CN219592367U - Novel split type intelligent terminal box - Google Patents

Abstract

The utility model provides a novel split intelligent junction box which comprises a middle junction box, a left junction box and a right junction box, wherein the left junction box and the right junction box are respectively connected with the middle junction box through cables; the middle junction box is provided with a circuit board, the structure of the circuit board is matched with the positioning structure of the middle junction box, and the circuit board comprises one or more of an MPPT control module, a quick turn-off module and an intelligent monitoring module. The utility model adopts the combination of the standardized box body and the circuit boards with the same size and specification and different function modules, and realizes different functions of the junction box through the replacement of different circuit boards, so that the junction box with different functions has the same structure, the production die can be reduced, and the production cost can be saved; in addition, the middle junction box is further connected with the first connector and the second connector through cables, the installation difficulty is not increased under the condition that the layout of the existing assembly is not changed, the use of the connectors and corresponding wiring harnesses can be saved, and the economical efficiency is improved.

Description

Novel split type intelligent terminal box

Technical Field

The utility model relates to the technical field of photovoltaic junction boxes, in particular to a novel split intelligent junction box.

Background

With the development of global economy, new energy power generation technology is rapidly developed, and solar energy is widely and cleanly used as one of renewable energy sources with the most development potential according to the most abundant distribution of the resource quantity. Since the 21 st century, the world solar photovoltaic power generation industry has developed rapidly, the market application scale has been expanding, and the role in the development of subsequent energy sources has become more and more important. The photovoltaic module formed by combining a plurality of solar cells is used as a basic photovoltaic power generation unit in a large amount for constructing various photovoltaic power generation systems, or the transparent film module is used as a building curtain wall material to construct an energy-saving environment-friendly building.

The most basic units of a photovoltaic power generation system are photovoltaic modules, which typically consist of solar panels (silicon crystals or other photoelectric conversion devices), module frames, cover glasses and junction boxes. The solar cell module junction box is a connector between a solar cell matrix formed by solar cell modules and a solar charging control device, and is a comprehensive design of a cross-field combining gas collection design, mechanical design and material science. The solar cell module junction box has a main function in the solar module of connecting the power generated by the solar cell with an external line. Therefore, the junction box is a key component of the photovoltaic module to construct various power generation systems.

In practical applications, the photovoltaic modules located at different positions of the photovoltaic system need to use a plurality of junction boxes with different functions, for example: a junction box with an MPPT (Maximum Power Point Tracking ) function, a junction box with a quick shutdown function in an emergency, or a junction box capable of monitoring the operating state of a photovoltaic module, etc. At present, the intelligent junction boxes with different functions have different structures and sizes of circuit boards in the junction boxes due to different designed functional modules, so that the junction box bodies have different structures, and various molds and processes are adopted during production, so that the cost is high and the assembly efficiency is low.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a novel split intelligent junction box, wherein the change of different functions of the junction box is realized through the replaceability of different circuit boards, the layout of the existing components is not changed, the specifications of the junction box are unified, the installation difficulty is not increased, the use of connectors and corresponding wire harnesses can be saved, and the economy is improved.

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

the novel split intelligent junction box comprises a middle junction box, a left junction box and a right junction box, wherein the left junction box is connected with the middle junction box through a first cable, and the right junction box is connected with the middle junction box through a second cable; each junction box comprises a box body and a box cover which can be buckled with the box body; the middle junction box, the left junction box and the right junction box all comprise bypass protection modules; a circuit board is arranged in the box body of the middle junction box, and the circuit board is respectively connected with the first cable and the second cable so as to respectively electrically connect the middle junction box with the left junction box and the right junction box, and the circuit board is also connected with the positive connector and the negative connector through a third cable and a fourth cable;

preferably, the circuit board comprises one or more of an MPPT control module, a quick turn-off module and an intelligent monitoring module.

Preferably, a first positioning structure is arranged in the box body of the intermediate junction box, a second positioning structure is arranged on the circuit board, and the second positioning structure is matched with the first positioning structure.

Preferably, the first positioning structure comprises a positioning column arranged on the bottom surface in the box body of the intermediate junction box and a positioning strip arranged on the inner side wall of the box body of the intermediate junction box, the second positioning structure comprises a positioning hole arranged on the circuit board and a positioning notch arranged on the edge of the circuit board, the structure of the positioning hole is matched with the structure of the positioning column, and the structure of the positioning notch is matched with the structure of the positioning strip.

Preferably, a first connecting area and a second connecting area are arranged on the circuit board, a first connecting piece and a second connecting piece are arranged in the box body of the intermediate junction box, one end of the first connecting piece is connected with the first connecting area, and the other end of the first connecting piece is connected with the first cable; one end of the second connecting piece is connected with the second connecting area, and the other end of the second connecting piece is connected with the second cable.

Preferably, the first connecting piece is riveted or welded with the first cable, and the second connecting piece is riveted or welded with the second cable.

Preferably, a third connecting area and a fourth connecting area are arranged on the circuit board, a third connecting piece and a fourth connecting piece are arranged in the box body of the intermediate junction box, one end of the third connecting piece is connected with the third connecting area, and the other end of the third connecting piece is connected with the third cable; one end of the fourth connecting piece is connected with the fourth connecting area, and the other end of the fourth connecting piece is connected with the fourth cable.

Preferably, the bypass protection module includes positive and negative conductive terminals, and bus bar through holes, bus bar connection regions, and bypass protection elements electrically connected to the positive and negative conductive terminals provided on the conductive terminals.

Preferably, the bypass protection element is a schottky diode or an integrated circuit module having a bypass protection module.

Compared with the prior art, the utility model has the beneficial effects that: in the novel split intelligent junction box, the left junction box and the right junction box are respectively connected with the middle junction box through the cables, circuit boards with different functions can be installed in the middle junction box, and different functions of the junction box are realized through the replacement of different circuit boards by adopting the combination of standardized box bodies and circuit boards with different functions, so that the structures of the junction boxes with different functions are consistent, production dies can be reduced, and the production cost is saved; in addition, the middle junction box is further connected with the first connector and the second connector through cables, the installation difficulty is not increased under the condition that the layout of the existing assembly is not changed, the use of the connectors and corresponding wiring harnesses can be saved, and the economical efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a novel split intelligent junction box according to embodiment 1 of the present utility model.

Fig. 2 is an exploded view of an intermediate junction box of the novel split intelligent junction box of fig. 1.

Fig. 3 is a schematic diagram of an internal structure of an intermediate junction box in the novel split-type intelligent junction box of fig. 1.

In the figure, 100-novel split intelligent junction box, 10-middle junction box, 11-box body, 111-reference column, 112-reference bar, 113-slotted hole, 12-box cover, 13-circuit board, 131-reference hole, 132-reference notch, 133-first connecting area, 134-second connecting area, 135-third connecting area, 136-fourth connecting area, 14-first connecting piece, 15-second connecting piece, 16-third connecting piece, 17-fourth connecting piece, 18-middle bypass protection module, 181-bus bar through hole, 182-bus bar connecting area, 183-bypass diode, 20-left junction box, 21-left bypass protection module, 30-right junction box, 31-right bypass protection module, 40-first cable, 50-second cable, 60-first connector, 70-second cable connector, 80-third cable and 90-fourth cable.

Description of the embodiments

For a further understanding of the objects, construction, features and functions of the utility model, reference should be made to the following detailed description of the preferred embodiments.

Referring to fig. 1 to 3, which are schematic structural views of a novel split-type intelligent junction box according to an embodiment of the present utility model, a novel split-type intelligent junction box 100 of the present utility model includes a middle junction box 10, a left junction box 20 and a right junction box 30, wherein the left junction box 20 is connected with the middle junction box 10 through a first cable 40, and the right junction box 30 is connected with the middle junction box 10 through a second cable 50; each junction box comprises a box body and a box cover which can be buckled with the box body. For example, the intermediate junction box 10 includes a box body 11 and a box cover 12, and the box cover 12 may be fastened to the box body 11. In actual production, corresponding buckling structures can be arranged on the box body 11 and the box cover 12, for example, a clamping hook is arranged at the top end of the side wall of the box body 11, a clamping groove with a corresponding structure is arranged at the edge of the box cover 12, and when the box cover 12 is buckled on the box body 11, the clamping hook and the clamping groove are matched to improve the assembly firmness and the tightness of the junction box.

Referring to fig. 1 to 3, a circuit board 13 is disposed in a box body 11 of the intermediate junction box 10, the circuit board 13 is respectively connected with a first cable 40 and a second cable 50, the circuit board 13 is a replaceable functional circuit board, and can be designed according to different functional modules configured as required by the photovoltaic module. The utility model adopts the combination of the standardized box body and the circuit boards with different functions, and realizes different functions of the junction box through the replacement of the different circuit boards, so that the junction boxes with different functions have consistent structures, the production dies can be reduced, and the production cost can be saved.

In an embodiment, the functional circuit board 13 may be an MPPT control circuit board, and an MPPT control module is disposed on the MPPT control circuit board, which has a maximum power point tracking function, and can implement cascade optimization of a single board group of the photovoltaic module, so as to improve the power generation capability; in another embodiment, the functional circuit board 13 may be a quick-turn-off circuit board, and a quick-turn-off control module is arranged on the quick-turn-off circuit board, so that a quick-turn-off function in an emergency can be realized, output to a safety voltage is reduced, and an electric shock accident is avoided; or in another embodiment, the functional circuit board 13 may be a monitoring circuit board, and an intelligent monitoring module is arranged on the monitoring circuit board, so that real-time working data such as voltage, current, temperature and the like of the photovoltaic module can be returned, and the working state of the photovoltaic module is monitored. In practical application, the intelligent monitoring module can be in communication connection with the control center in a wireless or wired mode, is provided with a voltage, current, temperature and other collectors, can collect working data of the photovoltaic module such as voltage, current, temperature and the like, and transmits the working data to the control center, so that an intelligent monitoring function is realized.

Of course, in other embodiments, functional modules with other functions or an integration of several functional modules may be disposed on the circuit board to meet different control requirements of the photovoltaic system. The standardized box body and the combination of the circuit boards with different functions are adopted, and different functions of the junction box are realized through the replacement of the different circuit boards, so that the economical efficiency is improved.

In the preferred embodiment of the present utility model, the box body 11 of the intermediate junction box 10 is provided with a first positioning structure, and the circuit board 13 is provided with a second positioning structure, and the second positioning structure is matched with the first positioning structure. The circuit board 13 is positioned and installed in the box body 11 through the cooperation of the first positioning structure and the second positioning structure, and the assembly precision is improved.

Referring to fig. 1 to 3, in an embodiment, the first positioning structure includes a positioning post 111 disposed on an inner bottom surface of the box body 11 of the intermediate junction box 10 and a positioning bar 112 disposed on an inner sidewall of the box body 11 of the intermediate junction box 10, the second positioning structure includes a positioning hole 131 disposed on the circuit board 13 and a positioning notch 132 disposed on an edge of the circuit board 13, the structure of the positioning hole 131 is matched with the structure of the positioning post 111, and the structure of the positioning notch 132 is matched with the structure of the positioning bar 112. When the circuit board 13 is assembled into the box body 11 of the intermediate junction box 10, the positioning columns 111 penetrate through the corresponding positioning holes 131, the positioning strips 112 are opposite to the corresponding positioning notches 132, and the efficiency and the accuracy of assembly can be improved by matching the positioning structures. In other embodiments, the first positioning structure and the second positioning structure may also adopt other reasonable structural designs.

Referring to fig. 2 and 3 in combination, a first connection area 133 and a second connection area 134 are provided on the circuit board 13, a first connection member 14 and a second connection member 15 are provided in the box body 11 of the intermediate junction box 10, one end of the first connection member 14 is connected to the first connection area 133, and the other end is connected to the first cable 40; one end of the second connecting member 15 is connected to the second connecting region 134, and the other end is connected to the second cable 50. Optionally, the first connecting piece 14 and the second connecting piece 15 are made of copper, the first connecting piece 14 and the first connecting area 133 of the circuit board 13 are connected by adopting a traditional soldering process, the second connecting piece 15 and the second connecting area 134 of the circuit board 13 are connected by adopting a traditional soldering process, the first connecting piece 14 and the first cable 40 are connected by riveting or welding, and the second connecting piece 15 and the second cable 50 are connected by riveting or welding. In other embodiments, the first connecting member 14, the second connecting member 15, the circuit board and the cable can be reasonably connected. In the embodiment 1 shown in fig. 1 to 3, the first connecting member 14 and the second connecting member 15 are L-shaped connecting structures, and in other embodiments of the present utility model, other reasonable connecting structures may be adopted for the first connecting member 14 and the second connecting member 15, which is not limited in this aspect of the present utility model.

Referring to fig. 1, the novel split intelligent terminal 100 according to the preferred embodiment of the present utility model further includes a first connector 60 and a second connector 70, wherein the first connector 60 is connected to the intermediate terminal 10 through a third cable 80, and the second connector 70 is connected to the intermediate terminal 10 through a fourth cable 90. The first connector 60 and the second connector 70 can realize electrical connection between adjacent photovoltaic modules or photovoltaic modules and other electrical devices. The connector is combined with the function of the junction box, the installation difficulty is not increased under the condition that the layout of the existing assembly is not changed, the use of the connector and the corresponding wire harness can be saved, and the economy is improved.

Specifically, referring to fig. 2, a third connection area 135 and a fourth connection area 136 are provided on the circuit board 13, a third connection member 16 and a fourth connection member 17 are provided in the box body 11 of the intermediate junction box 10, one end of the third connection member 16 is connected to the third connection area 135, and the other end is connected to the third cable 80; one end of the fourth connecting member 17 is connected to the fourth connecting region 136, and the other end is connected to the fourth cable line 90. Optionally, the third connecting piece 16 and the fourth connecting piece 17 are made of copper, the third connecting piece 16 and the third connecting area 135 of the circuit board 13 are connected by adopting a traditional soldering process, the fourth connecting piece 17 and the fourth connecting area 136 of the circuit board 13 are connected by adopting a traditional soldering process, the third connecting piece 16 and the third cable 80 are riveted or welded, and the fourth connecting piece 17 and the fourth cable 90 are riveted or welded. In other embodiments, the third connecting member 16, the fourth connecting member 17, the circuit board 13 and the cable can be reasonably connected. In the embodiment 1 shown in fig. 1 to 3, the third connecting member 16 and the fourth connecting member 17 are linear connecting structures, and in other embodiments of the present utility model, other reasonable connecting structures may be adopted for the third connecting member 16 and the fourth connecting member 17, which is not limited in this aspect of the present utility model.

In an embodiment, the first connector 60 is a negative connector, the second connector 70 is a positive connector, and when the novel split intelligent junction box 100 is applied to the connection of adjacent photovoltaic modules, the negative connector can be connected with the positive connector in the adjacent photovoltaic module on one side, and the positive connector can be connected with the negative connector in the adjacent photovoltaic module on the other side, so that the power connection of the photovoltaic modules is realized. In other embodiments, the structures of the first connector 60 and the second connector 70 may be set appropriately according to actual requirements.

Referring to fig. 1, an intermediate bypass protection module 18 is further disposed in the case 11 of the intermediate junction box 10, and the intermediate bypass protection module 18 includes positive and negative conductive terminals, and bus bar through holes 181, bus bar connection regions 182 and bypass protection elements 183 electrically connected to the positive and negative conductive terminals. Optionally, the middle bypass protection module 18 is made of copper, the bus bar through hole 181 is used for allowing the photovoltaic module sub-string bus bar to pass through, and a slot 113 for allowing the photovoltaic module battery sub-string bus bar to pass through is arranged at the bottom of the box body 11 of the middle junction box 10, referring to fig. 2, corresponding to the position of the bus bar through hole 181; the bus bar connection region 182 is used for being welded with a photovoltaic module sub-cascade bus bar, and the bypass protection element 183 is a schottky diode or an integrated circuit module with a bypass protection module, and is used for bypass protection, and temperature rise and power consumption are reduced.

Similarly, a left bypass protection module 21 is arranged in the box body of the left junction box 20, and the left bypass protection module 21 is connected with the first cable 40; a right bypass protection module 31 is arranged in the box body of the right junction box 30, and the right bypass protection module 31 is connected with the second cable 50. The design of the left and right bypass protection modules is similar to the design of the middle bypass protection module 18 and will not be described in detail herein.

In summary, in the novel split intelligent junction box, the left junction box and the right junction box are similar to the left junction box and the right junction box of the existing split junction box in structure, and are respectively connected with the middle junction box through cables, a functional circuit board is additionally designed and installed in the middle junction box except for a conventional bypass protection module, and different functions of the junction box are realized through replacement of different circuit boards by adopting a standardized combination of a box body and the functional circuit board, so that the structures of the different functional junction boxes are consistent, production dies can be reduced, and production cost is saved; in addition, the middle junction box is further connected with the first connector and the second connector through cables, so that production and installation difficulties of the assembly are not increased under the condition that the layout of the existing assembly is not changed, the connectors and the corresponding wire harnesses can be saved, and economical efficiency is improved.

The utility model has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the utility model. It should be noted that the disclosed embodiments do not limit the scope of the utility model. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (9)

1. The novel split intelligent junction box is characterized by comprising a middle junction box, a left junction box and a right junction box, wherein the left junction box is connected with the middle junction box through a first cable, and the right junction box is connected with the middle junction box through a second cable; each junction box comprises a box body and a box cover which can be buckled with the box body; the middle junction box, the left junction box and the right junction box all comprise bypass protection modules; the box body of middle terminal box is equipped with the circuit board in, the circuit board with first cable conductor the second cable conductor is connected respectively thereby with middle terminal box and left terminal box and right terminal box electricity respectively be connected, the circuit board still is connected with positive, negative connector through third cable conductor, fourth cable conductor.

2. The novel split intelligent junction box of claim 1, wherein the circuit board comprises one or more of an MPPT control module, a quick turn-off module and an intelligent monitoring module.

3. A novel split intelligent junction box according to claim 1 or 2, wherein a first positioning structure is arranged in the box body of the intermediate junction box, a second positioning structure is arranged on the circuit board, and the second positioning structure is matched with the first positioning structure.

4. The novel split intelligent junction box according to claim 3, wherein the first positioning structure comprises a positioning column arranged on the bottom surface in the box body of the intermediate junction box and a positioning strip arranged on the inner side wall of the box body of the intermediate junction box, the second positioning structure comprises a positioning hole arranged on the circuit board and a positioning notch arranged on the edge of the circuit board, the structure of the positioning hole is matched with the structure of the positioning column, and the structure of the positioning notch is matched with the structure of the positioning strip.

5. The novel split intelligent junction box according to claim 1 or 2, wherein a first connecting area and a second connecting area are arranged on the circuit board, a first connecting piece and a second connecting piece are arranged in the box body of the intermediate junction box, one end of the first connecting piece is connected with the first connecting area, and the other end of the first connecting piece is connected with the first cable; one end of the second connecting piece is connected with the second connecting area, and the other end of the second connecting piece is connected with the second cable.

6. The novel split intelligent junction box according to claim 5, wherein the first connecting piece is riveted or welded with the first cable, and the second connecting piece is riveted or welded with the second cable.

7. The novel split intelligent junction box according to claim 1 or 2, wherein a third connecting area and a fourth connecting area are arranged on the circuit board, a third connecting piece and a fourth connecting piece are arranged in the box body of the intermediate junction box, one end of the third connecting piece is connected with the third connecting area, and the other end of the third connecting piece is connected with the third cable; one end of the fourth connecting piece is connected with the fourth connecting area, and the other end of the fourth connecting piece is connected with the fourth cable.

8. A novel split intelligent junction box according to claim 1 or 2, wherein the bypass protection module comprises positive and negative conductive terminals, bus bar through holes arranged on the conductive terminals, bus bar connection areas and bypass protection elements electrically connected with the positive and negative conductive terminals.

9. The novel split intelligent junction box of claim 8, wherein said bypass protection element is a schottky diode or an integrated circuit module having a bypass protection module.