Optical storage and charging system and operation and maintenance system thereof

Abstract

The utility model provides an optical storage and charging system and an operation and maintenance system thereof, and relates to the technical field of energy storage, the optical storage and charging system comprises a converter, a photovoltaic device, an energy storage battery, a load device and an energy storage distribution box; the energy storage distribution box comprises a switch control unit, an electric meter, a current transformer, a switch and a cloud gateway; the converter is connected with the photovoltaic equipment, the energy storage battery, the load equipment and the switch control unit; the power grid is connected to the load equipment and the converter through the switch control unit; the switch control unit switches an off-grid mode and a grid-connected mode of the converter when the power grid is powered off and powered on; the load equipment is connected with the switch control unit; the switch is connected with the converter, the photovoltaic equipment and the energy storage battery; the switch is connected with the cloud gateway; the cloud gateway is connected with the ammeter and the converter. The operation and maintenance data is sent to the operation and maintenance platform through the switch and the cloud gateway, the operation and maintenance platform does not need to be connected with a management platform, and the cost of the operation and maintenance platform is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage, and specifically relates to a photoelectric storage and charging system and an operation and maintenance system thereof. Background Art

[0002] With the development of new energy technologies, photovoltaic storage and charging systems have been widely used. During long-term operation, various failures may occur in the equipment in the photovoltaic storage and charging systems. In this context, how to uniformly operate and maintain photovoltaic storage and charging systems used by different customers has become an important technical challenge.

[0003] In the existing technology, each customer of the photovoltaic storage and charging system will develop a management platform for their own use to manage their own photovoltaic storage and charging system, and then connect each customer's management platform to the operation and maintenance platform. The operation and maintenance data of each customer's management platform will be aggregated through the operation and maintenance platform to achieve unified operation and maintenance management.

[0004] However, in the prior art, as the number of customers of solar-storage-charging systems increases, the number of management platforms developed by customers also increases. The operation and maintenance platform needs to be connected to various management platforms, which will lead to an increase in the development and management costs of the operation and maintenance platform. Utility Model Content

[0005] In view of the above problems, an embodiment of the utility model provides a solar-storage-charging system and its operation and maintenance system to solve the problem in the existing solar-storage-charging system and its operation and maintenance system that the increase in the number of management platforms connected to the operation and maintenance platform leads to increased development and management costs of the operation and maintenance platform.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] In a first aspect, the utility model provides a photovoltaic storage and charging system, comprising: a converter (10), a photovoltaic device (20), an energy storage battery (30), a load device (40) and an energy storage distribution box (50); wherein the energy storage distribution box (50) comprises a switch control unit (501), an electric meter (502), a current transformer (503), a switch (504) and a cloud gateway (505); the load device (40) comprises an important load device (401) and a non-important load device (402); the converter (10) is respectively connected to the photovoltaic device (20 ), the energy storage battery (30), the load device (40) and the switch control unit (501) are electrically connected; the output end of the power grid is connected to the switch control unit (501), and the load device (40) and the converter (10) are connected through the switch control unit (501); the switch control unit (501) is used to switch the converter (10) into an off-grid mode when the power grid is off, and to switch the converter (10) into a grid-connected mode when the power grid is on; the output end of the converter (10) in the off-grid mode is connected to the heavy The load device (401) is electrically connected to the power grid; the output end of the converter (10) in the grid-connected mode is electrically connected to the load device (40); the load device (40) is electrically connected to the switch control unit (501), and the switch control unit (501) is used to control the on or off of the load device (40); the current transformer (503) is electrically connected to the output end of the power grid; the electric meter (502) is electrically connected to the current transformer (503); the switch (504) is respectively connected to the converter (10), the The photovoltaic device (20) and the energy storage battery (30) are communicatively connected; the switch (504) is also communicatively connected to the cloud gateway (505); the switch (504) is used to collect operation and maintenance data of the converter (10), the photovoltaic device (20) and the energy storage battery (30); the cloud gateway (505) is also communicatively connected to the electric meter (502) and the converter (10) respectively; the cloud gateway (505) is used to send the operation and maintenance data of the switch, the electric meter (502) and the converter (10) to an operation and maintenance platform.

[0008] Optionally, the switch control unit (501) comprises: a switching switch (5011) and N on-off switches (5012); wherein N is a positive integer; the switching switch (5011) is electrically connected to the converter (10), and the switching switch (5011) is used to switch the converter (10) into an off-grid mode when the power grid is powered off, and to switch the converter (10) into a grid-connected mode when the power grid is powered on; the N on-off switches (5012) are electrically connected to the load device (40), and the on-off switch (5012) is used to turn on or off the load device (40).

[0009] Optionally, the switch control unit (501) further comprises: a grid switch (5013); the grid switch (5013) is electrically connected to the converter (10), and the grid switch (5013) is used to switch on or off the power supply of the grid.

[0010] Optionally, the energy storage distribution box (50) further includes: a wireless communication stick (506); the wireless communication stick (506) is communicatively connected to the cloud gateway (505) and the switch (504) via a network cable; and the wireless communication stick (506) is wirelessly connected to the operation and maintenance platform.

[0011] Optionally, the solar energy storage and charging system further comprises: a user distribution box (60); the user distribution box (60) is electrically connected to the switch control unit (501), and the user distribution box (60) is used to distribute the electric energy of the power grid.

[0012] Optionally, the solar energy storage and charging system further comprises: a charging pile (70); the charging pile (70) is communicatively connected to the switch (504) via a network cable.

[0013] Optionally, the cloud gateway (505) and the converter (10) are communicated via an RS458 interface.

[0014] Optionally, the converter (10) is an energy storage converter.

[0015] In a second aspect, the utility model provides an operation and maintenance system for a photovoltaic storage and charging system, comprising at least one photovoltaic storage and charging system as described in the first aspect, and an operation and maintenance platform; wherein the operation and maintenance platform is communicatively connected to a cloud gateway (505) of the photovoltaic storage and charging system.

[0016] Optionally, the operation and maintenance platform of the operation and maintenance system of the optical storage and charging system includes at least one of the following: a mobile terminal, a background server and a large-screen device.

[0017] Compared with the prior art, the optical storage and charging system and its operation and maintenance system provided by the embodiments of the utility model have the following advantages: by setting switches and cloud gateways in the optical storage and charging system, the operation and maintenance data can be sent to the operation and maintenance platform, and there is no need to send the operation and maintenance data through the management platform. The operation and maintenance platform no longer needs to connect to various management platforms, which reduces the development and management costs of the operation and maintenance platform.

[0018] In addition to the technical problems solved by the embodiments of the utility model described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the photovoltaic storage and charging system and its operation and maintenance system provided by the embodiments of the utility model, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a light storage and charging system provided in one embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the structure of a switch control unit provided in one embodiment of the utility model;

[0022] Figure 3 A schematic structural diagram of a light storage and charging system provided in another embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 10- Converter;

[0025] 20- Photovoltaic equipment;

[0026] 30-Energy storage battery;

[0027] 40- load equipment;

[0028] 401-Important load equipment;

[0029] 402-Non-critical load equipment;

[0030] 50-Energy storage distribution box;

[0031] 501- switch control unit;

[0032] 5011-Switch;

[0033] 5012-on / off switch;

[0034] 5013-grid switch;

[0035] 502-electricity meter;

[0036] 503-current transformer;

[0037] 504-switch;

[0038] 505-cloud gateway;

[0039] 506- Wireless communication stick;

[0040] 60-User distribution box;

[0041] 70-Charging station. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] In traditional PV-storage-charging systems, customers who use PV-storage-charging systems will develop a management platform to manage their own PV-storage-charging systems. The management platform will collect the operation and maintenance data of the PV-storage-charging systems. The management platforms of different customers will aggregate the operation and maintenance data of different PV-storage-charging systems to Party A's operation and maintenance platform to achieve unified operation and maintenance management. However, as the number of customers of PV-storage-charging systems increases, the number of management platforms developed by customers also increases. Party A's operation and maintenance platform needs to be connected to more management platforms, and the cost of developing and managing Party A's operation and maintenance platform increases.

[0044] In order to solve the above technical problems, the utility model proposes the following technical ideas: a switch and a cloud gateway are set in the optical storage and charging system, the switch collects the operation and maintenance data of the equipment in the optical storage and charging system and sends the operation and maintenance data to the cloud gateway, and the cloud gateway sends the operation and maintenance data to the operation and maintenance platform. The operation and maintenance platform can determine whether the equipment needs maintenance based on the operation and maintenance data, and there is no need to achieve docking with many management platforms, which reduces the cost of development and management of the operation and maintenance platform.

[0045] Figure 1 The schematic diagram of the structure of the photovoltaic storage and charging system provided in one embodiment of the utility model. In this embodiment, the photovoltaic storage and charging system specifically includes: a converter 10, a photovoltaic device 20, an energy storage battery 30, a load device 40 and an energy storage distribution box 50.

[0046] The converter 10 may be a DC-AC converter. The photovoltaic device 20 may include a solar panel, a photovoltaic module, a fixed device and a transformer. The energy storage battery 30 may be a photovoltaic energy storage colloidal battery.

[0047] The energy storage distribution box 50 includes: a switch control unit 501 , an electric meter 502 , a current transformer 503 , a switch 504 and a cloud gateway 505 .

[0048] Among them, the switch control unit 501 can realize the opening or closing of the load device 40. The electric meter 502 can realize the measurement of electricity. The switch 504 can realize the physical connection of various signals and collect the operation and maintenance data of the equipment in the solar storage and charging system. The cloud gateway 505 can send the operation and maintenance data to the operation and maintenance platform.

[0049] Optionally, the load device 40 includes: an important load device 401 and a non-important load device 402 .

[0050] Among them, the important load equipment 401 may be an elevator or a server, etc. The non-important load equipment 402 may be a refrigerator or a light, etc.

[0051] The converter 10 is electrically connected to the photovoltaic device 20, the energy storage battery 30, the load device 40 and the switch control unit 501. The output end of the power grid is connected to the switch control unit 501, and is connected to the load device 40 and the converter 10 through the switch control unit 501.

[0052] The converter 10 may be a rectifier converter.

[0053] The switch control unit 501 is used to switch the converter 10 into an off-grid mode when the grid is powered off, and to switch the converter 10 into a grid-connected mode when the grid is powered on. The output end of the converter 10 in the off-grid mode is electrically connected to the important load device 401, and the output end of the converter 10 in the grid-connected mode is electrically connected to the load device 40.

[0054] The switch control unit 501 can switch the grid-connected and off-grid connections of the converter 10. When the converter 10 operates in the off-grid mode, the converter 10 is electrically connected to the important load device 401; when the converter 10 operates in the grid-connected mode, the converter 10 is electrically connected to the load device 40.

[0055] The load device 40 is electrically connected to the switch control unit 501 , and the switch control unit 501 is used to control the on or off of the load device 40 .

[0056] The switch control unit 501 may be a switch group composed of a plurality of switches, each switch being used to control the on or off of a load device 40 .

[0057] The current transformer 503 is electrically connected to the output end of the power grid.

[0058] Optionally, the current transformer 503 may be a reverse current transformer.

[0059] The electric meter 502 is electrically connected to the current transformer 503 .

[0060] The electric meter 502 can detect the current of the current transformer 503 .

[0061] The switch 504 is respectively connected to the converter 10, the photovoltaic device 20 and the energy storage battery 30 through a network cable. The switch 504 is also connected to the cloud gateway 505. The switch 504 is used to collect operation and maintenance data of the converter 10, the photovoltaic device 20 and the energy storage battery 30.

[0062] The switch 504 may collect operation and maintenance data such as the input current of the converter 10 , the output current of the photovoltaic device 20 , and the output voltage of the energy storage battery 30 . The switch 504 may also send the operation and maintenance data to the cloud gateway 505 .

[0063] The cloud gateway 505 is also communicatively connected to the electric meter 502 and the converter 10 respectively.

[0064] The cloud gateway 505 may receive current data from the electric meter 502 and voltage data from the converter 10 .

[0065] The cloud gateway 505 is used to send the operation and maintenance data of the switch 504, the electric meter 502, and the converter 10 to the operation and maintenance platform.

[0066] The operation and maintenance data may include the current and voltage of the energy storage battery 30 , the light intensity of the photovoltaic device 20 , and the output voltage of the converter 10 .

[0067] The working process of the photovoltaic storage and charging system in this embodiment includes: when the converter 10 operates in the grid-connected mode, the power grid supplies power to the load device 40 and charges the energy storage battery 30; when the converter 10 operates in the off-grid mode, the photovoltaic device supplies power to the important load device 401 and charges the energy storage battery 30. The switch 504 collects the operation and maintenance data of the converter 10, the photovoltaic device 20 and the energy storage battery 30, and sends the operation and maintenance data to the cloud gateway 505. The cloud gateway 505 sends the operation and maintenance data to the operation and maintenance platform. The photovoltaic device 20 can convert solar energy into direct current, which can charge the energy storage battery 30. The converter 10 can convert direct current into alternating current, which can power the load device 40. The switch control unit 501 can switch the grid-connected and off-grid connections of the converter 10 and the opening or closing of the load device 40. The electric meter 502 can realize the measurement of electricity. The switch 504 can realize the physical connection of various signals and collect the operation and maintenance data of the equipment in the photovoltaic storage and charging system. The cloud gateway 505 can send the operation and maintenance data to the operation and maintenance platform.

[0068] In summary, the switch can collect the operation and maintenance data of the converter, photovoltaic equipment, and energy storage battery, and send the operation and maintenance data to the cloud gateway. The cloud gateway sends the operation and maintenance data to the operation and maintenance platform, which can determine whether the equipment in the photovoltaic storage and charging system needs maintenance based on the operation and maintenance data. By setting up switches and cloud gateways in the photovoltaic storage and charging system, the operation and maintenance data can be sent to the operation and maintenance platform, and there is no need to send the operation and maintenance data through the management platform. The operation and maintenance platform no longer needs to connect to various management platforms, thereby reducing the development and management costs of the operation and maintenance platform.

[0069] refer to Figure 2 , Figure 2 The switch control unit 501 is a schematic diagram of a switch control unit according to an embodiment of the present invention. The switch control unit 501 comprises: a switching switch 5011 and N on-off switches 5012, wherein N is a positive integer.

[0070] The switch 5011 is electrically connected to the converter 10 , and the switch 5011 is used to switch the converter 10 into an off-grid mode when the grid is powered off, and to switch the converter 10 into a grid-connected mode when the grid is powered on.

[0071] The switch 5011 can switch the grid-connected and off-grid connections of the converter 10 .

[0072] The N on-off switches 5012 are electrically connected to the load device 40 , and the on-off switches 5012 are used to turn on or off the load device 40 .

[0073] Exemplarily, the two on-off switches 5012 are electrically connected to the light and the server, respectively, and the two on-off switches 5012 are used to turn on or off the light and the server, respectively.

[0074] Continue to refer Figure 2 Optionally, the switch control unit 501 of the solar energy storage and charging system also includes: a grid switch 5013.

[0075] The grid switch 5013 is electrically connected to the converter 10, and the grid switch 5013 is used to switch on or off the power supply of the grid.

[0076] Specifically, when the grid switch 5013 is closed, the grid supplies power to the load device 40 and charges the energy storage battery 30 , and when the grid switch 5013 is opened, the photovoltaic device 20 supplies power to the load device 40 and charges the energy storage battery 30 .

[0077] The working process of the photovoltaic storage and charging system in this embodiment includes: adjusting whether the grid supplies power through the grid switch 5013. When the grid switch 5013 is closed, the grid supplies power to the photovoltaic storage and charging system; when the grid switch 5013 is opened, the photovoltaic device 20 or the energy storage battery 30 supplies power to the photovoltaic storage and charging system. Adjusting whether the load device 40 works through N on-off switches 5012. Switching the grid-connected and off-grid connection of the converter 10 through the switching switch 5011.

[0078] In summary, switching switches, on-off switches and grid switches are set for different devices in the photovoltaic storage and charging system. Various switch types can realize different functions, enable more precise control of the photovoltaic storage and charging system, and enhance the safety and reliability of the photovoltaic storage and charging system.

[0079] refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a light energy storage and charging system provided by another embodiment of the utility model. The energy storage and distribution box 50 of the light energy storage and charging system also includes a wireless communication stick 506.

[0080] Among them, the wireless communication stick 506 is connected to the cloud gateway 505 and the switch 504 through a network cable; the wireless communication stick 506 is connected to the operation and maintenance platform through wireless communication.

[0081] Among them, the switch 504 can send the operation and maintenance data to the cloud gateway 505 through the wireless communication stick 506, and the switch 504 can also send the operation and maintenance data to the operation and maintenance platform through the wireless communication stick 506.

[0082] Continue to refer Figure 3 Optionally, the solar storage and charging system also includes: a user distribution box 60.

[0083] The user distribution box 60 is electrically connected to the switch control unit 501 , and the user distribution box 60 is used to distribute the electric energy of the power grid.

[0084] Among them, the user distribution box 60 is electrically connected to the output end of the power grid and the switch control unit 501, which can distribute the electric energy of the power grid and also provide overload protection and short-circuit protection for the solar storage and charging system.

[0085] Continue to refer Figure 3 Optionally, the solar storage and charging system also includes: a charging pile 70.

[0086] The charging pile 70 is connected to the switch 504 via a network cable.

[0087] The switch 504 may collect the current and voltage of the charging pile 70 .

[0088] Continue to refer Figure 3The cloud gateway 505 of the optical storage and charging system is connected to the converter 10 through an RS458 interface.

[0089] Specifically, the operation and maintenance data of the converter 10 can be sent to the cloud gateway 505 via the RS458 interface.

[0090] Continue to refer Figure 3 The converter 10 of the solar energy storage system is an energy storage converter.

[0091] The energy storage converter can convert the AC power of the power grid into DC power, and can also convert the DC power of the photovoltaic device 20 and the energy storage battery 30 into AC power.

[0092] The working process of the photovoltaic storage and charging system in this embodiment includes: when the energy storage inverter 10 operates in the grid-connected mode, the grid supplies power to the load device 40 through the user distribution box 60 and the switch control unit 501. The energy storage inverter 10 converts the AC power of the grid into DC power, and the DC power charges the energy storage battery 30. When the energy storage inverter 10 operates in the off-grid mode, the photovoltaic device 20 converts solar energy into DC power. The energy storage inverter 10 converts DC power into AC power, and the AC power supplies power to the load device 40. The switch 504 collects the operation and maintenance data of the photovoltaic device 20, the energy storage battery 30 and the charging pile 70 through the network cable. The switch 504 collects the operation and maintenance data of the inverter 10 through the RS458 interface, and sends the operation and maintenance data to the cloud gateway 505 through the wireless communication stick 506. The cloud gateway 505 sends the operation and maintenance data to the operation and maintenance platform.

[0093] In summary, by setting up wireless communication sticks and RS458 interfaces, the accuracy of the operation and maintenance data transmission of the photovoltaic storage and charging system is enhanced. The user distribution box can be powered off when an abnormal situation occurs in the power grid, which enhances the security of the operation and maintenance data transmission of the photovoltaic storage and charging system. The charging pile enhances the functionality of the photovoltaic storage and charging system.

[0094] The utility model also provides an operation and maintenance system of the optical storage and charging system, comprising at least one Figure 1 The optical storage and charging system and the operation and maintenance platform are connected in communication with the cloud gateway 505 of the optical storage and charging system.

[0095] Among them, the operation and maintenance platform can be connected to the cloud gateway 505 of the photovoltaic storage and charging systems of different customers, and the operation and maintenance platform can receive the operation and maintenance data of the photovoltaic storage and charging systems of different customers.

[0096] Optionally, the operation and maintenance platform of the operation and maintenance system of the optical storage and charging system includes at least one of the following: a mobile terminal, a background server and a large-screen device.

[0097] Among them, the operation and maintenance platform can display operation and maintenance data.

[0098] The working process of the operation and maintenance system of the optical storage and charging system in this embodiment includes: the operation and maintenance platform receives the operation and maintenance data sent by the cloud gateway of the optical storage and charging systems of different customers, and determines whether the equipment of the optical storage and charging systems of different customers needs maintenance based on the operation and maintenance data.

[0099] In summary, the operation and maintenance data of multiple PV-storage-charging systems are sent to an operation and maintenance platform, which determines whether the equipment in the multiple PV-storage-charging systems needs maintenance. The operation and maintenance platform receives the operation and maintenance data sent by multiple cloud gateways, and no longer needs to connect with multiple management platforms, which reduces the development and maintenance costs of the operation and maintenance platform.

[0100] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0101] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A solar storage and charging system, characterized in that: include: Converter (10), photovoltaic device (20), energy storage battery (30), load device (40) and energy storage distribution box (50); The energy storage distribution box (50) comprises: a switch control unit (501), an electric meter (502), a current transformer (503), a switch (504) and a cloud gateway (505); The load equipment (40) comprises: important load equipment (401) and non-important load equipment (402); The converter (10) is electrically connected to the photovoltaic device (20), the energy storage battery (30), the load device (40) and the switch control unit (501) respectively; the output end of the power grid is connected to the switch control unit (501), and is connected to the load device (40) and the converter (10) through the switch control unit (501); The switch control unit (501) is used to switch the converter (10) into an off-grid mode when the power grid is powered off, and to switch the converter (10) into a grid-connected mode when the power grid is powered on; the output end of the converter (10) in the off-grid mode is electrically connected to the important load device (401), and the output end of the converter (10) in the grid-connected mode is electrically connected to the load device (40); The load device (40) is electrically connected to the switch control unit (501), and the switch control unit (501) is used to control the on or off of the load device (40); The current transformer (503) is electrically connected to the output end of the power grid; The electric meter (502) is electrically connected to the current transformer (503); The switch (504) is respectively connected to the converter (10), the photovoltaic device (20) and the energy storage battery (30) via a network cable; the switch (504) is also connected to the cloud gateway (505); the switch (504) is used to collect operation and maintenance data of the converter (10), the photovoltaic device (20) and the energy storage battery (30); The cloud gateway (505) is also communicatively connected to the electric meter (502) and the converter (10) respectively; The cloud gateway (505) is used to send the operation and maintenance data of the switch (504), the electric meter (502), and the converter (10) to the operation and maintenance platform.

2. The solar storage and charging system according to claim 1, characterized in that: The switch control unit (501) comprises: a switching switch (5011) and N on-off switches (5012); wherein N is a positive integer; The switching switch (5011) is electrically connected to the converter (10), and the switching switch (5011) is used to switch the converter (10) into an off-grid mode when the power grid is powered off, and to switch the converter (10) into a grid-connected mode when the power grid is powered on; The N on-off switches (5012) are electrically connected to the load device (40), and the on-off switches (5012) are used to turn on or off the load device (40).

3. The solar storage and charging system according to claim 1, characterized in that: The switch control unit (501) further includes: a grid switch (5013); The grid switch (5013) is electrically connected to the converter (10), and the grid switch (5013) is used to switch on or off the power supply of the grid.

4. The solar storage and charging system according to claim 1, characterized in that: The energy storage distribution box (50) further includes: a wireless communication stick (506); The wireless communication stick (506) is connected to the cloud gateway (505) and the switch (504) via a network cable; the wireless communication stick (506) is connected to the operation and maintenance platform via wireless communication.

5. The solar storage and charging system according to claim 1, characterized in that: The solar energy storage and charging system further comprises: a user distribution box (60); The user distribution box (60) is electrically connected to the switch control unit (501), and the user distribution box (60) is used to distribute the electric energy of the power grid.

6. The solar storage and charging system according to any one of claims 1 to 5, characterized in that: The light storage and charging system further comprises: a charging pile (70); The charging pile (70) is communicatively connected to the switch (504) via a network cable.

7. The photovoltaic storage and charging system according to any one of claims 1 to 5, characterized in that: The cloud gateway (505) and the converter (10) are connected in communication via an RS458 interface.

8. The solar storage and charging system according to any one of claims 1 to 5, characterized in that: The converter (10) is an energy storage converter.

9. An operation and maintenance system for a solar storage and charging system, characterized in that: Comprising at least one photovoltaic storage and charging system as claimed in any one of claims 1 to 8, and an operation and maintenance platform; The operation and maintenance platform is communicatively connected with the cloud gateway (505) of the optical storage and charging system.

10. The operation and maintenance system of the solar energy storage and charging system according to claim 9, characterized in that: The operation and maintenance platform includes at least one of the following: a mobile terminal, a background server and a large-screen device.

Images