CN104064787A - Hydrogen pressure control system and method for fuel battery backup power supply system - Google Patents
Hydrogen pressure control system and method for fuel battery backup power supply system Download PDFInfo
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- CN104064787A CN104064787A CN201410271025.5A CN201410271025A CN104064787A CN 104064787 A CN104064787 A CN 104064787A CN 201410271025 A CN201410271025 A CN 201410271025A CN 104064787 A CN104064787 A CN 104064787A
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- Prior art keywords
- hydrogen
- valve
- pipeline
- intake valve
- pressure
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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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- 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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- 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 relates to a hydrogen pressure control system and a method for a fuel battery backup power supply system. The hydrogen pressure control system comprises a main hydrogen valve, a hydrogen feeding valve and a hydrogen exhaust valve, wherein the main hydrogen valve, the hydrogen feeding valve and the hydrogen exhaust valve are connected in sequence through pipelines; a hydrogen feeding pressure sensor is also arranged on the pipeline between the main hydrogen valve and the hydrogen feeding valve; an electric pile is also connected to the pipeline between the hydrogen feeding valve and the hydrogen exhaust valve; the hydrogen feeding pressure sensor is also connected with a single-chip microcomputer for cyclically detecting a hydrogen feeding pressure output signal; the main hydrogen valve, the hydrogen feeding valve and the hydrogen exhaust valve are connected with the single-chip microcomputer and are controlled to be switched on and switched off through the single-chip microcomputer. When the output signal of the hydrogen feeding pressure sensor is lower than a set value, the hydrogen pressure control system effectively eliminates interference caused by a negative pressure phenomenon of a hydrogen pipeline, and can accurately judge whether the hydrogen feeding pressure sensor has a zero-point drifting problem and effectively avoid the phenomenon that the system reports a failure of the hydrogen feeding pressure sensor by mistake, so that the diagnosis accuracy of the system is improved, and the reliability of the system during standby is guaranteed.
Description
Technical field
The present invention relates to a kind of control system, more particularly, is a kind of relevant backup power system of fuel cell atmospheric pressure control system and method thereof.
Background technology
In existing backup power system of fuel cell, it is indispensable that Hydrogen Vapor Pressure is controlled, in existing backup power system of fuel cell, general control system Hydrogen Vapor Pressure when operation can guarantee in normal range (NR), when system standby due to the diffusion of hydrogen molecule, can cause generation negative pressure appearance in Hydrogen Line, pressure sensor output signal can be lower than zero signal, system can think that (assumed zero point signal is 0.5V to the drift of hydrogen entrance pressure power sensor zero point by mistake, set when output signal is during lower than 0.4V, be judged to be sensor zero point drift), produce wrong fault message.
Summary of the invention
For the deficiency existing in prior art, the invention provides a kind of Hydrogen Vapor Pressure control system and method thereof for backup power system of fuel cell, effectively avoid the report hydrogen of system mistake to enter pressure sensor failure, improve the accuracy of system diagnostics, the reliability while guaranteeing system standby.
To achieve these goals, the present invention realizes by the following technical solutions:
A kind of backup power system of fuel cell Hydrogen Vapor Pressure control system, it comprises hydrogen main valve, hydrogen intake valve and hydrogen vent valve, it is characterized in that, described hydrogen main valve, hydrogen intake valve and hydrogen vent valve are connected by pipeline successively, the hydrogen being also provided with for measuring channel Hydrogen Vapor Pressure on the pipeline between described hydrogen total valve and hydrogen air intake valve enters pressure sensor, on the pipeline between described hydrogen intake valve and hydrogen vent valve, is also connected with pile;
Described hydrogen enters on pressure sensor to be also connected with the single-chip microcomputer that enters output pressure signal for cycle detection hydrogen, and described hydrogen main valve, hydrogen intake valve and hydrogen vent valve are all connected with single-chip microcomputer, by its break-make of Single-chip Controlling.
Further, what described hydrogen main valve, hydrogen intake valve and hydrogen vent valve all adopted is electromagnetically operated valve, is convenient to the control of single-chip microcomputer.
A kind of control method of utilizing above-mentioned Hydrogen Vapor Pressure control system, it is characterized in that, its method is: first, by the output signal of single-chip microcomputer cycle detection hydrogen entrance pressure power, when hydrogen entrance pressure power sensor output signal being detected when presetting numerical value, open hydrogen intake valve and hydrogen vent valve certain hour, air can be flow backwards in hydrogen pipeline, guarantee that the negative pressure appearance in Hydrogen Line disappears, and can get rid of the interference of hydrogen pipeline negative pressure appearance to failure diagnosis; Then, close after hydrogen intake valve and hydrogen vent valve certain hour, continue the output signal that cycle detection hydrogen enters pressure sensor; Now, if single-chip microcomputer detects lower than hydrogen entrance pressure power sensor output signal when presetting numerical value, send report sensor zero point drifting fault information; Otherwise, normal.
As preferably, described in preset numerical value and be 0-0.4V, easy to use.
As preferably, the time of opening hydrogen intake valve and hydrogen vent valve is 1-2 second, and the time of closing hydrogen intake valve and hydrogen vent valve is 2-4s second.
Because the drift of hydrogen pipeline negative pressure and hydrogen entrance pressure power sensor zero point all can cause hydrogen entrance pressure power sensor output signal lower than zero point, the present invention passes through technique scheme, will be at hydrogen entrance pressure power sensor output signal when setting numerical value, effectively exclude the interference that hydrogen pipeline negative pressure appearance causes, judge that accurately hydrogen enters pressure sensor and whether has Zero drift in main amplifier, it can effectively avoid the report hydrogen of system mistake to enter pressure sensor failure, improve the accuracy of system diagnostics, the reliability while guaranteeing system standby.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, describe the present invention in detail;
Fig. 1 is system construction drawing of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
As shown in Figure 1, a kind of backup power system of fuel cell Hydrogen Vapor Pressure control system of the present embodiment, it comprises hydrogen main valve 1, hydrogen intake valve 3 and hydrogen vent valve 5, hydrogen main valve 1, hydrogen intake valve 3 and hydrogen vent valve 5 are connected by pipeline successively, the hydrogen being also provided with for measuring channel Hydrogen Vapor Pressure on the pipeline between 3 of 1 of hydrogen main valve and hydrogen intake valves enters pressure sensor 2, on the pipeline between described hydrogen intake valve 3 and hydrogen vent valve 5, is also connected with pile 4; Described hydrogen enters on pressure sensor 2 to be also connected with the single-chip microcomputer that enters output pressure signal for cycle detection hydrogen, and described hydrogen main valve 1, hydrogen intake valve 3 and hydrogen vent valve 5 are all connected with single-chip microcomputer, by its break-make of Single-chip Controlling.
In the present embodiment, what hydrogen main valve 1, hydrogen intake valve 3 and hydrogen vent valve 5 all adopted is electromagnetically operated valve, is convenient to the control of single-chip microcomputer.
The present embodiment adopts the method for said system as follows:
When system standby, system is by the single-chip microcomputer output signal of cycle detection hydrogen entrance pressure power always, when detecting this signal lower than 0.4V, hydrogen is entered to valve and hydrogen valve to be opened and continues 1 second, air can be flow backwards in hydrogen pipeline, negative pressure appearance in hydrogen pipeline is disappeared, can get rid of the interference of hydrogen pipeline negative pressure appearance to failure diagnosis, within 3 seconds, continue afterwards the output signal that cycle detection hydrogen enters pressure sensor 2, if this signal is still lower than 0.4V, it is to occur null offset fault that explanation hydrogen enters pressure sensor, and system now should be reported sensor zero point drifting fault
Because the drift of hydrogen pipeline negative pressure and hydrogen entrance pressure power sensor zero point all can cause hydrogen entrance pressure power sensor output signal lower than zero point, the present invention controls will be at hydrogen entrance pressure power sensor output signal during lower than zero point, effectively exclude the interference that hydrogen pipeline negative pressure appearance causes, judge that accurately hydrogen enters pressure sensor and whether has Zero drift in main amplifier.
Owing to adopting above technical scheme, the report hydrogen of system mistake of can effectively avoiding of the present invention enters pressure sensor failure, improves the accuracy of system diagnostics, the reliability while guaranteeing system standby.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. a backup power system of fuel cell Hydrogen Vapor Pressure control system, it comprises hydrogen main valve, hydrogen intake valve and hydrogen vent valve, it is characterized in that, described hydrogen main valve, hydrogen intake valve and hydrogen vent valve are connected by pipeline successively, the hydrogen being also provided with for measuring channel Hydrogen Vapor Pressure on the pipeline between described hydrogen total valve and hydrogen air intake valve enters pressure sensor, on the pipeline between described hydrogen intake valve and hydrogen vent valve, is also connected with pile;
Described hydrogen enters on pressure sensor to be also connected with the single-chip microcomputer that enters output pressure signal for cycle detection hydrogen, and described hydrogen main valve, hydrogen intake valve and hydrogen vent valve are all connected with single-chip microcomputer.
2. Hydrogen Vapor Pressure control system according to claim 1, is characterized in that, what described hydrogen main valve, hydrogen intake valve and hydrogen vent valve all adopted is electromagnetically operated valve.
3. according to the control method of utilizing Hydrogen Vapor Pressure control system described in claim 1 or 2, it is characterized in that, its method is: first, by the output signal of single-chip microcomputer cycle detection hydrogen entrance pressure power, when hydrogen entrance pressure power sensor output signal being detected when presetting numerical value, open hydrogen intake valve and hydrogen vent valve certain hour, air can be flow backwards in hydrogen pipeline, guarantee that the negative pressure appearance in Hydrogen Line disappears, and can get rid of the interference of hydrogen pipeline negative pressure appearance to failure diagnosis; Then, close after hydrogen intake valve and hydrogen vent valve certain hour, continue the output signal that cycle detection hydrogen enters pressure sensor; Now, if single-chip microcomputer detects lower than hydrogen entrance pressure power sensor output signal when presetting numerical value, send report sensor zero point drifting fault information; Otherwise, normal.
4. control method according to claim 3, is characterized in that, described in to preset numerical value be 0-0.4V.
5. control method according to claim 3, is characterized in that, the time of opening hydrogen intake valve and hydrogen vent valve is 1-2 second, and the time of closing hydrogen intake valve and hydrogen vent valve is 2-4s second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410271025.5A CN104064787B (en) | 2014-06-17 | 2014-06-17 | A kind of backup power system of fuel cell Hydrogen Vapor Pressure control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271025.5A CN104064787B (en) | 2014-06-17 | 2014-06-17 | A kind of backup power system of fuel cell Hydrogen Vapor Pressure control method |
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| CN104064787A true CN104064787A (en) | 2014-09-24 |
| CN104064787B CN104064787B (en) | 2016-06-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630967A (en) * | 2017-03-15 | 2018-10-09 | 丰田自动车株式会社 | Fuel cell system and its control method |
| CN111799490A (en) * | 2020-06-12 | 2020-10-20 | 上海发电设备成套设计研究院有限责任公司 | Dehydrogenation system of closed container |
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| US20040053089A1 (en) * | 2002-09-16 | 2004-03-18 | Balliet Ryan J. | System for determining a gas composition within a shut down fuel cell power plant and method of operation |
| JP2006252968A (en) * | 2005-03-11 | 2006-09-21 | Riken Keiki Co Ltd | Power supply device using fuel cell |
| CN101252198A (en) * | 2008-04-17 | 2008-08-27 | 上海交通大学 | Proton exchanging film fuel battery test platform |
| CN102401720A (en) * | 2010-09-14 | 2012-04-04 | 通用汽车环球科技运作有限责任公司 | Calibration of pressure sensor in hydrogen storage system |
| CN103022534A (en) * | 2012-12-15 | 2013-04-03 | 华中科技大学 | Controller for solid oxide fuel cell (SOFC) system |
| CN103682396A (en) * | 2012-09-06 | 2014-03-26 | 上海汽车集团股份有限公司 | Method for managing hydrogen when hydrogen supply system of fuel cell vehicle stops working |
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2014
- 2014-06-17 CN CN201410271025.5A patent/CN104064787B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040053089A1 (en) * | 2002-09-16 | 2004-03-18 | Balliet Ryan J. | System for determining a gas composition within a shut down fuel cell power plant and method of operation |
| JP2006252968A (en) * | 2005-03-11 | 2006-09-21 | Riken Keiki Co Ltd | Power supply device using fuel cell |
| CN101252198A (en) * | 2008-04-17 | 2008-08-27 | 上海交通大学 | Proton exchanging film fuel battery test platform |
| CN102401720A (en) * | 2010-09-14 | 2012-04-04 | 通用汽车环球科技运作有限责任公司 | Calibration of pressure sensor in hydrogen storage system |
| CN103682396A (en) * | 2012-09-06 | 2014-03-26 | 上海汽车集团股份有限公司 | Method for managing hydrogen when hydrogen supply system of fuel cell vehicle stops working |
| CN103022534A (en) * | 2012-12-15 | 2013-04-03 | 华中科技大学 | Controller for solid oxide fuel cell (SOFC) system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630967A (en) * | 2017-03-15 | 2018-10-09 | 丰田自动车株式会社 | Fuel cell system and its control method |
| CN111799490A (en) * | 2020-06-12 | 2020-10-20 | 上海发电设备成套设计研究院有限责任公司 | Dehydrogenation system of closed container |
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| Publication number | Publication date |
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| CN104064787B (en) | 2016-06-15 |
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Address after: Yushan Zhen Shan song road Kunshan city Suzhou city Jiangsu province 215316 No. 66 Applicant after: FORESIGHT LIMITED Address before: Yushan Zhen Shan song road Kunshan city Suzhou city Jiangsu province 215316 No. 66 Applicant before: Kunshan Fuersai Energy Co., Ltd. |
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