Photovoltaic system and photovoltaic equipment for aquaculture

By installing a backlight on the back of the photovoltaic panel and controlling its light intensity and duration, the negative impact of photovoltaic panel shading on aquatic plants was solved, thus achieving healthy growth of aquatic plants and meeting the growth needs of crabs.

CN224054219UActive Publication Date: 2026-03-27CHANGZHOU BAIJIA NIANDAI FILM TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-06
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

While the shading effect of photovoltaic panels is beneficial to crab growth, it has a negative impact on aquatic plants, leading to poor plant growth, lack of shade and food, and thus affecting crab growth.

Method used

A backlight is installed on the back of the photovoltaic panel. The power supply of the backlight is controlled by a photosensitive sensor and a control module to provide supplemental lighting to aquatic plants, ensuring that the light intensity is 3000-6000 lux and the duration is 10-12 hours, which meets the growth needs of crabs.

Benefits of technology

It effectively compensates for the sunlight blocked by the photovoltaic panels, prevents the aquatic plants from growing poorly, provides a suitable lighting environment, and promotes the growth of crabs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of photovoltaic new energy cultivation, and particularly relates to a photovoltaic system for aquaculture, which comprises a photovoltaic panel, a photovoltaic module, a photovoltaic module and a photovoltaic module. The backlight source is arranged on the back face of the photovoltaic panel, and the light-emitting face of the backlight source faces the water surface; the control module is electrically connected with the photosensitive sensor and the clock module so as to control a power supply loop of the backlight source; wherein the photosensitive sensor is configured to detect the ambient light intensity of the back surface of the photovoltaic panel, and the control module is configured to control the power supply loop to supply power to the backlight source and start the backlight source when the ambient light intensity is lower than a set value, and control the backlight source to be turned off at night according to the clock module. According to the photovoltaic system for aquaculture, the backlight source is arranged on the back face of the photovoltaic panel to make up sunlight, blocked by the photovoltaic panel, of aquatic plants in a crab pond, the aquatic plants supplement illumination through the backlight source, and poor growth of the aquatic plants due to insufficient illumination is avoided.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of photovoltaic new energy aquaculture, especially relates to a photovoltaic system and photovoltaic equipment for aquaculture. BACKGROUND

[0002] The aquaculture mode under the photovoltaic panel can realize the win-win benefit of "generating electricity on water and aquaculture under water". Although the shading effect of the photovoltaic panel is beneficial to the growth of crabs, it will have a negative impact on the water grass, and the water grass in the crab pond is an important habitat and food source for crabs. If the water grass grows poorly, the crabs lack shelter and are vulnerable to attacks by natural enemies, and at the same time, they will also grow slowly due to lack of food.

[0003] Therefore, how to avoid poor growth of water grass under the photovoltaic panel is a technical problem that needs to be solved by those skilled in the art.

[0004] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background technology of the concept of the present application, and therefore, the above description is not considered to constitute information of the prior art. INVENTION CONTENTS

[0005] The present disclosure provides at least a photovoltaic system and photovoltaic equipment for aquaculture.

[0006] In a first aspect, the present disclosure provides a photovoltaic system for aquaculture, comprising:

[0007] a photovoltaic panel, the back surface of which is provided with a support column;

[0008] a backlight source, which is arranged on the back surface of the photovoltaic panel and has a light-emitting surface facing the water surface;

[0009] a control module electrically connected with the photosensitive sensor and the clock module, to control the power supply circuit of the backlight source;

[0010] The photosensitive sensor is configured to detect the ambient light intensity on the back surface of the photovoltaic panel, and the control module is configured to control the power supply circuit to supply power to the backlight source when the ambient light intensity is lower than a set value, to start the backlight source, and to turn off the backlight source at night according to the clock module.

[0011] In an optional embodiment, the back surface of the photovoltaic panel is uniformly arranged with a plurality of mounting strips, and the mounting strips are provided with a plurality of mounting positions, and the backlight source is assembled on the back surface of the photovoltaic panel through the mounting positions.

[0012] In an optional embodiment, a support frame is arranged above the support column, the support frame is provided with a plurality of connecting rods, and the backlight source is installed on the support frame through the connecting rods and the light-emitting surface of the backlight source is vertically arranged with the water surface.

[0013] In an alternative embodiment, the backlight is activated when the ambient light intensity is less than 3000 lux.

[0014] In an alternative embodiment, the backlight is electrically connected to the control module through a constant current driving power supply for light intensity adjustment, and the constant current driving power supply is connected to the power supply circuit of the backlight.

[0015] The control module is further configured to receive the ambient light intensity of the photosensitive sensor and generate a PWM signal for light intensity adjustment, and input to the control end of the constant current driving power supply to control the brightness of the backlight.

[0016] In an alternative embodiment, the backlight is electrically connected to the control module through a constant current driving power supply for light intensity adjustment, and the constant current driving power supply is connected to the power supply circuit of the backlight.

[0017] The control module is further configured to receive the ambient light intensity of the photosensitive sensor and generate a PWM signal for light intensity adjustment, and input to the control end of the constant current driving power supply to control the brightness of the backlight.

[0018] In a second aspect, the embodiments of the present disclosure also provide a photovoltaic system for aquaculture, comprising:

[0019] A photovoltaic panel is provided with a support column on the back side;

[0020] A backlight is provided on the back side of the photovoltaic panel;

[0021] The photovoltaic panel and the backlight are electrically connected to the battery through a control module, and the control module is further electrically connected to a clock module, and the control module is configured to deliver the electrical energy of the battery to the backlight to provide light to the aquatic plants during the night period.

[0022] In an alternative embodiment, the back side of the photovoltaic panel is uniformly arranged with a plurality of mounting strips, and the mounting strips are provided with a plurality of mounting positions, and the backlight is assembled on the back side of the photovoltaic panel through the mounting positions.

[0023] In an alternative embodiment, a support frame is provided above the support column, and a plurality of connecting rods are provided on the support frame, and the backlight is mounted on the support frame through the connecting rods, and the light emitting surface of the backlight is vertically arranged with the water surface.

[0024] In an alternative embodiment, the backlight is electrically connected to the control module through a constant current driving power supply for light intensity adjustment, and the constant current driving power supply is connected to the power supply circuit of the backlight.

[0025] The control module is also configured to receive the ambient light intensity of the light-sensitive sensor and generate a PWM signal for adjusting the light intensity, and input the PWM signal to a control end of a constant current driving power supply to control the light intensity of the backlight source to be 3000-6000 lux, and control the light duration to be 1-2 hours according to the clock module.

[0026] In a third aspect, the embodiments of the present disclosure further provide a photovoltaic device for aquaculture, comprising:

[0027] A photovoltaic panel, a back surface of which is provided with a support column;

[0028] A backlight source, which is arranged on the back surface of the photovoltaic panel and has a light emitting surface facing the water surface;

[0029] The light emitting surface of the backlight source is arranged vertically to the water surface; and

[0030] The light intensity of the backlight source is 3000-6000 lux.

[0031] The photovoltaic system for aquaculture of the present application compensates for the sunlight blocked by the photovoltaic panel in the crab pond by arranging the backlight source on the back surface of the photovoltaic panel, so that the water plants can be supplemented with light by the backlight source, and the growth of the water plants is not affected by insufficient light.

[0032] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood from the practice of the present application. The purposes and other advantages of the present application are achieved by the structures specifically pointed out in the specification, drawings and claims.

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0035] Figure 1 A perspective view of embodiment 1 of the photovoltaic system for aquaculture provided by the embodiments of the present disclosure;

[0036] Figure 2 A perspective view of embodiment 2 of the photovoltaic system for aquaculture provided by the embodiments of the present disclosure;

[0037] Figure 3 A principle block diagram of a control module of a photovoltaic system for aquaculture is provided for embodiments of the present disclosure.

[0038] In the drawings:

[0039] 100, photovoltaic panel; 200, support column; 300, backlight; 400, battery; 500, mounting strip; 510, mounting position; 600, support frame; 610, connecting rod. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be described below in connection with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] In this document, when a first component is referred to as being "on" a second component, it can be directly on the second component or a third component can be interposed between the first component and the second component. Also, in the drawings, the thickness of components can be exaggerated or reduced for effective description of the technical content.

[0042] In this document, when an element or layer is referred to as being "on", "engaged to", "connected to", "attached to", or "coupled to" another element or layer, it can be directly on, engaged, connected, attached, or coupled to the other element or layer, or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on", "directly engaged to", "directly connected to", "directly attached to", or "directly coupled to" another element or layer, there are no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., "between" versus "directly between", "adjacent" versus "directly adjacent", etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] In this document, example embodiments of the present disclosure will be described in greater detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of", when preceded by terms such as "comprising" or "including", modify the phrase following the comma (i.e., "a, b, and c, at least one of, d and e") rather than the entire list of elements that the phrase precedes. For example, the expression "at least one of a, b, and c" should be understood as including only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0044] The terminology used herein is for the purpose of describing particular example configurations only and is not intended to be limiting. As used herein, the singular articles "a," "an," and "the" can be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order

[0045] As used herein, the phrases "in an embodiment," "according to an embodiment," "in some embodiments," and the like generally mean the particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of the present disclosure. Thus, appearances of such phrases in various places throughout this specification are not necessarily intended to refer to the same embodiment. As used herein, the term "for example" or "e.g." means "for the purpose of example, illustration, and / or elucidation." Any implementation, aspect or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects or designs. Rather, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0046] It is found through research that the existing technology has the following disadvantages: the shading effect of the photovoltaic panel is beneficial to the growth of crabs, but also has a negative impact on the water grass in the crab pond. The water grass in the crab pond is an important habitat and food source for crabs. If the water grass does not grow well, the crabs lack shelter and are vulnerable to attacks from natural enemies. At the same time, the crabs will also grow slowly due to lack of food.

[0047] Based on the above research, the photovoltaic system for aquaculture provided by the embodiments of the present disclosure solves the above problems by making up for the sunlight blocked by the photovoltaic panel through supplemental lighting.

[0048] The above-mentioned defects are the results of the inventors' practice and careful research, and therefore, the discovery process of the above-mentioned problems and the solutions proposed by the present disclosure to solve the above-mentioned problems should be the contributions of the inventors to the present disclosure.

[0049] It should be noted that similar reference numerals and letters refer to similar items throughout the accompanying drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0050] Some embodiments of the present application will be described in detail below with reference to the drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0051] Referring to Figure 1 The present application provides a photovoltaic system for aquaculture, comprising: a photovoltaic panel 100, the back of which is provided with a support column 200 to fix the photovoltaic panel 100 above the water surface. The back of the photovoltaic panel 100 is provided with a backlight 300, the light-emitting surface of which faces the water surface to provide light for the water plants in the water.

[0052] In some embodiments, the backlight 300 is electrically connected with a control module, and the control module is adapted to control the power supply circuit of the backlight 300. The control module is also electrically connected with a photosensitive sensor, which can be optionally installed on the back of the photovoltaic panel 100 to detect the ambient light intensity.

[0053] In the present embodiment, the photosensitive sensor is configured to detect the ambient light intensity on the back of the photovoltaic panel 100. The control module is configured to control the power supply circuit to supply power to the backlight 300 when the ambient light intensity is lower than a set value, and to start the backlight 300 to provide light for the water plants in the water to compensate for the sunlight blocked by the photovoltaic panel 100 in the crab pond, so that the water plants can supplement light through the backlight 300 and avoid poor growth due to insufficient light.

[0054] Specifically, the crabs bred in the crab pond can be Eriocheir sinensis, and the water plants beneficial to the growth of Eriocheir sinensis include, but are not limited to, Hydrilla verticillata, Vallisneria and Nitella opalina. When Hydrilla verticillata is selected, for example, a light intensity of 3000 lux or higher is more suitable for the growth of such water plants. Therefore, when the photosensitive sensor detects that the ambient light intensity is lower than the set value of 2500 lux, the control module is adapted to control the power supply circuit to supply power to the backlight 300 to start the backlight 300. In addition, Eriocheir sinensis is a diurnal animal, and in order not to affect its growth, the control module is also electrically connected with a clock module and is configured to control the light duration to be between 10-12 hours to conform to the natural light scenario, and to turn off the backlight 300 during the period from 20:00 in the evening to 6:00 the next morning to adapt to the nocturnal activity habit of Eriocheir sinensis.

[0055] Continuing to refer to Figure 1 In some embodiments, the back of the photovoltaic panel 100 is uniformly arranged with a plurality of mounting strips 500, and the mounting strips 500 are provided with a plurality of mounting positions 510. Power lines are pre-set in the mounting strips 500 and the mounting positions 510, and the backlight 300 is connected with the power supply through the mounting positions 510. In addition, the light of the backlight 300 can be relatively uniformly irradiated into the water through the uniformly arranged mounting strips 500, so that the water plants in the water are uniformly distributed and will not gather together.

[0056] Referring to Figure 2 In some embodiments, the upper part of the support column 200 is provided with a support frame 600, and a plurality of connecting rods 610 are arranged on the support frame 600. The backlight source 300 is installed on the support frame 600 through the connecting rods 610, and the light-emitting surface of the backlight source 300 is arranged vertically to the water surface.

[0057] Referring to Figure 3 In some embodiments, the backlight source 300 is electrically connected to the control module through a constant-current driving power supply which is connected to the power supply circuit of the backlight source 300. The control module is further configured to receive the ambient light intensity of the photosensitive sensor and generate a PWM signal for adjusting the light intensity, and input the PWM signal to the control end of the constant-current driving power supply to control the light intensity of the backlight source 300. Specifically, when the ambient light intensity is lower than 2500 lux, the duty cycle of the PWM is controlled to increase the on-time of the constant-current driving power supply, thereby increasing the power of the backlight source 300 and increasing the light intensity thereof. When the ambient light intensity is higher than 6000 lux, the duty cycle of the PWM is controlled to decrease the on-time of the constant-current driving power supply, thereby decreasing the power of the backlight source 300 and decreasing the light intensity thereof. Through the above setting, the light intensity of the backlight source 300 can be maintained between 3000 lux and 6000 lux. In this range of light intensity, the light demand of the Hydrilla verticillata can be met, and the growth of the crab will not be affected.

[0058] In some embodiments, since the light source is directed towards the water surface, the ambient light intensity detected by the photosensitive sensor on the back of the photovoltaic panel (100) has little effect, and more accurate parameters of the ambient light intensity can be collected.

[0059] Referring to Figure 1 The photovoltaic system for aquaculture provided by the embodiments of the present disclosure comprises: a photovoltaic panel 100, a support column 200 arranged on the back of the photovoltaic panel 100, and a backlight source 300 arranged on the back of the photovoltaic panel 100. The photovoltaic panel 100 and the backlight source 300 are both electrically connected to a control module and a storage battery 400. The control module is further electrically connected to a clock module and is configured to deliver the electric energy of the storage battery 400 to the backlight source 300 to supplement the light for the aquatic plants at night.

[0060] Further, the control module is further configured to receive the ambient light intensity of the photosensitive sensor and generate a PWM signal for adjusting the light intensity, and input the PWM signal to the control end of the constant-current driving power supply to maintain the light intensity of the backlight source 300 between 3000 lux and 6000 lux, and to supplement the light at 18:00-20:00 at night according to the clock module to adapt to the nocturnal activity habit of the hairy crab.

[0061] Referring to Figure 1The photovoltaic system for aquaculture also provides a photovoltaic device for aquaculture, which comprises a photovoltaic panel 100, a support column 200 arranged on the back of the photovoltaic panel 100, a backlight source 300 arranged on the back of the photovoltaic panel 100 and having a light-emitting surface facing the water surface, the light-emitting surface of the backlight source 300 is arranged vertically to the water surface, and the light intensity of the backlight source 300 is 3000-6000 lux.

[0062] As a specific embodiment, the backlight source 300 can adopt a 5630 LED single-color light bar (cool white light), a constant-current driving power supply adopts a Mean Well LRS-350-5 and supports PWM dimming (0-100% stepless adjustment), a photosensitive sensor adopts a TSL2591 high-spectrum light sensor, a control module adopts an ATmega2560, and an external ESP8266 WiFi module is connected.

[0063] For the embodiment, those skilled in the art can form the photovoltaic system according to the above structure, and the light adjustment method and the method of controlling the light time through the time module involved in the embodiment all belong to the prior art, and the embodiment does not make substantial improvements on the above method.

[0064] In summary, the photovoltaic system for aquaculture compensates for the sunlight blocked by the photovoltaic panel 100 in the crab pond by arranging the backlight source 300 on the back of the photovoltaic panel 100, so that the water plants are supplemented with light through the backlight source 300, and the growth of the water plants is avoided due to insufficient light.

[0065] In the description of the embodiment of the utility model, unless there is definite stipulation and limitation, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0066] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, terms such as "first", "second" and other numerical terms are used in this paper, and no sequence or order is implied, unless the text indicates explicitly. Therefore, the above-discussed first element, component, area, layer or section can be referred to as the second element, component, area, layer or section without departing from the teachings of the example embodiments.

[0067] Spatially relative terms, such as "inner", "outer", "below", "beneath", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0068] With the above ideal embodiments according to the utility model as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A photovoltaic system for aquaculture, characterized in that, It comprises: a photovoltaic panel (100) provided with a support column (200) on the back surface thereof; a backlight source (300) arranged on the back surface of the photovoltaic panel (100) and having a light-emitting surface facing the water surface; a control module electrically connected with a photosensitive sensor and a clock module to control the power supply circuit of the backlight source (300); wherein the photosensitive sensor is configured to detect the ambient light intensity on the back surface of the photovoltaic panel (100), and the control module is configured to control the power supply circuit to supply power to the backlight source (300) when the ambient light intensity is lower than a set value, to start the backlight source (300), and to control the backlight source (300) to be turned off at night according to the clock module.

2. The photovoltaic system according to claim 1, wherein: the back surface of the photovoltaic panel (100) is uniformly provided with a plurality of mounting strips (500), and the mounting strips (500) are provided with a plurality of mounting positions (510), and the backlight source (300) is assembled on the back surface of the photovoltaic panel (100) through the mounting positions (510).

3. The photovoltaic system according to claim 1, wherein: a support frame (600) is arranged above the support column (200), the support frame (600) is provided with a plurality of connecting rods (610), and the backlight source (300) is mounted on the support frame (600) through the connecting rods (610) and the light-emitting surface of the backlight source (300) is vertically arranged with the water surface.

4. The photovoltaic system according to claim 1, wherein: the backlight source (300) is started when the ambient light intensity is lower than 3000 lux.

5. The photovoltaic system according to claim 1, wherein: the backlight source (300) is electrically connected with the control module through a constant-current driving power supply which is connected to the power supply circuit of the backlight source (300); the control module is further configured to receive the ambient light intensity of the photosensitive sensor and generate a PWM signal for light intensity adjustment, and input the PWM signal to the control end of the constant-current driving power supply to control the brightness of the backlight source (300).

6. The photovoltaic system according to any one of claims 1-4, wherein: the backlight source (300) is electrically connected with the control module through a constant-current driving power supply which is connected to the power supply circuit of the backlight source (300); the control module is further configured to receive the ambient light intensity of the photosensitive sensor and generate a PWM signal for light intensity adjustment, and input the PWM signal to the control end of the constant-current driving power supply to control the light intensity of the backlight source (300) to be 3000-6000 lux, and control the light duration to be 10-12 hours according to the clock module.

7. A photovoltaic system for aquaculture, characterized in that, It comprises: a photovoltaic panel (100) provided with a support column (200) on the back surface thereof; a backlight source (300) arranged on the back surface of the photovoltaic panel (100); the photovoltaic panel (100) and the backlight source (300) are both electrically connected with a control module and a storage battery (400), and the control module is further electrically connected with a clock module and configured to control the control module to deliver the electric energy of the storage battery (400) to the backlight source (300) at night to provide light for the aquatic plants.

8. The photovoltaic system of claim 7, wherein, the back of the photovoltaic panel (100) is uniformly arranged with a plurality of mounting strips (500), the mounting strips (500) are provided with a plurality of mounting positions (510), and the backlight source (300) is assembled on the back of the photovoltaic panel (100) through the mounting positions (510).

9. The photovoltaic system of claim 7, wherein, the support column (200) is provided with a support frame (600) above, the support frame (600) is provided with a plurality of connecting rods (610), the backlight source (300) is installed on the support frame (600) through the connecting rods (610), and the light emitting surface of the backlight source (300) is vertically arranged with the water surface.

10. The photovoltaic system of any one of claims 7-9, wherein, the backlight source (300) is electrically connected with a constant current driving power supply and a control module by adjusting light intensity, the constant current driving power supply is connected to the power supply circuit of the backlight source (300); the control module is further configured to receive the ambient light intensity of the photosensitive sensor and generate a PWM signal for adjusting light intensity, and input the PWM signal to the control end of the constant current driving power supply to control the illumination intensity of the backlight source (300) to be 3000-6000 lux, and according to the clock module control, the illumination duration is 1-2 hours.

11. A photovoltaic device, characterized by including: a photovoltaic panel (100) provided with a support column (200) on the back thereof; a backlight source (300) arranged on the back of the photovoltaic panel (100) and having a light emitting surface facing the water surface; the light emitting surface of the backlight source (300) is vertically arranged with the water surface; and the illumination intensity of the backlight source (300) is 3000-6000 lux.