CN110380089B - Gas removal method and apparatus - Google Patents
Gas removal method and apparatus Download PDFInfo
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- CN110380089B CN110380089B CN201910656667.XA CN201910656667A CN110380089B CN 110380089 B CN110380089 B CN 110380089B CN 201910656667 A CN201910656667 A CN 201910656667A CN 110380089 B CN110380089 B CN 110380089B
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The embodiment of the invention provides a gas removing method and a gas removing device, which are applied to an electric vehicle, wherein the electric vehicle comprises a fuel cell, the fuel cell comprises a hydrogen path, and the hydrogen path comprises a hydrogen removing valve, and the method comprises the following steps: acquiring the state of the fuel cell, and acquiring the actual output power and the preset output power of the fuel cell if the state of the fuel cell is determined to be the normal working state; determining a first hydrogen discharge duration according to the actual output power and the preset output power, wherein the first hydrogen discharge duration indicates the opening duration of a hydrogen discharge valve; and controlling the opening time of the hydrogen exhaust valve to be equal to the first hydrogen exhaust time. The method is used for accurately removing the hydrogen carrying the impurity gas, improving the reaction rate of the fuel cell, further improving the actual output power of the fuel cell and prolonging the service life of the fuel cell.
Description
Technical Field
The embodiment of the invention relates to the field of proton exchange membrane fuel cells, in particular to a gas removing method and a gas removing device.
Background
An electric vehicle (e.g., an electric automobile, an electric motorcycle) is generally provided with a fuel cell, wherein the fuel cell includes a hydrogen path and an air path, and a stack is provided in the hydrogen path. The hydrogen in the hydrogen path and the air in the air path may chemically react in the stack to generate electrical energy that is used to maintain normal operation of the electric vehicle.
At present, in the process of chemical reaction between hydrogen in the hydrogen path and air in the air path in the galvanic pile, impurity gases (e.g., nitrogen, argon, etc.) in the air path can permeate into the hydrogen in the hydrogen path through a proton exchange membrane in the galvanic pile, so that the hydrogen carries the impurity gases. At present, in order to remove hydrogen carrying impurity gases, the opening duration of a hydrogen discharge valve in a hydrogen path is controlled to be equal to a preset duration after every preset time interval, so that the hydrogen carrying the impurity gases is discharged through the hydrogen discharge valve.
In the process, the opening time of the hydrogen discharge valve in the hydrogen path is controlled to be equal to the preset time after every preset time interval, so that the hydrogen carrying impurity gas cannot be accurately discharged, the reaction rate of the fuel cell is low, and the service life of the fuel cell is shortened.
Disclosure of Invention
The embodiment of the invention provides a gas removing method and a gas removing device, which are used for accurately removing hydrogen carrying impurity gases, further improving the reaction rate of a fuel cell, improving the actual output power of the fuel cell and prolonging the service life of the fuel cell.
In a first aspect, an embodiment of the present invention provides a gas purging method applied to an electric vehicle, where the electric vehicle includes a fuel cell, the fuel cell includes a hydrogen gas path, and the hydrogen gas path includes a hydrogen purging valve, where the method includes:
acquiring the state of the fuel cell, and acquiring the actual output power and the preset output power of the fuel cell if the state of the fuel cell is determined to be the normal working state;
determining a first hydrogen discharge duration according to the actual output power and the preset output power, wherein the first hydrogen discharge duration indicates the opening duration of the hydrogen discharge valve;
and controlling the opening time of the hydrogen exhaust valve to be equal to the first hydrogen exhaust time.
In a possible embodiment, the determining a first hydrogen discharging duration according to the actual output power and the preset output power includes:
determining the gas content of impurity gas in the hydrogen path according to the actual output power and the preset output power;
and determining the first hydrogen discharging time length according to the gas content and a preset first corresponding relation, wherein the first corresponding relation comprises the corresponding relation between the gas content and the hydrogen discharging time length.
In another possible embodiment, the determining the gas content of the impurity gas according to the actual output power and the preset output power includes:
acquiring attribute information of the fuel cell, wherein the attribute information comprises a use duration and a model;
determining a power coefficient of the fuel cell according to the attribute information and the preset output power;
and determining the gas content according to the actual output power, the preset output power and the power coefficient.
In another possible embodiment, the determining the power coefficient of the fuel cell according to the attribute information and the preset output power includes:
determining the wear coefficient of the fuel cell according to the service life and a preset second corresponding relation, wherein the second corresponding relation comprises the corresponding relation between the service life and the wear coefficient;
determining the energy consumption coefficient of the fuel cell according to the model, the preset output power and a preset third corresponding relation, wherein the third corresponding relation comprises the corresponding relation between the model, the preset output power and the energy consumption coefficient;
and determining the power coefficient of the fuel cell according to the abrasion coefficient and the energy consumption coefficient.
In another possible embodiment, the determining the first hydrogen exhaust period according to the gas content and a first preset corresponding relation includes:
judging whether the gas content is greater than or equal to a first preset content;
and if the gas content is greater than or equal to the first preset content, determining the first hydrogen discharge duration according to the gas content and the first corresponding relation.
In another possible embodiment, if it is determined that the state of the fuel cell is a normal stop state, the method further includes:
judging whether the gas content is less than or equal to a second preset content, wherein the second preset content is less than the first preset content;
if the gas content is determined to be less than or equal to the second preset content, determining a second hydrogen discharge time length according to the gas content and the first corresponding relation, wherein the second hydrogen discharge time length indicates the time length for discharging hydrogen from the fuel cell;
and controlling the opening time of the hydrogen exhaust valve to be equal to the second hydrogen exhaust time.
In another possible embodiment, if it is determined that the state of the fuel cell is a fault state, the method further includes:
and controlling the opening time of the hydrogen discharge valve to be equal to the preset hydrogen discharge time.
In a second aspect, an embodiment of the present invention provides a gas remover, which is applied to an electric vehicle, where the electric vehicle includes a fuel cell, the fuel cell includes a hydrogen path, the hydrogen path includes a hydrogen discharge valve, and the remover includes: an acquisition module, a determination module, and a control module, wherein,
the acquisition module is used for acquiring the state of the fuel cell, and acquiring the actual output power and the preset output power of the fuel cell if the state of the fuel cell is determined to be the normal working state;
the determining module is used for determining a first hydrogen discharging duration according to the actual output power and the preset output power, wherein the first hydrogen discharging duration indicates the opening duration of the hydrogen discharging valve;
the control module is used for controlling the opening duration of the hydrogen discharge valve to be equal to the first hydrogen discharge duration.
In a possible implementation, the determining module is specifically configured to:
determining the gas content of impurity gas in the hydrogen path according to the actual output power and the preset output power;
and determining the first hydrogen discharging time length according to the gas content and a preset first corresponding relation, wherein the first corresponding relation comprises the corresponding relation between the gas content and the hydrogen discharging time length.
In another possible implementation manner, the determining module is specifically configured to:
acquiring attribute information of the fuel cell, wherein the attribute information comprises a use duration and a model;
determining a power coefficient of the fuel cell according to the attribute information and the preset output power;
and determining the gas content according to the actual output power, the preset output power and the power coefficient.
In another possible implementation manner, the determining module is specifically configured to:
determining the wear coefficient of the fuel cell according to the service life and a preset second corresponding relation, wherein the second corresponding relation comprises the corresponding relation between the service life and the wear coefficient;
determining the energy consumption coefficient of the fuel cell according to the model, the preset output power and a preset third corresponding relation, wherein the third corresponding relation comprises the corresponding relation between the model, the preset output power and the energy consumption coefficient;
and determining the power coefficient of the fuel cell according to the abrasion coefficient and the energy consumption coefficient.
In another possible implementation manner, the determining module is specifically configured to:
judging whether the gas content is greater than or equal to a first preset content;
and if the gas content is greater than or equal to the first preset content, determining the first hydrogen discharge duration according to the gas content and the first corresponding relation.
In another possible implementation, the determining module is further configured to:
if the fuel cell is determined to be in a normal stop state, judging whether the gas content is less than or equal to a second preset content, wherein the second preset content is less than the first preset content;
if the gas content is determined to be less than or equal to the second preset content, determining a second hydrogen discharge time length according to the gas content and the first corresponding relation, wherein the second hydrogen discharge time length indicates the time length for discharging hydrogen from the fuel cell;
and controlling the opening time of the hydrogen exhaust valve to be equal to the second hydrogen exhaust time.
In another possible implementation, the determining module is further configured to:
and if the state of the fuel cell is determined to be a fault state, controlling the opening time of the hydrogen discharge valve to be equal to the preset hydrogen discharge time.
In a third aspect, an embodiment of the present invention provides a gas removal method, including: a processor, a memory, the processor coupled with the memory, wherein,
the memory is used for storing a computer program;
the processor is configured to execute a computer program stored in the memory, and when the computer program is executed, the processor performs the method according to any of the first aspect.
In a fourth aspect, an embodiment of the present invention provides a readable storage medium, which includes instructions, when executed on a computer, cause the computer to perform the method according to any one of the above first aspects.
The embodiment of the invention provides a gas removing method and a device, wherein the method comprises the following steps: and acquiring the state of the fuel cell, and acquiring the actual output power and the preset output power of the fuel cell if the state of the fuel cell is determined to be the normal working state. And determining a first hydrogen discharge duration according to the actual output power and the preset output power, wherein the first hydrogen discharge duration indicates the opening duration of the hydrogen discharge valve. The opening duration of the hydrogen discharge valve is controlled to be equal to the first hydrogen discharge duration. According to the actual output power and the preset output power, the first hydrogen discharging time is determined, the opening time of the hydrogen discharging valve is controlled to be equal to the first hydrogen discharging time, hydrogen carrying impurity gas can be accurately discharged, the reaction rate of the fuel cell is improved, the actual output power of the fuel cell is improved, and the service life of the fuel cell is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an application scenario of a gas removal method according to an embodiment of the present invention;
FIG. 2 is a first schematic flow chart of a gas removal method according to an embodiment of the present invention;
FIG. 3 is a second schematic flow chart of a gas removal method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a gas remover according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic view of an application scenario of the gas removal method according to the embodiment of the present invention. As shown in fig. 1, includes: a vehicle controller 10, a battery controller 11, a fuel cell 12, a hydrogen gas path 13, and a hydrogen discharge valve 14. Among them, the hydrogen discharge valve 14 is provided in the hydrogen gas passage 13, and the hydrogen gas passage 13 is provided in the fuel cell 12.
In practical application, the battery controller 11 may obtain the actual output power of the fuel cell 12, obtain the preset output power of the fuel cell 12 from the vehicle controller 10, determine the gas content of the impurity gas in the hydrogen gas path according to the actual output power and the preset output power, determine the hydrogen exhaust duration according to the gas content of the impurity gas, and further control the opening duration of the hydrogen exhaust valve 14 to be equal to the hydrogen exhaust duration, thereby achieving removal of the hydrogen gas carrying the impurity gas. In the process, the gas content of the impurity gas is determined according to the actual output power and the preset output power, the hydrogen discharge time is determined according to the gas content of the impurity gas, and the hydrogen carrying the impurity gas can be accurately discharged, so that the reaction rate of the fuel cell is improved, the actual output power of the fuel cell is further improved, and the service life of the fuel cell is prolonged.
The technical means shown in the present application will be described in detail below with reference to specific examples. It should be noted that the following embodiments may be combined with each other, and the description of the same or similar contents in different embodiments is not repeated.
Fig. 2 is a first schematic flow chart of a gas removal method according to an embodiment of the present invention. As shown in fig. 2, the method includes:
s201: and acquiring the state of the fuel cell, and acquiring the actual output power and the preset output power of the fuel cell if the state of the fuel cell is determined to be the normal working state.
Alternatively, the execution subject of the embodiment of the present invention is a battery controller, and may also be a gas removal device provided in the battery controller, and the gas removal device may be implemented by a combination of software and/or hardware.
The battery controller is provided in an electric vehicle, and the electric vehicle is further provided with a vehicle controller and a fuel cell.
In the present invention, the state of the fuel cell may be acquired from the vehicle controller and the fuel cell.
Specifically, the state of the fuel cell may be any one of a normal operation state, a normal stop state, and an emergency stop state.
Further, the preset output power may be obtained from a vehicle controller, and the actual output power may be obtained from a fuel cell.
S202: and determining a first hydrogen discharge duration according to the actual output power and the preset output power, wherein the first hydrogen discharge duration indicates the opening duration of the hydrogen discharge valve.
Specifically, the gas content of the impurity gas in the hydrogen gas path can be determined according to the actual output power and the preset output power, and the first hydrogen discharge duration is determined according to the gas content of the impurity gas.
Further, the first hydrogen purging duration may be determined based on the gas content of the impurity gas and the first correspondence relationship. The first correspondence may be a correspondence stored in the battery controller in advance.
The impurity gas includes nitrogen, argon, neon, and the like in the air. Wherein the gas content of nitrogen is the largest.
S203: the opening duration of the hydrogen discharge valve is controlled to be equal to the first hydrogen discharge duration.
Specifically, after the first hydrogen discharging duration is determined, an opening instruction may be sent to the hydrogen discharging valve, so as to control the hydrogen discharging valve to be opened, and further make the opening duration of the hydrogen discharging valve equal to the first hydrogen discharging duration.
The gas removal method provided by the embodiment of the invention comprises the following steps: and acquiring the state of the fuel cell, and acquiring the actual output power and the preset output power of the fuel cell if the state of the fuel cell is determined to be the normal working state. And determining a first hydrogen discharge duration according to the actual output power and the preset output power, wherein the first hydrogen discharge duration indicates the opening duration of the hydrogen discharge valve. The opening duration of the hydrogen discharge valve is controlled to be equal to the first hydrogen discharge duration. According to actual output power and preset output power, the length of time for first hydrogen discharge is determined, and then the length of time for controlling the opening of the hydrogen discharge valve is equal to the length of time for first hydrogen discharge, so that hydrogen carrying impurity gas can be accurately discharged, energy waste caused by excessive hydrogen discharge is avoided, the reaction rate of the fuel cell is improved, the actual output power of the fuel cell is further improved, and the service life of the fuel cell is prolonged.
On the basis of the above embodiment, the following will explain the gas removing method provided by the present invention in further detail with reference to the embodiment of fig. 3. Specifically, please refer to fig. 3.
Fig. 3 is a second schematic flow chart of a gas removal method according to an embodiment of the present invention. As shown in fig. 3, the method includes:
s301: the state of the fuel cell is acquired.
S302: it is determined whether the state of the fuel cell is a normal state.
If not, go to S303.
If yes, go to step S304.
Specifically, the normal state includes a normal operating state and a normal stop state.
S303: and controlling the opening time of the hydrogen exhaust valve to be equal to the preset hydrogen exhaust time.
Specifically, if the state of the fuel cell is determined to be a fault state, the opening duration of the hydrogen discharge valve is controlled to be equal to the preset hydrogen discharge duration.
The failure state may be at least one of an excessively high temperature of the fuel cell, an excessively high pressure of hydrogen gas in the hydrogen path, a tire burst of the electric vehicle, and the like.
Optionally, the preset hydrogen discharge duration may be 2 seconds, 3 seconds, and the like, and specifically, the value of the preset hydrogen discharge duration is not limited in this application.
S304: and judging whether the normal state is a normal working state or not.
If yes, S305 to S313 are performed.
If not, then S314-S317 are executed.
S305: the actual output power and the preset output power of the fuel cell are acquired.
S306: acquiring attribute information of the fuel cell, wherein the attribute information comprises a use duration and a model.
Alternatively, the usage time period may be a time period from the time of factory shipment of the fuel cell to the current usage time.
The hydrogen gas circuit further comprises a galvanic pile, and the type of the galvanic pile is the type of the galvanic pile.
S307: and determining the wear coefficient of the fuel cell according to the service life and a preset second corresponding relation.
And the second corresponding relation comprises the corresponding relation between the service time and the wear coefficient.
In practical applications, after the usage duration is determined, the wear coefficient corresponding to the usage duration may be searched in the second correspondence.
S308: and determining the energy consumption coefficient of the fuel cell according to the model, the preset output power and the preset third corresponding relation.
And the third corresponding relation comprises the corresponding relation among the model, the preset output power and the energy consumption coefficient.
Specifically, the third corresponding relationship includes a corresponding relationship between the model, the preset output power range, and the energy consumption coefficient.
In practical application, according to the preset output power, the preset output power range where the preset output power is located is searched in the third corresponding relation, and according to the model and the preset output power range, the energy consumption coefficient is searched in the third corresponding relation.
S309: and determining the power coefficient of the fuel cell according to the wear coefficient and the energy consumption coefficient.
Alternatively, the power coefficient may be the product of the wear coefficient and the energy consumption coefficient.
S310: and determining the gas content according to the actual output power, the preset output power and the power coefficient.
Specifically, the power difference may be determined according to the actual output power and the preset output power, and the gas content may be determined according to the power coefficient and the power difference.
Further, the gas content may be equal to the product of the power coefficient and the power difference.
S311: and judging whether the gas content is greater than or equal to a first preset content.
If not, S312.
If yes, S313.
Alternatively, the first predetermined level may be 0.1, 0.2, etc. (i.e., 0.1, or 0.2 liters of impurity gas in 1 liter of hydrogen gas). Specifically, the first predetermined content is not limited in this application. In practical application, the size of the first preset content can be determined according to actual requirements.
S312: the hydrogen discharge valve is controlled to be kept closed.
S313: and determining a first hydrogen exhaust time length according to the gas content and a preset first corresponding relation.
Wherein the first corresponding relationship includes a corresponding relationship of the gas content to the hydrogen discharge time period.
Specifically, according to the gas content, the hydrogen discharge duration corresponding to the gas content may be searched in the first corresponding relationship, and the hydrogen discharge duration corresponding to the gas content may be determined as the first hydrogen discharge duration.
S314: and acquiring the gas content from the gas content set, and judging whether the gas content is less than or equal to a second preset content.
If not, go to S315.
If yes, go to step S316.
Specifically, before S314, a stop instruction is acquired, and when the state of the fuel cell is determined to be a normal stop state after the stop instruction is acquired, the last gas content is acquired from the set of gas contents of impurity gases.
The set of gas contents may be a set of gas contents determined after repeating S305 to S310 every preset time period.
Alternatively, the second predetermined content may be 0.01, 0.05, etc. Specifically, the first predetermined content is not limited in this application. In practical application, the second preset content can be determined according to actual requirements.
S315: the hydrogen discharge valve is controlled to be kept closed.
S316: and determining the second hydrogen discharging time according to the gas content and the first corresponding relation.
Wherein the second hydrogen discharge period indicates a period in which the fuel cell discharges hydrogen gas.
S317: and controlling the opening time period of the hydrogen discharge valve to be equal to the second hydrogen discharge time period.
The gas removal method provided by the embodiment of the invention comprises the following steps: the state of the fuel cell is acquired. And if the state of the fuel cell is a normal working state in a normal state, determining the gas content according to the actual output power, the preset output power and the power coefficient. And determining a first hydrogen exhaust duration according to the gas content and a preset first corresponding relation, and controlling the opening duration of the hydrogen exhaust valve to be equal to the first hydrogen exhaust duration. And if the state of the fuel cell is a normal stop state in the normal state, determining a second hydrogen discharge duration according to the gas content and the first corresponding relation, and controlling the opening duration of the hydrogen discharge valve to be equal to the second hydrogen discharge duration. And if the state of the fuel cell is a fault state, controlling the opening time of the hydrogen discharge valve to be equal to the preset hydrogen discharge time. In the above process, when the state of the fuel cell is changed, the hydrogen discharge time period corresponding to the changed state of the fuel cell is adopted, so that the hydrogen discharge method of the fuel cell has diversity.
Further, in the prior art, the impurity content of hydrogen in the hydrogen gas circuit can be detected through an impurity detection instrument, but because the detection instrument is high in cost, the detection instrument cannot be applied to the alpine plateau environment, and therefore the impurity detection instrument cannot be applied to the product of the fuel cell. In the application, the impurity content of the hydrogen in the hydrogen gas path is not required to be detected by an impurity detecting instrument, so that the cost is saved, and the method can be applied to the products of fuel cells.
Fig. 4 is a schematic structural diagram of a gas remover according to an embodiment of the present invention. As shown in fig. 4, the gas remover comprises: an acquisition module 41, a determination module 42, and a control module 43, wherein,
the obtaining module 41 is configured to obtain a state of the fuel cell, and if it is determined that the state of the fuel cell is a normal operating state, obtain actual output power and preset output power of the fuel cell;
the determining module 42 is configured to determine a first hydrogen exhaust duration according to the actual output power and the preset output power, where the first hydrogen exhaust duration indicates an opening duration of the hydrogen exhaust valve;
the control module 43 is configured to control the opening duration of the hydrogen discharge valve to be equal to the first hydrogen discharge duration.
The gas remover provided by this embodiment can be used to implement the technical solutions of the above method embodiments, and the implementation principle and technical effects are similar, which are not described herein again.
It should be noted that the gas remover provided in this embodiment may be applied to an electric vehicle, where the electric vehicle includes a fuel cell, the fuel cell includes a hydrogen path, and the hydrogen path includes a hydrogen discharge valve.
In a possible implementation, the determining module 41 is specifically configured to:
determining the gas content of impurity gas in the hydrogen path according to the actual output power and the preset output power;
and determining the first hydrogen discharging time length according to the gas content and a preset first corresponding relation, wherein the first corresponding relation comprises the corresponding relation between the gas content and the hydrogen discharging time length.
In another possible implementation, the determining module 41 is specifically configured to:
acquiring attribute information of the fuel cell, wherein the attribute information comprises a use duration and a model;
determining a power coefficient of the fuel cell according to the attribute information and the preset output power;
and determining the gas content according to the actual output power, the preset output power and the power coefficient.
In another possible implementation, the determining module 41 is specifically configured to:
determining the wear coefficient of the fuel cell according to the service life and a preset second corresponding relation, wherein the second corresponding relation comprises the corresponding relation between the service life and the wear coefficient;
determining the energy consumption coefficient of the fuel cell according to the model, the preset output power and a preset third corresponding relation, wherein the third corresponding relation comprises the corresponding relation between the model, the preset output power and the energy consumption coefficient;
and determining the power coefficient of the fuel cell according to the abrasion coefficient and the energy consumption coefficient.
In another possible implementation, the determining module 41 is specifically configured to:
judging whether the gas content is greater than or equal to a first preset content;
and if the gas content is greater than or equal to the first preset content, determining the first hydrogen discharge duration according to the gas content and the first corresponding relation.
In another possible implementation, the determining module 41 is further configured to:
if the fuel cell is determined to be in a normal stop state, judging whether the gas content is less than or equal to a second preset content, wherein the second preset content is less than the first preset content;
if the gas content is determined to be less than or equal to the second preset content, determining a second hydrogen discharge time length according to the gas content and the first corresponding relation, wherein the second hydrogen discharge time length indicates the time length for discharging hydrogen from the fuel cell;
and controlling the opening time of the hydrogen exhaust valve to be equal to the second hydrogen exhaust time.
In another possible implementation, the determining module 41 is further configured to:
and if the state of the fuel cell is determined to be a fault state, controlling the opening time of the hydrogen discharge valve to be equal to the preset hydrogen discharge time.
The gas remover provided by this embodiment can be used to implement the technical solutions of the above method embodiments, and the implementation principle and technical effects are similar, which are not described herein again.
An embodiment of the present invention provides a gas removal device, including: a processor, a memory, the processor coupled with the memory, wherein,
the memory is used for storing a computer program;
the processor is configured to execute a computer program stored in the memory, and when the computer program is executed, the processor performs the method according to any of the first aspect.
Alternatively, the memory may be separate or integrated with the processor.
When the memory is provided separately, the gas remover further comprises a bus for connecting the memory and the processor.
The present application further provides a computer-readable storage medium having instructions stored thereon, which when executed on a computer, cause the computer to perform a gas purging method in any of the method embodiments described above.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A gas elimination method, applied to an electric vehicle including a fuel cell including a hydrogen path including a hydrogen elimination valve, the method comprising:
acquiring the state of the fuel cell, and acquiring the actual output power and the preset output power of the fuel cell if the state of the fuel cell is determined to be the normal working state;
determining the gas content of impurity gas in the hydrogen path according to the actual output power and the preset output power;
determining a first hydrogen discharge duration according to the gas content and a preset first corresponding relation, wherein the first corresponding relation comprises the corresponding relation between the gas content and the hydrogen discharge duration, and the first hydrogen discharge duration indicates the opening duration of the hydrogen discharge valve;
controlling the opening duration of the hydrogen discharge valve to be equal to the first hydrogen discharge duration;
the gas content is determined according to the actual output power, the preset output power to determine a power difference value, and according to the product of the power difference value and a power coefficient of a fuel cell, wherein the power coefficient is the product of a wear coefficient and an energy consumption coefficient, the wear coefficient is obtained according to the service life of the fuel cell and a second corresponding relation, the energy consumption coefficient is obtained according to the model of the fuel cell, the preset output power and a third corresponding relation, the second corresponding relation comprises a corresponding relation between the service life and the wear coefficient, and the third corresponding relation comprises a corresponding relation between the model, the preset output power and the energy consumption coefficient.
2. The method of claim 1, wherein the determining the gas content of the impurity gas of the hydrogen gas in the hydrogen gas path according to the actual output power and the preset output power comprises:
acquiring attribute information of the fuel cell, wherein the attribute information comprises a use duration and a model;
determining a power coefficient of the fuel cell according to the attribute information and the preset output power;
and determining the gas content according to the actual output power, the preset output power and the power coefficient.
3. The method according to claim 1, wherein the determining the first hydrogen purging duration based on the gas content and a first predetermined correspondence comprises:
judging whether the gas content is greater than or equal to a first preset content;
and if the gas content is greater than or equal to the first preset content, determining the first hydrogen discharge duration according to the gas content and the first corresponding relation.
4. The method according to claim 3, wherein if it is determined that the state of the fuel cell is a normal stop state, the method further comprises:
judging whether the gas content is less than or equal to a second preset content, wherein the second preset content is less than the first preset content;
if the gas content is determined to be less than or equal to the second preset content, determining a second hydrogen discharge time length according to the gas content and the first corresponding relation, wherein the second hydrogen discharge time length indicates the time length for discharging hydrogen from the fuel cell;
and controlling the opening time of the hydrogen exhaust valve to be equal to the second hydrogen exhaust time.
5. The method according to any one of claims 1 to 4, wherein if it is determined that the state of the fuel cell is a failure state, the method further comprises:
and controlling the opening time of the hydrogen discharge valve to be equal to the preset hydrogen discharge time.
6. A gas remover, applied to an electric vehicle including a fuel cell, the fuel cell including a hydrogen path including a hydrogen discharge valve, the device comprising: an acquisition module, a first determination module, a second determination module, and a control module, wherein,
the acquisition module is used for acquiring the state of the fuel cell, and acquiring the actual output power and the preset output power of the fuel cell if the state of the fuel cell is determined to be the normal working state;
the first determining module is used for determining the gas content of impurity gas in the hydrogen gas path according to the actual output power and the preset output power;
the second determining module is used for determining a first hydrogen discharging duration according to the gas content and a preset first corresponding relation, wherein the first corresponding relation comprises the corresponding relation between the gas content and the hydrogen discharging duration, and the first hydrogen discharging duration indicates the opening duration of the hydrogen discharging valve;
the control module is used for controlling the opening duration of the hydrogen discharge valve to be equal to the first hydrogen discharge duration;
the gas content is determined according to the actual output power, the preset output power to determine a power difference value, and according to the product of the power difference value and a power coefficient of a fuel cell, wherein the power coefficient is the product of a wear coefficient and an energy consumption coefficient, the wear coefficient is obtained according to the service life of the fuel cell and a second corresponding relation, the energy consumption coefficient is obtained according to the model of the fuel cell, the preset output power and a third corresponding relation, the second corresponding relation comprises a corresponding relation between the service life and the wear coefficient, and the third corresponding relation comprises a corresponding relation between the model, the preset output power and the energy consumption coefficient.
7. The apparatus of claim 6, wherein the first determining module is specifically configured to:
acquiring attribute information of the fuel cell, wherein the attribute information comprises a use duration and a model;
determining a power coefficient of the fuel cell according to the attribute information and the preset output power;
and determining the gas content according to the actual output power, the preset output power and the power coefficient.
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