Solar energy storage LED display screen system

Abstract

The invention relates to the technical field of solar energy storage, in particular to a solar energy storage LED display screen system which comprises a support, an LED screen and a solar assembly, a combiner box, a photovoltaic controller and a hybrid energy storage module are installed on the back face of the support, the solar assembly is installed on the top of the support, the LED screen is installed at the front end of the support, and the hybrid energy storage module is installed on the back face of the support. The solar assembly is connected to the photovoltaic controller through the combiner box, the energy storage connecting end of the photovoltaic controller is connected with the hybrid energy storage module, the load output end of the photovoltaic controller is connected with the LED driving module, and the output end of the LED driving module is connected with the LED screen power interface. The invention aims to solve the problems of poor system power supply stability and low photovoltaic electric energy utilization rate caused by lack of a power supply regulation mechanism dynamically adaptive to illumination intensity in outdoor practical application and no effective regular design of cables of an existing solar energy storage LED display screen system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar energy storage, in particular to a solar energy storage LED display screen system. BACKGROUND

[0002] With the development of new energy technology, solar energy storage LED display screen systems are widely used in outdoor advertising display, public information release, emergency warning and other scenes due to the advantages of not relying on power supply, energy saving and environmental protection. Such systems are usually composed of solar components, energy storage modules, controllers, LED screens and supports, and the core requirement is to realize long-term, continuous and stable display function in complex outdoor lighting environment.

[0003] However, the photovoltaic energy storage power supply logic of the existing system is mostly fixed mode. When the light is sufficient, the photovoltaic is forced to supply power to the LED screen and charge the energy storage at the same time (such as 70% for LED screen and 30% for energy storage charging). When the light is insufficient, the energy storage is directly switched to independent power supply. Even if the photovoltaic can still provide part of the electric energy (such as cloudy and weak light), it is idle and wasted, and there is no precise linkage with the real-time change of light intensity, which reduces the utilization efficiency of photovoltaic electric energy. At the same time, the exposed cable of the system has no effective and regular design, which brings great inconvenience to the later maintenance, maintenance and fault diagnosis, and increases the operation and maintenance cost. SUMMARY

[0004] The purpose of the present application is to provide a solar energy storage LED display screen system to solve the problem that the existing solar energy storage LED display screen system lacks a power supply adjustment mechanism that dynamically adapts to the light intensity in outdoor practical application, and the cable has no effective and regular design, resulting in poor system power supply stability and low photovoltaic electric energy utilization.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A solar-powered LED display system includes a bracket, an LED screen, and solar panels. A combiner box, a photovoltaic controller, and a hybrid energy storage module are mounted on the back of the bracket. The solar panels are mounted on the top of the bracket, and the LED screen is mounted on the front of the bracket. The solar panels are connected to the photovoltaic controller via the combiner box. The energy storage connection terminal of the photovoltaic controller is connected to the hybrid energy storage module. The load output terminal of the photovoltaic controller is connected to an LED driver module. The output terminal of the LED driver module is connected to the power interface of the LED screen. The control terminal of the LED driver module is connected to the dimming and refresh rate control signal terminal of the photovoltaic controller. The communication interface of the photovoltaic controller is connected to the solar panels, the hybrid energy storage module, the LED driver module, and an environmental sensing and control unit. The environmental sensing and control unit can collect light intensity and transmit this data to the photovoltaic controller. The photovoltaic controller adjusts the system's operating mode based on the light intensity data. A cable management board is also mounted on the back of the bracket to organize the connection lines between the solar panels and the components on the back of the bracket.

[0007] Preferably, the adjustment of the system operating mode includes: the photovoltaic controller determines the conditions of sufficient, insufficient, and no sunlight based on the light intensity data. Under sufficient sunlight conditions, the system switches to a hybrid energy storage module charging and photovoltaic power supply mode; under insufficient sunlight conditions, the system switches to a hybrid energy storage module power supply and photovoltaic power supply mode; under no sunlight conditions, the system switches to a hybrid energy storage module power supply mode that independently powers the system.

[0008] Preferably, the hybrid energy storage module charging and photovoltaic power supply mode specifically includes: the main control unit of the photovoltaic controller collects the SOC status of the hybrid energy storage module and divides it into charging stages, and then performs the charging action through the power management circuit in its own circuit module, while simultaneously transmitting photovoltaic power to the LED driver module through its own load output terminal to power the LED screen.

[0009] Preferably, the hybrid energy storage module power supply and photovoltaic power supply mode specifically includes: the main control unit of the photovoltaic controller collects the output data of the solar module, the power consumption data of the LED screen and the SOC status of the hybrid energy storage module, and allocates photovoltaic power and hybrid energy storage module power through the power management circuit, giving priority to using photovoltaic power to power the LED screen.

[0010] Preferably, the hybrid energy storage module includes a battery pack, a capacitor pack, and a protection unit. The battery pack and the capacitor pack are connected in parallel via a switching element. The protection unit is connected in series in the parallel circuit formed by the battery pack and the capacitor pack. The control terminal of the switching element is connected to the control signal output terminal of the photovoltaic controller, and the on / off state of the switching element is controlled by the control signal output by the photovoltaic controller.

[0011] Preferably, the surface of the cable tray has a fixed cable routing channel that runs vertically through it.

[0012] Preferably, the surface of the cable tray is further provided with a vertically connected follow-up cable routing channel and a reserved redundant channel, and the side walls of the two channels are connected.

[0013] Preferably, a first spring clip is slidably connected in the follow-up cable routing channel, which is used to clamp the cable passing through the follow-up cable routing channel, and a second spring clip is fixedly connected in the fixed cable routing channel for clamping the cable in the fixed cable routing channel.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The system collects light intensity data through environmental perception and control unit. The photovoltaic controller combines the output capacity of solar modules, the real-time power consumption of LED screen and the SOC status of energy storage module to intelligently determine the working condition and realize the switching of power supply mode from photovoltaic priority to energy storage supplement. When there is sufficient light, solar power is used first to charge energy storage module. When there is insufficient light or no light, it switches to energy storage power supply or collaborative power supply mode to maximize the use of clean energy, reduce the consumption of non-renewable energy, and significantly improve the system endurance in the absence of external power supply.

[0016] 2. The integrated bracket design centrally mounts core components such as combiner boxes, photovoltaic controllers, and hybrid energy storage modules on the back of the bracket. Combined with the fixed cable routing channels, follow-up cable routing channels, and reserved redundant channels of the cable tray, the cable is neatly clamped and flexibly adapted by spring clips. This not only avoids the risk of wear or failure caused by messy cables, but also simplifies the installation and subsequent maintenance process, and improves the overall structural stability and operational reliability of the system.

[0017] 3. The photovoltaic controller links the LED driver module through the dimming and refresh rate control signal terminals, and can dynamically adjust the display parameters of the LED screen according to different lighting conditions. It ensures display clarity in strong light environments and optimizes power consumption output in low light or no light environments, achieving a precise match between display effect and energy-saving requirements, taking into account both user visual experience and system energy consumption control. Attached Figure Description

[0018] Fig. 1 This is a structural connection block diagram of the solar energy storage LED display system of the present invention;

[0019] Fig. 2 This is a schematic diagram of the solar energy storage LED display system of the present invention;

[0020] Fig. 3 This is a cross-sectional structural diagram of the wire harness plate of the present invention.

[0021] In the diagram: 1. Bracket; 2. LED screen; 3. Solar panel; 4. Cable management board; 5. Follow-up cable routing channel; 6. First spring clip; 7. Sliding block; 8. Sliding groove; 9. Reserved redundant channel; 10. Fixed cable routing channel; 11. Second spring clip. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figs. 1 to 3 The present invention provides a technical solution.

[0024] A solar energy storage LED display system includes a bracket 1, an LED screen 2, and a solar module 3. A combiner box, a photovoltaic controller, and a hybrid energy storage module are installed on the back of the bracket 1. The solar module 3 is installed at a 30° tilt angle on the top of the bracket 1. The LED screen 2 is installed at the front of the bracket 1. A cable management board 4 is also installed on the back of the bracket 1. The cable management board 4 is used to organize the connection lines between the solar module 3 and the components on the back of the bracket 1 to avoid messy cables.

[0025] Solar module 3 consists of multiple crystalline silicon modules. The crystalline silicon modules are connected to the photovoltaic controller through a combiner box (model: CNBM-4P). Each crystalline silicon module collects electrical energy through the combiner box and connects to the photovoltaic input terminal of the photovoltaic controller through photovoltaic cables. Each crystalline silicon module contains six monocrystalline silicon cells. The module frame is made of aluminum alloy and the back sheet is made of TPT composite film.

[0026] The photovoltaic controller (e.g., the EPeverTRACER-4215BN photovoltaic controller) communicates with the solar module 3, the hybrid energy storage module, the LED driver module, and the environmental sensing and control unit. The photovoltaic controller integrates MPPT (maximum power point tracking), energy storage charge and discharge control, and load adaptation functions. The photovoltaic controller includes a circuit module and external connection ports. The circuit module includes a main control unit, MPPT execution circuit, power management circuit, and multiple communication interfaces. The external connection ports include a photovoltaic input terminal, an energy storage connection terminal, and a load output terminal.

[0027] The circuit module provides functional support for the external connection port, the main control unit coordinates the work of each module, the MPPT execution circuit realizes maximum power point tracking, the power management circuit is responsible for the regulation of charging and discharging and load power supply, the external connection port realizes the adaptation connection with external components, the photovoltaic input terminal is connected to the combiner box output terminal to receive the power of the solar module and optimize the power collection through the MPPT execution circuit, the energy storage connection terminal is connected to the hybrid energy storage module, and the power management circuit realizes the charging and discharging control of the energy storage unit, and the load output terminal is connected to the LED driver module, which is adapted to the load power supply requirements through the power management circuit.

[0028] The photovoltaic controller's communication interface is connected to the environmental sensing and control unit and the remote communication module, respectively, to realize environmental parameter acquisition, control command transmission and remote data interaction.

[0029] The photovoltaic controller employs a multi-parameter coordinated control strategy. Based on the irradiance data transmitted from the environmental sensing and control unit, combined with the output capacity of the solar module 3, the real-time power consumption of the LED screen 2, and the SOC (state of charge) status of the hybrid energy storage module, the controller determines whether the irradiance is sufficient, insufficient, or absent, thereby achieving efficient utilization of photovoltaic power, reasonable charging and discharging of the energy storage module, and stable operation of the LED screen 2. Specific control methods include:

[0030] A dynamic adaptation mechanism for MPPT tracking parameters is established: The photovoltaic controller collects the instantaneous power consumption signal of LED screen 2 and the SOC data of the hybrid energy storage module, and uses the two as core control variables to dynamically optimize the MPPT tracking parameters. The main control unit performs real-time calculation and analysis on the collected dual parameters and adjusts the working parameters of the MPPT execution circuit to ensure that the photovoltaic power collection is always in the optimal state, while taking into account the power supply requirements of LED screen 2 and the charging and discharging balance of the energy storage module.

[0031] Collaborative control strategy under sufficient sunlight conditions: When the environmental perception and control unit detects that the light intensity meets the preset threshold (i.e., the output capacity of solar module 3 is greater than the sum of the real-time power consumption of LED screen 2 and the energy storage charging demand), the photovoltaic controller starts the synchronous execution mode of segmented energy storage charging and direct power supply to LED screen 2. In this mode, the main control unit controls the energy storage connection terminal through the power management circuit and divides the charging stage (such as constant current charging stage and constant voltage charging stage) according to the current SOC state of the hybrid energy storage module to achieve efficient and safe charging of the hybrid energy storage module. At the same time, the photovoltaic controller directly delivers the photovoltaic power optimized by MPPT to the LED driver module through the load output terminal to power the LED screen 2 and reduce the discharge loss of the hybrid energy storage module.

[0032] Combined power supply strategy under insufficient light conditions: When the environmental perception and control unit detects that the light intensity is lower than the preset threshold (i.e., the output capacity of solar module 3 is insufficient to meet the real-time power consumption requirements of LED screen 2), the photovoltaic controller switches to a combined photovoltaic and energy storage power supply mode. Based on the real-time collected power consumption data of LED screen 2, the actual output data of solar module, and the SOC status of hybrid energy storage module, the main control unit dynamically allocates the output power ratio of photovoltaic and energy storage modules through the power management circuit. It prioritizes the use of photovoltaic power to power LED screen 2, and the insufficient part is supplemented by the hybrid energy storage module through the energy storage connection terminal to ensure the stability of LED screen 2's operating parameters, while avoiding the waste of photovoltaic power and the over-discharge of hybrid energy storage module.

[0033] Independent power supply and adaptive regulation strategy for energy storage under no-sunlight conditions: When the environmental sensing and control unit detects no effective sunlight (i.e., no output from the solar modules), the photovoltaic controller controls the hybrid energy storage module to independently supply power to the system through the energy storage connection terminal.

[0034] The hybrid energy storage module consists of a battery pack, a capacitor bank, and an integrated protection unit. The entire module is connected to the energy storage terminal of the photovoltaic controller via wires, enabling the storage and release of electrical energy and ensuring system power supply stability. The battery pack, as the main energy storage unit of the hybrid energy storage module, uses lithium iron phosphate batteries, specifically CATLLF280K batteries. This battery pack is equipped with an aluminum battery box, providing excellent heat dissipation and structural protection. It is mainly used for long-term storage of photovoltaic energy and basic power supply for LED screen 2. The capacitor bank, as the auxiliary energy storage unit, uses Maxwell BCAP0350 capacitors. Its core function is to absorb the instantaneous peak current generated during the operation of LED screen 2, preventing the peak current from impacting the battery pack and photovoltaic controller, and ensuring the voltage stability of the entire power supply system.

[0035] The hybrid energy storage module integrates an integrated protection unit, which incorporates the JK-BMS battery management system. The specific model is JK-B2A10S. It can realize four core protection functions: overcharge, over-discharge, over-temperature, and short circuit. The protection unit has preset protection parameters: overcharge protection voltage threshold of 14.6V, over-discharge protection voltage threshold of 10V, and over-temperature protection threshold of 70℃. When the voltage or temperature of the battery pack or capacitor pack reaches the above thresholds, or when a short circuit fault occurs, the protection unit can quickly activate the protection mechanism, cut off the corresponding circuit, and prevent damage to the hybrid energy storage unit.

[0036] The battery pack and capacitor pack are connected in parallel through a switching element. The integrated protection unit is connected in series with this parallel circuit. The entire circuit is connected to the energy storage connection terminal of the photovoltaic controller through a wire. The control terminal of the switching element is connected to the control signal output terminal of the photovoltaic controller. It can receive the control signal output by the photovoltaic controller and thus form a linkage with the photovoltaic controller. Based on the SOC threshold of the hybrid energy storage module, the working state of the switching element is dynamically adjusted to achieve precise control of the energy storage charging and discharging process.

[0037] The input terminal of the LED driver module is connected to the load output terminal of the photovoltaic controller, the output terminal of the LED driver module is connected to the power interface of the LED screen 2, and the control terminal of the LED driver module is connected to the dimming and refresh rate control signal terminal of the photovoltaic controller.

[0038] The environmental perception and control unit includes a light sensor (model BH1750) and three temperature sensors (model DS18B20). The light sensor is installed on top of the solar module 3 to accurately collect real-time ambient light intensity data. The three temperature sensors are respectively attached to the hybrid energy storage module, the back panel of the LED screen 2, and the photovoltaic controller housing to achieve synchronous acquisition of the operating temperature of the core components. After collecting parameters such as light intensity and temperature of each core component, the environmental perception and control unit performs preliminary processing on the parameters and generates corresponding control signals. These signals are transmitted to the sensor signal input terminal of the photovoltaic controller via signal cables. The control signals provide the photovoltaic controller with a basis for regulation, assisting it in accurately adjusting the charging and discharging current of the hybrid energy storage module and the operating parameters of the LED screen 2, ensuring stable operation of the system under different environmental conditions.

[0039] The remote communication module integrates a wireless communication protocol. Its core function is to enable remote data interaction between the cloud monitoring platform and the system. It supports the cloud to send remote parameter adjustment commands to the photovoltaic controller. The remote communication module establishes a connection with the communication interface of the photovoltaic controller through a communication cable and establishes a two-way data interaction link with the cloud monitoring platform to realize remote visual management and remote operation and maintenance control of the system's operating status.

[0040] The surface of the cable tray 4 has a vertically connected fixed cable routing channel 10. When the solar module 3 is fixedly installed on the top of the bracket 1, the wires can be directly connected to the corresponding terminals on the back of the bracket through this channel.

[0041] The surface of the cable tray 4 is also provided with a vertically connected follow-up cable routing channel 5 and a reserved redundant channel 9, and the side walls of the two channels are connected. When the solar module 3 is installed on the top of the bracket 1 in a light-tracking rotation manner according to the existing technology, it can rotate with the light angle. The cable passes through the follow-up cable routing channel 5 from top to bottom, then through the reserved redundant channel 9 from bottom to top, and then through the fixed cable routing channel 10 from top to bottom. When the solar module 3 rotates, it pulls the cable to slide up and down in the follow-up cable routing channel 5. The cable in the reserved redundant channel 9 is replenished to the follow-up cable routing channel 5 in time through the connection path between the two to adapt to the movement requirements.

[0042] A first spring clip 6 is slidably connected inside the follow-up cable routing channel 5. Its function is to clamp the cable passing through the follow-up cable routing channel 5. A sliding block 7 is fixedly connected to the surface of the first spring clip 6. A corresponding sliding groove 8 is opened on the inner wall of the follow-up cable routing channel 5. The sliding block 7 is embedded in the sliding groove 8, so that the first spring clip 6 can slide up and down with the cable. (As needed, the contact surface between the sliding block 7 and the sliding groove 8 can be set with rollers or balls to change sliding friction into rolling friction and reduce movement resistance.) A second spring clip 11 is fixedly connected inside the fixed cable routing channel 10. It is used to clamp the cable inside the fixed cable routing channel 10. With the double clamping of the first spring clip 6 and the second spring clip 11, the cable length between the two can be locked, matching the reserved redundancy required for the movement of the cable in the follow-up cable routing channel 5. At the same time, it is convenient to adjust the length of the cable section according to actual needs.

[0043] Specifically, this solution involves the photovoltaic controller executing a strategy based on environmental sensing data, energy storage status, and load requirements, following a modular control logic to achieve efficient and stable system operation. The specific execution process is as follows:

[0044] MPPT Dynamic Adjustment Execution Logic: The photovoltaic controller dynamically adjusts the MPPT tracking parameters based on the SOC state of the hybrid energy storage module and the real-time power consumption of the LED load (i.e., the set of units in the system that consume photovoltaic or energy storage power to achieve display functions) as the core triggering conditions. Specifically, the following is executed:

[0045] When the SOC of the hybrid energy storage module reaches a preset high threshold, the photovoltaic controller reduces the MPPT tracking accuracy and prioritizes the allocation of photovoltaic output power to the LED load to avoid overcharging of the hybrid energy storage module;

[0046] When the real-time power consumption of LED screen 2 is greater than the real-time output power of photovoltaic modules, the photovoltaic controller increases the MPPT tracking frequency to maximize the photovoltaic power collection efficiency. The power consumption gap of LED screen 2 is supplemented by the hybrid energy storage module through discharge.

[0047] When the real-time power consumption of LED screen 2 is less than the real-time output power of the photovoltaic module, the photovoltaic controller reduces the MPPT tracking frequency, and the excess output power of the photovoltaic is used to charge the hybrid energy storage module.

[0048] Energy storage charging and discharging control execution logic: Charging stage control: When the SOC of the hybrid energy storage module is below 90%, the photovoltaic controller divides the charging mode according to the SOC range and executes precise charging control through the power management circuit: If the SOC is in the range of 20%~80%, the constant current fast charging mode is started to improve charging efficiency; if the SOC is in the range of 80%~90%, the constant voltage slow charging mode is switched to avoid overcharging damage to the energy storage unit caused by high current charging; when the SOC reaches 90%, the photovoltaic controller controls the disconnection of the energy storage charging circuit, stops charging the hybrid energy storage module, and directly supplies all the power generated by the photovoltaic module to the LED load, taking into account both energy storage overcharge protection and photovoltaic power utilization.

[0049] Discharge Phase Control: When the system relies on the hybrid energy storage module for power supply, the photovoltaic controller dynamically adjusts the discharge strategy and LED screen 2 operating parameters according to the SOC range: When the SOC is in the range of 50%~90%, the hybrid energy storage module matches the discharge current with the real-time power consumption of LED screen 2 to ensure that LED screen 2 operates at full brightness and full refresh rate to meet the best display effect; when the SOC is in the range of 20%~50%, the photovoltaic controller sends an adjustment signal to the LED driver module to control LED screen 2 to reduce brightness and refresh rate, thereby extending the energy storage power supply time by reducing load power consumption; when the SOC is below 20%, LED screen 2 automatically enters sleep mode, retaining only the remote communication function to transmit system status information, avoiding lifespan degradation caused by deep discharge of energy storage.

[0050] Temperature-linked control execution logic: The photovoltaic controller receives temperature data of the hybrid energy storage module collected by the environmental sensing and control unit, sets temperature adaptation ranges for each charging and discharging stage, and executes adaptive control: Temperature linkage during charging stage: The charging temperature adaptation range is set to 10℃~60℃, with 25℃~45℃ being the optimal operating range: When the energy storage temperature is within this range, the rated charging current corresponding to the SOC is maintained to balance charging efficiency and energy storage safety; when the temperature is between 45℃ and 60℃, the charging current is linearly reduced as the temperature increases, decreasing by 20% for every 5℃ increase, to avoid high-current charging in high-temperature environments accelerating battery aging; when the temperature exceeds 60℃, the system immediately stops charging; when the temperature is between 10℃ and 25℃, constant current fast charging is prohibited, and only constant voltage slow charging is allowed to prevent lithium deposition caused by low-temperature high-current charging; when the temperature is below 10℃, the system pauses charging.

[0051] Temperature-linked discharge phase: The discharge temperature adaptation range is set to -10℃ to 65℃, with 0℃ to 55℃ being the optimal operating range. When the energy storage temperature is within this range, the discharge current has no additional restrictions and perfectly matches the real-time power consumption output of LED screen 2. When the temperature is between 55℃ and 65℃, the discharge current is limited, and the brightness coefficient of LED screen 2 is reduced by 50% to avoid the risk of thermal runaway caused by high-temperature discharge. When the temperature exceeds 65℃, the system pauses discharge and only retains the remote communication function to transmit status information. When the temperature is between -10℃ and 0℃, the discharge current is limited, and LED screen 2 simultaneously reduces its brightness coefficient and refresh rate to balance power supply demand and energy storage protection. When the temperature is below -10℃, the system prohibits discharge, and LED screen 2 directly enters sleep mode.

[0052] LED Screen 2 Operating Parameter Adjustment Execution Logic: Based on environmental sensing data and energy storage status, the photovoltaic controller dynamically adjusts the operating parameters of LED Screen 2: When there is sufficient light (the environmental sensing and control unit detects that the light intensity has reached the preset threshold), LED Screen 2 operates at the preset high brightness and high refresh rate; when there is insufficient light, LED Screen 2 reduces its brightness and refresh rate to an appropriate level; when there is no light and the SOC of the hybrid energy storage module is between 20% and 50% (medium to low range), the brightness and refresh rate are further reduced; when the environmental sensing and control unit detects that the temperature of LED Screen 2 is higher than the safety threshold, LED Screen 2 automatically reduces its brightness until the temperature returns to the normal range.

[0053] System working process execution logic: Initialization phase: After the system is powered on, the environmental perception and control unit collects parameters such as initial light intensity and temperature of each core component; the photovoltaic controller detects the working status of solar module 3, hybrid energy storage module, LED screen 2 and remote communication module, and obtains the initial SOC of energy storage; LED screen 2 starts up in low power mode;

[0054] During periods of sufficient sunlight: The photovoltaic controller activates MPPT (Maximum Power Point Tracking) and performs segmented charging to the hybrid energy storage module through the power management circuit, while simultaneously supplying photovoltaic power directly to LED screen 2; LED screen 2 switches to preset high brightness and high refresh rate operating parameters; when the energy storage SOC reaches 90% (high threshold), charging stops, and the photovoltaic power is fully supplied to LED screen 2;

[0055] During periods of insufficient sunlight: The photovoltaic controller calculates the real-time output of the photovoltaic modules, allocates a portion of the power to LED screen 2, and supplements the remaining power consumption demand by the discharge of the hybrid energy storage module, dynamically adjusting the energy storage discharge current to maintain the stability of the operating parameters of LED screen 2;

[0056] During periods without sunlight: The hybrid energy storage module is powered independently, and the photovoltaic controller adjusts the brightness and refresh rate of LED screen 2 according to the SOC threshold; when the SOC is below 20%, LED screen 2 enters sleep mode.

[0057] Anomaly Handling Phase: When the environmental sensing and control unit or the photovoltaic controller detects anomalies such as solar module 3 being shaded, hybrid energy storage module malfunctions (overheating, overcharging, over-discharging, short circuit), or LED screen 2 failure, the photovoltaic controller immediately triggers an alarm signal and uploads it to the cloud monitoring platform via the remote communication module; at the same time, the working strategy is adjusted: the charging power is reduced when the solar module is shaded, and the screen is stopped from working when the hybrid energy storage module or LED screen 2 fails, to prevent the fault from escalating.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solar-powered LED display system, comprising a support frame (1), an LED screen (2), and a solar panel (3), characterized in that: The bracket (1) is equipped with a combiner box, a photovoltaic controller, and a hybrid energy storage module on its back. The solar panel (3) is installed on the top of the bracket (1), and the LED screen (2) is installed on the front end of the bracket (1). The solar panel (3) is connected to the photovoltaic controller via the combiner box. The energy storage connection end of the photovoltaic controller is connected to the hybrid energy storage module. The load output end of the photovoltaic controller is connected to the LED driver module. The output end of the LED driver module is connected to the power interface of the LED screen (2). The control end of the LED driver module is connected to the dimming and refresh rate control signal end of the photovoltaic controller. The communication interface of the photovoltaic controller is connected to the solar panel (3), the hybrid energy storage module, the LED driver module, and the environmental sensing and control unit. The environmental sensing and control unit can collect the light intensity and transmit the data to the photovoltaic controller. The photovoltaic controller adjusts the system working mode based on the light intensity data. A cable tray (4) is also installed on the back of the bracket (1). The cable tray (4) is used to organize the connection lines between the solar panel (3) and the components on the back of the bracket (1).

2. The solar energy storage LED display system according to claim 1, characterized in that, The system's operating mode can be adjusted as follows: the photovoltaic controller determines the conditions of sufficient, insufficient, and no sunlight based on the sunlight intensity data. Under sufficient sunlight conditions, the system switches to a hybrid energy storage module charging and photovoltaic power supply mode; under insufficient sunlight conditions, the system switches to a hybrid energy storage module power supply and photovoltaic power supply mode; under no sunlight conditions, the system switches to a hybrid energy storage module power supply mode that independently powers the system.

3. The solar energy storage LED display system according to claim 2, characterized in that, The hybrid energy storage module charging and photovoltaic power supply mode specifically includes: the main control unit of the photovoltaic controller collects the SOC status of the hybrid energy storage module and divides the charging stage, and then performs the charging action through the power management circuit in its own circuit module. At the same time, the photovoltaic power is transmitted to the LED driver module through its own load output terminal to power the LED screen (2).

4. The solar energy storage LED display system according to claim 2, characterized in that, The hybrid energy storage module power supply and photovoltaic power supply modes specifically include: the main control unit of the photovoltaic controller collects the output data of the solar module (3), the power consumption data of the LED screen (2) and the SOC status of the hybrid energy storage module, and allocates photovoltaic power and hybrid energy storage module power through the power management circuit, giving priority to using photovoltaic power to power the LED screen (2).

5. The solar energy storage LED display system according to claim 1, characterized in that, The hybrid energy storage module includes a battery pack, a capacitor pack, and a protection unit. The battery pack and the capacitor pack are connected in parallel via a switching element. The protection unit is connected in series in the parallel circuit formed by the battery pack and the capacitor pack. The control terminal of the switching element is connected to the control signal output terminal of the photovoltaic controller, and the on / off state of the switching element is controlled by the control signal output by the photovoltaic controller.

6. The solar energy storage LED display system according to claim 1, characterized in that, The surface of the cable tray (4) is provided with a fixed cable routing channel (10) that runs vertically through the cable tray.

7. The solar energy storage LED display system according to claim 6, characterized in that, The surface of the cable tray (4) is provided with a vertically connected follow-up cable routing channel (5) and a reserved redundant channel (9), and the side walls of the two channels are connected.

8. The solar energy storage LED display system according to claim 7, characterized in that, The following cable routing channel (5) is slidably connected to a first spring clip (6), which is used to clamp the cable passing through the following cable routing channel (5). The fixed cable routing channel (10) is fixedly connected to a second spring clip (11), which is used to clamp the cable in the fixed cable routing channel (10).

Images