Light storage and charging integrated sunlight room system and control method

Abstract

The invention discloses a light storage and charging integrated sunlight room system and a control method, and relates to the technical field of photovoltaic energy storage. The system comprises a sunlight room structure capable of being opened and closed, an angle-adjustable photovoltaic module laid on a flashing board, an energy storage module used for storing excess electric energy, a charging pile module used for charging an electric vehicle, an indoor load module, a mains supply access module and an energy router. The energy router comprises an acquisition input module, a logic control module, an output execution module and a communication module, and can acquire power consumption data of each module in real time, formulate an energy scheduling strategy, dynamically adjust an energy path through a relay switch array group, and realize switching among photovoltaic power generation, energy storage, a charging pile, a load and commercial power supply. A user terminal is accessed through an interconnection interface, so that remote monitoring, control and energy consumption query are realized; the light storage and charging integrated sunlight room system can solve the problems of unstable power supply, low electric energy utilization rate and low integration level, and is suitable for sunlight room buildings and new energy use scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic energy storage, and particularly relates to an integrated photovoltaic energy storage charging sunroom system and a control method therefor. Background Art

[0002] With the adjustment of the global energy structure and the promotion of low-carbon goals, green, energy-saving, and intelligent building forms have gradually become an important direction for future development; as a building form that integrates daylighting, ventilation, and aesthetics, sunrooms have been widely used in residential, commercial, and public buildings in recent years. At the same time, the maturity of photovoltaic technology and the popularization of energy storage devices have made it possible to utilize sunroom buildings to achieve energy self-sufficiency in sunrooms.

[0003] Currently, photovoltaic sunrooms mainly convert solar energy into electrical energy by installing solar panels on the roof or facade for use by indoor lighting, air conditioning, and other equipment.

[0004] However, traditional photovoltaic sunrooms have the following problems: First, photovoltaic power generation is intermittent and unstable, greatly affected by weather and day-night changes, and it is difficult to achieve continuous and stable power supply.

[0005] Second, the lack of an effective energy storage system results in the inability to store excess electrical energy, causing energy waste.

[0006] Third, the failure to integrate the function of charging electric vehicles cannot meet the charging needs of users with new energy vehicles.

[0007] To solve the above problems, in recent years, integrated photovoltaic energy storage charging solutions have emerged, integrating photovoltaic power generation, energy storage systems, and charging piles to form a complete energy system. However, existing integrated photovoltaic energy storage charging systems are mostly applied to independent charging stations or large commercial facilities and have not been widely used in buildings such as sunrooms.

[0008] In addition, there is still room for improvement in the integration level, intelligent level, and user experience of existing integrated photovoltaic energy storage charging systems. For example, some systems do not fully consider the architectural aesthetics and space utilization rate in design, and the energy storage devices occupy a large amount of space, affecting the building layout; at the same time, the intelligent degree of the energy management system is limited, and it is unable to dynamically adjust the energy distribution strategy according to user needs and energy prices.

[0009] In summary, it is found that the existing technology has at least the following technical problems:

[0010] Existing photovoltaic sunrooms have technical problems of unstable power supply, low electrical energy utilization rate, and low integration level. Summary of the Invention

[0011] The purpose of the present invention is to provide an integrated solar storage and charging sunroom system and a control method, so as to solve the technical problems of unstable power supply, low power utilization rate and low integration degree existing in the existing photovoltaic sunrooms.

[0012] The preferred technical solutions provided by the present invention and the many technical effects that can be produced are described in detail below.

[0013] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0014] The present invention provides an integrated solar storage and charging sunroom system, including a sunroom, the rain shield on the top of the sunroom can be rotated and opened and closed; and a photovoltaic module, the photovoltaic module is laid on the rain shield and adjusts the angle facing the sun with the rotation of the rain shield; and a energy storage module, including an energy storage battery pack and a battery management system, which is used to store the excess electric energy of the photovoltaic module and release electric energy to the load when the photovoltaic power supply is insufficient; and a charging pile module and an in-room load module; the in-room load module is the electrical equipment in the sunroom; and a mains access module, which is used to switch to grid power supply when the output electric energy supply of the photovoltaic module and the energy storage module is insufficient; and an energy router, including a collection input module, which is used to collect the power consumption data of the photovoltaic module, the energy storage module, the charging pile module, the in-room load module and the mains access module in real time; a logic control module, which dynamically generates an energy scheduling strategy according to the collected power consumption data and controls the flow direction of electric energy; an output execution module is provided with a relay switch array group for adjusting the electrical connection paths of the photovoltaic module, the energy storage module, the charging pile module, the in-room load module and the mains access module, and is used for the interconnection and interoperability of photovoltaic, energy storage, charging piles, loads and mains; a communication module, which provides two-way real-time communication between the photovoltaic module, the energy storage module, the charging pile module and the energy router, and is provided with an interconnection interface for data interaction with the user terminal; the charging pile module is used to charge an electric vehicle and send a charging demand signal to the energy router.

[0015] In one embodiment, the power consumption data collected by the collection input module includes the power generation power of the photovoltaic module, the remaining power and power supply power of the energy storage module, the demand power of the charging pile module, the total load power consumption of the in-room load module and the mains power of the mains access module.

[0016] In one embodiment, the energy storage battery pack is electrically connected to the battery management system; the acquisition input module is electrically connected to the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains power access module; the communication module is electrically connected to the photovoltaic module, the battery management system, the charging pile module, and the acquisition input module and the output execution module of the energy router; the output execution module is electrically connected to the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains power access module.

[0017] In one embodiment, the energy router is provided with a device interface, and the device interface is used to connect and dock the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains power access module; when the module is connected to the device interface, the energy router automatically identifies and matches the module types, power parameters, and communication protocols of the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains power access module; according to the identified module type connected, the device interface dynamically switches the energy path to electrical input or electrical output through the IGBT device built in the energy router.

[0018] In one embodiment, the device interface is communicatively connected to the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains power access module through Modbus-TCP and CAN bus, so that the energy router can obtain the electrical parameters of the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains power access module at a transmission delay lower than 100 ms.

[0019] In one embodiment, the energy scheduling strategy of the logic control module is as follows: when the light is sufficient, the photovoltaic module is preferentially used to supply power to the charging pile module and the in-room load module, and the excess electric energy is stored in the battery management system through the energy router and finally stored in the energy storage battery pack; when the light is insufficient, according to the demand priorities of the charging pile module and the in-room load module, the energy storage battery pack is called in sequence to supply energy storage or switched to the mains power access module to supply mains power; when the remaining power SOC value of the energy storage battery pack detected by the battery management system is lower than 20% or the demand power of the charging pile module suddenly increases, the energy router is automatically triggered to call the mains power of the mains power access module for supplementary power supply and generate an operation and maintenance warning signal.

[0020] In one embodiment, the sunroom is provided with a sunshade opening and closing unit for controlling the rotation of the rain shield and a first sensing unit for detecting the sunlight intensity and orientation. The power consumption of the sunshade opening and closing unit and the first sensing unit belongs to the indoor load module and is electrically connected to the energy router. The energy router controls the sunshade opening and closing unit to drive the sunshade panel according to the power generation data of the photovoltaic module and the sunlight intensity and orientation data detected by the first sensing unit, so that the photovoltaic module faces the current sunlight orientation detected by the first sensing unit, for improving the power generation of the photovoltaic module.

[0021] The first sensing unit is arranged at the top of the sunroom and at a position higher than the rain shield.

[0022] In one embodiment, a rainwater collection unit and an air pump unit are provided at the top of the sunroom. The rainwater collection unit collects and stores rainwater in a water storage tank through the water guide groove of the rain shield when it rains. The rainwater collection unit is connected to a tap water supply unit. The power consumption of the rainwater collection unit, the tap water supply unit and the air pump unit belongs to the indoor load module and is electrically connected to the energy router. The energy router judges the dust coverage rate of the photovoltaic panels on the photovoltaic module according to the sunlight intensity data detected by the first sensing unit and the power generation data of the photovoltaic panels. When the dust coverage rate of the photovoltaic panels is greater than 5%, the energy router controls the rainwater collection unit and the air pump unit to mix water and compressed air to form a mixed water bubble, and spray the mixed water bubble towards the photovoltaic panels to clean the dust on the photovoltaic panels, so as to improve and maintain the power generation efficiency of the photovoltaic panels. When the energy router receives the data that the remaining water level of the rainwater stored in the rainwater collection unit is 10%, it controls the tap water supply unit to open and replenish water to the water storage tank.

[0023] A cleaning gun is further provided at the top of the sunroom. The cleaning gun is connected to the water outlet end of the rainwater collection unit and the air outlet end of the air pump unit, for mixing water and compressed air to form a mixed water bubble.

[0024] And the cleaning gun is arranged at the top of the sunroom and at a position higher than the rain shield.

[0025] In one embodiment, the energy storage module further includes a fire protection unit. The sensing end of the fire protection unit is electrically connected to the battery management system, for obtaining the thermal management data of the energy storage battery pack and receiving electric energy. The fire protection agent spraying end of the fire protection unit is internally communicated with the energy storage battery pack. When the sensing end of the fire protection unit receives the feedback from the battery management system that thermal runaway occurs inside the energy storage battery pack, the fire protection agent spraying end of the fire protection unit sprays fire protection agent into the energy storage battery pack for extinguishing fire, for cutting off or reducing the risk of thermal runaway of the energy storage battery pack.

[0026] A control method is also provided, including the following steps: S1. Initialization of the integrated photovoltaic energy storage charging sunroom system: The energy router performs self-check on the device interfaces, checks the connection status, and establishes communication links with the photovoltaic module, energy storage module, charging pile module, and in-room load module;

[0027] S2. Implement data acquisition: Synchronously obtain the photovoltaic power generation P pv obtained from the photovoltaic module, the remaining power SOC and the power supply P Battery obtained from the energy storage module, the required power P EV obtained from charging through the charging pile module, and the total power consumption P Load of the in-room load module obtained from the in-room load module;

[0028] S3. Energy scheduling decision:

[0029] If P pv ≥ (P EV + P Load ), execute the self-use mode of self-generated power. The energy router preferentially schedules power supply for the charging pile module and the in-room load module, and stores the remaining electric energy in the energy storage battery pack of the energy storage module;

[0030] If P pv < (P EV + P Load ), and the SOC of the energy storage module ≥ 40%, start the energy storage discharge mode, and allocate the combined power supply of the energy storage and photovoltaic according to a preset ratio;

[0031] If P pv + P Battery < (P EV + P Load ), switch to the mains hybrid power supply mode, and dynamically allocate the hybrid power supply ratio of the photovoltaic module, energy storage module, and mains access module according to the power supply power through the hybrid power supply ratio algorithm;

[0032] S3.1. In the mains hybrid power supply mode, the formula for calculating and quantifying the mains supplement in the hybrid power supply ratio algorithm is: P G = max(0, (P EV + P Load ) - (P pv + η·P Battery ))

[0033] Where η is the energy storage discharge efficiency coefficient (0.9 ≤ η ≤ 0.95), and P G is the mains power to be supplemented;

[0034] S3.2. When it is detected that the photovoltaic power generation of the photovoltaic module fluctuates by more than ±30% within 10 minutes, automatically switch to the energy storage discharge mode and store the photovoltaic power generation of the photovoltaic module in the energy storage module;

[0035] S3.3. When the charging interface of the charging pile module is disconnected, the energy router automatically redistributes to the in-room load module or the energy storage module within 5 seconds;

[0036] S3.4. The energy router is connected with an active power filter to suppress the harmonics of the power supply and control the THDu of the output electric energy < 3%;

[0037] S4. Dynamic grid connection / disconnection adjustment: The energy router controls the opening and closing of the relays in the relay switch array group through the output execution module to adjust the grid connection / disconnection status of the photovoltaic module, the energy storage module, the charging pile module, and the mains access module in real time;

[0038] S4.1. In the self-use mode, when the energy storage in the energy storage battery pack of the energy storage module reaches SOC > 95%, the energy router incorporates the excess electric energy into the mains network through the mains access module;

[0039] S4.2. When the mains network is powered off and the energy router detects that the mains access module cannot supply power, disconnect the mains access module and the charging pile module from the grid, and call the photovoltaic module and the energy storage module to connect to the grid first to ensure power supply to the in-room load module;

[0040] S5. User network interaction: The energy router uploads the power consumption data to the cloud database through the interconnection interface in a wired or wireless networking manner. The user can query the real-time energy consumption of the charging pile module and the in-room load module, remotely start and stop the integrated solar energy storage charging sunroom system, and pay the mains electricity bill online through the mobile terminal.

[0041] The beneficial effects of the present invention are as follows:

[0042] An integrated solar energy storage charging sunroom system provided by this technical solution, in combination with the control method implemented based on the integrated solar energy storage charging sunroom system, has the following advantages:

[0043] (1) Improve energy utilization efficiency: By highly integrating the photovoltaic module with the energy storage module, the charging pile module, and the in-room load module, give priority to self-use when the sun is sufficient, and store the surplus electric energy in the energy storage module, which can significantly improve the comprehensive utilization rate of the photovoltaic system.

[0044] (2) Enhance power supply stability: During periods of insufficient light or at night, the system can, according to the scheduling strategy of the energy router, give priority to discharging energy from the energy storage module or jointly supplying power by the photovoltaic module and the energy storage module; when the energy storage is insufficient, automatically connect to the mains to participate in power supply, effectively solving the shortcomings of traditional photovoltaic sunrooms in power supply continuity and stability.

[0045] (3) Intelligent scheduling and control: By collecting multi-module data through the energy router, performing intelligent analysis and output control, dynamic energy distribution for the charging pile module and the electrical load module in the room is achieved, enabling the power supply of the system to have higher adaptability and intelligence levels, and enhancing the user experience.

[0046] (4) Optimization of space utilization: The energy storage module and the charging pile module are installed on the ground beside the door of the sunroom. The photovoltaic module, the energy router, and the mains access module functional components are respectively installed on the roof and the wall, and are reasonably integrated into the sunroom structure. In particular, the design of the adjustable-angle rain shield combines functions of lighting, power generation, and space saving, solving the problems of large volume and much space occupation of the energy storage device.

[0047] (5) Bidirectional communication and remote control: Connect to the user terminal through the communication module. The user can monitor the electricity usage in real time, achieve remote control and energy consumption query, and enhance the intelligence and informatization levels of the system.

[0048] (6) Achieving multi-energy coordinated operation: The system has three power supply paths, namely photovoltaic power generation, energy storage battery pack, and mains electricity, and performs intelligent switching under different operating scenarios to ensure the load electricity consumption of the sunroom throughout the day and the charging operation of the charging pile module.

[0049] In summary, the present invention has significant advantages in terms of power supply continuity, energy utilization efficiency, intelligent control, and system integration, and is particularly suitable for the popularization and application in the fields of new energy smart home, green building, etc. Description of the Drawings

[0050] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for the implementation will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0051] Figure 1 It is a schematic structural diagram of each module of the integrated photovoltaic energy storage and charging sunroom system according to the first embodiment of the present invention;

[0052] Figure 2 It is a schematic structural diagram of the sunshade opening and closing unit and the first sensing unit accessing the room load module according to the first embodiment of the present invention;

[0053] Figure 3 It is a schematic structural diagram of each module of the integrated photovoltaic energy storage and charging sunroom system according to the second embodiment of the present invention;

[0054] Figure 4It is a schematic structural diagram of each module of the integrated solar energy storage and charging sunroom system according to the third embodiment of the present invention. Detailed implementation manners

[0055] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0056] Currently, photovoltaic sunrooms mainly install solar panels on the roof or facade to convert solar energy into electrical energy for indoor lighting, air conditioners and other equipment. However, traditional photovoltaic sunrooms have the following problems: First, photovoltaic power generation is intermittent and unstable, greatly affected by weather and day-night changes, and it is difficult to achieve continuous and stable power supply. Second, there is a lack of an effective energy storage system, resulting in the inability to store excess electrical energy and causing energy waste. Third, the function of charging electric vehicles is not integrated, unable to meet the charging needs of users with new energy vehicles. In addition, there is still room for improvement in the integration level, intelligent level and user experience of existing integrated solar energy storage and charging systems. For example, some systems do not fully consider the architectural aesthetics and space utilization rate in design, and the energy storage equipment occupies a large space, affecting the building layout; at the same time, the intelligent level of the energy management system is limited and cannot dynamically adjust the energy distribution strategy according to user needs and energy prices.

[0057] In view of this, a integrated solar energy storage and charging sunroom system and a control method are provided in the detailed implementation manners. The system includes an openable sunroom structure, an adjustable-angle photovoltaic module laid on a rain shield, an energy storage module for storing excess electrical energy, a charging pile module for charging electric vehicles, an in-room load module, a mains access module and an energy router; the energy router includes a data acquisition input, a logic control, an output execution and a communication module, which can collect the power consumption data of each module in real time, formulate an energy dispatching strategy, and dynamically adjust the energy path through a relay switch array group to realize the switching between photovoltaic power generation, energy storage, charging pile, load and mains power supply; through the interconnection interface, the user terminal is accessed to realize remote monitoring, control and energy consumption query; so that the integrated solar energy storage and charging sunroom system can effectively solve the technical problems of unstable power supply, low electrical energy utilization rate and low integration level existing in existing photovoltaic sunrooms, and is applicable to sunroom buildings and new energy usage scenarios.

[0058] The first embodiment of the integrated solar energy storage and charging sunroom system is as Figure 1As shown, it includes a sunroom, where the rain shield on the top of the sunroom can be rotated to open and close; a photovoltaic module, which is laid on the rain shield and adjusts the angle towards the sun as the rain shield rotates; a energy storage module, including an energy storage battery pack and a battery management system, which is used to store the excess electric energy of the photovoltaic module and release electric energy to the load when the photovoltaic power supply is insufficient; a charging pile module and an in-room load module; the in-room load module is the electrical equipment in the sunroom; a mains access module, which is used to switch to grid power supply when the output electric energy supply of the photovoltaic module and the energy storage module is insufficient; and an energy router, including a data acquisition input module, which is used to collect the power consumption data of the photovoltaic module, the energy storage module, the charging pile module, the in-room load module and the mains access module in real time; a logic control module, which dynamically generates an energy scheduling strategy according to the collected power consumption data and controls the power flow direction; an output execution module is provided with a relay switch array group for adjusting the electrical connection paths of the photovoltaic module, the energy storage module, the charging pile module, the in-room load module and the mains access module, for the interconnection and interoperability of photovoltaic, energy storage, charging pile, load and mains; a communication module, which provides two-way real-time communication for the photovoltaic module, the energy storage module, the charging pile module and the energy router, and is provided with an interconnection interface for data interaction with the user terminal; the charging pile module is used to charge electric vehicles and send a charging demand signal to the energy router.

[0059] Regarding the power consumption data obtained by the above data acquisition input module, specifically, the power consumption data collected by the data acquisition input module includes the power generation power of the photovoltaic module, the remaining power and power supply power of the energy storage module, the demand power of the charging pile module, the total load power consumption of the in-room load module and the mains power of the mains access module.

[0060] The energy scheduling strategy of the above logic control module is: when the light is sufficient, the photovoltaic module is preferentially used to supply power to the charging pile module and the in-room load module, and the excess electric energy is stored in the battery management system through the energy router and finally stored in the energy storage battery pack.

[0061] When the light is insufficient, according to the demand priorities of the charging pile module and the in-room load module, the energy storage battery pack is called in sequence to supply energy storage or switch to the mains access module to supply mains power.

[0062] When the remaining power SOC value of the energy storage battery pack is detected by the battery management system to be lower than 20% or the demand power of the charging pile module suddenly increases, the energy router is automatically triggered to call the mains power of the mains access module for supplementary power supply and generate an operation and maintenance warning signal.

[0063] The integrated photovoltaic, energy storage and charging sunroom system of this technical solution, combined with the control method implemented based on the integrated photovoltaic, energy storage and charging sunroom system, has the following advantages:

[0064] Improve energy utilization efficiency: By highly integrating photovoltaic modules with energy storage modules, charging pile modules, and in-room load modules, when sunlight is sufficient, self-use is prioritized, and surplus electric energy is stored in the energy storage module, which can significantly improve the comprehensive utilization rate of the photovoltaic system.

[0065] Enhance power supply stability: During periods of insufficient light or at night, the system can, according to the scheduling strategy of the energy router, prioritize discharging energy from the energy storage module or jointly powering by the photovoltaic module and the energy storage module; when the energy storage is insufficient, it automatically connects to the mains power to participate in power supply, effectively solving the shortcomings of traditional photovoltaic sunrooms in terms of power supply continuity and stability.

[0066] Intelligent scheduling and control: By collecting data from multiple modules, intelligent analysis, and output control through the energy router, dynamic energy distribution of the charging pile module and the in-room load module's power-consuming modules is achieved, enabling the system's power supply to have higher adaptability and intelligence levels, and enhancing the user experience.

[0067] Optimize space utilization: Install the energy storage module and the charging pile module on the ground beside the door of the sunroom, and install the photovoltaic module, energy router, and mains power access module functional components on the roof and walls respectively, reasonably integrated into the sunroom structure. In particular, the adjustable-angle rain shield design combines lighting, power generation, and space-saving functions, solving the problems of large volume and much space occupation of energy storage equipment.

[0068] Bidirectional communication and remote control: Connect to the user terminal through the communication module, and users can monitor the electricity usage situation in real time, achieve remote control and energy consumption query, and enhance the intelligence and informatization levels of the system.

[0069] Achieve multi-energy coordinated operation: The system has three power supply paths of photovoltaic power generation, energy storage battery packs, and mains power, and intelligently switches under different operating scenarios to ensure the load power consumption of the sunroom throughout the day and the charging operation of the charging pile module.

[0070] Regarding the specific connection settings of the above-mentioned photovoltaic module, energy storage module, charging pile module, in-room load module, energy router, and mains power access module, this embodiment is as Figure 1 shown,

[0071] The energy storage battery pack is electrically connected to the battery management system; the acquisition input module is electrically connected to the photovoltaic module, battery management system, charging pile module, in-room load module, and mains power access module; the communication module is electrically connected to the acquisition input module and output execution module of the photovoltaic module, battery management system, charging pile module, and energy router; the output execution module is electrically connected to the photovoltaic module, battery management system, charging pile module, in-room load module, and mains power access module.

[0072] When in application, the acquisition input module is electrically communicatively connected to the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains access module; the communication module is electrically communicatively connected to the acquisition input module and the output execution module of the photovoltaic module, the battery management system, the charging pile module, and the energy router.

[0073] The energy router is provided with device interfaces, which are used to connect and dock the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains access module; when the modules are connected to the device interfaces, the energy router automatically identifies and matches the module types, power parameters, and communication protocols of the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains access module; according to the identified module types connected, the device interfaces dynamically switch the energy path to electrical input or electrical output through the IGBT devices provided inside the energy router.

[0074] The device interfaces are communicatively connected to the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains access module through Modbus-TCP and CAN bus, so that the energy router can obtain the electrical parameters of the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains access module at a transmission delay lower than 100 ms.

[0075] When in application, the main power lines of the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains access module are all connected to the relay switch array group of the output execution module, and multiple relays in the relay switch array group are respectively electrically connected to multiple device interfaces.

[0076] The main power lines and Modbus-TCP and CAN bus communication connection lines are integrated on the connection heads of the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains access module connected to the device interfaces.

[0077] A photovoltaic inverter is integrated in the photovoltaic module, and a storage output inverter is also integrated in the battery management system of the energy storage module. The electric energy output from the photovoltaic module and the energy storage module to the energy router is converted into alternating current with the same frequency as the mains electricity, and then the energy router uniformly schedules the electric energy input from the photovoltaic module, the energy storage module, and the mains access module.

[0078] As one of the optional implementation manners

[0079] Regarding the rotation and opening / closing structure of the above rain shield and the structure for the photovoltaic module to adjust the orientation towards the sun as the rain shield rotates, in this embodiment Figure 2 As shown, the sunroom is provided with a sunshade opening / closing unit for controlling the rotation of the rain shield and a first sensing unit for detecting the sunlight intensity and direction. The power consumption of the sunshade opening / closing unit and the first sensing unit belongs to the in-room load module and is electrically connected to the energy router.

[0080] Based on the power generation data of the photovoltaic module and the sunlight intensity and azimuth data detected by the first sensing unit, the energy router controls the sunshade opening and closing unit to drive the sunshade board, so that the photovoltaic module faces the current sunlight azimuth detected by the first sensing unit, which is used to increase the power generation of the photovoltaic module.

[0081] During application, the first sensing unit is arranged on the top of the sunroom and at a position higher than the rain shield.

[0082] The second embodiment of the integrated solar energy storage and charging sunroom system is as Figure 3 shown. The difference between this embodiment and the first embodiment is that a rainwater collection unit and an air pump unit are provided on the top of the sunroom; the rainwater collection unit collects and stores rainwater in the water storage tank through the water guide groove of the rain shield when it rains; a tap water supply unit is connected to the rainwater collection unit; the electricity consumption of the rainwater collection unit, the tap water supply unit and the air pump unit belongs to the in-room load module and is electrically connected to the energy router.

[0083] The energy router judges the dust coverage rate of the photovoltaic panels on the photovoltaic module according to the sunlight intensity data detected by the first sensing unit and the power generation data of the photovoltaic panels; when the dust coverage rate of the photovoltaic panels is greater than 5%, the energy router controls the rainwater collection unit and the air pump unit to mix water and compressed air to form mixed water bubbles, and spray the mixed water bubbles towards the photovoltaic panels to clean the dust on the photovoltaic panels, so as to improve and maintain the power generation efficiency of the photovoltaic panels; when the energy router receives the data that the remaining rainwater level stored in the rainwater collection unit is 10%, it controls the tap water supply unit to open and replenish water to the water storage tank.

[0084] During application, a cleaning gun is also provided on the top of the sunroom. The cleaning gun is connected to the water outlet end of the rainwater collection unit and the air outlet end of the air pump unit, and is used to mix water and compressed air to form mixed water bubbles. And the cleaning gun is arranged on the top of the sunroom and at a position higher than the rain shield.

[0085] The third embodiment of the integrated solar energy storage and charging sunroom system is as Figure 4 shown. The difference between this embodiment and the first embodiment is that the energy storage module further includes a fire protection unit; the sensing end of the fire protection unit is electrically connected to the battery management system, and is used to obtain the thermal management data of the energy storage battery pack and receive electric energy; the fire protection agent spraying end of the fire protection unit is internally connected to the energy storage battery pack.

[0086] During application, when the sensing end of the fire protection unit receives the feedback from the battery management system that thermal runaway occurs inside the energy storage battery pack, the fire protection agent spraying end of the fire protection unit sprays fire protection agent into the energy storage battery pack to extinguish the fire, which is used to cut off or reduce the risk of thermal runaway of the energy storage battery pack.

[0087] Based on the above embodiments of the integrated solar energy storage and charging greenhouse system, a control method is provided, including the following steps: S1. Initialization of the integrated solar energy storage and charging greenhouse system: The energy router performs self-check on the device interfaces, checks the connection status, and establishes communication links with the photovoltaic module, energy storage module, charging pile module, and in-room load module;

[0088] S2. Implement data collection: Synchronously obtain the photovoltaic power generation P obtained from the photovoltaic module pv , the remaining power SOC and power supply P obtained from the energy storage module Battery , the required power P obtained from charging through the charging pile module EV and the total load power consumption P obtained from the in-room load module Load ;

[0089] S3. Energy scheduling decision:

[0090] If P pv ≥(P EV +P Load ), execute the self-use mode, and the energy router preferentially schedules power supply for the charging pile module and the in-room load module, and stores the remaining electric energy in the energy storage battery pack of the energy storage module;

[0091] If P pv <(P EV +P Load ) and the SOC of the energy storage module ≥ 40%, start the energy storage discharge mode, and allocate the combined power supply of the energy storage and photovoltaic according to a preset ratio;

[0092] If P pv +P Battery <(P EV +P Load ), switch to the mains hybrid power supply mode, and dynamically allocate the hybrid power supply ratio of the photovoltaic module, energy storage module, and mains access module according to the power supply power through the hybrid power supply ratio algorithm;

[0093] S3.1. In the mains hybrid power supply mode, the formula for calculating and quantifying the mains supplement in the hybrid power supply ratio algorithm is: P G =max(0, (P EV +P Load )-(P pv +η·P Battery ))

[0094] where η is the energy storage discharge efficiency coefficient (0.9 ≤ η ≤ 0.95), and P G is the mains power to be supplemented;

[0095] S3.2. When it is detected that the photovoltaic power generation of the photovoltaic module fluctuates by more than ±30% within 10 minutes, automatically switch to the energy storage discharge mode and store the photovoltaic power generation of the photovoltaic module in the energy storage module;

[0096] S3.3. When the charging interface of the charging pile module is disconnected, the energy router automatically re - distributes to the in - room load module or the energy storage module within 5 seconds;

[0097] S3.4. The energy router is connected with an active power filter to suppress the harmonics of the power supply and control the THDu of the output electric energy < 3%;

[0098] S4. Dynamic grid connection / disconnection adjustment: The energy router controls the opening and closing of the relays in the relay switch array group through the output execution module, and adjusts the grid - connected / off - grid status of the photovoltaic module, energy storage module, charging pile module and mains access module in real time;

[0099] S4.1. If in the self - consumption mode, when the energy storage in the energy storage battery pack of the energy storage module reaches SOC > 95%, the energy router incorporates the excess electric energy into the mains network through the mains access module;

[0100] S4.2. When the mains network is powered off and the energy router detects that the mains access module cannot supply power, it disconnects the mains access module and the charging pile module from the grid, and calls the photovoltaic module and the energy storage module to be grid - connected first to ensure the power supply to the in - room load module;

[0101] S5. User network interaction: The energy router uploads the power consumption data to the cloud database through the interconnection interface in a wired or wireless network connection way. The user can query the real - time energy consumption of the charging pile module and the in - room load module, remotely start / stop the integrated photovoltaic - energy storage - charging sunroom system and pay the mains electricity bill online through the mobile terminal.

[0102] When applied, this technical solution is based on the integrated photovoltaic - energy storage - charging sunroom system combined with the control method, which realizes the improvement of the power supply stability of the integrated photovoltaic - energy storage - charging sunroom, higher electric energy utilization rate, more convenient operation and safer setting. Compared with the existing technology, specifically:

[0103] Improvement of power supply stability: Through the dynamic scheduling of electric energy by the energy router, the photovoltaic power generation, energy storage capacity and load demand are matched in real time, solving the problem of power supply fluctuation caused by photovoltaic intermittency.

[0104] When the light is insufficient, the energy storage is preferentially called for power supply, and combined with the seamless switching mechanism of the mains, it ensures the continuous and stable operation of the charging pile and the in - room load, avoiding the power - off risk caused by insufficient energy storage capacity or scheduling delay in the traditional system, thus avoiding the problem of power supply stability defects and improving the power supply stability.

[0105] The energy router integrates an active power filter, which can control the total harmonic distortion of the output voltage (THDu) within 3%, effectively protecting sensitive electrical equipment and avoiding the problem of electrical appliance damage.

[0106] Improved power utilization efficiency: The photovoltaic panels of the photovoltaic module adopt a structure with adjustable angles along with the rain shield, enabling the photovoltaic panels to receive sunlight for a longer time, increasing the daily power generation efficiency by 15%-20%, and reducing the photovoltaic curtailment rate.

[0107] After the volume of the energy storage module is reduced by 30%-40%, it is installed in the sunroom, and the charge and discharge depth of the energy storage battery pack is precisely controlled through the battery management system, extending the battery life of the energy storage battery pack to more than 10 years and reducing the maintenance cost over the entire life cycle.

[0108] Improved system integration: The energy router automatically identifies the connected modules through the device interface and realizes the rapid networking of photovoltaic, energy storage, charging piles, in-room loads, and mains access through a standardized communication protocol, greatly reducing the system deployment time, thereby reducing the installation cost and commissioning cost of the integrated solar energy storage charging sunroom system.

[0109] Through the bus dual-channel to achieve real-time communication technology, the energy router can respond to changes in device status within 100 ms. For example, when the charging pile is disconnected, it can quickly adjust the power supply structure of the system according to the off-grid charging pile module, ensuring stable power supply, reducing power consumption, and improving power utilization efficiency.

[0110] Users can remotely monitor energy consumption data, set electricity consumption priorities, and control the sunshade opening and closing unit, rainwater collection unit, tap water supply unit, and air pump unit to perform linkage self-cleaning on the photovoltaic panels of the photovoltaic module through a mobile terminal, further improving the operation and maintenance efficiency.

[0111] Adaptive improvement of the photovoltaic module and charging pile module: The rainwater collection unit, tap water supply unit, and air pump unit for cleaning the photovoltaic module use a mixture of rainwater collection and air pump injection for cleaning, which can remove the dust on the surface of the photovoltaic panel without a large amount of external water source, controlling the attenuation rate of the photoelectric conversion efficiency of the photovoltaic panel within 2% per year.

[0112] Improved safety of the energy storage module: The energy storage module uses high-energy density battery cells to form an energy storage battery pack, a compact fire protection unit, and a battery management system to perform thermal management on the energy storage battery pack, reducing the occupied space of the energy storage module in the sunroom, thus greatly improving the adaptability of the energy storage module to the limited space scenario of the sunroom.

[0113] By establishing a safety protection mechanism through the fire protection unit, the explosion and combustion rate of the integrated solar energy storage charging sunroom system is reduced by 90%, and the fire protection unit can ensure the safety of the sunroom under extreme conditions for the energy storage module.

[0114] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described.

Claims

1. A photovoltaic-storage-charging integrated sunroom system and control method, characterized in that it includes a sunroom, and the rain shield on the top of the sunroom can be rotated to open and close; and a photovoltaic module, which is laid on the rain shield and adjusts the angle facing the sun as the rain shield rotates; and a storage module, including a storage battery pack and a battery management system, which is used to store the excess electric energy of the photovoltaic module and release electric energy to the load when the photovoltaic power supply is insufficient; and a charging pile module and an in-room load module; the in-room load module is the electrical equipment in the sunroom; and a mains access module, which is used to switch to grid power supply when the output electric energy of the photovoltaic module and the storage module is insufficient; and an energy router, including a collection input module, which is used to collect the electricity consumption data of the photovoltaic module, the storage module, the charging pile module, the in-room load module and the mains access module in real time; a logic control module, which dynamically generates an energy scheduling strategy according to the collected electricity consumption data and controls the flow direction of electric energy; the output execution module is provided with a relay switch array group for adjusting the electrical connection paths of the photovoltaic module, the storage module, the charging pile module, the in-room load module and the mains access module, and is used for the interconnection and interoperability of photovoltaic, energy storage, charging piles, loads and the mains; a communication module, which provides two-way real-time communication between the photovoltaic module, the storage module, the charging pile module and the energy router, and is provided with an interconnection interface for data interaction with the user terminal; the charging pile module is used to charge an electric vehicle and send a charging demand signal to the energy router.

2. The photovoltaic-storage-charging integrated sunroom system according to claim 1, characterized in that the electricity consumption data collected by the collection input module includes the power generation power of the photovoltaic module, the remaining power and supply power of the storage module, the demand power of the charging pile module, the total load power consumption of the in-room load module and the mains power of the mains access module.

3. The photovoltaic-storage-charging integrated sunroom system according to claim 1, characterized in that the storage battery pack is electrically connected to the battery management system; the collection input module is electrically connected to the photovoltaic module, the battery management system, the charging pile module, the in-room load module and the mains access module; the communication module is electrically connected to the photovoltaic module, the battery management system, the charging pile module, and the collection input module and output execution module of the energy router; the output execution module is electrically connected to the photovoltaic module, the battery management system, the charging pile module, the in-room load module and the mains access module.

4. The photovoltaic-storage-charging integrated sunroom system according to claim 3, characterized in that the energy router is provided with a device interface, and the device interface is used to connect and dock the photovoltaic module, the battery management system, the charging pile module, the in-room load module and the mains access module; When accessing the device interface module, the energy router automatically identifies and matches the module types, power parameters, and communication protocols of the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains access module; According to the identified module type accessed by the device interface, the energy path is dynamically switched to electrical input or electrical output through the IGBT device installed in the energy router.

5. The integrated photovoltaic energy storage charging sunroom system according to claim 4, characterized in that, The device interface is communicatively connected to the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains access module through Modbus-TCP and CAN bus, so that the energy router can obtain the electrical parameters of the photovoltaic module, the battery management system, the charging pile module, the in-room load module, and the mains access module at a transmission delay lower than 100 ms.

6. The integrated photovoltaic energy storage charging sunroom system according to claim 5, characterized in that, The energy scheduling strategy of the logic control module is as follows: When the sunlight is sufficient, the photovoltaic module is preferentially used to supply power to the charging pile module and the in-room load module, and the excess electric energy is stored in the battery management system through the energy router and finally stored in the energy storage battery pack; When the sunlight is insufficient, according to the demand priorities of the charging pile module and the in-room load module, the energy storage battery pack is sequentially called to supply energy storage or switched to the mains access module to supply mains power; When the remaining battery charge (SOC) value of the energy storage battery pack detected by the battery management system is lower than 20% or the demand power of the charging pile module suddenly increases, the energy router is automatically triggered to call the mains power of the mains access module for supplementary power supply and generate an operation and maintenance warning signal.

7. The integrated photovoltaic energy storage charging sunroom system according to claim 1, characterized in that, The sunroom is provided with a sunshade opening and closing unit for controlling the rotation of the rain shield and a first sensing unit for detecting the sunlight intensity and azimuth. The power consumption of the sunshade opening and closing unit and the first sensing unit belongs to the in-room load module and is electrically connected to the energy router; The energy router controls the sunshade opening and closing unit to drive the sunshade according to the power generation data of the photovoltaic module and the sunlight intensity and azimuth data detected by the first sensing unit, so that the photovoltaic module faces the current sunlight azimuth detected by the first sensing unit, which is used to increase the power generation of the photovoltaic module.

8. The integrated photovoltaic energy storage charging sunroom system according to claim 7, characterized in that, The top of the sunroom is provided with a rainwater collection unit and an air pump unit; the rainwater collection unit collects and stores rainwater in the water storage tank through the water guide groove of the rain shield when it rains; the rainwater collection unit is connected to a tap water supply unit; the power consumption of the rainwater collection unit, the tap water supply unit, and the air pump unit belongs to the in-room load module and is electrically connected to the energy router; The energy router determines the dust coverage rate of the photovoltaic panels on the photovoltaic module according to the sunlight intensity data detected by the first sensing unit and the power generation data of the photovoltaic panels. When the dust coverage rate of the photovoltaic panels is greater than 5%, the energy router controls the rainwater collection unit and the air pump unit to mix water and compressed air to form mixed water bubbles, and sprays the mixed water bubbles towards the photovoltaic panels to clean the dust on the photovoltaic panels, so as to improve and maintain the power generation efficiency of the photovoltaic panels. When the energy router receives the data that the remaining rainwater level stored in the rainwater collection unit is 10%, it controls the tap water supply unit to open and replenish water to the water storage tank.

9. The integrated photovoltaic energy storage charging sunroom system according to claim 8, wherein the energy storage module further includes a fire protection unit; the sensing end of the fire protection unit is electrically connected to the battery management system for acquiring the thermal management data of the energy storage battery pack and receiving electric energy; the fire protection agent spraying end of the fire protection unit is communicated with the inside of the energy storage battery pack; when the sensing end of the fire protection unit receives that the battery management system feedbacks that thermal runaway occurs inside the energy storage battery pack, the fire protection agent spraying end of the fire protection unit sprays fire protection agent into the inside of the energy storage battery pack to extinguish the fire, so as to cut off or reduce the risk of thermal runaway of the energy storage battery pack.

10. A control method for an integrated photovoltaic energy storage charging sunlight room system according to any one of claims 1 to 9, characterized in that, including the following steps S1. Initialization of the integrated photovoltaic energy storage charging sunroom system: The energy router performs self-check on the device interfaces, checks the connection status, and establishes communication links with the photovoltaic module, the energy storage module, the charging pile module, and the in-room load module; S2. Implement data collection: Synchronously obtain the photovoltaic power generation P obtained from the photovoltaic module pv , the remaining power SOC and power supply P obtained from the energy storage module Battery , the required power P obtained from charging through the charging pile module EV and the total load power consumption P obtained from the in-room load module Load ; S3. Energy scheduling decision If P pv ≥ (P EV + P Load ), the self-use mode is executed. The energy router preferentially schedules power supply for the charging pile module and the in-room load module, and the remaining electric energy is stored in the energy storage battery pack of the energy storage module; If P pv <(P EV +P Load ) and the SOC of the energy storage module ≥ 40%, start the energy storage discharge mode, and distribute the combined power supply of energy storage and photovoltaic according to a preset ratio; If P pv + P Battery <(P EV + P Load ), switch to the mains hybrid power supply mode, and dynamically allocate the hybrid power supply ratio of the photovoltaic module, energy storage module, and mains access module according to the power supply power through the hybrid power supply ratio algorithm; S3.

1. In the mains hybrid power supply mode, the formula for calculating the quantization of mains power supplement in the hybrid power supply ratio algorithm is: P G = max(0, (P EV + P Load ) - (P pv + η · P Battery )) Among them, η is the energy storage discharge efficiency coefficient (0.9 ≤ η ≤ 0.95), and P G is the urban power to be supplemented; S3.

2. When it is detected that the power generation power of the photovoltaic module fluctuates by more than ±30% within 10 minutes, the energy storage discharge mode is automatically switched, and the power generation of the photovoltaic module is stored in the energy storage module; S3.

3. When the charging interface of the charging pile module is disconnected, the energy router automatically reallocates to the in-room load module or the energy storage module within 5 seconds; S3.

4. The energy router is connected with an active power filter to suppress the harmonics of the power supply and control the THDu of the output electric energy < 3%; S4. Dynamic grid connection and disconnection adjustment: The energy router controls the opening and closing of the relays in the relay switch array group through the output execution module, and adjusts the grid connection / off-grid status of the photovoltaic module, the energy storage module, the charging pile module, and the mains access module in real time; S4.

1. If in the self-use mode, when the energy storage in the energy storage battery pack of the energy storage module reaches SOC > 95%, the energy router incorporates the excess electric energy into the mains power grid through the mains access module; S4.

2. When the mains power grid is powered off and the energy router detects that the mains access module cannot supply power, the mains access module and the charging pile module are disconnected from the grid, and the photovoltaic module and the energy storage module are called to be connected to the grid preferentially to ensure the power supply to the in-room load module; S5. User network interaction: The energy router uploads the electric energy consumption data to the cloud database in a wired or wireless network connection manner through the interconnection interface, and the user queries the real-time energy consumption of the charging pile module and the in-room load module, remotely starts and stops the integrated photovoltaic energy storage charging sunroom system, and pays the mains electricity bill online through the mobile terminal.

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