Hydrogen production and charging integrated system and control method

Abstract

The invention provides a hydrogen production and charging integrated system and a control method, the hydrogen production and charging integrated system comprises a hydrogen production module, a hydrogen storage module and a control module, when the control module enters an idle mode, the hydrogen production module is controlled to stop hydrogen production, and when the pipeline pressure is larger than a closing threshold value, the control module opens an exhaust valve to exhaust airflow in a pipeline; when the control module enters the hydrogen charging mode, the hydrogen production module is controlled to be started and a hydrogen charging valve is opened, so that hydrogen prepared by the hydrogen production module enters the hydrogen storage module, and when the pipeline pressure is greater than a safety threshold value or the hydrogen storage content is greater than a hydrogen storage threshold value, the control module enters an idle mode; when the control module enters the hydrogen absorption mode, the control module controls the hydrogen production module to start and open a hydrogen absorption valve, so that hydrogen prepared by the hydrogen production module enters the external environment, and when the pipeline pressure is greater than a hydrogen absorption threshold value, the control module enters an idle mode. After the scheme is adopted, the working mode of the hydrogen production and charging integrated system can be automatically adjusted, the pipeline pressure is monitored, and exhaust and pressure relief are carried out in time.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen production equipment, and in particular to an integrated hydrogen production and filling system and a control method for the integrated hydrogen production and filling system. Background Art

[0002] Against the backdrop of global warming and energy depletion, hydrogen is being promoted and used by industries such as the automotive industry because it is green and environmentally friendly, relatively simple to produce, and available in large quantities. Hydrogen currently used is usually stored in hydrogen cylinders. Due to the limited volume of hydrogen cylinders and the greater safety issues associated with them, the on-the-spot production characteristics of hydrogen generators ensure safety, while also saving consumption in hydrogen storage and transportation, and reducing costs.

[0003] During the operation of the hydrogen generator, various faults may occur, which usually require manual intervention to control the opening and closing of corresponding hardware units and valves for regulation, and cannot be discovered and handled in time. Summary of the invention

[0004] In order to overcome the above technical defects, the object of the present invention is to provide an integrated hydrogen production and filling system and a control method.

[0005] The present invention discloses an integrated hydrogen production and charging system, comprising a hydrogen production module, a hydrogen storage module, and a control module. The hydrogen production module produces hydrogen through an electrolysis unit, and the hydrogen storage module is used to store the hydrogen produced by the hydrogen production module. A pipeline is connected between the hydrogen production module and the hydrogen storage module, and a hydrogen charging valve is provided in the pipeline to control the connection or isolation of the pipeline.

[0006] An exhaust valve is provided between the hydrogen production module and the external environment, for controlling the connection or isolation between the hydrogen production module and the external environment;

[0007] When the control module enters the idle mode, the control module controls the hydrogen production module to stop producing hydrogen, controls the hydrogen charging valve, the hydrogen absorption valve and the exhaust valve to close, and obtains the pipeline pressure of the pipeline. When the pipeline pressure is greater than the closing threshold, the control module opens the exhaust valve to discharge the airflow in the pipeline;

[0008] When the control module enters the hydrogen charging mode, it controls the hydrogen production module to start and open the hydrogen charging valve, so that the hydrogen prepared by the hydrogen production module enters the hydrogen storage module, and obtains the pipeline pressure and the hydrogen storage content of the hydrogen storage module. When the pipeline pressure is greater than the safety threshold or the hydrogen storage content is greater than the hydrogen storage threshold, the control module exits the hydrogen charging mode and enters the idle mode.

[0009] Preferably, the hydrogen production module further includes a hydrogen absorption valve for controlling the connection or isolation between the hydrogen production module and the external environment;

[0010] When the control module enters the idle mode, the hydrogen absorption valve is controlled to be closed;

[0011] When the control module enters the hydrogen absorption mode, it controls the hydrogen production module to start and open the hydrogen absorption valve, so that the hydrogen prepared by the hydrogen production module enters the external environment, and obtains the pipeline pressure. When the pipeline pressure is greater than the hydrogen absorption threshold, the control module exits the hydrogen absorption mode and enters the idle mode.

[0012] Preferably, when the control module enters the idle mode, it further includes:

[0013] The control module controls the hydrogen production module to stop hydrogen production and obtains the pipeline pressure. When the pipeline pressure is greater than the closing threshold, the control module opens the exhaust valve to exhaust the airflow in the pipeline and starts the first timer;

[0014] If the pipeline pressure drops below the closing threshold before the first timer finishes timing, the control module closes the exhaust valve and starts timing the second timer;

[0015] If the pipeline pressure is greater than the closing threshold after the first timer finishes timing, the control module further obtains the current timing times of the first timer, and when the current timing times of the first timer is not greater than the first repetition threshold, the control module restarts the timing of the first timer;

[0016] When the current timing times of the first timer is greater than the first repetition threshold, the control module enables the second timer to start timing;

[0017] When the pipeline pressure is less than the closing threshold, the control module closes the exhaust valve and starts timing the second timer;

[0018] When the second timer finishes timing, the control module clears the timing times of the first timer.

[0019] Preferably, when the control module enters the hydrogen charging mode, it also includes:

[0020] The control module controls the hydrogen production module to start and open the hydrogen filling valve, so that the hydrogen produced by the hydrogen production module enters the hydrogen storage module, and the third timer starts timing;

[0021] The control module obtains the pipeline pressure and the hydrogen storage content of the hydrogen storage module, and if the pipeline pressure is not less than the hydrogen charging threshold before the third timer finishes timing, the third timer stops timing and resets;

[0022] If the pipeline pressure is less than the hydrogen charging threshold after the third timer finishes timing, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode;

[0023] When the pipeline pressure is greater than a safety threshold, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode;

[0024] When the pipeline pressure is not greater than the safety threshold and greater than the limit threshold, the control module controls the hydrogen production module to stop hydrogen production and starts timing of the fourth timer. After the fourth timer finishes timing, the control module exits the hydrogen charging mode and enters the idle mode.

[0025] When the pipeline pressure is not greater than the limiting threshold and less than the restarting threshold, the control module restarts the hydrogen production module;

[0026] When the pipeline pressure is less than the limiting threshold and not less than the restart threshold, the control module controls the hydrogen production module to continue producing hydrogen until the hydrogen storage content is greater than the hydrogen storage threshold, and the control module exits the hydrogen charging mode and enters the idle mode.

[0027] Preferably, the control module opens the hydrogen filling valve and further includes:

[0028] The control module controls the hydrogen production module to start and obtain the pipeline pressure, so that the fifth timer starts timing;

[0029] If the pipeline pressure is not greater than the exhaust threshold after the fifth timer finishes timing, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode;

[0030] If the pipeline pressure is greater than the exhaust threshold before the fifth timer finishes timing, the control module opens the exhaust valve to exhaust the airflow in the pipeline, and closes the fifth timer to start timing the sixth timer;

[0031] If the pipeline pressure is not less than the exhaust stop threshold after the sixth timer finishes timing, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode;

[0032] If the pipeline pressure is less than the exhaust stop threshold before the sixth timer finishes timing, the control module closes the exhaust valve and restarts timing of the fifth timer;

[0033] The control module further obtains the current timing number of the fifth timer. When the current timing number of the fifth timer is greater than the second repetition threshold, the control module opens the hydrogen filling valve to allow the hydrogen prepared by the hydrogen production module to enter the hydrogen storage module.

[0034] Preferably, when the pipeline pressure is greater than a safety threshold, the control module exits the hydrogen charging mode, further comprising:

[0035] When the pipeline pressure is greater than the safety threshold, the control module controls the power supply unit in the hydrogen production module to shut down, so that the electrolysis unit stops producing hydrogen, and obtains the hydrogen storage content;

[0036] When the hydrogen storage content is not greater than the hydrogen storage threshold, the control module controls the refrigeration unit in the hydrogen storage device to start, so that the gas pressure of the hydrogen storage device is reduced to further store the hydrogen prepared by the hydrogen production module;

[0037] When the hydrogen storage content is greater than the hydrogen storage threshold, the control module opens the exhaust valve to exhaust the airflow in the pipeline.

[0038] Preferably, the control module controls the power supply unit in the hydrogen production module to shut down, and further includes:

[0039] When the pipeline pressure is greater than the safety threshold, the control module obtains the current operating state of the pressure sensor in the pipeline;

[0040] When the pressure sensor fails, the control module controls the pressure switch in the hydrogen production module to shut down the power supply unit.

[0041] Preferably, the control module controls the power supply unit in the hydrogen production module to shut down, and further includes:

[0042] When the power supply unit fails, the control module opens the exhaust valve to exhaust the air flow in the pipeline.

[0043] Preferably, when the pipeline pressure is greater than a safety threshold, the control module exits the hydrogen charging mode, and further includes:

[0044] The hydrogen storage device is provided with a safety valve. When the pipeline pressure is greater than a maximum safety threshold, the control module opens the safety valve to relieve the pressure of the hydrogen storage device, wherein the maximum safety threshold is greater than the safety threshold.

[0045] Preferably, when the control module enters the hydrogen absorption mode, it also includes:

[0046] The control module controls the hydrogen production module to start and open the hydrogen absorption valve, and close the hydrogen charging valve and the exhaust valve;

[0047] The control module obtains the pipeline pressure and starts the seventh timer to count. If the pipeline pressure is greater than the hydrogen absorption threshold before the seventh timer finishes counting, the control module issues a fault notification and exits the hydrogen absorption mode and enters the idle mode.

[0048] After the seventh timer finishes timing, the control module controls the hydrogen production module to stop hydrogen production and starts timing the eighth timer;

[0049] After the eighth timer finishes timing, the control module controls the hydrogen production module to start, and causes the seventh timer to restart timing.

[0050] The present invention also discloses a control method for a hydrogen production and filling integrated system, which is used for the hydrogen production and filling integrated system as described above, and comprises the following steps:

[0051] When entering the idle mode, the hydrogen production module is controlled to stop producing hydrogen, the hydrogen charging valve, the hydrogen absorption valve and the exhaust valve are controlled to be closed, and the pipeline pressure of the pipeline is obtained. When the pipeline pressure is greater than the closing threshold, the control module opens the exhaust valve to discharge the airflow in the pipeline;

[0052] When entering the hydrogen charging mode, the hydrogen production module is controlled to start and the hydrogen charging valve is opened, so that the hydrogen prepared by the hydrogen production module enters the hydrogen storage module, and the pipeline pressure and the hydrogen storage content of the hydrogen storage module are obtained. When the pipeline pressure is greater than the safety threshold or the hydrogen storage content is greater than the hydrogen storage threshold, the hydrogen charging mode is exited and the idle mode is entered:

[0053] When entering the hydrogen absorption mode, the hydrogen production module is controlled to start and the hydrogen absorption valve is opened, so that the hydrogen prepared by the hydrogen production module enters the external environment, and the pipeline pressure is obtained. When the pipeline pressure is greater than the hydrogen absorption threshold, the hydrogen absorption mode is exited and the idle mode is entered.

[0054] Compared with the prior art, the above technical solution has the following beneficial effects: monitoring pipeline pressure, automatically adjusting the hydrogen production mode, hydrogen filling mode and hydrogen absorption mode of the integrated hydrogen production and filling system, and timely detecting and handling faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A schematic diagram of a control module disclosed in the present invention entering an idle mode;

[0056] Figure 2 It is a schematic diagram of the control module disclosed in the present invention entering the hydrogen charging mode;

[0057] Figure 3 It is a schematic diagram of the control module disclosed in the present invention entering the hydrogen absorption mode. DETAILED DESCRIPTION

[0058] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0059] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0060] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0061] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0062] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0063] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0064] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings. Therefore, "module" and "component" can be used interchangeably.

[0065] like Figure 1 to Figure 3 As shown, the present invention discloses an integrated hydrogen production and charging system, including a hydrogen production module, a hydrogen storage module, and a control module. The hydrogen production module produces hydrogen through an electrolysis unit, and the hydrogen storage module is used to store the hydrogen produced by the hydrogen production module. A pipeline is connected between the hydrogen production module and the hydrogen storage module, and a hydrogen charging valve is provided in the pipeline to control the connection or isolation of the pipeline; a hydrogen absorption valve and an exhaust valve are provided between the hydrogen production module and the external environment to control the connection or isolation between the hydrogen production module and the external environment. The hydrogen charging module is used to control the hydrogen charging device to automatically charge the hydrogen storage device with hydrogen.

[0066] The control module has three working modes, including idle mode, hydrogen charging mode, and hydrogen bar mode, which can control the operation of the hydrogen production module and hydrogen charging module in the three working modes respectively. The control module needs to monitor the basic conditions such as the power supply unit of the hydrogen production module, the working current and working voltage of the electrolysis unit, the pipeline pressure, the hydrogen concentration in the chassis, the water quality, the water level, the gas cylinder temperature, and the ambient temperature in real time to ensure the safety of various peripheral equipment of the hydrogen generator, the safety of hydrogen production and filling, the pressure safety, the temperature safety, etc., and can store and display abnormal data records through the display unit.

[0067] When the control module enters the idle mode, it controls the hydrogen production module to stop producing hydrogen, controls the hydrogen filling valve, hydrogen absorption valve and exhaust valve to close, and obtains the pipeline pressure of the pipeline. When the pipeline pressure is greater than the closing threshold, the control module opens the exhaust valve to discharge the airflow in the pipeline.

[0068] When the control module enters the hydrogen charging mode, it controls the hydrogen production module to start and open the hydrogen charging valve, so that the hydrogen prepared by the hydrogen production module enters the hydrogen storage module, and obtains the pipeline pressure and the hydrogen storage content of the hydrogen storage module. When the pipeline pressure is greater than the safety threshold or the hydrogen storage content is greater than the hydrogen storage threshold, the control module exits the hydrogen charging mode and enters the idle mode.

[0069] When the control module enters the hydrogen absorption mode, the control module starts and opens the hydrogen absorption valve to allow the hydrogen prepared by the hydrogen production module to enter the external environment and obtain the pipeline pressure. When the pipeline pressure is greater than the hydrogen absorption threshold, the control module exits the hydrogen absorption mode and enters the idle mode.

[0070] like Figure 1 As shown, when the control module enters the idle mode, it also includes:

[0071] The control module controls the hydrogen production module to stop hydrogen production and obtains the pipeline pressure. When the pipeline pressure is greater than the closing threshold, it means that the air flow pressure in the pipeline is too high. The control module opens the exhaust valve to discharge the air flow in the pipeline and starts the first timer.

[0072] Specifically, the control module controls the exhaust time of the pipeline by timing the first timer. Before the first timer finishes timing, the pipeline pressure drops below the closing threshold, which means that enough airflow has been exhausted by opening the exhaust valve, solving the problem of excessive airflow pressure in the pipeline. Therefore, the control module closes the exhaust valve and starts timing the second timer.

[0073] If the pipeline pressure is still greater than the closing threshold after the first timer completes timing, it indicates that exhaust needs to continue, and the control module further obtains the current timing count of the first timer. When the current timing count of the first timer is not greater than the first repetition threshold, the control module restarts the timing of the first timer, that is, restarts the exhaust of the exhaust valve.

[0074] When the current timing times of the first timer is greater than the first repetition threshold, the control module enables the second timer to start timing.

[0075] When the line pressure is less than the closing threshold, the control module closes the exhaust valve and starts timing the second timer.

[0076] Specifically, the first repetition threshold and the second timer are used to avoid frequent switching of the first timer. When the second timer completes timing, the control module clears the timing times of the first timer and repeats the above control process of controlling the opening and closing of the exhaust valve according to the pipeline pressure.

[0077] like Figure 2 As shown, when the control module enters the hydrogen charging mode, it also includes:

[0078] The control module controls the hydrogen production module to start and open the hydrogen filling valve, so that the hydrogen prepared by the hydrogen production module enters the hydrogen storage module, and the third timer starts timing.

[0079] The control module obtains the pipeline pressure and the hydrogen storage content of the hydrogen storage module. If the pipeline pressure is not less than the hydrogen charging threshold before the third timer finishes timing, the third timer stops timing and resets. If the pipeline pressure is less than the hydrogen charging threshold after the third timer finishes timing, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode.

[0080] Specifically, the hydrogen filling threshold represents the gas pressure value of normal hydrogen production by the hydrogen production module, and the control module uses the third timer to control the start-up of the hydrogen production module. If the pipeline pressure is not less than the hydrogen filling threshold before the third timer is completed, it means that the hydrogen produced by the current hydrogen production module is sufficient and can enter the hydrogen storage module normally through the pipeline, so the third timer stops timing and resets. If the pipeline pressure is still less than the hydrogen filling threshold after the third timer is completed, it means that the hydrogen produced by the current hydrogen production module is too little and a fault occurs, so the control module issues a fault notification and exits the hydrogen filling mode and enters the idle mode.

[0081] When the pipeline pressure is greater than the safety threshold, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode.

[0082] When the pipeline pressure is not greater than the safety threshold and greater than the limit threshold, the control module controls the hydrogen production module to stop hydrogen production and starts the fourth timer. After the fourth timer finishes timing, the control module exits the hydrogen charging mode and enters the idle mode. It can be understood that although the pipeline pressure is not greater than the safety threshold at this time, it is not necessary to stop the operation of the hydrogen production module and perform exhaust and pressure relief treatments, but the hydrogen produced by the hydrogen production module is relatively large. Long-term hydrogen charging under this pipeline pressure has hidden dangers. Therefore, the control module uses the fourth timer for control, and exits the hydrogen charging mode when the fourth timer finishes timing.

[0083] When the pipeline pressure is not greater than the limiting threshold and less than the restarting threshold, the control module restarts the hydrogen production module. It is understandable that at this time, the pipeline pressure is too low, and the hydrogen production module needs to be restarted, so that the electrolysis unit in the hydrogen production module starts to produce hydrogen, and the fourth timer stops timing.

[0084] When the pipeline pressure is less than the limit threshold and not less than the restart threshold, the control module controls the hydrogen production module to continue to produce hydrogen until the hydrogen storage content is greater than the hydrogen storage threshold, and the control module exits the hydrogen charging mode and enters the idle mode. It can be understood that the safety threshold is greater than the limit threshold, and the limit threshold is greater than the restart threshold. When the pipeline pressure is less than the limit threshold and not less than the restart threshold, the pipeline pressure is in an ideal state. The control module controls the hydrogen production module to continue to produce hydrogen until the hydrogen storage content is greater than the hydrogen storage threshold, and the control module exits the hydrogen charging mode and enters the idle mode.

[0085] like Figure 2 As shown, the control module opens the hydrogen filling valve, and also includes,

[0086] The control module controls the hydrogen production module to start and obtain the pipeline pressure, so that the fifth timer starts timing; if the pipeline pressure is not greater than the exhaust threshold after the fifth timer completes timing, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode; if the pipeline pressure is greater than the exhaust threshold before the fifth timer completes timing, the control module opens the exhaust valve to discharge the airflow in the pipeline, and closes the fifth timer to start the sixth timer. Specifically, after the hydrogen production module is started, the electrolysis unit in it starts water electrolysis to produce hydrogen, and the fifth timer is used to wait for the electrolysis unit to produce water electrolysis hydrogen, which is equivalent to pre-production of hydrogen. Then the prepared hydrogen is passed into the hydrogen storage module. If the pipeline pressure is not greater than the exhaust threshold after the fifth timer completes timing, it means that the electrolysis unit has a fault, so the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode. If the pipeline pressure is greater than the exhaust threshold before the fifth timer completes timing, it means that the current airflow pressure in the pipeline is too large and needs to be exhausted, so the control module opens the exhaust valve to discharge the airflow in the pipeline, closes the fifth timer, and uses the sixth timer to control the exhaust duration.

[0087] If the pipeline pressure is not less than the exhaust stop threshold after the sixth timer is finished, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode; if the pipeline pressure is less than the exhaust stop threshold before the sixth timer is finished, the control module closes the exhaust valve and restarts the fifth timer. The control module further obtains the current timing number of the fifth timer. When the current timing number of the fifth timer is greater than the second repetition threshold, the control module opens the hydrogen charging valve to allow the hydrogen prepared by the hydrogen production module to enter the hydrogen storage module.

[0088] Specifically, the exhaust stop threshold is used to compare with the pipeline pressure after the sixth timer completes the timing, so as to evaluate whether the gas pressure in the pipeline has returned to safety after the exhaust time of the sixth timer. The exhaust stop threshold can be set to be equal to the exhaust threshold, or it can be set to be less than the exhaust threshold to ensure the safe operation of the hydrogen production and filling integrated system. If the pipeline pressure is not less than the exhaust stop threshold after the sixth timer completes the timing, it means that the gas pressure in the pipeline is still too high and a fault occurs, so the control module issues a fault notification and exits the hydrogen filling mode and enters the idle mode. If the pipeline pressure is less than the exhaust stop threshold before the sixth timer completes the timing, it means that the pipeline pressure is effectively controlled by exhausting the exhaust valve, so the control module closes the exhaust valve and restarts the fifth timer. When the current timing of the fifth timer is greater than the second repetition threshold, it means that the pre-hydrogen production is sufficient, and the control module opens the hydrogen filling valve to allow the hydrogen prepared by the hydrogen production module to enter the hydrogen storage module.

[0089] When the pipeline pressure is greater than the safety threshold, the control module exits the hydrogen charging mode, and also includes:

[0090] When the pipeline pressure is greater than the safety threshold, the control module controls the power supply unit in the hydrogen production module to shut down, stops the electrolysis unit from producing hydrogen, and obtains the hydrogen storage content; when the hydrogen storage content is not greater than the hydrogen storage threshold, the control module controls the refrigeration unit in the hydrogen storage device to start, reduces the gas pressure of the hydrogen storage device to further store the hydrogen prepared by the hydrogen production module; when the hydrogen storage content is greater than the hydrogen storage threshold, the control module opens the exhaust valve to discharge the airflow in the pipeline.

[0091] The control module controls the power supply unit in the hydrogen production module to shut down, and also includes:

[0092] When the pipeline pressure is greater than the safety threshold, the control module obtains the current operating status of the pressure sensor in the pipeline. When the pressure sensor fails, the control module controls the pressure switch in the hydrogen production module to shut down the power supply unit.

[0093] When the current operating state of the pressure sensor is valid, it is further obtained whether the power unit is successfully shut down. If the power unit fails to shut down, the pressure transmitter can be used to try to shut down the power unit again. If the power unit still fails to shut down, that is, when the power unit fails, the control module opens the exhaust valve to exhaust the airflow in the pipeline.

[0094] The hydrogen storage device is provided with a safety valve. When the pipeline pressure is greater than the maximum safety threshold, the control module opens the safety valve to relieve the pressure of the hydrogen storage device, wherein the maximum safety threshold is greater than the safety threshold.

[0095] like Figure 3 As shown, when the control module enters the hydrogen absorption mode, it also includes:

[0096] The control module controls the hydrogen production module to start and open the hydrogen absorption valve, and close the hydrogen filling valve and the exhaust valve; the control module obtains the pipeline pressure and starts the seventh timer. If the pipeline pressure is greater than the hydrogen absorption threshold before the seventh timer finishes timing, the control module issues a fault notification and exits the hydrogen absorption mode and enters the idle mode;

[0097] After the seventh timer finishes timing, the control module controls the hydrogen production module to stop hydrogen production and starts timing the eighth timer; after the eighth timer finishes timing, the control module controls the hydrogen production module to start and restarts timing the seventh timer.

[0098] Specifically, the hydrogen absorption mode is to produce hydrogen and release hydrogen to the external environment to provide it to the user. Considering the human body's demand for oxygen, it is necessary to release hydrogen intermittently and cyclically to avoid breathing difficulties for the user. Therefore, the control module uses the seventh timer to time the release of hydrogen and the eighth timer to time the stop of hydrogen production. After the seventh timer completes the timing, the control module controls the hydrogen production module to stop hydrogen production and starts the eighth timer. After the eighth timer completes the timing, the control module controls the hydrogen production module to start and restarts the seventh timer, thereby achieving the effect of intermittent cyclic release of hydrogen. If the pipeline pressure is greater than the hydrogen absorption threshold before the seventh timer completes the timing, it means that there is too much hydrogen in the current pipeline. Continuing the hydrogen absorption mode will cause too much hydrogen to be released to the external environment. Therefore, the control module issues a fault notification and exits the hydrogen absorption mode and enters the idle mode.

[0099] The present invention also discloses a control method for a hydrogen production and filling integrated system, which is used for the hydrogen production and filling integrated system as described above, and comprises the following steps:

[0100] When entering the idle mode, the hydrogen production module is controlled to stop producing hydrogen, the hydrogen filling valve, the hydrogen absorption valve and the exhaust valve are controlled to close, and the pipeline pressure of the pipeline is obtained. When the pipeline pressure is greater than the closing threshold, the control module opens the exhaust valve to discharge the airflow in the pipeline;

[0101] When entering the hydrogen charging mode, the hydrogen production module is controlled to start and the hydrogen charging valve is opened, so that the hydrogen prepared by the hydrogen production module enters the hydrogen storage module, and the pipeline pressure and the hydrogen storage content of the hydrogen storage module are obtained. When the pipeline pressure is greater than the safety threshold or the hydrogen storage content is greater than the hydrogen storage threshold, the hydrogen charging mode is exited and the idle mode is entered;

[0102] When entering the hydrogen absorption mode, the hydrogen production module is controlled to start and the hydrogen absorption valve is opened, so that the hydrogen prepared by the hydrogen production module enters the external environment and obtains the pipeline pressure. When the pipeline pressure is greater than the hydrogen absorption threshold, the hydrogen absorption mode is exited and the idle mode is entered.

[0103] It should be noted that the embodiments of the present invention have better practicability and do not impose any form of limitation on the present invention. Any technician familiar with the field may use the technical content disclosed above to change or modify it into an equivalent effective embodiment. However, any modification or equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A hydrogen production and filling integrated system, characterized in that: It includes a hydrogen production module, a hydrogen storage module, and a control module. The hydrogen production module produces hydrogen through an electrolysis unit. The hydrogen storage module is used to store the hydrogen produced by the hydrogen production module. A pipeline is connected between the hydrogen production module and the hydrogen storage module. A hydrogen charging valve is provided in the pipeline to control the connection or isolation of the pipeline. An exhaust valve is provided between the hydrogen production module and the external environment, for controlling the connection or isolation between the hydrogen production module and the external environment; When the control module enters the idle mode, the control module controls the hydrogen production module to stop producing hydrogen, controls the hydrogen filling valve and the exhaust valve to close, and obtains the pipeline pressure of the pipeline. When the pipeline pressure is greater than the closing threshold, the control module opens the exhaust valve to discharge the airflow in the pipeline; When the control module enters the hydrogen charging mode, it controls the hydrogen production module to start and open the hydrogen charging valve, so that the hydrogen prepared by the hydrogen production module enters the hydrogen storage module, and obtains the pipeline pressure and the hydrogen storage content of the hydrogen storage module. When the pipeline pressure is greater than the safety threshold or the hydrogen storage content is greater than the hydrogen storage threshold, the control module exits the hydrogen charging mode and enters the idle mode.

2. The integrated hydrogen production and filling system according to claim 1, characterized in that: The hydrogen production module also includes a hydrogen absorption valve for controlling the connection or isolation between the hydrogen production module and the external environment; When the control module enters the idle mode, the hydrogen absorption valve is controlled to be closed; When the control module enters the hydrogen absorption mode, it controls the hydrogen production module to start and open the hydrogen absorption valve, so that the hydrogen prepared by the hydrogen production module enters the external environment, and obtains the pipeline pressure. When the pipeline pressure is greater than the hydrogen absorption threshold, the control module exits the hydrogen absorption mode and enters the idle mode.

3. The integrated hydrogen production and filling system according to claim 1, characterized in that: When the control module enters the idle mode, it also includes: The control module controls the hydrogen production module to stop hydrogen production and obtains the pipeline pressure. When the pipeline pressure is greater than the closing threshold, the control module opens the exhaust valve to exhaust the airflow in the pipeline and starts the first timer; If the pipeline pressure drops below the closing threshold before the first timer finishes timing, the control module closes the exhaust valve and starts timing the second timer; If the pipeline pressure is greater than the closing threshold after the first timer finishes timing, the control module further obtains the current timing times of the first timer, and when the current timing times of the first timer is not greater than the first repetition threshold, the control module restarts the timing of the first timer; When the current timing times of the first timer is greater than the first repetition threshold, the control module enables the second timer to start timing; When the pipeline pressure is less than the closing threshold, the control module closes the exhaust valve and starts timing the second timer; When the second timer finishes timing, the control module clears the timing times of the first timer.

4. The integrated hydrogen production and filling system according to claim 1, characterized in that: When the control module enters the hydrogen charging mode, it also includes: The control module controls the hydrogen production module to start and open the hydrogen filling valve, so that the hydrogen prepared by the hydrogen production module enters the hydrogen storage module, and the third timer starts timing; The control module obtains the pipeline pressure and the hydrogen storage content of the hydrogen storage module, and if the pipeline pressure is not less than the hydrogen charging threshold before the third timer finishes timing, the third timer stops timing and resets; If the pipeline pressure is less than the hydrogen charging threshold after the third timer finishes timing, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode; When the pipeline pressure is greater than a safety threshold, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode; When the pipeline pressure is not greater than the safety threshold and greater than the limit threshold, the control module controls the hydrogen production module to stop hydrogen production and starts timing of the fourth timer. After the fourth timer finishes timing, the control module exits the hydrogen charging mode and enters the idle mode. When the pipeline pressure is not greater than the limiting threshold and less than the restarting threshold, the control module restarts the hydrogen production module; When the pipeline pressure is less than the limiting threshold and not less than the restart threshold, the control module controls the hydrogen production module to continue producing hydrogen until the hydrogen storage content is greater than the hydrogen storage threshold, and the control module exits the hydrogen charging mode and enters the idle mode.

5. The integrated hydrogen production and filling system according to claim 4, characterized in that: The control module opens the hydrogen filling valve, and further includes: The control module controls the hydrogen production module to start and obtain the pipeline pressure, so that the fifth timer starts timing; if the pipeline pressure is not greater than the exhaust threshold after the fifth timer finishes timing, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode; If the pipeline pressure is greater than the exhaust threshold before the fifth timer finishes timing, the control module opens the exhaust valve to exhaust the airflow in the pipeline, and closes the fifth timer to start timing the sixth timer; If the pipeline pressure is not less than the exhaust stop threshold after the sixth timer finishes timing, the control module issues a fault notification and exits the hydrogen charging mode and enters the idle mode; If the pipeline pressure is less than the exhaust stop threshold before the sixth timer finishes timing, the control module closes the exhaust valve and restarts timing of the fifth timer; The control module further obtains the current timing number of the fifth timer. When the current timing number of the fifth timer is greater than the second repetition threshold, the control module opens the hydrogen filling valve to allow the hydrogen prepared by the hydrogen production module to enter the hydrogen storage module.

6. The integrated hydrogen production and filling system according to claim 4, characterized in that: When the pipeline pressure is greater than the safety threshold, the control module exits the hydrogen charging mode, further comprising: When the pipeline pressure is greater than the safety threshold, the control module controls the power supply unit in the hydrogen production module to shut down, so that the electrolysis unit stops producing hydrogen, and obtains the hydrogen storage content; When the hydrogen storage content is not greater than the hydrogen storage threshold, the control module controls the refrigeration unit in the hydrogen storage device to start, so that the gas pressure of the hydrogen storage device is reduced to further store the hydrogen prepared by the hydrogen production module; When the hydrogen storage content is greater than the hydrogen storage threshold, the control module opens the exhaust valve to exhaust the airflow in the pipeline.

7. The integrated hydrogen production and filling system according to claim 6, characterized in that: The control module controls the power supply unit in the hydrogen production module to shut down, and further includes: When the pipeline pressure is greater than the safety threshold, the control module obtains the current operating state of the pressure sensor in the pipeline; When the pressure sensor fails, the control module controls the pressure switch in the hydrogen production module to shut down the power supply unit.

8. The integrated hydrogen production and filling system according to claim 7, characterized in that: The control module controls the power supply unit in the hydrogen production module to shut down, and further includes: When the power supply unit fails, the control module opens the exhaust valve to exhaust the air flow in the pipeline.

9. The integrated hydrogen production and filling system according to claim 6, characterized in that: When the pipeline pressure is greater than the safety threshold, the control module exits the hydrogen charging mode, further comprising: The hydrogen storage device is provided with a safety valve. When the pipeline pressure is greater than a maximum safety threshold, the control module opens the safety valve to relieve the pressure of the hydrogen storage device, wherein the maximum safety threshold is greater than the safety threshold.

10. The integrated hydrogen production and filling system according to claim 2, characterized in that: When the control module enters the hydrogen absorption mode, it also includes: The control module controls the hydrogen production module to start and open the hydrogen absorption valve, and close the hydrogen charging valve and the exhaust valve; The control module obtains the pipeline pressure and starts the seventh timer to count. If the pipeline pressure is greater than the hydrogen absorption threshold before the seventh timer finishes counting, the control module issues a fault notification and exits the hydrogen absorption mode and enters the idle mode. After the seventh timer finishes timing, the control module controls the hydrogen production module to stop hydrogen production and starts timing the eighth timer; After the eighth timer finishes timing, the control module controls the hydrogen production module to start, and causes the seventh timer to restart timing.

11. A control method for a hydrogen production and filling integrated system, characterized in that: The following steps are included: When entering the idle mode, the hydrogen production module is controlled to stop producing hydrogen, the hydrogen charging valve, the hydrogen absorption valve and the exhaust valve are controlled to be closed, and the pipeline pressure of the pipeline is obtained. When the pipeline pressure is greater than the closing threshold, the control module opens the exhaust valve to discharge the airflow in the pipeline; When entering the hydrogen charging mode, the hydrogen production module is controlled to start and the hydrogen charging valve is opened, so that the hydrogen prepared by the hydrogen production module enters the hydrogen storage module, and the pipeline pressure and the hydrogen storage content of the hydrogen storage module are obtained. When the pipeline pressure is greater than the safety threshold or the hydrogen storage content is greater than the hydrogen storage threshold, the hydrogen charging mode is exited and the idle mode is entered; When entering the hydrogen absorption mode, the hydrogen production module is controlled to start and the hydrogen absorption valve is opened, so that the hydrogen prepared by the hydrogen production module enters the external environment, and the pipeline pressure is obtained. When the pipeline pressure is greater than the hydrogen absorption threshold, the hydrogen absorption mode is exited and the idle mode is entered.

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