CN114220992B - Purging system and purging method for fuel cell vehicle - Google Patents
Purging system and purging method for fuel cell vehicle Download PDFInfo
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- CN114220992B CN114220992B CN202111279826.2A CN202111279826A CN114220992B CN 114220992 B CN114220992 B CN 114220992B CN 202111279826 A CN202111279826 A CN 202111279826A CN 114220992 B CN114220992 B CN 114220992B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling 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
- H01M8/04223—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
- H01M8/04228—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 during shut-down
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
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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
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- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
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- Fuel Cell (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The application discloses a purging system and a purging method of a fuel cell vehicle, comprising a hydrogen system controller, a whole vehicle controller and a fuel cell controller which are electrically connected in sequence; the hydrogen system controller is configured to: when the whole car key switch of the fuel cell car is switched to the power-off gear, controlling a hydrogen supply system of the fuel cell car to supply hydrogen to a fuel cell engine of the fuel cell car, so that the fuel cell engine is purged based on the hydrogen supplied by the hydrogen supply system; after the key switch of the whole vehicle is switched to a power-off gear, monitoring the duration of supplying hydrogen for the fuel cell engine by the hydrogen supply system; when the duration is equal to the target duration, the hydrogen supply system is controlled to stop supplying hydrogen to the fuel cell engine, and the sleep state is entered after the hydrogen supply system stops supplying hydrogen. The application can meet the hydrogen supply requirement of the shutdown purging of the fuel cell engine, and simultaneously reduces the power consumption of the controller to an auxiliary power supply (such as a whole vehicle storage battery).
Description
Technical Field
The application relates to the technical field of new energy, in particular to a purging system and a purging method of a fuel cell vehicle.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electric energy, and is also called an electrochemical generator. The fuel cell converts the Gibbs free energy part in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so that the efficiency is high; in addition, fuel and oxygen are used as raw materials for the fuel cell, and no mechanical transmission component is used, so that the discharged harmful gas is very little, and the service life is long. For example, a hydrogen fuel cell vehicle using a hydrogen fuel cell as a power source can substantially avoid emission of harmful gases, compared to a conventional fuel vehicle.
In the case of hydrogen fuel cell engines, water is produced during operation due to the special characteristics of the proton exchange membrane reactor, and if the humidity of the fuel cell engine is high for a long period of time, the service life of the fuel cell engine is easily shortened. In order to prolong the service life of the fuel cell engine system, an auxiliary power supply is used for providing electric energy before the fuel cell engine is stopped, so that the hydrogen supply system continuously supplies hydrogen for the fuel cell engine for a period of time, the requirement for purging the hydrogen in the fuel cell engine is met, residual moisture is purged completely, and the humidity in the fuel cell system is not too high.
However, when the hydrogen supply system continues to supply hydrogen to the fuel cell engine and the fuel cell engine is purged, if the hydrogen system controller controlling the hydrogen supply system cannot receive the purge completion signal, the hydrogen system controller will control the hydrogen supply system to continuously supply hydrogen, resulting in higher power consumption for purging.
Disclosure of Invention
The embodiment of the application solves the technical problem of higher power consumption for supplying hydrogen for purging in the prior art by providing the purging system and the purging method of the fuel cell vehicle, and realizes the technical effect of reducing the power consumption for hydrogen purging.
In a first aspect, the application provides a fuel cell vehicle purging system, comprising a hydrogen system controller, a whole vehicle controller and a fuel cell controller which are electrically connected in sequence;
the hydrogen system controller is configured to:
when the whole car key switch of the fuel cell car is switched to the power-off gear, controlling a hydrogen supply system of the fuel cell car to supply hydrogen to a fuel cell engine of the fuel cell car, so that the fuel cell engine is purged based on the hydrogen supplied by the hydrogen supply system;
after the key switch of the whole vehicle is switched to a power-off gear, monitoring the duration of supplying hydrogen for the fuel cell engine by the hydrogen supply system;
when the duration is equal to the target duration, the hydrogen supply system is controlled to stop supplying hydrogen to the fuel cell engine, and the sleep state is entered after the hydrogen supply system stops supplying hydrogen.
Further, the fuel cell controller is electrically connected with the whole vehicle controller through the first network segment, and the hydrogen system controller is electrically connected with the whole vehicle controller through the second network segment.
Further, the whole vehicle controller is used for:
when the key switch of the whole vehicle is switched to a power-off gear, a target signal is sent to the fuel cell controller, so that the fuel cell controller controls the fuel cell engine to delay power-down, and the purging is performed based on the hydrogen supplied by the hydrogen supply system of the fuel cell vehicle.
Further, the fuel cell controller is configured to:
receiving a target signal sent by a whole vehicle controller;
in response to the target signal, the fuel cell engine is controlled to delay powering down so that the fuel cell engine is purged based on the hydrogen supplied by the hydrogen supply system.
In a second aspect, the present application provides a fuel cell vehicle purging method, applied to a hydrogen system controller, the method comprising:
when the whole car key switch of the fuel cell car is switched to the power-off gear, controlling a hydrogen supply system of the fuel cell car to supply hydrogen to a fuel cell engine of the fuel cell car, so that the fuel cell engine is purged based on the hydrogen supplied by the hydrogen supply system;
after the key switch of the whole vehicle is switched to a power-off gear, monitoring the duration of supplying hydrogen for the fuel cell engine by the hydrogen supply system;
when the duration is equal to the target duration, the hydrogen supply system is controlled to stop supplying hydrogen to the fuel cell engine, and the sleep state is entered after the hydrogen supply system stops supplying hydrogen.
Further, when the duration is less than the target duration and the fuel cell engine completes purging and a purge complete signal is sent, the method further comprises:
in response to the purge completion signal, the hydrogen supply system is controlled to stop supplying hydrogen gas to the fuel cell engine, and to enter a sleep state after the hydrogen supply system stops supplying hydrogen gas.
In a third aspect, the present application provides a purging method for a fuel cell vehicle, which is applied to a vehicle controller, and the method includes:
when the whole car key switch of the fuel cell car is switched to the power-off gear, a target signal is sent to a fuel cell controller of the fuel cell car, so that the fuel cell controller controls a fuel cell engine to delay power-down, and the purging is performed based on hydrogen supplied by a hydrogen supply system of the fuel cell car.
Further, after the entire car key switch is switched to the power-off gear, the method further comprises:
when the fuel cell controller sends a purging completion signal, the purging completion signal is received through the first network segment, and the purging completion signal is forwarded to the hydrogen system controller of the fuel cell vehicle through the second network segment, so that the hydrogen system controller controls the hydrogen supply system to stop supplying hydrogen to the fuel cell engine; wherein the first network segment and the second network segment are different.
In a fourth aspect, the present application provides a fuel cell vehicle purging method, applied to a fuel cell controller, the method comprising:
receiving a target signal sent by a whole vehicle controller of the fuel cell vehicle, wherein the target signal is generated when a whole vehicle key switch of the fuel cell vehicle is switched to a power-off gear;
in response to the target signal, the fuel cell engine is controlled to delay power down so that the fuel cell engine is purged based on hydrogen supplied by a hydrogen supply system of the fuel cell vehicle.
Further, when the fuel cell engine completes purging, the method further comprises:
and sending a purging completion signal to the whole vehicle controller, so that the whole vehicle controller forwards the purging completion signal to a hydrogen system controller of the fuel cell vehicle to control the hydrogen supply system to stop supplying hydrogen to the fuel cell engine.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
according to the purging system for the fuel cell vehicle, when the key switch of the whole vehicle is switched to the power-off gear, the hydrogen supply system can be controlled to supply hydrogen for the fuel cell engine, so that the fuel cell engine can be purged based on the hydrogen supplied by the hydrogen supply system. When the duration of the hydrogen supply system supplying hydrogen gas to the fuel cell engine reaches the target duration, the hydrogen supply system may be controlled to stop supplying hydrogen gas to the fuel cell engine and enter a sleep state after the hydrogen supply system stops supplying hydrogen gas. Therefore, the purging system of the fuel cell vehicle provided by the application can meet the hydrogen supply requirement of shutdown purging of the fuel cell engine, and simultaneously reduce the power consumption of the controller on an auxiliary power supply (such as a whole vehicle storage battery). When the duration of the hydrogen supply system supplying hydrogen to the fuel cell engine reaches the target duration, the hydrogen supply system stops supplying hydrogen, so that the situation that the hydrogen is stopped due to the fact that the driver is erroneously operated to switch to a power-off gear can be avoided; the condition that the hydrogen supply system is in a hydrogen supply state for a long time because the purging of the fuel cell engine is completed but the completion signal is not timely transmitted to the hydrogen system controller due to communication failure can be avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a purging system for a fuel cell vehicle according to the present application;
FIG. 2 is a schematic diagram of a purge flow scheme for matching with a fuel cell vehicle purge system provided by the present application;
FIG. 3 is a schematic flow diagram of a hydrogen system controller provided by the present application during a purge process;
fig. 4 is a schematic flow chart of the whole vehicle controller in the purging process;
fig. 5 is a schematic flow chart of the fuel cell controller provided by the application in the purging process.
Detailed Description
The embodiment of the application solves the technical problem of higher power consumption for supplying hydrogen for purging in the prior art by providing the purging system of the fuel cell vehicle.
The technical scheme of the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:
a purging system of a fuel cell vehicle comprises a hydrogen system controller, a whole vehicle controller and a fuel cell controller which are electrically connected in sequence; the hydrogen system controller is configured to: when the whole car key switch of the fuel cell car is switched to the power-off gear, controlling a hydrogen supply system of the fuel cell car to supply hydrogen to a fuel cell engine of the fuel cell car, so that the fuel cell engine is purged based on the hydrogen supplied by the hydrogen supply system; after the key switch of the whole vehicle is switched to a power-off gear, monitoring the duration of supplying hydrogen for the fuel cell engine by the hydrogen supply system; when the duration is equal to the target duration, the hydrogen supply system is controlled to stop supplying hydrogen to the fuel cell engine, and the sleep state is entered after the hydrogen supply system stops supplying hydrogen.
The purging system for the fuel cell vehicle can meet the hydrogen supply requirement of shutdown purging of the fuel cell engine, and meanwhile, the power consumption of the controller to an auxiliary power supply (such as a whole vehicle storage battery) is reduced. When the duration of the hydrogen supply system supplying hydrogen to the fuel cell engine reaches the target duration, the hydrogen supply system stops supplying hydrogen, so that the situation that the hydrogen is stopped due to the fact that the driver is erroneously operated to switch to a power-off gear can be avoided; the situation that the hydrogen supply system is in a hydrogen supply state for a long time because the purging of the fuel cell engine is finished but the completion signal is not timely transmitted to the hydrogen system controller due to the communication fault can be avoided, and the power consumption of an auxiliary power supply (such as a whole vehicle storage battery) can be reduced.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
First, the term "and/or" appearing herein is merely an association relationship describing associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
The present embodiment provides a Fuel Cell vehicle purge system as shown in fig. 1, which includes a hydrogen system controller (Hydrogen Management System, HMS), a whole vehicle controller (Vehicle Control Unit, VCU), and a Fuel Cell controller (FCU) electrically connected in this order. The hydrogen system controller is also electrically connected with the hydrogen supply system and is used for controlling the hydrogen supply system to supply hydrogen to the fuel cell engine. The fuel cell controller is electrically connected with the fuel cell engine, and the fuel cell controller controls the fuel cell engine to respond to the power of the whole vehicle or delay the power-down to purge.
The fuel cell controller is electrically connected with the whole vehicle controller through a first network segment, and the hydrogen system controller is electrically connected with the whole vehicle controller through a second network segment. That is, the fuel cell controller interacts with the overall vehicle controller via a first network segment (e.g., CAN1 in fig. 1), and the hydrogen system controller interacts with the overall vehicle controller via a second network segment (e.g., CAN2 in fig. 1).
Because the whole vehicle is complex, the mutual information between the controllers on the whole vehicle is huge, therefore, the fuel cell controller is distributed to the first network segment, the hydrogen system controller is distributed to the second network segment, the whole vehicle controller is used as an intermediate medium between the hydrogen system controller and the fuel cell controller (namely, the whole vehicle controller is used as a gateway), the information interaction between the hydrogen management system controller and the fuel cell controller is realized, the problems of information omission among the controllers and the like can be avoided, and the accuracy of the whole vehicle control is further improved.
The whole car key switch and the hydrogen system controller share a second network section, and the whole car key switch mainly sends a whole car key position state signal to the hydrogen system controller and the whole car controller according to the second network section. The key state has four kinds, including outage keeps OFF (OFF keeps OFF), annex circular telegram keep OFF (ACC keeps OFF), full car circular telegram keep OFF (ON keeps OFF) and ignition keep OFF (IGN keeps OFF), wherein in ON keeps OFF and IGN keeps OFF the state, and the full car key switch can last the wake-up electricity of output high level ON the second network segment.
With reference to fig. 2, when the hydrogen system controller detects the wake-up electricity on the second network segment, the wake-up electricity is activated to enter a working state, so as to control whether the hydrogen supply system supplies hydrogen to the fuel cell engine. And the whole vehicle controller and the fuel cell controller can also enter into working states, and the fuel cell engine can also start to run. When the hydrogen system controller detects a low level on the second network segment, it is ready to enter a sleep state, which will not be described in detail.
When the fuel cell engine needs hydrogen supply, the fuel cell controller sends a hydrogen supply request signal to the whole vehicle controller through the first network segment, the whole vehicle controller forwards the hydrogen supply request signal to a second network segment where the hydrogen system controller is located in time after detecting the hydrogen supply request signal on the first network segment, and the hydrogen system controller detects and responds to the hydrogen supply request signal on the second network segment so as to control the hydrogen supply system to supply hydrogen to the fuel cell engine.
When the whole vehicle key switch is switched to the OFF gear (for example, the ON gear is switched to the OFF gear, or the IGN gear is switched to the OFF gear), the whole vehicle key switch stops outputting the high-level wake-up power to the second network segment, i.e., the whole vehicle key switch outputs the low-level signal to the second network segment.
The hydrogen system controller can continuously detect whether the wake-up electricity ON the second network segment continuously exists, and when the whole car key switch leaves the ON gear or the IGN gear and enters the OFF gear, the whole car controller and the hydrogen system controller can detect a low-level signal ON the second network segment.
When the hydrogen system controller detects the low-level signal on the second network segment, the hydrogen system controller does not immediately sleep, but performs the following two operations, on one hand, the hydrogen system controller controls the hydrogen supply system to supply hydrogen for the fuel cell engine, and on the other hand, the hydrogen system controller starts an internal timer to time the duration of the low-level signal or monitor the duration of the hydrogen supply system to supply hydrogen for the fuel cell engine.
When the whole vehicle controller detects a low-level signal on the second network segment, the whole vehicle controller does not immediately sleep, but forwards the low-level signal detected on the second network segment to the first network segment, or the whole vehicle controller generates a target signal according to the low-level signal on the second network segment and sends the target signal to the first network segment, and the fuel cell controller detects the target signal from the first network segment and controls the fuel cell engine to delay power down and realize purging based on hydrogen supplied by the hydrogen supply system.
The hydrogen system controller monitors the timer, and when the length of time the hydrogen supply system supplies hydrogen to the fuel cell engine does not reach the target length of time T, the hydrogen system controller detects a purge completion signal sent by the whole vehicle controller on the second network segment (the purge completion signal of the whole vehicle controller is detected from the first network segment, and the purge completion signal on the first network segment is sent by the fuel cell controller), the hydrogen system controller controls the hydrogen supply system to stop supplying hydrogen to the fuel cell engine, and after the hydrogen supply system stops supplying hydrogen to the fuel cell engine, the hydrogen system controller enters a sleep state. The whole vehicle controller and the fuel cell controller also enter a dormant state, and the fuel cell engine is also shut down.
When the hydrogen supply system has reached the target time period T for supplying hydrogen to the fuel cell engine, and the hydrogen system controller still does not detect the purge completion signal sent by the whole vehicle controller on the second network segment, then it can be considered that the communication between the whole vehicle controller and the hydrogen management controller is interrupted, or the communication between the whole vehicle controller and the fuel cell controller is interrupted, so that the fuel cell controller cannot transmit the purge completion signal to the hydrogen system controller through the whole vehicle controller. At this time, the hydrogen system controller defaults to complete purging, and then controls the hydrogen supply system to stop supplying hydrogen gas to the fuel cell engine, and after the hydrogen supply system stops supplying hydrogen gas to the fuel cell engine, the hydrogen system controller enters a sleep state. And the whole vehicle controller and the fuel cell controller also enter a dormant state, and the fuel cell engine is also shut down.
After the whole car key switch is in the OFF gear, the hydrogen system controller, the whole car controller, the fuel cell controller and other parts are powered by the auxiliary power supply, and in order to ensure that the whole car can normally run, the electric quantity of the auxiliary power supply is required to be ensured to be above a preset threshold value, so that the electric quantity of the auxiliary power supply distributed to the purging is limited.
In the related art, when the hydrogen system controller controls the hydrogen supply system to supply hydrogen to the fuel cell engine so as to support the purging of the fuel cell engine, if the hydrogen system controller does not receive a purging completion signal, the hydrogen system controller continuously supplies hydrogen and also continuously uses the electric quantity of the auxiliary power supply, so that the electric quantity of the auxiliary power supply is lower than a preset threshold value, and the normal operation of the whole vehicle is affected. In order to solve the problem, the embodiment relies on the hydrogen system controller to perform timing judgment, when the time period of the hydrogen supply system supplying hydrogen to the fuel cell engine for purging reaches the target time period and the purging completion signal is not received yet, the hydrogen supply system is controlled to stop supplying hydrogen to the fuel cell engine, and the hydrogen system controller itself also enters a dormant state, so that the electric quantity of an auxiliary power supply can be saved, and the power consumption for purging is reduced.
The target duration T of the hydrogen system control may be determined according to the purge requirement of the fuel cell engine and the remaining power of the auxiliary power supply, and the specific determination manner may refer to the related art, which is not described herein.
In summary, in the purging system for a fuel cell vehicle provided in this embodiment, when the key switch of the whole vehicle is switched to the power-off gear, the hydrogen supply system may be controlled to supply hydrogen to the fuel cell engine, so that the fuel cell engine is purged based on the hydrogen supplied by the hydrogen supply system, and when the duration of supplying hydrogen to the fuel cell engine by the hydrogen supply system reaches the target duration, the hydrogen supply system is controlled to stop supplying hydrogen to the fuel cell engine, and then the fuel cell engine enters a sleep state after the hydrogen supply system stops supplying hydrogen. Therefore, the purging system of the fuel cell vehicle provided by the embodiment can meet the hydrogen supply requirement of the shutdown purging of the fuel cell engine, and simultaneously reduces the power consumption of the controller on an auxiliary power supply (such as a whole vehicle storage battery).
And when the duration of the hydrogen supply system supplying the hydrogen to the fuel cell engine reaches the target duration, the hydrogen supply system stops supplying the hydrogen, so that the situation that the hydrogen is stopped due to the fact that the driver is erroneously operated to switch to the power-off gear can be avoided.
Based on the same inventive concept, the present embodiment provides a fuel cell vehicle purging method as shown in fig. 3, which is applied to a hydrogen system controller, and includes steps S31 to S35.
Step S31, when a whole car key switch of the fuel cell car is switched to a power-off gear, controlling a hydrogen supply system of the fuel cell car to supply hydrogen to a fuel cell engine of the fuel cell car, so that the fuel cell engine is purged based on the hydrogen supplied by the hydrogen supply system;
step S32, after the key switch of the whole vehicle is switched to a power-off gear, monitoring the duration of supplying hydrogen for the fuel cell engine by the hydrogen supply system;
in step S33, when the duration is equal to the target duration, the hydrogen supply system is controlled to stop supplying hydrogen to the fuel cell engine, and the sleep state is entered after the hydrogen supply system stops supplying hydrogen.
And step S34, when the duration is smaller than the target duration and the fuel cell engine finishes purging and sends a purging completion signal, controlling the hydrogen supply system to stop supplying hydrogen to the fuel cell engine and entering a dormant state after the hydrogen supply system stops supplying hydrogen in response to the purging completion signal.
And step S35, when the whole vehicle key switch is in the power-on gear, controlling the hydrogen supply system to supply hydrogen to the fuel cell engine so that the fuel cell engine can provide power for the fuel cell vehicle based on the hydrogen supplied by the hydrogen supply system.
Based on the same inventive concept, the embodiment provides a purging method of a fuel cell vehicle as shown in fig. 4, which is applied to a vehicle controller, and the method includes steps S41-S43.
Step S41, when the whole car key switch of the fuel cell car is switched to a power-off gear, a target signal is sent to a fuel cell controller of the fuel cell car, so that the fuel cell controller controls a fuel cell engine to delay power down, and purging is performed based on hydrogen supplied by a hydrogen supply system of the fuel cell car.
And S42, after the whole car key switch is switched to the power-off gear, when the fuel cell controller sends a purging completion signal, the purging completion signal is received and forwarded to the hydrogen system controller of the fuel cell car, so that the hydrogen system controller controls the hydrogen supply system to stop supplying hydrogen to the fuel cell engine.
Wherein receiving the purge complete signal comprises: a purge complete signal is received through the first network segment. Forwarding a purge complete signal to a hydrogen system controller of the fuel cell vehicle, comprising: forwarding a purge completion signal to the hydrogen system controller through the second network segment; wherein the first network segment and the second network segment are different.
Step S43, when the key switch of the whole vehicle is in a power-on gear, receiving a hydrogen supply request of the fuel cell controller; the hydrogen supply request is forwarded to the hydrogen system controller so that the hydrogen system controller controls the hydrogen supply system to supply hydrogen to the fuel cell engine.
Based on the same inventive concept, the present embodiment provides a fuel cell vehicle purging method as shown in fig. 5, applied to a fuel cell controller, the method including:
step S51, receiving a target signal sent by a whole vehicle controller of the fuel cell vehicle, wherein the target signal is generated when a whole vehicle key switch of the fuel cell vehicle is switched to a power-off gear;
in step S52, in response to the target signal, the fuel cell engine is controlled to delay power down so that the fuel cell engine is purged based on the hydrogen supplied from the hydrogen supply system of the fuel cell vehicle.
Step S53, when the fuel cell engine finishes purging, a purge completion signal is sent to the whole vehicle controller, so that the whole vehicle controller forwards the purge completion signal to the hydrogen system controller of the fuel cell vehicle to control the hydrogen supply system to stop supplying hydrogen to the fuel cell engine.
Since the electronic device described in this embodiment is an electronic device used to implement the method for processing information in the embodiment of the present application, those skilled in the art will be able to understand the specific implementation of the electronic device in this embodiment and various modifications thereof based on the method for processing information described in the embodiment of the present application, so how the method in the embodiment of the present application is implemented in this electronic device will not be described in detail herein. Any electronic device used by those skilled in the art to implement the information processing method in the embodiment of the present application is within the scope of the present application.
It will be appreciated by those skilled in the art that 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 present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. The purging system of the fuel cell vehicle is characterized by comprising a hydrogen system controller, a whole vehicle controller and a fuel cell controller which are electrically connected in sequence; the fuel cell controller is electrically connected with the whole vehicle controller through a first network segment, and the hydrogen system controller is electrically connected with the whole vehicle controller through a second network segment; wherein the first network segment and the second network segment are not identical;
the hydrogen system controller is configured to:
when a whole car key switch of a fuel cell car is switched to a power-off gear, controlling a hydrogen supply system of the fuel cell car to supply hydrogen to a fuel cell engine of the fuel cell car, so that the fuel cell engine is purged based on the hydrogen supplied by the hydrogen supply system;
monitoring the duration of the hydrogen supply system supplying hydrogen to the fuel cell engine after the whole car key switch is switched to the power-off gear;
and when the duration is equal to a target duration, controlling the hydrogen supply system to stop supplying hydrogen to the fuel cell engine, and entering a sleep state after the hydrogen supply system stops supplying hydrogen.
2. The system of claim 1, wherein the vehicle controller is to:
and when the whole car key switch is switched to the power-off gear, a target signal is sent to the fuel cell controller, so that the fuel cell controller controls the fuel cell engine to delay power-down, and the purging is performed based on the hydrogen supplied by the hydrogen supply system of the fuel cell car.
3. The system of claim 1, wherein the fuel cell controller is configured to:
receiving a target signal sent by the whole vehicle controller;
and responding to the target signal, and controlling the fuel cell engine to delay power-down so that the fuel cell engine is purged based on the hydrogen supplied by the hydrogen supply system.
4. A fuel cell vehicle purging method, characterized by being applied to a hydrogen system controller in a fuel cell vehicle purging system as claimed in any one of claims 1 to 3, comprising:
when a whole car key switch of a fuel cell car is switched to a power-off gear, controlling a hydrogen supply system of the fuel cell car to supply hydrogen to a fuel cell engine of the fuel cell car, so that the fuel cell engine is purged based on the hydrogen supplied by the hydrogen supply system;
monitoring the duration of the hydrogen supply system supplying hydrogen to the fuel cell engine after the whole car key switch is switched to the power-off gear;
and when the duration is equal to a target duration, controlling the hydrogen supply system to stop supplying hydrogen to the fuel cell engine, and entering a sleep state after the hydrogen supply system stops supplying hydrogen.
5. The method of claim 4, wherein when the duration is less than the target duration and the fuel cell engine is purged and a purge complete signal is sent, the method further comprises:
and controlling the hydrogen supply system to stop supplying hydrogen to the fuel cell engine in response to the purge completion signal, and entering a sleep state after the hydrogen supply system stops supplying hydrogen.
6. A method for purging a fuel cell vehicle, applied to a vehicle controller in a purging system of a fuel cell vehicle as claimed in any one of claims 1 to 3, comprising:
when the whole car key switch of the fuel cell car is switched to the power-off gear, a target signal is sent to a fuel cell controller of the fuel cell car, so that the fuel cell controller controls the fuel cell engine to delay power-down, and the purging is performed based on hydrogen supplied by a hydrogen supply system of the fuel cell car.
7. The method of claim 6, wherein after the entire car key switch is switched to the power down gear, the method further comprises:
when the fuel cell controller sends a purging completion signal, the purging completion signal is received through a first network segment, and the purging completion signal is forwarded to a hydrogen system controller of the fuel cell vehicle through a second network segment, so that the hydrogen system controller controls the hydrogen supply system to stop supplying hydrogen to the fuel cell engine.
8. A fuel cell vehicle purging method for use in a fuel cell controller in a fuel cell vehicle purging system as claimed in any one of claims 1 to 3, the method comprising:
receiving a target signal sent by a whole vehicle controller of the fuel cell vehicle, wherein the target signal is generated when a whole vehicle key switch of the fuel cell vehicle is switched to a power-off gear;
and responding to the target signal, and controlling the fuel cell engine to delay power-down so that the fuel cell engine can purge based on the hydrogen supplied by the hydrogen supply system of the fuel cell vehicle.
9. The method of claim 8, wherein when the fuel cell engine completes purging, the method further comprises:
and sending a purging completion signal to the whole vehicle controller, so that the whole vehicle controller forwards the purging completion signal to a hydrogen system controller of the fuel cell vehicle to control the hydrogen supply system to stop supplying hydrogen to the fuel cell engine.
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| CN202111279826.2A CN114220992B (en) | 2021-10-29 | 2021-10-29 | Purging system and purging method for fuel cell vehicle |
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| CN202111279826.2A CN114220992B (en) | 2021-10-29 | 2021-10-29 | Purging system and purging method for fuel cell vehicle |
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