Car roof photovoltaic power generation device capable of automatically turning cover and control system thereof

Abstract

The utility model discloses a car roof photovoltaic power generation device capable of automatically turning over a cover and a control system of the car roof photovoltaic power generation device. The power generation device comprises a luggage rack base capable of being installed on the top of an automobile, a cover plate installed on the luggage rack base in a turnover mode, a first photovoltaic panel stored in the luggage rack base in a foldable mode, a second photovoltaic panel covering the outer side face of the cover plate and a telescopic driving mechanism used for driving the cover plate to be turned over to be opened or closed relative to the luggage rack base. The telescopic driving mechanism is installed on the luggage rack base, and the output end of the telescopic driving mechanism is connected with the cover plate. The system comprises a photovoltaic cell panel, an MPPT controller, a car roof battery pack, a driving motor, a camera, an inverter, a charging gun and an electricity taking change-over switch. The foldable photovoltaic cell panel is arranged on the roof rack, so that the roof rack has the functions of storage and power generation and also has the effects of shading and monitoring an automobile, and the problems of static power supply and taking, shading, monitoring and storage of an existing automobile are solved.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic power generation technology, in particular to an automatic flip-up vehicle roof photovoltaic power generation device and a control system thereof. Background Art

[0002] During the hot summer months, when a car is parked in the sun, the rapid and excessive temperature rise inside the car, leading to the aging of various components, has long been a problem for car owners. Currently available car sunshades use aluminum foil or fabric. These sunshades typically extend from the inside out to the front windshield, rarely providing full coverage of the rear windshield. They are also difficult to store, resulting in limited sun protection and limited functionality.

[0003] With the popularity of new energy vehicles, the improvement of people's living standards and the increase in travel needs, more and more people are choosing self-driving tours. However, existing new energy vehicles generally have the following problems when in use: First, battery life. Charging requires going to a designated charging station, which is too far, there are few charging stations, and queuing is inconvenient. Second, after the new energy vehicle is turned off, the seat adjustment function and window lifting function are usually no longer usable; when people are resting in the car, the entertainment function of the central control screen cannot be turned on. Third, the charging equipment is single, incomplete, poorly compatible, and has low power; high-power appliances such as household appliances cannot be used normally when the vehicle and people are outdoors. Fourth, when the vehicle is parked and turned off, it is impossible to continuously monitor the vehicle and its surrounding conditions without blind spots for 24 hours.

[0004] Roof racks are essential equipment for self-driving tours, increasing the vehicle's cargo space. However, existing roof racks only function as cargo carriers. Improving roof racks to incorporate not only storage functions but also power generation, energy storage, and sunshade functions is a pressing challenge for the industry. Utility Model Content

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide an automatically flip-up roof photovoltaic power generation device and its control system. By arranging foldable photovoltaic panels on the roof luggage rack, the roof luggage rack not only has storage and power generation functions, but also has the functions of shading and monitoring the car, thereby solving the problems of static power supply, shading, monitoring and storage in existing cars.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An automatically flip-up roof photovoltaic power generation device includes a luggage rack base that can be installed on the roof of a car, a cover plate that can be flipped and installed on the luggage rack base, a first photovoltaic panel that can be folded and stored in the luggage rack base, a second photovoltaic panel covering the outer side of the cover plate, and a telescopic drive mechanism for driving the cover plate to flip open or close relative to the luggage rack base. The telescopic drive mechanism is installed on the luggage rack base, and its output end is connected to the cover plate.

[0008] As a preferred solution: a plurality of cameras for monitoring the surrounding conditions of the vehicle body are arranged on the outside of the luggage rack base.

[0009] As a preferred solution: the telescopic drive mechanism includes a drive motor, a telescopic push rod and a motor controller, the motor controller is connected to the drive motor, one end of the telescopic push rod is connected to the shaft end of the drive motor, and the other end is hingedly connected to the cover plate.

[0010] As a preferred solution: one side of the cover plate is hinged to the luggage rack base through a hinge, and a locking device for locking the cover plate to the luggage rack base is provided between the other side and the luggage rack base.

[0011] As a preferred solution: the luggage rack base includes a base body and a connecting block arranged on the lower surface of the base body for connecting to the top of the car.

[0012] As a preferred solution: a recessed slot for accommodating the roof battery pack, the drive motor and the telescopic push rod is provided in the middle of the luggage rack base, a cover is provided above the slot, and the roof battery pack is located on both sides of the drive motor.

[0013] A control system applied to the rooftop photovoltaic power generation device includes a first photovoltaic panel, a second photovoltaic panel, an MPPT controller, a rooftop battery pack, a drive motor, a camera, an inverter, a charging gun, and a power supply switching switch; the first photovoltaic panel and the second photovoltaic panel constitute a photovoltaic cell panel, the MPPT controller is connected between the photovoltaic cell panel and the rooftop battery pack, the drive motor, camera, and inverter are respectively connected to the rooftop battery pack; the power supply switching switch is connected between the rooftop battery pack, the vehicle battery, and the vehicle interior system load.

[0014] As a preferred solution: it also includes a charging management module, a starting control module for on-board electronic equipment when the vehicle stops, an EV charging communication and control module, and a DC / DC module. The photovoltaic panel is connected to the EV charging communication and control module through an MPPT controller and a micro-inverter; at the same time, the photovoltaic panel is also connected to the roof battery pack through the MPPT controller, the roof battery pack is connected to the DC / DC module, the camera and the charging management module are respectively connected to the DC / DC module, and the starting control module for on-board electronic equipment when the vehicle stops is connected to the charging management module.

[0015] As a preferred solution: it also includes an MCU, an EV charging communication module, a start-up control module for on-board electronic equipment when the vehicle stops, and a DC / DC module. The photovoltaic panel is connected to the roof battery pack through an MPPT controller and a micro-inverter; the DC / DC module is connected to the roof battery pack, the EV charging communication module is connected to the DC / DC module, and the camera, the start-up control module for on-board electronic equipment when the vehicle stops, and the DC / DC module are respectively connected to the MCU.

[0016] As a preferred solution: the output voltage of the DC / DC module is 800V, 12V or 5V.

[0017] Compared with the prior art, the present invention has significant advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it relates to an automatically retractable rooftop photovoltaic power generation device and its control system, and more particularly, to a rooftop luggage rack with an external photovoltaic panel and a rooftop battery pack, and an automatically retractable rooftop luggage rack. The device is equipped with an electrical control power supply system after the vehicle is turned off, capable of bypassing power to the vehicle's air conditioner, windows, seats, etc. The first and second photovoltaic panels are foldable photovoltaic panels made of waterproof, sewn fabric with an IP55 protection rating. The sewn fabric can prevent glass scratches. Unfolding the photovoltaic panels increases charging power and provides sunshade for the vehicle. The second photovoltaic panel exposed on the top of the luggage rack and the foldable, sewn first photovoltaic panel stored inside are connected in parallel. When all photovoltaic panels are unfolded, their maximum power can reach over 1000W. While not affecting photovoltaic power generation efficiency, the photovoltaic panels can also be used for a long time without damaging the vehicle paint. They can be folded and used an unlimited number of times without breaking, are easy to clean, and are highly wear-resistant.

[0018] When connected to a DC / AC or DC / DC inverter, the photovoltaic panels charge the rooftop battery pack and the vehicle battery, providing electricity for camping and daily life. The inverter / DC / DC output can also be connected to a charging cable for emergency charging of electric vehicles. Furthermore, they address the power needs of vehicle monitoring after the vehicle is turned off, as well as the central control screen, seats, windows, air conditioning, and other systems, meeting various user needs while preventing excessive temperature rise inside the vehicle. The integrated MPPT controller and rooftop battery pack within the luggage rack also power the camera at the base of the luggage rack, activating the sentry function.

[0019] This power generation device features a retractable, foldable photovoltaic panel and battery. When unfolded, it provides shade and converts solar energy into stored electricity to power the vehicle's electrical devices, meeting the need for static power after the vehicle is turned off. A second photovoltaic panel on top of the luggage rack, with a power output exceeding 200W, can charge the rack's internal battery while the vehicle is moving or stopped, and the stored energy can be used to provide emergency charging for the main battery at any time.

[0020] The control system has the following features:

[0021] (1) This system is an integrated solution for a rooftop photovoltaic power generation system that integrates sunshade, power generation, power storage, conversion, and storage;

[0022] (2) This system also has the function of providing power to the electronic sentry for monitoring and the central control, seats, and window lifting after the vehicle is turned off;

[0023] (3) An automatic flip-up device is provided. Before the car is driven, the photovoltaic panels at the bottom are manually folded and stored in the luggage rack and the upper cover is closed to reduce the occupied space.

[0024] (4) The first photovoltaic panel is folded and placed in the base of the luggage rack; the first photovoltaic panel is unfolded by opening the cover, and the increased power can meet the emergency charging needs of the electric vehicle.

[0025] (5) The practicality and functionality of the roof rack are improved, providing a more convenient and comfortable travel experience for self-driving enthusiasts.

[0026] (6) The photovoltaic panels fixed on the base of the luggage rack can charge the battery pack on the luggage rack for a long time, solving the battery life anxiety of users when using electronic devices in the car after the new energy vehicle is turned off.

[0027] In order to more clearly illustrate the structural features and effects of the present invention, it is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional schematic diagram of the power generation device of the present invention in a closed state of the cover;

[0029] Figure 2 This is a three-dimensional schematic diagram of the power generation device of the present invention with the cover plate opened;

[0030] Figure 3 This is a three-dimensional schematic diagram of the first photovoltaic panel of the present invention in the unfolded state;

[0031] Figure 4 This is a three-dimensional schematic diagram of the working state of the first photovoltaic panel and the second photovoltaic panel of the present invention;

[0032] Figure 5 This is a three-dimensional schematic diagram of the power generation device of the present invention in working condition on the top of a car;

[0033] Figure 6 This is a three-dimensional schematic diagram of the internal structure of the power generation device of the present invention;

[0034] Figure 7 This is a schematic diagram of the telescopic drive mechanism of the present invention driving the cover to open;

[0035] Figure 8 This is a schematic diagram of the telescopic drive mechanism of the present invention driving the cover to close;

[0036] Figure 9 This is a schematic diagram of the electrical wiring of the control system of the present utility model;

[0037] Figure 10 This is a schematic diagram of the principle of the control system scheme 1 of the present utility model;

[0038] Figure 11 This is a schematic diagram of the principle of the second control system scheme of the present utility model;

[0039] Figure 12 This is a schematic diagram of the electrical principle of the startup control module of the on-board electronic equipment when the vehicle is stopped according to the present invention;

[0040] Figure 13 This is a schematic diagram of the low-power electrical principle of the system of this utility model.

[0041] Description of the accompanying drawings:

[0042] 10. Luggage rack base; 11. Base; 12. Connecting block; 13. Receiving groove; 14. Cover; 20. Cover plate; 21. Hinge; 22. Locking device; 30. First photovoltaic panel; 40. Second photovoltaic panel; 50. Telescopic drive mechanism; 51. Drive motor; 52. Telescopic push rod; 53. Motor controller; 54. Output line; 60. Camera; 70. Roof battery pack; 80. Automobile. DETAILED DESCRIPTION

[0043] The utility model Figures 1 to 13 As shown, an automatic flip-up roof photovoltaic power generation device and its control system, wherein:

[0044] The power generation device includes a luggage rack base 10 that can be installed on the top of the car 80, a cover 20 that can be flipped and installed on the luggage rack base 10, a first photovoltaic panel 30 that can be folded and stored in the luggage rack base 10, a second photovoltaic panel 40 covering the outer side of the cover 20, and a telescopic drive mechanism 50 for driving the cover 20 to flip open or close relative to the luggage rack base 10. The telescopic drive mechanism 50 is installed on the luggage rack base 10, and its output end is connected to the cover 20.

[0045] The luggage rack base 10 and the cover plate 20 are made of plastic, metal plate or a combination of plastic and metal. When in use, the luggage rack base 10 is fixed to the top of the car 80, the cover plate 20 is located on the top of the luggage rack base 10, and the telescopic drive mechanism 50 is extended and located between the luggage rack base 10 and the cover plate 20. The first photovoltaic panel 30 folded and stored inside the luggage rack base 10 is unfolded and laid on the surface of the car body 80. The unfolded first photovoltaic panel 30 and the second photovoltaic panel 40 outside the cover plate 20 can double the charging power, and can be used in conjunction with an inverter to provide emergency charging for the car 80. At the same time, it can also block sunlight for the car 80 to avoid exposure to the sun and reduce the temperature inside the car.

[0046] Multiple cameras 60 are installed on the outside of the luggage rack base 10 to monitor the surrounding conditions of the vehicle. These cameras provide 24-hour, 360-degree panoramic monitoring of the vehicle's surroundings even after the vehicle 80 is turned off, functioning as an electronic sentry (sentry module). When the vehicle is stopped, if the vehicle vibrates, the camera automatically starts recording, sends information to a pre-installed device, and issues an alarm. If an object moves around the vehicle while it is stopped, the camera automatically starts recording, sends information to a pre-installed device, and issues an alarm.

[0047] The telescopic drive mechanism 50 includes a drive motor 51, a telescopic push rod 52, and a motor controller 53. The motor controller 53 is connected to the drive motor 51. The telescopic push rod 52 is connected to the shaft of the drive motor 51 at one end and hingedly connected to the cover 20 at the other end. The drive motor 51 is connected to the cover 20 via the telescopic push rod 52. The drive motor 51 drives the telescopic push rod 52 to open and close the cover 20 relative to the luggage rack base 10. The cover 20 can be opened and closed manually or automatically. Even in the event of automatic failure or other special circumstances, the cover 20 can be opened and closed normally, ensuring safe and reliable operation while driving and minimizing the risk of loss of personnel and property.

[0048] One side of the cover plate 20 is hingedly connected to the luggage rack base 10 via a hinge 21. A locking device 22 is provided between the other side of the cover plate 20 and the luggage rack base 10 to secure the cover plate 20 to the luggage rack base 10. The locking device 22 is a conventional lock for box-shaped structures currently available on the market and will not be described in detail here. The luggage rack base 10 includes a base 11 and a connecting block 12 disposed on the lower surface of the base 11 for connecting to the roof of the vehicle 80.

[0049] A space is formed between the luggage rack base 10 and the cover plate 20 to accommodate the first photovoltaic panel 30 and storage items. At the same time, a recessed groove 13 is provided in the middle of the luggage rack base 10 to accommodate the roof battery pack 70, the drive motor 51 and the telescopic push rod 52. A cover 14 is provided above the groove 13, and the roof battery pack 70 is located on both sides of the drive motor 51.

[0050] The working principle and operation method of the power generation device are as follows: when in use, the drive motor 51 drives the telescopic push rod 52 to drive the cover 20 to open, and then the first photovoltaic panel 30 is spread flat on the surface of the car 80; after the drive motor 51 drives the telescopic push rod 52 to drive the cover 20 to close, the first photovoltaic panel 30 and the second photovoltaic panel 40 are completely exposed to sunlight, and the solar energy is converted into electrical energy and stored in the roof battery pack 70 or the output end of the photovoltaic panel is connected to the input end of the inverter / DC / DC charger, and output to the electric car 80 for emergency charging through the inverter / DC / DC charger.

[0051] When the car 80 is about to drive, the driving motor 51 drives the telescopic push rod 52 to open the cover 20, and then folds the first photovoltaic panel 30 into the luggage rack base 10, and the driving motor 51 drives the telescopic push rod 52 to close the cover 20.

[0052] The control system is applied to the roof photovoltaic power generation device, which includes a first photovoltaic panel 30, a second photovoltaic panel 40, an MPPT controller, a roof battery pack 70, a drive motor 51, a camera 60, an inverter, a charging gun and a power supply switching switch; the first photovoltaic panel 30 and the second photovoltaic panel 40 constitute a photovoltaic cell panel, the MPPT controller is connected between the photovoltaic cell panel and the roof battery pack 70, the drive motor 51, the camera 60 and the inverter are respectively connected to the roof battery pack 70; the power supply switching switch is connected between the roof battery pack 70, the car 80 battery and the car 80 interior system load (central control screen power supply, seats, glass lifting).

[0053] The MPPT controller continuously charges the roof battery pack 70 with electricity generated by the photovoltaic panels while ensuring safety and reliability. It provides protection and shuts off the input when the photovoltaic panel output voltage exceeds or falls below the rated voltage; it provides protection and shuts off the input when the photovoltaic panel output current exceeds or falls below the rated current; it provides protection and shuts off the input when the photovoltaic panel is struck by lightning; it automatically shuts off the input and stops charging when the roof battery pack 70 is fully charged; it shuts off the input and stops charging when the charging current exceeds the rated current; it shuts off the input and stops charging when the roof battery pack 70 voltage exceeds or falls below the rated value; and it shuts off the input and stops charging when the roof battery pack 70 temperature exceeds the rated temperature.

[0054] The control system operates as follows: Photovoltaic panels act as renewable energy collectors, converting solar energy into electricity, providing clean power for the system. Using an MPPT controller, the system extracts maximum power from the photovoltaic panels, optimizing energy efficiency. The vehicle's battery 80 acts as an energy storage unit, storing power from the photovoltaic panels or from an external power source via a charging plug. A power switch allows the system to flexibly switch between the vehicle's battery 80 and the roof battery pack 70, ensuring a stable power supply for the vehicle's central control screen, seats, and window lifts in all conditions. Specifically, when the vehicle is turned off, power automatically switches to the roof battery pack 70, and when the vehicle is started, it automatically switches back to the vehicle's battery 80. The inverter / DC / DC module converts the DC power from the roof battery pack 70 into the AC power or various DC voltages required by household appliances and onboard devices. The roof battery pack 70 also powers the camera 60 and drive motor 51, enabling the Sentinel module and the cover 20 to open and close.

[0055] The output end of the roof battery pack 70 can be connected to:

[0056] DC / DC boost module: used to quickly charge the new energy electric vehicle 80 with the electricity generated by the photovoltaic panel, thereby playing the role of energy replenishment for the new energy electric vehicle 80.

[0057] EV charging communication module: used for the entire process of identification, communication and charging monitoring of new energy electric vehicles 80.

[0058] Automobile 80 auxiliary power charging module: charges the auxiliary power battery on fuel vehicles and new energy electric vehicles 80.

[0059] USB / T-ype module: can charge and power digital products such as mobile phones and tablets.

[0060] DC / AC module: can provide power supply and charging for all electrical appliances with corresponding voltage and within the rated power range.

[0061] Sentry module: When the vehicle stops, if there is any vibration, it will automatically start and record the video and send information to the pre-equipment and issue an alarm. When there is any movement around the vehicle, it will automatically start and record the video and send information to the pre-equipment and issue an alarm.

[0062] Flip-top module: When the vehicle stops, open the cover 20 to take out the folded first photovoltaic panel 30 and unfold it to generate photovoltaic power. Before the vehicle moves, fold the first photovoltaic panel 30 into the luggage rack base 10 and close the cover 20.

[0063] The control system can be implemented in two ways:

[0064] The plan is as attached Figure 10 As shown, the PV module (photovoltaic panel) is connected to the EV charging communication and control module through an MPPT controller and microinverter. The EV charging communication and control module (optionally using the SIMCom SIM8500 or Quectel EC200S module, depending on actual needs) is used to identify, communicate, and monitor the entire charging process of the new energy electric vehicle 80. The PV module (photovoltaic panel) is also connected to the roof battery pack 70 through another MPPT controller. The DC / DC module is responsible for converting the direct current from the roof battery pack 70 to the different voltages required by the onboard electronic equipment.

[0065] At the same time, the USB / Type-C / 12V charging management module provides standard power for electronic devices. When the vehicle is stopped, the start control module of the on-board electronic equipment is mainly responsible for managing and coordinating the electronic systems inside the vehicle to ensure the safety, comfort and performance of the vehicle, such as lighting, windows, door locks and seat control. When the vehicle is stopped, the start control module manages these functions by receiving sensor data and executing control instructions. For example, when the vehicle is stopped, unnecessary electronic devices can be turned off to save energy, and ensure that these devices can be quickly started when needed to restore normal operation of the vehicle. When the vehicle is stopped, the start control module of the on-board electronic equipment ensures that the vehicle remains safe and efficient when stopped by processing and coordinating different subsystems in real time, and quickly responds to start related functions when needed.

[0066] The Sentry module monitors the vehicle status when parked, ensuring vehicle safety and preventing illegal intrusion or abnormal situations, forming a closed-loop energy management system aimed at improving the energy efficiency of electric vehicles by 80% and providing a safe and reliable power supply.

[0067] Option 2 is as attached Figure 11As shown: The MCU (microcontroller unit) monitors and controls the vehicle's charging process, power distribution to onboard electronics, and the operation of the Sentry module. When a charging cable is plugged into the vehicle's charging socket, the MCU immediately activates the DC / DC module (OUT DC: 800V), converting the external power to a voltage suitable for the vehicle battery and beginning charging. Once charging is complete or when the charging cable is unplugged, the MCU automatically shuts down the DC / DC module to conserve energy. The MCU also monitors the vehicle's charging status by monitoring the voltage on the S+ / S- pins.

[0068] When the vehicle is off, the MCU optimizes the solar energy collected from the PV modules using the MPPT+ microcontroller unit. The DC / DC module (OUT DC: 12V / 5V) converts this energy to a voltage suitable for onboard electronics, powering the central control screen, seats, window lifts, and other onboard systems. The MCU also controls the power supply to the vehicle's air conditioning system, ensuring a comfortable environment for passengers even when the vehicle is parked.

[0069] The Sentry module automatically switches to the rooftop photovoltaic power source when the vehicle is turned off, and switches back to the vehicle's auxiliary battery when the vehicle is started. This not only saves energy but also extends the life of the auxiliary battery. The Sentry module enters a low-power recording mode when the vehicle is not vibrating and there are no moving objects. However, if vibration or movement is detected, it immediately activates to provide monitoring. This function is implemented using vibration and motion sensors. If the vehicle remains stationary for a set time (e.g., 5 minutes), the MCU activates the DC / DC module (OUTDC: 12V) to provide power to the onboard electronics. If the vehicle is moving or vibrating, the module shuts down after 5 minutes, further saving energy.

[0070] The system leverages the MCU's intelligent control capabilities, ensuring low-power operation in all vehicle states through precise power management and condition monitoring. This ensures stable power supply and safety monitoring for the vehicle's electronic devices. This design not only improves energy efficiency but also enhances vehicle safety and reliability.

[0071] In options 1 and 2, the electrical principle of the start control module of the on-board electronic equipment when the vehicle stops is as shown in the attached Figure 12As shown, the PPT+ roof battery pack 70 serves as the energy source, providing the necessary power and enabling precise power distribution and management via soft switches 1 through 4. These soft switches not only control current flow but also provide overload protection, ensuring that the system automatically cuts off power in abnormal situations to prevent damage. The vehicle's air conditioning system is controlled and powered via soft switch 1, ensuring a comfortable environment for passengers even when the vehicle is parked. The vehicle's central control panel is controlled via soft switch 2, ensuring that the driver can use the panel for navigation, entertainment, and other functions while the vehicle is parked. Soft switch 3 manages the power supply for the vehicle's window and seat control systems, ensuring smooth window and seat adjustment even when the vehicle is parked. The dashcam receives a stable power supply via soft switch 4, ensuring continuous recording of the surrounding environment even when the vehicle is parked. The entire system is intelligently controlled by an MCU (microcontroller unit), which coordinates the operating status of each soft switch and intelligently adjusts power distribution based on the vehicle's actual needs and external conditions, optimizing energy efficiency while ensuring stable system operation and passenger comfort. Through this design, the vehicle's electronic equipment can still operate normally when parked, while ensuring the rational use of energy and the safety and stability of the system.

[0072] The electrical principle of the system's low power operation is shown in the attached Figure 13 As shown in this low-power electrical schematic, the system is designed to optimize energy usage, ensuring that onboard electronics operate with minimal energy consumption whether the vehicle is running or stopped. The system uses Soft Switches 1, 2, 3, and 4 to precisely control power to various electronic modules. The DC / DC module (OUTDC: 500V) converts high voltage to a lower voltage suitable for onboard electronics, while the EV charging communication module (either the SIM8500 intelligent module or the MU8500CE LTE Cat 4 intelligent module, depending on actual needs) communicates with external charging devices, ensuring efficient charging when needed. The vehicle's 12V DC outlet receives power through Soft Switch 2, providing power to the vehicle's regular 12V system. The Sentry module receives power through Soft Switch 3, monitoring vehicle safety when parked. The DC / DC module (OUTDC: 12V / 5V) provides power to the USB receptacle, allowing mobile devices to charge. When the vehicle is stopped, the startup control module for onboard electronics is powered via soft switch 4. This module, controlled by the microcontroller (MCU), manages the power supply to these electronics when the vehicle is stopped. The entire system, intelligently controlled by the MCU, optimizes power distribution, ensuring adequate power supply to onboard electronics in all operating modes while maintaining low energy consumption and improving vehicle energy efficiency and safety.

[0073] The photovoltaic panel is connected to the MPPT controller and the roof battery pack 70 through a wire, converting solar energy into electrical energy and storing it. After the vehicle is turned off, the roof battery pack 70 can continue to provide power to the electrical equipment of the car 80 and the camera 60 on the luggage rack. Through the power supply switch (the power supply switch can be controlled by Bluetooth, APP, small program, infrared remote control, etc.), the power supply problem of the camera 60 (electronic sentry), the window lifting problem, the seat adjustment problem, and the use of air conditioning and multimedia on the center console after the car 80 is turned off can be solved. The output of the photovoltaic panel can also be connected to the input of the inverter / DC / DC charger, and the output of the inverter / DC / DC charger is connected to the charging gun to provide emergency charging for the electric car 80. The photovoltaic panel is connected to an output line 54, and a plug is provided at the end of the output line 54.

[0074] The present invention relates to an automatically retractable rooftop photovoltaic power generation device and its control system, and more particularly to a rooftop luggage rack with an external photovoltaic panel, a rooftop battery pack, and an automatically retractable rooftop luggage rack. The device is equipped with an electrical control power supply system after the vehicle is turned off, capable of bypassing power to the vehicle's air conditioner, windows, seats, and other components. The first and second photovoltaic panels are foldable photovoltaic panels made of waterproof, sewn fabric with an IP55 protection rating. The sewn fabric prevents glass scratches. Unfolding the photovoltaic panels increases charging power and provides sunshade for the vehicle. The second photovoltaic panel exposed on the rooftop of the luggage rack and the foldable, sewn first photovoltaic panel housed within are connected in parallel. When all panels are unfolded, their maximum power can reach over 1000W. While maintaining photovoltaic power generation efficiency, the photovoltaic panels can also be used for long periods without damaging the vehicle's paint. They can be folded and used an unlimited number of times without breaking, are easy to clean, and are highly wear-resistant.

[0075] When connected to a DC / AC or DC / DC inverter, the photovoltaic panels charge the rooftop battery pack and the vehicle battery, providing electricity for camping and daily life. The inverter / DC / DC output can also be connected to a charging cable for emergency charging of electric vehicles. This also addresses the power needs of vehicle monitoring after the vehicle is turned off, as well as the central control screen, seats, windows, air conditioning, and other systems, preventing excessive temperature rise inside the vehicle. The integrated MPPT controller and rooftop battery pack within the luggage rack also power the camera at the base of the luggage rack, activating the sentry function.

[0076] This power generation device features a retractable, foldable photovoltaic panel and battery. When unfolded, it provides shade and converts solar energy into stored electricity to power the vehicle's electrical devices, meeting the need for static power after the vehicle is turned off. A second photovoltaic panel on top of the luggage rack, with a power output exceeding 200W, can charge the rack's internal battery while the vehicle is moving or stopped, and the stored energy can be used to provide emergency charging for the main battery at any time.

[0077] The control system has the following features:

[0078] (1) This system is an integrated solution for a rooftop photovoltaic power generation system that integrates sunshade, power generation, power storage, conversion, and storage;

[0079] (2) This system also has the function of providing electronic sentry monitoring and power supply for central control, seats, and window lifting after the vehicle is turned off;

[0080] (3) An automatic flip-up device is provided. Before the car is driven, the photovoltaic panels at the bottom are manually folded and stored in the luggage rack and the upper cover is closed to reduce the occupied space.

[0081] (4) The first photovoltaic panel is folded and placed in the luggage rack base, and the first photovoltaic panel is unfolded by opening the cover to increase the power to meet the emergency charging needs of the electric vehicle.

[0082] (5) The practicality and functionality of the roof rack are improved, providing a more convenient and comfortable travel experience for self-driving enthusiasts.

[0083] (6) The photovoltaic panels fixed on the base of the luggage rack can charge the battery pack on the luggage rack for a long time, solving the battery life anxiety of users when using electronic devices in the car after the new energy vehicle is turned off.

[0084] In addition, it should be noted that the rooftop photovoltaic power generation device and its control system are not limited to application in new energy electric vehicles, but can also be applied to fuel-type vehicles.

[0085] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An automatic flip-up roof photovoltaic power generation device, characterized by: The invention comprises a luggage rack base which can be mounted on the roof of a car, a cover which can be flipped and mounted on the luggage rack base, a first photovoltaic panel which can be folded and stored in the luggage rack base, a second photovoltaic panel which covers the outer side of the cover, and a telescopic drive mechanism for driving the cover to flip open or close relative to the luggage rack base. The telescopic drive mechanism is mounted on the luggage rack base, and its output end is connected to the cover.

2. The automatic flip-up roof photovoltaic power generation device according to claim 1, characterized in that: A plurality of cameras for monitoring the surrounding conditions of the vehicle body are arranged on the outside of the luggage rack base.

3. The automatic flip-up roof photovoltaic power generation device according to claim 1, characterized in that: The telescopic drive mechanism includes a drive motor, a telescopic push rod and a motor controller. The motor controller is connected to the drive motor. One end of the telescopic push rod is connected to the shaft end of the drive motor, and the other end is hingedly connected to the cover plate.

4. The automatic flip-up roof photovoltaic power generation device according to claim 1, characterized in that: One side of the cover plate is hinged to the luggage rack base through a hinge, and a locking device for locking the cover plate to the luggage rack base is provided between the other side and the luggage rack base.

5. The automatic flip-up roof photovoltaic power generation device according to claim 1, characterized in that: The luggage rack base comprises a seat body and a connecting block arranged on the lower surface of the seat body for connecting with the top of the car.

6. The automatic flip-up roof photovoltaic power generation device according to claim 3, characterized in that: A recessed slot for accommodating a roof battery pack, a driving motor and a telescopic push rod is provided in the middle of the luggage rack base, a cover is provided above the slot, and the roof battery pack is located on both sides of the driving motor.

7. A control system for a rooftop photovoltaic power generation device according to any one of claims 1 to 6, characterized in that: It includes a first photovoltaic panel, a second photovoltaic panel, an MPPT controller, a roof battery pack, a drive motor, a camera, an inverter, a charging gun and a power switching switch; the first photovoltaic panel and the second photovoltaic panel constitute a photovoltaic cell panel, the MPPT controller is connected between the photovoltaic cell panel and the roof battery pack, the drive motor, camera and inverter are respectively connected to the roof battery pack; the power switching switch is connected between the roof battery pack, the car battery and the car interior system load.

8. The control system according to claim 7, characterized in that: It also includes a charging management module, a starting control module for on-board electronic equipment when the vehicle stops, an EV charging communication and control module, and a DC / DC module. The photovoltaic panel is connected to the EV charging communication and control module through an MPPT controller and a micro-inverter; at the same time, the photovoltaic panel is also connected to the roof battery pack through the MPPT controller, the roof battery pack is connected to the DC / DC module, the camera and the charging management module are respectively connected to the DC / DC module, and the starting control module for on-board electronic equipment when the vehicle stops is connected to the charging management module.

9. The control system according to claim 7, characterized in that: It also includes an MCU, an EV charging communication module, a start-up control module for on-board electronic equipment when the vehicle stops, and a DC / DC module. The photovoltaic panel is connected to the roof battery pack through an MPPT controller and a micro-inverter; the DC / DC module is connected to the roof battery pack, the EV charging communication module is connected to the DC / DC module, and the camera, the start-up control module for on-board electronic equipment when the vehicle stops, and the DC / DC module are respectively connected to the MCU.

10. The control system according to claim 9, characterized in that: The output voltage of the DC / DC module is 800V, 12V or 5V.

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