CN112599818A - Water management system of proton fuel cell - Google Patents
Water management system of proton fuel cell Download PDFInfo
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- CN112599818A CN112599818A CN202011467970.4A CN202011467970A CN112599818A CN 112599818 A CN112599818 A CN 112599818A CN 202011467970 A CN202011467970 A CN 202011467970A CN 112599818 A CN112599818 A CN 112599818A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04432—Pressure differences, e.g. between anode and cathode
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04492—Humidity; Ambient humidity; Water content
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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
The invention discloses a water management system of a proton fuel cell in the technical field of a water management system of the cell, which comprises a galvanic pile, an air supply system, a hydrogen supply system, an air-water-vapor separation system, a hydrogen-water-vapor separation system, a humidification system, a condensate recovery system and a signal control system, wherein a flow device at the hydrogen/air inlet end, a humidifier, a humidity sensor, a temperature sensor, a pressure sensor, a pulse bypass valve and the like, as well as a pressure sensor at the air outlet end, a humidity sensor and the like are connected with the signal control system to exchange signals and data, the set value or threshold value of each parameter is written in a main program in advance, and the system is automatically monitored when in operation, the invention interactively compares the pressure difference between the positive pole and the negative pole of the galvanic pile and the humidity change of an air outlet with the preset value in the main program in real time, the water in the galvanic pile is effectively managed, so that the faults of water flooding and membrane drying are avoided.
Description
Technical Field
The invention relates to the technical field of a battery water management system, in particular to a proton fuel cell water management system.
Background
Proton Exchange Membrane Fuel Cells (PEMFC) are becoming more and more widespread due to their high efficiency and environmental protectionApplication is carried out. The PEMFC has a basic unit composed of an anode, a cathode, an electrolyte, and an external circuit, etc. At the anode, hydrogen gas flows through the bipolar plate flow channels, through the Gas Diffusion Layer (GDL), and to the Catalyst Layer (CL). At the anode, CL, hydrogen is split into protons (H)+) And electron (e)-) The protons penetrate the proton membrane to the CL of the cathode. But the electrons cannot pass through the proton membrane and can only reach the cathode via an external circuit, thus generating an electric current. At the same time, at the cathode, air or pure oxygen flows through the bipolar plate flow channels, through the GDL, to the CL. At cathode CL, O2And H from the anode+And e-Reaction to produce water (H)2O) and thermal energy. In the electrochemical reaction process of the fuel cell, water is not only a reaction product, but also a basic guarantee for maintaining the wettability of the proton exchange membrane and ensuring high-efficiency, reliable and long-term stable operation of the system
The reasonable hydration of the proton membrane is an important index for maintaining the stable operation of the PEMFC, high electric conversion rate and durability. To ensure hydration of the proton membrane, the reaction gas is usually humidified to a suitable extent. In the working temperature range (80-95 ℃) of the PE MFC, condensation is inevitably generated in water produced by electrochemical reaction, and liquid water fills micropores in an electrode area, namely, a flooding phenomenon. If the excess water is not removed in time, the reaction gas is severely prevented from being transferred to the reaction region, which affects the electrical performance of the battery. Water and electric drag H produced due to electrochemical reaction+Water from the anode is accumulated at the cathode, and thus a serious flooding phenomenon mostly occurs at the cathode. On the other hand, H+The action of the electrical drag also causes the proton membrane on the anode side to dry, resulting in increased resistance on the anode side, more heat generation, and increased temperature, further deteriorating the proton membrane. In a stack, the distribution of water may not be uniform from cell to cell, some cells may be flooded, and others may be dry. Water management is of particular importance to achieve good hydration of the proton membrane in the stack.
The reasonable hydration of the proton membrane is an important index for maintaining the stable operation of the PEMFC, high electric conversion rate and durability. When the galvanic pile is in operation, in order to ensure that the proton membrane in the galvanic pile has enough wettability, the input gases of the cathode and the anode are properly humidified, and high-sensitivity humidity sensors are arranged at the inlet and the outlet. Experimental studies have found that when the humidity of the exhaust port is lowered to a certain value, the output performance of the battery is lowered due to the dryness of the membrane. A series of experiments and calculations prove that a certain value of the humidity of the exhaust port can be used as a threshold value for judging whether the film is dry or not.
Based on the above, the invention aims to design a water management system of a proton fuel cell, which is used for effectively managing water inside a stack so as to avoid the faults of water flooding and membrane dryness.
Disclosure of Invention
It is an object of the present invention to provide a water management system for a proton fuel cell to solve the above-mentioned problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a water management system of a proton fuel cell comprises an electric pile, an air supply system, a hydrogen supply system, an air-water-vapor separation system, a hydrogen-water-vapor separation system, a humidification system, a condensate recovery system and a signal control system;
an output air pipe of the air supply system is connected with the galvanic pile, and an input air pipe of the air-water-vapor separation system is connected with the galvanic pile;
an output gas pipe of the hydrogen gas supply system is connected with the galvanic pile, and an input gas pipe of the hydrogen gas-water separation system is connected with the galvanic pile;
the output water pipe of the humidifying system is respectively connected with the galvanic pile, the air supply system and the hydrogen supply system;
an input water pipe of the condensate recovery system is respectively connected with the galvanic pile, the air water-vapor separation system and the hydrogen water-vapor separation system, and an output water pipe of the condensate recovery system is connected with the humidification system;
and the signal control system is used for automatically monitoring the management system.
Preferably, air supply system and hydrogen gas supply system all include gaseous governing system, air supply system comprises gaseous governing system and the air compressor machine of being connected with it, hydrogen gas supply system comprises gaseous governing system and the hydrogen gas supply machine of being connected with it.
Preferably, the gas regulating system comprises a pressure regulating valve, a first flow meter, a humidifier, a humidity sensor, a temperature sensor, a pressure sensor, a pulse by-pass valve and a second flow meter;
preferably, the pressure regulating valve, the first flowmeter, the humidifier, the humidity sensor and the temperature sensor are sequentially connected with the pressure sensor, and the air flow enters the galvanic pile after passing through the pressure sensor;
preferably, the pulse bypass valve is connected with the second flowmeter, an input pipe of the pulse bypass valve is connected to a pipe wall between the pressure regulating valve and the first flowmeter, and an output pipe of the second flowmeter is connected to a pipe wall between the humidity sensor and the temperature sensor.
Preferably, the air-water-vapor separation system consists of a pressure sensor, a humidity sensor, a water-gas separator and an air discharge valve which are connected in sequence, an air-water-vapor outlet pipe of the galvanic pile is connected with the air-water-vapor separation system through the pressure sensor, and the water-gas separator in the air-water-vapor separation system is also connected with a condensate recovery system.
Preferably, the hydrogen water vapor separation system comprises pressure sensor, humidity transducer, water vapor separator and the hydrogen return pump that connects gradually, the air water vapor outlet pipe of galvanic pile passes through pressure sensor and connects hydrogen water vapor separation system, the hydrogen air feed system is connected to the outlet duct of hydrogen return pump, and the two tie point is located between hydrogen air feeder and the air-vent valve, and hydrogen water vapor separation system's water vapor separator still is connected with condensate recovery system.
Preferably, the humidification system includes water tank, water pump, ion exchanger, flow divider and cooling water inlet valve, be equipped with spacing sensor about the water in the water tank, be connected with the electronic overflow valve on the water tank, the drinking-water union coupling water tank inner chamber of water pump, the water pump passes through ion exchanger and is connected with the flow divider, still be equipped with the conductivity sensor on the ion exchanger, the flow divider passes through the cooling water inlet valve and is connected with the pile, the flow divider still passes through the pipeline and is connected with the humidifier in air gas supply system's the humidifier and the hydrogen gas supply system respectively.
Preferably, the condensate recovery system comprises a cooling water outlet valve, a water return pump, a condenser and a water pump which are connected in sequence, the cooling water outlet valve is connected to a cooling water outlet end of the galvanic pile, an output water pipe of the water pump is connected with a water tank in the humidification system, a water-gas separator in the air-water-vapor separation system is connected with the condenser, and the water-gas separator of the hydrogen-water-vapor separation system is connected with the condenser.
Compared with the prior art, the invention has the beneficial effects that: the invention carries out real-time interactive comparison on the pressure difference between the anode and the cathode of the galvanic pile and the humidity change of the exhaust port with the preset numerical value in the main control program, and effectively manages the water in the galvanic pile, thereby avoiding the faults of water logging and dry membrane.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic view of an air supply system according to the present invention;
FIG. 3 is a schematic view of a hydrogen gas supply system according to the present invention;
FIG. 4 is a schematic view of an air water vapor separation system of the present invention;
FIG. 5 is a schematic view of a hydrogen gas water vapor separation system of the present invention;
FIG. 6 is a schematic view of a humidification system of the present invention;
FIG. 7 is a schematic view of a condensate recovery system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 7, the present invention provides a technical solution: a water management system of a proton fuel cell comprises an electric pile, an air supply system 1, a hydrogen supply system 2, an air-water-vapor separation system 3, a hydrogen-water-vapor separation system 4, a humidification system, a condensate recovery system and a signal control system;
an output air pipe of the air supply system 1 is connected with the galvanic pile, and an input air pipe of the air-water-vapor separation system 3 is connected with the galvanic pile;
an output gas pipe of the hydrogen gas supply system 2 is connected with the galvanic pile, and an input gas pipe of the hydrogen gas-water separation system 4 is connected with the galvanic pile;
an output water pipe of the humidification system is respectively connected with the galvanic pile, the air supply system 1 and the hydrogen supply system 2;
an input water pipe of the condensate recovery system is respectively connected with the galvanic pile, the air water-vapor separation system 3 and the hydrogen water-vapor separation system 4, and an output water pipe of the condensate recovery system is connected with the humidification system;
and the signal control system is used for automatically monitoring the management system.
Further, the air supply system 1 and the hydrogen supply system 2 both comprise a gas regulating system, the air supply system 1 comprises a gas regulating system and an air compressor connected with the gas regulating system, and the hydrogen supply system 2 comprises a gas regulating system and a hydrogen supply machine connected with the gas regulating system.
Further, the gas regulating system comprises a pressure regulating valve, a first flowmeter, a humidifier, a humidity sensor, a temperature sensor, a pressure sensor, a pulse bypass valve and a second flowmeter;
further, the pressure regulating valve, the first flowmeter, the humidifier, the humidity sensor and the temperature sensor are sequentially connected with the pressure sensor, and airflow enters the galvanic pile after passing through the pressure sensor;
furthermore, the pulse bypass valve is connected with the second flowmeter, an input pipe of the pulse bypass valve is connected to a pipe wall between the pressure regulating valve and the first flowmeter, and an output pipe of the second flowmeter is connected to a pipe wall between the humidity sensor and the temperature sensor.
Further, the air-water-vapor separation system 3 is composed of a pressure sensor, a humidity sensor, a water-gas separator and an air discharge valve which are sequentially connected, an air-water-vapor outlet pipe of the galvanic pile is connected with the air-water-vapor separation system 3 through the pressure sensor, and the water-gas separator in the air-water-vapor separation system 3 is further connected with a condensate recovery system.
Further, the hydrogen-water-vapor separation system 4 is composed of a pressure sensor, a humidity sensor, a water-gas separator and a hydrogen return pump which are sequentially connected, an air-water-vapor outlet pipe of the galvanic pile is connected with the hydrogen-water-vapor separation system 4 through the pressure sensor, an air outlet pipe of the hydrogen return pump is connected with the hydrogen gas supply system 2, a connecting point of the hydrogen-gas supply machine and the pressure regulating valve is located between the hydrogen gas supply machine and the pressure regulating valve, and the water-gas separator of the hydrogen-water-vapor separation system 4 is.
Furthermore, the humidification system comprises a water tank, a water pump, an ion exchanger, a diverter valve and a cooling water inlet valve, wherein an upper limit sensor and a lower limit sensor are arranged in the water tank, the water tank is connected with an electronic overflow valve, a water suction pipe of the water pump is connected with an inner cavity of the water tank, the water pump is connected with the diverter valve through the ion exchanger, the ion exchanger is further provided with a conductivity sensor, the diverter valve is connected with the electric pile through the cooling water inlet valve, and the diverter valve is further connected with a humidifier of the air supply system 1 and a humidifier in the hydrogen supply system 2 through pipelines.
Furthermore, the condensate recovery system is composed of a cooling water outlet valve, a water return pump, a condenser and a water pump which are sequentially connected, the cooling water outlet valve is connected to a cooling water outlet end of the galvanic pile, an output water pipe of the water pump is connected with a water tank in the humidification system, a water-gas separator in the air-water-vapor separation system 3 is connected with the condenser, and a water-gas separator in the hydrogen-water-vapor separation system 4 is connected with the condenser.
In the system, a flow device, a humidifier, a humidity sensor, a temperature sensor, a pressure sensor, a pulse bypass valve and the like at the hydrogen/air inlet end, a pressure sensor, a humidity sensor and the like at the air outlet end are connected with a signal control system to exchange signals and data, set values or threshold values of all parameters are written in a main program in advance, and the system is automatically monitored when in operation.
The working principle is as follows:
when the galvanic pile operates, the generation and consumption of water in the system are in a dynamic state, and the invention adopts the circulating water pump to collect and utilize the water generated by the reaction. The water and the residual gas are separated by the water-gas mixture discharged from the negative/positive side through a water-gas separator. The residual hydrogen of the anode is input to the air inlet end by the hydrogen return pump for utilization, so as to avoid waste. The residual air on the cathode side is directly discharged. The water separated from the male/female side is pumped into the water tank by a water pump through a condenser. The water tank is provided with an upper water level sensor and a lower water level sensor, and the water level sensors are connected with the water pump through the control panel, so that the water tank can be ensured to have sufficient water quantity to supply the electric pile for operation. When the water level of the water tank reaches the upper limit, the upper water level sensor transmits a signal to the electronic overflow valve through the control panel to automatically discharge redundant water;
the water collected from the galvanic pile can also be used as cooling water of the galvanic pile, namely, a cooling system and a humidifying system of the galvanic pile can use the same water source, so that the whole volume of the system can be reduced, and the manufacturing cost can be reduced;
as a water source for supplying and humidifying the air for the galvanic pile, the requirement of low conductivity of water for the galvanic pile must be met. Before entering the stack, an ion exchanger is installed with a water conductivity sensor. The signal of the sensor is connected with the control panel, when the conductivity of the water exceeds a set value, the system can send out an alarm signal, and the filtering device of the ion exchanger needs to be replaced.
Membrane dry monitoring principle: the humidifying quantity of the humidifier at the air inlet end is automatically controlled by a humidity sensor through a main program and is connected with the humidity sensor at the air outlet end. When the humidity of the air outlet end is lower than a threshold value RH set in a program, the moisture content in the galvanic pile is considered to be in a dry film state at the moment, and the system automatically adjusts the humidification quantity until the humidity of the air outlet end reaches a set requirement.
The principle of monitoring flooding: the pressure sensors at the inlet and outlet ends transmit the pressure readings to the control panel in real time for pressure difference calculation, and the pressure readings are compared with a threshold value set in a program. When the pressure difference exceeds the threshold value, the water content in the galvanic pile is considered to be in a water-flooded state at the moment, the signal is transmitted to the pulse bypass valve, the bypass valve is opened to input excessive dry gas to the galvanic pile, the aim is to dilute the humidity of the input gas, more importantly, the flow of the gas in the galvanic pile is increased, and the excessive water is accelerated to be discharged until the pressure difference returns to the normal set range.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above disclosure of further embodiments of the invention is intended only to facilitate the explanation of the invention. Further examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A water management system of a proton fuel cell is characterized by comprising an electric pile, an air supply system (1), a hydrogen supply system (2), an air-water-vapor separation system (3), a hydrogen-water-vapor separation system (4), a humidification system, a condensate recovery system and a signal control system;
an output air pipe of the air supply system (1) is connected with the galvanic pile, and an input steam pipe of the air-water-vapor separation system (3) is connected with the galvanic pile;
an output gas pipe of the hydrogen gas supply system (2) is connected with the galvanic pile, and an input gas pipe of the hydrogen gas-water separation system (4) is connected with the galvanic pile;
the output water pipe of the humidification system is respectively connected with the galvanic pile, the air supply system (1) and the hydrogen supply system (2);
an input water pipe of the condensate recovery system is respectively connected with the galvanic pile, the air water-vapor separation system (3) and the hydrogen water-vapor separation system (4), and an output water pipe of the condensate recovery system is connected with the humidification system;
and the signal control system is used for automatically monitoring the management system.
2. A proton fuel cell water management system as claimed in claim 1, wherein: air supply system (1) and hydrogen gas supply system (2) all include gas conditioning system, air supply system (1) comprises gas conditioning system and the air compressor machine of being connected with it, hydrogen gas supply system (2) comprises gas conditioning system and the hydrogen gas supply machine of being connected with it.
3. A proton fuel cell water management system as recited in claim 2, wherein: the gas regulating system comprises a pressure regulating valve, a first flowmeter, a humidifier, a humidity sensor, a temperature sensor, a pressure sensor, a pulse bypass valve and a second flowmeter;
the pressure regulating valve, the first flowmeter, the humidifier, the humidity sensor, the temperature sensor and the pressure sensor are sequentially connected, and airflow enters the electric pile after passing through the pressure sensor;
the pulse bypass valve is connected with the second flowmeter, an input pipe of the pulse bypass valve is connected to a pipe wall between the pressure regulating valve and the first flowmeter, and an output pipe of the second flowmeter is connected to a pipe wall between the humidity sensor and the temperature sensor.
4. A proton fuel cell water management system as claimed in claim 3, wherein: the air-water-vapor separation system (3) is composed of a pressure sensor, a humidity sensor, a water-gas separator and an air discharge valve which are sequentially connected, an air-water-vapor outlet pipe of the galvanic pile is connected with the air-water-vapor separation system (3) through the pressure sensor, and the water-gas separator in the air-water-vapor separation system (3) is further connected with a condensate recovery system.
5. A proton fuel cell water management system as claimed in claim 4, wherein: hydrogen steam and water separation system (4) comprises pressure sensor, humidity transducer, water vapor separator and the hydrogen return pump that connects gradually, the air steam outlet pipe of galvanic pile passes through pressure sensor and connects hydrogen steam and water separation system (4), hydrogen gas supply system (2) is connected to the outlet duct of hydrogen return pump, and the two tie point is located between hydrogen gas supply machine and the air-vent valve, and the water vapor separator of hydrogen steam and water separation system (4) still is connected with condensate recovery system.
6. A proton fuel cell water management system as claimed in claim 5, wherein: the humidifying system comprises a water tank, a water pump, an ion exchanger, a diverter valve and a cooling water inlet valve, wherein an upper water limiting sensor and a lower water limiting sensor are arranged in the water tank, the water tank is connected with an electronic overflow valve, a water suction pipe of the water pump is connected with an inner cavity of the water tank, the water pump is connected with the diverter valve through the ion exchanger, a conductivity sensor is further arranged on the ion exchanger, the diverter valve is connected with a pile through the cooling water inlet valve, and the diverter valve is further connected with a humidifier of the air supply system (1) and a humidifier in the hydrogen supply system (2) through pipelines.
7. A proton fuel cell water management system as recited in claim 6, wherein: the condensate recovery system is composed of a cooling water outlet valve, a water return pump, a condenser and a water pump which are sequentially connected, wherein the cooling water outlet valve is connected to a cooling water outlet end of the galvanic pile, an output water pipe of the water pump is connected with a water tank in the humidification system, a water-gas separator in the air-water-vapor separation system (3) is connected with the condenser, and a water-gas separator of the hydrogen-water-vapor separation system (4) is connected with the condenser.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097535A (en) * | 2021-04-06 | 2021-07-09 | 吉林大学 | Water heat management system of self-humidifying fuel cell and control method thereof |
| CN113285102A (en) * | 2021-05-21 | 2021-08-20 | 张家港清研检测技术有限公司 | Multi-parameter control system for fuel cell stack |
| CN113299956A (en) * | 2021-04-28 | 2021-08-24 | 一汽解放汽车有限公司 | Fuel cell engine test system |
| CN113809359A (en) * | 2021-08-16 | 2021-12-17 | 华南理工大学 | Water management system and control method for proton exchange membrane fuel cell |
| CN115084604A (en) * | 2022-08-03 | 2022-09-20 | 大连一元氢能源科技有限公司 | High-power fuel cell cathode water recycling, humidifying and reusing system |
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