CN217957033U - Photovoltaic module connecting system with intelligent monitoring module - Google Patents

Abstract

The utility model provides a photovoltaic module connecting system with intelligent monitoring module, which comprises a plurality of photovoltaic modules, a plurality of connecting units, a plurality of main line connectors and a plurality of cables, wherein each photovoltaic module corresponds to a group of connecting units, and adjacent connecting units are connected through the cables and the main line connectors; the connection unit comprises an assembly junction box, a monitoring junction box, two three-port connection modules and two branch connectors. In the photovoltaic module connecting system of the utility model, each photovoltaic module corresponds to a group of connecting units, the parallel connection of the module junction box and the monitoring junction box is realized through the three-port connecting module and the branch connector, and the series connection of a plurality of connecting units is realized through the monitoring junction box and the main line connector, so that the whole construction wiring is simple, the construction cost is low and high in efficiency, and the maintenance is convenient; the system connection does not change the structure and the production process of the existing photovoltaic module, and is convenient for being used for a new intelligent photovoltaic system or carrying out intelligent transformation on the existing photovoltaic system.

Description

Photovoltaic module connecting system with intelligent monitoring module

Technical Field

The utility model relates to a solar photovoltaic system field especially relates to a photovoltaic module connected system with intelligent monitoring module.

Background

The solar photovoltaic power station is characterized in that photovoltaic modules are connected in series and in parallel to form a photovoltaic array to generate electricity, electric energy generated by the photovoltaic modules under the action of photovoltaic voltage is converged into an inverter or a controller through a junction box, a cable and the like, the electric energy in the form is converted into electric energy which is convenient for users to use by the inverter or the controller, and the electric energy is connected to a grid or is directly used by the users. Because the pv modules are connected in series, the maximum current flowing in a string is dependent on the worst performing pv module, a defective or damaged pv module, causing other pv modules in the string that are operating properly to also degrade. Therefore, the working state of each photovoltaic module is monitored in real time, and the method is very important for timely eliminating faults of the solar power station and improving the power generation efficiency of the solar power station. Therefore, the intelligent junction box with the monitoring function is produced at the same time, the working state of the assembly can be monitored, and timely shutoff is facilitated when the photovoltaic assembly breaks down. The intelligent junction box also needs to be connected with a circuit of the assembly and an adjacent intelligent junction box through cables, in addition, the assembly also has the conventional junction box and needs to be connected on the circuit, and therefore, in the photovoltaic system with the intelligent monitoring module at present, the required cables, connectors and the like are more in number, the cost is higher, the construction and wiring are complex, and the maintenance is not convenient.

Disclosure of Invention

The utility model aims at solving the shortcoming that exists among the prior art, and propose a photovoltaic module connected system with intelligent monitoring module, simplify the construction wiring, reduce cost improves the efficiency of construction, convenient maintenance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a photovoltaic module connecting system with an intelligent monitoring module comprises a plurality of photovoltaic modules, a plurality of connecting units, a plurality of main line connectors and a plurality of cables, wherein each photovoltaic module corresponds to one group of connecting units, and adjacent connecting units are connected through the cables and the main line connectors; the connecting unit comprises an assembly junction box, a monitoring junction box, two three-port connecting modules and two branch connectors, wherein the two three-port connecting modules are respectively arranged at two ends of the monitoring junction box; the three-port connecting module is provided with a first connecting port, a second connecting port and a third connecting port, the first connecting port is connected with the monitoring junction box through a cable, the second connecting port is connected with the main line connectors on two sides through cables, and the third connecting port is connected with the assembly junction box through the cables and the branch connectors.

Preferably, the assembly junction box is a three-split junction box and comprises a left junction box, a middle junction box and a right junction box, each junction box is connected with a corresponding photovoltaic assembly sub-string, and adjacent junction boxes are connected through bus bars; and third connecting ports of the two three-port connecting modules are respectively connected with the left junction box and the right junction box through cables and the branch connectors.

More preferably, the three-port connection module is a Y-shaped or T-shaped structure, and three connection ports of the three-port connection module are electrically connected to each other.

More preferably, the main line connector and the branch connector are plug connectors.

More preferably, each connection port of the main line connector, the three-port connection module and the branch connector is connected with the cable by crimping or welding after riveting.

More preferably, the photovoltaic module connection system further includes a data reader and an inverter, the data reader is connected with the head and the tail of one photovoltaic module string through a cable and the main line connector respectively, the inverter is connected with the data reader, and the data reader is connected with the commercial power.

Compared with the prior art, the beneficial effects of the utility model are that: in the photovoltaic module connecting system with the intelligent monitoring module, each photovoltaic module corresponds to a group of connecting units, the parallel connection of the component junction box and the monitoring junction box in the same connecting unit is realized through the three-port connecting module and the branch connector, the series connection of a plurality of connecting units is realized through the monitoring junction box and the main line connector, the whole construction wiring is simple, the construction cost is low, the construction efficiency is high, and the later maintenance is convenient; the system connection does not change the existing photovoltaic module structure and production process, and can be conveniently used for the construction of a new intelligent photovoltaic system or the intelligent transformation of the existing photovoltaic system.

Drawings

Fig. 1 is a schematic structural diagram of a photovoltaic module connection system with an intelligent monitoring module according to embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a connection unit in a photovoltaic module connection system having an intelligent monitoring module according to embodiment 1 of the present invention.

In the figure, 10-photovoltaic module, 20-connecting unit, 21-three-split junction box, 211-left junction box, 212-middle junction box, 213-right junction box, 22-monitoring junction box, 23-three-port connecting module, 24-branch connector, 30-main line connector, 40-cable, 50-data reader, 60-inverter.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Please refer to fig. 1, which is a schematic structural diagram of a photovoltaic module connection system with an intelligent monitoring module according to embodiment 1 of the present invention; the utility model discloses a photovoltaic module connected system, including a plurality of photovoltaic module 10, a plurality of linkage unit 20, a plurality of line connector 30 and a plurality of cable 40, every photovoltaic module 10 corresponds a set of linkage unit 20, connects through line connector 30 between the adjacent linkage unit 20. The photovoltaic modules 10 generate electric energy under the action of photovoltaic, and the connecting unit 20, the main line connector 30 and the cable 40 are used for collecting the electric energy generated by a plurality of photovoltaic modules 10.

Referring to fig. 2, the structural schematic diagram of the connection unit in the photovoltaic module connection system with the intelligent monitoring module of embodiment 1 of the present invention is shown, specifically, the connection unit 20 includes a module junction box (such as a three-part junction box 21 in embodiment 1), a monitoring junction box 22, two three-port connection modules 23 and two branch connectors 24, the three-part junction box 21 includes a left junction box 211, a middle junction box 212 and a right junction box 213, each junction box is connected to a corresponding photovoltaic module sub-string, and adjacent junction boxes are connected by a bus bar (not shown in the figure), so as to draw out the electric energy generated by the photovoltaic module 10; the two three-port connecting modules 23 are respectively arranged at two ends of the monitoring junction box 22; the three-port connection module 23 is provided with a first connection port a, a second connection port A1 and a third connection port A2, the first connection port a of the three-port connection module 23 is connected with the monitoring junction box 22 through a cable 40, the second connection port A1 of the three-port connection module 23 is connected with the main line connector 30 through a cable 40, and the main line connectors on adjacent photovoltaic modules are connected in a plugging manner; third connection port A2 of three-port connection module 23 is connected to left 211 and right terminal blocks 213 of triplex terminal block 21 via cable 40 and branch connector 24. So, three-port connection module 23 and branch connector 24 realize in same linkage unit 20 the parallelly connected of three-part formula terminal box 21 and monitoring terminal box 22, and monitoring terminal box 22 and main line connection ware 30 realize the series connection of a plurality of linkage unit 20, realize a plurality of photovoltaic module 10's electric energy promptly and collect, and whole connected system wiring is succinct, construction convenience, and the use amount of cable and connector is few, has practiced thrift construction cost, has improved the efficiency of construction, makes things convenient for later maintenance. The monitoring junction box 22 can collect working information such as voltage and temperature of the corresponding photovoltaic module 10, so that background monitoring is facilitated; when the photovoltaic module 10 breaks down, the monitoring junction box 22 can be timely turned off, so that the influence on the normal operation of the photovoltaic power station is avoided. In practical application, the three-part junction box 21 and the monitoring junction box 22 may be made of existing products, and the structure and the working principle thereof belong to the prior art, which are not described herein again.

The present invention provides a preferred embodiment, the three-port connection module 23 can be a Y-type or T-type structure, and the three connection ports of the three-port connection module 23 are electrically connected to each other. Referring to fig. 2, in embodiment 1 of the present invention, the three-port connection module 23 is a Y-type connector, one end of which is provided with a first connection port a, the other end of which is provided with a second connection port A1 and a third connection port A2, the first connection port a is connected to the monitoring connection box 22 through a cable 40, the second connection port A1 is connected to the adjacent main line connector 30 through a cable 40, and the third connection port A2 is connected to the left connection box 211 or the right connection box 213 through a cable 40 and a branch connector 24, so that the parallel connection between the three-split connection box 21 and the monitoring connection box 22 and the series connection between the two adjacent connection units 20 are realized.

In the preferred embodiment of the present invention, the main line connector 30 and the branch connector 24 are plug-in connectors and have two connection ports. And the plug-in type connector is adopted, so that the connection is quick and convenient, and the work efficiency is improved. In use, the main line connector 30 and the branch connector 24 may be manufactured as an existing product, and the present invention is not described in detail for the structure and the operation thereof.

Alternatively, each connection port of the main line connector 30, the three-port connection module 23, and the branch connector 24 is connected to the cable 40 by crimping, riveting, or welding. However, the present invention is not limited thereto, and in other embodiments, other reasonable manners may be used to connect the connection ports and the cable 40.

Referring to fig. 1, the photovoltaic module connection system of the present invention further includes a data reader 50 and an inverter 60, the data reader 50 is connected to the two sets of connection units 20 at the head and the tail of a photovoltaic module string respectively through the cable 40 and the main line connector 30, the inverter 60 is connected to the data reader 50, and the data reader 50 is connected to the commercial power. In application, the connection unit 20, the main line connector 30 and the cable 40 collect electric energy generated by the photovoltaic modules 10 to the data reader 50 and the inverter 60, the inverter 60 is used for converting the electric energy into electric energy convenient for a user to use, and the data reader 50 is used for acquiring working data of the inverter 60, so that monitoring of the working state of the modules through a PLC in a background is facilitated. The data reader 50 may be an existing data collector product, and the structure and operation principle thereof belong to the prior art, and are not described herein again. The system connection does not change the existing photovoltaic module structure and production process, and can be conveniently used for the construction of a new intelligent photovoltaic system or the intelligent transformation of the existing photovoltaic system.

To sum up, the utility model provides a photovoltaic module connected system with intelligent monitoring module, every photovoltaic module corresponds a set of linkage unit, and three-port link module and branch connector realize that components of a whole that can function independently formula terminal box is connected with the electricity of monitoring terminal box in the same linkage unit, and three-port link module and main line connection ware realize the series connection of a plurality of linkage units, and whole construction wiring is succinct, and construction cost is low, and the efficiency of construction is high, and the later maintenance of being convenient for.

The present invention has been described in relation to the above embodiments, which are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.

Claims (6)

1. A photovoltaic module connecting system with an intelligent monitoring module is characterized by comprising a plurality of photovoltaic modules, a plurality of connecting units, a plurality of main line connectors and a plurality of cables, wherein each photovoltaic module corresponds to one group of connecting units, and adjacent connecting units are connected through the cables and the main line connectors; the connecting unit comprises an assembly junction box, a monitoring junction box, two three-port connecting modules and two branch connectors, wherein the two three-port connecting modules are respectively arranged at two ends of the monitoring junction box; the three-port connecting module is provided with a first connecting port, a second connecting port and a third connecting port, the first connecting port is connected with the monitoring junction box through a cable, the second connecting port is connected with the main line connectors on two sides through cables, and the third connecting port is connected with the assembly junction box through the cables and the branch connectors.

2. The photovoltaic module connecting system with the intelligent monitoring module as claimed in claim 1, wherein the module junction box is a three-part junction box comprising a left junction box, a middle junction box and a right junction box, each junction box is connected with a corresponding photovoltaic module sub-string, and adjacent junction boxes are connected through a bus bar; and third connecting ports of the two three-port connecting modules are respectively connected with the left junction box and the right junction box through cables and the branch connectors.

3. The photovoltaic module connection system with the intelligent monitoring module as claimed in claim 1 or 2, wherein the three-port connection module is of a Y-type or T-type structure, and three connection ports of the three-port connection module are electrically connected with each other.

4. The photovoltaic module connection system with the intelligent monitoring module of claim 3, wherein the main line connector and the branch connector are plug connectors.

5. The photovoltaic module connection system with the intelligent monitoring module as claimed in claim 4, wherein each connection port of the main line connector, the three-port connection module and the branch connector is connected with the cable by crimping or welding after riveting.

6. The photovoltaic module connection system with the intelligent monitoring module according to claim 5, wherein the photovoltaic module connection system further comprises a data reader and an inverter, the data reader is respectively connected with the first and the last two groups of connection units of a photovoltaic module string through a cable and the main line connector, the inverter is connected with the data reader, and the data reader is connected with a mains supply.

Images