CN216162667U

CN216162667U - Unsettled photovoltaic terminal box in box body bottom

Info

Publication number: CN216162667U
Application number: CN202122200147.3U
Authority: CN
Inventors: 刘良; 项治平; 濮旭彬
Original assignee: Zhejiang Forsol Energy Co ltd
Current assignee: Zhejiang Forsol Energy Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-04-01
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to the field of photovoltaic equipment, in particular to a photovoltaic junction box with a suspended bottom, which comprises: the middle shaft terminal box is electrically connected with the middle shaft terminal box; the negative terminal box, the middle shaft terminal box and the positive terminal box all comprise box bodies, the bottom of each box body is provided with a rubber guide plate protruding towards the inner cavity, and each rubber guide plate is provided with a guide groove communicated with the inner cavity; lead the offset plate both ends and be equipped with the hanging piece, the hanging piece sets firmly in the box body bottom, the hanging piece includes left hanging piece and right hanging piece, the right side inclined end face of left hanging piece is connected and is led the offset plate and form and overflow gluey district one, the left side inclined end face of right hanging piece is connected and is led the offset plate and form and overflow gluey district two, the glue that the busbar spilled over can be along the slope to overflow to the excessive gluey district one and overflow gluey district two of both sides outward, prevent protruding production, prevent that the warpage condition after the photovoltaic terminal box installation from producing.

Description

Unsettled photovoltaic terminal box in box body bottom

Technical Field

The utility model relates to the field of photovoltaic equipment, in particular to a photovoltaic junction box with a suspended bottom.

Background

At present, the opening at the leading-out position of the bus bar on the photovoltaic module is a round hole, and the situation of glue overflow is caused, so that the position is raised. The bottom of the box body of the photovoltaic junction box produced at present is a plane, and the photovoltaic junction box assembled with the photovoltaic assembly is warped left and right.

To sum up, for solving the deficiency among the prior art, need design the unsettled photovoltaic terminal box in simple structure's box body bottom.

SUMMERY OF THE UTILITY MODEL

The utility model provides a photovoltaic junction box with a suspended bottom in order to solve the problems in the prior art.

The purpose of the utility model can be realized by the following technical scheme: a photovoltaic junction box with a suspended box bottom comprises:

the connecting structure comprises a negative terminal box, a middle shaft terminal box and a positive terminal box, wherein one end of the negative terminal box is electrically connected with a negative cable, and one end of the positive terminal box is electrically connected with a positive cable;

the negative terminal box, the middle shaft terminal box and the positive terminal box all comprise box bodies, the bottom of each box body is provided with a rubber guide plate protruding towards the inner cavity, and each rubber guide plate is provided with a guide groove communicated with the inner cavity;

the glue guiding plate is characterized in that suspension blocks are arranged at two ends of the glue guiding plate and fixedly arranged at the bottom of the box body, a first lower end face of each suspension block is positioned below a second lower end face of the glue guiding plate, each suspension block comprises a left suspension block and a right suspension block, a first glue overflowing area is formed by connecting a right inclined end face of the left suspension block with the glue guiding plate, and a second glue overflowing area is formed by connecting a left inclined end face of the right suspension block with the glue guiding plate.

The improved structure is characterized in that the negative terminal box, the middle shaft terminal box and the positive terminal box further comprise a module diode assembly and a bus bar, an upper cover matched with the upper end of the box body is clamped on the upper end of the box body, the module diode assembly is arranged in the inner cavity, and the bus bar is connected with the module diode assembly.

In a further improvement, the negative terminal box is provided with a negative indicating groove, and the positive terminal box is provided with a positive indicating groove.

In a further improvement, the module diode component comprises a module diode and a copper sheet, and the module diode component is provided with a mounting hole.

In a further improvement, the bus bar is connected with the modular diode assembly by welding.

Compared with the prior art, the hanging blocks which are symmetrical to each other are arranged at the lower ends of the box bodies of the negative terminal box, the middle shaft terminal box and the positive terminal box in the photovoltaic terminal box with the hanging bottom of the box body, so that the lower end of the rubber guide plate is hung in the hanging state with the mounting plane, after glue is poured into the guide groove, glue overflowing from the bus bar can overflow to the glue overflow area I and the glue overflow area II on two sides along the inclined surface, the generation of bulges is prevented, the generation of warping after the photovoltaic terminal box is mounted is prevented, and the use stability of the whole equipment is improved.

Drawings

FIG. 1 is a schematic structural diagram of a top view of the present invention

FIG. 2 is a schematic structural view of the present invention

FIG. 3 is a schematic view of a partial cross-sectional structure of the present invention

FIG. 4 is a schematic view of the internal part of the present invention

FIG. 5 is a schematic structural diagram of a modular diode assembly according to the present invention

FIG. 6 is a schematic view of the bottom of the negative terminal box of the present invention

In the figure, 1-negative terminal box, 11-negative indicating groove, 2-middle shaft terminal box, 3-positive terminal box, 31-positive indicating groove, 5-rubber guide plate, 51-guide groove, 52-lower end face two, 6-suspending block, 61-lower end face one, 62-left suspending block, 621-right inclined end face, 622-rubber overflow area one, 63-right suspending block, 631-left inclined end face, 632-rubber overflow area two, 71-box body, 72-upper cover, 721-inner cavity, 73-module diode component, 732-mounting hole, 733-module diode, 734-copper sheet and 74-bus bar.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solution of the present invention is further described below with reference to the following embodiments and accompanying drawings 1 to 6.

Example 1

A photovoltaic terminal box that box bottom is unsettled includes:

the cable comprises a negative terminal box 1, a middle shaft terminal box 2 and a positive terminal box 3, wherein one end of the negative terminal box 1 is electrically connected with a negative cable, and one end of the positive terminal box 3 is electrically connected with a positive cable;

the negative terminal box 1, the middle-axis terminal box 2 and the positive terminal box 3 all comprise box bodies 71, rubber guide plates 5 protruding towards the inner cavity 721 are arranged at the bottoms of the box bodies 71, and the rubber guide plates 5 are provided with guide grooves 51 communicated with the inner cavity 721;

the two ends of the rubber guide plate 5 are provided with suspension blocks 6, the suspension blocks 6 are fixedly arranged at the bottom of the box body 71, the first end face 61 of the suspension block 6 is positioned below the second end face 52 of the rubber guide plate 5, the suspension block 6 comprises a left suspension block 62 and a right suspension block 63, the right inclined end face 621 of the left suspension block 62 is connected with the rubber guide plate 5 to form a first rubber overflow area 622, and the left inclined end face 631 of the right suspension block 63 is connected with the rubber guide plate 5 to form a second rubber overflow area 632.

The photovoltaic junction box comprises a negative terminal box 1, a middle shaft terminal box 2 and a positive terminal box 3, wherein the negative terminal box 1 is connected with a negative cable of a photovoltaic cell panel, the positive terminal box 3 is connected with the positive cable of the photovoltaic cell panel, the mutual distance between the cell panel and a cell panel circuit during engineering installation is greatly shortened, the direct wire outgoing mode not only reduces cable loss, but also reduces the loss of generated energy caused by wire length, the assembly power is improved, and the split type terminal box has a better heat dissipation effect than an integrated terminal box.

As shown in fig. 3, the suspending blocks 6 are symmetrically arranged at the lower ends of the box bodies 71 of the negative terminal box 1, the middle shaft terminal box 2 and the positive terminal box 3, so as to ensure that the lower end of the rubber guide plate 5 is suspended from the installation plane.

Specifically, when the junction box is installed, the first 61 lower end face of the suspension block 6 contacts the installation plane, and the first 61 lower end face of the suspension block 6 is located below the second 52 lower end face of the rubber guide plate 5, so that the second 52 lower end face can be ensured to be suspended, after glue is poured into the guide groove 51, glue overflowing from the bus bar can overflow to the first 622 overflow glue area and the second 632 overflow glue area on two sides along the inclined surface, a bulge is prevented from being generated between the first 61 lower end face and the installation plane, the warping condition after the photovoltaic junction box is installed is prevented, and the use stability of the whole device is improved.

As a further preferred embodiment, the negative terminal box 1, the middle-axis terminal box 2, and the positive terminal box 3 further include a module diode assembly 73 and a bus bar 74, the upper end of the box body 71 is clamped with the upper cover 72, the upper cover is matched with the upper cover, the module diode assembly 73 is disposed in the inner cavity 721, and the bus bar 74 is connected with the module diode assembly 73. The upper end of the box body 71 is clamped with the upper cover 72 which is matched with the upper end of the box body, so that the waterproofness of the junction box is improved.

In a further preferred embodiment, the negative terminal box 1 is provided with a negative indicating groove 11, and the positive terminal box 3 is provided with a positive indicating groove 31. As shown in fig. 1, the external appearance of the junction box is similar, and the installation directions of the module diode assemblies 73 in the junction box are different, so that the photovoltaic assembly can be damaged due to installation errors, and the installation personnel can quickly and accurately connect the junction box with the photovoltaic assembly through the cathode indicating groove 11 on the cathode junction box 1 and the anode indicating groove 31 on the anode junction box 3.

As a further preferred embodiment, the module diode assembly 73 includes a module diode 733 and a copper sheet 734, and the module diode assembly is provided with a mounting hole 732. As shown in fig. 5, the module diode assembly 73 is integrated on a copper sheet, so that the installation is convenient and fast, the module diode assembly 73 is directly installed in the box body 71, a single diode is not required to be welded on the copper sheet 734, and then the box body 41 is installed, thereby improving the production efficiency.

As a further preferred embodiment, the bus bars 74 are connected to the modular diode assemblies 73 by soldering. The welding connection is resistance welding, the resistance welding is firmer in connection with tin soldering, the heating time of the resistance welding is short, the heat is concentrated, the heat affected zone is small, and the module diode assembly is prevented from being deformed and damaged to influence the normal use of the module diode assembly.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a unsettled photovoltaic terminal box in box bottom which characterized in that includes:

the negative terminal box, the middle shaft terminal box and the positive terminal box all comprise box bodies,

the bottom of the box body is provided with a rubber guide plate protruding towards the inner cavity, and the rubber guide plate is provided with a guide groove communicated with the inner cavity;

2. The box bottom-suspended photovoltaic junction box as claimed in claim 1, wherein the negative junction box, the middle-axis junction box and the positive junction box further comprise a module diode assembly and a bus bar, the upper end of the box body is clamped with an upper cover which is matched with the upper cover, the module diode assembly is arranged in the inner cavity, and the bus bar is connected with the module diode assembly.

3. The box bottom-suspended photovoltaic junction box of claim 1, wherein a negative indicating groove is formed in the negative junction box, and a positive indicating groove is formed in the positive junction box.

4. The box bottom-suspended photovoltaic junction box of claim 2, wherein the module diode assembly comprises a module diode and a copper sheet, and the module diode assembly is provided with a mounting hole.

5. The box bottom-suspended photovoltaic junction box of claim 2, wherein the bus bar is connected to the modular diode assembly by welding.