CN111261906A - Hydrogen supply discharge protection system of fuel cell - Google Patents
Hydrogen supply discharge protection system of fuel cell Download PDFInfo
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- CN111261906A CN111261906A CN201811456985.3A CN201811456985A CN111261906A CN 111261906 A CN111261906 A CN 111261906A CN 201811456985 A CN201811456985 A CN 201811456985A CN 111261906 A CN111261906 A CN 111261906A
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- 239000000446 fuel Substances 0.000 title claims abstract description 128
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000001257 hydrogen Substances 0.000 title claims abstract description 48
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 48
- 238000006243 chemical reaction Methods 0.000 claims abstract description 60
- 238000012544 monitoring process Methods 0.000 claims abstract description 38
- 238000005265 energy consumption Methods 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 15
- 238000010248 power generation Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000013589 supplement Substances 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
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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
- H01M8/04611—Power, energy, capacity or load of the individual 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—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
- H01M8/04664—Failure or abnormal function
- H01M8/04671—Failure or abnormal function of the individual 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
- H01M8/04694—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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a hydrogen supply discharge protection system of a fuel cell in the technical field of fuel cells, which comprises a fuel cell module, an electric quantity monitoring module, a conversion connection module and a conversion control module; the electric quantity monitoring module, the conversion connection module and the conversion control module are respectively connected with each group of fuel cell modules; the fuel cell module is used for converting chemical energy into electric energy; the electric quantity monitoring module is used for monitoring the electric quantity residual condition of the fuel cell and sending the electric quantity residual information to the conversion control module and the conversion connection module; the conversion connecting module is connected with the energy leading-in module. The invention realizes the power supply use of the energy consumption module by using the parallel connection replacement type power supply and discharge mode of a plurality of groups of fuel cell modules, can effectively protect the fuel cell modules, and avoids the phenomenon of different degrees of damage of the fuel cell caused by over discharge while hydrogen supply of the fuel cell.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a hydrogen supply discharge protection system of a fuel cell.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, fuel and oxygen used for the fuel cell are taken as materials without mechanical transmission parts, so that no noise raw materials are generated, and the discharged harmful gas is very little; acoustic pollution. It follows that fuel cells are the most promising power generation technology from the viewpoint of energy conservation and ecological environment conservation.
When the fuel cell is used, the existing fuel cell can only supply hydrogen and excessively discharge to use when the electric quantity of the fuel cell is insufficient, and the service life and the use effect of the fuel cell are easily influenced due to the use mode of the fuel cell which excessively discharges while charging.
Based on this, the present invention provides a hydrogen supply discharge protection system for a fuel cell to solve the above problems.
Disclosure of Invention
The present invention provides a hydrogen supply discharge protection system for a fuel cell, which solves the problem that the conventional fuel cell in the background art can only supply hydrogen and discharge excessively when the electric quantity of the fuel cell is insufficient during the use process, thereby avoiding the problems of shortened service life and poor use effect of the fuel cell caused by the method, greatly prolonging the service life of the fuel cell, avoiding the damage caused by over-discharge of the fuel cell, and not affecting the power supply use of a power consumption module.
In order to achieve the purpose, the invention provides the following technical scheme: a hydrogen supply discharge protection system of a fuel cell comprises a fuel cell module, an electric quantity monitoring module, a conversion connection module and a conversion control module;
the electric quantity monitoring module, the conversion connection module and the conversion control module are respectively connected with each group of fuel cell modules;
the fuel cell module is used for converting chemical energy into electric energy;
the electric quantity monitoring module is used for monitoring the electric quantity residual condition of the fuel cell and sending the electric quantity residual information to the conversion control module and the conversion connection module so as to avoid over discharge;
the conversion connecting module is connected with the energy leading-in module;
the energy introduction module is used for supplementing electrochemical energy to the fuel cell module through the conversion connection module;
the conversion connection module is used for controlling the connection with each group of fuel cell modules needing to supplement electrochemical energy through the electric quantity monitoring module;
the conversion control module is connected with the energy consumption module;
the energy consumption module is used for consuming the electric energy stored in the fuel cell module;
and the conversion control module is used for controlling through the residual electric quantity of the electric quantity monitoring module, connecting the fuel cell which is allowed to discharge with the energy consumption module and disconnecting the fuel cell module with insufficient electric quantity.
Preferably, the number of the fuel cell modules is at least two, and the fuel cells of each group are connected in parallel.
Preferably, the electric quantity monitoring module is connected with a residual electric quantity conversion setting module;
and the residual electric quantity conversion setting module is used for setting an upper limit value when the electric quantity monitoring module monitors the residual electric quantity of the fuel cell module.
Preferably, the upper limit value is a percentage of the remaining power of the fuel cell, and when the remaining power of the fuel cell is consumed to the upper limit value, the power control module sends a signal to the conversion connection module and the conversion control module.
Preferably, the fuel cell modules are further respectively connected with fuel (hydrogen) detection modules, and the fuel (hydrogen) detection modules are connected with the conversion control module;
the fuel (hydrogen) detection module is used for monitoring the supply of hydrogen and ensuring that the fuel cell module has voltage output.
Preferably, the fuel (hydrogen) detection module is connected with the alarm module;
the alarm module is used for feeding back monitoring information of the fuel (hydrogen) detection module, when no hydrogen or oxygen exists, no voltage is output from the fuel cell module, and the alarm module gives an alarm or automatically stops.
The energy introduction module is connected with a hydrogen supply device, and the hydrogen supply device realizes power generation and power supply of the fuel cell module by controlling the supply of hydrogen.
Compared with the prior art, the invention has the beneficial effects that: the invention realizes the power supply use of the energy consumption module by utilizing the parallel replacement type power supply and discharge mode of a plurality of groups of fuel cell modules, and the mode can effectively protect the fuel cell modules and avoid the phenomenon that the fuel cell is damaged in different degrees due to the over discharge of the fuel cell modules while supplying hydrogen.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of the overall system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a hydrogen supply discharge protection system of a fuel cell comprises a fuel cell module, an electric quantity monitoring module, a conversion connection module and a conversion control module;
the electric quantity monitoring module, the conversion connection module and the conversion control module are respectively connected with each group of fuel cell modules;
the fuel cell module is used for converting chemical energy into electric energy;
the electric quantity monitoring module is used for monitoring the electric quantity residual condition of the fuel cell and sending the electric quantity residual information to the conversion control module and the conversion connection module;
the conversion connecting module is connected with the energy leading-in module;
the energy introduction module is used for supplementing electrochemical energy to the fuel cell module through the conversion connection module;
the conversion connection module is used for controlling the connection with each group of fuel cell modules needing to supplement electrochemical energy through the electric quantity monitoring module;
the conversion control module is connected with the energy consumption module;
the energy consumption module is used for consuming the electric energy stored in the fuel cell module;
and the conversion control module is used for controlling through the residual electric quantity of the electric quantity monitoring module, connecting the fuel cell which is allowed to discharge with the energy consumption module and disconnecting the fuel cell module with insufficient electric quantity.
It should be noted that, during the process of supplying hydrogen to the fuel cell by the energy introduction module and discharging the fuel cell module by the energy consumption module, with the continuous consumption of the electric energy in the fuel cell module by the energy consumption module, through the monitoring function of the electric quantity monitoring module, when the residual quantity of the electric quantity in the fuel cell is low, the electric quantity monitoring module transmits a signal to the conversion control module, thereby realizing the connection of the other group of fuel cell modules with sufficient electric quantity with the energy consumption module, transmitting the signal to the conversion connection module by the electric quantity monitoring module, realizing the connection of the energy leading-in module with the fuel cell module to be supplied with hydrogen by the conversion connection module, realizing the hydrogen supply, by adopting the method, the problem that under the condition that the electric quantity of the fuel cell module is insufficient, the hydrogen supply operation is performed, and the over-discharge operation is performed at the same time, which affects the service life of the fuel cell module.
In a further embodiment, the number of the fuel cell modules is at least two, and the fuel cells of each group are connected in parallel;
the alternate power supply and discharge of the plurality of groups of fuel cell modules are utilized, so that the power supply and discharge safety of the fuel cell modules can be effectively improved.
In a further embodiment, the electric quantity monitoring module is connected with a residual electric quantity conversion setting module;
the residual electric quantity conversion setting module is used for setting an upper limit value when the electric quantity monitoring module monitors the residual electric quantity of the fuel cell module;
the upper limit value of the residual capacity can be manually set, so that the power can be supplied and discharged for use according to the power consumption and the power supply requirements of batteries with different fuels.
In a further embodiment, the upper limit is a percentage of the remaining power of the fuel cell, and when the remaining power of the fuel cell is consumed to the upper limit, the power control module sends a signal to the conversion connection module and the conversion control module;
the set percentage upper limit value can facilitate quick setting operation.
In a further embodiment, the fuel cell modules are further respectively connected with fuel (hydrogen) detection modules, and the fuel (hydrogen) detection modules are connected with the conversion control module; the fuel (hydrogen) detection module is used for monitoring the supply of hydrogen and ensuring that the fuel cell module has voltage output;
when the fuel cell module is damaged, the damage signal is transmitted to the conversion control module, and the connection between the fuel cell module and the energy consumption module is disconnected through the conversion control module, so that the hidden danger of damage of the energy consumption module can be reduced.
In a further embodiment, the fuel (hydrogen) detection module is connected with an alarm module; the alarm module is used for feeding back monitoring information of the fuel (hydrogen) detection module, when no hydrogen or oxygen exists, no voltage is output from the fuel cell module, and the alarm module gives an alarm or automatically stops.
The energy introduction module is connected with a hydrogen supply device, and the hydrogen supply device realizes power generation and power supply of the fuel cell module by controlling the supply of hydrogen.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A hydrogen supply discharge protection system for a fuel cell, characterized by: the system comprises a fuel cell module, an electric quantity monitoring module, a conversion connection module and a conversion control module;
the electric quantity monitoring module, the conversion connection module and the conversion control module are respectively connected with each group of fuel cell modules;
the fuel cell module is used for converting chemical energy into electric energy;
the electric quantity monitoring module is used for monitoring the electric quantity residual condition of the fuel cell and sending the electric quantity residual information to the conversion control module and the conversion connection module;
the conversion connecting module is connected with the energy leading-in module;
the energy introduction module is used for supplementing electrochemical energy to the fuel cell module through the conversion connection module;
the conversion connection module is used for controlling the connection with each group of fuel cell modules needing to supplement electrochemical energy through the electric quantity monitoring module;
the conversion control module is connected with the energy consumption module;
the energy consumption module is used for consuming the electric energy stored in the fuel cell module;
and the conversion control module is used for controlling the residual electric quantity through the electric quantity monitoring module, connecting the fuel cell which is allowed to discharge with the energy consumption module, disconnecting the fuel cell module with insufficient electric quantity and avoiding over-discharge.
2. A hydrogen supply discharge protection system for a fuel cell according to claim 1, characterized in that: the number of the fuel cell modules is at least two, and the fuel cells of each group are connected in parallel.
3. A hydrogen supply discharge protection system for a fuel cell according to claim 1, characterized in that: the electric quantity monitoring module is connected with a residual electric quantity conversion setting module;
and the residual electric quantity conversion setting module is used for setting an upper limit value when the electric quantity monitoring module monitors the residual electric quantity of the fuel cell module.
4. A hydrogen supply discharge protection system for a fuel cell according to claim 3, characterized in that: the upper limit value is the percentage of the residual electric quantity of the fuel cell, and when the residual electric quantity of the fuel cell is consumed to the upper limit value, the electric quantity control module sends a signal to the conversion connection module and the conversion control module.
5. A hydrogen supply discharge protection system for a fuel cell according to claim 1, characterized in that: the fuel cell modules are also respectively connected with fuel detection modules, and the fuel detection modules are connected with the conversion control module;
the fuel detection module is used for monitoring the supply of hydrogen and ensuring that the fuel cell module has voltage output.
6. The hydrogen supply discharge protection system of a fuel cell according to claim 5, characterized in that: the fuel detection module is connected with the alarm module;
the alarm module is used for feeding back monitoring information of the fuel detection module, when no hydrogen or oxygen exists, no voltage is output from the fuel cell module, and the alarm module gives an alarm or automatically stops.
7. A hydrogen supply discharge protection system for a fuel cell according to claim 1, characterized in that: the energy introduction module is connected with a hydrogen supply device, and the hydrogen supply device realizes power generation and power supply of the fuel cell module by controlling the supply of hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811456985.3A CN111261906A (en) | 2018-11-30 | 2018-11-30 | Hydrogen supply discharge protection system of fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811456985.3A CN111261906A (en) | 2018-11-30 | 2018-11-30 | Hydrogen supply discharge protection system of fuel cell |
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| CN111261906A true CN111261906A (en) | 2020-06-09 |
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| CN201811456985.3A Pending CN111261906A (en) | 2018-11-30 | 2018-11-30 | Hydrogen supply discharge protection system of fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112803044A (en) * | 2020-12-31 | 2021-05-14 | 上海捷氢科技有限公司 | Hydrogen control method and system for fuel cell |
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| CN112803044B (en) * | 2020-12-31 | 2022-04-08 | 上海捷氢科技股份有限公司 | Hydrogen control method and system for fuel cell |
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