Intelligent photovoltaic energy storage system, energy storage method, storage medium and execution equipment

Abstract

The invention discloses an intelligent photovoltaic energy storage system, an energy storage method, a storage medium and execution equipment, the intelligent photovoltaic energy storage system comprises a power supply unit and an energy storage unit, the energy storage unit is used for storing electric energy leaked during the power generation peak of the power supply unit, and a switch unit is arranged between the power supply unit and the storage unit; the energy storage system further comprises a power generation monitoring unit and an energy storage monitoring unit, the power generation monitoring unit is used for detecting the power supply state and the load state of the power supply unit, and the energy storage monitoring unit is used for monitoring the operation state of the energy storage unit. The power generation monitoring unit and the energy storage monitoring unit are introduced, the power supply state and the load state of the power supply unit and the operation state of the energy storage unit are monitored in real time, on-off of the switch unit is intelligently controlled according to the monitoring result, and accurate storage and release of electric energy are achieved. The intelligent control mode can make full use of redundant electric energy at the photovoltaic power generation peak, improves the energy storage efficiency, flexibly adjusts the charging and discharging strategy of the energy storage unit according to the power grid demand, and enhances the flexibility and response speed of the system.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic energy storage technology, and in particular to an intelligent photovoltaic energy storage system, an energy storage method, a storage medium and an execution device. Background Art

[0002] With the continuous growth of global energy demand and the increasing awareness of environmental protection, the development and utilization of renewable energy has become an important way to solve the energy crisis and reduce environmental pollution. Photovoltaic power generation, as an important part of renewable energy, has attracted much attention due to its clean and renewable characteristics. However, photovoltaic power generation is greatly affected by weather conditions, and power generation is intermittent and unstable, which to a certain extent limits its widespread application. In order to overcome this problem, photovoltaic energy storage systems came into being, aiming to store excess electricity during the peak of photovoltaic power generation and release it when needed to balance the load of the power grid and improve energy utilization efficiency.

[0003] Traditional photovoltaic energy storage systems often have problems such as low intelligence, low energy storage efficiency, and high operation and maintenance costs. For example, the charge and discharge management of the energy storage unit is not sophisticated enough, and it cannot be flexibly adjusted according to the real-time status of the power supply unit; the monitoring methods of the energy storage unit are limited, and it is difficult to detect and handle potential faults in time; the control method of the switch unit is relatively simple, lacking remote control and intelligent decision-making capabilities. These problems not only affect the overall performance of the photovoltaic energy storage system, but also increase the system's operating risks and maintenance costs. Summary of the invention

[0004] 1. Technical issues to be resolved To solve the above problems, the present invention proposes an intelligent photovoltaic energy storage system, an energy storage method, a storage medium and an execution device, aiming to solve the problems in the prior art that the charging and discharging management of the energy storage unit is not sophisticated enough and cannot be flexibly adjusted according to the real-time status of the power supply unit; the monitoring means of the energy storage unit are limited, making it difficult to detect and handle potential faults in time; the control method of the switch unit is relatively single, and lacks remote control and intelligent decision-making capabilities.

[0005] (II) Technical solution An intelligent photovoltaic energy storage system of the present invention comprises: A power supply unit and an energy storage unit, wherein the energy storage unit is used to store the electric energy leaked by the power supply unit during the peak power generation period, and a switch unit is further provided between the power supply unit and the storage unit; The energy storage system further includes a power generation monitoring unit and an energy storage monitoring unit, wherein the power generation monitoring unit is used to detect the power supply state and load state of the power supply unit, and the energy storage monitoring unit is used to monitor the operating state of the energy storage unit; The power generation monitoring unit and the energy storage monitoring unit are both wirelessly connected to the switch unit, and the switch unit can control the energy storage unit to store electric energy according to the control signal sent by the power generation monitoring unit and the energy storage monitoring unit; The energy storage unit includes a battery management module and a battery pack consisting of a plurality of energy storage batteries, and the battery management module is used to detect and obtain operating parameters of the battery pack; The power supply unit is a substation, and the power generation monitoring unit includes a sensor for obtaining real-time electrical parameters of the substation and a first control device, wherein the first control device is used to send a first control signal to the switch unit when the energy storage standard is met; The energy storage monitoring unit includes a second control device and a database, the database is communicatively connected to the battery management module, the database is used to store information collected by the battery management module, and the second control device is used to send a second control signal to the switch unit when the energy storage standard is met; After receiving the first control signal and the second control signal, the switch device switches on the energy storage unit and the power supply unit to store energy.

[0006] In the present invention, the energy storage unit further comprises a photovoltaic energy storage component, the photovoltaic energy storage component is connected to the battery pack, and the photovoltaic energy storage component is used to convert natural energy into electrical energy for storage; The battery management module can control the photovoltaic energy storage component to charge each energy storage battery in the battery group, and the battery management module can also control the startup state of the photovoltaic energy storage component.

[0007] In the present invention, the battery management module includes a plurality of industrial cameras for detecting external defects of the battery pack and a measuring device for detecting the charging and discharging time, remaining capacity, and internal resistance of the energy storage battery.

[0008] In the present invention, the switch unit adopts an intelligent circuit breaker, and the switch unit has a wireless communication module, and the wireless communication module is used to receive the first control signal and the second control signal; The switch unit also has a control module, and the switch unit can drive the control module through the wireless communication module to control the opening and closing of the intelligent circuit breaker.

[0009] Another intelligent photovoltaic energy storage method of the present invention is implemented according to the energy storage system described in the above technical solution, and the energy storage method includes: The energy storage monitoring unit obtains the operating parameters of the battery pack in the energy storage unit, presets a first standard, and when the energy storage unit reaches the first standard, the energy storage monitoring unit sends a second control signal to the switch unit; The power supply status and the load status of the power supply unit are obtained through the power generation monitoring unit, and a second standard is preset. When the power supply unit reaches the second standard, the power generation monitoring unit sends a first control signal to the switch unit; After the switch unit obtains the first control signal and the second control signal, it closes the switch to charge and store energy in the battery pack. When the switch unit obtains the second control signal but not the first control signal, the battery pack drives the photovoltaic energy storage component through the battery management module to charge and store energy in the battery pack.

[0010] In the present invention, the first standard is the power load threshold of the power supply unit, and the second standard is that the battery pack of the energy storage unit has remaining capacity and the energy storage batteries in the battery pack meet the usage standard.

[0011] In the present invention, the use standard includes the charge and discharge time, actual capacity, internal resistance of the battery cell, and whether the external part of the energy storage battery is damaged or bulged. When the charge and discharge time, actual capacity, and internal resistance of the battery cell of the energy storage battery are all greater than the calibrated minimum value, and the external part of the energy storage battery is not damaged or bulged, the energy storage battery meets the use standard; If the energy storage battery does not meet the usage standards, the battery management module sends information to the terminal device for reporting.

[0012] Another computer-readable storage medium of the present invention stores a computer program, which, when executed by a processor, implements the steps of the intelligent photovoltaic energy storage method described in the above technical solution.

[0013] Another execution device of the present invention includes an execution device body and a controller, wherein the controller includes a processor and a computer program stored in a memory and executable on the processor, and when the processor executes the program, the steps of the intelligent photovoltaic energy storage method described in the above technical solution are implemented.

[0014] (III) Beneficial effects Compared with the prior art, the present invention has the following beneficial effects: The present invention introduces a power generation monitoring unit and an energy storage monitoring unit to monitor the power supply status and load status of the power supply unit and the operating status of the energy storage unit in real time, and intelligently controls the on and off of the switch unit according to the monitoring results to achieve accurate storage and release of electric energy. This intelligent control method can make full use of the excess electric energy during the peak of photovoltaic power generation, improve energy storage efficiency, and flexibly adjust the charging and discharging strategy of the energy storage unit according to the needs of the power grid, thereby enhancing the flexibility and response speed of the system.

[0015] The battery management module of the present invention integrates multiple detection methods (such as industrial cameras, measuring devices, etc.) to comprehensively monitor the operating parameters and external status of the battery pack, timely discover and warn of potential faults, and effectively prevent safety accidents caused by battery failure. At the same time, the application of intelligent circuit breakers further improves the safety and reliability of the switch unit, ensuring that the power supply can be quickly cut off in an emergency to protect the safety of the system.

[0016] In the present invention, the wireless communication module is used to realize remote communication and control between the units, which reduces the frequency of manual inspection and on-site operation and reduces the operation and maintenance cost. In addition, the application of the database enables the system to store and analyze the operation data of the battery pack for a long time, providing strong support for the optimization and upgrading of the system and troubleshooting, further reducing the difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is the overall structural diagram of the photovoltaic energy storage system; Figure 2 This is a schematic diagram of the composition structure of the power generation monitoring unit; Figure 3 It is a schematic diagram of the composition structure of the energy storage monitoring unit; Figure 4 It is a schematic diagram of the overall structure of the energy storage unit; Figure 5 It is a logical structure diagram of the photovoltaic energy storage method; Figure 6 It is a schematic diagram of the framework structure of the execution equipment.

[0019] 10. Power supply unit, 20. Energy storage unit, 21. Battery management module, 22. Battery pack, 23. Photovoltaic energy storage component, 30. Switch unit, 40. Power generation monitoring unit, 41. Sensor, 42. First control device, 50. Energy storage monitoring unit, 51. Second control device, 52. Database, 60. Processor, 61. Memory, 62. Communication interface, 63. Communication bus. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0021] like Figure 1 The intelligent photovoltaic energy storage system shown mainly includes a power supply unit 10 and an energy storage unit 20. A switch unit 30 is provided between the power supply unit 10 and the energy storage unit 20. In the present invention, the power supply unit 10 is a photovoltaic substation.

[0022] The energy storage unit 20 can charge the energy storage battery of the power supply unit 10 when the photovoltaic substation generates power at its peak, and discharge the energy storage battery when the photovoltaic power generation is at its low peak, thereby reducing the abandonment rate of the photovoltaic substation, effectively solving the instability of photovoltaic power generation, smoothing random power fluctuations, improving the quality of photovoltaic power output, and making photovoltaic power generation a dispatchable power.

[0023] Specifically, both the energy storage unit 20 and the power supply unit 10 can supply power to the load, but since the power generation of the power supply unit 10 is volatile, the energy storage unit 20 is prone to energy loss when the power supply unit 10 is in power generation and load balance for a long time, and at this time, an external power generation element is required to supply power to the energy storage unit 20. In order to solve this problem, a photovoltaic energy storage component 23 is also connected to the other side of the power supply unit 10.

[0024] The photovoltaic energy storage component 23 is mainly composed of a power generation device with remote communication control and an inverter. The power generation device can be a combination of one or more of the three types of solar power generators, wind power generators, and biomass power generators. In this embodiment, a solar power generator is used, that is, a plurality of photovoltaic panels for collecting solar energy and a controller. When the power supply unit 10 cannot charge the energy storage unit 20 and the energy storage unit 20 needs to be recharged, the energy storage unit 20 can be recharged through the photovoltaic energy storage component 23 when the conditions are met.

[0025] Furthermore, if Figure 1-Figure 3The energy storage system shown in the figure also has a power generation monitoring unit 40 and an energy storage monitoring unit 50. The power generation monitoring unit 40 is used to detect the power supply status and load status of the power supply unit 10, and the energy storage monitoring unit 50 is used to monitor the operating status of the energy storage unit 20. In particular, the power generation monitoring unit 40 includes a sensor 41 and a first control device 42 for obtaining real-time electrical parameters of the substation, and the energy storage monitoring unit 50 includes a second control device 51. The first control device 42 and the second control device 51 are in communication connection with the switch unit 30, and are used to send a control signal to turn on or off the switch unit 30, thereby improving the control accuracy of the energy storage unit 20.

[0026] The power supply status mainly includes power load parameters, substation power generation status, power generation time and temperature, etc. The load status mainly includes load type, load curve, demand and equipment power, etc. The power generation monitoring unit 40 obtains these key parameters to determine whether the power supply station is above the power load peak, thereby sending a first control signal to the switch unit 30.

[0027] like Figure 4 As shown, the energy storage unit 20 mainly includes a battery management module 21 and a battery pack 22. The battery pack 22 is composed of a plurality of energy storage battery packs 22, and the battery management module 21 is used to detect and obtain the operating parameters of the battery pack 22. In particular, the battery management module 21 includes a plurality of industrial cameras for detecting external defects of the battery pack 22 and a measuring device for detecting the charging and discharging time, remaining capacity, and internal resistance of the energy storage battery.

[0028] The battery management module 21 uses the charge Coulomb algorithm to measure the current and voltage of the battery to calculate the remaining capacity of the battery, and the remaining capacity and total capacity of the energy storage battery can be further calculated and verified through the charge and discharge time of the energy storage battery, thereby greatly improving the measurement accuracy. The battery life can be calculated through parameters such as the internal resistance of the battery cell and the ambient temperature, and multiple industrial cameras can be used to collect data on the external features of the battery pack 22, including whether there are cracks, bulges, or damage on the surface.

[0029] Specifically, the energy storage monitoring unit 50 also has a database 52 for storing the information collected by the battery management module 21. The battery management module 21 can communicate and interact with the database 52, that is, the database 52 can store the operating parameters of the battery pack 22 collected by the battery management module 21, so that the background can monitor and warn the data, and the battery management module 21 can also retrieve the data in the database 52.

[0030] When the charge and discharge time, actual capacity, and internal resistance of the energy storage battery are all greater than the calibrated minimum value, and there is no damage or bulging on the outside of the energy storage battery, the battery management module 21 sends a closing signal to the energy storage monitoring unit 50, and the energy storage monitoring unit 50 sends a second control signal to the switch unit 30.

[0031] After receiving the first control signal and the second control signal, the switch unit 30 closes the switch so that the energy storage unit 20 stores energy. In order to realize this function, the switch unit 30 adopts an intelligent circuit breaker, that is, the switch unit 30 has a wireless communication module and a control module, and the intelligent circuit breaker can be wirelessly connected with the power generation monitoring unit 40 and the energy storage monitoring unit 50 through the wireless communication module. The wireless communication method can be one or more combinations of WIFI, Bluetooth, ZigBee, 5G, and 4G, that is, the intelligent circuit breaker can use two communication modules or one communication module or even multiple communication modules to transmit and communicate data and signals with the power generation monitoring unit 40 and the energy storage monitoring unit 50. When the intelligent circuit breaker, that is, the switch unit 30, receives the first control signal and the second control signal, the intelligent circuit breaker drives the closing mechanism to close the switch through the control module, thereby realizing remote automatic energy storage. That is, the control module can drive the opening and closing functions of the intelligent circuit breaker as well as the remote signaling and alarm functions.

[0032] It should be noted that both the power generation monitoring unit 40 and the energy storage monitoring unit 50 have devices for data analysis, processing and storage control systems, that is, a device similar to a main controller controls the first control device 42 or the second control device 51 .

[0033] Furthermore, when the power supply unit 10 is in a load balance between power generation and load for a long time, the power generation monitoring unit 40 does not send the first control signal to the switch unit 30. Since the energy storage battery may have problems such as power loss during the placement process, an external energy supplement component needs to be set to maintain the power of the energy storage system stable.

[0034] The battery management module 21 can also control the photovoltaic energy storage component 23 to charge each energy storage battery in the battery group 22. The battery management module 21 can also control the startup state of the photovoltaic energy storage component 23, that is, control the photovoltaic energy storage component 23 to be turned on or off.

[0035] In particular, when the power supply unit 10 is in a load balance between power generation and load for a long time, the battery management module 21 replenishes the battery group 22 by starting the photovoltaic energy storage component 23. In order to prevent the battery group 22 from being in a full-load state for a long time, the battery group 22 is composed of a main energy storage area and a backup energy storage area. The photovoltaic energy storage system in this application divides the battery group 22 into two areas, that is, when the power supply unit 10 is at a peak value and the energy storage battery in the main energy storage area is in a full-load state, the battery management module 21 stores the electric energy transmitted by the substation in the energy storage battery in the backup energy storage area.

[0036] The energy storage batteries in the main energy storage area and the energy storage batteries in the backup energy storage area are all monitored by the battery management module 21, and their real-time information can also be sent to the energy storage monitoring unit 50 for storage at the same time. Example

[0037] like Figure 5 The embodiment shown discloses an intelligent photovoltaic energy storage method, which is implemented based on the energy storage system disclosed in Example 1.

[0038] Specifically, the operating parameters of the battery pack in the energy storage unit are obtained through the energy storage monitoring unit, and a first standard is preset. When the energy storage unit reaches the first standard, the energy storage monitoring unit sends a second control signal to the switch unit; The power supply status and the load status of the power supply unit are obtained through the power generation monitoring unit, and a second standard is preset. When the power supply unit reaches the second standard, the power generation monitoring unit sends a first control signal to the switch unit; After the switch unit obtains the first control signal and the second control signal, it closes the switch to charge and store energy in the battery pack. When the switch unit obtains the second control signal but not the first control signal, the battery pack drives the photovoltaic energy storage component through the battery management module to charge and store energy in the battery pack.

[0039] That is, the energy storage monitoring unit obtains the operating parameters of the battery pack in the energy storage unit, and the first standard is preset as the power load threshold of the power supply unit. When the energy storage unit reaches the first standard, the energy storage monitoring unit sends a second control signal to the switch unit.

[0040] In this embodiment, the operating parameters include the voltage, current, temperature, etc. of the battery pack. The first standard can be set to when the power load exceeds 80%, the energy storage monitoring unit sends a second control signal to the switch unit. The power supply status and load status of the power supply unit are obtained through the power generation monitoring unit. The preset second standard is that the battery pack of the energy storage unit has a remaining cavity and the energy storage battery in the battery pack meets the usage standard. When the power supply unit reaches the second standard, the power generation monitoring unit sends the first control signal to the switch unit.

[0041] In this embodiment, the power supply status includes the power supply voltage, current, etc., the load status includes the load power, load current, etc., and the second standard can be set to when the remaining capacity of the battery pack is greater than 20% and the energy storage battery in the battery pack reaches the usage standard, the power generation monitoring unit sends a first control signal to the switch unit.

[0042] After the switch unit obtains the first control signal and the second control signal, it closes the switch to charge and store energy in the battery pack. When the switch unit obtains the second control signal but does not obtain the first control signal, the battery pack drives the photovoltaic energy storage component to charge and store energy in the battery pack through the battery management module. In this embodiment, the switch unit is a circuit breaker. When the first control signal and the second control signal are received, the circuit breaker closes to charge and store energy in the battery pack; when only the second control signal is received, the circuit breaker does not operate, and the battery management module drives the photovoltaic energy storage component to charge and store energy in the battery pack.

[0043] The battery management module sends information to the terminal device for reporting. When the energy storage battery does not meet the usage standards, the battery management module sends information to the terminal device for reporting. In this embodiment, the terminal device is a mobile phone, computer and other devices. The battery management module monitors the charging and discharging time, actual capacity, internal resistance of the battery cell, whether the external energy storage battery is damaged or bulged, and other parameters of the energy storage battery in real time. When these parameters do not meet the usage standards, the battery management module sends a warning message to the terminal device.

[0044] By introducing intelligent control technology, the control strategy can be adjusted in real time according to the actual environment or changes in conditions, thereby improving the flexibility and adaptability of the energy storage system. At the same time, by directly controlling the battery management module, all-round monitoring and control of the battery pack is achieved, improving the efficiency and safety of the energy storage system. In addition, by real-time monitoring of the operating status of the battery pack, abnormal conditions are discovered in time, and corresponding countermeasures are taken, thus improving the reliability and safety of the energy storage system. Example

[0045] An embodiment of the present invention provides a computer-readable storage medium.

[0046] The computer-readable storage medium provided in the embodiment of the present invention stores a computer program, and when the computer program is executed by a processor, the steps of any one of the above-mentioned intelligent photovoltaic energy storage methods can be implemented.

[0047] The computer-readable storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0048] For an introduction to the computer-readable storage medium provided in an embodiment of the present invention, please refer to the above method embodiment, and the present invention will not elaborate on it here.

[0049] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0050] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0051] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. Example

[0052] An embodiment of the present invention provides an execution device.

[0053] Please refer to Figure 6 , Figure 6 This is a schematic diagram of the structure of an execution device provided by the present invention, and the execution device may include: Memory for storing computer programs; The processor is used to implement the steps of any one of the above-mentioned intelligent photovoltaic energy storage methods when executing a computer program.

[0054] like Figure 6 As shown, it is a schematic diagram of the composition structure of the execution device, and the execution device may include: a processor 60, a memory 61, a communication interface 62 and a communication bus 63. The processor 60, the memory 61, and the communication interface 62 all communicate with each other through the communication bus 63.

[0055] In the embodiment of the present invention, the processor 60 may be a central processing unit (CPU), an application specific integrated circuit, a digital signal processor, a field programmable gate array or other programmable logic devices.

[0056] The processor 60 may call a program stored in the memory 61 . Specifically, the processor 60 may execute the operations in the embodiment of the push button switch fault detection method.

[0057] The memory 61 is used to store one or more programs, which may include program codes, and the program codes include computer operation instructions. In the embodiment of the present invention, the memory 61 at least stores programs for implementing the following functions: The energy storage monitoring unit obtains the operating parameters of the battery pack in the energy storage unit, presets a first standard, and when the energy storage unit reaches the first standard, the energy storage monitoring unit sends a second control signal to the switch unit; The power supply status and the load status of the power supply unit are obtained through the power generation monitoring unit, and a second standard is preset. When the power supply unit reaches the second standard, the power generation monitoring unit sends a first control signal to the switch unit; After the switch unit obtains the first control signal and the second control signal, it closes the switch to charge and store energy in the battery pack. When the switch unit obtains the second control signal but not the first control signal, the battery pack drives the photovoltaic energy storage component through the battery management module to charge and store energy in the battery pack.

[0058] In a possible implementation, the memory 61 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function, etc.; the data storage area may store data created during use.

[0059] In addition, the memory 61 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device or other volatile solid-state storage device.

[0060] The communication interface 62 may be an interface of a communication module, and is used to connect to other devices or systems.

[0061] Of course, it should be noted that Figure 6 The structure shown does not constitute a limitation on the execution device in the embodiment of the present invention. In actual applications, the execution device may include Figure 6 More or fewer components than shown, or combinations of certain components.

[0062] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. An intelligent photovoltaic energy storage system, characterized in that: The energy storage system comprises: A power supply unit and an energy storage unit, wherein the energy storage unit is used to store the electric energy leaked by the power supply unit during the peak power generation period, and a switch unit is further provided between the power supply unit and the storage unit; The energy storage system further includes a power generation monitoring unit and an energy storage monitoring unit, wherein the power generation monitoring unit is used to detect the power supply state and load state of the power supply unit, and the energy storage monitoring unit is used to monitor the operating state of the energy storage unit; The power generation monitoring unit and the energy storage monitoring unit are both wirelessly connected to the switch unit, and the switch unit can control the energy storage unit to store electric energy according to the control signal sent by the power generation monitoring unit and the energy storage monitoring unit; The energy storage unit includes a battery management module and a battery pack consisting of a plurality of energy storage batteries, and the battery management module is used to detect and obtain operating parameters of the battery pack; The power supply unit is a substation, and the power generation monitoring unit includes a sensor for obtaining real-time electrical parameters of the substation and a first control device, wherein the first control device is used to send a first control signal to the switch unit when the energy storage standard is met; The energy storage monitoring unit includes a second control device and a database, the database is communicatively connected to the battery management module, the database is used to store information collected by the battery management module, and the second control device is used to send a second control signal to the switch unit when the energy storage standard is met; After receiving the first control signal and the second control signal, the switch device switches on the energy storage unit and the power supply unit to store energy.

2. The intelligent photovoltaic energy storage system according to claim 1, characterized in that: The energy storage unit further comprises a photovoltaic energy storage component, which is connected to the battery pack and is used to convert natural energy into electrical energy for storage; The battery management module can control the photovoltaic energy storage component to charge each energy storage battery in the battery group, and the battery management module can also control the startup state of the photovoltaic energy storage component.

3. The intelligent photovoltaic energy storage system according to claim 1 or 2, characterized in that: The battery management module includes a plurality of industrial cameras for detecting external defects of the battery pack and a measuring device for detecting the charging and discharging time, remaining capacity and internal resistance of the energy storage battery.

4. The intelligent photovoltaic energy storage system according to claim 3, characterized in that: The switch unit adopts an intelligent circuit breaker, and the switch unit has a wireless communication module, and the wireless communication module is used to receive the first control signal and the second control signal; The switch unit also has a control module, and the switch unit can drive the control module through the wireless communication module to control the opening and closing of the intelligent circuit breaker.

5. An intelligent photovoltaic energy storage method, characterized in that: The energy storage method is implemented according to the energy storage system according to any one of claims 1 to 4, and the energy storage method comprises: The energy storage monitoring unit obtains the operating parameters of the battery pack in the energy storage unit, presets a first standard, and when the energy storage unit reaches the first standard, the energy storage monitoring unit sends a second control signal to the switch unit; The power supply status and the load status of the power supply unit are obtained through the power generation monitoring unit, and a second standard is preset. When the power supply unit reaches the second standard, the power generation monitoring unit sends a first control signal to the switch unit; After the switch unit obtains the first control signal and the second control signal, it closes the switch to charge and store energy in the battery pack. When the switch unit obtains the second control signal but not the first control signal, the battery pack drives the photovoltaic energy storage component through the battery management module to charge and store energy in the battery pack.

6. The intelligent photovoltaic energy storage method according to claim 5, characterized in that: The first standard is the power load threshold of the power supply unit, and the second standard is that the battery pack of the energy storage unit has remaining capacity and the energy storage batteries in the battery pack meet the usage standards.

7. The intelligent photovoltaic energy storage method according to claim 6, characterized in that: The usage standards include the energy storage battery's charge and discharge time, actual capacity, battery cell internal resistance, and whether the energy storage battery's exterior is damaged or bulged. When the energy storage battery's charge and discharge time, actual capacity, and battery cell internal resistance are all greater than the calibrated minimum value, and the energy storage battery's exterior is not damaged or bulged, the energy storage battery meets the usage standards; If the energy storage battery does not meet the usage standards, the battery management module sends information to the terminal device for reporting.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the intelligent photovoltaic energy storage method described in any one of claims 5-7 are implemented.

9. An execution device, comprising an execution device body and a controller, characterized in that: The controller includes a processor and a computer program stored in a memory and executable on the processor. When the processor executes the program, the steps of the intelligent photovoltaic energy storage method according to any one of claims 5 to 7 are implemented.

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