CN114976143B - Fuel cell system control method, device, electronic equipment and storage medium - Google Patents

Fuel cell system control method, device, electronic equipment and storage medium Download PDF

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CN114976143B
CN114976143B CN202210744604.1A CN202210744604A CN114976143B CN 114976143 B CN114976143 B CN 114976143B CN 202210744604 A CN202210744604 A CN 202210744604A CN 114976143 B CN114976143 B CN 114976143B
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fuel cell
measurement
cell system
chip
voltage
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CN114976143A (en
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赵兴旺
李飞强
张国强
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Beijing Sinohytec Co Ltd
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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
    • 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
    • H01M8/04537—Electric variables
    • H01M8/04544—Voltage
    • H01M8/04552—Voltage of the individual fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—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
    • H01M8/04537—Electric variables
    • H01M8/04634—Other electric variables, e.g. resistance or impedance
    • H01M8/04641—Other electric variables, e.g. resistance or impedance of the individual fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04858—Electric variables
    • H01M8/04865—Voltage
    • H01M8/04873—Voltage of the individual fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04858—Electric variables
    • H01M8/04949—Electric variables other electric variables, e.g. resistance or impedance
    • H01M8/04951—Electric variables other electric variables, e.g. resistance or impedance of the individual fuel cell
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

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Abstract

The invention provides a fuel cell system control method, a fuel cell system control device, an electronic device and a storage medium. Wherein the fuel cell system control method, the fuel cell is divided into a plurality of partitions, each partition includes a plurality of monoliths, includes: acquiring the voltage of a single chip of the fuel cell, and obtaining the standard deviation of the single chip voltage based on the voltage of the single chip; judging whether the standard deviation of the single-chip voltage exceeds a set threshold value; if the standard deviation contribution degree exceeds the set threshold value, calculating the standard deviation contribution degree of the single-chip voltage, and sequencing the single chips based on the contribution degree; selecting single sheets according to the sequence, and marking the selected single sheets to obtain marked single sheets; judging whether the marked singlechips belong to the same partition; measuring the single chip by adopting a set measurement strategy based on the judgment result; and controlling the fuel cell system according to the measurement result. The purposes of high integration level and low cost are realized.

Description

Fuel cell system control method, device, electronic equipment and storage medium
Technical Field
The invention belongs to the technical field of new energy, and particularly relates to a fuel cell system control method, a device, electronic equipment and a storage medium.
Background
The hydrogen energy fuel cell automobile is a new energy automobile with wide development prospect, and has the advantages of short hydrogenation time and long driving range. The fuel cell system generally comprises a fuel cell stack and peripheral hydrogen, air, cooling and other component systems, wherein the stack comprises a proton exchange membrane, a catalyst layer, a gas diffusion layer, a bipolar plate and the like, and since the theoretical voltage of 1 sheet is 1.23V, high-power output is generally realized by parallel connection of hundreds of sheets. The management of the hydrothermal state of a fuel cell stack is an industrial problem, and in the running process of a system, the problems of film drying, flooding, gas shortage and the like are important reasons for the performance, durability and economy of the stack. It is common practice to adjust the control parameters and strategies according to the falling amplitude and voltage threshold of the single-chip voltage, but the adjustment is usually adopted after the single-chip voltage is unstable due to the problems, and has great delay. The alternating current impedance technology is used as a tool capable of directly monitoring the conductivity of the membrane, so that the real-time observation of the water content of the membrane can be realized, but as the galvanic pile is usually 300-400 pieces, the impedance acquisition is carried out on each piece of single piece in real time, a large number of acquisition circuits, signal processing chips and the like are needed, and the cost is high. The prior art considers that the control is performed by using a single-chip voltage threshold, for example, the lowest single-chip voltage is less than 300mV (the normal single-chip voltage is generally between 500 and 1000 mV), but after the single-chip voltage is detected to be less than 300mV, the control measures are adopted to be lagged; to overcome the hysteresis problem, the impedance value of each single chip is detected in real time by using the ac impedance, but the volume and cost of hardware are high due to the acquisition and signal processing circuits required for impedance measurement.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a control method, a device, electronic equipment and a storage medium of a fuel cell system, which at least partially solve the problems of low integration level and high cost in the prior art.
In a first aspect, an embodiment of the present disclosure provides a fuel cell system control method, in which a fuel cell is divided into a plurality of segments, each segment including a plurality of individual pieces, including:
acquiring the voltage of a single chip of the fuel cell, and obtaining the standard deviation of the single chip voltage based on the voltage of the single chip;
judging whether the standard deviation of the single-chip voltage exceeds a set threshold value;
if the standard deviation contribution degree exceeds the set threshold value, calculating the standard deviation contribution degree of the single-chip voltage, and sequencing the single chips based on the contribution degree;
selecting single sheets according to the sequence, and marking the selected single sheets to obtain marked single sheets;
judging whether the marked singlechips belong to the same partition;
measuring the single chip by adopting a set measurement strategy based on the judgment result;
and controlling the fuel cell system according to the measurement result.
Optionally, the contribution degree calculation formula is:
Figure DEST_PATH_IMAGE002
，
m is the number of single sheets, and the number of the single sheets is equal to the number of the single sheets,
Figure DEST_PATH_IMAGE004
for the voltage value of the ith chip, +.>
Figure DEST_PATH_IMAGE006
For the average value of all monolithic voltages, +.>
Figure DEST_PATH_IMAGE008
And->
Figure DEST_PATH_IMAGE010
Is constant and->
Figure 865397DEST_PATH_IMAGE008
And->
Figure 126614DEST_PATH_IMAGE010
No more than m.
Optionally, selecting the singlechips according to the sorting, and marking the selected singlechips to obtain marked singlechips, including:
selecting the single sheets of n before sequencing, and marking the single sheets of n before sequencing.
Optionally, n is not greater than the number of partitions.
Optionally, measuring the single chip with a set measurement policy based on the determination result includes:
if the marking singlechips belong to the same partition, synchronously measuring the marking singlechips; the synchronous measurement method comprises impedance measurement;
if the marked singlechips do not belong to the same partition, carrying out polling measurement on the marked singlechips, and sequencing the polling measurement according to the contribution degree; measurement methods of synchronous measurement or polling measurement include impedance measurement.
Optionally, the impedance measurement comprises a high frequency impedance and/or a low frequency impedance.
Optionally, controlling the fuel cell system according to the measurement result includes:
the single-chip high-frequency impedance is higher, so that the operating water temperature of the electric pile is reduced or the air flow is reduced;
the low-frequency impedance of the single chip is higher, so that the operating water temperature of the electric pile is improved or the air flow is improved.
In a second aspect, the embodiments of the present disclosure also provide a fuel cell system control apparatus, a fuel cell being divided into a plurality of segments, each segment including a plurality of individual pieces, including:
the standard deviation module is used for acquiring the voltage of the single chip of the fuel cell and obtaining the standard deviation of the single chip voltage based on the voltage of the single chip;
the threshold judging module is used for judging whether the standard deviation of the single-chip voltage exceeds a set threshold;
a contribution module, for calculating standard deviation contribution of the single-chip voltage if the contribution exceeds a set threshold, and sequencing the single chips based on the contribution;
the marking module is used for selecting the single sheets according to the sequence and marking the selected single sheets to obtain marked single sheets;
the partition judging module is used for judging whether the marked singlechips belong to the same partition;
the measurement module is used for measuring the single chip by adopting a set measurement strategy based on the judgment result;
and the control module is used for controlling the fuel cell system according to the measurement result.
In a third aspect, embodiments of the present disclosure further provide an electronic device, including:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the fuel cell system control method of any one of the first aspects.
In a fourth aspect, the presently disclosed embodiments also provide a computer-readable storage medium storing computer instructions for causing a computer to execute the fuel cell system control method of any one of the first aspects.
According to the fuel cell system control method, the device, the electronic equipment and the storage medium, the electric pile singlechips are partitioned, the partition can share the impedance acquisition resources to the greatest extent, abnormal singlechips are screened according to the standard deviation of the electric pile singlechips and the contribution degree of the singlechips, impedance measurement is implemented according to screening results, the working state of the system is timely adjusted, each singlechip does not need to be subjected to impedance acquisition, and hardware equipment is reduced, so that the aims of high integration level and low cost are achieved.
Drawings
The foregoing and other objects, features and advantages of the disclosure will be apparent from the following more particular descriptions of exemplary embodiments of the disclosure as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the disclosure.
FIG. 1 is a schematic diagram of voltage division of a fuel cell stack provided by an embodiment of the present disclosure;
fig. 2 is a flowchart of a control method of a fuel cell system according to an embodiment of the present disclosure;
fig. 3 is a schematic block diagram of a control device of a fuel cell system according to an embodiment of the present disclosure;
fig. 4 is a schematic block diagram of an electronic device according to an embodiment of the disclosure.
Detailed Description
Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
It should be appreciated that the following specific embodiments of the disclosure are described in order to provide a better understanding of the present disclosure, and that other advantages and effects will be apparent to those skilled in the art from the present disclosure. It will be apparent that the described embodiments are merely some, but not all embodiments of the present disclosure. The disclosure may be embodied or practiced in other different specific embodiments, and details within the subject specification may be modified or changed from various points of view and applications without departing from the spirit of the disclosure. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concepts of the disclosure by way of illustration, and only the components related to the disclosure are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
For ease of understanding, as shown in fig. 1, the present embodiment discloses a control method of a fuel cell system, in which a fuel cell is divided into a plurality of segments, each of which includes a plurality of individual pieces, and in a specific example, the voltage of a fuel cell stack is divided into 3 segments in total, each of which includes an equal number of individual pieces. Specifically, for example, a stack of 300 sheets, partition 1 contains the first 100 sheets; partition 2, comprising middle 100 slices; partition 3, contains the back 100 tiles. The number of singlets contained in each partition may also be unequal, such as partition 1 containing the top 101 tiles; partition 2, comprising middle 104 slices; partition 3, contains the back 95 tiles. Each partition corresponds to a group of alternating current impedance acquisition circuits and signal processing circuits, so that three voltage impedance measurement tasks can be processed simultaneously. The control method comprises the following steps:
acquiring the voltage of a single chip of the fuel cell, and obtaining the standard deviation of the single chip voltage based on the voltage of the single chip;
judging whether the standard deviation of the single-chip voltage exceeds a set threshold value;
if the standard deviation contribution degree exceeds the set threshold value, calculating the standard deviation contribution degree of the single-chip voltage, and sequencing the single chips based on the contribution degree;
selecting single sheets according to the sequence, and marking the selected single sheets to obtain marked single sheets;
judging whether the marked singlechips belong to the same partition;
measuring the single chip by adopting a set measurement strategy based on the judgment result;
and controlling the fuel cell system according to the measurement result.
Optionally, the contribution degree calculation formula is:
Figure 61072DEST_PATH_IMAGE002
，
m is the number of single sheets, and the number of the single sheets is equal to the number of the single sheets,
Figure 116753DEST_PATH_IMAGE004
for the voltage value of the ith chip, +.>
Figure 933399DEST_PATH_IMAGE006
For the average value of all monolithic voltages, +.>
Figure 998307DEST_PATH_IMAGE008
And->
Figure 584009DEST_PATH_IMAGE010
Is constant and->
Figure 76170DEST_PATH_IMAGE008
And->
Figure 583375DEST_PATH_IMAGE010
No more than m.
Optionally, selecting the singlechips according to the sorting, and marking the selected singlechips to obtain marked singlechips, including:
selecting the single sheets of n before sequencing, and marking the single sheets of n before sequencing.
Optionally, n is not greater than the number of partitions. In a specific example, if the number of partitions is 3, the value of n may be 1, 2, 3, or the like.
Optionally, measuring the single chip with a set measurement policy based on the determination result includes:
if the marking singlechips belong to the same partition, synchronously measuring the marking singlechips; the synchronous measurement method comprises impedance measurement;
if the marked singlechips do not belong to the same partition, polling measurement is carried out on the marked singlechips, the polling measurement is ordered according to the contribution degree, if the contribution degree of 2 singlechips is 8 and 7 respectively, when polling measurement is carried out, the singlechips with the contribution degree of 8 are measured firstly, and then the singlechips with the contribution degree of 7 are measured. Measurement methods of synchronous measurement or polling measurement include impedance measurement.
Optionally, the impedance measurement comprises a high frequency impedance and/or a low frequency impedance.
Optionally, controlling the fuel cell system according to the measurement result includes:
the single-chip high-frequency impedance is higher, so that the operating water temperature of the electric pile is reduced or the air flow is reduced;
the low-frequency impedance of the single chip is higher, so that the operating water temperature of the electric pile is improved or the air flow is improved.
In one specific example, as shown in fig. 2:
s01: starting;
s02: calculating the standard deviation of the single-chip voltage of the fuel cell;
s03: judging whether the standard deviation exceeds a threshold value k, wherein the threshold value k can be obtained according to experimental calibration, and k can be 20mV; specifically, the standard deviation is an important parameter for evaluating the internal state of the pile, and compared with the control according to the indexes such as the voltage threshold value being smaller than 300mV, the abnormal single chip can be found in advance.
S04: calculating the contribution degree of the single-chip standard deviation, and sequencing; specifically, the degree of contribution
Figure 186395DEST_PATH_IMAGE002
Wherein m represents the number of single sheets of the galvanic pile, 1.ltoreq.o ≡>
Figure 892183DEST_PATH_IMAGE008
≤m，1≤/>
Figure 492928DEST_PATH_IMAGE010
≤m，/>
Figure 290026DEST_PATH_IMAGE004
Represents->
Figure 696737DEST_PATH_IMAGE010
Voltage value of slice, i.e.)>
Figure DEST_PATH_IMAGE011
Representing the average of all monolithic voltages;
s05: selecting a single chip with the contribution degree of front n, determining the single chip number to be set as a marked single chip, and implementing impedance acquisition; in particular, to
Figure DEST_PATH_IMAGE013
Sequencing, namely acquiring a single chip with a front contribution degree, and setting the single chip as a marked single chip, wherein n can be selected according to actual conditions, for example, n can be less than or equal to the number of impedance partitions;
s06: judging that the mark single sheets belong to the same partition;
s07: synchronous measurement, specifically, the marking singlechips belong to different partitions, so that impedance measurement can be performed on the marking singlechips at the same time, and high frequency, low frequency or other frequencies can be adopted for impedance measurement;
s08: polling measurement is carried out on the mark single chip if the mark single chip belongs to the same partition, and specifically, the polling measurement is carried out according to the contribution degree;
s09: adjusting the working state of the system according to the impedance strategy result; specifically, for example, the single-chip high-frequency impedance is higher, so that the operating water temperature of a pile can be reduced or the air flow rate can be reduced; the low-frequency impedance is higher, so that the operating water temperature of a pile can be increased or the air flow rate can be increased.
As shown in fig. 3, the present embodiment also discloses a fuel cell system control apparatus, the fuel cell being divided into a plurality of segments, each segment including a plurality of individual pieces, comprising:
the standard deviation module is used for acquiring the voltage of the single chip of the fuel cell and obtaining the standard deviation of the single chip voltage based on the voltage of the single chip;
the threshold judging module is used for judging whether the standard deviation of the single-chip voltage exceeds a set threshold;
a contribution module, for calculating standard deviation contribution of the single-chip voltage if the contribution exceeds a set threshold, and sequencing the single chips based on the contribution;
the marking module is used for selecting the single sheets according to the sequence and marking the selected single sheets to obtain marked single sheets;
the partition judging module is used for judging whether the marked singlechips belong to the same partition;
the measurement module is used for measuring the single chip by adopting a set measurement strategy based on the judgment result;
and the control module is used for controlling the fuel cell system according to the measurement result.
An electronic device of an embodiment of the present disclosure includes a memory and a processor. The memory is for storing non-transitory computer readable instructions. In particular, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, random Access Memory (RAM) and/or cache memory (cache), and the like. The non-volatile memory may include, for example, read Only Memory (ROM), hard disk, flash memory, and the like.
The processor may be a Central Processing Unit (CPU) or other form of processing unit having data processing and/or instruction execution capabilities, and may control other components in the electronic device to perform the desired functions. In one embodiment of the present disclosure, the processor is configured to execute the computer readable instructions stored in the memory, so that the electronic device performs all or part of the steps of the fuel cell system control method of the embodiments of the present disclosure described above.
It should be understood by those skilled in the art that, in order to solve the technical problem of how to obtain a good user experience effect, the present embodiment may also include well-known structures such as a communication bus, an interface, and the like, and these well-known structures are also included in the protection scope of the present disclosure.
Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure. A schematic diagram of an electronic device suitable for use in implementing embodiments of the present disclosure is shown. The electronic device shown in fig. 4 is merely an example and should not be construed to limit the functionality and scope of use of the disclosed embodiments.
As shown in fig. 4, the electronic device may include a processing means (e.g., a central processing unit, a graphic processor, etc.), which may perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) or a program loaded from the storage means into a Random Access Memory (RAM). In the RAM, various programs and data required for the operation of the electronic device are also stored. The processing device, ROM and RAM are connected to each other via a bus. An input/output (I/O) interface is also connected to the bus.
In general, the following devices may be connected to the I/O interface: input means including, for example, sensors or visual information gathering devices; output devices including, for example, display screens and the like; storage devices including, for example, magnetic tape, hard disk, etc.; a communication device. The communication means may allow the electronic device to communicate wirelessly or by wire with other devices, such as edge computing devices, to exchange data. While fig. 4 shows an electronic device having various means, it is to be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may be implemented or provided instead.
In particular, according to embodiments of the present disclosure, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a non-transitory computer readable medium, the computer program comprising program code for performing the method shown in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via a communication device, or installed from a storage device, or installed from ROM. When the computer program is executed by the processing device, all or part of the steps of the fuel cell system control method of the embodiment of the present disclosure are performed.
The detailed description of the present embodiment may refer to the corresponding description in the foregoing embodiments, and will not be repeated herein.
A computer-readable storage medium according to an embodiment of the present disclosure has stored thereon non-transitory computer-readable instructions. All or part of the steps of the fuel cell system control method of the embodiments of the present disclosure described above are performed when the non-transitory computer readable instructions are executed by a processor.
The computer-readable storage medium described above includes, but is not limited to: optical storage media (e.g., CD-ROM and DVD), magneto-optical storage media (e.g., MO), magnetic storage media (e.g., magnetic tape or removable hard disk), media with built-in rewritable non-volatile memory (e.g., memory card), and media with built-in ROM (e.g., ROM cartridge).
The detailed description of the present embodiment may refer to the corresponding description in the foregoing embodiments, and will not be repeated herein.
The basic principles of the present disclosure have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present disclosure are merely examples and not limiting, and these advantages, benefits, effects, etc. are not to be considered as necessarily possessed by the various embodiments of the present disclosure. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, since the disclosure is not necessarily limited to practice with the specific details described.
In this disclosure, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions, and the block diagrams of devices, apparatuses, devices, systems involved in this disclosure are merely illustrative examples and are not intended to require or implicate that connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.
In addition, as used herein, the use of "or" in the recitation of items beginning with "at least one" indicates a separate recitation, such that recitation of "at least one of A, B or C" for example means a or B or C, or AB or AC or BC, or ABC (i.e., a and B and C). Furthermore, the term "exemplary" does not mean that the described example is preferred or better than other examples.
It is also noted that in the systems and methods of the present disclosure, components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered equivalent to the present disclosure.
Various changes, substitutions, and alterations are possible to the techniques described herein without departing from the teachings of the techniques defined by the appended claims. Furthermore, the scope of the claims of the present disclosure is not limited to the particular aspects of the process, machine, manufacture, composition of matter, means, methods and acts described above. The processes, machines, manufacture, compositions of matter, means, methods, or acts, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein may be utilized. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or acts.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the disclosure. Thus, the present disclosure is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the disclosure to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.

Claims (6)

1. A fuel cell system control method in which a fuel cell is divided into a plurality of partitions, each including a plurality of individual pieces, comprising:
acquiring the voltage of a single chip of the fuel cell, and obtaining the standard deviation of the single chip voltage based on the voltage of the single chip;
judging whether the standard deviation of the single-chip voltage exceeds a set threshold value;
if the standard deviation contribution degree exceeds the set threshold value, calculating the standard deviation contribution degree of the single-chip voltage, and sequencing the single chips based on the contribution degree;
selecting single sheets according to the sequence, and marking the selected single sheets to obtain marked single sheets;
judging whether the marked singlechips belong to the same partition;
measuring the single chip by adopting a set measurement strategy based on the judgment result;
controlling the fuel cell system according to the measurement result;
the contribution degree calculation formula is as follows:
Figure FDA0004183410310000011
m is the number of single chips, V i For the voltage value of the i-th slice,
Figure FDA0004183410310000012
for the average value of all monolithic voltages, l and i are constants, and neither l nor i is greater than m;
measuring the single chip by adopting a set measurement strategy based on the judgment result, comprising:
if the marking singlechips belong to the same partition, synchronously measuring the marking singlechips; the synchronous measurement method comprises impedance measurement;
if the marked singlechips do not belong to the same partition, carrying out polling measurement on the marked singlechips, and sequencing the polling measurement according to the contribution degree; the measurement method of synchronous measurement or polling measurement includes impedance measurement;
the impedance measurement includes a high frequency impedance and/or a low frequency impedance;
controlling the fuel cell system based on the measurement result, comprising:
the single-chip high-frequency impedance is higher, so that the operating water temperature of the electric pile is reduced or the air flow is reduced;
the low-frequency impedance of the single chip is higher, so that the operating water temperature of the electric pile is improved or the air flow is improved.
2. The fuel cell system control method according to claim 1, wherein selecting the individual pieces according to the ranking, and marking the selected individual pieces to obtain the marked individual pieces, comprises:
selecting the single sheets of n before sequencing, and marking the single sheets of n before sequencing.
3. The fuel cell system control method according to claim 2, wherein n is not greater than the number of partitions.
4. A fuel cell system control apparatus in which a fuel cell is divided into a plurality of partitions, each partition including a plurality of individual pieces, comprising:
the standard deviation module is used for acquiring the voltage of the single chip of the fuel cell and obtaining the standard deviation of the single chip voltage based on the voltage of the single chip;
the threshold judging module is used for judging whether the standard deviation of the single-chip voltage exceeds a set threshold;
a contribution module, for calculating standard deviation contribution of the single-chip voltage if the contribution exceeds a set threshold, and sequencing the single chips based on the contribution;
the marking module is used for selecting the single sheets according to the sequence and marking the selected single sheets to obtain marked single sheets;
the partition judging module is used for judging whether the marked singlechips belong to the same partition;
the measurement module is used for measuring the single chip by adopting a set measurement strategy based on the judgment result;
a control module for controlling the fuel cell system according to the measurement result;
measuring the single chip by adopting a set measurement strategy based on the judgment result, comprising:
if the marking singlechips belong to the same partition, synchronously measuring the marking singlechips; the synchronous measurement method comprises impedance measurement;
if the marked singlechips do not belong to the same partition, carrying out polling measurement on the marked singlechips, and sequencing the polling measurement according to the contribution degree; the measurement method of synchronous measurement or polling measurement includes impedance measurement;
the impedance measurement includes a high frequency impedance and/or a low frequency impedance;
controlling the fuel cell system based on the measurement result, comprising:
the single-chip high-frequency impedance is higher, so that the operating water temperature of the electric pile is reduced or the air flow is reduced;
the low-frequency impedance of the single chip is higher, so that the operating water temperature of the electric pile is improved or the air flow is improved.
5. An electronic device, the electronic device comprising:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the fuel cell system control method of any one of claims 1-3.
6. A computer-readable storage medium storing computer instructions for causing a computer to execute the fuel cell system control method according to any one of claims 1 to 3.
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