CN111129547A - Identification control device and method for gas quality of cathode air filter of hydrogen fuel cell - Google Patents
Identification control device and method for gas quality of cathode air filter of hydrogen fuel cell Download PDFInfo
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- CN111129547A CN111129547A CN201911410571.1A CN201911410571A CN111129547A CN 111129547 A CN111129547 A CN 111129547A CN 201911410571 A CN201911410571 A CN 201911410571A CN 111129547 A CN111129547 A CN 111129547A
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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
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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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04231—Purging 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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention relates to a recognition control device and a method for gas quality of a cathode air filter of a hydrogen fuel cell, wherein a gas outlet end of a particle filter in the device is connected with a gas inlet end of a flow regulating valve; when the device is used, the acidity and the alkalinity of the gas at the outlet of the acid-base composite filter are monitored by the acid sensor and the alkalinity sensor, and then the flow distribution of the outlet of the flow regulating valve is controlled by the regulating flow regulating valve, so that the acidity and the alkalinity of the air entering the cathode of the hydrogen fuel cell are effectively identified and controlled.
Description
Technical Field
The invention belongs to the field of fuel cells, and relates to a device and a method for identifying and controlling gas quality of a cathode air filter of a hydrogen fuel cell.
Background
With the increasing problems of energy consumption and environmental pollution, the traditional fuel vehicles are under great pressure as new momentum of new energy vehicles, and the fuel cell vehicles have the advantages of no pollution, high energy conversion efficiency, fast fuel filling and the like, and are widely concerned at home and abroad;
the air supply system is an indispensable auxiliary system in the fuel cell system and provides clean air for the fuel cell so that the oxidant and the fuel provided by the hydrogen supply system can chemically react in the fuel cell stack to generate electric energy.
The conventional fuel cell cathode air supply adopts a passive filtering system integrating a particle filter and a harmful gas filter, and lacks the identification and active, real-time and accurate control of the air quality and the working state of the system.
Therefore, the development of a gas quality identification control device and method for a cathode air filter of a hydrogen fuel cell still has great significance.
Disclosure of Invention
The invention aims to provide a device and a method for identifying and controlling gas quality of a cathode air filter of a hydrogen fuel cell, wherein a gas outlet end of a particle filter in the device is connected with a gas inlet end of a flow regulating valve; in the using process of the device, the acidity and the alkalinity of the gas at the outlet of the acid-base composite filter are monitored by the acid sensor and the alkalinity sensor, so that the flow distribution of the gas outlet end of the flow regulating valve is controlled by regulating the flow regulating valve, and the purpose of effectively identifying and controlling the acidity and the alkalinity of the air entering the cathode of the hydrogen fuel cell is achieved.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a device for identifying and controlling gas quality of a cathode air filter of a hydrogen fuel cell, which comprises a particle filter and an acid-base composite filter, wherein a gas outlet end of the particle filter is connected with a gas inlet end of a flow regulating valve, an acid filter and an alkaline filter are connected between the gas outlet end of the flow regulating valve and the gas inlet end of the acid-base composite filter in parallel, and a gas outlet end of the acid-base composite filter is connected with an acid sensor and an alkaline sensor.
Herein, the parallel connection of the acid filter and the alkaline filter between the gas outlet end of the flow regulating valve and the gas inlet end of the acid-base composite filter means that the gas inlet ends of the acid filter and the alkaline filter are connected to the gas outlet end of the flow regulating valve, and the gas outlet ends of the acid filter and the alkaline filter are connected to the gas inlet end of the acid-base composite filter.
According to the device, an acid sensor and an alkaline sensor are connected to the outlet end of an acid-base composite filter, a flow regulating valve is connected to the gas outlet end of a particle filter, the gas inlet of the flow regulating valve is connected with the gas outlet end of the particle filter, and the acid filter and the alkaline filter are connected in parallel between the flow regulating valve and the acid-base composite filter; in the use process of the device, according to the acid and alkaline signals of the air monitored by the acid sensor and the alkaline sensor, the signals are processed and then used for adjusting the outlet flow distribution of the flow adjusting valve, namely, the gas flow ratio of the acid filter and the alkaline filter is adjusted, so that the acid and alkaline of the air entering the cathode of the hydrogen fuel cell can be accurately and effectively identified and controlled, and the stable operation of the hydrogen fuel cell is guaranteed.
At least 1 acid filter and at least 1 alkaline filter are connected in parallel between the flow regulating valve and the acid-base composite filter, the acid filters and the alkaline filters are arranged in parallel, and the gas inlet ends of the acid filters and the alkaline filters correspond to different gas outlet ends of the flow regulating valve; the acid-base condition of the gas is judged according to the monitoring signals of the acid sensor and the base sensor in the using process of the device, so that the gas flow distribution entering the acid filter and the base filter is adjusted, and the effect of accurately controlling the acid-base property of the air is achieved.
Preferably, the device further comprises a control unit, the acidity sensor is connected with the control unit, and the control unit can receive a monitoring signal of the acidity sensor.
Preferably, the alkaline sensor is connected with the control unit, and the control unit can receive a monitoring signal of the alkaline sensor.
Preferably, the acid sensor and the base sensor are connected in series.
Preferably, the gas inlet end of the flow regulating valve is connected with the gas outlet end of the particulate filter, the flow regulating valve comprising at least two outlet ends.
Preferably, the flow regulating valve is a three-way flow regulating valve.
Preferably, the flow regulating valve is connected with the control unit, and the control unit can control the flow distribution of the gas outlet end of the flow regulating valve.
The device also comprises a control unit, wherein the control unit is used for receiving and processing the acid-base signals monitored by the acid sensor and the base sensor, then converting the acid-base signals into control signals, controlling the flow distribution of the gas at the outlet of the flow regulating valve in real time, further controlling the flow distribution of the gas entering the acid filter and the base filter, and finally achieving the effect of identifying and controlling the acid-base of the air entering the cathode of the hydrogen fuel cell in real time.
Preferably, a pressure sensor is provided between the gas outlet end of the particulate filter and the gas inlet end of the flow regulating valve.
The pressure sensor of the present invention is arranged to determine the clogging of the particulate filter based on the signal from the pressure sensor during use of the device, thereby ensuring that a sufficient amount of air is supplied to the hydrogen fuel cell.
Preferably, the acidity sensor is SO2A sensor.
Preferably, the alkalinity sensor is NH3A sensor.
The acid gases in the air mainly comprise SO2The alkaline gas mainly comprising NH3The proposal of the invention is to connect SO in series at the gas outlet end of the composite air filter2Sensor and NH3Sensor to monitor in real time the SO in the air entering the cathode of the cell2And NH3Then calculating to obtain a proper gas flow distribution proportion at the outlet end of the flow regulating valve, thereby effectively identifying and controlling the acidity and alkalinity of the air.
In a second aspect, the invention provides a method for identifying and controlling gas quality of a cathode air filter of a hydrogen fuel cell, which adopts the device in the first aspect, and the method comprises the steps of monitoring the acidity and alkalinity of gas at the outlet of an acid-base composite filter by using an acidity sensor and an alkalinity sensor to obtain an acidity-alkalinity signal, then controlling the flow distribution of the outlet end of a flow regulating valve according to the acidity-alkalinity signal, and regulating the flow ratio of the gas entering the acid filter and the alkaline filter.
Preferably, the acid-base signal enters a control unit, and after the control unit processes the acid-base signal, the control unit controls a flow regulating valve to regulate the flow distribution at the outlet of the flow regulating valve.
Preferably, a pressure sensor is arranged between the gas outlet end of the particle filter and the gas inlet end of the flow regulating valve, and the blockage condition of the particle filter is judged through the pressure sensor.
The working principle of the gas quality identification control device of the cathode air filter of the hydrogen fuel cell is as follows: the acid-base property of the air at the outlet end of the composite acid-base filter is monitored through the acid sensor and the alkaline sensing gas connected to the gas outlet end of the composite acid-base filter, and then the monitoring signal is analyzed and calculated, so that a proper flow regulating valve outlet gas distribution proportion is obtained, the air proportion entering the acid filter and the alkaline filter is controlled, the quality of the air entering the cathode of the hydrogen fuel cell is controlled, and the quality of the supplied air is guaranteed.
Meanwhile, a pressure sensor is arranged between the gas outlet end of the particle filter and the gas inlet end of the flow regulating valve, and the gas pressure is monitored, so that the blockage condition of the particle filter is judged, and sufficient air is guaranteed to be provided for the cathode of the battery.
Compared with the prior art, the invention has the following beneficial effects:
(1) in the use process of the device, the acid-base signal of the air entering the cell is monitored by the acid sensor and the base sensor, and then the flow distribution of the outlet end of the flow regulating valve is controlled according to the signal, so that the gas flow distribution proportion of the acid sensor and the base sensor is regulated, and the acid-base property of the air entering the hydrogen fuel cell is identified and controlled in real time;
(2) the device of the invention realizes intelligent identification and control of the air quality of the cathode of the fuel cell, can ensure reliable air to be supplied to the hydrogen fuel cell, and ensures that the acid filter and the alkaline filter can be fully used;
(3) the device can realize the full use of various filter elements under different environmental working conditions, and ensure that a hydrogen fuel cell system can reliably obtain sufficient and clean air.
Drawings
Fig. 1 is a schematic structural view of a gas quality recognition control device for a cathode air cleaner of a hydrogen fuel cell according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a gas quality identification control device for a cathode air filter of a hydrogen fuel cell according to embodiment 2 of the present invention.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The structural schematic diagram of the identification control device for the gas quality of the cathode air filter of the hydrogen fuel cell in the embodiment is shown in fig. 1, and as can be seen from fig. 1, the device includes a particulate filter, a gas outlet end of the particulate filter is connected with a gas inlet end of a flow regulating valve, an acid filter and an alkaline filter are connected in parallel between the gas outlet end of the flow regulating valve and a gas inlet end of an acid-base composite filter, and an outlet end of the acid-base composite filter is connected with an acid sensor and an alkaline sensor.
The flow control valve that the device adopted of this embodiment is the three-way valve, and it contains a gas inlet end and two gas outlet ends, gas inlet end with particulate filter's gas outlet end is connected, the gas inlet end of acid filter and the gas inlet end of alkaline filter are connected respectively to two gas outlet ends, contain the flow ratio of the different exit ends of the adjustable three-way valve of flow control device in the flow control valve.
The acidity sensor used in this example was SO2The sensor is alkaline sensor NH3The sensor monitors SO in gas at the outlet end of the acid-base composite filter through the sensor2And NH3SO as to adjust the flow ratio of the gas entering the acid filter and the alkaline filter, thereby realizing the SO in the air2And NH3And identifying and controlling the content.
In the use process of the device, air enters the flow regulating valve through the particle filter, then enters the acid filter and the alkaline filter through different outlet ends of the flow regulating valve respectively, then the air flow is mixed and enters the acid-base composite filter, and the gas flowing out of the acid-base composite filter passes through SO2Sensor and NH3The sensor monitors the pH value and the after gasThe body enters the hydrogen fuel cell cathode; by passing through SO2Sensor and NH3The sensor obtains the acid-base signal of the gas, so that the flow regulating valve is regulated to control the gas distribution proportion at the outlet of the flow regulating valve, and the gas flow proportion entering the acid filter and the alkaline filter is controlled, thereby achieving the effect of effectively identifying and controlling the acid-base property of the air.
Example 2
The structural schematic diagram of the identification control device for the gas quality of the cathode air filter of the hydrogen fuel cell in the embodiment is shown in fig. 2, and as can be seen from fig. 2, the identification control device includes a particulate filter, a gas outlet end of the particulate filter is connected with a gas inlet end of a flow regulating valve, an acidic filter and an alkaline filter are connected in parallel between an outlet end of the flow regulating valve and an inlet end of an acid-base composite filter, and an outlet end of the acid-base composite filter is connected with an acidic sensor and an alkaline sensor;
the device also comprises a control unit, wherein the control unit can receive monitoring signals of the acid sensor and the alkaline sensor, obtain a proper flow regulation mode after calculation, control the flow distribution proportion of the outlet of the flow regulation valve in real time, and adjust the gas flow proportion passing through the acid filter and the alkaline filter in real time according to the monitoring signals so as to realize real-time identification and control of the air quality. The device also comprises a pressure sensor arranged between the gas outlet end of the particle filter and the gas inlet end of the flow regulating valve, and the blockage condition of the particle filter is judged according to the monitoring signal of the pressure sensor; thereby ensuring a reliable air supply.
The acidity sensor used in this example was SO2The sensor is alkaline sensor NH3The sensor monitors SO in gas at the outlet end of the acid-base composite filter through the sensor2And NH3SO as to adjust the flow ratio of the gas entering the acid filter and the alkaline filter, thereby realizing the SO in the air2And NH3And identifying and controlling the content in real time.
The flow control valve that the device adopted of this embodiment is the three-way valve, and it contains a gas inlet end and two gas outlet ends, the gas inlet end with particulate filter's gas outlet end is connected, acid filter and alkaline filter are connected respectively to two gas outlet ends, contain the flow ratio of the different exports of the adjustable three-way valve of flow control device in the flow control valve.
The device of the embodiment passes through SO in the using process2Sensor and NH3Sensor monitoring SO in air at gas outlet of acid-base composite filter2And NH3And the monitoring signal is transmitted to the control unit, the control unit analyzes and calculates the monitoring signal to obtain a proper flow regulating mode of the gas outlet of the flow regulating valve, and then the flow regulating valve is controlled to regulate and control in real time, so that the acid and alkali of the air entering the hydrogen fuel cell are identified and controlled in real time.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The device comprises a particle filter and an acid-base composite filter, and is characterized in that the gas outlet end of the particle filter is connected with the gas inlet end of a flow regulating valve, an acid filter and an alkaline filter are connected between the gas outlet end of the flow regulating valve and the gas inlet end of the acid-base composite filter in parallel, and the gas outlet end of the acid-base composite filter is connected with an acid sensor and an alkaline sensor.
2. The apparatus of claim 1, further comprising a control unit, wherein the acidity sensor is connected to the control unit, and wherein the control unit is capable of receiving a monitoring signal from the acidity sensor.
3. The device of claim 2, wherein the alkaline sensor is connected to the control unit, the control unit being capable of receiving a monitoring signal of the alkaline sensor.
4. The device of any of claims 1-3, wherein the acid sensor and the base sensor are connected in series.
5. The apparatus according to any of claims 1-4, wherein the gas inlet end of the flow regulating valve is connected to the gas outlet end of the particulate filter, the flow regulating valve comprising at least two outlet ends;
preferably, the flow regulating valve is a three-way flow regulating valve.
6. The apparatus of claim 5, wherein the flow regulating valve is connected to the control unit, the control unit being capable of controlling the flow distribution to the gas outlet end of the flow regulating valve.
7. The apparatus of any one of claims 1-6, wherein a pressure sensor is disposed between the gas outlet end of the particulate filter and the gas inlet end of the flow regulating valve.
8. The apparatus of any one of claims 1-7, wherein the acidity sensor is SO2A sensor;
preferably, the alkalinity sensor is NH3A sensor.
9. A method for identifying and controlling the gas quality of a cathode air filter of a hydrogen fuel cell, which is characterized by adopting the device as claimed in any one of claims 1 to 8, and the method comprises the steps of monitoring the acidity and the alkalinity of the gas at the outlet of an acid-base composite filter by using an acidity sensor and an alkalinity sensor to obtain an acidity-alkalinity signal, then controlling the outlet end flow distribution of a flow regulating valve according to the acidity-alkalinity signal, and regulating the flow ratio of the gas entering the acidity filter and the alkalinity filter.
10. The method as claimed in claim 9, wherein the acid-base signal enters a control unit, and after the control unit processes the acid-base signal, the control unit controls a flow regulating valve to regulate the flow distribution at the outlet of the flow regulating valve;
preferably, a pressure sensor is arranged between the gas outlet end of the particle filter and the gas inlet end of the flow regulating valve, and the blockage condition of the particle filter is judged through the pressure sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911410571.1A CN111129547A (en) | 2019-12-31 | 2019-12-31 | Identification control device and method for gas quality of cathode air filter of hydrogen fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911410571.1A CN111129547A (en) | 2019-12-31 | 2019-12-31 | Identification control device and method for gas quality of cathode air filter of hydrogen fuel cell |
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