CN110165255A - A kind of fuel battery engines pneumatics control system and method - Google Patents
A kind of fuel battery engines pneumatics control system and method Download PDFInfo
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- CN110165255A CN110165255A CN201910618095.6A CN201910618095A CN110165255A CN 110165255 A CN110165255 A CN 110165255A CN 201910618095 A CN201910618095 A CN 201910618095A CN 110165255 A CN110165255 A CN 110165255A
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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
- H01M8/04104—Regulation of differential pressures
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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
- H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
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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
- H01M8/04992—Processes for controlling fuel cells or fuel cell systems characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
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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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- Automation & Control Theory (AREA)
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- Fuel Cell (AREA)
Abstract
The invention discloses a kind of fuel battery engines pneumatics control system and methods, including air supplying module and pressure control module, air supplying module includes the air compressor machine being sequentially connected, humidifier, fuel cell pile, counterbalance valve and steam-water separator, pressure control module includes the pressure sensor being sequentially connected in series, signal sample circuit, filter circuit, analog/digital conversion circuit and controller, pressure sensor is amperometric sensor, at the air intake of fuel cell pile, the current signal of pressure sensor acquisition successively passes through signal sample circuit, controller processing is transmitted to after filter circuit and analog/digital conversion circuit, controller respectively with air compressor machine and counterbalance valve communication connection.By the joint adjusting and the PID closed-loop control of counterbalance valve to rotational speed of air compressor and back pressure valve opening, so that fuel cell pile pressure at inlet value and system demand pressure setting value deviation reduce, and then the system operation made is more stable.
Description
Technical field
The present invention relates to fuel cell power generating system fields, and in particular to a kind of fuel battery engines pneumatics control system
And method.
Background technique
Fuel cell is the device that a kind of chemical energy by fuel is converted into electric energy, and membrane electrode is fuel battery engines
Core, in the anode of membrane electrode, hydrogen penetrates porous material, and electrochemical reaction occurs on catalyst surface, loses electricity
Son, becomes positively charged ion, and cation can reach the other end cathode of membrane electrode by migrating across proton exchange membrane,
The cathode of membrane electrode, oxygen occur electrochemical reaction in catalyst surface and obtain electronics, formed negative by penetrating porous material
Ion reacts in the cation that anion and the anode tap migration of the formation of cathode terminal come, and reaction generates water.Membrane electrode
The electronics that generated in electrochemical reaction process will occur for both ends with conductive body, be drawn by external circuit, constitute circuit loop.
In order to guarantee chemical reaction in fuel cell pile can continuous-stable carry out, system needs continuously to mention to pile
Core for the air of certain pressure and flow, and fuel battery engines control is that electrochemical reaction occurs for control and oxygen
Reaction condition produces electricl energy, and in order to guarantee the safety and stability oxygen operation of fuel battery engines, oxygen pressure is precisely controlled
Just it is particularly important.
The prior art still has some shortcomings: the control of oxygen pressure at present is all opened loop control, opened loop control actual value
There is relatively large deviation with ideal value；And it cannot oxygen pressure needed for response system real-time, quickly.
Summary of the invention
The present invention provides a kind of fuel battery engines pneumatics control system and method, can be realized closed-loop control oxygen pressure
Power reduces the deviation of actual value and ideal value, improves the precision controlled oxygen pressure, while being enable to respond quickly needed for system
Oxygen pressure.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of fuel battery engines pneumatics control system, including air supplying module and pressure control module, the sky
Gas supplying module includes the air compressor machine being sequentially connected, humidifier, fuel cell pile, counterbalance valve and steam-water separator, the pressure
Power control module includes the pressure sensor being sequentially connected in series, signal sample circuit, filter circuit, analog/digital conversion circuit and control
Device, the pressure sensor is amperometric sensor, at the air intake of fuel cell pile, pressure sensor acquisition
Current signal is successively transmitted to controller processing, controller after signal sample circuit, filter circuit and analog/digital conversion circuit
Respectively with air compressor machine and counterbalance valve communication connection, for controlling the revolving speed of air compressor machine and the aperture of counterbalance valve.
As a preferred embodiment of the above solution, with PID control program in the controller, controller is according to target air pressure
Then the revolving speed of value adjustment air compressor machine carries out PID adjusting by the pressure signal that pressure sensor acquires, after generation PID is adjusted
Instruction, and this is referred to and is sent to counterbalance valve.
The controller is communicated with air compressor machine and counterbalance valve respectively by CAN communication bus as a preferred embodiment of the above solution,
Connection.
A kind of fuel battery engines pneumatics control method, comprising the following steps:
S1, starting air supplying module, allow air to sequentially enter air compressor machine, humidifier, fuel cell pile, and
Electrochemical reaction occurs with hydrogen in fuel cell pile, produces electricl energy；
S2, controller compare the rotational speed of air compressor being arranged on air compressor machine according to current desired target air pressure value
Air compressor machine is adjusted to suitable rotational speed by CAN communication by table；
Collected current fuel cell pile inlet pressure level is transmitted to controller, controller by S3, pressure sensor
According to pressure sensor transmission come pressure information carry out PID adjusting, increase or reduce the aperture of counterbalance valve.
As a preferred embodiment of the above solution, in step s3, controller carries out the pressure signal that pressure sensor transmission comes
Analysis and calculating, via the difference for calculating fuel cell pile entrance actual air pressure value and target air pressure value, according to difference
Value sends an instruction to counterbalance valve by PID control Program Generating aperture control instruction, and then controls actual fuel cell
Pile Inlet air pressure is consistent with target gas phase pressure.
Due to above structure, the beneficial effects of the present invention are:
1, it is adjusted by the joint to rotational speed of air compressor and back pressure valve opening, so that fuel cell pile pressure at inlet value
And system demand pressure setting value deviation reduces, and then keeps system operation more stable；
2, the PID control journey by being arranged in the pressure sensor and controller at fuel cell pile air intake
Sequence realizes the PID closed-loop control of counterbalance valve, further decreases fuel cell pile pressure at inlet value and system demand pressure
The deviation of setting value further improves the stability of system operation；
3, controller is by CAN bus and air compressor machine and counterbalance valve communication connection so that control system adjustment speed faster,
Control precision it is higher so that pressure control module be enable to respond quickly air supplying module needed for air pressure.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.
Fig. 1 is the structural schematic diagram of fuel battery engines pneumatics control system of the present invention；
Fig. 2 is the operation principle schematic diagram of fuel battery engines pneumatics control system of the present invention；
Fig. 3 is the work flow diagram of fuel battery engines pneumatics control method of the present invention.
Specific embodiment
Below in conjunction with attached drawing of the invention, technical solution of the present invention is clearly and completely described.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
It please refers to Fig.1 to Fig.3, the present invention provides a kind of fuel battery engines pneumatics control system, including air supply
Module and pressure control module, the air supplying module include the air compressor machine 101 being sequentially connected, humidifier 102, fuel cell
Pile 104, counterbalance valve (electronic throttle) 105 and steam-water separator 106；The pressure control module includes the pressure being sequentially connected in series
Force snesor 201, signal sample circuit 202, filter circuit 203, analog/digital conversion circuit 204 and controller 205；The pressure
Sensor 201 is amperometric sensor, at the air intake of fuel cell pile 104, the electricity of the acquisition of pressure sensor 201
Stream signal is successively transmitted to controller 205 after signal sample circuit 202, filter circuit 203 and analog/digital conversion circuit 204
Processing, controller 205 by CAN communication bus respectively with 105 communication connection of air compressor machine 101 and counterbalance valve, for controlling pneumatics
The revolving speed of machine 101 and the aperture of counterbalance valve 105.
With PID control program in the controller 205, rotational speed of air compressor table is installed on air compressor machine, controller 205
According to target air pressure value, rotational speed of air compressor table adjustment air compressor machine 101 is compareed to suitable rotational speed, then passes through pressure sensor
The pressure signal of 201 acquisitions carries out PID adjusting, generates the instruction after PID is adjusted, and this is referred to and is sent to counterbalance valve 105.
A kind of fuel battery engines pneumatics control method, comprising the following steps:
S1, starting air supplying module, allow air to sequentially enter air compressor machine, humidifier, fuel cell pile, and
Electrochemical reaction occurs with hydrogen in fuel cell pile, produces electricl energy；
S2, controller compare the rotational speed of air compressor being arranged on air compressor machine according to current desired target air pressure value
Air compressor machine is adjusted to suitable rotational speed by CAN communication by table；
Collected current fuel cell pile inlet pressure level is transmitted to controller, controller by S3, pressure sensor
According to pressure sensor transmission come pressure information carry out PID adjusting, increase or reduce the aperture of counterbalance valve.
In step s3, the pressure signal that controller carrys out pressure sensor transmission is analyzed and is calculated, via calculating
The difference of fuel cell pile entrance actual air pressure value and target air pressure value, it is raw by PID control program according to difference
At aperture control instruction, and send an instruction to counterbalance valve, so control actual fuel cell pile Inlet air pressure with
Target gas phase pressure is consistent.
Working principle is as follows:
When fuel battery engines starting, air enters air compressor machine 101, becomes have one after the pressurization of air compressor machine 101
The gas of constant flow and pressure subsequently enters humidifier 102, and 102 pairs of the humidifier dry gas entered in it humidify, wet
Profit air enters in fuel cell pile 104, and electrochemical reaction occurs for the oxygen in air and hydrogen, and produces electricl energy, fuel
Tail gas after battery stack 104 is reacted goes out heap, the back pressure being set at 104 offgas outlet of fuel cell pile with steam together
Enter steam-water separator 106 after valve 105, gas is separated from water by steam-water separator 106, is respectively used to the circulation benefit of fuel cell
With.
In the process, current mode pressure sensor 201 acquires the electric current letter at 104 air intake of fuel cell pile
Number, and pass through signal sample circuit 202, current signal is converted into voltage signal, is turned using filter circuit 203 and analog/digital
After changing circuit 204, it is transmitted to the processing of controller 205, for controller 205 according to current desired target air pressure value, control is empty
Air compressor machine 101 is adjusted by CAN communication and arrives suitable rotational speed by press revolution counter, is then acquired in real time to pressure sensor 201
Pressure signal is analyzed and is calculated, by 104 entrance actual air pressure value of fuel cell pile and target air pressure value into
Row comparison, according to the size of difference by PID control Program Generating aperture control instruction, and sends an instruction to counterbalance valve 105,
The aperture of counterbalance valve 105 is adjusted, and then controls actual fuel cell pile Inlet air pressure and target air pressure phase one
It causes, to guarantee to give fuel cell pile steadily oxygen.
In the present embodiment, model DG2101-A- (- 0.1~0.2)/A of pressure sensor, controller can use type
The chip model of number MC9S12XEP100, the model YFTC-0110 of PID regulator, signal sample circuit use LM2902,
Filter circuit uses LC filter circuit, is the prior art, air compressor machine, humidifier, fuel cell pile, counterbalance valve, steam-water separation
Device is the prior art, is not repeated its internal structure in the present embodiment.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of fuel battery engines pneumatics control system, it is characterised in that: control mould including air supplying module and pressure
Block, the air supplying module include the air compressor machine being sequentially connected, humidifier, fuel cell pile, counterbalance valve and steam-water separation
Device, the pressure control module include the pressure sensor being sequentially connected in series, signal sample circuit, filter circuit, analog/digital conversion electricity
Road and controller, the pressure sensor is amperometric sensor, at the air intake of fuel cell pile, pressure sensing
The current signal of device acquisition is successively transmitted at controller after signal sample circuit, filter circuit and analog/digital conversion circuit
Reason, controller respectively with air compressor machine and counterbalance valve communication connection, for controlling the revolving speed of air compressor machine and the aperture of counterbalance valve.
2. fuel battery engines pneumatics control system according to claim 1, it is characterised in that: write in the controller
There is PID control program, controller adjusts the revolving speed of air compressor machine according to target air pressure value, then acquires by pressure sensor
Pressure signal carry out PID adjusting, generate the instruction after PID is adjusted, and this referred to and is sent to counterbalance valve.
3. fuel battery engines pneumatics control system according to claim 2, it is characterised in that: the controller passes through
CAN communication bus respectively with air compressor machine and counterbalance valve communication connection.
4. a kind of fuel battery engines pneumatics control method according to claim 3, it is characterised in that: including following step
It is rapid:
S1, starting air supplying module, allow air to sequentially enter air compressor machine, humidifier, fuel cell pile, and firing
Expect that electrochemical reaction occurs with hydrogen in battery stack, produces electricl energy；
It is logical to compare the rotational speed of air compressor table being arranged on air compressor machine according to current desired target air pressure value for S2, controller
It crosses CAN communication and air compressor machine is adjusted to suitable rotational speed；
Collected current fuel cell pile inlet pressure level is transmitted to controller by S3, pressure sensor, controller according to
The pressure information that pressure sensor transmission comes carries out PID adjusting, increases or reduces the aperture of counterbalance valve.
5. fuel battery engines pneumatics control method according to claim 4, it is characterised in that: in step s3, control
The pressure signal that device processed carrys out pressure sensor transmission is analyzed and is calculated, practical empty via fuel cell pile entrance is calculated
The difference of air pressure force value and target air pressure value, according to difference by PID control Program Generating aperture control instruction, and will instruction
It is sent to counterbalance valve, and then it is consistent with target gas phase pressure to control actual fuel cell pile Inlet air pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618095.6A CN110165255B (en) | 2019-07-10 | 2019-07-10 | Air pressure control system and method for fuel cell engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618095.6A CN110165255B (en) | 2019-07-10 | 2019-07-10 | Air pressure control system and method for fuel cell engine |
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| CN110165255A true CN110165255A (en) | 2019-08-23 |
| CN110165255B CN110165255B (en) | 2023-05-26 |
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| CN201910618095.6A Active CN110165255B (en) | 2019-07-10 | 2019-07-10 | Air pressure control system and method for fuel cell engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111628196A (en) * | 2019-11-08 | 2020-09-04 | 北京亿华通科技股份有限公司 | Air system control method of fuel cell |
| CN112233405A (en) * | 2020-10-20 | 2021-01-15 | 河北匠心智联软件技术有限公司 | Internet of things acquisition module with ammeter |
| CN112622701A (en) * | 2020-12-29 | 2021-04-09 | 武汉格罗夫氢能汽车有限公司 | Optimization system and method for realizing stable operation of water inlet and air inlet pressure difference of hydrogen energy automobile |
| CN112635795A (en) * | 2020-12-21 | 2021-04-09 | 东风汽车集团有限公司 | Fuel cell air pressure adjusting device and system |
| CN113097533A (en) * | 2021-03-30 | 2021-07-09 | 上海电气集团股份有限公司 | Air supply system of fuel cell |
| CN114914482A (en) * | 2022-06-28 | 2022-08-16 | 大洋电机燃料电池科技(中山)有限公司 | Self-adjusting electronic back pressure valve, fuel cell system and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111628196A (en) * | 2019-11-08 | 2020-09-04 | 北京亿华通科技股份有限公司 | Air system control method of fuel cell |
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| CN112622701A (en) * | 2020-12-29 | 2021-04-09 | 武汉格罗夫氢能汽车有限公司 | Optimization system and method for realizing stable operation of water inlet and air inlet pressure difference of hydrogen energy automobile |
| CN113097533A (en) * | 2021-03-30 | 2021-07-09 | 上海电气集团股份有限公司 | Air supply system of fuel cell |
| CN114914482A (en) * | 2022-06-28 | 2022-08-16 | 大洋电机燃料电池科技(中山)有限公司 | Self-adjusting electronic back pressure valve, fuel cell system and control method |
| CN114914482B (en) * | 2022-06-28 | 2024-04-26 | 大洋电机燃料电池科技(中山)有限公司 | Self-regulating electronic back pressure valve, fuel cell system and control method |
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