CN109524688A - Pem fuel cell stack hydrogen injection valve driving control system and method - Google Patents
Pem fuel cell stack hydrogen injection valve driving control system and method Download PDFInfo
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- CN109524688A CN109524688A CN201811425510.8A CN201811425510A CN109524688A CN 109524688 A CN109524688 A CN 109524688A CN 201811425510 A CN201811425510 A CN 201811425510A CN 109524688 A CN109524688 A CN 109524688A
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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
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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
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
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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
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
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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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- Manufacturing & Machinery (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a kind of pem fuel cell stack hydrogen injection valve driving control systems, including the sensor, processor and actuator successively communicated to connect；And a kind of pem fuel cell stack hydrogen injection valve driving method, include the following steps: S1, using the parameter signal of sensor acquisition fuel cell pack；S2, the parameter signal inputting hydrogen system control module by acquisition export hydrogen injection amount and last row valve opening state state value；S3, last row valve opening state state value is inputted into injection cycle module, exports hydrogen injection periodic quantity；S4, hydrogen injection amount and hydrogen injection periodic quantity are inputted into injection pulse width module, exports hydrogen injection pwm value；S5, last row valve opening state state value, hydrogen injection periodic quantity and hydrogen injection pwm value are inputted to drive module, and actuator is controlled according to it；The present invention solves the problems, such as that hydrogen air supply system pressure oscillation of the existing technology is larger and can not work long hours.
Description
Technical field
The invention belongs to field of fuel cell technology, and in particular to a kind of pem fuel cell stack hydrogen injection
Valve driving control system and method.
Background technique
A kind of power source of the fuel cell as cleanliness without any pollution, the increasingly attention by each automobile vendor.Due to matter
Proton exchange film fuel cell has many advantages, such as that operating temperature is low, corollary equipment is few, start and stop are quick, thus is widely used in automobile-used
System.
The battery pile of Proton Exchange Membrane Fuel Cells is by multiple single battery groups at main component includes anode, cathode and matter
The systems such as proton exchange.In anode oxidation reaction occurs for hydrogen, and in cathode reduction reaction occurs for air.It is normally transported for guarantee system
Turn, anode and cathode require to keep certain supply gas pressure, therefore anode and cathode require specific air supply system.Anode
Air supply system be mainly made of hydrogen cylinder and the mechanism of decompressor at different levels, the afterbody of the mechanism of decompressor is usually one controllable
Pressure adjustment unit part can adjust in time the supply gas pressure of hydrogen according to operating condition.Injection valve has response quickly, precision height etc. excellent
Point, therefore often it is used as the pressure regulating part of hydrogen gas system.
The hydrogen air supply system of anode of fuel cell, in addition to pressure-regulating valve, end is standing a last row valve, discontinuity
Opening, for draining.When hydrogen tail valve opens or closes, hydrogen air supply system flow passage resistance force of waterproof quickly changes, pressure
Corresponding big ups and downs.Therefore to inhibit last row valve to unlatch and close bring pressure oscillation, guarantee the pressure of hydrogen air supply system
Power is steady, and injection valve is often needed with the demand for control of higher injection frequency response controller, hydrogen needed for fast, accurately spraying
Gas.But the action frequency of injection valve is limited, higher injection frequency can also shorten the normal working hours of injection valve, mention
The probability of malfunction of high injection valve, thus influence the service life of fuel cell pack.Injection valve is reduced to extend the injection valve working time
Injection frequency, often lead to that hydrogen air supply system pressure oscillation is larger, and especially in last row valve events, hydrogen injection amount is difficult to
Timely compensation pressure fluctuation, to cause violent pressure oscillations.
To sum up, high injection frequency and long working time needed for combining pressure control are difficult under the prior art.
Summary of the invention
For above-mentioned deficiency in the prior art, the present invention propose it is a kind of take into account pressure control needed for high injection frequency with
The pem fuel cell stack of long working time hydrogen injection valve driving control system and method, for solving existing skill
The problem of pressure oscillation of hydrogen air supply system is larger existing for art and can not work long hours.
In order to achieve the above object of the invention, the technical solution adopted by the present invention are as follows:
A kind of pem fuel cell stack hydrogen injection valve driving control system, including the biography successively communicated to connect
Sensor, processor and actuator.
Further, processor includes hydrogen gas system control module, injection pulse width module, injection cycle module and driving
Module；
The input terminal of hydrogen gas system control module and sensor communicate to connect, and its output end respectively with injection cycle module
It is communicated to connect with injection pulse width module；
The input terminal and injection cycle module of injection pulse width module communicate to connect；
The input terminal of drive module is logical with hydrogen gas system control module, injection pulse width module and injection cycle module respectively
Letter connection, and its output end and actuator communicate to connect.
A kind of pem fuel cell stack hydrogen injection valve driving method, pem fuel cell stack hydrogen
Gas jet valve driving control system includes sensor, processor and actuator, and processor includes hydrogen gas system control module, spray
Penetrate pulsewidth module, injection cycle module and drive module；Pem fuel cell stack hydrogen injection valve driving method,
Include the following steps:
S1: the parameter signal of sensor acquisition fuel cell pack is used；
S2: the parameter signal inputting hydrogen system control module that will be acquired in step S1 exports hydrogen injection amount and last row
Valve opening state state value；
S3: last row valve opening state state value is inputted into injection cycle module, exports hydrogen injection periodic quantity；
S4: hydrogen injection amount and hydrogen injection periodic quantity are inputted into injection pulse width module, export hydrogen injection pwm value；
S5: inputting drive module for last row valve opening state state value, hydrogen injection periodic quantity and hydrogen injection pwm value, and
Actuator is controlled according to it.
Further, in step S3, injection cycle module, which is provided with, opens timer, closes timer, time limit value, the
One hydrogen injection periodic quantity and the second hydrogen injection periodic quantity.
Further, the method for exporting hydrogen injection periodic quantity, includes the following steps:
S3-1: when last row valve is opened, 0 is set using when opening timer and by timer is closed；
S3-2: when last row valve is closed, 0 is set using when closing timer and by timer is opened；
S3-3: according to the count value and preset time limit value for opening timer and closing timer, judge whether to accord with
It closes and requires, if then exporting the second hydrogen injection periodic quantity, otherwise export the first hydrogen injection periodic quantity.
Further, in step S3-3, judgment formula are as follows:
In formula, Ton、ToffIt respectively opens timer and closes the count value of timer；T is preset time limit value；
Meet any of the above-described one, then output meets the requirements.
The invention has the benefit that
The invention proposes pem fuel cell stack hydrogen injection valve driving control systems and method, in hydrogen
During air supply system pressure oscillation is biggish, during especially last row valve opens and closes, using higher injection frequency
Rate controls hydrogen injection valve, obtains preferable pressure control effect；Smaller in hydrogen air supply system pressure oscillation, i.e., hydrogen sprays
The amount of penetrating more smoothly during, using lower injection frequency control hydrogen injection valve, extend the working time of injection valve.
Detailed description of the invention
Fig. 1 is pem fuel cell stack hydrogen injection valve driving control system structural block diagram；
Fig. 2 is pem fuel cell stack hydrogen injection valve driving method flow chart；
Fig. 3 is the method flow diagram for exporting hydrogen injection periodic quantity；
Fig. 4 is the actual application figure of driving method.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
As shown in Figure 1, a kind of pem fuel cell stack hydrogen injection valve driving control system, including successively lead to
Believe sensor, processor and the actuator of connection；
Processor includes hydrogen gas system control module, injection pulse width module, injection cycle module and drive module；
The input terminal of hydrogen gas system control module and sensor communicate to connect, and its output end respectively with injection cycle module
It is communicated to connect with injection pulse width module；
The input terminal and injection cycle module of injection pulse width module communicate to connect；
The input terminal of drive module is logical with hydrogen gas system control module, injection pulse width module and injection cycle module respectively
Letter connection, and its output end and actuator communicate to connect.
A kind of pem fuel cell stack hydrogen injection valve driving method, pem fuel cell stack hydrogen
Gas jet valve driving control system includes sensor, processor and actuator, and processor includes hydrogen gas system control module, spray
Penetrate pulsewidth module, injection cycle module and drive module；Pem fuel cell stack hydrogen injection valve driving method,
As shown in Fig. 2, including the following steps:
S1: the parameter signal of sensor acquisition fuel cell pack is used；
Parameter signal is the state value of fuel cell pack, including hydrogen gas system sprays pressure, air system admission pressure, sky
Gas system charge flow rate and cooling water temperature；
S2: the parameter signal inputting hydrogen system control module that will be acquired in step S1 exports hydrogen injection amount and last row
Valve opening state state value；
S3: last row valve opening state state value is inputted into injection cycle module, exports hydrogen injection periodic quantity；
Injection cycle module be provided with open timer, close timer, time limit value, the first hydrogen injection periodic quantity with
And the second hydrogen injection periodic quantity；The method for exporting hydrogen injection periodic quantity, as shown in figure 3, including the following steps:
S3-1: when last row valve is opened, 0 is set using when opening timer and by timer is closed；
S3-2: when last row valve is closed, 0 is set using when closing timer and by timer is opened；
S3-3: according to the count value and preset time limit value for opening timer and closing timer, judge whether to accord with
It closes and requires, if then exporting the second hydrogen injection periodic quantity, otherwise export the first hydrogen injection periodic quantity.
Further, in step S3-3, judgment formula are as follows:
In formula, Ton、ToffIt respectively opens timer and closes the count value of timer；T is preset time limit value；
Meet any of the above-described one, then output meets the requirements；
S4: hydrogen injection amount and hydrogen injection periodic quantity are inputted into injection pulse width module, export hydrogen injection pwm value；
S5: inputting drive module for last row valve opening state state value, hydrogen injection periodic quantity and hydrogen injection pwm value, and
Actuator is controlled according to it.
In the present embodiment, the actual application of driving method is as shown in figure 4, include the following moment:
The A moment when last row valve is opened, opens timer and starts timing, closes timer and set 0, meet 0 < TonThe item of < T
Part, output hydrogen injection periodic quantity are the second preset hydrogen injection periodic quantity；
The B moment starts timer and exceeds preset time limit value, is unsatisfactory forOne any item
Part, output hydrogen injection periodic quantity are the first preset hydrogen injection periodic quantity；
The C moment when last row valve is closed, closes timer and starts timing, opens timer and set 0, meet 0 < ToffThe item of < T
Part, output injection cycle become the second preset hydrogen injection periodic quantity；
The D moment closes timer and exceeds preset time limit value, is unsatisfactory forOne any item
Part, output hydrogen injection periodic quantity are the first hydrogen injection periodic quantity.
After applying the present invention, it by changing the injection cycle of injection valve, can be protected while extending the injection valve working time
The pressure control effect of hydrogen air supply system when demonstrate,proving last row valve events.
The invention has the benefit that
The invention proposes pem fuel cell stack hydrogen injection valve driving control systems and method, in hydrogen
During air supply system pressure oscillation is biggish, during especially last row valve opens and closes, using higher injection frequency
Rate controls hydrogen injection valve, obtains preferable pressure control effect；Smaller in hydrogen air supply system pressure oscillation, i.e., hydrogen sprays
The amount of penetrating more smoothly during, using lower injection frequency control hydrogen injection valve, extend the working time of injection valve.
Claims (6)
1. a kind of pem fuel cell stack hydrogen injection valve driving control system, which is characterized in that including successively leading to
Believe sensor, processor and the actuator of connection.
2. pem fuel cell stack as described in claim 1 hydrogen injection valve driving control system, feature exist
In the processor includes hydrogen gas system control module, injection pulse width module, injection cycle module and drive module；
The input terminal of the hydrogen gas system control module and sensor communicate to connect, and its output end respectively with injection cycle module
It is communicated to connect with injection pulse width module；
The input terminal and injection cycle module of the injection pulse width module communicate to connect；
The input terminal of the drive module is logical with hydrogen gas system control module, injection pulse width module and injection cycle module respectively
Letter connection, and its output end and actuator communicate to connect.
3. a kind of pem fuel cell stack hydrogen injection valve driving method, which is characterized in that the proton exchange membrane
Fuel cell pack hydrogen injection valve driving control system includes sensor, processor and actuator, and the processor includes
Hydrogen gas system control module, injection pulse width module, injection cycle module and drive module；The Proton Exchange Membrane Fuel Cells
Heap hydrogen injection valve driving method, includes the following steps:
S1: the parameter signal of sensor acquisition fuel cell pack is used；
S2: the parameter signal inputting hydrogen system control module that will be acquired in step S1 exports hydrogen injection amount and last row valve is opened
Open state value；
S3: last row valve opening state state value is inputted into injection cycle module, exports hydrogen injection periodic quantity；
S4: hydrogen injection amount and hydrogen injection periodic quantity are inputted into injection pulse width module, export hydrogen injection pwm value；
S5: by last row valve opening state state value, hydrogen injection periodic quantity and hydrogen injection pwm value input drive module, and according to
It controls actuator.
4. pem fuel cell stack as claimed in claim 3 hydrogen injection valve driving method, which is characterized in that institute
It states in step S3, injection cycle module, which is provided with, opens timer, closes timer, time limit value, the first hydrogen injection period
Value and the second hydrogen injection periodic quantity.
5. pem fuel cell stack as claimed in claim 4 hydrogen injection valve driving method, which is characterized in that defeated
The method of hydrogen injection periodic quantity out, includes the following steps:
S3-1: when last row valve is opened, 0 is set using when opening timer and by timer is closed；
S3-2: when last row valve is closed, 0 is set using when closing timer and by timer is opened；
S3-3: according to the count value and preset time limit value for opening timer and closing timer, judge whether to conform to
It asks, if then exporting the second hydrogen injection periodic quantity, otherwise exports the first hydrogen injection periodic quantity.
6. pem fuel cell stack as claimed in claim 5 hydrogen injection valve driving method, which is characterized in that institute
It states in step S3-3, judgment formula are as follows:
In formula, Ton、ToffIt respectively opens timer and closes the count value of timer；T is preset time limit value；
Meet any of the above-described one, then output meets the requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425510.8A CN109524688B (en) | 2018-11-27 | 2018-11-27 | Hydrogen injection valve driving control system and method for proton exchange membrane fuel cell stack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425510.8A CN109524688B (en) | 2018-11-27 | 2018-11-27 | Hydrogen injection valve driving control system and method for proton exchange membrane fuel cell stack |
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| CN109524688A true CN109524688A (en) | 2019-03-26 |
| CN109524688B CN109524688B (en) | 2021-11-02 |
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| CN109524688B (en) | 2021-11-02 |
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