A wind-solar-storage-charging and off-grid integrated device and system thereof

Abstract

This utility model discloses an integrated device and system for wind, solar, energy storage, and charging with and without grid connection, relating to the field of power system technology. The integrated device includes a cabinet, a network connection module, a grid connection / off-grid metering module, a user load module, a power conversion module, an energy storage module, a DC charging module, a photovoltaic conversion module, a wind power conversion module, and a DC charging gun. The DC charging module is connected to the DC charging gun. The power conversion module includes an AC terminal and a DC terminal. The network connection module, grid connection / off-grid metering module, and user load module are all connected to the AC terminal of the power conversion module. The energy storage module, DC charging module, photovoltaic conversion module, and wind power conversion module are all connected to the DC terminal of the power conversion module. The grid connection / off-grid metering module includes a metering device and an STS switch. This utility model offers high integration, grid connection / off-grid capability, and high energy utilization.

Description

Technical Field

[0001] This utility model relates to the field of power system technology, and in particular to an integrated device and system for wind, solar, energy storage, charging and off-grid operation. Background Technology

[0002] With the improvement of living standards, people's requirements for high reliability and uninterrupted power supply, as well as their pursuit of zero-carbon living, are growing, creating an urgent need to build a new type of microgrid system that is self-sufficient in production and sales.

[0003] Currently, existing wind power generation, photovoltaic power generation, energy storage, charging and switching equipment have many problems, such as low technical integration: the equipment is scattered, resulting in large footprint, low operating efficiency and high installation costs;

[0004] Furthermore, the existing equipment relies on the mains power grid for power supply, and cannot be powered when the mains power fails, or it relies solely on the power generation equipment and its own energy storage equipment, resulting in an unstable overall power supply.

[0005] In addition, people have increasingly higher demands for a wider range of functions, including electric vehicle charging, wind and solar energy for energy conservation and carbon reduction, energy storage for arbitrage, and emergency use.

[0006] Therefore, there is an urgent need to design an integrated device and system for wind, solar, energy storage, and off-grid charging to solve the above problems. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide an integrated device and system for wind, solar, energy storage, charging and off-grid operation, which has high integration, can be connected to or disconnected from the grid and has high energy utilization rate.

[0008] like Figure 1As shown, to solve the above-mentioned technical problems, this utility model provides an integrated wind, solar, energy storage, and charging system for grid connection and off-grid operation. The system includes a cabinet, a network connection module, a grid connection / off-grid metering module, a user load module, a power conversion module, an energy storage module, a DC charging module, a photovoltaic conversion module, a wind power conversion module, and a DC charging gun mounted on the cabinet. The DC charging module is connected to the DC charging gun. The power conversion module includes an AC terminal and a DC terminal for converting DC power to AC power. The network connection module, the grid connection / off-grid metering module, and the user load module are all connected to the power conversion module. The power conversion module is connected to the AC terminal. The energy storage module, DC charging module, photovoltaic conversion module, and wind power conversion module are all connected to the DC terminal of the power conversion module. The grid-connected / off-grid metering module includes a metering device for measuring electricity consumption and an STS switch for switching between grid-connected and off-grid states. The metering device and the STS switch are interconnected. The metering device is connected to the AC terminal of the power conversion module, and the STS switch is connected to the mains power grid. The photovoltaic conversion module is connected to external photovoltaic modules to convert solar energy into electrical energy. The wind power conversion module is connected to an external wind turbine to convert wind energy into electrical energy.

[0009] As an improvement to the above scheme, the on-grid and off-grid metering module further includes a first AC switch, and the STS switch is connected to the mains power grid through the first AC switch; the user load module includes a detection alarm and a second AC switch, one end of the second AC switch and the detection alarm are both connected to the AC terminal of the power conversion module, and the other end of the second AC switch is connected to the external user load.

[0010] As an improvement to the above solution, a heat dissipation module and a monitoring module are also included; the heat dissipation module is located inside the cabinet and includes a third AC switch and an industrial air conditioner, the industrial air conditioner being connected to the AC terminal of the power conversion module through the third AC switch; the monitoring module includes a fourth AC switch located inside the cabinet and a monitoring camera located on the cabinet, the monitoring camera being connected to the AC terminal of the power conversion module through the fourth AC switch.

[0011] As an improvement to the above solution, the energy storage module includes an energy storage converter and a battery module. The battery module is connected to the DC terminal of the power conversion module through the energy storage converter. The DC charging module includes a first DC switch and a DC charging component. One end of the DC charging component is connected to the DC terminal of the power conversion module through the first DC switch, and the other end of the DC charging component is connected to the DC charging gun.

[0012] As an improvement to the above solution, the photovoltaic conversion module includes a photovoltaic converter and a second DC switch. One end of the second DC switch is connected to the DC terminal of the power conversion module through the photovoltaic converter, and the other end of the second DC switch is connected to an external photovoltaic module. The wind power conversion module includes a wind turbine converter and a wind turbine controller. One end of the wind turbine controller is connected to the DC terminal of the power conversion module through the wind turbine converter, and the other end of the wind turbine controller is connected to an external wind turbine generator.

[0013] As an improvement to the above solution, a protection module is also included inside the cabinet. The protection module includes a third DC switch and a surge protector. The surge protector is connected to the DC terminal of the power conversion module through the third DC switch.

[0014] As an improvement to the above solution, the interior of the cabinet is divided into a conversion control area and a power control area. The power control area includes a first control area and a second control area. The energy storage converter, DC charging component, photovoltaic converter, wind turbine converter, wind turbine controller, and power conversion module are located in the conversion control area. The network connection module, on-grid and off-grid metering module, second AC switch, third AC switch, fourth AC switch, first DC switch, second DC switch, and protection module are located in the first control area. The detection alarm, industrial air conditioner, and battery module are located in the second control area.

[0015] As an improvement to the above solution, both the transformation control area and the power control area are equipped with fire extinguishers, which are connected to the detection alarm.

[0016] As an improvement to the above solution, the power conversion module is a PCS inverter.

[0017] Accordingly, this utility model also discloses an integrated system of wind, solar, energy storage, charging and off-grid connection, including the above-mentioned integrated device of wind, solar, energy storage, charging and off-grid connection, photovoltaic modules, wind turbine generator, mains power grid, user load and cloud platform;

[0018] The second DC switch of the integrated wind-solar-storage-charging off-grid device is connected to the photovoltaic module, the wind turbine controller of the integrated wind-solar-storage-charging off-grid device is connected to the wind turbine generator, and the second AC switch of the integrated wind-solar-storage-charging off-grid device is connected to the user load.

[0019] The network connection module of the integrated wind, solar, energy storage, and off-grid device is connected to the cloud platform to send data to the cloud platform through the network connection module.

[0020] The beneficial effects of implementing this utility model are as follows:

[0021] This utility model presents a highly integrated wind, solar, energy storage, and charging device that operates both on and off the grid. All components are concentrated in the cabinet, resulting in a small footprint and high operating efficiency. The device also features an STS switch that allows switching between on and off-grid modes, allowing power to be switched to the energy storage module during grid outages. Furthermore, the device utilizes both grid power and the energy storage module for stable overall power supply. The photovoltaic and wind power conversion modules enhance energy utilization, and the DC charging gun can charge electric vehicles.

[0022] Furthermore, this utility model's integrated wind, solar, energy storage, and off-grid charging device enhances system stability and reliability through optimized structure and function. The addition of the heat dissipation and monitoring modules effectively reduces the internal temperature of the device, enhancing system safety and reliability, and facilitating remote management and maintenance. The inclusion of a surge protector further enhances system safety. The internal zoning of the cabinet makes the system layout more rational, facilitating equipment installation, maintenance, and management, and improving system operating efficiency and safety. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the connection structure of each component in the integrated wind, solar, energy storage, charging and off-grid device of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the integrated wind, solar, energy storage, charging and off-grid device of this utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the integrated wind, solar, energy storage, charging and off-grid device of this utility model from another angle;

[0026] Figure 4 This is a schematic diagram of the integrated wind, solar, energy storage, charging and off-grid system of this utility model;

[0027] Figure 5 This is a schematic diagram of the data communication of the integrated wind, solar, energy storage, charging and off-grid system of this utility model. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0029] like Figure 1As shown, the integrated wind, solar, energy storage, charging and off-grid device of this utility model includes a cabinet 1, a network connection module 2, an on-grid metering module 3, a user load module 4, a power conversion module 5, an energy storage module 6, a DC charging module 7, a photovoltaic conversion module 8, a wind power conversion module 9, and a DC charging gun 10 installed on the cabinet. The DC charging module 7 is connected to the DC charging gun 10, and the DC charging gun 10 is used to charge electric vehicles.

[0030] Preferably, the network connection module 2 includes a wireless data network management system 21 and an EMS (22);

[0031] EMS, or Energy Management System, is the core control hub of an energy storage system, responsible for monitoring, controlling, and optimizing the energy flow and operating efficiency of the entire system. EMS communication methods typically include: serial communication (such as RS485 interfaces), commonly used to connect energy storage converters (PCS), battery management systems (BMS), and temperature control devices; and Ethernet communication, used to connect human-machine interfaces (HMIs) and support OTA upgrades of HMIs via the EMS host. The specific application principles of EMS are existing technologies and will not be elaborated upon here.

[0032] The power conversion module 5 includes an AC terminal and a DC terminal, used to convert DC power to AC power.

[0033] Preferably, the power conversion module 5 is a PCS inverter; the PCS inverter is one of the key devices in the energy storage system, mainly used to convert direct current (DC) to alternating current (AC), or vice versa. In energy storage systems, PCS inverters are typically used for energy conversion between battery energy storage systems (BESS) and the power grid. The specific principles of PCS inverters are existing technologies and will not be elaborated here.

[0034] PCS inverters have high-efficiency power conversion capabilities, enabling rapid and stable conversion between DC and AC power, thus improving the system's energy conversion efficiency and power quality. At the same time, PCS inverters have excellent control performance, which can better adapt to different operating conditions, enhancing the system's flexibility and reliability.

[0035] The network connection module 2, the on-grid and off-grid metering module 3, and the user load module 4 are all connected to the AC terminal of the power conversion module 5;

[0036] The energy storage module 6, DC charging module 7, photovoltaic conversion module 8 and wind power conversion module 9 are all connected to the DC terminal of the power conversion module 5;

[0037] The on-grid and off-grid metering module 3 includes a metering device 31 for measuring electricity consumption and an STS switch 32 for switching between on-grid and off-grid states. The metering device 31 and the STS switch 32 are interconnected. The metering device 31 is connected to the AC terminal of the power conversion module 5, and the STS switch 32 is connected to the mains power grid.

[0038] It should be noted that an STS (Static Transfer Switch) is a power device used to achieve fast and seamless switching between two independent AC power sources. It is primarily used to ensure uninterrupted power supply to critical loads, with switching times typically in the millisecond range (5ms-8ms).

[0039] The photovoltaic conversion module 8 is connected to an external photovoltaic module and is used to convert light energy into electrical energy;

[0040] The wind power conversion module 9 is connected to an external wind turbine and is used to convert wind energy into electrical energy.

[0041] This utility model presents a highly integrated wind, solar, energy storage, and charging device that is connected to and off-grid. All devices are concentrated in the cabinet 1, resulting in a small footprint and high operating efficiency. The device also features an STS switch that can switch between connected and off-grid modes, allowing power to be switched to the energy storage module 6 when the mains power grid fails. Furthermore, the device provides stable overall power supply through dual power supply from both the mains power grid and the energy storage module 6. Energy utilization is improved through the photovoltaic conversion module 8 and the wind power conversion module 9, and electric vehicles can be charged via the DC charging gun 10.

[0042] Preferably, the on-grid and off-grid metering module 3 further includes a first AC switch 33, and the STS switch 32 is connected to the mains power grid through the first AC switch 33;

[0043] The user load module 4 includes a detection alarm 41 and a second AC switch 42. One end of the second AC switch 42 and the detection alarm 41 are both connected to the AC terminal of the power conversion module 5, and the other end of the second AC switch 42 is connected to the external user load.

[0044] This utility model's integrated wind, solar, energy storage, and charging / off-grid device achieves flexible control of the mains power grid and user loads by incorporating a first AC switch 33 and a second AC switch 42, thereby improving system stability and security. Furthermore, the detection alarm 41 can monitor the system status in real time, promptly detecting anomalies to ensure normal system operation. The detection alarm 41 provides early warning and issues a trip command to disconnect the second AC switch 42, preventing fires. Simultaneously, the detection alarm 41 uploads fire anomaly data through the wireless data gateway 21, alerting maintenance personnel to immediately address fire anomalies, thus maximizing the device's safety and reducing maintenance costs.

[0045] To further enhance safety performance, the integrated wind, solar, energy storage, charging and off-grid device also includes a heat dissipation module 11 and a monitoring module 12;

[0046] The heat dissipation module 11 is located inside the cabinet 1 and includes a third AC switch 111 and an industrial air conditioner 112. The industrial air conditioner 112 is connected to the AC terminal of the power conversion module 5 through the third AC switch 111.

[0047] The monitoring module 12 includes a fourth AC switch 121 located inside the cabinet 1 and a monitoring camera 122 located on the cabinet 1. The monitoring camera 122 is connected to the AC terminal of the power conversion module 5 through the fourth AC switch 121.

[0048] The integrated wind, solar, energy storage, and off-grid device of this utility model effectively reduces the internal temperature of the device through the heat dissipation module 11, extends the service life of the equipment, and improves the stability of system operation; the monitoring module 12 can monitor the surrounding environment of the cabinet 1 in real time, enhance the safety and reliability of the system, and facilitate remote management and maintenance.

[0049] The energy storage module 6 includes an energy storage converter 61 and a battery module 62. The battery module 62 is connected to the DC terminal of the power conversion module 5 through the energy storage converter 61.

[0050] The DC charging module 7 includes a first DC switch 71 and a DC charging component 72. One end of the DC charging component 72 is connected to the DC terminal of the power conversion module 5 through the first DC switch 71, and the other end of the DC charging component 72 is connected to the DC charging gun 10.

[0051] In terms of energy utilization and power generation, the photovoltaic conversion module 8 includes a photovoltaic converter 81 and a second DC switch 82. One end of the second DC switch 82 is connected to the DC terminal of the power conversion module 5 through the photovoltaic converter 81, and the other end of the second DC switch 82 is connected to an external photovoltaic module.

[0052] The wind power conversion module 9 includes a wind turbine converter 91 and a wind turbine controller 92. One end of the wind turbine controller 92 is connected to the DC terminal of the power conversion module 5 through the wind turbine converter 91, and the other end of the wind turbine controller 92 is connected to an external wind turbine generator.

[0053] This utility model provides the specific composition and connection method of each module for the integrated wind, solar, energy storage, charging and off-grid connection device, making the system structure clearer and easier to implement and maintain; each module is connected to the power conversion module through corresponding switches, which improves the system's flexibility and controllability and enables it to better adapt to different operating conditions.

[0054] To improve power safety, the integrated wind, solar, energy storage, and off-grid charging device also includes a protection module 13 located inside the cabinet 1. The protection module 13 includes a third DC switch 131 and a surge protector 132. The surge protector 132 is connected to the DC terminal of the power conversion module 5 through the third DC switch 131.

[0055] The surge protector 132 can effectively protect the system from voltage surge damage, improving the system's safety and reliability; the connection of the surge protector 132 is controlled by the third DC switch 131, enhancing the system's flexibility and maintainability.

[0056] Preferably, the energy storage module 6, DC charging module 7, photovoltaic conversion module 8, wind power conversion module 9 and protection module 13 are all connected to the DC power conversion module 5 via a DC 750V DC bus. The power conversion module 5 (PCS inverter) converts the AC power from the mains grid to the battery module 62 and DC charging module 7, and can convert any unused DC power into AC power and upload it to the mains grid.

[0057] The photovoltaic conversion module 8 and the wind power conversion module 9 enable self-generation and self-use of electricity, storage of electrical energy, and uploading of surplus electricity to the municipal power grid.

[0058] like Figure 2 and Figure 3 As shown, in order to manage the internal equipment by zone, the interior of the cabinet 1 is divided into a transformation control area and a power control area, and the power control area includes a first control area and a second control area.

[0059] Figure 2 This is a schematic diagram of the internal structure of the integrated wind, solar, energy storage, charging, and off-grid device of this utility model, with the front cover of the cabinet removed. Figure 3 A schematic diagram of the internal structure of the rear cover of the cabinet of the integrated wind, solar, storage, charging and off-grid device of this utility model after removing the cabinet;

[0060] The transformation control area is located in the left half of the interior of the cabinet 1, and the power control area is located in the right half of the interior of the cabinet 1.

[0061] The first control area is the front half of the right half of the interior of the cabinet 1, and the second control area is the rear half of the right half of the interior of the cabinet 1.

[0062] Specifically, the energy storage converter 61, DC charging component 72, photovoltaic converter 81, wind turbine converter 91, wind turbine controller 92 and power conversion module 5 are located in the conversion control area;

[0063] The network connection module 2, the on-grid and off-grid metering module 3, the second AC switch 42, the third AC switch 111, the fourth AC switch 121, the first DC switch 71, the second DC switch 82, and the protection module 13 are located in the first control area;

[0064] The detection alarm 41, industrial air conditioner 112, and battery module 62 are located in the second control area.

[0065] This utility model integrates wind, solar, energy storage, charging, and off-grid devices by clarifying the specific layout of each module in different control areas, further optimizing the system structure and improving the system's integration and operating efficiency. The reasonable layout helps to improve the system's heat dissipation performance and reliability, reduce interference between devices, and enhance the overall performance of the system.

[0066] Both the transformation control area and the power control area are equipped with fire extinguishers 14, and the fire extinguishers 14 are connected to the detection alarm 41.

[0067] The fire extinguisher 14 is installed in both the transformation control area and the power control area and is connected to the detection alarm 41. This enables timely detection of fire hazards and the implementation of fire extinguishing measures, effectively ensuring the safety of system equipment, reducing fire losses, and improving the safety and reliability of the system. Preferably, the fire extinguisher 14 is a perfluorohexanone fire extinguisher. When a fire occurs in the cabinet 1, the fire extinguisher 14 is activated to spray perfluorohexanone to prevent the fire.

[0068] Accordingly, this utility model also discloses an integrated system of wind, solar, energy storage, charging and off-grid connection, including the above-mentioned integrated device 101 of wind, solar, energy storage, charging and off-grid connection, photovoltaic module 102, wind turbine generator 103, mains power grid 104, user load 105 and cloud platform 106.

[0069] The second DC switch 82 of the integrated wind-solar-storage-charging off-grid device 101 is connected to the photovoltaic module 102, the wind turbine controller 92 of the integrated wind-solar-storage-charging off-grid device 101 is connected to the wind turbine generator 103, and the second AC switch 42 of the integrated wind-solar-storage-charging off-grid device 101 is connected to the user load 105.

[0070] The network connection module 2 of the integrated wind, solar, energy storage, charging and off-grid device 101 is connected to the cloud platform 106 to send data to the cloud platform 106 through the network connection module 2.

[0071] Preferably, the data communication connection structure of the integrated system of optical storage, charging, paralleling, and off-grid operation of this utility model is as follows: Figure 5 :

[0072] The industrial air conditioner 112 is connected to the EMS (22) via RS485, and the STS switch 32 is connected to the EMS (22) via RS485;

[0073] The metering device 31, the power conversion module 5, the photovoltaic converter 81 and the energy storage converter 61 are connected to the EMS (22) via RS485;

[0074] The wind turbine controller 92, wind turbine converter 91, DC charging component 72 and detection alarm 41 are connected to the EMS (22) via RS485;

[0075] The EMS (22) is connected to the wireless data gateway 21, and the surveillance camera 122 is also connected to the wireless data gateway 21.

[0076] Finally, the operating information and power information of each device are sent to the cloud platform 106 via a public wireless network. Users or maintenance personnel can access the cloud platform 106 through mobile terminals or computers to view charging data, energy storage data, photovoltaic data, wind power data, video surveillance data, power monitoring data, etc. They can also modify and adjust device operating parameters through mobile terminals or computers, and print operating data sheets, offering diverse functions. In case of any abnormality, the cloud platform 106 can promptly send alarm information to the maintenance personnel's mobile terminals to improve maintenance efficiency.

[0077] This invention constructs a complete integrated system of wind, solar, energy storage, charging, and off-grid operation, organically combining the integrated device 101 with the photovoltaic module 102, wind turbine 103, mains power grid 104, user load 105, and cloud platform 106. This achieves efficient energy conversion, transmission, storage, and utilization, improving the overall performance and intelligence level of the system. Through the connection between the network connection module 2 and the cloud platform 106, remote monitoring and management of the system are realized, facilitating real-time monitoring of the system's operating status, timely adjustment of operating strategies, and improvement of system operating efficiency and reliability.

[0078] In summary, this integrated wind-solar-storage-charging off-grid device boasts high integration, with all equipment concentrated in the cabinet 1, resulting in a small footprint and high operating efficiency. The device also features an STS switch that allows switching between on-grid and off-grid modes, allowing power to be switched to the energy storage module 6 during grid outages. Furthermore, the dual power supply from both the grid and the energy storage module 6 ensures stable overall power supply. The photovoltaic conversion module 8 and wind power conversion module 9 enhance energy utilization, while the DC charging gun 10 provides charging for electric vehicles. This integrated wind-solar-storage-charging off-grid device enhances system stability and reliability through optimized structure and function. The addition of the heat dissipation module 11 and monitoring module 12 effectively reduces the internal temperature of the device, enhancing system safety and reliability, and facilitating remote management and maintenance. The surge protector 132 further enhances system safety. The internal zoning of the cabinet 1 makes the system layout more rational, facilitating equipment installation, maintenance, and management, and improving system operating efficiency and safety.

[0079] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. An integrated device for wind, solar, energy storage, and off-grid charging, characterized in that, It includes a cabinet, a network connection module, an on-grid and off-grid metering module, a user load module, a power conversion module, an energy storage module, a DC charging module, a photovoltaic conversion module, a wind power conversion module, and a DC charging gun installed on the cabinet, wherein the DC charging module is connected to the DC charging gun; The power conversion module includes an AC terminal and a DC terminal, used to convert DC power to AC power and vice versa; The network connection module, the on-grid and off-grid metering module, and the user load module are all connected to the AC terminal of the power conversion module; The energy storage module, DC charging module, photovoltaic conversion module and wind power conversion module are all connected to the DC terminal of the power conversion module; The on-grid and off-grid metering module includes a metering device for measuring electricity consumption and an STS switch for switching between on-grid and off-grid states. The metering device and the STS switch are interconnected. The metering device is connected to the AC terminal of the power conversion module, and the STS switch is connected to the mains power grid. The photovoltaic conversion module is connected to an external photovoltaic module to convert light energy into electrical energy; The wind power conversion module is connected to an external wind turbine to convert wind energy into electrical energy.

2. The integrated wind, solar, energy storage, charging, and off-grid charging device according to claim 1, characterized in that, The on-grid and off-grid metering module also includes a first AC switch, and the STS switch is connected to the mains power grid through the first AC switch; The user load module includes a detection alarm and a second AC switch. One end of the second AC switch and the detection alarm are both connected to the AC terminal of the power conversion module, and the other end of the second AC switch is connected to the external user load.

3. The integrated wind, solar, energy storage, charging, and off-grid charging device according to claim 2, characterized in that, It also includes a heat dissipation module and a monitoring module; The heat dissipation module is located inside the cabinet and includes a third AC switch and an industrial air conditioner. The industrial air conditioner is connected to the AC terminal of the power conversion module through the third AC switch. The monitoring module includes a fourth AC switch located inside the cabinet and a monitoring camera located on the cabinet. The monitoring camera is connected to the AC terminal of the power conversion module through the fourth AC switch.

4. The integrated wind, solar, energy storage, charging, and off-grid charging device according to claim 3, characterized in that, The energy storage module includes an energy storage converter and a battery module, and the battery module is connected to the DC terminal of the power conversion module through the energy storage converter. The DC charging module includes a first DC switch and a DC charging component. One end of the DC charging component is connected to the DC terminal of the power conversion module through the first DC switch, and the other end of the DC charging component is connected to the DC charging gun.

5. The integrated wind, solar, energy storage, charging, and off-grid charging device according to claim 4, characterized in that, The photovoltaic conversion module includes a photovoltaic converter and a second DC switch. One end of the second DC switch is connected to the DC terminal of the power conversion module through the photovoltaic converter, and the other end of the second DC switch is connected to an external photovoltaic module. The wind power conversion module includes a wind turbine converter and a wind turbine controller. One end of the wind turbine controller is connected to the DC terminal of the power conversion module through the wind turbine converter, and the other end of the wind turbine controller is connected to an external wind turbine generator.

6. The integrated wind, solar, energy storage, charging, and off-grid charging device according to claim 5, characterized in that, It also includes a protection module located inside the cabinet. The protection module includes a third DC switch and a surge protector. The surge protector is connected to the DC terminal of the power conversion module through the third DC switch.

7. The integrated wind, solar, energy storage, charging, and off-grid charging device according to claim 6, characterized in that, The interior of the cabinet is divided into a transformation control area and a power control area, and the power control area includes a first control area and a second control area; The energy storage converter, DC charging component, photovoltaic converter, wind turbine converter, wind turbine controller, and power conversion module are located in the conversion control area; The network connection module, the on-grid and off-grid metering module, the second AC switch, the third AC switch, the fourth AC switch, the first DC switch, the second DC switch, and the protection module are located in the first control area; The detection alarm, industrial air conditioner, and battery module are located in the second control area.

8. The integrated wind, solar, energy storage, charging, and off-grid charging device according to claim 7, characterized in that, Both the transformation control area and the power control area are equipped with fire extinguishers, which are connected to the detection alarm.

9. The integrated wind, solar, energy storage, charging, and off-grid charging device according to claim 1, characterized in that, The power conversion module is a PCS inverter.

10. An integrated system of wind, solar, energy storage, charging, and off-grid operation, characterized in that, Includes the integrated wind, solar, energy storage, and charging off-grid device as described in any one of claims 1-9, photovoltaic modules, wind turbines, mains power grid, user load, and cloud platform; The second DC switch of the integrated wind-solar-storage-charging off-grid device is connected to the photovoltaic module, the wind turbine controller of the integrated wind-solar-storage-charging off-grid device is connected to the wind turbine generator, and the second AC switch of the integrated wind-solar-storage-charging off-grid device is connected to the user load. The network connection module of the integrated wind, solar, energy storage, and off-grid device is connected to the cloud platform to send data to the cloud platform through the network connection module.

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