CN111490270A - Purge control method and apparatus for fuel cell - Google Patents
Purge control method and apparatus for fuel cell Download PDFInfo
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- CN111490270A CN111490270A CN201910081535.9A CN201910081535A CN111490270A CN 111490270 A CN111490270 A CN 111490270A CN 201910081535 A CN201910081535 A CN 201910081535A CN 111490270 A CN111490270 A CN 111490270A
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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
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Abstract
The invention provides a purification control method and a purification control device for a fuel cell, wherein the method comprises the following steps: acquiring state information of the fuel cell; determining whether a vehicle state monitoring condition is met according to the state information; judging whether the vehicle is in a hot standby mode or not according to the state information of the battery pack under the condition that the vehicle state monitoring condition is met; in the case where the vehicle is in the hot standby mode, it is determined that the purging operation of the fuel cell is delayed. Therefore, when the purification operation is determined to be needed according to the state information of the fuel cell, whether the purification operation needs to be delayed is determined by combining the current mode of the vehicle, so that the damage to the fuel cell caused by the purification operation of the fuel cell in the hot standby mode is avoided, and the safety and the high efficiency of the fuel cell are ensured.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a purification control method and a purification control device for a fuel cell.
Background
A fuel cell is an important power source for an electric vehicle, and generally has a fuel cell stack in which a plurality of fuel cell units are stacked. The fuel cell unit is, for example, laminated with a Membrane-electrode Assembly (MEA) and a separator. The MEA includes an anode on the right side of the MEA and a cathode on the left side of the MEA, which perform an electrochemical reaction by supplying hydrogen (fuel gas) to the anode and oxygen (oxidant gas) to the cathode. Nitrogen in the air supplied to the cathode and water generated in the cathode cross through an electrolyte membrane inside the fuel cell stack to move to the anode based on the operation of the fuel cell stack, while nitrogen reduces the performance of the fuel cell stack by reducing the partial pressure of hydrogen, and the generated water hinders the movement of hydrogen by blocking the flow path of the spacer channel. Therefore, the anodes need to be periodically cleaned to remove nitrogen from the air and liquid droplets (water) in the channels to maintain the stability of the fuel cell stack.
However, when the vehicle is decelerated, since there is no power demand at this time, the voltage of the fuel cell may quickly return to the vicinity of the open-circuit voltage value, and the purge of the fuel cell is started under the condition that the voltage of the fuel cell is at a high potential, which may cause degradation of the catalyst (Pt) and the electrolyte membrane, and is not good for the health of the reactor of the fuel cell.
Disclosure of Invention
In view of the above, the present invention is directed to a purging control method and apparatus for a fuel cell to control a purging operation of the fuel cell of a vehicle according to a current mode of the vehicle, and to delay the purging operation in a case where a voltage of the fuel cell of the vehicle is close to a high potential to ensure safety of the fuel cell and improve efficiency.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a purge control method of a fuel cell, applied to a vehicle having the fuel cell and a battery pack, the method comprising:
acquiring state information of the fuel cell;
determining whether a vehicle state monitoring condition is met or not according to the state information;
under the condition that the vehicle state monitoring condition is met, judging whether the vehicle is in a hot standby mode or not according to the state information of the battery pack;
determining to delay a purge operation of the fuel cell in a case where the vehicle is in the hot standby mode.
Further, before the step of acquiring the state information of the fuel cell, the method further includes:
determining whether a system fault exists in the vehicle according to the system information of the vehicle;
detecting a driver demand of the vehicle and reactor state information of the fuel cell in the absence of the system fault in the vehicle;
utilizing the fuel cell to power the vehicle according to the driver demand and the reactor status information;
wherein the reactor state information includes an output voltage and an output current of the reactor.
Further, the state information includes an anode impurity amount of the fuel cell, and the determining whether the vehicle state monitoring condition is satisfied according to the state information includes:
determining that the vehicle state monitoring condition is met under the condition that the anode impurity amount is larger than a preset anode impurity threshold value;
determining that the vehicle state monitoring condition is not satisfied in a case where the anode impurity amount is equal to or less than the anode impurity threshold value.
Further, the method further comprises:
and under the condition that the vehicle state detection condition is determined not to be met, supplying power to the vehicle according to the driver demand of the vehicle and the reactor state information of the fuel cell.
Further, the determining whether the vehicle is in a hot standby mode according to the state information of the battery pack when the vehicle state monitoring condition is satisfied includes:
determining whether the vehicle is in a normal driving state or not according to the state information of the vehicle;
determining whether the vehicle is in a deceleration state according to the state information of the vehicle in the case where the vehicle is in the normal running state;
acquiring state information of the battery pack in a case where the vehicle is in the decelerating state;
and judging whether the vehicle is in the hot standby mode or not according to the state information of the battery pack.
Further, the determining whether the vehicle is in the hot standby mode according to the state information of the battery pack includes:
determining that the vehicle is in the hot standby mode when the electric quantity of the battery pack is greater than a preset electric quantity threshold;
determining that the vehicle is not in the hot standby mode if the charge of the battery pack is less than or equal to the charge threshold.
Further, after the step of determining whether the vehicle is in a hot standby mode in a case where the vehicle state monitoring condition is satisfied, the method further includes:
starting a purge operation of the fuel cell in a case where the vehicle is not in the hot standby mode.
Compared with the prior art, the purification control method and the purification control device for the fuel cell have the following advantages:
according to the purification control method of the fuel cell, when the fuel cell is judged to need to be purified according to the state information of the fuel cell, whether the purification operation of the fuel cell is delayed or not is determined by combining the current mode of the vehicle, so that damage to the fuel cell due to the purification operation of the fuel cell in a hot standby mode is avoided, and the safety and the high efficiency of the fuel cell are ensured.
Meanwhile, the judgment operation of the hot standby mode is determined based on the charging state, so that the operation is simple, convenient and effective.
Another object of the present invention is to provide a purge control apparatus of a fuel cell to control a purge operation of the fuel cell of a vehicle according to a current mode of the vehicle, to ensure safety and improve efficiency of the fuel cell of the vehicle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a purge control apparatus of a fuel cell applied to a vehicle having the fuel cell and a battery pack, the apparatus comprising:
the information acquisition module is used for acquiring the state information of the fuel cell;
the condition determining module is used for determining whether a vehicle state monitoring condition is met or not according to the state information;
the mode judging module is used for judging whether the vehicle is in a hot standby mode or not according to the state information of the battery pack under the condition that the vehicle state monitoring condition is met;
an operation determination module to determine to delay a purge operation of the fuel cell if the vehicle is in the hot standby mode.
Further, the apparatus further comprises:
a failure determination module for determining whether a system failure exists in the vehicle according to system information of the vehicle before the step of acquiring the state information of the fuel cell;
an information detection module for detecting a driver demand of the vehicle and reactor state information of the fuel cell in a case where the vehicle does not have the system failure;
the power supply module is used for supplying power to the vehicle by using the fuel cell according to the driver demand and the reactor state information;
wherein the reactor state information includes an output voltage and an output current of the reactor.
Further, the state information includes an anode impurity amount of the fuel cell, and the condition determination module is configured to:
determining that the vehicle state monitoring condition is met under the condition that the anode impurity amount is larger than a preset anode impurity threshold value;
determining that the vehicle state monitoring condition is not satisfied in a case where the anode impurity amount is equal to or less than the anode impurity threshold value.
Further, the apparatus further comprises:
and the detection module is used for supplying power to the vehicle according to the driver demand of the vehicle and the reactor state information of the fuel cell under the condition that the vehicle state detection condition is determined not to be met.
Further, the mode determining module includes:
the state judgment submodule is used for determining whether the vehicle is in a normal running state or not according to the state information of the vehicle;
the speed determining submodule is used for determining whether the vehicle is in a deceleration state or not according to the state information of the vehicle under the condition that the vehicle is in the normal running state;
the charging state acquisition submodule is used for acquiring the state information of the battery pack under the condition that the vehicle is in the deceleration state;
and the mode judgment submodule is used for judging whether the vehicle is in the hot standby mode or not according to the state information of the battery pack.
Further, the state information of the battery pack includes an electric quantity of the battery pack, and the mode determination submodule is configured to:
determining that the vehicle is in the hot standby mode when the electric quantity of the battery pack is greater than a preset electric quantity threshold;
determining that the vehicle is not in the hot standby mode if the charge of the battery pack is less than or equal to the charge threshold.
Further, the apparatus further comprises:
a purge start module configured to start a purge operation of the fuel cell if the vehicle is not in a hot standby mode after the step of determining whether the vehicle is in the hot standby mode if the vehicle state monitoring condition is satisfied.
The advantages of the fuel cell purge control apparatus and the fuel cell purge control method are the same as those of the prior art, and are not described herein again.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a driving structure of a vehicle with a fuel cell according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of an embodiment of a purge control method for a fuel cell according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating specific steps of an embodiment of a purge control method for a fuel cell according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating specific steps of an embodiment of a purge control method for a fuel cell according to an embodiment of the present invention;
fig. 5 is a block diagram showing the configuration of an embodiment of a purge control apparatus for a fuel cell according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Before describing a specific embodiment of the present invention, it is necessary to describe a scenario in which the technical solution of the present invention is applied, as shown in fig. 1, a driving structure of a vehicle with a fuel cell connected to a DC/DC converter connected to an inverter of a motor of the vehicle. Further, the vehicle with a fuel cell further includes a battery pack for receiving and storing electric power from the fuel cell, while also being configured to supply electric power to an inverter of the motor. As the amount of impurities crossing the anode through the electrolyte membrane inside the stack increases in the fuel cell, the amount of hydrogen in the anode on the right side of the MEA decreases, thereby decreasing the reaction efficiency. Therefore, it is necessary to open the hydrogen purge valve at preset time intervals to perform a purge operation of the anode of the fuel cell, and impurities are generally discharged from the fuel gas passage using a fuel purge valve (abbreviated as FPV; english: fuel purge valve) provided on the anode system.
When the vehicle is continuously running, the fuel cell may experience a process in which the power demand suddenly becomes large and then there is no power demand immediately in the standby state, and the power controller of the vehicle may store the remaining power generated by the fuel cell during deceleration or/and interruption of regeneration in the battery pack. During subsequent vehicle acceleration, the power demand translates into a current demand and a voltage demand, respectively, with a slight time delay before the voltage settles within its target/desired range. On the other hand, when the vehicle is decelerating and there is no power demand on the fuel cell at all, the voltage of the fuel cell's reactor may quickly increase to near the open circuit voltage. If no power is needed, the voltage of the reactor is close to the OCV (open circuit voltage) (i.e., high potential condition), and the residence time is long, the voltage of the fuel cell is between 0.95V and 1.00V, and when the purge valve is opened, the catalyst (platinum) and the carrier (carbon) therein are oxidized, thereby losing the effective function thereof and reducing the service life and the operating efficiency of the fuel cell.
Therefore, according to the technical scheme provided by the invention, under the condition that the anode of the fuel cell has a purification requirement, whether the anode meets the condition of approaching OCV or not can be determined according to the mode of judging the vehicle, and whether the purification operation of the anode needs to be delayed or not can be further determined, so that the safety of the fuel cell is ensured, and the service life and the working efficiency of the fuel cell are improved.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 2, a flow chart of steps of an embodiment of a purge control method for a fuel cell according to the present application is shown, and the method is applied to a vehicle having a fuel cell, and specifically may include the following steps:
in step 201, state information of the fuel cell is acquired.
Illustratively, the state information of the fuel cell is used to indicate whether the fuel cell needs to perform a purge operation, that is, to judge whether the impurities of the anode are accumulated excessively.
Illustratively, since the state information is used to characterize the degree of accumulation of anode impurities, such as the amount of anode impurities including the fuel cell. Specifically, under the condition that the anode impurity amount is larger than a preset anode impurity threshold value, the condition of meeting the vehicle state monitoring condition is determined; determining that the vehicle state monitoring condition is not met under the condition that the anode impurity amount is less than or equal to the anode impurity threshold value; the vehicle state monitoring condition is used for monitoring whether the vehicle is in a hot standby mode, and the impurities at the anode of the fuel cell are judged not to reach the purification requirement according to the state information, so that the monitoring of the hot standby mode is not needed; otherwise the following operation of step 202 is required. And then whether the fuel cell needs to be purified or not can be determined according to the state information so as to ensure the reaction efficiency of the fuel cell.
In step 203, it is determined whether the vehicle is in the hot standby mode when the vehicle state monitoring condition is satisfied.
For example, after it is determined that the purging operation of the fuel cell is required, it is necessary to further judge the mode of the vehicle, that is, to avoid the voltage (potential) of the fuel cell from reaching a condition close to the OCV. In order to reduce the state deterioration of the FC (chinese: Fuel Cell; english: Fuel Cell) caused by the operation close to the OCV region during the normal operation of the vehicle, the Fuel Cell is not operated below the minimum power, but such a situation may occur: the fuel cell (when active), even if operating at its minimum power, is still higher than the power demand of the vehicle, i.e.: FC activation power > FC minimum power > vehicle power, so excess power will be absorbed by the battery pack of the vehicle, resulting in the SOC (chinese: state of Charge) of the battery pack reaching the maximum upper limit. Note that the maximum upper limit of the SOC of the battery pack is usually set to 80%. The power controller typically controls the SOC of the battery pack below a charge threshold (e.g., 80% based on the above description) to enable capture of regenerative braking energy, thereby improving fuel economy of the vehicle. However, if the fuel cell is completely shut down without power demand of the vehicle, although fuel consumption is reduced, the fuel cell still needs to be restarted, but rather the fuel cell is operated in the OCV region for a longer time, which leads to higher deterioration of the state of the fuel cell. Therefore, a Hot standby mode is introduced for the fuel cell, when the SOC of the battery pack reaches the SOC upper limit (for example 80%), the power controller is triggered to control the fuel cell to switch from a normal operation mode to a Hot standby mode (Hot Stand-byMode), wherein the Hot standby mode is not a complete off mode and belongs to an on state without power supply; when the vehicle runs under the condition that the fuel cell does not provide power, all power is supplied by the battery pack, so the SOC of the vehicle is reduced, and after the SOC is reduced to an upper limit (for example 80%) of the SOC, the power controller can control the operation mode of the fuel cell to switch between the hot standby mode and the normal operation mode again, namely, the fuel cell is transited from the hot standby mode to the normal operation mode.
In step 204, it is determined to delay the purging operation of the fuel cell in the case where the vehicle is in the hot standby mode.
For example, in the case where it is determined that the vehicle is in the hot standby mode, the purging operation of the fuel cell, i.e., the opening of the FPV, is delayed.
It should be noted that after the purging operation of the fuel cell is delayed, it is necessary to wait for the vehicle to start acceleration and then determine again, and whether the purging operation of the fuel cell can be started, that is, when the vehicle is decelerating or braking, although the purge control operation is required, it is still necessary to wait for the driver's request (to accelerate the vehicle) until the purging operation of the fuel cell can be performed after the vehicle is started to accelerate, that is, the vehicle is no longer in the hot standby state.
In summary, according to the technical solution provided by the present application, the state information of the fuel cell is obtained; determining whether a vehicle state monitoring condition is met according to the state information; judging whether the vehicle is in a hot standby mode or not according to the state information of the battery pack under the condition that the vehicle state monitoring condition is met; in the case where the vehicle is in the hot standby mode, it is determined that the purging operation of the fuel cell is delayed. Therefore, when the purification operation is determined to be needed according to the state information of the fuel cell, whether the purification operation needs to be delayed is determined by combining the current mode of the vehicle, so that damage to the fuel cell caused by the purification operation on the fuel cell in the hot standby mode is avoided, and the safety and the high efficiency of the fuel cell are ensured.
Referring to fig. 3, a flow chart of steps of an embodiment of a purge control method for a fuel cell according to the present application is shown, which further includes, before step 201, the steps of:
By way of example, a system failure may include: the leakage of the hydrogen storage pipeline, the failure of a high-voltage circuit and the like cause the failure of normal running of the vehicle. The system information of the vehicle is obtained by a central controller (e.g., an electronic control Unit) of the vehicle as system information, and then whether a system fault exists at present is determined according to a safety threshold preset in an ECU of the vehicle. After the vehicle is started, safety detection of the vehicle is started, whether the vehicle can be started normally is determined, the vehicle can be started normally when no system fault exists, and otherwise, troubleshooting is required to be carried out so that the vehicle can run normally when no system fault exists.
In the absence of a system fault with the vehicle, driver demand of the vehicle and reactor status information of the fuel cell are detected, step 206.
Wherein the reactor state information includes an output voltage and an output current of the reactor. The current state of the reactor, such as whether the reactor works normally or not, whether a fault exists or not and the like, is confirmed by utilizing the output voltage and the output current of the reactor; the driver demand of the vehicle refers to a demand of the driver for performing operations such as acceleration, deceleration or braking on the vehicle according to actual road condition information.
And step 207, utilizing the fuel cell to supply power to the vehicle according to the driver demand and the reactor state information.
In a specific application, the reactor state information is confirmed by continuously checking the fluid thermodynamic boundary conditions (pressure, temperature, mass flow, etc.) and electrical output or parameters, etc. of the reactor. For example, if the driver wants to accelerate the automobile, the control system will simultaneously read the reactor state information from the idle state, and realize the regulation and control of the gas flow, the pressure and the like of the fuel cell to supply power to the automobile.
In addition, the central control unit of the vehicle detects the state information of the fuel cell within a preset time interval, determines whether a vehicle state monitoring condition is satisfied, and when the vehicle detection condition is satisfied, performs the operation of step 203 to further perform the judgment of the mode in which the vehicle is located; otherwise, it indicates that the impurities of the anode of the fuel cell do not reach a certain threshold, and no purging operation is needed, and the fuel cell or the battery pack may be selected to supply power to the vehicle according to the current driver demand and the actual state information of the fuel cell reactor, so that the vehicle may continue to run, that is, step 208 may be performed:
and step 208, under the condition that the vehicle state detection condition is determined not to be met, supplying power to the vehicle according to the driver requirement of the vehicle and the reactor state information of the fuel cell.
It should be noted that, when it is determined that the vehicle is not in the hot standby mode through step 203, that is, when the purging operation for the fuel cell is started without causing damage to the fuel cell, the operation of step 209, that is, the purging operation is started:
in step 209, in the case where the vehicle is not in the hot standby mode, the purge operation of the fuel cell is started.
Referring to fig. 4, which shows a flowchart illustrating specific steps of an embodiment of the purging control method for a fuel cell of the present application, the determining whether the vehicle is in the hot standby mode in case of satisfying the vehicle state monitoring condition in step 203 includes the following steps:
For example, the normal driving state may be understood as a state in which the reactor of the fuel cell consumes fuel at a stable rate (or, the SOC of the battery pack is stably consumed) to drive the vehicle without a system failure of the vehicle. It should be noted that, if the vehicle is in a manned state, the state can be directly determined to be a normal driving state; if the vehicle is in the unmanned state, the driving mode of the vehicle can be acquired by the ECU of the vehicle, and the normal running state can be determined using the SOC consumption data of the fuel cell or the battery pack.
In step 2032, in case the vehicle is in a normal running state, it is determined whether the vehicle is in a decelerating state or not based on the state information of the vehicle.
For example, information about the state of the vehicle, such as the rotational speed of the wheels, the state of the brake pedal, such as whether the brake pedal is activated, whether the fuel cell is no longer required to supply power, etc., is obtained to determine whether the vehicle is in a decelerating state.
In step 2033, in the case where the vehicle is in a decelerating state, the state information of the battery pack is acquired.
In a specific application, the state information of the battery pack includes a charge level (SOC) of the battery pack to determine whether the vehicle is currently in a hot standby mode.
Determining that the vehicle is in a hot standby mode under the condition that the electric quantity of the battery pack is greater than a preset electric quantity threshold; in the case where the charge level of the battery pack is less than or equal to the charge level threshold, it is determined that the vehicle is not in the hot standby mode. For example, the power threshold is preferably 80%, or other threshold determined according to actual conditions, and the invention is not limited in particular. Therefore, in the case of deceleration of the vehicle, without power supply from the fuel cell, it is possible to determine whether the vehicle is in the hot standby mode, that is, determine whether the current electric quantity of the battery pack exceeds the electric quantity threshold value, and if so, indicate that the vehicle is in the hot standby mode, suspend the start of the purging operation of the fuel cell, that is, perform the operation of step 204, so as to ensure the safety and stability of the fuel cell; otherwise, the fuel cell is not in the hot standby mode currently, and the purging operation of the fuel cell can be started to ensure the efficiency of the fuel cell.
Referring to fig. 5, which shows a block diagram of an embodiment of a purge control apparatus for a fuel cell according to the present application, applied to a vehicle having a fuel cell and a battery pack, the apparatus 500 includes:
an information acquisition module 510 for acquiring status information of the fuel cell.
A condition determining module 520, configured to determine whether the vehicle condition monitoring condition is satisfied according to the state information.
And a mode judging module 530 for judging whether the vehicle is in the hot standby mode according to the state information of the battery pack if the vehicle state monitoring condition is satisfied.
An operation determination module 540 for determining to delay the purging operation of the fuel cell if the vehicle is in a hot standby mode.
Optionally, the apparatus 500 further comprises:
and a fault determination module for determining whether there is a system fault in the vehicle according to the system information of the vehicle before the step of acquiring the state information of the fuel cell.
And the information detection module is used for detecting the driver demand of the vehicle and the reactor state information of the fuel cell under the condition that the vehicle has no system fault.
And the power supply module is used for supplying power to the vehicle by using the fuel cell according to the driver demand and the reactor state information.
Wherein the reactor state information includes an output voltage and an output current of the reactor.
Optionally, the state information includes an anode impurity amount of the fuel cell, and the condition determining module is configured to:
determining that vehicle state monitoring conditions are met under the condition that the anode impurity amount is larger than a preset anode impurity threshold value;
and determining that the vehicle state monitoring condition is not satisfied under the condition that the anode impurity amount is less than or equal to the anode impurity threshold value.
Optionally, the apparatus 500 further comprises:
and the detection module is used for supplying power to the vehicle according to the driver demand of the vehicle and the reactor state information of the fuel cell under the condition that the vehicle state detection condition is determined not to be met.
Optionally, the mode determining module includes:
the state judgment submodule is used for determining whether the vehicle is in a normal running state or not according to the state information of the vehicle;
the speed determining submodule is used for determining whether the vehicle is in a deceleration state or not according to the state information of the vehicle under the condition that the vehicle is in a normal running state;
the charging state acquisition submodule is used for acquiring the state information of the battery pack under the condition that the vehicle is in a deceleration state;
and the mode judgment submodule is used for judging whether the vehicle is in a hot standby mode or not according to the state information of the battery pack.
Optionally, the state information of the battery pack includes an electric quantity of the battery pack, and the mode determination submodule is configured to:
determining that the vehicle is in a hot standby mode under the condition that the electric quantity of the battery pack is greater than a preset electric quantity threshold value;
in the case where the charge level of the battery pack is less than or equal to the charge level threshold, it is determined that the vehicle is not in the hot standby mode.
Optionally, the apparatus 500 further comprises:
and a purge start module for starting a purge operation of the fuel cell if the vehicle is not in the hot standby mode after the step of determining whether the vehicle is in the hot standby mode if the vehicle state monitoring condition is satisfied.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (14)
1. A purge control method of a fuel cell, characterized by being applied to a vehicle having a fuel cell and a battery pack, the method comprising:
acquiring state information of the fuel cell;
determining whether a vehicle state monitoring condition is met or not according to the state information;
under the condition that the vehicle state monitoring condition is met, judging whether the vehicle is in a hot standby mode or not according to the state information of the battery pack;
determining to delay a purge operation of the fuel cell in a case where the vehicle is in the hot standby mode.
2. The method according to claim 1, characterized in that, before the step of acquiring the state information of the fuel cell, the method further comprises:
determining whether a system fault exists in the vehicle according to the system information of the vehicle;
detecting a driver demand of the vehicle and reactor state information of the fuel cell in the absence of the system fault in the vehicle;
utilizing the fuel cell to power the vehicle according to the driver demand and the reactor status information;
wherein the reactor state information includes an output voltage and an output current of the reactor.
3. The method according to claim 1 or 2, wherein the state information includes an anode impurity amount of the fuel cell, and the determining whether a vehicle state monitoring condition is satisfied according to the state information includes:
determining that the vehicle state monitoring condition is met under the condition that the anode impurity amount is larger than a preset anode impurity threshold value;
determining that the vehicle state monitoring condition is not satisfied in a case where the anode impurity amount is equal to or less than the anode impurity threshold value.
4. The method of claim 1, further comprising:
and under the condition that the vehicle state detection condition is determined not to be met, supplying power to the vehicle according to the driver demand of the vehicle and the reactor state information of the fuel cell.
5. The method according to claim 1 or 2, wherein the determining whether the vehicle is in a hot standby mode according to the state information of the battery pack in the case where the vehicle state monitoring condition is satisfied includes:
determining whether the vehicle is in a normal driving state or not according to the state information of the vehicle;
determining whether the vehicle is in a deceleration state according to the state information of the vehicle in the case where the vehicle is in the normal running state;
acquiring state information of the battery pack in a case where the vehicle is in the decelerating state;
and judging whether the vehicle is in the hot standby mode or not according to the state information of the battery pack.
6. The method of claim 5, wherein the state information of the battery pack includes a charge level of the battery pack, and wherein determining whether the vehicle is in the hot standby mode according to the state information of the battery pack comprises:
determining that the vehicle is in the hot standby mode when the electric quantity of the battery pack is greater than a preset electric quantity threshold;
determining that the vehicle is not in the hot standby mode if the charge of the battery pack is less than or equal to the charge threshold.
7. The method of claim 1, wherein after the step of determining whether the vehicle is in a hot standby mode if the vehicle condition monitoring condition is satisfied, the method further comprises:
starting a purge operation of the fuel cell in a case where the vehicle is not in the hot standby mode.
8. A purge control apparatus of a fuel cell, characterized by being applied to a vehicle having a fuel cell and a battery pack, the apparatus comprising:
the information acquisition module is used for acquiring the state information of the fuel cell;
the condition determining module is used for determining whether a vehicle state monitoring condition is met or not according to the state information;
the mode judging module is used for judging whether the vehicle is in a hot standby mode or not according to the state information of the battery pack under the condition that the vehicle state monitoring condition is met;
an operation determination module to determine to delay a purge operation of the fuel cell if the vehicle is in the hot standby mode.
9. The apparatus of claim 8, further comprising:
a failure determination module for determining whether a system failure exists in the vehicle according to system information of the vehicle before the step of acquiring the state information of the fuel cell;
an information detection module for detecting a driver demand of the vehicle and reactor state information of the fuel cell in a case where the vehicle does not have the system failure;
the power supply module is used for supplying power to the vehicle by using the fuel cell according to the driver demand and the reactor state information;
wherein the reactor state information includes an output voltage and an output current of the reactor.
10. The apparatus according to claim 8 or 9, wherein the state information includes an anode impurity amount of the fuel cell, and the condition determination module is configured to:
determining that the vehicle state monitoring condition is met under the condition that the anode impurity amount is larger than a preset anode impurity threshold value;
determining that the vehicle state monitoring condition is not satisfied in a case where the anode impurity amount is equal to or less than the anode impurity threshold value.
11. The apparatus of claim 8, further comprising:
and the detection module is used for supplying power to the vehicle according to the driver demand of the vehicle and the reactor state information of the fuel cell under the condition that the vehicle state detection condition is determined not to be met.
12. The apparatus according to claim 8 or 9, wherein the mode determining module comprises:
the state judgment submodule is used for determining whether the vehicle is in a normal running state or not according to the state information of the vehicle;
the speed determining submodule is used for determining whether the vehicle is in a deceleration state or not according to the state information of the vehicle under the condition that the vehicle is in the normal running state;
the charging state acquisition submodule is used for acquiring the state information of the battery pack under the condition that the vehicle is in the deceleration state;
and the mode judgment submodule is used for judging whether the vehicle is in the hot standby mode or not according to the state information of the battery pack.
13. The apparatus of claim 12, wherein the state information of the battery pack comprises a charge level of the battery pack, and the mode determination submodule is configured to:
determining that the vehicle is in the hot standby mode when the electric quantity of the battery pack is greater than a preset electric quantity threshold;
determining that the vehicle is not in the hot standby mode if the charge of the battery pack is less than or equal to the charge threshold.
14. The apparatus of claim 8, further comprising:
a purge start module configured to start a purge operation of the fuel cell if the vehicle is not in a hot standby mode after the step of determining whether the vehicle is in the hot standby mode if the vehicle state monitoring condition is satisfied.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080003465A1 (en) * | 2004-08-18 | 2008-01-03 | Gm Global Technology Operations, Inc. | Method for Shutting Down a Fuel Cell System Using an Air Purge |
| CN101490884A (en) * | 2006-10-18 | 2009-07-22 | 丰田自动车株式会社 | Fuel cell system |
| CN104979571A (en) * | 2014-04-14 | 2015-10-14 | 现代自动车株式会社 | Purge control system and method for fuel cell |
| CN108206294A (en) * | 2016-12-16 | 2018-06-26 | 现代自动车株式会社 | The method for controlling the driving of fuel cell system |
-
2019
- 2019-01-28 CN CN201910081535.9A patent/CN111490270B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080003465A1 (en) * | 2004-08-18 | 2008-01-03 | Gm Global Technology Operations, Inc. | Method for Shutting Down a Fuel Cell System Using an Air Purge |
| CN101490884A (en) * | 2006-10-18 | 2009-07-22 | 丰田自动车株式会社 | Fuel cell system |
| CN104979571A (en) * | 2014-04-14 | 2015-10-14 | 现代自动车株式会社 | Purge control system and method for fuel cell |
| CN108206294A (en) * | 2016-12-16 | 2018-06-26 | 现代自动车株式会社 | The method for controlling the driving of fuel cell system |
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