Photovoltaic dynamic electrolytic hydrogen production and seawater desalination combined device

Abstract

The invention provides a photovoltaic dynamic electrolytic hydrogen production and seawater desalination combined device. The photovoltaic dynamic electrolytic hydrogen production and seawater desalination combined device comprises a photovoltaic power generation module, an electrolytic hydrogen production module, a heat energy recovery module, a seawater desalination module and a control module, the photovoltaic power generation module is used for converting solar energy into electric energy; the electrolytic hydrogen production module is connected with the photovoltaic power generation module; the heat energy recovery module is close to the electrolytic hydrogen production module; the seawater desalination module is connected with the heat energy recovery module through a pipeline; the photovoltaic power generation module, the electrolytic hydrogen production module, the heat energy recovery module and the seawater desalination module are respectively connected with the control module, and the control module is used for monitoring the working states of the photovoltaic power generation module, the electrolytic hydrogen production module, the heat energy recovery module and the seawater desalination module in real time and performing dynamic adjustment according to real-time data. The device has the technical effects that clean energy is provided through photovoltaic power generation, electric energy is converted into hydrogen through electrolytic hydrogen production, and waste heat in the electrolysis process is utilized for seawater desalination, so that efficient comprehensive utilization of energy and resources is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrolytic hydrogen production, and in particular relates to a photovoltaic dynamic electrolytic hydrogen production and seawater desalination combined device. Background Art

[0002] At present, with the development of clean energy technology, photovoltaic electrolysis hydrogen production and seawater desalination technology have been widely used in their respective fields. However, the possibility of combining the two has not been fully considered in the existing technology, resulting in low energy utilization and low system integration. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art and provide a new technical solution for a photovoltaic dynamic electrolysis hydrogen production and seawater desalination device.

[0004] According to one aspect of the present invention, a photovoltaic dynamic electrolysis hydrogen production and seawater desalination device is provided, comprising:

[0005] A photovoltaic power generation module, which is used to convert solar energy into electrical energy;

[0006] An electrolytic hydrogen production module, which is connected to the photovoltaic power generation module and is used to electrolyze water into hydrogen and oxygen under the action of the electric energy output by the photovoltaic power generation module;

[0007] A heat recovery module, which is close to the electrolysis hydrogen production module and is used to recover heat energy generated during the electrolysis process;

[0008] A seawater desalination module, which is connected to the heat energy recovery module through a pipeline and is used to desalinate seawater under the action of heat energy recovered by the heat energy recovery module to obtain fresh water;

[0009] The photovoltaic power generation module, the electrolysis hydrogen production module, the heat recovery module and the seawater desalination module are respectively connected to the control module, and the control module is used to monitor the working status of the photovoltaic power generation module, the electrolysis hydrogen production module, the heat recovery module and the seawater desalination module in real time, and perform dynamic adjustments according to real-time data.

[0010] Optionally, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device further includes a hydrogen storage module;

[0011] The hydrogen storage module is connected to the electrolytic hydrogen production module through a pipeline and is used to store the hydrogen produced by the electrolytic hydrogen production module.

[0012] Optionally, the hydrogen storage module includes a high-pressure hydrogen storage tank and a low-pressure hydrogen storage tank, the high-pressure hydrogen storage tank is used to store gaseous hydrogen, and the low-pressure hydrogen storage tank is used to store liquid hydrogen; wherein the hydrogen is cooled to a liquid state by liquid hydrogen storage technology.

[0013] Optionally, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device further includes a transport module;

[0014] The delivery module is connected to the hydrogen storage module, and the delivery module includes a hydrogen compressor and a delivery pipeline. The input end of the hydrogen compressor is connected to the hydrogen storage module, and the output end is connected to the delivery pipeline. The hydrogen compressor is used to compress hydrogen to a preset pressure.

[0015] Optionally, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device further includes an energy storage module;

[0016] The energy storage module is connected to the photovoltaic power generation module and is used to store excess electric energy generated by the photovoltaic power generation module.

[0017] Optionally, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device further includes a hydrogen purification module;

[0018] The hydrogen purification module is connected to the electrolytic hydrogen production module and is used to purify the hydrogen produced by the electrolytic hydrogen production module.

[0019] Optionally, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device further includes a water treatment and reuse module;

[0020] The water treatment and reuse module is connected to the seawater desalination module and is used to treat and reuse the wastewater generated by the seawater desalination module.

[0021] Optionally, the water treatment and reuse module includes a pretreatment device, a membrane treatment device and a reuse device; wherein the input end of the pretreatment device is connected to the wastewater outlet of the seawater desalination module, and the output end is connected to the membrane treatment device; the output end of the membrane treatment device is connected to the reuse device;

[0022] The pretreatment equipment is used to remove suspended matter and large particle impurities in the wastewater through multi-stage filtration and sedimentation; the membrane treatment equipment uses a reverse osmosis membrane or a nanofiltration membrane to remove dissolved salts and organic matter in the wastewater and produce regenerated water; the reuse equipment is used for secondary use of the regenerated water.

[0023] Optionally, the control module monitors the working status of the photovoltaic power generation module, the electrolysis hydrogen production module, the heat recovery module, and the seawater desalination module in real time.

[0024] include:

[0025] The control module adjusts the current and voltage of the electrolytic hydrogen production module in real time according to the power generation of the photovoltaic panels of the photovoltaic power generation module and the hydrogen demand of the electrolytic hydrogen production module; at the same time, the control module dynamically adjusts the heat recovery efficiency of the heat energy recovery module by monitoring the temperature and pressure of the electrolytic cell of the electrolytic hydrogen production module;

[0026] The control module optimizes the fresh water output rate and energy consumption by adjusting the pressure and flow rate of the reverse osmosis membrane of the seawater desalination module.

[0027] Optionally, the energy storage module includes a battery pack, an inverter and a battery management system; the battery pack includes a lithium-ion battery or a lithium iron phosphate battery, and the inverter is used to convert the direct current output by the battery pack into alternating current; the battery management system is connected to the battery pack for monitoring and managing the working status of the battery.

[0028] A technical effect of the present invention is:

[0029] In the embodiment of the present application, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device uses the electricity generated by the photovoltaic power generation module to electrolyze hydrogen, and uses the byproducts (such as heat energy) generated during the electrolysis process to desalinate seawater, thereby providing two resources of fresh water and hydrogen. Moreover, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device integrates a photovoltaic power generation module, an electrolysis hydrogen production module, a heat recovery module and a seawater desalination module, realizing efficient utilization of energy and multifunctional application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of a photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device according to an embodiment of the present invention.

[0031] In the figure: 1. Photovoltaic power generation module; 2. Electrolysis hydrogen production module; 3. Heat recovery module; 4. Seawater desalination module; 5. Control module; 6. Hydrogen storage module; 7. Transportation module; 8. Energy storage module; 9. Hydrogen purification module; 10. Water treatment and reuse module. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0033] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] According to one aspect of the present invention, see Figure 1 , provides a photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device, which provides an efficient and environmentally friendly energy solution by combining photovoltaic electrolysis hydrogen production with seawater desalination technology.

[0036] Specifically, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device comprises:

[0037] A photovoltaic power generation module 1, wherein the photovoltaic power generation module 1 is used to convert solar energy into electrical energy;

[0038] An electrolytic hydrogen production module 2, which is connected to the photovoltaic power generation module 1 and is used to electrolyze water into hydrogen and oxygen under the action of the electric energy output by the photovoltaic power generation module 1;

[0039] A heat recovery module 3, which is close to the electrolysis hydrogen production module 2 and is used to recover heat energy generated during the electrolysis process;

[0040] A seawater desalination module 4, which is connected to the heat recovery module 3 through a pipeline and is used to desalinate seawater under the action of heat energy recovered by the heat recovery module 3 to obtain fresh water;

[0041] The control module 5, the photovoltaic power generation module 1, the electrolysis hydrogen production module 2, the heat recovery module 3 and the seawater desalination module 4 are respectively connected to the control module 5, and the control module 5 is used to monitor the working status of the photovoltaic power generation module 1, the electrolysis hydrogen production module 2, the heat recovery module 3 and the seawater desalination module 4 in real time, and perform dynamic adjustments according to real-time data.

[0042] In the embodiment of the present application, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device uses the electric energy generated by the photovoltaic power generation module to electrolyze hydrogen, and uses the by-products (such as heat energy) generated in the electrolysis process to desalinate seawater. That is, photovoltaic power generation provides clean energy, electrolysis hydrogen production converts electric energy into hydrogen, and uses the waste heat in the electrolysis process to desalinate seawater, thereby realizing the efficient and comprehensive utilization of energy and resources.

[0043] In a specific implementation, the photovoltaic power generation module is the core part of the photovoltaic dynamic electrolysis hydrogen production and seawater desalination device, which is responsible for converting solar energy into electrical energy. The photovoltaic power generation module is mainly composed of a number of photovoltaic panels, which are made of high-efficiency monocrystalline silicon or polycrystalline silicon materials, and the most suitable type is selected according to the lighting conditions and climate characteristics of the installation site. The photovoltaic panels are installed with a fixed tilt angle or a dual-axis tracking system to maximize the reception of sunlight and improve the photoelectric conversion efficiency.

[0044] Exemplarily, the technical parameters of photovoltaic panels are as follows:

[0045] Photoelectric conversion efficiency: ≥20%; Peak power: 300W-400W / unit; Operating voltage: 36V; Operating current: 8.33A; Open circuit voltage: 45V; Short circuit current: 9.23A.

[0046] In order to maximize the power generation efficiency of photovoltaic panels, an intelligent photovoltaic tracking system is used to dynamically adjust the angle of photovoltaic panels, track the position of the sun in real time, and ensure that the photovoltaic panels are always at the best power generation angle. Photovoltaic panels are connected to the electrolytic hydrogen production module and the heat recovery module through cables, and the power output is dynamically adjusted through the control module. The control module can automatically adjust the output power of the photovoltaic panels according to the real-time needs of the electrolytic hydrogen production module and the heat recovery module, ensuring that the system can operate efficiently and stably under different lighting conditions.

[0047] Exemplarily, the technical parameters of the control module are as follows:

[0048] Maximum input voltage: 1000V; Maximum output power: 10kW; Output voltage range: 24V-48V; Efficiency: ≥98%; Communication interface: RS485, WiFi.

[0049] In a specific implementation, the photovoltaic power generation module also integrates a remote monitoring function, which monitors the operating status of the photovoltaic power generation module in real time through the Internet of Things technology, and performs fault diagnosis and maintenance management. The design of the photovoltaic panel takes into account environmental factors such as dustproof, waterproof, and windproof to ensure that it can still operate stably under severe weather conditions. The surface of the photovoltaic panel is coated with self-cleaning material, which can automatically remove dust and dirt and maintain efficient light reception. In addition, the installation structure of the photovoltaic panel adopts a modular design, which is convenient for installation, maintenance and replacement, further improving the reliability and service life of the system.

[0050] In the embodiment of the present application, the electrolysis hydrogen production module is a key component for converting the electricity generated by the photovoltaic panel into hydrogen. The electrolysis hydrogen production module mainly includes an electrolyzer, electrodes and an electrolyte. The electrolyzer is made of corrosion-resistant materials and can work stably under high voltage and high current conditions. The electrode is the core component of the electrolysis reaction. The use of efficient catalytic materials, such as precious metals such as platinum and iridium, or new nanomaterials, can significantly improve the electrolysis efficiency.

[0051] Specifically, the technical parameters of the electrolyzer are as follows:

[0052] Working voltage: 1.8V-2.2V; Working current: 500A-1000A; Hydrogen output: 1Nm 3 / h-5Nm 3 / h; electrolyte concentration: 30% KOH.

[0053] In the process of hydrogen production by electrolysis, water is decomposed into hydrogen and oxygen under the action of electrolyte and electric field. The anode (positive electrode) releases oxygen and the cathode (negative electrode) releases hydrogen. In order to improve the electrolysis efficiency and hydrogen purity, an appropriate amount of additives such as potassium hydroxide (KOH) or sodium hydroxide (NaOH) can be added to the electrolyte to improve the conductivity and stability of the electrolyte. The design of the electrolyzer takes into account the arrangement of electrodes, the circulation of the electrolyte and the effective separation of gases to ensure the efficiency and stability of the electrolysis process.

[0054] Optionally, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device further includes a hydrogen storage module 6;

[0055] The hydrogen storage module 6 is connected to the electrolytic hydrogen production module 2 through a pipeline, and is used to store the hydrogen generated by the electrolytic hydrogen production module.

[0056] In the above embodiments, hydrogen can be stored in a hydrogen storage module or directly delivered to an application device. In order to ensure the safe storage and transportation of hydrogen, the hydrogen storage module usually uses a high-pressure gas cylinder or metal hydride hydrogen storage material and is equipped with necessary safety valves and monitoring devices to prevent hydrogen leakage and explosion accidents.

[0057] Exemplarily, the technical parameters of the hydrogen storage module are as follows:

[0058] Hydrogen storage pressure: 35MPa-70MPa; Hydrogen storage capacity: 10Nm 3 -100Nm 3 ; Safety valve opening pressure: 40MPa-75MPa; Material: high-strength alloy steel or composite material.

[0059] In other embodiments, the electrolysis hydrogen production module is equipped with an intelligent control system that can automatically adjust the electrolysis current and voltage according to the output power of the photovoltaic panel and the working state of the electrolyzer to optimize the energy utilization rate during the electrolysis process. The control system can also record and analyze the operating data during the electrolysis process, providing an important reference for the optimization design and fault diagnosis of the system.

[0060] It should be noted that the heat recovery module is an important innovation of the present invention, which aims to utilize the heat energy generated during the electrolysis hydrogen production process to improve the energy efficiency of the entire system. During the electrolysis process, the electrolyzer and electrodes will generate a large amount of heat. Traditional electrolysis hydrogen production systems usually discharge this heat directly into the environment, resulting in energy waste. The heat recovery module effectively recovers this waste heat through a specific design and uses it for other purposes such as seawater desalination.

[0061] Specifically, the technical parameters of the heat recovery module are as follows:

[0062] Heat recovery efficiency: ≥70%; heat exchange area: 10m 2 -50m 2 ;Material: High-efficiency thermal conductive material (such as copper, aluminum alloy).

[0063] The heat recovery module is usually set around the electrolyzer of the electrolysis hydrogen production module, and adopts efficient heat conduction materials and structural design to ensure that the heat generated during the electrolysis process can be absorbed to the maximum extent. The heat recovery module is connected to the seawater desalination module through a pipeline, and the recovered heat energy is transferred to the seawater desalination module for heating seawater or assisting distillation. The design of the heat recovery module takes into account the heat conduction efficiency, heat storage capacity and loss during heat transfer to ensure efficient heat recovery and utilization.

[0064] In order to further improve the efficiency of heat recovery, the heat recovery module can be integrated with an intelligent control system to monitor the temperature changes of the electrolyzer in real time and automatically adjust various parameters in the heat recovery and transmission process according to the temperature changes. For example, by adjusting the flow rate and flow rate of the coolant, it is ensured that the heat recovery module always operates in the best working state. In addition, the heat recovery module can also be equipped with a heat storage device, such as phase change materials or high-efficiency heat storage materials, to store excess heat energy and release it when needed, further improving the energy efficiency of the system.

[0065] Exemplarily, the technical parameters of the thermal energy storage device are as follows: heat storage capacity: 5kWh-20kWh; phase change temperature: 40°C-80°C; heat storage efficiency: ≥80%; material: phase change material or high-efficiency heat storage material.

[0066] In the embodiment of the present application, the seawater desalination module is another key component of the present invention, which converts seawater into fresh water by utilizing the recovered heat energy to provide clean water resources. The seawater desalination module mainly includes a distillation device or a reverse osmosis device, and related auxiliary equipment. According to different application requirements and technical conditions, the most suitable desalination technology and equipment can be selected.

[0067] Exemplarily, the technical parameters of the distillation apparatus are as follows:

[0068] Distillation efficiency: ≥90%; Evaporation temperature: 60℃-100℃; Condenser condensation efficiency: ≥85%; Material: stainless steel or corrosion-resistant alloy.

[0069] The distillation unit is a process that heats seawater to evaporate it, and then condenses the steam into fresh water through a condenser. The design of the distillation unit needs to consider the efficiency of the evaporation and condensation processes, and use efficient heat exchange materials and structures to ensure full utilization of thermal energy. By using the heat transmitted by the heat recovery module to heat seawater, the energy consumption in the distillation process can be significantly reduced and the desalination efficiency can be improved.

[0070] The technical parameters of the reverse osmosis device are as follows:

[0071] Membrane flux: 100L / h-1000L / h; Desalination rate: ≥99%; Working pressure: 4MPa-6MPa; High-pressure pump power: 1kW-5kW.

[0072] The reverse osmosis device uses a high-pressure pump to press seawater into the reverse osmosis membrane, allowing water molecules to pass through the membrane while the salt is retained, thereby achieving seawater desalination. The key to the reverse osmosis device is the selection of the reverse osmosis membrane and the performance of the high-pressure pump. An efficient reverse osmosis membrane can achieve efficient seawater desalination at a lower pressure, reducing energy consumption and operating costs. The high-pressure pump needs to have high stability and long life to ensure the long-term stable operation of the system.

[0073] In other embodiments, the desalination module is automatically managed through an intelligent control system, which monitors various parameters in the desalination process, such as temperature, pressure and flow, in real time, and optimizes and adjusts according to actual conditions. The intelligent control system can also record and analyze operating data, providing an important basis for system maintenance and optimization. In addition, the design of the desalination module also needs to consider issues such as anti-corrosion, anti-fouling and anti-scaling, and use appropriate materials and technologies to ensure the long-term stable operation of the system and the fresh water output.

[0074] Exemplary technical parameters of anti-corrosion, anti-fouling and anti-scaling measures are as follows:

[0075] Anti-corrosion materials: titanium alloy or anti-corrosion coating; anti-fouling measures: ultrasonic cleaning or chemical cleaning; anti-scaling technology: electromagnetic anti-scaling or chemical anti-scaling agent.

[0076] In the embodiment of the present application, the intelligent control system (i.e., the control module of the present application) is the "brain" of the entire combined device, responsible for coordinating and optimizing the operation of each module. The intelligent control system monitors the working status of the photovoltaic power generation module, the electrolysis hydrogen production module, the heat recovery module, and the desalination module in real time through sensors and controllers, and dynamically adjusts according to real-time data to ensure that the system can operate efficiently under different working conditions.

[0077] Exemplarily, the technical parameters of the intelligent control system are as follows:

[0078] Processor speed: 1.2GHz-2.5GHz; memory: 8GB-16GB; data storage capacity: 500GB-1TB; communication interface: Ethernet, RS485, WiFi, 4G / 5G.

[0079] The intelligent control system uses advanced algorithms and artificial intelligence technology to adjust the current and voltage in real time and optimize the electrolysis efficiency according to the power generation of the photovoltaic panels and the hydrogen demand of the electrolysis hydrogen production module. At the same time, by monitoring the temperature and pressure of the electrolyzer, the intelligent control system can dynamically adjust the heat recovery efficiency of the heat recovery module to ensure that the recovered heat energy can be fully utilized. In addition, the intelligent control system is also responsible for monitoring the working status of the seawater desalination module, and optimizing the fresh water output rate and energy consumption by adjusting the pressure and flow of the reverse osmosis membrane. Furthermore, the intelligent control system also integrates remote monitoring and diagnosis functions, and realizes remote monitoring and management of the intelligent control system through the Internet of Things technology, timely discovers and solves faults, and ensures the long-term stable operation of the system.

[0080] Optionally, the hydrogen storage module includes a high-pressure hydrogen storage tank and a low-pressure hydrogen storage tank, wherein the high-pressure hydrogen storage tank is used to store gaseous hydrogen and the low-pressure hydrogen storage tank is used to store liquid hydrogen; wherein the hydrogen is cooled to a liquid state by liquid hydrogen storage technology, which can better ensure that the prepared hydrogen can be stored safely and efficiently.

[0081] Optionally, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device further includes a transport module 7;

[0082] The delivery module 7 is connected to the hydrogen storage module 6. The delivery module 7 includes a hydrogen compressor and a delivery pipeline. The input end of the hydrogen compressor is connected to the hydrogen storage module, and the output end is connected to the delivery pipeline. The hydrogen compressor is used to compress hydrogen to a preset pressure.

[0083] In the above embodiment, since the hydrogen storage module 6 and the delivery module 7 are important components of the present invention, they are responsible for safely and efficiently storing and delivering the prepared hydrogen to the use site. The hydrogen storage module mainly includes a high-pressure hydrogen storage tank, a low-temperature hydrogen storage tank, a hydrogen compressor and a delivery pipeline.

[0084] The technical parameters of the hydrogen storage module and the transport module are as follows:

[0085] High-pressure hydrogen storage tank working pressure: 35MPa-70MPa; low-temperature hydrogen storage tank working temperature: -253℃-20℃; hydrogen compressor flow: 10Nm 3 / h-100Nm 3 / h; Pipeline material: high-strength alloy steel or composite material.

[0086] For example, high-pressure hydrogen storage tanks are made of high-strength alloy steel or composite materials, which can withstand high-pressure storage conditions and ensure the safe storage of hydrogen. Cryogenic hydrogen storage tanks use liquid hydrogen storage technology to cool hydrogen to a liquid state, reduce storage volume, and improve storage efficiency. Hydrogen compressors use multi-stage compression to compress hydrogen to the required pressure to ensure efficient transmission during transportation.

[0087] The hydrogen storage module and the delivery module are managed automatically through an intelligent control system, which monitors the pressure, temperature and flow of the hydrogen storage tank in real time and makes dynamic adjustments according to actual needs to ensure the safe storage and efficient delivery of hydrogen. The delivery pipeline is made of corrosion-resistant and high-strength materials to ensure the safe and efficient transmission of hydrogen during the delivery process. The system also has safety monitoring and alarm functions to detect and handle potential leaks and faults in a timely manner to ensure the safe and stable operation of the system.

[0088] Optionally, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device further includes an energy storage module 8;

[0089] The energy storage module 8 is connected to the photovoltaic power generation module 1 and is used to store excess electrical energy generated by the photovoltaic power generation module 1 .

[0090] In the above embodiment, the energy storage module is an important component of the present invention, which is used to store the excess power generated by the photovoltaic power generation module to ensure stable power output when there is insufficient light or a sudden increase in power demand. The energy storage module is mainly composed of a battery pack, an inverter and a battery management system (BMS).

[0091] Exemplarily, the technical parameters of the energy storage system are as follows:

[0092] Battery type: lithium-ion battery or lithium iron phosphate battery; battery capacity: 10kWh-100kWh; rated voltage: 48V-400V; inverter efficiency: ≥95%; lBMS function: battery balancing, overcharge protection, over-discharge protection, temperature monitoring.

[0093] In addition, the energy storage module is managed automatically through an intelligent control system. It automatically adjusts the charging and discharging process according to the output power and power demand of the photovoltaic power generation module to optimize energy utilization efficiency. The energy storage module also has a remote monitoring function, which monitors the voltage, temperature and current of the battery in real time, and performs data analysis and fault diagnosis through the cloud platform to ensure the safe and stable operation of the system.

[0094] Optionally, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device further includes a hydrogen purification module 9;

[0095] The hydrogen purification module 9 is connected to the hydrogen production module 2 for purifying the hydrogen produced by the hydrogen production module 2 .

[0096] In the above embodiment, the hydrogen purification module is a key module to ensure that the prepared hydrogen meets the high purity requirements. The module removes impurities and by-products in the hydrogen through multi-stage purification treatment to ensure that the purity of the hydrogen meets the application standards.

[0097] In a specific implementation, the input end of the hydrogen purification module 9 is connected to the electrolytic hydrogen production module 2 , and the output end is connected to the hydrogen storage module 6 .

[0098] Exemplarily, the technical parameters of the hydrogen purification module are as follows:

[0099] Purification efficiency: ≥99.99%; Processing flow: 1Nm 3 / h-10Nm 3 / h; Impurity removal rate: CO<0.1ppm, H2O<0.1ppm, N2<0.1ppm; Equipment material: stainless steel or corrosion-resistant alloy.

[0100] In a specific embodiment, the hydrogen purification module generally includes a multi-stage purification device such as an adsorption bed, a condenser, a dryer and a precision filter. The adsorption bed uses a high-efficiency adsorption material, such as a molecular sieve or activated carbon, which can effectively remove moisture and organic impurities in the hydrogen. The condenser condenses and precipitates some impurities in the hydrogen through low-temperature treatment, further improving the purity of the hydrogen. The dryer removes trace moisture in the hydrogen through a desiccant or membrane separation technology to ensure the dryness of the hydrogen. The precision filter removes tiny particles and impurities in the hydrogen through multi-stage filtration to ensure the high purity of the hydrogen.

[0101] In addition, the hydrogen purification module realizes automatic management through the intelligent control system, monitors the purity and flow of hydrogen in real time, and makes dynamic adjustments according to the actual situation to ensure the purification efficiency and purity of hydrogen. The hydrogen purification module also has remote monitoring and diagnosis functions, and realizes data monitoring and fault analysis through the cloud platform to ensure the long-term stable operation of the system.

[0102] Optionally, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device further includes a water treatment and reuse module 10;

[0103] The water treatment and reuse module 10 is connected to the seawater desalination module 4 and is used to treat and reuse the wastewater generated by the seawater desalination module 4 .

[0104] Optionally, the water treatment and reuse module includes a pretreatment device, a membrane treatment device and a reuse device; wherein the input end of the pretreatment device is connected to the wastewater outlet of the seawater desalination module, and the output end is connected to the membrane treatment device; the output end of the membrane treatment device is connected to the reuse device;

[0105] The pretreatment equipment is used to remove suspended matter and large particle impurities in the wastewater through multi-stage filtration and sedimentation; the membrane treatment equipment uses a reverse osmosis membrane or a nanofiltration membrane to remove dissolved salts and organic matter in the wastewater and produce regenerated water; the reuse equipment is used for secondary use of the regenerated water.

[0106] In the above-mentioned embodiment, the water treatment and reuse module is an important part of the present invention, which is responsible for treating and reusing the wastewater generated by the seawater desalination module to improve the utilization rate of water resources.

[0107] Exemplarily, the technical parameters of the water treatment and reuse module are as follows:

[0108] Pre-treatment device processing capacity: 10m 3 / h-100m 3 / h; Desalination rate of membrane treatment device: ≥95%; Recovery rate of recycling equipment: ≥80%; Equipment material: stainless steel or corrosion-resistant alloy.

[0109] Pretreatment equipment removes suspended solids and large particles from wastewater through multi-stage filtration and sedimentation, ensuring efficient operation of subsequent treatment processes. Membrane treatment equipment uses reverse osmosis membranes or nanofiltration membranes to effectively remove dissolved salts and organic matter from wastewater and produce high-quality recycled water. Recycling equipment uses recycled water for cooling, cleaning, irrigation and other purposes through multi-stage circulation and treatment, improving the utilization efficiency of water resources.

[0110] In addition, the water treatment and reuse module realizes automatic management through the intelligent control system, monitors various parameters in the water treatment process in real time, such as flow, pressure and water quality, and makes dynamic adjustments according to actual conditions to ensure the efficiency and stability of the water treatment process. The water treatment and reuse module also has remote monitoring and diagnosis functions, and realizes data monitoring and fault analysis through the cloud platform to ensure the long-term stable operation of the water treatment and reuse module.

[0111] Optionally, the control module monitors the working status of the photovoltaic power generation module, the electrolysis hydrogen production module, the heat recovery module, and the seawater desalination module in real time, including:

[0112] The control module adjusts the current and voltage of the electrolytic hydrogen production module in real time according to the power generation of the photovoltaic panels of the photovoltaic power generation module and the hydrogen demand of the electrolytic hydrogen production module; at the same time, the control module dynamically adjusts the heat recovery efficiency of the heat energy recovery module by monitoring the temperature and pressure of the electrolytic cell of the electrolytic hydrogen production module;

[0113] The control module optimizes the fresh water output rate and energy consumption by adjusting the pressure and flow rate of the reverse osmosis membrane of the seawater desalination module.

[0114] Optionally, the energy storage module includes a battery pack, an inverter and a battery management system; the battery pack includes a lithium-ion battery or a lithium iron phosphate battery with high energy density and long life to ensure efficient and safe energy storage; the inverter is used to convert the direct current output by the battery pack into alternating current to supply the electrolytic hydrogen production module and other loads; the battery management system (BMS) is connected to the battery pack to monitor and manage the working status of the battery, prevent the battery from overcharging, over-discharging and overheating, and extend the service life of the battery. .

[0115] It should be noted that the system integration and optimization of the control module is a key link of the present invention, which is responsible for organically combining various modules to ensure the overall coordination and efficient operation of the system. System integration and optimization mainly include modular design, intelligent scheduling and energy management.

[0116] The technical parameters of system integration and optimization are as follows:

[0117] Modular design: standard interfaces and protocols; intelligent scheduling algorithm: artificial intelligence and machine learning; energy management efficiency: ≥90%; system redundancy: ≥20%.

[0118] The modular design of the control module organically combines the photovoltaic power generation module, electrolysis hydrogen production module, heat recovery module, desalination module, energy storage system, hydrogen purification system, hydrogen storage and transportation system, and water treatment and reuse system through standard interfaces and protocols, so as to achieve efficient collaborative work of each module. Intelligent scheduling uses artificial intelligence and machine learning algorithms to analyze and predict system operation data, optimize energy utilization and system efficiency, and improve the overall performance and economy of the system. Energy management improves energy utilization efficiency and reduces energy waste and cost expenditure by optimizing energy flow and energy-saving measures. System redundancy ensures that the system can still operate normally when some modules fail through backup equipment and fast switching strategies, thereby improving the stability and reliability of the system.

[0119] In the embodiment of the present application, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device has the following technical effects:

[0120] 1. Comprehensive integration of photovoltaic dynamic electrolysis hydrogen production and seawater desalination combined device: That is, the present invention organically combines photovoltaic power generation, electrolysis hydrogen production and seawater desalination technology to form a comprehensive energy and resource utilization system. Photovoltaic power generation provides clean energy, electrolysis hydrogen production converts electrical energy into hydrogen, and the waste heat in the electrolysis process is used for seawater desalination to achieve efficient and comprehensive utilization of energy and resources. This multifunctional integrated device not only improves the efficiency of a single technology, but also significantly reduces the total energy consumption and operating costs of the system, providing an innovative solution for the efficient utilization of renewable energy and seawater desalination.

[0121] 2. Dynamic electrolysis control: that is, traditional electrolysis hydrogen production systems usually operate with a constant current or voltage, and fail to fully utilize the dynamic characteristics of photovoltaic power generation. The dynamic electrolysis control technology proposed in the present invention ensures that the electrolyzer can operate efficiently and stably under different lighting conditions by real-time monitoring and adjusting the current and voltage during the electrolysis process. The intelligent control system integrates a high-performance processor and a sensor network, which can quickly respond to changes in photovoltaic power generation and optimize the energy utilization rate during the electrolysis process. This dynamic control technology significantly improves the efficiency and stability of hydrogen production by electrolysis, reduces dependence on traditional grid electricity, and promotes the application of renewable energy in the field of hydrogen production.

[0122] 3. Heat recovery and utilization: A large amount of heat is generated during the electrolytic hydrogen production process. Traditional electrolysis systems usually discharge this heat directly into the environment, resulting in energy waste. The present invention innovatively designs a heat recovery module to effectively recover the waste heat generated during the electrolysis process and use it for other purposes such as seawater desalination. The heat recovery module uses high-efficiency heat conduction materials and intelligent control systems, which can adjust the heat recovery and transmission process in real time and improve the utilization efficiency of thermal energy. In this way, not only the total energy consumption of hydrogen production by electrolysis is reduced, but also the secondary utilization of heat energy is achieved, which improves the overall efficiency and environmental performance of the system.

[0123] 4. Multi-energy complementarity: That is, the present invention integrates photovoltaic power generation, wind power generation and other renewable energy power generation devices, and realizes the comprehensive utilization and complementary energy supply of multiple energy sources through the energy management controller and the energy dispatching system. The energy management controller adopts an intelligent algorithm to automatically adjust the working state of each power generation module according to the real-time load demand and renewable energy power generation situation, and optimize the power output and energy storage process. The energy dispatching system predicts energy demand and power generation through big data analysis and artificial intelligence technology, and formulates the optimal energy dispatching strategy. This multi-energy complementary system significantly improves the utilization rate of renewable energy and the stability of the system, and provides technical support for achieving 100% renewable energy energy supply.

[0124] 5. Environmental monitoring and protection: That is, the present invention fully considers environmental protection in the system design. Through environmental monitoring sensors and data analysis platforms, the environmental impact during the operation of the system is monitored in real time, and corresponding protection measures are taken. Environmental protection measures include exhaust gas treatment, wastewater treatment and noise control to ensure that the emissions generated during the operation of the system meet environmental protection standards. The exhaust gas treatment system adopts high-efficiency adsorption and catalytic technology to effectively remove harmful gases; the wastewater treatment system adopts a multi-stage treatment process to ensure that the water quality of the discharged wastewater meets the standards; noise control measures use low-noise equipment and sound insulation devices to reduce noise pollution during the operation of the system. This comprehensive environmental protection design ensures that the system minimizes the negative impact on the environment while achieving efficient energy utilization, thereby improving the environmental performance of the system.

[0125] 6. Intelligence and automation: That is, the present invention widely applies the Internet of Things, big data and artificial intelligence technologies to realize the intelligent and automated management of the system. Through the intelligent control system and sensor network, the operating status of each module is monitored and adjusted in real time to ensure the efficient and stable operation of the system. The data analysis platform integrates big data processing and machine learning algorithms, and can optimize the system's operating strategy based on historical operating data and environmental change trends, and realize adaptive adjustment and self-optimization. The application of intelligent and automated technologies not only improves the operating efficiency and stability of the system, but also simplifies the operation and maintenance process, reducing labor costs and management difficulties.

[0126] Example 1: Application of photovoltaic dynamic electrolysis hydrogen production and seawater desalination device in coastal industrial areas

[0127] A photovoltaic dynamic electrolysis hydrogen production and seawater desalination device is installed in the coastal industrial zone to provide clean energy and fresh water resources for industrial production. It consists of photovoltaic power generation module, electrolysis hydrogen production module, seawater desalination module, energy storage module, power management module and control module.

[0128] In this embodiment, the system configuration and parameters are as follows:

[0129] For photovoltaic power generation modules, installed capacity: 5MW; photoelectric conversion efficiency: 20%; annual power generation: about 8000MWh.

[0130] For the electrolytic hydrogen production module, the number of electrolytic cells: 50; the hydrogen production capacity of a single cell: 100Nm 3 / h; Total hydrogen production capacity: 5000Nm 3 / h; electrolysis efficiency: 70%.

[0131] For seawater desalination module, reverse osmosis device: 4 sets; single set processing capacity: 500m 3 / d; Total processing capacity: 2000m 3 / d; desalination rate: 99%.

[0132] For the energy storage module and power management module, the energy storage battery type: lithium iron phosphate battery; energy storage capacity: 1000kWh; charging and discharging efficiency: 90%.

[0133] For system operation: The photovoltaic power generation module uses solar energy to generate electricity during the day, and the excess electricity is stored in the energy storage battery, which provides power support at night or when there is insufficient light. The electrolysis hydrogen production module dynamically adjusts the electrolysis current and voltage according to the real-time power of photovoltaic power generation to achieve an efficient and stable hydrogen production process. The generated hydrogen is stored in a high-pressure hydrogen storage tank and transported to the application equipment or hydrogen refueling station in the industrial area through a hydrogen pipeline.

[0134] The desalination module uses the waste heat generated during the electrolytic hydrogen production process to improve the desalination efficiency. After multiple stages of treatment, the fresh water is transported to the industrial area through the pipeline network for use by the factory. The intelligent control system monitors and adjusts each module in real time to ensure the efficient and stable operation of the system.

[0135] In this embodiment, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination device has the following technical effects:

[0136] The annual power generation is about 8,000MWh, which can produce 45 million cubic meters of hydrogen and about 730,000 cubic meters of desalinated water, greatly alleviating the industrial zone's dependence on traditional energy and fresh water resources. Through dynamic electrolysis control and heat recovery technology, the overall energy efficiency of the system has been significantly improved, while reducing carbon emissions and environmental pollution, promoting the green transformation and sustainable development of the industrial zone.

[0137] Example 2: Application of photovoltaic dynamic electrolysis hydrogen production and seawater desalination device in island areas

[0138] A set of photovoltaic dynamic electrolysis hydrogen production and seawater desalination equipment is deployed in the island area to solve the problem of energy shortage and lack of fresh water resources on the island. It includes photovoltaic power generation module, electrolysis hydrogen production module, seawater desalination module, energy storage module, control module, power management module and environmental monitoring and protection module.

[0139] In this embodiment, the system configuration and parameters are as follows:

[0140] For photovoltaic power generation modules, installed capacity: 2MW; photoelectric conversion efficiency: 18%; annual power generation: about 3200MWh.

[0141] For the electrolytic hydrogen production module, the number of electrolytic cells: 20; the hydrogen production capacity of a single cell: 50Nm 3 / h; Total hydrogen production capacity: 1000Nm 3 / h; electrolysis efficiency: 75%.

[0142] For seawater desalination module, reverse osmosis device: 2 sets; single set processing capacity: 200m 3 / d; Total processing capacity: 400m 3 / d; desalination rate: 98%.

[0143] For the energy storage module and power management module, the energy storage battery type: lithium-ion battery; energy storage capacity: 500kWh; charging and discharging efficiency: 92%.

[0144] For the environmental monitoring and protection module, gas concentration monitoring: 0-100ppm; temperature monitoring range: -40℃-100℃; noise control measures: ≥20dB reduction.

[0145] For system operation: the photovoltaic power generation module provides clean electricity for the system, and the energy storage module provides power support when the sunlight is insufficient. The electrolysis hydrogen production module dynamically adjusts the electrolysis parameters to ensure the efficiency and stability of the hydrogen production process. The generated hydrogen is stored in high-pressure hydrogen storage tanks and transported to hydrogen energy application equipment on the island.

[0146] The desalination module uses the waste heat from electrolytic hydrogen production for efficient desalination, and the treated fresh water is stored in a circulating water tank for use by residents and tourist facilities. The environmental monitoring and protection module monitors the environmental impact of system operation in real time, ensures that emissions meet environmental standards, and takes measures to reduce noise and exhaust emissions.

[0147] In this embodiment, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination device has the following technical effects:

[0148] The annual power generation is about 3,200MWh, the annual hydrogen production is about 8.76 million cubic meters, and the annual desalinated water volume is about 146,000 cubic meters. Through the multifunctional integrated design, the energy utilization efficiency and resource utilization rate are significantly improved, the energy and fresh water shortage problems in the island area are solved, the quality of life of residents and the level of tourism services are improved, and the efficient application of renewable energy and environmental protection are achieved.

[0149] Example 3: Application of photovoltaic dynamic electrolysis hydrogen production and seawater desalination device in urban sewage treatment plants

[0150] A photovoltaic dynamic electrolysis hydrogen production and seawater desalination device is installed in the urban sewage treatment plant to provide clean energy for sewage treatment and use the treated water for electrolysis hydrogen production and seawater desalination. It includes photovoltaic power generation module, electrolysis hydrogen production module, seawater desalination module, energy storage module and power management module, water treatment and reuse module.

[0151] In this embodiment, the system configuration and parameters are as follows:

[0152] For photovoltaic power generation modules, installed capacity: 3MW; photoelectric conversion efficiency: 19%; annual power generation: approximately 4,800MWh.

[0153] For the electrolytic hydrogen production module, the number of electrolytic cells: 30; the hydrogen production capacity of a single cell: 75Nm 3 / h; Total hydrogen production capacity: 2250Nm 3 / h; electrolysis efficiency: 72%.

[0154] For seawater desalination module, reverse osmosis device: 3 sets; single set processing capacity: 300m 3 / d; Total processing capacity: 900m 3 / d; desalination rate: 97%.

[0155] For the energy storage module and power management module, the energy storage battery type: lithium-ion battery; energy storage capacity: 800kWh; charge and discharge efficiency: 91%;

[0156] For water treatment and reuse module, pre-treatment device processing capacity: 5m 3 / h; circulating water tank capacity: 5m 3 ; Water quality monitoring parameters: pH value, conductivity, dissolved oxygen content, etc.

[0157] For system operation: The photovoltaic power generation module provides clean electricity for the sewage treatment plant, and the excess electricity is stored in the energy storage battery and used at night or when there is insufficient light. The electrolysis hydrogen production module uses the treated sewage to electrolyze hydrogen, and ensures the efficiency and stability of the electrolysis process through dynamic control. The generated hydrogen is stored in a high-pressure hydrogen storage tank and transported to hydrogen energy application equipment or hydrogen refueling stations.

[0158] The desalination module uses the waste heat generated during the electrolytic hydrogen production process to efficiently desalinate the water, and the treated fresh water is used for in-plant and municipal water supply. The water treatment and reuse module pre-treats and recycles the sewage to ensure that the water quality of the electrolyzer and desalination device meets the requirements.

[0159] In this embodiment, the photovoltaic dynamic electrolysis hydrogen production and seawater desalination device has the following technical effects:

[0160] The annual power generation is about 4,800MWh, the annual hydrogen production is about 15.7 million cubic meters, the annual desalinated water volume is about 328,000 cubic meters, and the recycled volume of treated sewage is about 43,800 cubic meters. The photovoltaic dynamic electrolysis hydrogen production and seawater desalination device significantly improves the energy efficiency and resource utilization of the sewage treatment plant through the comprehensive application of photovoltaic power generation, electrolysis hydrogen production and seawater desalination, reduces dependence on traditional energy and freshwater resources, and promotes the green transformation and sustainable development of urban sewage treatment.

[0161] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A photovoltaic dynamic electrolysis hydrogen production and seawater desalination device, characterized in that: include: A photovoltaic power generation module, which is used to convert solar energy into electrical energy; An electrolytic hydrogen production module, which is connected to the photovoltaic power generation module and is used to electrolyze water into hydrogen and oxygen under the action of the electric energy output by the photovoltaic power generation module; A heat recovery module, which is close to the electrolysis hydrogen production module and is used to recover heat energy generated during the electrolysis process; A seawater desalination module, which is connected to the heat energy recovery module through a pipeline and is used to desalinate seawater under the action of heat energy recovered by the heat energy recovery module to obtain fresh water; The photovoltaic power generation module, the electrolysis hydrogen production module, the heat recovery module and the seawater desalination module are respectively connected to the control module, and the control module is used to monitor the working status of the photovoltaic power generation module, the electrolysis hydrogen production module, the heat recovery module and the seawater desalination module in real time, and perform dynamic adjustments according to real-time data.

2. The photovoltaic dynamic electrolysis hydrogen production and seawater desalination device according to claim 1 is characterized in that: Also included is a hydrogen storage module; The hydrogen storage module is connected to the electrolytic hydrogen production module through a pipeline and is used to store the hydrogen produced by the electrolytic hydrogen production module.

3. The photovoltaic dynamic electrolysis hydrogen production and seawater desalination device according to claim 2 is characterized in that: The hydrogen storage module includes a high-pressure hydrogen storage tank and a low-pressure hydrogen storage tank, wherein the high-pressure hydrogen storage tank is used to store gaseous hydrogen, and the low-pressure hydrogen storage tank is used to store liquid hydrogen; wherein the hydrogen is cooled to a liquid state by liquid hydrogen storage technology.

4. The photovoltaic dynamic electrolysis hydrogen production and seawater desalination device according to claim 2 is characterized in that: Also included is a conveying module; The delivery module is connected to the hydrogen storage module, and the delivery module includes a hydrogen compressor and a delivery pipeline. The input end of the hydrogen compressor is connected to the hydrogen storage module, and the output end is connected to the delivery pipeline. The hydrogen compressor is used to compress hydrogen to a preset pressure.

5. The photovoltaic dynamic electrolysis hydrogen production and seawater desalination device according to claim 1 is characterized in that: It also includes energy storage modules; The energy storage module is connected to the photovoltaic power generation module and is used to store excess electric energy generated by the photovoltaic power generation module.

6. The photovoltaic dynamic electrolysis hydrogen production and seawater desalination device according to claim 1 is characterized in that: Also included is a hydrogen purification module; The hydrogen purification module is connected to the electrolytic hydrogen production module and is used to purify the hydrogen produced by the electrolytic hydrogen production module.

7. The photovoltaic dynamic electrolysis hydrogen production and seawater desalination device according to claim 1 is characterized in that: It also includes a water treatment and reuse module; The water treatment and reuse module is connected to the seawater desalination module and is used to treat and reuse the wastewater generated by the seawater desalination module.

8. The photovoltaic dynamic electrolysis hydrogen production and seawater desalination device according to claim 7 is characterized in that: The water treatment and reuse module includes a pretreatment device, a membrane treatment device and a reuse device; wherein the input end of the pretreatment device is connected to the wastewater outlet of the seawater desalination module, and the output end is connected to the membrane treatment device; the output end of the membrane treatment device is connected to the reuse device; The pretreatment equipment is used to remove suspended matter and large particle impurities in the wastewater through multi-stage filtration and sedimentation; the membrane treatment equipment uses a reverse osmosis membrane or a nanofiltration membrane to remove dissolved salts and organic matter in the wastewater and produce regenerated water; the reuse equipment is used for secondary use of the regenerated water.

9. The photovoltaic dynamic electrolysis hydrogen production and seawater desalination device according to claim 1 is characterized in that: The control module monitors the working status of the photovoltaic power generation module, the electrolysis hydrogen production module, the heat recovery module, and the seawater desalination module in real time, including: The control module adjusts the current and voltage of the electrolytic hydrogen production module in real time according to the power generation of the photovoltaic panels of the photovoltaic power generation module and the hydrogen demand of the electrolytic hydrogen production module; at the same time, the control module dynamically adjusts the heat recovery efficiency of the heat energy recovery module by monitoring the temperature and pressure of the electrolytic cell of the electrolytic hydrogen production module; The control module optimizes the fresh water output rate and energy consumption by adjusting the pressure and flow rate of the reverse osmosis membrane of the seawater desalination module.

10. The photovoltaic dynamic electrolysis hydrogen production and seawater desalination device according to claim 5, characterized in that: The energy storage module includes a battery pack, an inverter and a battery management system; the battery pack includes a lithium-ion battery or a lithium iron phosphate battery, and the inverter is used to convert the direct current output by the battery pack into alternating current; the battery management system is connected to the battery pack and is used to monitor and manage the working status of the battery.

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