CN113745572A - Fuel cell hydrogen system and control method thereof - Google Patents
Fuel cell hydrogen system and control method thereof Download PDFInfo
- Publication number
- CN113745572A CN113745572A CN202010466756.0A CN202010466756A CN113745572A CN 113745572 A CN113745572 A CN 113745572A CN 202010466756 A CN202010466756 A CN 202010466756A CN 113745572 A CN113745572 A CN 113745572A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- fuel cell
- purge valve
- controller
- pipeline
- 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.)
- Pending
Links
Images
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
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
-
- 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
- H01M8/04313—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
- H01M8/04388—Pressure; Ambient pressure; Flow of anode reactants at the inlet or inside the fuel cell
-
- 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
- H01M8/04537—Electric variables
- H01M8/04574—Current
- H01M8/04589—Current of fuel cell stacks
-
- 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
- H01M8/04746—Pressure; Flow
- H01M8/04761—Pressure; Flow of fuel cell exhausts
-
- 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 invention provides a fuel cell hydrogen system and a control method thereof, the fuel cell hydrogen system comprises an electric pile, a three-way pipeline, a first pipeline, a water separator, a hydrogen circulation component, a tail discharge component and a controller, wherein the first end of the three-way pipeline is communicated with a hydrogen source, the second end of the three-way pipeline is communicated with a hydrogen inlet of the electric pile, the third end of the three-way pipeline is communicated with the hydrogen circulation component, the water separator is communicated with a hydrogen outlet of the electric pile through the first pipeline, the hydrogen circulation component is communicated with the third end of the three-way pipeline and an exhaust port of the water separator, the tail discharge component is communicated with a water outlet of the water separator, and the controller is electrically connected with the tail discharge component. The invention has the advantages that: compared with the existing hydrogen system of the hydrogen fuel cell, the hydrogen system of the hydrogen fuel cell has the advantages that one purging valve is omitted, the structural arrangement of the hydrogen system of the hydrogen fuel cell is simplified, and the occupied space is reduced; the proportion of the drainage time and the exhaust time is judged and controlled by controlling one purge valve.
Description
Technical Field
The invention relates to the field of fuel cells, in particular to a fuel cell hydrogen system and a control method thereof.
Background
The hydrogen fuel cell automobile technology is gradually developed and matured, and as a new energy automobile with zero pollution and zero emission, the hydrogen fuel cell automobile has increasingly entered a traffic system and is widely accepted by the public. The fuel cell system comprises subsystems and parts such as a fuel cell stack, an air system (components such as an air compressor, a throttle valve and the like), a hydrogen system (components such as a hydrogen bottle, a flow control device and a purging flow control valve and the like), a cooling subsystem (a thermostat, a radiator and a water pump) and the like. The hydrogen system provides hydrogen with proper flow, pressure, temperature, humidity and concentration for the galvanic pile and exhausts water generated by electrochemical reaction, thereby avoiding the galvanic pile from being flooded by water to influence the service life of the galvanic pile. The pressure and flow of hydrogen in the galvanic pile are generally regulated by adopting a flow control device in a hydrogen system, so that the pressure of the hydrogen changes along with the pressure of the air, the pressure difference at two sides of the electrolyte is kept stable, and the service life and the performance of the electrolyte are ensured; in addition, the opening time of the purge valve is controlled to discharge water generated by the reactor reaction and nitrogen diffused from the cathode side due to concentration steps and membrane leakage.
Fig. 1 shows a conventional hydrogen system for a hydrogen fuel cell, which includes a mechanical pressure reducing valve 201, a first three-way pipe 202, a stack 203, a first pipe 204, a water separator 205, the hydrogen fuel cell system comprises a second pipeline 206, a first purge valve 207, a second three-way pipeline 208, a second purge valve 209 and a hydrogen circulating pump 210, wherein a mechanical pressure reducing valve 201 is communicated with a first end of the first three-way pipeline 202, a second end of the first three-way pipeline 202 is communicated with a hydrogen inlet of the galvanic pile 203, a third end of the first three-way pipeline 202 is communicated with the hydrogen circulating pump 210, a water separator 205 is communicated with a hydrogen outlet of the galvanic pile 203 through a first pipeline 204, an exhaust port of the water separator 205 is communicated with the first purge valve 207 through the second pipeline 206, a drain port of the water separator 205 is communicated with a first end of the second three-way pipeline 208, a second end of the second three-way pipeline 208 is communicated with the second purge valve 209, and a third end of the second three-way pipeline 208 is communicated with the hydrogen circulating pump 210. As shown in fig. 1, in the current hydrogen system, a mechanical control valve 201 is used at the hydrogen inlet end of the stack to control the hydrogen supply flow and pressure, and two purge valves are used at the tail discharge end of the stack to respectively perform the functions of gas discharge and water discharge.
The hydrogen system in the prior art has the disadvantages that two purge valves are required to be used for water drainage and gas exhaust respectively, so that the hydrogen system has more pipelines and occupies large space. This also adds complexity to the structural arrangement for space-limited fuel cell vehicles.
In view of the foregoing, it would be desirable to provide a fuel cell hydrogen system and control method thereof that overcomes the deficiencies of the prior art.
Disclosure of Invention
The present invention is directed to a fuel cell hydrogen system and a control method thereof that overcome the disadvantages of the prior art. The object of the present invention is achieved by the following technical means.
One embodiment of the invention provides a fuel cell hydrogen system, which comprises a stack, a three-way pipeline and a first pipeline, the hydrogen circulation assembly is communicated with a hydrogen outlet of the galvanic pile through the first pipeline, the hydrogen circulation assembly is communicated with a third end of the three-way pipeline and an exhaust port of the water distributor, the tail discharge assembly is communicated with a water outlet of the water distributor, the controller is electrically connected with the tail discharge assembly, the controller prolongs the opening time of the tail discharge assembly when judging that the hydrogen flow entering the tail discharge assembly is less than a preset threshold value, and the controller closes the tail discharge assembly when judging that the hydrogen flow entering the tail discharge assembly is greater than or equal to the preset threshold value.
According to the fuel cell hydrogen system provided by the above embodiment of the present invention, the fuel cell hydrogen system further includes a second pipeline and a flow control valve, the flow control valve is communicated with a hydrogen gas source through the second pipeline, the first end of the three-way pipeline is communicated with the flow control valve, the controller is electrically connected to the flow control valve, and the controller controls the opening time of the flow control valve.
According to the fuel cell hydrogen system provided by the above embodiment of the invention, the hydrogen circulation component comprises a third pipeline and a hydrogen circulation pump, the hydrogen circulation pump is communicated with the exhaust port of the water separator through the third pipeline, and the third end of the three-way pipeline is communicated with the hydrogen circulation pump.
According to the fuel cell hydrogen system provided by the above embodiment of the invention, the tail exhaust component comprises a fourth pipeline, a purge valve and a fifth pipeline, the purge valve is communicated with the water outlet of the water separator through the fourth pipeline, the fifth pipeline is communicated with the purge valve, and hydrogen and water from the water separator are discharged out of the fuel cell hydrogen system through the fourth pipeline, the purge valve and the fifth pipeline in sequence.
According to the hydrogen system of the fuel cell provided by the above embodiment of the invention, the controller determines the opening period and the time of each opening of the purge valve according to a current value output by the stack, the controller obtains the hydrogen flow passing through the purge valve, the controller prolongs the time of each opening of the purge valve when the controller judges that the hydrogen flow does not reach the threshold, and the controller closes the purge valve when the controller judges that the hydrogen flow reaches or exceeds the preset threshold.
According to the fuel cell hydrogen system provided by one of the above-described embodiments of the present invention, the controller calculates the opening time of the flow control valve using an open-loop control algorithm or a closed-loop control algorithm according to the current value output from the stack, the preset target current value, the actual stack-entering hydrogen pressure entering the stack, and the preset target stack-entering hydrogen pressure to control the hydrogen flow entering the stack.
One embodiment of the present invention provides a control method of a hydrogen system of a fuel cell, the exhaust liquid discharge control method of the fuel cell including the steps of:
step 1: detecting the current value output by the electric pile;
step 2: checking a current calibration table according to a current value output by the galvanic pile to obtain the opening period of the purge valve and the time for opening the purge valve each time;
and step 3: obtaining the flow of hydrogen through a purge valve;
and 4, step 4: judging whether the hydrogen flow passing through the purge valve is smaller than a preset threshold value, and if so, executing a step 5; if not, executing the step 6;
and 5: keeping the purge valve open and prolonging the time of opening the purge valve each time, and then executing the step 3;
step 6: the purge valve is closed.
The fuel cell hydrogen system and the control method thereof have the advantages that: compared with the existing hydrogen system of the hydrogen fuel cell, the hydrogen system of the hydrogen fuel cell has the advantages that one purging valve is omitted, the structural arrangement of the hydrogen system of the hydrogen fuel cell is simplified, and the occupied space is reduced; the proportion of the drainage time and the exhaust time is judged and controlled by controlling one purge valve; the hydrogen inlet end of the pile is provided with a flow control valve, and a controller can control the opening time of the flow control valve, so that the closed-loop control of the hydrogen flow and the pressure entering the pile is possible.
Drawings
The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only for illustrating the technical solutions of the present invention and are not intended to limit the scope of the present invention. In the figure:
FIG. 1 shows a schematic diagram of a prior art fuel cell hydrogen system;
FIG. 2 shows a schematic diagram of a fuel cell hydrogen system according to one embodiment of the invention;
fig. 3 shows a flowchart of a control method of a fuel cell hydrogen system according to an embodiment of the invention.
Detailed Description
Fig. 2-3 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. Some conventional aspects have been simplified or omitted for the purpose of teaching the present invention. Those skilled in the art will appreciate that variations or substitutions from these embodiments will fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Thus, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.
Fig. 2 shows a schematic diagram of a fuel cell hydrogen system according to an embodiment of the invention. As shown in fig. 2, wherein the fuel cell hydrogen system includes a stack 101, a three-way pipe 102, a first pipe 103, the hydrogen recovery system comprises a water separator 104, a hydrogen circulation component 105, a tail exhaust component 106 and a controller 107, wherein a first end of a three-way pipeline 102 is communicated with a hydrogen source, a second end of the three-way pipeline 102 is communicated with a hydrogen inlet of the galvanic pile 101, a third end of the three-way pipeline 102 is communicated with the hydrogen circulation component 105, the water separator 104 is communicated with a hydrogen outlet of the galvanic pile 101 through a first pipeline 103, the hydrogen circulation component 105 is communicated with the third end of the three-way pipeline 102 and an exhaust port of the water separator 104, the tail exhaust component 106 is communicated with an exhaust port of the water separator 104, the controller 107 is electrically connected with the tail exhaust component 106, the controller 107 prolongs the opening time of the tail exhaust component 106 when judging that the hydrogen flow entering the tail exhaust component 106 is smaller than a preset threshold value, and the controller 107 closes the tail exhaust component 106 when judging that the hydrogen flow entering the tail exhaust component 106 is larger than or equal to the preset threshold value.
According to the hydrogen system of the fuel cell provided by the embodiment of the invention, hydrogen from a hydrogen source enters the electric pile 101 to react with oxygen to generate electric energy and generate water, the reacted residual hydrogen and water enter the water separator 104 through the first pipeline 103, the water and part of the residual hydrogen are discharged from the water outlet of the water separator 104 through the tail discharge component 106, and the residual hydrogen without water enters the electric pile again after being mixed with the hydrogen from the hydrogen source through the hydrogen circulation component 105 and the three-way pipeline 102 from the gas outlet of the water separator 104.
According to the fuel cell hydrogen system provided by the above embodiment of the present invention, when the hydrogen flow entering the tail pipe assembly 106 is less than the preset threshold, the tail pipe assembly 106 is in the water drainage stage, and the controller 107 increases the opening time of the purge valve to avoid the fuel cell hydrogen system from draining water; when the hydrogen flow rate entering the tail assembly 106 is greater than or equal to the preset threshold, the tail assembly 106 is in the exhaust phase, and the controller 107 closes the tail assembly 106 to prevent the excessive hydrogen from being exhausted out of the fuel cell hydrogen system to cause waste.
According to the fuel cell hydrogen system provided by one embodiment of the invention, the fuel cell hydrogen system further comprises a second pipeline 108 and a flow control valve 109, the flow control valve 109 is communicated with a hydrogen gas source through the second pipeline 108, the first end of the three-way pipeline 102 is communicated with the flow control valve 109, the controller 107 is electrically connected with the flow control valve 109, and the controller 107 controls the opening time of the flow control valve 109.
According to the hydrogen system of the fuel cell provided by the above embodiment of the present invention, the hydrogen circulation assembly 105 includes a third pipeline 105a and a hydrogen circulation pump 105b, the hydrogen circulation pump 105b is communicated with the exhaust port of the water separator 104 through the third pipeline 105a, and the third end of the three-way pipeline 102 is communicated with the hydrogen circulation pump 105 b.
According to the fuel cell hydrogen system provided by the above embodiment of the invention, the tail pipe assembly 106 comprises a fourth pipeline 106a, a purge valve 106b and a fifth pipeline 106c, the purge valve 106b is communicated with the water outlet of the water separator 104 through the fourth pipeline 106a, the fifth pipeline 106c is communicated with the purge valve 106b, and the hydrogen and water from the water separator 104 are discharged out of the fuel cell hydrogen system through the fourth pipeline 106a, the purge valve 106b and the fifth pipeline 106 c.
According to the hydrogen system of the fuel cell provided by one embodiment of the present invention, the controller 107 determines the opening period and the time of each opening of the purge valve 106b according to a current value lookup table output by the stack 101, the controller 107 obtains the hydrogen flow passing through the purge valve 106b, the controller 107 prolongs the time of each opening of the purge valve 106b when the controller 107 determines that the hydrogen flow does not reach a threshold, and the controller 107 closes the purge valve 106b when the controller 107 determines that the hydrogen flow reaches or exceeds a preset threshold.
According to the fuel cell hydrogen system provided in one embodiment of the present invention, the controller 107 calculates the opening time of the flow control valve 109 using an open-loop control algorithm or a closed-loop control algorithm according to the current value output from the stack 101, the preset target current value, the actual stack-entering hydrogen pressure entering the stack 101, and the preset target stack-entering hydrogen pressure, so as to control the hydrogen flow entering the stack 101.
According to the fuel cell hydrogen system provided by the above embodiment of the present invention, the open-loop control algorithm refers to a method that does not feed back the control result to influence the current control, and generally depends on a parameter value calibrated in advance, such as a table lookup method.
According to the fuel cell hydrogen system provided by the above embodiment of the present invention, the closed-loop control algorithm refers to a method for controlling the input end by using the controlled output result as a feedback parameter, and the method influencing the current control usually depends on the previously calibrated parameter values for control, for example: PI algorithm or PID algorithm, etc., the calculation formula being as
Wherein u is1(t) is the duty cycle of the flow control valve 109, based on u, the controller 1071(t) controlling the opening time of the flow control valve 109, e1(t) is the difference between the actually measured in-pile hydrogen flow rate and the preset target in-pile hydrogen flow rate, Ff1For feedforward parameters precalibrated in dependence on the output current of the stack, Kp1For an adjustable proportionality coefficient pre-calibrated according to the output current of the stack, Ki1For an adjustable integral coefficient, T, pre-calibrated according to the output current of the stacki1Is the integration time constant.
Fig. 3 shows a flowchart of a fuel cell hydrogen system control method according to an embodiment of the invention. As shown in fig. 3, the exhaust gas liquid discharge control method of the fuel cell includes a plurality of steps of:
step 1: detecting the current value output by the electric pile;
step 2: checking a current calibration table according to a current value output by the galvanic pile to obtain the opening period of the purge valve and the time for opening the purge valve each time;
and step 3: obtaining the flow of hydrogen through a purge valve;
and 4, step 4: judging whether the hydrogen flow passing through the purge valve is smaller than a preset threshold value, and if so, executing a step 5; if not, executing the step 6;
and 5: keeping the purge valve open and prolonging the time of opening the purge valve each time, and then executing the step 3;
step 6: the purge valve is closed.
The fuel cell hydrogen system and the control method thereof have the advantages that: compared with the existing hydrogen system of the hydrogen fuel cell, the hydrogen system of the hydrogen fuel cell has the advantages that one purging valve is omitted, the structural arrangement of the hydrogen system of the hydrogen fuel cell is simplified, and the occupied space is reduced; the proportion of the drainage time and the exhaust time is judged and controlled by controlling one purge valve; the hydrogen inlet end of the pile is provided with a flow control valve, and a controller can control the opening time of the flow control valve, so that the closed-loop control of the hydrogen flow and the pressure entering the pile is possible.
It will of course be realised that whilst the foregoing has been given by way of illustrative example of this invention, all such and other modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope and ambit of this invention as is herein set forth. Therefore, while this invention has been described with reference to preferred embodiments, it is not intended that the novel apparatus be limited thereby, but on the contrary, it is intended to cover various modifications and equivalent arrangements included within the broad scope of the above disclosure and the appended claims.
Claims (7)
1. A fuel cell hydrogen system is characterized by comprising an electric pile, a three-way pipeline and a first pipeline, the hydrogen circulation assembly is communicated with a hydrogen outlet of the galvanic pile through the first pipeline, the hydrogen circulation assembly is communicated with a third end of the three-way pipeline and an exhaust port of the water distributor, the tail discharge assembly is communicated with a water outlet of the water distributor, the controller is electrically connected with the tail discharge assembly, the controller prolongs the opening time of the tail discharge assembly when judging that the hydrogen flow entering the tail discharge assembly is less than a preset threshold value, and the controller closes the tail discharge assembly when judging that the hydrogen flow entering the tail discharge assembly is greater than or equal to the preset threshold value.
2. A fuel cell hydrogen system in accordance with claim 1 further comprising a second line and a flow control valve, the flow control valve in communication with the hydrogen gas source via the second line, the three-way line having a first end in communication with the flow control valve, a controller in electrical communication with the flow control valve, the controller controlling the on-time of the flow control valve.
3. The fuel cell hydrogen system according to claim 2, wherein the hydrogen circulation assembly comprises a third pipeline and a hydrogen circulation pump, the hydrogen circulation pump is communicated with the exhaust port of the water separator through the third pipeline, and the third end of the three-way pipeline is communicated with the hydrogen circulation pump.
4. The fuel cell hydrogen system of claim 3 wherein the tail assembly includes a fourth line, a purge valve and a fifth line, the purge valve being in communication with the drain of the water separator via the fourth line, the fifth line being in communication with the purge valve, hydrogen and water from the water separator being exhausted from the fuel cell hydrogen system via the fourth line, the purge valve and the fifth line in sequence.
5. The fuel cell hydrogen system of claim 4, wherein the controller determines the opening period and the time of each opening of the purge valve according to a current value output by the stack, the controller obtains the hydrogen flow passing through the purge valve, the controller prolongs the time of each opening of the purge valve when the controller determines that the hydrogen flow does not reach a threshold, and the controller closes the purge valve when the controller determines that the hydrogen flow reaches or exceeds a preset threshold.
6. The fuel cell hydrogen system according to claim 4, wherein the controller calculates an opening time of the flow control valve using an open-loop control algorithm or a closed-loop control algorithm according to a current value output from the stack, a preset target current value, an actual stack-entering hydrogen pressure entering the stack, and a preset target stack-entering hydrogen pressure to control the hydrogen flow entering the stack.
7. A fuel cell hydrogen system control method characterized by comprising the steps of:
step 1: detecting the current value output by the electric pile;
step 2: checking a current calibration table according to a current value output by the galvanic pile to obtain the opening period of the purge valve and the time for opening the purge valve each time;
and step 3: obtaining the flow of hydrogen through a purge valve;
and 4, step 4: judging whether the hydrogen flow passing through the purge valve is smaller than a preset threshold value, and if so, executing a step 5; if not, executing the step 6;
and 5: keeping the purge valve open and prolonging the time of opening the purge valve each time, and then executing the step 3;
step 6: the purge valve is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466756.0A CN113745572A (en) | 2020-05-28 | 2020-05-28 | Fuel cell hydrogen system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466756.0A CN113745572A (en) | 2020-05-28 | 2020-05-28 | Fuel cell hydrogen system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113745572A true CN113745572A (en) | 2021-12-03 |
Family
ID=78724065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010466756.0A Pending CN113745572A (en) | 2020-05-28 | 2020-05-28 | Fuel cell hydrogen system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113745572A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361539A (en) * | 2022-01-04 | 2022-04-15 | 一汽解放汽车有限公司 | Exhaust control method and liquid discharge control method of tail gas exhaust circulation system |
| CN114883614A (en) * | 2022-07-11 | 2022-08-09 | 佛山市清极能源科技有限公司 | Self-adaptive exhaust method of fuel cell system |
| CN115064728A (en) * | 2022-07-11 | 2022-09-16 | 山东华清动力科技有限公司 | Hydrogen circulating device for fuel cell |
-
2020
- 2020-05-28 CN CN202010466756.0A patent/CN113745572A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361539A (en) * | 2022-01-04 | 2022-04-15 | 一汽解放汽车有限公司 | Exhaust control method and liquid discharge control method of tail gas exhaust circulation system |
| CN114361539B (en) * | 2022-01-04 | 2024-01-09 | 一汽解放汽车有限公司 | Exhaust control method of tail exhaust circulation system and liquid discharge control method thereof |
| CN114883614A (en) * | 2022-07-11 | 2022-08-09 | 佛山市清极能源科技有限公司 | Self-adaptive exhaust method of fuel cell system |
| CN115064728A (en) * | 2022-07-11 | 2022-09-16 | 山东华清动力科技有限公司 | Hydrogen circulating device for fuel cell |
| CN115064728B (en) * | 2022-07-11 | 2024-02-23 | 山东华清动力科技有限公司 | Hydrogen circulation device for fuel cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7824815B2 (en) | Fuel cell system | |
| KR102651959B1 (en) | Hydrogen supply control system and control method of fuel cell | |
| CN113745572A (en) | Fuel cell hydrogen system and control method thereof | |
| KR102217210B1 (en) | Fuel cell system | |
| JP5273251B2 (en) | Method for controlling water content of fuel cell and fuel cell system | |
| JP4577313B2 (en) | Fuel cell system and fuel cell operating method | |
| JP2004055287A (en) | Hydrogen purge control device | |
| JP2003151593A (en) | Fuel cell system | |
| CN113471477B (en) | Fuel cell cooling water loop temperature control system and control method thereof | |
| JP2019114351A (en) | Fuel cell system and control method thereof | |
| US7354670B2 (en) | Fuel cell with fuel gas adjustment mechanism | |
| JP2008269841A (en) | Fuel cell system | |
| CN113130942B (en) | Fuel cell hydrogen circulation system and fuel cell vehicle | |
| JP2008300165A (en) | Fuel cell system and its air flow-rate control method | |
| JP6079227B2 (en) | Fuel cell system | |
| JP2016091609A (en) | Fuel cell system and control method for fuel cell system | |
| JP7038301B2 (en) | Fuel cell system and how to operate the fuel cell system | |
| JP4372523B2 (en) | Fuel cell control device | |
| CN212209664U (en) | Fuel cell hydrogen system | |
| JP5135665B2 (en) | Fuel cell system | |
| JP2004178990A (en) | Oxidant flow rate control method of fuel cell system | |
| KR20230133076A (en) | Method and system for correcting offset of hydrogen pressure sensor in fuel cell | |
| JP2009158268A (en) | Fuel cell system | |
| JP6094214B2 (en) | Fuel cell system | |
| JP6028347B2 (en) | Fuel cell system |
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 |