System and method for controlling expansion and contraction of photovoltaic panel

Abstract

The invention discloses a photovoltaic panel expansion and contraction control system and a control method thereof, and relates to the technical field of new energy automobile photovoltaic power generation. The photovoltaic panel expansion and contraction control system comprises a controller, a power supply module, an execution mechanism and a T-BOX module, the power supply module is electrically connected between an external power supply and the controller and is used for supplying power to the photovoltaic panel expansion and contraction control system, a CAN transceiver is integrated in the controller, and the T-BOX module is electrically connected with the controller. The execution mechanism comprises a driving motor electrically connected with the controller, a driving motor monitoring circuit electrically connected with the driving motor, and a PV panel telescoping mechanism. According to the photovoltaic panel expansion and contraction control system, the expansion action is triggered through a vehicle CAN signal, intelligent control is achieved based on multi-sensor fusion, the problems of insufficient intelligence, lack of user interaction and low energy efficiency in the prior art are solved, and the safety, the charging efficiency and the user experience of the system are remarkably improved.

Description

Technical Field

[0001] This application relates to the technical field of photovoltaic power generation for new energy vehicles, and specifically relates to a control system and a control method for the unfolding and retracting of photovoltaic panels. Background Art

[0002] With the rapid development of the new energy vehicle industry and the continuous improvement of consumers' awareness of environmental protection and energy conservation, the application prospect of photovoltaic panels in the field of new energy vehicles is broad. Photovoltaic panels can be installed on the roof, body, etc. of a vehicle to capture sunlight and convert it into electrical energy, thereby charging the vehicle's battery pack and extending the cruising range. When the photovoltaic panels are in the unfolded state, they can maximize sunlight capture and improve power generation efficiency, while when not needed, the photovoltaic panels can be retracted or folded to reduce wind resistance, protect the photovoltaic panels, or adapt to different parking environments.

[0003] Existing new energy vehicles are equipped with intelligent photovoltaic panel control systems to automatically adjust the unfolding angle and position of the photovoltaic panels according to factors such as sunlight intensity, vehicle driving status, and battery power to achieve the best power generation efficiency. However, existing photovoltaic panel control systems mostly focus on single scenarios (such as wind-triggered retraction, synchronous unfolding and retraction on rails), lack vehicle integration design, and have a low degree of intelligence, and still face some technical challenges in improving charging efficiency and safety. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a control system for the unfolding and retracting of photovoltaic panels to solve the problems that the existing control system for the unfolding and retracting of photovoltaic panels cannot dynamically adjust the unfolding area according to the vehicle state, has insufficient control intelligence, and lacks safety and user interaction.

[0005] To achieve the above purpose, in the first aspect of the present invention, a control system for the unfolding and retracting of photovoltaic panels is provided. The control system for the unfolding and retracting of photovoltaic panels includes a controller, a power supply module, an actuator, and a T-BOX module. The power supply module is electrically connected between an external power supply and the controller for supplying power to the control system for the unfolding and retracting of photovoltaic panels. A CAN transceiver is integrated inside the controller. 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 component. The slide rail assemblies are symmetrically distributed along the vehicle roof. A guiding groove is provided inside the slide rail assembly. The linkage telescopic rod is connected to the drive motor through a gear set. The linkage telescopic rod includes a main rod and a nested sub-rod. The limit component includes an electromagnetic lock and a contact type microswitch. And the controller is configured to, when receiving a parking power-off signal sent by the CAN transceiver, control the drive motor to drive the PV panel telescopic mechanism to unfold all the PV panels so that the PV panels are fully irradiated by sunlight.

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

[0007] In an embodiment of the present invention, during the process of the PV panel telescopic mechanism unfolding the PV panel, the controller is further configured to: receive an instruction issued by the T-BOX module or the gesture sensor, and control the driving motor to drive the PV panel telescopic mechanism to stop extending or retracting the PV panel.

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

[0009] In an embodiment of the present invention, when the vehicle SOC is greater than the first threshold, the controller is further configured to: control the driving motor to drive the PV panel telescopic mechanism to retract a part of the PV panel, and retain a single PV panel unfolded.

[0010] In an embodiment of the present invention, when the light intensity signal received by the light sensor shows that the light intensity becomes weaker, the controller is further configured to: compare the light intensity signal received by the light sensor with a preset value to determine whether the sunlight of the PV panel is blocked. If it is blocked, control the T-BOX module to send a prompt message to suggest changing the charging location.

[0011] In an embodiment of the present invention, the controller is further 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.

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

[0013] The second aspect of the present invention provides a control method for the control system of the above-mentioned unfolding and retracting of photovoltaic panels, including the following steps: when receiving the power-off signal sent by the CAN transceiver, start the driving motor to control the unfolding of multiple PV panels, and during the unfolding process, monitor the current of the driving motor in real time; if the current fluctuation of the driving motor exceeds the preset range, it is determined as mechanical jamming, control the driving motor to stop, and record the fault location; if receiving a pause gesture signal or a pause instruction, control the unfolding action of the PV panels to interrupt; when the vehicle SOC is greater than the first threshold, control the driving motor to retract some PV panels and retain a single PV panel for charging; compare the received light signal with the preset value to determine whether the sunlight of the PV panel is blocked, if it is blocked, control the T-BOX module to send a prompt message to recommend changing the charging location; calculate the daily power generation of the PV panel by detecting the pulse frequency of the output current of the PV panel; and when receiving the power-on signal sent by the CAN transceiver, control the driving motor to drive all PV panels to retract to the driving safety position of the PV panels according to the current unfolding state of the PV panels and the user operation.

[0014] In the embodiment of the present invention, retaining a single PV panel for charging includes the following steps: when retracting the PV panels, select the PV panel by detecting the angle between the sunlight and the normal line of the PV panel surface, and preferentially retain the PV panel with the smallest angle; at intervals of a preset time, replace the PV panel for retaining charging to balance the loss of the PV panels.

[0015] Through the above technical solution, the control system for the unfolding and retracting of photovoltaic panels provided by the embodiment of the present invention includes a controller, an actuator and a T-BOX module. The controller integrates a CAN transceiver, triggers the unfolding action through the vehicle CAN signal, and realizes intelligent control based on multi-sensor fusion. The present invention solves the core problems of the in-vehicle photovoltaic system in dynamic control, safety protection, energy management and user interaction, and significantly improves the practicability and market competitiveness of the system.

[0016] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0017] The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification, and are used to explain the embodiments of the present invention together with the following specific implementation manners, but do not constitute a limitation to the embodiments of the present invention.

[0018] In the drawings:

[0019] Figure 1 is the system architecture diagram of the control system for the unfolding and retracting of photovoltaic panels provided by the embodiment of the present invention;

[0020] Figure 2It is the control logic diagram of the control system for the unfolding and retracting of the photovoltaic panel provided by the embodiment of the present invention;

[0021] Figure 3 It is the structural schematic diagram of the PV panel telescopic mechanism provided by the embodiment of the present invention;

[0022] Figure 4 It is the schematic flow chart of the control method of the control system for the unfolding and retracting of the photovoltaic panel provided by the embodiment of the present invention; and

[0023] Figure 5 It is the schematic flow chart of retaining the charging of a single PV panel provided by the embodiment of the present invention.

[0024] Description of the reference numerals

[0025] 10 Controller 11 CAN transceiver

[0026] 12 Bluetooth chip 20 Power supply module

[0027] 21 Vehicle power supply 30 Sensor module

[0028] 31 Gesture sensor 32 Position sensor

[0029] 33 Hall sensor 34 Light sensor

[0030] 40 Actuator 41 Driving motor

[0031] 42 Driving motor monitoring circuit 43 PV panel telescopic mechanism

[0032] 50 T-BOX module 60 Slide rail assembly

[0033] 61 Guide groove 70 Linkage telescopic rod

[0034] 71 Main rod 72 Nested sub-rod

[0035] 80 Gear set 90 Limit component

[0036] 91 Electromagnetic lock 92 Contact microswitch Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be understood that the specific implementation manners described herein are only for explaining and interpreting the embodiments of the present invention, and are not used to limit the embodiments of the present invention. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.

[0038] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] Please refer to Figure 1 and Figure 2 As shown in and, the control system for the unfolding and retracting of the photovoltaic panel provided by the embodiments of the present invention may include a controller 10, a power supply module 20, an actuator 40, and a T-BOX module 50. The power supply module 20 is electrically connected between an external power supply and the controller 10 and is used to supply power to the control system for the unfolding and retracting of the photovoltaic panel. The controller 10 internally integrates a CAN transceiver 11 and a Bluetooth chip 12. The actuator 40 includes a driving motor 41 electrically connected to the controller 10, and a driving motor 41 monitoring circuit 42 and a PV panel telescopic mechanism 43 both electrically connected to the driving motor 41.

[0041] By way of example, the controller 10 of the present invention may adopt an AT32F403AVG T7 chip, which can internally integrate a CAN transceiver 11 (for example, model TJA1044GT / 3) and a Bluetooth chip 12 (for example, model TICC2642R), and receive a power-off signal when the vehicle stops through the CAN bus. The T-BOX module 50 uploads power generation data to the cloud through a 5G network, for example, and supports real-time communication and remote control. The power supply module 20 (for example, model BD450M5FP-CE2), a dual-power supply circuit, is respectively connected to the vehicle power supply 21 and the PV panel, and supports automatic switching.

[0042] As shown in the attached Figure 3As shown, the PV panel telescopic mechanism 43 includes a slide rail assembly 60, a linkage telescopic rod 70, and a limit assembly 90. The slide rail assemblies 60 are symmetrically distributed along the vehicle top. A guiding groove 61 is provided inside the slide rail assembly 60. The linkage telescopic rod 70 is connected to the driving motor 41 through a gear set 80. The linkage telescopic rod 70 includes a main rod 71 and a nested sub-rod 72. The limit assembly 90 includes an electromagnetic lock 91 and a contact microswitch 92.

[0043] Illustratively, the driving motor 41 (e.g., model TB9102FNG) drives the linkage telescopic rod 70 through the 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 the sub-rod are designed with a nested structure, with a stroke of 500 mm and supporting two-stage telescoping. The electromagnetic lock 91 (using 12V DC) is energized and locked when the PV panel is fully deployed, and the contact microswitch 92 triggers power-off protection.

[0044] Preferably, the controller 10 provided in the embodiment of the present invention is configured to, when receiving the power-off signal during parking sent by the CAN transceiver 11, control the driving motor 41 to drive the PV panel telescopic mechanism 43 to deploy all the PV panels, so that the PV panels are fully irradiated by sunlight.

[0045] 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 installed at the front of the vehicle roof to detect horizontal / vertical waving actions, with a response time ≤ 0.1 second. The light sensor 34 (e.g., model TSL2561) is installed on the surface of the PV panel to collect the light intensity in real time. Combining with the GPS module (e.g., model ublox NEO-M8N) to obtain the local time, the light threshold is dynamically adjusted (e.g., 800 W / m 2 in summer, 640 W / m 2 in winter). The Hall sensor 33 (e.g., model ACS712) is integrated into the output circuit of the PV panel to count the power generation, with an accuracy of ±1.5%.

[0046] In the embodiment of the present invention, during the process of the PV panel telescopic mechanism 43 deploying the PV panels, the controller 10 is further configured to: receive the instructions sent by the T-BOX module 50 or the gesture sensor 31, and control the driving motor 41 to drive the PV panel telescopic mechanism 43 to stop extending or retracting the PV panels.

[0047] In the embodiment of the present invention, when the PV panel encounters an obstacle, the controller 10 may further be configured to: receive the current fluctuation monitored by the driving motor monitoring circuit 42, and control the driving motor 41 to stop the PV panel telescopic mechanism 43 from extending the PV panels.

[0048] In an embodiment of the present invention, when the vehicle SOC is greater than the first threshold, the controller 10 may further be configured to: control the drive motor 41 to drive the PV panel telescopic mechanism 43 to retract part of the PV panels, and retain a single PV panel in the deployed state.

[0049] In an embodiment of the present 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 of the PV panels is blocked. If it is blocked, control the T-BOX module 50 to send a prompt message to recommend changing the charging location.

[0050] In an embodiment of the present invention, the controller may further be configured to: use the Hall sensor 33 to detect the pulse frequency of the output current of the PV panels and calculate the daily power generation of the PV panels.

[0051] Illustrated by way of example, the Hall sensor 33 can calculate the daily power generation of the PV panels by detecting the pulse frequency of the output current of the PV panels, which can be expressed by the following formula:

[0052] E = k·∑(f i ·t i )

[0053] Wherein, 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.

[0054] In an embodiment of the present invention, when receiving the door opening and power-on signal of the CAN transceiver 11, the controller 10 may further be configured to control the drive motor 41 to drive the PV panel telescopic mechanism 43 to retract all the PV panels to the driving safety position of the PV panels according to the user operation and the deployed state of the PV panels.

[0055] Figure 4 is a schematic flowchart of the control method of the control system for the deployment and retraction of the photovoltaic panels provided by the embodiment of the present invention. The control method of the control system may include the following steps:

[0056] Step S100: When receiving the parking and power-off signal issued by the CAN transceiver 11, start the drive motor 41 to control the deployment of multiple PV panels. During the deployment process, the current of the drive motor 41 is monitored in real time;

[0057] Step S200: If the current fluctuation of the drive motor 41 exceeds the preset range, it is determined as mechanical jamming, control the drive motor 41 to stop, and record the fault location;

[0058] Step S300: If a pause gesture signal or a pause instruction is received, control the deployment action of the PV panels to be interrupted;

[0059] Step S400: When the vehicle's SOC is greater than the first threshold, control the drive motor 41 to retract some of the PV panels and retain a single PV panel for charging;

[0060] Step S500: Compare the received light signal with a preset value to determine whether the sunlight of the PV panel is blocked. If it is blocked, control the T-BOX module 50 to send a prompt message, suggesting to change the charging location;

[0061] Step S600: Calculate the daily power generation of the PV panel by detecting the pulse frequency of the output current of the PV panel;

[0062] Step S700: When receiving the door opening and power-on signal sent by the CAN transceiver 11, control the drive motor 41 to drive all the PV panels to retract to the driving safety position of the PV panels according to the current deployment state of the PV panels and the user operation.

[0063] Illustrated by way of example, when receiving the parking and power-off signal sent by the CAN transceiver 11, start the drive motor 41 to control the deployment of multiple PV panels. During the deployment process, the current of the drive motor 41 is monitored in real time; if the current fluctuation of the drive motor 41 exceeds the preset range (for example, the rated value ±5%), it is determined as mechanical jamming, control the drive motor 41 to stop, and record the fault location; if the gesture sensor 31 receives a gesture signal or the T-BOX module 50 receives a pause instruction from the mobile phone APP, control the deployment action of the PV panel to be interrupted; when the vehicle's SOC is greater than 99%, control the drive motor 41 to retract some of the PV panels and retain a single PV panel for charging; detect the light intensity through the light sensor 34, calculate the light preset value in combination with GPS positioning and local time. If the light intensity continuously is lower than the light preset value and exceeds 30 minutes of the local sunset time, it is determined as light blockage, control the T-BOX module 50 to send a prompt message, suggesting to change the charging location, detect the pulse frequency of the output current of the PV panel through the Hall sensor 33 to calculate the daily power generation of the PV panel, generate a charging efficiency report and upload it to the background; and when receiving the door opening and power-on signal sent by the CAN transceiver 11, control the drive motor 41 to drive all the PV panels to retract to the driving safety position of the PV panels according to the current deployment state of the PV panels and the user operation.

[0064] Preferably, as Figure 5 shown, in the embodiment of the present invention, retaining a single PV panel for charging includes the following steps:

[0065] Step S410: When retracting the PV panels, select the PV panels by detecting the angle between the sunlight and the normal of the PV panel surface, and first retain the PV panel with the smallest angle;

[0066] Step S420: Replace the retained PV panel for charging at preset intervals to balance the loss of the PV panels.

[0067] For example, when retracting the PV panels, the light sensor 34 is used to detect the angle between the sunlight and the normal of the PV panel surface to select the PV panels. The PV panel with the smallest angle is preferentially retained to maximize the power generation efficiency of the PV panels; and the PV panel for charging is replaced every 1 hour to balance the loss of the PV panels.

[0068] As mentioned above, the example PV panel deployment process may include: after the vehicle is turned off, the controller 10 receives the CAN parking signal and starts the drive motor 41 to deploy the PV panels; if the current fluctuation exceeds, for example, 5% (for example, the rated current is 2A → the fluctuation range is 1.9 - 2.1A), immediately stop and record the fault code; during the deployment process, when the gesture sensor 31 detects a horizontal wave signal or a pause instruction sent by, for example, an APP configured on a mobile device, the deployment action is interrupted.

[0069] For example, the single - panel charging mode of the vehicle is as follows: when the vehicle SOC > 99%, retract the PV panels at non - optimal angles and retain one PV panel facing the direction of the noon sun; rotate and activate another PV panel every 1 hour, and use the Hall sensor 33 to count the loss of each panel.

[0070] In summary, the control system for the deployment and retraction of the photovoltaic panels of the present invention and the control method for the control system for the deployment and retraction of the photovoltaic panels have the following advantages:

[0071] 1. Multi - sensor collaborative control:

[0072] Integrate multi - modal inputs such as the gesture sensor 31, the light sensor 34, and the Hall sensor 33, and trigger the PV panel action in combination with the vehicle CAN signal to achieve deep linkage with the vehicle state;

[0073] Detect obstacles through the ripple of the motor current and trigger an emergency stop to improve safety.

[0074] 2. Dynamic energy optimization strategy:

[0075] Automatically retract some PV panels according to the SOC threshold to balance the charging efficiency and energy redundancy; combine the light intensity and time parameters to judge the occlusion state, and notify the user to adjust the charging position through the T - BOX to improve the power generation efficiency.

[0076] 3. Intelligent user interaction:

[0077] Support remote control by mobile phone APP and gesture intervention, breaking the limitations of traditional manual operation;

[0078] Count the power generation amount through the Hall sensor 33 and upload it to the background to provide data support for path planning.

[0079] 4. Mechanical structure lightweight and safety design:

[0080] Adopt a slide rail linkage mechanism, combined with a limit component 90 to ensure that the PV panel retracts to a safe position during driving, avoiding the risk of wind resistance;

[0081] Optimize the complexity of the drive mechanism and reduce the maintenance cost.

[0082] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented 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.

[0083] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the processes and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0084] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0085] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Therefore, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0086] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and a memory.

[0087] The memory may include non-permanent memory in the form of computer-readable media, random access memory (RAM) and / or non-volatile memory such as read-only memory (ROM) or flash RAM. The memory is an example of computer-readable media.

[0088] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can store information by any method or technology. The information can be computer-readable instructions, data structures, program modules, 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, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0089] It should also be noted that the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but also other elements not expressly listed, or elements that are inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0090] The above are only embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A control system for expanding and contracting 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 an external power source and the controller, and is used to supply power to the control system for expanding and contracting the photovoltaic panel. The controller has an internal integrated 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 retracting 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. A guide groove is arranged inside the slide rail assembly. The linkage telescopic rod is connected to the drive motor through a gear set. The linkage telescopic rod includes a main rod and a nested auxiliary rod. The limit assembly includes an electromagnetic lock and a contact micro switch, and The controller is configured to control the drive motor to drive the PV panel retracting mechanism to unfold all PV panels when receiving a parking power-off signal sent by the CAN transceiver, so that the PV panels are fully exposed to sunlight.

2. The photovoltaic panel expansion and contraction control system according to claim 1, characterized in that: The control system for expanding and contracting 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.

3. The photovoltaic panel expansion and contraction control system according to claim 2, characterized in that: During the process of the PV panel retracting mechanism unfolding the PV panel, the controller is further configured to: receiving a command from the T-BOX module or the gesture sensor, and The driving motor is controlled to drive the PV panel retracting mechanism to stop extending or retract the PV panel.

4. The photovoltaic panel expansion and contraction control system according to claim 1, characterized in that: When the PV panel encounters an obstacle, the controller is further configured to: receiving current fluctuations monitored by the drive motor monitoring circuit, and The driving motor is controlled to stop the PV panel retracting mechanism from extending the PV panel.

5. The photovoltaic panel expansion and contraction control system according to claim 1, characterized in that: When the vehicle SOC is greater than a first threshold, the controller is further configured to: The driving motor is controlled to drive the PV panel retracting mechanism to retract a portion of the PV panels, leaving a single PV panel unfolded.

6. The photovoltaic panel expansion and contraction control system according to claim 2, characterized in that: When the light signal received by the light sensor shows that the light intensity becomes weaker, the controller is further configured to: Comparing the light signal received by the light sensor with a preset value to determine whether the sunlight of the PV panel is blocked; If blocked, the T-BOX module is controlled to send a prompt message.

7. The photovoltaic panel expansion and contraction control system according to claim 2, characterized in that: The controller is further 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 photovoltaic panel expansion and contraction control system according to claim 1, characterized in that: When receiving the door opening power-on signal of the CAN transceiver, the controller is further configured to: According to the user operation and the unfolded state of the PV panels, the driving motor is controlled to drive the PV panel retracting mechanism to retract all the PV panels to a safe driving position of the PV panels.

9. A control method for expanding and contracting a photovoltaic panel using a control system as claimed in any one of claims 1 to 8, characterized in that: The steps include: When receiving the parking power-off signal sent by the CAN transceiver, the drive motor is started to control the deployment of multiple PV panels, and during the deployment process, the current of the drive motor is monitored in real time; If the current fluctuation of the drive motor exceeds a preset range, it is determined to be a mechanical jam, the drive motor is controlled to stop, and the fault position is recorded; If a pause gesture signal or pause command is received, the deployment action of the PV panel is interrupted; When the vehicle SOC is greater than a first threshold, controlling the drive motor to retract a portion of the PV panels to keep a single PV panel charged; Compare the received light signal with the preset value to determine whether the sunlight of the PV panel is blocked. If blocked, control the T-BOX module to send a prompt message and suggest changing the charging location; Calculating the daily power generation of the PV panel by detecting the pulse frequency of the output current of the PV panel; as well as When a door opening power-on signal sent by the CAN transceiver is received, the drive motor is controlled to drive all PV panels to retract to a safe driving position of the PV panels according to the current unfolded state of the PV panels and user operation.

10. The control method of the control system for the expansion and contraction of photovoltaic panels according to claim 9, characterized in that: The method of retaining a single PV panel charging comprises: When retracting the PV panels, the PV panels are selected by the angle between the detected sunlight and the normal line of the PV panel surface, and the PV panels with the smallest angle are retained first; and At preset intervals, the PV panels that retain charge are replaced to balance the loss of the PV panels.

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