Photovoltaic power generation system

Abstract

The utility model discloses a photovoltaic power generation system. The photovoltaic power generation system comprises a photovoltaic power generation module; a power utilization module; the regulation and control module comprises a first switch chip, a second switch chip, a first field-effect tube, a second field-effect tube, a third field-effect tube, a buffer inductor and a buffer capacitor, a grid electrode of the first field-effect tube and a grid electrode of the second field-effect tube are respectively connected with the first switch chip, the second switch chip is connected with a grid electrode of the third field-effect tube, and the buffer inductor is connected with the buffer capacitor. The photovoltaic power generation module is connected with the drain electrode of the third field-effect tube, the source electrode of the third field-effect tube is connected with the source electrode of the first field-effect tube, the buffer inductor and the source electrode of the second field-effect tube are respectively connected with the drain electrode of the first field-effect tube, the drain electrode of the second field-effect tube is grounded, and the buffer inductor is also connected with the electric energy input end; the photovoltaic power generation module, the power utilization module and the regulation and control module are electrically connected with the control module; according to the photovoltaic power generation system provided by the utility model, the safety of the photovoltaic power generation system can be improved.

Description

Technical Field

[0001] The utility model relates to, but is not limited to, the technical field of photovoltaic power generation, and in particular to a photovoltaic power generation system. Background Art

[0002] Photovoltaic power generation is the process of converting solar energy into energy. Its core component is the photovoltaic panel, which converts the energy of photons in sunlight into direct current electricity through the photoelectric effect. As a clean, renewable energy source, photovoltaic power generation is of great significance to sustainable development.

[0003] In related technologies, due to the volatility and intermittency of sunlight intensity, the current generated by photovoltaic panels frequently fluctuates unstably, and the fluctuating current can easily damage electrical facilities connected to the photovoltaic panel circuits. Utility Model Content

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] The embodiment of the present utility model provides a photovoltaic power generation system, which can improve the safety of the photovoltaic power generation system.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention proposes a photovoltaic power generation system, characterized in that it includes: a photovoltaic power generation module for generating electric energy using solar energy, and the photovoltaic power generation module is provided with a photovoltaic output terminal; a power consumption module for consuming and storing the electric energy generated by the photovoltaic power generation module, and the power consumption module is provided with an electric energy input terminal; a control module, including a first switch chip, a second switch chip, a first field effect transistor, a second field effect transistor, a third field effect transistor, a buffer inductor and a buffer capacitor, the first switch chip is provided with a first switch terminal and a second switch terminal, the second switch chip is provided with a third switch terminal, the first switch terminal is connected to the gate of the first field effect transistor, and the second switch terminal The photovoltaic power generation module, the power consumption module and the regulation module are electrically connected to the control module.

[0007] In one embodiment, the photovoltaic power generation module includes a photovoltaic panel and a pan-tilt servo motor, the photovoltaic panel is connected to the active end of the pan-tilt servo motor, the pan-tilt servo motor is communicatively connected to the control module, and the control module is used to control the direction of the photovoltaic panel through the pan-tilt servo motor.

[0008] In one embodiment, the photovoltaic power generation module also includes a current comparison component and multiple photoresistors, the photoresistors are respectively installed around the photovoltaic panel, and each photoresistor is respectively connected to the current comparison component. The current comparison component is used to compare the detection current of the path where each photoresistor is located. The current comparison component is electrically connected to the control module, and the control module controls the direction of the photovoltaic panel according to the comparison of the detection current.

[0009] In one embodiment, the control module also includes a protection diode, the anode of the protection diode is grounded, and the cathode of the protection diode is connected to the power input end of the power consumption module; wherein, when the voltage between the cathode and anode of the protection diode is greater than a preset protection threshold, the protection diode is reversely conducted.

[0010] In one embodiment, the power consumption module includes a battery management component and an energy storage battery, the energy storage battery is connected to the battery management component, and the battery management component is electrically connected to the control module.

[0011] In one embodiment, a networking module is further included, which is connected to the control module. The networking module is used to obtain positioning information, weather information and time information. The control module is used to control the working state of the photovoltaic power generation module according to the positioning information, the weather information and the time information.

[0012] According to the solution provided by the embodiment of the present invention, a third field effect tube is connected between the photovoltaic power generation module and the power module, the gate of the third field effect tube is connected to the second switch chip, the source of the third field effect tube is directed toward the power module, and the drain of the third field effect tube is connected to the photovoltaic power generation module. When the sunlight in the environment is insufficient, the second switch chip controls the third field effect tube to be blocked. If the reverse voltage generated by the power module is greater than the power generation voltage generated by the photovoltaic power generation module under weak light, the blocked third field effect tube can prevent the power module from reversely charging the photovoltaic power generation module. If the photovoltaic power generation module generates When the generated voltage is greater than the reverse voltage generated by the power-consuming module, the photovoltaic power generation module can supply power to the power-consuming module through the parasitic diode in the third field-effect transistor, thereby improving the efficiency of the photovoltaic power generation system in utilizing sunlight; when there is sufficient sunlight in the environment, the generated voltage of the photovoltaic power generation module is constantly greater than the reverse voltage generated by the power-consuming module. At this time, the second switch chip controls the third field-effect transistor to conduct, so that a path is formed between the photovoltaic power generation module and the power-consuming module, reducing the resistance of the generated voltage output by the photovoltaic power generation module to the power-consuming module, reducing the energy loss of the path, and also improving the efficiency of the photovoltaic power generation system in utilizing sunlight.

[0013] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0015] Figure 1 An optional circuit diagram of a photovoltaic power generation system provided in an embodiment of the present utility model;

[0016] Figure 2 An optional system block diagram of a photovoltaic power generation system provided by an embodiment of the present utility model;

[0017] Figure 3 A schematic diagram of another optional structure of a photovoltaic power generation module provided in an embodiment of the present utility model;

[0018] Figure 4 An optional system block diagram of the battery management component provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0021] In the description of this utility model, "several" means one or more, "more" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and electrically connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] At present, due to the volatility and intermittent nature of sunlight intensity, the current generated by photovoltaic panels frequently fluctuates unstably, and the fluctuating current can easily cause damage to electrical facilities connected to the photovoltaic panel lines.

[0024] In order to solve the problem of frequent fluctuations in photovoltaic current, the utility model provides a photovoltaic power generation system, which includes: a photovoltaic power generation module for generating electricity using solar energy, and the photovoltaic power generation module is provided with a photovoltaic output terminal; a power module for consuming and storing the electricity generated by the photovoltaic power generation module, and the power module is provided with an energy input terminal; a control module, including a first switch chip, a second switch chip, a first field effect transistor, a second field effect transistor, a third field effect transistor, a buffer inductor and a buffer capacitor, the first switch chip is provided with a first switch terminal and a second switch terminal, the second switch chip is provided with a third switch terminal, the first switch terminal and the first field effect transistor are connected to each other, and the first field effect transistor is connected to the first field effect transistor. The first switching terminal is connected to the gate of the first field effect tube, the second switching terminal is connected to the gate of the second field effect tube, the third switching terminal is connected to the gate of the third field effect tube, the photovoltaic output terminal is connected to the drain of the third field effect tube, the source of the third field effect tube is connected to the source of the first field effect tube, one end of the buffer inductor and the source of the second field effect tube are respectively connected to the drain of the first field effect tube, the drain of the second field effect tube is grounded, the other end of the buffer inductor is connected to one end of the buffer capacitor, the other end of the buffer capacitor is grounded, and the other end of the buffer inductor is also connected to the power input terminal; the control module, the photovoltaic power generation module, the power consumption module and the regulation module are respectively electrically connected to the control module. According to the solution provided by the embodiment of the present invention, a third field effect tube is connected between the photovoltaic power generation module and the power module, the gate of the third field effect tube is connected to the second switch chip, the source of the third field effect tube is directed toward the power module, and the drain of the third field effect tube is connected to the photovoltaic power generation module. When the sunlight in the environment is insufficient, the second switch chip controls the third field effect tube to be blocked. If the reverse voltage generated by the power module is greater than the power generation voltage generated by the photovoltaic power generation module under weak light, the blocked third field effect tube can prevent the power module from reversely charging the photovoltaic power generation module. If the photovoltaic power generation module generates When the generated voltage is greater than the reverse voltage generated by the power-consuming module, the photovoltaic power generation module can supply power to the power-consuming module through the parasitic diode in the third field-effect transistor, thereby improving the efficiency of the photovoltaic power generation system in utilizing sunlight; when there is sufficient sunlight in the environment, the generated voltage of the photovoltaic power generation module is constantly greater than the reverse voltage generated by the power-consuming module. At this time, the second switch chip controls the third field-effect transistor to conduct, so that a path is formed between the photovoltaic power generation module and the power-consuming module, reducing the resistance of the generated voltage output by the photovoltaic power generation module to the power-consuming module, reducing the energy loss of the path, and also improving the efficiency of the photovoltaic power generation system in utilizing sunlight.

[0025] The photovoltaic power generation system provided by the embodiment of the present utility model is specifically described through the following embodiments. First, the photovoltaic power generation system in the embodiment of the present utility model is described.

[0026] The following is a further description of the embodiments of the present invention with reference to the accompanying drawings.

[0027] Reference Figures 1 to 2One embodiment of the present invention provides a photovoltaic power generation system, comprising:

[0028] The photovoltaic power generation module 100 is used to generate electricity using solar energy. The photovoltaic power generation module 100 is provided with a photovoltaic output terminal PV;

[0029] The power module 200 is used to consume and store the electric energy generated by the photovoltaic power generation module 100. The power module 200 is provided with an electric energy input terminal VBat;

[0030] The control module 300 includes a first switch chip U1, a first switch chip U2, a first field-effect transistor Q1, a second field-effect transistor Q2, a third field-effect transistor Q3, a buffer inductor L1, and a buffer capacitor C1. The first switch chip U1 is provided with a first switch terminal and a second switch terminal, and the first switch chip U2 is provided with a third switch terminal. The first switch terminal is connected to the gate of the first field-effect transistor Q1, the second switch terminal is connected to the gate of the second field-effect transistor Q2, and the third switch terminal is connected to the gate of the third field-effect transistor Q3. The photovoltaic output terminal PV is connected to the drain of the third field-effect transistor Q3, and the source of the third field-effect transistor Q3 is connected to the source of the first field-effect transistor Q1. One end of the buffer inductor L1 and the source of the second field-effect transistor Q2 are respectively connected to the drain of the first field-effect transistor Q1. The drain of the second field-effect transistor Q2 is grounded. The other end of the buffer inductor L1 is connected to one end of the buffer capacitor C1, the other end of the buffer capacitor C1 is grounded, and the other end of the buffer inductor L1 is also connected to the power input terminal VBat.

[0031] The control module 400 , the photovoltaic power generation module 100 , the power consumption module 200 and the regulation module 300 are electrically connected to the control module 400 , respectively.

[0032] In a specific embodiment, the control module 400 is used to obtain the power generation voltage of the photovoltaic power generation module 100 and the input voltage of the power consumption module 200, and control the photovoltaic power generation module 100, the power consumption module 200 and the regulation module 300 according to the power generation voltage and the input voltage.

[0033] It can be understood that by connecting the third field effect transistor Q3 between the photovoltaic power generation module 100 and the power module 200, the gate of the third field effect transistor Q3 is connected to the first switch chip U2, the source of the third field effect transistor Q3 is directed toward the power module 200, and the drain of the third field effect transistor Q3 is connected to the photovoltaic power generation module 100. When there is insufficient sunlight in the environment, the first switch chip U2 controls the third field effect transistor Q3 to be blocked. If the reverse voltage generated by the power module 200 is greater than the power generation voltage generated by the photovoltaic power generation module 100 under weak light, the blocked third field effect transistor Q3 can prevent the power module 200 from reversely charging the photovoltaic power generation module 100. If the photovoltaic power generation module 100 generates When the generated voltage of the photovoltaic power generation module 100 is greater than the reverse voltage generated by the power consumption module 200, the photovoltaic power generation module 100 can supply power to the power consumption module 200 through the parasitic diode in the third field effect transistor Q3, thereby improving the efficiency of the photovoltaic power generation system in utilizing sunlight; when there is sufficient sunlight in the environment, the generated voltage of the photovoltaic power generation module 100 is constantly greater than the reverse voltage generated by the power consumption module 200. At this time, the first switch chip U2 controls the third field effect transistor Q3 to be turned on, so that a path is formed between the photovoltaic power generation module 100 and the power consumption module 200, reducing the resistance of the generated voltage output by the photovoltaic power generation module 100 to the power consumption module 200, reducing the energy loss of the path, and also improving the efficiency of the photovoltaic power generation system in utilizing sunlight.

[0034] In a specific embodiment, the control module 400 obtains the power generation voltage of the photovoltaic power generation module 100; when the power generation voltage is greater than a preset photovoltaic threshold, the third field effect transistor Q3 is controlled to be turned on; the control module 400 continuously obtains the input voltage of the power consumption module 200; when the input voltage is less than a preset first power consumption threshold, the first field effect transistor Q1 is controlled to be turned on and the second field effect transistor Q2 is controlled to be blocked; when the input voltage is greater than a preset second power consumption threshold, the first field effect transistor Q1 is controlled to be blocked and the second field effect transistor Q2 is controlled to be turned on.

[0035] It is understandable that the control module 400 continuously detects the input voltage of the power-consuming module 200. When the input voltage is less than a preset first power threshold, the first switch chip U1 controls the first field-effect transistor Q1 to be turned on and the second field-effect transistor Q2 to be turned off. The photovoltaic power generation module 100, the first field-effect transistor Q1, and the power-consuming module 200 are turned on, and the buffer inductor L1 generates a reverse self-inductance voltage, thereby making the input voltage of the power-consuming module 200 less than the power generation voltage. The buffer capacitor C1 stores electrical energy, and the input voltage gradually increases with the increase of the conduction time. When the input voltage is greater than a preset second power threshold, the first switch chip U1 controls the first field-effect transistor Q1 to be turned off and the second field-effect transistor Q2 to be turned on. The path between the photovoltaic power generation module 100 and the power-consuming module 200 is disconnected, the buffer inductor L1 generates a positive self-inductance voltage, the buffer capacitor C1 releases the stored electrical energy, and the input voltage decreases after a brief increase. When the input voltage is less than the first power threshold, the above steps are executed again.

[0036] It should be noted that the second power consumption threshold needs to be lower than the maximum input voltage that the power consumption module 200 can withstand.

[0037] It can be understood that when the input voltage is lower than the preset first power consumption threshold, by setting a buffer inductor L1 in the path between the photovoltaic power generation module 100 and the power consumption module 200, the input voltage of the power module 200 can be made lower than the power generation voltage of the photovoltaic power generation module 100, thereby avoiding excessive input voltage causing excessive load on the power consumption module 200, and avoiding drastic fluctuations in the input voltage causing damage to the power consumption module 200. By setting the first field effect transistor Q1 and the second field effect transistor Q2, and by setting the first switch chip U1 to control the conduction or blocking frequency of the first field effect transistor Q1 and the second field effect transistor Q2 and the appropriate first power consumption threshold and second power consumption threshold, the input voltage can be maintained at the highest voltage level that does not damage the power consumption module 200, thereby improving the efficiency of power utilization while ensuring the safety of the power consumption module 200.

[0038] In a specific embodiment, the model of the first switch chip U1 is EG2104S, the model of the first switch chip U2 is B1212S, and the power module 200 can be a household power module, a mains power module, or an energy storage module, which will not be limited here.

[0039] In addition, refer to Figure 3 As shown, in some embodiments of the present invention, the photovoltaic power generation module 100 includes a photovoltaic panel 110 and a pan-tilt servo motor 120, the photovoltaic panel 110 is connected to the active end of the pan-tilt servo motor 120, the pan-tilt servo motor 120 is communicatively connected to the control module 400, and the control module 400 is used to control the direction of the photovoltaic panel 110 through the pan-tilt servo motor 120.

[0040] In a specific embodiment, the photovoltaic power generation module 100 includes multiple photovoltaic panels 110, and the photovoltaic panels 110 are arranged on the same plane. The control module 400 obtains the power generation voltage of each photovoltaic panel 110 respectively, determines the maximum voltage and its corresponding photovoltaic panel 110, and the control module 400 controls the pan-tilt servo motor 120 to rotate so that all photovoltaic panels 110 rotate one unit angle toward the position of the photovoltaic panel 110 corresponding to the maximum voltage. The control module 400 again obtains the power generation voltage of each photovoltaic panel 110 and determines the maximum voltage, and controls all photovoltaic panels 110 to rotate one unit angle toward the position of the photovoltaic panel 110 corresponding to the new maximum voltage, until the difference in the power generation voltage of any two photovoltaic panels 110 is less than the preset first angle difference threshold.

[0041] In a specific embodiment, the photovoltaic power generation module 100 also includes a wind speed sensor and a wind direction sensor, which are electrically connected to the control module 400 respectively. When the wind speed detected by the wind speed sensor is greater than a preset speed threshold, the control module 400 controls the photovoltaic panel 110 to rotate so that the photovoltaic panel 110 is parallel to the wind direction.

[0042] In a specific embodiment, the photovoltaic power generation module further includes a button assembly (not shown in the figure), and the user can choose to manually adjust the angle of the photovoltaic panel or automatically adjust the angle of the photovoltaic panel by pressing the button.

[0043] In addition, refer again Figure 3 As shown, in some embodiments of the present invention, the photovoltaic power generation module 100 further includes a current comparison component (not shown in the figure) and a plurality of photoresistors 130. The photoresistors 130 are respectively installed around the photovoltaic panel 110. Each photoresistor 130 is respectively connected to the current comparison component. The current comparison component is used to compare the detection current of the path where each photoresistor 130 is located. The current comparison component is electrically connected to the control module 400. The control module 400 controls the direction of the photovoltaic panel 110 according to the comparison of the detection current.

[0044] In a specific embodiment, five photoresistors 130 are provided on each photovoltaic panel 110, and the photoresistors 130 are respectively installed in the east, south, west, north and middle of the photovoltaic panel 110. When the detection current of the photoresistor 130 located in the middle is the largest, the angle of the photovoltaic panel 110 is not adjusted; when the detection current of the path where the photoresistor 130 located on the side is greater than the detection current of other parts, and the difference between the detection currents is greater than the preset second angle difference threshold, the control module 400 controls the photovoltaic panel 110 to rotate one unit angle in the direction of the maximum detection current. When the difference between the detection currents of each side is less than the second angle difference threshold, or the detection current in the middle is the largest, the angle adjustment of the photovoltaic panel 110 is suspended.

[0045] In a specific embodiment, the control module 400 obtains the detection current of the path where each photoresistor 130 is located, compares the magnitudes of all detection currents, and determines the maximum current resistance; the control module 400 controls the photovoltaic panel 110 to rotate a preset unit angle in the direction where the maximum current resistance is located.

[0046] In a specific embodiment, the current comparison component includes multiple ammeters (not shown in the figure), which are respectively connected in series with each photoresistor 130. The control module 400 reads the readings of each ammeter to adjust the angle of the photovoltaic panel 110.

[0047] In addition, refer again Figure 1 As shown, in some embodiments of the present invention, the control module 300 further includes a protection diode D1, the anode of the protection diode D1 is grounded, and the cathode of the protection diode D1 is connected to the power input terminal VBat of the power module 200;

[0048] When the voltage between the cathode and the anode of the protection diode D1 is greater than a preset protection threshold, the protection diode D1 conducts in reverse.

[0049] In a specific embodiment, the protection threshold of the protection diode D1 is equal to the maximum load threshold of the power module 200 .

[0050] It can be understood that when the input voltage of the power module 200 is less than the maximum load threshold, the protection diode D1 is blocked, and the current output by the photovoltaic power generation module 100 flows into the power module 200. When the input voltage of the power module 200 is greater than the maximum load threshold, the protection diode D1 is turned on, and the current flows into the ground, thereby protecting the power module 200 from damage.

[0051] In a specific embodiment, the control module 300 also includes a first fuse F1, one end of the first fuse F1 is connected to the buffer inductor L1, and the other end of the first fuse F1 is connected to the power module 200. When a short circuit occurs between the photovoltaic power generation module 100 and the power module 200, the temperature of the first fuse F1 rises and melts, thereby disconnecting the photovoltaic power generation module 100 from the power module 200.

[0052] In addition, the control module 300 further includes a second fuse F2 , one end of the second fuse F2 is connected to the photovoltaic output terminal PV, and the other end of the second fuse F2 is connected to the drain of the third field effect transistor Q3 .

[0053] In addition, refer to Figure 4As shown, in some embodiments of the present invention, the power module 200 includes a battery management component 210 and an energy storage battery 220 , the energy storage battery 220 is connected to the battery management component 210 , and the battery management component 210 is electrically connected to the control module 400 .

[0054] In a specific embodiment, the battery management component 210 includes a voltage sensor 211, a current sensor 212, a temperature sensor 213, an alarm 214 and a battery controller 215. The alarm 214, the voltage sensor 211, the current sensor 212 and the temperature sensor 213 are respectively connected to the battery controller 215. The voltage sensor 211 is used to obtain the voltage value between the positive and negative poles of the battery, the current sensor 212 is used to obtain the current value of the circuit where the current is located, and the temperature sensor 213 is used to obtain the operating temperature of the battery surface. The battery controller 215 controls the charge and discharge status of the energy storage battery 220 based on the above voltage value, current value and operating temperature. When the controller determines that the current energy storage battery 220 is in an abnormal state, the controller stops charging and discharging the energy storage battery 220, controls the alarm 214 to sound an alarm, collects abnormal information of the energy storage battery 220 and sends it to the user.

[0055] In a specific embodiment, the protection threshold of the protection diode D1 is equal to the maximum charging threshold of the energy storage battery 220 .

[0056] In addition, refer again Figure 2 As shown, some embodiments of the present invention further include a networking module 500, which is connected to the control module 400. The networking module 500 is used to obtain positioning information, weather information and time information, and the control module 400 is used to control the working state of the photovoltaic power generation module 100 according to the positioning information, weather information and time information.

[0057] In a specific embodiment, the control module 400 obtains positioning information and time information of the time zone through the networking module 500. The positioning information includes the target longitude and target latitude of the location of the photovoltaic power generation system, and determines the solar altitude angle and solar azimuth angle at the current time based on the target longitude, target latitude and time information of the time zone.

[0058] In a specific embodiment, the priority of adjusting the angle based on the power generation voltage of each photovoltaic panel 110 is higher than the priority of adjusting the angle based on the detection circuit of the photoresistor 130. From 6:00 to 18:00 of standard time, the angle of the photovoltaic panel 110 is adjusted based on the time information and positioning information every hour, and the angle of the photovoltaic panel 110 is adjusted based on the power generation voltage of the photovoltaic panel 110 every 10 minutes.

[0059] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present invention should be within the scope of the present invention.

Claims

1. A photovoltaic power generation system, characterized in that: include: A photovoltaic power generation module, used to generate electrical energy using solar energy, wherein the photovoltaic power generation module is provided with a photovoltaic output terminal; A power consumption module, used for consuming and storing the electric energy generated by the photovoltaic power generation module, wherein the power consumption module is provided with an electric energy input terminal; A control module includes a first switch chip, a second switch chip, a first field-effect transistor, a second field-effect transistor, a third field-effect transistor, a buffer inductor, and a buffer capacitor. The first switch chip is provided with a first switch end and a second switch end, and the second switch chip is provided with a third switch end. The first switch end is connected to the gate of the first field-effect transistor, the second switch end is connected to the gate of the second field-effect transistor, and the third switch end is connected to the gate of the third field-effect transistor. The photovoltaic output end is connected to the drain of the third field-effect transistor, and the source of the third field-effect transistor is connected to the source of the first field-effect transistor. One end of the buffer inductor and the source of the second field-effect transistor are respectively connected to the drain of the first field-effect transistor. The drain of the second field-effect transistor is grounded. The other end of the buffer inductor is connected to one end of the buffer capacitor, the other end of the buffer capacitor is grounded, and the other end of the buffer inductor is also connected to the power input end. The photovoltaic power generation module, the power consumption module and the regulation module are electrically connected to the control module respectively.

2. The photovoltaic power generation system according to claim 1, characterized in that: The photovoltaic power generation module includes a photovoltaic panel and a pan-tilt servo motor. The photovoltaic panel is connected to the active end of the pan-tilt servo motor. The pan-tilt servo motor is communicatively connected to the control module. The control module is used to control the direction of the photovoltaic panel through the pan-tilt servo motor.

3. The photovoltaic power generation system according to claim 2, characterized in that: The photovoltaic power generation module also includes a current comparison component and multiple photoresistors. The photoresistors are respectively installed around the photovoltaic panel, and each photoresistor is connected to the current comparison component. The current comparison component is used to compare the detection current of the path where each photoresistor is located. The current comparison component is electrically connected to the control module, and the control module controls the direction of the photovoltaic panel according to the comparison of the detection current.

4. The photovoltaic power generation system according to claim 1, characterized in that: The control module further includes a protection diode, the anode of the protection diode is grounded, and the cathode of the protection diode is connected to the power input terminal of the power module; When the voltage between the cathode and the anode of the protection diode is greater than a preset protection threshold, the protection diode conducts in reverse.

5. The photovoltaic power generation system according to claim 1, characterized in that: The power module includes a battery management component and an energy storage battery. The energy storage battery is connected to the battery management component, and the battery management component is electrically connected to the control module.

6. The photovoltaic power generation system according to claim 1, characterized in that: It also includes a networking module, which is connected to the control module. The networking module is used to obtain positioning information, weather information and time information. The control module is used to control the working state of the photovoltaic power generation module according to the positioning information, the weather information and the time information.

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