CN113161579A - Multifunctional proton exchange membrane fuel cell component in-loop test bench - Google Patents
Multifunctional proton exchange membrane fuel cell component in-loop test bench Download PDFInfo
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- CN113161579A CN113161579A CN202110355965.2A CN202110355965A CN113161579A CN 113161579 A CN113161579 A CN 113161579A CN 202110355965 A CN202110355965 A CN 202110355965A CN 113161579 A CN113161579 A CN 113161579A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04708—Temperature of fuel cell reactants
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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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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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
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
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- 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
- H01M8/04828—Humidity; Water content
- H01M8/04835—Humidity; Water content of fuel cell reactants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention provides an in-loop test bench for a multifunctional proton exchange membrane fuel cell component, which comprises an air supply system, a hydrogen supply system, a hydrothermal management system, a component cooling system, a nitrogen purging system, an electronic load system, a control system and a fuel cell stack, wherein the air supply system is connected with the hydrogen supply system; the component cooling system is connected with the air supply system; the air supply system is connected with the hydrogen supply system through a nitrogen purging system; the control system is connected with the fuel cell stack through an electronic load system. The multifunctional proton exchange membrane fuel cell component on-ring test bench has the functions of basic air supply, cooling, control and the like, also has the advantages of a fuel cell stack test bench and a fuel cell engine, can realize comprehensive and accurate measurement of various physical quantities, and can completely reproduce working conditions and performances under a loading state; parts with different specifications can be replaced to realize measurement of different galvanic piles; and the measurement of the parts can be realized.
Description
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to an in-loop test bench for a multifunctional proton exchange membrane fuel cell component.
Background
The proton exchange membrane fuel cell stack is a power generation device taking hydrogen and air as carriers, has the advantages of high power generation efficiency, high power density, short dynamic response time, low reaction temperature, cleanness, environmental protection and the like, and has wide development prospect in the fields of traffic and energy.
During the development of fuel cell stacks, fuel cell stack testing is an indispensable link. The fuel cell stack testing bench has high control precision and measurement precision, the simulation of all parameters is in an optimal state, the comprehensive evaluation of the performance of the fuel cell stack in the early development stage is facilitated, but the control of all parameters is not realized by using real vehicle parts, and the working conditions and the performance in the loading state cannot be completely duplicated.
On the other hand, the fuel cell stack test rack does not have functions such as hydrogen cycle simulation and air intake and exhaust heat and humidity exchange, and therefore the fuel cell stack test rack cannot perform a test in this respect.
In the fuel cell engine, due to the requirements of compact installation, cost and the like, comprehensive and accurate measurement of each physical quantity cannot be realized. Therefore, although the components are all on the vehicle level, the accuracy of the test on the level of the stack test bench cannot be realized.
Therefore, it is necessary to develop a test bench that can simultaneously realize real vehicle parts and high-precision measurement.
Disclosure of Invention
In view of the above, the present invention is directed to a multifunctional pem fuel cell component in-loop test bench to solve the problem that the fuel cell engine cannot achieve comprehensive and accurate measurement of various physical quantities due to requirements of compact installation, cost, etc.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a multifunctional proton exchange membrane fuel cell component in-loop test bench comprises an air supply system, a hydrogen supply system, a hydrothermal management system, a component cooling system, a nitrogen purging system, an electronic load system, a control system and a fuel cell stack;
the air supply system and the hydrogen supply system are respectively connected with the control system and the fuel cell stack, the controlled end of the hydrothermal management system is connected with the control system, and the control end of the hydrothermal management system is connected with the fuel cell stack;
the component cooling system is connected with the air supply system;
the air supply system is connected with the hydrogen supply system through a nitrogen purging system;
the control system is connected with the fuel cell stack through an electronic load system.
Further, the air supply system comprises a first filter, an air pressurization unit, an air quality flow control unit, an air temperature control unit, an air automatic back pressure control unit, an air humidification unit, an air water-gas separation unit, a first temperature and humidity sensor, a first pressure sensor and a first single direction, wherein the first filter, the air pressurization unit, the air quality flow control unit, the air temperature control unit and the air humidification unit are sequentially connected, a first outlet of the air humidification unit is connected with the fuel cell stack, an inlet of the air automatic back pressure control unit is connected with the fuel cell stack, an outlet of the air automatic controlled by a pressure control unit is connected with an inlet of the air humidification unit, and a second outlet of the air humidification unit is connected with the air water-gas separation unit;
the first temperature and humidity sensor, the first pressure sensor and the first one-way valve are respectively provided with two groups, wherein one group is connected between the first outlet of the air humidifying unit and the fuel cell stack, and the other group is connected between the fuel cell stack and the air automatic controlled unit.
Furthermore, a second temperature sensor is connected to the outlet of the air water-gas separation unit.
Further, the hydrogen supply system comprises a hydrogen storage and supply unit, a hydrogen pressure control unit, a hydrogen mass flow control unit, a hydrogen circulation unit, a hydrogen-water separation unit, a hydrogen automatic back pressure control unit, a first electromagnetic valve, a third temperature and humidity sensor, a second pressure sensor and a second one-way valve;
the hydrogen supply unit, the hydrogen pressure control unit and the hydrogen mass flow control unit are sequentially connected, an outlet of the hydrogen mass flow control unit is connected with an input port of the fuel cell stack, one end of the hydrogen water-gas separation unit is connected with an output port of the fuel cell stack, the other end of the hydrogen water-gas separation unit is connected with one end of the hydrogen circulation unit, and the other end of the hydrogen circulation unit is connected with an output port of the hydrogen mass flow control unit;
the first electromagnetic valve is arranged between the hydrogen storage and supply unit and the hydrogen pressure control unit;
the third temperature and humidity sensor, the second pressure sensor and the second one-way valve are respectively provided with two groups, wherein one group is connected between the hydrogen mass flow control unit and the fuel cell stack, and the other group is connected between the fuel cell stack and the hydrogen water-gas separation unit;
the hydrogen automatic pressure controlled unit is connected with the output end of the hydrogen water-gas separation unit.
Further, the hydrothermal management system comprises a first water pump, a first radiator, a first heater, a thermostat, a first cooling liquid flow meter, a conductivity sensor, a first temperature sensor and a third pressure sensor;
one end of a first radiator is connected with one end of a first water pump, the other end of the first water pump is connected with one end of a first heater, the other end of the first heater is connected with one end of a first cooling liquid flowmeter, the other end of the first cooling liquid flowmeter is connected with an inlet of the fuel cell stack, one end of a thermostat is connected with the other end of the first radiator, the other end of the thermostat is connected with one end of a conductivity sensor, and the other end of the conductivity sensor is connected with an outlet of the fuel cell stack;
the first temperature sensor and the third pressure sensor are respectively provided with two groups, wherein one group is connected between the first cooling liquid flowmeter and the fuel cell stack, and the other group is connected between the conductivity sensor and the fuel cell stack.
Further, the component cooling system comprises a second water pump, a second radiator, a second cooling liquid flow meter, a second temperature sensor and a fourth pressure sensor;
one end of a second radiator is connected with one end of a second water pump, the other end of the second water pump is connected with one end of a second cooling liquid flow meter, the other end of the second cooling liquid flow meter is connected with an air pressurization unit, and the other end of the second radiator is connected with an air temperature control unit;
the second temperature sensor and the fourth pressure sensor are respectively provided with two groups, one end of one group of the second temperature sensor and one end of the fourth pressure sensor are respectively connected with the other end of the second cooling liquid flow meter, the other end of the second temperature sensor and the other end of the fourth pressure sensor are respectively connected with the air pressurization unit, one end of the other group of the second temperature sensor and one end of the fourth pressure sensor are connected with the radiator, and the other end of the other group of the second temperature sensor and the other end of the fourth pressure sensor are connected with the air temperature control unit.
Further, the nitrogen purging system comprises a second filter, a pressure regulating unit, a second electromagnetic valve and a third one-way valve;
one end of the second filter is connected with the nitrogen supply end, the other end of the second filter is connected with one end of the pressure adjusting unit, the other end of the pressure adjusting unit is respectively connected with the air supply system and the hydrogen supply system, the second electromagnetic valve and the third one-way valve comprise two groups, one group of the second electromagnetic valve and the third one-way valve is connected between the pressure adjusting unit and the air supply system, and the other group of the second electromagnetic valve and the third one-way valve is connected between the pressure adjusting unit and the hydrogen supply system.
Furthermore, the control system comprises a control unit, a data acquisition unit, a data analysis processing unit and a fault diagnosis and alarm unit, the control unit, the data acquisition unit, the data analysis processing unit and the fault diagnosis and alarm unit are sequentially connected, the control unit is respectively connected with an air supply system, a hydrogen supply system, a hydrothermal management system, a component cooling system and a nitrogen purging system, and the fault diagnosis and alarm unit is connected with one end of the electronic load system.
Further, the electronic load system includes an electronic load.
Compared with the prior art, the multifunctional proton exchange membrane fuel cell part in-loop test bench has the following beneficial effects:
the multifunctional proton exchange membrane fuel cell component on-ring test bench has the functions of basic air supply, cooling, control and the like, also has the advantages of a fuel cell stack test bench and a fuel cell engine, can realize comprehensive and accurate measurement of various physical quantities, and can completely reproduce working conditions and performances under a loading state. Parts with different specifications can be replaced to realize measurement of different galvanic piles; and the measurement of the parts can be realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a multifunctional pem fuel cell component in-loop test bench according to an embodiment of the present invention.
Description of reference numerals:
1. a component cooling system; 2. an air supply system; 3. a nitrogen purge system; 4. a hydrogen supply system; 5. a hydrothermal management system; 6. a control system; 7. an electronic load system.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, an on-loop testing bench for a multi-functional pem fuel cell component comprises an air supply system 2, a hydrogen supply system 4, a hydrothermal management system 5, a component cooling system 1, a nitrogen purging system 3, an electronic load system 7, a control system 6 and a fuel cell stack;
the air supply system 2 and the hydrogen supply system 4 are respectively connected with the control system 6 and the fuel cell stack, the controlled end of the hydrothermal management system 5 is connected with the control system 6, and the control end is connected with the fuel cell stack;
the component cooling system 1 is connected with an air supply system 2;
the air supply system 2 is connected with the hydrogen supply system 4 through the nitrogen purging system 3;
the control system 6 is connected to the fuel cell stack via an electronic load system 7.
The air supply system 2 comprises a first filter, an air pressurization unit, an air mass flow control unit, an air temperature control unit, an air automatic back pressure control unit, an air humidification unit, an air water-gas separation unit, a first temperature and humidity sensor, a first pressure sensor and a first single direction, wherein the first filter, the air pressurization unit, the air mass flow control unit, the air temperature control unit and the air humidification unit are sequentially connected, a first outlet of the air humidification unit is connected with the fuel cell stack, an inlet of the air automatic back pressure control unit is connected with the fuel cell stack, an outlet of the air automatic controlled by pressure control unit is connected with an inlet of the air humidification unit, and a second outlet of the air humidification unit is connected with the air water-gas separation unit;
the first temperature and humidity sensor, the first pressure sensor and the first one-way valve are respectively provided with two groups, wherein one group is connected between the first outlet of the air humidifying unit and the fuel cell stack, and the other group is connected between the fuel cell stack and the air automatic controlled unit;
and the outlet of the air water-gas separation unit is also connected with a second temperature sensor.
The air supply system supplies air to the product to be tested;
the first filter is used for filtering impurities in the air; the air pressurization unit realizes air pressure increase; the air quality flow control unit realizes accurate control on air flow; the air temperature control unit realizes accurate control of the air temperature; the air automatic back pressure control unit realizes accurate control on air pressure; the air humidifying unit increases and controls the air humidity; the air water-gas separation unit is used for separating moisture in air at the outlet of the electric pile; the first temperature and humidity sensor and the first pressure sensor monitor the dew point temperature and the pressure of the air side of the fuel cell in real time.
The air passes through the filter before entering the test bench, and redundant physical and chemical impurities in the air are filtered. The air supercharging unit mainly comprises a controller, an air compressor, a throttle valve and a intercooler; and the controller adjusts the rotating speed of the air compressor and the opening of the throttle according to the actual measured flow and the target measured flow so as to realize accurate control of the flow and the pressure. The air mass flow control unit mainly comprises a flowmeter; the flow meter controls the air flow in conjunction with the air charging unit. The air temperature control unit mainly comprises an intercooler; the intercooler realizes the cooling to charge air, controls charge air's temperature. The air automatic back pressure control unit mainly comprises a back pressure valve and a throttle valve; the control system controls the opening of the back pressure valve and the throttle valve to realize the accurate control of the pressure at the air outlet side of the pile. The air humidifying unit mainly comprises a humidifier; the humidifier increases the humidity of the air so as to meet the requirement of the electric pile test. The air water-gas separation unit mainly comprises a water-gas separator and a radiator; the radiator cools air at an air side outlet of the electric pile; the water-gas separator separates liquid water in the air, and the liquid water is collected and used for water management research of the electric pile. The temperature sensor, the humidity sensor and the pressure sensor are used for monitoring the temperature, the humidity and the pressure of an air inlet and an air outlet of the fuel cell in real time, so that the temperature, the humidity and the pressure of air inlet and air outlet are prevented from exceeding limit values, and meanwhile, the temperature sensor, the humidity sensor and the pressure sensor are used for feeding back signals and monitoring key sites of other key parts of an air supply system.
The hydrogen supply system 4 comprises a hydrogen storage and supply unit, a hydrogen pressure control unit, a hydrogen mass flow control unit, a hydrogen circulation unit, a hydrogen-water separation unit, an automatic hydrogen back pressure control unit, a first electromagnetic valve, a third temperature and humidity sensor, a second pressure sensor and a second one-way valve;
the hydrogen supply unit, the hydrogen pressure control unit and the hydrogen mass flow control unit are sequentially connected, an outlet of the hydrogen mass flow control unit is connected with an input port of the fuel cell stack, one end of the hydrogen water-gas separation unit is connected with an output port of the fuel cell stack, the other end of the hydrogen water-gas separation unit is connected with one end of the hydrogen circulation unit, and the other end of the hydrogen circulation unit is connected with an output port of the hydrogen mass flow control unit;
the first electromagnetic valve is arranged between the hydrogen storage and supply unit and the hydrogen pressure control unit;
the third temperature and humidity sensor, the second pressure sensor and the second one-way valve are respectively provided with two groups, wherein one group is connected between the hydrogen mass flow control unit and the fuel cell stack, and the other group is connected between the fuel cell stack and the hydrogen water-gas separation unit;
the hydrogen automatic controlled by pressure unit is connected with the output end of the hydrogen water-gas separation unit;
the two second one-way valves are respectively connected with an outlet and an inlet of the fuel cell stack, the two third temperature and humidity sensors respectively comprise a temperature sensor probe and a humidity sensor probe, one of the temperature sensor probes is connected with the hydrogen mass flow control end element, and the humidity sensor probe is connected with the inlet of the fuel cell stack. The other temperature sensor probe is connected with the outlet of the fuel cell stack, and the other humidity sensor probe is connected with the hydrogen-water separation unit;
the third temperature sensor can adopt the following types: HMPX7E1E2B0A0H1 temperature and humidity sensor.
The hydrogen storage and supply unit realizes the storage and supply of hydrogen; the hydrogen pressure control unit realizes accurate control of the hydrogen pressure; the hydrogen mass flow control unit realizes accurate control of hydrogen flow; the hydrogen circulation unit realizes the cyclic utilization of hydrogen and improves the utilization rate of the hydrogen; the hydrogen-water-gas separation unit is used for separating water in the hydrogen at the outlet of the galvanic pile; the hydrogen automatic back pressure control unit is used for assisting in controlling the pressure and flow of the hydrogen side of the galvanic pile; and the third temperature and humidity sensor and the second pressure sensor monitor the dew point temperature and the pressure of the hydrogen side of the fuel cell in real time.
The hydrogen storage and supply unit mainly comprises a gas cylinder, a combination valve and a pressure reducing valve; the gas cylinder realizes the storage of hydrogen; the combined valve is arranged at the opening of the gas cylinder, so that the filling, the output and the safety guarantee of hydrogen are realized; the pressure reducing valve reduces the pressure of the hydrogen gas from a high pressure to a low pressure. The hydrogen pressure control unit mainly comprises an electronic pressure regulator; the electronic pressure regulator can automatically regulate the inlet pressure of the electric pile according to the requirement. The hydrogen mass flow control unit mainly comprises a flowmeter and a hydrogen ejector; the flow meter and the hydrogen injector control the hydrogen flow rate in conjunction with the hydrogen pressure control unit. The hydrogen circulating unit mainly comprises a circulating pump; the circulating pump circulates the hydrogen at the outlet of the galvanic pile to the inlet of the galvanic pile, so that the utilization rate of the hydrogen is improved. The hydrogen gas-water separation unit mainly comprises a water-gas separator and a radiator; the radiator cools the hydrogen at the air side outlet of the pile; and liquid water in the hydrogen is separated by the water-gas separator, collected and used for water management research of the electric pile. The hydrogen automatic back pressure control unit mainly comprises a hydrogen discharge valve; the control system controls the opening and closing frequency of the hydrogen discharge valve to realize the accurate control of the pressure at the hydrogen outlet side of the pile. The temperature sensor, the humidity sensor and the pressure sensor are used for monitoring the temperature, the humidity and the pressure of the inlet and the outlet of the anode side of the fuel cell in real time, the temperature, the humidity and the pressure of inlet air and outlet air are prevented from exceeding limit values, and meanwhile, the temperature, the humidity and the pressure sensor are used for feeding back signals and monitoring key sites of other key parts of a hydrogen supply system.
The hydrothermal management system 5 comprises a first water pump, a first radiator, a first heater, a thermostat, a first cooling liquid flowmeter, a conductivity sensor, a first temperature sensor and a third pressure sensor;
one end of a first radiator is connected with one end of a first water pump, the other end of the first water pump is connected with one end of a first heater, the other end of the first heater is connected with one end of a first cooling liquid flowmeter, the other end of the first cooling liquid flowmeter is connected with an inlet of the fuel cell stack, one end of a thermostat is connected with the other end of the first radiator, the other end of the thermostat is connected with one end of a conductivity sensor, and the other end of the conductivity sensor is connected with an outlet of the fuel cell stack;
the first temperature sensor and the third pressure sensor are respectively provided with two groups, wherein one group is connected between the first cooling liquid flowmeter and the fuel cell stack, and the other group is connected between the conductivity sensor and the fuel cell stack;
adjusting the rotating speed of the water pump and controlling the flow of the cooling liquid; adjusting the rotating speed of a first radiator fan, adjusting the opening of a thermostat, and controlling the temperature of cooling liquid to meet the temperature required by the test; the conductivity sensor, the first temperature sensor and the pressure sensor realize real-time monitoring on the conductivity, the temperature and the pressure of the cooling liquid.
The water heat management system can adjust the rotating speed of the water pump and the flow of the circulating cooling loop through the target required flow, and meanwhile, the water heat management system assists the whole system to adjust the pressure of the circulating cooling loop. The circulating cooling loop temperature may be adjusted by adjusting the radiator fan speed, heater power, and thermostat opening via a target demand temperature. The conductivity of the cooling liquid can be monitored in real time, and damage to the galvanic pile due to overhigh conductivity of the cooling liquid is avoided.
The component cooling system 1 comprises a second water pump, a second radiator, a second cooling liquid flow meter, a second temperature sensor and a fourth pressure sensor;
one end of a second radiator is connected with one end of a second water pump, the other end of the second water pump is connected with one end of a second cooling liquid flow meter, the other end of the second cooling liquid flow meter is connected with an air pressurization unit, and the other end of the second radiator is connected with an air temperature control unit;
two groups of second temperature sensors and four pressure sensors are respectively arranged, one end of one group of second temperature sensors and one end of one group of fourth pressure sensors are respectively connected with the other end of the second cooling liquid flow meter, the other end of the second temperature sensors and the other end of the fourth pressure sensors are respectively connected with the air pressurization unit, one end of the other group of second temperature sensors and one end of the fourth pressure sensors are connected with the radiator, and the other end of the other group of second temperature sensors and the other end of the fourth pressure sensors are connected with the air temperature control unit;
adjusting the rotating speed of the second water pump, and controlling the flow of the cooling liquid; the rotating speed of a fan of the radiator is adjusted, the temperature of the cooling liquid is controlled, and the air inlet temperature of the electric pile in the air supply system is further controlled.
The nitrogen purging system 3 comprises a second filter, a pressure regulating unit, a second electromagnetic valve and a third one-way valve;
one end of the second filter is connected with the nitrogen supply end, the other end of the second filter is connected with one end of the pressure adjusting unit, the other end of the pressure adjusting unit is respectively connected with the air supply system 2 and the hydrogen supply system 4, the second electromagnetic valve and the third one-way valve comprise two groups, one group of the second electromagnetic valve and the third one-way valve is connected between the pressure adjusting unit and the air supply system 2, and the other group of the second electromagnetic valve and the third one-way valve is connected between the pressure adjusting unit and the hydrogen supply system 4;
the pressure regulating unit controls purge pressures of the air supply system and the hydrogen supply system; the one-way valve ensures one-way circulation of the purge gas;
the pressure regulating unit mainly comprises an electronic pressure regulator; the electronic pressure regulator can automatically regulate the test purge pressure according to the test requirement.
The control system 6 comprises a control unit, a data acquisition unit, a data analysis processing unit and a fault diagnosis and alarm unit which are sequentially connected, the control unit is respectively connected with the air supply system 2, the hydrogen supply system 4, the hydrothermal management system 5, the component cooling system 1 and the nitrogen purging system 3, and the fault diagnosis and alarm unit is connected with one end of the electronic load system 7;
the control unit realizes the control of each actuator of the rack, including controlling temperature and humidity. Pressure, flow, speed, load current, temperature, flow of coolant in the component cooling system;
the data acquisition unit is used for acquiring temperature, humidity, pressure, conductivity, rotating speed and flow data in the test bench; collecting the voltage of a single cell of a fuel cell stack; collecting parameters and voltage and current signals of key units in the test board, wherein the key units comprise an air pressurization unit, an air humidification unit, a water pump, a radiator and a hydrogen circulation unit;
the data analysis processing unit is used for analyzing the data acquired by the data acquisition unit and controlling the whole system. The fault diagnosis and alarm unit is used for monitoring and diagnosing safety problems in the test process in real time and alarming in a reflecting mode.
The electronic load system 7 comprises an electronic load, realizes the automatic control of the constant current or constant power loading of the fuel cell, and realizes the over-temperature, under-voltage, over-voltage and over-current protection.
First temperature and humidity sensor, second temperature and humidity sensor, third temperature and humidity sensor all adopt the sensor including temperature sensor probe, humidity transducer probe, and the model is: HMT3307S1D104BCAD100A4FFRVAA1, the manufacturer is: VAISALA;
first pressure sensor, second pressure sensor, third pressure sensor, fourth pressure sensor all adopt the model to be: 520.915S041301, manufacturer: pressure transducer of huba.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a multi-functional proton exchange membrane fuel cell part is at ring test bench which characterized in that: the system comprises an air supply system (2), a hydrogen supply system (4), a hydrothermal management system (5), a component cooling system (1), a nitrogen purging system (3), an electronic load system (7), a control system (6) and a fuel cell stack;
the air supply system (2) and the hydrogen supply system (4) are respectively connected with the control system (6) and the fuel cell stack, the controlled end of the hydrothermal management system (5) is connected with the control system (6), and the control end of the hydrothermal management system (5) is connected with the fuel cell stack;
the component cooling system (1) is connected with the air supply system (2);
the air supply system (2) is connected with the hydrogen supply system (4) through the nitrogen purging system (3);
the control system (6) is connected to the fuel cell stack via an electronic load system (7).
2. The pem fuel cell component-on-ring test rig of claim 1 wherein: the air supply system (2) comprises a first filter, an air pressurization unit, an air quality flow control unit, an air temperature control unit, an air automatic back pressure control unit, an air humidification unit, an air water-gas separation unit, a first temperature and humidity sensor, a first pressure sensor and a first single direction, wherein the first filter, the air pressurization unit, the air quality flow control unit, the air temperature control unit and the air humidification unit are sequentially connected;
the first temperature and humidity sensor, the first pressure sensor and the first one-way valve are respectively provided with two groups, wherein one group is connected between the first outlet of the air humidifying unit and the fuel cell stack, and the other group is connected between the fuel cell stack and the air automatic controlled unit.
3. The pem fuel cell component-on-ring test rig of claim 2, wherein: and the outlet of the air water-gas separation unit is also connected with a second temperature sensor.
4. The pem fuel cell component-on-ring test rig of claim 2, wherein: the hydrogen supply system (4) comprises a hydrogen storage and supply unit, a hydrogen pressure control unit, a hydrogen mass flow control unit, a hydrogen circulation unit, a hydrogen-water separation unit, a hydrogen automatic back pressure control unit, a first electromagnetic valve, a third temperature and humidity sensor, a second pressure sensor and a second one-way valve;
the hydrogen supply unit, the hydrogen pressure control unit and the hydrogen mass flow control unit are sequentially connected, an outlet of the hydrogen mass flow control unit is connected with an input port of the fuel cell stack, one end of the hydrogen water-gas separation unit is connected with an output port of the fuel cell stack, the other end of the hydrogen water-gas separation unit is connected with one end of the hydrogen circulation unit, and the other end of the hydrogen circulation unit is connected with an output port of the hydrogen mass flow control unit;
the first electromagnetic valve is arranged between the hydrogen storage and supply unit and the hydrogen pressure control unit;
the third temperature and humidity sensor, the second pressure sensor and the second one-way valve are respectively provided with two groups, wherein one group is connected between the hydrogen mass flow control unit and the fuel cell stack, and the other group is connected between the fuel cell stack and the hydrogen water-gas separation unit;
the hydrogen automatic pressure controlled unit is connected with the output end of the hydrogen water-gas separation unit.
5. The pem fuel cell component-on-ring test rig of claim 1 wherein: the hydrothermal management system (5) comprises a first water pump, a first radiator, a first heater, a thermostat, a first cooling liquid flow meter, a conductivity sensor, a first temperature sensor and a third pressure sensor;
one end of a first radiator is connected with one end of a first water pump, the other end of the first water pump is connected with one end of a first heater, the other end of the first heater is connected with one end of a first cooling liquid flowmeter, the other end of the first cooling liquid flowmeter is connected with an inlet of the fuel cell stack, one end of a thermostat is connected with the other end of the first radiator, the other end of the thermostat is connected with one end of a conductivity sensor, and the other end of the conductivity sensor is connected with an outlet of the fuel cell stack;
the first temperature sensor and the third pressure sensor are respectively provided with two groups, wherein one group is connected between the first cooling liquid flowmeter and the fuel cell stack, and the other group is connected between the conductivity sensor and the fuel cell stack.
6. The pem fuel cell component-on-ring test rig of claim 2, wherein: the component cooling system (1) comprises a second water pump, a second radiator, a second cooling liquid flow meter, a second temperature sensor and a fourth pressure sensor;
one end of a second radiator is connected with one end of a second water pump, the other end of the second water pump is connected with one end of a second cooling liquid flow meter, the other end of the second cooling liquid flow meter is connected with an air pressurization unit, and the other end of the second radiator is connected with an air temperature control unit;
the second temperature sensor and the fourth pressure sensor are respectively provided with two groups, one end of one group of the second temperature sensor and one end of the fourth pressure sensor are respectively connected with the other end of the second cooling liquid flow meter, the other end of the second temperature sensor and the other end of the fourth pressure sensor are respectively connected with the air pressurization unit, one end of the other group of the second temperature sensor and one end of the fourth pressure sensor are connected with the radiator, and the other end of the other group of the second temperature sensor and the other end of the fourth pressure sensor are connected with the air temperature control unit.
7. The pem fuel cell component-on-ring test rig of claim 1 wherein: the nitrogen purging system (3) comprises a second filter, a pressure regulating unit, a second electromagnetic valve and a third one-way valve;
one end of the second filter is connected with the nitrogen supply end, the other end of the second filter is connected with one end of the pressure adjusting unit, the other end of the pressure adjusting unit is respectively connected with the air supply system (2) and the hydrogen supply system (4), the second electromagnetic valve and the third one-way valve comprise two groups, one group of the second electromagnetic valve and the third one-way valve are connected between the pressure adjusting unit and the air supply system (2), and the other group of the second electromagnetic valve and the third one-way valve are connected between the pressure adjusting unit and the hydrogen supply system (4).
8. The pem fuel cell component-on-ring test rig of claim 1 wherein: the control system (6) comprises a control unit, a data acquisition unit, a data analysis processing unit and a fault diagnosis and alarm unit, the control unit, the data acquisition unit, the data analysis processing unit and the fault diagnosis and alarm unit are sequentially connected, the control unit is respectively connected with the air supply system (2), the hydrogen supply system (4), the hydrothermal management system (5), the component cooling system (1) and the nitrogen purging system (3), and the fault diagnosis and alarm unit is connected with one end of the electronic load system (7).
9. The pem fuel cell component-on-ring test rig of claim 1 wherein: the electronic load system (7) comprises an electronic load.
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