Control system for deployment and retraction of photovoltaic panel, and control method therefor

Abstract

The present application relates to the technical field of photovoltaic power generation of new energy vehicles, and discloses a control system for deployment and retraction of a photovoltaic panel, and a control method therefor. The control system for deployment and retraction of a photovoltaic panel comprises a controller, a power supply module, an actuator, and a T-BOX module. The power supply module is electrically connected between an external power source and the controller, and is used for supplying power to the control system for deployment and retraction of a photovoltaic panel. A CAN transceiver is integrated inside the controller. The actuator comprises a drive motor electrically connected to the controller, and a drive motor monitoring circuit and a PV panel deployment and retraction mechanism both electrically connected to the drive motor. The control system for deployment and retraction of a photovoltaic panel triggers a deployment action by means of a vehicle CAN signal, and realizes intelligent control on the basis of multi-sensor fusion, thereby solving the problems of insufficient intelligence, lack of user interaction, and low energy efficiency in the prior art, and significantly improving the safety, charging efficiency, and user experience of the system.

Description

A control system and control method for the expansion and contraction of photovoltaic panels. Technical Field

[0001] This application relates to the field of photovoltaic power generation technology for new energy vehicles, specifically to a control system and control method for the expansion and contraction of photovoltaic panels. Background Technology

[0002] With the rapid development of the new energy vehicle industry and the increasing awareness of environmental protection and energy conservation among consumers, photovoltaic panels have broad application prospects in the field of new energy vehicles. Cars can install photovoltaic panels on the roof, body, and other locations to capture sunlight and convert it into electricity, thereby charging the car's battery pack and extending its driving range. When the photovoltaic panels are in the unfolded state, they can maximize sunlight capture and improve power generation efficiency. When not in use, the photovoltaic panels can be retracted or folded to reduce wind resistance, protect the panels, or adapt to different parking environments.

[0003] Existing new energy vehicles are equipped with intelligent photovoltaic panel control systems that automatically adjust the deployment angle and position of photovoltaic panels based on factors such as sunlight intensity, vehicle driving status, and battery charge to achieve optimal power generation efficiency. However, existing photovoltaic panel control systems are mostly focused on single scenarios (such as wind-triggered retraction or rail-synchronized deployment and retraction), lack vehicle integration design, and have a low level of intelligence, still facing some technical challenges in improving charging efficiency and safety. Summary of the Invention

[0004] The purpose of this invention is to provide a control system for the unfolding and retraction of photovoltaic panels, in order to solve the problems that existing control systems for the unfolding and retraction of photovoltaic panels cannot dynamically adjust the unfolded area according to the vehicle status, have insufficient control intelligence, and lack safety and user interaction.

[0005] To achieve the above objectives, the first aspect of the present invention provides a control system for the deployment and retraction of a photovoltaic panel. The control system includes a controller, a power module, an actuator, and a T-BOX module. The power module is electrically connected between an external power source and the controller to supply power to the photovoltaic panel deployment and retraction control system. The controller integrates a CAN transceiver. The actuator includes a drive motor electrically connected to the controller, a drive motor monitoring circuit electrically connected to the drive motor, and a PV panel telescopic mechanism. The PV panel telescopic mechanism includes a slide rail assembly, a linkage telescopic rod, and a limit assembly. The slide rail assembly is symmetrically distributed along the top of the vehicle and has a guide groove inside. The linkage telescopic rod is connected to the drive motor via a gear set and includes a main rod and a nested secondary rod. The limit assembly includes an electromagnetic lock and a contact micro switch. The controller is configured to, upon receiving a stop power-off signal from the CAN transceiver, control the drive motor to drive the PV panel telescopic mechanism to fully deploy the PV panel, allowing the PV panel to be fully exposed to sunlight.

[0006] In this embodiment of the invention, the control system for the unfolding and retraction of the photovoltaic panel further includes a sensor module, which includes one or more of a gesture sensor, a position sensor, a Hall sensor, and a light sensor.

[0007] In this embodiment of the invention, during the process of the PV panel telescopic mechanism unfolding the PV panel, the controller is also configured to: receive instructions from the T-BOX module or gesture sensor, and control the drive motor to drive the PV panel telescopic mechanism to stop extending or retracting the PV panel.

[0008] In this embodiment of the invention, when the PV panel encounters an obstacle, the controller is further configured to: receive current fluctuations monitored by the drive motor monitoring circuit, and control the drive motor to stop the PV panel extension mechanism from extending the PV panel.

[0009] In this embodiment of the invention, when the vehicle's SOC is greater than a first threshold, the controller is further configured to: control the drive motor to drive the PV panel telescopic mechanism to retract part of the PV panel, while retaining a single PV panel to be deployed.

[0010] In this embodiment of the invention, when the light sensor receives a light signal indicating that the light intensity has weakened, the controller is further configured to: compare the light sensor receives a light signal with a preset value to determine whether the sunlight on the PV panel is blocked; if it is blocked, control the T-BOX module to send a prompt message suggesting a change of charging location.

[0011] In this embodiment of the invention, the controller is further configured to: use a Hall sensor to detect the pulse frequency of the output current of the PV panel and calculate the daily power generation of the PV panel.

[0012] In this embodiment of the invention, when the CAN transceiver receives the door opening power-on signal, the controller is further configured to: control the drive motor to drive the PV panel telescopic mechanism to retract all PV panels back to the safe driving position of the PV panels according to the user operation and the unfolded state of the PV panels.

[0013] The second aspect of this invention provides a control method for the aforementioned photovoltaic panel deployment and retraction control system, comprising the following steps: upon receiving a parking power-off signal from the CAN transceiver, starting the drive motor to control the deployment of multiple PV panels; during the deployment process, monitoring the current of the drive motor in real time; if the current fluctuation of the drive motor exceeds a preset range, determining it as mechanical jamming, controlling the drive motor to stop, and recording the fault location; upon receiving a pause gesture signal or pause command, controlling the PV panel deployment action to interrupt; when the vehicle's SOC is greater than a first threshold, controlling the drive motor to retract part of the PV panels, retaining charging for a single PV panel; comparing the received illumination signal with a preset value to determine whether the sunlight on the PV panels is blocked; if blocked, controlling the T-BOX module to send a prompt message suggesting a change of charging location; calculating the daily power generation of the PV panels by detecting the pulse frequency of the PV panel output current; and upon receiving a door-opening power-on signal from the CAN transceiver, controlling the drive motor to retract all PV panels back to the safe driving position of the PV panels according to the current PV panel deployment status and user operation.

[0014] In this embodiment of the invention, retaining a single PV panel for charging includes the following steps: when retracting the PV panel, the PV panel is selected by the angle between the detected sunlight and the normal to the surface of the PV panel, and the PV panel with the smallest angle is retained first; at preset intervals, the retained PV panel is replaced to balance the loss of the PV panel.

[0015] The photovoltaic panel deployment and retraction control system provided by this invention, through the above technical solution, includes a controller, an actuator, and a T-BOX module. The controller integrates a CAN transceiver, triggers the deployment action via the vehicle's CAN signal, and achieves intelligent control based on multi-sensor fusion. This invention solves the core problems of vehicle-mounted photovoltaic systems in dynamic control, safety protection, energy management, and user interaction, significantly improving the system's practicality and market competitiveness.

[0016] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention.

[0018] In the attached diagram:

[0019] Figure 1 is a system architecture diagram of the photovoltaic panel expansion and contraction control system provided in an embodiment of the present invention;

[0020] Figure 2 is a control logic diagram of the photovoltaic panel expansion and contraction control system provided in an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of the PV panel telescopic mechanism provided in an embodiment of the present invention;

[0022] Figure 4 is a flowchart illustrating the control method for a photovoltaic panel deployment and retraction control system provided in an embodiment of the present invention; and

[0023] Figure 5 is a schematic diagram of the process of retaining a single PV panel for charging according to an embodiment of the present invention.

[0024] Figure Label Explanation: 10 Controller; 11 CAN Transceiver; 12 Bluetooth Chip; 20 Power Module; 21 Vehicle Power Supply; 30 Sensor Module; 31 Gesture Sensor; 32 Position Sensor; 33 Hall Sensor; 34 Light Sensor; 40 Actuator; 41 Drive Motor; 42 Drive Motor Monitoring Circuit; 43 PV Panel Telescopic Mechanism; 50 T-BOX Module; 60 Slide Rail Assembly; 61 Guide Groove; 70 Linkage Telescopic Rod; 71 Main Rod; 72 Nested Sub-rod; 80 Gear Set; 90 Limit Assembly; 91 Electromagnetic Lock; 92 Contact Micro Switch. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustrating and explaining the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0026] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0028] Please refer to Figures 1 and 2. The photovoltaic panel expansion and contraction control system provided in this embodiment of the invention may include a controller 10, a power module 20, an actuator 40, and a T-BOX module 50. The power module 20 is electrically connected between an external power source and the controller 10 to supply power to the photovoltaic panel expansion and contraction control system. The controller 10 integrates a CAN transceiver 11 and a Bluetooth chip 12. The actuator 40 includes a drive motor 41 electrically connected to the controller 10, a drive motor 41 monitoring circuit 42 electrically connected to the drive motor 41, and a PV panel telescopic mechanism 43.

[0029] As an example, the controller 10 of this invention can use the AT32F403AVG T7 chip, which can integrate a CAN transceiver 11 (e.g., model TJA1044GT / 3) and a Bluetooth chip 12 (e.g., model TICC2642R) internally, receiving the parking power-off signal via the CAN bus. The T-BOX module 50, for example, uploads power generation data to the cloud via a 5G network, supporting real-time communication and remote control. The power module 20 (e.g., model BD450M5FP-CE2) has a dual power supply circuit, connected to the vehicle power supply 21 and the PV board respectively, supporting automatic switching.

[0030] As shown in Figure 3, the PV panel telescopic mechanism 43 includes a slide rail assembly 60, a linkage telescopic rod 70, and a limiting assembly 90. The slide rail assembly 60 is symmetrically distributed along the top of the vehicle, and a guide groove 61 is provided inside the slide rail assembly 60. The linkage telescopic rod 70 is connected to the drive motor 41 through a gear set 80. The linkage telescopic rod 70 includes a main rod 71 and a nested secondary rod 72. The limiting assembly 90 includes an electromagnetic lock 91 and a contact micro switch 92.

[0031] For example, drive motor 41 (e.g., model TB9102FNG) drives telescopic rod 70 via gear set 80 (e.g., module 2, reduction ratio 5:1), with a maximum torque of 0.5 N·m. The main rod 71 and auxiliary rod are nested together, with a stroke of 500 mm, supporting two-stage telescopic movement. Electromagnetic lock 91 (using 12V DC) is energized and locked when the PV panel is fully extended, and contact microswitch 92 triggers power-off protection.

[0032] Preferably, the controller 10 provided in this embodiment of the invention is configured to control the drive motor 41 to drive the PV panel extension mechanism 43 to fully unfold the PV panel when it receives a stop power-off signal from the CAN transceiver 11, so that the PV panel is fully exposed to sunlight.

[0033] Preferably, the sensor module 30 may include a gesture sensor 31, a position sensor 32, a Hall sensor 33, and a light sensor 34. The gesture sensor 31 (e.g., model VL53L1X) is mounted on the front of the roof to detect horizontal / vertical hand gestures, with a response time ≤0.1 seconds. The light sensor 34 (e.g., model TSL2561) is mounted on the surface of the PV panel to collect real-time light intensity data. Combined with a GPS module (e.g., model ublox NEO-M8N) to obtain the local time, it dynamically adjusts the light threshold (e.g., 800W / m² in summer). 2 640W / m in winter 2 The Hall sensor 33 (e.g., model ACS712) is integrated into the PV board output circuit to count power generation with an accuracy of ±1.5%.

[0034] In this embodiment of the invention, during the process of the PV panel extension mechanism 43 unfolding the PV panel, the controller 10 is also configured to: receive instructions from the T-BOX module 50 or the gesture sensor 31, and control the drive motor 41 to drive the PV panel extension mechanism 43 to stop extending or retracting the PV panel.

[0035] In this embodiment of the invention, when the PV panel encounters an obstacle, the controller 10 can also be configured to: receive the current fluctuations monitored by the drive motor monitoring circuit 42, and control the drive motor 41 to stop the PV panel extension mechanism 43 from extending the PV panel.

[0036] In this embodiment of the invention, when the vehicle's SOC is greater than the first threshold, the controller 10 can also be configured to: control the drive motor 41 to drive the PV panel telescopic mechanism 43 to retract part of the PV panel, while retaining a single PV panel to unfold.

[0037] In this embodiment of the invention, when the light sensor 34 receives a light signal indicating that the light intensity has weakened, the controller 10 is further configured to: compare the light signal received by the light sensor 34 with a preset value to determine whether the sunlight on the PV panel is blocked; if it is blocked, control the T-BOX module 50 to send a prompt message suggesting a change of charging location.

[0038] In this embodiment of the invention, the controller can also be configured to: use Hall sensor 33 to detect the pulse frequency of the output current of the PV panel and calculate the daily power generation of the PV panel.

[0039] As an example, the Hall sensor 33 calculates the daily power generation of the PV panel by detecting the pulse frequency of the output current of the PV panel, which can be expressed by the following formula: E=k·∑(f i ·t i )

[0040] Where E is the daily power generation, k is the conversion coefficient, f is the pulse frequency, t is the time interval, and i is the current.

[0041] In this embodiment of the invention, when the CAN transceiver 11 receives the door opening power-on signal, the controller 10 can also be configured to control the drive motor 41 to drive the PV panel telescopic mechanism 43 to retract all PV panels back to the driving safety position of the PV panels according to the user operation and the unfolded state of the PV panels.

[0042] Figure 4 is a flowchart illustrating the control method for a photovoltaic panel unfolding and retracting control system provided in an embodiment of the present invention. The control method of the control system may include the following steps:

[0043] Step S100: When the stop power-off signal is received from the CAN transceiver 11, start the drive motor 41 and control the unfolding of multiple PV panels. During the unfolding process, monitor the current of the drive motor 41 in real time.

[0044] Step S200: If the current fluctuation of the drive motor 41 exceeds the preset range, it is determined to be mechanical jamming, the drive motor 41 is controlled to stop, and the fault location is recorded;

[0045] Step S300: If a pause gesture signal or pause command is received, the unfolding action of the PV panel is interrupted;

[0046] Step S400: When the vehicle's SOC is greater than the first threshold, control the drive motor 41 to retract part of the PV panel, retaining a single PV panel for charging.

[0047] Step S500: Compare the received light signal with the preset value to determine whether the sunlight on the PV panel is blocked. If it is blocked, control the T-BOX module 50 to send a prompt message suggesting a change of charging location.

[0048] Step S600: Calculate the daily power generation of the PV panel by detecting the pulse frequency of the output current of the PV panel;

[0049] Step S700: When the door opening power-on signal is received from the CAN transceiver 11, the drive motor 41 is controlled to retract all PV panels back to the safe driving position of the PV panels according to the current PV panel unfolding status and user operation.

[0050] For example, when a parking power-off signal is received from the CAN transceiver 11, the drive motor 41 is started to control the unfolding of multiple PV panels. During the unfolding process, the current of the drive motor 41 is monitored in real time. If the current fluctuation of the drive motor 41 exceeds a preset range (e.g., rated value ±5%), it is determined to be mechanical jamming, the drive motor 41 is stopped, and the fault location is recorded. If the gesture sensor 31 receives a gesture signal or the T-BOX module 50 receives a pause command from the mobile APP, the unfolding action of the PV panels is interrupted. When the vehicle's SOC is greater than 99%, the drive motor 41 is controlled to retract part of the PV panels, while retaining charging of a single PV panel. The light intensity is detected by the light sensor 34, and the preset light value is calculated by combining GPS positioning and local time. If the light intensity is continuously lower than the preset light value and exceeds the local sunset time by 30 minutes, it is determined to be light obstruction. The T-BOX module 50 is controlled to send a prompt message and suggest changing the charging location. The daily power generation of the PV panel is calculated by detecting the pulse frequency of the output current of the PV panel through the Hall sensor 33, and a charging efficiency report is generated and uploaded to the background. When the door opening power-on signal is received from the CAN transceiver 11, the drive motor 41 is controlled to drive all PV panels back to the driving safety position of the PV panels according to the current PV panel unfolding status and user operation.

[0051] Preferably, as shown in Figure 5, in this embodiment of the invention, retaining charging of a single PV panel includes the following steps:

[0052] Step S410: When retracting the PV panel, select the PV panel by measuring the angle between the detected sunlight and the normal to the PV panel surface, and retain the PV panel with the smallest angle first.

[0053] Step S420: Replace the PV panel that retains charging at preset intervals to balance the wear and tear on the PV panel.

[0054] For example, when retracting the PV panel, the light sensor 34 detects the angle between sunlight and the normal to the surface of the PV panel to select the PV panel, prioritizing the PV panel with the smallest angle to maximize the power generation efficiency of the PV panel; and the PV panel that is retained for charging is replaced every 1 hour to balance the loss of the PV panel.

[0055] As described above, the example PV panel deployment process may include: after the vehicle is turned off, the controller 10 receives a CAN stop signal and starts the drive motor 41 to deploy the PV panel; if the current fluctuation exceeds, for example, 5% (e.g., rated current 2A → fluctuation range 1.9-2.1A), it immediately stops and records a fault code; during the deployment process, if the gesture sensor 31 detects a horizontal hand gesture signal or, for example, a pause command sent by an APP configured on a mobile device, the deployment action is interrupted.

[0056] For example, the vehicle's single-board charging mode is as follows: when the vehicle's SOC > 99%, the PV board at a non-optimal angle is retracted, and one PV board facing the midday sun is retained; every hour, another PV board is activated in rotation, and the loss of each board is counted by Hall sensor 33.

[0057] In summary, the photovoltaic panel unfolding and retracting control system and the control method for the photovoltaic panel unfolding and retracting control system of the present invention have the following advantages:

[0058] 1. Multi-sensor collaborative control:

[0059] It integrates multimodal inputs such as gesture sensor 31, light sensor 34, and Hall sensor 33, and triggers the PV board action in conjunction with the vehicle CAN signal to achieve deep linkage with the vehicle status;

[0060] Obstacles are detected by the ripple motor current fluctuation, triggering an emergency stop and improving safety.

[0061] 2. Dynamic energy optimization strategy:

[0062] The system automatically retracts some PV panels based on the SOC threshold to balance charging efficiency and energy redundancy; it also determines the shading status by combining light intensity and time parameters and notifies the user via T-BOX to adjust the charging position to improve power generation efficiency.

[0063] 3. Intelligent user interaction:

[0064] It supports remote control via mobile app and gesture intervention, breaking the limitations of traditional manual operation;

[0065] The Hall sensor 33 counts the amount of electricity generated and uploads it to the backend to provide data support for route planning.

[0066] 4. Lightweight and safety design of mechanical structure:

[0067] A sliding rail linkage mechanism is adopted, combined with a limit component 90 to ensure that the PV panel retracts to a safe position when the vehicle is traveling, thus avoiding the risk of wind resistance.

[0068] Optimize the complexity of the drive mechanism to reduce maintenance costs.

[0069] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0070] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[0071] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0072] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0073] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0074] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0075] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0076] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0077] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A control system for the unfolding and retraction of a photovoltaic panel, characterized in that, The control system for the expansion and contraction of the photovoltaic panel includes a controller, a power module, an actuator, and a T-BOX module. The power module is electrically connected between the external power source and the controller, and is used to power the control system for the expansion and contraction of the photovoltaic panel. The controller integrates a CAN transceiver. The actuator includes a drive motor electrically connected to the controller, a drive motor monitoring circuit electrically connected to the drive motor, and a PV panel telescopic mechanism. The PV panel telescopic mechanism includes a slide rail assembly, a linkage telescopic rod, and a limiting assembly. The slide rail assembly is symmetrically distributed along the top of the vehicle and has a guide groove inside. The linkage telescopic rod is connected to the drive motor via a gear set and includes a main rod and a nested secondary rod. The limiting assembly includes an electromagnetic lock and a contact micro switch. The controller is configured to, upon receiving a power-off signal from the CAN transceiver, control the drive motor to drive the PV panel extension mechanism to fully extend the PV panel, allowing the PV panel to be fully exposed to sunlight.

2. The control system for the unfolding and retraction of photovoltaic panels according to claim 1, characterized in that, The control system for the expansion and contraction of the photovoltaic panel also includes a sensor module, which includes one or more of a gesture sensor, a position sensor, a Hall sensor, and a light sensor.

3. The control system for the unfolding and retraction of photovoltaic panels according to claim 2, characterized in that, During the process of the PV panel telescopic mechanism unfolding the PV panel, the controller is also configured to: Receive commands from the T-BOX module or the gesture sensor, and The drive motor is controlled to stop the PV panel extension mechanism from extending or retracting the PV panel.

4. The control system for the unfolding and retraction of photovoltaic panels according to claim 1, characterized in that, When the PV panel encounters an obstacle, the controller is also configured to: Receives current fluctuations detected by the drive motor monitoring circuit, and Control the drive motor to stop the PV panel extension mechanism from extending the PV panel.

5. The control system for the unfolding and retraction of photovoltaic panels according to claim 1, characterized in that, When the vehicle's State of Charge (SOC) exceeds a first threshold, the controller is also configured to: The drive motor is controlled to drive the PV panel telescopic mechanism to retract part of the PV panel, while retaining a single PV panel in place.

6. The control system for the unfolding and retraction of photovoltaic panels according to claim 2, characterized in that, When the light sensor receives a light signal indicating a decrease in light intensity, the controller is further configured to: The light signal received by the light sensor is compared with a preset value to determine whether the sunlight on the PV panel is blocked. If the screen is blocked, the T-BOX module will send a notification message.

7. The control system for the unfolding and retraction of photovoltaic panels according to claim 2, characterized in that, The controller is also configured to: use the Hall sensor to detect the pulse frequency of the output current of the PV panel and calculate the daily power generation of the PV panel.

8. The control system for the unfolding and retraction of photovoltaic panels according to claim 1, characterized in that, When the controller receives the power-on signal from the CAN transceiver, it is also configured to: Based on user operation and the unfolded state of the PV panels, the drive motor is controlled to drive the PV panel telescopic mechanism to retract all PV panels back to the safe driving position of the PV panels.

9. A control method for the expansion and contraction of a photovoltaic panel employing the control system described in any one of claims 1-8, characterized in that, Includes the following steps: When the CAN transceiver sends a stop power-off signal, the drive motor is started, and multiple PV panels are controlled to unfold. During the unfolding process, the current of the drive motor is monitored in real time. If the current fluctuation of the drive motor exceeds the preset range, it is determined to be a mechanical jam, the drive motor is controlled to stop, and the fault location is recorded; If a pause gesture signal or pause command is received, the unfolding action of the PV panel is interrupted. When the vehicle's SOC exceeds the first threshold, the drive motor is controlled to retract part of the PV panel, while retaining a single PV panel for charging. The received light signal is compared with a preset value to determine whether the sunlight on the PV panel is blocked. If it is blocked, the T-BOX module is controlled to send a prompt message suggesting a change of charging location. The daily power generation of the PV panel is calculated by detecting the pulse frequency of the output current of the PV panel. as well as When the door opening power-on signal is received from the CAN transceiver, the drive motor is controlled to retract all PV panels back to the safe driving position of the PV panels according to the current PV panel deployment status and user operation.

10. The control method for the photovoltaic panel unfolding and retracting control system according to claim 9, characterized in that, The retention of charging for a single PV panel includes: When retracting the PV panel, the PV panel is selected based on the angle between the detected sunlight and the normal to the PV panel surface, retaining the PV panel with the smallest angle first; and Replace the PV panels that are kept charging at preset intervals to balance the wear and tear on the PV panels.

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