CN101162781A - Hydrogen gas system for enhancing fuel battery service life - Google Patents
Hydrogen gas system for enhancing fuel battery service life Download PDFInfo
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- CN101162781A CN101162781A CNA2007101573763A CN200710157376A CN101162781A CN 101162781 A CN101162781 A CN 101162781A CN A2007101573763 A CNA2007101573763 A CN A2007101573763A CN 200710157376 A CN200710157376 A CN 200710157376A CN 101162781 A CN101162781 A CN 101162781A
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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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Abstract
A hydrogen system for improving the operational life of a fuel cell comprises a fuel cell stack (1), a hydrogen supply part (2) and a hydrogen reflux part (3), and is characterized by also comprising a hydrogen purging part (4) which consists of a high-pressure purging gas cylinder (41) with purging gas, a purging gas control electromagnetic valve (44) connected with the purging gas cylinder, a reducing valve (43) communicated with the purging gas control electromagnetic valve (44) and a one way valve (42) connected with the purging gas cylinder (41). The residual hydrogen on the hydrogen chamber and the hydrogen channel of the fuel cell stack is removed through purging by the hydrogen purging part; the hydrogen chamber of the fuel cell membrane electrode can be effectively prevented from generating higher instant electric potential by electrochemical reactions to burn the membrane electrode when the system starts up or shuts down, thereby greatly improving the life-span of proton exchange membrane fuel cell. The invention is also characterized by simple structure, high efficiency and long life-span.
Description
Technical field
The present invention relates to Proton Exchange Membrane Fuel Cells, relate in particular to the hydrogen system of Proton Exchange Membrane Fuel Cells.
Background technology
Proton Exchange Membrane Fuel Cells can be used as the power set of car, ship.The working method and the internal combustion engine of engine that with the Proton Exchange Membrane Fuel Cells is power set is similar, must continuously send into battery to hydrogen fuel and oxidant, and discharges reaction product water and certain used heat continuously to keep the balance of battery material and heat.Institute thinks and keeps the continuous operation of Proton Exchange Membrane Fuel Cells engine system, generally includes air system, hydrogen system and cooling segment.Air system provide to fuel cell have certain pressure, the air capacity of humidity temperature, guarantee the supply of oxidant; Hydrogen system provide have relevant pressure, the amounts of hydrogen of humidity and temperature, satisfy the demand of reducing agent; Cooling segment guarantees the working temperature that fuel cell needs.
The hydrogen back-up system of the Proton Exchange Membrane Fuel Cells engine that uses includes only hydrogen supply part and backflow part at present.Hydrogen supply partly generally includes decompressor, stable-pressure device, the humidifying device that is connected successively with the High Pressure Hydrogen gas cylinder.The part that refluxes has comprised tail row's control valve and the reflux pump that is connected with division box usually.
Existing Proton Exchange Membrane Fuel Cells engine hydrogen system has following deficiency:
1, when the Proton Exchange Membrane Fuel Cells engine long time shuts down; because there are inevitable micro-leakage in cell with hydrogen chamber and hydrogen pipeline; air is entered in the cell with hydrogen chamber; go up at battery membranes electrode (MEA) under the effect of catalyst; residual hydrogen and airborne oxygen generation electrochemical reaction in the hydrogen chamber; moment produces higher electromotive force, burns membrane electrode (MEA) easily, reduces the useful life of Proton Exchange Membrane Fuel Cells.
When 2, the start of Proton Exchange Membrane Fuel Cells engine feeds hydrogen, go up at battery membranes electrode (MEA) under the effect of catalyst, oxygen generation electrochemical reaction in the air that hydrogen at first advances with the hydrogen endoluminal leak also will produce higher electromotive force moment, burns membrane electrode (MEA) easily.
3, the Proton Exchange Membrane Fuel Cells engine of new assembling, owing to have a large amount of air naturally in pipeline, hydrogen circuit component and the cell with hydrogen chamber, electrochemical reaction in the hydrogen chamber occurs easilier during start, moment produces higher electromotive force, reduces the useful life of Proton Exchange Membrane Fuel Cells.
Summary of the invention
Purpose of the present invention is exactly for the deficiency that above-mentioned prior art exists, a kind of fuel battery engines hydrogen system in useful life that improves that provides are provided.
Technical scheme of the present invention is: a kind of hydrogen system that improves fuel battery service life, comprise fuel cell pack, hydrogen is supplied with part, hydrogen backflow part, it is characterized in that also having comprised in the described hydrogen system hydrogen purge part, the hydrogen purge part purges gas cylinder by the high pressure that purge gas is housed, the purge gas control electromagnetically operated valve that is connected with the purging gas cylinder, the pressure-reducing valve that is communicated with purge gas control electromagnetically operated valve, and the unidirectional valve that is connected on the purging gas cylinder is formed, the pressure-reducing valve of hydrogen purge part is communicated with the hydrogen humidifying device of hydrogen system, and the unidirectional valve that purges on the gas cylinder is the valve that purges gas cylinder inflation usefulness to high pressure.
A kind of hydrogen system that improves fuel battery service life of the present invention is characterized in that the gas in the described purging gas cylinder is inert gas.
A kind of hydrogen system that improves fuel battery service life of the present invention is characterized in that the inert gas in the described purging gas cylinder is nitrogen or argon gas.
A kind of hydrogen system that improves fuel battery service life of the present invention, comprise fuel cell pack, hydrogen is supplied with part, hydrogen backflow part, the working procedure of hydrogen system comprises that the hydrogen process that hydrogen is supplied with in the High Pressure Hydrogen gas cylinder of part subtracts, enter fuel cell pack behind voltage stabilizing and the humidification, behind the fuel cell pack internal reaction, the hydrogen of every participation reaction carries the part water of impurity and reaction generation, enter the water knockout drum of hydrogen backflow part, hydrogen is sent hydrogen supply humidifying device partly to through reflux pump and is entered fuel cell pack participation reaction again with fresh hydrogen behind the branch water; Impurity, water and small part hydrogen enter atmosphere through tail row electromagnetically operated valve disconnectedly.It is characterized in that in the described hydrogen system working procedure, also comprise the working procedure of following hydrogen purge part:
1) starting hydrogen supply High Pressure Hydrogen gas cylinder partly before fuel cell pack is carried hydrogen, starts the hydrogen purge part earlier, open the tail row electromagnetically operated valve that purge gas is controlled electromagnetically operated valve and hydrogen backflow part;
2) behind the purge gas process pressure-reducing valve and stable-pressure device in the purging gas cylinder, enter hydrogen and supply with the hydrogen humidifying device of part, after the hydrogen humidifying device purged, enter fuel cell pack, fuel cell pack is purged by the hydrogen inlet of fuel cell pack;
3) after purge gas purged fuel cell pack, flow out, enter atmosphere through hydrogen water knockout drum and tail row electromagnetically operated valve by hydrogen outlet;
4) after purging was finished, shut-down purge gas control electromagnetically operated valve started hydrogen and supplies with part, opens the control electromagnetically operated valve, opens the hydrogen reflux pump, and the interior hydrogen of High Pressure Hydrogen gas cylinder enters the working procedure of carrying hydrogen to battery pile;
When 5) hydrogen system is shut down; elder generation's closing control electromagnetically operated valve; open purge gas control electromagnetically operated valve then; tail row electromagnetically operated valve is held open state; once more hydrogen system is purged; after having purged, shut-down purge gas control electromagnetically operated valve, tail row's electromagnetically operated valve and hydrogen reflux pump, system enters the dead halt state.
A kind of hydrogen system that improves fuel battery service life of the present invention, it is identical with the Hydrogen Vapor Pressure that enters pile to it is characterized in that purge gas enters the pressure of pile.During insufficient pressure, inflated purging gas cylinder by being connected the unidirectional valve that purges on the gas cylinder by high-pressure air source, gas replenishment process carries out under stopped status.
The invention has the beneficial effects as follows:
1, through hydrogen purge purging partly; hydrogen chamber and the interior residual hydrogen of hydrogen passage in the fuel cell pack are eliminated; when start or shutdown; can effectively prevent in the fuel cell hydrogen chamber; the generation of hydrogen-oxygen generation electrochemical reaction under the effect of the last catalyst of battery membranes electrode (MEA); cause moment to produce higher electromotive force and burn membrane electrode (MEA), thus the useful life of having improved Proton Exchange Membrane Fuel Cells greatly.
2, the present invention only exchanges on the basis of hydrogen system of meter fuel cell the source nephew, has increased the hydrogen purge part, purges the simple in structure of part, the efficient height, and the life-span is long, can increase substantially the useful life of Proton Exchange Membrane Fuel Cells engine.
3, hydrogen system of the present invention, the course of work is easy to operate, grasps easily.
4, applicability of the present invention is wide, can be widely used in the hydrogen system of Proton Exchange Membrane Fuel Cells.
Description of drawings
Drawings attached 2 width of cloth of the present invention, wherein:
Fig. 1 is hydrogen system figure of the present invention.
Fig. 2 is the hydrogen system figure of common engine.
In the accompanying drawing, 1, fuel cell pack 11, hydrogen outlet 12, hydrogen inlet 2, hydrogen supply with part 21, High Pressure Hydrogen gas cylinder 22, control electromagnetically operated valve 23, decompressor 24, stable-pressure device 25, hydrogen humidifying device 26, unidirectional valve 3, hydrogen backflow part 31, hydrogen water knockout drum 32, hydrogen reflux pump 33, tail row electromagnetically operated valve 4, hydrogen purge part 41, purge gas cylinder 42, unidirectional valve 43, pressure-reducing valve 44, purge gas control electromagnetically operated valve.
Embodiment
The invention will be further described below in conjunction with the embodiment of accompanying drawing 1.
Hydrogen system comprises fuel cell pack 1, hydrogen supply part 2, hydrogen backflow part 3 and hydrogen purge part 4.Fuel cell pack 1 is provided with hydrogen inlet 12 and hydrogen outlet 11.Hydrogen is supplied with part 2 and is comprised control electromagnetically operated valve 22, decompressor 23, stable-pressure device 24, the hydrogen humidifying device 25 that connects with High Pressure Hydrogen gas cylinder 21 successively and be connected unidirectional valve 26 on the High Pressure Hydrogen gas cylinder.The outlet of humidifying device is connected with the hydrogen inlet 12 of fuel cell pack 1.Hydrogen backflow part 3 comprises the hydrogen water knockout drum 31 that is connected with the hydrogen outlet of fuel cell pack, the hydrogen reflux pump 32 that is connected with the hydrogen water knockout drum and tail row electromagnetically operated valve 33.Hydrogen purge part 4 by with the high pressure purge gas is housed--purge gas control electromagnetically operated valve 44, pressure-reducing valve 43 that the purging gas cylinder 41 of-nitrogen is connected successively and be connected the unidirectional valve 42 that purges on the gas cylinder 41 and form, the pressure-reducing valve 43 of hydrogen purge part is connected with hydrogen supply stable-pressure device partly.
During hydrogen system work, at first open purge gas control electromagnetically operated valve 44 and tail row electromagnetically operated valve 33, the gas that purges in the gas cylinder 41 is controlled electromagnetically operated valve 44, pressure-reducing valve 43, stable-pressure device 24 and hydrogen humidifying device 25 through purge gas successively, after entering fuel cell pack 1 by the hydrogen inlet 11 of fuel cell pack 1, flow out by hydrogen outlet 12, enter atmosphere through hydrogen water knockout drum 31 and tail row electromagnetically operated valve 33.Behind the purging, shut-down purge gas control electromagnetically operated valve 44, open hydrogen control electromagnetically operated valve 22, open hydrogen reflux pump 32, hydrogen in the High Pressure Hydrogen gas cylinder 21 is successively through control electromagnetically operated valve 22, decompressor 23, stable-pressure device 24, enter hydrogen humidifying device 25, carry steam behind the humidification, enter fuel cell pack 1, react with the anodic oxidation agent by hydrogen inlet 12, fuel cell pack 1 begins generating, hydrogen partial, the part water that impurity and reaction generate flows into hydrogen water knockout drum 31 by hydrogen outlet 11, carry out branch water, under the work of hydrogen reflux pump 32, after most of tail row hydrogen has been sent hydrogen humidifying device 25 to, enter fuel cell pack 1 with fresh hydrogen and participate in reaction; Since the opening and closing constantly of tail row's electromagnetically operated valve 33, the impurity in the hydrogen water knockout drum 31, and water and small part hydrogen are entered atmosphere discontinuously.
When hydrogen system is shut down; close hydrogen control electromagnetically operated valve 22; open purge gas control electromagnetically operated valve 44; and assurance tail row electromagnetically operated valve 33 is opened; once more hydrogen system is purged; after having purged, shut-down purge gas control electromagnetically operated valve 44, tail row's electromagnetically operated valve 33 and hydrogen reflux pump 32, system enters stopped status fully.
When gas pressure is not enough in purging gas cylinder 41, purges gas cylinder 41 by high pressure purge gas source of the gas by 42 pairs on unidirectional valve and inflate; After charging gas, the cutoff high source of the gas, unidirectional valve 42 is closed automatically, guarantees to purge gas cylinder 41 interior gases and does not leak outside.Gas replenishment process carries out under stopped status.
Claims (5)
1. hydrogen system that improves fuel battery service life, comprise fuel cell pack (1), hydrogen is supplied with part (2), hydrogen backflow part (3), it is characterized in that also having comprised in the described hydrogen system hydrogen purge part (4), hydrogen purge part (4) purges gas cylinder (41) by the high pressure that purge gas is housed, the purge gas control electromagnetically operated valve (44) that is connected with the purging gas cylinder, the pressure-reducing valve (43) that is communicated with purge gas control electromagnetically operated valve (44), and being connected unidirectional valve (42) composition that purges on the gas cylinder (41), the pressure-reducing valve (43) of hydrogen purge part (4) is communicated with the hydrogen humidifying device of hydrogen system.
2. according to the described a kind of hydrogen system that improves fuel battery service life of claim 1, it is characterized in that the gas in the described purging gas cylinder (41) is inert gas etc.
3. a kind of hydrogen system that improves fuel battery service life according to claim 2 is characterized in that the inert gas in the described purging gas cylinder (41) is nitrogen or argon gas.
4. hydrogen system that improves fuel battery service life, comprise fuel cell pack (1), hydrogen is supplied with part (2), hydrogen backflow part (3), the hydrogen system working procedure comprises that the hydrogen process that hydrogen is supplied with in the High Pressure Hydrogen gas cylinder (21) of part subtracts, enter fuel cell pack (1) behind voltage stabilizing and the humidification, behind fuel cell pack (1) internal reaction, the hydrogen of the reaction do not participated in to carry impurity and react the part water that generates, enter the water knockout drum (31) of hydrogen backflow part, hydrogen is sent hydrogen supply humidifying device (25) partly to through reflux pump (32) and is entered fuel cell pack (1) participation reaction again with fresh hydrogen behind the branch water; Impurity, water and small part hydrogen are arranged electromagnetically operated valve (33) through tail and are entered atmosphere discontinuously.It is characterized in that in the described hydrogen system working procedure, also comprise the working procedure of following hydrogen purge part (4):
1) starting hydrogen supply High Pressure Hydrogen gas cylinder (21) partly before fuel cell pack is carried hydrogen, starts the hydrogen purge part earlier, open the tail row electromagnetically operated valve (33) that purge gas is controlled electromagnetically operated valve (44) and hydrogen backflow part;
2) behind the purge gas process pressure-reducing valve (43) and stable-pressure device (24) in the purging gas cylinder (41), enter hydrogen and supply with the hydrogen humidifying device (25) of part, after hydrogen humidifying device (25) purged, hydrogen inlet (12) by fuel cell pack (1) enters fuel cell pack (1), and fuel cell pack (1) is purged;
3) after purge gas purged fuel cell pack, flow out, enter atmosphere through hydrogen water knockout drum (31) and tail row's electromagnetically operated valve (33) by hydrogen outlet (11);
4) after purging was finished, shut-down purge gas control electromagnetically operated valve (44) started hydrogen and supplies with part, opens control electromagnetically operated valve (22), unlatching hydrogen reflux pump (32), and the hydrogen in the High Pressure Hydrogen gas cylinder (21) enters the working procedure of carrying hydrogen to battery pile;
When 5) hydrogen system is shut down; elder generation's closing control electromagnetically operated valve (22); open purge gas control electromagnetically operated valve (44) then; tail row's electromagnetically operated valve (33) is held open state; once more hydrogen system is purged; after having purged, shut-down purge gas control electromagnetically operated valve (44), tail row's electromagnetically operated valve (33) and hydrogen reflux pump (32), system enters the dead halt state.
5. according to claim 1 and 4 described a kind of hydrogen systems that improve fuel battery service life, it is identical with the Hydrogen Vapor Pressure that enters pile (1) to it is characterized in that purge gas enters the pressure of pile (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101573763A CN100483819C (en) | 2007-10-09 | 2007-10-09 | Hydrogen gas system for enhancing fuel battery service life |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101573763A CN100483819C (en) | 2007-10-09 | 2007-10-09 | Hydrogen gas system for enhancing fuel battery service life |
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| CN101162781A true CN101162781A (en) | 2008-04-16 |
| CN100483819C CN100483819C (en) | 2009-04-29 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938467A (en) * | 2012-11-17 | 2013-02-20 | 新源动力股份有限公司 | Fuel cell positive pole system |
| CN103236554A (en) * | 2013-02-04 | 2013-08-07 | 昆山弗尔赛能源有限公司 | Hydrogen-supply busbar nitrogen purging system for emergency power supply of fuel cell |
| CN103647092A (en) * | 2013-10-30 | 2014-03-19 | 张勇 | Method and device for prolonging fuel cell service life |
| CN108252760A (en) * | 2018-02-02 | 2018-07-06 | 北京国鸿氢能科技有限公司 | Generator, the fuel cell Hydrogen Energy recovery system including the generator and automobile |
| CN109216728A (en) * | 2017-07-03 | 2019-01-15 | 现代自动车株式会社 | Hydrogen Supply Method for fuel cell system |
| CN109950579A (en) * | 2019-03-19 | 2019-06-28 | 上海汉翱新能源科技有限公司 | A kind of fuel battery engines intelligent control platform and its control method |
| CN110635153A (en) * | 2018-06-22 | 2019-12-31 | 上海氢尚新能源科技有限公司 | Tail gas emission control method of fuel cell hydrogen recovery system |
| CN110783604A (en) * | 2019-09-25 | 2020-02-11 | 潍柴动力股份有限公司 | Control method for hydrogen discharge valve of fuel cell |
| CN111082108A (en) * | 2019-12-30 | 2020-04-28 | 上海神力科技有限公司 | Device and method for testing start-stop accelerated life of fuel cell |
| CN111106369A (en) * | 2019-12-13 | 2020-05-05 | 潍柴动力股份有限公司 | Impurity removing method, impurity removing device and impurity removing system for fuel cell |
| CN112849097A (en) * | 2021-04-23 | 2021-05-28 | 河南氢枫能源技术有限公司 | Hydrogenation system and blowing method |
| CN113793953A (en) * | 2021-07-23 | 2021-12-14 | 武汉格罗夫氢能汽车有限公司 | Fuel cell system and rapid shutdown method thereof |
-
2007
- 2007-10-09 CN CNB2007101573763A patent/CN100483819C/en active Active
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938467A (en) * | 2012-11-17 | 2013-02-20 | 新源动力股份有限公司 | Fuel cell positive pole system |
| CN103236554A (en) * | 2013-02-04 | 2013-08-07 | 昆山弗尔赛能源有限公司 | Hydrogen-supply busbar nitrogen purging system for emergency power supply of fuel cell |
| CN103647092A (en) * | 2013-10-30 | 2014-03-19 | 张勇 | Method and device for prolonging fuel cell service life |
| CN103647092B (en) * | 2013-10-30 | 2016-02-03 | 张勇 | Extend the method and apparatus of fuel battery service life |
| CN109216728A (en) * | 2017-07-03 | 2019-01-15 | 现代自动车株式会社 | Hydrogen Supply Method for fuel cell system |
| CN108252760A (en) * | 2018-02-02 | 2018-07-06 | 北京国鸿氢能科技有限公司 | Generator, the fuel cell Hydrogen Energy recovery system including the generator and automobile |
| CN110635153B (en) * | 2018-06-22 | 2022-07-05 | 上海氢尚新能源科技有限公司 | Tail gas emission control method of fuel cell hydrogen recovery system |
| CN110635153A (en) * | 2018-06-22 | 2019-12-31 | 上海氢尚新能源科技有限公司 | Tail gas emission control method of fuel cell hydrogen recovery system |
| CN109950579A (en) * | 2019-03-19 | 2019-06-28 | 上海汉翱新能源科技有限公司 | A kind of fuel battery engines intelligent control platform and its control method |
| CN110783604A (en) * | 2019-09-25 | 2020-02-11 | 潍柴动力股份有限公司 | Control method for hydrogen discharge valve of fuel cell |
| CN111106369A (en) * | 2019-12-13 | 2020-05-05 | 潍柴动力股份有限公司 | Impurity removing method, impurity removing device and impurity removing system for fuel cell |
| CN111082108A (en) * | 2019-12-30 | 2020-04-28 | 上海神力科技有限公司 | Device and method for testing start-stop accelerated life of fuel cell |
| CN112849097A (en) * | 2021-04-23 | 2021-05-28 | 河南氢枫能源技术有限公司 | Hydrogenation system and blowing method |
| CN112849097B (en) * | 2021-04-23 | 2021-07-27 | 河南氢枫能源技术有限公司 | Hydrogenation system and blowing method |
| CN113793953A (en) * | 2021-07-23 | 2021-12-14 | 武汉格罗夫氢能汽车有限公司 | Fuel cell system and rapid shutdown method thereof |
| CN113793953B (en) * | 2021-07-23 | 2024-02-06 | 武汉格罗夫氢能汽车有限公司 | Fuel cell system and quick shutdown method thereof |
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| CN100483819C (en) | 2009-04-29 |
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