Portable hydrogen-rich water irrigation system for farmland

Abstract

The invention discloses a portable hydrogen-rich water irrigation system for farmland, and belongs to the technical field of agricultural facilities. The system comprises a photovoltaic power generation module, a proton exchange membrane water electrolysis hydrogen production module, a hydrogen purification device, a low-pressure hydrogen storage container, a field gas distribution network and an intelligent control system, a standby energy interface module is designed, and multi-energy input of mains supply, a fuel generator or a methanol fuel cell is supported; and automatic energy supplementation when photovoltaic power supply is insufficient is achieved through the intelligent switching unit, the problems that traditional agricultural hydrogen supply equipment is high in energy consumption and poor in mobility are solved, and the system is particularly suitable for being applied to remote farmland environments.

Description

Technical Field

[0001] This application relates to the field of agricultural facility technology, and more specifically, to a portable hydrogen supply method and system for farmland. Background Technology

[0002] In recent years, gaseous fertilization technology, as a significant innovation in modern agriculture, has demonstrated remarkable advantages in improving crop yield and quality. Traditional gaseous fertilization primarily focuses on the application of carbon dioxide (CO2); however, recent research indicates that trace amounts of hydrogen (H2) have a unique promoting effect on crop growth. Hydrogen, as a novel bioactive molecule, can enhance crop yield through multiple mechanisms, including regulating the plant's antioxidant system, promoting nutrient absorption, and enhancing stress resistance. However, existing hydrogen supply technologies have significant limitations: industrial high-pressure hydrogen storage systems are bulky and pose safety hazards, making them unsuitable for field applications; chemical hydrogen production methods require continuous addition of reactants, are complex to operate, and are costly; while water electrolysis for hydrogen production is clean, traditional systems consume excessive energy and are difficult to operate stably in farmland environments with insufficient power grid coverage. Furthermore, existing gaseous fertilization equipment generally lacks intelligent, precise gas release control, failing to dynamically adjust according to the gas requirements of different crop growth stages. These problems severely restrict the widespread application of hydrogen fertilization technology in agricultural production.

[0003] With the growing global demand for sustainable agriculture, the application of renewable energy sources such as solar power in agriculture has attracted significant attention. While photovoltaic (PV) technology provides a viable power supply solution for remote farmland, its inherent intermittency and instability pose serious challenges to continuously operating agricultural equipment. Particularly in high-energy-consuming applications such as water electrolysis for hydrogen production, conventional solar systems struggle to guarantee a continuous and stable power output. Cloudy or rainy weather, or nighttime hours, can cause system shutdowns, directly impacting the continuity of hydrogen supply and consequently affecting crop growth. Currently available hybrid energy systems are mostly complex and bulky, unsuitable for portable farmland equipment. Furthermore, existing energy management systems lack optimization for the specific needs of agriculture, failing to intelligently allocate power resources under limited energy conditions and struggling to consider the power consumption characteristics of different subsystems such as hydrogen electrolysis and gas transportation. These issues result in widespread reliability and low energy efficiency in current renewable energy agricultural equipment, necessitating the development of new intelligent energy management solutions to overcome the technical bottleneck of unstable photovoltaic power supply. Summary of the Invention

[0004] This application provides a portable hydrogen-rich water irrigation system for farmland to address the technical problems of insufficient reliability and low energy efficiency that are common in renewable energy agricultural equipment.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution: A portable hydrogen-rich water irrigation system for farmland, characterized in that it comprises: Photovoltaic power generation modules are used to convert solar energy into electrical energy; A proton exchange membrane water electrolysis hydrogen production module is connected to the photovoltaic power generation module and uses the electrolysis of pure water to produce hydrogen. A gas-liquid mixing device is connected to the proton exchange membrane water electrolysis hydrogen production module, which is used to dissolve the generated hydrogen in irrigation water in a timely and efficient manner to form hydrogen-rich water. A hydrogen-rich water buffer storage unit is used for temporary storage of the hydrogen-rich water; An irrigation water distribution network, including pipes and multiple sprinklers, is used to deliver hydrogen-rich water to crop growing areas; The intelligent control system coordinates the entire process management of photovoltaic power generation, electrolytic hydrogen production, gas-liquid mixing, hydrogen-rich water storage, and irrigation. The backup energy interface module is used to connect to external supplementary energy when photovoltaic power supply is insufficient.

[0006] The backup energy interface module includes: Multiple energy input ports support AC mains power, fuel generator or methanol fuel cell power input; The intelligent switching unit automatically activates backup energy when it detects that the photovoltaic power generation is lower than the system demand threshold.

[0007] The proton exchange membrane water electrolysis hydrogen production module includes: A bipolar plate stacked electrolytic cell made of corrosion-resistant metal materials; The variable power drive circuit dynamically adjusts the working power of the electrolytic cell according to the available electrical energy.

[0008] The gas-liquid mixing device is: Nanobubble generators utilize high-speed rotating rotors or the Venturi effect to produce micron- and nano-sized bubbles, efficiently dissolving hydrogen in water; or Low-pressure, high-efficiency gas-liquid mixing pump.

[0009] The irrigation water distribution network adopts: Water pipes made of weather-resistant polymer materials; Drip tape, drip arrows, or sprinklers are used as irrigation devices; The low-power irrigation pump switches to intermittent operation mode when the system power supply is tight.

[0010] The intelligent control system includes: The power generation optimization unit matches the photovoltaic output with the electrolyzer's operating parameters in real time. The energy priority management module prioritizes the power supply to the gas-liquid mixing device and irrigation pumps. A remote monitoring interface is used for data transmission and system status visualization.

[0011] The system casing is made of: Waterproof box body made of composite engineering plastics; The internal electronic components are sealed and protected. A detachable energy compartment for housing backup power generation equipment.

[0012] Further includes: Automatic energy type identification circuit; Input power adaptive regulation device; Fuel reserve monitoring sensors are used to provide early warnings of remaining backup energy levels.

[0013] A portable hydrogen-rich water irrigation method for farmland includes the following steps: Solar energy is converted into electrical energy through photovoltaic power generation modules; Real-time monitoring of system power supply capacity and energy consumption requirements; When photovoltaic power supply is sufficient, solar-powered electrolysis hydrogen production processes should be used first. When photovoltaic power is insufficient, backup energy will be automatically activated to supplement the power supply; The hydrogen produced by electrolysis is passed into a gas-liquid mixing device and mixed with irrigation water to form hydrogen-rich water. Hydrogen-rich water is transported to the fields for irrigation through an irrigation network; The intelligent control system is used to maintain the continuous operation of hydrogen production, gas-liquid mixing and irrigation.

[0014] The backup energy activation strategy includes: Power supply priority is set according to the critical growth stages of crops; Automatically switches to hybrid power supply mode at night or in rainy weather; Record energy usage data to optimize system configuration parameters.

[0015] The technical solutions provided by the embodiments disclosed in this application have the following beneficial effects: This system, through its innovative design of instantly dissolving electrolyzed hydrogen in irrigation water to form hydrogen-rich water, fundamentally eliminates the potential explosion risks associated with direct hydrogen application, achieving inherent technological safety. Employing highly efficient gas-liquid mixing technology (such as a nanobubble generator), it significantly improves the solubility and stability of hydrogen in water, effectively solving the technical challenges of hydrogen's easy dispersion and low utilization rate, thus ensuring its biofertilizer efficacy. Simultaneously, the system eliminates the traditional high-energy-consuming purification and compression storage processes, achieving "on-demand" hydrogen production, significantly reducing system complexity and operating costs.

[0016] This system perfectly aligns with the characteristics of solar-powered systems, boasting extremely low core water consumption and high compatibility with photovoltaic power supply modes. The intelligent control system collaboratively manages the entire process of photovoltaic power generation, electrolysis hydrogen production, gas-liquid mixing, and irrigation, and ensures continuous and stable operation even in cloudy or rainy weather through multiple energy backup interfaces. Ultimately, it achieves safe, efficient, energy-saving, reliable, and easy-to-operate field gas fertilization, providing an innovative technological solution for increasing yields and efficiency in modern agriculture. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 These are exemplary flowcharts shown according to some embodiments of this application; Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] A portable hydrogen-rich water irrigation system for farmland, characterized in that it comprises: Photovoltaic power generation modules are used to convert solar energy into electrical energy; A proton exchange membrane water electrolysis hydrogen production module is connected to the photovoltaic power generation module and uses the electrolysis of pure water to produce hydrogen. A gas-liquid mixing device is connected to the proton exchange membrane water electrolysis hydrogen production module, which is used to dissolve the generated hydrogen in irrigation water in a timely and efficient manner to form hydrogen-rich water. A hydrogen-rich water buffer storage unit is used for temporary storage of the hydrogen-rich water; An irrigation water distribution network, including pipes and multiple sprinklers, is used to deliver hydrogen-rich water to crop growing areas; The intelligent control system coordinates the entire process management of photovoltaic power generation, electrolytic hydrogen production, gas-liquid mixing, hydrogen-rich water storage, and irrigation. The backup energy interface module is used to connect to external supplementary energy when photovoltaic power supply is insufficient.

[0021] The backup energy interface module includes: Multiple energy input ports support AC mains power, fuel generator or methanol fuel cell power input; The intelligent switching unit automatically activates backup energy when it detects that the photovoltaic power generation is lower than the system demand threshold.

[0022] The proton exchange membrane water electrolysis hydrogen production module includes: A bipolar plate stacked electrolytic cell made of corrosion-resistant metal materials; The variable power drive circuit dynamically adjusts the working power of the electrolytic cell according to the available electrical energy.

[0023] The gas-liquid mixing device is: Nanobubble generators utilize high-speed rotating rotors or the Venturi effect to produce micron- and nano-sized bubbles, efficiently dissolving hydrogen in water; or Low-pressure, high-efficiency gas-liquid mixing pump.

[0024] The irrigation water distribution network adopts: Water pipes made of weather-resistant polymer materials; Drip tape, drip arrows, or sprinklers are used as irrigation devices; The low-power irrigation pump switches to intermittent operation mode when the system power supply is tight.

[0025] The intelligent control system includes: The power generation optimization unit matches the photovoltaic output with the electrolyzer's operating parameters in real time. The energy priority management module prioritizes the power supply to the gas-liquid mixing device and irrigation pumps. A remote monitoring interface is used for data transmission and system status visualization.

[0026] The system casing is made of: Waterproof box body made of composite engineering plastics; The internal electronic components are sealed and protected. A detachable energy compartment for housing backup power generation equipment.

[0027] Further includes: Automatic energy type identification circuit; Input power adaptive regulation device; Fuel reserve monitoring sensors are used to provide early warnings of remaining backup energy levels.

[0028] A portable hydrogen-rich water irrigation method for farmland includes the following steps: Solar energy is converted into electrical energy through photovoltaic power generation modules; Real-time monitoring of system power supply capacity and energy consumption requirements; When photovoltaic power supply is sufficient, solar-powered electrolysis hydrogen production processes should be used first. When photovoltaic power is insufficient, backup energy will be automatically activated to supplement the power supply; The hydrogen produced by electrolysis is passed into a gas-liquid mixing device and mixed with irrigation water to form hydrogen-rich water. Hydrogen-rich water is transported to the fields for irrigation through an irrigation network; The intelligent control system is used to maintain the continuous operation of hydrogen production, gas-liquid mixing and irrigation.

[0029] The backup energy activation strategy includes: Power supply priority is set according to the critical growth stages of crops; Automatically switches to hybrid power supply mode at night or in rainy weather; Record energy usage data to optimize system configuration parameters.

[0030] The embodiments of the present invention are illustrated in detail in the accompanying drawings and with practical examples: This invention provides a specific implementation of a portable hydrogen-rich water irrigation system for farmland. This system utilizes solar energy to achieve instant hydrogen production, efficient dissolution, and precise irrigation, providing the necessary hydrogen-rich water environment for crop growth. Upon system startup, the monocrystalline silicon solar panel array in the photovoltaic power generation module begins operation, converting received solar radiation into direct current (DC) electricity. In standard configuration, this array consists of 20 400-watt photovoltaic modules, with a total installed capacity of 8 kilowatts, generating approximately 32 kilowatt-hours of electricity per day under standard illumination conditions. This electricity is first optimized and regulated by a maximum power point tracking controller to ensure maximum power extraction under varying light intensities, and then transmitted to the system's core control unit. The control unit's built-in power optimization algorithm analyzes the photovoltaic output characteristics in real time and dynamically adjusts the power distribution strategy, prioritizing the power needs of the water electrolysis hydrogen production module and the gas-liquid mixing device.

[0031] The water electrolysis hydrogen production module employs proton exchange membrane technology and consists of 10 stacked titanium-based metal bipolar plates. Each electrolysis unit operates at 2 volts, for a total operating voltage of 20 volts. When the system detects that the photovoltaic power generation reaches the electrolyzer's start-up threshold, the control unit sends a command to initiate the electrolysis process. Pure water is pumped into the anode side of the electrolyzer, where it decomposes under the action of a catalyst to produce oxygen and protons. These protons migrate through the proton exchange membrane to the cathode side, where they combine with electrons to form hydrogen molecules. The entire device is designed to produce 3 standard cubic meters of hydrogen per hour. The hydrogen produced by electrolysis is directly transported to a nanobubble generator via a low-pressure pipeline. This generator uses high-speed gyratory cutting technology to produce hydrogen bubbles with a diameter of less than 100 nanometers, which instantly dissolve in irrigation water drawn from a nearby water source, forming saturated hydrogen-rich water with a hydrogen concentration of 0.8-1.5 ppm and a hydrogen dissolution efficiency exceeding 85%.

[0032] The prepared hydrogen-rich water is temporarily stored in a 500-liter buffer tank made of food-grade polyethylene and equipped with a level sensor and a hydrogen concentration monitoring probe. When an irrigation command is issued, the hydrogen-rich water in the tank is pumped out by a low-power DC irrigation pump (rated power 200 watts) and transported to the field via weather-resistant polyethylene water pipes. The pipes have an outer diameter of 25 mm and are equipped with pressure-compensated drippers every 0.5 meters, with a flow rate of 2 liters per hour, ensuring that the hydrogen-rich water is evenly and precisely dripped around the roots of each crop.

[0033] The system's intelligent control system is developed based on the STM32H743 microprocessor and runs a real-time operating system, capable of simultaneously processing data from multiple sensors and coordinating the operation of various subsystems. The control algorithm includes a dedicated energy management module that continuously monitors photovoltaic power generation, energy storage battery status, and load demand. When insufficient photovoltaic power is detected, the system immediately initiates a backup energy switching process. The backup energy interface module first determines the type of energy input through an automatic identification circuit. If it is AC mains input, it adjusts the voltage to the system's required level via a built-in AC-DC converter; if it is a fuel generator or methanol fuel cell, it is directly connected to the DC bus. During the switching process, an adaptive input power adjustment device smoothly transitions the power supply, ensuring that the electrolyzer and gas-liquid mixing unit are not damaged due to voltage fluctuations.

[0034] On a typical workday, the system operates automatically according to a preset program. In the early morning, when sunlight intensity reaches the activation threshold, the photovoltaic array begins generating electricity, with the control system prioritizing power to the electrolyzer and nanobubble generator. At midday, when sunlight is strongest, the system operates at full capacity, simultaneously producing hydrogen and hydrogen-rich water, while excess electrical energy is stored. In the evening, as sunlight weakens, the system automatically reduces its operating power. When the photovoltaic output falls below 1 kilowatt, the methanol fuel cell is activated as a backup power source. At night, the system relies entirely on energy storage and backup power to maintain a minimum level of hydrogen-rich water production. The entire system is housed in a protective enclosure made of composite engineering plastics, achieving an IP65 protection rating, providing dust and water resistance. Internal electronic components are sealed with potting compound. The detachable energy compartment design allows for easy replacement and maintenance of the backup power generation equipment, enhancing the system's practicality and reliability.

[0035] All key data generated during system operation, including hydrogen production rate, hydrogen-rich water concentration, irrigation flow rate, and energy usage, are uploaded to the cloud server via a 4G communication module. Farmers can view the system status in real time through a smartphone application, receive low water level warnings or fault alarms, and adjust hydrogen-rich water irrigation parameters according to crop type and growth stage. The system's built-in data analysis function records historical operating data and automatically generates energy usage reports and optimization suggestions to help users improve system efficiency. In actual field trials, the device performed excellently in tomato cultivation. By precisely controlling the hydrogen-rich water irrigation strategy of 1.2 ppm for 2 hours per day during the flowering period and 0.8 ppm for 4 hours per day during the fruiting period, a 25% increase in yield was achieved, while fertilizer use was reduced by 28%, verifying the practical value and economic benefits of the invention. The entire system is designed with the special requirements of farmland use in mind, achieving a balance between safety, reliability, and ease of use while ensuring performance, providing an innovative hydrogen-rich water irrigation solution for modern agriculture.

[0036] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the present invention. The spirit and scope of this application. Thus, if these modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A portable hydrogen-rich water irrigation system for agricultural fields, characterized by, Comprising: a photovoltaic power generation module for converting solar energy into electrical energy; a proton exchange membrane water electrolysis hydrogen production module connected to the photovoltaic power generation module for generating hydrogen by electrolyzing pure water; a gas-liquid mixing device connected to the proton exchange membrane water electrolysis hydrogen production module for instantly and efficiently dissolving the generated hydrogen into irrigation water to form hydrogen-rich water; a hydrogen-rich water buffer storage unit for temporarily storing the hydrogen-rich water; an irrigation water distribution network including pipelines and a plurality of water emitters for delivering the hydrogen-rich water to crop planting areas; an intelligent control system for coordinating the whole process management of photovoltaic power generation, electrolysis hydrogen production, gas-liquid mixing, hydrogen-rich water storage, and irrigation; a backup energy interface module for connecting external supplemental energy when photovoltaic power supply is insufficient.

2. The portable hydrogen-rich water irrigation system for farmland according to claim 1, wherein The backup energy interface module comprises: a multi-energy input port supporting AC power supply, oil generator, or methanol fuel cell power input; an intelligent switching unit that automatically enables backup energy when the photovoltaic power generation is detected to be lower than the system demand threshold.

3. The portable hydrogen-rich water irrigation system for farmlands according to claim 1, wherein The proton exchange membrane water electrolysis hydrogen production module comprises: a bipolar plate stacked electrolyzer made of corrosion-resistant metal material; a variable power drive circuit that dynamically adjusts the electrolyzer working power according to available electrical energy.

4. The portable hydrogen-rich water irrigation system for farmlands according to claim 1, wherein The gas-liquid mixing device is: a nanobubble generator that uses high-speed rotating rotors or Venturi effect to generate micron and nanometer bubbles to efficiently dissolve hydrogen into water; or a low-pressure high-efficiency gas-liquid mixing pump.

5. The portable hydrogen-rich water irrigation system for farmlands according to claim 1, wherein The irrigation water distribution network uses: water delivery pipelines made of weather-resistant polymer materials; drip irrigation tapes, drip arrows, or sprinklers as water emitters; low-power irrigation water pumps that switch to intermittent operation mode when system power supply is tight.

6. The portable hydrogen-rich water irrigation system for farmlands according to claim 1, wherein The intelligent control system comprises: a power generation power optimization unit that matches photovoltaic output with electrolyzer working parameters in real time; an energy priority management module that prioritizes power supply for the gas-liquid mixing device and irrigation water pump; a remote monitoring interface for data transmission and system status visualization.

7. The portable hydrogen-rich water irrigation system for farmlands according to claim 1, wherein The system housing uses: a waterproof box made of composite engineering plastic; internal electronic components are sealed and protected; a detachable energy compartment for accommodating backup power generation equipment.

8. The backup energy source interface module of claim 2, wherein, Further comprising: an energy type automatic identification circuit; an input power adaptive adjustment device; a fuel reserve monitoring sensor for warning the remaining amount of backup energy.

9. A portable hydrogen-rich water irrigation method for an agricultural field, characterized by, The steps include: converting solar energy into electrical energy by a photovoltaic power generation module; monitoring system power supply capacity and energy consumption demand in real time; when photovoltaic power supply is sufficient, preferentially using solar energy to drive the electrolysis hydrogen production process; when photovoltaic power supply is insufficient, automatically starting backup energy to supplement power supply; passing the electrolysis-generated hydrogen into a gas-liquid mixing device to mix with irrigation water to form hydrogen-rich water; delivering the hydrogen-rich water through an irrigation network to the field for irrigation; maintaining the continuous operation of hydrogen production, gas-liquid mixing, and irrigation by using an intelligent control system.

10. The portable hydrogen-rich water irrigation method for farmlands according to claim 9, characterized by, The backup energy enabling strategy includes: setting power supply guarantee priority according to the critical period of crop growth; automatically switching to mixed power supply mode at night or during rainy weather; recording energy use data to optimize system configuration parameters.

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