High-efficiency photovoltaic hydrogen production power supply energy management system

Abstract

The invention relates to the technical field of photovoltaic hydrogen production, in particular to a high-efficiency photovoltaic hydrogen production power supply energy management system, which realizes high-efficiency utilization and stable hydrogen production of a photovoltaic power supply by integrating an advanced energy management strategy, an intelligent control algorithm and a high-efficiency energy conversion and storage technology. The system can realize continuous and stable hydrogen production under an unstable photovoltaic power supply condition, meanwhile, the comprehensive utilization efficiency of energy is improved, and the hydrogen production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic hydrogen production, and in particular to a high-efficiency photovoltaic hydrogen production power supply energy management system. Background Art

[0002] With the continuous growth of global energy demand and the increasing awareness of environmental protection, the development and utilization of renewable energy has become the focus of attention of all countries. Photovoltaic energy, as a clean and renewable energy form, is increasingly widely used in the energy field. However, the instability of photovoltaic power supply and the energy loss problem in the process of water electrolysis to produce hydrogen have always been the key factors restricting the development of photovoltaic hydrogen production technology. Therefore, the development of a high-efficiency photovoltaic hydrogen production power energy management system to achieve efficient utilization of photovoltaic power supply and stable hydrogen production has important practical significance and broad application prospects. Summary of the invention

[0003] The purpose of the present invention is to provide a high-efficiency photovoltaic hydrogen production power supply energy management system to solve the problems raised in the background technology and facilitate promotion.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0005] A high-efficiency photovoltaic hydrogen production power energy management system, which mainly includes the following components and features:

[0006] a. Photovoltaic power module;

[0007] b. Power conversion and storage module;

[0008] c. Hydrogen production module;

[0009] d. Intelligent energy dispatching platform.

[0010] Furthermore, the photovoltaic power module includes the following components and features:

[0011] a. Photovoltaic cell assembly: The photovoltaic cell assembly is the core of the photovoltaic power module. It can directly convert solar energy into electrical energy. It is usually composed of multiple photovoltaic cell units connected in series or in parallel to form the required voltage and current output;

[0012] b. Maximum Power Point Tracking (MPPT) Circuit: The MPPT circuit is used to monitor the output power of the photovoltaic cell module in real time and automatically adjust its operating point so that it always works near the maximum power point, thereby maximizing the use of solar energy. By comparing the actual output power of the photovoltaic cell module with the preset maximum power point output power, the parameters in the circuit are adjusted to maximize the output power of the photovoltaic cell module;

[0013] c. Protection circuit: used to protect photovoltaic cell modules from damage caused by overcurrent, overvoltage and short circuit. The protection circuit includes fuses, circuit breakers, overcurrent protectors and overvoltage protectors;

[0014] d. Connection and packaging: connect and package the photovoltaic cell assembly, MPPT circuit and protection circuit to form a complete photovoltaic power module;

[0015] e. Bracket and mounting system.

[0016] Furthermore, the power conversion and storage module includes the following components and features:

[0017] a. Power converter: The power converter is the core device of the power conversion and storage module. It is responsible for converting the DC power output by the photovoltaic power module into DC power suitable for electrolysis of water to produce hydrogen, while achieving stable output of power;

[0018] b. Battery pack: The battery pack is used to store excess electricity to meet the energy demand when the photovoltaic power source is insufficient. When there is insufficient sunlight or the photovoltaic power source cannot provide sufficient electricity at night, it provides stable power input for the hydrogen production module;

[0019] c. Supercapacitor bank: As a supplement or replacement for the battery bank, the supercapacitor bank has higher power density and faster charging and discharging speed. It can provide a large amount of electrical energy in a short time to cope with the energy demand of the hydrogen production module during startup or transient load changes;

[0020] d. Control system and protection circuit: The control system and protection circuit are responsible for monitoring the working status of the power converter, battery pack and supercapacitor pack to ensure their safe operation. At the same time, the control system can intelligently dispatch and distribute electric energy according to the needs of the hydrogen production module and the power supply of the photovoltaic power module.

[0021] Furthermore, the hydrogen production module includes the following components and features:

[0022] a. Electrolyzer: The electrolyzer is the core equipment of the hydrogen production module, which uses electricity to decompose water into hydrogen and oxygen;

[0023] b. Hydrogen storage device: The hydrogen storage device is used to store the hydrogen generated by the electrolyzer for use when needed. The hydrogen storage device stores hydrogen inside the device through physical or chemical methods and outputs the hydrogen through a release mechanism when needed;

[0024] c. Hydrogen purification device: used to remove impurities in the hydrogen produced by the electrolyzer to improve the purity and quality of hydrogen;

[0025] d. Control system and monitoring equipment: responsible for monitoring the working status of the hydrogen production module, ensuring the safe operation of the electrolyzer, hydrogen storage device and hydrogen purification device. At the same time, the control system intelligently adjusts the working parameters of the electrolyzer according to the system requirements and the power provided by the power conversion and storage module to achieve the best hydrogen production efficiency.

[0026] Furthermore, the energy intelligent scheduling platform includes the following components and features:

[0027] a. Data acquisition and monitoring system: responsible for real-time collection of operating data of photovoltaic power modules, power conversion and storage modules, and hydrogen production modules, including voltage, current, power, temperature, and pressure;

[0028] b. Data analysis and optimization system: responsible for in-depth analysis of the collected data to find out the unreasonableness in the energy flow and propose optimization solutions. It can automatically identify and predict the energy demand of the system, so as to intelligently adjust the output power of the photovoltaic power module, the energy storage and discharge strategy of the power conversion and storage module, and the electrolysis rate of the hydrogen production module to achieve efficient energy utilization and stable operation of the system;

[0029] c. Energy management system: responsible for the management and scheduling of the energy of the entire system to ensure that the energy supply of the system meets the needs of hydrogen production. According to the optimization plan provided by the data analysis and optimization system, the operation strategy of the photovoltaic power module, the power conversion and storage module, and the hydrogen production module is intelligently scheduled to maximize the utilization of energy and minimize the energy consumption of the system. At the same time, the system interacts with the external energy market to realize the sale and transaction of energy;

[0030] d. User interface and interactive system: responsible for providing users with an intuitive operating interface and convenient interactive methods so that users can easily monitor and manage the operation of the entire system. Users can monitor the operating status of the entire system in real time, view historical data and adjust operating parameters through the user interface and interactive system. At the same time, it can provide users with alarm and early warning functions so that users can promptly discover and handle abnormal situations in the system.

[0031] As an improvement, the beneficial effects of the present invention are:

[0032] 1. Efficient use of photovoltaic power: Through the advanced MPPT algorithm and intelligent scheduling of the energy intelligent scheduling platform, efficient use of photovoltaic power is achieved, improving the overall energy efficiency of the system.

[0033] 2. Stable hydrogen production: Through the energy storage function of the electric energy conversion and storage module and the precise control of the hydrogen production module, continuous and stable hydrogen production is achieved under unstable photovoltaic power conditions.

[0034] 3. Improve the comprehensive utilization efficiency of energy: Through the optimized scheduling of the energy intelligent scheduling platform, the cascade utilization of various energy sources such as electricity, hydrogen, and heat is realized, and the comprehensive utilization efficiency of energy is improved.

[0035] 4. Reduce hydrogen production costs: By optimizing the working conditions of the power conversion and storage module and the hydrogen production module, the system's energy consumption and hydrogen production costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency photovoltaic hydrogen production power supply energy management system of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of the photovoltaic power module of the present invention;

[0038] Figure 3 This is a schematic diagram of the structure of the electric energy conversion and storage module of the present invention;

[0039] Figure 4 This is a schematic diagram of the structure of the hydrogen energy production module of the present invention;

[0040] Figure 5 This is a schematic diagram of the structure of the energy intelligent scheduling platform of the present invention; DETAILED DESCRIPTION

[0041] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0042] A high-efficiency photovoltaic hydrogen production power energy management system, which mainly includes the following components and features:

[0043] a. Photovoltaic power module;

[0044] b. Power conversion and storage module;

[0045] c. Hydrogen production module;

[0046] d. Intelligent energy dispatching platform.

[0047] In this embodiment, the photovoltaic power module includes the following components and features:

[0048] a. Photovoltaic cell assembly: The photovoltaic cell assembly is the core of the photovoltaic power module. It can directly convert solar energy into electrical energy. It is usually composed of multiple photovoltaic cell units connected in series or in parallel to form the required voltage and current output;

[0049] b. Maximum Power Point Tracking (MPPT) Circuit: The MPPT circuit is used to monitor the output power of the photovoltaic cell module in real time and automatically adjust its operating point so that it always works near the maximum power point, thereby maximizing the use of solar energy. By comparing the actual output power of the photovoltaic cell module with the preset maximum power point output power, the parameters in the circuit are adjusted to maximize the output power of the photovoltaic cell module;

[0050] c. Protection circuit: used to protect photovoltaic cell modules from damage caused by overcurrent, overvoltage and short circuit. The protection circuit includes fuses, circuit breakers, overcurrent protectors and overvoltage protectors;

[0051] d. Connection and packaging: connect and package the photovoltaic cell assembly, MPPT circuit and protection circuit to form a complete photovoltaic power module;

[0052] e. Bracket and mounting system.

[0053] Through the above technical solutions, the photovoltaic power module plays a key role in converting solar energy into electrical energy. It converts solar energy into electrical energy through photovoltaic cell components, realizes maximum power point tracking through MPPT circuits, and uses protection circuits to ensure the safe operation of the system. In addition, the connection and packaging as well as the bracket and installation system also provide strong guarantees for the stable operation of the photovoltaic power module.

[0054] In this embodiment, the power conversion and storage module includes the following components and features:

[0055] a. Power converter: The power converter is the core device of the power conversion and storage module. It is responsible for converting the DC power output by the photovoltaic power module into DC power suitable for electrolysis of water to produce hydrogen, while achieving stable output of power;

[0056] b. Battery pack: The battery pack is used to store excess electricity to meet the energy demand when the photovoltaic power source is insufficient. When there is insufficient sunlight or the photovoltaic power source cannot provide sufficient electricity at night, it provides stable power input for the hydrogen production module;

[0057] c. Supercapacitor bank: As a supplement or replacement for the battery bank, the supercapacitor bank has higher power density and faster charging and discharging speed. It can provide a large amount of electrical energy in a short time to cope with the energy demand of the hydrogen production module during startup or transient load changes;

[0058] d. Control system and protection circuit: The control system and protection circuit are responsible for monitoring the working status of the power converter, battery pack and supercapacitor pack to ensure their safe operation. At the same time, the control system can intelligently dispatch and distribute electric energy according to the needs of the hydrogen production module and the power supply of the photovoltaic power module.

[0059] Through the above technical solutions, the power conversion and storage module plays a key role in efficiently converting and storing the power generated by the photovoltaic power module. It converts direct current into power suitable for hydrogen production by electrolysis of water through the power converter, and uses the battery group and supercapacitor group for energy storage and rapid discharge to meet the energy requirements of the hydrogen production module. At the same time, the control system and protection circuit ensure the safe operation and intelligent scheduling of the entire module.

[0060] In this embodiment, the hydrogen production module includes the following components and features:

[0061] a. Electrolyzer: The electrolyzer is the core equipment of the hydrogen production module, which uses electricity to decompose water into hydrogen and oxygen;

[0062] b. Hydrogen storage device: The hydrogen storage device is used to store the hydrogen generated by the electrolyzer for use when needed. The hydrogen storage device stores hydrogen inside the device through physical or chemical methods and outputs the hydrogen through a release mechanism when needed;

[0063] c. Hydrogen purification device: used to remove impurities in the hydrogen produced by the electrolyzer to improve the purity and quality of hydrogen;

[0064] d. Control system and monitoring equipment: responsible for monitoring the working status of the hydrogen production module, ensuring the safe operation of the electrolyzer, hydrogen storage device and hydrogen purification device. At the same time, the control system intelligently adjusts the working parameters of the electrolyzer according to the system requirements and the power provided by the power conversion and storage module to achieve the best hydrogen production efficiency.

[0065] Through the above technical solutions, the hydrogen production module plays a key role in converting electrical energy into hydrogen energy. It decomposes water into hydrogen and oxygen through an electrolyzer, and uses a hydrogen storage device and a hydrogen purification device to store and purify it to obtain high-quality hydrogen. At the same time, the control system and monitoring equipment ensure the safe operation and intelligent scheduling of the entire module.

[0066] In this embodiment, the energy intelligent scheduling platform includes the following components and features:

[0067] a. Data acquisition and monitoring system: responsible for real-time collection of operating data of photovoltaic power modules, power conversion and storage modules, and hydrogen production modules, including voltage, current, power, temperature, and pressure;

[0068] b. Data analysis and optimization system: responsible for in-depth analysis of the collected data to find out the unreasonableness in the energy flow and propose optimization solutions. It can automatically identify and predict the energy demand of the system, so as to intelligently adjust the output power of the photovoltaic power module, the energy storage and discharge strategy of the power conversion and storage module, and the electrolysis rate of the hydrogen production module to achieve efficient energy utilization and stable operation of the system;

[0069] c. Energy management system: responsible for the management and scheduling of the energy of the entire system to ensure that the energy supply of the system meets the needs of hydrogen production. According to the optimization plan provided by the data analysis and optimization system, the operation strategy of the photovoltaic power module, the power conversion and storage module, and the hydrogen production module is intelligently scheduled to maximize the utilization of energy and minimize the energy consumption of the system. At the same time, the system interacts with the external energy market to realize the sale and transaction of energy;

[0070] d. User interface and interactive system: responsible for providing users with an intuitive operating interface and convenient interactive methods so that users can easily monitor and manage the operation of the entire system. Users can monitor the operating status of the entire system in real time, view historical data and adjust operating parameters through the user interface and interactive system. At the same time, it can provide users with alarm and early warning functions so that users can promptly discover and handle abnormal situations in the system.

[0071] Through the above technical solutions, the energy intelligent dispatching platform plays a role in intelligent management and dispatching of the energy of the entire system. It collects the system's operating data in real time through the data acquisition and monitoring system, provides optimization solutions through the data analysis and optimization system, realizes intelligent management and dispatch of energy through the energy management system, and provides users with convenient operation and monitoring methods through the user interface and interactive system. These functions together ensure the efficient, stable and reliable operation of the entire system.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-efficiency photovoltaic hydrogen production power energy management system, which mainly includes the following components and features: a. Photovoltaic power module; b. Power conversion and storage module; c. Hydrogen production module; d. Intelligent energy dispatching platform.

2. A high-efficiency photovoltaic hydrogen production power supply energy management system according to claim 1, characterized in that: The photovoltaic power module includes the following components and features: a. Photovoltaic cell assembly: The photovoltaic cell assembly is the core of the photovoltaic power module. It can directly convert solar energy into electrical energy. It is usually composed of multiple photovoltaic cell units connected in series or in parallel to form the required voltage and current output; b. Maximum Power Point Tracking (MPPT) Circuit: The MPPT circuit is used to monitor the output power of the photovoltaic cell module in real time and automatically adjust its operating point so that it always works near the maximum power point, thereby maximizing the use of solar energy. By comparing the actual output power of the photovoltaic cell module with the preset maximum power point output power, the parameters in the circuit are adjusted to maximize the output power of the photovoltaic cell module; c. Protection circuit: used to protect photovoltaic cell modules from damage caused by overcurrent, overvoltage and short circuit. The protection circuit includes fuses, circuit breakers, overcurrent protectors and overvoltage protectors; d. Connection and packaging: connect and package the photovoltaic cell assembly, MPPT circuit and protection circuit to form a complete photovoltaic power module; e. Bracket and mounting system.

3. A high-efficiency photovoltaic hydrogen production power supply energy management system according to claim 1, characterized in that: The power conversion and storage module includes the following components and features: a. Power converter: The power converter is the core device of the power conversion and storage module. It is responsible for converting the DC power output by the photovoltaic power module into DC power suitable for electrolysis of water to produce hydrogen, while achieving stable output of power; b. Battery pack: The battery pack is used to store excess electricity to meet the energy demand when the photovoltaic power source is insufficient. When there is insufficient sunlight or the photovoltaic power source cannot provide sufficient electricity at night, it provides stable power input for the hydrogen production module; c. Supercapacitor bank: As a supplement or replacement for the battery bank, the supercapacitor bank has higher power density and faster charging and discharging speed. It can provide a large amount of electrical energy in a short time to cope with the energy demand of the hydrogen production module during startup or transient load changes; d. Control system and protection circuit: The control system and protection circuit are responsible for monitoring the working status of the power converter, battery pack and supercapacitor pack to ensure their safe operation. At the same time, the control system can intelligently dispatch and distribute electric energy according to the needs of the hydrogen production module and the power supply of the photovoltaic power module.

4. A high-efficiency photovoltaic hydrogen production power supply energy management system according to claim 1, characterized in that: The hydrogen production module includes the following components and features: a. Electrolyzer: The electrolyzer is the core equipment of the hydrogen production module, which uses electricity to decompose water into hydrogen and oxygen; b. Hydrogen storage device: The hydrogen storage device is used to store the hydrogen generated by the electrolyzer for use when needed. The hydrogen storage device stores hydrogen inside the device through physical or chemical methods and outputs the hydrogen through a release mechanism when needed; c. Hydrogen purification device: used to remove impurities in the hydrogen produced by the electrolyzer to improve the purity and quality of hydrogen; d. Control system and monitoring equipment: responsible for monitoring the working status of the hydrogen production module, ensuring the safe operation of the electrolyzer, hydrogen storage device and hydrogen purification device. At the same time, the control system intelligently adjusts the working parameters of the electrolyzer according to the system requirements and the power provided by the power conversion and storage module to achieve the best hydrogen production efficiency.

5. A high-efficiency photovoltaic hydrogen production power supply energy management system according to claim 1, characterized in that: The energy intelligent scheduling platform includes the following components and features: a. Data acquisition and monitoring system: responsible for real-time collection of operating data of photovoltaic power modules, power conversion and storage modules, and hydrogen production modules, including voltage, current, power, temperature, and pressure; b. Data analysis and optimization system: responsible for in-depth analysis of the collected data to find out the unreasonableness in the energy flow and propose optimization solutions. It can automatically identify and predict the energy demand of the system, so as to intelligently adjust the output power of the photovoltaic power module, the energy storage and discharge strategy of the power conversion and storage module, and the electrolysis rate of the hydrogen production module to achieve efficient energy utilization and stable operation of the system; c. Energy management system: responsible for the management and scheduling of the energy of the entire system to ensure that the energy supply of the system meets the needs of hydrogen production. According to the optimization plan provided by the data analysis and optimization system, the operation strategy of the photovoltaic power module, the power conversion and storage module, and the hydrogen production module is intelligently scheduled to maximize the utilization of energy and minimize the energy consumption of the system. At the same time, the system interacts with the external energy market to realize the sale and transaction of energy; d. User interface and interactive system: responsible for providing users with an intuitive operating interface and convenient interactive methods so that users can easily monitor and manage the operation of the entire system. Users can monitor the operating status of the entire system in real time, view historical data and adjust operating parameters through the user interface and interactive system. At the same time, it can provide users with alarm and early warning functions so that users can promptly discover and handle abnormal situations in the system.

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