Intelligent photovoltaic cell performance testing device

Abstract

The utility model provides an intelligent photovoltaic cell performance testing device, which relates to the technical field of solar photovoltaic testing and comprises a current and voltage detection unit, a voltage detection unit and a power supply unit. The GPS receiving unit is used for receiving GPS positioning information; the data processing unit is used for processing and analyzing the collected data; the data transmission unit is used for transmitting the processed data to a cloud server; the data receiving unit is used for receiving instructions or feedback information from the cloud server; and the mechanical structure unit is used for fixing and angle adjustment of the photovoltaic panel. According to the utility model, through efficient and stable current and voltage detection, rapid and reliable data transmission and real-time and accurate geographic information acquisition, accurate testing and analysis of the performance of the photovoltaic cell are realized, and the system is suitable for teaching and experimental research.

Description

Technical Field

[0001] The utility model relates to the technical field of solar photovoltaic testing, in particular to an intelligent photovoltaic cell performance testing device. Background Art

[0002] With the development of solar energy technology and the innovation of education models, the demand for testing solar photovoltaic cell performance and teaching tools is increasing day by day. The existing testing equipment often has the following main problems:

[0003] First, the function is single. Many photovoltaic cell performance testing equipment on the market at present can only measure basic current and voltage parameters, lacking the comprehensive performance testing ability of photovoltaic cells under different environmental conditions and unable to meet complex experimental requirements.

[0004] Second, the flexibility is lacking. The existing testing equipment is usually of a fixed structure and cannot adjust the angle and orientation of the photovoltaic panel, resulting in the inability to simulate and test the performance of photovoltaic cells at different angles and orientations. This limitation makes the experimental results lack comprehensiveness and unable to fully reflect the performance of photovoltaic cells in actual use.

[0005] Third, the practicability is insufficient. There are deficiencies in data processing and transmission of the existing equipment. The data transmission method is single, the transmission speed and stability are not high, and most equipment does not have the functions of remote monitoring and control. This situation limits the interaction and flexible operation of teachers and students in the teaching and experimental process and cannot achieve real-time data analysis and remote experimental control.

[0006] In addition, the integration degree of the existing testing equipment is low, the modular degree is not high, and it is not convenient to carry out system upgrade and function expansion. This situation makes schools and research institutions unable to update and improve experimental teaching tools in a timely manner in the face of the ever-developing solar energy technology, affecting the teaching effect and scientific research efficiency.

[0007] To sum up, the existing solar photovoltaic cell performance testing equipment has obvious deficiencies in terms of function, flexibility, practicability and scalability, and there is an urgent need for an intelligent photovoltaic cell performance testing device that can comprehensively solve these problems to meet the diverse and efficient needs of modern education for experimental teaching tools. Content of the Utility Model

[0008] In order to solve the technical problems in the prior art, the utility model provides an intelligent photovoltaic cell performance testing device.

[0009] The technical solution provided by the utility model is as follows:

[0010] An intelligent photovoltaic cell performance testing device provided by the utility model includes:

[0011] A current-voltage detection unit for detecting the current and voltage of a photovoltaic cell, the current-voltage detection unit including an integrated module for current and voltage detection;

[0012] A GPS receiving unit for receiving GPS positioning information, the GPS receiving unit for collecting longitude and latitude information to provide geographical location data;

[0013] A data processing unit for processing and analyzing the collected data, the data processing unit including a main control chip responsible for formatting current, voltage, angle, and GPS information into data packets;

[0014] A data transmission unit for transmitting the processed data to a cloud server, the data transmission unit consisting of a chip supporting cellular network and Wi-Fi communication to ensure diverse data transmission methods;

[0015] A data receiving unit for receiving instructions or feedback information from the cloud server;

[0016] A mechanical structure unit for fixing the photovoltaic panel and adjusting the angle, the mechanical structure unit controlling the movement of the photovoltaic panel on the XYZ axes through a dual servo;

[0017] A power management module including a charging integrated circuit, a Type-C interface for power supply and charging, a MOS tube circuit for automatic power switching, a large resistor voltage division circuit connected to the ADC interface of the main control chip for battery power monitoring, a buck converter for reducing the 5V voltage to 3.3V, and a boost converter for boosting the lithium battery voltage to 5V;

[0018] A power indicator for indicating the power status;

[0019] A detection circuit including a terminal block for connecting the solar panel, a load resistor, positive and negative pins for current-voltage detection, and a switch, and connecting the GND of the detection circuit to the general GND through a bead inductor to enhance circuit stability.

[0020] Further, the charging integrated circuit of the power management module is used in cooperation with the Type-C interface, capable of supplying power and charging the battery through the Type-C interface, and the MOS tube circuit realizes automatic power switching, disconnecting the battery power supply when the Type-C interface is connected and using the Type-C interface for power supply.

[0021] Further, the power management module is connected to the ADC interface of the main control chip through a large resistor voltage division circuit to monitor the battery power in real time.

[0022] Further, the main control chip steps down the 5V voltage to 3.3V through a buck converter and steps up the lithium battery voltage to 5V through a boost converter to meet the power requirements of different modules.

[0023] Further, the detection circuit is connected to the photovoltaic panel, load resistor, positive and negative pins for current and voltage detection, and switch through a terminal block, and the GND of the detection circuit is connected to the general GND through a bead inductor to enhance the circuit stability.

[0024] Further, the current and voltage detection unit includes a module integrating current detection and voltage detection functions to ensure accurate measurement of the current and voltage parameters of the photovoltaic cell.

[0025] Further, the data processing unit is responsible for formatting the collected current, voltage, angle, and GPS information into strings and packing them into detection data packets for transmission to the data transmission unit.

[0026] Further, the data transmission unit is composed of a chip supporting cellular network and Wi-Fi communication to ensure diverse data transmission methods and effectively transmit the processed data to the cloud platform.

[0027] Further, the mechanical structure unit controls the movement of the photovoltaic panel on the XYZ axes through a double servo to achieve automatic adjustment of different illumination angles, thereby obtaining more accurate performance data.

[0028] Further, the Internet of Things management system adopts an open-source platform and is deployed through Docker technology to realize real-time data display and remote control functions, and completes data transmission through a chip supporting the MQTT protocol. This chip is connected to the serial port of the development board and receives AT commands to realize network connection and data transparent transmission.

[0029] The beneficial effects brought by the technical solution provided by the present utility model at least include:

[0030] (1) In the present utility model, by integrating high-precision current and voltage detection modules, accurate measurement of the photovoltaic cell parameters is ensured. This device can provide stable and accurate test data under various environmental conditions, greatly improving the reliability and credibility of the experimental results;

[0031] (2) In the present utility model, by using a transmission module supporting cellular network and Wi-Fi communication, and equipped with GPS and 4G modules, the present utility model significantly improves the speed and stability of data transmission. Especially in outdoor areas or areas with poor Wi-Fi signals, the application of the 4G module ensures the continuity and stability of data transmission, facilitating the calculation of the optimal orientation and the analysis of environmental conditions;

[0032] (3) In the present invention, based on the Internet of Things management system of the open source platform ThingsBoard, the present invention realizes real-time display and remote control of data. By supporting the chip of MQTT protocol, the system improves the efficiency and stability of data transmission, and at the same time enhances the flexibility and scalability of the system, so that it can adapt to different experimental needs and teaching environments, and improves the overall user experience and experimental effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of the structure of an intelligent photovoltaic cell performance testing device provided by an embodiment of the utility model;

[0035] Figure 2 A schematic diagram of the working process of an intelligent photovoltaic cell performance testing device provided by an embodiment of the utility model;

[0036] Figure 3 An MCU circuit diagram of an intelligent photovoltaic cell performance test device provided by an embodiment of the utility model;

[0037] Figure 4 A circuit diagram of an intelligent photovoltaic cell performance test device provided by an embodiment of the utility model Figure 1 ;

[0038] Figure 5 A circuit diagram of an intelligent photovoltaic cell performance test device provided by an embodiment of the utility model Figure 2 . DETAILED DESCRIPTION

[0039] The technical solution of the present utility model is described below in conjunction with the accompanying drawings.

[0040] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "example" is intended to present the concept in a specific way. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either of the two.

[0041] To make the technical problems, technical solutions, and advantages to be solved by the present utility model clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0042] Referring to the attached drawings of the specification Figure 1 , a schematic structural diagram of an intelligent photovoltaic cell performance testing device provided by an embodiment of the present utility model is shown.

[0043] Referring to the attached drawings of the specification Figure 2 , a schematic working flow diagram of an intelligent photovoltaic cell performance testing device provided by an embodiment of the present utility model is shown.

[0044] An embodiment of the present utility model provides an intelligent photovoltaic cell performance testing device, including:

[0045] A current-voltage detection unit for detecting the current and voltage of a photovoltaic cell, and the current-voltage detection unit includes an integrated module for current and voltage detection;

[0046] A GPS receiving unit for receiving GPS positioning information, and the GPS receiving unit is used to collect longitude and latitude information to provide geographical location data;

[0047] A data processing unit for processing and analyzing the collected data, and the data processing unit includes a main control chip responsible for formatting current, voltage, angle, and GPS information into data packets;

[0048] A data transmission unit for transmitting the processed data to a cloud server, and the data transmission unit is composed of a chip supporting cellular network and Wi-Fi communication to ensure diverse data transmission methods;

[0049] A data receiving unit for receiving instructions or feedback information from the cloud server;

[0050] A mechanical structure unit for fixing the photovoltaic panel and adjusting the angle, and the mechanical structure unit controls the movement of the photovoltaic panel on the XYZ axes through a double servo;

[0051] A power management module includes a charging integrated circuit, a Type-C interface for power supply and charging, a MOS tube circuit for automatic power switching, a large resistor voltage division circuit connected to the ADC interface of the main control chip for battery power monitoring, a buck converter for reducing the 5V voltage to 3.3V, and a boost converter for boosting the lithium battery voltage to 5V;

[0052] A power indicator for indicating the power status;

[0053] The detection circuit includes a terminal for connecting a solar panel, a load resistor, positive and negative pins for current and voltage detection, and a switch, and connects the GND of the detection circuit to the general GND through a bead inductor to enhance circuit stability.

[0054] In a possible implementation, the charging integrated circuit of the power management module is used in cooperation with the Type-C interface, capable of supplying power and charging the battery through the Type-C interface, and the MOS transistor circuit realizes automatic power switching, disconnecting the battery power supply when the Type-C interface is plugged in and using the Type-C interface for power supply.

[0055] In a possible implementation, the power management module is connected to the ADC interface of the main control chip through a large resistor voltage division circuit to monitor the battery power in real time.

[0056] In a possible implementation, the main control chip reduces the 5V voltage to 3.3V through a buck converter and raises the lithium battery voltage to 5V through a boost converter to meet the power requirements of different modules.

[0057] In a possible implementation, the detection circuit is connected to a photovoltaic panel, a load resistor, positive and negative pins for current and voltage detection, and a switch through a terminal, and connects the GND of the detection circuit to the general GND through a bead inductor to enhance circuit stability.

[0058] In a possible implementation, the current and voltage detection unit includes a module integrating current detection and voltage detection functions to ensure accurate measurement of the current and voltage parameters of the photovoltaic cell.

[0059] In a possible implementation, the data processing unit is responsible for formatting the collected current, voltage, angle, and GPS information into strings and packing them into detection data packets for transmission to the data transmission unit.

[0060] In a possible implementation, the data transmission unit is composed of a chip supporting cellular network and Wi-Fi communication, ensuring diverse data transmission methods and effectively transmitting the processed data to the cloud platform.

[0061] In a possible implementation, the mechanical structure unit controls the movement of the photovoltaic panel on the XYZ axes through a double servo to achieve automatic adjustment of different illumination angles, thereby obtaining more accurate performance data.

[0062] In a possible implementation, the Internet of Things management system adopts an open-source platform, deploys through Docker technology, realizes real-time data display and remote control functions, and completes data transmission through a chip that supports the MQTT protocol. This chip is connected to the serial port of the development board and receives AT commands to achieve network connection and data transparent transmission.

[0063] As Figure 1 shown, the main control chip is responsible for processing all sensor data and controlling the operation of other modules. The current and voltage detection module integrates current detection and voltage detection functions to ensure accurate measurement of the current and voltage parameters of the solar photovoltaic cell. The GPS module is used to collect latitude and longitude information to provide accurate geographical location data support for the cloud platform. The data transmission module consists of an AIK-ESP-01 chip and a 4G module, supporting cellular network and Wi-Fi communications, ensuring diverse data transmission methods. The power management module includes a charging integrated circuit (TP4056X-42-ESOP8), a Type-C interface, a MOS tube circuit, a large resistor voltage division circuit, a buck converter (CJA1117B-3.3), and a boost converter (PW5303). The mechanical structure unit controls the movement of the solar panel on the XYZ axes through double servos to achieve automatic adjustment of different lighting angles. The cloud platform based on ThingsBoard is deployed through Docker technology to realize real-time data display and remote control functions. The user interaction interface inputs data through the operation panel and graphically displays the data processing results on the display panel. The data transmission module is responsible for data exchange with the cloud platform to achieve interaction between the user and the system.

[0064] The current and voltage detection module is connected to the main control chip. The GPS module is connected to the main control chip. The main control chip is connected to the data transmission module. The data transmission module is connected to the cloud platform. The mechanical structure unit is connected to the main control chip. The power management module is connected to the main control chip. The power management module is connected to the data transmission module. The power management module is connected to the mechanical structure unit. The cloud platform is connected to the user interaction interface.

[0065] This embodiment relates to an intelligent photovoltaic cell performance testing device, aiming to provide efficient and stable current and voltage detection, ensure the accuracy of test data, and realize real-time data display and remote control functions through advanced data transmission and Internet of Things management system. The specific implementation is as follows:

[0066] The measuring device includes:

[0067] The current and voltage detection unit: adopts the INA226 module, which integrates current detection and voltage detection functions to ensure accurate measurement of the current and voltage parameters of the solar photovoltaic cell, and the measurement accuracy reaches ±1%.

[0068] Main control chip: STM32F103ZET6 chip, which is responsible for processing measurement data and formatting the collected current, voltage, angle, and GPS information into strings, and packing them into detection data packets for transmission to the data transmission module.

[0069] GPS receiving unit: Adopts the ATK1218-BD module, which is responsible for collecting the longitude and latitude information of the device, providing accurate geographical location data support for the cloud platform, and facilitating the calculation of the optimal orientation and the analysis of environmental conditions.

[0070] Data transmission module: Mainly composed of the AIK-ESP-01 chip, which supports cellular network and Wi-Fi communication, ensuring diverse data transmission methods. The firmware supporting the MQTT protocol is burned on the AIK-ESP-01 chip to optimize the transmission efficiency and stability of data between cloud platforms.

[0071] 4G module: A 4G module is added to enhance the data transmission ability. Especially in outdoor areas or areas with poor Wi-Fi signals, the 4G module can ensure the continuity and stability of data transmission.

[0072] Cloud platform: Based on ThingsBoard and deployed through Docker technology, it realizes the real-time display and remote control functions of data. Users can view real-time data through a graphical interface, improving the accessibility of data and the user experience.

[0073] Dual-servo control system: Controls the movement of the solar panel on the XYZ axes through dual servos to obtain more accurate performance data. The servo system ensures the stability and flexibility of the solar panel at various angles, facilitating all-round photovoltaic performance testing. After the control instruction is issued, the dual-servo structure can quickly make corresponding operations.

[0074] Charging integrated circuit: Adopts TP4056X-42-ESOP8 as the charging IC and uses its pins to externally connect a 3.7V lithium battery.

[0075] Type-C interface: Used for power supply and battery charging. The MOS tube circuit realizes automatic power switching, disconnecting the battery power supply when the Type-C interface is connected and using the Type-C interface for power supply.

[0076] Power indicator: The LED is used to indicate the power status.

[0077] Battery power monitoring: Uses a large-resistance voltage division circuit in cooperation with the ADC interface of STM32 to monitor the battery power.

[0078] Voltage conversion: CJA1117B-3.3 realizes the buck conversion from 5V to 3.3V, and PW5303 realizes the boost conversion of the lithium battery to 5V.

[0079] Terminal: Connect the solar panel, load resistor, positive and negative pins for current and voltage detection, and the switch to form a detection circuit.

[0080] Circuit stability: Connect a bead inductor between the GND of the detection circuit and the general GND to enhance the circuit stability.

[0081] Internet of Things (IoT) management system: Use the open-source ThingsBoard as the IoT management system, deploy it through Docker technology, and realize the functions of real-time data display and remote control. A set of panels for real-time display of the current, voltage, power, and angle of the solar panel are developed on the ThingsBoard platform, and the remote control of the experimental equipment is realized through the RPC function.

[0082] Operation panel and display panel: Users input data through the operation panel, and the display panel graphically displays the data processing results. The data transmission module is responsible for data exchange with the cloud platform to realize the interaction between users and the system.

[0083] Overall solution: This teaching aid includes a measurement device, a cloud server device, and a user terminal. The INA226 module is used for current and voltage detection in the measurement device, and the STM32F103ZET6 chip is used as the main control chip. At the same time, the AIK-ESP-01 module is installed to realize the functions of data networking and transparent transmission. In addition, the device also integrates a GPS module to obtain geographical location information, adds a 4G module to enhance data transmission capabilities, and is equipped with an LCD display module for real-time data display. The movement of the solar panel on the XYZ axes is controlled by a dual servo motor to realize automatic adjustment of different illumination angles.

[0084] Preferred solution: To improve the reliability and flexibility of data transmission, this teaching aid uses the open-source ThingsBoard as the IoT management system, deploys it through Docker technology, and realizes the functions of real-time data display and remote control. Precise positioning is carried out through the GPS module, which can record and identify the geographical coordinates of the location where the photovoltaic panel is located. These location information helps to analyze the performance of photovoltaic cells under different geographical locations and environmental conditions, and provides data support for further research and optimization.

[0085] Through the combination of the above modules and functions, this intelligent photovoltaic cell performance testing device not only improves the speed and stability of data transmission, but also facilitates the calculation of the optimal orientation and the analysis of environmental conditions through the geographical location information obtained by the GPS module. The IoT management system based on ThingsBoard not only supports real-time data display and remote control, but also improves the flexibility and scalability of the system, meeting the diverse needs of modern education for experimental teaching tools.

[0086] Refer to the attached instruction manualFigures 3 - 5 , showing the circuit diagram of an intelligent photovoltaic cell performance testing device provided by an embodiment of the present utility model.

[0087] MCU module

[0088] Chip: STM32F103ZET6

[0089] Function: As the main control chip of the system, it is responsible for receiving and processing data from each sensor, controlling the operation of other modules, and communicating with the data transmission module.

[0090] Main components: Include the pin configuration of the STM32F103ZET6 chip and its peripheral circuits, such as power filter capacitors, reset circuits, crystal oscillator circuits, etc.

[0091] Current and voltage detection module (INA226)

[0092] Chip: INA226

[0093] Function: Integrates current detection and voltage detection functions, and is used to accurately measure the current and voltage parameters of photovoltaic cells.

[0094] Main components: Include INA226 chip, current detection resistor, voltage divider resistor, etc.

[0095] GPS module (ATK1218-BD)

[0096] Chip: ATK1218-BD

[0097] Function: Responsible for receiving geographical location data, collecting the longitude and latitude information of the device, and providing accurate geographical location data support for the cloud platform.

[0098] Main components: ATK1218-BD chip, antenna connector, power supply circuit, etc.

[0099] Power management module

[0100] Function: Manages the system power supply to ensure stable power supply for each part. It includes multiple sub-circuits:

[0101] Charging integrated circuit (TP4056X-42-ESOP8): Responsible for charging the lithium battery.

[0102] Type-C interface: Used for power supply and charging.

[0103] MOS tube circuit: Realizes automatic switching of power supply.

[0104] Large resistor voltage division circuit: Used for battery power monitoring.

[0105] Step-down converter (CJA1117B-3.3): Step down the 5V voltage to 3.3V.

[0106] Boost converter (PW5303): Boost the lithium battery voltage to 5V.

[0107] Main components: TP4056X-42-ESOP8, Type-C interface, MOS transistor, large resistor voltage-dividing resistors, CJA1117B-3.3, PW5303, etc.

[0108] USB_TTLUART1 module

[0109] Function: Provide the conversion function from USB to serial port for easy communication with a computer or other devices.

[0110] Main components: USB interface, TTL level conversion chip (such as CH340 or FT232), related connection circuits, etc.

[0111] BOOST module (PW5303)

[0112] Chip: PW5303

[0113] Function: Contain a boost converter circuit to boost the lithium battery voltage to 5V required by the system.

[0114] Main components: PW5303 chip, input and output capacitors, boost inductor, etc.

[0115] Step-down module (LDO, CJA1117B-3.3)

[0116] Chip: CJA1117B-3.3

[0117] Function: Contain a step-down converter circuit to step down the 5V voltage to 3.3V for supplying the parts in the system that require 3.3V voltage.

[0118] Main components: CJA1117B-3.3 chip, input and output capacitors, etc.

[0119] LED module

[0120] Function: Contain a power indicator circuit for indicating the power status.

[0121] Main components: LED indicator, resistor, etc.

[0122] Button module (KEY)

[0123] Function: Contain a function button circuit for user input and system control.

[0124] Main components: button switch, resistor, etc.

[0125] Data transmission module (AIK-ESP-01 and 4G module)

[0126] Chip: AIK-ESP-01

[0127] Function: Composed of AIK-ESP-01 and 4G module, it supports cellular network and Wi-Fi communication, realizes diversified data transmission methods, and ensures data continuity and stability.

[0128] Main components: AIK-ESP-01 chip, 4G module, related connection circuits, etc.

[0129] Detection circuit

[0130] Function: Connects the photovoltaic panel, load resistor, positive and negative pins for current and voltage detection, and switch through the terminal block. Connects the GND of the detection circuit to the general GND through the bead inductor to enhance the circuit stability.

[0131] Main components: Terminal block, load resistor, bead inductor, etc.

[0132] Mechanical structure unit (dual servo control)

[0133] Function: Includes dual servos, controls the movement of the solar panel on the XYZ axes, realizes automatic adjustment of different illumination angles, and thus obtains more accurate performance data.

[0134] Main components: Dual servos, control circuit, etc.

[0135] Cloud platform and data processing

[0136] Function: Based on the ThingsBoard IoT management system, deployed through Docker technology, realizes real-time data display and remote control functions. The main control chip is responsible for formatting the collected current, voltage, angle, and GPS information into strings, packing them into detection data packets, transmitting them to the data transmission module, and finally uploading them to the cloud platform.

[0137] Main components: Cloud server, data receiving module, data processing module, data feedback module, etc.

[0138] The beneficial effects brought by the technical solution provided by the embodiments of the present utility model at least include:

[0139] (1) In the present utility model, by integrating high-precision current and voltage detection modules, accurate measurement of photovoltaic cell parameters is ensured. This device can provide stable and accurate test data under various environmental conditions, greatly improving the reliability and credibility of experimental results;

[0140] (2) In the present utility model, by using a transmission module that supports cellular network and Wi-Fi communication, and equipped with a GPS and a 4G module, the present utility model significantly improves the speed and stability of data transmission. Especially in outdoor areas or areas with poor Wi-Fi signals, the application of the 4G module ensures the continuity and stability of data transmission, facilitating the calculation of the optimal orientation and the analysis of environmental conditions.

[0141] (3) In the present utility model, based on the Internet of Things management system of the open-source platform ThingsBoard, the present utility model realizes the real-time display and remote control of data. Through the chip that supports the MQTT protocol, this system improves the efficiency and stability of data transmission, while enhancing the flexibility and scalability of the system, enabling it to adapt to different experimental requirements and teaching environments, and improving the overall usage experience and experimental effect.

[0142] The above content is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

[0143] The following points need to be explained:

[0144] (1) The attached drawings of the embodiments of the present utility model only relate to the structures involved in the embodiments of the present utility model, and other structures can refer to the usual designs.

[0145] (2) For clarity, in the attached drawings used to describe the embodiments of the present utility model, the thickness of the layer or region is enlarged or reduced, that is, these drawings are not drawn according to the actual ratio. It can be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under another element or there can be an intermediate element.

[0146] (3) Without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0147] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. The protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. An intelligent photovoltaic cell performance testing device, characterized in that, Including: A current-voltage detection unit for detecting the current and voltage of a photovoltaic cell, the current-voltage detection unit including an integrated module for current and voltage detection; A GPS receiving unit for receiving GPS positioning information, the GPS receiving unit being used to collect longitude and latitude information to provide geographical location data; A data processing unit for processing and analyzing the collected data, the data processing unit including a main control chip responsible for formatting current, voltage, angle, and GPS information into data packets; A data transmission unit for transmitting the processed data to a cloud server, the data transmission unit being composed of chips supporting cellular network and Wi-Fi communication to ensure diverse data transmission methods; A data receiving unit for receiving instructions or feedback information from the cloud server; A mechanical structure unit for fixing the photovoltaic panel and adjusting the angle, the mechanical structure unit controlling the movement of the photovoltaic panel on the XYZ axes through dual servos; A power management module including a charging integrated circuit, a Type-C interface for power supply and charging, a MOS tube circuit for automatic power switching, a large resistor voltage division circuit connected to the ADC interface of the main control chip for battery power monitoring, a buck converter for reducing the 5V voltage to 3.3V, and a boost converter for boosting the lithium battery voltage to 5V; A power indicator for indicating the power status; A detection circuit including a terminal block for connecting the solar panel, a load resistor, positive and negative pins for current-voltage detection, and a switch, and connecting the GND of the detection circuit to the general GND through a bead inductor to enhance circuit stability.

2. The intelligent photovoltaic cell performance testing device according to claim 1, wherein: The charging integrated circuit of the power management module is used in conjunction with the Type-C interface, capable of supplying power and charging the battery through the Type-C interface, and the MOS tube circuit realizes automatic power switching, disconnecting the battery power supply when the Type-C interface is plugged in and using the Type-C interface for power supply.

3. An intelligent photovoltaic cell performance testing device according to claim 1, characterized in that: The power management module is connected to the ADC interface of the main control chip through a large resistor voltage division circuit to monitor the battery power in real time.

4. An intelligent photovoltaic cell performance testing device according to claim 1, characterized in that: The main control chip reduces the 5V voltage to 3.3V through a buck converter and boosts the lithium battery voltage to 5V through a boost converter to meet the power requirements of different modules.

5. An intelligent photovoltaic cell performance testing device according to claim 1, characterized in that: The detection circuit is connected to the photovoltaic panel, load resistor, positive and negative pins for current-voltage detection, and switch through a terminal block, and connects the GND of the detection circuit to the general GND through a bead inductor to enhance circuit stability.

6. The intelligent photovoltaic cell performance testing device according to claim 1, characterized in that: The current-voltage detection unit includes a module integrating current detection and voltage detection functions to ensure accurate measurement of the current and voltage parameters of the photovoltaic cell.

7. The intelligent photovoltaic cell performance testing device according to claim 1, characterized in that: The data processing unit is responsible for formatting the collected current, voltage, angle, and GPS information into a string and packing it into a detection data packet for transmission to the data transmission unit.

8. An intelligent photovoltaic cell performance testing device according to claim 1, characterized in that: The data transmission unit is composed of chips supporting cellular network and Wi-Fi communication to ensure diverse data transmission methods and effectively transmit the processed data to the cloud platform.

9. The intelligent photovoltaic cell performance testing device according to claim 1, characterized in that: The mechanical structure unit controls the movement of the photovoltaic panel on the XYZ axes through two servos, achieving automatic adjustment of different illumination angles, so as to obtain more accurate performance data.

10. The intelligent photovoltaic cell performance testing device according to claim 1, wherein: The Internet of Things management system uses an open-source platform and is deployed through Docker technology to achieve real-time data display and remote control functions. Data transmission is completed through a chip that supports the MQTT protocol. This chip is connected to the serial port of the development board and receives AT commands to achieve network connection and data transparent transmission.

Images