Field-assemblable two-core busbar connection system for photovoltaic power generation

Abstract

The utility model discloses a two core bus connection system of on -the -spot assembly for photovoltaic power generation, including a plurality of board end two core male head bus connector, a plurality of wire end two core female head bus connector and wire end two core male head bus connector, wherein a plurality of board end two core male head bus connector can be assembled to the micro inverter of different photovoltaic power generation board respectively, a plurality of wire end two core female head bus connector is connected through two core bus series connection between, and the wire end two core female head bus connector of first is docked wire end two core male head bus connector, and the wire end two core female head bus connector of remaining is docked a plurality of board end two core male head bus connector, wire end two core male head bus connector is used for connecting distribution box, the utility model discloses the form of split on -the -spot recombination, because split structure volume is smaller, and the weight is light, and the on -the -spot installation and carrying are convenient.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a field-assembleable two-core bus connection system for photovoltaic power generation. Background Technology

[0002] In the photovoltaic industry, two-core buses are typically used to connect photovoltaic modules and inverters to achieve power transmission and control. However, the vast majority of two-core buses currently on the market are prefabricated using factory-coated molds, with two wires emerging from each coated end. A single set of these wires requires dozens or even hundreds of connectors to connect multiple micro-inverters in a grid-connected system. However, the finished strings produced in this way are indivisible, large in size, and very heavy, causing significant inconvenience for on-site installation and handling. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a field-assembleable two-core bus connection system for photovoltaic power generation.

[0004] To achieve the above objectives, the present invention provides a field-assembleable two-core bus connection system for photovoltaic power generation, comprising multiple board-side two-core male bus connectors, multiple line-side two-core female bus connectors, and line-side two-core male bus connectors; wherein, The multiple board-end two-core male bus connectors can be assembled into micro-inverters located on different photovoltaic panels; The plurality of female wire-end two-core bus connectors are connected in series via the two-core bus, and the first female wire-end two-core bus connector is connected to the male wire-end two-core bus connector, while the remaining female wire-end two-core bus connectors are connected to the plurality of male board-end two-core bus connectors respectively. The two-core male bus connector at the wire end is used to connect to the distribution box.

[0005] Optionally, the board-end two-core male bus connector includes two board-end contact pins and a board-end adhesive core; one end of each of the two board-end contact pins is provided with a solder end, and the other end is disposed inside the board-end adhesive core.

[0006] Optionally, the two-core female bus connector includes a female end housing, two female contact pins, a female end housing, a locking sealing ring, and a locking nut; wherein,

[0007] The two female contact pins are inserted into the outer shell of the female rubber core through the female end crown spring;

[0008] The female end rubber core shell is combined with one end of the female end shell;

[0009] The other end of the female end shell is connected to the locking nut via a locking sealing ring.

[0010] Optionally, a mating sealing ring is provided at the position where the female end rubber core shell and the outside are connected.

[0011] Optionally, the female end core housing is connected to one end of the female end housing via a housing sealing ring.

[0012] Optionally, the locking seal ring includes a single-wire seal ring and a double-wire seal ring; wherein, the two-core female connector connected to the two-core male connector uses a single-wire seal ring, and the other two-core female connectors use double-wire seal rings.

[0013] Optionally, the two female contact pins are locked in place by screws.

[0014] Optionally, the two-core male bus connector includes a male end housing, two male end contact pins, a housing sealing ring, a male end housing, a locking sealing ring, and a locking nut; wherein, the two male end contact pins are inserted into the male end housing and are engaged with one end of the male end housing; the other end of the male end housing is engaged with the locking nut through the locking sealing ring.

[0015] Optionally, the male end core housing is connected to one end of the male end housing via a housing sealing ring.

[0016] Optionally, the two male contact pins are locked together by screws.

[0017] The two-core bus connection system for photovoltaic power generation provided by this utility model adopts a split and reassembled form, which transfers the connection system that originally had to be prefabricated in the factory using rubber-coated molds to the construction site of the photovoltaic power plant for processing; due to the small size and light weight of the split structure, it is easy to install and transport on site. Attached Figure Description

[0018] Figure 1 This is a structural diagram of a two-core bus connection system according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the board-end two-core male bus connector of this utility model;

[0020] Figure 3 This is a connection diagram of the board-end two-core male bus connector and the wire-end two-core female bus connector of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the two-core female bus connector of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the two-core male bus connector of this utility model.

[0023] Figure 6 This is a connection diagram of the two-core female bus connector and the two-core male bus connector of this utility model. Detailed Implementation

[0024] like Figure 1 As shown, the present invention provides a field-assembleable two-core bus connection system for photovoltaic power generation, including a board-end two-core male bus connector 1, a line-end two-core female bus connector 2, and a line-end two-core male bus connector 3.

[0025] Multiple board-side two-core male bus connectors 1 are included, and can be assembled into microinverters connected to different photovoltaic panels. Multiple line-side two-core female bus connectors 2 are also included, which can be used to connect to either board-side two-core male bus connectors 1 or line-side two-core male bus connectors 3. In actual assembly, the multiple line-side two-core female bus connectors 2 are connected in series via two-core buses. The first line-side two-core female bus connector 2 is used to connect to the line-side two-core male bus connector 3. The remaining line-side two-core female bus connectors 2 are used to connect to multiple board-side two-core male bus connectors 1, thus enabling multiple microinverters to be connected in series and grid-connected. The line-side two-core male bus connectors 3 are used to connect to the distribution box.

[0026] In one embodiment of this utility model, as follows: Figure 2 and Figure 3 As shown, the board-side two-core male bus connector 1 includes two board-side contact pins 11 and a board-side adhesive core 12. One end of each board-side contact pin 11 is provided with a soldering end, which can be soldered onto the circuit board of the micro-inverter. The other end is a insertion end 112, which is inserted into the board-side adhesive core 12. The board-side adhesive core 12 is a mating connector used for mating with the wire-side two-core female bus connector 2.

[0027] In one embodiment of this utility model, as follows: Figure 4 As shown, the two-core female bus connector 2 includes a female end plastic core shell 21, two female end contact pins 22, a female end shell 23, a locking seal ring 24, and a locking nut 25; the two female end contact pins 22 are inserted into the female end plastic core shell 21 through a female end crown spring; one end of the female end plastic core shell 21 is connected to one end of the female end shell 23; the other end of the female end shell 23 is connected to the locking nut 25 through the locking seal ring 24.

[0028] Here, the locking seal 24 includes a single-wire seal and a double-wire seal. The figure shows a double-wire seal, while the single-wire seal has a single-hole structure (not shown in the figure). Specifically, the two-core female bus connector 2 connected to the two-core male bus connector 3 uses a single-wire seal, while the remaining two-core female bus connectors 2 use double-wire seals.

[0029] Preferably, a mating sealing ring 26 is provided at the position where the female end rubber core shell 21 mates with the outside.

[0030] Preferably, the female end core housing 21 is connected to one end of the female end housing 23 through the housing sealing ring 27.

[0031] In one embodiment of this utility model, as follows: Figure 5 As shown, the two-core male bus connector 3 includes a male end housing 31, two male end contact pins 32, a male end housing 33, a locking sealing ring 34, and a locking nut 35. The two male end contact pins 32 are locked together by screws. The two male end contact pins 32 are inserted into the male end housing 31 and are engaged with one end of the male end housing 33. The other end of the male end housing 33 is engaged with the locking nut 35 via the locking sealing ring 34. Preferably, the male end housing 31 is engaged with one end of the male end housing 33 via a housing sealing ring 36. Figure 6 As shown, during use, the plastic core ends of the two-core female bus connector 2 and the two-core male bus connector 3 can be mated together to achieve connection between the two ends.

[0032] The field-assembleable two-core bus connection system for photovoltaic power generation provided by this utility model includes the following features in specific applications:

[0033] The two-core male bus connector 1 is inserted during the assembly of the micro inverter. In field applications, the micro inverter with the two-core male bus connector 1 pre-installed is installed under each photovoltaic panel.

[0034] Next, several micro-inverters are connected in series using a two-core female bus connector 2 with a double-wire sealing ring. At the first position of each bus, a two-core female bus connector 2 with a single-wire sealing ring is used. The assembly of each connector can be done on-site according to the installation position of the micro-inverter, with the wire length determined, or the wire length can be determined and then mass-produced in the factory.

[0035] Then, the wire from the last micro-inverter can be directly led to the distribution box. In this invention, a preferred method is to use a combination of a two-core female bus connector 2 with a single-wire sealing ring and a two-core male bus connector 3 to create an extension cable leading to the distribution box. Connector assembly can be done on-site or in a factory.

[0036] In summary, the two-core bus connection system for photovoltaic power generation provided by this utility model can be assembled on-site, which is a so-called modular and reconfigurable form. This allows the connection system, which originally required prefabrication in the factory using rubber-coating molds, to be transferred to the photovoltaic power plant construction site for processing. Furthermore, due to its smaller size and lighter weight, the modular structure facilitates on-site installation and transportation, and this utility model is also compatible with the original factory-prefabricated rubber-coating mold method.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A field-assembleable two-core bus connection system for photovoltaic power generation, characterized in that, This includes multiple board-side two-core male bus connectors, multiple wire-side two-core female bus connectors, and wire-side two-core male bus connectors; among which... The multiple board-end two-core male bus connectors can be assembled into micro-inverters located on different photovoltaic panels; The plurality of female wire-end two-core bus connectors are connected in series via the two-core bus, and the first female wire-end two-core bus connector is connected to the male wire-end two-core bus connector, while the remaining female wire-end two-core bus connectors are connected to the plurality of male board-end two-core bus connectors respectively. The two-core male bus connector at the wire end is used to connect to the distribution box.

2. The field-assembleable two-core bus connection system for photovoltaic power generation according to claim 1, characterized in that, The board-end two-core male bus connector includes two board-end contact pins and a board-end adhesive core; one end of each of the two board-end contact pins is provided with a solder end, and the other end is located inside the board-end adhesive core.

3. The field-assembleable two-core bus connection system for photovoltaic power generation according to claim 1, characterized in that, The two-core female bus connector includes a female end housing, two female contact pins, a female end housing, a locking sealing ring, and a locking nut; wherein... The two female contact pins are inserted into the outer shell of the female rubber core through the female end crown spring; The female end rubber core shell is combined with one end of the female end shell; The other end of the female end shell is connected to the locking nut via a locking sealing ring.

4. The field-assembleable two-core bus connection system for photovoltaic power generation according to claim 3, characterized in that, A sealing ring is provided at the position where the outer shell of the female end rubber core meets the outside.

5. The field-assembleable two-core bus connection system for photovoltaic power generation according to claim 3, characterized in that, The female end rubber core shell is connected to one end of the female end shell through a shell sealing ring.

6. The field-assembleable two-core bus connection system for photovoltaic power generation according to claim 3, characterized in that, The locking seal ring includes a single-wire seal ring and a double-wire seal ring; wherein, the two-core female bus connector connected to the two-core male bus connector at the wire end adopts a single-wire seal ring, and the other two-core female bus connectors at the wire end adopt a double-wire seal ring.

7. The field-assembleable two-core bus connection system for photovoltaic power generation according to claim 3, characterized in that, The two female contact pins are locked together by screws.

8. The field-assembleable two-core bus connection system for photovoltaic power generation according to claim 1, characterized in that, The two-core male bus connector includes a male end housing, two male end contact pins, a housing sealing ring, a male end housing, a locking sealing ring, and a locking nut; wherein, the two male end contact pins are inserted into the male end housing and are engaged with one end of the male end housing; the other end of the male end housing is engaged with the locking nut through the locking sealing ring.

9. The field-assembleable two-core bus connection system for photovoltaic power generation according to claim 8, characterized in that, The male end rubber core shell is connected to one end of the male end shell through a shell sealing ring.

10. The field-assembleable two-core bus connection system for photovoltaic power generation according to claim 8, characterized in that, The two male contact pins are locked together with screws.

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