Hydrogen filling and hydrogen delivery control method and hydrogen energy storage and supply system

Abstract

This invention provides a hydrogen charging and delivery control method and a hydrogen energy storage and supply system. In the hydrogen charging and delivery control method, when a user activates the hydrogen charging mode, the hydrogen charging procedure begins; when a user activates the hydrogen delivery mode, the hydrogen delivery procedure begins. The hydrogen delivery procedure includes the following steps: S11, the control board starts the heating mode of the hot and cold circulation device and opens the hydrogen delivery valve. If the heating mode of the hot and cold circulation device is successfully activated, proceed to S12; otherwise, the hydrogen delivery procedure ends. S12, the control board linearly adjusts the heating power of the hot and cold circulation device every first preset time interval, and the hydrogen storage device stably outputs hydrogen and simultaneously proceeds to S13. When it is detected that the user has exited the hydrogen delivery mode, the hydrogen delivery procedure ends. S13, when it is detected that the hydrogen storage device meets preset conditions, the hydrogen production device is activated, and hydrogen is produced and directly output. This invention can at least solve the problems of high energy consumption and low energy utilization rate of existing hot and cold circulation devices.

Description

Technical Field

[0001] This invention relates to the field of hydrogen energy technology, specifically to a method for controlling hydrogen charging and transportation, and a hydrogen energy storage and supply system. Background Technology

[0002] Hydrogen energy storage systems offer high flexibility, providing not only emergency power for homes but also energy for everyday cooking and heating, significantly improving the convenience and safety of household energy use. In the practical application of hydrogen energy storage systems, ensuring the safety, efficiency, and controllability of the hydrogen filling and transportation processes has always been a key research issue for those skilled in the art.

[0003] Existing hydrogen energy storage and supply systems mostly use solid-state hydrogen storage technology for hydrogen storage. Based on the characteristics of hydrogen charging and discharging in solid-state hydrogen storage, the existing hydrogen charging and transportation control methods often adopt a control scheme of full-power cooling when charging and full-power heating when discharging to ensure that hydrogen is efficiently and safely charged into the solid-state hydrogen storage device and safely and stably released when hydrogen is needed.

[0004] However, existing control schemes still have the following drawbacks:

[0005] 1. The energy consumption of the cold and hot circulation device is high, especially in the heating mode, where the power consumption is high but the energy utilization efficiency is low.

[0006] 2. The hydrogen production unit is only activated to directly produce hydrogen after the hydrogen storage unit is depleted. At that time, there will be fluctuations in the amount of hydrogen transported, which will affect the safe operation of the hydrogen-using equipment. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hydrogen charging and transportation control method and a hydrogen energy storage and supply system, which can at least solve the problems of high energy consumption and low energy utilization rate of the cold and hot cycle device in the prior art, and achieve the purpose of energy conservation and emission reduction.

[0008] To achieve the above and other objectives, the present invention is implemented through the following technical solution: As a first aspect, the present invention proposes a hydrogen charging and hydrogen delivery control method, wherein when a user activates the hydrogen charging mode, a hydrogen charging procedure is initiated; and when a user activates the hydrogen delivery mode, a hydrogen delivery procedure is initiated; wherein the hydrogen delivery procedure includes the following steps:

[0009] S11. Control the main board to start the heating mode of the hot and cold circulation device and open the hydrogen supply valve. If the heating mode of the hot and cold circulation device is successfully started, proceed to S12; otherwise, end the hydrogen supply program.

[0010] S12, the control motherboard linearly adjusts the heating power of the hot and cold circulation device every first preset time interval, the hydrogen storage device stably outputs hydrogen and enters S13 simultaneously; when the user is detected to have exited the hydrogen delivery mode, the hydrogen delivery program ends.

[0011] S13. When the hydrogen storage device is detected to meet the preset conditions, the hydrogen production device is started to produce hydrogen gas for direct output.

[0012] In one embodiment, in step S12, the real-time temperature T in the hot and cold circulation chamber is controlled between a first preset temperature value T1 and a second preset temperature value T2.

[0013] In one embodiment, the step of "the control motherboard linearly adjusting the heating power of the hot and cold circulation device every first preset time interval" specifically includes the following steps: setting a real-time target temperature Ts, T1≤Ts≤T2; calculating the increment of the heating power of the hot and cold circulation device ΔW=k×(Ts-T), where k is a constant.

[0014] In one embodiment, the determination process of "successful activation of the heating mode of the hot and cold circulation device" specifically includes the following steps: determining whether there is solar energy; if so, power is supplied by solar energy; if not, further determining whether the FCS has been successfully activated; if so, the heating mode is determined to have been successfully activated; if not, the heating mode is determined to have failed to activate.

[0015] In one embodiment, satisfying the preset condition means that the gas pressure of the hydrogen storage device is not higher than a first preset gas pressure value, or the gas pressure of the hydrogen storage device is higher than the first preset gas pressure value but the remaining capacity of the hydrogen storage device is not higher than a preset capacity value.

[0016] In one embodiment, in step S13, the hydrogen production device is powered by solar energy; when there is no solar energy, the hydrogen production device fails to start and the hydrogen transportation process is terminated directly.

[0017] In one embodiment, the hydrogen charging procedure specifically includes the following steps:

[0018] S21. The control motherboard starts the cooling mode of the hydrogen production device and the hot and cold circulation device, and enters S22.

[0019] S22. When the hydrogen charging conditions are met, the control board opens the hydrogen charging valve and the first flow meter to charge hydrogen into the hydrogen storage device, and proceeds to S23.

[0020] S23. When the full charge condition is met, exit the hydrogen charging procedure.

[0021] In one embodiment, the hydrogen charging conditions are that the real-time temperature T in the hot and cold circulation chamber drops to a first preset temperature value T1, and the pressure in the hydrogen charging pipeline reaches a second preset pressure value.

[0022] In one embodiment, the full-fill condition is that the hydrogen filling amount calculated by the first flow meter is greater than the sum of the full capacities of all the hydrogen storage devices, or the pressure of the hydrogen storage device is stable at a third preset pressure value, which is greater than the second preset pressure value.

[0023] As a second aspect, the present invention proposes a hydrogen energy storage and supply system, wherein the hydrogen charging and supply control of the hydrogen energy storage and supply system is performed using the hydrogen charging and supply control method described in the first aspect.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The hydrogen charging and transport control method provided by the present invention linearly adjusts the heating power of the hot and cold circulation device every first preset time by controlling the main board. This can ensure the stable output of hydrogen from the hydrogen storage device, reduce the instantaneous energy consumption of the hot and cold circulation device during activation, and intelligently control the heating power in real time according to the temperature. This can maximize the use of heating power and achieve the expected heating effect, improve energy utilization efficiency, and thus achieve the purpose of energy saving and emission reduction.

[0026] 2. This invention sets a real-time target temperature based on the real-time temperature inside the hot and cold circulation chamber, and linearly adjusts the heating power according to the temperature difference between the two, thereby improving the flexibility and accuracy of heating power adjustment and temperature control.

[0027] 3. The heating mode of the cold and hot circulation device of the present invention first considers the use of solar power, and only considers FCS power generation when there is no solar power. This realizes the maximum possible use of solar energy, improves the efficiency of renewable energy utilization, and achieves the purpose of energy conservation and emission reduction.

[0028] 4. This invention starts the hydrogen production device when the hydrogen storage device meets the preset conditions, realizing the control of simultaneous hydrogen production and transportation. That is, under this control method, the system can produce and transport hydrogen at the same time, thereby ensuring that the amount of hydrogen transported during the hydrogen transportation process is stable and without fluctuation, and ensuring the safe operation of hydrogen-using equipment. Attached Figure Description

[0029] Figure 1 The diagram shown is a structural schematic of a hydrogen energy storage and supply system according to the present invention.

[0030] Figure 2 The diagram shown is a schematic flowchart of the hydrogen charging procedure in a hydrogen charging and hydrogen transport control method of the present invention.

[0031] Figure 3 The diagram shown is a flowchart of the hydrogen delivery procedure in a hydrogen charging and delivery control method according to the present invention. Detailed Implementation

[0032] Please see Figures 1-3 The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0033] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0034] In this invention, the serial numbers assigned to components, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "a," "an," or "the," etc., used in this invention do not indicate a quantity limitation, but simply indicate the presence of at least one; "multiple" indicates the presence of two or more. The term "connection," unless otherwise specified, includes both direct and indirect connections. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, encompassing not only the listed elements but also other elements not expressly listed.

[0035] To avoid confusion with the present invention, some technical features known in the art have not been described.

[0036] like Figure 1 As shown, this embodiment provides a hydrogen energy storage and supply system, including an energy management device 10, a control main board 20, a hydrogen production device 30, a hydrogen storage device 40, and a cold and hot circulation device.

[0037] The energy management device 10 is connected to an external solar power generation device and also to a fieldbus control system (FCS) to activate the FCS for power supply when there is no solar energy during the hydrogen transportation process. The energy management device 10 is electrically connected to the control motherboard 20, the hydrogen production device 30, the hydrogen storage device 40, and the hot and cold circulation device to provide power to these devices according to their functional power requirements. The control motherboard 20 provides signal control to the hydrogen production device 30, the hydrogen storage device 40, and the hot and cold circulation device.

[0038] The hydrogen production device 30 (e.g., a PEM electrolyzer) is connected to the hydrogen storage device 40 (e.g., a solid hydrogen storage cylinder) via a hydrogen filling pipeline. The hydrogen filling pipeline is equipped with a hydrogen filling valve to control the on / off state, a first flow meter 71 to calculate the hydrogen filling volume, and a pressure sensor 81 to monitor the gas pressure in the hydrogen filling pipeline. Simultaneously, the hydrogen storage device 40 is connected to the hydrogen-using device A via a hydrogen delivery pipeline. The hydrogen delivery pipeline is equipped with a hydrogen delivery valve to control the on / off state of the hydrogen filling pipeline and a second flow meter 72 to calculate the hydrogen delivery volume. In this embodiment, ten hydrogen storage devices 40 are installed. Their cylinder valves can be connected to the hydrogen filling and delivery pipelines via valve arrays 60. Both the hydrogen filling and delivery valves can be integrated onto the cylinder valves, which have functions such as detecting the internal pressure and remaining capacity of the hydrogen storage device 40. The first flow meter 71, the second flow meter 72, the pressure sensor 81, and the bottle valve are all electrically connected to the energy management device 10 and the control main board 20 to provide power and signal control for the first flow meter 71, the second flow meter 72, the pressure sensor 81, and the bottle valve.

[0039] The hydrogen storage device 40 is disposed within the hot and cold circulation chamber 90. This device is used to cool or heat the chamber 90 to improve hydrogen charging and discharging efficiency and ensure that the temperature remains within a reasonable range during the charging and discharging processes. Specifically, the hot and cold circulation device includes a compressor 51, a filter, a capillary tube, a condenser, and a condenser fan disposed outside the chamber 90, and an evaporator, an evaporator fan 52, and a heating element 53 disposed inside the chamber 90. The design of the compressor 51, filter, capillary tube, condenser, evaporator, and evaporator fan 52 is basically consistent with the structure and principle of an air conditioner. After being powered on, they mainly provide air cooling for the hydrogen storage device 40 during hydrogen charging; the specific cooling process will not be described in detail here. The heating element 53, for example, a resistance wire, is wound around the outer periphery of the hydrogen storage device 40 and can be powered to generate heat for electric heating during hydrogen discharging. Furthermore, in order to enhance the heating effect, the evaporator fan 52 can be activated to increase the airflow within the hot and cold circulation chamber 90, so that the hot air is distributed more evenly.

[0040] Furthermore, a temperature sensor 82 is installed inside the hot and cold circulation chamber 90. The temperature sensor is communicatively connected to the hot and cold circulation device through the control motherboard 20 and is used to monitor the real-time temperature T inside the hot and cold circulation chamber 90. The control motherboard 20 is pre-set with a first preset temperature value T1 (e.g., 25°C) and a second preset temperature value T2 (e.g., 30°C) to ensure that the temperature inside the hot and cold circulation chamber 90 is maintained within the preset temperature range during the charging and discharging of the hydrogen storage device 40.

[0041] like Figure 2and Figure 3 As shown, this embodiment provides a hydrogen charging and hydrogen supply control method for controlling the hydrogen charging and hydrogen supply of the hydrogen energy storage and supply system, including a hydrogen charging program and a hydrogen supply program. Specifically, the activation of the hydrogen charging and hydrogen supply programs is controlled by the user. For example, the user can activate the hydrogen charging mode via the hydrogen charging button on the hydrogen energy storage and supply system cabinet, and activate the hydrogen supply mode via the hydrogen supply button; alternatively, a wireless communication module (such as Wi-Fi, Bluetooth, etc.) can be added to the hydrogen energy storage and supply system, thereby enabling the hydrogen charging mode or hydrogen supply mode to be activated via a mobile client APP.

[0042] The hydrogen transport procedure includes the following steps:

[0043] S11. The main board 20 starts the heating element 53 of the hot and cold circulation device and enters the heating mode. It opens the hydrogen supply valve, the second flow meter 72 and the temperature sensor 82. If the heating mode of the hot and cold circulation device is successfully started, it proceeds to S12; otherwise, it closes the heating element 53, the hydrogen supply valve and the second flow meter 72 and ends the hydrogen supply program.

[0044] Specifically, "the heating mode of the hot and cold circulation device is successfully started" means either the solar power supply is successfully started or the FCS power supply is successfully started even without solar power. The specific determination process is as follows: while opening the heating element 53, the hydrogen delivery valve, and the second flow meter 72, it is checked whether there is solar power. If there is, the solar power supply is used; if not, the FCS is started to provide power. If the FCS fails to start, the heating mode of the hot and cold circulation device fails to start, all electrical components are shut down, and the hydrogen delivery program ends.

[0045] S12, the control motherboard 20 linearly adjusts the heating power of the hot and cold circulation device every first preset time (e.g., 10s) to control the real-time temperature T in the hot and cold circulation chamber 90 (detected and fed back in real time by the temperature sensor 82) between the first preset temperature value T1 and the second preset temperature value T2. The hydrogen storage device 40 stably outputs hydrogen and enters S13 simultaneously. When it is detected that the user has exited the hydrogen delivery mode, the hydrogen delivery program ends.

[0046] Specifically, the step of "linearly adjusting the heating power of the hot and cold circulation device every first preset time interval" includes the following steps: setting a real-time target temperature Ts, where T1 ≤ Ts ≤ T2; determining the maximum and minimum power limits of the heating element 53; and calculating the increment of the heating power of the hot and cold circulation device ΔW = k × (Ts - T), where k is an empirical coefficient. In this embodiment, the power is mainly adjusted linearly using an algorithm that calculates a new power setpoint (P control) based on the temperature difference and a preset proportional coefficient. To improve the accuracy and stability of the control, integral control (I control) and derivative control (D control) can also be added to form PID control. Furthermore, the heating power can also be remotely monitored and controlled.

[0047] Furthermore, while the "control motherboard 20 linearly adjusts the heating power of the hot and cold circulation device every first preset time", the evaporator fan 52 can be turned on, thereby maximizing the utilization of heating power and achieving the expected heating effect.

[0048] S13. When the hydrogen storage device 40 is detected to meet the preset conditions, the hydrogen production device 30 is started to produce hydrogen gas for direct output.

[0049] Specifically, meeting the preset conditions means that the gas pressure of the hydrogen storage device 40 is not higher than a first preset gas pressure value (e.g., 20 kPa), or the gas pressure of the hydrogen storage device 40 is higher than the first preset gas pressure value but the remaining capacity of the hydrogen storage device 40 is not higher than a preset capacity value (e.g., 20%). The hydrogen production device 30 is powered by solar energy; when there is no solar energy, the hydrogen production device 30 fails to start and the hydrogen transportation process is directly terminated.

[0050] The hydrogen charging procedure specifically includes the following steps:

[0051] S21, The main control board 20 starts the cooling mode of the hydrogen production unit 30 and the hot and cold circulation unit, the temperature sensor 82 and the pressure sensor 81 are running, and the process enters S22.

[0052] S22. When the hydrogen charging conditions are met, the main control board 20 opens the hydrogen charging valve and the first flow meter 71 to charge hydrogen into the hydrogen storage device 40, and enters S23.

[0053] Specifically, the process for determining whether the hydrogen charging conditions are met is as follows: First, determine whether the detection result of the temperature sensor 82 (i.e., the real-time temperature T in the hot and cold circulation chamber 90) has dropped to the first preset temperature value T1 (e.g., 25°C); if so, further determine whether the detection result of the pressure sensor 81 (i.e., the pressure in the hydrogen charging pipeline) is greater than the second preset pressure value (e.g., 900 kPa); if so, the hydrogen charging conditions are met, the hydrogen charging valve is opened, and hydrogen is charged into the hydrogen storage device 40, while the first flow meter 71 calculates the amount of hydrogen charged.

[0054] S23. When the full charge condition is met, exit the hydrogen charging procedure.

[0055] Specifically, the full-fill condition is that the amount of hydrogen calculated by the first flow meter 71 is greater than the sum of the full capacities of all the hydrogen storage devices 40 (e.g., 2000L; in this embodiment, the hydrogen storage device consists of 10 hydrogen storage cylinders, with each cylinder holding 200L when fully filled), or the pressure of the hydrogen storage device 40 is stable at a third preset pressure value (e.g., 1000kPa), and the third preset pressure value is greater than the second preset pressure value.

[0056] In summary, this invention provides a method for intelligently regulating the heating power of a hot and cold circulation device and a hydrogen storage and power supply system. This system, by configuring temperature sensors within the hot and cold circulation chamber, accurately measures temperature changes inside the chamber and transmits the real-time collected temperature data to the control board. Through pre-set algorithms and logical judgments, it can automatically adjust and optimize the heating power of the hot and cold circulation device. This intelligent regulation method ensures the stable operation of the entire hydrogen energy system while effectively avoiding unnecessary energy loss and improving energy utilization efficiency, thereby achieving the goal of energy conservation and emission reduction.

[0057] Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial applicability. The above embodiments are merely illustrative of the principles and effects of this invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this invention should still be covered by the claims of this invention.

Claims

1. A method for controlling hydrogen charging and transport, characterized in that, When the user activates the hydrogen charging mode, the hydrogen charging procedure begins; when the user activates the hydrogen delivery mode, the hydrogen delivery procedure begins; wherein, the hydrogen delivery procedure includes the following steps: S11. Control the main board to start the heating mode of the hot and cold circulation device and open the hydrogen supply valve. If the heating mode of the hot and cold circulation device is successfully started, proceed to S12; otherwise, end the hydrogen supply program. S12, the control motherboard linearly adjusts the heating power of the hot and cold circulation device every first preset time interval, the hydrogen storage device stably outputs hydrogen and enters S13 simultaneously; when the user is detected to have exited the hydrogen delivery mode, the hydrogen delivery program ends. S13. When the hydrogen storage device is detected to meet the preset conditions, the hydrogen production device is started to produce hydrogen gas for direct output.

2. The hydrogen charging and transport control method according to claim 1, characterized in that, In step S12, the real-time temperature T in the hot and cold circulation chamber is controlled between a first preset temperature value T1 and a second preset temperature value T2.

3. The hydrogen charging and transport control method according to claim 2, characterized in that, The phrase "the control motherboard linearly adjusts the heating power of the hot and cold circulation device every first preset time interval" specifically includes the following steps: Set the real-time target temperature Ts, where T1≤Ts≤T2; Calculate the increment of heating power of the hot and cold cycle device, ΔW = k × (Ts - T), where k is a constant.

4. The hydrogen charging and transport control method according to claim 1, characterized in that, The determination process for "the heating mode of the hot and cold circulation device has been successfully started" specifically includes the following steps: Determine if there is solar power available; if so, power is supplied by solar energy; otherwise, further determine if FCS has been successfully started. If so, the heating mode is considered to have been successfully activated; If not, the heating mode is deemed to have failed to start.

5. The hydrogen charging and transport control method according to claim 1, characterized in that, The preset condition refers to the hydrogen storage device having a pressure not higher than a first preset pressure value, or having a pressure higher than the first preset pressure value but a remaining capacity not higher than a preset capacity value.

6. The hydrogen charging and transport control method according to claim 1, characterized in that, In step S13, the hydrogen production device is powered by solar energy; when there is no solar energy, the hydrogen production device fails to start and the hydrogen transportation process is terminated directly.

7. The hydrogen charging and transport control method according to claim 1, characterized in that, The hydrogen charging process specifically includes the following steps: S21. The control motherboard starts the cooling mode of the hydrogen production device and the hot and cold circulation device, and enters S22. S22. When the hydrogen charging conditions are met, the control board opens the hydrogen charging valve and the first flow meter to charge hydrogen into the hydrogen storage device, and proceeds to S23. S23. When the full charge condition is met, exit the hydrogen charging procedure.

8. The hydrogen charging and transport control method according to claim 7, characterized in that, The hydrogen charging conditions are that the real-time temperature T in the hot and cold circulation chamber drops to a first preset temperature value T1, and the pressure in the hydrogen charging pipeline reaches a second preset pressure value.

9. The hydrogen charging and transport control method according to claim 8, characterized in that, The full-fill condition is that the hydrogen filling amount calculated by the first flow meter is greater than the sum of the full capacities of all the hydrogen storage devices, or the pressure of the hydrogen storage device is stable at a third preset pressure value, which is greater than the second preset pressure value.

10. A hydrogen energy storage and supply system, characterized in that, The hydrogen charging and hydrogen supply system is controlled by the hydrogen charging and hydrogen supply control method as described in claims 1 to 9.

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