Photovoltaic junction box

Abstract

The present application relates to the field of photovoltaic accessories, especially photovoltaic junction box. Photovoltaic junction box, including box body and box cover, the box body is equipped with MOS diode a and MOS diode b, MOS diode a is connected with MOS diode b through conductor a, MOS diode b lower part is connected with conductor b, MOS diode a is in the middle of conductor c, the left side of conductor c is connected with photovoltaic cable, the lower part of conductor c is connected with photovoltaic cable, the left side of conductor d is connected with photovoltaic cable, the lower part of conductor d is connected with photovoltaic cable, and photovoltaic cable is connected with photovoltaic connector. The beneficial effects of the present application are: in order to facilitate the parallel connection of photovoltaic module and without additional increase three-way connection device and effectively reduce the cost, use MOS diode, the heat generation is extremely low, the power consumption is extremely low, select one or more MOS diode series, for protecting the backflow current.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic accessories, and in particular photovoltaic junction boxes. Background Technology

[0002] Currently, the conversion of solar energy into electrical energy has been widely used, and the junction box, as the core component for converting solar energy into electrical energy, is receiving increasing attention. In some cases, it is necessary to add a T-junction device, which increases costs. Summary of the Invention

[0003] To address the technical problem of needing to add a T-connector and increasing costs, this invention provides a photovoltaic junction box.

[0004] The technical solution of the present invention is as follows: A photovoltaic junction box includes a box body and a box cover. The box body contains a MOS diode a and a MOS diode b. MOS diode a and MOS diode b are interconnected through a conductor a. The lower part of MOS diode b is connected to conductor b. MOS diode a is located in the middle of conductor c. A photovoltaic cable is connected to the left side of conductor c and to the lower part of conductor c. A photovoltaic cable is connected to the left side of conductor d and to the lower part of conductor d. The photovoltaic cable is connected to a photovoltaic connector.

[0005] The photovoltaic cable is provided with a wire locking block a on the outside.

[0006] The conductor c is L-shaped, with insertion holes at both ends and in the middle.

[0007] The conductor d is L-shaped with holes in the middle and at the bottom, and the conductor b is L-shaped with holes in the middle and at the bottom.

[0008] The insertion hole is fixed on the corresponding insertion post of the box body.

[0009] The conductors c and d are provided with connection ports at both ends.

[0010] The technical solution of this invention has a novel structure and a clever and simple design. In order to facilitate the parallel connection of photovoltaic modules without the need for additional three-way connection devices and effectively reduce costs, MOS diodes are used. These diodes have extremely low heat generation and power consumption. One or more MOS diodes are selected and connected in series to protect against backflow current. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 , 3 4, 5, 6, and 7 are schematic diagrams of the structure of an embodiment of the present invention. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0013] like Figure 1 , 2 The photovoltaic junction box shown in Figures 3, 4, and 5 includes a box body 1 and a box cover 7. The box body 1 contains a MOS diode a2 and a MOS diode b8. The MOS diode a2 is connected to the MOS diode b8 through a conductor a9. The lower part of the MOS diode b8 is connected to a conductor b10. The MOS diode a2 is in the middle of a conductor c3. A photovoltaic cable is connected to the left side of the conductor c3 and to the lower part of the conductor c3. A photovoltaic cable is connected to the left side of the conductor d11 and to the lower part of the conductor d11. The photovoltaic cable is connected to a photovoltaic connector 4.

[0014] The photovoltaic cable is provided with a wire locking block a6 on the outside.

[0015] The conductor c3 is L-shaped, with sockets at both ends and in the middle.

[0016] The conductor d11 is L-shaped with holes in the middle and at the bottom, and the conductor b10 is L-shaped with holes in the middle and at the bottom.

[0017] The insertion hole is fixed on the corresponding insertion post of the box body 1.

[0018] The conductors c3 and d11 are provided with connection ports at both ends, and the connection ports are connected to photovoltaic cables.

[0019] When using, such as Figure 6 , 7The photovoltaic connector shown is a three-way connector, including a cover 21 and a connector housing 25. The connector housing 25 has a horizontal mounting position, on which photovoltaic cables a32 and b33 are placed. Photovoltaic cable a32 is connected to connecting wire a29 in the middle via a rivet a24, and photovoltaic cable b33 is connected to connecting wire b35 in the middle via a rivet b34. Connecting wire a29 is sleeved on a pin 31, and connecting wire b35 is sleeved on a socket 27. The socket 27 is provided with a locking ring 30. The cover 21 covers the photovoltaic cables a32 and b33. The socket 27 is provided with an O-ring seal 26 and a drum spring 28. The photovoltaic cables a32 and b33 are provided with a lock. The wire clamping block 23 is equipped with a buckle 17. The connector housing 25 is equipped with a slot 16 for the buckle 17 to engage. The lower part of the connector housing 25 is equipped with a tube a and a tube b. The outer wall of the wire clamping block b23 has a recess, and the clamping strip is located in the recess. The notch and the protrusion on the connector housing 25 cooperate. The three-way connector combines the originally independent positive and negative terminals into one. The three-way connector is more complex and has more components than ordinary connectors. This structure integrates the three-way connection function by building in the circuit, which facilitates the parallel connection of photovoltaic modules. It is not necessary to add an extra three-way connection device and cable to the junction box. For more applications, it can be used externally. One or more MOS diodes can be selected in series to protect against backflow current.

[0020] It should be understood that the above description is only a preferred embodiment of the present invention and is not sufficient to limit the technical solution of the present invention. For those skilled in the art, within the spirit and principles of the present invention, additions, subtractions, substitutions, transformations or improvements can be made based on the above description, and all such additions, subtractions, substitutions or improvements should fall within the protection scope of the appended claims of the present invention.

Claims

1. A photovoltaic junction box, comprising a box body (1) and a box cover (7), characterized in that: The housing (1) contains a MOS diode a (2) and a MOS diode b (8). The MOS diode a (2) is connected to the MOS diode b (8) via a conductor a (9). The lower part of the MOS diode b (8) is connected to the conductor b (10). The MOS diode a (2) is located in the middle of the conductor c (3). The left side of the conductor c (3) is connected to the photovoltaic cable, and the lower part of the conductor c (3) is connected to the photovoltaic cable. The left side of the conductor d (11) is connected to the photovoltaic cable, and the lower part of the conductor d (11) is connected to the photovoltaic cable. The photovoltaic cable is connected to the photovoltaic connector (4). The conductor c (3) is L-shaped with sockets at both ends and in the middle. The conductor d (11) is L-shaped with sockets at the middle and bottom. The conductor b (10) is L-shaped with sockets at the middle and bottom. The conductor c (3) and conductor d (11) have connection ports at both ends. The photovoltaic connector is a three-way connector, including a cover (21) and a connector housing (25). The connector housing (25) has a horizontal mounting position, on which a light source is placed. A photovoltaic cable a (32) and a photovoltaic cable b (33) are connected in the middle by a rivet a (24) to a connecting wire a (29), and in the middle by a rivet b (33) to a connecting wire b (35). The connecting wire a (29) is fitted on a pin (31), and the connecting wire b (35) is fitted on a socket (27). The socket (27) is provided with a retaining ring (30). A cover (21) is placed on top of the photovoltaic cables a (32) and b (33). The socket (27) The socket (27) is provided with an O-ring seal (26) and a drum spring (28). The photovoltaic cable a (32) and photovoltaic cable b (33) are provided with a wire locking block (23). The wire locking block (23) is provided with a buckle (17). The connector housing (25) is provided with a buckle (16) for the buckle (17) to be inserted. The lower part of the connector housing (25) is provided with a pipe a and a pipe b. The outer wall of the wire locking block b (23) has a recess, and the pressure strip is just in the recess position. The notch and the protrusion on the connector housing (25) are matched.

2. The photovoltaic junction box according to claim 1, characterized in that: The photovoltaic cable is provided with a wire locking block a (6) on the outside.

3. The photovoltaic junction box according to claim 1, characterized in that: The insertion hole is fixed on the corresponding insertion post of the box body (1).

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