Marine photovoltaic power generation energy storage method and device and electronic equipment

Abstract

The invention provides a marine photovoltaic power generation energy storage method and device and electronic equipment, and relates to the technical field of ship energy storage, and the method comprises the steps: obtaining the current illumination intensity; judging whether the current illumination intensity meets preset intensity or not; and when the current illumination intensity meets the preset intensity, switching a marine photovoltaic power generation energy storage mode based on different ship working information. The energy utilization efficiency of the ship is improved, the operation cost is reduced, the stability and reliability of a ship power system are enhanced, and powerful support is provided for green and sustainable development of the ship.

Description

Technical Field

[0001] The present invention relates to the technical field of ship energy storage, and in particular to a ship-based photovoltaic power generation and energy storage method, device and electronic equipment. Background Art

[0002] In the modern shipping industry, with the increasing global awareness of environmental protection and the need to optimize the energy structure, the development of efficient, clean and sustainable ship energy systems has become an inevitable trend in the development of the industry. Traditional ship power systems mainly rely on fossil fuels, which not only have high energy consumption and large emissions, but also high operating costs, which seriously restricts the green development of the shipping industry. To this end, combined with the latest progress in modern power electronics technology, control theory technology, new energy technology and energy storage technology, marine photovoltaic power generation and energy storage systems came into being, providing a new solution for the innovation of ship power systems.

[0003] In recent years, the significant improvement in the efficiency of crystalline silicon solar cells, the rapid development of amorphous silicon solar cell technology, the intelligent and integrated design of photovoltaic modules, and the continuous progress in photovoltaic power generation system energy storage technology and energy storage battery technology have significantly reduced the cost of photovoltaic power generation and energy storage systems, laying a solid foundation for the application of marine photovoltaic power generation and energy storage systems. At the same time, in the face of multiple demands such as reducing system energy consumption, reducing environmental pollution, improving ship maneuverability and reliability, and reducing noise and operating costs, marine photovoltaic power generation and energy storage systems have become one of the key technologies to promote the transformation and upgrading of ship power systems with their unique advantages.

[0004] The photovoltaic energy storage power generation system realizes the direct conversion and efficient utilization of solar energy by combining the power battery energy storage system with the energy required for the operation of some equipment on the ship's switchboard. This system not only innovates the structure of the ship's power system, but also promotes the cleanliness and low carbonization of ship electricity, greatly improving energy utilization efficiency. Especially in hybrid electric system ships, the photovoltaic energy storage power generation system can flexibly respond to complex and changeable navigation conditions and load changes, showing extremely high adaptability and economy.

[0005] At present, the main power sources of hybrid electric system ships include generators, power storage batteries and photovoltaic power generation systems, which are uniformly managed and load distributed by the power management system (PMS). This diversified power configuration solution not only ensures the power demand of ships under various working conditions, but also realizes the optimal configuration and efficient utilization of energy. Among them, photovoltaic power generation systems, as an important renewable energy supplement, are becoming increasingly important.

[0006] Marine photovoltaic power generation systems convert solar energy into DC power, which is then converted into AC power compatible with the ship's power grid or directly supplied to the DC distribution board through photovoltaic combiner boxes and inverters. They have the advantages of renewable energy and flexible layout. However, the volatility and unpredictability of photovoltaic output power, as well as the great influence of weather and environmental conditions, have become the main challenges restricting its widespread application.

[0007] The power energy storage system converts the AC power generated by the generator into DC power through the energy storage inverter to charge the energy storage battery and discharge it to supply power when needed. The system has the advantages of stable and reliable power output, flexible layout, and convenient maintenance. However, its charging power comes from the ship's power grid and fails to directly use renewable energy, so it has limitations in energy saving and consumption reduction.

[0008] Therefore, a method, device and electronic equipment for controlling photovoltaic power generation and energy storage for ships are proposed. Summary of the invention

[0009] This specification provides a method, device and electronic equipment for marine photovoltaic power generation and energy storage, which not only improves the energy utilization efficiency of the ship and reduces the operating cost, but also enhances the stability and reliability of the ship's power system, providing strong support for the green and sustainable development of the ship.

[0010] This specification provides a marine photovoltaic power generation and energy storage method, including:

[0011] Get the current light intensity;

[0012] Determining whether the current light intensity meets a preset intensity;

[0013] When the current light intensity meets the preset intensity, the ship photovoltaic power generation and energy storage mode is switched based on different ship working information.

[0014] Optionally, when the current light intensity meets the preset intensity, switching the marine photovoltaic power generation and energy storage mode based on different ship working information includes:

[0015] The marine photovoltaic power generation and energy storage mode includes a photovoltaic off-grid power generation and energy storage mode;

[0016] When the current light intensity meets the preset intensity, switching to the photovoltaic off-grid power generation and energy storage mode is performed based on the first ship working information, specifically:

[0017] Solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the photovoltaic controller to charge the battery bank and power the DC load.

[0018] Optionally, also include:

[0019] When the current light intensity does not meet the preset intensity, the electric energy is input to the inverter through the battery pack to supply power to the AC load.

[0020] Optionally, when the current illumination intensity meets the preset intensity, switching the marine photovoltaic power generation and energy storage mode based on different ship working information further includes:

[0021] The marine photovoltaic power generation and energy storage mode includes an on-grid and off-grid power generation and energy storage mode;

[0022] When the current light intensity meets the preset intensity, switching to the on-grid and off-grid power generation and energy storage mode is performed based on the second ship working information, specifically:

[0023] The solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the off-grid integrated machine to charge the battery bank, load and / or AC distribution board.

[0024] Optionally, when the current illumination intensity meets the preset intensity, switching the marine photovoltaic power generation and energy storage mode based on different ship working information further includes:

[0025] The marine photovoltaic power generation and energy storage mode includes a photovoltaic grid-connected power generation and energy storage mode;

[0026] When the current light intensity meets the preset intensity, switching to the photovoltaic grid-connected power generation and energy storage mode is performed based on the third ship working information, specifically:

[0027] Convert solar energy into electrical energy through solar photovoltaic panel assemblies and determine solar power;

[0028] Determining whether the solar power meets the current load power;

[0029] When the solar power does not meet the current load power, the electric energy of the solar photovoltaic panel assembly and the electric energy of the power grid are input into the grid-connected controller and then input into the current transformer to power the AC distribution board.

[0030] Optionally, also include:

[0031] When the solar power meets the current load power, the electric energy of the solar photovoltaic panel assembly is input into the grid-connected controller and then input into the current transformer to charge the battery pack and power the AC distribution board.

[0032] Optionally, when the current illumination intensity meets the preset intensity, switching the marine photovoltaic power generation and energy storage mode based on different ship working information further includes:

[0033] The marine photovoltaic power generation and energy storage mode includes a microgrid power generation and energy storage mode;

[0034] When the current light intensity meets the preset intensity, switching to the microgrid power generation and energy storage mode is performed based on the fourth ship working information, specifically:

[0035] Solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the photovoltaic inverter after passing through the photovoltaic combiner box to be converted into AC power. The AC power is input into the isolation transformer to power the AC distribution board, and the AC power is input into the PCS bidirectional inverter to charge the battery pack.

[0036] This specification provides a marine photovoltaic power generation and energy storage device, including

[0037] Acquisition module, used to obtain the current light intensity;

[0038] A judging module, used to judge whether the current light intensity meets a preset intensity;

[0039] The switching module is used to switch the marine photovoltaic power generation and energy storage mode based on different ship working information when the current light intensity meets the preset intensity.

[0040] Optionally, the switching module includes:

[0041] The marine photovoltaic power generation and energy storage mode includes a photovoltaic off-grid power generation and energy storage mode;

[0042] When the current light intensity meets the preset intensity, switching to the photovoltaic off-grid power generation and energy storage mode is performed based on the first ship working information, specifically:

[0043] Solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the photovoltaic controller to charge the battery bank and power the DC load.

[0044] Optionally, also include:

[0045] When the current light intensity does not meet the preset intensity, the electric energy is input to the inverter through the battery pack to supply power to the AC load.

[0046] Optionally, the switching module further includes:

[0047] The marine photovoltaic power generation and energy storage mode includes an on-grid and off-grid power generation and energy storage mode;

[0048] When the current light intensity meets the preset intensity, switching to the on-grid and off-grid power generation and energy storage mode is performed based on the second ship working information, specifically:

[0049] The solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the off-grid integrated machine to charge the battery bank, load and / or AC distribution board.

[0050] Optionally, the switching module further includes:

[0051] The marine photovoltaic power generation and energy storage mode includes a photovoltaic grid-connected power generation and energy storage mode;

[0052] When the current light intensity meets the preset intensity, switching to the photovoltaic grid-connected power generation and energy storage mode is performed based on the third ship working information, specifically:

[0053] Convert solar energy into electrical energy through solar photovoltaic panel assemblies and determine solar power;

[0054] Determining whether the solar power meets the current load power;

[0055] When the solar power does not meet the current load power, the electric energy of the solar photovoltaic panel assembly and the electric energy of the power grid are input into the grid-connected controller and then input into the current transformer to power the AC distribution board.

[0056] Optionally, also include:

[0057] When the solar power meets the current load power, the electric energy of the solar photovoltaic panel assembly is input into the grid-connected controller and then input into the current transformer to charge the battery pack and power the AC distribution board.

[0058] Optionally, the switching module further includes:

[0059] The marine photovoltaic power generation and energy storage mode includes a microgrid power generation and energy storage mode;

[0060] When the current light intensity meets the preset intensity, switching to the microgrid power generation and energy storage mode is performed based on the fourth ship working information, specifically:

[0061] Solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the photovoltaic inverter after passing through the photovoltaic combiner box to be converted into AC power. The AC power is input into the isolation transformer to power the AC distribution board, and the AC power is input into the PCS bidirectional inverter to charge the battery pack.

[0062] This specification also provides an electronic device, wherein the electronic device includes:

[0063] processor; and,

[0064] A memory storing computer executable instructions, which when executed cause the processor to perform any of the above methods.

[0065] The present specification also provides a computer-readable storage medium, wherein the computer-readable storage medium stores one or more programs, and when the one or more programs are executed by a processor, any of the above methods is implemented.

[0066] In this manual, according to the current light intensity and different ship working information, it intelligently switches to the most suitable photovoltaic power generation and energy storage mode, including photovoltaic off-grid power generation and energy storage, off-grid power generation and energy storage, photovoltaic grid-connected power generation and energy storage, and microgrid power generation and energy storage. This intelligent switching mechanism ensures that the ship can obtain a stable and reliable power supply under different working conditions, while maximizing the utilization efficiency of solar energy. In addition, this method also has excellent energy management functions. When there is sufficient light, the system can give priority to using solar energy to charge the battery pack and power the load, reducing dependence on traditional energy. When there is insufficient light, the system can intelligently call the electrical energy stored in the battery pack to power the AC load through the inverter, ensuring the continuous and stable operation of the ship's power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0068] Figure 1 A schematic diagram of the principle of a marine photovoltaic power generation and energy storage method provided in an embodiment of this specification;

[0069] Figure 2 A schematic diagram of a photovoltaic off-grid power generation and energy storage mode provided in the embodiments of this specification;

[0070] Figure 3 A schematic diagram of an on-grid and off-grid power generation and energy storage mode provided in the embodiments of this specification;

[0071] Figure 4 Schematic diagram of photovoltaic grid-connected power generation and energy storage mode provided in the embodiments of this specification;

[0072] Figure 5 Schematic diagram of microgrid power generation and energy storage mode provided in the embodiments of this specification;

[0073] Figure 6 A schematic diagram of the principle of a marine photovoltaic power generation and energy storage device provided in an embodiment of this specification;

[0074] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of this specification;

[0075] Figure 8 A schematic diagram of a computer-readable medium provided for an embodiment of this specification. DETAILED DESCRIPTION

[0076] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0077] The following is combined with Figure 1-8 The exemplary embodiments of the present invention are described more fully. However, the exemplary embodiments can be implemented in various forms, and it should not be understood that the present invention is limited to the embodiments set forth herein. On the contrary, providing these exemplary embodiments can make the present invention more comprehensive and complete, and it is more convenient to fully convey the inventive concept to those skilled in the art. The same reference numerals in the figures represent the same or similar elements, components or parts, and thus their repeated description will be omitted.

[0078] Under the premise of being consistent with the technical concept of the present invention, the features, structures, characteristics or other details described in a specific embodiment do not exclude that they can be combined in one or more other embodiments in a suitable manner.

[0079] In the description of specific embodiments, the features, structures, characteristics or other details described in the present invention are intended to enable those skilled in the art to fully understand the embodiments. However, it does not exclude that those skilled in the art can practice the technical solutions of the present invention without one or more of the specific features, structures, characteristics or other details.

[0080] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0081] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0082] The term "and / or" or "and / or" includes all combinations of any one or more of the associated listed items.

[0083] Figure 1 A schematic diagram of a method for storing photovoltaic power generation on a ship provided in an embodiment of this specification, the method may include:

[0084] S110: Get current light intensity;

[0085] S120: Determine whether the current light intensity meets a preset intensity;

[0086] S130: When the current light intensity meets the preset intensity, the ship photovoltaic power generation and energy storage mode is switched based on different ship working information.

[0087] In the specific implementation of this specification, it is realized by installing a light sensor on the ship, which can measure and record the current light intensity in real time. This data is the basis for subsequent judgment and adjustment of the photovoltaic power generation and energy storage mode. After obtaining the current light intensity, the system needs to compare it with a preset light intensity value. This preset value is set based on factors such as the performance of the ship's photovoltaic power generation and energy storage system, the ship's working requirements, and local weather conditions. If the current light intensity reaches or exceeds this preset value, it can be considered that the light conditions are good and suitable for efficient photovoltaic power generation. If the current light intensity meets the preset conditions, the system will switch the photovoltaic power generation and energy storage mode according to the current working information of the ship, where the working information may include the navigation status of the ship (such as sailing, mooring, anchoring, etc.), load conditions, navigation plans, etc. For example, when the ship is in a sailing state and the load is heavy, the system may select a mode that can maximize the power generation efficiency and store more electricity to ensure that the ship has sufficient power supply. When the ship is moored or anchored, the system may switch to a more energy-saving mode to reduce unnecessary power consumption. In addition, the system may also adjust the output power of photovoltaic power generation and the charging rate of the energy storage system in real time according to changes in light intensity to achieve more efficient and flexible energy management.

[0088] In summary, the shipboard photovoltaic power generation and energy storage system has the ability to make intelligent adjustments according to light intensity and work requirements, which helps to improve the system's power generation efficiency and energy utilization, while also reducing the ship's operating costs and environmental impact.

[0089] Optionally, the S130 includes:

[0090] The marine photovoltaic power generation and energy storage mode includes a photovoltaic off-grid power generation and energy storage mode;

[0091] When the current light intensity meets the preset intensity, switching to the photovoltaic off-grid power generation and energy storage mode is performed based on the first ship working information, specifically:

[0092] Solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the photovoltaic controller to charge the battery bank and power the DC load.

[0093] Optionally, also include:

[0094] When the current light intensity does not meet the preset intensity, the electric energy is input to the inverter through the battery pack to supply power to the AC load.

[0095] In the specific implementation of this specification, Figure 2 As shown in the figure, solar energy is directly converted into electrical energy through the solar photovoltaic panel assembly installed on the ship. The converted electrical energy is first input into the photovoltaic controller. The function of the photovoltaic controller is to ensure the stable output of electrical energy while protecting the photovoltaic panels and battery packs from damage such as overcharging and over-discharging. After being processed by the photovoltaic controller, the electrical energy is transmitted to the battery pack for storage. As an energy storage device, the battery pack can provide power support when there is insufficient sunlight or additional power is needed. In addition to charging the battery pack, the photovoltaic controller can also directly provide power to the DC loads on the ship (such as lighting, communication equipment, etc.).

[0096] When the current light intensity meets the preset intensity, the system will decide whether to switch to the photovoltaic off-grid power generation and energy storage mode based on the first ship working information (such as the ship's navigation status, load demand, energy storage status, etc.). If the first ship working information indicates that the ship is currently in a state suitable for using solar power generation (such as moored, anchored or when the load is low during navigation), the system will switch to this mode.

[0097] The photovoltaic off-grid power generation system does not rely on the power grid, but relies on the working mode of "storing while using" or "storing first and using later". For the first ship working information, that is, ships with small generator capacity or frequent need for power replacement, the off-grid system is very practical. Through photovoltaic power generation and battery energy storage, emergency power supply can be provided under heavy load conditions, without the need to add or start other generators, reducing generator fuel consumption.

[0098] The first ship working information includes that in sea areas far from land, the grid connection may be unstable or non-existent; in inland waterways, although the grid connection may be more stable, the off-grid system can still reduce operating costs by optimizing energy use; for yachts and private boats pursuing a comfortable and environmentally friendly life, the off-grid system can provide clean and quiet electricity and increase the reliability of power supply.

[0099] Optionally, the S130 further includes:

[0100] The marine photovoltaic power generation and energy storage mode includes an on-grid and off-grid power generation and energy storage mode;

[0101] When the current light intensity meets the preset intensity, switching to the on-grid and off-grid power generation and energy storage mode is performed based on the second ship working information, specifically:

[0102] The solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the off-grid integrated machine to charge the battery bank, load and / or AC distribution board.

[0103] In the specific implementation of this specification, Figure 3 As shown in the figure, the solar photovoltaic panel assembly converts solar energy into electrical energy, which is the basic function of the photovoltaic power generation system. The converted electrical energy is input into the off-grid integrated machine. The off-grid integrated machine is a device that integrates multiple functions such as grid-connected inverter, off-grid inverter, charge controller and energy storage management. In the on-grid and off-grid mode, the off-grid integrated machine can intelligently decide whether to operate on the grid, off-grid or switch between the two according to the current light intensity, the power of the battery pack, the load demand of the ship and the state of the power grid (if any). When the light intensity is sufficient, the off-grid integrated machine gives priority to using the electrical energy to charge the battery pack to store excess electrical energy for subsequent use. The off-grid integrated machine can also directly power the DC load and AC load on the ship. For AC loads, the electrical energy will be converted into AC power by the inverter before powering. In some cases, the off-grid integrated machine can also be connected to the AC distribution board to provide power support for more AC loads on the ship.

[0104] When the current light intensity meets the preset intensity, the system will decide whether to switch to the on-grid and off-grid power generation and energy storage mode based on the second ship working information (such as the ship's navigation status, load demand, grid connection status, etc.). If the second ship working information indicates that the ship is currently in a state suitable for using solar power generation, and the grid connection is stable or there is no grid connection demand, the system will switch to the on-grid and off-grid mode.

[0105] When the power distribution board requires high power, the grid-connected and off-grid system can be set to output at rated power, effectively reducing the number of generators in operation, reducing energy consumption and emissions. When the power distribution board is low, the system uses photovoltaic power generation to charge the battery; when the power distribution board requires high power, the battery discharges to supplement the power, and through the rational use of peak and valley capacity, fuel consumption is significantly reduced. In the event of a power outage, the grid-connected and off-grid integrated machine can automatically switch to off-grid working mode, and the photovoltaic system and battery continue to supply power to the load through the inverter to ensure the continuity of power supply.

[0106] The second ship working information includes ships that need to operate under sufficient sunlight and stable grid connection, such as ocean-going ships, inland ships, etc.; ships that have high requirements for power supply stability, such as scientific research vessels, offshore operation platforms, etc.

[0107] Optionally, the S130 further includes:

[0108] The marine photovoltaic power generation and energy storage mode includes a photovoltaic grid-connected power generation and energy storage mode;

[0109] When the current light intensity meets the preset intensity, switching to the photovoltaic grid-connected power generation and energy storage mode is performed based on the third ship working information, specifically:

[0110] Convert solar energy into electrical energy through solar photovoltaic panel assemblies and determine solar power;

[0111] Determining whether the solar power meets the current load power;

[0112] When the solar power does not meet the current load power, the electric energy of the solar photovoltaic panel assembly and the electric energy of the power grid are input into the grid-connected controller and then input into the current transformer to power the AC distribution board.

[0113] In the specific implementation of this specification, Figure 4 As shown, the solar photovoltaic panel assembly converts solar energy into electrical energy and determines the solar power through the corresponding measuring equipment. The system will determine whether the current solar power meets the power demand of the current load of the ship. When the solar power does not meet the current load power, the system will start the grid-connected power supply strategy. In this case, the power generated by the solar photovoltaic panel assembly and the power grid will be input into the grid-connected controller. The grid-connected controller is responsible for intelligently managing and distributing these two types of power to ensure that the AC distribution board obtains a stable and reliable power supply. The current transformer is used to monitor and measure the current output by the grid-connected controller to ensure the stability and safety of the current. Through the current transformer, the system can monitor the size and direction of the current in real time, so as to promptly detect and deal with any potential power problems.

[0114] When the current light intensity meets the preset intensity, the system will decide whether to switch to the photovoltaic grid-connected power generation and energy storage mode based on the working information of the third ship (such as the ship's navigation status, load demand, grid connection status, etc.).

[0115] If the third ship working information indicates that the ship is currently in a state suitable for using solar grid-connected power generation and the grid connection is stable, the system will switch to photovoltaic grid-connected mode.

[0116] The third ship working information includes ships that need to operate under sufficient sunlight and stable grid connection, such as ocean-going ships, inland ships, etc.; ships that have high requirements for power supply stability, such as scientific research vessels, offshore operation platforms, etc.

[0117] When the current sensor detects that current is flowing to the grid, the grid-connected controller will start up and start working quickly. Its intelligence lies in its ability to accurately store the excess power generated by photovoltaic power generation in the battery pack for emergency use. When the load demand of the distribution board increases, the grid-connected controller can timely regulate the battery and safely and stably transmit the stored power to the load through the inverter to ensure the continuous supply of electricity.

[0118] Optionally, also include:

[0119] When the solar power meets the current load power, the electric energy of the solar photovoltaic panel assembly is input into the grid-connected controller and then input into the current transformer to charge the battery pack and power the AC distribution board.

[0120] In the specific implementation of this specification, when the solar power is sufficient to meet the current load power demand, the electric energy converted by the solar photovoltaic panel assembly will be directly input into the grid-connected controller. Subsequently, this part of the electric energy will be monitored and regulated by the current transformer to ensure that it flows stably and safely to two main purposes: one is to charge the battery pack to store excess electric energy; the other is to directly supply the AC distribution board to meet the power demand of various AC loads on the ship.

[0121] Optionally, the S130 further includes:

[0122] The marine photovoltaic power generation and energy storage mode includes a microgrid power generation and energy storage mode;

[0123] When the current light intensity meets the preset intensity, switching to the microgrid power generation and energy storage mode is performed based on the fourth ship working information, specifically:

[0124] Solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the photovoltaic inverter after passing through the photovoltaic combiner box to be converted into AC power. The AC power is input into the isolation transformer to power the AC distribution board, and the AC power is input into the PCS bidirectional inverter to charge the battery pack.

[0125] In the specific implementation of this specification, Figure 5As shown in the figure, the solar photovoltaic panel assembly is responsible for converting solar energy into electrical energy, which is the basic function of the photovoltaic power generation system. The converted electrical energy is first merged and preliminarily processed by the photovoltaic combiner box. Subsequently, the electrical energy is input into the photovoltaic inverter and converted into AC power. The photovoltaic inverter is a key device in the photovoltaic power generation system, which is responsible for converting DC power into AC power to meet the needs of the ship's power system. Part of the converted AC power is input into the isolation transformer. The isolation transformer is used to improve the quality of electric energy and ensure that the AC distribution board obtains a stable and safe power supply. The other part of the AC power is input into the PCS (Power Conversion System) bidirectional inverter. The PCS bidirectional inverter can not only convert AC power into DC power to charge the battery pack, but also convert the DC power in the battery pack into AC power when needed to provide power support for the ship's power system. In the microgrid power generation and energy storage mode, the entire ship's power system forms a microgrid. The microgrid has the characteristics of autonomy, flexibility and reliability, and can intelligently manage the distribution and use of electric energy according to factors such as the ship's power demand, light conditions and the energy storage status of the battery pack.

[0126] When the current light intensity meets the preset intensity, the system will decide whether to switch to the microgrid power generation and energy storage mode based on the fourth ship working information (such as the ship's navigation status, load demand, battery pack power, etc.).

[0127] If the fourth ship working information indicates that the ship is currently in a state suitable for using a solar microgrid for power supply, the system will switch to the microgrid power generation and energy storage mode.

[0128] The fourth ship working information includes ships that need sufficient sunlight and have high requirements for stable power supply, such as ocean-going ships, scientific research survey vessels, etc.; ships that need to frequently enter and exit ports or sail in different sea areas, because the power demand of these ships may be affected by various factors, such as weather conditions, sea conditions, etc.

[0129] Microgrids can fully and effectively tap the potential of distributed clean energy, reduce unfavorable factors such as small capacity, unstable power generation, and low reliability of independent power supply, ensure the safe operation of the power grid, and are a beneficial supplement to large power grids. Microgrids can promote the upgrading of the traditional shipbuilding industry and play a huge role from the perspective of economy and environmental protection. Microgrids are flexible in application and can range from several kilowatts to tens of megawatts. Ships that need to expand capacity or have functional needs can develop microgrids.

[0130] In this manual, according to the current light intensity and different ship working information, it intelligently switches to the most suitable photovoltaic power generation and energy storage mode, including photovoltaic off-grid power generation and energy storage, off-grid power generation and energy storage, photovoltaic grid-connected power generation and energy storage, and microgrid power generation and energy storage. This intelligent switching mechanism ensures that the ship can obtain a stable and reliable power supply under different working conditions, while maximizing the utilization efficiency of solar energy. In addition, this method also has excellent energy management functions. When there is sufficient light, the system can give priority to using solar energy to charge the battery pack and power the load, reducing dependence on traditional energy. When there is insufficient light, the system can intelligently call the electrical energy stored in the battery pack to power the AC load through the inverter, ensuring the continuous and stable operation of the ship's power system.

[0131] Figure 6 A schematic diagram of the principle of a marine photovoltaic power generation and energy storage device provided in an embodiment of this specification, the device may include:

[0132] An acquisition module 10 is used to acquire the current light intensity;

[0133] A judging module 20 is used to judge whether the current light intensity meets a preset intensity;

[0134] The switching module 30 is used to switch the marine photovoltaic power generation and energy storage mode based on different ship working information when the current light intensity meets the preset intensity.

[0135] Optionally, the switching module 30 includes:

[0136] The marine photovoltaic power generation and energy storage mode includes a photovoltaic off-grid power generation and energy storage mode;

[0137] When the current light intensity meets the preset intensity, switching to the photovoltaic off-grid power generation and energy storage mode is performed based on the first ship working information, specifically:

[0138] Solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the photovoltaic controller to charge the battery bank and power the DC load.

[0139] Optionally, also include:

[0140] When the current light intensity does not meet the preset intensity, the electric energy is input to the inverter through the battery pack to supply power to the AC load.

[0141] Optionally, the switching module 30 further includes:

[0142] The marine photovoltaic power generation and energy storage mode includes an on-grid and off-grid power generation and energy storage mode;

[0143] When the current light intensity meets the preset intensity, switching to the on-grid and off-grid power generation and energy storage mode is performed based on the second ship working information, specifically:

[0144] The solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the off-grid integrated machine to charge the battery bank, load and / or AC distribution board.

[0145] Optionally, the switching module 30 further includes:

[0146] The marine photovoltaic power generation and energy storage mode includes a photovoltaic grid-connected power generation and energy storage mode;

[0147] When the current light intensity meets the preset intensity, switching to the photovoltaic grid-connected power generation and energy storage mode is performed based on the third ship working information, specifically:

[0148] Convert solar energy into electrical energy through solar photovoltaic panel assemblies and determine solar power;

[0149] Determining whether the solar power meets the current load power;

[0150] When the solar power does not meet the current load power, the electric energy of the solar photovoltaic panel assembly and the electric energy of the power grid are input into the grid-connected controller and then input into the current transformer to power the AC distribution board.

[0151] Optionally, also include:

[0152] When the solar power meets the current load power, the electric energy of the solar photovoltaic panel assembly is input into the grid-connected controller and then input into the current transformer to charge the battery pack and power the AC distribution board.

[0153] Optionally, the switching module 30 further includes:

[0154] The marine photovoltaic power generation and energy storage mode includes a microgrid power generation and energy storage mode;

[0155] When the current light intensity meets the preset intensity, switching to the microgrid power generation and energy storage mode is performed based on the fourth ship working information, specifically:

[0156] Solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the photovoltaic inverter after passing through the photovoltaic combiner box to be converted into AC power. The AC power is input into the isolation transformer to power the AC distribution board, and the AC power is input into the PCS bidirectional inverter to charge the battery pack.

[0157] The functions of the device in the embodiment of the present invention have been described in the above method embodiment, so for details not provided in the description of this embodiment, please refer to the relevant description in the above embodiment, and no further description will be given here.

[0158] Based on the same inventive concept, an embodiment of this specification also provides an electronic device.

[0159] The following describes an electronic device embodiment of the present invention, which can be regarded as a specific physical implementation of the method and device embodiments of the present invention. The details described in the electronic device embodiment of the present invention should be regarded as a supplement to the above method or device embodiments; details not disclosed in the electronic device embodiment of the present invention can be implemented with reference to the above method or device embodiments.

[0160] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this specification. Figure 7 The electronic device 300 according to the embodiment of the present invention is described. Figure 7 The electronic device 300 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0161] like Figure 7 As shown, the electronic device 300 is in the form of a general computing device. The components of the electronic device 300 may include, but are not limited to: at least one processing unit 310, at least one storage unit 320, a bus 330 connecting different system components (including the storage unit 320 and the processing unit 310), a display unit 340, etc.

[0162] The storage unit stores program codes, which can be executed by the processing unit 310, so that the processing unit 310 performs the steps according to various exemplary embodiments of the present invention described in the above processing method section of this specification. For example, the processing unit 310 can perform the following steps: Figure 1 Steps shown.

[0163] The storage unit 320 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 3201 and / or a cache memory unit 3202 , and may further include a read-only memory unit (ROM) 3203 .

[0164] The storage unit 320 may also include a program / utility 3204 having a set (at least one) of program modules 3205, such program modules 3205 including but not limited to: an operating system, one or more application programs, other program modules and program data, each of which or some combination may include the implementation of a network environment.

[0165] Bus 330 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0166] The electronic device 300 may also communicate with one or more external devices 400 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), one or more devices that enable viewers to interact with the electronic device 300, and / or any device that enables the electronic device 300 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed through an input / output (I / O) interface 350. Furthermore, the electronic device 300 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter 360. The network adapter 360 may communicate with other modules of the electronic device 300 through the bus 330. It should be understood that although Figure 7 Not shown, other hardware and / or software modules may be used in conjunction with the electronic device 300, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0167] Through the description of the above implementation methods, it is easy for those skilled in the art to understand that the exemplary embodiments described in the present invention can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation method of the present invention can be embodied in the form of a software product, which can be stored in a computer-readable storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.) or on a network, including a number of instructions to enable a computing device (which can be a personal computer, server, or network device, etc.) to execute the above method according to the present invention. When the computer program is executed by a data processing device, the computer-readable medium can implement the above method of the present invention, that is: Figure 1 The method shown.

[0168] Figure 8 A schematic diagram of a computer-readable medium provided for an embodiment of this specification.

[0169] accomplish Figure 1The computer program of the method shown can be stored on one or more computer readable media. The computer readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0170] The computer readable storage medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a readable program code is carried. This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. The readable storage medium may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by an instruction execution system, an apparatus, or a device or used in combination with it. The program code contained on the readable storage medium may be transmitted with any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the above.

[0171] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the viewer computing device, partially on the viewer device, as a stand-alone software package, partially on the viewer computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the viewer computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0172] In summary, the present invention can be implemented in hardware, or in a software module running on one or more processors, or in a combination thereof. It should be understood by those skilled in the art that general data processing devices such as microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components in the embodiments of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can have the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0173] The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the present invention is not inherently related to any specific computer, virtual device or electronic device, and various general devices can also implement the present invention. The above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0174] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0175] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A method for controlling photovoltaic power generation and energy storage for ships, characterized in that: include: Get the current light intensity; Determining whether the current light intensity meets a preset intensity; When the current light intensity meets the preset intensity, the ship photovoltaic power generation and energy storage mode is switched based on different ship working information.

2. The marine photovoltaic power generation and energy storage system according to claim 1, characterized in that: When the current light intensity meets the preset intensity, switching the marine photovoltaic power generation and energy storage mode based on different ship working information includes: The marine photovoltaic power generation and energy storage mode includes a photovoltaic off-grid power generation and energy storage mode; When the current light intensity meets the preset intensity, switching to the photovoltaic off-grid power generation and energy storage mode is performed based on the first ship working information, specifically: Solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the photovoltaic controller to charge the battery bank and power the DC load.

3. The marine photovoltaic power generation and energy storage system according to claim 2, characterized in that: Also includes: When the current light intensity does not meet the preset intensity, the electric energy is input to the inverter through the battery pack to supply power to the AC load.

4. The marine photovoltaic power generation and energy storage system according to claim 1, characterized in that: When the current light intensity meets the preset intensity, switching the marine photovoltaic power generation and energy storage mode based on different ship working information also includes: The marine photovoltaic power generation and energy storage mode includes an on-grid and off-grid power generation and energy storage mode; When the current light intensity meets the preset intensity, switching to the on-grid and off-grid power generation and energy storage mode is performed based on the second ship working information, specifically: The solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the off-grid integrated machine to charge the battery bank, load and / or AC distribution board.

5. The marine photovoltaic power generation and energy storage system according to claim 1, characterized in that: When the current light intensity meets the preset intensity, switching the marine photovoltaic power generation and energy storage mode based on different ship working information also includes: The marine photovoltaic power generation and energy storage mode includes a photovoltaic grid-connected power generation and energy storage mode; When the current light intensity meets the preset intensity, switching to the photovoltaic grid-connected power generation and energy storage mode is performed based on the third ship working information, specifically: Convert solar energy into electrical energy through solar photovoltaic panel assemblies and determine solar power; Determining whether the solar power meets the current load power; When the solar power does not meet the current load power, the electric energy of the solar photovoltaic panel assembly and the electric energy of the power grid are input into the grid-connected controller and then input into the current transformer to power the AC distribution board.

6. The marine photovoltaic power generation and energy storage system according to claim 5, characterized in that: Also includes: When the solar power meets the current load power, the electric energy of the solar photovoltaic panel assembly is input into the grid-connected controller and then input into the current transformer to charge the battery pack and power the AC distribution board.

7. The marine photovoltaic power generation and energy storage system according to claim 1, characterized in that: When the current light intensity meets the preset intensity, switching the marine photovoltaic power generation and energy storage mode based on different ship working information also includes: The marine photovoltaic power generation and energy storage mode includes a microgrid power generation and energy storage mode; When the current light intensity meets the preset intensity, switching to the microgrid power generation and energy storage mode is performed based on the fourth ship working information, specifically: Solar energy is converted into electrical energy through the solar photovoltaic panel assembly, and the electrical energy is input into the photovoltaic inverter after passing through the photovoltaic combiner box to be converted into AC power. The AC power is input into the isolation transformer to power the AC distribution board, and the AC power is input into the PCS bidirectional inverter to charge the battery pack.

8. A marine photovoltaic power generation and energy storage control device, characterized in that: include: Acquisition module, used to obtain the current light intensity; A judging module, used to judge whether the current light intensity meets a preset intensity; The switching module is used to switch the marine photovoltaic power generation and energy storage mode based on different ship working information when the current light intensity meets the preset intensity.

9. An electronic device, wherein: The electronic device includes: processor; and, A memory storing computer executable instructions which, when executed, cause the processor to perform a method according to any one of claims 1-7.

10. A computer-readable storage medium, wherein the computer-readable storage medium stores one or more programs, and when the one or more programs are executed by a processor, the method of any one of claims 1 to 7 is implemented.

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