Hydrogen addition control method, control device, computer storage medium, and hydrogenation apparatus

Abstract

The application relates to the technical field of hydrogenation control, and particularly discloses a hydrogenation control method, a control device, a computer storage medium and hydrogenation equipment. The method comprises the following steps: obtaining an initial average pressure increase rate of a hydrogen storage system and the type of a hydrogen storage bottle of the hydrogen storage system and / or the volume of each hydrogen storage bottle; matching a correction coefficient of the initial average pressure increase rate according to the type of the hydrogen storage bottle and / or the volume of each hydrogen storage bottle; correcting the initial average pressure increase rate according to the correction coefficient, and performing hydrogenation control based on the corrected initial average pressure increase rate. Therefore, the method corrects the initial average pressure increase rate according to the type of the hydrogen storage bottle and / or the volume of each hydrogen storage bottle, and hydrogenation operation is performed at a more optimal hydrogenation speed under the premise of ensuring hydrogenation safety.

Description

Technical Field

[0001] This application relates to the field of hydrogen refueling control technology, and in particular to a hydrogen refueling control method, a computer-readable storage medium, a hydrogen refueling control device, and a hydrogen refueling equipment. Background Technology

[0002] With the increasing prominence of the global greenhouse effect and the international community's development and utilization of hydrogen energy, more and more hydrogen fuel cell vehicles are entering the market. These vehicles store hydrogen fuel through a hydrogen storage system and refuel at hydrogen refueling stations.

[0003] In related technologies, hydrogen refueling stations obtain the average pressure rise rate based on a preset table in the hydrogen refueling agreement and set refueling parameters according to the average pressure rise rate to refuel the hydrogen storage system. However, this technical solution has poor flexibility in hydrogen refueling control, reducing the practicality of the method. Summary of the Invention

[0004] This application aims to at least partially address one of the technical problems in the related art. To this end, the first objective of this application is to propose a hydrogenation control method that corrects the initial average pressure rise rate based on the type of hydrogen storage tank and / or the volume of each tank, thereby enabling hydrogenation operations to be performed at a more optimized rate while ensuring hydrogenation safety.

[0005] The second objective of this application is to provide a computer-readable storage medium.

[0006] The third objective of this application is to provide a hydrogenation control device.

[0007] The fourth objective of this application is to provide a hydrogen refueling device.

[0008] To achieve the above objectives, a first aspect of this application proposes a hydrogen refueling control method, comprising: obtaining the initial average pressure rise rate of a hydrogen storage system, and the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder; matching a correction coefficient for the initial average pressure rise rate according to the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder; correcting the initial average pressure rise rate according to the correction coefficient; and performing hydrogen refueling control based on the corrected initial average pressure rise rate.

[0009] According to the hydrogen refueling control method of this application, the initial average pressure rise rate of the hydrogen storage system is obtained, and the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder are obtained. A correction coefficient for the initial average pressure rise rate is matched based on the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder. Then, the initial average pressure rise rate is corrected based on the correction coefficient, and hydrogen refueling control is performed based on the corrected initial average pressure rise rate. Therefore, this method corrects the initial average pressure rise rate based on the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder, and performs hydrogen refueling operations at a more optimal rate while ensuring hydrogen refueling safety.

[0010] In addition, the hydrogenation control method according to the above embodiments of this application may also have the following additional technical features: According to one embodiment of this application, the hydrogenation control method further includes: when the initial average pressure rise rate does not meet the preset conditions, matching a correction coefficient for the initial average pressure rise rate according to the type of hydrogen storage cylinder in the hydrogen storage system and / or the volume of each hydrogen storage cylinder.

[0011] According to one embodiment of this application, obtaining the hydrogen storage cylinder type of a hydrogen storage system includes: performing a pre-hydrogenation operation of a target volume to any hydrogen storage cylinder in the hydrogen storage system, and obtaining the temperature drop of the corresponding hydrogen storage tank within a preset time after the pre-hydrogenation operation is completed; determining the hydrogen storage cylinder type based on the temperature drop and a first preset relationship, wherein the first preset relationship is used to characterize the mapping relationship between the temperature drop and the hydrogen storage cylinder type.

[0012] According to one embodiment of this application, obtaining the volume of each hydrogen storage cylinder in a hydrogen storage system includes: performing a pre-hydrogenation operation of a target volume to each hydrogen storage cylinder, and obtaining the pressure drop of the corresponding hydrogen storage cylinder within a preset time after each pre-hydrogenation operation; determining the volume of each hydrogen storage cylinder based on the pressure drop and a second preset relationship, wherein the second preset relationship is used to characterize the mapping relationship between the pressure drop and the volume.

[0013] According to one embodiment of this application, the hydrogen storage system further includes at least one temperature sensor, which corresponds one-to-one with a hydrogen storage cylinder. The temperature sensor is used to acquire the temperature of the corresponding hydrogen storage cylinder and generate a temperature signal. Before performing a pre-hydrogenation operation of a target volume to each hydrogen storage cylinder, the hydrogen addition control method further includes: receiving the temperature signal generated by the at least one temperature sensor; determining the number of hydrogen storage cylinders in the hydrogen storage system based on the number of temperature signals; and determining the number of pre-hydrogenation operations based on the number of hydrogen storage cylinders, so as to perform a pre-hydrogenation operation of a target volume to each hydrogen storage cylinder based on the number of pre-hydrogenation operations.

[0014] According to one embodiment of this application, the correction coefficient for matching the initial average pressure rise rate based on the hydrogen storage cylinder type includes: determining a first correction coefficient based on the hydrogen storage cylinder type and a third preset relationship, and using the first correction coefficient as the correction coefficient for the initial average pressure rise rate, wherein the third preset relationship is used to characterize the mapping relationship between the hydrogen storage cylinder type and the first correction coefficient.

[0015] According to one embodiment of this application, the correction coefficient for matching the initial average pressure rise rate with the volume of each hydrogen storage cylinder includes: obtaining the maximum volume value in the volume of each hydrogen storage cylinder; determining a second correction coefficient based on the maximum volume value and a fourth preset relationship, so as to use the second correction coefficient as the correction coefficient for the initial average pressure rise rate, wherein the fourth preset relationship is used to characterize the mapping relationship between the maximum volume value and the second correction coefficient.

[0016] According to one embodiment of this application, a correction coefficient for matching the initial average pressure rise rate based on the hydrogen storage cylinder type and the volume of each hydrogen storage cylinder includes: determining a first correction coefficient based on the hydrogen storage cylinder type and a third preset relationship, wherein the third preset relationship is used to characterize the mapping relationship between the hydrogen storage cylinder type and the first correction coefficient; obtaining the maximum volume value in the volume of each hydrogen storage cylinder, and determining a second correction coefficient based on the maximum volume value and a fourth preset relationship, wherein the fourth preset relationship is used to characterize the mapping relationship between the maximum volume value and the second correction coefficient; and obtaining the product of the first correction coefficient and the second correction coefficient to obtain the correction coefficient for the initial average pressure rise rate.

[0017] To achieve the above objectives, a second aspect of this application provides a computer-readable storage medium storing a hydrogenation control program thereon, which, when executed by a processor, implements the hydrogenation control method described above.

[0018] When a processor executes a computer-readable storage medium storing a hydrogenation control program thereon according to an embodiment of this application, the above-described hydrogenation control method is implemented. Based on the above-described hydrogenation control method, a more efficient hydrogenation rate is used for hydrogenation operation while ensuring hydrogenation safety.

[0019] To achieve the above objectives, a third aspect of this application provides a hydrogen refueling control device, comprising: a first acquisition module for acquiring the initial average pressure rise rate of a hydrogen storage system; a second acquisition module for acquiring the type of hydrogen storage cylinders and / or the volume of each hydrogen storage cylinder; a matching module for matching a correction coefficient of the initial average pressure rise rate according to the type of hydrogen storage cylinders and / or the volume of each hydrogen storage cylinder; and a control module for correcting the initial average pressure rise rate according to the correction coefficient and performing hydrogen refueling control based on the corrected initial average pressure rise rate.

[0020] According to the hydrogen refueling control device of this application embodiment, a first acquisition module acquires the initial average pressure rise rate of the hydrogen storage system, a second acquisition module acquires the type of hydrogen storage cylinders and / or the volume of each hydrogen storage cylinder, a matching module matches a correction coefficient for the initial average pressure rise rate based on the type of hydrogen storage cylinders and / or the volume of each hydrogen storage cylinder, a control module corrects the initial average pressure rise rate based on the correction coefficient, and performs hydrogen refueling control based on the corrected initial average pressure rise rate. Thus, this device corrects the initial average pressure rise rate based on the type of hydrogen storage cylinders and / or the volume of each hydrogen storage cylinder, employing a more optimized hydrogen refueling rate while ensuring hydrogen refueling safety.

[0021] To achieve the above objectives, a fourth aspect of this application provides a hydrogen refueling device, including a memory, a processor, and a hydrogen refueling control program stored in the memory and executable on the processor. When the processor executes the hydrogen refueling control program, it implements the aforementioned hydrogen refueling control method.

[0022] The hydrogen refueling device of this application embodiment implements the above-mentioned hydrogen refueling control method when the processor executes the hydrogen refueling control program. Based on the above-mentioned hydrogen refueling control method, a better hydrogen refueling speed is used for hydrogen refueling operation while ensuring hydrogen refueling safety.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] Figure 1 This is a flowchart of a hydrogenation control method according to an embodiment of this application; Figure 2 This is a schematic diagram of the architecture of a hydrogen storage system according to a specific embodiment of this application; Figure 3 This is a schematic diagram of the filling process for Type IV and Type III bottles according to one embodiment of this application; Figure 4 This is a schematic diagram illustrating the filling process of a single 120L gas cylinder group and a multi-cylinder group of two 60L gas cylinders according to one embodiment of this application. Figure 5 This is a flowchart of a hydrogenation control method according to a specific embodiment of this application; Figure 6 This is a schematic diagram of the filling curve according to a specific embodiment of this application; Figure 7 This is a connection diagram of the hydrogenation control device according to an embodiment of this application; Figure 8 This is a block diagram of a hydrogenation apparatus according to an embodiment of this application. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0026] The hydrogenation control method, computer-readable storage medium, hydrogenation control device, and hydrogenation equipment proposed in this application are described below with reference to the accompanying drawings.

[0027] In related technologies, hydrogen refueling protocols stipulate that during the initial refueling phase, a pulse signal is first sent to estimate the total volume of the downstream hydrogen storage system based on the downstream pressure drop. Subsequently, the average pressure rise rate during the refueling process is obtained by looking up a table based on the hydrogen storage system volume, fuel pre-cooling temperature, ambient temperature, and the initial pressure of the hydrogen storage system, thus completing the refueling parameter settings. The average pressure rise rate determines the speed of the entire refueling process. In this technical solution, the total volume of the on-board hydrogen storage system is estimated through the pulse signal and its pressure drop, and the average pressure rise rate determined by looking up a table according to the hydrogen refueling protocol is a parameter setting based on a preset single-cylinder group system. However, in actual vehicles, due to space constraints, a multi-cylinder group parallel structure is usually adopted; for example, passenger cars use 2-4 cylinders, and commercial vehicles use 4-8 cylinders. Multi-cylinder groups have better heat dissipation conditions than single-cylinder groups, making it less likely to trigger over-temperature, over-pressure, and overcharge boundaries. Using single-cylinder group conditions to set the average pressure rise rate has redundancy, which is not conducive to improving the refueling speed. In addition, the types of hydrogen storage cylinders are diverse, and the average pressure rise rate in the hydrogen refueling protocol also limits the improvement of refueling speed and matching degree.

[0028] To address at least one of the aforementioned technical problems, this application proposes a hydrogen addition control method. This method first obtains the initial average pressure rise rate of the hydrogen storage system, as well as the type of hydrogen storage cylinders and / or the volume of each cylinder. Then, it matches a correction coefficient for the initial average pressure rise rate based on the cylinder type and / or volume, corrects the initial average pressure rise rate according to the correction coefficient, and uses the corrected initial average pressure rise rate to determine the hydrogen addition parameters for hydrogen addition control. Thus, this method corrects the initial average pressure rise rate based on the cylinder type and / or volume, ensuring that it matches the hydrogen storage parameters of the system while guaranteeing hydrogen addition safety, allowing for a more optimized hydrogen addition rate.

[0029] This hydrogen refueling control method can be applied to hydrogen refueling machines in hydrogen refueling stations. The hydrogen storage system can be a hydrogen storage system in a vehicle. When the refueling machine's nozzle is connected to the vehicle's hydrogen refueling port, this control method is triggered to refuel the vehicle using the vehicle's hydrogen storage system. The hydrogen refueling control method of this application will be described in detail below with reference to the accompanying drawings.

[0030] Figure 1 This is a flowchart of a hydrogenation control method according to an embodiment of this application.

[0031] like Figure 1 As shown, the hydrogenation control method of this application embodiment includes: S1, obtain the initial average pressure rise rate of hydrogen addition to the hydrogen storage system, as well as the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder. S2, a correction factor for the initial average pressure rise rate is matched according to the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder; S3, corrects the initial average pressure rise rate according to the correction factor, and performs hydrogenation control based on the corrected initial average pressure rise rate.

[0032] Specifically, when the hydrogen storage system includes a hydrogen storage cylinder, a correction coefficient for the initial average pressure rise rate can be determined based on the cylinder type. This correction coefficient is then used to adjust the initial average pressure rise rate, which is applied to refueling control to achieve a more optimal refueling speed. Hydrogen storage cylinders are classified according to the materials used in their internal structure, including Type I (all-metal cylinder), Type II (metal-lined, circumferentially wound cylinder), Type III (metal-lined, fully wound cylinder), and Type IV (plastic-lined, fully wound cylinder). Figure 3 As shown, the blue line represents Type IV cylinders (plastic liner), and the yellow line represents Type III cylinders (metal liner). When filling both Type IV and Type III cylinders using the same average pressure rise rate, the highest and real-time temperatures of Type III cylinders are significantly lower than those of Type IV cylinders. Therefore, Type III cylinders can utilize a higher average pressure rise rate to increase refueling speed. Furthermore, currently, only Type III and Type IV hydrogen storage cylinders are used in the field of onboard hydrogen storage. When controlling the hydrogen refueling of a vehicle's hydrogen storage system, only these two cylinder types need to be identified and judged.

[0033] In the case where the hydrogen storage system includes multiple hydrogen storage cylinders, such as Figure 2 As shown, the correction factor for the initial average pressure rise rate can be determined solely based on the type of hydrogen storage cylinder, or solely based on the volume of each hydrogen storage cylinder, or a correction factor for the initial average pressure rise rate can be matched by both the type of hydrogen storage cylinder and the volume of each hydrogen storage cylinder. The initial average pressure rise rate can then be corrected based on this correction factor, and this method can be applied to refueling control. Figure 4As shown, the blue line represents a single 120L gas cylinder group, and the yellow line represents a multi-cylinder group consisting of two 60L gas cylinders. When refueling with the same average pressure rise rate, the maximum temperature and real-time temperature of the multi-cylinder group are significantly lower than those of the single-cylinder group. Therefore, the multi-cylinder group can use a larger average pressure rise rate to improve the refueling speed.

[0034] Before refueling the hydrogen storage system, this embodiment first obtains the initial average pressure rise rate of the hydrogen storage system. The initial average pressure rise rate can be obtained by looking up a table based on the total volume of the hydrogen storage system, the fuel pre-cooling temperature, the ambient temperature, and the initial pressure of the hydrogen storage system. The total volume of the hydrogen storage system can be obtained through testing, or it can be obtained by adding the volumes of each hydrogen storage cylinder after obtaining the volume of each cylinder; there is no specific limitation.

[0035] At the same time, the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder of the hydrogen storage system are obtained based on the target correction requirements. For example, this can be obtained based on the information exchange between the hydrogen refueling station and the vehicle, or through detection.

[0036] When using the type of hydrogen storage cylinder to correct the initial average pressure rise rate for hydrogen refueling control, the correction coefficient for the corresponding initial average pressure rise rate is obtained by looking up a table based on the acquired hydrogen storage cylinder type or by calculating based on a preset function. When using the volume of each hydrogen storage cylinder to correct the initial average pressure rise rate for hydrogen refueling control, the correction coefficient k1 for the corresponding initial average pressure rise rate is obtained by looking up a table based on the acquired hydrogen storage cylinder type or by calculating based on a preset function. When using the volume of each hydrogen storage cylinder to correct the initial average pressure rise rate k2 for hydrogen refueling control, the correction coefficient k3 for the corresponding initial average pressure rise rate can be obtained by looking up a table based on the acquired hydrogen storage cylinder type and the volume of each hydrogen storage cylinder or by calculating based on a preset function. It can be understood that the correction coefficient k3 can be directly determined based on the hydrogen storage cylinder type and the volume of each hydrogen storage cylinder, or it can be calculated based on the correction coefficient k1 determined by the hydrogen storage cylinder type k3 and the correction coefficient k2 determined by the volume of each hydrogen storage cylinder.

[0037] Then, the product of the correction factor and the initial average pressure rise rate is calculated to obtain the corrected initial average pressure rise rate. The refueling parameters are then set based on this corrected initial average pressure rise rate for controlling the hydrogen storage system's refueling. For example, in an embodiment where the initial average pressure rise rate (APRR) is corrected based on the hydrogen storage cylinder type, the corrected initial average pressure rise rate (APRR') = APRR'. k1; In the embodiment where the initial average pressure rise rate (APRR) is corrected based on the volume of each hydrogen storage cylinder, the corrected initial average pressure rise rate (APRR') = APRR k2; In the embodiment where the initial mean pressure rise rate (APRR) is corrected based on the type of hydrogen storage tank and the volume of each hydrogen storage tank, the corrected initial mean pressure rise rate (APRR') = APRR k1 k2 ensures betting safety when the betting speed is sufficient or when external conditions are adverse.

[0038] This embodiment can correct the initial average pressure rise rate based on the type of hydrogen storage cylinders in the hydrogen storage system and / or the volume of each hydrogen storage cylinder, in order to determine the average pressure rise rate matched to the energy storage system and adopt a better refueling speed for refueling control. This allows for a faster refueling speed while ensuring hydrogen refueling safety.

[0039] In one embodiment of this application, the hydrogenation control method further includes: when the initial average pressure rise rate does not meet the preset conditions, matching a correction coefficient for the initial average pressure rise rate according to the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder.

[0040] Specifically, preset conditions can be set according to actual conditions, such as determining the preset average pressure rise rate range or preset limit based on vehicle type. Assuming the preset condition is that the initial average pressure rise rate is within the preset average pressure rise rate range, then if the initial average pressure rise rate does not meet the preset condition—for example, if the determined initial average pressure rise rate is less than the preset average pressure rise rate range—it is considered that the initial average pressure rise rate is too low and cannot achieve the optimal refueling speed. In this case, the initial average pressure rise rate is adjusted upwards based on the hydrogen storage tank type and / or the volume of each hydrogen storage tank. If the initial average pressure rise rate is greater than the preset pressure rise rate range, it is considered that the initial average pressure rise rate is too high, which may lead to overheating or abnormal vehicle conditions. In this case, the initial average pressure rise rate is adjusted downwards based on the hydrogen storage tank type and / or the volume of each hydrogen storage tank. When the initial average pressure rise rate meets the preset condition, i.e., when the initial average pressure rise rate is within the preset pressure rise rate range, it is considered that the initial average pressure rise rate is close to or equal to the optimal average pressure rise rate. In this case, hydrogen refueling control is directly performed using this initial average pressure rise rate, reducing the calculation process.

[0041] In one embodiment of this application, obtaining the hydrogen storage cylinder type of a hydrogen storage system includes: performing a pre-hydrogenation operation of a target volume to any hydrogen storage cylinder in the hydrogen storage system, and obtaining the temperature drop of the corresponding hydrogen storage cylinder within a preset time after the pre-hydrogenation operation is completed; determining the hydrogen storage cylinder type based on the temperature drop and a first preset relationship, wherein the first preset relationship is used to characterize the mapping relationship between the temperature drop and the hydrogen storage cylinder type.

[0042] Specifically, each hydrogen storage system contains hydrogen storage tanks of the same type, allowing for the evaluation of the type of hydrogen storage tank by selecting one of the tanks. Since different materials have different thermal resistances—for example, plastic bottles have high thermal resistance, resulting in a slow temperature drop when hydrogen is introduced; while aluminum bottles have a rapid temperature drop—this embodiment uses temperature drop to determine the type of hydrogen storage tank.

[0043] by Figure 2 Taking the hydrogen storage system shown as an example, the system includes hydrogen storage cylinder 1 and hydrogen storage cylinder 2. Each hydrogen storage cylinder is equipped with a corresponding shut-off valve connected to the system pipeline. When the shut-off valve is closed, the connection between the corresponding hydrogen storage cylinder and the system pipeline is cut off; when the shut-off valve is open, the connection between the corresponding hydrogen storage cylinder and the system pipeline is opened. First, the shut-off valve of hydrogen storage cylinder 1 is opened, and the shut-off valve of hydrogen storage cylinder 2 is closed. The hydrogen dispenser adds the target volume of hydrogen gas into hydrogen storage cylinder 1 through the system pipeline, which is a pre-hydrogenation operation for hydrogen storage cylinder 1. Then, the temperature of hydrogen storage cylinder 1 is monitored, and the temperature drop of hydrogen storage cylinder 1 within a preset time is calculated. Assuming that the first preset relationship is a mapping table of hydrogen storage tank type and temperature drop range, the corresponding hydrogen storage tank type can be obtained by looking up the table based on the obtained temperature drop of hydrogen storage cylinder 1.

[0044] In one embodiment of this application, obtaining the volume of each hydrogen storage cylinder in the hydrogen storage system includes: performing a pre-hydrogenation operation of a target volume to each hydrogen storage cylinder, and obtaining the pressure drop of the corresponding hydrogen storage cylinder within a preset time after each pre-hydrogenation operation; determining the volume of each hydrogen storage cylinder based on the pressure drop and a second preset relationship, wherein the second preset relationship is used to characterize the mapping relationship between the pressure drop and the volume.

[0045] Specifically, the volume of each hydrogen storage cylinder is related to the pressure drop within a preset time period obtained from the test, which can be obtained based on empirical formulas or by looking up tables. The second preset relationship can be a mapping table or calculation formula between pressure drop and volume, and there are no specific restrictions.

[0046] Continue with Figure 2For example, assuming the second preset relationship is a mapping table between pressure drop and volume, hydrogen storage cylinder 1 and hydrogen storage cylinder 2 are respectively equipped with shut-off valves connected to the system pipeline. When the shut-off valve is in the closed state, the connection between the corresponding hydrogen storage cylinder and the system pipeline is cut off; when the shut-off valve is in the open state, the connection between the corresponding hydrogen storage cylinder and the system pipeline is opened. First, control the shut-off valve of hydrogen storage cylinder 1 to open and control the shut-off valve of hydrogen storage cylinder 2 to close, and add the target volume of hydrogen gas into hydrogen storage cylinder 1 at a large flow rate, i.e., perform a pre-hydrogenation operation on hydrogen storage cylinder 1. Monitor the pressure of hydrogen storage cylinder 1 and obtain the pressure drop of hydrogen storage cylinder 1 within a preset time after the hydrogen addition is completed. Based on the pressure drop of hydrogen storage cylinder 1, the volume of hydrogen storage cylinder 1 is obtained by looking up a table. Then, the shut-off valve of hydrogen storage cylinder 1 is closed and the shut-off valve of hydrogen storage cylinder 2 is opened. Hydrogen gas of the target volume is added to hydrogen storage cylinder 2 at a large flow rate, which is to perform a pre-hydrogenation operation on hydrogen storage cylinder 2. The pressure of hydrogen storage cylinder 2 is monitored, and the pressure drop of hydrogen storage cylinder 2 within a preset time after the hydrogen addition is completed is obtained. The volume of hydrogen storage cylinder 2 is obtained by looking up a table based on the pressure drop of hydrogen storage cylinder 2.

[0047] The above embodiment achieves the pre-filling operation of a designated hydrogen storage cylinder by controlling the opening / closing of the shut-off valve of each hydrogen storage cylinder to obtain the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder, so as to correct the initial average pressure rise rate. Then, the formal hydrogen filling operation of the hydrogen storage system is performed with the corrected initial average pressure rise rate. During the formal hydrogen filling process, the shut-off valves of all gas cylinders need to be opened to ensure that all gas cylinders in the hydrogen storage system are filled.

[0048] Furthermore, with two-way communication between the hydrogen refueling station and the vehicle, after confirming the volume and / or type of each hydrogen storage cylinder, it can be compared with the volume and / or type of each hydrogen storage cylinder obtained through communication. If there is a large discrepancy between the two data, such as the discrepancy between the volumes of each hydrogen storage cylinder being greater than the preset volume or the hydrogen storage cylinder types being different, then it may be that the hydrogen refueling station has a detection fault, or the data parameters in the vehicle have not been updated in time. In this case, the refueling process should be suspended and further confirmation should be waited for.

[0049] In one embodiment of this application, the hydrogen storage system further includes at least one temperature sensor, which corresponds one-to-one with a hydrogen storage cylinder. The temperature sensor is used to acquire the temperature of the corresponding hydrogen storage cylinder and generate a temperature signal. Before performing a pre-hydrogenation operation of a target volume to each hydrogen storage cylinder, the hydrogen addition control method further includes: receiving the temperature signal generated by at least one temperature sensor; determining the number of hydrogen storage cylinders in the hydrogen storage system based on the number of temperature signals; and determining the number of pre-hydrogenation operations based on the number of hydrogen storage cylinders, so as to perform a pre-hydrogenation operation of a target volume to each hydrogen storage cylinder based on the number of pre-hydrogenation operations.

[0050] Specifically, to ensure application safety, each hydrogen storage cylinder in the hydrogen storage system is equipped with a temperature sensor in its valve. Therefore, this embodiment determines the number of hydrogen storage cylinders based on the existing structure of the hydrogen storage system.

[0051] The number of temperature signals refers to the number of temperature signal sources. The number of acquired temperature signals corresponds to the number of hydrogen storage cylinders in the hydrogen storage system. The execution of the pre-hydrogenation operation is then controlled based on the number of storage cylinders to ensure accurate volume assessment of each cylinder and avoid waste during pre-hydrogenation. Figure 2 For example, the temperature sensor in the valve of hydrogen storage cylinder 1 feeds back temperature signal 1, and the temperature sensor in the valve of hydrogen storage cylinder 2 feeds back temperature signal 2. When temperature signal 1 and temperature signal 2 from two different IDs are received, it is determined that the number of temperature signals of the hydrogen storage system is 2, and two pre-hydrogenation operations need to be performed to perform volume detection on hydrogen storage cylinder 1 and hydrogen storage cylinder 2 respectively based on the measurement pre-hydrogenation operation.

[0052] In one embodiment of this application, matching the correction coefficient for the initial average pressure rise rate according to the hydrogen storage cylinder type includes: determining a first correction coefficient based on the hydrogen storage cylinder type and a third preset relationship, so as to use the first correction coefficient as the correction coefficient for the initial average pressure rise rate, wherein the third preset relationship is used to characterize the mapping relationship between the hydrogen storage cylinder type and the first correction coefficient.

[0053] Specifically, the third preset relationship can be obtained by experimentally determining the average pressure rise rate corresponding to the upper limit of the preset temperature for the hydrogen storage cylinder type, fitting the ratio between this rate and the initial average pressure rise rate to obtain the corresponding fitting function formula, or directly presenting it in tabular form.

[0054] In the embodiment where the initial average pressure rise rate is corrected solely based on the hydrogen storage tank type, a first correction coefficient k1 is obtained based on the hydrogen storage tank type and a third preset relationship, and the corrected initial average pressure rise rate = initial average pressure rise rate. k1.

[0055] In one embodiment of this application, the correction coefficient for matching the initial average pressure rise rate based on the volume of each hydrogen storage cylinder includes: obtaining the maximum volume value in the volume of each hydrogen storage cylinder; determining a second correction coefficient based on the maximum volume value and a fourth preset relationship, so as to use the second correction coefficient as the correction coefficient for the initial average pressure rise rate, wherein the fourth preset relationship is used to characterize the mapping relationship between the maximum volume value and the second correction coefficient.

[0056] Specifically, the fourth preset relationship can be obtained by experimentally determining the average pressure rise rate corresponding to the volume reaching the preset upper temperature limit, fitting the ratio between this and the initial average pressure rise rate to obtain the corresponding fitting function formula, or directly presenting it in tabular form.

[0057] In the embodiment where the initial average pressure rise rate is corrected solely based on the volume of each hydrogen storage cylinder, the maximum volume of each hydrogen storage cylinder is used as a benchmark, and a second correction coefficient k2 is obtained by combining it with a fourth preset relationship. The corrected initial average pressure rise rate = initial average pressure rise rate k2.

[0058] In one embodiment of this application, matching the correction coefficient for the initial average pressure rise rate according to the hydrogen storage cylinder type and the volume of each hydrogen storage cylinder includes: determining a first correction coefficient based on the hydrogen storage cylinder type and a third preset relationship, wherein the third preset relationship is used to characterize the mapping relationship between the hydrogen storage cylinder type and the first correction coefficient; obtaining the maximum volume value in the volume of each hydrogen storage cylinder, and determining a second correction coefficient based on the maximum volume value and a fourth preset relationship, wherein the fourth preset relationship is used to characterize the mapping relationship between the maximum volume value and the second correction coefficient; and obtaining the product of the first correction coefficient and the second correction coefficient to obtain the correction coefficient for the initial average pressure rise rate.

[0059] In other words, in the embodiment where the initial average pressure rise rate is corrected based on the type of hydrogen storage cylinder and the volume of each hydrogen storage cylinder, a first correction coefficient k1 is obtained based on the type of hydrogen storage cylinder and a third preset relationship, and a second correction coefficient k2 is obtained based on the maximum volume of each hydrogen storage cylinder and a fourth preset relationship. The corrected initial average pressure rise rate = initial average pressure rise rate k1 k2.

[0060] As a specific embodiment of this application, the hydrogen storage system is as follows: Figure 2 As shown, the hydrogen refueling control method executed by the hydrogen refueling machine is as follows: Figure 5 As shown, it includes the following steps: S101, acquire the temperature signal from the temperature sensor of the hydrogen storage system.

[0061] S102, based on the number of temperature signals, it is determined that the hydrogen storage system includes two hydrogen storage cylinders.

[0062] S103, determine the number of times the pre-hydrogenation operation needs to be performed based on the number of hydrogen storage cylinders.

[0063] S104: After the first pre-hydrogenation operation is completed, obtain the pressure drop and temperature drop of the corresponding hydrogen storage tank within a preset time.

[0064] S105, determine the volume of a hydrogen storage cylinder based on the pressure drop and the second preset relationship, and determine the type of hydrogen storage cylinder based on the temperature drop and the first preset relationship.

[0065] S106, after the second pre-hydrogenation operation is completed, obtain the pressure drop of the corresponding hydrogen storage tank within a preset time.

[0066] S107, determine the volume of another hydrogen storage cylinder based on the pressure drop and the second preset relationship.

[0067] S108, calculate the sum of the volumes of the two hydrogen storage cylinders to obtain the total volume of the hydrogen storage system.

[0068] S109, based on the total volume of the hydrogen storage system, and combined with the fuel precooling temperature, ambient temperature and the initial pressure of the hydrogen storage system, the initial average pressure rise rate (APRR) is obtained by looking up a table.

[0069] S110, determine the first correction coefficient k1 based on the hydrogen storage bottle type and the third preset relationship.

[0070] S111, determine the second correction coefficient k2 based on the maximum volume of the two hydrogen storage cylinders and the fourth preset relationship.

[0071] S112, Calculate APRR'=APRR k1 k2.

[0072] S113, set the hydrogenation parameters according to APRR' to perform the hydrogenation operation.

[0073] like Figure 6 As shown, the black line represents the filling curve of the filling protocol in the related technology. After executing one pulse signal, it enters the initial airtightness check stage, and then fills the pressure according to the APRR slope obtained from the table until the target pressure is reached. The red line represents the filling curve of this embodiment. After executing n pulse signals, it enters the initial airtightness check stage, and then fills the pressure according to the corrected APRR' slope until the target pressure is reached.

[0074] This technical solution can improve the refueling speed, while also adding correction processes for hydrogen storage tank type, volume detection, and average pressure rise rate, thus improving the safety of hydrogen refueling. In addition, the control method is simple, versatile, and easy to promote and apply on a large scale.

[0075] In summary, the hydrogen refueling control method according to the embodiments of this application, after determining the initial average pressure rise rate for refueling the hydrogen storage system, obtains the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder, matches a correction coefficient for the initial average pressure rise rate based on the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder, corrects the initial average pressure rise rate based on the correction coefficient, and performs hydrogen refueling control based on the corrected initial average pressure rise rate. Therefore, this method corrects the initial average pressure rise rate based on the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder, and employs a more optimized refueling speed while ensuring hydrogen refueling safety.

[0076] Corresponding to the above embodiments, this application also proposes a computer-readable storage medium.

[0077] The computer-readable storage medium of this application embodiment stores a hydrogenation control program thereon, which, when executed by a processor, implements the hydrogenation control method described above.

[0078] When a processor executes a computer-readable storage medium storing a hydrogen refueling control program thereon according to an embodiment of this application, the above-described hydrogen refueling control method is implemented. Based on the above-described hydrogen refueling control method, a better refueling speed is used for the refueling operation while ensuring hydrogen refueling safety.

[0079] Corresponding to the above embodiments, this application also proposes a hydrogenation control device.

[0080] like Figure 7 As shown, the hydrogenation control device in this application embodiment includes: a first acquisition module 10, a second acquisition module 20, a matching module 30, and a control module 40.

[0081] The system comprises the following modules: a first acquisition module 10 for acquiring the initial average pressure rise rate of the hydrogen storage system; a second acquisition module 20 for acquiring the type of hydrogen storage cylinders and / or the volume of each cylinder; a matching module 30 for matching a correction coefficient to the initial average pressure rise rate based on the cylinder type and / or the volume of each cylinder; and a control module 40 for correcting the initial average pressure rise rate based on the correction coefficient and performing hydrogen refueling control based on the corrected initial average pressure rise rate.

[0082] According to one embodiment of this application, the second acquisition module 20 is further configured to match a correction coefficient of the initial average pressure rise rate according to the type of hydrogen storage cylinder in the hydrogen storage system and / or the volume of each hydrogen storage cylinder in at least one hydrogen storage cylinder when the initial average pressure rise rate does not meet the preset conditions.

[0083] According to one embodiment of this application, the second acquisition module 20 acquires the hydrogen storage cylinder type of the hydrogen storage system, and is used to: perform a pre-hydrogenation operation of a target volume to any hydrogen storage cylinder in the hydrogen storage system, and acquire the temperature drop of the corresponding hydrogen storage tank within a preset time after the pre-hydrogenation operation is completed; determine the hydrogen storage cylinder type according to the temperature drop and a first preset relationship, wherein the first preset relationship is used to characterize the mapping relationship between the temperature drop and the hydrogen storage cylinder type.

[0084] According to one embodiment of this application, the second acquisition module 20 acquires the volume of each hydrogen storage cylinder in the hydrogen storage system, and is used to: perform a pre-hydrogenation operation of a target volume to each hydrogen storage cylinder, and acquire the pressure drop of the corresponding hydrogen storage tank within a preset time after each pre-hydrogenation operation; determine the volume of each hydrogen storage cylinder according to the pressure drop and a second preset relationship, wherein the second preset relationship is used to characterize the mapping relationship between the pressure drop and the volume.

[0085] According to one embodiment of this application, the hydrogen storage system further includes at least one temperature sensor, which corresponds one-to-one with a hydrogen storage cylinder. The temperature sensor is used to acquire the temperature of the corresponding hydrogen storage cylinder and generate a temperature signal. Before performing a pre-hydrogenation operation of the target volume to each hydrogen storage cylinder, the second acquisition module 20 is further configured to: receive the temperature signal generated by the at least one temperature sensor; determine the number of hydrogen storage cylinders in the hydrogen storage system based on the number of temperature signals; and determine the number of pre-hydrogenation operations based on the number of hydrogen storage cylinders, so as to perform a pre-hydrogenation operation of the target volume to each hydrogen storage cylinder based on the number of pre-hydrogenation operations.

[0086] According to one embodiment of this application, the matching module 30 matches a correction coefficient for the initial average pressure rise rate based on the hydrogen storage cylinder type, and is used to: determine a first correction coefficient based on the hydrogen storage cylinder type and a third preset relationship, so as to use the first correction coefficient as a correction coefficient for the initial average pressure rise rate, wherein the third preset relationship is used to characterize the mapping relationship between the hydrogen storage cylinder type and the first correction coefficient.

[0087] According to one embodiment of this application, the matching module 30 matches a correction coefficient for the initial average pressure rise rate based on the volume of each hydrogen storage cylinder, and is used to: obtain the maximum volume value in the volume of each hydrogen storage cylinder; determine a second correction coefficient based on the maximum volume value and a fourth preset relationship, so as to use the second correction coefficient as the correction coefficient for the initial average pressure rise rate, wherein the fourth preset relationship is used to characterize the mapping relationship between the maximum volume value and the second correction coefficient.

[0088] According to one embodiment of this application, the matching module 30 matches a correction coefficient for the initial average pressure rise rate based on the hydrogen storage cylinder type and the volume of each hydrogen storage cylinder. This is used to: determine a first correction coefficient based on the hydrogen storage cylinder type and a third preset relationship, wherein the third preset relationship characterizes the mapping relationship between the hydrogen storage cylinder type and the first correction coefficient; obtain the maximum volume value in the volume of each hydrogen storage cylinder; determine a second correction coefficient based on the maximum volume value and a fourth preset relationship, wherein the fourth preset relationship characterizes the mapping relationship between the maximum volume value and the second correction coefficient; and obtain the product of the first correction coefficient and the second correction coefficient to obtain the correction coefficient for the initial average pressure rise rate.

[0089] It should be noted that for details not disclosed in the hydrogenation control device of the embodiments of this application, please refer to the details disclosed in the hydrogenation control method of the above embodiments of this application, which will not be repeated here.

[0090] According to the hydrogen refueling control device of this application embodiment, the initial average pressure rise rate of the hydrogen storage system is obtained through a first acquisition module, and the hydrogen storage cylinder type and / or the volume of each hydrogen storage cylinder is obtained through a second acquisition module. A matching module matches a correction coefficient for the initial average pressure rise rate based on the hydrogen storage cylinder type and / or the volume of each hydrogen storage cylinder. A control module corrects the initial average pressure rise rate based on the correction coefficient and performs hydrogen refueling control based on the corrected initial average pressure rise rate. Therefore, this device corrects the initial average pressure rise rate based on the hydrogen storage cylinder type and / or the volume of each hydrogen storage cylinder, and performs the refueling operation at a more optimized refueling speed while ensuring hydrogen refueling safety.

[0091] Corresponding to the above embodiments, this application also proposes a hydrogenation device.

[0092] like Figure 8 As shown in the embodiment of this application, a hydrogen refueling device 100 is proposed, including a memory 110, a processor 120, and a hydrogen refueling control program stored in the memory 110 and executable on the processor 120. When the processor 120 executes the hydrogen refueling control program, it implements the above-mentioned hydrogen refueling control method.

[0093] The hydrogen refueling device of this application embodiment implements the above-mentioned hydrogen refueling control method when the processor executes the hydrogen refueling control program. Based on the above-mentioned hydrogen refueling control method, a better hydrogen refueling speed is used for hydrogen refueling operation while ensuring hydrogen refueling safety.

[0094] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0095] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0096] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0097] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0098] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0099] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for controlling hydrogenation, characterized in that, The method includes: Obtain the initial average pressure rise rate of the hydrogen storage system, as well as the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder; If the initial average pressure rise rate does not meet the preset conditions, a correction coefficient for the initial average pressure rise rate is matched according to the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder. The initial average pressure rise rate is corrected according to the correction factor, and hydrogenation control is performed based on the corrected initial average pressure rise rate.

2. The hydrogenation control method according to claim 1, characterized in that, The method of obtaining the type of hydrogen storage cylinder for the hydrogen storage system includes: Perform a pre-hydrogenation operation of a target volume to any hydrogen storage cylinder in the hydrogen storage system, and obtain the temperature drop of the corresponding hydrogen storage tank within a preset time after the pre-hydrogenation operation is completed, wherein the hydrogen storage cylinders in the hydrogen storage system are of the same type. The hydrogen storage cylinder type is determined based on the temperature drop and a first preset relationship, wherein the first preset relationship is used to characterize the mapping relationship between the temperature drop and the hydrogen storage cylinder type.

3. The hydrogenation control method according to claim 1, characterized in that, Obtaining the volume of each hydrogen storage cylinder in the hydrogen storage system includes: Perform a pre-hydrogenation operation to each hydrogen storage cylinder to the target volume, and obtain the pressure drop of the corresponding hydrogen storage cylinder within a preset time after each pre-hydrogenation operation is completed; The volume of each hydrogen storage cylinder is determined based on the pressure drop and the second preset relationship, wherein the second preset relationship is used to characterize the mapping relationship between the pressure drop and the volume.

4. The hydrogenation control method according to claim 3, characterized in that, The hydrogen storage system further includes at least one temperature sensor, which corresponds one-to-one with each of the hydrogen storage cylinders. The temperature sensor is used to acquire the temperature of the corresponding hydrogen storage cylinder and generate a temperature signal. Before performing a pre-hydrogenation operation to each hydrogen storage cylinder to the target volume, the method further includes: Acquire the temperature signal generated by the at least one temperature sensor; The number of hydrogen storage cylinders in the hydrogen storage system is determined based on the number of temperature signals. The number of pre-hydrogenation operations is determined based on the number of hydrogen storage cylinders, and a target volume of pre-hydrogenation operation is performed on each hydrogen storage cylinder based on the number of pre-hydrogenation operations.

5. The hydrogenation control method according to claim 1, characterized in that, The correction factor for matching the initial average pressure rise rate according to the type of hydrogen storage cylinder includes: A first correction coefficient is determined based on the hydrogen storage cylinder type and a third preset relationship, and the first correction coefficient is used as a correction coefficient for the initial average pressure rise rate, wherein the third preset relationship is used to characterize the mapping relationship between the hydrogen storage cylinder type and the first correction coefficient.

6. The hydrogenation control method according to claim 1, characterized in that, The correction factor for matching the initial average pressure rise rate based on the volume of each hydrogen storage cylinder includes: Obtain the maximum volume of each hydrogen storage cylinder; A second correction coefficient is determined based on the maximum volume and a fourth preset relationship, and the second correction coefficient is used as a correction coefficient for the initial average pressure rise rate, wherein the fourth preset relationship is used to characterize the mapping relationship between the maximum volume and the second correction coefficient.

7. The hydrogenation control method according to claim 1, characterized in that, The correction factor for matching the initial average pressure rise rate according to the type of hydrogen storage cylinder and the volume of each hydrogen storage cylinder includes: A first correction coefficient is determined based on the hydrogen storage cylinder type and a third preset relationship, wherein the third preset relationship is used to characterize the mapping relationship between the hydrogen storage cylinder type and the first correction coefficient; Obtain the maximum volume of each hydrogen storage cylinder, and determine a second correction coefficient based on the maximum volume and a fourth preset relationship, wherein the fourth preset relationship is used to characterize the mapping relationship between the maximum volume and the second correction coefficient; The product of the first correction coefficient and the second correction coefficient is obtained to obtain the correction coefficient for the initial average pressure rise rate.

8. A computer-readable storage medium, characterized in that, It stores a hydrogenation control program, which, when executed by a processor, implements the hydrogenation control method according to any one of claims 1-7.

9. A hydrogenation control device, characterized in that, The device includes: The first acquisition module is used to acquire the initial average pressure rise rate of the hydrogen storage system. The second acquisition module is used to acquire the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder in the hydrogen storage system. A matching module is used to match a correction coefficient for the initial average pressure rise rate based on the type of hydrogen storage cylinder and / or the volume of each hydrogen storage cylinder when the initial average pressure rise rate does not meet a preset condition. The control module is used to correct the initial average pressure rise rate according to the correction coefficient, and to perform hydrogenation control based on the corrected initial average pressure rise rate.

10. A hydrogenation device, characterized in that, The device includes a memory, a processor, and a hydrogenation control program stored in the memory and executable on the processor. When the processor executes the hydrogenation control program, it implements the hydrogenation control method according to any one of claims 1-7.

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