CN203312344U

CN203312344U - Conjunction box

Info

Publication number: CN203312344U
Application number: CN2013203661897U
Authority: CN
Inventors: 高艳杰; 董建华; 肖永欣
Original assignee: Yingli Group Co Ltd
Current assignee: Yingli Group Co Ltd
Priority date: 2013-06-24
Filing date: 2013-06-24
Publication date: 2013-11-27
Anticipated expiration: 2023-06-24

Abstract

The utility model provides a conjunction box. The conjunction box comprises a box body, a plurality of protective circuits and a plurality of metal joints, wherein the plurality of protective circuits are arranged in the box body and are in one-to-one correspondence connection with a plurality of converging belts on a photovoltaic assembly, the plurality of metal joints are arranged in the box body and are in one-to-one correspondence electrical connection with the plurality of protective circuits, and avoiding notches are arranged on the box body and located in correspondence to the metal joints. The conjunction box provided by the utility model solves the problem that an output voltage of a conjunction box is single in the prior art.

Description

Terminal box

Technical field

The utility model relates to the photovoltaic cell technical field, in particular to a kind of terminal box.

Background technology

Terminal box, as the link of photovoltaic module output, is the bridge that is communicated with photovoltaic module and electrical appliance.In the prior art; the connection line arranged in terminal box as shown in Figure 1; as can be seen from the figure; convergent belt on photovoltaic module is introduced in terminal box by convergent belt introduction hole 1'; and convergent belt is connected with protective circuit by the terminals 2' of protective circuit; make the protective circuit energising, then be electrically connected to external connection electrical apparatus by the output 3' on protective circuit, electrical equipment is powered.Due to the requirement that arranges of protective circuit, terminal box of the prior art only has one group of output, can't regulate output voltage.

In addition, the concentrated setting of the diode 4' of the series connection on protective circuit makes the caloric value of terminal box larger, and heating is more concentrated, and the loss that brings electric energy power, even burn out terminal box and cause that assembly burns, and affects the use of photovoltaic module.

The utility model content

The utility model aims to provide a kind of terminal box, to solve the single problem of output voltage of terminal box in prior art.

To achieve these goals, according to an aspect of the present utility model, provide a kind of terminal box, having comprised: box body; A plurality of protective circuits, be arranged in box body, and a plurality of protective circuits are connected correspondingly with a plurality of convergent belts on photovoltaic module, and a plurality of metal joints, be arranged in box body, and a plurality of metal joints are electrically connected to correspondingly with a plurality of protective circuits; Wherein, on box body, the position of corresponding metal joint offers and dodges breach.

Further, protective circuit comprises two connectors that are oppositely arranged and is connected to two diodes between connector.

Further, the first end of metal joint is electrically connected to connector.

Further, terminal box of the present utility model also comprises the insulative water-proof lid, and insulative water-proof lid lid is located at the second end of metal joint.

Further, box body comprises: matrix, be cuboid, and matrix comprises diapire and a plurality of interconnective side plate, and a plurality of side plates surround spatial accommodation, and the first end of a plurality of side plates all is connected with diapire, and the second end of a plurality of side plates forms opening surface; Top cover, be connected to the opening surface place of matrix.

Further, on diapire, the position of corresponding protective circuit offers introduction hole.

Further, dodging breach is arranged on in a plurality of side plates.

Further, be provided with the side plate of dodging breach and the side plate that is oppositely arranged with this side plate on be provided with a plurality of holddown grooves, on top cover, be provided with the fixed part suitable with holddown groove.

Further, between matrix and top cover, be provided with sealing ring.

In the technical solution of the utility model; on box body, offer the breach of dodging of dodging metal joint; the inside of box body is provided with a plurality of protective circuits; one side of protective circuit is electrically connected to one to one with the convergent belt on photovoltaic module; the another side of the protective circuit metal joint corresponding with this protective circuit position is electrically connected to so that metal joint and with the corresponding convergent belt of this metal joint between by protective circuit, be electrically connected to.Owing between each convergent belt, having voltage difference, therefore between every two metal joints, all can form one group of output port, and the difference according to voltage difference between metal joint, each is organized output port and has different output voltages, has solved the single problem of output voltage of terminal box of the prior art.

The accompanying drawing explanation

The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 shows the structural representation of terminal box of the prior art;

Fig. 2 shows according to the structural representation of the embodiment mono-of terminal box of the present utility model (not shown top cover);

Fig. 3 shows the front view of the terminal box of Fig. 2;

Fig. 4 shows the vertical view of the terminal box of Fig. 3;

Fig. 5 shows the structural representation (in figure, end illustrates top cover) according to the embodiment bis-of terminal box of the present utility model;

Fig. 6 shows the front view of the terminal box of Fig. 5; And

Fig. 7 shows the vertical view of the terminal box of Fig. 6.

The Reference numeral of above-mentioned accompanying drawing is as follows:

10, box body; 11, matrix; 111, the first side plate; 112, holddown groove; 113, diapire; 12, top cover; 121, fixed part; 13, sealing ring; 21, metal joint; 22, insulative water-proof lid; 31, connector; 32, diode; 40, introduction hole; 1', convergent belt introduction hole; 2', terminals; 3', output; 4', diode.

Embodiment

It should be noted that, in the situation that do not conflict, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.

Fig. 2 to Fig. 4 shows the structural representation of embodiments of the invention one; as can be seen from the figure; the terminal box of the present embodiment comprises box body 10, protective circuit and metal joint 21; wherein; protective circuit and metal joint 21 all are arranged in box body 10; protective circuit one side is electrically connected to one to one with the convergent belt on photovoltaic module, with its position corresponding metal joint 21 be electrically connected on one side, so that metal joint 21 and obtain between convergent belt corresponding with this metal joint 21 are electrically connected to.For ease of metal joint 21 and extraneous being communicated with, the position of corresponding metal joint 21 offers and dodges breach on box body 10.Owing between convergent belt, having voltage difference, so all can form one group of output port between every two metal joints 21 in the present embodiment, and form different voltage differences according to the difference of the selection of two metal joints 21, finally become the output of multiple voltage.

In embodiment mono-; protective circuit comprises two connectors 31 and is connected to two diodes 32 between connector 31; each connector 31 is connected with a convergent belt; and each connector 31 is electrically connected to the first end of metal joint 21 so that metal joint 21 by connector 31 with conflux charged being connected.Preferably; in embodiment mono-; between adjacent protective circuit, has certain distance; so that have certain distance between the diode 32 on each protective circuit; between each diode 32, larger spatial placement can be conducive to the heat radiation of diode 32 and the heat radiation of each diode 32 is not exerted an influence to the heat radiation of remaining diode 32; avoid concentrating of heat; reduced the caloric value of terminal box when work; prevent the local overheating of terminal box; and the phenomenon that burns out diode of having avoided local overheating to cause; simultaneously, reduced the probability that burns of terminal box.

Preferably, for ease of the protection to metal joint 21, the second end of metal joint 21 wears out the breach of dodging of offering on box body 10, and is provided with insulative water-proof lid 22 at the second end cap of metal joint 21.

Preferably, box body 10 comprises matrix 11 and top cover 12.Wherein, matrix 11 is rectangle, and matrix 11 comprises diapire 113 and a plurality of interconnective side plate, and a plurality of side sheet rooms are surrounded by spatial accommodation, and the first end of a plurality of side plates all is connected with diapire 113, and the second end of a plurality of side plates forms opening surface.In spatial accommodation, accommodate aforesaid protective circuit and metal joint 21.Top cover 12 is connected to the opening surface place, and oneself is locked in protective circuit and metal joint 21 in spatial accommodation.The rectangle setting of matrix has enlarged the distance on spatial accommodation flower matrix length direction, is beneficial to the separation setting of each protective circuit, strengthens the spacing between each protective circuit.

The terminal box of embodiment mono-is connected on the backboard of photovoltaic module by diapire 113; the position of corresponding protective circuit also offers introduction hole 40 on diapire 113, and the convergent belt on photovoltaic module is incorporated in spatial accommodation and is connected with connector 31 by this introduction hole 40.

On one in a plurality of side plates, offer the above-mentioned breach of dodging, this has the side plate of dodging breach is the first side plate 111.On the lateral surface of the first side plate 111 and the side plate that is oppositely arranged with the first side plate, be provided with fixing grain 112, on top cover 12, be provided with this holddown groove 112 and think adaptive fixed part 121, top cover 12 is by being connected at the opening surface place between fixed part 121 and holddown groove 112.For guaranteeing the compactness of

matrix

11 and 12 connections of top cover, also be provided with sealing ring 13 between matrix 11 and top cover 12.Preferably, the first side plate 111 is the side plate extended along the matrix length direction.

Fig. 5 to Fig. 7 shows the structural representation of embodiment bis-of the present utility model, embodiment bis-is with the difference of embodiment mono-, holddown groove 112 in embodiment bis-be arranged on the first side plate 111 and the inner surface of the side plate that is oppositely arranged with the first side plate 111 on, the fixed part 121 on top cover 12 has also been done corresponding change.The matrix 11 of embodiment bis-, with after top cover 12 is connected, can't observe holddown groove 112 and fixed part 121 from outside, promoted the aesthetics of terminal box.

The foregoing is only preferred embodiment of the present utility model and oneself, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.

Claims

1. a terminal box, is characterized in that, comprising:

Box body (10);

A plurality of protective circuits, be arranged in described box body (10), and a plurality of described protective circuits are connected correspondingly with a plurality of convergent belts on photovoltaic module,

A plurality of metal joints (21), be arranged in described box body (10), and a plurality of described metal joints (21) are electrically connected to correspondingly with a plurality of described protective circuits;

Wherein, the position of the upper corresponding described metal joint (21) of described box body (10) offers and dodges breach.

2. terminal box according to claim 1, is characterized in that, described protective circuit comprises two connectors (31) that are oppositely arranged and is connected to the diode (32) between two described connectors (31).

3. terminal box according to claim 2, is characterized in that, the first end of described metal joint (21) is electrically connected to described connector (31).

4. terminal box according to claim 3, is characterized in that, also comprises insulative water-proof lid (22), and described insulative water-proof lid (22) lid is located at the second end of described metal joint (21).

5. terminal box according to claim 1, is characterized in that, described box body (10) comprises

Matrix (11); be cuboid; described matrix (11) comprises diapire (113) and a plurality of interconnective side plate; a plurality of described side plates surround spatial accommodation; the first end of a plurality of described side plates all is connected with described diapire (113), and the second end of a plurality of described side plates forms opening surface;

Top cover (12), be connected to the opening surface place of described matrix (11).

6. terminal box according to claim 5, is characterized in that, the position of the upper corresponding described protective circuit of described diapire (113) offers introduction hole (40).

7. terminal box according to claim 5, is characterized in that, the described breach of dodging is arranged on in a plurality of described side plates.

8. terminal box according to claim 7, it is characterized in that, on the side plate that is provided with described described side plate of dodging breach and is oppositely arranged with this side plate, be provided with a plurality of holddown grooves (112), on described top cover (12), be provided with the fixed part (121) suitable with described holddown groove (112).

9. terminal box according to claim 5, is characterized in that, is provided with sealing ring (13) between described matrix (11) and described top cover (12).