Hydrogen photoelectric multi-energy coupling lighting device and control method thereof

Abstract

The invention discloses a hydrogen photoelectric multi-energy coupling lighting device and a control method thereof, and solves the problems of insufficient endurance and low-temperature failure of a street lamp in cloudy and rainy days, the device comprises a control unit, the control unit is connected with an energy system and a lighting unit, the energy system comprises a fuel cell, a solar panel and an energy storage battery, the fuel cell is connected with a solid hydrogen storage tank, the fuel cell is connected with the energy storage cell through the control unit, the solar panel is respectively connected with the energy storage cell and the lighting unit through the control unit, the energy storage cell is connected with the lighting unit, the control unit is connected with an inductor, and the control unit controls the energy storage cell and the lighting unit according to the temperature. The illumination intensity and the electric quantity of the energy storage battery control the charging mode of the lighting unit. Through a three-level energy management optimization strategy and a solid hydrogen storage-built-in structure collaborative design, the hydrogen consumption is reduced, the service life of a fuel cell is prolonged, and the street lamp has the advantages of being not affected by weather, zero in emission and long in endurance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy lighting, and particularly relates to a hydrogen-optical-electric multi-energy coupling lighting device and a control method thereof. BACKGROUND

[0002] Under the global energy transformation and carbon neutralization target, new energy street lamps, as the key nodes of smart cities and zero-carbon infrastructure, are experiencing a leap from single solar technology to multi-energy complementary system. Although traditional solar street lamps have been widely used, their "relying on the sun" characteristics result in a short endurance in rainy days, and the serious decay of lithium batteries in low temperature environments, the short life cycle of 2-4 years and the pollution problems in recycling, which restrict the reliability in high latitude and rainy areas. Therefore, solar energy is currently used as the energy of street lamps, which converts solar energy into electrical energy to achieve lighting effect.

[0003] For example, the patent CN112013360A solar street lamp changes the installation support structure form of the crystalline silicon solar cell, realizes the improvement of the flexibility of the support, and improves the adaptability to different environments by improving the installation angle and the connecting structure of the support in different terrains. However, solar photovoltaic power generation will be affected by the changes of day and night, sunny and cloudy days, and there will be snow and rain in winter under low temperature conditions. The snowflakes falling on the top surface of the solar cell panel will cover the surface, and the rainwater will freeze and cover the surface of the solar cell panel, so that it cannot continuously provide stable current, resulting in insufficient endurance of the street lamp in rainy days, and easy failure in low temperature weather. SUMMARY

[0004] The purpose of the present application is to solve the problem of insufficient endurance of street lamps in rainy days and low temperature failure in the prior art, and to provide a hydrogen-optical-electric multi-energy coupling lighting device and a control method thereof. By using a three-level energy management optimization strategy and a solid-state hydrogen storage-embedded structure collaborative design, the hydrogen consumption is reduced and the service life of the fuel cell is improved, and the street lamp has the advantages of being not affected by weather, zero emission and long endurance.

[0005] In order to achieve the above purpose, the following technical scheme is adopted in the present application: A hydrogen-optical-electric multi-energy coupling lighting device, comprising: a control unit, the control unit is connected with an energy system and a lighting unit, the energy system comprises a fuel cell, a solar panel and an energy storage battery, the fuel cell is connected with a solid-state hydrogen storage tank, the fuel cell is connected with the energy storage battery through the control unit, the solar panel is connected with the energy storage battery and the lighting unit through the control unit respectively, the energy storage battery is connected with the lighting unit, and the control unit is connected with a sensor, the control unit controls the charging mode of the lighting unit according to the temperature, the light intensity and the energy storage battery capacity.

[0006] The hydrogen-photovoltaic multi-energy coupled lighting device provided by this invention mainly includes an energy system, a control unit, and a lighting unit. The control unit has a built-in controller with a multi-energy coupling management algorithm to realize the start-up and shutdown control of the fuel cell, the sensing control of the lighting unit, and the optimization of energy management. Through the energy optimization management strategy, the frequent start-up and shutdown of the fuel cell is avoided, while hydrogen consumption can be reduced by 50% and the fuel cell life can be increased to 20,000 hours. It has significant application prospects in the field of new energy lighting.

[0007] Preferably, the lamp holder includes a modular lamp holder body, which adopts a segmented truss structure and is connected to components via a four-pronged snap-on quick-release interface. The solid hydrogen storage tank is fixed to the modular lamp holder body via a solid hydrogen storage fixing device. A controller custom box is provided above the solid hydrogen storage tank, and a control unit and a fuel cell are installed inside the controller custom box. Solar panels are installed on the side of the modular lamp holder body.

[0008] Preferably, the solid hydrogen storage fixing device includes two sets of upper and lower annular titanium buckles, and the inner side of the buckle is provided with an elastic damping pad. The elastic damping pad has a three-layer structure of fluororubber surface layer, honeycomb aluminum core middle layer and shape memory alloy spring bottom layer.

[0009] Preferably, the fuel cell integrates a self-breathing cathode, the cathode plate of the fuel cell has through holes, the portion of the cathode plate in contact with the membrane electrode is coated with a gold layer, the portion of the cathode plate in contact with air is coated with a hydrophilic ceramic membrane, and the cathode outlet of the fuel cell is connected to a tailwater recycling pipeline.

[0010] Preferably, the solid hydrogen storage tank includes a tank body, a hydrogen outlet is provided at the top of the tank body, a valve is provided at the hydrogen outlet, a temperature sensor and a pressure sensor are installed at the valve and at the bottom of the solid hydrogen storage tank, and the tank body is covered with a Pt resistance heating film and a silica aerogel insulation layer.

[0011] Preferably, the controller customization box is provided with a fuel cell air-cooling heat dissipation fin slot, the controller customization box is provided with a controller fixing slot on the top, and the controller customization box is provided with anti-vibration baffles on both sides.

[0012] Preferably, the modular lamp holder body is provided with a waterproof cover on the top and side, and the waterproof cover is provided with an air tightness detection channel. The air inlet of the air tightness detection channel is connected to an external air source, and the air outlet of the air tightness detection channel is connected to the interior of the modular lamp holder body.

[0013] A control method for a hydrogen photoelectric multi-energy coupled lighting device includes the following steps: S1: Collects current light intensity, energy storage battery charge, and ambient temperature; S2: If the ambient temperature is less than or equal to the temperature threshold, the fuel cell will be activated to supply power to the energy storage battery, which in turn supplies power to the lighting unit. S3: If the ambient temperature is greater than the temperature threshold, determine whether the light intensity is less than or equal to the light threshold and whether the energy storage battery charge is less than or equal to the charge threshold. Based on the determination results, select to start the fuel cell or the solar panel.

[0014] Preferably, step S3 includes: if the light intensity is less than or equal to the light threshold and the energy storage battery charge is less than or equal to the charge threshold, starting the fuel cell to supply power to the energy storage battery, and the energy storage battery to supply power to the lighting unit; if the light intensity is less than or equal to the light threshold and the energy storage battery charge is greater than the charge threshold, the energy storage battery to supply power to the LED; if the light intensity is greater than the light threshold and the energy storage battery charge is less than or equal to the charge threshold, starting the solar panel to supply power to the energy storage battery and the lighting unit; if the light intensity is greater than the light threshold and the energy storage battery charge is greater than the charge threshold, starting the solar panel to supply power to the energy storage battery, and the energy storage battery to supply power to the lighting unit.

[0015] Preferably, the modular lamp holder body is provided with a waterproof cover on the top and side, and the waterproof cover is provided with an air tightness detection channel. The air inlet of the air tightness detection channel is connected to an external air source, and the air outlet of the air tightness detection channel is connected to the interior of the modular lamp holder body.

[0016] Therefore, this invention has the following beneficial effects: by integrating a clean energy system that combines low-pressure solid-state hydrogen storage, fuel cells, photovoltaic power generation, energy storage, and LED lighting, it achieves breakthrough cross-weekly and even cross-seasonal energy storage. By prioritizing solar power supply and activating the fuel cell only when the energy storage battery needs charging, streetlights can operate continuously even in the absence of sunlight, completely solving the problem of intermittent renewable energy. At the same time, the fuel cell can start normally at a low temperature of -40°C to supply power to the energy storage battery, and by utilizing the heat generation characteristics of the energy storage battery during charging, it solves the problem of low-temperature power supply of traditional energy storage batteries, filling the gap in new energy lighting in frigid regions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the system architecture of the hydrogen photoelectric multi-energy coupled lighting device in this invention.

[0018] Figure 2 This is a schematic diagram of the modular lamp holder body in this invention.

[0019] Figure 3 This is a front view of the modular lamp holder body in this invention.

[0020] Figure 4 This is a flowchart of the control method in this invention.

[0021] In the diagram: 1. Control unit; 2. Lighting unit; 3. Fuel cell; 4. Solar panel; 5. Solid hydrogen storage device; 6. Energy storage battery; 7. Solid hydrogen storage tank; 8. Sensor; 9. Modular lamp holder body; 10. Custom controller box; 11. Waterproof cover; 12. Air-cooled heat sink slot; 13. Controller mounting slot; 14. Insertion hole. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1: This embodiment provides a hydrogen photoelectric multi-energy coupling lighting device, such as... Figure 1 As shown, the system includes: a control unit 1, a lighting unit 2, an energy system, a sensor 8, and a structural unit. The energy system and lighting unit are connected to the control unit, and the sensor is also connected to the control unit. The control unit, lighting unit, energy system, and sensor are all mounted on the structural unit. During operation, the control unit controls the charging method of the lighting unit based on temperature, light intensity, and the power of the energy storage battery.

[0023] The energy system includes a fuel cell 3, a solar panel 4, an energy storage battery 6, and a solid hydrogen storage tank 7. The solar panel is connected to the energy storage battery and the lighting unit through a control unit. The fuel cell is connected to the energy storage battery through a control unit. The solid hydrogen storage tank is connected to the control unit and the fuel cell, respectively.

[0024] The structural unit includes a solid-state hydrogen storage fixing device 5 and an internal frame with a vibration-resistant outer shell, as well as a modular lamp holder body 9 and an exterior component with a waterproof cover. The lighting unit includes an LED lamp and a housing, with the LED lamp installed inside the housing. In the energy system, the solid-state hydrogen storage tank is connected to the hydrogen fuel cell, the solar panel is connected to the energy storage battery, the energy storage battery is connected to the LED lamp, and the controller in the control unit is connected to the hydrogen fuel cell, the solar panel, the energy storage battery, and the LED lamp.

[0025] The hydrogen-photovoltaic multi-energy coupled lighting device provided in this embodiment reduces hydrogen consumption by 50% and extends fuel cell life to 20,000 hours through a three-level energy management optimization strategy and a solid-state hydrogen storage-built-in structure synergistic design. It solves the problems of insufficient endurance in cloudy and rainy weather and low-temperature failure in traditional streetlights, and has advantages such as being unaffected by weather, zero emissions, and long endurance, making it a promising candidate for application in the field of new energy lighting. The three-level energy management optimization strategy prioritizes solar power supply and activates the fuel cell only when the energy storage battery needs charging, thereby avoiding frequent start-stop cycles.

[0026] The following examples and specific application scenarios further illustrate the technical solution and effects of the present invention. The following examples are explanations of the present invention, but the present invention is not limited to the following examples.

[0027] The sensors include a light intensity sensor and a temperature sensor. The light intensity sensor senses the light intensity and sends it to the control unit. The control unit activates the solar panel to supply power when the light intensity reaches a preset value. The temperature sensor senses the ambient temperature and sends the sensed ambient temperature to the control unit. The control unit activates the fuel cell to supply power when the temperature value is lower than a set value.

[0028] The solid hydrogen storage tank in the energy system uses a titanium-based alloy hydrogen storage medium and operates at a pressure of 5 MPa. It also integrates a temperature / pressure sensor, a Pt resistance heating film, and a silica aerogel insulation layer.

[0029] Specifically, the solid hydrogen storage tank includes a tank body with a hydrogen outlet at the top. An electric flow valve is installed at the hydrogen outlet, which is connected to a control unit. The control unit controls the opening and closing of the electric valve. Temperature and pressure sensors are installed at the electric valve and at the bottom of the solid hydrogen storage tank. The tank body is covered with a Pt resistance heating film and a silica aerogel insulation layer.

[0030] A temperature sensor is used to detect the temperature of hydrogen inside the solid-state hydrogen storage tank, and a pressure sensor is used to detect the gas pressure inside the solid-state hydrogen storage tank. A Pt resistance heating film is used to maintain the temperature of the fuel cell, ensuring normal operation of the fuel cell in low-temperature environments.

[0031] In this embodiment, the fuel cell is an air-cooled hydrogen fuel cell, which also integrates an air-breathing cathode, a tailwater recovery pipeline, an inlet valve, and an outlet valve. During operation, hydrogen and air, as fuel gas and oxidant gas respectively, flow through gas channels on the bipolar plates to the anode and cathode, where they react under the action of a catalyst to produce water. This process is accompanied by electron migration, generating an electric current. The air-cooled fuel cell uses air for cooling, which is supplied to the fuel cell by a cooling fan. Air serves as both a coolant and the cathode gas. Because the reactants are gases, air-cooled fuel cells require excellent airtightness to prevent leakage. Poor airtightness leading to leakage not only affects the energy utilization efficiency of the fuel cell but also poses certain safety hazards. Therefore, before being put into use, the fuel cell needs to undergo airtightness testing to ensure that the hydrogen and air gas channels form a closed loop within the stack.

[0032] In this embodiment, the fuel cell integrates a self-breathing cathode. Through-holes are provided on the cathode plate, and the portion of the cathode plate in contact with the membrane electrode assembly (MEA) is coated with a gold layer. This gold layer is applied by electroplating and serves to prevent corrosion and reduce contact resistance. The portion of the cathode plate in contact with air is coated with a hydrophilic ceramic membrane, which is applied using micro-arc oxidation technology. Due to the superhydrophilic properties of the hydrophilic ceramic membrane, water generated at the cathode can rapidly diffuse into a plane on the surface of the membrane, preventing the formation of liquid droplets. This effectively avoids flooding of the cathode plate and prevents blockage of the self-breathing through-holes. A tailwater recovery pipeline is used to recover water generated at the fuel cell cathode.

[0033] The control unit can control the start and stop of the fuel cell, sense the lighting unit, and optimize energy management. It incorporates a multi-energy coupling management algorithm integrating hydrogen, photovoltaic, and solar power. The control unit prioritizes solar power generation to charge the LED energy storage battery. For example, if the current temperature is 30 degrees Celsius, the light intensity is 100 lux, and the energy storage battery is at 20% charge, or the light intensity is 50 lux and the energy storage battery is at 15% charge, the fuel cell is activated, allowing it to output power only to the energy storage battery and prohibiting direct power supply to the LED lights. If the current temperature is -10 degrees Celsius, the fuel cell is activated, allowing it to output power only to the energy storage battery and prohibiting direct power supply to the LED lights. If the current temperature is 15 degrees Celsius, the light intensity is 150 lux, and the energy storage battery is at 30% charge, the solar panels are activated to power the energy storage battery, which then powers the lighting unit.

[0034] For structural units, such as Figure 2 As shown and Figure 3 As shown, the modular lamp holder body adopts a segmented truss structure, and the components are connected by a four-pronged buckle quick-release interface. A waterproof cover 11 is installed on the side of the modular lamp holder body, and a lighting unit is installed on the top of the modular lamp holder body.

[0035] The solid hydrogen storage tank is fixed inside the modular lamp holder body by a solid hydrogen storage fixing device. A controller custom box 10 is set on top of the solid hydrogen storage tank. The controller custom box is equipped with a control unit and a fuel cell. Solar panels are installed on the side of the modular lamp holder body.

[0036] The solid hydrogen storage tank fixing device consists of two sets of annular titanium alloy buckles and elastic damping pads. The elastic damping pads are located on the inner side of the annular titanium alloy buckles that contact the solid hydrogen storage tank. The tolerance between the inner diameter of the annular titanium alloy buckles and the outer diameter of the hydrogen storage tank is 0.5 mm. The compression deformation of the elastic damping pads is 3 mm. The elastic damping pads have a sandwich structure of fluororubber surface layer / honeycomb aluminum core middle layer / shape memory alloy spring bottom layer.

[0037] like Figure 3As shown, the controller customization box is provided with a fuel cell air-cooled heat dissipation fin slot 12, the controller customization box is provided with a controller fixing slot 13 on the top, and the controller is provided with an anti-vibration baffle on the side. The controller fixing slot is used to fix the controller customization box inside the modular lamp holder body.

[0038] The controller custom box has an insertion hole 14 for inserting the connecting pipe between the solid hydrogen storage tank and the fuel cell.

[0039] In this embodiment, the hydrogen consumption rate in the solid hydrogen storage cylinder will be predicted based on the weather conditions in the area where the hydrogen photoelectric multi-energy coupled lighting device is installed, so that the solid hydrogen storage cylinder can be replaced in a timely manner to ensure the normal use of the hydrogen photoelectric multi-energy coupled lighting device.

[0040] This embodiment also provides a control method for a hydrogen photoelectric multi-energy coupled lighting device, such as... Figure 4 As shown, the specific steps include: Step 1, collecting the current light intensity, energy storage battery charge, and ambient temperature; Step 2, if the ambient temperature is less than or equal to the temperature threshold, then start the fuel cell to supply power to the energy storage battery, and the energy storage battery to supply power to the lighting unit; Step 3, if the ambient temperature is greater than the temperature threshold, determine whether the light intensity is less than or equal to the light threshold and whether the energy storage battery charge is less than or equal to the charge threshold, and select to start the fuel cell or the solar panel based on the determination results.

[0041] Through a three-level energy management strategy, namely, prioritizing solar power supply and activating fuel cells only when the energy storage battery needs charging to avoid frequent start-stop of fuel cells; and setting temperature as the highest priority, directly charging fuel cells when the temperature is low, regardless of light intensity and energy storage battery charge, so that lighting devices can still provide normal illumination in low temperatures, solving the problems of insufficient battery life and low-temperature failure of traditional streetlights on cloudy and rainy days.

[0042] Step 1: Collect current light intensity, energy storage battery charge, and ambient temperature.

[0043] Light intensity data can be collected using a light sensor, ambient temperature data can be collected using a temperature sensor, and the battery power can be collected using a power detection circuit.

[0044] Step 2: If the ambient temperature is less than or equal to the temperature threshold, the fuel cell is activated to supply power to the energy storage battery, which in turn supplies power to the lighting unit.

[0045] In this embodiment, the temperature threshold is set to -10 degrees Celsius. That is, if the ambient temperature is less than or equal to -10 degrees Celsius, the fuel cell is activated to supply power to the energy storage battery, which in turn supplies power to the lighting unit to provide illumination. The fuel does not directly supply power to the energy storage battery. If the ambient temperature is greater than -10 degrees Celsius, the third step is executed.

[0046] Step 3: If the ambient temperature is greater than the temperature threshold, determine whether the light intensity is less than or equal to the light threshold and whether the energy storage battery charge is less than or equal to the charge threshold. Based on the determination results, select to start the fuel cell or solar panel.

[0047] When the ambient temperature is above the temperature threshold, the charging method of the lighting unit is selected based on the light intensity and the energy storage battery capacity.

[0048] Specifically, there are four situations: In the first scenario, if the light intensity is less than or equal to the light threshold and the energy storage battery charge is less than or equal to the charge threshold, the fuel cell is activated to supply power to the energy storage battery, which in turn supplies power to the lighting unit.

[0049] The second scenario is when the light intensity is less than or equal to the light threshold and the energy storage battery capacity is greater than the capacity threshold. In this case, only the energy storage battery supplies power to the lighting unit, and neither the solar panel nor the fuel cell works.

[0050] The third scenario: When the light intensity is greater than the light threshold and the energy storage battery capacity is less than or equal to the capacity threshold, the solar panel is activated to supply power to the energy storage battery and the lighting unit.

[0051] The fourth scenario: When the light intensity is greater than the light threshold and the energy storage battery capacity is greater than the capacity threshold, the solar panel is activated to supply power to the energy storage battery, and the energy storage battery supplies power to the lighting unit.

[0052] In this embodiment, the light intensity threshold is set to 100 lux, and the energy threshold is set to 20% of the rated energy capacity of the energy storage battery. Specifically: if the light intensity is 80 lux and the energy storage battery energy capacity is 10% of its rated capacity, the fuel cell powers the energy storage battery, which in turn powers the lighting unit. If the light intensity is 80 lux and the energy storage battery energy capacity is 25% of its rated capacity, the energy storage battery powers only the lighting unit. If the light intensity is 120 lux and the energy storage battery energy capacity is 15% of its rated capacity, the solar panel powers both the energy storage battery and the lighting unit. If the light intensity is 120 lux and the energy storage battery energy capacity is 70% of its rated capacity, the solar panel powers the energy storage battery, which in turn powers the lighting unit.

[0053] The hydrogen-photovoltaic multi-energy coupled lighting device and its control method provided in this embodiment have the following beneficial effects: By integrating a clean energy system of low-pressure solid hydrogen storage, fuel cells, photovoltaic power generation, energy storage, and LED lighting, it achieves breakthrough cross-weekly and even cross-seasonal energy storage. By prioritizing solar power supply and activating the fuel cell only when the energy storage battery needs charging, the streetlights can operate continuously even in the absence of sunlight, completely solving the problem of intermittency of renewable energy. At the same time, the fuel cell can start normally at a low temperature of -40°C to supply power to the energy storage battery, and by utilizing the heat generation characteristics of the energy storage battery during charging, it solves the problem of low-temperature power supply of traditional energy storage batteries, filling the gap in new energy lighting in frigid regions.

[0054] Example 2: This embodiment further optimizes the hydrogen-photovoltaic multi-energy coupled lighting device described in Embodiment 1, based on Embodiment 1. The device is installed in a high-latitude, rainy region where temperatures are low and cloudy / rainy weather is frequent. Using only solar panels to power streetlights is insufficient for daily use. Therefore, a hydrogen-photovoltaic multi-energy coupled lighting device integrating low-pressure solid-state hydrogen storage, fuel cells, photovoltaic power generation, energy storage batteries, and LED lighting is adopted. Furthermore, building upon Embodiment 1, a human body sensor and a hydrogen supply detection device are incorporated to achieve lighting in this region.

[0055] In this embodiment, the sensor includes a human body sensor. After the human body sensor detects a human body, it sends information to the control unit. The control unit controls the lighting unit to illuminate, thereby saving energy and extending the service life of the hydrogen photoelectric multi-energy coupling lighting device.

[0056] To protect the solid hydrogen storage tank, control unit, and fuel cell inside the modular light fixture body from rainwater and dust infiltration, it is necessary to test the airtightness of the modular light fixture body (hydrogen-photovoltaic multi-energy coupled lighting device). Therefore, an airtightness testing channel is integrated into the waterproof cover.

[0057] The airtightness testing channel has an inlet connected to an external air source and an outlet connected to the interior of the modular lamp holder body. This airtightness testing channel is mainly used to test the airtightness of the modular lamp holder body.

[0058] Specifically, this embodiment uses a gas detection method to measure the gas by comparing a standard component with the component under test. Based on thermodynamic principles, for an ideal gas in a sealed container, if the gas temperature remains constant, the product of its pressure and volume is constant. When testing a hydrogen-photovoltaic multi-energy coupled lighting device, it is filled with compressed gas or a vacuum is created to make the internal pressure higher than atmospheric pressure or form a negative pressure. If a leak occurs in the device, the internal pressure will inevitably decrease or increase. The relationship between the leaked gas volume and pressure drop can be derived using thermodynamic formulas, and the leakage rate can be calculated from this. Based on the leakage rate, four levels are assigned to determine the waterproof and dustproof rating of the device. When the waterproof and dustproof rating is low, timely maintenance is performed on the device.

[0059] And such as Figure 2 and Figure 3 As shown, the controller custom box is installed inside the modular light fixture body, the solar panel is installed on the outside of the modular light fixture body, but the controller custom box is installed on the back of the solar panel, separated only by the outer shell of the modular light fixture body. The fuel cell is installed inside the controller custom box. In extreme low temperature weather, the heat generated by the operation of the fuel cell can be transferred to the solar panel to a certain extent, increasing the temperature of the solar panel and accelerating the melting of ice and snow on the surface of the solar panel.

[0060] Based on the hydrogen-photovoltaic multi-energy coupled lighting device provided in this embodiment, the control method of the hydrogen-photovoltaic multi-energy coupled lighting device has also been optimized, and an alarm device has been added. The pressure inside the solid hydrogen storage tank is detected. If the pressure data is lower than the set pressure threshold, it is determined whether the hydrogen flow rate from the solid hydrogen storage tank has reached the set first flow rate threshold. If it has not reached the first threshold, it indicates that the hydrogen content in the solid hydrogen storage tank is low, and the solid hydrogen storage tank needs to be replaced. A warning message needs to be sent to the service center to remind the staff. If the hydrogen flow rate from the solid hydrogen storage tank has not reached the second flow rate threshold, the opening of the electric flow valve is increased to increase the hydrogen flow rate. The second flow rate threshold is greater than the first flow rate threshold.

[0061] In this embodiment, the energy systems of several hydrogen-photovoltaic multi-energy coupled lighting devices in the area are used independently, and there is no electrical connection between any two hydrogen-photovoltaic multi-energy coupled lighting devices. This makes the hydrogen-photovoltaic multi-energy coupled lighting devices provided in this embodiment easier to install than traditional streetlights, reducing the cost of erecting power lines. Only the hydrogen supply detection device uploads the detection information to the service center via a wireless transmission system, so that staff can replace the solid hydrogen storage cylinders in a timely manner, ensuring the normal operation of the hydrogen-photovoltaic multi-energy coupled lighting device.

[0062] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A hydrogen photoelectric multi-energy coupling lighting device, characterized in that, include: The control unit is connected to an energy system and a lighting unit. The energy system includes a fuel cell, a solar panel, and an energy storage battery. The fuel cell is connected to a solid hydrogen storage tank. The fuel cell is connected to the energy storage battery through the control unit. The solar panel is connected to both the energy storage battery and the lighting unit through the control unit. The energy storage battery is connected to the lighting unit. The control unit is connected to a sensor. The control unit controls the charging method of the lighting unit based on temperature, light intensity, and the energy storage battery charge.

2. The hydrogen photoelectric multi-energy coupling lighting device according to claim 1, characterized in that, The system includes a modular light fixture body, which adopts a segmented truss structure and is connected to components via a four-pronged snap-on quick-release interface. The solid hydrogen storage tank is fixed inside the modular light fixture body by a solid hydrogen storage fixing device. A controller custom box is provided above the solid hydrogen storage tank, and the controller custom box is equipped with a control unit and a fuel cell. Solar panels are installed on the side of the modular light fixture body.

3. The hydrogen photoelectric multi-energy coupling lighting device according to claim 2, characterized in that, The solid hydrogen storage device includes two sets of annular titanium buckles, one above the other. The buckles are provided with elastic damping pads on their inner sides. The elastic damping pads are a three-layer structure consisting of a fluororubber surface layer, a honeycomb aluminum core middle layer, and a shape memory alloy spring bottom layer.

4. A hydrogen photoelectric multi-energy coupling lighting device according to claim 1, 2, or 3, characterized in that, The fuel cell integrates a self-breathing cathode, the cathode plate of the fuel cell has through holes, the part of the cathode plate in contact with the membrane electrode is coated with a gold layer, the part of the cathode plate in contact with air is coated with a hydrophilic ceramic membrane, and the cathode outlet of the fuel cell is connected to a tailwater recycling pipeline.

5. A hydrogen photoelectric multi-energy coupling lighting device according to claim 1, 2, or 3, characterized in that, The solid hydrogen storage tank includes a tank body, a hydrogen outlet at the top of the tank body, a valve at the hydrogen outlet, a temperature sensor and a pressure sensor installed at the valve, and a Pt resistance heating film and a silica aerogel insulation layer covering the tank body.

6. A hydrogen photoelectric multi-energy coupling lighting device according to claim 2 or 3, characterized in that, The controller customization box is equipped with a fuel cell air-cooling heat dissipation fin slot, the controller customization box is equipped with a controller fixing slot on the top, and the controller customization box is equipped with shock-resistant baffles on both sides.

7. A hydrogen photoelectric multi-energy coupling lighting device according to claim 2 or 3, characterized in that, The modular lamp holder body has a waterproof cover on its side. The waterproof cover has an airtightness detection channel inside. The airtightness detection channel inlet is connected to an external air source, and the airtightness detection channel outlet is connected to the inside of the modular lamp holder body.

8. A control method for a hydrogen photoelectric multi-energy coupled lighting device, applied to the hydrogen photoelectric multi-energy coupled lighting device according to any one of claims 1-7, characterized in that, Including the following steps: S1: Collects current light intensity, energy storage battery charge, and ambient temperature; S2: If the ambient temperature is less than or equal to the temperature threshold, the fuel cell will be activated to supply power to the energy storage battery, which in turn supplies power to the lighting unit. S3: If the ambient temperature is greater than the temperature threshold, determine whether the light intensity is less than or equal to the light threshold and whether the energy storage battery charge is less than or equal to the charge threshold. Based on the determination results, select to start the fuel cell or the solar panel.

9. The control method for a hydrogen photoelectric multi-energy coupled lighting device according to claim 8, characterized in that, S3 includes: if the light intensity is less than or equal to the light threshold and the energy storage battery charge is less than or equal to the charge threshold, the fuel cell is activated to supply power to the energy storage battery, and the energy storage battery supplies power to the lighting unit; if the light intensity is less than or equal to the light threshold and the energy storage battery charge is greater than the charge threshold, the energy storage battery supplies power to the LED; if the light intensity is greater than the light threshold and the energy storage battery charge is less than or equal to the charge threshold, the solar panel is activated to supply power to the energy storage battery and the lighting unit; if the light intensity is greater than the light threshold and the energy storage battery charge is greater than the charge threshold, the solar panel is activated to supply power to the energy storage battery, and the energy storage battery supplies power to the lighting unit.

10. A control method for a hydrogen photoelectric multi-energy coupled lighting device according to claim 8 or 9, characterized in that, The pressure inside the solid hydrogen storage tank is monitored. If the pressure data is lower than the set pressure threshold, it is determined whether the hydrogen output flow rate of the solid hydrogen storage tank has reached the set flow rate threshold. If it has not reached the threshold, an early warning message is sent.

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