CN114234038B - A hydrogen management system and a hydrogen cylinder valve state detection method thereof - Google Patents

Abstract

The application provides a hydrogen management system and a hydrogen cylinder valve state detection method thereof, which are applied to a controller in the hydrogen management system, wherein the method is used for determining the effective hydrogen storage volume of the hydrogen management system; the effective hydrogen storage volume is the total effective volume of each hydrogen cylinder in the hydrogen management system which can actually store hydrogen; judging whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet preset hydrogen storage fault conditions or not; if the judgment result is yes, the condition that the cylinder valve of the hydrogen cylinder in the hydrogen management system has a fault is judged, namely, the problem that whether each hydrogen cylinder valve has a clamping stagnation or cannot be opened can be solved under the condition that the plurality of hydrogen cylinders share one pressure sensor by comparing whether the effective hydrogen storage volume and the total hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage fault condition or not.

Description

A hydrogen management system and a hydrogen cylinder valve state detection method thereof

technical field

The invention relates to the technical field of detection, in particular to a hydrogen management system and a method for detecting the state of a hydrogen cylinder valve.

Background technique

With the implementation of the national new energy strategy, hydrogen fuel cell vehicles are becoming more and more popular. At present, hydrogen fuel cell vehicles mainly control the on-off of the hydrogen cylinder valve through the hydrogen management system (Hydrogen Management System, HMS), realize the charging and discharging of hydrogen, and detect its parameters such as pressure, temperature and leakage, so as to realize the rational use of hydrogen and Ensure hydrogen safety.

In the existing hydrogen management system, hydrogen is provided by hydrogen cylinders. Generally, 4 or 8 hydrogen cylinders of varying numbers are used in parallel in the system, and each hydrogen cylinder is equipped with a corresponding hydrogen cylinder valve. However, in order to save costs, not every hydrogen cylinder is equipped with a pressure sensor, but multiple hydrogen cylinders share one pressure sensor. When multiple hydrogen cylinders share the same pressure sensor, the hydrogen management system cannot detect whether the valves of each hydrogen cylinder are stuck or cannot be opened.

Contents of the invention

In this regard, the present application provides a hydrogen management system and a hydrogen cylinder valve state detection method thereof, which can detect whether each hydrogen cylinder valve is stuck or cannot be opened when multiple hydrogen cylinders share a pressure sensor.

In order to achieve the above purpose, embodiments of the present invention provide the following technical solutions:

The first aspect of the present application discloses a method for detecting the state of a hydrogen cylinder valve in a hydrogen management system, which is applied to a controller in the hydrogen management system, and the method includes:

Determine the effective hydrogen storage volume of the hydrogen management system; wherein, the effective hydrogen storage volume is the total effective volume that each hydrogen cylinder in the hydrogen management system can actually store hydrogen;

Judging whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage fault condition;

If the determination result is yes, it is determined that the hydrogen cylinder valve in the hydrogen management system is faulty.

Optionally, in the hydrogen cylinder valve state detection method of the hydrogen management system described above, the determination of the effective hydrogen storage volume of the hydrogen management system includes:

Determine the remaining first hydrogen remaining in the hydrogen management system before filling the hydrogen;

After the hydrogen filling is completed, the actual hydrogen filling amount of the hydrogen management system is obtained, and the second remaining hydrogen remaining in the hydrogen management system after hydrogen filling is determined; wherein, the remaining hydrogen is the The total amount of remaining hydrogen in each of the hydrogen cylinders in the hydrogen management system;

An effective hydrogen storage volume of the hydrogen management system is calculated based on the first residual hydrogen volume, the actual hydrogen filling volume, and the second residual hydrogen volume.

Optionally, in the hydrogen cylinder valve state detection method of the hydrogen management system described above, the determination of the effective hydrogen storage volume of the hydrogen management system includes:

determining a third amount of hydrogen remaining in the hydrogen management system prior to initiation of the drive cycle;

After the end of the driving cycle, the actual hydrogen consumption of the hydrogen management system is obtained, and the fourth residual amount of hydrogen remaining in the hydrogen management system after the end of the driving cycle is determined; wherein, the remaining amount of hydrogen is the hydrogen The total amount of remaining hydrogen in each of the hydrogen cylinders in the management system;

An effective hydrogen storage volume of the hydrogen management system is calculated based on the third residual hydrogen volume, the actual hydrogen consumption, and the fourth residual hydrogen volume.

Optionally, in the hydrogen cylinder valve state detection method of the hydrogen management system described above, judging whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage failure conditions includes:

determining the difference between the total hydrogen storage volume and the effective hydrogen storage volume;

judging whether the ratio between the difference and the volume of a single hydrogen cylinder in the hydrogen management system is greater than a preset fault threshold;

If the judgment result is yes, it is judged that the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage fault condition;

If the determination result is negative, it is determined that the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system do not meet the preset hydrogen storage fault condition.

Optionally, in the hydrogen cylinder valve state detection method of the hydrogen management system, after judging whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage failure conditions, if the judgment result If no, also include:

It is determined that there is no fault in the hydrogen cylinder valve in the hydrogen management system.

Optionally, in the above-mentioned method for detecting the state of the hydrogen cylinder valve of the hydrogen management system, after it is determined that the cylinder valve of the hydrogen cylinder in the hydrogen management system is faulty, it further includes:

A fault alarm is generated; wherein, the fault alarm is used to prompt maintenance of the hydrogen cylinder valve.

The second aspect of the present application discloses a hydrogen management system, including: a hydrogenation module, a hydrogen supply module, a controller, and a hydrogen cylinder set;

Wherein, the hydrogen cylinder group includes N hydrogen cylinders; N is a positive integer;

Each of the hydrogen cylinders is provided with a corresponding hydrogen cylinder valve and a temperature sensor;

Each of the hydrogen cylinders is connected in parallel and shares the same pressure sensor;

The controller is respectively connected with the temperature sensor and the pressure sensor, and is used to realize the hydrogen cylinder valve state detection method of the hydrogen management system according to any one of claims 1-6.

Optionally, in the above hydrogen management system, N is 4.

Optionally, in the above hydrogen management system, N is 8.

Optionally, in the above-mentioned hydrogen management system, the hydrogenation module is used to fill each of the hydrogen cylinders with hydrogen through the filling port;

The hydrogen supply module is used to depressurize the hydrogen and supply it to hydrogen-using equipment.

Based on the hydrogen cylinder valve state detection method of the hydrogen management system provided by the present invention, it is applied to the controller in the hydrogen management system. After the method determines the effective hydrogen storage volume of the hydrogen management system; wherein, the effective hydrogen storage volume is hydrogen Each hydrogen cylinder in the management system can actually store the total effective volume of hydrogen; judge whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage failure conditions; There is a fault in the cylinder valve of the hydrogen cylinder, that is, the application can meet the preset hydrogen storage failure conditions by comparing the effective hydrogen storage volume and the total hydrogen storage volume of the hydrogen management system when multiple cylinder valves share a pressure sensor , Determine whether the hydrogen cylinder valve in the hydrogen management system is faulty, and solve the problem that when multiple hydrogen cylinder valves share a pressure sensor, it is impossible to detect whether each hydrogen cylinder valve is stuck or cannot be opened.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

FIG. 1 is a flow chart of a method for detecting the state of a hydrogen cylinder valve in a hydrogen management system provided in an embodiment of the present application;

Figure 2 and Figure 3 are two flow charts for determining the effective hydrogen storage volume of the hydrogen management system provided by the embodiment of the present application;

Fig. 4 is a flow chart for judging whether the preset hydrogen storage fault condition is met provided by the embodiment of the present application;

Figures 5 to 7 are flow charts of another three hydrogen management system hydrogen cylinder valve state detection methods provided in the embodiments of the present application;

FIG. 8 and FIG. 9 are structural schematic diagrams of two hydrogen management systems provided in the embodiments of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The embodiment of the present application provides a method for detecting the state of the hydrogen cylinder valve of the hydrogen management system, which can detect whether the valves of each hydrogen cylinder are stuck or cannot be opened when multiple hydrogen cylinders share a pressure sensor.

The hydrogen cylinder valve state detection method of the hydrogen management system can be applied to the controller in the hydrogen management system, please refer to Figure 1, and the method can include the following steps:

S100. Determine the effective hydrogen storage volume of the hydrogen management system.

Among them, the effective hydrogen storage volume is the total effective volume that each hydrogen cylinder in the hydrogen management system can actually store hydrogen.

In practical applications, the effective hydrogen storage volume can be calculated by the remaining amount of hydrogen in the hydrogen management system before and after hydrogen injection, and the effective hydrogen storage volume can also be calculated by the amount of hydrogen consumed before and after the start of the driving cycle; of course, not only Limited to this, other existing methods can also be used to determine the effective hydrogen storage volume of the hydrogen management system. This application does not specifically limit the specific method of determining the effective hydrogen storage volume. No matter what method is used, it belongs to the protection of this application. scope.

In practical applications, if the effective hydrogen storage volume is calculated by calculating the remaining hydrogen gas remaining in the hydrogen management system before and after hydrogen filling, the specific process of performing step S100 to determine the effective hydrogen storage volume of the hydrogen management system can be shown in Figure 2 , may include the following steps:

S200. Determine the remaining first hydrogen remaining in the hydrogen management system before hydrogen filling.

Wherein, the remaining amount of hydrogen is the total amount of remaining hydrogen in each hydrogen cylinder in the hydrogen management system.

In practical applications, the formula for calculating the remaining hydrogen in the hydrogen management system can be as follows:

P=-0.0027(ρ) ² +0.75ρ+0.5789;

M = ρV;

Among them, P is the current pressure measurement value of the hydrogen cylinder, and the unit can be MPa; T is the temperature measurement value of the hydrogen cylinder, and the unit can be ℃; V indicates the volume of the hydrogen cylinder; 288 indicates the corresponding Calvin temperature at 15℃, 0.0027 , 0.75 and 0.5789 represent the coefficients of the formula obtained by fitting the curve respectively.

If before filling hydrogen, the pressure measurement value of each hydrogen cylinder in the hydrogen management system is P ₀ , the temperature measurement value is T ₀ , and the volume of the hydrogen cylinder is V ₀ , the remaining first hydrogen remaining in the hydrogen management system before hydrogen filling M ₀ can be calculated by the following formula:

S202. After the hydrogen filling is completed, obtain the actual hydrogen filling amount of the hydrogen management system, and determine the second hydrogen remaining amount in the hydrogen management system after the hydrogen filling.

If after the hydrogen filling is completed, the pressure measurement value of each hydrogen cylinder in the hydrogen management system is P ₁ , the temperature measurement value is T ₁ , and the volume of the hydrogen cylinder is V ₁ , the remaining second hydrogen in the hydrogen management system after hydrogen filling is The amount _M1 can be calculated by the following formula:

The hydrogen filling amount M _Inj can be obtained by calculating according to the first hydrogen remaining amount M ₀ and the second hydrogen remaining amount M ₁ . Wherein, M _Inj =M ₁ -M ₀ .

In practical applications, the actual hydrogen filling amount M _InjRea of the hydrogen management system can be obtained through the hydrogenation equipment of the hydrogenation station. Among them, the driver can cooperate with the vehicle dashboard to read the actual hydrogen filling amount from the vehicle dashboard, and then transmit the actual hydrogen filling amount M _InjRea to the controller; or, pre-set the code on the controller The switch transmits the actual hydrogen filling amount M _InjRea to the controller through the coding switch.

S204. Calculate and obtain an effective hydrogen storage volume of the hydrogen management system based on the first remaining amount of hydrogen, the actual hydrogen filling amount, and the second remaining amount of hydrogen.

Among them, M _Inj ＝M _InjReal ＝M ₁ -M ₀ , since the pressure measurement value is P ₀ , the temperature measurement value is T ₀ , the pressure measurement value is P ₁ , and the temperature measurement value is T ₁ , all of which can be measured by the controller through the sensor The known parameters of the actual hydrogen filling amount M _InjRea can also be obtained through the vehicle dashboard or input, and the effective hydrogen storage volume V _real1 of the hydrogen management system can be obtained by substituting the following formulas (1) to (4).

_MInj ＝ _MInjReal ——formula (1);

M _Inj ＝M ₁ -M ₀ —— Formula (2);

If the effective hydrogen storage volume is calculated by the amount of hydrogen consumed before and after the start of the driving cycle, the specific process of performing step S100 and determining the effective hydrogen storage volume of the hydrogen management system can be shown in Figure 3, which can include the following steps:

S300. Determine the third remaining amount of hydrogen remaining in the hydrogen management system before the start of the driving cycle.

Wherein, the remaining amount of hydrogen is the total amount of remaining hydrogen in each hydrogen cylinder in the hydrogen management system.

If the pressure measurement value of each hydrogen cylinder in the hydrogen management system is P ₃ and the temperature measurement value is T ₃ before the driving cycle starts, the remaining third hydrogen remaining amount M ₃ in the hydrogen management system before the driving cycle can be calculated by the following formula :

S302. After the end of the driving cycle, acquire the actual hydrogen consumption of the hydrogen management system, and determine the fourth residual amount of hydrogen remaining in the hydrogen management system after the end of the driving cycle.

If after the driving cycle ends, the pressure measurement value of each hydrogen cylinder in the hydrogen management system is P ₄ , and the temperature measurement value is T ₄ , the remaining fourth hydrogen remaining amount M ₄ in the hydrogen management system after the driving cycle can be calculated by the following formula get:

In practical applications, the actual hydrogen consumption M _Consun of the hydrogen management system can be obtained through statistical calculations using hydrogen equipment. Among them, the calculated actual hydrogen consumption M _Consun can be transmitted to the controller through the CAN protocol message.

S304. Calculate and obtain an effective hydrogen storage volume of the hydrogen management system based on the third remaining amount of hydrogen, the actual hydrogen consumption, and the fourth remaining amount of hydrogen.

Among them, M _Inj ＝M _Consum ＝M ₃ -M ₄ , because the pressure measurement value is P ₃ , the temperature measurement value is T ₃ , the pressure measurement value is P ₄ , and the temperature measurement value is T ₄ , all of which can be measured by the controller through the sensor The known parameters of the actual hydrogen consumption M _Consun can also be obtained through statistical calculations using hydrogen equipment, and the effective hydrogen storage volume V _real2 of the hydrogen management system can be obtained by substituting the following formulas (5) to (8).

_MInj ＝ _MConsum ——formula (5);

_MInj ＝ _M3 - _M4 ——formula (6);

It should be noted that, in practical applications, before determining the effective hydrogen storage volume of the hydrogen management system based on the remaining amount of hydrogen before and after the start of the driving cycle and the actual hydrogen consumption, it is also possible to first determine whether the actual hydrogen consumption exceeds the preset value. Threshold; when it is judged that the actual hydrogen consumption exceeds the preset threshold, the effective hydrogen storage volume of the hydrogen management system is determined according to the actual hydrogen consumption before and after the driving cycle starts and ends.

Among them, the purpose of judging whether the actual hydrogen consumption exceeds the preset threshold is to prevent misjudgment when the hydrogen consumption is too low, the calculation error accuracy is not enough, and the measurement and calculation errors are greater than the actual hydrogen consumption.

It should be noted that the temperature measurement value used to calculate the effective hydrogen storage volume of the hydrogen management system can be the temperature measurement value measured by the temperature sensor on a hydrogen cylinder in the hydrogen management system, or it can be the temperature measurement value of each hydrogen gas in the hydrogen management system. The average value of the temperature measurement values measured by the temperature sensor on the bottle; in practical applications, it can also be calculated separately for each hydrogen bottle.

S102. Determine whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet a preset hydrogen storage failure condition.

Wherein, the total hydrogen storage volume of the hydrogen management system is the total volume of each hydrogen storage bottle in the hydrogen management system. Assuming that the volume of a single hydrogen cylinder in the hydrogen management system is V _one and the number of hydrogen cylinders is N, the total hydrogen storage volume in the hydrogen management system is V _N =N×V _one .

It should be noted that both the volume of a single hydrogen cylinder and the number N of hydrogen cylinders can be obtained through pre-calibration, or can be obtained through measurement by other existing methods. This application does not make specific limitations, and both belong to the scope of protection of this application.

In practical applications, the specific process of executing step S102 and judging whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage failure conditions can be shown in Figure 4, and can include the following steps:

S400. Determine the difference between the total hydrogen storage volume and the effective hydrogen storage volume.

Wherein, the total hydrogen storage volume can be subtracted from the effective hydrogen storage volume to obtain the difference between the two.

S402. Determine whether the ratio between the difference value and the volume of a single hydrogen cylinder in the hydrogen management system is greater than a preset failure threshold.

Wherein, the preset fault value may be a percentage value, which represents a percentage of the volume of a hydrogen cylinder. For example, the desirable value is 50%, that is, when the effective hydrogen storage volume is smaller than the total hydrogen storage volume by more than half a hydrogen cylinder, it can be considered that a certain hydrogen cylinder valve in the hydrogen management system is faulty; otherwise, it can be considered that the hydrogen cylinder in the hydrogen management system is The valve is not faulty.

It should be noted that the preset fault value can also be 60%, 80%, 100%, 120%, etc., which can be determined according to the specific application environment and user needs. This application does not specifically limit it, and it belongs to this application scope of protection.

If the judgment result is yes, execute step S404; if the judgment result is no, execute step S406.

S404. It is determined that the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage fault condition.

It can be understood that, assuming that the total hydrogen storage volume is V _N , the effective hydrogen storage volume is V _real , the volume of a single hydrogen cylinder is V _one , and the default fault value is Fac _Thre , when (V _N -V _real )/V _one is satisfied >Fac _Thre , it is determined that the total hydrogen storage volume and effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage failure conditions.

S406. It is determined that the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system do not meet the preset hydrogen storage fault condition.

It can be understood that, assuming that the total hydrogen storage volume is V _N , the effective hydrogen storage volume is V _real , the volume of a single hydrogen cylinder is V _one , and the default fault value is Fac _Thre , when (V _N -V _real )/V _one is satisfied ≤Fac _Thre , it is determined that the total hydrogen storage volume and effective hydrogen storage volume of the hydrogen management system do not meet the preset hydrogen storage failure conditions.

In addition to the above methods, in practical applications, it is also possible to judge whether the difference between the total hydrogen storage volume and the effective hydrogen storage volume is greater than the preset value, and judge whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset value. Hydrogen storage fault condition. Wherein, the specific value of the preset value can be determined depending on the application environment and user requirements, and the present application does not make specific limitations, and all belong to the protection scope of the present application.

If the judgment result is yes, that is, it is judged that the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system satisfy the preset hydrogen storage fault condition, then step S104 is executed.

S104. It is determined that the hydrogen cylinder valve in the hydrogen management system is faulty.

In practical applications, when it is judged that the total hydrogen storage volume and effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage failure conditions, it means that a certain hydrogen cylinder valve in the hydrogen management system is faulty, and the hydrogen cylinder where the faulty valve is located cannot function normally. Store hydrogen and release hydrogen.

Based on the above, the method for detecting the state of the hydrogen cylinder valve of the hydrogen management system provided in this embodiment is applied to the controller in the hydrogen management system. After the method determines the effective hydrogen storage volume of the hydrogen management system; wherein, the effective hydrogen storage volume is the total effective volume of hydrogen that can actually be stored in each hydrogen cylinder in the hydrogen management system; judge whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage failure conditions; There is a fault in the cylinder valve of the hydrogen cylinder in the management system, that is to say, this application can compare the effective hydrogen storage volume and the total hydrogen storage volume of the hydrogen management system to meet the preset storage volume when multiple hydrogen cylinder valves share a pressure sensor. Hydrogen failure conditions, determine whether the hydrogen cylinder valve in the hydrogen management system is faulty, and solve the problem that when multiple hydrogen cylinders share a pressure sensor, it is impossible to detect whether each hydrogen cylinder valve is stuck or cannot be opened.

In addition, the hydrogen cylinder valve state detection method of the hydrogen management system provided by this application can use the existing sensor configuration in the hydrogen management system to detect whether the hydrogen cylinder valve is faulty, without additional sensors, which not only improves system stability, but also saves costs.

Optionally, in another embodiment provided by the present application, after step S102 is performed to judge whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage failure conditions, if the judgment result is no, that is, It is judged that the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system do not meet the preset hydrogen storage failure conditions, please refer to Figure 5, the method may also include:

S500. It is determined that there is no fault in the hydrogen cylinder valve in the hydrogen management system.

In practical applications, when it is judged that the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system do not meet the preset hydrogen storage failure conditions, it can be shown that there is no failure of the hydrogen cylinder valve in the hydrogen management system.

Optionally, in another embodiment provided by the present application, after performing step S104 and determining that there is a fault in the hydrogen cylinder valve in the hydrogen management system, please refer to FIG. 6 , the method may further include:

S600. Generate a fault alarm.

Among them, the fault alarm is used to prompt maintenance of the hydrogen cylinder valve.

In practical applications, when it is determined that the hydrogen cylinder valve in the hydrogen management system is faulty, a fault alarm can be generated to prompt the driver to overhaul the hydrogen cylinder valve.

It should be noted that in practical applications, the effective hydrogen storage volume calculated based on the hydrogen filling amount and the effective hydrogen storage volume calculated based on the driving cycle consumption can also be compared and judged to comprehensively evaluate the hydrogen cylinder in the hydrogen management system. Fault state of the valve.

Among them, if the effective hydrogen storage volume calculated based on the hydrogen filling amount is judged, and the result of the judgment based on the effective hydrogen storage volume calculated based on the hydrogen filling amount is both faulty, it can be confirmed that a certain hydrogen storage volume in the hydrogen management system There is a problem with the cylinder valve or multiple hydrogen cylinder valves, and a failure alarm is generated to remind the driver that it must be overhauled.

If the effective hydrogen storage volume calculated based on the hydrogen filling amount is judged, and one of the results of the judgment based on the effective hydrogen storage volume calculated based on the hydrogen filling amount is not faulty, it can be confirmed that the hydrogen management system There may be a fault in the hydrogen cylinder valve, but the fault is not serious enough to generate an alarm to remind the driver to check it if possible.

If the judgment is made based on the effective hydrogen storage volume calculated based on the hydrogen filling amount, and the result of the judgment based on the effective hydrogen storage volume calculated based on the hydrogen filling amount is not faulty, then the hydrogen cylinder valve in the hydrogen management system can be confirmed. There is no fault problem and can be used normally.

In practical applications, the order of comparing and judging the effective hydrogen storage volume calculated based on the hydrogen filling amount and the effective hydrogen storage volume calculated based on the driving cycle consumption can be determined according to the specific application environment and user needs, and the basis can be executed first. The effective hydrogen storage volume calculated based on the consumption of the driving cycle is then compared and judged with the effective hydrogen storage volume calculated based on the hydrogen filling amount; or the effective hydrogen storage volume calculated based on the hydrogen filling amount can be compared and judged first , and then compare and determine the effective hydrogen storage volume calculated based on the driving cycle consumption, that is, the situation shown in FIG. 7 .

In combination with the hydrogen cylinder valve state detection method of the hydrogen management system provided in the above embodiments, another embodiment of the present application also provides a hydrogen management system. Referring to FIG. 8 and FIG. 9, the hydrogen management system may include: a hydrogenation module, Hydrogen supply module, controller (not shown in the figure) and hydrogen cylinder group;

Wherein, the hydrogen cylinder group includes N hydrogen cylinders; N is a positive integer;

Each hydrogen cylinder is equipped with a corresponding hydrogen cylinder valve and temperature sensor;

Each hydrogen cylinder is connected in parallel and shares the same pressure sensor;

The controller is respectively connected with the temperature sensor and the pressure sensor, and is used to implement the method for detecting the state of the hydrogen cylinder valve of the hydrogen management system as described in any one of the above embodiments.

In practical applications, N can be 4 (that is, the situation shown in Figure 8) or 8; of course, it is not limited to this, and can also be determined according to the specific application environment and user needs. The specific value of N in this application Without limitation, all belong to the protection scope of the present application.

In practical applications, the hydrogenation module is used to refill each hydrogen cylinder with hydrogen through the hydrogenation port. Wherein, as shown in FIG. 9 , the hydrogenation module may include: a filter FIL, a pressure gauge PG, and a filling port FR.

The hydrogen supply module is used to depressurize hydrogen and supply it to hydrogen equipment. Wherein, as shown in FIG. 9 , the hydrogen supply module may include: a filter FIL, a pressure reducer, a pressure sensor PTL, a needle valve NV, a safety valve PRV, a low-pressure solenoid valve, a manual ball valve, and the like.

It should be noted that, for the relevant description of the hydrogen cylinder valve state detection method of the hydrogen management system, reference may be made to the embodiments corresponding to FIGS. 1 to 7 , which will not be repeated here.

It should also be noted that for the hydrogen management system, reference can also be made to the prior art, and this application will not repeat them one by one.

The features recorded in the various embodiments in this specification can be replaced or combined with each other, and the same and similar parts of the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, please refer to the part of the description of the method embodiment. The systems and system embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is It can be located in one place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without creative effort.

Professionals can further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the possible For interchangeability, in the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It should also be noted that in this article, relational terms such as first and second etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations Any such actual relationship or order exists between. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Claims (9)

1. A hydrogen cylinder valve state detection method for a hydrogen management system, characterized in that it is applied to a controller in the hydrogen management system, and the method comprises: Determine the effective hydrogen storage volume of the hydrogen management system; wherein, the effective hydrogen storage volume is the total effective volume that each hydrogen cylinder in the hydrogen management system can actually store hydrogen; Judging whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage fault condition; If the judgment result is yes, it is determined that the hydrogen cylinder valve in the hydrogen management system is faulty; The determining the effective hydrogen storage volume of the hydrogen management system includes: determining the first residual hydrogen remaining in the hydrogen management system before hydrogen filling; The actual hydrogen filling amount, and determine the remaining second hydrogen remaining in the hydrogen management system after hydrogen filling; wherein, the first hydrogen remaining and the second hydrogen remaining are the hydrogen management system The total amount of remaining hydrogen in each of the hydrogen cylinders in the system; An effective hydrogen storage volume of the hydrogen management system is calculated based on the first residual hydrogen volume, the actual hydrogen filling volume, and the second residual hydrogen volume. 2. The hydrogen cylinder valve state detection method of the hydrogen management system according to claim 1, wherein the determination of the effective hydrogen storage volume of the hydrogen management system is replaced by: determining a third amount of hydrogen remaining in the hydrogen management system prior to initiation of the drive cycle; After the end of the driving cycle, the actual hydrogen consumption of the hydrogen management system is obtained, and the fourth residual amount of hydrogen remaining in the hydrogen management system after the end of the driving cycle is determined; wherein, the third remaining amount of hydrogen, the The fourth remaining amount of hydrogen is the total amount of remaining hydrogen in each of the hydrogen bottles in the hydrogen management system; An effective hydrogen storage volume of the hydrogen management system is calculated based on the third residual hydrogen volume, the actual hydrogen consumption, and the fourth residual hydrogen volume. 3. The hydrogen cylinder valve state detection method of the hydrogen management system according to claim 1, characterized in that it is judged whether the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage failure conditions ,include: determining the difference between the total hydrogen storage volume and the effective hydrogen storage volume; judging whether the ratio between the difference and the volume of a single hydrogen cylinder in the hydrogen management system is greater than a preset fault threshold; If the judgment result is yes, it is judged that the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system meet the preset hydrogen storage fault condition; If the determination result is negative, it is determined that the total hydrogen storage volume and the effective hydrogen storage volume of the hydrogen management system do not meet the preset hydrogen storage fault condition. 4. The method for detecting the state of the hydrogen cylinder valve of the hydrogen management system according to any one of claims 1-3, wherein when judging whether the total hydrogen storage volume of the hydrogen management system and the effective hydrogen storage volume meet the requirements After preset hydrogen storage failure conditions, if the judgment result is no, it also includes: It is determined that there is no fault in the hydrogen cylinder valve in the hydrogen management system. 5. The method for detecting the state of the hydrogen cylinder valve of the hydrogen management system according to any one of claims 1-3, characterized in that, after determining that the cylinder valve of the hydrogen cylinder in the hydrogen management system is faulty, further include: A fault alarm is generated; wherein, the fault alarm is used to prompt maintenance of the hydrogen cylinder valve. 6. A hydrogen management system, characterized in that it includes: a hydrogenation module, a hydrogen supply module, a controller and a hydrogen cylinder group; Wherein, the hydrogen cylinder group includes N hydrogen cylinders; N is a positive integer; Each of the hydrogen cylinders is provided with a corresponding hydrogen cylinder valve and a temperature sensor; Each of the hydrogen cylinders is connected in parallel and shares the same pressure sensor; The controller is respectively connected with the temperature sensor and the pressure sensor, and is used to realize the hydrogen cylinder valve state detection method of the hydrogen management system according to any one of claims 1-5. 7. The hydrogen management system according to claim 6, wherein N is 4. 8. The hydrogen management system according to claim 6, wherein N is 8. 9. The hydrogen management system according to any one of claims 6-8, wherein the hydrogenation module is used to fill each of the hydrogen cylinders with hydrogen through a filling port; The hydrogen supply module is used to depressurize the hydrogen and supply it to hydrogen-using equipment.

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