CN112421082A - Method for rapidly recovering performance of vehicle fuel cell system - Google Patents
Method for rapidly recovering performance of vehicle fuel cell system Download PDFInfo
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- CN112421082A CN112421082A CN202011302914.5A CN202011302914A CN112421082A CN 112421082 A CN112421082 A CN 112421082A CN 202011302914 A CN202011302914 A CN 202011302914A CN 112421082 A CN112421082 A CN 112421082A
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- Prior art keywords
- fuel cell
- cell stack
- performance
- cell system
- until
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
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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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
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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
- 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
- H01M8/04126—Humidifying
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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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
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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
- H01M8/04664—Failure or abnormal function
- H01M8/04679—Failure or abnormal function of fuel cell stacks
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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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Abstract
The invention provides a method for rapidly recovering the performance of a vehicle fuel cell system, which comprises the following steps: normally starting the fuel cell system, increasing the load until the output current of the fuel cell stack reaches the rated current value, stopping supplying gas to the cathode inlet of the fuel cell stack until the single-chip voltage of the fuel cell stack reaches the first set voltage value, disconnecting the load, utilizing an external discharge resistor to enable the single-chip voltage of the fuel cell stack to reach the second set voltage value, and recovering gas supply to the cathode inlet of the fuel cell stack until the performance of the fuel cell stack is recovered. The invention can improve the temperature of the galvanic pile and wet the membrane electrode which is dried due to storage, thereby greatly reducing the time for activating the galvanic pile to the best performance.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a method for rapidly recovering the performance of a vehicle fuel cell system.
Background
The proton exchange membrane fuel cell pile is a device for directly converting electrochemical energy into electric energy, has the advantages of high efficiency, cleanness and safety, is widely applied to engine systems of passenger vehicles or commercial vehicles at present, and has wide development prospect.
In order to prevent the residual moisture inside the pem fuel cell stack from freezing due to too low temperature, thereby causing irreversible damage to the bipolar plates and the membrane electrodes, the fuel cell system requires a drying process inside the stack before storage. The membrane material used by the proton exchange membrane fuel cell membrane electrode is a perfluorosulfonic acid membrane, and the conductivity of the dried and dehydrated perfluorosulfonic acid ion resin is greatly reduced, so that the performance of the galvanic pile is greatly reduced.
In order to restore the performance of the fuel cell stack after long-time storage to the initial optimal performance, activation treatment needs to be performed on the fuel cell stack, that is, the performance is restored by normally operating the fuel cell stack, but the process needs a long time and the performance restoration is slow, so that the experience of a motor vehicle using a fuel cell system as an engine is not good, and the SOC of a power battery of the motor vehicle is too high when the performance of the engine of the fuel cell is not restored.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method for rapidly recovering the performance of a fuel cell system for a vehicle.
A method for rapidly recovering performance of a fuel cell system for a vehicle, comprising the steps of:
s1, starting the fuel cell system normally;
s2, carrying up until the output current of the fuel cell stack reaches a rated current value;
s3, stopping supplying gas to the cathode inlet of the fuel cell stack until the single-chip voltage of the fuel cell stack reaches a first set voltage value;
s4, disconnecting the load, and enabling the single-chip voltage of the fuel cell stack to reach a second set voltage value by using an external discharge resistor;
and S5, the gas supply to the cathode inlet of the fuel cell stack is resumed until the performance of the fuel cell stack is recovered.
Further, in step S3, the first setting voltage value is 0.2V;
further, in step S4, the external discharge resistance is 150 Ω.
Further, in step S4, the second setting voltage value is 0V.
The technical scheme provided by the invention has the beneficial effects that: the membrane electrode dried due to storage is wetted while the temperature of the galvanic pile is increased, so that the time for activating the galvanic pile to the optimal performance is greatly reduced, and the method is specifically embodied as follows:
1. by adopting the mode of cutting off the cathode gas, the surface of the proton exchange membrane of the membrane electrode generates a large amount of heat in a short time and gathers a large amount of water, thereby improving the temperature of the galvanic pile, wetting the membrane electrode dried due to storage and recovering the performance of the galvanic pile.
2. Compared with the mode of directly starting the activated galvanic pile, the mode of cutting off the cathode gas greatly reduces the time of activating the galvanic pile to the optimal performance.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a flow chart of a method for rapidly recovering the performance of a fuel cell system for a vehicle according to an embodiment of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Embodiments of the present invention provide a method for rapidly recovering performance of a fuel cell system for a vehicle.
A method for rapidly recovering performance of a fuel cell system for a vehicle, comprising the steps of:
s1, starting the fuel cell system normally;
s2, carrying up until the output current of the fuel cell stack reaches a rated current value; the load increase is to increase the output power of the fuel cell;
s3, stopping supplying gas to the cathode inlet of the fuel cell stack until the single-chip voltage of the fuel cell stack reaches 0.2V;
s4, disconnecting the load, and enabling the single-chip voltage of the fuel cell stack to reach 0V by using an external discharge resistor (150 omega);
and S5, the gas supply to the cathode inlet of the fuel cell stack is resumed until the performance of the fuel cell stack is recovered.
After the fuel cell engine is normally started, the fuel cell engine is quickly loaded to raise the current to the rated current, at the moment, the temperature of the fuel cell stack is too low, the water content of the membrane electrode is too low, the performance of the stack is poor, the gas supply of the cathode needs to be controlled to be cut off, the cathode is short of gas due to the fact that the power is still requested outside the fuel cell, the voltage of the stack can be quickly reduced, when the voltage is reduced to 0.2V of a single chip, the load is disconnected, the voltage is continuously pulled to 0V by using an external discharge resistor, at the moment, the gas supply of the cathode is recovered, and the system is raised to the rated current after being started. In the process, due to the fact that the cathode is in short gas due to gas failure of the cathode, anode gas flees to the cathode, a large amount of heat is generated through direct reaction, the temperature of the galvanic pile is increased, and meanwhile water generated through reaction is gathered on the surface of the membrane to wet the membrane electrode, so that the purpose of improving the performance of the galvanic pile is achieved.
The invention has the beneficial effects that: the membrane electrode dried due to storage is wetted while the temperature of the galvanic pile is increased, so that the time for activating the galvanic pile to the optimal performance is greatly reduced, and the method is specifically embodied as follows:
1. by adopting the mode of cutting off the cathode gas, the surface of the proton exchange membrane of the membrane electrode generates a large amount of heat in a short time and gathers a large amount of water, thereby improving the temperature of the galvanic pile, wetting the membrane electrode dried due to storage and recovering the performance of the galvanic pile.
2. Compared with the mode of directly starting the activated galvanic pile, the mode of cutting off the cathode gas greatly reduces the time of activating the galvanic pile to the optimal performance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A method for rapidly recovering the performance of a vehicle fuel cell system is characterized in that: the method comprises the following steps:
s1, starting the fuel cell system normally;
s2, carrying up until the output current of the fuel cell stack reaches a rated current value;
s3, stopping supplying gas to the cathode inlet of the fuel cell stack until the single-chip voltage of the fuel cell stack reaches a first set voltage value;
s4, disconnecting the load, and enabling the single-chip voltage of the fuel cell stack to reach a second set voltage value by using an external discharge resistor;
and S5, the gas supply to the cathode inlet of the fuel cell stack is resumed until the performance of the fuel cell stack is recovered.
2. A method for rapidly recovering performance of a fuel cell system for vehicles according to claim 1, wherein: in step S3, the first set voltage value is 0.2V.
3. A method for rapidly recovering performance of a fuel cell system for vehicles according to claim 1, wherein: in step S4, the external discharge resistance is 150 Ω.
4. A method for rapidly recovering performance of a fuel cell system for vehicles according to claim 1, wherein: in step S4, the second setting voltage value is 0V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011302914.5A CN112421082A (en) | 2020-11-19 | 2020-11-19 | Method for rapidly recovering performance of vehicle fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011302914.5A CN112421082A (en) | 2020-11-19 | 2020-11-19 | Method for rapidly recovering performance of vehicle fuel cell system |
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| Publication Number | Publication Date |
|---|---|
| CN112421082A true CN112421082A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011302914.5A Pending CN112421082A (en) | 2020-11-19 | 2020-11-19 | Method for rapidly recovering performance of vehicle fuel cell system |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150194A (en) * | 2006-09-22 | 2008-03-26 | 比亚迪股份有限公司 | Fuel cell system |
| CN101167213A (en) * | 2005-04-25 | 2008-04-23 | 通用汽车环球科技运作公司 | Mitigating fuel cell start up/shut down degradation |
| US20120225330A1 (en) * | 2007-02-05 | 2012-09-06 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system |
| US20150104721A1 (en) * | 2013-10-14 | 2015-04-16 | Hyundai Motor Company | Performance recovery method for fuel cell stack |
| KR20150043181A (en) * | 2013-10-14 | 2015-04-22 | 현대자동차주식회사 | Performance recovery method for fuel cell stack |
| CN107171006A (en) * | 2017-06-01 | 2017-09-15 | 南通百应能源有限公司 | Fuel cell exempts from humidification system device |
| CN109768306A (en) * | 2018-12-24 | 2019-05-17 | 武汉理工大学 | A kind of method that fuel cell pile reversible voltage drop is quickly restored online |
| CN109786789A (en) * | 2018-12-27 | 2019-05-21 | 武汉喜玛拉雅光电科技股份有限公司 | A kind of test method of fuel cell membrane electrode activation method and polarization curve |
| CN111682245A (en) * | 2020-05-12 | 2020-09-18 | 广东国鸿氢能科技有限公司 | Method for recovering performance of fuel cell stack |
| CN111916800A (en) * | 2020-07-28 | 2020-11-10 | 上海神力科技有限公司 | Activation method and application of fuel cell membrane electrode |
-
2020
- 2020-11-19 CN CN202011302914.5A patent/CN112421082A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101167213A (en) * | 2005-04-25 | 2008-04-23 | 通用汽车环球科技运作公司 | Mitigating fuel cell start up/shut down degradation |
| CN101150194A (en) * | 2006-09-22 | 2008-03-26 | 比亚迪股份有限公司 | Fuel cell system |
| US20120225330A1 (en) * | 2007-02-05 | 2012-09-06 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system |
| US20150104721A1 (en) * | 2013-10-14 | 2015-04-16 | Hyundai Motor Company | Performance recovery method for fuel cell stack |
| KR20150043181A (en) * | 2013-10-14 | 2015-04-22 | 현대자동차주식회사 | Performance recovery method for fuel cell stack |
| CN104577161A (en) * | 2013-10-14 | 2015-04-29 | 现代自动车株式会社 | Performance recovery method for fuel cell stack |
| CN107171006A (en) * | 2017-06-01 | 2017-09-15 | 南通百应能源有限公司 | Fuel cell exempts from humidification system device |
| CN109768306A (en) * | 2018-12-24 | 2019-05-17 | 武汉理工大学 | A kind of method that fuel cell pile reversible voltage drop is quickly restored online |
| CN109786789A (en) * | 2018-12-27 | 2019-05-21 | 武汉喜玛拉雅光电科技股份有限公司 | A kind of test method of fuel cell membrane electrode activation method and polarization curve |
| CN111682245A (en) * | 2020-05-12 | 2020-09-18 | 广东国鸿氢能科技有限公司 | Method for recovering performance of fuel cell stack |
| CN111916800A (en) * | 2020-07-28 | 2020-11-10 | 上海神力科技有限公司 | Activation method and application of fuel cell membrane electrode |
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Application publication date: 20210226 |