixed gas to be input into the combustion chamber from the mixing cavity through the cathode control system.
And step S308, in the combustion chamber, inputting combustion tail gas obtained by combustion reaction of the hydrogen and the mixed gas into a tail gas treatment device through a tail gas control system.
Step S309, determining the target oxygen partial pressure of the current according to the current corresponding to the electric energy obtained by the combustion reaction and the corresponding relation between the current and the oxygen partial pressure.
Step S310, determining the actual oxygen partial pressure according to the oxygen concentration in the mixing cavity and the pressure of the mixing cavity.
In step S311, the cathode control system adjusts the actual oxygen partial pressure to the target oxygen partial pressure according to the difference between the actual oxygen partial pressure and the target oxygen partial pressure.
In step S312, under the condition that the difference between the actual pressure in the mixing chamber and the target pressure in the mixing chamber is not greater than the first threshold and the difference between the target oxygen partial pressure and the actual oxygen partial pressure is not greater than the second threshold, the cathode control system controls the nitrogen gas to be input into the mixing chamber until the actual pressure in the mixing chamber is detected to reach the preset pressure range.
Step S313, the tail gas control system controls oxygen to be input into the tail gas treatment device; and controlling the oxygen to perform catalytic reaction with the combustion tail gas to obtain a second mixed gas.
And step S314, controlling the second mixed gas to pass through a tail gas circulating pump through a tail gas control system, and inputting the second mixed gas into the mixing cavity.
And step S315, when the fuel cell enters a working stopping stage, controlling to stop inputting nitrogen and oxygen into the combustion chamber through the cathode control system, and controlling the cathode circulating pump to work according to a first preset rotating speed when the current is not more than the preset current.
And step S316, when the current is zero, the cathode circulating pump works at a second preset rotating speed, and when the oxygen concentration of the mixing cavity is less than the preset oxygen concentration, the cathode circulating pump stops working, and the anode control system controls hydrogen to stop inputting into the combustion chamber.
It should be understood that, although the steps in the flowcharts related to the above embodiments are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the above embodiments may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.
Based on the same inventive concept, the embodiment of the present application also provides a control device of a recycling fuel cell system for implementing the control method of the recycling fuel cell system related to the above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so specific limitations in one or more embodiments of the control device of the recycling fuel cell system provided below can be referred to the limitations on the control method of the recycling fuel cell system in the above, and are not described again here.
In one embodiment, as shown in fig. 4, there is provided a control device of a recycle fuel cell system, including: an input module 410, a combustion processing module 420, and a cycle module 430, wherein:
an input module 410 for controlling the input of hydrogen into the combustor via the anode control system; the cathode control system controls the first mixed gas to be input into the combustion chamber from the mixing cavity; the first mixed gas is obtained by mixing oxygen and nitrogen according to a first proportion;
the combustion processing module 420 is used for inputting combustion tail gas obtained by combustion reaction of hydrogen and mixed gas into the tail gas processing device through the tail gas control system in the combustion chamber; the tail gas control system controls oxygen to be input into the tail gas treatment device; controlling the oxygen and the combustion tail gas to perform catalytic reaction to obtain a second mixed gas;
and the circulation module 430 is configured to input the second mixed gas into the mixing chamber through the tail gas circulation pump by the tail gas control system.
Optionally, the apparatus further comprises:
the first starting module is used for controlling oxygen and nitrogen to be input into the mixing cavity through the cathode control system and controlling the oxygen and the current mixed gas to be combusted in the combustion chamber; and adjusting the input amount of oxygen and nitrogen by judging the pressure of the mixing cavity to obtain a first mixed gas.
Optionally, the first starting module is specifically configured to:
controlling oxygen to be input into the mixing cavity through a cathode control system, and controlling the oxygen and the current mixed gas to be combusted in the combustion chamber;
when the pressure of the mixing cavity meets the continuously rising change condition within a first preset time period, the cathode control system controls oxygen to stop inputting into the mixing cavity and controls nitrogen to input into the mixing cavity;
when the pressure of the mixing cavity reaches a first pressure threshold value, the cathode control system controls nitrogen to stop inputting into the mixing cavity and controls oxygen to input into the mixing cavity;
and when the pressure of the mixing cavity meets the continuously-rising change condition within a second preset time period and reaches a second pressure threshold value, taking the gas in the mixing cavity as a first mixed gas.
Optionally, the apparatus further comprises:
and the second starting module is used for returning to execute the step of controlling oxygen to be input into the mixing cavity through the cathode control system and controlling the oxygen and the current mixed gas to be in the combustion chamber for combustion processing when the pressure of the mixing cavity does not meet the continuously-increased change condition within a second preset time period.
Optionally, the apparatus further comprises:
the first operation module is used for determining the target oxygen partial pressure of the current according to the current corresponding to the electric energy obtained by the combustion reaction and the corresponding relation between the current and the oxygen partial pressure; the oxygen partial pressure is the oxygen pressure of the mixing cavity;
the second operation module is used for determining the actual oxygen partial pressure according to the oxygen concentration in the mixing cavity and the pressure of the mixing cavity;
and the third operation module is used for adjusting the actual oxygen partial pressure to the target oxygen partial pressure according to the difference value between the actual oxygen partial pressure and the target oxygen partial pressure through the cathode control system.
Optionally, the apparatus further comprises:
and the fourth operation module is used for controlling the nitrogen to be input into the mixing cavity by the cathode control system under the condition that the difference value between the actual pressure in the mixing cavity and the target pressure in the mixing cavity is not larger than the first threshold value and the difference value between the target oxygen partial pressure and the actual oxygen partial pressure is not larger than the second threshold value until the actual pressure in the mixing cavity is detected to reach the preset pressure range.
Optionally, the apparatus further comprises:
the first stopping module is used for controlling to stop inputting nitrogen and oxygen into the combustion chamber through the cathode control system when the fuel cell enters a working stopping stage, and controlling the cathode circulating pump to work according to a first preset rotating speed when the current is not greater than the preset current;
and the second stopping module is used for enabling the cathode circulating pump to work according to a second preset rotating speed when the current is zero, and enabling the cathode circulating pump to stop working when the oxygen concentration of the mixing cavity is smaller than the preset oxygen concentration, and enabling the anode control system to control hydrogen to stop inputting into the combustion chamber.
The respective modules in the control device of the above-described recirculating fuel cell system may be realized in whole or in part by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a power supply device, and its internal structure diagram may be as shown in fig. 5. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program to run on the non-volatile storage medium. The communication interface of the computer device is used for communicating with an external power supply device in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a control method of a recirculating fuel cell system. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the configuration shown in fig. 5 is a block diagram of only a portion of the configuration associated with the present application, and is not intended to limit the computing device to which the present application may be applied, and that a particular computing device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In an embodiment, a computer device is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the above method embodiments when executing the computer program.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, carries out the steps in the above-described method embodiments.
It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by hardware instructions of a computer program, which may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. Any reference to memory, databases, or other media used in the embodiments provided herein can include at least one of non-volatile and volatile memory. The nonvolatile memory may include a Read-only memory (ROM), a magnetic tape, a floppy disk, a flash memory, an optical memory, a high-density embedded nonvolatile memory, a resistive random access memory (ReRAM), a Magnetic Random Access Memory (MRAM), a Ferroelectric Random Access Memory (FRAM), a Phase Change Memory (PCM), a graphene memory, and the like. Volatile memory can include Random Access Memory (RAM), external cache memory, or the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims (10)

1. A control method of a recirculating fuel cell system, characterized by comprising:
controlling hydrogen to be input into the combustion chamber through an anode control system;
controlling the oxygen input-mixing cavity and controlling the oxygen and current mixed gas to carry out combustion treatment in the combustion chamber through a cathode control system;
when the pressure of the mixing cavity meets the continuously rising change condition within a first preset time period, the cathode control system controls oxygen to stop inputting into the mixing cavity and controls nitrogen to input into the mixing cavity;
when the pressure of the mixing cavity reaches a first pressure threshold value, the cathode control system controls nitrogen to stop inputting into the mixing cavity and controls oxygen to input into the mixing cavity;
when the pressure of the mixing cavity meets a continuously-increased change condition within a second preset time period and the pressure of the mixing cavity reaches a second pressure threshold value, taking the gas in the mixing cavity as a first mixed gas;
controlling the first mixed gas to be input into the combustion chamber from the mixing cavity through a cathode control system; the first mixed gas is obtained by mixing oxygen and nitrogen according to a first proportion;
after the hydrogen and the mixed gas are subjected to a combustion reaction in the combustion chamber to obtain combustion tail gas, controlling the combustion tail gas and oxygen to be input into a tail gas treatment device through a tail gas control system; controlling the oxygen and the combustion tail gas to perform catalytic reaction to obtain a second mixed gas;
and controlling the second mixed gas to pass through a tail gas circulating pump by the tail gas control system and inputting the second mixed gas into the mixing cavity.
2. The method of claim 1, further comprising:
and when the pressure of the mixing cavity does not meet the continuously increased change condition within a second preset time period, returning to execute the steps of controlling oxygen to be input into the mixing cavity through the cathode control system, controlling the oxygen and the current mixed gas to be in the combustion chamber, and performing combustion treatment.
3. The method according to claim 1, further comprising, after the hydrogen and the mixed gas are subjected to a combustion reaction in the combustion chamber to obtain a combustion exhaust gas, controlling the combustion exhaust gas and oxygen by an exhaust gas control system to be fed into an exhaust gas treatment device, further comprising:
determining a target oxygen partial pressure corresponding to the current according to the current corresponding to the electric energy obtained by the combustion reaction and the corresponding relation between the current and the oxygen partial pressure; the oxygen partial pressure is the oxygen pressure of the mixing cavity;
determining the actual oxygen partial pressure according to the oxygen concentration in the mixing cavity and the pressure of the mixing cavity;
adjusting, by the cathode control system, the actual oxygen partial pressure to the target oxygen partial pressure based on a difference between the actual oxygen partial pressure and the target oxygen partial pressure.
4. The method of claim 3, wherein after adjusting the actual oxygen partial pressure to the target oxygen partial pressure based on a difference between the actual oxygen partial pressure and the target oxygen partial pressure by the cathode control system, further comprising:
and under the condition that the difference between the actual pressure in the mixing cavity and the target pressure in the mixing cavity is not larger than a first threshold value, and the difference between the target oxygen partial pressure and the actual oxygen partial pressure is not larger than a second threshold value, the cathode control system controls the nitrogen to be input into the mixing cavity until the actual pressure in the mixing cavity is detected to reach a preset pressure range.
5. The method of claim 3, wherein the controlling the second mixed gas through the tail gas circulating pump by the tail gas control system further comprises, after the second mixed gas is input into the mixing chamber:
when the fuel cell enters a working stopping stage, controlling to stop inputting nitrogen and oxygen into the combustion chamber through the cathode control system, and controlling the cathode circulating pump to work at a first preset rotating speed when the current is not more than a preset current;
when the current is zero, the cathode circulating pump works at a second preset rotating speed, when the oxygen concentration of the mixing cavity is smaller than the preset oxygen concentration, the cathode circulating pump stops working, and the anode control system controls hydrogen to stop being input into the combustion chamber.
6. A control device of a recirculating fuel cell system, characterized by comprising:
the input module is used for controlling hydrogen to be input into the combustion chamber through the anode control system; controlling the oxygen input-mixing cavity and controlling the oxygen and current mixed gas to carry out combustion treatment in the combustion chamber through a cathode control system; when the pressure of the mixing cavity meets the continuously-increased change condition within a first preset time period, the cathode control system controls oxygen to stop inputting into the mixing cavity and controls nitrogen to input into the mixing cavity; when the pressure of the mixing cavity reaches a first pressure threshold value, the cathode control system controls nitrogen to stop being input into the mixing cavity and controls oxygen to be input into the mixing cavity; when the pressure of the mixing cavity meets a continuously-increased change condition within a second preset time period and the pressure of the mixing cavity reaches a second pressure threshold value, taking the gas in the mixing cavity as a first mixed gas; the cathode control system controls the first mixed gas to be input into the combustion chamber from the mixing cavity; the first mixed gas is obtained by mixing oxygen and nitrogen according to a first proportion;
the combustion processing module is used for controlling the combustion tail gas and the oxygen to be input into a tail gas processing device through a tail gas control system after the hydrogen and the mixed gas are subjected to a combustion reaction in the combustion chamber to obtain the combustion tail gas; controlling the oxygen and the combustion tail gas to perform catalytic reaction to obtain a second mixed gas;
and the circulating module is used for inputting the second mixed gas into the mixing cavity through the tail gas circulating pump by the tail gas control system.
7. The apparatus of claim 6, further comprising:
and the second starting module is used for returning to execute the steps of controlling oxygen to be input into the mixing cavity through the cathode control system and controlling the oxygen and the current mixed gas to be in the combustion chamber for combustion processing when the pressure of the mixing cavity does not meet the continuously-increased change condition within a second preset time period.
8. The apparatus of claim 6, further comprising:
the first operation module is used for determining the target oxygen partial pressure of the current according to the current corresponding to the electric energy obtained by the combustion reaction and the corresponding relation between the current and the oxygen partial pressure; the oxygen partial pressure is the oxygen pressure of the mixing cavity;
the second operation module is used for determining the actual oxygen partial pressure according to the oxygen concentration in the mixing cavity and the pressure of the mixing cavity;
and the third operation module is used for adjusting the actual oxygen partial pressure to the target oxygen partial pressure according to the difference value between the actual oxygen partial pressure and the target oxygen partial pressure through the cathode control system.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 5.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.
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