Split type direct current light stacking intelligent terminal structure

Abstract

This utility model provides a split-type DC superimposed photovoltaic intelligent terminal structure, consisting of a photovoltaic adapter and a combiner box. The photovoltaic adapter connects to the photovoltaic module, converting the solar energy collected by the photovoltaic module into electrical energy and stably outputting it into the combiner box. It includes a built-in energy meter and current transformer for monitoring electrical energy and current. The intelligent combiner box contains a main body, a top cover, a left support, a right support, a PCB assembly, a current transformer, a circuit breaker controller, a surge protector, an energy meter, a guide rail, guide rail clips, a waterproof connector, a pressure reducing valve, and an antenna sealing terminal. The guide rail clips fix the energy meter, circuit breaker controller, and surge protector to the guide rail. The energy meter is used to measure and monitor electrical energy data. The PCB assembly can read electrical energy data through an interface. The current transformer is mainly used for current monitoring. The photovoltaic adapter includes a main body, a back plate, a front cover, a rear cover, a PCB circuit board, connecting wires, and a sealing plug. The PCB circuit board converts the solar energy collected by the photovoltaic module into electrical energy and transforms the DC voltage output by the photovoltaic module into DC 48V. The PCB circuit board is fixed to the main body of the main body with screws. Both the tail cover and the front cover are connected to the main body of the housing with screws. After the interior of the photovoltaic adapter housing is sealed with glue, the back plate is connected to the main body of the housing with screws. The front cover has a terminal for outputting wires, and the connecting wires, fitted with sealing plugs, are connected to the input terminal of the photovoltaic combiner box through the terminal for outputting wires. The photovoltaic adapter, through a standardized interface design, collects the DC current from multiple photovoltaic modules or strings into the bus system of the combiner box. This compact design reduces the number of system wirings, lowers cable laying costs, and optimizes current transmission efficiency.

Description

Technical Field

[0001] This utility model relates to the field of DC superimposed light system power supply technology, and more specifically to a split-type DC superimposed light intelligent terminal structure. Background Technology

[0002] Photovoltaic power generation, as a clean and sustainable energy technology, boasts advantages such as high efficiency, environmental friendliness, and flexibility. It represents a crucial direction for future energy structure transformation. With technological advancements and cost reductions, the application scope of photovoltaic power generation continues to expand, poised to occupy a significant position in the global energy structure. DC superposition control equipment is a vital component of photovoltaic power generation systems. Its main function is to superimpose and optimize the DC power generated by the photovoltaic panels, thereby improving the overall system's power generation efficiency and stability. It is widely used in photovoltaic power generation systems of various scales and types, including residential, commercial, and large-scale photovoltaic power plants. In these application scenarios, DC superposition control equipment plays a crucial role, providing strong guarantees for the stable operation and efficient power generation of the system.

[0003] In response to the industry's call for the use of green energy, the photovoltaic (PV) system is also actively applied to the base station power supply system. By installing photovoltaic modules and adapters in the base station equipment room, the DC voltage output of the photovoltaic modules is converted to DC 48V and connected to the combiner box. The PV controller uses adapters to connect to the output of the photovoltaic modules, and performs MPPT tracking and regulation on each photovoltaic module through the adapters. The adapter outputs are connected in parallel to the 48V DC intelligent combiner box, and then connected to the existing 48V power supply system DC bus of the base station. Summary of the Invention

[0004] This utility model provides a split-type DC superimposed photovoltaic intelligent terminal structure, which consists of a photovoltaic adapter and a combiner box. The photovoltaic adapter connects to the photovoltaic module and can convert the solar energy collected by the photovoltaic module into electrical energy and output it stably to the combiner box; the built-in energy meter and current transformer can monitor the electrical energy and current.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] The split-type DC superimposed photovoltaic intelligent terminal structure consists of a photovoltaic adapter, a photovoltaic module, and an intelligent combiner box. The photovoltaic adapter connects to the photovoltaic module and can convert the solar energy collected by the photovoltaic module into electrical energy and output it stably to the combiner box.

[0007] The intelligent combiner box includes a main body, a top cover, a left support, a right support, a PCB assembly, a current transformer, a circuit breaker controller, a surge protector, a power meter, a guide rail, guide rail clips, a waterproof connector, a pressure reducing valve, and an antenna sealing terminal. Its characteristics are:

[0008] The main body of the enclosure is equipped with the guide rail, and the power meter, circuit breaker controller and surge protector are all mounted on the guide rail;

[0009] The guide rail clips fix the energy meter, circuit breaker controller and surge protector to the guide rail to prevent them from swaying left and right.

[0010] The energy meter is used to measure and monitor energy data, and the PCB assembly can read the energy data through the interface;

[0011] The current transformer is mainly used for current monitoring. The current transformer is fixed inside the main body of the combiner box by screws, and the PCB assembly can read the current data through the interface.

[0012] The circuit breaker controller is used to manually disconnect the circuit during terminal maintenance or repair to ensure operational safety.

[0013] The surge protector is used to discharge lightning overvoltage, protect the combiner box from being damaged by lightning, and when an overvoltage occurs in the system, keep the voltage amplitude within the safe range of the equipment, while releasing the surge energy to the ground.

[0014] The PCB assembly is used to process the DC voltage data from the 8-channel adapter; it also collects current and voltage data, and has a communication module that can upload the monitoring data to the monitoring center.

[0015] The left and right brackets of the box are used to fix the left and right ends of the intelligent combiner box, and are connected to the main body of the box by screws;

[0016] The lower end of the main body of the box is equipped with multiple waterproof joints;

[0017] The housing body is equipped with a pressure reducing valve;

[0018] The main body of the enclosure is equipped with an antenna terminal, which can be connected to an external antenna for data transmission;

[0019] The top cover of the box is connected to the main body of the box by a pivot at one end and by a snap-fit ​​at the other end.

[0020] The photovoltaic adapter comprises a main body, a back plate, a front cover, a rear cover, a PCB circuit board, connecting wires, and a sealing plug, characterized in that:

[0021] The PCB circuit board is used to convert the solar energy collected by the photovoltaic module into electrical energy;

[0022] The PCB circuit board is fixed to the main body of the housing with screws;

[0023] The front cover is equipped with a wire outlet terminal;

[0024] The sealing plug is fitted onto the connecting line;

[0025] The back panel, tail cover, and front cover are all connected to the main body of the box by screws.

[0026] The main body of the photovoltaic adapter box is sealed with glue inside.

[0027] The beneficial effects of this utility model are:

[0028] (1) The present invention has a split DC superimposed photovoltaic intelligent terminal structure. The intelligent combiner box supports the access of 8 photovoltaic adapters. It can be applied to areas where the power grid coverage of base station communication equipment is weak or unstable, dynamically switching between mains power and photovoltaic power to ensure all-weather operation and realize intelligent energy management.

[0029] (2) The present invention has a split DC superimposed light intelligent terminal structure with a wall-mounted structure design, which is convenient to install and suitable for small computer rooms and base stations with limited space. Attached Figure Description

[0030] Appendix Figure 1 This is a schematic diagram of the combiner box structure of the split-type DC superimposed light intelligent terminal of this utility model.

[0031] Appendix Figure 2 This is a schematic diagram of the photovoltaic adapter structure of the split-type DC superimposed photovoltaic intelligent terminal structure of this utility model.

[0032] Appendix Figure 3 This is a structural connection diagram of the split-type DC superimposed light intelligent terminal of this utility model. Detailed Implementation

[0033] The technical solution of this utility model will be described in detail below with reference to specific embodiments and accompanying drawings.

[0034] As attached Figure 1 Appendix Figure 2 and in conjunction with the appendix Figure 3 As shown: The split-type DC superimposed photovoltaic intelligent terminal structure consists of a photovoltaic adapter (D), a photovoltaic module (A), and an intelligent combiner box (B). The photovoltaic adapter connects to the photovoltaic module and can convert the solar energy collected by the photovoltaic module into electrical energy and output it stably to the combiner box.

[0035] As attached Figure 1 As shown: The intelligent combiner box includes a main body (13), a top cover (14), a left bracket (12), a right bracket (8), a PCB assembly (4), a current transformer (1), an air circuit breaker controller (6), a surge protector (2), an energy meter (5), a guide rail (7), a guide rail clip (3), a waterproof connector (9), a pressure reducing valve (11), and an antenna sealing terminal (10).

[0036] The PCB assembly processes the DC voltage data from the 8-channel adapter, and also collects current and voltage data. The PCB assembly includes a communication module to upload monitoring data to the monitoring center. The PCB assembly is screwed into the main body of the combiner box. The energy meter is used to measure and monitor energy data. The current transformer is mainly used for current monitoring. The circuit breaker controller is used to manually disconnect the circuit during terminal maintenance or repair to ensure operational safety. The surge protector is used to discharge lightning overvoltage, protecting the combiner box from lightning strikes. When an overvoltage occurs in the system, it keeps the voltage amplitude within the safe range of the equipment and releases the surge energy to ground. The main body of the box is equipped with the aforementioned guide rail. Specifically, the guide rail is screwed into the main body of the box, and the energy meter, circuit breaker controller, and surge protector are all secured to the guide rail to prevent vertical movement. The guide rail clips also secure the energy meter, circuit breaker controller, and surge protector to the guide rail to prevent horizontal movement.

[0037] The left and right brackets of the box are used for fixing and wall mounting of the left and right ends of the intelligent combiner box. The left and right brackets of the box are connected to the main body of the box by screws.

[0038] The lower end of the main body of the enclosure is equipped with multiple waterproof connectors for connecting to downlink equipment.

[0039] The top cover of the enclosure is connected to the main body of the enclosure by a rotating shaft at one end and by a snap-fit ​​connection at the other end, sealing the PCB assembly, current transformer, circuit breaker controller, energy meter and other components inside the enclosure.

[0040] The intelligent combiner box supports access to 8 photovoltaic adapters and outputs to the existing 48V power system DC busbar of the base station.

[0041] The enclosure is equipped with a pressure reducing valve to prevent excessive gas pressure from accumulating inside the equipment. When the gas pressure inside the equipment exceeds the ambient pressure, the pressure reducing valve will open to release the gas and vapor into the outside atmosphere.

[0042] The main body of the enclosure is equipped with an antenna terminal (C) for connecting an external antenna. In conjunction with the communication module of the PCB assembly, data can be uploaded to the monitoring center for background data analysis.

[0043] As attached Figure 2As shown: The photovoltaic adapter includes a housing body (21), a back plate (15), a front cover (18), a rear cover (20), a PCB circuit board (19), connecting wires (16), and a sealing plug (17). The PCB circuit board is used to convert the solar energy collected by the photovoltaic module into electrical energy and to convert the DC voltage output by the photovoltaic module into DC48V. The PCB circuit board is fixed to the housing body with screws. The rear cover and the front cover are both connected to the housing body with screws. After the interior of the photovoltaic adapter housing body is sealed with glue, the back plate is connected to the housing body with screws. The front cover is provided with a wire outlet terminal, and the connecting wire is fitted with a sealing plug and connected to the input terminal of the photovoltaic combiner box. The photovoltaic adapter uses a standardized interface design to collect the DC current of multiple photovoltaic modules or strings into the bus system of the combiner box. This compact design reduces the number of system wirings, lowers cable laying costs, and optimizes current transmission efficiency.

Claims

1. A split-type DC superimposed photovoltaic intelligent terminal structure, comprising a photovoltaic adapter, photovoltaic modules, and an intelligent combiner box. The photovoltaic adapter connects to the photovoltaic modules, converting the solar energy collected by the photovoltaic modules into electrical energy and stably outputting it into the combiner box. The intelligent combiner box includes a main body, a top cover, a left support, a right support, a PCB assembly, a current transformer, a circuit breaker controller, a surge protector, an energy meter, a guide rail, guide rail clips, a waterproof connector, a pressure reducing valve, and an antenna sealing terminal. Its characteristic is: The main body of the enclosure is equipped with the guide rail, and the power meter, circuit breaker controller and surge protector are all mounted on the guide rail; The guide rail clips fix the energy meter, circuit breaker controller and surge protector to the guide rail to prevent them from swaying left and right. The electricity meter is used to measure and monitor electricity data, and the PCB assembly can read the electricity data through the interface; The current transformer is mainly used for current monitoring. The current transformer is fixed inside the main body of the combiner box by screws, and the PCB assembly can read the current data through the interface. The circuit breaker controller is used to manually disconnect the circuit during terminal maintenance or repair to ensure operational safety. The surge protector is used to discharge lightning overvoltage, protect the combiner box from being damaged by lightning, limit the voltage amplitude to the safe range of the equipment when an overvoltage occurs in the system, and release the surge energy to the ground at the same time. The PCB assembly is used to process the DC voltage data from the 8 adapters; to collect current and voltage data; and the PCB assembly is equipped with a communication module that can upload the monitoring data to the monitoring center. The left and right brackets of the box are used to fix the left and right ends of the intelligent combiner box, and are connected to the main body of the box by screws; The lower end of the main body of the box is equipped with multiple waterproof joints; The main body of the box is equipped with a pressure reducing valve; The main body of the enclosure is equipped with an antenna terminal, which can be connected to an external antenna for data transmission; The top cover of the box is connected to the main body of the box by a pivot at one end and by a snap-fit ​​at the other end.

2. The split-type DC superimposed light intelligent terminal structure according to claim 1, characterized in that: The photovoltaic adapter includes a main body, a back plate, a front cover, a rear cover, a PCB circuit board, connecting wires, and a sealing plug. The PCB circuit board is used to convert the solar energy collected by the photovoltaic module into electrical energy; The PCB circuit board is fixed to the main body of the housing with screws; The front cover is equipped with a wire outlet terminal; The sealing plug is fitted onto the connecting line; The back plate, tail cover, and front cover are all connected to the main body of the housing by screws; the main body of the photovoltaic adapter housing is sealed with glue inside.

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