Power generation method and device for container ship lashing bridge

Abstract

The invention relates to a power generation method and device for a container ship lashing bridge, and relates to the technical field of ship lashing bridge power generation. The method comprises the steps of calculating a proportional relation between a photovoltaic panel and an illumination angle to determine an effective illumination area, estimating total power generation benefits, selecting a proper photovoltaic panel, installing a photovoltaic support and the panel, adjusting the angle of the panel to maximize illumination absorption, controlling a component switch according to photoresistor data, and calculating and extending a second section of movable support to prevent shielding. The device comprises a photovoltaic support, a panel, a signal receiver, a photoresistor, a signal tower and the like. The photovoltaic support can be fixed through magnetic attraction or a flange plate, and the device is further provided with a combiner box and an inverter. Through accurate calculation and intelligent control, the problems of space limitation and shadow shielding are solved, the solar power generation efficiency is improved, dependence on fossil energy is reduced, environmental pollution is reduced, and an effective solution is provided for green energy application of the container ship.

Description

Technical Field

[0001] The present invention relates to the technical field of container ship power generation, and in particular to a power generation method and device for a container ship lashing bridge. Background Art

[0002] With the growth of global trade, container ships, as one of the main means of maritime transportation, are increasingly concerned about their energy consumption and environmental impact. Traditional container ships mainly rely on fuel-fired power generation to meet the power needs on board, which not only leads to a large amount of fossil energy consumption, but also produces a large amount of greenhouse gases and other pollutants, causing serious impacts on the environment.

[0003] In order to reduce dependence on fossil energy and reduce environmental pollution, the application of renewable energy has become an important research direction. As a clean and renewable energy source, solar energy has great potential for application on ships. However, due to the space limitations and complex operating environment of ships, how to effectively deploy solar power generation systems on container ships has become a challenge.

[0004] Existing solar power generation systems usually require a large installation space, which is a problem for container ships with limited space. In addition, the efficiency of solar power generation systems is affected by shadowing factors. Therefore, it is particularly important to develop a solar power generation solution that can operate efficiently in a limited space and can adapt to the special environment of ships. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method and device for generating electricity for a container ship lashing bridge, which fully utilizes the free space of the container ship and takes into account the shadow shielding factor, and realizes efficient solar power generation through intelligent photovoltaic structure design and control system, while reducing dependence on fossil energy and reducing environmental pollution.

[0006] To achieve the above object, a method for ship self-generation is provided, comprising the following steps:

[0007] S1. Calculate the proportional relationship between the photovoltaic panel and the illumination angle in the photovoltaic module according to the preset formula, determine the effective illumination area of ​​the photovoltaic panel in one day, and estimate the total photovoltaic power generation benefit Ds in one day;

[0008] S2, select the photovoltaic panel with the corresponding power generation benefit D according to the total photovoltaic power generation benefit Ds per day and the hull type;

[0009] S3. Install the photovoltaic support on the container lashing bridge platform, and fix and install the photovoltaic panel to the photovoltaic support to form a photovoltaic module. The photovoltaic panel can change its sun-facing angle through the movable support and rotating device in the middle of the support, and a signal receiver and a photosensitive resistor are added to each photovoltaic module;

[0010] S4. According to the estimation result of the total daily power generation benefit Ds of the photovoltaic in step S1, adjust the angle of the photovoltaic panel to ensure that the photovoltaic panel faces the sun and maximize the light absorption area;

[0011] S5. Combine the real-time data provided by the photosensitive resistor to evaluate the current lighting conditions and decide whether to turn on or off the photovoltaic module;

[0012] S6. When occlusion is detected, calculate the length that the second movable support of the lower-layer photovoltaic panel needs to extend, and extend the corresponding second movable support according to the calculation result to prevent the upper-layer photovoltaic panel from occluding the lower-layer photovoltaic panel and ensure that the effective working area of all photovoltaic panels is maximized;

[0013] S7. Communicate with the signal receiver in the photovoltaic module through the signal tower to achieve centralized management and control of the photovoltaic module.

[0014] Further, step S1 specifically includes:

[0015] Define the lighting angle as a, the length of the photovoltaic panel as X, the occluded length of the photovoltaic panel as T, the photovoltaic spacing as M, and calculate the unoccluded lighting length L of the photovoltaic panel according to the similarity theorem:

[0016]

[0017] T = X - sina·M

[0018] The unoccluded lighting length L of the photovoltaic panel is sina·M. Analyze the relationship between the lighting angle a and the occluded length T of the photovoltaic panel to determine whether there is occlusion. When sina·M > X, it is defaulted that there is no occlusion. When sina·M < X, it is defaulted that there is occlusion;

[0019] Take the area of a single photovoltaic panel as S 光伏 , when a is at a certain moment and there is occlusion, the total photovoltaic power generation area is S1. When a is at a certain moment and there is no occlusion, the total photovoltaic power generation area is S2. The number of lashing bridge sections is O, the number of platform layers on each lashing bridge section is P, and the number of photovoltaic arrangements on each layer is H. Among them, the side closest to the sun will not be occluded. There is:

[0020]

[0021] S2 = S 光伏 ·H·P·O

[0022] Let sina*M≡X, default Take an integer value less than 90° to get the photovoltaic illumination area S at a certain time in a day 总 :

[0023]

[0024] The summation formula Can be simplified to

[0025] According to the sin function rule, the formula is simplified as follows:

[0026]

[0027] Take the power generation benefit per square meter per hour as D, take a conservative value for D, take the daily illumination time as t, the default illumination time is 12 hours a day, and the illumination angle changes by 15° every hour, and get the total photovoltaic power generation benefit D per day S The formula is:

[0028]

[0029] Where D is the power generation efficiency per square meter per hour, and t is the daily sunshine time.

[0030] Furthermore, the photovoltaic bracket includes a first section of a fixed bracket and a second section of a movable bracket, the first section of the fixed bracket is fixed to the container lashing bridge platform, the second section of the movable bracket is connected to the first section of the fixed bracket through a bracket rotation structure, and a photovoltaic panel is connected thereto. In step S5, the photovoltaic panel is turned on after the light intensity reaches a specified amount through the photoresistor, and the photovoltaic panel is controlled to face the sun through the second section of the movable bracket.

[0031] Furthermore, in step S5, when the resistance value of the photoresistor reaches a preset threshold, it is determined that the current lighting conditions meet the start-up conditions of the photovoltaic component, and the photovoltaic component is turned on; when the resistance value of the photoresistor is lower than the preset threshold, it is determined that the current lighting conditions do not meet the start-up conditions of the photovoltaic component, and the photovoltaic component is turned off.

[0032] Furthermore, in step S6, the formula for calculating the required extension length of the second movable bracket of the lower photovoltaic panel is:

[0033]

[0034] Among them, Y is the required extension length of the second movable bracket, X is the length of the photovoltaic panel, a is the illumination angle, and N is the spacing between the binding bridges.

[0035] Furthermore, a photovoltaic power generation device for a container ship lashing bridge is applicable to the method, and is characterized by comprising:

[0036] A photovoltaic bracket is installed on the container lashing bridge platform and is used to fix and install the photovoltaic panel. The photovoltaic bracket includes a first section of a fixed bracket and a second section of a movable bracket. The first section of the fixed bracket is fixed to the container lashing bridge platform, and the second section of the movable bracket is connected to the first section of the fixed bracket through a bracket rotation structure.

[0037] A photovoltaic panel is fixedly mounted on the photovoltaic bracket to form a photovoltaic assembly, and the photovoltaic panel can change its sun-facing angle through a movable bracket and a rotating device in the middle section of the bracket;

[0038] A signal receiver, installed in each photovoltaic module, is used to receive control signals from the signal tower;

[0039] Photoresistors, installed in each PV module, are used to provide real-time light data;

[0040] The signal tower is set up corresponding to each section of the binding bridge and is used to communicate with the signal receiver in the photovoltaic module to realize centralized management and control of the photovoltaic module.

[0041] Furthermore, the photovoltaic bracket is provided with a magnetic fixing device or a flange as an auxiliary fixing device for fixing the photovoltaic bracket to the container lashing bridge platform.

[0042] Furthermore, the photovoltaic power generation device for the container ship lashing bridge also includes:

[0043] The combiner box is installed on each layer of the lashing bridge to aggregate the electricity converted by all photovoltaic panels on this platform;

[0044] The inverter is installed at the bottom of each section of the lashing bridge and is used to convert the DC power collected by the combiner box into AC power for use on board.

[0045] Furthermore, a computer-readable storage medium having a computer program / instruction stored thereon is provided, wherein when the computer program / instruction is executed by a processor, the steps of a photovoltaic power generation method for a container ship lashing bridge are implemented.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] (1) The present invention fully utilizes the idle space of the upper lashing bridge of the ship by installing foldable and retractable photovoltaic modules on the lashing bridge platform without affecting cargo loading and unloading and navigation safety. The angle of the photovoltaic panels can be adjusted according to the lighting conditions to maximize the light absorption area while preventing shadows, thereby ensuring that the effective working area of ​​all photovoltaic panels is maximized.

[0048] (2) The present invention uses solar energy as an energy source, significantly reducing the demand for fossil fuels, reducing the emission of greenhouse gases and other pollutants, and helping to protect the environment and address climate change issues. In addition, photovoltaic power generation can also save operating costs, including reducing fuel costs and maintenance costs.

[0049] (3) The photovoltaic bracket of the present invention includes a variety of fixing measures, such as magnetic fixing devices, flanges, etc., to ensure the safety and stability of the structure, and effectively resist the impact of wind and waves even in severe weather conditions. The modular design allows a single component to be quickly replaced after damage, reducing the difficulty and time cost of maintenance.

[0050] (4) The method provided by the present invention is highly adaptable and can be flexibly adjusted according to different types of container ships, and is applicable to a variety of ship types and different navigation environments. By optimizing the selection and layout strategy of photovoltaic panels, the specific needs of various types of ships can be met, bringing significant economic benefits, while also promoting the development of green shipping and contributing to achieving global carbon emission reduction goals. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A schematic flow chart of a power generation method for a container ship lashing bridge is provided for an embodiment of the present invention;

[0052] Figure 2 A schematic block diagram of the connection of a power generation device for a container ship lashing bridge is provided for an embodiment of the present invention;

[0053] Figure 3 A schematic diagram of the connection of a power generation device for a container ship lashing bridge is provided for an embodiment of the present invention;

[0054] Figure 4 It is a diagram of the photovoltaic panel expansion and contraction process and photovoltaic closing of the present invention;

[0055] Figure 5 This is a schematic diagram of the photovoltaic overall structure installed on the container ship lashing bridge of the present invention;

[0056] Figure 6 This is an enlarged view of the magnetic buckle when the photovoltaic structure of the present invention is in a closed state;

[0057] Figure 7 It is a schematic diagram of light-chasing of the present invention;

[0058] Figure 8 It is a diagram illustrating the light-chasing process of the present invention;

[0059] Fig. 9 This is a photovoltaic arrangement diagram on a longitudinal lashing bridge of a ship according to the present invention;

[0060] Fig.10 is the photovoltaic distribution diagram of the present invention;

[0061] Fig.11 It is an auxiliary schematic diagram of the present invention for calculating the unobstructed light length based on triangle similarity;

[0062] Fig.12 It is an auxiliary schematic diagram of the present invention for calculating the extension length of the second section movable bracket according to triangle similarity;

[0063] Explanation of reference numbers: 1. Photovoltaic panel; 2. Magnetic clip; 3. Wire; 4. First section fixed bracket; 5. Bracket rotation structure; 6. Flange; 7. Magnetic fixing device; 8. Third section fixing device; 9. Second section movable bracket; 10. Combiner box; 11. Inverter; 12. Photovoltaic overall structure; 13. Deck; 14. Main hull; 15. Lashing bridge; 16. Photoresistor; 17. Signal box; 18. Signal receiver. DETAILED DESCRIPTION

[0064] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0065] In the description of the present invention, it should be understood that the terms "center", "axial", "lateral", "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0066] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0067] like Figure 1 As shown, an embodiment of the present invention provides a schematic flow chart of a power generation method for a container ship lashing bridge, comprising the following steps:

[0068] Step S1, calculating the proportional relationship between the photovoltaic panel 1 and the illumination angle in the photovoltaic module according to a preset formula, determining the effective illumination area of ​​the photovoltaic panel 1 in one day, and estimating the total photovoltaic power generation benefit Ds in one day;

[0069] Step S2, selecting a photovoltaic panel 1 corresponding to the power generation benefit D according to the total photovoltaic power generation benefit Ds per day and the hull type;

[0070] Step S3, installing the photovoltaic bracket on the container lashing bridge platform, fixing the photovoltaic panel 1 and the photovoltaic bracket to form a photovoltaic assembly, wherein the photovoltaic panel 1 can change its sun-facing angle through the movable bracket and the rotating device in the middle section of the bracket, and adding a signal receiver 18 and a photoresistor 16 in each photovoltaic assembly;

[0071] Step S4, according to the estimation result of the total benefit Ds of photovoltaic power generation in one day in step S1, adjusting the angle of the photovoltaic panel 1 to ensure that the photovoltaic panel 1 faces the sun to maximize the light absorption area;

[0072] Step S5, combining the real-time data provided by the photoresistor 16, evaluating the current lighting conditions, and deciding whether to turn on or off the photovoltaic module;

[0073] Step S6, when shading is detected, the length of the second movable bracket 9 of the lower photovoltaic panel 1 to be extended is calculated, and the corresponding second movable bracket 9 is extended according to the calculation result to prevent the upper photovoltaic panel 1 from shading the lower photovoltaic panel 1, thereby maximizing the effective working area of ​​all photovoltaic panels 1;

[0074] Step S7: Communicate with the signal receiver 18 in the photovoltaic module through the signal tower to achieve centralized management and control of the photovoltaic module.

[0075] like Fig. 9 As shown, the present invention provides a photovoltaic arrangement diagram on a longitudinal lashing bridge of a ship, the purpose of which is to better illustrate the problem of mutual obstruction of lashing bridges in the direction of the ship's length.

[0076] like Fig.10 As shown, the present invention provides a photovoltaic layout distribution diagram on the longitudinal lashing bridge of the ship. Combined with the actual data of a 14,500-TEU container ship, the longitudinal spacing data of the lashing bridge is taken as the length of two standard containers, about 12 meters, and the height is 2.4 meters of a container height. According to the above calculation results, the maximum number of layers is 4 (for the accuracy of the calculation results, the above structure is increased by one and five layers), and all the data of the lashing bridge are in line with reality.

[0077] The sunrise and sunset times at sea are not fixed, and the exposure time is also not fixed, about 11-14 hours. The average exposure time is taken as 12.5 hours. Taking 3000 kWh of electricity as an example, calculate whether there is an obstruction problem.

[0078]

[0079] According to the above calculations (single layer and five layers are only used as fitting functions), for the problem of photovoltaic shading on each longitudinal section of the tying bridge, the following functions are fitted:

[0080] Relationship between shading angle and number of photovoltaic layers: A = -0.61X 2 + 10.11X + 1.81

[0081] Relationship between illumination time and number of photovoltaic layers: T 光照 = -0.545X 2 - 0.03X + 11.075.

[0082] Specifically, considering the above calculation results and the summary formula, the photovoltaic structure on the tying bridge should adopt a layout with a higher power photovoltaic intermediate layer, make full use of the internal illumination space of a single photovoltaic area, improve the photovoltaic power generation efficiency, and at the same time be able to arrange the photovoltaic positions more reasonably and increase the control ability of the photovoltaic structure within the area.

[0083] As Fig.11 shown, the present invention provides an auxiliary schematic diagram for calculating the unobstructed illumination length according to the similarity of triangles. The following formula calculates using the similarity theorem. The small triangle on the left is similar to the entire large triangle, and the triangle angle is the same as the sunlight illumination angle. The premise of the following formula calculation is the photovoltaic positive orientation. Therefore, when the incident angle a changes, the photovoltaic panel 1 itself will change with the change of the incident angle a due to the positive orientation characteristics and ensure perpendicular to the illumination direction:

[0084] Define the illumination angle as a, the length of the photovoltaic panel 1 as X, the shaded length of the photovoltaic panel 1 as T, the photovoltaic spacing as M, and calculate the unobstructed illumination length L of the photovoltaic panel 1 according to the similarity theorem:

[0085]

[0086] T = X - sina·M

[0087] The unobstructed illumination length L of the photovoltaic panel 1 is sina·M. Analyze the relationship between the illumination angle a and the shaded length T of the photovoltaic panel 1 to determine whether there is shading. When sina·M > X, it is defaulted that there is no shading. When sina·M < X, it is defaulted that there is shading;

[0088] Take the area of a single photovoltaic panel as S 光伏 , when a is at a certain moment and there is shading, the total photovoltaic power generation area is S1. When a is at a certain moment and there is no shading, the total photovoltaic power generation area is S2. The number of tying bridge sections is O, the number of platform layers on each tying bridge section is P, and the number of photovoltaic arrangements on each layer is H. Among them, the side closest to the sun will not be shaded. There is:

[0089]

[0090] S2=S 光伏 ·H·P·O

[0091] Let sina*M≡X, default Take an integer value less than 90° to get the photovoltaic illumination area S at a certain time in a day 总 :

[0092]

[0093] The summation formula Can be simplified to

[0094] According to the sin function rule, the formula is simplified as follows:

[0095]

[0096] Take the power generation benefit per square meter per hour as D, and take a conservative value for D in the calculation. The daily illumination time is t, the default illumination time is 12 hours a day, and the illumination angle changes by 15° every hour, and the total photovoltaic power generation benefit per day is D S The formula is:

[0097]

[0098] Where D is the power generation efficiency per square meter per hour, and t is the daily sunshine time.

[0099] A comparison is made based on a 14,500-TEU container ship, a 550W photovoltaic system, and a C2000D5-PB diesel generator. A 14,500-TEU container ship requires about 3,000-5,000 kWh of electricity per day. The comparison results based on 3,000 kWh of electricity are as follows. The photovoltaic system is arranged adjacent to each other, and the conversion efficiency of the diesel generator is 0.4. The calculation results are estimated values:

[0100]

[0101] like Fig.12 As shown, this is an auxiliary schematic diagram of calculating the extension length of the second section movable bracket based on triangle similarity of the present invention.

[0102] Explanation K1. The following formula uses the similarity theorem to calculate. The small triangle in the lower left corner is similar to the entire large triangle above, and the angle of the triangle is consistent with the angle of sunlight.

[0103]

[0104] T=X-cosa*N

[0105] Therefore, the length of unobstructed light on the photovoltaic is cosa*N, and the second section movable bracket 9 is set to prevent the problem of sunlight blocking on the upper and lower layers. The extension length of the second section movable bracket 9 is set to Y, and the longest extension of the second section movable bracket 9 is the length of a photovoltaic panel 1, so that all photovoltaics can achieve maximum power generation capacity when they are not blocked.

[0106] The formula for calculating the required extension length of the second movable bracket 9 of the lower photovoltaic panel 1 is:

[0107]

[0108] Among them, Y is the required extension length of the second section of the movable bracket 9, X is the length of the photovoltaic panel 1, a is the illumination angle, and N is the spacing of the binding bridges.

[0109] Example 2

[0110] like Figure 2 and Figure 3 As shown, the present invention also provides a photovoltaic power generation device for a container ship lashing bridge, which is applicable to the method in Example 1, comprising:

[0111] The photovoltaic bracket is installed on the container lashing bridge platform and is used to fix and install the photovoltaic panel 1; the photovoltaic bracket includes a first section fixed bracket 4 and a second section movable bracket 9, the first section fixed bracket 4 is fixed to the container lashing bridge 15, and the second section movable bracket 9 is connected to the first section fixed bracket 4 through a bracket rotating structure 5;

[0112] The photovoltaic panel 1 is fixedly mounted on the photovoltaic bracket to form a photovoltaic assembly. The photovoltaic panel 1 can change its sun-facing angle through a movable bracket and a rotating device in the middle section of the bracket;

[0113] A signal receiver 18, installed in each photovoltaic module, for receiving a control signal from a signal tower;

[0114] A photoresistor 16 is installed in each photovoltaic module to provide real-time light data;

[0115] The signal tower is provided corresponding to each section of the binding bridge and is used to communicate with the signal receiver 18 in the photovoltaic module to realize the centralized management and control of the photovoltaic module.

[0116] The combiner box 10 is installed on each layer of the binding bridge and is used to aggregate the electric energy converted by all photovoltaic panels 1 on this platform.

[0117] The inverter 11 is installed at the bottom of each section of the lashing bridge and is used to convert the direct current collected by the combiner box 10 into alternating current for use on board.

[0118] Furthermore, the photovoltaic bracket is provided with a magnetic fixing device 7 or a flange 6 as an auxiliary fixing device for fixing the photovoltaic bracket to the container lashing bridge platform.

[0119] Furthermore, the photovoltaic bracket includes a first section fixed bracket 4 and a second section movable bracket 9. The first section fixed bracket 4 is fixed to the container lashing bridge platform, and the second section movable bracket 9 is connected to the first section fixed bracket 4 through a bracket rotating structure 5, and a photovoltaic panel 1 is connected thereto. In step S5, the photovoltaic panel 1 is turned on after the light intensity reaches a specified amount through the photoresistor 16, and the photovoltaic panel 1 is controlled to face the sun through the second section movable bracket 9.

[0120] Specifically, when the resistance value of the photoresistor 16 reaches a preset threshold, it is determined that the current lighting conditions meet the start-up conditions of the photovoltaic component, and the photovoltaic component is turned on; when the resistance value of the photoresistor 16 is lower than the preset threshold, it is determined that the current lighting conditions do not meet the start-up conditions of the photovoltaic component, and the photovoltaic component is turned off.

[0121] Furthermore, a signal receiver 18 is provided on the second section movable bracket 9, and the photovoltaic overall structure can be controlled by a signal box 17 on each section of the binding bridge 15, and the electric energy required by the signal box 17 comes from the photovoltaic structure.

[0122] Each layer of the binding bridge is provided with a junction box 10, which aggregates the converted electrical energy of all photovoltaic panels 1 on this platform and transmits all the electrical energy to the inverter 11 through the wires 3. There are three ways to fix the overall structure of the invention, the first is to connect with the binding bridge platform through the flange 6, the second is to connect with the binding bridge platform through the magnetic fixing device 7, and the third is that the third section fixing device 8 is controlled by its own weight. Specifically, C5 and the magnetic buckle 2 are located on both sides of the photovoltaic panel 1, and their function is to protect the stability of the photovoltaic panel 1 after it is folded and closed. Preferably, the computer program performs calculations based on the photovoltaic layout position parameters, light intensity, etc. The total power generation under ideal conditions in one day can be estimated through the above data, and the power generation under different parameters can be calculated according to different selected parameters (parameters include: power generation efficiency of photovoltaic panel 1, layout quantity, number of layout layers, etc.).

[0123] like Figure 4 As shown, the present invention provides a photovoltaic panel 1 extension and contraction process and photovoltaic closing diagram. The photovoltaic panel 1 is composed of four panels. When the photovoltaic is closed, the second section movable bracket 9 moves inward, driving the photovoltaic panel 1 and the first section fixing device 4 to move inward, and at the same time, the photovoltaic panels 1 on both sides are folded inward. Specifically, the middle section is given a certain speed, so it is easier to close the two sides inward; secondly, when the photovoltaic panel 1 is folded, the second section movable bracket 9 rotates downward until it is tightly attached to the third section fixed bracket 8; finally, the bracket rotating device 5 bends inward, so that the photovoltaic panel 1 is completely placed on the second section movable bracket 9. Figure 5 As shown, the present invention provides a schematic diagram of the overall photovoltaic structure installed on the lashing bridge of a container ship. In the figure, the number of photovoltaic structures on the lashing bridge 15 platform is determined according to the width of the lashing bridge, and the number of layers is selected and arranged according to the specific ship requirements, navigation conditions, electricity demand, etc. The photovoltaic structure arrangement position, status, etc. shown in the figure are only for reference.

[0124] Furthermore, the combiner box 10 is only arranged on the platform of the binding bridge 15 where the photovoltaic structure exists (if the photovoltaic structure is not arranged on this layer, the combiner box 10 is not installed), and each section of the binding bridge 15 has an inverter 11 at the bottom. The combiner box 10 aggregates the direct current produced by the photovoltaic panel 1, and converts the aggregated direct current of the combiner box 10 into alternating current for human use through the inverter 11.

[0125] like Figure 8 As shown, the present invention provides a description of the light-chasing process of the photovoltaic structure in a working state. The sun 17 is far away from the photovoltaic panel 1, and the above figure is only used as a schematic diagram to show the principle.

[0126] Specifically, Figure (a) shows the state of light irradiating the photoresistor 16 when the photovoltaic structure is not perpendicular to the light (not facing the sun), and the resistance value of the left photoresistor 16 is greatly reduced under the light. In order to ensure the maximum benefit of the photovoltaic structure in power generation, the second section of the movable bracket 9 will rotate to the left (as shown in the figure) until it is as shown in Figure (b). At this time, because the structure is perpendicular to the light direction, the photoresistors 16 on both sides are not directly exposed to light, the resistance value does not change significantly, and the resistance value is equal. Figure (b) shows that the photovoltaic panel 1 is perpendicular to the light (facing the sun).

[0127] Example 3

[0128] The present invention also provides a computer-readable storage medium having a computer program / instruction stored thereon, characterized in that when the computer program / instruction is executed by a processor, the steps of the photovoltaic power generation method for a container ship lashing bridge in Example 1 are implemented.

[0129] like Figure 3 As shown, the present invention provides a connection diagram of a power generation device for a container ship lashing bridge. The computer program turns on the photovoltaic panel 1 after receiving the light intensity feedback from the photoresistor 16 and reaches a specified value, and controls the photovoltaic panel 1 to face the sun through the second movable bracket 9 at the bottom. The photoresistor 16 is only installed on the photovoltaics on both sides of the lashing bridge, and the other photovoltaics are not installed. The sun-facing angles of the other photovoltaics are consistent with the directions of the photovoltaics on both sides that receive stronger light; at the same time, the computer program can judge the relative direction of light to the overall photovoltaic structure according to the values ​​of the photoresistors 16 on both sides, keep all photovoltaics facing the sun, and select the photovoltaic direction at the end with a smaller resistance value of the photoresistor 16.

[0130] Furthermore, for the photovoltaic shading problem on each longitudinal lashing bridge, the following function is fitted:

[0131] Relationship between shielding angle and number of photovoltaic layers: A = -0.61X 2 +10.11X+1.81

[0132] Relationship between illumination time and number of photovoltaic layers: T 光照 =-0.545X 2 -0.03X+11.075.

[0133] Specifically, considering the above calculation results and summary formulas, the photovoltaic structure on the tied bridge should adopt a higher-power photovoltaic interlayer layout to make full use of the internal illumination space of a single photovoltaic area, improve the efficiency of photovoltaic power generation, and arrange the photovoltaic position more reasonably, thereby increasing the computer program's ability to control the photovoltaic structure within the area.

[0134] The preferred embodiments of the present invention are described in detail above; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A photovoltaic power generation method for a container ship lashing bridge, characterized in that: The steps include: S1. Calculate the proportional relationship between the photovoltaic panel and the illumination angle in the photovoltaic module according to the preset formula, determine the effective illumination area of ​​the photovoltaic panel in one day, and estimate the total photovoltaic power generation benefit Ds in one day; S2, selecting a photovoltaic panel corresponding to the power generation benefit D according to the total photovoltaic power generation benefit Ds per day and the hull type; S3, installing the photovoltaic bracket on the container lashing bridge platform, fixing the photovoltaic panel and the photovoltaic bracket to form a photovoltaic assembly, wherein the photovoltaic panel can change its sun-facing angle through the movable bracket and the rotating device in the middle section of the bracket, and adding a signal receiver and a photoresistor in each photovoltaic assembly; S4, according to the estimation result of the total benefit Ds of photovoltaic power generation in one day in step S1, adjusting the angle of the photovoltaic panel to ensure that the photovoltaic panel faces the sun and maximizes the light absorption area; S5, combining the real-time data provided by the photoresistor, evaluating the current lighting conditions and deciding whether to turn on or off the photovoltaic module; S6. When an obstruction is detected, the length of the second movable bracket of the lower photovoltaic panel to be extended is calculated, and the corresponding second movable bracket is extended according to the calculation result to prevent the upper photovoltaic panel from obstructing the lower photovoltaic panel, thereby maximizing the effective working area of ​​all photovoltaic panels; S7. Communicate with the signal receiver in the photovoltaic module through the signal tower to realize the centralized management and control of the photovoltaic module.

2. The photovoltaic power generation method for container ship lashing bridge according to claim 1, characterized in that: In step S1, the total benefit of photovoltaic power generation per day is D S The formula is: In the formula, D is the power generation efficiency per square meter per hour, t is the daily sunshine time; S 总 It is the photovoltaic illumination area at a certain time of the day.

3. The photovoltaic power generation method for container ship lashing bridge according to claim 2, characterized in that: The photovoltaic illumination area S at a certain time of the day 总 Obtained by the following formula: In the formula, S 光伏 is the area of ​​a single photovoltaic panel, a is the illumination angle, X is the length of the photovoltaic panel, T is the shading length of the photovoltaic panel, and M is the photovoltaic spacing; O is the number of binding bridge sections, P is the number of platform layers on each binding bridge section, and H is the number of photovoltaic arrangements on each layer.

4. The photovoltaic power generation method for container ship lashing bridge according to claim 3, characterized in that: The photovoltaic bracket includes a first section of a fixed bracket and a second section of a movable bracket. The first section of the fixed bracket is fixed to the container lashing bridge platform. The second section of the movable bracket is connected to the first section of the fixed bracket through a bracket rotation structure, and a photovoltaic panel is connected to the second section of the movable bracket. In step S5, the photovoltaic panel is turned on after the light intensity reaches a specified amount through the photoresistor, and the photovoltaic panel is controlled to face the sun through the second section of the movable bracket.

5. The photovoltaic power generation method for container ship lashing bridge according to claim 4, characterized in that: In step S5, when the resistance value of the photoresistor reaches a preset threshold, it is determined that the current lighting conditions meet the start-up conditions of the photovoltaic component, and the photovoltaic component is turned on; when the resistance value of the photoresistor is lower than the preset threshold, it is determined that the current lighting conditions do not meet the start-up conditions of the photovoltaic component, and the photovoltaic component is turned off.

6. The photovoltaic power generation method for container ship lashing bridge according to claim 5, characterized in that: In step S6, the formula for calculating the required extension length of the second movable bracket of the lower photovoltaic panel is: Among them, Y is the required extension length of the second movable bracket, X is the length of the photovoltaic panel, a is the illumination angle, and N is the spacing of the binding bridges.

7. A photovoltaic power generation device for a container ship lashing bridge, using the method as claimed in claim 5, characterized in that: include: A photovoltaic bracket is installed on the container lashing bridge platform and is used to fix and install the photovoltaic panel. The photovoltaic bracket includes a first section of a fixed bracket and a second section of a movable bracket. The first section of the fixed bracket is fixed to the container lashing bridge platform, and the second section of the movable bracket is connected to the first section of the fixed bracket through a bracket rotation structure. A photovoltaic panel is fixedly mounted on the photovoltaic bracket to form a photovoltaic assembly, and the photovoltaic panel can change its sun-facing angle through a movable bracket and a rotating device in the middle section of the bracket; A signal receiver, installed in each photovoltaic module, is used to receive control signals from the signal tower; Photoresistors, installed in each PV module, are used to provide real-time light data; The signal tower is set up corresponding to each section of the binding bridge and is used to communicate with the signal receiver in the photovoltaic module to realize centralized management and control of the photovoltaic module.

8. The photovoltaic power generation device for container ship lashing bridge according to claim 7, characterized in that: The photovoltaic bracket is provided with a magnetic fixing device or a flange as an auxiliary fixing device, which is used to fix the photovoltaic bracket to the container lashing bridge platform.

9. The photovoltaic power generation device for container ship lashing bridge according to claim 7, characterized in that: Also includes: The combiner box is installed on each layer of the lashing bridge to aggregate the electricity converted by all photovoltaic panels on this platform; The inverter is installed at the bottom of each section of the lashing bridge and is used to convert the DC power collected by the combiner box into AC power for use on board.

10. A computer-readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instructions are executed by a processor, the steps of the photovoltaic power generation method for a container ship lashing bridge in claim 6 are implemented.

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