WO2020138776A1 - Système de pile à combustible - Google Patents

Système de pile à combustible Download PDF

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Publication number
WO2020138776A1
WO2020138776A1 PCT/KR2019/017510 KR2019017510W WO2020138776A1 WO 2020138776 A1 WO2020138776 A1 WO 2020138776A1 KR 2019017510 W KR2019017510 W KR 2019017510W WO 2020138776 A1 WO2020138776 A1 WO 2020138776A1
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WIPO (PCT)
Prior art keywords
fuel cell
unit
switching member
fluid
discharged
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Application number
PCT/KR2019/017510
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English (en)
Korean (ko)
Inventor
신현길
이정규
Original Assignee
범한퓨얼셀 주식회사
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Priority to DE112019006449.5T priority Critical patent/DE112019006449T5/de
Publication of WO2020138776A1 publication Critical patent/WO2020138776A1/fr

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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
    • H01M8/04164—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 by condensers, gas-liquid separators or filters
    • 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
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • H01M8/04761—Pressure; Flow of fuel cell exhausts
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of 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
    • 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

Definitions

  • the present invention relates to a fuel cell system.
  • a fuel cell is a power generation device that converts chemical energy of hydrogen and oxygen in air into electrical energy.
  • These fuel cells depending on the type of electrolyte used, Alkaline Fuel Cell (AFC), Phosphoric Acid Fuel Cell (PAFC), Molten Carbonate Fuel Cell (MCFC) , Polymer Electrolyte Membrane Fuel Cell (PEMFC).
  • AFC Alkaline Fuel Cell
  • PAFC Phosphoric Acid Fuel Cell
  • MCFC Molten Carbonate Fuel Cell
  • PEMFC Polymer Electrolyte Membrane Fuel Cell
  • the polymer electrolyte fuel cell is also called a hydrogen ion exchange membrane fuel cell because it uses hydrogen directly as a fuel, and can operate at a relatively low temperature compared to other fuel cells, and has an output density. It has the advantage of being small and light, since it is large and noiseless.
  • the fuel cell when a fuel cell is used in a submarine, as described above, the fuel cell has an advantage of operating at a low temperature, so it is unlikely that the submarine will be captured by a heat detection camera. In addition, since the fuel cell has the advantage of being silent, it is unlikely that the submarine will be caught by the sonar. For this reason, research on submarine fuel cells has been actively conducted.
  • the embodiments of the present invention have been devised to solve the above-described conventional problems, and to simplify the structure of the fuel cell system than the prior art and to provide a fuel cell system capable of minimizing the amount of discharged fluid.
  • the switching unit a first switching member which is connected to the hydrogen supply unit on one side; A second switching member having one side connected to the oxygen supply unit; A third switching member having one side connected to the first switching member; And a fourth switching member connected to one side of the second switching member, a fuel cell system may be provided.
  • a first gas-liquid separator is connected to the anode electrode of the first fuel cell unit to separate the discharged fluid discharged from the first fuel cell unit;
  • a second gas-liquid separator which is connected to the cathode electrode of the first fuel cell unit to separate the discharged fluid discharged from the first fuel cell unit;
  • a third gas-liquid separator connected to the anode electrode of the second fuel cell unit to separate the discharged fluid discharged from the second fuel cell unit;
  • a fourth gas-liquid separator that is connected to the cathode electrode of the second fuel cell unit to separate the discharged fluid discharged from the second fuel cell unit, into a gas-liquid separator.
  • the first switching member forms a flow path so that the fluid supplied from the hydrogen supply unit flows to the first fuel cell unit, and the fluid passing through the third switching member is the A flow path is formed to flow to the second fuel cell portion, and the second switching member forms a flow path to allow fluid to flow from the oxygen supply portion to the first fuel cell portion, and the fluid passing through the fourth switching member is the second A flow path is formed to flow to the fuel cell unit, and the third switching member forms a flow path so that the fluid discharged from the first gas-liquid separator flows to the first switching member, and the fluid discharged from the third gas-liquid separator is external.
  • a flow path is formed so as to be discharged to, and the fourth switching member forms a flow path so that the fluid discharged from the second gas-liquid separator flows to the second switching member, and the fluid discharged from the fourth gas-liquid separator is discharged to the outside.
  • a fuel cell system can be provided that forms a flow path as much as possible.
  • the first switching member forms a flow path so that the fluid supplied from the hydrogen supply unit flows to the second fuel cell unit, and the fluid passing through the third switching member is the A flow path is formed to flow to the first fuel cell portion, and the second switching member forms a flow path to allow fluid to flow from the oxygen supply portion to the second fuel cell portion, and the fluid passing through the fourth switching member is the first A flow path is formed to flow to the fuel cell unit, and the third switching member forms a flow path so that the fluid discharged from the third gas-liquid separator flows to the first switching member, and the fluid discharged from the first gas-liquid separator is external.
  • a flow path is formed so as to be discharged, and the fourth switching member forms a flow path so that the fluid discharged from the fourth gas-liquid separator flows to the second switching member, and the fluid discharged from the second gas-liquid separator is discharged to the outside.
  • a fuel cell system can be provided that forms a flow path as much as possible.
  • a fuel cell system may be provided in which the first switching member, the second switching member, the third switching member, and the fourth switching member are provided as four-way valves.
  • the switching unit a first switching member which is connected to the hydrogen supply unit on one side; And a second switching member having one side connected to the oxygen supply unit, and when the switching unit is in the first state, the first switching member is configured to flow the fluid supplied from the hydrogen supply unit to the first fuel cell unit.
  • a flow path is formed so that the fluid discharged from the first gas-liquid separator flows to the second fuel cell portion, and the second switching member flows so that the fluid supplied from the oxygen supply portion flows to the first fuel cell portion.
  • forming a flow path so that the fluid discharged from the second gas-liquid separator flows to the second fuel cell unit, and when the switching unit 500 is in the second state, the first switching member is the hydrogen supply unit.
  • a flow path is formed so that the fluid supplied from the second fuel cell portion flows, and a flow path is formed so that the fluid discharged from the third gas-liquid separator flows to the first fuel cell portion, and the second switching member is the oxygen supply portion.
  • a fuel cell system may be provided in which a flow path is formed so that fluid supplied from the second fuel cell portion flows, and a flow path is formed so that the fluid discharged from the fourth gas-liquid separator flows to the first fuel cell portion.
  • a first check is provided on a path through which the discharged fluid discharged from the first fuel cell part flows to the first switching member, and prevents fluid from flowing back from the first switching member to the first fuel cell part.
  • valve A second check valve that is provided on a path through which the discharged fluid discharged from the first fuel cell part flows to the second switching member, and prevents fluid from flowing backward from the second switching member to the first fuel cell part;
  • a third check valve that is provided on a path through which the discharged fluid discharged from the second fuel cell part flows to the first switching member, and prevents a reverse flow of fluid from the first switching member to the second fuel cell part;
  • a fourth check valve that is provided on a path through which the discharged fluid discharged from the second fuel cell section flows to the second switching member, and prevents fluid from flowing backward from the second switching member to the second fuel cell section.
  • a fuel cell system may be provided, which further comprises a.
  • the rear end of the first check valve and the rear end of the third check valve are joined to be connected to the first switching member, and the rear end of the second check valve and the rear end of the fourth check valve are joined to the second A fuel cell system, which is connected to the switching member, can be provided.
  • the structure is simplified to facilitate control and operation, and is suitable for being applied for submarines. There is an effect that it is possible to minimize the amount of discharge fluid discharged from the fuel cell.
  • FIG. 1 is a circuit diagram showing a connection relationship between parts of a fuel cell system according to an embodiment of the present invention.
  • FIG. 2 is a circuit diagram showing a state in which the switching unit is switched in FIG. 1.
  • FIG. 3 is a circuit diagram showing a connection relationship between parts of a fuel cell system according to another embodiment of the present invention.
  • FIG. 4 is a circuit diagram showing a state in which the switching unit is switched in FIG. 3.
  • a supply line capable of supplying the substance to the other component is provided to supply the substance through the supply line.
  • fluid' may be used throughout the liquid and gas, and means a fluid, a gas, or a mixture of a fluid and a gas.
  • the fuel cell system 1 includes a hydrogen supply unit 100, an oxygen supply unit 200, a first fuel cell unit 300, and a second fuel cell unit It may include a 400, the switching unit 500 and the discharge unit 600.
  • the fuel cell system 1 according to an embodiment of the present invention is provided as a submarine having a closed condition and is used to supply power to the submarine will be described as an example. It is not limited by this, the idea of the present invention.
  • the hydrogen supply unit 100 is provided to supply hydrogen to the first fuel cell unit 300 or the second fuel cell unit 400 according to the state of the switching unit 500.
  • the hydrogen of the hydrogen supply unit 100 may be supplied in a modified state through a separate reformer (not shown), for example.
  • the reformer may be a Pd filter purifier or a reformer including a PrOx reactor, and the hydrogen supply unit 100 may be provided to store hydrogen, for example, as a metal hydride.
  • the spirit of the present invention is not limited thereto, and the hydrogen supplied from the hydrogen supply unit 100 is not reformed through a reformer, and hydrogen stored in the tank may be directly supplied, or may be supplied through a device other than the reformer. .
  • the oxygen supply unit 200 may supply oxygen to the first fuel cell unit 300 or the second fuel cell unit 400 according to the state of the switching unit 500.
  • the oxygen supply unit 200 may include, for example, a tank for storing liquid oxygen.
  • the spirit of the present invention is not limited thereto, and the oxygen stored in the oxygen supply unit 200 may be stored as oxygen in the form of a high pressure gas or may be stored by other known methods.
  • the oxygen stored in the oxygen supply unit 200 may be supplied to the first fuel cell unit 300 or the second fuel cell unit 400.
  • the first fuel cell unit 300 may generate electric energy using hydrogen supplied from the hydrogen supply unit 100 and oxygen supplied from the oxygen supply unit 200. Further, the discharge fluid discharged from the second fuel cell unit 400 may be supplied according to the state of the switching unit 500 to generate electrical energy using the discharge fluid.
  • the first fuel cell unit 300 may include a fuel cell stack.
  • the fuel cell stack provided in the first fuel cell unit 300 may be a stack of polymer electrolyte fuel cells (PEMFC).
  • the fuel cell stack provided in the first fuel cell unit 300 includes a plurality of fuel cell cells comprising an anode electrode, a cathode electrode facing the anode electrode, and an electrolyte membrane interposed between the anode electrode and the cathode electrode.
  • hydrogen supplied from the hydrogen supply unit 100 may be supplied to the anode electrode
  • oxygen supplied from the oxygen supply unit 200 may be supplied to the cathode electrode.
  • an oxidation reaction as in the following formula (1) occurs at the anode electrode
  • a reduction reaction as in the following formula (2) occurs at the cathode electrode. Accordingly, the total reaction of the first fuel cell unit 300 is as shown in Equation (3) below.
  • the first gas-liquid separator 310 and the second gas-liquid separator 320 may be connected to a rear end of the first fuel cell unit 300 to separate the gas discharged from the first fuel cell unit 300.
  • the first gas-liquid separator 310 may be connected to the anode electrode, receives the mixed fluid of the condensate and gas discharged after power generation from the anode electrode, separates the condensate and discharges it to the outside, such as hydrogen, water vapor, etc.
  • the gas serves to pass.
  • the second gas-liquid separator 320 may be connected to the cathode electrode, receives the mixed fluid of the condensate and gas discharged after power generation from the cathode electrode, separates the condensate and discharges it to the outside, such as oxygen, water vapor, etc.
  • the gas serves to pass. Accordingly, performance of the second fuel cell unit 400 may be prevented from deteriorating due to excessively generated condensate among the discharge fluid generated in the first fuel cell unit 300.
  • the second fuel cell unit 400 may generate electric energy using hydrogen supplied from the hydrogen supply unit 100 and oxygen supplied from the oxygen supply unit 200.
  • the discharge fluid discharged from the first fuel cell unit 300 may be supplied according to the state of the switching unit 500 to generate electrical energy using the discharge fluid.
  • the second fuel cell unit 400 may include a fuel cell stack as in the first fuel cell unit 300.
  • the fuel cell stack provided in the second fuel cell unit 400 may be a stack of polymer electrolyte fuel cells (PEMFC).
  • the fuel cell stack provided to the second fuel cell unit 400 includes a plurality of fuel cell cells made of an anode electrode, a cathode electrode facing the anode electrode, and an electrolyte membrane interposed between the anode electrode and the cathode electrode.
  • the third gas-liquid separator 410 and the fourth gas-liquid separator 420 may be connected to a rear end of the second fuel cell unit 400 to separate the gas discharged from the second fuel cell unit 400.
  • the third gas-liquid separator 410 may be connected to the anode electrode, and receives a mixed fluid of condensate and gas discharged after power generation from the anode electrode to discharge a portion of the water to the outside.
  • the fourth gas-liquid separator 420 may be connected to the cathode electrode, receives the mixed fluid of the condensate and gas discharged after power generation from the cathode electrode, separates the condensate and discharges it to the outside, such as oxygen, water vapor, etc.
  • the gas serves to pass. Accordingly, performance of the first fuel cell unit 300 may be prevented from deteriorating due to excessively generated condensate among the discharge fluid generated in the second fuel cell unit 400.
  • the switching unit 500 may switch the flow paths of hydrogen and oxygen supplied from the hydrogen supply unit 100 and the oxygen supply unit 200 to the first fuel cell unit 300 and the second fuel cell unit 400. According to the switching operation of the switching unit 500, the fuel cell system 1 may be operated in two states, a state shown in FIG. 1 and a state shown in FIG. 2. These can be referred to as "first state” and "second state” respectively.
  • the flow paths of hydrogen and oxygen supplied from the hydrogen supply unit 100 and the oxygen supply unit 200 to the first fuel cell unit 300 and the second fuel cell unit 400 are switched by the switching unit 500. Accordingly, hydrogen of the hydrogen supply unit 100 and oxygen of the oxygen supply unit 200 may be supplied to the first fuel cell unit 300 or the second fuel cell unit 400.
  • the switching unit 500 may include a first switching member 510, a second switching member 520, a third switching member 530 and a fourth switching member 540.
  • the first to fourth switching members 510, 520, 530, and 540 may be provided as, for example, four-way valves having four ports.
  • four ports included in each of the first to fourth switching members 510, 520, 530, and 540 are matched one-to-one with two pairs, so that two flow paths may be formed inside each switching member.
  • the first to fourth switching members 510, 520, 530, and 540 are switchable in two states, so that the path through which the fluid flows can be selectively changed.
  • the first switching member 510 forms a flow path so that the fluid supplied from the hydrogen supply unit 100 flows to the first fuel cell unit 300, and at the same time, the third switching A flow path is formed so that the fluid passing through the member 530 flows to the second fuel cell unit 400.
  • the second switching member 520 forms a flow path so that the fluid flows from the oxygen supply unit 200 to the first fuel cell unit 300, and at the same time, the fluid passing through the fourth switching member 540 is the second fuel.
  • a flow path is formed to flow to the battery unit 400.
  • the third switching member 530 forms a flow path so that the fluid discharged from the first gas-liquid separator 310 flows to the first switching member 510, and at the same time, the fluid discharged from the third gas-liquid separator 410 A flow path is formed to be discharged to the discharge unit 600.
  • the fourth switching member 540 forms a flow path so that the fluid discharged from the second gas-liquid separator 320 flows to the second switching member 520, and at the same time, the fluid discharged from the fourth gas-liquid separator 420 A flow path is formed to be discharged to the discharge unit 600.
  • the first switching member 510 forms a flow path so that the fluid supplied from the hydrogen supply unit 100 flows to the second fuel cell unit 400, and at the same time 3 to form a flow path so that the fluid that has passed through the switching member 530 flows to the first fuel cell unit 300.
  • the second switching member 520 forms a flow path so that the fluid flows from the oxygen supply unit 200 to the second fuel cell unit 400, and at the same time, the fluid passing through the fourth switching member 540 is the first fuel.
  • a flow path is formed to flow to the battery unit 300.
  • the third switching member 530 forms a flow path so that the fluid discharged from the third gas-liquid separator 410 flows to the first switching member 510, and at the same time, the fluid discharged from the first gas-liquid separator 310 A flow path is formed to be discharged to the discharge unit 600.
  • the fourth switching member 540 forms a flow path so that the fluid discharged from the fourth gas-liquid separator 420 flows to the second switching member 520, and at the same time, the fluid discharged from the second gas-liquid separator 320 A flow path is formed to be discharged to the discharge unit 600.
  • the first fuel cell unit 300 and the second fuel Inert gas such as carbon dioxide (CO 2 ), nitrogen (N 2 ), etc. may be continuously accumulated in the battery unit 400.
  • CO 2 carbon dioxide
  • N 2 nitrogen
  • the inert gas is accumulated in the first fuel cell unit 300 and the second fuel cell unit 400 in this way, the performance of the first fuel cell unit 300 and the second fuel cell unit 400 is deteriorated.
  • inert gas generated from the first fuel cell unit 300 and the second fuel cell unit 400 condensate (H 2 O) and residual hydrogen and oxygen, which are reaction products, are discharged to the discharge unit 600. Can.
  • the discharge unit 600 is connected to the third switching member 530 and the fourth switching member 540, and according to the state of the third switching member 530 and the fourth switching member 540, the first fuel cell unit ( 300) and the fluid and impurities discharged from the first gas-liquid separator 310 or the second gas-liquid separator 320 is discharged to the outside, or the second fuel cell unit 400 and the third gas-liquid separator 410 or the fourth
  • the fluid discharged from the gas-liquid separator 420 is discharged to the outside.
  • the discharge unit 600 may be provided as a buffer tank as an example, and may be provided to discharge to the outside while temporarily storing the discharged fluid, but this is only an example, and thus, the spirit of the present invention is not limited.
  • the discharged fluid discharged through the first fuel cell unit 300 passes through the third switching member 530 and the fourth switching member 540 through the first gas-liquid separator 310 and the second gas-liquid separator 320. Then, after passing through the first switching member 510 and the second switching member 520, it is supplied to the second fuel cell unit 400. At this time, the condensed water may be removed while passing through the first gas-liquid separator 310 and the second gas-liquid separator 320.
  • the unreacted gas contained in the discharge fluid discharged from the first fuel cell unit 300 is supplied to the second fuel cell unit 400 so that the second fuel cell unit 400 can be utilized to generate electrical energy. have.
  • the amount of fluid finally discharged from the fuel cell system 1 can be minimized by recycling the discharged fluid that can be discharged from the first fuel cell unit 300 again.
  • the discharge fluid discharged after the electrical energy is generated in the second fuel cell unit 400 passes through the third gas-liquid separator 410 and the fourth gas-liquid separator 420, and the third switching member 530 and the fourth switching member ( It passes through 540) is discharged to the discharge unit 600. At this time, the condensed water may be removed while passing through the third gas-liquid separator 410 and the fourth gas-liquid separator 420.
  • the discharge fluid discharged through the second fuel cell unit 400 passes through the third switching member 530 and the fourth switching member 540 through the third gas-liquid separator 410 and the fourth gas-liquid separator 420. Then, after passing through the first switching member 510 and the second switching member 520, it is supplied to the first fuel cell unit 300. At this time, the condensed water may be removed while passing through the third gas-liquid separator 410 and the fourth gas-liquid separator 420.
  • unreacted gas contained in the discharged fluid discharged from the second fuel cell unit 400 is supplied to the first fuel cell unit 300 so that the first fuel cell unit 300 can be utilized to generate electrical energy. have.
  • the amount of fluid finally discharged from the fuel cell system 1 can be minimized by recycling the discharged fluid that can be discharged from the second fuel cell unit 400 again.
  • the discharge fluid discharged after the electrical energy is generated in the first fuel cell unit 300 passes through the first gas-liquid separator 310 and the second gas-liquid separator 320, and the third switching member 530 and the fourth switching member ( It passes through 540) is discharged to the discharge unit 600. At this time, condensed water may be removed while passing through the first gas-liquid separator 310.
  • the fuel cell system 1 according to an embodiment of the present invention as described above is supplied from the hydrogen supply unit 100 and the oxygen supply unit 200 to the first fuel cell unit 300 and the second fuel cell unit 400. Since the flow paths of hydrogen and oxygen to be changed can be changed by a total of four switching members 510, 520, 530, 540, the humidifier can be omitted while reducing the number of valves, and thus the fuel cell system 1 compared to the prior art The structure of can be simplified.
  • the fuel cell system 1' accordinging to another embodiment of the present invention includes a hydrogen supply unit 100, an oxygen supply unit 200, a first fuel cell unit 300, and a second fuel cell It may include a branch 400, a switching unit 500 and the first to fourth check valves 710, 720, 730, 740.
  • the hydrogen and oxygen supplied by the hydrogen supply unit 100 and the oxygen supply unit 200 may be high purity hydrogen and oxygen, and the fuel cell system 1'is It can be configured with an optimized system.
  • parts having a difference from the configuration of the fuel cell system 1 described above will be mainly described, and the same parts other than those described above will be used.
  • the hydrogen supply unit 100 may supply hydrogen to the first fuel cell unit 300 and the second fuel cell unit 400 according to the state of the switching unit 500. At this time, the hydrogen supplied by the hydrogen supply unit 100 may be high purity hydrogen having a higher purity than the hydrogen used in the fuel cell system 1 according to the above-described embodiment.
  • the oxygen supply unit 200 may supply oxygen to the first fuel cell unit 300 and the second fuel cell unit 400 according to the state of the switching unit 500. At this time, the oxygen supplied by the oxygen supply unit 200 may be high purity oxygen having a higher purity than the oxygen used in the fuel cell system 1 according to the above-described embodiment.
  • the discharge portion for discharging inert gas, residual hydrogen and oxygen may be omitted, and only condensate as a reaction product can be discharged from the system.
  • the switching unit 500 may switch the flow paths of hydrogen and oxygen supplied from the hydrogen supply unit 100 and the oxygen supply unit 200 to the first fuel cell unit 300 and the second fuel cell unit 400. According to the switching operation of the switching unit 500, the fuel cell system 1 may be operated in two states, a state shown in FIG. 3 and a state shown in FIG. 4. These can be referred to as "first state” and "second state” respectively.
  • the switching unit 500 is provided on a path through which oxygen and hydrogen are supplied from the hydrogen supply unit 100 and the oxygen supply unit 200 to the first fuel cell unit 300 or the second fuel cell unit 400.
  • the first switching member 510 and the second switching member 520 may be included.
  • the third and fourth switching members 530 and 540 may be omitted.
  • the first switching member 510 forms a flow path so that the fluid supplied from the hydrogen supply unit 100 flows to the first fuel cell unit 300, and at the same time, the first gas liquid.
  • a flow path is formed so that the fluid discharged from the separator 310 flows to the second fuel cell unit 400.
  • the second switching member 520 forms a flow path so that the fluid supplied from the oxygen supply unit 200 flows to the first fuel cell unit 300, and at the same time, the fluid discharged from the second gas-liquid separator 320 is removed. 2
  • a flow path is formed to flow to the fuel cell unit 400.
  • the first switching member 510 forms a flow path so that the fluid supplied from the hydrogen supply unit 100 flows to the second fuel cell unit 400, and at the same time 3 A flow path is formed so that the fluid discharged from the gas-liquid separator 410 flows to the first fuel cell unit 300.
  • the second switching member 520 forms a flow path so that the fluid supplied from the oxygen supply unit 200 flows to the second fuel cell unit 400, and at the same time, the fluid discharged from the fourth gas-liquid separator 420 is removed. 1 A flow path is formed to flow to the fuel cell unit 300.
  • a first check valve 710 may be provided on a path through which the discharge fluid discharged from the first fuel cell unit 300 flows to the first switching member 510, and discharged from the first fuel cell unit 300
  • a second check valve 720 may be provided on a path through which the discharge fluid flows to the second switching member 520. Accordingly, the backflow of fluid from the first switching member 510 to the first fuel cell unit 300 is prevented by the first check valve 710, and the second switching member by the second check valve 720. Backflow of fluid from 520 to the first fuel cell unit 300 is prevented.
  • a third check valve 730 may be provided on a path through which the discharged fluid discharged from the second fuel cell unit 400 flows to the first switching member 510, and the second fuel cell unit 400 may
  • a fourth check valve 740 may be provided on a path through which the discharged discharged fluid flows to the second switching member 520. Accordingly, backflow of fluid from the first switching member 510 to the second fuel cell unit 400 is prevented by the third check valve 730, and the second switching member is prevented by the fourth check valve 740. Backflow of fluid from 520 to the second fuel cell unit 400 is prevented.
  • the rear end of the first check valve 710 and the rear end of the third check valve 730 may join and be connected to the first switching member 510, and the rear end of the second check valve 720 and the fourth check valve The rear end of 740 may join and be connected to the second switching member 520. Accordingly, when the discharge fluid is discharged and flows from any one of the first fuel cell unit 300 and the second fuel cell unit 400, it is possible to prevent such discharge fluid from flowing back to the other.
  • the hydrogen supply unit 100 and the oxygen supply unit 200 High purity hydrogen and oxygen supplied from are first supplied to the first fuel cell unit 300. Accordingly, the first fuel cell unit 300 generates electric energy using the supplied hydrogen and oxygen, and discharges the discharge fluid.
  • the discharge fluid discharged from the first fuel cell unit 300 passes through the first gas-liquid separator 310 and the second gas-liquid separator 320, and then the first check valve 710 and the second check valve 720 ) Passing through the first switching member 510 and the second switching member 520 to be supplied to the second fuel cell unit 400, which is utilized to generate electrical energy in the second fuel cell unit 400.
  • the discharge fluid that generates and discharges electricity from the first fuel cell unit 300 is input to the second fuel cell unit 400 and used to generate electricity, wherein the hydrogen supply unit 100 and the oxygen supply unit 200 Since hydrogen and oxygen supplied from the first fuel cell unit 300 are high purity hydrogen and oxygen, almost no inert gas, residual hydrogen, and oxygen remain, and only condensate, which is a reaction product, remains.
  • the condensate may be discharged and processed separately, and when a small amount of residual hydrogen, oxygen, and inert gas remaining in the second fuel cell unit 400 changes the flow path by switching the flow path of the switching unit 500, again It may be circulated to the first fuel cell unit 300.
  • the high purity hydrogen and oxygen supplied from the hydrogen supply unit 100 and the oxygen supply unit 200 are second fuel cell units 400.
  • the second fuel cell unit 400 generates electric energy using the supplied hydrogen and oxygen, and discharges the discharge fluid.
  • the discharge fluid discharged from the second fuel cell unit 400 passes through the third gas-liquid separator 410 and the fourth gas-liquid separator 420, and then the third check valve 730 and the fourth check valve 740 ) Passing through the first switching member 510 and the second switching member 520 to be supplied to the first fuel cell unit 300, thereby being utilized to generate electrical energy in the first fuel cell unit 300.
  • the discharge fluid that generates and discharges electricity from the second fuel cell unit 400 is input to the first fuel cell unit 300 and used for electricity generation.
  • the hydrogen supply unit 100 and the oxygen supply unit 200 Since hydrogen and oxygen supplied to the second fuel cell unit 400 are high-purity hydrogen and oxygen, almost no inert gas, residual hydrogen, and oxygen remain, and only condensate, which is a reaction product, remains.
  • the condensate may be discharged and processed separately, and the traces of residual hydrogen, oxygen, and inert gas remaining in the first fuel cell unit 300 may change again when the flow path is changed by switching the flow path of the switching unit 500. It may be circulated to the second fuel cell unit 400.
  • the fuel cell system 1 ′ according to another embodiment of the present invention having the configuration as described above includes the first fuel cell unit 300 and the second fuel cell unit from the hydrogen supply unit 100 and the oxygen supply unit 200. Since the flow paths of hydrogen and oxygen supplied to 400) can be controlled by the two first and second switching members 510 and 520, the structure of the fuel cell system 1'can be further simplified compared to the prior art. have.

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  • Manufacturing & Machinery (AREA)
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  • Sustainable Energy (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

Un système de pile à combustible selon un mode de réalisation de la présente invention comprend : une unité d'alimentation en hydrogène ; une unité d'alimentation en oxygène ; une première unité de pile à combustible et une seconde unité de pile à combustible qui reçoivent de l'hydrogène et de l'oxygène en provenance de l'unité d'alimentation en hydrogène et de l'unité d'alimentation en oxygène de façon à générer de l'électricité ; et une unité de commutation qui est connectée à l'unité d'alimentation en hydrogène, à l'unité d'alimentation en oxygène, à la première unité de pile à combustible et à la seconde unité de pile à combustible, et qui définit des passages de l'hydrogène et de l'oxygène fournis par l'unité d'alimentation en hydrogène et l'unité d'alimentation en oxygène à la première unité de pile à combustible ou à la seconde unité de pile à combustible.
PCT/KR2019/017510 2018-12-28 2019-12-11 Système de pile à combustible WO2020138776A1 (fr)

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DE112019006449.5T DE112019006449T5 (de) 2018-12-28 2019-12-11 Brennstoffzellensystem

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KR1020180172961A KR20200082392A (ko) 2018-12-28 2018-12-28 연료전지 시스템
KR10-2018-0172961 2018-12-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010140700A (ja) * 2008-12-10 2010-06-24 Mitsubishi Heavy Ind Ltd 固体高分子形燃料電池発電システム
KR20120116738A (ko) * 2011-04-13 2012-10-23 지에스칼텍스 주식회사 크로스오버 가스를 재활용하는 다단스택형 고분자전해질 연료전지 시스템
JP2013161599A (ja) * 2012-02-03 2013-08-19 Mitsubishi Heavy Ind Ltd 固体高分子形燃料電池発電システム
KR20140046190A (ko) * 2012-10-10 2014-04-18 대우조선해양 주식회사 잠수함의 연료전지 시스템 및 그 연료전지 시스템의 가스 제거방법
JP2017117542A (ja) * 2015-12-21 2017-06-29 トヨタ自動車株式会社 燃料電池車両のガス供給システム

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101629271B1 (ko) 2014-12-03 2016-06-10 국방과학연구소 순환 연료전지

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010140700A (ja) * 2008-12-10 2010-06-24 Mitsubishi Heavy Ind Ltd 固体高分子形燃料電池発電システム
KR20120116738A (ko) * 2011-04-13 2012-10-23 지에스칼텍스 주식회사 크로스오버 가스를 재활용하는 다단스택형 고분자전해질 연료전지 시스템
JP2013161599A (ja) * 2012-02-03 2013-08-19 Mitsubishi Heavy Ind Ltd 固体高分子形燃料電池発電システム
KR20140046190A (ko) * 2012-10-10 2014-04-18 대우조선해양 주식회사 잠수함의 연료전지 시스템 및 그 연료전지 시스템의 가스 제거방법
JP2017117542A (ja) * 2015-12-21 2017-06-29 トヨタ自動車株式会社 燃料電池車両のガス供給システム

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DE112019006449T5 (de) 2021-09-23

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