CN116779916A - Hydrogen fuel power generation device and control method - Google Patents

Hydrogen fuel power generation device and control method Download PDF

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Publication number
CN116779916A
CN116779916A CN202210231058.1A CN202210231058A CN116779916A CN 116779916 A CN116779916 A CN 116779916A CN 202210231058 A CN202210231058 A CN 202210231058A CN 116779916 A CN116779916 A CN 116779916A
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CN
China
Prior art keywords
module
air
hydrogen
chamber
transmission module
Prior art date
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Pending
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CN202210231058.1A
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Chinese (zh)
Inventor
黄颖
孙李刚
张志鹏
李碧
梁俊杰
姜宝花
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Guangdong Lanxuan Hydrogen Energy Technology Co ltd
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Guangdong Lanxuan Hydrogen Energy Technology Co ltd
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Application filed by Guangdong Lanxuan Hydrogen Energy Technology Co ltd filed Critical Guangdong Lanxuan Hydrogen Energy Technology Co ltd
Priority to CN202210231058.1A priority Critical patent/CN116779916A/en
Publication of CN116779916A publication Critical patent/CN116779916A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H01M8/04783—Pressure differences, e.g. between anode and cathode
    • 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
    • H01M8/045—Humidity; Ambient humidity; Water content of anode reactants at the inlet or inside the fuel cell
    • 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

Abstract

The invention discloses a hydrogen fuel power generation device and a control method, wherein the hydrogen fuel power generation device comprises a galvanic pile module, a first transmission module, a second transmission module, a humidity detection module and a control module, wherein a membrane electrode assembly is arranged in a containing cavity of the galvanic pile module to be separated into a first cavity and a second cavity, the galvanic pile module is provided with a first air inlet communicated with the first cavity and a second air inlet communicated with the second cavity, the first transmission module is in butt joint with the first air inlet, the second transmission module is in butt joint with the second air inlet, the humidity detection module is used for detecting a humidity detection value in the first cavity, the control module is electrically connected with the humidity detection module, and the control module is electrically connected with at least one of the first transmission module and the second transmission module to control the air pressure difference at two sides of the membrane electrode assembly by controlling at least one of the first transmission module and the second transmission module, so that the humidity detection value is in a humidity preset range.

Description

Hydrogen fuel power generation device and control method
Technical Field
The invention relates to the technical field of new energy, in particular to a hydrogen fuel power generation device and a control method.
Background
Along with the rapid development and the great increase of demands of hydrogen fuel cell technology, the application field of the hydrogen fuel cell is continuously expanded, and the hydrogen fuel cell is mainly applied to application scenes such as vehicle power and the like at present and is basically powered by high power, so that the structure is complex, and the manufacturing cost is high.
Specifically, the hydrogen fuel cell generally includes a stack module, in which a membrane electrode assembly is disposed to divide a housing of the stack module into a first chamber and a second chamber, a catalytic material is disposed in the first chamber, hydrogen gas is required to be supplied to the first chamber and oxygen gas or air is required to be supplied to the second chamber when the reaction is performed, the hydrogen gas is catalyzed by the catalytic material to generate hydrogen ions and passes through the membrane electrode assembly, chemical reaction occurs on a catalyst surface in the second chamber with the oxygen gas, and electrical energy is output to an external circuit, however, a precondition that the proton exchange membrane is required to be in a relatively humid environment for transporting the hydrogen ions.
Therefore, in the prior art, a high-power hydrogen fuel cell needs to be equipped with a humidifier, a water vapor separator and other devices, hydrogen enters the first chamber after being humidified by the humidifier, continuously humidifies and reacts with the membrane electrode assembly, meanwhile, redundant hydrogen leaves the first chamber, and the hydrogen leaving the first chamber needs to be dried by the water vapor separator, so that the hydrogen is in a relatively dry state (at least can not form water drops), therefore, the volume and the weight of the hydrogen fuel cell are relatively large, and the hydrogen fuel cell is not suitable for a low-power scene.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the hydrogen fuel power generation device and the control method, which optimize the structure, reduce the production cost, reduce the volume, lighten the weight and improve the compatibility.
According to an embodiment of the first aspect of the present invention, a hydrogen fuel power plant includes: the electric pile module is internally provided with a containing cavity, the electric pile module is provided with a membrane electrode assembly in the containing cavity, the membrane electrode assembly divides the containing cavity into a first cavity and a second cavity, and the electric pile module is provided with a first air inlet communicated with the first cavity and a second air inlet communicated with the second cavity; the first transmission module is in butt joint with the first air inlet and is used for inputting hydrogen into the first chamber; the second transmission module is in butt joint with the second air inlet and is used for inputting oxygen or air into the second chamber; the humidity detection module is used for detecting a humidity detection value in the first cavity; the control module is electrically connected with the humidity detection module, and is electrically connected with at least one of the first transmission module and the second transmission module so as to control the air pressure difference at two sides of the membrane electrode assembly by controlling at least one of the first transmission module and the second transmission module to operate, so that the humidity detection value is in a humidity preset range.
The hydrogen fuel power generation device provided by the embodiment of the invention has at least the following beneficial effects:
according to the hydrogen fuel power generation device, based on the reaction characteristics of the electric pile module of the hydrogen fuel power generation device, the air pressure of the hydrogen side needs to be higher than the air pressure of the oxygen side in the two sides of the membrane electrode assembly, hydrogen ions can penetrate through the membrane electrode assembly to enter the oxygen side to react with oxygen, so that the electric pile module generates power, and because the hydrogen ions react with oxygen to generate water, the air pressure of the hydrogen side is far higher than the air pressure of the oxygen side in the past, the water is directly taken away by oxygen or air of the oxygen side.
According to some embodiments of the invention, the electric pile module is further provided with a first air outlet communicated with the first chamber, the electric pile module is provided with a first catalytic component in the first chamber, the first catalytic component is located between the first air inlet and the first air outlet, the first transmission module comprises a first air supply pipe group and a recovery pipe group, one end of the first air supply pipe group is used for being connected with an air supply source, one end of the recovery pipe group is in butt joint communication with the first air outlet, and the other end of the recovery pipe group is respectively in butt joint communication with the other end of the first air supply pipe group and the first air inlet.
According to some embodiments of the invention, the first air supply pipe group comprises a first constant pressure valve, one end of the first constant pressure valve is connected with an air supply source through a pipeline, the other end of the first constant pressure valve is respectively in butt joint communication with the other end of the first air supply pipe group and the first air inlet through a pipeline, and the control module is connected with the first constant pressure valve.
According to some embodiments of the invention, the recovery pipe group comprises a one-way valve, a booster pump and a proportional valve, wherein the one-way valve, the booster pump and the proportional valve are connected through pipelines to form at least part of a recovery pipeline, one end of the recovery pipeline is in butt joint communication with the first air outlet, and the other end of the recovery pipeline is in butt joint communication with the other end of the first air supply pipe group and the first air inlet respectively.
According to some embodiments of the invention, the pile module is further provided with a second air outlet communicated with the second chamber, the pile module is provided with a second catalytic assembly in the second chamber, the second catalytic assembly is located between the second air inlet and the second air outlet, the second transmission module comprises a second air supply pipe group and an air exhaust pipe group, the second air supply pipe group is communicated with the second air inlet in a butt joint mode, and the air exhaust pipe group is communicated with the second air outlet in a butt joint mode.
According to some embodiments of the invention, the second air supply pipeline comprises a blower and a second constant pressure valve, one end of the second constant pressure valve is connected with the blower through a pipeline, the other end of the second constant pressure valve is in butt joint communication with the second air inlet through a pipeline, the air exhaust pipe group comprises a third constant pressure valve, one end of the third constant pressure valve is in butt joint communication with the second air outlet through a pipeline, and the control module is respectively connected with the second constant pressure valve and the third constant pressure valve.
According to some embodiments of the invention, the galvanic pile module is provided with a temperature detection module in the first chamber, and the temperature detection module is connected with the control module.
According to some embodiments of the present invention, the power supply system further comprises a charge and discharge module, an energy storage module and an inversion module, wherein the charge and discharge module is respectively connected with the pile module, the energy storage module and the inversion module, and the control module is connected with the charge and discharge module.
According to a second aspect of the present invention, there is provided a control method applied to the hydrogen fuel power generation device disclosed in any one of the above embodiments, the control method including: controlling at least one of the first transmission module and the second transmission module to operate so that the air pressure of the first chamber is higher than the air pressure of the second chamber; acquiring the humidity detection value; when the humidity detection value is higher than a humidity preset range, controlling at least one of the first transmission module and the second transmission module to operate so as to increase the air pressure difference between the first chamber and the second chamber; and when the humidity detection value is lower than the humidity preset range, controlling at least one of the first transmission module and the second transmission module to operate so as to reduce the air pressure difference between the first chamber and the second chamber.
The control method according to the embodiment of the invention has at least the following beneficial effects:
according to the control method, the air pressure difference at two sides of the membrane electrode assembly is regulated by controlling at least one of the first transmission module and the second transmission module, the air pressure value at two sides of the membrane electrode assembly is reduced on the basis that the low flow rate of hydrogen and oxygen is met, and the air pressure at the hydrogen side is slightly higher than the air pressure at the oxygen side, so that water can partially permeate to the hydrogen side at the oxygen side of the membrane electrode assembly, when the hydrogen flows through the membrane electrode assembly, the hydrogen combines with permeated water to enable the humidity to reach the reaction condition, in addition, the humidity of the first chamber is detected by the humidity detection module, when the humidity is too high, the air pressure difference at two sides of the membrane electrode assembly is increased, the hydrogen is prevented from being too high, and meanwhile, the hydrogen fuel power generation device can be regulated when the humidity is too low, so that the hydrogen fuel power generation device can stably operate.
According to some embodiments of the present invention, the hydrogen fuel power generation device further includes a charge-discharge module, an energy storage module, and an inversion module, where the charge-discharge module is connected to the pile module, the energy storage module, and the inversion module, and the control module is connected to the charge-discharge module; the control method further includes: acquiring the output voltage of the pile module, the energy storage voltage of the energy storage module and the load output voltage of the inversion module; in a starting stage, the energy storage module outputs power for the first transmission module, the second transmission module and the control module to start the galvanic pile module, and the inversion module is controlled not to output until the fuel output voltage reaches the load output voltage, the energy storage module output is reduced, and the inversion module output is controlled; controlling the stack module output to supply the output of the inverter module and controlling the stack module output to charge the energy storage module during a low power phase or when the fuel output voltage is higher than the load output voltage and the fuel output voltage is higher than the energy storage voltage; and in a high power stage or when the fuel output voltage is lower than the load output voltage, controlling the output of the electric pile module and the discharge of the energy storage module to supply the output of the inversion module.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a hydrogen-fueled power generating apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of one embodiment of a hydrogen-fueled power generating apparatus according to the present invention;
FIG. 3 is a flow chart of one embodiment of the control method of the present invention.
Reference numerals:
the stack module 100, the membrane electrode assembly 110, the first chamber 120, the first air inlet 121, the first air outlet 122, the first catalytic assembly 123, the second chamber 130, the second air inlet 131, the second air outlet 132, the second catalytic assembly 133, the first transfer module 200, the first air supply stack 210, the first constant pressure valve 211, the recovery stack 220, the check valve 221, the booster pump 222, the proportional valve 223, the second transfer module 300, the second air supply stack 310, the blower 311, the second constant pressure valve 312, the air exhaust stack 320, the third constant pressure valve 321, the control module 400, the humidity detection module 500, the temperature detection module 600, the charge and discharge module 700, the energy storage module 800, and the inverter module 900.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 and 2, a hydrogen fuel power generation device according to an embodiment of the first aspect of the present invention includes a stack module 100, a first transmission module 200, a second transmission module 300, a humidity detection module 500, and a control module 400, wherein a cavity is provided in the stack module 100, the stack module 100 is provided with a membrane electrode assembly 110 in the cavity, the membrane electrode assembly 110 divides the cavity into a first chamber 120 and a second chamber 130, the stack module 100 is provided with a first air inlet 121 in communication with the first chamber 120 and a second air inlet 131 in communication with the second chamber 130, the first transmission module 200 interfaces with the first air inlet 121 for inputting hydrogen into the first chamber 120, the second transmission module 300 interfaces with the second air inlet 131 for inputting oxygen or air into the second chamber 130, the humidity detection module 500 is used for detecting a humidity detection value in the first chamber 120, the control module 400 is electrically connected with the humidity detection module 500, at least one of the first transmission module 200 and the second transmission module 300 is electrically connected to control the humidity detection module 300 so that the humidity values of the two membrane electrode assemblies are in a preset humidity range by controlling at least one of the first transmission module 200 and the second transmission module 300.
It should be noted that, the general electric pile module 100 is further provided with a first air outlet 122 communicated with the first chamber 120, the electric pile module 100 is provided with a first catalytic assembly 123 in the first chamber 120, the first catalytic assembly 123 is located between the first air inlet 121 and the first air outlet 122, the electric pile module 100 is further provided with a second air outlet 132 communicated with the second chamber 130, the electric pile module 100 is provided with a second catalytic assembly 133 in the second chamber 130, the second catalytic assembly 133 is located between the second air inlet 131 and the second air outlet 132, specifically, the first catalytic assembly 123 and the second catalytic assembly 133 can be selected in conventional materials according to actual requirements, the first catalytic assembly 123 is used for catalyzing hydrogen, and the second catalytic assembly 133 is used for catalyzing oxygen.
On both sides of the membrane electrode assembly 110, the pressure difference between the hydrogen side of the first chamber 120 and the oxygen side of the second chamber 130 may be controlled to be 0.01-0.05 Mpa, and specifically, the pressure difference may be adjusted according to the start-up phase, the low power phase or the high power phase of the hydrogen fuel power generation device, for example, the pressure difference may be adjusted to be 0.01Mpa during the start-up phase; in the high power (full load) stage, regulating the air pressure difference to be 0.05Mpa; in the low power stage or the non-full load stage, the air pressure difference is regulated to be between 0.01 and 0.05 Mpa.
The humidity preset range can be set according to the specific membrane electrode assembly 110 selected, so as to adjust the permeation amount of the water in the membrane electrode assembly 110.
The control module 400 may be formed by a processing chip such as a CPU or an MCU and an accessory circuit.
The hydrogen fuel power generation device of the present invention, based on the reaction characteristics of the stack module 100 of the hydrogen fuel power generation device, the gas pressure of the hydrogen side needs to be higher than the gas pressure of the oxygen side in both sides of the membrane electrode assembly 110, hydrogen ions can pass through the membrane electrode assembly 110 to enter the oxygen side to react with oxygen, so that the stack module 100 generates power, and since the reaction of hydrogen ions and oxygen generates water, both side gases will need to be added into the respective cavities, the redundant water is brought out of the respective cavities by the higher gas flows of both sides, and the design control module 400 adjusts the gas pressure difference of both sides of the membrane electrode assembly 110 by controlling at least one of the first transmission module 200 and the second transmission module 300, reduces the gas pressure difference of both sides of the membrane electrode assembly 110 on the basis that the gas pressure of the hydrogen side is higher than the gas pressure of the oxygen side, so that water can permeate to the hydrogen side in a small amount on the oxygen side of the membrane electrode assembly 110, when hydrogen flows through one side of the membrane electrode assembly 110, the degree of proper wetting is reached, the generated protons smoothly pass through the membrane electrode assembly 110, in addition, the humidity of the first chamber 120 is detected through the humidity detection module 500, when the humidity is too high, the air pressure difference on the two sides of the membrane electrode assembly 110 is improved, the too high humidity of the hydrogen is prevented, and it is required that the water only permeates to the hydrogen side in a small amount from the oxygen side of the membrane electrode assembly 110, plays a role of wetting the surface of the membrane electrode assembly, so that the hydrogen discharged from the second air outlet 132 can not carry a large amount of water and can be regulated when the humidity is too low, so that the hydrogen fuel generating device stably operates.
In some embodiments of the present invention, as shown in fig. 1, the first transfer module 200 includes a first air supply pipe group 210 and a recovery pipe group 220, one end of the first air supply pipe group 210 is used to connect with an air supply source, one end of the recovery pipe group 220 is in butt communication with the first air outlet 122, and the other end of the recovery pipe group 220 is respectively in butt communication with the other end of the first air supply pipe group 210 and the first air inlet 121.
The gas supply source may supply hydrogen to the first chamber 120 through the first gas supply pipe set 210, since the first chamber 120 has a barrier of the first catalytic assembly 123, the hydrogen enters the first chamber 120 from the first gas inlet 121, the hydrogen passes through the first catalytic assembly 123, and is catalyzed by the first catalytic assembly 123, hydrogen ions pass through the membrane electrode assembly 110 to react with oxygen, at this time, the hydrogen consumption adds to the gas barrier of the first chamber 120, and thus, the gas pressure of the first gas outlet 122 may be lower than the gas pressure of the first gas inlet 121, and during the reaction, the hydrogen of the first chamber 120 is required to be in a flowing state, and thus, the first gas outlet 122 needs to discharge the hydrogen, and in order to save resources, the recovery pipe set 220 can recycle the hydrogen, and circulate the discharged hydrogen to the first gas inlet 121.
In some embodiments of the present invention, the first air supply pipe group 210 includes a first constant pressure valve 211, one end of the first constant pressure valve 211 is connected to an air supply source through a pipe, the other end of the first constant pressure valve 211 is respectively in butt communication with the other end of the first air supply pipe group 210 and the first air inlet 121 through a pipe, and the control module 400 is connected to the first constant pressure valve 211.
The air supply source supplies air to the first chamber 120 through the first constant pressure valve 211, where a first air pressure threshold value of the first chamber 120 may be set through the first constant pressure valve 211, when the air pressure of the first chamber 120 is higher than the first air pressure threshold value, the air supply flow of the first constant pressure valve 211 is correspondingly reduced, and when the air pressure of the first chamber 120 is lower than the first air pressure threshold value, the air supply flow of the first constant pressure valve 211 is correspondingly increased, so as to effectively stabilize the air pressure of the first chamber 120, so that the control module 400 is convenient to adjust the air pressure difference at both sides of the membrane electrode assembly 110, and in particular, the first constant pressure valve 211 may be a balance valve.
In some embodiments of the present invention, as shown in fig. 1, the recovery tube group 220 includes a check valve 221, a booster pump 222, and a proportional valve 223, and the check valve 221, the booster pump 222, and the proportional valve 223 are connected by pipes to constitute at least part of a recovery pipe, one end of which is in butt communication with the first air outlet 122, and the other end of which is in butt communication with the other end of the first air supply tube group 210 and the first air inlet 121, respectively.
Since the air pressure of the first air inlet 121 is higher than the air pressure of the first air outlet 122, the check valve 221 is provided to prevent the reverse flow of the hydrogen gas to affect the flow direction of the hydrogen gas in the first chamber 120, and the booster pump 222 may apply pressure so that the hydrogen gas at the low pressure side at the first air outlet 122 may flow to the first air inlet 121.
Since the output power of the hydrogen fuel generating device is different, the consumption of hydrogen is correspondingly changed, the booster pump 222 can keep the operation power unchanged, and the control module 400 controls the proportional valve 223 to adjust the size of the passage, so as to adjust the reflux amount of hydrogen, for example, when the hydrogen consumption is larger in the reaction process, the conduction rate of the passage can be reduced through the proportional valve 223, so that the air pressure of the first chamber 120 can be kept stable.
In some embodiments of the present invention, as shown in fig. 1, the second transfer module 300 includes a second air supply stack 310 and an air exhaust stack 320, the second air supply stack 310 being in abutting communication with the second air inlet 131 and the air exhaust stack 320 being in abutting communication with the second air outlet 132.
The second air supply pipe set 310 may be communicated with an external environment to provide air for the second chamber 130, and the air exhaust pipe set 320 is also communicated with the external environment to keep the air continuously flowing in the second chamber 130, so that moisture and heat generated by the reaction can be carried along and discharged, and timely heat dissipation is performed for the hydrogen fuel power generation device, so that the power generation process is stably performed.
In some embodiments of the present invention, as shown in fig. 1, the second air supply duct includes a blower 311 and a second constant pressure valve 312, one end of the second constant pressure valve 312 is connected to the blower 311 through a duct, the other end of the second constant pressure valve 312 is in butt-joint communication with the second air inlet 131 through a duct, the air exhaust stack 320 includes a third constant pressure valve 321, one end of the third constant pressure valve 321 is in butt-joint communication with the second air outlet 132 through a duct, and the control module 400 is connected to the second constant pressure valve 312 and the third constant pressure valve 321, respectively.
The blower 311 may be provided with a filter screen or a filter material, so as to remove dust, harmful gas and oil.
The control module 400 may set the second air valve threshold for the second constant pressure valve 312 and the third constant pressure valve 321, when the air pressure of the second chamber 130 is higher than the second air pressure threshold, the air supply flow of the second constant pressure valve 312 is correspondingly decreased or the air exhaust flow of the third constant pressure valve 321 is correspondingly increased, and when the air pressure of the second chamber 130 is lower than the second air pressure threshold, the air supply flow of the second constant pressure valve 312 is correspondingly increased or the air exhaust flow of the third constant pressure valve 321 is correspondingly decreased, thereby effectively stabilizing the air pressure of the second chamber 130.
In some embodiments of the present invention, the stack module 100 is provided with a temperature detection module 600 within the first chamber 120, and the temperature detection module 600 is connected with the control module 400.
Here, a temperature threshold may be set, and when the temperature detection module 600 detects that the temperature of the first chamber 120 is too high, the control module 400 may correspondingly control the blower 311, the first constant pressure valve 211, the second constant pressure valve 312, and the third constant pressure valve 321, so as to accelerate the air flow in the second chamber 130 and heat dissipation, and also consider the air pressure difference at both sides of the membrane electrode assembly 110, and specifically, the working temperature of the hydrogen fuel power generation device is generally 65-75 ℃.
In some embodiments of the present invention, the system further includes a charge and discharge module 700, an energy storage module 800, and an inverter module 900, where the charge and discharge module 700 is connected to the pile module 100, the energy storage module 800, and the inverter module 900, and the control module 400 is connected to the charge and discharge module 700.
The charge-discharge module 700 may be selected from a conventional charge-discharge circuit, the energy storage module 800 may be a storage battery, etc., the inversion module 900 may be a conventional dc-ac inverter, the output of the membrane electrode assembly 110 may be output to the inversion module 900 by controlling the charge-discharge module 700, and then the output may be inverted to supply power to a load, or the electric energy may be stored in the energy storage module 800, and the energy storage module 800 may also provide a starting voltage to the membrane electrode assembly 110 through the charge-discharge circuit, and the energy storage module 800 may also be output to the inversion module 900 through the charge-discharge circuit and then be inverted to supply power to the load.
According to a second aspect of the present invention, a control method is applied to the hydrogen fuel power generation device disclosed in any one of the above embodiments, as shown in fig. 3, and the control method includes:
s100, controlling at least one of the first transmission module and the second transmission module to operate so that the air pressure of the first chamber is higher than the air pressure of the second chamber;
s200, acquiring a humidity detection value;
s300, when the humidity detection value is higher than a humidity preset range, controlling at least one of the first transmission module and the second transmission module to operate so as to increase the air pressure difference between the first chamber and the second chamber;
and S400, when the humidity detection value is lower than the humidity preset range, controlling at least one of the first transmission module and the second transmission module to operate so as to reduce the air pressure difference between the first chamber and the second chamber.
According to the control method, the air pressure difference at two sides of the membrane electrode assembly is regulated by controlling at least one of the first transmission module and the second transmission module, the air pressure value at two sides of the membrane electrode assembly is reduced on the basis that the low flow rate of hydrogen and oxygen is met, and the air pressure at the hydrogen side is slightly higher than the air pressure at the oxygen side, so that water can partially permeate to the hydrogen side at the oxygen side of the membrane electrode assembly, when the hydrogen flows through the membrane electrode assembly, the hydrogen combines with permeated water to enable the humidity to reach the reaction condition, in addition, the humidity of the first chamber is detected by the humidity detection module, when the humidity is too high, the air pressure difference at two sides of the membrane electrode assembly is increased, the hydrogen is prevented from being too high, and meanwhile, the hydrogen fuel power generation device can be regulated when the humidity is too low, so that the hydrogen fuel power generation device can stably operate.
In some embodiments of the present invention, the hydrogen fuel power generation device further includes a charge-discharge module, an energy storage module, and an inversion module, the charge-discharge module is connected with the pile module, the energy storage module, and the inversion module, respectively, and the control module is connected with the charge-discharge module; the control method further comprises the following steps: acquiring output voltage Ufc of the pile module, energy storage voltage Ub of the energy storage module and load output voltage Ul of the inversion module; in the starting stage, the energy storage module outputs power for the first transmission module, the second transmission module and the control module to start the galvanic pile module, and controls the inversion module not to output until the fuel output voltage Ufc reaches the load output voltage Ul, so that the energy storage module output is reduced, and the inversion module output is controlled; in the low power stage or when the fuel output voltage Ufc is higher than the load output voltage Ul and the fuel output voltage Ufc is higher than the energy storage voltage Ub, controlling the stack module output to supply the output of the inverter module and controlling the stack module output to charge the energy storage module; in a high power stage or when the fuel output voltage Ufc is lower than the load output voltage Ul, the output of the pile module and the discharge of the energy storage module are controlled to supply the output of the inversion module, wherein the constant current load of the hydrogen fuel power generation device provides the output, if the energy storage module is in a rated output range, the energy storage voltage Ub is not less than the load output voltage Ul, the output of the energy storage module plays a role in stabilizing the load output voltage, and the output of the pile module and the output of the energy storage module are reasonably distributed, so that the hydrogen fuel power generation device stably operates and stably supplies power for the load.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A hydrogen fuel power plant, characterized by comprising:
the electric pile module is internally provided with a containing cavity, the electric pile module is provided with a membrane electrode assembly in the containing cavity, the membrane electrode assembly divides the containing cavity into a first cavity and a second cavity, and the electric pile module is provided with a first air inlet communicated with the first cavity and a second air inlet communicated with the second cavity;
the first transmission module is in butt joint with the first air inlet and is used for inputting hydrogen into the first chamber;
the second transmission module is in butt joint with the second air inlet and is used for inputting oxygen or air into the second chamber;
the humidity detection module is used for detecting a humidity detection value in the first cavity;
the control module is electrically connected with the humidity detection module, and is electrically connected with at least one of the first transmission module and the second transmission module so as to control the air pressure difference at two sides of the membrane electrode assembly by controlling at least one of the first transmission module and the second transmission module to operate, so that the humidity detection value is in a humidity preset range.
2. A hydrogen-fueled power generating device according to claim 1, wherein: the electric pile module still be provided with the first gas outlet of first cavity intercommunication, the electric pile module is in be provided with first catalytic assembly in the first cavity, first catalytic assembly is located first air inlet with between the first gas outlet, first transmission module includes first air feed nest of tubes and retrieves the nest of tubes, the one end of first air feed nest of tubes is used for being connected with the air feed, retrieve the nest of tubes one end with first gas outlet butt joint intercommunication, retrieve the other end of nest of tubes respectively with the other end of first air feed nest of tubes and first air inlet butt joint intercommunication.
3. A hydrogen-fueled power generating device according to claim 2, wherein: the first air supply pipe group comprises a first constant pressure valve, one end of the first constant pressure valve is connected with an air supply source through a pipeline, the other end of the first constant pressure valve is respectively communicated with the other end of the first air supply pipe group and the first air inlet in a butt joint mode through a pipeline, and the control module is connected with the first constant pressure valve.
4. A hydrogen-fueled power generating device according to claim 2, wherein: the recovery pipe group comprises a one-way valve, a booster pump and a proportional valve, wherein the one-way valve, the booster pump and the proportional valve are connected through a pipeline to form at least part of recovery pipelines, one end of each recovery pipeline is in butt joint communication with the first air outlet, and the other end of each recovery pipeline is in butt joint communication with the other end of the corresponding first air supply pipe group and the corresponding first air inlet.
5. A hydrogen-fueled power generating device according to claim 1, wherein: the electric pile module still be provided with the second gas outlet of second cavity intercommunication, the electric pile module be provided with second catalytic assembly in the second cavity, second catalytic assembly is located the second air inlet with between the second gas outlet, the second transmission module includes second air feed pipe group and exhaust pipe group, the second air feed pipe group with second air inlet butt joint intercommunication, the exhaust pipe group with second gas outlet butt joint intercommunication.
6. A hydrogen-fueled power generating device according to claim 5, wherein: the second air supply pipeline comprises a blower and a second constant pressure valve, one end of the second constant pressure valve is connected with the blower through a pipeline, the other end of the second constant pressure valve is in butt joint communication with the second air inlet through a pipeline, the exhaust pipe group comprises a third constant pressure valve, one end of the third constant pressure valve is in butt joint communication with the second air outlet through a pipeline, and the control module is respectively connected with the second constant pressure valve and the third constant pressure valve.
7. A hydrogen-fueled power generating device according to claim 1, wherein: the electric pile module is provided with a temperature detection module in the first chamber, and the temperature detection module is connected with the control module.
8. The hydrogen fuel power generation device according to claim 1, further comprising a charge-discharge module, an energy storage module, and an inversion module, wherein the charge-discharge module is connected to the pile module, the energy storage module, and the inversion module, respectively, and the control module is connected to the charge-discharge module.
9. A control method, characterized by being applied to the hydrogen fuel power generation device according to any one of claims 1 to 7, comprising:
controlling at least one of the first transmission module and the second transmission module to operate so that the air pressure of the first chamber is higher than the air pressure of the second chamber;
acquiring the humidity detection value;
when the humidity detection value is higher than a humidity preset range, controlling at least one of the first transmission module and the second transmission module to operate so as to increase the air pressure difference between the first chamber and the second chamber;
and when the humidity detection value is lower than the humidity preset range, controlling at least one of the first transmission module and the second transmission module to operate so as to reduce the air pressure difference between the first chamber and the second chamber.
10. The control method according to claim 9, wherein the hydrogen fuel power generation device further comprises a charge-discharge module, an energy storage module and an inversion module, the charge-discharge module is connected with the pile module, the energy storage module and the inversion module, respectively, and the control module is connected with the charge-discharge module;
the control method further includes:
acquiring the output voltage of the pile module, the energy storage voltage of the energy storage module and the load output voltage of the inversion module;
in a starting stage, the energy storage module outputs power for the first transmission module, the second transmission module and the control module to start the galvanic pile module, and the inversion module is controlled not to output until the fuel output voltage reaches the load output voltage, the energy storage module output is reduced, and the inversion module output is controlled; controlling the stack module output to supply the output of the inverter module and controlling the stack module output to charge the energy storage module during a low power phase or when the fuel output voltage is higher than the load output voltage and the fuel output voltage is higher than the energy storage voltage;
and in a high power stage or when the fuel output voltage is lower than the load output voltage, controlling the output of the electric pile module and the discharge of the energy storage module to supply the output of the inversion module.
CN202210231058.1A 2022-03-09 2022-03-09 Hydrogen fuel power generation device and control method Pending CN116779916A (en)

Priority Applications (1)

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CN202210231058.1A CN116779916A (en) 2022-03-09 2022-03-09 Hydrogen fuel power generation device and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210231058.1A CN116779916A (en) 2022-03-09 2022-03-09 Hydrogen fuel power generation device and control method

Publications (1)

Publication Number Publication Date
CN116779916A true CN116779916A (en) 2023-09-19

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Country Link
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