CN114914486A - Method and device for controlling shutdown purge of fuel cell - Google Patents

Method and device for controlling shutdown purge of fuel cell Download PDF

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Publication number
CN114914486A
CN114914486A CN202210617356.4A CN202210617356A CN114914486A CN 114914486 A CN114914486 A CN 114914486A CN 202210617356 A CN202210617356 A CN 202210617356A CN 114914486 A CN114914486 A CN 114914486A
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China
Prior art keywords
fuel cell
shutdown
instruction
shutdown instruction
controlling
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Pending
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CN202210617356.4A
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Chinese (zh)
Inventor
侯伟
李俊涛
游庆库
宋鹏
夏新艳
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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Priority to CN202210617356.4A priority Critical patent/CN114914486A/en
Publication of CN114914486A publication Critical patent/CN114914486A/en
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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
    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0432—Temperature; Ambient temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0432—Temperature; Ambient temperature
    • H01M8/04358—Temperature; Ambient temperature of the coolant
    • 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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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

The application provides a control method for shutdown purging of a fuel cell and a control device thereof, wherein the method comprises the following steps: in the method for controlling the shutdown purging of the fuel cell, firstly, under the condition that a shutdown instruction for indicating the shutdown of the fuel cell is received, the ambient temperature is obtained, wherein the shutdown instruction comprises a temporary shutdown instruction and a non-temporary shutdown instruction; and then, controlling the fuel cell to be directly shut down or shut down after executing purging action for preset time according to at least a shutdown command and/or ambient temperature. The fuel cell can execute different shutdown operations according to different shutdown instructions and ambient temperatures, and the condition that all shutdown instructions execute purging actions in preset time is avoided, so that the energy consumption is high, the performance of the fuel cell is influenced, the problem that the service life is short due to the fact that the fuel cell in the prior art is purged every time the fuel cell is shut down is solved, the service life of the fuel cell is long, and the performance of the fuel cell is good.

Description

Method and device for controlling shutdown purge of fuel cell
Technical Field
The present disclosure relates to the field of automobiles, and in particular, to a method for controlling shutdown purge of a fuel cell, a control device thereof, a computer-readable storage medium, a processor, and an electronic device.
Background
When the fuel cell engine is shut down, especially in winter, in order to ensure the purging reliability, purging is often performed for a long time, so that the fuel cell engine is long in shutdown time, and the energy consumption is increased. Meanwhile, the long-time purging easily causes dry membrane of the fuel cell stack, and can also influence the performance of the fuel cell system during starting and the service life of the fuel cell system.
The main power source of the current fuel cell vehicle is a power battery, and the fuel cell is usually used as an auxiliary energy source to charge the power battery while supplying energy to the whole vehicle or supplying energy to the whole vehicle. In actual operation of the vehicle, the fuel cell may be stopped because the battery cannot be charged (the power is high or the temperature of the power cell is low). Therefore, there are cases where the fuel cell is turned on and off many times during the running of the vehicle. If long-time purging is adopted during each shutdown, the membrane of the fuel cell stack is easy to dry.
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
The present disclosure provides a method for controlling a purge during shutdown of a fuel cell, a control device thereof, a computer-readable storage medium, a processor, and an electronic device, so as to solve a problem in the prior art that a fuel cell is purged for a long time during each shutdown, which results in a short service life.
According to an aspect of an embodiment of the present invention, there is provided a method of controlling a shutdown purge of a fuel cell, the method including: under the condition that a shutdown instruction is received, acquiring ambient temperature, wherein the shutdown instruction is an instruction for indicating the shutdown of the fuel cell, and the shutdown instruction comprises a temporary shutdown instruction and a non-temporary shutdown instruction; and controlling the fuel cell to shut down at least according to the shutdown instruction and/or the ambient temperature, wherein the shutdown comprises direct shutdown or shutdown after executing a purging action for a preset time.
Optionally, controlling the fuel cell to shut down according to at least the shutdown instruction and/or the ambient temperature includes: under the condition that the shutdown instruction is the temporary shutdown instruction, controlling the fuel cell not to execute a purging action and directly executing a shutdown action to enable the fuel cell to enter a standby state; determining a starting mode under the condition that the shutdown instruction is the non-temporary shutdown instruction, wherein the starting mode comprises low-temperature starting and non-low-temperature starting, and the starting mode is a corresponding running mode when the fuel cell is started before executing the shutdown instruction; and controlling the fuel cell to perform a shutdown action after purging action for a preset time according to the environment temperature and the starting mode, so that the fuel cell enters a shutdown state.
Optionally, determining the start-up mode comprises: acquiring the temperature of a cooling liquid of the fuel cell; determining the start mode as the low-temperature start in a case where the temperature of the coolant is less than a predetermined threshold; determining the start mode to be the non-low-temperature start if the temperature of the coolant is not less than the predetermined threshold.
Optionally, in a case that the shutdown instruction is the temporary shutdown instruction, controlling the fuel cell not to perform a purging action, and directly performing a shutdown action, so that the fuel cell enters a standby state, includes: determining whether a first predetermined condition is met or not in the case that the shutdown instruction is the temporary shutdown instruction, wherein the first predetermined condition comprises: the ambient temperature is greater than a first threshold and the start-up mode is the non-cryogenic start-up; under the condition that the first preset condition is met, controlling the fuel cell not to execute the purging action and directly executing the shutdown action to enable the fuel cell to enter a standby state; and under the condition that a first preset condition is not met, controlling the fuel cell not to execute a purging action, directly executing a shutdown action, starting timing and acquiring timing time, so that the fuel cell enters a standby state.
Optionally, controlling the fuel cell to perform a shutdown action after performing a purging action for a predetermined time according to the ambient temperature and the start mode, so that the fuel cell enters a shutdown state, including: when the ambient temperature is less than or equal to a second threshold value or the starting mode is the low-temperature starting, controlling the fuel cell to perform a purging action for a first time and then shut down; and under the condition that the ambient temperature is greater than a second threshold value and the starting mode is the non-low-temperature starting, controlling the fuel cell to perform a purging action for a second time and then shut down, wherein the second time is less than the first time.
Optionally, after the timing is started and the timing time is acquired while the fuel cell is controlled not to perform the purge action and directly perform the shutdown action, the method further includes: determining whether a second predetermined condition is satisfied, the second predetermined condition comprising one of: the timing time is greater than a third threshold value and no starting instruction is received, the timing time is not greater than the third threshold value and the non-temporary shutdown instruction is received, wherein the starting instruction is an instruction for indicating the starting of the fuel cell; under the condition that the second preset condition is met, controlling the fuel cell to perform purging action for a third time and shut down, and adjusting the state of the fuel cell from the standby state to the shutdown state; controlling the fuel cell to maintain the standby state if the second predetermined condition is not satisfied.
Optionally, the shutdown instruction is generated and sent by the vehicle controller according to an ignition state of the vehicle and an out-of-seat signal of the driver, where the out-of-seat signal is used to represent whether the driver leaves a driving seat, the vehicle controller is a controller of the vehicle, and the vehicle is a vehicle in which the fuel cell is located.
Optionally, the shutdown instruction is the non-temporary shutdown instruction when the ignition state and the leaving signal do not satisfy a third predetermined condition, and the shutdown instruction is the temporary shutdown instruction when the ignition state and the leaving signal satisfy the third predetermined condition, where the third predetermined condition at least includes one of: the vehicle is in the ignition state and the driver is not out of the seat, the vehicle is in the ignition state and the driver is out of the seat for no more than a fourth threshold.
According to another aspect of the embodiments of the present invention, there is also provided a control apparatus for shutdown purge of a fuel cell, where the apparatus includes an obtaining unit and a first control unit, where the obtaining unit is configured to obtain an ambient temperature when receiving a shutdown instruction, where the shutdown instruction is an instruction indicating shutdown of the fuel cell, and the shutdown instruction includes a temporary shutdown instruction and a non-temporary shutdown instruction; the first control unit is used for controlling the fuel cell to shut down or controlling the fuel cell to shut down after purging action of preset time at least according to the shutdown instruction and the ambient temperature.
According to yet another aspect of embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program is for executing any one of the methods.
According to yet another aspect of the embodiments of the present invention, there is also provided a processor for executing a program, where the program executes to perform any one of the methods.
There is also provided, in accordance with yet another aspect of an embodiment of the present invention, electronic equipment comprising one or more processors, memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods described herein.
In the embodiment of the present invention, in the method for controlling shutdown purging of a fuel cell, first, under the condition that a shutdown instruction indicating shutdown of the fuel cell is received, an ambient temperature is obtained, where the shutdown instruction includes a temporary shutdown instruction and a non-temporary shutdown instruction; and then, controlling the fuel cell to be directly shut down or shut down after a preset time of purging action is executed according to at least the shutdown instruction and/or the ambient temperature. Compared with the problem that the fuel cell in the prior art has short service life because the fuel cell is shut down for each time and is swept for a long time, the shutdown sweeping control method of the fuel cell controls the fuel cell to be shut down directly or shut down after sweeping action of the preset time is executed according to the temporary shutdown instruction or the non-temporary shutdown instruction and the environmental temperature by distinguishing the shutdown instruction, and then controls the fuel cell to be shut down directly or shut down after sweeping action of the preset time is executed according to the temporary shutdown instruction or the non-temporary shutdown instruction and the environmental temperature, so that the fuel cell can execute different shutdown operations according to different shutdown instructions and environmental temperatures, and avoids all shutdown instructions from executing sweeping actions of the preset time, thereby causing large energy consumption and influencing the performance of the fuel cell, and solving the problem that the fuel cell in the prior art has short service life because the fuel cell is swept every time, the service life of the fuel cell is ensured to be longer, and meanwhile, the performance of the fuel cell is ensured to be better.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 shows a schematic flow diagram of a method of controlling a shut down purge of a fuel cell according to an embodiment of the present application;
FIG. 2 shows a schematic diagram of a control arrangement for shutdown purging of a fuel cell according to an embodiment of the present application;
fig. 3 shows a flowchart of control of the shutdown purge of the fuel cell according to an embodiment of the present application.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As mentioned in the background of the invention, in order to solve the problem of short service life caused by long-time purging of the fuel cell during each shutdown of the fuel cell in the prior art, in an exemplary embodiment of the present application, a method for controlling the purging of the fuel cell during shutdown, a control device thereof, a computer-readable storage medium, a processor, and an electronic device are provided.
According to an embodiment of the present application, a method of controlling a shutdown purge of a fuel cell is provided.
Fig. 1 is a flowchart of a control method of shutdown purge of a fuel cell according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:
step S101, under the condition that a shutdown instruction is received, acquiring an ambient temperature, wherein the shutdown instruction is an instruction for indicating the shutdown of the fuel cell, and the shutdown instruction comprises a temporary shutdown instruction and a non-temporary shutdown instruction;
and step S102, controlling the fuel cell to shut down at least according to the shutdown instruction and/or the ambient temperature, wherein the shutdown comprises direct shutdown or shutdown after a preset time of purging action is executed.
In the method for controlling the shutdown purge of the fuel cell, firstly, under the condition that a shutdown instruction for instructing the shutdown of the fuel cell is received, the ambient temperature is acquired, wherein the shutdown instruction comprises a temporary shutdown instruction and a non-temporary shutdown instruction; and then, controlling the fuel cell to be directly shut down or shut down after a preset time of purging action is executed according to at least the shutdown command and/or the ambient temperature. Compared with the problem that the fuel cell in the prior art has a short service life because the fuel cell is purged for a long time each time the fuel cell is shut down, the shutdown purging control method of the fuel cell of the present application distinguishes that the shutdown instruction is the temporary shutdown instruction or the non-temporary shutdown instruction, obtains the ambient temperature, controls the fuel cell to shut down directly or shut down after performing the purging action for the predetermined time according to the shutdown instruction and the ambient temperature, so that the fuel cell can perform different shutdown operations according to different shutdown instructions and the ambient temperatures, avoids that all the shutdown instructions perform the purging action for the predetermined time, thereby causing large energy consumption and affecting the performance of the fuel cell, and solves the problem that the fuel cell in the prior art has a short service life because the purging is performed each time the fuel cell is shut down, the service life of the fuel cell is ensured to be longer, and the performance of the fuel cell is ensured to be better.
In the prior art, when the fuel cell engine is shut down, especially when the fuel cell engine is shut down in winter, in order to ensure the purging reliability, purging is often performed for a long time, so that the shutdown time of the fuel cell engine is long, energy consumption is increased, meanwhile, purging is performed for a long time, the dry membrane of a fuel cell stack is easy to cause, the performance of the fuel cell system during startup is also influenced, and the service life of the fuel cell system is also influenced.
Specifically, under the condition that the fuel cell is directly shut down without executing the purging action, the fuel cell can be quickly shut down, and the response speed of the fuel cell is ensured to be high.
In a specific embodiment, the non-temporary shutdown includes a last shutdown of the vehicle corresponding to the fuel cell in a day, and the fuel cell enters a shutdown process when receiving the shutdown instruction, otherwise, the fuel cell remains in a running state.
In order to further ensure that the performance of the fuel cell is better, according to an embodiment of the present application, the controlling the shutdown of the fuel cell at least according to the shutdown command and/or the ambient temperature includes: under the condition that the shutdown instruction is the temporary shutdown instruction, controlling the fuel cell not to execute a purging action and directly executing a shutdown action to enable the fuel cell to enter a standby state; determining a starting mode under the condition that the shutdown instruction is the non-temporary shutdown instruction, wherein the starting mode comprises low-temperature starting and non-low-temperature starting, and the starting mode is a corresponding running mode when the fuel cell is started before executing the shutdown instruction; and controlling the fuel cell to perform a shutdown action after performing a purging action for a preset time according to the environment temperature and the starting mode, so that the fuel cell enters a shutdown state. When the shutdown instruction is the temporary shutdown instruction, controlling the fuel cell to directly execute the shutdown action, not execute the purge action, and controlling the state of the fuel cell to be the standby state, so that the fuel cell can be started up at a higher speed when being started up next time, on one hand, the performance of the fuel cell when being started up is ensured to be better, and on the other hand, the service life of the fuel cell is ensured to be longer, when the shutdown instruction is the non-temporary shutdown instruction, the fuel cell is controlled to perform the purge operation for the predetermined time by determining whether the start-up mode is the low-temperature start or the non-low-temperature start, according to the ambient temperature and the start-up mode, and then the state of the fuel cell is the shutdown state, so that the fuel cell can be started up according to different start-up modes, and different purging actions are executed, so that the service life of the fuel cell is further ensured to be longer, and the performance of the fuel cell is further ensured to be better.
Specifically, since the existing fuel cell vehicle is mainly powered by a power cell, wherein the fuel cell is usually used as an auxiliary energy source to provide energy to the entire vehicle or to charge the power cell while providing energy to the entire vehicle, since there may be a situation that the fuel cell needs to stop working due to the fact that the power cell cannot be charged (the power is high or the temperature of the power cell is low, etc.) during the actual running of the vehicle, the fuel cell may be turned on and off many times during the running of the vehicle, if the fuel cell employs a long-time purge operation during each shutdown, the membrane of the fuel cell stack may be dry, which may affect the service life of the fuel cell, the control process of the fuel cell of the present application is to directly shut down the vehicle without performing the purge operation by setting that the shutdown instruction is the temporary shutdown instruction, the service life of the fuel cell is further ensured to be longer, and the performance of the fuel cell is further ensured to be better.
In a specific embodiment, the fuel cell may respond quickly when receiving a power-on command while being in the standby state, and the fuel cell may consume less power while being in the power-off state.
According to another specific embodiment of the present application, determining the startup mode includes: acquiring the temperature of the cooling liquid of the fuel cell; determining the start mode as the low temperature start when the temperature of the coolant is less than a predetermined threshold; and determining the start mode as the non-low-temperature start when the temperature of the coolant is not less than the predetermined threshold. By acquiring the temperature of the coolant of the fuel cell and determining whether the start mode is the low-temperature start or the non-low-temperature start according to whether the temperature of the coolant is less than the predetermined threshold, wherein the start mode corresponding to the temperature of the coolant being less than the predetermined threshold is the low-temperature start, and the start mode corresponding to the temperature of the coolant being not less than the predetermined threshold is the non-low-temperature start, the fuel cell can be subsequently controlled to perform the purging operation for the predetermined time and shutdown according to the different start modes, so that the service life of the fuel cell is further ensured to be longer, and the performance of the fuel cell is further ensured to be better.
In order to further ensure that the performance of the fuel cell is better, according to another specific embodiment of the present application, in a case that the shutdown instruction is the temporary shutdown instruction, the controlling the fuel cell not to perform a purging operation, and directly performing a shutdown operation, so that the fuel cell enters a standby state includes: determining whether a first predetermined condition is satisfied in the case that the shutdown instruction is the temporary shutdown instruction, where the first predetermined condition includes: the ambient temperature is greater than a first threshold and the start-up mode is the non-low temperature start-up; controlling the fuel cell not to execute the purging operation and directly executing the shutdown operation under the condition that the first preset condition is met, so that the fuel cell enters a standby state; and under the condition that the first preset condition is not met, controlling the fuel cell not to execute the purging action, directly executing the shutdown action, starting timing and acquiring timing time to enable the fuel cell to enter a standby state. When the shutdown instruction is the temporary shutdown instruction, determining whether the first predetermined condition is met, and when the first predetermined condition is met, directly executing a shutdown action and entering the standby state, so that the fuel cell can be rapidly shut down, when the first predetermined condition is not met, controlling the fuel cell not to execute a purging action, and starting timing while directly shutting down, so that the fuel cell can be further ensured to execute different shutdown actions by determining whether the first predetermined condition is met, so that the waiting time of the fuel cell can be determined while the fuel cell can be rapidly shut down, and the response time of the fuel cell executing the shutdown instruction is further ensured to be short.
In order to further ensure that the performance of the fuel cell is better and the service life of the fuel cell is longer, according to an embodiment of the present application, the controlling the fuel cell to perform a shutdown operation after performing a purging operation for a predetermined time according to the ambient temperature and the start mode, so that the fuel cell enters a shutdown state includes: controlling the fuel cell to perform a purging operation for a first time and then shut down the fuel cell when the ambient temperature is less than or equal to a second threshold or the start mode is the low-temperature start; and controlling the fuel cell to perform a purge operation for a second time and then shut down the fuel cell when the ambient temperature is greater than a second threshold and the start mode is the non-low-temperature start, wherein the second time is less than the first time. Determining whether the ambient temperature is greater than a second threshold, and determining whether the start mode is the low-temperature start or the non-low-temperature start, and controlling the fuel cell to perform a purge operation for the first time and then shut down if the ambient temperature is not greater than the second threshold or the start mode is the low-temperature start, and controlling the fuel cell to perform a purge operation for the second time and then shut down if the ambient temperature is greater than the second threshold and the start mode is the non-low-temperature start, and the second time is shorter than the first time, so that the fuel cell can perform a purge operation for a shorter time when the ambient temperature is high and the non-low-temperature start is performed, and perform a purge operation for a longer time when the fuel cell temperature is low or the low-temperature mode is performed, the purging action of different time can be executed according to the environment temperature and the starting mode.
In a specific embodiment, whether the ambient temperature is greater than the second threshold is determined, the start mode is determined to be the low-temperature start or the non-low-temperature start, and the fuel cell is controlled to execute the purging actions for different times, so that the control of different purging durations in winter and non-winter can be realized, on one hand, the problems that the fuel cell is damaged and cannot be normally started next time due to too short purging duration in the low-temperature environment in winter can be prevented, on the other hand, the shutdown speed in the non-winter condition can be ensured to be faster, and the better performance and the longer service life of the fuel cell are further ensured.
In order to further ensure that the performance of the fuel cell is better, according to another specific embodiment of the present application, after controlling the fuel cell to perform the purging action without performing the purging action, and while directly performing the shutdown action, starting to count the time and obtaining the counted time, the method further includes: determining whether a second predetermined condition is satisfied, the second predetermined condition comprising one of: the timing time is greater than a third threshold value and a starting instruction is not received, the timing time is not greater than the third threshold value and the non-temporary shutdown instruction is received, wherein the starting instruction is an instruction for indicating the starting of the fuel cell; when the second preset condition is met, controlling the fuel cell to perform purging operation for a third time and shut down, and adjusting the state of the fuel cell from the standby state to the shutdown state; and controlling the fuel cell to maintain the standby state when the second predetermined condition is not satisfied. By determining whether the second predetermined condition is met, and controlling the fuel cell to perform the purging action at the third time and shut down the fuel cell if the second predetermined condition is met, and adjusting the state of the fuel cell from the standby state to the shutdown state, the fuel cell is enabled to perform the purging action and shut down the fuel cell when the start instruction is not received for a long time or the timing time is short and the non-temporary shutdown instruction is received, it is ensured that the energy consumption of the fuel cell is low, and the standby state is maintained if the second predetermined condition is not met, so that the fuel cell can respond quickly when the start instruction is received subsequently, and the performance of the fuel cell is further ensured to be good.
In a specific embodiment, after receiving the shutdown instruction sent by the vehicle controller, the controller of the fuel cell engine first determines the ambient temperature and the corresponding startup mode, if the ambient temperature is higher than the second threshold and the startup is the non-low-temperature startup, then enters a normal-temperature shutdown process, and if the ambient temperature is lower than the second threshold or the startup is the low-temperature startup, then enters a low-temperature shutdown process, wherein after entering the normal-temperature shutdown process, the shutdown instruction sent by the vehicle controller is determined, if the shutdown instruction is the temporary shutdown instruction, then it is determined that the vehicle is not in a long-time shutdown, and then enters the standby state, and if the shutdown instruction is the non-temporary shutdown instruction, then it is determined that the vehicle is in a long-time shutdown, the purge time is set to T2, and then a shutdown process is performed, the fuel cell state being the shutdown state, and also, after entering a low-temperature shutdown process, judging the shutdown instruction sent by the whole vehicle controller, if the shutdown instruction is the non-temporary shutdown instruction, considering the shutdown for a long time at the moment, setting the purging time to be T3, and then executing the shutdown process, and the fuel cell state is the shutdown state, if the shutdown command is the temporary shutdown command, at this time, the machine is not stopped for a long time, the machine is directly shut down without purging action and enters a standby process, a timer is started for timing, if the timing is greater than the third threshold value, or not exceeding the third threshold, but receiving the shutdown command to change to the non-temporary shutdown command, and controlling the fuel cell to perform purging for a time period of T3 once to execute a shutdown process, wherein the state of the fuel cell is the shutdown state.
In order to further ensure that the accuracy of the shutdown command is high, according to another specific embodiment of the present application, the shutdown command is generated and sent by a vehicle controller according to an ignition state of a vehicle and an out-of-seat signal of a driver, where the out-of-seat signal is used to indicate whether the driver leaves a driver seat, the vehicle controller is a controller of the vehicle, and the vehicle is a vehicle in which the fuel cell is located. And determining the shutdown instruction to be the temporary shutdown instruction or the non-temporary shutdown instruction according to the ignition state and the seat leaving signal of the driver, so that the accuracy of the shutdown instruction is higher, the operation of controlling the shutdown of the battery according to the shutdown instruction is more in line with the actual situation, and the service life and the performance of the fuel cell are further ensured to be longer.
According to an embodiment of the present application, when the ignition state and the unseating signal do not satisfy a third predetermined condition, the shutdown instruction is the non-temporary shutdown instruction, and when the ignition state and the unseating signal satisfy the third predetermined condition, the shutdown instruction is the temporary shutdown instruction, where the third predetermined condition includes at least one of: the vehicle is in the ignition state and the driver is not out of the seat, and the time that the vehicle is in the ignition state and the driver is out of the seat does not exceed a fourth threshold. By judging whether the ignition state and the seat-leaving signal meet the third preset condition, and when the vehicle is in the ignition state and the driver does not leave the driver seat, or the vehicle is in the ignition state and the time for the driver to leave the driver seat does not exceed a third threshold value, determining that the shutdown instruction is the temporary shutdown instruction, and otherwise, determining that the shutdown instruction is the non-temporary shutdown instruction, the accuracy of the shutdown instruction is further ensured to be higher, so that the operation of controlling the battery to be shut down according to the shutdown instruction is more in line with the actual situation, and the service life and the performance of the fuel cell are further ensured to be longer.
In a specific embodiment, the ignition state is mainly determined by a key signal corresponding to the vehicle and a vehicle mode switching signal (pure electric/hybrid), when the fuel cell is turned off, the vehicle controller determines the key signal and a driver off-seat signal, and uses the key signal as a final determination basis, and of course, the vehicle controller may also determine the turn-off command by other signals of the vehicle, including but not limited to: the system comprises a vehicle speed signal, a power battery SOC (State Of Charge), a driver off-seat signal, a hand brake signal, the fault level and State Of the whole vehicle, system time, a position signal acquired by a remote terminal, a vehicle door switch State, a hydrogenation State, a power battery charging State and the like, and the judgment basis Of whether the vehicle is stopped for a long time is realized through the judgment Of the signals and the combination, so that the temporary shutdown instruction or the non-temporary shutdown instruction is generated.
The embodiment of the present application further provides a control device for shutdown purge of a fuel cell, and it should be noted that the control device for shutdown purge of a fuel cell according to the embodiment of the present application may be used to execute the control method for shutdown purge of a fuel cell according to the embodiment of the present application. The following describes a control device for shutdown purge of a fuel cell according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a control apparatus for shutdown purge of a fuel cell according to an embodiment of the present application. As shown in fig. 2, the apparatus includes an obtaining unit 10 and a first control unit 20, where the obtaining unit 10 is configured to obtain an ambient temperature when receiving a shutdown instruction, where the shutdown instruction is an instruction indicating shutdown of the fuel cell, and the shutdown instruction includes a temporary shutdown instruction and a non-temporary shutdown instruction; the first control unit 20 is configured to control the fuel cell to shut down or to perform a purging operation for a predetermined time and then shut down according to at least the shutdown instruction and the ambient temperature.
In the shutdown purge control device for the fuel cell, the obtaining unit obtains an ambient temperature when receiving a shutdown instruction, where the shutdown instruction is an instruction for instructing the fuel cell to shutdown, and the shutdown instruction includes a temporary shutdown instruction and a non-temporary shutdown instruction; and controlling the fuel cell to shut down at least according to the shutdown instruction and/or the ambient temperature through the first control unit, wherein the shutdown comprises direct shutdown or shutdown after a preset time of purging action is executed. Compared with the problem that the fuel cell in the prior art has a short service life because the fuel cell is purged for a long time each time the fuel cell is shut down, the shutdown purging control device of the fuel cell controls the fuel cell to directly shut down or shut down after the fuel cell performs the purging action for the preset time according to the shutdown instruction and the ambient temperature by distinguishing the shutdown instruction as the temporary shutdown instruction or the non-temporary shutdown instruction and acquiring the ambient temperature, so that the fuel cell can perform different shutdown operations according to different shutdown instructions and ambient temperatures, avoids the situation that all the shutdown instructions perform the purging action for the preset time, causes large energy consumption and influences the performance of the fuel cell, and solves the problem that the fuel cell in the prior art has a short service life because the fuel cell is purged each time the fuel cell is shut down, the service life of the fuel cell is ensured to be longer, and the performance of the fuel cell is ensured to be better.
In the prior art, when the fuel cell engine is shut down, especially when the fuel cell engine is shut down in winter, in order to ensure the purging reliability, purging is often performed for a long time, so that the shutdown time of the fuel cell engine is long, energy consumption is increased, meanwhile, purging is performed for a long time, the dry membrane of a fuel cell stack is easy to cause, the performance of the fuel cell system during startup is also influenced, and the service life of the fuel cell system is also influenced.
Specifically, under the condition that the fuel cell is directly shut down without executing the purging action, the fuel cell can be quickly shut down, and the response speed of the fuel cell is ensured to be high.
In a specific embodiment, the non-temporary shutdown includes a last shutdown of the vehicle corresponding to the fuel cell in a day, and the fuel cell enters a shutdown process when receiving the shutdown instruction, otherwise, the fuel cell remains in a running state.
In order to further ensure that the performance of the fuel cell is better, according to a specific embodiment of the present application, the first control unit includes a first control module, a determining module, and a second control module, where the first control module is configured to control the fuel cell not to perform a purging action and directly perform a shutdown action when the shutdown instruction is the temporary shutdown instruction, so that the fuel cell enters a standby state; the determining module is configured to determine a start mode when the shutdown instruction is the non-temporary shutdown instruction, where the start mode includes a low-temperature start and a non-low-temperature start, and the start mode is an operation mode corresponding to the fuel cell when the fuel cell is started before the shutdown instruction is executed; the second control module is used for controlling the fuel cell to perform shutdown actions after purging actions are performed for a preset time according to the environment temperature and the starting mode, so that the fuel cell enters a shutdown state. When the shutdown instruction is the temporary shutdown instruction, controlling the fuel cell to directly execute the shutdown action, not execute the purging action, and controlling the state of the fuel cell to be the standby state, so that the fuel cell can be started at a higher speed when being started next time, on one hand, the performance of the fuel cell when being started is ensured to be better, on the other hand, the service life of the fuel cell is ensured to be longer, in the case that the shutdown instruction is the non-temporary shutdown instruction, by determining whether the start mode is the low-temperature start or the non-low-temperature start, controlling the fuel cell to perform the purging operation for the predetermined time according to the ambient temperature and the start mode, and further making the state of the fuel cell be the shutdown state, so that the fuel cell can be started according to different start modes, and different purging actions are executed, so that the service life of the fuel cell is further ensured to be longer, and the performance of the fuel cell is further ensured to be better.
Specifically, since the existing fuel cell vehicle is mainly powered by a power cell, wherein the fuel cell is usually used as an auxiliary energy source to provide energy to the entire vehicle or to charge the power cell while providing energy to the entire vehicle, since there may be a situation that the fuel cell needs to stop working due to the fact that the power cell cannot be charged (the power is high or the temperature of the power cell is low, etc.) during the actual running of the vehicle, the fuel cell may be turned on and off many times during the running of the vehicle, if the fuel cell employs a long-time purge operation during each shutdown, the membrane of the fuel cell stack may be dry, which may affect the service life of the fuel cell, the control process of the fuel cell of the present application is to directly shut down the vehicle without performing the purge operation by setting that the shutdown instruction is the temporary shutdown instruction, the service life of the fuel cell is further ensured to be longer, and the performance of the fuel cell is further ensured to be better.
In a specific embodiment, the fuel cell may respond quickly when receiving a power-on command while being in the standby state, and the fuel cell may consume less power while being in the power-off state.
According to another specific embodiment of the present application, the determining module includes an obtaining submodule, a first determining submodule, and a second determining submodule, wherein the obtaining submodule is configured to obtain a temperature of the coolant of the fuel cell; the first determination submodule is configured to determine that the start mode is the low-temperature start mode when the temperature of the coolant is less than a predetermined threshold; the second determination submodule is configured to determine that the start mode is the non-low-temperature start mode when the temperature of the coolant is not less than the predetermined threshold. The temperature of the cooling liquid of the fuel cell is acquired, and whether the starting mode is the low-temperature starting or the non-low-temperature starting is determined according to whether the temperature of the cooling liquid is smaller than the preset threshold value or not, wherein the starting mode corresponding to the condition that the temperature of the cooling liquid is smaller than the preset threshold value is the low-temperature starting, and the starting mode corresponding to the condition that the temperature of the cooling liquid is not smaller than the preset threshold value is the non-low-temperature starting, so that the fuel cell can be controlled to perform the purging action for the preset time and shutdown according to different starting modes, the service life of the fuel cell is further ensured to be long, and the performance of the fuel cell is further ensured to be good.
In order to further ensure that the performance of the fuel cell is better, according to another specific embodiment of the present application, the first control module includes a third determining submodule, a first control submodule, and a second control submodule, where the third determining submodule is configured to determine whether a first predetermined condition is satisfied when the shutdown instruction is the temporary shutdown instruction, and the first predetermined condition includes: the ambient temperature is greater than a first threshold and the start-up mode is the non-low temperature start-up; the first control submodule is used for controlling the fuel cell not to execute the purging action and directly executing the shutdown action under the condition that the first preset condition is met, so that the fuel cell enters a standby state; the second control submodule is used for controlling the fuel cell not to execute the purging action under the condition that the first preset condition is not met, directly executing the shutdown action, starting timing and acquiring timing time to enable the fuel cell to enter a standby state. When the shutdown instruction is the temporary shutdown instruction, determining whether the first predetermined condition is met, and when the first predetermined condition is met, directly executing a shutdown action and entering the standby state, so that the fuel cell can be rapidly shut down, when the first predetermined condition is not met, controlling the fuel cell not to execute a purging action, and starting timing while directly shutting down, so that the fuel cell can be further ensured to execute different shutdown actions by determining whether the first predetermined condition is met, so that the waiting time of the fuel cell can be determined while the fuel cell can be rapidly shut down, and the response time of the fuel cell executing the shutdown instruction is further ensured to be short.
In order to further ensure that the performance of the fuel cell is better and the service life of the fuel cell is longer, according to an embodiment of the present application, the second control module includes a third control sub-module and a fourth control sub-module, where the third control sub-module is configured to control the fuel cell to perform a purge operation for a first time and then shut down the fuel cell when the ambient temperature is less than or equal to a second threshold value or the start mode is the low-temperature start; the fourth control submodule is configured to control the fuel cell to perform a purge operation for a second time and then shut down the fuel cell when the ambient temperature is greater than a second threshold and the start mode is the non-low-temperature start, where the second time is less than the first time. Determining whether the ambient temperature is greater than a second threshold, and determining whether the start mode is the low-temperature start or the non-low-temperature start, and controlling the fuel cell to perform a purge operation for the first time and then shut down if the ambient temperature is not greater than the second threshold or the start mode is the low-temperature start, and controlling the fuel cell to perform a purge operation for the second time and then shut down if the ambient temperature is greater than the second threshold and the start mode is the non-low-temperature start, and the second time is shorter than the first time, so that the fuel cell can perform a purge operation for a shorter time when the ambient temperature is high and the non-low-temperature start is performed, and perform a purge operation for a longer time when the fuel cell temperature is low or the low-temperature mode is performed, the purging action of different time can be executed according to the environment temperature and the starting mode.
In a specific embodiment, by determining whether the ambient temperature is greater than the second threshold, determining whether the start mode is the low-temperature start or the non-low-temperature start, and controlling the fuel cell to perform the purging actions for different times, control of different purging durations in winter and non-winter can be achieved, on one hand, the problems that the purging duration is too short in the low-temperature environment in winter, the fuel cell is damaged and cannot be normally started next time can be prevented, on the other hand, the shutdown speed in the non-winter condition can be ensured to be faster, and better performance and longer service life of the fuel cell can be further ensured.
In order to further ensure that the performance of the fuel cell is better, according to another specific embodiment of the present application, the apparatus further includes a determining unit, a second control unit, and a third control unit, where the determining unit is configured to determine whether a second predetermined condition is satisfied after starting timing and obtaining a timing time while controlling the fuel cell to directly perform a shutdown action without performing a purge action, and the second predetermined condition includes one of: the timing time is greater than a third threshold value and a starting instruction is not received, the timing time is not greater than the third threshold value and the non-temporary shutdown instruction is received, wherein the starting instruction is an instruction for indicating the starting of the fuel cell; the second control unit is used for controlling the fuel cell to perform purging operation for a third time and shut down the fuel cell when the second preset condition is met, and adjusting the state of the fuel cell from the standby state to the shutdown state; the third control unit is configured to control the fuel cell to maintain the standby state when the second predetermined condition is not satisfied. By determining whether the second predetermined condition is met, and controlling the fuel cell to perform the purging action at the third time and shut down the fuel cell if the second predetermined condition is met, and adjusting the state of the fuel cell from the standby state to the shutdown state, the fuel cell is enabled to perform the purging action and shut down the fuel cell when the start instruction is not received for a long time or the timing time is short and the non-temporary shutdown instruction is received, it is ensured that the energy consumption of the fuel cell is low, and the standby state is maintained if the second predetermined condition is not met, so that the fuel cell can respond quickly when the start instruction is received subsequently, and the performance of the fuel cell is further ensured to be good.
In a specific embodiment, after receiving the shutdown instruction sent by the vehicle controller, the controller of the fuel cell engine first determines the ambient temperature and the corresponding startup mode, if the ambient temperature is higher than the second threshold and the startup is the non-low-temperature startup, then enters a normal-temperature shutdown process, and if the ambient temperature is lower than the second threshold or the startup is the low-temperature startup, then enters a low-temperature shutdown process, wherein after entering the normal-temperature shutdown process, the shutdown instruction sent by the vehicle controller is determined, if the shutdown instruction is the temporary shutdown instruction, then it is determined that the vehicle is not in a long-time shutdown, and then enters the standby state, and if the shutdown instruction is the non-temporary shutdown instruction, then it is determined that the vehicle is in a long-time shutdown, the purge time is set to T2, and then a shutdown process is performed, the fuel cell state being the shutdown state, and also, after entering a low-temperature shutdown process, judging the shutdown instruction sent by the whole vehicle controller, if the shutdown instruction is the non-temporary shutdown instruction, considering the shutdown for a long time at the moment, setting the purging time to be T3, and then executing the shutdown process, and the fuel cell state is the shutdown state, if the shutdown command is the temporary shutdown command, at this time, the machine is not stopped for a long time, the machine is directly shut down without purging action and enters a standby process, a timer is started for timing, if the timing is greater than the third threshold value, or not exceeding the third threshold, but receiving the shutdown command to change to the non-temporary shutdown command, and controlling the fuel cell to perform purging for a time period of T3 once to execute a shutdown process, wherein the state of the fuel cell is the shutdown state.
In order to further ensure that the accuracy of the shutdown command is high, according to another specific embodiment of the present application, the shutdown command is generated and sent by a vehicle controller according to an ignition state of a vehicle and an out-of-seat signal of a driver, where the out-of-seat signal is used to indicate whether the driver leaves a driver seat, the vehicle controller is a controller of the vehicle, and the vehicle is a vehicle in which the fuel cell is located. And determining the shutdown instruction to be the temporary shutdown instruction or the non-temporary shutdown instruction according to the ignition state and the seat leaving signal of the driver, so that the accuracy of the shutdown instruction is higher, the operation of controlling the shutdown of the battery according to the shutdown instruction is more in line with the actual situation, and the service life and the performance of the fuel cell are further ensured to be longer.
According to an embodiment of the present application, when the ignition state and the unseating signal do not satisfy a third predetermined condition, the shutdown instruction is the non-temporary shutdown instruction, and when the ignition state and the unseating signal satisfy the third predetermined condition, the shutdown instruction is the temporary shutdown instruction, where the third predetermined condition includes at least one of: the vehicle is in the ignition state and the driver is not out of the seat, and the time that the vehicle is in the ignition state and the driver is out of the seat does not exceed a fourth threshold. By judging whether the ignition state and the seat-leaving signal meet the third preset condition, and when the vehicle is in the ignition state and the driver does not leave the driver seat, or the vehicle is in the ignition state and the time for the driver to leave the driver seat does not exceed a third threshold value, determining that the shutdown instruction is the temporary shutdown instruction, and otherwise, determining that the shutdown instruction is the non-temporary shutdown instruction, the accuracy of the shutdown instruction is further ensured to be higher, so that the operation of controlling the battery to be shut down according to the shutdown instruction is more in line with the actual situation, and the service life and the performance of the fuel cell are further ensured to be longer.
In a specific embodiment, the ignition state is mainly determined by a key signal corresponding to the vehicle and a vehicle mode switching signal (pure electric/hybrid), when the fuel cell is turned off, the vehicle controller determines the key signal and a driver off-seat signal, and uses the key signal as a final determination basis, and of course, the vehicle controller may also determine the turn-off command by other signals of the vehicle, including but not limited to: the system comprises a vehicle speed signal, a power battery SOC (State Of Charge), a driver off-seat signal, a hand brake signal, the fault level and State Of the whole vehicle, system time, a position signal acquired by a remote terminal, a vehicle door switch State, a hydrogenation State, a power battery charging State and the like, and the judgment basis Of whether the vehicle is stopped for a long time is realized through the judgment Of the signals and the combination, so that the temporary shutdown instruction or the non-temporary shutdown instruction is generated.
The control device for shutdown purging of the fuel cell comprises a processor and a memory, wherein the acquisition unit, the first control unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problem that the service life is short because the fuel cell in the prior art is purged for a long time every time when the fuel cell is shut down is solved by adjusting kernel parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a computer-readable storage medium having stored thereon a program that, when executed by a processor, implements the above-described control method for shutdown purge of a fuel cell.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program is used for executing a control method for shutdown purging of a fuel cell when running.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein when the processor executes the program, at least the following steps are realized:
step S101, under the condition that a shutdown instruction is received, acquiring an ambient temperature, wherein the shutdown instruction is an instruction for indicating the shutdown of the fuel cell, and the shutdown instruction comprises a temporary shutdown instruction and a non-temporary shutdown instruction;
and step S102, controlling the fuel cell to shut down at least according to the shutdown instruction and/or the ambient temperature, wherein the shutdown comprises direct shutdown or shutdown after a preset time of purging action is executed.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program of initializing at least the following method steps when executed on a data processing device:
step S101, under the condition that a shutdown instruction is received, acquiring an ambient temperature, wherein the shutdown instruction is an instruction for indicating the shutdown of the fuel cell, and the shutdown instruction comprises a temporary shutdown instruction and a non-temporary shutdown instruction;
and step S102, controlling the fuel cell to shut down at least according to the shutdown instruction and/or the ambient temperature, wherein the shutdown comprises direct shutdown or shutdown after a preset time of purging action is executed.
There is also provided, in accordance with another exemplary embodiment of the present application, electronic equipment comprising one or more processors, memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods described above.
Fig. 3 is a flowchart of the operation of the control of the shutdown purge of the fuel cell, which will be described in detail below in conjunction with fig. 3,
under the condition of receiving the shutdown instruction;
determining whether the ambient temperature is greater than a first threshold and the start mode is the non-low temperature start, that is, determining whether the first predetermined condition is satisfied;
determining whether the shutdown instruction is the non-temporary shutdown instruction or not when the first predetermined condition is met, controlling the fuel cell not to execute the purging action and directly executing the shutdown action to enable the fuel cell to enter a standby state when the shutdown instruction is the temporary shutdown instruction, judging whether the shutdown instruction is changed into the non-temporary shutdown instruction or not, controlling the fuel cell to perform the purging action for a predetermined time and then shutdown and be in the shutdown state if the shutdown instruction is changed into the non-temporary shutdown instruction, and continuing to keep the standby state if the shutdown instruction is not changed into the non-temporary shutdown instruction; when the shutdown instruction is the non-temporary shutdown instruction, controlling the fuel cell to perform a purging action for a second time and then shutdown, wherein the shutdown is in a shutdown state;
under the condition that the first preset condition is not met, judging whether the fuel cell is the non-temporary shutdown instruction or not, and under the condition that the non-temporary shutdown instruction is not met, controlling the fuel cell to perform a purging action for a first time, then shutdown the fuel cell, and enabling the fuel cell to be in the shutdown state; under the condition of the temporary shutdown instruction, controlling the fuel cell not to execute a purging action, directly executing a shutdown action, starting timing and acquiring timing time, so that the fuel cell enters a standby state, and determining whether a second preset condition is met, wherein the second preset condition comprises one of the following conditions: and when the second preset condition is not met, controlling the fuel cell to perform purging operation for a third time and shut down, and adjusting the state of the fuel cell from the standby state to the shut-down state, and when the second preset condition is not met, controlling the fuel cell to keep the standby state.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention, which is substantially or partly contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:
1) in the method for controlling shutdown purge of the fuel cell, first, when a shutdown instruction indicating shutdown of the fuel cell is received, an ambient temperature is obtained, where the shutdown instruction includes a temporary shutdown instruction and a non-temporary shutdown instruction; and then, controlling the fuel cell to be directly shut down or shut down after a preset time of purging action is executed according to at least the shutdown command and/or the ambient temperature. Compared with the problem that the fuel cell in the prior art has a short service life because the fuel cell is purged for a long time each time the fuel cell is shut down, the shutdown purging control method of the fuel cell of the present application distinguishes that the shutdown instruction is the temporary shutdown instruction or the non-temporary shutdown instruction, obtains the ambient temperature, controls the fuel cell to shut down directly or shut down after performing the purging action for the predetermined time according to the shutdown instruction and the ambient temperature, so that the fuel cell can perform different shutdown operations according to different shutdown instructions and the ambient temperatures, avoids that all the shutdown instructions perform the purging action for the predetermined time, thereby causing large energy consumption and affecting the performance of the fuel cell, and solves the problem that the fuel cell in the prior art has a short service life because the purging is performed each time the fuel cell is shut down, the service life of the fuel cell is ensured to be longer, and the performance of the fuel cell is ensured to be better.
2) In the shutdown purge control device for the fuel cell of the present application, the obtaining unit obtains an ambient temperature when receiving a shutdown instruction, where the shutdown instruction is an instruction for instructing the fuel cell to shutdown, and the shutdown instruction includes a temporary shutdown instruction and a non-temporary shutdown instruction; and controlling the fuel cell to shut down at least according to the shutdown instruction and/or the ambient temperature through the first control unit, wherein the shutdown comprises direct shutdown or shutdown after a preset time of purging action is executed. Compared with the problem that the fuel cell in the prior art has a short service life because the fuel cell is purged for a long time each time the fuel cell is shut down, the shutdown purging control device of the fuel cell controls the fuel cell to be shut down directly or shut down after purging for the preset time is executed according to the shutdown command and the ambient temperature by distinguishing the shutdown command as the temporary shutdown command or the non-temporary shutdown command and acquiring the ambient temperature, so that the fuel cell can execute different shutdown operations according to different shutdown commands and the ambient temperature, avoids the situation that all the shutdown commands execute the purging for the preset time, thereby causing large energy consumption and influencing the performance of the fuel cell, and solves the problem that the fuel cell in the prior art has a short service life because the purging is performed each time the fuel cell is shut down, the service life of the fuel cell is ensured to be longer, and the performance of the fuel cell is ensured to be better.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (12)

1. A method of controlling a shutdown purge of a fuel cell, the method comprising:
under the condition that a shutdown instruction is received, acquiring ambient temperature, wherein the shutdown instruction is an instruction for indicating the shutdown of the fuel cell, and the shutdown instruction comprises a temporary shutdown instruction and a non-temporary shutdown instruction;
and controlling the fuel cell to shut down at least according to the shutdown instruction and/or the ambient temperature, wherein the shutdown comprises direct shutdown or shutdown after a preset time of purging action is executed.
2. The method of claim 1, wherein controlling the fuel cell to shut down based on at least the shutdown command and/or the ambient temperature comprises:
under the condition that the shutdown instruction is the temporary shutdown instruction, controlling the fuel cell not to execute a purging action and directly executing a shutdown action to enable the fuel cell to enter a standby state;
determining a starting mode under the condition that the shutdown instruction is the non-temporary shutdown instruction, wherein the starting mode comprises low-temperature starting and non-low-temperature starting, and the starting mode is a corresponding running mode when the fuel cell is started before executing the shutdown instruction;
and controlling the fuel cell to perform a shutdown action after purging action for a preset time according to the environment temperature and the starting mode, so that the fuel cell enters a shutdown state.
3. The method of claim 2, wherein determining a startup mode comprises:
acquiring the temperature of a cooling liquid of the fuel cell;
determining the start mode as the low-temperature start in a case where the temperature of the coolant is less than a predetermined threshold;
determining the start mode to be the non-low-temperature start if the temperature of the coolant is not less than the predetermined threshold.
4. The method according to claim 2, wherein in a case where the shutdown instruction is the temporary shutdown instruction, controlling the fuel cell not to perform a purge action, and directly performing a shutdown action so that the fuel cell enters a standby state, includes:
determining whether a first predetermined condition is met or not in the case that the shutdown instruction is the temporary shutdown instruction, wherein the first predetermined condition comprises: the ambient temperature is greater than a first threshold and the start-up mode is the non-cryogenic start-up;
under the condition that the first preset condition is met, controlling the fuel cell not to execute the purging action and directly executing the shutdown action to enable the fuel cell to enter a standby state;
and under the condition that a first preset condition is not met, controlling the fuel cell not to execute a purging action, and starting timing and acquiring timing time while directly executing a shutdown action so that the fuel cell enters a standby state.
5. The method of claim 4, wherein controlling the fuel cell to perform a shutdown action after performing a purge action for a predetermined time according to the ambient temperature and the start-up mode, so that the fuel cell enters a shutdown state comprises:
when the ambient temperature is less than or equal to a second threshold value or the starting mode is the low-temperature starting, controlling the fuel cell to perform a purging action for a first time and then shut down;
and under the condition that the ambient temperature is greater than a second threshold value and the starting mode is the non-low-temperature starting, controlling the fuel cell to perform a purging action for a second time and then shut down, wherein the second time is less than the first time.
6. The method according to claim 4, wherein after the timing is started and the timing time is acquired while controlling the fuel cell to perform no purge action and directly perform a shutdown action, the method further comprises:
determining whether a second predetermined condition is satisfied, the second predetermined condition comprising one of: the timing time is greater than a third threshold value and no starting instruction is received, the timing time is not greater than the third threshold value and the non-temporary shutdown instruction is received, wherein the starting instruction is an instruction for indicating the starting of the fuel cell;
under the condition that the second preset condition is met, controlling the fuel cell to perform purging action for a third time and shut down, and adjusting the state of the fuel cell from the standby state to the shutdown state;
controlling the fuel cell to maintain the standby state if the second predetermined condition is not satisfied.
7. The method according to any one of claims 1 to 6, characterized in that the shutdown command is generated and sent by a vehicle control unit according to an ignition state of a vehicle and an out-of-seat signal of a driver, wherein the out-of-seat signal is used for indicating whether the driver leaves a driver seat, the vehicle control unit is a controller of the vehicle, and the vehicle is a vehicle in which the fuel cell is located.
8. The method according to claim 7, wherein the shutdown instruction is the non-temporary shutdown instruction in case the ignition status and the unseating signal do not satisfy a third predetermined condition, wherein the shutdown instruction is the temporary shutdown instruction in case the ignition status and the unseating signal satisfy the third predetermined condition, and wherein the third predetermined condition includes at least one of: the vehicle is in the ignition state and the driver is not out of the seat, the vehicle is in the ignition state and the driver is out of the seat for no more than a fourth threshold.
9. A control apparatus for shutdown purge of a fuel cell, the apparatus comprising:
the fuel cell shutdown control device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the ambient temperature under the condition of receiving a shutdown instruction, the shutdown instruction is an instruction for indicating the shutdown of the fuel cell, and the shutdown instruction comprises a temporary shutdown instruction and a non-temporary shutdown instruction;
and the first control unit is used for controlling the fuel cell to shut down or controlling the fuel cell to shut down after purging action of preset time at least according to the shutdown instruction and the ambient temperature.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the program performs the method of any one of claims 1 to 8.
11. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the method of any of claims 1 to 8.
12. An electronic device, comprising: one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing the method of any of claims 1-8.
CN202210617356.4A 2022-06-01 2022-06-01 Method and device for controlling shutdown purge of fuel cell Pending CN114914486A (en)

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