CN112701324A - Control method of fuel cell injection device with proportional valve - Google Patents
Control method of fuel cell injection device with proportional valve Download PDFInfo
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- CN112701324A CN112701324A CN202110200172.3A CN202110200172A CN112701324A CN 112701324 A CN112701324 A CN 112701324A CN 202110200172 A CN202110200172 A CN 202110200172A CN 112701324 A CN112701324 A CN 112701324A
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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
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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
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04388—Pressure; Ambient pressure; Flow of anode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04537—Electric variables
- H01M8/04574—Current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04537—Electric variables
- H01M8/04604—Power, energy, capacity or load
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04955—Shut-off or shut-down of fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a control method of a fuel cell injection device with a proportional valve, wherein the injection device comprises the proportional valve and a switch valve, so that a path of hydrogen entering a galvanic pile is divided into two paths: route 1: hydrogen is injected into the low-pressure cavity from the high-pressure cavity through the switch valve and then directly enters the galvanic pile; route 2: the hydrogen flows from the high-pressure cavity to the medium-pressure cavity through the proportional valve and then enters the galvanic pile through the ejector. The control method provided by the invention responds to different working condition parameters of the galvanic pile by controlling the hydrogen proportion of the path 1 and the path 2, can effectively reduce the service time and frequency of the switch, reduces the problems of noise, sealing, cost, service life and the like in the integrated design of the hydrogen injection device and the ejector, simultaneously controls the pressure of the front end of the ejector by utilizing the proportional valve, ensures the return flow and the supply of part of fresh hydrogen, and quickly responds to the flow and pressure requirements of the galvanic pile by utilizing the switch valve.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a control method of a fuel cell injection device with a proportional valve.
Background
With the shortage of natural resources such as petroleum and coal in various countries in the world, clean energy such as wind energy, nuclear energy, solar energy and fuel cells are more and more valued by governments in various countries. China is a big country for coal reserves and consumption, and simultaneously China is a 'weak country' for petroleum and gas, a large amount of oil and gas import support is needed every year, and the development of new energy industry is a necessary result of complying with energy structure reform.
Fuel cells produce electrical energy directly from chemical reactions of fuel (pure hydrogen, methane, etc.) between 2 electrodes separated by a proton exchange membrane. Compared with gasoline engines and diesel engines, the fuel cell has extremely high energy utilization efficiency, and the emission is only water, so that the fuel cell has no pollution to the environment.
The traditional power system can release COx, NOx, SOx and other harmful gases and PM particles and other pollutants, and has low thermal efficiency and environmental pollution. A hydrogen fuel cell, which uses hydrogen element to perform reverse reaction of electrolyzed water, hydrogen and oxygen are supplied to an anode and a cathode respectively, hydrogen releases electrons under the action of a catalyst, hydrogen ions flow to the cathode through a proton exchange membrane, the electrons reach the cathode through external circulation to generate current, and the hydrogen ions are combined with the oxygen and the electrons at the cathode to generate water. The process of hydrogen fuel cell generation is an electrochemical reaction, which directly converts chemical energy into electrical energy, and the final product of the whole process is water. The hydrogen fuel cell is a new energy source with no pollution, no noise and high efficiency, and has great development potential.
In the hydrogen fuel cell system, most of the modes of supplying hydrogen are hydrogen circulation modes, unreacted hydrogen is recycled, and therefore the utilization rate of the hydrogen is improved, meanwhile, the hydrogen circulation can also improve the water balance in the galvanic pile, the occurrence of flooding in the galvanic pile is avoided, and the working efficiency of the galvanic pile is improved. However, the conventional hydrogen circulation system has many problems in use. Firstly, the molecular weight of hydrogen is small, hydrogen with certain pressure is easy to leak, and the sealing of hydrogen is a difficult problem in the working process of a hydrogen injector in the existing structure hydrogen circulation system. In the hydrogen circulation system of present structure, can have a hydrogen circulating pump, make hydrogen flow in hydrogen circulation system, if the efflux energy who produces when spouting hydrogen through the hydrogen sprayer drives the hydrogen flow, the structure of simplification hydrogen circulation system that will be very big cancels the circulating pump. When the supply pressure not established BY the eductor is insufficient, a configuration is generally employed in which low pressure hydrogen is introduced directly into the stack through a bypass (BY pass). The existing hydrogen injectors are all controlled BY a battery switch valve to control the flow and pressure entering an injection area or a bypass (BY pass).
The mechanical life of the membrane of the fuel cell stack and the pressure alternation of the two sides of the membrane are related, so that the pressure difference of the two sides of the membrane is maintained under a relatively constant working condition, and the hydrogen pressure is required to quickly respond to the requirements of a system under the conditions of quick loading and unloading and the like, so that two common schemes in the prior art are as follows:
1. the hydrogen injector is used for quickly responding to the supply of flow, the circulating pump is used for refluxing the hydrogen at the outlet of the galvanic pile, and meanwhile, the hydrogen is humidified, so that the hydrogen utilization rate is improved.
2. The mode of combining the hydrogen ejector and the ejector is adopted, the hydrogen ejector can rapidly respond to the supply of flow, the ejector is used for refluxing the hydrogen at the outlet of the galvanic pile, and meanwhile, the hydrogen is humidified, so that the utilization rate of the hydrogen is improved.
The two solutions described above have the following problems:
(1) noise exists in the electromagnetic valve, so that the hydrogen flow is not adaptive to the requirements of the galvanic pile;
(2) in order to adjust the hydrogen flow rate, the electromagnetic valve needs to be switched on and off at high frequency, so that the service life of the electromagnetic valve is influenced;
(3) the device has a complex structure and high manufacturing cost.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a control method of a fuel cell injection device with a proportional valve. Through the integrated design of combining the switch valve, the ejector and the proportional valve, the problems of noise, sealing, cost, service life and the like in the integrated design of the hydrogen injection device and the ejector are reduced. The front-end pressure entering the ejector is controlled by a proportional valve, so that the reflux quantity and part of fresh hydrogen are supplied, and the requirements of flow and pressure of the galvanic pile are quickly responded by a switch valve.
The invention provides a control method of a fuel cell injection device with a proportional valve, wherein the fuel cell injection device comprises the following steps: the device comprises a proportional valve, a switch valve, an ejector and a cavity, wherein the cavity comprises a high-pressure cavity, a medium-pressure cavity and a low-pressure cavity; the high-pressure cavity is connected with a hydrogen supply pipeline and is communicated with the low-pressure cavity through the switch valve, and an outlet of the low-pressure cavity is communicated with a pile hydrogen pile-entering pipeline; the high-pressure cavity is communicated with the medium-pressure cavity through the proportional valve, the medium-pressure cavity is connected with an inlet of the ejector, a jet orifice of the ejector is communicated with a pile hydrogen inlet pipeline, and a return inlet of the ejector is communicated with a pile hydrogen return pipeline;
the control method comprises the steps of monitoring working condition parameters of the fuel cell, and opening the switch valve when the working condition parameters exceed a threshold value so as to enable the switch valve and the proportional valve to work simultaneously; and when the working condition parameter is lower than the threshold value, closing the switch valve.
Specifically, the fuel cell injection device with the proportional valve provides two hydrogen stacking paths:
route 1: hydrogen is injected into the low-pressure cavity from the high-pressure cavity through the switch valve and then enters the galvanic pile;
route 2: hydrogen flows from the high-pressure cavity to the medium-pressure cavity through the proportional valve and enters the galvanic pile through the ejector;
by controlling the hydrogen ratio of the path 1 and the path 2, different working condition parameters of the galvanic pile can be responded, so that the service time and frequency of the switch are reduced.
Specifically, the operating condition parameters comprise one or more of current, power and hydrogen pressure required by the galvanic pile, and preferably the current.
Specifically, the control method specifically includes the following steps: acquiring working condition parameters, and comparing the working condition parameters with a preset threshold value; when the working condition parameter is larger than a preset threshold value, the switch valve is opened, the proportional valve takes the inlet pressure of the ejector as a control target, and the switch valve takes the inlet pressure of the galvanic pile as a control target; and when the working condition parameter does not exceed a preset threshold value, the switch valve is closed, and the proportional valve takes the inlet pressure of the galvanic pile as a control target.
Further, when the operating condition parameter is current, the threshold is preset to 295A.
According to the control method provided by the invention, the hydrogen flowing into the electric pile in the path 1 is controlled only by the switch valve, and the flow supply of the fuel cell can be quickly responded. Be used for backward flow pile export hydrogen through the ejector in route 2, improve the accuracy of hydrogen supply volume and the utilization ratio of hydrogen. Because the proportion of the hydrogen supplied by the path 2 is adjustable, the hydrogen proportion of the path 1 and the path 2 is controlled to respond to different working condition parameters of the galvanic pile, so that the service life of the switch can be shortened, the noise is reduced, and the service life is prolonged.
Specifically, when the operating condition parameters (which may be current, power, hydrogen pressure required by the stack, and the like) of the fuel cell are below a threshold value, the on-off valve is closed, the proportional valve is opened, the path 2 is adopted to provide hydrogen for the fuel cell, and the opening of the proportional valve is adjusted according to the requirement of the fuel cell stack; when the working condition parameters of the fuel cell exceed the threshold value, the switch valve is opened, the proportional valve takes the inlet pressure of the ejector as a control target, the switch valve takes the inlet pressure of the galvanic pile as a control target, and meanwhile, the path 1 and the path 2 are adopted to provide hydrogen for the fuel cell so as to meet the operation requirement of the fuel cell pile.
Compared with the prior art, the invention has the following effects:
(1) through the integrated design of combining the switch valve, the ejector and the proportional valve, the problems of noise, sealing, cost, service life and the like in the integrated design of the hydrogen injection device and the ejector are reduced.
(2) The front-end pressure entering the ejector is controlled by a proportional valve, so that the reflux quantity and part of fresh hydrogen are supplied, and the requirements of flow and pressure of the galvanic pile are quickly responded by a switch valve.
The device has simple structure, low manufacturing cost, convenient operation and reliable operation result.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a fuel cell eductor with a proportional valve according to the present invention;
fig. 2 is a flow chart of a method of controlling a fuel cell eductor with a proportional valve according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic structural diagram of an injector of a fuel cell with a proportional valve, which comprises a proportional valve 1, a switch valve 2, an injector 3 and a cavity, wherein the cavity comprises a high-pressure cavity 4, a medium-pressure cavity 5 and a low-pressure cavity 6; the high-pressure cavity 4 is communicated with the low-pressure cavity 6 through the switch valve 2, and an outlet 7 of the low-pressure cavity 6 is communicated with a pile hydrogen pile-entering pipeline; the high-pressure cavity 4 is communicated with the medium-pressure cavity 5 through the proportional valve 1, the medium-pressure cavity 5 is connected with an inlet 8 of the ejector 3, a jet orifice 9 of the ejector 3 is communicated with a pile entering pipeline of the galvanic pile hydrogen, and a backflow inlet 10 of the ejector 3 is communicated with a hydrogen backflow pipeline of the galvanic pile.
A first pressure sensor is arranged in the pile-entering pipeline of the hydrogen of the electric pile so as to monitor the inlet pressure of the electric pile. And a second pressure sensor is arranged at the inlet of the ejector to monitor the inlet pressure of the ejector. And a third pressure sensor is arranged at the jet orifice of the ejector so as to monitor the pressure at the jet orifice 9 of the ejector. The fuel cell injection device is further provided with a controller, and the opening or closing of the switch valve 2 and the opening of the proportional valve 1 are adjusted according to working condition parameters of the fuel cell, such as current, power and hydrogen pressure required by a galvanic pile. And all parts of the fuel cell injection device are connected in a sealing way.
By adopting the fuel cell injection device, two paths of hydrogen entering the stack are provided:
path 1, hydrogen is injected into a low-pressure cavity from a high-pressure cavity through a switch valve and then enters a galvanic pile;
and 2, hydrogen flows from the high-pressure cavity to the medium-pressure cavity through the proportional valve and enters the galvanic pile through the ejector.
The flow rate supply of the fuel cell can be quickly responded to in the path 1 by controlling the flow of hydrogen gas into the stack only by the switching valve. Be used for backward flow pile export hydrogen through the ejector in route 2, improve the accuracy of hydrogen supply volume and the utilization ratio of hydrogen. Because the proportion of the hydrogen supplied by the path 2 is adjustable, the hydrogen proportion of the path 1 and the path 2 is controlled to respond to different working condition parameters of the galvanic pile, so that the service life of the switch can be shortened, the noise is reduced, and the service life is prolonged.
Specifically, when the working condition parameters (which may be current, power, hydrogen pressure required by a stack, and the like) of the fuel cell are below a threshold value, the on-off valve of the injection device is closed, the proportional valve is opened, the path 2 is adopted to provide hydrogen for the fuel cell, and the opening of the proportional valve is adjusted according to the requirement of the fuel cell stack; when the working condition parameters of the fuel cell exceed the threshold value, the switch valve of the injection device is opened, the proportional valve takes the inlet pressure of the injector as a control target, the switch valve takes the inlet pressure of the galvanic pile as a control target, and meanwhile, the path 1 and the path 2 are adopted to provide hydrogen for the fuel cell so as to meet the requirements of the specific working conditions of the fuel cell pile.
FIG. 2 is a flow chart of a control method of the fuel cell injection device with the proportional valve when the working condition parameter of the fuel cell is current. As shown in fig. 2, when the threshold I0 of the fuel cell current is 295A, the method for controlling the injection device includes: the acquired current is compared with a preset threshold 295A; when the actual current is less than or equal to the preset value of 295A, the switch valve does not act and keeps closed, and the proportional valve takes the inlet pressure of the galvanic pile as a control target; and when the actual current is larger than the preset value of 295A, opening the switch valve, wherein the proportional valve takes the inlet pressure of the ejector as a control target, and the switch valve takes the inlet pressure of the galvanic pile as a control target.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A method of controlling a fuel cell eductor having a proportional valve, the fuel cell eductor comprising: the device comprises a proportional valve, a switch valve, an ejector and a cavity, wherein the cavity comprises a high-pressure cavity, a medium-pressure cavity and a low-pressure cavity; the high-pressure cavity is connected with a hydrogen supply pipeline and is communicated with the low-pressure cavity through the switch valve, and an outlet of the low-pressure cavity is communicated with a pile hydrogen pile-entering pipeline; the high-pressure cavity is communicated with the medium-pressure cavity through the proportional valve, the medium-pressure cavity is connected with an inlet of the ejector, a jet orifice of the ejector is communicated with a pile hydrogen inlet pipeline, and a return inlet of the ejector is communicated with a pile hydrogen return pipeline;
the control method comprises the steps of monitoring working condition parameters of the fuel cell, and opening the switch valve when the working condition parameters exceed a threshold value so as to enable the switch valve and the proportional valve to work simultaneously; and when the working condition parameter is lower than the threshold value, closing the switch valve.
2. The method of claim 1, wherein the controlling comprises: the working condition parameters comprise at least one of current, power and hydrogen pressure required by the galvanic pile.
3. The method of claim 1, wherein the controlling comprises: the control method specifically comprises the following steps:
acquiring working condition parameters, and comparing the working condition parameters with a preset threshold value;
when the working condition parameter is larger than a preset threshold value, the switch valve is opened, the proportional valve takes the inlet pressure of the ejector as a control target, and the switch valve takes the inlet pressure of the galvanic pile as a control target;
and when the working condition parameter does not exceed a preset threshold value, the switch valve is closed, and the proportional valve takes the inlet pressure of the galvanic pile as a control target.
4. The method of claim 1, wherein the controlling comprises: the working condition parameter is current, and the threshold value is 295A.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110200172.3A CN112701324A (en) | 2021-02-23 | 2021-02-23 | Control method of fuel cell injection device with proportional valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110200172.3A CN112701324A (en) | 2021-02-23 | 2021-02-23 | Control method of fuel cell injection device with proportional valve |
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| CN112701324A true CN112701324A (en) | 2021-04-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113964355A (en) * | 2021-10-29 | 2022-01-21 | 北京亿华通科技股份有限公司 | Detection control device and method of ejector and fuel cell system |
| CN114420970A (en) * | 2022-01-20 | 2022-04-29 | 宁波赛轲动力科技有限公司 | Integrated ejector, fuel cell hydrogen supply system and control method thereof |
| CN115207401A (en) * | 2022-09-14 | 2022-10-18 | 佛山市清极能源科技有限公司 | Hydrogen injection system of fuel cell and control method thereof |
| CN115832363A (en) * | 2022-12-12 | 2023-03-21 | 上海捷氢科技股份有限公司 | Fuel cell stack test control method and device and electronic equipment |
-
2021
- 2021-02-23 CN CN202110200172.3A patent/CN112701324A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113964355A (en) * | 2021-10-29 | 2022-01-21 | 北京亿华通科技股份有限公司 | Detection control device and method of ejector and fuel cell system |
| CN113964355B (en) * | 2021-10-29 | 2023-02-24 | 北京亿华通科技股份有限公司 | Detection control device and method of ejector and fuel cell system |
| CN114420970A (en) * | 2022-01-20 | 2022-04-29 | 宁波赛轲动力科技有限公司 | Integrated ejector, fuel cell hydrogen supply system and control method thereof |
| CN114420970B (en) * | 2022-01-20 | 2023-12-05 | 宁波赛轲动力科技有限公司 | Integrated ejector, fuel cell hydrogen supply system and control method thereof |
| CN115207401A (en) * | 2022-09-14 | 2022-10-18 | 佛山市清极能源科技有限公司 | Hydrogen injection system of fuel cell and control method thereof |
| CN115207401B (en) * | 2022-09-14 | 2022-12-09 | 佛山市清极能源科技有限公司 | Hydrogen injection system of fuel cell and control method thereof |
| CN115832363A (en) * | 2022-12-12 | 2023-03-21 | 上海捷氢科技股份有限公司 | Fuel cell stack test control method and device and electronic equipment |
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