Alloy hydrogen storage system, method and device for measuring residual hydrogen amount, equipment and storage medium

Abstract

The application discloses an alloy hydrogen storage system, a method and device for measuring residual hydrogen amount, equipment and a storage medium, wherein the alloy hydrogen storage system comprises one or more hydrogen charging branches and one or more hydrogen discharging branches; the input ends of the hydrogen charging branches are connected with a hydrogen charging pipe after being merged; the output ends of the hydrogen charging branches are connected with one side of an inner container of the alloy hydrogen storage device after being merged; the input ends of the hydrogen discharging branches are connected with the other side of the inner container of the alloy hydrogen storage device after being merged; the output ends of the hydrogen discharging branches are connected with a hydrogen discharging pipe after being merged; a hydrogen charging control electromagnetic valve and a hydrogen mass flow meter are arranged on each hydrogen charging branch; a hydrogen discharging control electromagnetic valve and a hydrogen mass flow controller are arranged on each hydrogen discharging branch; and each hydrogen charging control electromagnetic valve, hydrogen mass flow meter, hydrogen discharging control electromagnetic valve and hydrogen mass flow controller are in communication connection with a control unit. The application can detect the residual hydrogen amount in the alloy hydrogen storage device.

Description

Technical Field

[0001] This invention relates to alloy hydrogen storage systems, methods, devices, equipment, and storage media for measuring residual hydrogen, and belongs to the field of hydrogen storage technology. Background Technology

[0002] Solid-state hydrogen storage is a promising hydrogen storage technology due to its advantages such as high volumetric hydrogen storage density, low storage pressure, and high safety. Currently, alloy solid-state hydrogen storage devices using rare earth alloys, titanium alloys, and other materials as hydrogen storage materials have been demonstrated in stationary application scenarios, such as hydrogen storage in large-scale renewable energy hydrogen production bases and hydrogen source storage for fuel cell backup power.

[0003] Accurate determination of hydrogen charge, hydrogen release, and remaining hydrogen content is crucial for the practical application of alloy hydrogen storage systems. Because hydrogen storage alloys have corresponding hydrogen absorption / desorption plateau pressures during hydrogen absorption and desorption, the hydrogen content of an alloy hydrogen storage system is not specifically related to the hydrogen pressure; therefore, the hydrogen content of an alloy hydrogen storage system cannot be calculated using the hydrogen pressure difference.

[0004] Currently, the amount of hydrogen absorbed / desorbed and the remaining hydrogen quantity are generally calculated by measuring the hydrogen flow rate during the hydrogen absorption / desorption process. Chinese utility model patent application number 201320027862.4 discloses an online measurement device for the amount of hydrogen stored / released in a metal hydride hydrogen storage device. This device can measure the instantaneous hydrogen flow rate during the hydrogen charging / desorption process of the metal hydride hydrogen storage device, and thus calculate the charging and desorption amounts through integration. Chinese invention patent application number 201410560074.0 discloses a method and apparatus for detecting the remaining hydrogen quantity in a metal hydride hydrogen storage device. This method uses the measured hydrogen pressure and the measured hydrogen desorption amount to derive a curve showing the relationship between the internal pressure of the hydrogen storage device and the remaining hydrogen quantity; this apparatus can measure the instantaneous hydrogen flow rate during the charging / desorption process of the hydrogen storage device, and thus calculate the charging and desorption amounts through integration.

[0005] Due to the thermodynamic and kinetic factors of hydrogen absorption and desorption in hydrogen storage alloys, the hydrogen storage system experiences a rapid initial charge and subsequent slowdown during the hydrogen charging and desorption process. Therefore, the hydrogen flow rate fluctuates significantly, with an upper limit exceeding 1000 SLM and a lower limit below 1 SLM. Since the flowmeter's range ratio is 200:1, existing testing methods, limited by the flowmeter's manufacturing process, generally only measure flow rates within a specific defined range and are not suitable for measuring flow rates outside that range.

[0006] Therefore, this application proposes an alloy hydrogen storage system, a method, apparatus, equipment, and storage medium for measuring residual hydrogen. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide an alloy hydrogen storage system, a method, apparatus, equipment and storage medium for measuring the amount of residual hydrogen, which can record the instantaneous flow rate throughout the hydrogen charging and discharging process, so as to improve the monitoring efficiency and detection accuracy of the amount of residual hydrogen in the alloy hydrogen storage device.

[0008] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0009] On the one hand, the present invention provides an alloy hydrogen storage system, including one or more hydrogen charging branches and one or more hydrogen discharging branches;

[0010] The input ends of each hydrogen charging branch converge and are connected to the hydrogen charging port pipeline, and the output ends of each hydrogen charging branch converge and are connected to the pipeline on one side of the inner liner of the alloy hydrogen storage device.

[0011] The input ends of each hydrogen release branch converge and are connected to the pipeline on the other side of the inner liner of the alloy hydrogen storage device; the output ends of each hydrogen release branch converge and are connected to the hydrogen release port pipeline.

[0012] Each hydrogen charging branch is equipped with a hydrogen charging control solenoid valve and a hydrogen mass flow meter. The metering range of each hydrogen mass flow meter is set in a gradient, with the lower limit of the minimum gradient metering range being 0.

[0013] Each hydrogen release branch is equipped with a hydrogen release control solenoid valve and a hydrogen mass flow controller. The range of each hydrogen mass flow controller is set in a gradient, with the lower limit of the minimum gradient range being 0.

[0014] Each hydrogen filling control solenoid valve, hydrogen mass flow meter, hydrogen release control solenoid valve, and hydrogen mass flow controller is communicatively connected to the control unit.

[0015] Furthermore, the alloy hydrogen storage device has a hot and cold circulating water outlet and a hot and cold circulating water inlet on its shell.

[0016] Furthermore, the control unit includes a lower-level machine, one end of which is communicatively connected to the upper-level machine, and the other end of which is communicatively connected to each hydrogen charging control solenoid valve, hydrogen mass flow meter, hydrogen releasing control solenoid valve, and hydrogen mass flow controller.

[0017] Furthermore, hydrogen mass flow controllers with adjacent range gradients have overlapping ranges.

[0018] Furthermore, hydrogen mass flow meters with adjacent measurement range gradients have overlapping measurement ranges.

[0019] On the other hand, the present invention provides a method for measuring the amount of residual hydrogen, wherein the measurement method is implemented using the aforementioned alloy hydrogen storage system.

[0020] Furthermore, the method for measuring the remaining hydrogen content includes:

[0021] The hydrogen storage alloy in the activated alloy hydrogen storage device was activated, and the amount of hydrogen added and released during the activation process was recorded.

[0022] The fully activated alloy hydrogen storage system was subjected to hydrogen charging and decharging treatment, and the amount of hydrogen charged and decharged during the process was recorded.

[0023] The remaining hydrogen content in the alloy hydrogen storage system is determined based on the amount of hydrogen charged and released during the activation process, as well as the amount of hydrogen charged and released during the hydrogen charging and releasing process.

[0024] Furthermore, the hydrogen storage alloy in the activated alloy hydrogen storage device, and the recording of hydrogen charging and discharging during the activation process, include:

[0025] The alloy hydrogen storage system is subjected to multiple activation and hydrogen charging treatments and activation and hydrogen degassing treatments. The amount of hydrogen charged and degassing in each activation and hydrogen charging treatment and activation and hydrogen degassing treatment is recorded. The activation process is completed when the amount of hydrogen degassing in the current activation and hydrogen degassing treatment is less than or equal to the amount of hydrogen degassing in the previous activation and hydrogen degassing treatment.

[0026] The amount of hydrogen charged and released during each activation process is accumulated to determine the amount of hydrogen charged and released during the activation process.

[0027] Furthermore, the activation hydrogen charging treatment and activation hydrogen decharging treatment include:

[0028] Close all valves and connect the hot and cold circulating water outlet and inlet of the alloy hydrogen storage device (A) to a cold source;

[0029] After connecting the hydrogen charging port (A3) to the hydrogen source, open the hydrogen charging control solenoid valve of the hydrogen charging branch corresponding to the hydrogen mass flow meter with the maximum metering range, record the instantaneous flow value in the currently operating hydrogen charging branch in real time, and enter the loop step a until the instantaneous flow value in the hydrogen charging branch is less than or equal to the preset value:

[0030] Cyclic step a: In response to the difference between the instantaneous flow value and the lower limit of the metering range of the hydrogen mass flow meter currently in operation being less than or equal to a preset value, the hydrogen charging control solenoid valve of the current operation is closed, the hydrogen charging control solenoid valve of the hydrogen mass flow meter to which the upper limit of the metering range overlaps with the lower limit of the metering range of the current operation hydrogen mass flow meter is opened, and the instantaneous flow value in the hydrogen charging branch of the current operation is recorded in real time.

[0031] If the instantaneous flow rate in the hydrogen charging branch of the current operation is less than or equal to the preset value, the hydrogen charging control solenoid valve of the current operation is closed, and the amount of hydrogen charged during the activation hydrogen charging process is determined based on the integral of the instantaneous flow rate over time.

[0032] Connect the hot and cold circulating water outlet and inlet of the alloy hydrogen storage device (A) to a heat source, connect the hydrogen release port (A4) to the hydrogen-using equipment, open the hydrogen release control solenoid valve of the hydrogen release branch to which the maximum range hydrogen mass flow controller belongs, so that the difference between the upper limit of the maximum range and the instantaneous flow value of the currently operating hydrogen release branch is greater than or equal to a preset threshold, and record the instantaneous flow value in the currently operating hydrogen release branch in real time, and enter the cycle step b until the instantaneous flow value in the hydrogen release branch is less than or equal to a preset value:

[0033] Cyclic step b: In response to the difference between the instantaneous flow rate value and the lower limit of the range of the hydrogen mass flow controller currently in operation being less than or equal to a preset value, the hydrogen release control solenoid valve of the current operation is closed, and the hydrogen release control solenoid valve of the hydrogen mass flow controller to which the upper limit of the range overlaps with the lower limit of the range of the current operation is opened, so that the difference between the upper limit of the range of the hydrogen mass flow controller and the instantaneous flow rate value is greater than or equal to a preset threshold, and the instantaneous flow rate value in the hydrogen release branch of the current operation is recorded in real time.

[0034] If the instantaneous flow rate in the hydrogen release branch of the current operation is less than or equal to a preset value, the hydrogen release control solenoid valve of the current operation is closed, and the amount of hydrogen released during the activation hydrogen release process is determined based on the integral of the instantaneous flow rate over time.

[0035] Furthermore, the hydrogen charging and decharging treatment of the fully activated alloy hydrogen storage system includes:

[0036] Close all valves and connect the hot and cold circulating water outlet and inlet of the alloy hydrogen storage device (A) to a cold source;

[0037] After connecting the hydrogen charging port (A3) to the hydrogen source, open the hydrogen charging control solenoid valve of the hydrogen charging branch to which the hydrogen mass flow meter with the maximum metering range belongs. Record the instantaneous flow value in the hydrogen charging branch currently in operation in real time, and enter the loop step a2 until the instantaneous flow value in the hydrogen charging branch is less than or equal to the second preset value:

[0038] Cyclic step a2: In response to the difference between the instantaneous flow value and the lower limit of the metering range of the hydrogen mass flow meter currently in operation being less than or equal to a preset value, the hydrogen charging control solenoid valve of the current operation is closed, the hydrogen charging control solenoid valve of the hydrogen mass flow meter to which the upper limit of the metering range overlaps with the lower limit of the metering range of the current operation hydrogen mass flow meter is opened, and the instantaneous flow value in the hydrogen charging branch of the current operation is recorded in real time.

[0039] If the instantaneous flow rate in the hydrogen charging branch of the current operation is less than or equal to the preset value, the hydrogen charging control solenoid valve of the current operation is closed, and the amount of hydrogen charged during the hydrogen charging and discharging process is determined based on the integral of the instantaneous flow rate over time.

[0040] Connect the hot and cold circulating water outlet and inlet of the alloy hydrogen storage device (A) to a heat source, connect the hydrogen release port (A4) to the hydrogen-using equipment, open the hydrogen release control solenoid valve of the hydrogen mass flow controller with a preset flow value in the middle range, and record the instantaneous flow value in the currently operating hydrogen release branch in real time, and proceed to cycle step b2 until the instantaneous flow value in the hydrogen release branch is less than or equal to the third preset value:

[0041] Cyclic step b2: In response to the difference between the instantaneous flow rate value and the lower limit of the range of the hydrogen mass flow controller currently in operation being less than or equal to a preset value, the hydrogen release control solenoid valve of the current operation is closed, and the hydrogen release control solenoid valve of the hydrogen mass flow controller to which the upper limit of the range overlaps with the lower limit of the range of the current operation is opened, so that the difference between the upper limit of the range of the hydrogen mass flow controller and the instantaneous flow rate value is greater than or equal to a preset threshold, and the instantaneous flow rate value in the hydrogen release branch of the current operation is recorded in real time.

[0042] If the instantaneous flow rate in the hydrogen release branch of the current operation is less than or equal to a preset value, the hydrogen release control solenoid valve of the current operation is closed, and the amount of hydrogen released during the hydrogen charging and releasing process is determined based on the integral of the instantaneous flow rate over time.

[0043] Furthermore, the remaining hydrogen content includes the following formula:

[0044] Remaining hydrogen content = (Amount of hydrogen charged during activation - Amount of hydrogen released during activation) + (Amount of hydrogen charged during hydrogen charging and releasing - Amount of hydrogen released during hydrogen charging and releasing).

[0045] On the other hand, the present invention provides a device for measuring the amount of residual hydrogen, comprising:

[0046] An activation module is used to activate the hydrogen storage alloy of the alloy hydrogen storage device and record the amount of hydrogen charged and released during the activation process.

[0047] The hydrogen charging and discharging module is used to charge and discharge hydrogen in a fully activated alloy hydrogen storage system and record the amount of hydrogen charged and discharged during the process.

[0048] The calculation module is used to determine the remaining hydrogen in the alloy hydrogen storage system based on the amount of hydrogen charged and released during the activation process, as well as the amount of hydrogen charged and released during the hydrogen charging and releasing process.

[0049] On the other hand, the present invention provides a computer-readable storage medium having a computer program stored thereon, characterized in that, when the computer program is executed by a processor, it implements the above-described method for measuring the amount of remaining hydrogen.

[0050] On the other hand, the present invention provides an apparatus comprising:

[0051] Memory, used to store instructions;

[0052] A processor is configured to execute the instructions, causing the device to perform operations implementing the method for measuring the remaining hydrogen quantity as described above.

[0053] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0054] This invention can quickly complete the hydrogen charging and discharging process and record the instantaneous flow rate throughout the entire process, thereby improving the detection efficiency and accuracy of the remaining hydrogen in the alloy hydrogen storage device.

[0055] This invention can record the amount of hydrogen charged and discharged during the activation process of the alloy hydrogen storage device, and can also record the amount of hydrogen charged and discharged during the hydrogen charging and discharging process after activation. By recording the amount of hydrogen charged and discharged during the activation process and the amount of hydrogen charged and discharged during the hydrogen charging and discharging process, the remaining amount of hydrogen in the alloy hydrogen storage device can be determined, thereby improving the accuracy of the results.

[0056] The hydrogen mass flow meter and the hydrogen mass flow controller of the present invention are set with gradients, which can improve the detection efficiency of the remaining hydrogen in the alloy hydrogen storage device. Attached Figure Description

[0057] Figure 1 The diagram shown is a schematic representation of an embodiment of the alloy hydrogen storage system of the present invention.

[0058] Figure 2 The diagram shown is a schematic flowchart of an embodiment of the method for measuring the remaining hydrogen content of the present invention.

[0059] In the diagram: A, Alloy hydrogen storage device; A1, Hot and cold circulating water inlet; A2, Hot and cold circulating water outlet; A3, Hydrogen charging port; A4, Hydrogen discharging port; B1, Lower-level computer; B2, Upper-level computer; C1, First hydrogen charging control solenoid valve; C2, Second hydrogen charging control solenoid valve; C3, Third hydrogen charging control solenoid valve; D1, First hydrogen mass flow meter; D2, Second hydrogen mass flow meter; D3, Third hydrogen mass flow meter; E1, First hydrogen discharging control solenoid valve; E2, Second hydrogen discharging control solenoid valve; E3, Third hydrogen discharging control solenoid valve; F1, First hydrogen mass flow controller; F2, Second hydrogen mass flow controller; F3, Third hydrogen mass flow controller. Detailed Implementation

[0060] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0062] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0063] Example 1

[0064] This embodiment describes an alloy hydrogen storage system.

[0065] The alloy hydrogen storage system of this embodiment includes one or more hydrogen charging branches and one or more hydrogen discharging branches.

[0066] refer to Figure 1 The input ends of each hydrogen charging branch converge and are connected to the hydrogen charging port A3 pipeline. The output ends of each hydrogen charging branch converge and are connected to the pipeline on one side of the inner liner of the alloy hydrogen storage device A.

[0067] The input ends of each hydrogen release branch converge and are connected to the pipeline on the other side of the inner liner of the alloy hydrogen storage device A. The output ends of each hydrogen release branch converge and are connected to the hydrogen release port A4 pipeline.

[0068] Each hydrogen charging branch is equipped with a hydrogen charging control solenoid valve and a hydrogen mass flow meter. The metering range of each hydrogen mass flow meter is set in a gradient, with the lower limit of the minimum metering range being 0.

[0069] When applying this method, the upper limit of the maximum metering range should be greater than the maximum flow rate of the external hydrogen source.

[0070] Each hydrogen release branch is equipped with a hydrogen release control solenoid valve and a hydrogen mass flow controller. The ranges of each hydrogen mass flow controller are set in a gradient, with the lower limit of the minimum range being 0.

[0071] When applied, the upper limit of the maximum capacity is greater than the maximum flow rate when the alloy hydrogen storage device A releases hydrogen.

[0072] Each hydrogen filling control solenoid valve, hydrogen mass flow meter, hydrogen release control solenoid valve, and hydrogen mass flow controller is communicatively connected to the control unit.

[0073] This invention can quickly complete the hydrogen charging and discharging process and record the instantaneous flow rate throughout the entire process, thereby improving the detection efficiency and accuracy of the remaining hydrogen in the alloy hydrogen storage device.

[0074] Example 2

[0075] Based on Example 1, this example details an alloy hydrogen storage system.

[0076] The alloy hydrogen storage device A has a hot and cold circulating water outlet A2 and a hot and cold circulating water inlet A1 on its shell. (Refer to...) Figure 1 .

[0077] The control unit includes a lower-level machine B1, which is connected to the upper-level machine B2 via communication at one end, and to each hydrogen filling control solenoid valve, hydrogen mass flow meter, hydrogen release control solenoid valve, and hydrogen mass flow controller via communication at the other end.

[0078] Hydrogen mass flow controllers with adjacent range gradients have overlapping ranges.

[0079] When applying this method, the overlap range should be greater than or equal to 10% of the range of the hydrogen mass flow controller.

[0080] Hydrogen mass flow meters with adjacent measurement range gradients have overlapping measurement ranges.

[0081] When applying this method, the overlapping metering range should be greater than or equal to 10% of the metering range of the hydrogen mass flow meter.

[0082] Example 3

[0083] Based on Example 1 or Example 2, this example details an alloy hydrogen storage system.

[0084] The alloy hydrogen storage system of this embodiment includes an alloy hydrogen storage device A, a lower-level computer B1, a higher-level computer B2, a hydrogen filling port A3, a hydrogen discharging port A4, a hot and cold circulating water inlet A1, a hot and cold circulating water outlet A2, a first hydrogen filling control solenoid valve C1, a second hydrogen filling control solenoid valve C2, a third hydrogen filling control solenoid valve C3, a first hydrogen mass flow meter D1, a second hydrogen mass flow meter D2, a third hydrogen mass flow meter D3, a first hydrogen discharging control solenoid valve E1, a second hydrogen discharging control solenoid valve E2, a third hydrogen discharging control solenoid valve E3, a first hydrogen mass flow controller F1, a second hydrogen mass flow controller F2, and a third hydrogen mass flow controller F3.

[0085] Among them, the alloy of the alloy hydrogen storage device A refers to one or more of the following: rare earth alloys, titanium alloys, rare earth magnesium alloys, and vanadium alloys.

[0086] In application, the alloy hydrogen storage system of this embodiment includes three hydrogen charging branches and three hydrogen discharging branches. The input ends of each hydrogen charging branch converge and connect to the hydrogen charging port A3 pipeline, and the output ends of each hydrogen charging branch converge and connect to one side of the inner liner of the alloy hydrogen storage device A. The input ends of each hydrogen discharging branch converge and connect to the other side of the inner liner of the alloy hydrogen storage device A, and the output ends of each hydrogen discharging branch converge and connect to the hydrogen discharging port A4 pipeline.

[0087] refer to Figure 1 The first hydrogen filling control solenoid valve C1 and the first hydrogen mass flow meter D1 are installed on the same hydrogen filling branch, the second hydrogen filling control solenoid valve C2 and the second hydrogen mass flow meter D2 are installed on the same hydrogen filling branch, and the third hydrogen filling control solenoid valve C3 and the third hydrogen mass flow meter D3 are installed on the same hydrogen filling branch.

[0088] In application, those skilled in the art can select Alicat M-series gas mass flow meters as the hydrogen mass flow meters in this embodiment: select the low-range M-1SCCM-D or M-100SCCM-D as the third hydrogen mass flow meter D3; select the medium-range M-1SLPM-D or M-100SLPM-D as the second hydrogen mass flow meter D2; and select the high-range M-1000SLPM-D or M-5000SLPM-D as the first hydrogen mass flow meter D1.

[0089] refer to Figure 1 The first hydrogen release control solenoid valve E1 and the first hydrogen mass flow controller F1 are installed on the same hydrogen release branch, the second hydrogen release control solenoid valve E2 and the second hydrogen mass flow controller F2 are installed on the same hydrogen release branch, and the third hydrogen release control solenoid valve E3 and the third hydrogen mass flow controller F3 are installed on the same hydrogen release branch.

[0090] In application, those skilled in the art can select Alicat MC series gas mass flow controllers as the hydrogen mass flow controllers in this embodiment: select the low-range MC-1SCCM-D, MC-10SCCM-D, MC-100SCCM-D or MC-10SLPM-D as the third hydrogen mass flow controller F3; select the medium-range MCP-100SLPM-D or MCH-500SLPM-D as the second hydrogen mass flow controller F2; select the high-range MCR-1000SLPM-D or MCRH-5000SLPM-D-PAR as the first hydrogen mass flow controller F1.

[0091] refer to Figure 1 The lower-level machine B1 is connected to the upper-level machine B2 via communication on one end, and to each hydrogen charging control solenoid valve, hydrogen mass flow meter, hydrogen release control solenoid valve, and hydrogen mass flow controller via communication on the other end.

[0092] In application, the lower-level computer B1 is used to receive instructions from the upper-level computer B2 to control the opening and closing of each solenoid valve. At the same time, it collects the instantaneous flow rate of each hydrogen mass flow meter and the instantaneous flow rate of the hydrogen mass flow controller in real time and uploads them to the upper-level computer B2 in real time.

[0093] Example 4

[0094] Based on any one of Examples 1-3, this example introduces a method for measuring the amount of residual hydrogen.

[0095] The method for measuring the remaining hydrogen content in this embodiment includes, as referenced Figure 2 :

[0096] The S1 activated alloy hydrogen storage device uses hydrogen storage alloy, and records the amount of hydrogen added and released during the activation process.

[0097] S2 performs hydrogen charging and decharging treatment on the fully activated alloy hydrogen storage system and records the amount of hydrogen charged and decharged during the process.

[0098] S3 determines the remaining hydrogen amount in the alloy hydrogen storage system based on the amount of hydrogen charged and released during the activation process, as well as the amount of hydrogen charged and released during the hydrogen charging and releasing process.

[0099] This invention can record the amount of hydrogen charged and released during the activation process, as well as the amount of hydrogen charged and released during the hydrogen charging and releasing process after activation. By recording the amount of hydrogen charged and released during the activation process and the amount of hydrogen charged and released during the hydrogen charging and releasing process, the remaining amount of hydrogen in the alloy hydrogen storage device can be determined, thereby improving the accuracy of the results.

[0100] Example 5

[0101] Based on any one of Examples 1-3, this example details a method for measuring the amount of residual hydrogen.

[0102] The method for measuring the residual hydrogen content in this embodiment includes:

[0103] The S1 activated alloy hydrogen storage device uses hydrogen storage alloy, and records the amount of hydrogen added and released during the activation process.

[0104] Step S1 includes the following steps:

[0105] The alloy hydrogen storage system is subjected to multiple activation and hydrogen charging treatments and activation and hydrogen degassing treatments. The amount of hydrogen charged and degassing during each activation and hydrogen charging treatment and activation and hydrogen degassing treatment is recorded. The activation process is completed when the amount of hydrogen degassing in the current activation and hydrogen degassing treatment is less than or equal to the amount of hydrogen degassing in the previous activation and hydrogen degassing treatment.

[0106] The amount of hydrogen charged and released during each activation process is accumulated to determine the amount of hydrogen charged and released during the activation process.

[0107] In application, the activation hydrogen charging treatment and activation hydrogen decharging treatment include:

[0108] S11 Close all valves and connect the hot and cold circulating water outlet and inlet of alloy hydrogen storage device A to a cold source.

[0109] After connecting the hydrogen charging port A3 to the hydrogen source, S12 opens the hydrogen charging control solenoid valve of the hydrogen charging branch to which the hydrogen mass flow meter with the maximum metering range belongs, records the instantaneous flow value in the hydrogen charging branch currently in operation in real time, and enters the loop step a until the instantaneous flow value in the hydrogen charging branch is less than or equal to the preset value.

[0110] Cyclic step a: In response to the difference between the instantaneous flow rate value and the lower limit of the metering range of the currently operating hydrogen mass flow meter being less than or equal to a preset value, the hydrogen charging control solenoid valve of the currently operating hydrogen mass flow meter is closed, the hydrogen charging control solenoid valve of the hydrogen charging branch to which the upper limit of the metering range overlaps with the lower limit of the metering range of the currently operating hydrogen mass flow meter is opened, and the instantaneous flow rate value in the hydrogen charging branch of the currently operating hydrogen mass flow meter is recorded in real time.

[0111] S13 responds to the instantaneous flow rate in the hydrogen charging branch of the current operation being less than or equal to a preset value, closes the hydrogen charging control solenoid valve of the current operation, and determines the amount of hydrogen charged in the current activation hydrogen charging process based on the integral of the instantaneous flow rate over time.

[0112] S14 connects the hot and cold circulating water outlet and inlet of the alloy hydrogen storage device A to a heat source, opens the hydrogen release control solenoid valve of the hydrogen release branch to which the maximum range hydrogen mass flow controller belongs, so that the difference between the upper limit of the maximum range and the instantaneous flow value of the currently operating hydrogen release branch is greater than or equal to a preset threshold, and records the instantaneous flow value in the currently operating hydrogen release branch in real time, and enters the cycle step b until the instantaneous flow value in the hydrogen release branch is less than or equal to the preset value.

[0113] Cyclic step b: In response to the difference between the instantaneous flow rate value and the lower limit of the range of the hydrogen mass flow controller currently in operation being less than or equal to a preset value, the hydrogen release control solenoid valve of the currently in operation is closed, and the hydrogen release control solenoid valve of the hydrogen mass flow controller to which the upper limit of the range overlaps with the lower limit of the range of the currently in operation is opened, so that the difference between the upper limit of the range of the hydrogen mass flow controller and the instantaneous flow rate value is greater than or equal to a preset threshold, and the instantaneous flow rate value in the hydrogen release branch of the currently in operation is recorded in real time.

[0114] S15 responds to the instantaneous flow rate in the hydrogen release branch of the current operation being less than or equal to a preset value, closes the hydrogen release control solenoid valve of the current operation, and determines the amount of hydrogen released during the current activation hydrogen release process based on the integral of the instantaneous flow rate over time.

[0115] S2 performs hydrogen charging and decharging treatment on the fully activated alloy hydrogen storage system and records the amount of hydrogen charged and decharged during the process.

[0116] Step S2 includes the following steps:

[0117] S21 Close all valves and connect the hot and cold circulating water outlet and inlet of alloy hydrogen storage device A to a cold source.

[0118] After connecting the hydrogen charging port A3 to the hydrogen source, S22 opens the hydrogen charging control solenoid valve of the hydrogen charging branch to which the hydrogen mass flow meter with the maximum metering range belongs, records the instantaneous flow value in the hydrogen charging branch currently in operation in real time, and enters the loop step a2 until the instantaneous flow value in the hydrogen charging branch is less than or equal to the second preset value.

[0119] When applying, the second preset value is greater than or equal to the preset value.

[0120] In practical applications, the loop step a2 is as follows: In response to the difference between the instantaneous flow rate value and the lower limit of the metering range of the currently operating hydrogen mass flow meter being less than or equal to a preset value, the hydrogen charging control solenoid valve of the currently operating hydrogen mass flow meter is closed, the hydrogen charging control solenoid valve of the hydrogen charging branch to which the upper limit of the metering range overlaps with the lower limit of the metering range of the currently operating hydrogen mass flow meter is opened, and the instantaneous flow rate value in the hydrogen charging branch of the currently operating hydrogen mass flow meter is recorded in real time.

[0121] S23 responds to the instantaneous flow rate in the hydrogen charging branch of the current operation being less than or equal to a preset value, closes the hydrogen charging control solenoid valve of the current operation, and determines the amount of hydrogen charged during the hydrogen charging and discharging process based on the integral of the instantaneous flow rate over time.

[0122] S24 connects the hot and cold circulating water outlet and inlet of the alloy hydrogen storage device A to a heat source, connects the hydrogen release port A4 to the hydrogen-using equipment, opens the hydrogen release control solenoid valve of the hydrogen mass flow controller with a preset flow value in the middle range, records the instantaneous flow value in the hydrogen release branch currently in operation in real time, and enters the cycle step b2 until the instantaneous flow value in the hydrogen release branch is less than or equal to the third preset value.

[0123] When applying, the third preset value is greater than or equal to the preset value.

[0124] In practical applications, in step b2 of the loop: in response to the difference between the instantaneous flow rate value and the lower limit of the range of the hydrogen mass flow controller currently in operation being less than or equal to a preset value, the hydrogen release control solenoid valve of the currently operating hydrogen mass flow controller is closed, and the hydrogen release control solenoid valve of the hydrogen mass flow controller to which the upper limit of the range overlaps with the lower limit of the range of the currently operating hydrogen mass flow controller is opened, so that the difference between the upper limit of the range of the hydrogen mass flow controller and the instantaneous flow rate value is greater than or equal to a preset threshold, and the instantaneous flow rate value in the hydrogen release branch of the currently operating hydrogen mass flow controller is recorded in real time.

[0125] S25 responds to the instantaneous flow rate in the hydrogen release branch of the current operation being less than or equal to a preset value, closes the hydrogen release control solenoid valve of the current operation, and determines the amount of hydrogen released during the hydrogen charging and releasing process based on the integral of the instantaneous flow rate over time.

[0126] S3 determines the remaining hydrogen amount in the alloy hydrogen storage system based on the amount of hydrogen charged and released during the activation process, as well as the amount of hydrogen charged and released during the hydrogen charging and releasing process.

[0127] When applied, the remaining hydrogen content includes the following formula:

[0128] Remaining hydrogen content = (Amount of hydrogen charged during activation - Amount of hydrogen released during activation) + (Amount of hydrogen charged during hydrogen charging and releasing - Amount of hydrogen released during hydrogen charging and releasing).

[0129] Example 6

[0130] Based on any one of Examples 3-5, this example details a method for measuring the amount of residual hydrogen.

[0131] The S1 activated alloy hydrogen storage device uses hydrogen storage alloy, and records the amount of hydrogen added and released during the activation process.

[0132] During activation and hydrogen charging, connect hydrogen charging port A3 to the hydrogen source, and connect the hot and cold circulating water outlet A2 and the hot and cold circulating water inlet A1 to the cold source. The host computer B2 issues a command to open the first hydrogen charging control solenoid valve C1 through the slave computer B1. At this time, the first hydrogen charging control solenoid valve C1 opens, other valves close, and hydrogen charging begins. The high-flow-rate first hydrogen mass flow meter D1 transmits the instantaneous flow value to the host computer B2 in real time through the slave computer B1. The host computer determines the next action based on the instantaneous flow rate of the first hydrogen mass flow meter D1.

[0133] If the instantaneous flow rate of the first hydrogen mass flow meter D1 reaches its lower limit, the host computer B2 issues a command through the slave computer B1 to close the first hydrogen charging control solenoid valve C1 and open the second hydrogen charging control solenoid valve C2. At this time, the second hydrogen mass flow meter D2, operating at a medium flow rate, monitors the hydrogen flow rate and transmits the instantaneous flow rate value to the host computer B2 in real time through the slave computer B1. The host computer then determines the next action based on the instantaneous flow rate of the second hydrogen mass flow meter D2.

[0134] If the instantaneous flow rate of the second hydrogen mass flow meter D2 reaches its lower limit, the host computer B2 issues a command through the slave computer B1 to close the second hydrogen charging control solenoid valve C2 and open the third hydrogen charging control solenoid valve C3. At this time, the hydrogen flow rate is monitored by the low-flow-rate third hydrogen mass flow meter D3, and the instantaneous flow rate value is transmitted to the host computer B2 in real time through the slave computer B1. The host computer B2 calculates the hydrogen charging amount X0 in the current activation hydrogen charging process based on the integral of the instantaneous flow rate over time. When the current activation hydrogen charging process ends, the host computer B2 issues a command to close all valves.

[0135] During activation and hydrogen release, the hot and cold circulating water outlet A2 and the hot and cold circulating water inlet A1 are connected to a heat source. The host computer B2 issues a command to open the first hydrogen release control solenoid valve E1. At this time, the first hydrogen release control solenoid valve E1 opens, other valves close, and high-flow hydrogen release begins. The hydrogen release flow control value is set to 80% of the upper limit of the range of the first hydrogen mass flow controller F1. The high-flow first hydrogen mass flow controller F1 transmits the instantaneous flow value to the host computer B2 in real time through the slave computer B1. As hydrogen release progresses, the hydrogen release flow rate will decrease and will no longer be constant. The host computer B2 determines the next action based on the instantaneous flow rate of the high-flow first hydrogen mass flow controller F1.

[0136] If the instantaneous flow rate of the first hydrogen mass flow controller F1 reaches 105% of its lower limit, the host computer B2 issues a command through the slave computer B1 to close the first hydrogen release control solenoid valve E1 and open the second hydrogen release control solenoid valve E2. At this time, the hydrogen flow rate is monitored by the medium-flow second hydrogen mass flow controller F2, and the hydrogen release flow rate control value is set to 95% of its range. The instantaneous flow rate value is transmitted to the host computer B2 in real time through the slave computer B1. As hydrogen release proceeds, the hydrogen release flow rate will decrease and will no longer be constant. The host computer determines the next action based on the instantaneous flow rate of the second hydrogen mass flow controller F2.

[0137] If the instantaneous flow rate of the second hydrogen mass flow controller F2 reaches 105% of its lower limit, the host computer B2 issues a command to close the second hydrogen release control solenoid valve E2 and open the third hydrogen release control solenoid valve E3 via the slave computer B1. At this time, the hydrogen flow rate is monitored by the low-flow-rate third hydrogen mass flow controller F3, and the hydrogen release flow rate control value is set to 95% of the upper limit of the low-flow-rate third hydrogen mass flow controller F3. The instantaneous flow rate value is transmitted to the host computer B2 in real time via the slave computer B1. The host computer B2 calculates the hydrogen charging amount Y0 in the current activation and charging process based on the integral of the instantaneous flow rate over time. When the current activation and charging process ends, the host computer B2 issues a command to close all valves.

[0138] Repeat the above activation hydrogen charging and activation hydrogen absorption processes until the amount of hydrogen charged in the current activation hydrogen charging process is less than or equal to the amount of hydrogen charged in the previous activation hydrogen charging process.

[0139] S2 performs hydrogen charging and decharging treatment on the fully activated alloy hydrogen storage system and records the amount of hydrogen charged and decharged during the process.

[0140] During hydrogen charging, connect hydrogen charging port A3 to the hydrogen source, and connect the hot and cold circulating water outlet A2 and the hot and cold circulating water inlet A1 to the cold source. The host computer B2 sends a command to the slave computer B1 to open the first hydrogen charging control solenoid valve C1. At this time, the first hydrogen charging control solenoid valve C1 opens, other valves close, and hydrogen charging begins. The high-flow-rate first hydrogen mass flow meter D1 transmits the instantaneous flow value to the host computer B2 via the slave computer B1. The host computer determines the next action based on the instantaneous flow rate of the first hydrogen mass flow meter D1.

[0141] If the instantaneous flow rate of the first hydrogen mass flow meter D1 reaches its lower limit, the host computer B2 issues a command through the slave computer B1 to close the first hydrogen charging control solenoid valve C1 and open the second hydrogen charging control solenoid valve C2. At this time, the second hydrogen mass flow meter D2, operating at a medium flow rate, monitors the hydrogen flow rate and transmits the instantaneous flow rate value to the host computer B2 in real time through the slave computer B1. The host computer then determines the next action based on the instantaneous flow rate of the second hydrogen mass flow meter D2.

[0142] If the instantaneous flow rate of the second hydrogen mass flow meter D2 reaches its lower limit, the host computer B2 issues a command through the slave computer B1 to close the second hydrogen charging control solenoid valve C2 and open the third hydrogen charging control solenoid valve C3. At this time, the hydrogen flow rate is monitored by the low-flow-rate third hydrogen mass flow meter D3, and the instantaneous flow rate value is transmitted to the host computer B2 in real time through the slave computer B1. The host computer B2 calculates the hydrogen charging amount X during the hydrogen charging and discharging process based on the integral of the instantaneous flow rate over time. When the hydrogen charging is completed, the host computer B2 issues a command to close all valves.

[0143] During hydrogen release, connect the hydrogen release port A4 to the hydrogen-using equipment, and connect the hot and cold circulating water outlet A2 and the hot and cold circulating water inlet A1 to the heat source. Select a hydrogen mass flow controller with the appropriate range based on the required hydrogen flow rate. Input the required hydrogen flow rate value into the host computer B2, which determines which hydrogen mass flow controller to open first. If the hydrogen flow rate is within the range of the second hydrogen mass flow controller F2 (medium flow rate), the host computer B2 issues a command to open the second hydrogen release control solenoid valve E2, and the slave computer B1 executes the control command. At this time, the second hydrogen release control solenoid valve E2 opens, and the second hydrogen mass flow controller F2 outputs hydrogen at an approximately constant hydrogen rate, transmitting the instantaneous hydrogen flow rate value to the host computer B2 in real time. The host computer B2 calculates the hydrogen release amount Y during the hydrogen charging and discharging process based on the integral of the instantaneous flow rate over time. After hydrogen release is complete, the host computer B2 issues a command to close all valves.

[0144] S3 determines the remaining hydrogen amount in the alloy hydrogen storage system based on the amount of hydrogen charged and released during the activation process, as well as the amount of hydrogen charged and released during the hydrogen charging and releasing process.

[0145] The amount of hydrogen charged and released during each activation process is accumulated to determine the amount of hydrogen charged and released during the activation process.

[0146] The remaining hydrogen content includes the following formula:

[0147] Remaining hydrogen content = (Amount of hydrogen charged during activation - Amount of hydrogen released during activation) + (Amount of hydrogen charged during hydrogen charging and releasing - Amount of hydrogen released during hydrogen charging and releasing).

[0148] In practical applications, the cold source in this embodiment is cold water at 5-15°C, and those skilled in the art can adjust the water temperature according to actual needs. The heat source in this embodiment is hot water at a temperature below 100°C.

[0149] Example 7

[0150] This embodiment provides a device for measuring the amount of residual hydrogen, including:

[0151] An activation module is used to activate the hydrogen storage alloy of the alloy hydrogen storage device and record the amount of hydrogen charged and released during the activation process.

[0152] The hydrogen charging and discharging module is used to charge and discharge hydrogen in a fully activated alloy hydrogen storage system and record the amount of hydrogen charged and discharged during the process.

[0153] The calculation module is used to determine the remaining hydrogen in the alloy hydrogen storage system based on the amount of hydrogen charged and released during the activation process, as well as the amount of hydrogen charged and released during the hydrogen charging and releasing process.

[0154] The implementation of the functions of each module in this embodiment is based on the methods described in embodiments 4-6.

[0155] Example 8

[0156] This embodiment provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it implements the method for measuring the amount of residual hydrogen described in embodiments 4-6.

[0157] Example 9

[0158] This embodiment provides a device, including:

[0159] Memory, used to store instructions;

[0160] A processor is configured to execute the instructions, causing the device to perform operations that implement the method for measuring the amount of remaining hydrogen described in Examples 4-6.

[0161] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0162] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0163] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0164] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0165] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A method for measuring residual hydrogen content, characterized in that, The hydrogen storage system is implemented using an alloy hydrogen storage system, which includes one or more hydrogen charging branches and one or more hydrogen discharging branches. The input ends of each hydrogen charging branch converge and are connected to the hydrogen charging port (A3) pipeline. The output ends of each hydrogen charging branch converge and are connected to the pipeline on one side of the inner liner of the alloy hydrogen storage device (A). The input ends of each hydrogen release branch converge and are connected to the pipeline on the other side of the inner liner of the alloy hydrogen storage device (A). The output ends of each hydrogen release branch converge and are connected to the hydrogen release port (A4) pipeline. Each hydrogen charging branch is equipped with a hydrogen charging control solenoid valve and a hydrogen mass flow meter. The metering range of each hydrogen mass flow meter is set in a gradient, with the lower limit of the minimum gradient metering range being 0. Each hydrogen release branch is equipped with a hydrogen release control solenoid valve and a hydrogen mass flow controller. The range of each hydrogen mass flow controller is set in a gradient, with the lower limit of the minimum gradient range being 0. Each hydrogen charging control solenoid valve, hydrogen mass flow meter, hydrogen discharging control solenoid valve, and hydrogen mass flow controller is communicatively connected to the control unit; the alloy hydrogen storage device (A) has a hot and cold circulating water outlet (A2) and a hot and cold circulating water inlet (A1) on its shell. Hydrogen mass flow controllers with adjacent range gradients have overlapping ranges; And / or, hydrogen mass flow meters with adjacent metering range gradients have overlapping metering ranges; The measurement method includes: The hydrogen storage alloy in the activated alloy hydrogen storage device was activated, and the amount of hydrogen added and released during the activation process was recorded. The fully activated alloy hydrogen storage system was subjected to hydrogen charging and decharging treatment, and the amount of hydrogen charged and decharged during the process was recorded. The remaining hydrogen amount in the alloy hydrogen storage system is determined based on the amount of hydrogen charged and released during the activation process, as well as the amount of hydrogen charged and released during the hydrogen charging and releasing process. The remaining hydrogen content includes the following formula: Remaining hydrogen content = (hydrogen charge during activation - hydrogen release during activation) + (hydrogen charge during hydrogen charging and releasing - hydrogen release during hydrogen charging and releasing).

2. The method for measuring the remaining hydrogen content according to claim 1, characterized in that, The control unit includes a lower-level machine (B1), one end of which is communicatively connected to the upper-level machine (B2), and the other end of which is communicatively connected to each hydrogen charging control solenoid valve, hydrogen mass flow meter, hydrogen release control solenoid valve, and hydrogen mass flow controller.

3. The method for measuring the amount of residual hydrogen according to claim 1, characterized in that, The hydrogen storage alloy in the activated alloy hydrogen storage device, and the recording of hydrogen charging and discharging during the activation process, includes: The alloy hydrogen storage system is subjected to multiple activation and hydrogen charging treatments and activation and hydrogen degassing treatments. The amount of hydrogen charged and degassing in each activation and hydrogen charging treatment and activation and hydrogen degassing treatment is recorded. The activation process is completed when the amount of hydrogen degassing in the current activation and hydrogen degassing treatment is less than or equal to the amount of hydrogen degassing in the previous activation and hydrogen degassing treatment. The amount of hydrogen charged and released during each activation process is accumulated to determine the amount of hydrogen charged and released during the activation process.

4. The method for measuring the amount of residual hydrogen according to claim 3, characterized in that, The activation hydrogen charging treatment and activation hydrogen decharging treatment include: Close all valves and connect the hot and cold circulating water outlet and inlet of the alloy hydrogen storage device (A) to a cold source; After connecting the hydrogen charging port (A3) to the hydrogen source, open the hydrogen charging control solenoid valve of the hydrogen charging branch to which the hydrogen mass flow meter with the maximum metering range belongs. Record the instantaneous flow value in the hydrogen charging branch currently in operation in real time, and enter the loop step a until the instantaneous flow value in the hydrogen charging branch is less than or equal to the preset value: Cyclic step a: In response to the difference between the instantaneous flow value and the lower limit of the metering range of the hydrogen mass flow meter currently in operation being less than or equal to a preset value, the hydrogen charging control solenoid valve of the current operation is closed, the hydrogen charging control solenoid valve of the hydrogen mass flow meter to which the upper limit of the metering range overlaps with the lower limit of the metering range of the current operation hydrogen mass flow meter is opened, and the instantaneous flow value in the hydrogen charging branch of the current operation is recorded in real time. If the instantaneous flow rate in the hydrogen charging branch of the current operation is less than or equal to the preset value, the hydrogen charging control solenoid valve of the current operation is closed, and the amount of hydrogen charged during the activation hydrogen charging process is determined based on the integral of the instantaneous flow rate over time. Connect the hot and cold circulating water outlet and inlet of the alloy hydrogen storage device (A) to a heat source, connect the hydrogen release port (A4) to the hydrogen-using equipment, open the hydrogen release control solenoid valve of the hydrogen release branch to which the maximum range hydrogen mass flow controller belongs, so that the difference between the upper limit of the maximum range and the instantaneous flow value of the currently operating hydrogen release branch is greater than or equal to the preset threshold, and record the instantaneous flow value in the currently operating hydrogen release branch in real time, and enter the cycle step b until the instantaneous flow value in the hydrogen release branch is less than or equal to the preset value: Cyclic step b: In response to the difference between the instantaneous flow rate value and the lower limit of the range of the hydrogen mass flow controller currently in operation being less than or equal to a preset value, the hydrogen release control solenoid valve of the current operation is closed, and the hydrogen release control solenoid valve of the hydrogen mass flow controller to which the upper limit of the range overlaps with the lower limit of the range of the current operation is opened, so that the difference between the upper limit of the range of the hydrogen mass flow controller and the instantaneous flow rate value is greater than or equal to a preset threshold, and the instantaneous flow rate value in the hydrogen release branch of the current operation is recorded in real time; If the instantaneous flow rate in the hydrogen release branch of the current operation is less than or equal to a preset value, the hydrogen release control solenoid valve of the current operation is closed, and the amount of hydrogen released during the activation hydrogen release process is determined based on the integral of the instantaneous flow rate over time.

5. The method for measuring the amount of residual hydrogen according to claim 1, characterized in that, The hydrogen charging and dehydrogenation treatment of the fully activated alloy hydrogen storage system includes: Close all valves and connect the hot and cold circulating water outlet and inlet of the alloy hydrogen storage device (A) to a cold source; After connecting the hydrogen charging port (A3) to the hydrogen source, open the hydrogen charging control solenoid valve of the hydrogen charging branch to which the hydrogen mass flow meter with the maximum metering range belongs. Record the instantaneous flow value in the hydrogen charging branch currently in operation in real time, and enter the loop step a2 until the instantaneous flow value in the hydrogen charging branch is less than or equal to the second preset value: Cyclic step a2: In response to the difference between the instantaneous flow value and the lower limit of the metering range of the hydrogen mass flow meter currently in operation being less than or equal to a preset value, the hydrogen charging control solenoid valve of the current operation is closed, the hydrogen charging control solenoid valve of the hydrogen mass flow meter to which the upper limit of the metering range overlaps with the lower limit of the metering range of the current operation hydrogen mass flow meter is opened, and the instantaneous flow value in the hydrogen charging branch of the current operation is recorded in real time. If the instantaneous flow rate in the hydrogen charging branch of the current operation is less than or equal to the preset value, the hydrogen charging control solenoid valve of the current operation is closed, and the amount of hydrogen charged during the hydrogen charging and discharging process is determined based on the integral of the instantaneous flow rate over time. Connect the hot and cold circulating water outlet and inlet of the alloy hydrogen storage device (A) to a heat source, connect the hydrogen release port (A4) to the hydrogen-using equipment, open the hydrogen release control solenoid valve of the hydrogen mass flow controller with a preset flow value in the middle range, record the instantaneous flow value in the currently operating hydrogen release branch in real time, and proceed to cycle step b2 until the instantaneous flow value in the hydrogen release branch is less than or equal to the third preset value: Cyclic step b2: In response to the difference between the instantaneous flow rate value and the lower limit of the range of the hydrogen mass flow controller currently in operation being less than or equal to a preset value, the hydrogen release control solenoid valve of the current operation is closed, and the hydrogen release control solenoid valve of the hydrogen mass flow controller to which the upper limit of the range overlaps with the lower limit of the range of the current operation is opened, so that the difference between the upper limit of the range of the hydrogen mass flow controller and the instantaneous flow rate value is greater than or equal to a preset threshold, and the instantaneous flow rate value in the hydrogen release branch of the current operation is recorded in real time; If the instantaneous flow rate in the hydrogen release branch of the current operation is less than or equal to a preset value, the hydrogen release control solenoid valve of the current operation is closed, and the amount of hydrogen released during the hydrogen charging and releasing process is determined based on the integral of the instantaneous flow rate over time.

6. A measuring apparatus for performing the method for measuring the amount of residual hydrogen according to any one of claims 1-5, characterized in that, include: An activation module is used to activate the hydrogen storage alloy of the alloy hydrogen storage device and record the amount of hydrogen charged and released during the activation process. The hydrogen charging and discharging module is used to charge and discharge hydrogen in a fully activated alloy hydrogen storage system and record the amount of hydrogen charged and discharged during the process. The calculation module is used to determine the remaining hydrogen in the alloy hydrogen storage system based on the amount of hydrogen charged and released during the activation process, as well as the amount of hydrogen charged and released during the hydrogen charging and releasing process.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the method for measuring the amount of residual hydrogen as described in any one of claims 1-5.

8. A device, characterized in that, include: Memory, used to store instructions; A processor for executing the instructions to cause the device to perform operations implementing the method for measuring the amount of remaining hydrogen as described in any one of claims 1-5.

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