CN111785995A - Purging pipeline system for water guide bipolar plate fuel cell - Google Patents
Purging pipeline system for water guide bipolar plate fuel cell Download PDFInfo
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- CN111785995A CN111785995A CN202010550666.XA CN202010550666A CN111785995A CN 111785995 A CN111785995 A CN 111785995A CN 202010550666 A CN202010550666 A CN 202010550666A CN 111785995 A CN111785995 A CN 111785995A
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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
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
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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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- 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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- 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 utility model provides a water guide bipolar plate fuel cell purging pipeline system, which comprises a water guide bipolar plate fuel cell stack, an air supply unit, a hydrogen supply unit, a circulating water control unit, an electric output control unit and a system controller; the air supply unit, the hydrogen supply unit, the circulating water control unit and the electric output control unit are respectively connected with the water guide bipolar plate fuel cell stack, the system controller is respectively electrically connected with the air supply unit, the hydrogen supply unit, the circulating water control unit and the electric output control unit, the fuel cell system further comprises a purging gas channel, and the purging gas channel is connected with the water guide bipolar plate fuel cell stack and is used for purging water in the water guide bipolar plate fuel cell stack, so that the water in the cell stack can be effectively prevented from being frozen when the fuel cell stack is stored in an environment below zero centigrade.
Description
Technical Field
The disclosure relates to the field of fuel cells, in particular to a purging pipeline connecting system for a water guide bipolar plate fuel cell.
Background
Static drainage is a drainage method for fuel cells. The bipolar plate of the proton exchange membrane fuel cell using the static drainage mode has a micropore structure, namely at least one of the hydrogen plate and the oxygen plate has a micropore structure. Water and gas in the fuel cell can migrate between the circulating water cavity and the reaction gas flow field through the microporous structure, so that the bipolar plate with the microporous structure is also called as a water guide bipolar plate. During the operation of the water guide bipolar plate fuel cell, the micropores of the water guide bipolar plate are filled with water. When the fuel cell stops running, if the ambient temperature is lower than 0 ℃, when the stack body is cooled and the temperature is lower than 0 ℃, the water in the water-conducting bipolar plate freezes and expands in volume, so that the structure of the bipolar plate is mechanically damaged; on the other hand, when starting next time, a large amount of heat is needed to melt ice in the bipolar plate, and the difficulty of low-temperature starting is increased. Therefore, before the cell stops, the water in the pores of the water-conducting bipolar plate needs to be removed. In addition, if the fuel cell is stopped for a long time, if a large amount of liquid water is present in the stack, corrosion of the membrane electrode material and the bipolar plate material is accelerated, which affects the life of the fuel cell. Therefore, it is necessary to remove excess liquid water inside the stack before the fuel cell is shut down.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides a water guide bipolar plate fuel cell purging pipeline system, comprising a water guide bipolar plate fuel cell stack, an air supply unit, a hydrogen supply unit, a circulating water control unit, an electrical output control unit and a system controller; the air supply unit, the hydrogen supply unit, the circulating water control unit and the electric output control unit are respectively connected with the water guide bipolar plate fuel cell stack, the system controller is respectively electrically connected with the air supply unit, the hydrogen supply unit, the circulating water control unit and the electric output control unit, and the fuel cell system further comprises a purging gas channel which is connected with the water guide bipolar plate fuel cell stack and used for purging water in the water guide bipolar plate fuel cell stack.
According to at least one embodiment of the present disclosure, the air supply unit includes an air compressor, a first electromagnetic valve, a first check valve, a humidifier, a first pressure sensor, and a first pressure stabilizer, which are connected in sequence; the purging gas channel comprises a first purging gas channel, the input end of the first purging gas channel is arranged between the air compressor and the first electromagnetic valve, and the output end of the first purging gas channel is arranged between the first voltage stabilizer and the water guide bipolar plate fuel cell stack.
According to at least one embodiment of the present disclosure, a first temperature sensor and a first flow controller are further disposed between the air compressor and the first electromagnetic valve.
According to at least one embodiment of the present disclosure, the hydrogen supply unit includes a hydrogen cylinder, a second pressure sensor, a second electromagnetic valve, a second pressure stabilizer, a second flow controller, a second check valve, and a third pressure stabilizer, which are connected in sequence; the purging gas passage further comprises a second purging gas passage, the input end of the second purging gas passage is located between the air compressor and the first electromagnetic valve, and the output end of the second purging gas passage is located between the second flow controller and the second one-way valve.
According to at least one embodiment of the present disclosure, the circulating water control unit includes a water tank, a control box and a circulating water pipe, the circulating water pipe is connected to the water guide bipolar plate fuel cell stack, the water tank and the control box are disposed on the circulating water pipe, a third electromagnetic valve and a second temperature sensor are further disposed at a water inlet end of the circulating water pipe, a third temperature sensor and a water pump are further disposed at a water outlet end of the circulating water pipe, the purging gas channel further includes a third purging gas channel, an input end of the third purging gas channel is disposed between the air compressor and the first electromagnetic valve, and an output end of the third purging gas channel is disposed between the control box and the third electromagnetic valve.
According to at least one embodiment of the present disclosure, the first purge gas passage is further provided with a fourth solenoid valve, a third check valve, and a fourth pressure stabilizer in this order.
According to at least one embodiment of the present disclosure, the second purge gas passage is further provided with a fifth solenoid valve and a fourth check valve in sequence.
According to at least one embodiment of the present disclosure, the third purge gas passage is further provided with a sixth electromagnetic valve and a fifth one-way valve in sequence.
According to at least one embodiment of the present disclosure, a heating device, a heat dissipation device, a sensor and a valve are arranged in the control box; the heating device, the heat dissipation device and the sensor are connected with the valve and the circulating water pipe.
After adopting above-mentioned technical scheme, this disclosure has following beneficial effect: the purging air channel, the hydrogen channel and the circulating water cavity can be selected according to actual needs, so that purging requirements of different occasions are met; in addition, core components are not required to be added, and the operation is flexible and convenient.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a schematic system diagram of a water-conducting bipolar plate fuel cell of the present disclosure.
Fig. 2 is a schematic view of a water conducting bipolar plate fuel cell purge piping system of the present disclosure.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 and 2, the present disclosure provides a purging pipeline system for a water-guiding bipolar plate fuel cell, which includes a water-guiding bipolar plate fuel cell stack 10, an air supply unit 20, a hydrogen supply unit 30, a circulating water control unit 40, an electrical output control unit 50, and a system controller 60; the air supply unit 20, the hydrogen supply unit 30, the circulating water control unit 40 and the electrical output control unit 50 are respectively connected with the water guide bipolar plate fuel cell stack 10, the system controller 60 is respectively electrically connected with the air supply unit 20, the hydrogen supply unit 30, the circulating water control unit 40 and the electrical output control unit 50, the fuel cell system further comprises a purge gas channel 70, and the purge gas channel 70 is connected with the water guide bipolar plate fuel cell stack 10 and is used for purging water in the water guide bipolar plate fuel cell stack, so that on one hand, the bipolar plate can prevent the water in the bipolar plate from being frozen to cause mechanical damage to the structure after the water guide bipolar plate fuel cell stops operating; on the other hand, the starting difficulty caused by icing can be prevented from increasing when the water guide bipolar plate fuel cell is started at low temperature.
According to at least one embodiment of the present disclosure, the air supply unit 20 includes an air compressor 201, a first solenoid valve 202, a first check valve 203, a humidifier 204, a first pressure sensor 205, and a first pressure stabilizer 206, which are connected in sequence; the purge gas channel 70 includes a first purge gas channel 71, an input end of the first purge gas channel 71 is disposed between the air compressor 201 and the first solenoid valve 202, and an output end of the first purge gas channel 71 is disposed between the first pressure stabilizer 206 and the water-guiding bipolar plate fuel cell stack 10. The air passage may be purged through the first purge gas passage.
According to at least one embodiment of the present disclosure, a first temperature sensor 207 and a first flow controller 208 are further disposed between the air compressor 201 and the first solenoid valve 202.
According to at least one embodiment of the present disclosure, the hydrogen supply unit 30 includes a hydrogen cylinder 300, a second pressure sensor 301, a second electromagnetic valve 302, a second pressure regulator 303, a second flow controller 304, a second check valve 305, and a third pressure regulator 306; the purge gas passage further comprises a second purge gas passage 72, an input end of the second purge gas passage 72 is arranged between the air compressor 201 and the first solenoid valve 202, and an output end of the second purge gas passage 72 is arranged between the second flow controller 304 and the second check valve 305. The hydrogen gas passage may be purged through the second purge gas passage.
According to at least one embodiment of the present disclosure, the circulating water control unit 40 includes a water tank 401, a control box 402 and a circulating water pipe 403, the circulating water pipe 403 is connected to the water-guiding bipolar plate fuel cell stack 10, the water tank 401 and the control box 402 are disposed on the circulating water pipe 403, a third electromagnetic valve 404 and a second temperature sensor 405 are further disposed at a water inlet end of the circulating water pipe 403, a third temperature sensor 406 and a water pump 407 are further disposed at a water outlet end of the circulating water pipe 404, the purge gas channel 70 further includes a third purge gas channel 73, an input end of the third purge gas channel 73 is disposed between the air compressor 201 and the first electromagnetic valve 202, and an output end of the third purge gas channel 73 is disposed between the control box 402 and the third electromagnetic valve 404. Through the third purge gas passage, the circulating water chamber may be purged.
According to at least one embodiment of the present disclosure, the first purge gas passage 71 is further provided with a fourth solenoid valve 711, a third check valve 712, and a fourth regulator 713 in this order.
According to at least one embodiment of the present disclosure, the second purge gas passage 72 is further provided with a fifth solenoid valve 721 and a fourth check valve 722 in sequence.
According to at least one embodiment of the present disclosure, the third purge gas passage 73 is further provided with a sixth solenoid valve 731 and a fifth check valve 732 in sequence.
According to at least one embodiment of the present disclosure, a heating device, a heat dissipation device, a sensor, and a valve are disposed in the control box 402; the heating device, the heat dissipation device, the sensor and the valve are all connected with the circulating water pipe.
When specifically using this disclosed structure, can sweep demand according to the in-service use, select to sweep hydrogen passageway, air passageway, circulating water chamber simultaneously. Alternatively, only the hydrogen passage, only the air passage, or only the circulating water chamber may be purged. The hydrogen channel and the air channel can be simultaneously purged without purging the circulating water cavity; or purging the hydrogen passage and the circulating water chamber at the same time without purging the air passage; or the air passage and the circulating water chamber are purged at the same time without purging the hydrogen passage. And when the sweeping channel and the sweeping cavity are selected, the system controller is used for regulating the closing and opening of the corresponding pipeline.
The present disclosure can adjust the closing and opening states of the first purge gas channel, the second purge gas channel, and the third purge gas channel according to whether the hydrogen electrode plate and the oxygen electrode plate have the micro-porous structure and the actual use requirement, and is not limited to the method provided in this embodiment.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (9)
1. A purging pipeline system for a water guide bipolar plate fuel cell comprises a water guide bipolar plate fuel cell stack, an air supply unit, a hydrogen supply unit, a circulating water control unit, an electric output control unit and a system controller; the system is characterized in that the fuel cell system further comprises a purging gas channel, and the purging gas channel is connected with the water guide bipolar plate fuel cell stack and used for purging water in the water guide bipolar plate fuel cell stack.
2. The purge line system of claim 1, wherein the air supply unit comprises an air compressor, a first solenoid valve, a first check valve, a humidifier, a first pressure sensor and a first pressure stabilizer connected in sequence; the purging gas channel comprises a first purging gas channel, the input end of the first purging gas channel is arranged between the air compressor and the first electromagnetic valve, and the output end of the first purging gas channel is arranged between the first voltage stabilizer and the water guide bipolar plate fuel cell stack.
3. The purge line system of claim 2, wherein a first temperature sensor and a first flow controller are further disposed between the air compressor and the first solenoid valve.
4. The purging pipeline system according to claim 2, wherein the hydrogen supply unit comprises a hydrogen cylinder, a second pressure sensor, a second electromagnetic valve, a second pressure stabilizer, a second flow controller, a second one-way valve and a third pressure stabilizer which are connected in sequence; the purging gas passage further comprises a second purging gas passage, the input end of the second purging gas passage is located between the air compressor and the first electromagnetic valve, and the output end of the second purging gas passage is located between the second flow controller and the second one-way valve.
5. The purging pipeline system according to claim 4, wherein the circulating water control unit comprises a water tank, a control box and a circulating water pipe, the circulating water pipe is connected with the water-conducting bipolar plate fuel cell stack, the water tank and the control box are arranged on the circulating water pipe, a third electromagnetic valve and a second temperature sensor are further arranged at a water inlet end of the circulating water pipe, a third temperature sensor and a water pump are further arranged at a water outlet end of the circulating water pipe, the purging gas channel further comprises a third purging gas channel, an input end of the third purging gas channel is arranged between the air compressor and the first electromagnetic valve, and an output end of the third purging gas channel is arranged between the control box and the third electromagnetic valve.
6. The purge piping system of claim 2, wherein the first purge gas passage is further provided with a fourth solenoid valve, a third check valve, and a fourth pressure stabilizer, in that order.
7. The purge line system of claim 4, wherein the second purge gas passage is further provided with a fifth solenoid valve and a fourth check valve in sequence.
8. The purge line system of claim 5, wherein the third purge gas passage is further provided with a sixth solenoid valve and a fifth check valve in sequence.
9. The purge line system of claim 5, wherein the control box is provided with a heating device, a heat sink, a sensor and a valve; the heating device, the heat dissipation device, the sensor and the valve are all connected with the circulating water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010550666.XA CN111785995B (en) | 2020-06-16 | 2020-06-16 | Purging pipeline system of water-guiding bipolar plate fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010550666.XA CN111785995B (en) | 2020-06-16 | 2020-06-16 | Purging pipeline system of water-guiding bipolar plate fuel cell |
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| CN111785995A true CN111785995A (en) | 2020-10-16 |
| CN111785995B CN111785995B (en) | 2023-05-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751056A (en) * | 2020-12-31 | 2021-05-04 | 安徽江淮汽车集团股份有限公司 | Fuel cell purging system and control method |
| CN113839069A (en) * | 2021-08-26 | 2021-12-24 | 上海电气集团股份有限公司 | Purging method and device for fuel cell, electronic device, and storage medium |
| CN116682992A (en) * | 2023-07-31 | 2023-09-01 | 山东美燃氢动力有限公司 | Fuel cell system and shutdown purging method of fuel cell stack |
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| CN116682992B (en) * | 2023-07-31 | 2023-12-08 | 山东美燃氢动力有限公司 | Fuel cell system and shutdown purging method of fuel cell stack |
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