CN114865011A - Fuel cell air humidifying device, fuel cell testing system and vehicle - Google Patents

Fuel cell air humidifying device, fuel cell testing system and vehicle Download PDF

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Publication number
CN114865011A
CN114865011A CN202110074446.9A CN202110074446A CN114865011A CN 114865011 A CN114865011 A CN 114865011A CN 202110074446 A CN202110074446 A CN 202110074446A CN 114865011 A CN114865011 A CN 114865011A
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fuel cell
air
humidification
tail
gas
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孙贺
王森
向蔚
王永湛
甘全全
戴威
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Shanghai Shenli Technology Co Ltd
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Shanghai Shenli Technology Co Ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
    • B60L50/72—Constructional details of fuel cells specially adapted for electric vehicles
    • 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
    • H01M8/04141—Humidifying by water containing exhaust gases
    • 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
    • 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
    • H01M8/2465—Details of groupings 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

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  • Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fuel Cell (AREA)

Abstract

The invention relates to the technical field of fuel cells, in particular to a fuel cell air humidifying device, a fuel cell engine testing system and a vehicle, wherein the fuel cell comprises an electric pile, the electric pile comprises an air inlet and a tail discharge port, the air humidifying device comprises a membrane humidifier system connected with the air inlet and the tail discharge port of the electric pile, and the membrane humidifier system humidifies and heats gas entering the air inlet of the electric pile through high-temperature and high-humidity gas discharged from the tail of the electric pile; the invention optimizes the problem of large cooling water amount required by cooling and condensing high-temperature and high-humidity gas discharged from the tail at high flow rate, humidifies and heats the inlet air by adopting the high-temperature and high-humidity gas discharged from the tail, saves energy consumption, greatly reduces the requirement of the tail on cooling water, reduces energy consumption and improves energy efficiency.

Description

Fuel cell air humidifying device, fuel cell testing system and vehicle
Technical Field
The invention relates to the technical field of fuel cells, in particular to a fuel cell air humidifying device, a fuel cell testing system and a vehicle.
Background
As a new green power source, a fuel cell engine is becoming one of the important research and development points of vehicle-mounted engines due to its excellent characteristics such as high efficiency and low emission. The fuel cell engine is based on the output of a load, and has good controllability for the whole vehicle; meanwhile, the energy output of the fuel cell engine is electric energy, and the transmission and speed regulation structure of the traditional automobile is simplified. Although fuel cell engines have many advantages over internal combustion engines, fuel cell engines are the mainstream of automotive engines to replace internal combustion engines, and many problems need to be solved. The test of the fuel cell stack, which is a core component of a fuel cell engine, has a large problem, the test of the 150kW high-power fuel cell stack has the air system flow of about 10000SLPM, the test equipment has defects on the overall temperature, humidity, flow and pressure control precision of the air system, and the energy required by the overall humidification and the energy required by the tail exhaust cooling are large. At present, no device capable of controlling the air humidification of the fuel cell with relatively energy saving and high precision exists.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided are a fuel cell air humidifying device, a fuel cell testing system and a vehicle which are energy-saving and highly accurately controlled.
In order to solve the above technical problems, a first technical solution adopted by the present invention is:
the utility model provides a fuel cell air humidifying device, fuel cell includes the pile, the pile includes air inlet and tail gate, air humidifying device is including connecting the membrane humidifier system at pile air inlet and tail gate, the membrane humidifier system is through the high temperature and high humidity gas of pile tail gate to the gas that will enter into in the pile air inlet humidification intensifies.
In order to solve the above technical problem, the second technical solution adopted by the present invention is:
a fuel cell testing system comprises an electric pile, a supporting frame and the fuel cell air humidifying device;
the air humidifying device is arranged on the supporting frame.
In order to solve the above technical problems, the third technical solution adopted by the present invention is:
a vehicle comprises the fuel cell air humidifying device.
The invention has the beneficial effects that: the problem of large cooling water quantity required by cooling and condensing high-temperature and high-humidity gas discharged from the tail at large flow is optimized, the high-temperature and high-humidity gas discharged from the tail is used for humidifying and warming the gas inlet, energy consumption is saved, the requirement of the tail on the cooling water is greatly reduced, the energy consumption is reduced, and the energy efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a fuel cell air humidifier in use, according to an embodiment of the present invention;
description of reference numerals: 1. a gas flow control distribution system; 2. a humidification and preheating system; 3. a membrane humidifier system; 4. a humidification tank system; 5. a humidification path circulation kinetic energy system; 6. a humidification path temperature control system; 7. a temperature raising system before reactor entering; 8. a fuel cell stack; 9. a tail discharge pressure control system; 10. a tail gas cooling system; 11. a water-vapor separation system; 12. an electronic control system.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, the fuel cell includes an electric pile, the electric pile includes an air inlet and a tail outlet, the air humidification apparatus includes a membrane humidifier system connected to the air inlet and the tail outlet of the electric pile, and the membrane humidifier system humidifies and heats the gas entering the air inlet of the electric pile through the high-temperature and high-humidity gas discharged from the tail of the electric pile.
From the above description, through the great problem of the required cooling water yield of tail row high temperature and high humidity gas cooling condensation under large-traffic, carry out the humidification intensification to admitting air through adopting tail row high temperature and high humidity gas, saved the energy resource consumption, the tail row that has significantly reduced simultaneously to the demand of cooling water, reduced the energy resource consumption, promoted energy efficiency.
Furthermore, the device also comprises a gas flow control distribution system and an electric control system, wherein the electric control system controls the gas flow control distribution system;
the gas flow control distribution system comprises an air delivery pipe, a pressure reducing valve, a flow control valve, a mass flow controller and a three-way valve, wherein the pressure reducing valve, the flow control valve, the mass flow controller and the three-way valve are arranged on the air delivery pipe;
the air delivery tube is in communication with the membrane humidifier system.
As can be seen from the above description, the final stacking flow rate can be precisely controlled by the mass flow controller, and at low humidity, dry-wet flow rate distribution is performed by the three-way valve, wherein the air distributed to the wet gas path is humidified and then mixed with dry air to obtain low humidity gas, which is generally used at a gas temperature of 50 ℃ and a humidity of 10% RH or less; the electric control system is used for providing electric energy for the operation of the device and carrying out master control on all the systems.
Further, a humidification preheating system is arranged on an air conveying pipe between the gas flow control distribution system and the membrane humidifier system, the humidification preheating system comprises a first power regulator and a first heater arranged on the air conveying pipe, the first power regulator controls the first heater, and the electric control system controls the first power regulator.
As can be seen from the above description, the output power of the gas heater can be precisely controlled by the first power regulator to achieve the desired pre-heating temperature of the gas.
Furthermore, a humidification tank system is further arranged between the membrane humidifier system and the air inlet of the galvanic pile, and the humidification tank system comprises a humidification tank.
As can be seen from the above description, the humidity of the gas passing through the humidification tank through the membrane humidifier system reaches 100% RH by the arrangement of the humidification tank.
Furthermore, the humidifying tank system also comprises a humidifying path circulating kinetic energy system, and the humidifying path circulating kinetic energy system comprises a circulating water pipeline and a variable frequency water pump arranged on the circulating water pipeline;
the circulating water pipeline is connected to the humidifying tank;
the electric control system controls the variable-frequency water pump.
Furthermore, a humidifying path temperature control system is arranged on the circulating water pipeline, and comprises a plate heat exchanger and a plate heat exchanger cold side outlet proportional valve;
and the electric control system controls the proportional valve at the outlet of the cold side of the plate heat exchanger.
From the above description, it can be known that the precise dew point temperature control can be realized through the humidification path temperature control system, so as to realize the precise humidity control.
Further, a temperature rising system before reactor entering is arranged between the humidifying tank and the air inlet of the galvanic pile, and the temperature rising system before reactor entering comprises a second heater and a second power regulator;
the second power regulator controls the second heater, and the electric control system controls the second power regulator;
and the gas flow control distribution system is communicated with the gas inlet of the galvanic pile through a temperature rising system before the galvanic pile enters.
From the above description, it can be known that the temperature rise control can be performed on the humidified gas or the gas directly distributed by the gas flow control distribution system through the second power regulator, the accurate control of the gas humidity is realized through the temperature rise, and the accurate control of the gas inlet temperature is realized by raising the gas temperature and reducing the gas humidity under the condition that the water content is not changed, so as to achieve the required humidity.
Further, the membrane humidifier system comprises a membrane humidifier comprising a dry side and a wet side, the dry side in communication with the stack gas inlet;
the wet side comprises a wet side inlet and a wet side outlet, the wet side inlet is communicated with the tail discharge port, and the wet side outlet is sequentially provided with a tail discharge pressure control system, a tail discharge cooling system and a water-vapor separation system;
the electric control system controls the tail exhaust pressure control system, the tail exhaust cooling system and the water-vapor separation system.
From the above description, the pressure of the whole body is controlled by the tail exhaust pressure control system, so that the stack inlet pressure reaches the required pressure.
The tail exhaust pressure control system comprises an air conveying pipe, a proportional valve arranged on the air conveying pipe, and pressure sensors at the front end and the rear end of the proportional valve.
The tail row cooling system comprises a plate heat exchanger and a ball valve connected with the plate heat exchanger, the ball valve and a temperature sensor on the cold side of the plate heat exchanger, and the temperature sensor on the outlet of the hot side of the plate heat exchanger; the tail exhaust gas which is partially cooled through the membrane humidifier is cooled in the heat exchanger, so that the temperature is reduced to be close to the room temperature, and a large amount of condensed water can not appear when the tail gas is discharged to a pipeline in a laboratory.
The water-vapor separation system comprises a water-vapor separation tank, an electromagnetic valve, a ball valve and a liquid level sensor, wherein water is accumulated ceaselessly, and meanwhile, the water can be detected through the high liquid level sensor to automatically drain.
Still be equipped with corresponding conventional pipe fittings such as filter, check valve, air-vent valve, flow sensor, pressure sensor, temperature sensor, ion concentration sensor in each pipeline of each system of this application.
A fuel cell testing system comprises an electric pile, a supporting frame and the air humidifying device;
the air humidifying device is arranged on the supporting frame.
A vehicle comprises the fuel cell air humidifying device.
Example one
The utility model provides a fuel cell air humidifying device, fuel cell includes the pile 8, pile 8 includes air inlet and tail gate, air humidifying device is including connecting membrane humidifier system 3 at pile 8 air inlet and tail gate, membrane humidifier system 3 is through the high temperature and high humidity gas of pile 8 tail gate to carrying out the humidification intensification to the gas that will enter into pile 8 air inlet.
The device also comprises a gas flow control distribution system 1 and an electric control system 12, wherein the electric control system 12 controls the gas flow control distribution system 1;
the gas flow control distribution system 1 comprises an air delivery pipe, a pressure reducing valve, a flow control valve, a mass flow controller and a three-way valve, wherein the pressure reducing valve, the flow control valve, the mass flow controller and the three-way valve are arranged on the air delivery pipe;
the air delivery tube communicates with the membrane humidifier system 3.
A humidification preheating system 2 is arranged on an air conveying pipe between the gas flow control distribution system 1 and the membrane humidifier system 3, the humidification preheating system 2 comprises a first power regulator and a first heater arranged on the air conveying pipe, the first power regulator controls the first heater, and the electric control system 12 controls the first power regulator.
Further, a humidification tank system 4 is further arranged between the membrane humidifier system 3 and the air inlet of the galvanic pile 8, and the humidification tank system 4 comprises a humidification tank.
Further, the humidification tank system 4 further comprises a humidification path circulating kinetic energy system 5, and the humidification path circulating kinetic energy system 5 comprises a circulating water pipeline and a variable frequency water pump arranged on the circulating water pipeline;
the circulating water pipeline is connected to the humidifying tank;
the electric control system 12 controls the variable frequency water pump.
Further, a humidifying path temperature control system 6 is arranged on the circulating water pipeline, and the humidifying path temperature control system 6 comprises a plate heat exchanger and a plate heat exchanger cold side outlet proportional valve;
the electric control system 12 controls the plate heat exchanger cold side outlet proportional valve.
Further, a temperature rising system 7 before reactor entering is arranged between the humidifying tank and the air inlet of the electric reactor 8, and the temperature rising system 7 before reactor entering comprises a second heater and a second power regulator;
the second power regulator controls the second heater, and the electronic control system 12 controls the second power regulator;
the gas flow control distribution system 1 is communicated with a gas inlet of a galvanic pile 8 through a pre-pile heating system 7.
Further, the membrane humidifier system 3 comprises a membrane humidifier comprising a dry side and a wet side, the dry side being in communication with the stack inlet;
the wet side comprises a wet side inlet and a wet side outlet, the wet side inlet is communicated with the tail discharge port, and the wet side outlet is sequentially provided with a tail discharge pressure control system 9, a tail discharge cooling system 10 and a water-vapor separation system 11;
the electric control system 12 controls the tail exhaust pressure control system 9, the tail exhaust cooling system 10 and the water-vapor separation system 11.
Example two
A fuel cell stack air humidifying device comprises a supporting frame and a humidifying device arranged on the supporting frame, wherein the humidifying device comprises a gas flow control distribution system 1, a humidifying preheating system 2, a membrane humidifier system 3, a humidifying tank system 4, a humidifying path circulating kinetic energy system 5, a humidifying path temperature control system 6, a temperature rise system 7 before stacking, a tail discharge pressure control system 9, a tail discharge temperature reduction system 10, a water-vapor separation system 11 and an electric control system 12.
The gas flow control distribution system 1 distributes the proportion of dry air and wet air, the wet air is partially heated in advance through the humidification preheating system 2, high-temperature high-humidity gas is discharged through the tail in the membrane humidifier system 3 for first humidification, the final humidification is carried out in the humidification tank system 4 to reach 100% RH humidity, the gas is further heated in the heating system 7 before stacking, the gas temperature is increased and the humidity is reduced under the condition that the water content is not changed, the required humidity is reached, after entering the electric stack 8, the high-temperature high-humidity gas is subjected to first-stage cooling and humidity reduction through the membrane humidifier system, the temperature is reduced and condensed through the tail discharge cooling system 10, tail discharge water is collected through the water-vapor separation system 11, the tail discharge water can be automatically discharged through the control of an electromagnetic valve and a liquid level sensor, the pressure of the whole system is controlled through the tail discharge pressure control system 9, and the pressure of the stack reaches the required pressure, the electric control system 12 is used for providing electric energy for the operation of the device and performing master control on all the systems.
Further, the gas flow control distribution system 1 includes a mass flow controller and a three-way valve for distributing dry and wet flows, the mass flow controller can accurately control the final stacking flow, and the three-way valve distributes the dry and wet flows at low humidity, wherein the air distributed to the wet gas path is mixed with the dry air after being humidified, so as to obtain the low humidity gas, which is usually used when the gas temperature is 50 ℃ and the humidity is below 10% RH.
Further, the humidification and preheating system 2 comprises PID control, and the output power of the gas heater can be precisely controlled by the electric power regulator, so that the gas reaches the desired preheating temperature.
Furthermore, the membrane humidification system can pre-humidify the gas to be humidified through the tail exhaust high-temperature high-humidity gas, and can reduce the energy consumption of humidification in the humidification tank and the energy consumption of temperature reduction and condensation of the tail exhaust high-temperature high-humidity gas after partial energy transfer.
As preferred technical scheme, the humidification jar be equipped with level sensor, moisturizing solenoid valve and drainage solenoid valve, after long-time continuous operation, gaseous big water of taking away can carry out the moisturizing to the humidification jar through the level gauge detection, the gas through the humidification jar is 100% RH humidity.
Furthermore, the humidification path temperature control system 6 is composed of a plate heat exchanger, a heater and related sensors, heating power of the heater is controlled through a PID algorithm when temperature rising or stability maintaining is carried out, temperature compensation is controlled through the plate heat exchanger and a proportional valve, and accurate water temperature control is achieved.
Furthermore, the accurate dew point temperature control can be realized through the humidifying path temperature control system 6, so that the accurate humidity control is realized.
Further, the pre-stack heating system 7 comprises a heater and a heating belt, the temperature of the humidified gas can be controlled by a PID algorithm, the humidity of the gas can be accurately controlled by heating, and the temperature of the gas inlet can be accurately controlled.
Further, tail gas cooling system 10 includes plate heat exchanger and the ball valve that links to each other, and the tail gas exhaust who has carried out partial cooling through the membrane humidifier cools down in the heat exchanger, makes the temperature drop to being close to the room temperature, and when tail gas emission arrived the pipeline in the laboratory like this, a large amount of comdenstion water can not appear.
Further, tail water drainage steam separation system 11 includes steam knockout drum, solenoid valve, ball valve and level sensor, and when the incessant accumulation of water, accessible high level sensor detects, carries out automatic drainage.
As a preferable technical scheme, each pipeline is also provided with corresponding conventional pipe fittings such as a filter, a one-way valve, a pressure regulating valve, a flow sensor, a pressure sensor, a temperature sensor, an ion concentration sensor and the like.
The air temperature at the rear end of the gas flow control distribution system 1 is room temperature, the test of a 150kW high-power fuel cell stack 8 is assumed to be 20 ℃, the flow of the air system is about 10000SLPM, and the back pressure is 100 kPa.
In a humidification tank system, the system is considered to be an adiabatic system, and the input heat is dry air Q air,in And water supplement Q l,in Electric heating power W heat Efficiency is considered. Output heat of Q out Saturated humid air, the examination condition is calculated according to a heat balance formula:
Q in ＝Q out
Q in ＝Q g，in +Q lin +ηW heat
Q out ＝Q g，out +Q l，out
Figure BDA0002907009960000081
W heat : heat exchange capacity (kW); eta: heater efficiency; w is a g : gas mass flow (kg/s); w is a l : the mass flow (kg/s) of liquid water carried away by gas humidification; c. C p : specific heat at constant gas pressure (kJ/kg. DEG C); delta T g : gas temperature rise (. degree. C.); h is v : vapor enthalpy (kJ/kg) at dew point temperature; h is l : liquid water enthalpy (kJ/kg) at normal temperature;
Figure BDA0002907009960000082
the concept of moisture content is incorporated herein. The moisture content is the ratio of the mass of water vapor in the air to the mass of the absolutely dry air, namely:
ω l ＝ω g H
it can be calculated that when the stack pressure is 100kPa, the required heat quantity provided by the humidifying circuit temperature control system is 218kW if a film-free humidifier system is adopted, the 10000SLPM air is humidified and heated to 90 ℃, and the 100% RH wet gas is heated.
Furthermore, in the membrane humidifier system, 10000SLPM wet air at 90 ℃ on a wet side can raise dry gas at 20 ℃ on a dry side and 10000SLPM dry gas to 65 ℃ and 60% RH humidity through a type-selecting membrane humidifier.
Meanwhile, the calculation result shows that when the temperature of air is increased to 90 ℃ by humidifying air at 40 ℃, 10000SLPM and 60% RH and the temperature of the air is increased to 100 ℃, the heat required by a humidifying path temperature control system is 177.8kW when the stacking pressure is 100 kPa.
It can be obtained that the energy of the humidifying temperature control circuit is saved by 40.2kW through the membrane humidifier system, and similarly, the energy is saved by 40.2kW in the tail discharge cooling system of the tail discharge part.
EXAMPLE III
A vehicle comprising the fuel cell air humidification apparatus of the first embodiment.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims (10)

1. The utility model provides a fuel cell air humidifying device, fuel cell includes the pile, the pile includes air inlet and tail mouth, its characterized in that, air humidifying device is including connecting the membrane humidifier system at pile air inlet and tail mouth, the high temperature and high humidity gas that membrane humidifier system was arranged through the pile tail is to entering into the interior gas of pile air inlet and is moisturized the intensification.
2. The fuel cell air humidification apparatus of claim 1, further comprising a gas flow control distribution system and an electronic control system, the electronic control system controlling the gas flow control distribution system;
the gas flow control distribution system comprises an air delivery pipe, a pressure reducing valve, a flow control valve, a mass flow controller and a three-way valve, wherein the pressure reducing valve, the flow control valve, the mass flow controller and the three-way valve are arranged on the air delivery pipe;
the air delivery tube is in communication with the membrane humidifier system.
3. The fuel cell air humidification device of claim 2, wherein a humidification pre-heating system is disposed on the air delivery pipe between the gas flow control distribution system and the membrane humidifier system, the humidification pre-heating system including a first power regulator and a first heater disposed on the air delivery pipe, the first power regulator controlling the first heater, the electronic control system controlling the first power regulator.
4. The fuel cell air humidification device of claim 2, wherein a humidification tank system is further disposed between the membrane humidifier system and the stack air inlet, the humidification tank system comprising a humidification tank.
5. The fuel cell air humidifier of claim 4, wherein the humidification tank system further comprises a humidification circuit circulation kinetic energy system, the humidification circuit circulation kinetic energy system comprising a circulation water pipeline and a variable frequency water pump disposed on the circulation water pipeline;
the circulating water pipeline is connected to the humidifying tank;
the electric control system controls the variable-frequency water pump.
6. The fuel cell air humidification device of claim 5, wherein a humidification path temperature control system is arranged on the circulating water pipeline, and comprises a plate heat exchanger and a plate heat exchanger cold side outlet proportional valve;
and the electric control system controls the proportional valve at the outlet of the cold side of the plate heat exchanger.
7. The fuel cell air humidification device of claim 4, wherein a pre-stack temperature raising system is further disposed between the humidification tank and the stack air inlet, and the pre-stack temperature raising system comprises a second heater and a second power regulator;
the second power regulator controls the second heater, and the electric control system controls the second power regulator;
and the gas flow control distribution system is communicated with a gas inlet of the galvanic pile through a temperature rising system before the galvanic pile enters.
8. The fuel cell air humidification apparatus of claim 1, wherein the membrane humidifier system comprises a membrane humidifier comprising a dry side and a wet side, the dry side in communication with a stack air inlet;
the wet side comprises a wet side inlet and a wet side outlet, the wet side inlet is communicated with the tail discharge port, and the wet side outlet is sequentially provided with a tail discharge pressure control system, a tail discharge cooling system and a water-vapor separation system;
the electric control system controls the tail exhaust pressure control system, the tail exhaust cooling system and the water-vapor separation system.
9. A fuel cell testing system comprising a stack, a support frame and a fuel cell air humidification apparatus as claimed in any one of claims 1 to 8;
the air humidifying device is arranged on the supporting frame.
10. A vehicle comprising the fuel cell air humidification apparatus of any one of claims 1 to 8.
CN202110074446.9A 2021-01-20 2021-01-20 Fuel cell air humidifying device, fuel cell testing system and vehicle Pending CN114865011A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117954652A (en) * 2023-12-21 2024-04-30 青岛理工大学 Humidification system for fuel cell test board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117954652A (en) * 2023-12-21 2024-04-30 青岛理工大学 Humidification system for fuel cell test board

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