Light-energy-storage-starting integrated intelligent power supply system and method for ship

Abstract

The invention discloses an optical energy storage and starting integrated intelligent power supply system and method for a ship, and the system comprises a photovoltaic power generation module which is used for converting solar energy into electric energy through a photovoltaic effect, and carrying out the power supply support and energy storage support based on the converted electric energy; the sodium ion energy storage module is used for storing part of the converted electric energy and carrying out selective charging and discharging according to the power supply energy condition and the power supply time period; the ship intelligent energy management system can be constructed based on the collaborative architecture of the sodium ion battery and the solar energy storage system, the comprehensive utilization rate of energy and the reliability of the system are remarkably improved through a light-storage complementary mechanism, and the ship industry is promoted to be transformed to be green and low-carbon.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy, and specifically, the present invention is applied to the ship field, and particularly relates to an integrated ship photovoltaic energy storage starting intelligent power supply system and method. Background Art

[0002] With the transformation of the global shipping industry towards green and intelligent directions, the energy efficiency level, safety, and environmental protection attributes of ship power systems have become key factors restricting the development of the industry; currently, ship power systems mainly rely on two technical routes: lead-acid battery energy storage and fuel power, but both have significant technical bottlenecks and are difficult to meet the requirements of the modern shipping industry for efficient, safe, and sustainable energy solutions, as follows: First, the inherent defects of lead-acid battery energy storage technology: Currently, lead-acid batteries are generally used in ship energy storage systems, but their technical limitations result in limited operation efficiency and reliability, including: (1) Low charging efficiency: The charging speed of lead-acid batteries is slow, and the conventional charging cycle takes several hours to dozens of hours, resulting in a significant extension of the ship's port charging time and seriously affecting the shipping scheduling efficiency.

[0003] (2) High self-discharge rate: Under the long-term out-of-service state, the self-discharge rate of lead-acid batteries can reach 10%-20% per month, causing a rapid decay of the ship's standby power reserve and threatening the emergency power supply capacity.

[0004] (3) Poor environmental adaptability: Its performance is significantly affected by temperature and humidity. In a high-temperature environment, the evaporation of the electrolyte is accelerated, resulting in capacity decay. In a humid environment, the electrode plates are easily corroded, and the battery life is shortened by more than 30% under extreme conditions.

[0005] (4) Short cycle life: The cycle life under standard conditions is only 300-500 times. Frequent battery replacement increases the operating cost, and the lead content in waste batteries reaches 30%-35%. The sulfuric acid electrolyte is highly corrosive. If the recycling and treatment are improper, it will cause soil heavy metal pollution and water body acidification.

[0006] (5) Prominent safety hazards: Overcharging and over-discharging are prone to cause thermal runaway, and sulfuric acid leakage accidents may directly threaten the lives of crew members. The International Maritime Organization (IMO) has listed it as a Class C hazard source.

[0007] Second, the structural contradictions of traditional fuel power systems: Although the global "dual carbon" strategy is being promoted, ship fuel power still dominates, and its industrial model has deep drawbacks, including: (1) Extremely high operating costs: The fuel cost of medium and small cargo ships accounts for more than 90% of the total transportation cost, and the significant fluctuations in international oil prices significantly affect the economic efficiency of the industry.

[0008] (2) Low standardization level: There is a non-standard contradiction between the shipyard construction system and the shipowner's needs, resulting in repeated investment in ship design and a 15%-20% extension of the construction cycle.

[0009] (3) Imbalance between supply and demand adaptation: The upgrade of traditional power systems is limited by the difficulty of hull structure transformation, and it is difficult to match the actual operation needs of shipowners with the technical solutions of shipyards.

[0010] (4) Environmental protection compliance pressure: The SOx and NOx emissions of fuel-powered ships account for 3% of the global anthropogenic emissions, which is fundamentally in conflict with the IMO's goal of reducing greenhouse gas emissions by 50% in 2050.

[0011] In summary, the existing ship power system has a technical triangle contradiction of "charging efficiency - cycle life - environmental adaptability" at the energy management level, and faces an industrial synergy dilemma of "standardized production - customized demand - environmental protection compliance" at the power architecture level. It urgently needs to achieve a systematic breakthrough through the innovation of energy storage media and the reconstruction of the power system topology. Summary of the Invention

[0012] The purpose of the present invention is to provide an integrated photovoltaic energy storage starting intelligent power supply system and method for ships, so as to solve all or one of the above problems existing in the prior art.

[0013] To solve the above technical problems, the specific technical solutions of the present invention are as follows: On the one hand, the present invention provides an integrated photovoltaic energy storage starting intelligent power supply system for ships, including: A photovoltaic power generation module, which is used to convert solar energy into electrical energy through the photovoltaic effect and provide power support and energy storage support based on the converted electrical energy; A sodium-ion energy storage module, which is used to store part of the converted electrical energy and perform selective charge and discharge according to the power supply energy situation and power supply time period; a sodium-ion starting battery that supports high-rate charge and discharge and starts under the conditions of -40°C to +70°C is configured inside the sodium-ion energy storage module.

[0014] As an improved solution, the photovoltaic power generation module includes: a solar energy collection module and an energy conversion module; The solar energy collection module is used to convert sunlight radiation into electrical energy by using the photovoltaic effect under light conditions; The energy conversion module is used to convert the converted electrical energy into alternating current and then provide the power support and the energy storage support.

[0015] As an improved solution, the solar energy collection module uses solar panels; The solar panels include: flexible photovoltaic panels or high-power photovoltaic panels; The solar panels are installed on the top of the ship's cab, in the open area of the ship or on the side of the ship.

[0016] As an improved solution, the flexible photovoltaic panel includes: a copper indium gallium selenide thin-film solar panel using ETFE encapsulation technology; The high-power photovoltaic panel includes: a monocrystalline silicon or polycrystalline silicon photovoltaic panel.

[0017] As an improved solution, the sodium-ion energy storage module includes: a sodium-ion battery cabinet and a battery management module; The sodium-ion battery cabinet is used to store the converted electric energy by using a sodium-ion starting battery; The battery management module is used to monitor the state of the sodium-ion starting battery and control the charge and discharge of the sodium-ion starting battery according to the power supply energy situation and the power supply time period.

[0018] As an improved solution, the battery management module is specifically further used for: when the photovoltaic energy obtained by the photovoltaic power generation module is insufficient, controlling the sodium-ion starting battery to supply power to the ship load.

[0019] As an improved solution, the battery management module is specifically further used for: when the photovoltaic energy obtained by the photovoltaic power generation module is sufficient, using a part of the converted electric energy to charge the sodium-ion starting battery and using another part of the converted electric energy to supply power to the ship load.

[0020] As an improved solution, the battery management module is specifically further used for: charging the sodium-ion starting battery during the low-power consumption period of the ship load by using photovoltaic energy or other charging sources.

[0021] As an improved solution, the battery management module is specifically further used for: supplying power to the ship load during the high-power consumption period of the ship load by using photovoltaic energy or the sodium-ion starting battery.

[0022] On the other hand, the present invention also provides a ship integrated photovoltaic energy storage starting intelligent power supply method, including the following steps: Invoking the photovoltaic power generation module to convert solar energy into electric energy through the photovoltaic effect, and performing power supply support and energy storage support based on the converted electric energy; Invoking the sodium-ion energy storage module to store part of the converted electric energy and performing selective charge and discharge according to the power supply energy situation and the power supply time period.

[0023] The beneficial effects of the technical solution of the present invention are: The integrated intelligent power supply system and method for ships described in the present invention can build a ship intelligent energy management system based on the collaborative architecture of sodium-ion batteries and solar energy storage systems. Through the complementary mechanism of light and storage, the comprehensive energy utilization rate and system reliability can be significantly improved, promoting the transformation of the ship industry towards green and low-carbon development. The application of sodium-ion batteries effectively solves problems such as high self-discharge rate and poor environmental adaptability of traditional lead-acid batteries, and its solid electrolyte design significantly improves safety performance and extreme environment tolerance. Based on the solar energy storage system, efficient conversion and storage of clean energy are realized, effectively reducing ship operation costs while reducing environmental pollution. The technical system of the present invention strengthens the stability and environmental adaptability of the power supply system through multi-energy coupling optimization and intelligent control strategies, simultaneously improving the economy of energy supply and the flexibility of ship operation and maintenance, providing core support for the technological innovation of ship power systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the architecture of the integrated intelligent power supply system for ships described in Embodiment 1 of the present invention; Figure 2 It is a schematic diagram of the topological architecture of the integrated intelligent power supply system for ships described in Embodiment 1 of the present invention; Figure 3 It is a schematic diagram of the process of the integrated intelligent power supply method for ships described in Embodiment 2 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will elaborate on the preferred embodiments of the present invention in conjunction with the drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the embodiments described are some embodiments of the present invention, rather than all embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0028] In the description, claims and the above drawings of this document, terms such as "first", "second", etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this document described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product or equipment comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or equipment. Embodiment 1

[0029] This embodiment provides an integrated intelligent power supply system for ships using photovoltaic energy storage and starting, as Figure 1 and Figure 2 shown, including: A photovoltaic power generation module, at least including: a solar energy collection module and an energy conversion module; Among them, the solar energy collection module uses solar panels, which are used to directly convert solar radiation into electrical energy (in the form of direct current) through the solar photovoltaic effect under light conditions.

[0030] Among them, the energy conversion module is composed of an inverter, a busbar box, cables, etc. It is mainly used to convert direct current into alternating current. After the conversion into alternating current, a part of the electrical energy is directly used by the ship, and the other part of the electrical energy is stored in the sodium-ion energy storage module.

[0031] Specifically, the solar panels are installed on the top of the ship's cab, which can better absorb the solar energy and heat. The finally converted electrical energy will be stored in the ship's battery and the sodium-ion energy storage module by the energy conversion module. It can not only meet the daily electricity consumption of the ship, but also ensure the ship's backup emergency energy; the photovoltaic power generation module based on solar panels can provide pollution-free and noise-free power supply support and achieve energy-saving and emission-reduction support with high energy utilization rate.

[0032] Specifically, the solar panel uses thin-film solar cells, such as copper indium gallium selenide thin-film (CIGS) solar cells. This structure is based on a stainless-steel foil, with a total battery thickness of less than 50 microns and a low weight of 3 kg / m², which will not add excessive load to the ship. At the same time, the battery has a flexible structure, supports 360° winding, and can adapt to various irregular and curved surfaces, with strong universality. In addition, due to its fully flexible structure, it has high seismic resistance and strong impact resistance, a long service life, and strong environmental adaptability. Finally, the battery is encapsulated with ETFE, has a high light transmittance and strong self-cleaning performance, extremely low maintenance costs, no reflection and no light pollution, further improving the comprehensive performance of the photovoltaic power generation module.

[0033] The sodium-ion energy storage module includes at least: a sodium-ion battery cabinet and a battery management module (BMS); Among them, the sodium-ion battery cabinet is used to store the previously obtained electric energy efficiently and safely. It uses a sodium-ion starting battery inside, which supports more stringent usage conditions. Specifically, the sodium-ion starting battery uses a Prussian blue cathode material, has a high energy density, and at the same time has good cycle performance (cycle life > 3000 times, and the retention rate is above 80%), supports one-key start at -40°C to +70°C, has a fast charging speed, a discharge rate of 5C to 10C, and a discharge efficiency of more than 90% at a discharge rate of 2C or more at room temperature.

[0034] It should be noted that the sodium-ion starting battery realizes charge and discharge by the shuttling of sodium ions between the positive and negative electrodes. The charge and discharge process is as follows: i) Charging process: When the battery is charged, the external power supply inputs electric energy into the battery, causing sodium ions (Na⁺) in the cathode material to be deintercalated from the cathode and move through the electrolyte to the anode. At the same time, electrons flow from the external power supply to the anode, and electrons and sodium ions store energy at the anode. For example, when charging, sodium ions are deintercalated from cathode materials such as layered oxides or polyanion compounds, migrate through the electrolyte, and are embedded in anode materials such as hard carbon and sodium titanate.

[0035] ii) Discharging process: During discharging, the process is exactly the opposite. Sodium ions (Na⁺) in the anode move through the electrolyte to the cathode, and electrons flow from the anode through the external circuit to the cathode. During this process, sodium ions are embedded in the cathode, and electrons are deintercalated from the anode, releasing the stored energy. For example, during discharging, sodium ions are deintercalated from the anode material, migrate back to the cathode through the electrolyte, and at the same time electrons flow back to the cathode through the external circuit, thereby releasing electric energy.

[0036] Since the sodium-ion battery electrolyte with the same concentration has a higher ionic conductivity than the lithium-ion battery electrolyte, and at the same time sodium ions have a lower solvation energy in polar solvents, it has faster kinetic properties in the electrolyte and a higher charge and discharge efficiency at a higher rate.

[0037] Among them, the BMS is used to monitor the status of the battery pack, manage the charging and discharging process of the battery pack, and ensure the safe and efficient operation of the battery. For example, the BMS completes the detection and control of the voltage, current, temperature, SOC, SOH and charging and discharging related parameters of the batteries in the sodium-ion battery cabinet. For example, the BMS system controls the discharging process of the sodium-ion starting battery and the charging process of the sodium-ion starting battery by photovoltaic or mains power according to the conditions of the batteries in the sodium-ion battery cabinet, the redundancy of the power supply energy, and the peak and valley periods of electricity consumption, thereby protecting the charging and discharging performance of the battery.

[0038] Specifically, the sodium-ion energy storage module further includes at least: an EMS, a mains charger, a temperature detector and a humidity detector; the mains charger is used to connect to the mains to charge the battery pack in the sodium-ion battery cabinet; the temperature detector and the humidity detector are respectively used to monitor the ambient temperature or humidity around the battery pack in real time, thereby cooperating with the EMS and the BMS to ensure system safety and the charging and discharging performance of the sodium-ion starting battery.

[0039] Specifically, the sodium-ion battery cabinet, EMS, BMS, mains charger, temperature detector and humidity detector adopt an all-in-one design. Taking the sodium-ion battery cabinet as the main body, the EMS, BMS, mains charger, temperature detector and humidity detector are integrated in the sodium-ion battery cabinet; the sodium-ion battery cabinet is a movable cabinet as a whole, and universal wheels are installed at the bottom of the cabinet for easy movement. The inside of the sodium-ion battery cabinet is a whole sodium-ion starting battery, and other components are respectively integrated inside the sodium-ion battery cabinet around the sodium-ion starting battery.

[0040] Specifically, the working mode of the sodium-ion energy storage module is as follows: 1) When the photovoltaic energy is insufficient, the sodium-ion starting battery of the sodium-ion energy storage module is used to supply power to the ship load; 2) When the sodium-ion battery is insufficient, the generator of the ship is used to charge the sodium-ion starting battery and the sodium-ion battery continues to supply power to the ship load; 3) When the photovoltaic energy is sufficient, the sodium-ion starting battery will be charged, and at the same time, the photovoltaic energy will be used to supply power to the ship load; 4) When a device fails, switch to the maintenance bypass for operation; 5) When it is the valley period of electricity consumption of the ship load, the sodium-ion starting battery is charged based on photovoltaic energy or other charging power sources; 6) When it is the peak period of electricity consumption of the ship load, the photovoltaic energy or the electric energy stored in the sodium-ion starting battery is used to supply power to the load device.

[0041] The charging module is usually integrated in the sodium-ion energy storage module, thereby facilitating the charging operation supported by the sodium-ion energy storage module; Among them, the charging sub-module is used to convert external electric energy into sodium-ion energy storage modules for charging through a charging pile or a charging interface.

[0042] In a preferred specific embodiment, different installation methods of the system in different classes of ships are provided as follows: i) First-class ships with a gross tonnage of over 1,600 or a power of over 1,500 kW (2,040 hp): Photovoltaic power generation module: Install high-power photovoltaic panels of 200 kW or more, select monocrystalline or polycrystalline photovoltaic panels, and arrange them in open areas such as the top of the ship. Sodium-ion energy storage module: Adopt a sodium-ion battery pack of ≥2,000 kWh, equipped with an intelligent energy management system. Advantage: This configuration can achieve lower usage and meet the large-capacity energy storage requirements of large ships.

[0043] ii) Second-class ships with a gross tonnage of over 600 to less than 1,600, or a power of over 441 kW (600 hp) to less than 1,500 kW: Photovoltaic power generation module: Install 100-200 kW photovoltaic panels and arrange them on the top of the bridge or the top of the cargo hold. Sodium-ion energy storage module: Adopt 1,000-2,000 kWh sodium-ion batteries, equipped with a dedicated inverter. Advantage: This configuration has high safety and adapts to the energy storage requirements of medium-sized ships.

[0044] iii) Third-class ships with a gross tonnage of over 200 to less than 600, or a power of over 147 kW (200 hp) to less than 441 kW: Photovoltaic power generation module: Install 50-100 kW photovoltaic panels, adopt polycrystalline or thin-film photovoltaic panels, and arrange them in the spare deck area or the top of the cabin. Sodium-ion energy storage module: Adopt 500-1,000 kWh sodium-ion batteries, equipped with charge and discharge monitoring equipment. Advantage: The battery structure of this configuration is simple and easy to maintain, which is suitable for the operation and maintenance characteristics of third-class ships.

[0045] iiii) Fourth-class ships with a gross tonnage of over 50 to less than 200, or a power of over 36.8 kW (50 hp) to less than 147 kW: Photovoltaic power generation module: Install 20-50 kW photovoltaic panels, adopt flexible photovoltaic panels, and arrange them on the side of the ship or a smaller flat area. Sodium-ion energy storage module: Adopt 200-500 kWh sodium-ion batteries, equipped with a small control device. Advantages: This configuration has a lower cost and is suitable for small ships that pursue economy.

[0046] iii) Class V ships with a gross tonnage of less than 50 or a power of less than 36.8 kW, including all oar-propelled ships: Photovoltaic power generation module: Install small photovoltaic panels with a power of less than 10 kW, including but not limited to thin-film photovoltaic panels, and arrange them on sunshades or small platforms; Sodium-ion energy storage module: Use sodium-ion batteries with a capacity of ≤100 kWh and equip them with a simple charge-discharge controller; Advantages: This configuration has better safety, reduces potential safety hazards of small ships, has a simple structure and is easy to operate and maintain, and is suitable for small ships.

[0047] It should be noted that the above examples are only for explaining the present invention and should not limit the protection scope of the present invention. Embodiment 2

[0048] Based on the same inventive concept as the integrated intelligent power supply system for ships using light storage and start described in Embodiment 1, this embodiment provides an integrated intelligent power supply method for ships using light storage and start, as Figure 3 shown, including the following steps: S100. Invoke the photovoltaic power generation module to convert solar energy into electrical energy through the photovoltaic effect, and provide power support and energy storage support based on the converted electrical energy; S200. Invoke the sodium-ion energy storage module to store part of the converted electrical energy, and perform selective charge and discharge according to the power supply energy situation and the power supply time period.

[0049] Different from the prior art, by using the integrated intelligent power supply system and method for ships using light storage and start of the present application, a ship intelligent energy management system can be constructed based on the collaborative architecture of sodium-ion batteries and solar energy storage systems. Through the complementary mechanism of light storage, the comprehensive energy utilization rate and system reliability can be significantly improved, promoting the transformation of the ship industry towards green and low-carbon; the application of sodium-ion batteries effectively solves problems such as high self-discharge rate and poor environmental adaptability of traditional lead-acid batteries, and its solid electrolyte design significantly improves safety performance and extreme environment tolerance; based on the solar energy storage system, efficient conversion and storage of clean energy can be realized, effectively reducing ship operation costs while reducing environmental pollution; the technical system of the present invention optimizes multi-energy coupling and intelligent control strategies, strengthens the stability and environmental adaptability of the power supply system, and simultaneously improves the economy of energy supply and the flexibility of ship operation and maintenance, providing core support for the technological innovation of ship power systems.

[0050] It should be understood that in various embodiments herein, the sequence numbers of the above processes do not imply the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments herein.

[0051] It should also be understood that in the embodiments herein, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0052] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this article.

[0053] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific logical processes of the methods described above can refer to the corresponding working processes of the systems, devices, and units in the foregoing method embodiments, and will not be elaborated herein.

[0054] In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed couplings or direct couplings or communication connections to each other can be indirect couplings or communication connections through some interfaces, devices, or units, and can also be electrical, mechanical, or other forms of connection.

[0055] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments herein.

[0056] In addition, in each of the embodiments described in this document, each functional unit can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0057] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution in this document, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each of the embodiments in this document. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0058] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. An integrated intelligent power supply system for ships with photovoltaics, energy storage and starting, characterized in that Comprising: A photovoltaic power generation module, which is used to convert solar energy into electrical energy through the photovoltaic effect and provide power support and energy storage support based on the converted electrical energy; A sodium-ion energy storage module, which is used to store part of the converted electrical energy and perform selective charge and discharge according to the power supply energy situation and power supply time period; Inside the sodium-ion energy storage module, a sodium-ion starting battery configured to support high-rate charge and discharge and start under the conditions of -40°C to +70°C is provided.

2. The integrated photovoltaic energy storage starting intelligent power supply system for ships according to claim 1, wherein: The photovoltaic power generation module includes: a solar energy collection module and an energy conversion module; The solar energy collection module is used to convert sunlight radiation into electrical energy by using the photovoltaic effect under light conditions; The energy conversion module is used to convert the converted electrical energy into alternating current and then provide the power support and the energy storage support.

3. The integrated photovoltaic energy storage starting intelligent power supply system for ships according to claim 2, wherein: The solar energy collection module uses solar panels; The solar panels include: flexible photovoltaic panels or high-power photovoltaic panels; The solar panels are installed on the top of the ship's cab, in the open area of the ship or on the side of the ship.

4. The integrated photovoltaic energy storage starting intelligent power supply system for ships according to claim 3, wherein: The flexible photovoltaic panel includes: a copper indium gallium selenide thin-film solar panel using ETFE encapsulation technology; The high-power photovoltaic panel includes: a monocrystalline silicon or polycrystalline silicon photovoltaic panel.

5. The integrated photovoltaic energy storage starting intelligent power supply system for ships according to claim 1, wherein: The sodium-ion energy storage module includes: a sodium-ion battery cabinet and a battery management module; The sodium-ion battery cabinet is used to store the converted electrical energy by using the sodium-ion starting battery; The battery management module is used to monitor the state of the sodium-ion starting battery and control the charge and discharge of the sodium-ion starting battery according to the power supply energy situation and the power supply time period.

6. The integrated photovoltaic energy storage starting intelligent power supply system for ships according to claim 5, wherein: Specifically, the battery management module is further used to: when the photovoltaic energy obtained by the photovoltaic power generation module is insufficient, control the sodium-ion starting battery to supply power to the ship load.

7. The integrated photovoltaic energy storage starting intelligent power supply system for ships according to claim 5, wherein: Specifically, the battery management module is further used to: when the photovoltaic energy obtained by the photovoltaic power generation module is sufficient, use part of the converted electrical energy to charge the sodium-ion starting battery and use another part of the converted electrical energy to supply power to the ship load.

8. The integrated photovoltaic energy storage starting intelligent power supply system for ships according to claim 5, wherein: Specifically, the battery management module is further used to: charge the sodium-ion starting battery during the low-power consumption period of the ship load by using photovoltaic energy or other charging power sources.

9. The integrated photovoltaic energy storage starting intelligent power supply system for ships according to claim 5, wherein: The battery management module is specifically further configured to: supply power to the ship load during the peak power consumption period of the ship load by using photovoltaic energy or the sodium-ion start-up battery.

10. An integrated intelligent power supply method for ships using photovoltaics, energy storage and starting, characterized in that, The method includes the following steps: Invoke the photovoltaic power generation module to convert solar energy into electrical energy through the photovoltaic effect, and perform power supply support and energy storage support based on the converted electrical energy; Invoke the sodium-ion energy storage module to store part of the converted electrical energy, and perform selective charge and discharge according to the power supply energy situation and the power supply time period.

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