Concentrated charging system of photovoltaic energy storage micro-grid

Abstract

The invention discloses a centralized charging system of a photovoltaic energy storage micro-grid, and relates to the technical field of photovoltaic charging. The centralized charging system of the photovoltaic energy storage microgrid comprises a photovoltaic module array, an energy storage device, a charging management module, a plurality of charging ports and a monitoring module, the photovoltaic module array is used for converting solar energy into electric energy; the energy storage device is connected with the photovoltaic module array and is used for storing redundant electric energy; the charging management module is connected with the photovoltaic module array, the energy storage device and the plurality of charging ports. The charging management module is configured to intelligently distribute electric energy to each charging port according to real-time monitoring data. By monitoring and analyzing the power generation data, the energy storage data and the charging demand data in real time, the charging management module can dynamically adjust an electric energy distribution strategy according to actual conditions, customized charging schemes are provided for different charging devices, the energy utilization efficiency is improved, diversified charging demands of users are met, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic charging technology, and in particular to a centralized charging system for a photovoltaic energy storage microgrid. Background Art

[0002] With the increasing awareness of environmental protection and the demand for renewable energy, the centralized charging system of photovoltaic energy storage microgrid has gradually become a hot spot for research and application. It uses solar photovoltaic panels to convert solar energy into electrical energy, stores excess electrical energy through energy storage devices, and provides centralized charging services for various devices when needed. It can not only reduce dependence on traditional fossil energy, but also improve energy utilization efficiency, with good economic and environmental benefits.

[0003] At present, there are still the following problems with the centralized charging system of photovoltaic energy storage microgrid:

[0004] 1. The charging strategy lacks flexibility and intelligence: The existing system usually adopts a relatively fixed charging strategy, which cannot be dynamically adjusted according to the real-time power generation situation, energy storage status and the needs of different charging equipment;

[0005] 2. Insufficient management of energy storage devices: The existing system does not manage energy storage devices in a sophisticated enough manner. On the one hand, due to individual differences, multiple energy storage units are prone to uneven power during the charging and discharging process, which will cause some energy storage units to age prematurely and shorten the service life of the entire energy storage device. On the other hand, the existing system lacks comprehensive monitoring and fault warning functions for energy storage devices, and is unable to detect potential problems with energy storage units in a timely manner. When a fault occurs, it may affect the normal operation of the entire charging system. Summary of the invention

[0006] The purpose of the present invention is to provide a centralized charging system for a photovoltaic energy storage microgrid, which solves the technical problems raised in the above background technology that the charging strategy of the existing centralized charging system for photovoltaic energy storage microgrid lacks flexibility and intelligence, and the energy storage device management is insufficient.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: A centralized charging system for a photovoltaic energy storage microgrid, comprising a photovoltaic component array, an energy storage device, a charging management module, a charging port, and a monitoring module, wherein a plurality of charging ports are provided;

[0008] The photovoltaic component array is used to convert solar energy into electrical energy;

[0009] The energy storage device is connected to the photovoltaic module array and is used to store excess electrical energy;

[0010] The charging management module is connected to the photovoltaic module array, the energy storage device and a plurality of charging ports, and the charging management module is configured to intelligently distribute electric energy to each charging port according to real-time monitoring data, and control the charging and discharging of the energy storage device;

[0011] Multiple charging ports are used to connect different types of devices to be charged;

[0012] The monitoring module is connected to the photovoltaic module array, the energy storage device and the charging port respectively, and is used to collect power generation data, energy storage data and charging demand data in real time, and transmit the data to the charging management module.

[0013] Preferably, the charging management module includes:

[0014] A data analysis unit receives data transmitted by the monitoring module and analyzes the power generation of the photovoltaic module array, the power of the energy storage device, and the charging demand of each charging port;

[0015] A strategy generating unit, which generates an electric energy distribution strategy and an energy storage device charging and discharging strategy based on the analysis result of the data analyzing unit;

[0016] The control execution unit controls the power transmission between the photovoltaic component array, the energy storage device and the charging port according to the strategy generated by the strategy generation unit.

[0017] Preferably, the monitoring module also includes an environmental parameter monitoring submodule for real-time monitoring of ambient temperature, light intensity and humidity. The environmental parameter monitoring submodule is connected to a charging management module, and the charging management module adjusts the working mode of the photovoltaic component array and the charging and discharging strategy of the energy storage device according to the environmental parameters.

[0018] Preferably, the charging port has an intelligent recognition function to automatically identify the type and charging requirements of the device to be charged, and the charging management module provides customized charging solutions for different types of devices to be charged according to the recognition results.

[0019] Preferably, the energy storage device is composed of multiple energy storage units, and the charging management module is configured to perform balanced management on each energy storage unit, and dynamically adjust the order and duration of participation in charging and discharging of each energy storage unit according to the real-time power and charging and discharging status of each energy storage unit.

[0020] Preferably, it also includes a communication module, which is connected to the charging management module and is used to realize communication between the centralized charging system and external equipment. The charging management module receives remote control instructions through the communication module and uploads system operation data.

[0021] Preferably, it also includes a fault diagnosis module, which is respectively connected to the photovoltaic component array, the energy storage device, the charging management module and the charging port, and is used to monitor the operating status of each part of the system in real time. When a fault is detected, a fault signal is sent to the charging management module, and the charging management module takes corresponding fault handling measures according to the fault signal.

[0022] Preferably, it also includes a backup power module, which is connected to the charging management module. When the photovoltaic component array and the energy storage device cannot meet the charging demand, the charging management module controls the backup power module to supply power to the charging port.

[0023] Compared with the related art, the centralized charging system of the photovoltaic energy storage microgrid provided by the present invention has the following beneficial effects:

[0024] 1. Intelligent and flexible charging strategy: By real-time monitoring and analysis of power generation data, energy storage data and charging demand data, the charging management module of the present invention can dynamically adjust the power distribution strategy according to actual conditions, provide customized charging solutions for different charging devices, improve energy utilization efficiency, meet users' diverse charging needs, and enhance user experience.

[0025] 2. Fine energy storage device management: Real-time monitoring and balanced management of multiple energy storage units of the energy storage device effectively solves the problem of uneven power of energy storage units, extends the overall service life of the energy storage device, and reduces the maintenance cost of the system. At the same time, the fault diagnosis module can timely detect potential problems of the energy storage device and take corresponding measures, improving the reliability and stability of the system.

[0026] 3. Good environmental adaptability: The environmental parameter monitoring submodule monitors the ambient temperature, light intensity, humidity and other parameters in real time. The charging management module adjusts the working mode of the photovoltaic module array and the charging and discharging strategy of the energy storage device according to these parameters, so that the system can better adapt to different environmental conditions and improve the system's power generation efficiency and operation stability.

[0027] 4. Convenient remote monitoring and management: The communication module realizes the communication between the system and external devices. Users can understand the operating status of the system in real time through remote devices, and remotely control and manage the system, which improves the management efficiency of the system and reduces the operation and maintenance costs.

[0028] 5. High reliability: The setting of the backup power module provides power support when the photovoltaic module array and energy storage device cannot meet the charging demand, ensuring that the charging needs of important equipment are met and improving the reliability and availability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1is a schematic diagram of a charging system of the present invention;

[0030] Figure 2 It is a schematic diagram of the charging management module of the present invention. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 2 , the present invention provides a technical solution: a centralized charging system for a photovoltaic energy storage microgrid, including a photovoltaic component array, an energy storage device, a charging management module, a charging port, and a monitoring module, wherein a plurality of charging ports are provided;

[0033] Photovoltaic arrays are used to convert solar energy into electricity;

[0034] The energy storage device is connected to the photovoltaic module array to store excess electrical energy;

[0035] The charging management module is connected to the photovoltaic module array, the energy storage device and the plurality of charging ports, and the charging management module is configured to intelligently distribute electric energy to each charging port according to real-time monitoring data, and control the charging and discharging of the energy storage device;

[0036] Multiple charging ports are used to connect different types of devices to be charged;

[0037] The monitoring module is connected to the photovoltaic module array, energy storage device and charging port respectively, and is used to collect power generation data, energy storage data and charging demand data in real time, and transmit the data to the charging management module.

[0038] In this implementation, the photovoltaic module array serves as the energy source for the entire centralized charging system. Through its efficient photoelectric conversion capability, it continuously converts solar energy into electrical energy, providing indispensable basic energy support for subsequent energy storage links and charging processes.

[0039] Among them, the charging management module includes:

[0040] A data analysis unit receives data transmitted by the monitoring module and analyzes the power generation of the photovoltaic module array, the power of the energy storage device, and the charging demand of each charging port;

[0041] A strategy generation unit, which generates an electric energy distribution strategy and an energy storage device charging and discharging strategy based on the analysis result of the data analysis unit;

[0042] The control execution unit controls the power transmission between the photovoltaic component array, the energy storage device and the charging port according to the strategy generated by the strategy generation unit.

[0043] In this implementation, the charging management module, as the core control unit of the system, realizes the intelligent and accurate distribution of electric energy and the reasonable control of the charging and discharging of the energy storage device through the coordinated work of the data analysis unit, the strategy generation unit and the control execution unit. This intelligent management method can dynamically adjust the system operation strategy according to the real-time power generation, energy storage and charging demand data, maximize the energy utilization efficiency, and ensure the stable and efficient operation of the system.

[0044] Among them, the monitoring module also includes an environmental parameter monitoring sub-module, which is used to monitor the ambient temperature, light intensity and humidity in real time. The environmental parameter monitoring sub-module is connected to the charging management module, and the charging management module adjusts the working mode of the photovoltaic module array and the charging and discharging strategy of the energy storage device according to the environmental parameters.

[0045] In this implementation, the environmental parameter monitoring submodule of the monitoring module plays an important role. Real-time monitoring of parameters such as ambient temperature, light intensity and humidity provides comprehensive environmental information for the charging management module. Based on these environmental parameters, the charging management module can flexibly adjust the working mode of the photovoltaic array and the charging and discharging strategy of the energy storage device, so that the system can better adapt to different environmental conditions and further improve the performance and stability of the system.

[0046] Among them, the charging port has an intelligent recognition function, which can automatically identify the type and charging requirements of the device to be charged. The charging management module provides customized charging solutions for different types of devices to be charged based on the recognition results.

[0047] In this implementation, the intelligent recognition function of the charging port greatly improves the applicability and flexibility of the centralized charging system. When different types of devices to be charged are connected to the charging port, the intelligent recognition function can quickly and accurately determine the type of device, such as a mobile phone, tablet computer, power tool, etc., as well as its required charging power, charging current and other charging demand parameters.

[0048] Based on these recognition results, the charging management module customizes a charging solution for each type of device to be charged according to pre-set algorithms and strategies. For some devices that are more sensitive to charging speed, such as mobile phones that support fast charging technology, the charging management module will reasonably allocate power to charge at a higher power while ensuring the safety of the device, thereby shortening the charging time; and for some precision devices that require higher charging stability, the charging management module will adjust the charging parameters and adopt a more stable charging method to avoid damage to the device due to current fluctuations.

[0049] Among them, the energy storage device is composed of multiple energy storage units, and the charging management module is configured to perform balanced management of each energy storage unit. According to the real-time power and charging and discharging status of each energy storage unit, the order and duration of their participation in charging and discharging are dynamically adjusted to balance the usage frequency and life of each energy storage unit.

[0050] In this implementation, the balanced management of each energy storage unit of the energy storage device effectively extends the overall service life of the energy storage device. The charging management module dynamically adjusts the order and duration of each energy storage unit's participation in charging and discharging according to the real-time power and charging and discharging status of each energy storage unit, making the use frequency of each energy storage unit more balanced, avoiding the problem of shortened life due to excessive use of some energy storage units, thereby reducing the system's maintenance cost and replacement frequency.

[0051] It also includes a communication module, which is connected to the charging management module and is used to realize communication between the centralized charging system and external equipment. The charging management module receives remote control instructions through the communication module and uploads system operation data.

[0052] In this implementation, the presence of the communication module enables the centralized charging system to have the ability of remote communication and monitoring. Through communication with external devices, the charging management module can receive remote control instructions, realize remote operation and management of the system, and facilitate system maintenance and upgrades. At the same time, the upload of system operation data also provides real-time operation information for managers, which helps to discover and solve potential problems in a timely manner.

[0053] It also includes a fault diagnosis module, which is respectively connected to the photovoltaic module array, energy storage device, charging management module and charging port, and is used to monitor the operating status of various parts of the system in real time. When a fault is detected, a fault signal is sent to the charging management module, and the charging management module takes corresponding fault handling measures according to the fault signal.

[0054] In this implementation, the fault diagnosis module monitors the operating status of each part of the system in real time. Once a fault is detected, a fault signal is quickly sent to the charging management module, which then takes corresponding fault handling measures to eliminate the fault in a timely manner and ensure the normal operation of the system. This fast-response fault handling mechanism improves the reliability and stability of the system and reduces downtime and losses caused by faults.

[0055] It also includes a backup power module, which is connected to the charging management module. When the photovoltaic module array and the energy storage device cannot meet the charging demand, the charging management module controls the backup power module to supply power to the charging port.

[0056] In this implementation, the backup power module provides additional protection for the entire centralized charging system. When the photovoltaic array and the energy storage device cannot meet the charging demand, the charging management module quickly starts the backup power module to supply power to the charging port, ensuring that the device to be charged can continue to charge, avoiding the inconvenience caused by energy supply interruption, and further improving the reliability and availability of the system.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The centralized charging system of photovoltaic energy storage microgrid is characterized by: It includes a photovoltaic component array, an energy storage device, a charging management module, a charging port, and a monitoring module, wherein a plurality of charging ports are provided; The photovoltaic module array is used to convert solar energy into electrical energy; The energy storage device is connected to the photovoltaic module array and is used to store excess electrical energy; The charging management module is connected to the photovoltaic module array, the energy storage device and a plurality of charging ports, and the charging management module is configured to intelligently distribute electric energy to each charging port according to real-time monitoring data, and control the charging and discharging of the energy storage device; Multiple charging ports are used to connect different types of devices to be charged; The monitoring module is connected to the photovoltaic module array, the energy storage device and the charging port respectively, and is used to collect power generation data, energy storage data and charging demand data in real time, and transmit the data to the charging management module.

2. The centralized charging system for photovoltaic energy storage microgrid according to claim 1 is characterized in that: The charging management module comprises: A data analysis unit receives data transmitted by the monitoring module and analyzes the power generation of the photovoltaic module array, the power of the energy storage device, and the charging demand of each charging port; A strategy generating unit, which generates an electric energy distribution strategy and an energy storage device charging and discharging strategy based on the analysis result of the data analyzing unit; The control execution unit controls the power transmission between the photovoltaic component array, the energy storage device and the charging port according to the strategy generated by the strategy generation unit.

3. The centralized charging system for photovoltaic energy storage microgrid according to claim 1 is characterized in that: The monitoring module also includes an environmental parameter monitoring submodule for real-time monitoring of ambient temperature, light intensity and humidity. The environmental parameter monitoring submodule is connected to a charging management module, which adjusts the working mode of the photovoltaic component array and the charging and discharging strategy of the energy storage device according to the environmental parameters.

4. The centralized charging system for photovoltaic energy storage microgrid according to claim 1 is characterized in that: The charging port has an intelligent recognition function, which automatically recognizes the type and charging requirements of the device to be charged. The charging management module provides customized charging solutions for different types of devices to be charged according to the recognition results.

5. The centralized charging system for photovoltaic energy storage microgrid according to claim 1 is characterized in that: The energy storage device is composed of multiple energy storage units, and the charging management module is configured to perform balanced management on each energy storage unit, and dynamically adjust the order and duration of participation in charging and discharging of each energy storage unit according to the real-time power and charging and discharging status of each energy storage unit.

6. The centralized charging system for photovoltaic energy storage microgrid according to claim 1, characterized in that: It also includes a communication module, which is connected to the charging management module and is used to realize communication between the centralized charging system and external equipment. The charging management module receives remote control instructions through the communication module and uploads system operation data.

7. The centralized charging system for photovoltaic energy storage microgrid according to claim 1, characterized in that: It also includes a fault diagnosis module, which is respectively connected to the photovoltaic component array, the energy storage device, the charging management module and the charging port, and is used to monitor the operating status of each part of the system in real time. When a fault is detected, a fault signal is sent to the charging management module, and the charging management module takes corresponding fault handling measures according to the fault signal.

8. The centralized charging system for photovoltaic energy storage microgrid according to claim 1, characterized in that: It also includes a backup power supply module, which is connected to the charging management module. When the photovoltaic component array and the energy storage device cannot meet the charging demand, the charging management module controls the backup power supply module to supply power to the charging port.

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