Low-resistance photovoltaic junction box

Abstract

The utility model discloses a low resistance photovoltaic junction box, which relates to the photovoltaic junction box field, and comprises a junction housing and a conversion controller fixedly arranged in the junction housing, the inner side of the junction housing is provided with a peripheral rubber shell and an inner rubber shell, the peripheral rubber shell is sleeved on the outer side of the inner rubber shell, and the inner rubber shell is sleeved on the outer side of the inner rubber shell. The inner surrounding rubber shell is arranged on the outer side of the conversion controller in a sleeving mode. The utility model discloses a novel wiring device, which comprises a wiring outer shell, an inner peripheral rubber shell and a separation groove are arranged in the wiring outer shell, the upper end of the outer peripheral rubber shell and the upper end of the inner peripheral rubber shell are jointly provided with a transition plate, the upper end of the transition plate is fixedly provided with an upper peripheral rubber shell, and the upper end of the wiring outer shell is provided with an upper cover. Therefore, the glue wall can be directly broken off, disassembly of the upper cover is not affected after glue is injected into the wiring shell, and when the upper cover is disassembled, corresponding old glue can be replaced, glue can be injected again, the overall service life of the wiring shell is prolonged, and the sealing effect of the glue wall is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic junction box field, especially in low resistance photovoltaic junction box. BACKGROUND

[0002] Low resistance photovoltaic junction box has the junction box with low contact resistance characteristics, is mainly used in solar photovoltaic system, plays the connection and protection function, as the connector, leads out the current generated by solar module and imports to the electric equipment, plays the bridge function, has the multiple protection function such as preventing hot spot effect, waterproof fire prevention, heat dissipation cooling, effectively protects the battery piece and assembly, reduces the loss of power of assembly to leakage current;

[0003] When low resistance photovoltaic junction box is used, photovoltaic assembly and electric equipment are connected through connecting wire, in order to guarantee the sealing property of low resistance photovoltaic junction box, waterproof, basically, after completing the junction of junction box, fills the sealant in the box, prevents air, moisture, dust and other components that influence the work of junction box to enter, but after injecting sealant, when the junction box is maintained or detected, it is difficult to carry out, seriously affects the service life of junction box;

[0004] Therefore, it is necessary to provide low resistance photovoltaic junction box to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model discloses a low resistance photovoltaic junction box, to solve the problem of the use of the junction box after the glue is installed.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: low resistance photovoltaic junction box, including junction shell and the conversion controller of fixed setting in the junction shell, the junction shell inside is equipped with the peripheral rubber shell and the inner rubber shell, the peripheral rubber shell is equipped with the inner rubber shell outside, the inner rubber shell is equipped with the conversion controller outside;

[0007] The upper end of the peripheral rubber shell and the inner rubber shell is equipped with the transition plate in common, the upper end of the transition plate is equipped with the upper rubber shell, the upper end of the upper rubber shell is clamped to the upper cover of the junction shell, and the upper cover is installed.

[0008] The upper and lower ends of the transition plate are provided with two separation grooves.

[0009] Preferably, the junction shell inside is equipped with a plurality of connecting wires for connecting the conversion controller, and a plurality of circular holes for connecting wires are provided on the peripheral rubber shell and the inner rubber shell.

[0010] Preferably, the lower end of the transition plate is fixedly provided with two extension plates, one of the extension plates is abutted to the inner side of the peripheral rubber shell, and the other extension plate is abutted to the outer side of the inner rubber shell.

[0011] Preferably, the extension plate is arranged in a broken manner, and the broken part of the extension plate is coincided with the position of the separation groove.

[0012] Preferably, the inner side of the separation groove, the inner side of the upper glue shell and the outer side of the extension plate are coated with isolation paint.

[0013] Preferably, the upper end of the upper cover is provided with a glue injection hole, and the glue injection hole is communicated with the upper glue shell and the separation groove.

[0014] Preferably, the circular hole and the connecting line are gap-fitted.

[0015] The technical effects and advantages of the utility model are as follows:

[0016] 1. When the wiring shell needs to be detected and maintained, the glue at the separation groove is relatively weak, so the separation groove can be directly broken, and the upper cover can be disassembled after the glue is injected into the wiring shell, and the corresponding old glue can be replaced to re-inject glue, thereby prolonging the overall service life of the wiring shell and the sealing effect of the glue wall.

[0017] 2. When the glue is injected, part of the glue will run out through the gap between the circular hole and the connecting line, and the run-out glue will automatically act as a protective layer to protect the position of the connecting line connected to the circular hole. When the glue is injected, the connecting line, an important part, can be protected synchronously, and it is particularly suitable for low-resistance photovoltaic wires with a thin outer protective layer.

[0018] 3. The glue enters a glue wall formed between the outer glue shell and the inner glue shell, and the glue wall can ensure that the conversion controller is completely isolated from the outside environment, and can also form a temperature insulation layer to prevent the high temperature outside in summer from affecting the conversion controller. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a low-resistance photovoltaic junction box structure schematic diagram of the utility model.

[0020] Figure 2 It is an upper cover disassembly structure schematic diagram of the utility model.

[0021] Figure 3 It is a wiring shell inner side structure schematic diagram of the utility model.

[0022] Figure 4 It is a transition plate structure schematic diagram of the utility model.

[0023] Figure 5 It is an extension plate structure schematic diagram of the utility model.

[0024] In the figure: 1, wiring shell; 2, connecting wire; 3, upper cover; 4, conversion controller; 5, peripheral glue shell; 6, inner glue shell; 7, transition plate; 8, upper glue shell; 9, extension plate; 10, round hole; 11, glue injection hole; 12, separation groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] The utility model provides a low resistance photovoltaic junction box as shown in Figure 1 - Figure 5 The low resistance photovoltaic junction box as shown in the figure includes a wiring shell 1 and a conversion controller 4 fixedly arranged in the wiring shell 1. The conversion controller 4 is prior art, mainly used for the conversion and connection of electric energy between photovoltaic solar panels and electrical appliances, which will not be described in detail here. The inner side of the wiring shell 1 is provided with a plurality of connecting wires 2 for connecting the conversion controller 4. The connecting wire 2 is a low resistance photovoltaic transmission line. In order to ensure low resistance, the protective shell on the outside of the low resistance photovoltaic transmission line is generally thin to reduce heat during power transmission. The connecting wire 2 is prior art, which will not be described in detail here.

[0027] An upper cover 3 is installed on the upper end of the wiring shell 1. The upper cover 3 is mainly used to cooperate with the wiring shell 1. The connection mode of the upper cover 3 and the wiring shell 1 is clamping. The clamping structure is not shown in the figure and is prior art, which will not be described in detail here. A glue injection hole 11 is formed on the upper end of the upper cover 3. The operator injects glue into the inside of the wiring shell 1 through the glue injection hole 11. A peripheral glue shell 5 and an inner glue shell 6 are installed on the inner side of the wiring shell 1. The peripheral glue shell 5 is sleeved on the outer side of the inner glue shell 6. The inner glue shell 6 is sleeved on the outer side of the conversion controller 4.

[0028] The upper end of the outer rubber shell 5 and the inner rubber shell 6 is provided with a transition plate 7, and the upper end of the transition plate 7 is fixedly provided with an upper surrounding rubber shell 8. The lower surface of the upper cover 3 is clamped to the upper end of the upper surrounding rubber shell 8. The clamping mode is the prior art, and will not be described in detail here. Two separation grooves 12 are formed through the upper and lower ends of the transition plate 7. The glue injection hole 11 is in communication with the separation groove 12 and the upper surrounding rubber shell 8. The sealing glue injected by the operator enters the inside of the upper surrounding rubber shell 8, and the upper surrounding rubber shell 8 increases the connection strength between the upper cover 3 and the wiring shell 1. The glue enters the inside of the separation groove 12 through the upper surrounding rubber shell 8, and then enters the space between the outer rubber shell 5 and the inner rubber shell 6 through the separation groove 12. A glue wall is formed between the outer rubber shell 5 and the inner rubber shell 6. Through the arrangement of the glue wall, the conversion controller 4 and the outside can be completely isolated, and a temperature insulation layer can also be formed to prevent the high temperature outside in summer from affecting the conversion controller 4.

[0029] A plurality of circular holes 10 for connecting the connecting wire 2 are formed through the upper end of the outer rubber shell 5 and the inner rubber shell 6. The circular hole 10 and the connecting wire 2 are in gap cooperation. Through the arrangement of the gap cooperation, part of the glue will run out through the gap between the circular hole 10 and the connecting wire 2 during glue injection. The run-out glue will automatically act as a protective layer to protect the position of the connecting wire 2 connected to the circular hole 10 after solidification. During glue injection, the important part of the connecting wire 2 can be protected synchronously.

[0030] The lower end of the transition plate 7 is fixedly provided with two extension plates 9. One of the extension plates 9 abuts against the inner side of the outer rubber shell 5, and the other extension plate 9 abuts against the outer side of the inner rubber shell 6. The extension plate 9 is arranged in a broken manner. The broken part of the extension plate 9 coincides with the position of the separation groove 12. The inner side of the separation groove 12, the inner side of the upper surrounding rubber shell 8, and the outer side of the extension plate 9 are coated with isolation paint. The isolation paint mainly reduces the adhesion of the glue to the coated area such as the separation groove 12, and facilitates the removal of the upper cover 3.

[0031] Through the separation groove 12 arranged on the transition plate 7, when the inside of the wiring shell 1 needs to be detected and maintained, the glue at the separation groove 12 is relatively weak, so it can be directly broken. After the inside of the wiring shell 1 is injected with glue, it does not affect the disassembly of the upper cover 3. The old glue in the upper surrounding rubber shell 8 is closest to the outer side, so it is most affected by the outside. When the upper cover 3 is disassembled, the corresponding old glue can also be replaced and re-injected, thereby prolonging the overall service life of the wiring shell 1 and the sealing effect of the glue wall.

Claims

1. Low resistance photovoltaic junction box comprising a junction housing (1) and a conversion controller (4) fixedly arranged in the junction housing (1), characterized in that: The wiring shell (1) is internally provided with a peripheral rubber shell (5) and an inner rubber shell (6), the peripheral rubber shell (5) is sleeved outside the inner rubber shell (6), and the inner rubber shell (6) is sleeved outside the conversion controller (4); The upper ends of the peripheral rubber shell (5) and the inner rubber shell (6) are jointly provided with a transition plate (7), the upper end of the transition plate (7) is fixedly provided with an upper rubber shell (8), the upper end of the upper rubber shell (8) is clamped by the upper cover (3), and the upper cover (3) is arranged on the upper end of the wiring shell (1); The transition plate (7) is provided with two separation grooves (12) penetrating the upper and lower ends thereof.

2. The low resistance photovoltaic junction box of claim 1, wherein: The wiring shell (1) is internally provided with a plurality of connecting lines (2) for connecting the conversion controller (4), and a plurality of circular holes (10) for the connecting lines (2) to pass through are penetratingly arranged on the peripheral rubber shell (5) and the inner rubber shell (6).

3. The low resistance photovoltaic junction box of claim 1, wherein: The lower end of the transition plate (7) is fixedly provided with two extension plates (9), one of the extension plates (9) abuts against the inner side of the peripheral rubber shell (5), and the other extension plate (9) abuts against the outer side of the inner rubber shell (6).

4. The low resistance photovoltaic junction box of claim 3, wherein: The extension plate (9) is arranged in a disconnected manner, and the disconnected position of the extension plate (9) coincides with the position of the separation groove (12).

5. The low resistance photovoltaic junction box of claim 1, wherein: The inner side of the separation groove (12), the inner side of the upper rubber shell (8) and the outer side of the extension plate (9) are coated with isolation paint.

6. The low resistance photovoltaic junction box of claim 1, wherein: The upper end of the upper cover (3) is provided with a glue injection hole (11), the glue injection hole (11) is in communication with the upper rubber shell (8) and the separation groove (12).

7. The low resistance photovoltaic junction box of claim 2, wherein: The circular hole (10) and the connecting line (2) are in gap fit.

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