CN118315624A - Method, device and medium for monitoring valve member - Google Patents

Abstract

The application discloses a method, a device and a medium for monitoring a valve member, wherein the method comprises the following steps: acquiring a target state of the fuel cell system, wherein the target state is an operating state or a shutdown state; if the fuel cell system is in an operating state, monitoring whether the dynamic parameter of the target valve member meets a preset dynamic parameter range, wherein the dynamic parameter range is used for representing a normal parameter range of the target valve member when the fuel cell system is in the operating state; if the fuel cell system is in a shut-down state, monitoring whether the static parameter of the target valve member meets a preset static parameter range, wherein the static parameter range is used for representing a normal parameter range of the target valve member when the fuel cell system is in the shut-down state. The technical scheme provided by the application can be used for distinguishing and monitoring the dynamic and static parameters of the valve member, so that the accuracy of monitoring the performance of the valve member is improved.

Description

Method, device and medium for monitoring valve member

Technical Field

The application belongs to the technical field of valve member monitoring, and particularly relates to a valve member monitoring method, a valve member monitoring device and a valve member monitoring medium.

Background

The fuel cell system is provided with a plurality of valve members, such as a pressure reducing valve, a hydrogen inlet electromagnetic valve and the like, and whether the working performance of the valve members is normal or not is important to ensure the stable operation of the fuel cell system, so that the performance parameters of the valve members are required to be monitored. At present, the related art monitors whether the performance of the valve member is normal or not by adopting a single parameter monitoring mode, but the mode has the problem of poor accuracy of monitoring results.

Disclosure of Invention

The embodiment of the application provides a method, a device and a medium for monitoring a valve member, which can be used for distinguishing and monitoring dynamic and static parameters of the valve member at least to a certain extent, so that the accuracy of monitoring the performance of the valve member is improved.

Other features and advantages of the application will be apparent from the following detailed description, or may be learned by the practice of the application.

According to a first aspect of an embodiment of the present application, there is provided a method of monitoring a valve member, applied to a fuel cell system provided with a target valve member, the method comprising:

Acquiring a target state of the fuel cell system, wherein the target state is an operating state or a shutdown state;

if the fuel cell system is in the running state, monitoring whether the dynamic parameter of the target valve member meets a preset dynamic parameter range, wherein the dynamic parameter range is used for representing the normal parameter range of the target valve member when the fuel cell system is in the running state;

If the fuel cell system is in the shutdown state, monitoring whether the static parameter of the target valve member meets a preset static parameter range, wherein the static parameter range is used for representing a normal parameter range of the target valve member when the fuel cell system is in the shutdown state.

In some embodiments of the present application, based on the foregoing aspect, when the dynamic parameter of the target valve member satisfies a preset dynamic parameter range if the fuel cell system is in the operating state, the method further includes:

Determining a first target time at which the fuel cell system is switched from the shutdown state to the operation state;

and monitoring whether the dynamic parameters of the target valve member meet the preset dynamic parameter range or not from the first target moment.

In some embodiments of the present application, based on the foregoing, the fuel cell system includes a hydrogen supply subsystem, the hydrogen supply subsystem including the target valve member and at least one bottle valve, at least one downstream solenoid valve being disposed between the target valve member and the stack, the determining a first target time for switching the fuel cell system from the shutdown state to the operation state includes:

determining a first moment when a bottle valve starting instruction of the whole vehicle controller is received;

And taking a second time after a first target time period from the first time as a first target time for switching the fuel cell system from the shut-down state to the running state, wherein the first target time period comprises a preset starting total time period of the at least one bottle valve and a preset starting total time period of the at least one downstream electromagnetic valve.

In some embodiments of the present application, based on the foregoing, the fuel cell system includes a hydrogen supply subsystem, the hydrogen supply subsystem including the target valve member and at least one bottle valve, at least one downstream solenoid valve being disposed between the target valve member and the stack, the determining a first target time for switching the fuel cell system from the shutdown state to the operation state includes:

Controlling the at least one bottle valve to be started according to a bottle valve starting instruction of the whole vehicle controller;

determining a third time when the last detected bottle valve is started, and taking a fourth time after the third time passes through the preset starting total time length of the at least one downstream electromagnetic valve as a first target time when the fuel cell system is switched from the shut-down state to the running state.

In some embodiments of the present application, based on the foregoing solution, the preset total activation duration of the at least one downstream solenoid valve is determined as follows:

Acquiring a target parameter value of a start-up influencing parameter, wherein the start-up influencing parameter is used for representing a parameter influencing the start-up duration of the at least one downstream electromagnetic valve;

And determining the preset starting total duration of at least one downstream electromagnetic valve corresponding to the target parameter value according to the preset corresponding relation between the parameter value of the starting influence parameter and the starting duration of the at least one downstream electromagnetic valve.

In some embodiments of the present application, based on the foregoing aspect, when monitoring whether the static parameter of the target valve member satisfies a preset static parameter range if the fuel cell system is in the shutdown state, the method further includes:

Determining a second target time at which the fuel cell system is switched from the operating state to the shutdown state;

And monitoring whether the static parameter of the target valve member meets a preset static parameter range or not from the second target moment.

In some embodiments of the present application, based on the foregoing, the fuel cell system includes a hydrogen supply subsystem, the hydrogen supply subsystem including the target valve member and at least one bottle valve, at least one downstream solenoid valve being disposed between the target valve member and the stack, the determining the second target time for the fuel cell system to switch from the operating state to the shutdown state includes:

determining a fifth moment when a bottle valve closing instruction of the whole vehicle controller is received;

And taking a sixth time after a second target time period from the fifth time as a second target time period when the fuel cell system is switched from the running state to the closing state, wherein the second target time period is a preset closing total time period of the at least one bottle valve.

In some embodiments of the application, based on the foregoing, the method further comprises:

and if the dynamic parameter of the target valve part is monitored to not meet the dynamic parameter range, or the static parameter of the target valve part is monitored to not meet the static parameter range, sending fault alarm information to the whole vehicle controller.

According to a second aspect of embodiments of the present application, there is provided a valve member monitoring device applied to a fuel cell system provided with a target valve member, the device comprising:

An acquisition unit configured to acquire a target state of the fuel cell system, the target state being an operating state or a shutdown state;

The first monitoring unit is used for monitoring whether the dynamic parameter of the target valve member meets a preset dynamic parameter range or not if the fuel cell system is in the running state, and the dynamic parameter range is used for representing the normal parameter range of the target valve member when the fuel cell system is in the running state;

and the second monitoring unit is used for monitoring whether the static parameter of the target valve member meets a preset static parameter range or not if the fuel cell system is in the shutdown state, wherein the static parameter range is used for representing the normal parameter range of the target valve member when the fuel cell system is in the shutdown state.

According to a third aspect of embodiments of the present application, there is provided a computer readable storage medium having stored therein at least one computer program instruction that is loaded and executed by a processor to implement the operations performed by the method as described in any of the first aspects.

According to a fourth aspect of embodiments of the present application, there is provided an electronic device comprising one or more processors and one or more memories having stored therein at least one piece of program code loaded and executed by the one or more processors to implement the operations performed by the method of any of the first aspects.

The one or more technical solutions provided by the embodiments of the present invention at least achieve the following technical effects or advantages:

The method and the device determine the parameter monitoring mode of the target valve piece according to the target state of the fuel cell system based on the characteristic that the dynamic parameter range and the static parameter range of the target valve piece are different, namely if the fuel cell system is in the running state, whether the dynamic parameter of the target valve piece meets the preset dynamic parameter range is monitored, if the fuel cell system is in the shutdown state, whether the static parameter of the target valve piece meets the preset static parameter range is monitored, and the dynamic and static parameters of the valve piece are monitored in a distinguishing mode, so that the accuracy rate of monitoring the performance of the valve piece is improved, and the running stability of the fuel cell system is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:

FIG. 1 illustrates a flow chart of a method of monitoring a valve member in accordance with an embodiment of the present application;

FIG. 2 shows a block diagram of a monitoring device for a valve member according to an embodiment of the present application;

Fig. 3 shows a schematic diagram of a computer system suitable for use in implementing an embodiment of the application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.

It should also be noted that the terms "first," "second," and the like in the description and claims of the present application and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in other sequences than those illustrated or otherwise described.

In addition, during long-term use, the performance of each valve member in the fuel cell system may be degraded due to environmental factors and the like, thereby affecting the stable operation of the fuel cell system. Therefore, during use of the fuel cell system, it is necessary to monitor the operation performance of each valve member to improve the stability of the operation of the fuel cell system.

For example: a pressure reducing valve provided in a hydrogen supply subsystem of the fuel cell system, through which high-pressure line gas permeates into the low-pressure line if the vehicle is in a long-time parked state, thereby causing a gradual increase in pressure downstream of the pressure reducing valve; or if the hydrogen supply subsystem works at a lower temperature, the sealing material in the pressure reducing valve is hardened, the sealing effect is poor, so that internal leakage is caused, and the output pressure of the pressure reducing valve is gradually increased. After the output pressure of the pressure reducing valve rises to the threshold value, the vehicle can be early warned and can not be started to run normally.

In the related art, whether the performance of the valve member is normal or not is monitored by adopting a single parameter monitoring mode, but the accuracy of the monitoring mode is poor.

Based on the above, the embodiment of the application provides a method for monitoring a valve member, which solves the above problems at least to a certain extent, so that the monitoring result is more accurate, and the working efficiency of the fuel cell system is improved.

Referring to fig. 1, a flow chart of a method of monitoring a valve member in accordance with an embodiment of the present application is shown.

It should be noted that the present application finds that there is a difference between the dynamic parameter range and the static parameter range of the valve member in the process of using each valve member of the fuel cell system. For example: according to the operating characteristics of the pressure reducing valve, the pressure when the downstream cut-off of the pressure reducing valve has no flow output is higher than the pressure when the flow output is present. Based on the above, the embodiment of the application divides the performance parameter monitoring of the target valve member into dynamic parameter monitoring and static parameter monitoring, so that the monitoring result is more accurate, and the working efficiency of the fuel cell system is improved. The implementation of this method will be described in detail below.

As shown in fig. 1, according to a first aspect of the embodiment of the present application, there is provided a method for monitoring valve members, which is applied to a fuel cell system provided with target valve members including, but not limited to, respective valve members in a hydrogen supply subsystem (e.g., pressure reducing valve), respective valve members in an air subsystem (e.g., in-stack shut-off valve, out-stack shut-off valve, back pressure valve, etc.), respective valve members in a cooling subsystem (e.g., temperature control valve), etc., for ease of understanding, the pressure reducing valve will be taken as an example.

It should be noted that the method may be different for the target valve member, and the corresponding execution subject may also be different, for example, when the target valve member is a valve member in the hydrogen supply subsystem, the execution subject of the method may be a hydrogen system controller (HMS), and when the target valve member is a valve member near the fuel cell stack (for example, a hydrogen inlet solenoid valve), the execution subject of the method may be a hydrogen fuel cell system controller (FCU), which is not limited herein.

The method includes, but is not limited to, being implemented by steps S1 to S3:

S1, acquiring a target state of the fuel cell system, wherein the target state is an operating state or a shutdown state;

S2, if the fuel cell system is in the running state, monitoring whether the dynamic parameter of the target valve member meets a preset dynamic parameter range, wherein the dynamic parameter range is used for representing a normal parameter range of the target valve member when the fuel cell system is in the running state;

In some embodiments, the dynamic parameters of the target valve member include, but are not limited to, output pressure, output flow, etc., wherein the output pressure may be acquired by a pressure sensor disposed at the outlet of the target valve member and the output flow may be acquired by a flow sensor disposed at the outlet of the target valve member.

It can be understood that when the fuel cell system is in an operation state, the target valve member will also be in a dynamic operation state, and because there is a difference between the dynamic parameter range and the static parameter range of the target valve member, when the fuel cell system is in an operation state, the normal parameter range of the target valve member during dynamic operation is calibrated, and the dynamic parameter range is preset, so that if the dynamic parameter of the target valve member during actual operation is not in the dynamic parameter range, it can be determined that the performance of the target valve member is abnormal, for example, abnormal conditions such as internal leakage or external leakage exist.

And S3, if the fuel cell system is in the shutdown state, monitoring whether the static parameter of the target valve member meets a preset static parameter range, wherein the static parameter range is used for representing a normal parameter range of the target valve member when the fuel cell system is in the shutdown state.

It can be understood that when the fuel cell system is in the shutdown state, the target valve member will also enter the static operation state, and because there is a difference between the dynamic parameter range and the static parameter range of the target valve member, when the fuel cell system is in the shutdown state, the normal parameter range of the target valve member during static operation is calibrated, and the static parameter range is preset, so that whether the target valve member is abnormal, such as internal leakage or external leakage, can be determined according to whether the static parameter of the target valve member during actual operation is in the static parameter range.

For example: when the fuel cell system enters an operation state, a hydrogen supply subsystem is required to supply hydrogen to the electric pile, and the downstream of the pressure reducing valve has flow output; when the fuel cell system enters a shut-down state, the downstream electromagnetic valve of the pressure reducing valve is cut off so that the pressure at the outlet of the pressure reducing valve is increased, and according to the operating characteristic of the pressure reducing valve, the pressure at the time of cutting off no flow output (at the time of static state) of the downstream of the pressure reducing valve is higher than the pressure at the time of outputting the flow output (at the time of dynamic state), so that the output pressure of the pressure reducing valve is divided into dynamic pressure (namely, the pressure at the time of outputting the flow output when the downstream galvanic pile consumes hydrogen) and static pressure (namely, the pressure at the time of outputting the flow output when the downstream galvanic pile does not consume hydrogen), and whether the dynamic pressure and the static pressure meet the preset pressure range or not is monitored respectively, thereby improving the accuracy of monitoring the performance parameters of the pressure reducing valve.

Specifically, when the hydrogen supply subsystem supplies the gas to the downstream galvanic pile normally, the dynamic output pressure of the pressure reducing valve needs to be within a preset dynamic pressure range, the output pressure of the rear end of the pressure reducing valve is set to be dynamic output pressure P _{Dynamic movement} , and when the hydrogen supply subsystem stops supplying the gas to the downstream galvanic pile, the output pressure of the rear end of the pressure reducing valve is set to be static output pressure P _{Static state} , and under normal conditions, P _{Static state} ＞P _{Dynamic movement} .

By calibrating the dynamic pressure range in advance, the dynamic pressure range corresponding to the normal output pressure P _{Dynamic movement} of the pressure reducing valve is x ₁≤P _{Dynamic movement} ≤x₂, wherein x ₁ and x ₂ are respectively the lower limit value and the upper limit value of the dynamic pressure range; similarly, by calibrating the static pressure range in advance, the static pressure range corresponding to the static output pressure P _{Static state} of the pressure reducing valve is x ₁≤P _{Static state} ≤x₃,x₁ and x ₃ are the lower limit value and the upper limit value of the static pressure range, respectively, and it can be seen that the lower limit values of the static parameter range and the dynamic parameter range can be the same, where x ₃ is greater than the locking pressure of the pressure reducing valve, and the locking pressure refers to the output pressure when the pressure reducing valve is normally operated (e.g. 15 ℃) and the downstream is blocked (static) and the pressure tends to be stable.

Then, the dynamic parameter fault monitoring range and the static parameter fault monitoring range of the pressure reducing valve are respectively:

P _{Dynamic movement} ＞x₂,P _{Dynamic movement} ＜x₁, that is, when the dynamic pressure is greater than the upper limit value of the dynamic pressure range or less than the lower limit value of the dynamic pressure range, the pressure reducing valve is considered to have a performance failure;

p _{Static state} ＞x₃,P _{Static state} ＜x₁, that is, when the static pressure is greater than the upper limit value of the static pressure range or less than the lower limit value of the static pressure range, the pressure reducing valve is considered to have a performance failure.

In some embodiments, to further improve accuracy of monitoring the target valve element parameter, when the dynamic parameter of the target valve element satisfies a preset dynamic parameter range if the fuel cell system is in the operating state, the method further includes:

S21, determining a first target moment when the fuel cell system is switched from the shutdown state to the running state;

it can be understood that, since the parameter monitoring mode of the target valve member is in the dynamic switching process, for example, when the fuel cell system enters the running state from the shutdown state, the dynamic parameter of the target valve member needs to be monitored, and when the fuel cell system enters the shutdown state from the running state, the static parameter of the target valve member needs to be monitored, and therefore, the parameter monitoring mode of the target valve member is switched, which has an important meaning for improving the accuracy of the parameter monitoring of the target valve member, avoiding that the target valve member has entered the dynamic running state, monitoring the parameter thereof by adopting the static parameter range, or monitoring the parameter thereof by adopting the dynamic parameter range.

In some embodiments, the fuel cell system includes a hydrogen supply subsystem including the target valve member and at least one bottle valve, at least one downstream solenoid valve is disposed between the target valve member and the stack, for example, the target valve member is a pressure reducing valve, a hydrogen inlet solenoid valve is disposed between the pressure reducing valve and the stack, the determining a first target time for the fuel cell system to switch from the shutdown state to the operational state includes:

S211A, determining a first moment when a bottle valve starting instruction of the whole vehicle controller is received;

It will be appreciated that when the whole vehicle has a power output requirement for the fuel cell system, or when the fuel cell system is idling at zero power, a certain amount of hydrogen and air are required to be supplied, at this time, the hydrogen system controller HMS receives the bottle valve start command of the whole vehicle controller VCU, and the hydrogen system controller takes the time when the bottle valve start command is received as the first time, and starts to count from the first time, so as to determine the first target time subsequently.

Step S212A, a second time after a first target time period from the first time is taken as the first target time for switching the fuel cell system from the shut-down state to the running state, wherein the first target time period comprises a preset starting total time period of the at least one bottle valve and a preset starting total time period of the at least one downstream electromagnetic valve.

It will be appreciated that the hydrogen supply subsystem may include a plurality of valves, each of which may be calibrated for its activation duration by its historical activation duration, for example, taking an average activation duration from its historical data, thereby determining a preset total activation duration for all valves; likewise, the activation duration of each downstream solenoid valve may be calibrated by its historical activation duration, for example, taking an average activation duration in its historical data, to determine the total activation duration for all downstream solenoid valves.

It can be understood that by pre-calibrating the total starting time of the bottle valve, the total starting time can be universal, and the subsequent detection quantity of the opening state and time of the bottle valve is reduced.

Then, the hydrogen system controller starts timing from the first moment, after the preset starting total time length of each bottle valve and the preset total time length of each downstream electromagnetic valve are passed, namely the pipeline where the pressure reducing valve is located is communicated, and the downstream of the pressure reducing valve has flow output, so that the flow output is used as the first target moment when the fuel cell system is switched from the shut-down state to the running state, and the monitoring accuracy of the dynamic parameters of the pressure reducing valve is improved.

For example: the method comprises the steps that when a valve starting instruction of a vehicle controller VCU is received by a hydrogen system controller HMS as a starting point 0s, static conversion of output pressure of a pressure reducing valve is defined by (nT ₁+T₀) s, wherein n is the number of bottle valves, T ₁ is time required for completely opening a single bottle valve, T0 is total starting duration preset by at least one downstream electromagnetic valve, at the moment, the output pressure of the pressure reducing valve is converted from static to dynamic, and a parameter range corresponding to output pressure monitoring is converted from a fault range P _{Static state} ＞x₃,P _{Static state} ＜x₁ corresponding to static parameters to a fault range P _{Dynamic movement} ＞x₂,P _{Dynamic movement} ＜x₁ corresponding to dynamic parameters.

In some embodiments, the fuel cell system includes a hydrogen supply subsystem including the target valve member and at least one bottle valve, at least one downstream solenoid valve is disposed between the target valve member and the stack, for example, the target valve member is a pressure reducing valve, a hydrogen inlet solenoid valve is disposed between the pressure reducing valve and the stack, the determining a first target time for the fuel cell system to switch from the shutdown state to the operational state includes:

S211B, controlling the at least one bottle valve to start according to a bottle valve starting instruction of the whole vehicle controller;

It can be understood that the hydrogen system controller HMS controls the at least one bottle valve to start according to the bottle valve start command of the whole vehicle controller, detects whether the bottle valve is started, and feeds back the detection result to the whole vehicle controller, and after receiving the message that all the bottle valves fed back by the HMS have been opened, the whole vehicle controller notifies the hydrogen fuel cell system controller (FCU) to control the hydrogen inlet electromagnetic valve to be opened.

Step S212B, determining a third time when the last detected bottle valve is started, and taking a fourth time after the third time passes through the preset starting total time length of the at least one downstream electromagnetic valve as a first target time when the fuel cell system is switched from the shut-down state to the running state.

It can be appreciated that the accuracy of determining the starting time of the bottle valve can be improved by detecting the actual starting time of each bottle valve by the hydrogen system controller HMS, and the accuracy of determining the monitoring and switching time of the dynamic and static parameters of the pressure reducing valve can be further improved.

In some embodiments, the preset total activation time period of the at least one downstream solenoid valve is determined as follows:

1) Acquiring a target parameter value of a start-up influencing parameter, wherein the start-up influencing parameter is used for representing a parameter influencing the start-up duration of the at least one downstream electromagnetic valve;

It should be noted that, because the activation time of the solenoid valve may be affected by the activation affecting parameters, such as temperature, humidity, etc., the corresponding activation time of the same downstream solenoid valve may be different under different target parameter values of the activation affecting parameters. For example: since the lower the temperature of the electric pile is, the longer the time required for the electric pile to start preheating is, and since the hydrogen inlet electromagnetic valve needs to be opened after the electric pile is preheated, the longer the time required for the electric pile to start preheating is, the larger the corresponding hydrogen inlet electromagnetic valve opening time T ₀ is.

2) And determining the preset starting total duration of at least one downstream electromagnetic valve corresponding to the target parameter value according to the preset corresponding relation between the parameter value of the starting influence parameter and the starting duration of the at least one downstream electromagnetic valve.

For example: and calibrating the preheating time of the electric pile at isothermal nodes of minus 10 ℃, minus 20 ℃, minus 30 ℃ and minus 40 ℃ aiming at a low-temperature environment below 0 ℃, so as to calibrate the starting time of the downstream electromagnetic valve, and establishing a corresponding relation between each temperature value and each starting time of the downstream electromagnetic valve, for example, establishing a mapping relation table, so that the preset starting total time of at least one downstream electromagnetic valve corresponding to the target parameter value can be determined through table lookup.

Based on the above, the preset starting total time length of the downstream electromagnetic valve is adjusted according to the starting influencing parameter value, so that the failure caused by the influence of the starting parameter on the transition boundary between the static parameter monitoring and the dynamic parameter monitoring can be avoided, and the accuracy of the parameter monitoring of the target valve piece is further improved.

And S22, monitoring whether the dynamic parameters of the target valve member meet the preset dynamic parameter range or not from the first target moment.

In the embodiment of the application, the first target moment when the fuel cell system is switched from the shutdown state to the running state is determined, and the dynamic parameters of the target valve member are monitored from the first target moment, so that the condition that the target valve member enters the dynamic running state and the parameters are monitored by adopting the static parameter range can be avoided, and the accuracy of monitoring the parameters of the target valve member is improved.

In some embodiments, when monitoring whether the static parameter of the target valve member meets a preset static parameter range if the fuel cell system is in the shutdown state, the method further comprises:

S31, determining a second target moment when the fuel cell system is switched from the running state to the shut-down state;

It can be understood that, because the parameter monitoring mode of the target valve member is in a dynamic switching process, for example, when the fuel cell system enters the shutdown state from the operation state, the static parameter of the target valve member needs to be monitored, and therefore, particularly when the parameter monitoring mode of the target valve member is switched, the parameter monitoring mode has an important meaning on improving the accuracy of the parameter monitoring of the target valve member, avoiding that the target valve member has entered the dynamic operation state, monitoring the parameter thereof by adopting the static parameter range, or monitoring the parameter thereof by adopting the dynamic parameter range.

In some embodiments, the fuel cell system includes a hydrogen supply subsystem including the target valve member and at least one bottle valve, at least one downstream solenoid valve is disposed between the target valve member and the stack, for example, the target valve member is a pressure reducing valve, a hydrogen inlet solenoid valve is disposed between the pressure reducing valve and the stack, the determining the second target time for the fuel cell system to switch from the operating state to the shutdown state includes:

1) Determining a fifth moment when a bottle valve closing instruction of the whole vehicle controller is received;

2) And taking a sixth time after a second target time period from the fifth time as a second target time period when the fuel cell system is switched from the running state to the closing state, wherein the second target time period is a preset closing total time period of the at least one bottle valve.

Specifically, when the vehicle runs or stops, the fuel cell system has no power requirement, the downstream hydrogen inlet electromagnetic valve is in a closed state or the hydrogen inlet electromagnetic valve is closed after the electric pile is completely purged, at the moment, each bottle valve is closed, and the output pressure of the pressure reducing valve is converted from dynamic to static. The output pressure monitoring condition is defined by the transition from P _{Dynamic movement} ＞x₂,P _{Dynamic movement} ＜x₁ to P _{Static state} ＞x₃,P _{Static state} ＜x₁, the determination of the monitoring moment of the dynamic transition of the output pressure to static, and the moment of the last bottle valve closing.

And S32, monitoring whether the static parameters of the target valve member meet a preset static parameter range or not from the second target moment.

In some embodiments, the method further comprises:

If the dynamic parameter of the target valve member is monitored to not meet the dynamic parameter range, or the static parameter of the target valve member is monitored to not meet the static parameter range, fault alarm information is sent to the whole vehicle controller, so that the whole vehicle controller makes corresponding coping strategies according to the fault alarm information, such as controlling the fuel cell system to be closed, and the like, thereby avoiding that the static pressure of the pressure reducing valve is too high when the vehicle is parked for a long time or started in a low-temperature environment, and leading the vehicle to be unable to start normally in early warning.

Based on the above disclosure, the embodiment of the present application determines, based on the characteristic that the dynamic parameter range and the static parameter range of the target valve member are different, a parameter monitoring manner for the target valve member according to the target state of the fuel cell system, that is, if the fuel cell system is in an operating state, monitors whether the dynamic parameter of the target valve member meets the preset dynamic parameter range, if the fuel cell system is in a shutdown state, monitors whether the static parameter of the target valve member meets the preset static parameter range, and monitors the dynamic and static parameters of the valve member in a differentiated manner, thereby improving the accuracy of monitoring the performance of the valve member and further improving the operating stability of the fuel cell system.

Referring to fig. 2, a block diagram of a valve member monitoring device according to an embodiment of the present application is shown.

As shown in fig. 2, according to a second aspect of the embodiment of the present application, there is provided a valve member monitoring apparatus 200 applied to a fuel cell system provided with a target valve member, the apparatus comprising:

An acquisition unit 201 for acquiring a target state of the fuel cell system, the target state being an operating state or a shutdown state;

A first monitoring unit 202, configured to monitor whether a dynamic parameter of the target valve element meets a preset dynamic parameter range if the fuel cell system is in the operating state, where the dynamic parameter range is used to represent a normal parameter range of the target valve element when the fuel cell system is in the operating state;

And the second monitoring unit 203 is configured to monitor, if the fuel cell system is in the shutdown state, whether the static parameter of the target valve member meets a preset static parameter range, where the static parameter range is used to represent a normal parameter range of the target valve member when the fuel cell system is in the shutdown state.

According to a third aspect of embodiments of the present application, there is provided a computer readable storage medium having stored therein at least one computer program instruction that is loaded and executed by a processor to implement operations performed by a method as in any of the first aspects.

The computer readable storage medium may take the form of a portable compact disc read only memory (CD-ROM) and include program code that can be run on a terminal device, such as a personal computer. However, the computer-readable storage medium of the present application is not limited thereto, and in the present application, the readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).

Referring to FIG. 3, a schematic diagram of a computer system suitable for use in implementing an embodiment of the present application is shown.

According to a fourth aspect of embodiments of the present application, there is provided an electronic device comprising one or more processors and one or more memories, the one or more memories having stored therein at least one piece of program code that is loaded and executed by the one or more processors to carry out operations performed by the method of any of the first aspects.

As shown in fig. 3, the electronic device 400 is embodied in the form of a general purpose computing device. The components of electronic device 400 may include, but are not limited to: the at least one processing unit 410, the at least one memory unit 420, and a bus 430 connecting the various system components, including the memory unit 420 and the processing unit 410.

Wherein the storage unit stores program code that is executable by the processing unit 410 such that the processing unit 410 performs steps according to various exemplary embodiments of the present application described in the above-described "example methods" section of the present specification.

The storage unit 420 may include readable media in the form of volatile storage units, such as Random Access Memory (RAM) 421 and/or cache memory 422, and may further include Read Only Memory (ROM) 423.

The storage unit 420 may also include a program/utility 424 having a set (at least one) of program modules 425, such program modules 425 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.

Bus 430 may be a local bus representing one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or using any of a variety of bus architectures.

The electronic device 400 may also communicate with one or more external devices 500 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 400, and/or any device (e.g., router, modem, etc.) that enables the electronic device 400 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 450. Also, electronic device 400 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 460. As shown, the network adapter 460 communicates with other modules of the electronic device 400 over the bus 430. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 400, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.

The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software that is executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated in one processing unit, each unit may exist alone physically, or two or more units may be integrated in one unit.

In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of units may be a logic function division, and there may be another division manner in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described as separate components may or may not be physically separate, and components as control devices may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method of the various embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The above description is only an example of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A method of monitoring a valve member for use in a fuel cell system provided with a target valve member, the method comprising:

Acquiring a target state of the fuel cell system, wherein the target state is an operating state or a shutdown state;

if the fuel cell system is in the running state, monitoring whether the dynamic parameter of the target valve member meets a preset dynamic parameter range, wherein the dynamic parameter range is used for representing the normal parameter range of the target valve member when the fuel cell system is in the running state;

If the fuel cell system is in the shutdown state, monitoring whether the static parameter of the target valve member meets a preset static parameter range, wherein the static parameter range is used for representing a normal parameter range of the target valve member when the fuel cell system is in the shutdown state.

2. The method of claim 1, wherein when monitoring whether the dynamic parameter of the target valve member meets a predetermined dynamic parameter range if the fuel cell system is in the operating state, the method further comprises:

Determining a first target time at which the fuel cell system is switched from the shutdown state to the operation state;

and monitoring whether the dynamic parameters of the target valve member meet the preset dynamic parameter range or not from the first target moment.

3. The method of claim 2, wherein the fuel cell system includes a hydrogen supply subsystem including the target valve member and at least one bottle valve, at least one downstream solenoid valve being disposed between the target valve member and the stack, the determining a first target time for the fuel cell system to switch from the shutdown state to the run state comprising:

determining a first moment when a bottle valve starting instruction of the whole vehicle controller is received;

And taking a second time after a first target time period from the first time as a first target time for switching the fuel cell system from the shut-down state to the running state, wherein the first target time period comprises a preset starting total time period of the at least one bottle valve and a preset starting total time period of the at least one downstream electromagnetic valve.

4. The method of claim 2, wherein the fuel cell system includes a hydrogen supply subsystem including the target valve member and at least one bottle valve, at least one downstream solenoid valve being disposed between the target valve member and the stack, the determining a first target time for the fuel cell system to switch from the shutdown state to the run state comprising:

Controlling the at least one bottle valve to be started according to a bottle valve starting instruction of the whole vehicle controller;

determining a third time when the last detected bottle valve is started, and taking a fourth time after the third time passes through the preset starting total time length of the at least one downstream electromagnetic valve as a first target time when the fuel cell system is switched from the shut-down state to the running state.

5. The method according to claim 3 or 4, characterized in that the preset total activation time of the at least one downstream solenoid valve is determined in the following way:

Acquiring a target parameter value of a start-up influencing parameter, wherein the start-up influencing parameter is used for representing a parameter influencing the start-up duration of the at least one downstream electromagnetic valve;

And determining the preset starting total duration of at least one downstream electromagnetic valve corresponding to the target parameter value according to the preset corresponding relation between the parameter value of the starting influence parameter and the starting duration of the at least one downstream electromagnetic valve.

6. The method of claim 1, wherein, when monitoring whether the static parameter of the target valve member meets a preset static parameter range if the fuel cell system is in the shutdown state, the method further comprises:

Determining a second target time at which the fuel cell system is switched from the operating state to the shutdown state;

And monitoring whether the static parameter of the target valve member meets a preset static parameter range or not from the second target moment.

7. The method of claim 6, wherein the fuel cell system includes a hydrogen supply subsystem including the target valve member and at least one bottle valve, at least one downstream solenoid valve being disposed between the target valve member and the stack, the determining a second target time for the fuel cell system to switch from the operating state to the shutdown state comprising:

determining a fifth moment when a bottle valve closing instruction of the whole vehicle controller is received;

And taking a sixth time after a second target time period from the fifth time as a second target time period when the fuel cell system is switched from the running state to the closing state, wherein the second target time period is a preset closing total time period of the at least one bottle valve.

8. The method according to claim 1, wherein the method further comprises:

and if the dynamic parameter of the target valve part is monitored to not meet the dynamic parameter range, or the static parameter of the target valve part is monitored to not meet the static parameter range, sending fault alarm information to the whole vehicle controller.

9. A valve member monitoring device for use in a fuel cell system having a target valve member, the device comprising:

An acquisition unit configured to acquire a target state of the fuel cell system, the target state being an operating state or a shutdown state;

The first monitoring unit is used for monitoring whether the dynamic parameter of the target valve member meets a preset dynamic parameter range or not if the fuel cell system is in the running state, and the dynamic parameter range is used for representing the normal parameter range of the target valve member when the fuel cell system is in the running state;

and the second monitoring unit is used for monitoring whether the static parameter of the target valve member meets a preset static parameter range or not if the fuel cell system is in the shutdown state, wherein the static parameter range is used for representing the normal parameter range of the target valve member when the fuel cell system is in the shutdown state.

10. A computer readable storage medium having stored therein at least one computer program instruction that is loaded and executed by a processor to implement operations performed by a method as claimed in any one of claims 1 to 8.