CN114243057A - Hydrogen supply device, fuel cell power generation device, fuel cell hydrogen circulation device, and control method thereof - Google Patents
Hydrogen supply device, fuel cell power generation device, fuel cell hydrogen circulation device, and control method thereof Download PDFInfo
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- CN114243057A CN114243057A CN202210168841.8A CN202210168841A CN114243057A CN 114243057 A CN114243057 A CN 114243057A CN 202210168841 A CN202210168841 A CN 202210168841A CN 114243057 A CN114243057 A CN 114243057A
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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
- H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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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
- H01M8/04955—Shut-off or shut-down of fuel cells
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- 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
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- Y02E60/50—Fuel cells
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Abstract
The invention discloses a hydrogen supply device, a fuel cell power generation device, a fuel cell hydrogen circulating device and a control method thereof, wherein the fuel cell hydrogen circulating device comprises an ejector body, a multi-way valve seat, a multi-way electromagnetic valve and at least two ejector nozzles; the ejector body is provided with an air inlet joint, an ejector port joint and an air outlet joint respectively; an injection cavity is arranged in the injector body and comprises at least two sub injection cavities which are isolated from each other, and each sub injection cavity is provided with an injection nozzle; the multi-way valve seat is provided with a hydrogen inlet electromagnetic valve and at least two pressure control valves; the hydrogen inlet electromagnetic valve is communicated with the air inlet joint, and each pressure control valve is connected with the corresponding sub-injection cavity. The invention can furthest ensure the injection effect of a plurality of different working condition points; the requirements of small current and high excess factor ratio of small current density point and large current and low excess factor ratio of large current density point of the large power pile are met.
Description
Technical Field
The invention belongs to the technical field of hydrogen supply, relates to a fuel cell, and particularly relates to a hydrogen supply circulating device of the fuel cell and a control method thereof.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, the fuel cell uses fuel and oxygen as well as has no mechanical transmission parts, so that the fuel cell has no noise and discharges harmful gases with little acoustic pollution.
In order to improve the hydrogen utilization rate, reduce the power generation cost of the fuel cell and obtain higher stack performance, the anode hydrogen of the stack is frequently circularly supplied. The common hydrogen circulation supply scheme has two technical routes of an ejector and a circulating pump, provides hydrogen with stable pressure for the operation of a galvanic pile and contributes to the pressure balance and the water balance of a PEM (proton exchange membrane).
The hydrogen ejector converts potential energy of high-pressure gas into kinetic energy by passing high-pressure low-flow-rate hydrogen from the hydrogen storage bottle through the ejector by utilizing the Venturi working principle, and sucks the hydrogen at the outlet of the fuel cell back to the inlet and mixes the hydrogen with the hydrogen supplied by the high-pressure hydrogen storage bottle. The mixed hydrogen has certain temperature and humidity, which is beneficial to improving the working performance of the fuel cell stack.
Because the hydrogen ejector is a passive circulating device, the ratio of the excess coefficients capable of circulating is fixed after the mechanical structure is determined, and the maximum hydrogen supply flow rate can be provided by the characteristics of the Venturi tube, the larger the excess coefficient is, the smaller the excess coefficient is in the whole working range. The high-power electric pile has the characteristics of high requirement on the hydrogen excess coefficient of a small electric density point and low requirement on the hydrogen excess coefficient of a large electric density point. The ejector capable of meeting the hydrogen demand of the high-power galvanic pile cannot meet the hydrogen excess coefficient of a small electric density point.
In view of the above, there is a need to design a new hydrogen recycling device to overcome at least some of the above-mentioned disadvantages of the existing hydrogen recycling devices.
Disclosure of Invention
The invention provides a hydrogen supply device, a fuel cell power generation device, a fuel cell hydrogen circulating device and a control method thereof, which can ensure the injection effect of a plurality of different working condition points to the maximum extent.
In order to solve the technical problem, according to one aspect of the present invention, the following technical solutions are adopted:
a fuel cell hydrogen circulation device comprising: the multi-way electromagnetic valve comprises an ejector body, a multi-way electromagnetic valve and at least two ejector nozzles.
The ejector body is provided with an air inlet joint, an ejector port joint and an air outlet joint respectively; the injection cavity is arranged in the injector body and comprises at least two sub injection cavities which are isolated from each other, and each sub injection cavity is provided with an injection nozzle.
At least two sub-injection cavities which are isolated from each other exist, the two sub-injection cavities have injection nozzles and cavity structures with different diameters, and the two sub-injection cavities are respectively adapted to different working conditions of high injection equivalent ratio and low flow demand of a small electric-dense section and low injection equivalent ratio and high flow demand of a large electric-dense section of a high-power electric pile.
The multi-way valve seat is provided with a hydrogen inlet electromagnetic valve and at least two pressure control valves; the hydrogen inlet electromagnetic valve is communicated with the air inlet joint, and each pressure control valve is connected with the corresponding sub-injection cavity.
The ejector body is connected with the multi-way electromagnetic valve; the multi-way electromagnetic valve comprises a first passage connected with the air inlet joint and at least two second passages respectively connected with the injection spaces, and the second passages are connected with the injection port joint.
The fuel cell hydrogen circulation device further comprises a controller, wherein the controller is used for receiving pressure data of a set area in the injection cavity.
The output end of the controller is connected with the input end of the multi-way electromagnetic valve and the input end of each pressure control valve, and is used for sending control signals to the multi-way electromagnetic valve and each pressure control valve to control the action of the multi-way electromagnetic valve and each pressure control valve.
The controller is used for generating control data of each pressure control valve according to the received pressure data of the set area of the injection cavity; the controller controls the pressure control valve at the front end of the injection cavity of the stator to be opened according to different pressure data, so that the injection cavity is in an operating state, the pressure control valves at the front ends of other sub injection cavities are controlled to be closed, the multi-way electromagnetic valve is switched to the sub injection cavity in operation, and a corresponding injection effect is provided.
As an embodiment of the present invention, the fuel cell hydrogen circulation device includes two injection nozzles; the injection cavity comprises two sub injection cavities which are isolated from each other, and each sub injection cavity is provided with an injection nozzle; the multi-way electromagnetic valve is a three-way electromagnetic valve, the multi-way valve seat is a three-way valve seat, and the three-way valve seat is provided with a hydrogen inlet electromagnetic valve and two pressure control valves.
As an embodiment of the present invention, the fuel cell hydrogen circulation device further includes: a multi-way valve seat; the multi-way valve seat is provided with a hydrogen inlet electromagnetic valve and at least two pressure control valves;
the hydrogen inlet electromagnetic valve is connected with the multi-way valve seat through threads, and the pressure control valve is connected with the multi-way valve seat through a flange structure;
the air inlet connector is connected to the multi-way valve seat through threads, the air outlet connector is connected to the ejector body through a flange, and the ejector port connector is connected to the multi-way electromagnetic valve through threads.
As an embodiment of the invention, the ejector body is provided with a pressure relief valve, and the pressure relief valve is connected with the air outlet joint; the pressure relief valve is connected with the injection cavity and used for discharging hydrogen when the pressure in the injection cavity exceeds a set threshold; the output end of the controller is connected with the input end of the pressure release valve and used for sending the control signal to the pressure release valve to control the action of the pressure release valve.
As an embodiment of the present invention, the fuel cell hydrogen circulation device further includes a pressure sensor, and the pressure sensor is configured to sense pressure data of a set area in the injection cavity.
The input end of the controller is connected with the output end of the pressure sensor and used for receiving pressure data sensed by the pressure sensor.
According to another aspect of the invention, the following technical scheme is adopted: a hydrogen gas supply device, comprising: the fuel cell hydrogen circulation device is provided.
As an embodiment of the present invention, the hydrogen gas supply device further includes a hydrogen storage container, and the air inlet connector of the fuel cell hydrogen circulation device is connected to the hydrogen storage container.
According to another aspect of the invention, the following technical scheme is adopted: a fuel cell power plant, comprising: the fuel cell hydrogen circulation device is provided.
In one embodiment of the present invention, the fuel cell power plant further includes a hydrogen storage container and a fuel cell.
The air inlet joint of the fuel cell hydrogen circulating device is connected with the hydrogen storage container; and the excessive hydrogen output end of the fuel cell is connected with the injection port connector.
According to another aspect of the invention, the following technical scheme is adopted: a control method of the above fuel cell hydrogen circulation device, the control method comprising:
the method comprises the steps that pressure data of a set area of an injection cavity are received by a controller;
the controller controls the pressure control valve at the front end of the injection cavity of the stator to be opened according to different pressure data, so that the injection cavity is in an operating state, the pressure control valves at the front ends of other sub injection cavities are controlled to be closed, the multi-way electromagnetic valve is switched to the sub injection cavity in operation, and a corresponding injection effect is provided.
The invention has the beneficial effects that: the hydrogen supply device, the fuel cell power generation device, the fuel cell hydrogen circulating device and the control method thereof can ensure the injection effect of a plurality of different working condition points to the maximum extent; the requirements of small current and high excess factor ratio of small current density point and large current and low excess factor ratio of large current density point of the large power pile are met. Meanwhile, the multi-way electromagnetic valve isolates at least two injection channels, so that the phenomena of hydrogen backflow and the like can be effectively prevented, and the injection circulation effect is improved.
Drawings
Fig. 1 is a schematic structural diagram of a hydrogen circulation device of a fuel cell according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a hydrogen circulation device of a fuel cell according to an embodiment of the present invention.
Fig. 3 is a schematic circuit control diagram of a fuel cell hydrogen circulation device according to an embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
The description in this section is for several exemplary embodiments only, and the present invention is not limited only to the scope of the embodiments described. It is within the scope of the present disclosure and protection that the same or similar prior art means and some features of the embodiments may be interchanged.
The steps in the embodiments in the specification are only expressed for convenience of description, and the implementation manner of the present application is not limited by the order of implementation of the steps. The term "connected" in the specification includes both direct connection and indirect connection.
It should be noted that, because the components with different names in different embodiments have the same functions, the same reference numerals are used, which can be understood by those skilled in the art.
Fig. 1 and 2 are schematic structural diagrams of a fuel cell hydrogen circulation device according to an embodiment of the present invention, and fig. 3 is a schematic circuit control diagram of a fuel cell hydrogen circulation device according to an embodiment of the present invention; referring to fig. 1 to 3, the hydrogen circulation device for a fuel cell includes: the multi-way electromagnetic valve comprises an ejector body 1, a multi-way valve seat 2 (at least three passages), a multi-way electromagnetic valve 3 (at least three passages) and at least two injection nozzles (at least comprising a first injection nozzle 4 and a second injection nozzle 5).
The ejector body 1 is provided with an air inlet joint 6, an ejector port joint 7 and an air outlet joint 8 respectively; an injection cavity is arranged in the injector body 6 and comprises at least two sub injection cavities (at least comprising a first sub injection cavity 9 and a second sub injection cavity 10) which are isolated from each other; each sub-injection cavity is provided with an injection nozzle, wherein the first sub-injection cavity 9 is provided with a first injection nozzle 4, and the second sub-injection cavity 10 is provided with a second injection nozzle 5. At least two sub-injection cavities which are isolated from each other exist, the two sub-injection cavities have injection nozzles and cavity structures with different diameters, and the two sub-injection cavities are respectively adapted to different working conditions of high injection equivalent ratio and low flow demand of a small electric-dense section and low injection equivalent ratio and high flow demand of a large electric-dense section of a high-power electric pile.
The injector body 1 is connected with the multi-way valve seat 2, and the multi-way valve seat 2 is provided with a hydrogen inlet electromagnetic valve 13 and at least two pressure control valves (at least comprising a first pressure control valve 14 and a second pressure control valve 15); the hydrogen inlet electromagnetic valve 13 is communicated with the air inlet joint 6, and each pressure control valve is respectively connected with the corresponding sub-injection cavity (the first pressure control valve 14 is connected with the first sub-injection cavity 9, and the second pressure control valve 15 is connected with the second sub-injection cavity 10).
The ejector body 1 is connected with the multi-way electromagnetic valve 3; the multi-way electromagnetic valve 3 comprises a first passage connected with the air inlet joint 6 and at least two second passages respectively connected with the injection spaces, and the second passages are connected with the injection port joint 7. In one embodiment, the multi-way solenoid valve 3 comprises two second passages.
In an embodiment of the present invention, the fuel cell hydrogen circulation device includes two injection nozzles (a first injection nozzle 4 and a second injection nozzle 5); the injection cavity comprises two sub injection cavities (a first sub injection cavity 9 and a second sub injection cavity 10) which are isolated from each other, and each sub injection cavity is provided with an injection nozzle; the multi-way electromagnetic valve is a three-way electromagnetic valve, the multi-way valve seat is a three-way valve seat, and the three-way valve seat is provided with a hydrogen inlet electromagnetic valve and two pressure control valves (a first pressure control valve 14 and a second pressure control valve 15). The hydrogen inlet electromagnetic valve 13 is connected with the multi-way valve seat 2 through threads, and the pressure control valve is connected with the multi-way valve seat 2 through a flange structure. The air inlet connector 6 is connected to the multi-way valve seat 2 through threads, the air outlet connector 8 is connected to the ejector body 1 through a flange, and the ejector connector 7 is connected to the multi-way electromagnetic valve 3 through threads.
The ejector body 1 is provided with a pressure relief valve 16, and the pressure relief valve 16 is connected with the air outlet joint 8; the pressure release valve 16 is connected with the injection cavity and used for discharging hydrogen when the pressure in the injection cavity exceeds a set threshold value. In one embodiment, the pressure relief valve 16 may be a mechanical pressure relief valve.
The fuel cell hydrogen circulating device further comprises a controller 17 and a pressure sensor 18, wherein the pressure sensor 18 is used for sensing pressure data of a set area in the injection cavity. The input end of the controller 17 is connected to the output end of the pressure sensor 18 for receiving the pressure data sensed by the pressure sensor 18. The output end of the controller 17 is connected to the input end of the multi-way electromagnetic valve 3, the input end of the pressure release valve 16 and the input end of each pressure control valve (the first pressure control valve 14 and the second pressure control valve 15) to send control signals to the multi-way electromagnetic valve 3, the pressure release valve 16 and each pressure control valve to control the actions of the multi-way electromagnetic valve 3, the pressure release valve 16 and each pressure control valve.
The controller 17 is configured to monitor pressure data of the set region of the injection cavity according to data sensed by the pressure sensor 18, so as to generate control data of each pressure control valve. The controller 17 controls the pressure control valve at the front end of the injection cavity of the stator to be opened according to different pressure data, so that the injection cavity is in an operating state, the pressure control valves at the front ends of other sub injection cavities are controlled to be closed, the multi-way electromagnetic valve is switched to the sub injection cavity in operation, and a corresponding injection effect is provided. In one embodiment, the controller 17 can control the first pressure control valve 14 at the front end of the first sub injection cavity 9 to open and the second pressure control valve 15 at the front end of the second sub injection cavity 10 to close according to the pressure data, so that the first sub injection cavity 9 is in an operating state, and a first injection effect is provided (for example, the requirement of high injection equivalence ratio and low flow rate of a small electrical section of a large-power electrical pile can be met); the controller 17 can control the second pressure control valve 15 at the front end of the second sub-injection cavity 10 to be opened and the first pressure control valve 14 at the front end of the first sub-injection cavity 9 to be closed according to pressure data, so that the second sub-injection cavity 10 is in an operating state, and a second injection effect (such as the requirement of large injection equivalent ratio of large electric density section can be adapted) is provided.
In one embodiment of the invention, the multi-way valve seat 2 may not be provided; the independent hydrogen supply pipeline and two paths of hydrogen inlet electromagnetic valves and pressure control valves can be used for replacing, and the fact that independent pressure control valves are arranged in each sub-injection cavity is guaranteed.
In addition, the pressure relief valve may not be integrated with the eductor body (i.e., the pressure relief valve may not be part of the fuel cell hydrogen gas recycle device); the pressure sensor may not be integrated on the ejector body (i.e. the pressure sensor may not be part of the hydrogen circulation device of the fuel cell), but the outlet of the ejector needs to be connected with the pressure sensor additionally, so as to ensure that pressure data is fed back to the controller as the signal input for control).
Referring to fig. 1 and 2, the hydrogen circulation device of the fuel cell forms two injectors, which are a one-way injector and a two-way injector respectively.
One way of ejector includes tee bend disk seat 2, hydrogen advances solenoid valve 6, first pressure control valve 14 and ejector body 1, hydrogen advances solenoid valve 6 and links to each other with tee bend disk seat 2 through the screw thread, first pressure control valve 14 passes through the flange structure and links to each other with tee bend disk seat 2, tee bend disk seat 2 links to each other with ejector body 1, this internal first injection nozzle 4 that is provided with of ejector, the fixed mechanical relief valve 16 that is provided with in 1 upper end of ejector body, the fixed pressure sensor 8 that is provided with in 6 upper ends of ejector body, 6 bottoms of ejector body are connected with tee bend solenoid valve 10 through the flange mode.
The two-way ejector comprises a three-way valve seat 2, a hydrogen inlet electromagnetic valve 6, a second pressure control valve 15 and an ejector body 1, wherein the hydrogen inlet electromagnetic valve 6 is connected with the three-way valve seat 2 through threads, the second pressure control valve 15 is connected with the three-way valve seat 2 through a flange structure, the three-way valve seat 2 is connected with the ejector body 1, and a second ejector nozzle 5 is arranged in the ejector body 1.
The air inlet connector 6 is connected to the three-way valve seat 2 through threads, the air outlet connector 8 is connected to the ejector body 1 through a flange, and the injection port connector 7 is connected to the three-way electromagnetic valve 3 through threads.
The hydrogen inlet solenoid valve 6, the first pressure control valve 14, the second pressure control valve 15, the pressure sensor 18 and the three-way solenoid valve 3 are electrically connected with the controller 17 through leads.
It should be noted that the invention is a fuel cell hydrogen circulating device with selectable parallel double ejectors, when in work, the three-way valve seat 2 can provide an effective communication means for the hydrogen inlet electromagnetic valve 6 and the first pressure control valve 14, thereby improving the installation reliability, the supply and the cut-off of the hydrogen at the front end are controlled by the hydrogen inlet electromagnetic valve 6, the flow and the pressure of the supplied hydrogen are controlled by the first pressure control valve 14 (or the second pressure control valve 15), the first injection nozzle 4 (or the second injection nozzle 5) is arranged in the ejector body 1, the high-pressure low-flow-rate hydrogen provided by the first pressure control valve 14 (or the second pressure control valve 15) can pass through the ejector body 1, the potential energy of the high-pressure gas is converted into kinetic energy by utilizing the Venturi working principle, the hydrogen at the outlet of the fuel cell is sucked back to the inlet and is mixed with the hydrogen supplied by the high-pressure hydrogen storage bottle.
The hydrogen after mixing has certain temperature, humidity, be favorable to improving the working property of fuel cell stack, can be when drawing 1 internal pressure of injection cavity too high through mechanical relief valve 16, discharge hydrogen from the relief valve, prevent that the galvanic pile from receiving high-pressure hydrogen and assault, can monitor the pressure of ejector body 1 rear end through pressure sensor 18, for the control feedback numerical value of first pressure control valve 14 (or second pressure control valve 15), carry out closed-loop control, can switch over two parallelly connected ejector runners through three solenoid valve 3, provide the injection efficiency of difference at different operating points.
The invention discloses a hydrogen supply device, comprising: the fuel cell hydrogen circulation device is provided. In an embodiment of the invention, the hydrogen supply device further comprises a hydrogen storage container, and the air inlet connector of the fuel cell hydrogen circulation device is connected with the hydrogen storage container.
The present invention also discloses a fuel cell power plant, comprising: the fuel cell hydrogen circulation device is provided. In one embodiment of the present invention, the fuel cell power plant further comprises a hydrogen storage container, a fuel cell; the air inlet joint of the fuel cell hydrogen circulating device is connected with the hydrogen storage container; and the excessive hydrogen output end of the fuel cell is connected with the injection port connector.
The invention further discloses a control method of the fuel cell hydrogen circulation device, which comprises the following steps: monitoring pressure data of the set area of the injection cavity according to data sensed by the pressure sensor so as to generate control data of each pressure control valve; the multi-way electromagnetic valve is controlled to act according to different working modes, so that the working state of each injection nozzle is controlled, and different injection efficiencies are provided.
In summary, the hydrogen supply device, the fuel cell power generation device, the fuel cell hydrogen circulation device and the control method thereof provided by the invention can ensure the injection effect of a plurality of different working condition points to the maximum extent; the requirements of small current and high excess factor ratio of small current density point and large current and low excess factor ratio of large current density point of the large power pile are met. Meanwhile, the multi-way electromagnetic valve isolates at least two injection channels, so that the phenomena of hydrogen backflow and the like can be effectively prevented, and the injection circulation effect is improved.
It should be noted that the present application may be implemented in software and/or a combination of software and hardware; for example, it may be implemented using Application Specific Integrated Circuits (ASICs), general purpose computers, or any other similar hardware devices. In some embodiments, the software programs of the present application may be executed by a processor to implement the above steps or functions. As such, the software programs (including associated data structures) of the present application can be stored in a computer-readable recording medium; such as RAM memory, magnetic or optical drives or diskettes, and the like. In addition, some steps or functions of the present application may be implemented using hardware; for example, as circuitry that cooperates with the processor to perform various steps or functions.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The description and applications of the invention herein are illustrative and are not intended to limit the scope of the invention to the embodiments described above. Effects or advantages referred to in the embodiments may not be reflected in the embodiments due to interference of various factors, and the description of the effects or advantages is not intended to limit the embodiments. Variations and modifications of the embodiments disclosed herein are possible, and alternative and equivalent various components of the embodiments will be apparent to those skilled in the art. It will be clear to those skilled in the art that the present invention may be embodied in other forms, structures, arrangements, proportions, and with other components, materials, and parts, without departing from the spirit or essential characteristics thereof. Other variations and modifications of the embodiments disclosed herein may be made without departing from the scope and spirit of the invention.
Claims (10)
1. A fuel cell hydrogen circulation device, characterized by comprising: the multi-way electromagnetic valve comprises an ejector body, a multi-way electromagnetic valve and at least two ejector nozzles;
the ejector body is provided with an air inlet joint, an ejector port joint and an air outlet joint respectively; an injection cavity is arranged in the injector body and comprises at least two sub injection cavities which are isolated from each other, and each sub injection cavity is provided with an injection nozzle;
two sub-injection cavities are arranged in the at least two sub-injection cavities which are isolated from each other, have injection nozzles with different diameters and cavity structures, and are respectively adapted to different working conditions of high injection equivalent ratio and low flow demand of a small electric-dense section and low injection equivalent ratio and high flow demand of a large electric-dense section of the high-power electric pile;
the multi-way valve seat is provided with a hydrogen inlet electromagnetic valve and at least two pressure control valves; the hydrogen inlet electromagnetic valve is communicated with the air inlet joint, and each pressure control valve is connected with the corresponding sub injection cavity;
the ejector body is connected with the multi-way electromagnetic valve; the multi-way electromagnetic valve comprises a first passage connected with the air inlet joint and at least two second passages respectively connected with the injection spaces, and each second passage is connected with the injection port joint;
the fuel cell hydrogen circulating device further comprises a controller, wherein the controller is used for receiving pressure data of a set area in the injection cavity;
the output end of the controller is connected with the input end of the multi-way electromagnetic valve and the input end of each pressure control valve, and is used for sending control signals to the multi-way electromagnetic valve and each pressure control valve to control the action of the multi-way electromagnetic valve and each pressure control valve;
the controller is used for generating control data of each pressure control valve according to the received pressure data of the set area of the injection cavity; the controller controls the pressure control valve at the front end of the injection cavity of the stator to be opened according to different pressure data, so that the injection cavity is in an operating state, the pressure control valves at the front ends of other sub injection cavities are controlled to be closed, the multi-way electromagnetic valve is switched to the sub injection cavity in operation, and a corresponding injection effect is provided.
2. The fuel cell hydrogen circulation device according to claim 1, wherein:
the material battery hydrogen circulating device comprises two injection nozzles; the injection cavity comprises two sub injection cavities which are isolated from each other, and each sub injection cavity is provided with an injection nozzle;
the multi-way electromagnetic valve is a three-way electromagnetic valve, the multi-way valve seat is a three-way valve seat, and the three-way valve seat is provided with a hydrogen inlet electromagnetic valve and two pressure control valves.
3. The fuel cell hydrogen circulation device according to claim 1, wherein:
the fuel cell hydrogen circulation device further includes: a multi-way valve seat; the multi-way valve seat is provided with a hydrogen inlet electromagnetic valve and at least two pressure control valves;
the hydrogen inlet electromagnetic valve is connected with the multi-way valve seat through threads, and the pressure control valve is connected with the multi-way valve seat through a flange structure;
the air inlet connector is connected to the multi-way valve seat through threads, the air outlet connector is connected to the ejector body through a flange, and the ejector port connector is connected to the multi-way electromagnetic valve through threads.
4. The fuel cell hydrogen circulation device according to claim 1, wherein:
the ejector body is provided with a pressure relief valve, and the pressure relief valve is connected with the air outlet connector; the pressure relief valve is connected with the injection cavity and used for discharging hydrogen when the pressure in the injection cavity exceeds a set threshold;
the output end of the controller is connected with the input end of the pressure release valve and used for sending the control signal to the pressure release valve to control the action of the pressure release valve.
5. The fuel cell hydrogen circulation device according to claim 1, wherein:
the fuel cell hydrogen circulating device further comprises a pressure sensor, wherein the pressure sensor is used for sensing pressure data of a set area in the injection cavity;
the input end of the controller is connected with the output end of the pressure sensor and used for receiving pressure data sensed by the pressure sensor.
6. A hydrogen gas supply device characterized by comprising: a fuel cell hydrogen cycle apparatus as claimed in any one of claims 1 to 5.
7. The hydrogen gas supply device according to claim 6, characterized in that:
the hydrogen supply device further comprises a hydrogen storage container, and the air inlet connector of the fuel cell hydrogen circulation device is connected with the hydrogen storage container.
8. A fuel cell power plant, characterized by comprising: a fuel cell hydrogen cycle apparatus as claimed in any one of claims 1 to 5.
9. A fuel cell power plant according to claim 8, characterized in that:
the fuel cell power plant further comprises a hydrogen storage container, a fuel cell;
the air inlet joint of the fuel cell hydrogen circulating device is connected with the hydrogen storage container; and the excessive hydrogen output end of the fuel cell is connected with the injection port connector.
10. A control method of a hydrogen circulation device for a fuel cell according to any one of claims 1 to 5, characterized by comprising:
the method comprises the steps that pressure data of a set area of an injection cavity are received by a controller;
the controller controls the pressure control valve at the front end of the injection cavity of the stator to be opened according to different pressure data, so that the injection cavity is in an operating state, the pressure control valves at the front ends of other sub injection cavities are controlled to be closed, the multi-way electromagnetic valve is switched to the sub injection cavity in operation, and a corresponding injection effect is provided.
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