CN113258102B - Cell stack activation method and device and storage medium - Google Patents
Cell stack activation method and device and storage medium Download PDFInfo
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- CN113258102B CN113258102B CN202110672074.XA CN202110672074A CN113258102B CN 113258102 B CN113258102 B CN 113258102B CN 202110672074 A CN202110672074 A CN 202110672074A CN 113258102 B CN113258102 B CN 113258102B
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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
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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
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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
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
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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
Abstract
The invention discloses a battery stack activation method, a device and a storage medium, which control the state of a substance entering a battery stack to be in a dry state, wherein the substance comprises: fuel, air and water; inputting the substance in the dry state into the cell stack, and executing N times of power increasing and decreasing cycles, wherein the power increasing and decreasing cycles comprise: controlling the cell stack to enter a first sub-process, then enter a second sub-process and finally enter a third sub-process, wherein N is an integer greater than 0; after the N times of power-up and power-down cycles are executed, controlling the state of a substance entering the cell stack to be a wet state; inputting the substance in the wet state into the cell stack, and executing M times of the power density increasing and decreasing cycles, wherein M is an integer greater than 0. The invention gives full play to the performance of the membrane electrode catalyst, and has shorter activation time and better activation effect.
Description
Technical Field
The invention relates to the field of fuel cells, in particular to a cell stack activation method, a cell stack activation device and a storage medium.
Background
The membrane electrode is the core component of the fuel cell stack, and comprises a cathode catalyst layer, an anode catalyst layer and a proton exchange membrane sandwiched between the cathode catalyst layer and the anode catalyst layer, and the quality of the membrane electrode directly affects the stability of the output power of the fuel cell stack and the consistency of the cell voltage. However, in the preparation process of the membrane electrode, pores in the catalyst layer can be blocked, so that reaction gas cannot reach the surface of the catalyst; and the proton exchange membrane in the membrane electrode is also dry at this time. In order to fully exert the activity and utilization rate of the catalyst in the membrane electrode and enable the fuel cell stack to achieve better working performance, the membrane electrode of the assembled fuel cell stack needs to be activated, so that good gas-water transmission channels are established on the two sides of the cathode and the anode, the membrane electrode is fully wetted, and the catalyst in the membrane electrode can release the optimal catalytic performance.
The existing fuel cell stack is basically activated by continuously pulling and loading to the maximum current, the activation time is long, the general activation effect is poor, and the performance of a membrane electrode catalyst cannot be fully exerted.
Disclosure of Invention
In view of the above, the present invention provides a stack activation method, apparatus and storage medium that overcomes or at least partially solves the above problems.
Method example 1, a method of activating a cell stack, comprising:
controlling a state of a substance entering the stack to a dry state, wherein the substance includes: fuel, air and water;
inputting the substance in the dry state into the cell stack, and executing N times of power increasing and decreasing cycles, wherein the power increasing and decreasing cycles comprise: controlling the cell stack to enter a first sub-process, then enter a second sub-process and finally enter a third sub-process, wherein N is an integer greater than 0;
after the N times of power-up and power-down cycles are executed, controlling the state of a substance entering the cell stack to be a wet state;
inputting the substance in the wet state into the cell stack, and executing M times of the power density increasing and decreasing cycles, wherein M is an integer greater than 0;
wherein the first sub-process comprises: controlling the electrical density of the cell stack to change from a first electrical density value to a second electrical density value and controlling the amount of the air newly entering the cell stack to be a first mass;
the second sub-process comprises: controlling the fuel newly entering the stack to the first mass;
the third sub-process comprises: controlling the amount of the fuel and the air newly entering the cell stack to be the second mass, and then controlling the electrical density of the cell stack to be changed from the second electrical density value to the first electrical density value.
Method embodiment 2, in combination with method embodiment 1, the method further comprising:
controlling the state of the substance entering the cell stack to a pre-state before controlling the state of the substance entering the cell stack to a dry state;
in the pre-state, the electrical density of the stack is loaded to the first electrical density value and maintained for a first length of time.
and in the pre-state, loading the electric density of the battery stack to the first electric density value, and keeping the first time length so that the cell average voltage of the battery stack is stabilized at a first voltage value.
Method example 4, in certain alternative embodiments, in combination with method example 2, the pre-state comprises: a metering ratio state, a pressure state, a temperature state and a dry-wet state;
the metering ratio state is as follows: the fuel to air stoichiometric ratio entering the stack is a first ratio;
the pressure state is as follows: the pressure of the fuel entering the stack is a first fuel pressure, the pressure of the air entering the stack is a first air pressure, and the pressure of the water entering the stack is a first water pressure;
the temperature state is as follows: the temperature of the fuel, the temperature of the air, and the temperature of the water entering the stack are all first temperatures;
the dry and wet state is as follows: the fuel and the air enter the cell stack after being humidified, and the humidification temperature is the first temperature.
Method example 5, in combination with method example 4, the dry state is: on the basis of the pre-state, the dry-wet state is a first dry-wet sub-state;
the first dry-wet sub-state is as follows: the fuel enters the cell stack after being humidified, the humidification temperature is the first temperature, and the air directly enters the cell stack without being humidified;
the wet state is as follows: on the basis of the pre-state, the dry-wet state is a second dry-wet sub-state, and the temperature state is a temperature sub-state;
the second dry-wet sub-state is as follows: humidifying the fuel and the air, and then feeding the humidified fuel and the air into the cell stack, wherein the humidifying temperature is a second temperature;
the temperature sub-states are: the temperature of the fuel, the temperature of the air, and the temperature of the water entering the stack are all the second temperature.
Method embodiment 6, in combination with method embodiment 1, each of the electrical density increasing and decreasing cycles includes:
and controlling the cell stack to enter the first sub-process, enter the second sub-process after a second time length, and finally enter the third sub-process.
Method embodiment 7, in combination with method embodiment 6, each of the electrical density increasing and decreasing cycles includes:
and controlling the cell stack to enter the first sub-process, enter the second sub-process after the second time length, enter the second sub-process after the third time length, and finally enter the third sub-process.
Method embodiment 8, in combination with method embodiment 1, the third sub-process comprising:
controlling the amount of the fuel and the air newly entering the stack to be the second mass, and then controlling the electrical density of the stack to change from the second electrical density value to the first electrical density value for a fourth length of time.
Device embodiment 1, a stack activation device, comprising: the device comprises a dry state unit, a first repeating unit, a wet state unit and a second repeating unit;
the dry state unit is configured to perform control of a state of a substance entering the cell stack to a dry state, wherein the substance includes: fuel, air and water;
the first repeating unit is configured to perform input of the substance in the dry state to the cell stack and perform N cycles of increasing and decreasing electrical density, wherein the cycles of increasing and decreasing electrical density include: controlling the cell stack to enter a first sub-process, then enter a second sub-process and finally enter a third sub-process, wherein N is an integer greater than 0;
the wet state unit is configured to control the state of the substance entering the cell stack to be a wet state after the N times of power-up and power-down cycles are executed;
the second repeating unit is configured to perform the input of the substance in the wet state to the cell stack, and perform the power density increasing and decreasing cycle M times, where M is an integer greater than 0;
wherein the first sub-process comprises: controlling the electrical density of the cell stack to change from a first electrical density value to a second electrical density value and controlling the amount of the air newly entering the cell stack to be a first mass;
the second sub-process comprises: controlling the fuel newly entering the stack to the first mass;
the third sub-process comprises: controlling the amount of the fuel and the air newly entering the cell stack to be the second mass, and then controlling the electrical density of the cell stack to be changed from the second electrical density value to the first electrical density value.
Alternatively, a computer-readable storage medium has stored thereon a program which, when executed by a processor, implements the stack activation method of any one of the above.
With the technical scheme, the state of a substance entering the cell stack is controlled to be in a dry state, wherein the substance comprises: fuel, air and water; inputting the substance in the dry state into the cell stack, and executing N times of power increasing and decreasing cycles, wherein the power increasing and decreasing cycles comprise: controlling the cell stack to enter a first sub-process, then enter a second sub-process and finally enter a third sub-process, wherein N is an integer greater than 0; after the N times of power-up and power-down cycles are executed, controlling the state of a substance entering the cell stack to be a wet state; inputting the substance in the wet state into the cell stack, and executing M times of the power density increasing and decreasing cycles, wherein M is an integer greater than 0; wherein the first sub-process comprises: controlling the electrical density of the cell stack to change from a first electrical density value to a second electrical density value and controlling the amount of the air newly entering the cell stack to be a first mass; the second sub-process comprises: controlling the fuel newly entering the stack to the first mass; the third sub-process comprises: controlling the amount of the fuel and the air newly entering the cell stack to be the second mass, and then controlling the electrical density of the cell stack to be changed from the second electrical density value to the first electrical density value. Therefore, the invention can give full play to the performance of the membrane electrode catalyst, and has shorter activation time and better activation effect.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a schematic flow diagram of a cell stack activation method provided by the present invention;
fig. 2 is a schematic structural view illustrating a stack activation apparatus according to the present invention;
fig. 3 shows a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Method example 1, as shown in fig. 1, the present invention provides a stack activation method comprising: s100, S200, S300, and S400;
s100, controlling the state of a substance entering the cell stack to be in a dry state, wherein the substance comprises: fuel, air and water;
alternatively, the materials referred to herein as entering the stack may include: fuel, air, and water, as the present invention is not limited in this respect.
Alternatively, the fuel may be hydrogen or other gaseous or liquid fuel, and any fuel that can be used to activate the fuel cell stack is within the scope of the present invention, and the present invention is not limited thereto.
Alternatively, the water may be liquid water or gaseous water, and the present invention is not limited thereto.
S200, inputting the substance in the dry state into the cell stack, and executing N times of power increasing and decreasing cycles, wherein the power increasing and decreasing cycles comprise: controlling the cell stack to enter a first sub-process, then enter a second sub-process and finally enter a third sub-process, wherein N is an integer greater than 0;
wherein the first sub-process comprises: controlling the electrical density of the cell stack to change from a first electrical density value to a second electrical density value and controlling the amount of the air newly entering the cell stack to be a first mass;
the second sub-process comprises: controlling the fuel newly entering the stack to the first mass;
the third sub-process comprises: controlling the amount of the fuel and the air newly entering the cell stack to be the second mass, and then controlling the electrical density of the cell stack to be changed from the second electrical density value to the first electrical density value.
Optionally, the first electrical secret value and the second electrical secret value are not specifically limited in the present invention, and any feasible manner is within the protection scope of the present invention.
Optionally, the first electrical secret value may be greater than the second electrical secret value, or may not be greater than the second electrical secret value, which is not limited in the present invention.
Alternatively, N cycles of plus and minus electrical density may be performed after a certain amount of the substance in the dry state is input to the cell stack. Of course, N cycles of increasing and decreasing the electrical density may be performed when the substance in the dry state starts to be input to the cell stack, which is not limited in the present invention.
Optionally, there may be multiple hold times during each of the power-up and power-down cycles. For example, in method embodiment 6 provided by the present invention, in combination with method embodiment 1, each of the electrical density increasing and decreasing cycles includes:
and controlling the cell stack to enter the first sub-process, enter the second sub-process after a second time length, and finally enter the third sub-process.
Alternatively, the second time period may be calculated from a time when the electrical density of the stack changes to the second electrical density value, or may be calculated from a time when the amount of the air newly introduced into the stack changes to the first mass, which is not limited in the present invention.
Optionally, the second time period is not specifically limited, and any feasible manner falls within the protection scope of the present invention.
For another example, method embodiment 7 according to the present invention, in combination with method embodiment 6, includes, for each of the secret addition and subtraction cycles:
and controlling the cell stack to enter the first sub-process, enter the second sub-process after the second time length, enter the second sub-process after the third time length, and finally enter the third sub-process.
Alternatively, the third time period may be calculated from a time when the amount of the fuel newly introduced into the stack becomes the first mass, which is not limited by the present invention.
Optionally, the third time period is not specifically limited, and any feasible manner falls within the protection scope of the present invention.
Optionally, after the third sub-process is executed, the third sub-process may be maintained for a period of time, and then the first sub-process of the next encryption/decryption loop is executed again, which is not limited in the present invention.
Optionally, the first sub-process is not specifically limited by the present invention. For example, in a first sub-process: the air inlet valve can control the air amount newly entering the cell stack to be a first quality after the electric density of the cell stack is changed from a first electric density value to a second electric density value; or after the air amount newly entering the cell stack is controlled to be the first quality, the electric density of the cell stack is controlled to be changed from the first electric density value to the second electric density value; the electrical density of the cell stack may be changed from a first electrical density value to a second electrical density value, and the amount of the air newly introduced into the cell stack may be controlled to be the first mass, which is not limited in the present invention.
Optionally, after the electrical density of the cell stack is controlled to change from the first electrical density value to the second electrical density value, the air amount newly entering the cell stack may be controlled to be the first mass after a period of time.
Optionally, the air amount newly entering the cell stack may be controlled to be the first mass, and after the air amount is maintained for a period of time, the electrical density of the cell stack may be controlled to change from the first electrical density value to the second electrical density value.
Optionally, the third sub-process is not specifically limited by the present invention. For example, in the third sub-process: the fuel and the air which newly enter the cell stack can be controlled to be of the second mass, and then the electric density of the cell stack is controlled to be changed from the second electric density value to the first electric density value; or after the electrical density of the cell stack is controlled to be changed from the second electrical density value to the first electrical density value, controlling the quantities of the fuel and the air newly entering the cell stack to be the second mass; the fuel and the air newly entering the cell stack may be controlled to have the second mass and the electrical density of the cell stack may be controlled to change from the second electrical density value to the first electrical density value, which is not limited in the present invention.
Alternatively, after controlling the amount of the fuel and the amount of the air newly entering the cell stack to be the second mass, the fuel and the air may be maintained for a period of time, and then the electrical density of the cell stack may be controlled to change from the second electrical density value to the first electrical density value.
Alternatively, after the electrical density of the cell stack is changed from the second electrical density value to the first electrical density value, the cell stack may be maintained for a period of time, and then the amounts of the fuel and the air newly entering the cell stack are controlled to be the second mass.
Optionally, in method embodiment 8 provided by the present invention, in combination with method embodiment 1, the third sub-process includes:
controlling the amount of the fuel and the air newly entering the stack to be the second mass, and then controlling the electrical density of the stack to change from the second electrical density value to the first electrical density value for a fourth length of time.
Alternatively, the fourth time length may be calculated from a time when the electrical density of the cell stack changes to the first electrical density value, or may be calculated from a time when the amounts of the fuel and the air newly entering the cell stack are both the second mass, which is not limited in the present invention.
Optionally, the fourth time length is not specifically limited in the present invention, and any feasible manner falls within the protection scope of the present invention.
Alternatively, the first mass may be 0 or close to 0, i.e. controlling the amount of fuel newly entering the stack to be 0 may be understood as: shutting off the fuel newly entering the stack so that no new fuel enters the stack; similarly, controlling the amount of the air newly introduced into the stack to be 0 may be understood as: the air newly introduced into the stack is cut off so that no new air enters the stack, which is not a limitation of the present invention.
S300, after the N times of plus-minus electricity density cycles are executed, controlling the state of a substance entering the cell stack to be in a wet state;
alternatively, the wet state may be the same place as the dry state, or may be different. For example, method embodiment 2 provided by the present invention, in combination with method embodiment 1, further comprises:
controlling the state of the substance entering the cell stack to a pre-state before controlling the state of the substance entering the cell stack to a dry state;
in the pre-state, the electrical density of the stack is loaded to the first electrical density value and maintained for a first length of time.
Alternatively, the pre-state may be an initial state of the present invention, that is, a certain amount of the substance in the pre-state may be input into the cell stack first, which is not limited by the present invention.
Optionally, the disclosure may quickly load the electrical density of the battery stack to the first electrical density value within a reasonable time, which is not limited by the disclosure.
Optionally, after the electrical density of the cell stack is loaded to the first electrical density value, the electrical density of the cell stack may be continuously maintained at the first electrical density value for a period of time. For example, the electrical density of the cell stack is maintained at the first electrical density value for the first time period, which is not limited by the present invention.
Alternatively, the first time period may be calculated from a time when the electrical density of the battery stack is loaded to the first electrical density value, which is not limited by the present invention.
Optionally, the first time period is not specifically limited, and any feasible manner falls within the protection scope of the present invention.
Optionally, in method embodiment 3, in combination with method embodiment 2, the loading the electrical density of the battery stack to the first electrical density value in the pre-state and maintaining the electrical density for the first time period includes:
and in the pre-state, loading the electric density of the battery stack to the first electric density value, and keeping the first time length so that the cell average voltage of the battery stack is stabilized at a first voltage value.
Optionally, in method embodiment 4 provided by the present invention, in some optional implementations, with reference to method embodiment 2, the pre-state includes: a metering ratio state, a pressure state, a temperature state and a dry-wet state;
the metering ratio state is as follows: the fuel to air stoichiometric ratio entering the stack is a first ratio;
the pressure state is as follows: the pressure of the fuel entering the cell stack is a first fuel pressure, the pressure of the air entering the cell stack is a first air pressure, and the pressure of the water entering the cell stack is a first water pressure;
the temperature state is as follows: the temperature of the fuel, the temperature of the air, and the temperature of the water entering the stack are all first temperatures;
the dry and wet state is as follows: the fuel and the air enter the cell stack after being humidified, and the humidification temperature is the first temperature.
Alternatively, references herein to a fuel to air stoichiometric ratio may be understood as a ratio of the mass of fuel to air entering the stack. The first ratio is not particularly limited, and may be set according to actual conditions, and the amounts of the fuel and air entering the cell stack are not all 0.
Alternatively, the pressure of the fuel, the pressure of the air and the pressure of the water entering the stack as referred to herein may be understood in turn as: the inlet pressure of the fuel at the inlet of the stack, the inlet pressure of the air at the inlet of the stack, and the inlet pressure of the water at the inlet of the stack are not limited in this respect.
Alternatively, the temperature of the fuel entering the stack, the temperature of the air and the temperature of the water referred to herein may be understood in turn as: the inlet temperature of the fuel at the inlet of the stack, the inlet temperature of the air at the inlet of the stack, and the inlet temperature of the water at the inlet of the stack, to which the present invention is not limited.
Optionally, in the pre-state, the fuel and the air may be humidified by a humidifier before entering the cell stack, and the humidified fuel and air have a certain relative humidity.
Alternatively, the first temperature is not specifically limited, and any feasible temperature falls within the scope of the present invention.
Optionally, in method embodiment 5 of the present invention, in combination with method embodiment 4, the dry state is: on the basis of the pre-state, the dry-wet state is a first dry-wet sub-state;
the first dry-wet sub-state is as follows: the fuel enters the cell stack after being humidified, the humidification temperature is the first temperature, and the air directly enters the cell stack without being humidified;
namely, the dry state includes: the metering ratio state, the temperature state, the pressure state and the first dry-wet sub-state, but not including the dry-wet state, which is not limited by the present invention.
The wet state is as follows: on the basis of the pre-state, the dry-wet state is a second dry-wet sub-state, and the temperature state is a temperature sub-state;
the second dry-wet sub-state is as follows: humidifying the fuel and the air, and then feeding the humidified fuel and the air into the cell stack, wherein the humidifying temperature is a second temperature;
the temperature sub-states are: the temperature of the fuel, the temperature of the air, and the temperature of the water entering the stack are all the second temperature.
Namely, the wet state includes: the metering ratio state, the pressure state, the temperature sub-state and the second dry-wet sub-state are not included, and the present invention is not limited thereto.
Optionally, in certain alternative embodiments, the second temperature is lower than the first temperature.
Alternatively, the second temperature may be lower than the first temperature or higher than the first temperature, which is not limited in the present invention.
Alternatively, the second temperature and the first temperature are not specifically limited in the present invention, and any feasible manner falls into the protection scope of the present invention.
S400, inputting the substance in the wet state into the cell stack, and executing M times of power density increasing and decreasing cycles, wherein M is an integer greater than 0;
optionally, the invention does not specifically limit M, and any feasible manner falls into the scope of the invention.
Optionally, M may be greater than N, smaller than N, or equal to N, which is not limited in the present invention.
Optionally, the total execution time from S100 to S400 in the present invention may be not higher than a preset execution time threshold, for example, not higher than 80 minutes, which is not limited by the present invention.
In the whole activation process, two states of air side humidification and non-humidification are controlled, and the operation process of introducing hydrogen only to the hydrogen side and cutting off the air side in a short time is adopted, so that the catalyst layer of the membrane electrode is fully protected; and the mode of rapid cyclic loading and unloading of the electrical density at a high speed is adopted, so that the fuel cell stack repeatedly and alternately experiences two output states of low electrical density and high electrical density in a short time, the total time of the whole activation process is short, the activation efficiency of the stack is greatly improved, and the average monomer voltage of the fuel cell stack is obviously improved after the activation is finished.
Device example 1, as shown in fig. 2, the present invention provides a stack activation device comprising: a stack activation device, comprising: a dry state unit 100, a first repeating unit 200, a wet state unit 300, and a second repeating unit 400;
the dry state unit 100 configured to perform controlling a state of a substance entering the stack to a dry state, wherein the substance includes: fuel, air and water;
the first repeating unit 200 is configured to perform input of the substance in the dry state to the cell stack, and perform N cycles of increasing and decreasing electrical density, wherein the cycles of increasing and decreasing electrical density include: controlling the cell stack to enter a first sub-process, then enter a second sub-process and finally enter a third sub-process, wherein N is an integer greater than 0;
the wet state unit 300 configured to perform control of a state of a substance entering the cell stack to a wet state after the N cycles of increasing and decreasing electrical density are performed;
the second repeating unit 400 configured to perform the input of the substance in the wet state to the cell stack, and perform the encryption/decryption cycle M times, where M is an integer greater than 0;
wherein the first sub-process comprises: controlling the electrical density of the cell stack to change from a first electrical density value to a second electrical density value and controlling the amount of the air newly entering the cell stack to be a first mass;
the second sub-process comprises: controlling the fuel newly entering the stack to the first mass;
the third sub-process comprises: controlling the amount of the fuel and the air newly entering the cell stack to be the second mass, and then controlling the electrical density of the cell stack to be changed from the second electrical density value to the first electrical density value.
In some alternative embodiments, in combination with the embodiment shown in fig. 2, the apparatus further comprises: the device comprises a pre-state unit and a secret loading unit;
the pre-state unit is configured to perform control of the state of the substance entering the cell stack to a pre-state before control of the state of the substance entering the cell stack to a dry state;
the electric density loading unit is configured to load the electric density of the battery stack to the first electric density value in the pre-state and keep the electric density for a first time length.
Optionally, in combination with the previous embodiment, in some optional embodiments, the electrical density loading unit is specifically configured to perform, in the pre-state, loading the electrical density of the battery stack to the first electrical density value, and maintain the first time length, so that the cell average voltage of the battery stack is stabilized at the first voltage value.
As shown in fig. 3, an embodiment of the present invention provides an electronic device 70, where the electronic device 70 includes at least one processor 701, and at least one memory 702 and a bus 703, which are connected to the processor 701; the processor 701 and the memory 702 complete communication with each other through the bus 703; the processor 701 is configured to call the program instructions in the memory 702 to execute any of the above-described battery stack activation methods.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, electronic devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, an electronic device includes one or more processors (CPUs), memory, and a bus. The electronic device may also include input/output interfaces, network interfaces, and the like.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip. The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (9)
1. A method of activating a cell stack, comprising:
controlling a state of a substance entering the stack to a dry state, wherein the substance includes: fuel, air and water; the dry state comprises: the fuel to air stoichiometric ratio entering the stack is a first ratio; the pressure of the fuel entering the stack is a first fuel pressure, the pressure of the air entering the stack is a first air pressure, and the pressure of the water entering the stack is a first water pressure; the temperature of the fuel, the temperature of the air, and the temperature of the water entering the stack are all first temperatures; the fuel enters the cell stack after being humidified, the humidification temperature is the first temperature, and the air directly enters the cell stack without being humidified;
inputting the substance in the dry state to the cell stack, and performing N cycles of increasing and decreasing current density, wherein the cycles of increasing and decreasing current density comprise: controlling the cell stack to enter a first sub-process, then enter a second sub-process and finally enter a third sub-process, wherein N is an integer greater than 0;
after the N times of cycles of increasing and decreasing the current density are executed, controlling the state of a substance entering the cell stack to be a wet state; the wet state includes: the fuel to air stoichiometric ratio entering the stack is a first ratio; the pressure of the fuel entering the stack is a first fuel pressure, the pressure of the air entering the stack is a first air pressure, and the pressure of the water entering the stack is a first water pressure; the temperature of the fuel, the temperature of the air, and the temperature of the water entering the stack are all second temperatures; the fuel and the air enter the cell stack after being humidified, and the humidification temperature is the second temperature;
inputting the substance in the wet state into the cell stack, and executing the current density increasing and decreasing cycles for M times, wherein M is an integer greater than 0;
the total execution time of the above activation method is not higher than 80 minutes;
wherein the first sub-process comprises: controlling a current density of the stack from a first current density value to a second current density value and controlling an amount of the air newly introduced into the stack to be a first mass; the first current density value is greater than the second current density value; the first mass is 0;
the second sub-process comprises: controlling the fuel newly entering the stack to the first mass;
the third sub-process comprises: controlling the amount of the fuel and the air newly introduced into the stack to be a second mass, and then controlling the current density of the stack to be changed from the second current density value to the first current density value.
2. The cell stack activation method according to claim 1, further comprising:
controlling the state of the substance entering the cell stack to a pre-state before controlling the state of the substance entering the cell stack to a dry state;
in the pre-state, loading the current density of the stack to the first current density value and maintaining for a first length of time.
3. The stack activation method of claim 2, wherein the loading the current density of the stack to the first current density value and maintaining the current density for a first length of time in the pre-state comprises:
in the pre-state, loading the current density of the cell stack to the first current density value and maintaining the first time length so that the cell average voltage of the cell stack is stabilized at a first voltage value.
4. The stack activation method according to claim 2, wherein the pre-state comprises: a metering ratio state, a pressure state, a temperature state and a dry-wet state;
the metering ratio state is as follows: the fuel to air stoichiometric ratio entering the stack is a first ratio;
the pressure state is as follows: the pressure of the fuel entering the stack is a first fuel pressure, the pressure of the air entering the stack is a first air pressure, and the pressure of the water entering the stack is a first water pressure;
the temperature state is as follows: the temperature of the fuel, the temperature of the air, and the temperature of the water entering the stack are all first temperatures;
the dry and wet state is as follows: the fuel and the air enter the cell stack after being humidified, and the humidification temperature is the first temperature.
5. The method of activating a cell stack according to claim 1, wherein each cycle of increasing and decreasing current density comprises:
and controlling the cell stack to enter the first sub-process, enter the second sub-process after a second time length, and finally enter the third sub-process.
6. The method of activating a cell stack according to claim 5, wherein each cycle of the current density plus and minus includes:
and controlling the cell stack to enter the first sub-process, enter the second sub-process after the second time length, enter the second sub-process after the third time length, and finally enter the third sub-process.
7. The stack activation method according to claim 1, wherein the third sub-process includes:
controlling the amount of fuel and air newly entering the stack to be the second mass, and then controlling the current density of the stack to change from the second current density value to the first current density value for a fourth length of time.
8. A stack activation device, comprising: the device comprises a dry state unit, a first repeating unit, a wet state unit and a second repeating unit;
the dry state unit is configured to perform control of a state of a substance entering the cell stack to a dry state, wherein the substance includes: fuel, air and water; the dry state comprises: the fuel to air stoichiometric ratio entering the stack is a first ratio; the pressure of the fuel entering the stack is a first fuel pressure, the pressure of the air entering the stack is a first air pressure, and the pressure of the water entering the stack is a first water pressure; the temperature of the fuel, the temperature of the air, and the temperature of the water entering the stack are all first temperatures; the fuel enters the cell stack after being humidified, the humidification temperature is the first temperature, and the air directly enters the cell stack without being humidified;
the first repeating unit is configured to perform input of the substance in the dry state to the cell stack and perform N cycles of plus and minus current density, wherein the cycles of plus and minus current density include: controlling the cell stack to enter a first sub-process, then enter a second sub-process and finally enter a third sub-process, wherein N is an integer greater than 0;
the wet state unit is configured to control the state of the substance entering the cell stack to be a wet state after the N times of cycles of increasing and decreasing the current density are executed; the wet state includes: the fuel to air stoichiometric ratio entering the stack is a first ratio; the pressure of the fuel entering the stack is a first fuel pressure, the pressure of the air entering the stack is a first air pressure, and the pressure of the water entering the stack is a first water pressure; the temperature of the fuel, the temperature of the air, and the temperature of the water entering the stack are all second temperatures; the fuel and the air enter the cell stack after being humidified, and the humidification temperature is the second temperature;
the second repeating unit is configured to perform the inputting of the substance in the wet state to the cell stack, and perform the increasing and decreasing current density cycles M times, where M is an integer greater than 0;
the total execution time of the activation process of the above units is not higher than 80 minutes;
wherein the first sub-process comprises: controlling a current density of the stack from a first current density value to a second current density value and controlling an amount of the air newly introduced into the stack to be a first mass; the first current density value is greater than the second current density value; the first mass is 0;
the second sub-process comprises: controlling the fuel newly entering the stack to the first mass;
the third sub-process comprises: controlling the amount of the fuel and the air newly introduced into the stack to be a second mass, and then controlling the current density of the stack to be changed from the second current density value to the first current density value.
9. A computer-readable storage medium on which a program is stored, the program implementing the stack activation method according to any one of claims 1 to 7 when executed by a processor.
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