Hydrogen amount monitoring method and system

Abstract

The invention relates to the technical field of hydrogen energy, in particular to a hydrogen amount monitoring method and system.The hydrogen amount monitoring method comprises the following steps that S1, the hydrogen charging flow and the hydrogen charging time in the hydrogen charging process are obtained, the amount of hydrogen charged into a hydrogen storage container in the hydrogen charging process is calculated, and the total amount of hydrogen is obtained; s2, acquiring hydrogen desorption flow and hydrogen desorption time when the hydrogen storage container supplies hydrogen to the hydrogen using end, and calculating the accumulated hydrogen amount when the hydrogen storage container supplies hydrogen to the outside to obtain the hydrogen using amount; s3, the hydrogen amount is subtracted from the total hydrogen amount, and the hydrogen balance is obtained. According to the method, the total amount of hydrogen and the use amount of hydrogen are obtained by monitoring the flow in the hydrogen charging process and the flow in the hydrogen discharging process, and then the hydrogen remaining amount is obtained by subtracting the use amount of hydrogen from the total amount of hydrogen, so that compared with the prior art that the hydrogen amount (including the total amount of hydrogen, the use amount of hydrogen and the hydrogen remaining amount) is judged through hydrogen pressure; the hydrogen amount data can be more accurately obtained through the flow and time calculation and accumulation mode.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen energy technology, and in particular to a hydrogen quantity monitoring method and system. Background Art

[0002] With the rapid breakthrough of new energy technology and the rapid development of low-carbon economy, the use of hydrogen has always been the focus of attention. Solid-state hydrogen storage technology plays an important role in the field of hydrogen energy as a safe, stable and efficient energy storage method. In the existing hydrogen energy use scenarios, only the pressure of the hydrogen storage container of the solid-state hydrogen storage device is monitored and displayed. People judge the remaining amount of hydrogen in the hydrogen storage container by the pressure of the hydrogen storage container. Affected by temperature, hydrogen storage material characteristics, etc., the pressure of the hydrogen storage container does not completely correspond to the amount of hydrogen in it, making this judgment method inaccurate and it is still difficult to obtain accurate hydrogen volume data. Summary of the invention

[0003] The purpose of the present invention is to provide a method and system for monitoring the amount of hydrogen, so as to solve the problem that the existing hydrogen energy use device is difficult to accurately monitor the amount of hydrogen.

[0004] To achieve the above object, the technical solution of the present invention includes: a method for monitoring hydrogen volume, comprising the following steps:

[0005] S1: Obtain the hydrogen filling flow rate and hydrogen filling time during the hydrogen filling process, calculate the amount of hydrogen filled into the hydrogen storage container during the hydrogen filling process, and obtain the total amount of hydrogen;

[0006] S2: Obtain the hydrogen discharge flow rate and hydrogen discharge time of the hydrogen storage container supplying hydrogen to the hydrogen user end, calculate the cumulative amount of hydrogen supplied by the hydrogen storage container to the outside, and obtain the hydrogen consumption;

[0007] S3: Subtract the amount of hydrogen used from the total amount of hydrogen to obtain the hydrogen surplus.

[0008] In one embodiment, the hydrogen charging flow rate and the hydrogen discharging flow rate are respectively obtained by flow meters arranged on the hydrogen pipeline.

[0009] In one embodiment, in step S1, the hydrogen charging process is divided into multiple hydrogen charging sub-processes; in each hydrogen charging sub-process, a first temperature and a first pressure are preset, and when the temperature and pressure of the hydrogen storage container reach the preset first temperature and first pressure, the hydrogen charging sub-process stops, and the hydrogen charging amount of the hydrogen charging sub-process is calculated by the hydrogen charging flow rate and the hydrogen charging time of the hydrogen charging sub-process, until the temperature and pressure of the hydrogen storage container drop to the second temperature and the second pressure, the hydrogen charging sub-process is repeated, and the hydrogen charging amount of each hydrogen charging sub-process is accumulated as the total amount of hydrogen.

[0010] In one embodiment, in step S2, the pressure of the hydrogen storage container and the pressure of the hydrogen using end are detected respectively, the pressure of the hydrogen storage container is defined as the hydrogen decomposition pressure, and the pressure of the hydrogen using end is defined as the hydrogen using pressure. When the hydrogen decomposition pressure is greater than the hydrogen using pressure, the hydrogen storage container is cooled to slow down its hydrogen decomposition rate; when the hydrogen decomposition pressure is less than the hydrogen using pressure, the hydrogen storage container is heated to increase its hydrogen decomposition rate, so that the hydrogen decomposition rate of the hydrogen storage container matches the demand of the hydrogen using end.

[0011] In one embodiment, the hydrogen remaining amount and at least one hydrogen data are displayed on the display panel; the hydrogen data is any one of hydrogen filling flow, hydrogen filling time, total hydrogen amount, hydrogen discharge flow, hydrogen discharge time, and hydrogen usage.

[0012] The technical solution of the present invention also includes: a hydrogen quantity monitoring system, which is used to execute the hydrogen quantity monitoring method described in the claim to monitor the hydrogen quantity, including a hydrogen storage container, a hydrogen using end and a controller, the controller is used to obtain the hydrogen filling flow rate and the hydrogen filling time and calculate the total amount of hydrogen in the hydrogen storage container through the hydrogen filling flow rate and the hydrogen filling time, the controller is also used to obtain the hydrogen degassing flow rate and the hydrogen degassing time and calculate the hydrogen consumption through the hydrogen degassing flow rate and the hydrogen degassing time, the hydrogen degassing flow rate is the flow rate of hydrogen supplied from the hydrogen storage container to the hydrogen using end, the hydrogen degassing time is the time for the hydrogen storage container to supply hydrogen to the hydrogen using end, and the controller is also used to calculate the remaining hydrogen.

[0013] In one embodiment, it also includes a flow meter and a display panel, the flow meter includes a first flow meter for measuring the hydrogen filling flow rate and a second flow meter for measuring the hydrogen degassing flow rate, the controller is electrically connected to the first flow meter and the second flow meter respectively, and the controller is electrically connected to the display panel to display the hydrogen filling flow rate and the hydrogen degassing flow rate in real time on the display panel; the display panel is also used to display the hydrogen remaining amount, and the total amount of hydrogen and / or the hydrogen usage are displayed on the display panel.

[0014] In one embodiment, it also includes a heat exchange system for adjusting the temperature of the hydrogen storage container. During the hydrogen filling process, the heat exchange system is used to supply low-temperature liquid to the hydrogen storage container to reduce the temperature of the hydrogen storage container. The process of the hydrogen storage container supplying hydrogen to the hydrogen-using end is defined as a dehydrogenation process. During the dehydrogenation process, when the pressure of the hydrogen storage container is greater than the pressure at the hydrogen-using end, the heat exchange system is used to supply low-temperature liquid to the hydrogen storage container to reduce the dehydrogenation rate of the hydrogen storage container; when the pressure of the hydrogen storage container is less than the pressure at the hydrogen-using end, the heat exchange system is used to supply high-temperature liquid to the hydrogen storage container to increase the dehydrogenation rate of the hydrogen storage container.

[0015] In one embodiment, a safety device is included, wherein the safety device includes a hydrogen detector, and the hydrogen detector is used to detect whether hydrogen is leaking.

[0016] The beneficial effects of the present invention are as follows: the present invention obtains the total amount of hydrogen and the amount of hydrogen used by monitoring the flow rate during the hydrogen filling process and the hydrogen discharge process, and then subtracts the hydrogen use from the total amount of hydrogen to obtain the hydrogen remainder. Compared with the prior art in which the hydrogen amount (including the total amount of hydrogen, the amount of hydrogen used and the hydrogen remainder) is determined by hydrogen pressure, this method of calculating and accumulating by flow rate and time can more accurately obtain the hydrogen amount data; the hydrogen amount data is displayed in real time on the display panel to form a visualization of the relevant data. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the connection of the hydrogen quantity monitoring system according to the embodiment of the present invention.

[0018] Figure 2 Schematic diagram of total hydrogen amount calculation according to an embodiment of the present invention.

[0019] Figure 3 Schematic diagram of hydrogen consumption calculation according to an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the working state of the safety device according to the embodiment of the present invention.

[0021] Among them: 1 hydrogen storage container, 10 solid hydrogen storage device, 2 hydrogen end, 3 controller, 4 gas path system, 51 hydrogen filling heat exchange system, 52 hydrogen discharge heat exchange system, 6 safety devices. DETAILED DESCRIPTION

[0022] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] The present invention discloses a method for monitoring hydrogen quantity, comprising the following steps:

[0024] S1: Obtain the hydrogen filling flow rate and hydrogen filling time during the hydrogen filling process, calculate the amount of hydrogen filled into the hydrogen storage container during the hydrogen filling process, and obtain the total amount of hydrogen;

[0025] S2: Obtain the hydrogen discharge flow rate and hydrogen discharge time of the hydrogen storage container supplying hydrogen to the hydrogen user end, calculate the cumulative amount of hydrogen supplied by the hydrogen storage container to the outside, and obtain the hydrogen consumption;

[0026] S3: Subtract the amount of hydrogen used from the total amount of hydrogen to obtain the hydrogen surplus.

[0027] Among them, the process of supplying hydrogen from the hydrogen storage container to the hydrogen-using end is defined as the hydrogen release process.

[0028] The present invention obtains the total amount of hydrogen and the amount of hydrogen used by monitoring the flow rate during the hydrogen filling process and the hydrogen discharge process, and then subtracts the amount of hydrogen used from the total amount of hydrogen to obtain the remaining amount of hydrogen. Compared with the prior art in which the amount of hydrogen (including the total amount of hydrogen, the amount of hydrogen used and the remaining amount of hydrogen) is determined by hydrogen pressure, this method of calculating and accumulating by flow rate and time can obtain hydrogen amount data more accurately. After obtaining the corresponding hydrogen amount data, the user can perform corresponding work based on these data, such as: planning the time for the next hydrogen filling, judging whether the amount of hydrogen used at the hydrogen end is reasonable, and whether the total amount of hydrogen during hydrogen filling reaches the theoretical hydrogen storage capacity of the hydrogen storage container.

[0029] See also Figures 1 to 3 As shown, the hydrogen quantity monitoring method is used for a hydrogen quantity monitoring system, which includes a hydrogen storage container 1, a hydrogen using end 2 and a controller 3. The controller 3 is used to obtain the hydrogen filling flow rate and the hydrogen filling time and calculate the total amount of hydrogen in the hydrogen storage container 1 through the hydrogen filling flow rate and the hydrogen filling time. The controller 3 is also used to obtain the hydrogen degassing flow rate and the hydrogen degassing time and calculate the hydrogen consumption through the hydrogen degassing flow rate and the hydrogen degassing time. The hydrogen degassing flow rate is the flow rate of hydrogen supplied from the hydrogen storage container 1 to the hydrogen using end 1, and the hydrogen degassing time is the time for the hydrogen storage container 1 to supply hydrogen to the hydrogen using end 2. The controller 3 is also used to calculate the hydrogen surplus, specifically, the hydrogen surplus is obtained by subtracting the hydrogen consumption from the total hydrogen.

[0030] In this embodiment, the hydrogen storage container 1 is a container of a solid-state hydrogen storage device 10, which is filled with a hydrogen storage alloy. Solid-state hydrogen storage is achieved through the change of the hydrogen storage alloy and hydrogen. The hydrogen-using end 2 is a hydrogen fuel cell, which is used to convert the chemical energy of hydrogen into electrical energy and thermal energy, thereby outputting electricity and heat to the outside. The solid-state hydrogen storage device 10 and the hydrogen fuel cell cooperate to form a cogeneration system. Both solid-state hydrogen storage devices and hydrogen fuel cells are prior art and will not be described in detail here. In other embodiments, the hydrogen storage container 1 can also be a container for high-pressure gaseous hydrogen storage or liquid hydrogen storage. In addition, in other embodiments, the hydrogen-using end 2 can also be other devices, such as hydrogen energy vehicles.

[0031] The hydrogen filling process refers to the process in which hydrogen is filled into the hydrogen storage container 1 through a hydrogen pipeline. A first flowmeter is provided in the hydrogen pipeline. The first flowmeter can monitor the hydrogen filling flow in real time and send it to the controller 3. The controller 3 calculates the total amount of hydrogen filled into the hydrogen storage container 1 through the hydrogen filling flow and the corresponding hydrogen filling time. During the hydrogen discharge process, the solid-state hydrogen storage device 10 supplies hydrogen to the hydrogen fuel cell (i.e., the hydrogen consumption end 2) through the gas path system 4. The gas path system 4 includes a hydrogen pipeline connecting the hydrogen storage container 1 and the hydrogen fuel cell and a second flowmeter arranged in the hydrogen pipeline. The second flowmeter can monitor the hydrogen discharge flow and send it to the controller 3. The controller 3 calculates the amount of hydrogen supplied from the hydrogen storage container 1 to the hydrogen fuel cell through the hydrogen discharge flow and the corresponding hydrogen discharge time.

[0032] See also Figure 2 As shown, in step S1, the hydrogen filling process is divided into multiple hydrogen filling sub-processes; in each hydrogen filling sub-process, a first temperature and a first pressure are preset, and when the temperature and pressure of the hydrogen storage container 1 reach the preset first temperature and first pressure, the hydrogen filling sub-process stops, and the hydrogen filling amount of the hydrogen filling sub-process is calculated by the hydrogen filling flow rate and the hydrogen filling time of the hydrogen filling sub-process, until the temperature and pressure of the hydrogen storage container drop to the second temperature and the second pressure, the hydrogen filling sub-process is repeated, and the hydrogen filling amount of each hydrogen filling sub-process is accumulated as the total amount of hydrogen. The solid-state hydrogen storage device 10 is provided with a temperature sensor and a pressure sensor to monitor the real-time temperature and real-time pressure of the hydrogen storage container 1. When charging hydrogen, as the duration of hydrogen charging increases, the hydrogen storage alloy releases heat when absorbing hydrogen, so the temperature in the hydrogen storage container 1 will rise. The higher the temperature, the slower the speed at which the hydrogen storage alloy absorbs hydrogen. When the hydrogen charging flow rate remains unchanged, the pressure in the hydrogen storage container 1 will also rise. When the first temperature and the first pressure set in the hydrogen charging sub-process are reached, the controller 3 sends a stop signal to stop the hydrogen charging sub-process, and waits for the hydrogen charging heat exchange system 51 to cool the hydrogen storage container 1 until the set second Temperature, during the process of cooling the hydrogen storage container 1, the hydrogen storage alloy continues to absorb the hydrogen in the hydrogen storage container 1, so that the pressure of the hydrogen storage container 1 will also decrease. When the temperature and pressure of the hydrogen storage container 1 respectively drop to no more than the second temperature and the second pressure, the next hydrogen charging sub-process is carried out, that is, hydrogen charging is continued. In this way, hydrogen charging is repeated until it is infinitely close to the theoretically calculated hydrogen storage capacity of the hydrogen storage container 1. The hydrogen charging process is completed, and the first flow meter records the cumulative hydrogen charging amount throughout the process and transmits it to the controller 3. The controller accumulates the flow rate. After the hydrogen charging is completed, the controller 3 accumulates and calculates and displays the total amount of hydrogen on the display panel.

[0033] Due to the influence of temperature during the hydrogen filling process, the hydrogen storage alloy cannot maintain rapid hydrogen absorption, resulting in an increase in the pressure of the hydrogen storage container 1. If the pressure is used alone to determine whether the hydrogen storage container 1 has been fully filled, the actual amount of hydrogen filled will be much less than the theoretical amount of hydrogen stored, which not only wastes the volume of the hydrogen storage container 1, but also increases the frequency of hydrogen filling, causing inconvenience in using hydrogen. The present invention measures the actual amount of hydrogen filled by flow rate and time, and divides the hydrogen filling process into multiple hydrogen filling sub-processes according to the characteristics of the hydrogen storage alloy, which can not only maintain the pressure of the hydrogen storage container 1 within a relatively low range to ensure the safety of the hydrogen storage container 1, but also make full use of the volume of the hydrogen storage container 1, reduce the frequency of hydrogen filling, and improve the convenience of using hydrogen.

[0034] See also Figure 1 As shown, in step S2, the pressure of the hydrogen storage container 1 and the pressure of the hydrogen end 2 are detected by pressure sensors respectively, and the pressure of the hydrogen storage container 1 is defined as the hydrogen release pressure, and the pressure of the hydrogen end 2 is defined as the hydrogen use pressure. When the hydrogen release pressure is greater than the hydrogen use pressure, the hydrogen storage container 1 is cooled to slow down its hydrogen release rate; when the hydrogen release pressure is less than the hydrogen use pressure, the hydrogen storage container 1 is heated to increase its hydrogen release rate, so that the hydrogen release rate of the hydrogen storage container 1 matches the demand of the hydrogen end 2. If the hydrogen release rate is too fast, a large amount of hydrogen will accumulate in the hydrogen storage container 1, the hydrogen end 2 and the hydrogen pipeline between the two, resulting in an increase in hydrogen pressure and a danger; if the hydrogen release rate is insufficient, the amount of hydrogen is difficult to meet the demand of the hydrogen end 2, which will cause the hydrogen fuel cell power generation to form the hydrogen end 2 to decrease. Therefore, a hydrogen charging heat exchange system 51 is used to supply low-temperature liquid to the hydrogen storage container 1, or a hydrogen release heat exchange system 52 is used to supply high-temperature liquid to the hydrogen storage container 1. Among them, the hydrogen charging heat exchange system 51 and the hydrogen release heat exchange system 52 are collectively referred to as a heat exchange system. The temperatures of high-temperature liquid and low-temperature liquid are relative. In this embodiment, high-temperature liquid refers to hot water, and low-temperature liquid refers to cold water or unheated water at room temperature. The water temperature can be set with reference to the temperature required for hydrogen absorption and desorption by solid-state hydrogen storage technology, which is a conventional technology in the field.

[0035] See also Figure 3 As shown, during the hydrogen release process, the second flow meter provided in the gas circuit system 4 can monitor the hydrogen release flow in real time, and the second flow meter sends the hydrogen release flow to the controller 3, and the controller 3 calculates the hydrogen release amount according to the hydrogen release flow and the hydrogen release time, and accumulates the hydrogen release amount to obtain the hydrogen consumption. The controller 3 also displays the hydrogen release flow in real time on the display panel to form a visualization of the hydrogen release flow.

[0036] In this embodiment, the display panel displays the total amount of hydrogen, hydrogen discharge flow, hydrogen discharge pressure, hydrogen consumption pressure, hydrogen consumption, and hydrogen remaining amount, but is not limited thereto. The display panel mainly displays the hydrogen remaining amount so that people can accurately plan the time for hydrogen filling. Therefore, in other embodiments, the display panel may only display the hydrogen remaining amount, while the hydrogen filling flow, hydrogen filling time, total amount of hydrogen, hydrogen discharge flow, hydrogen discharge time, hydrogen discharge pressure, hydrogen consumption pressure, and hydrogen consumption may display one or more as needed.

[0037] See also Figure 1 and Figure 4 As shown, the hydrogen amount monitoring system of this embodiment includes a safety device 6, which includes a hydrogen detector. The hydrogen detector is used to detect whether hydrogen is leaking. In addition, a plurality of pressure sensors for detecting the pressure of the hydrogen storage container 1 and the hydrogen end 2 also form a part of the safety device. The hydrogen detector and the pressure sensor are electrically connected to the controller, respectively. Figure 4 As shown, when hydrogen leakage or excessive pressure is detected at any position in the hydrogen storage container 1, the hydrogen end 2 or the gas path system 4, the hydrogen storage container 1, the hydrogen end 2 and the related valves therebetween are stopped, the flow of hydrogen is cut off, and the cogeneration system is stopped; when the pressure is too high, in addition to cutting off the flow of hydrogen, it is also necessary to start the pressure relief device to reduce the hydrogen pressure.

[0038] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that the remaining undescribed portions are prior art, and that various changes made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims shall fall within the scope of protection of the present invention.

Claims

1. A method for monitoring hydrogen volume, characterized in that: The following steps are involved: S1: Obtain the hydrogen filling flow rate and hydrogen filling time during the hydrogen filling process, calculate the amount of hydrogen filled into the hydrogen storage container during the hydrogen filling process, and obtain the total amount of hydrogen; S2: Obtain the hydrogen discharge flow rate and hydrogen discharge time of the hydrogen storage container to the hydrogen user end, calculate the cumulative amount of hydrogen supplied by the hydrogen storage container to the outside, and obtain the hydrogen consumption; S3: Subtract the amount of hydrogen used from the total amount of hydrogen to obtain the hydrogen balance.

2. A method for monitoring hydrogen amount according to claim 1, characterized in that: The hydrogen charging flow rate and the hydrogen discharging flow rate are respectively obtained by flow meters arranged on the hydrogen pipeline.

3. A method for monitoring hydrogen amount according to claim 1, characterized in that: In step S1, the hydrogen charging process is divided into multiple hydrogen charging sub-processes; in each hydrogen charging sub-process, a first temperature and a first pressure are preset. When the temperature and pressure of the hydrogen storage container reach the preset first temperature and first pressure, the hydrogen charging sub-process is stopped, and the hydrogen charging amount of the hydrogen charging sub-process is calculated based on the hydrogen charging flow and hydrogen charging time of the hydrogen charging sub-process. When the temperature and pressure of the hydrogen storage container drop to the second temperature and second pressure, the hydrogen charging sub-process is repeated, and the hydrogen charging amount of each hydrogen charging sub-process is accumulated as the total hydrogen amount.

4. A method for monitoring hydrogen amount according to claim 1, characterized in that: In step S2, the pressure of the hydrogen storage container and the pressure of the hydrogen-using end are detected respectively, the pressure of the hydrogen storage container is defined as the hydrogen degassing pressure, and the pressure of the hydrogen-using end is defined as the hydrogen-using pressure. When the hydrogen degassing pressure is greater than the hydrogen-using pressure, the hydrogen storage container is cooled to slow down its hydrogen degassing rate; when the hydrogen degassing pressure is less than the hydrogen-using pressure, the hydrogen storage container is heated to increase its hydrogen degassing rate, so that the hydrogen degassing rate of the hydrogen storage container matches the demand of the hydrogen-using end.

5. A method for monitoring hydrogen amount according to claim 1, characterized in that: The remaining hydrogen amount and at least one hydrogen data are displayed on the display panel; the hydrogen data is any one of hydrogen filling flow, hydrogen filling time, total hydrogen amount, hydrogen discharge flow, hydrogen discharge time, and hydrogen usage.

6. A hydrogen quantity monitoring system, characterized in that: The hydrogen quantity monitoring system is used to monitor the hydrogen quantity by executing the hydrogen quantity monitoring method described in any one of claims 1 to 5, and includes a hydrogen storage container, a hydrogen-using end, and a controller. The controller is used to obtain a hydrogen filling flow rate and a hydrogen filling time and calculate the total amount of hydrogen in the hydrogen storage container based on the hydrogen filling flow rate and the hydrogen filling time. The controller is also used to obtain a hydrogen discharge flow rate and a hydrogen discharge time and calculate the hydrogen consumption based on the hydrogen discharge flow rate and the hydrogen discharge time. The hydrogen discharge flow rate is the flow rate of hydrogen supplied from the hydrogen storage container to the hydrogen-using end, and the hydrogen discharge time is the time for the hydrogen storage container to supply hydrogen to the hydrogen-using end. The controller is also used to calculate the remaining hydrogen.

7. A hydrogen amount monitoring system according to claim 6, characterized in that: It also includes a flow meter and a display panel, the flow meter includes a first flow meter for measuring the hydrogen filling flow rate and a second flow meter for measuring the hydrogen degassing flow rate, the controller is electrically connected to the first flow meter and the second flow meter respectively, and the controller is electrically connected to the display panel to display the hydrogen filling flow rate and the hydrogen degassing flow rate in real time on the display panel; the display panel is also used to display the hydrogen remaining amount, and the total amount of hydrogen and / or the hydrogen usage are displayed on the display panel.

8. A hydrogen amount monitoring system according to claim 6, characterized in that: It also includes a heat exchange system for regulating the temperature of the hydrogen storage container. During the hydrogen filling process, the heat exchange system is used to supply low-temperature liquid to the hydrogen storage container to reduce the temperature of the hydrogen storage container. The process of the hydrogen storage container supplying hydrogen to the hydrogen-using end is defined as a hydrogen discharge process. During the hydrogen discharge process, when the pressure of the hydrogen storage container is greater than the pressure of the hydrogen-using end, the heat exchange system is used to supply low-temperature liquid to the hydrogen storage container to reduce the hydrogen discharge rate of the hydrogen storage container. When the pressure of the hydrogen storage container is less than the pressure of the hydrogen-using end, the heat exchange system is used to supply high-temperature liquid to the hydrogen storage container to increase the hydrogen discharge rate of the hydrogen storage container.

9. A hydrogen amount monitoring system according to claim 6, characterized in that: A safety device is included, which includes a hydrogen detector for detecting whether hydrogen is leaking.

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