WO2013116961A1

WO2013116961A1 - Solar photovoltaic junction box assembly

Info

Publication number: WO2013116961A1
Application number: PCT/CN2012/000283
Authority: WO
Inventors: 刘玉柱
Original assignee: 乐清市信达利实业有限公司
Priority date: 2012-02-06
Filing date: 2012-03-07
Publication date: 2013-08-15
Also published as: CN102544157A

Abstract

Disclosed is a solar photovoltaic junction box assembly, comprising: a junction box that comprises a body and a conductive portion, the conductive portion being connected with a cable outside the junction box and then encapsulated inside the body through injection molding; and a cable connector that comprises a male plug-in element and a female plug-in element that are fitted with each other. The male plug-in element/female plug-in element is connected with the junction box through cables. The male plug-in element comprises a connector body and a plug; after being connected with the cable, the plug is integrally formed with the connector body through injection molding. The male plug-in element comprises a connector body and a plug bush; after being connected with the cable, the plug bush is integrally formed with the connector body through injection molding. The solar photovoltaic junction box assembly solves the problem of complex assembly and high manufacturing cost of the solar photovoltaic junction box in the prior art.

Description

Solar photovoltaic junction box assembly

The invention belongs to the field of solar panel power generation, and particularly relates to a solar photovoltaic junction box assembly.

Background technique

The solar photovoltaic junction box assembly is an important component in solar photovoltaic power generation systems for delivering electrical energy from clean solar panels. Solar photovoltaic junction box assemblies typically include a junction box body, a cable, and a cable connector. In the manufacturing process of the existing solar photovoltaic junction box assembly, the junction box body and the cable connector need to be separately assembled, and then connected to the cable separately. Due to the large number of components of the junction box and the cable connector, a complete junction box and cable connector are required through subsequent assembly. The manufacturing and assembly of the components is troublesome, the process is rather cumbersome, the automatic production is inconvenient, and the manufacturing cost is high. Therefore, providing a solar photovoltaic junction box assembly with simple production process and low cost has become a technical problem to be solved by those skilled in the art.

Chinese patent CN102263148A discloses a solar photovoltaic module junction box, wherein the junction box body is provided with an electrical part connecting the cable, and the connection part of the electric part and the cable line is injection-molded and packaged in the junction box body; the process is simple and the manufacturing cost is low, but The patent document does not disclose the connection between the cable and the cable connector; Chinese Patent CN201717437U discloses a solar photovoltaic module connector including a male insert and a female insert, the female insert including an upper cover, a pin, a socket, Rear cover, fixed ring; Male inserts include rear cover, retaining ring, plug, and insert sleeve. Wherein, the socket and the pin of the female insert are integrally injection molded, and the plug of the male insert is integrally injection molded with the insert; however, the cable needs to be fixed in the rear cover through the fixing ring and then connected to the pin/inserted sleeve. The entire cable connector manufacturing process still needs to process at least 4 kinds of parts, and then manually complete the assembly, the production process is cumbersome and the production efficiency is low; and the connection reliability and sealing performance of the cable and the pin during assembly require high processing. Accuracy is guaranteed and manufacturing costs are still high. At present, there is no solar photovoltaic junction box assembly with relatively simple production process and relatively low manufacturing cost.

Summary of the invention

Therefore, the technical problem to be solved by the present invention is that the prior art has complicated molding and high manufacturing cost, and further provides a solar photovoltaic junction box assembly with lower production cost.

In order to solve the above technical problem, a solar photovoltaic junction box assembly of the present invention includes: a junction box, the junction box includes a body and a conductive portion, and the conductive portion is connected with a cable outside the junction box, and then is injection molded and packaged. And a cable connector comprising a mating male insert and a female insert; the male insert/female insert and the junction box are respectively connected by a cable, the male insert comprising a connector body and a plug, After the plug is connected to the cable, integrally molded with the connector body; the female card includes a connector body and a socket, the socket and the socket After the cable is connected, it is integrally molded with the connector body.

The conductive portion includes a conductive member respectively disposed at two ends of the body and a diode disposed between the conductive members; the cable wire is riveted with the conductive member and injection molded integrally with the body.

The conductive member is connected to the diode.

The conductive member is a copper sheet.

The junction box is sealed with potting glue, and is sealed and connected to the upper cover. .

A spring 圏 is connected to the insert sleeve of the female insert.

The male insert further includes a male insert sleeve, and the male insert sleeve is snap-connected with the connector body;

The female insert further includes a female insert sleeve, and the female insert sleeve is snap-connected with the connector body.

a latching structure is disposed on the outer peripheral surface of the connector body at two places in the plugging direction, and a card slot structure is disposed at a corresponding position of the inner peripheral surface of the male insert sleeve/female insert sleeve to realize the connector body and a snap connection between the male insert sleeve/female insert sleeve.

A 0-type sealing ring is disposed between the connector body and the male insert sleeve/female insert sleeve to achieve a sealed connection.

The above technical solution of the present invention has the following advantages over the prior art:

1. The invention adopts a single injection molding process on the connection of the shell of the junction box and the cable, and the connection between the shell of the cable connector and the cable, and the number of parts is higher than the existing wiring on the market. Box parts are still about 50% less, ensuring maximum material savings under the premise of ensuring product quality. The number of molds is reduced during the mold processing, the structure is simple, and the manufacturing cycle greatly reduces the indirect energy consumption of personnel and machines. In the process of production operation, the staff is reduced in equipment, the equipment is simple, and the space of the site is reduced. The operability is strong in the implementation of large-scale production and post-use automation equipment.

2. The invention fully considers the material saving, adopts a compact junction box, and the filling area is uniform and narrowed; and the main parts are injection-molded into one integrated process, so that the conductive parts of the product parts are large, the contact area of the conductive parts is large, and the connection is reliable and stable. , greatly increasing the service life of the junction box.

3. The cable connector of the invention is integrally injection-molded with the cable, and the cable of the prior art is connected with the cable connector by plugging, and the product has higher IP protection level, longer life, more stable performance and the like. Features.

4. The plug-in sleeve of the cable connector of the invention is connected with the connector body by a snap-on method, and the assembly process is simple, as long as it is locked in place, no extra excessive fitting is required, and the assembly cycle and the economy are greatly reduced. The equipment. Both cost and product performance are well controlled.

DRAWINGS

In order to make the content of the present invention easier to understand, the present invention will be further described in detail below with reference to the accompanying drawings 1 is a schematic structural view of a solar photovoltaic junction box assembly;

2 is a schematic view showing an injection molding structure of a junction box body and a conductive portion;

Figure 3 is a cross-sectional view of the male insert;

Figure 4 is a cross-sectional view of the female insert.

The reference numerals in the figure are indicated as:

1-terminal box 2 - cable line 3 - male insert 4 - female insert 11 - body 12 - diode Π - conductive member 14 - upper cover 31 - connector body 32-0 type sealing ring 33 - plug 34 - male insert sleeve 41 - Sealing ring 42 - Spring ring 43 - Insert sleeve 44 - Female insert sleeve

detailed description

The invention will be further illustrated by the following examples in conjunction with the accompanying drawings.

1 is a solar photovoltaic junction box assembly of the present invention, comprising a junction box 1 and a cable connector electrically connected to the junction box 1 via a cable 2, the cable connector including a mating male insert 3 and a female insert 4; The male insert 3/female insert 4 and the junction box 1 are respectively connected by a cable 2 .

The junction box 1 includes a body 11 and a conductive portion, and the conductive portion includes a conductive member 13 respectively disposed at two ends of the body 11 and a diode 12 disposed between the conductive members 13; the cable 2 and the conductive portion After the piece 12 is riveted, it is injection molded integrally with the body 11. In the embodiment, the conductive member 13 is a copper sheet, and the width of the copper sheet is slightly smaller than the width of the body. The contact area of the copper piece is ensured to be large and the connection is stable. The conductive member 13 is soldered to the diode 12. After welding, the body 11 is sealed with a potting compound. It is connected to the upper cover 14.

The male insert 3 includes: a connector body 31 and a plug 33. After the plug 33 is connected to the cable 2, the plug body 33 is integrally molded with the connector body 31; the male insert 3 further includes a male insert sleeve 34. The male insert sleeve 34 is snap-connected with the injection molded connector body 31. The inner peripheral surface of the male insert sleeve 34 is provided with two card slots, and the snap connection of the two buckles is provided at a corresponding position on the outer peripheral surface of the connector body 31. The snap connection can ensure that it is locked in place, and no extra excessive fitting is required. The connector body 31 and the male insert sleeve 34 are provided with a 0-type sealing ring 32 for sealing connection.

The female insert 4 includes a connector body 31 and a socket 43. After the plug sleeve 43 is connected to the cable 2, the insert body 43 is integrally injection molded with the connector body 31. A spring ring 42 is connected to the insert sleeve 43 of the female insert 3 for making the contact between the plug 33 and the insert sleeve 43 tighter, and the electrical connection between the male insert 4 and the female insert 3 is realized. The female insert 4 further includes a female insert sleeve 44, and the female insert sleeve 44 is snap-connected with the connector body 31. The inner peripheral surface of the female insert sleeve 44 is provided with two card slots, and the snap connection of the two buckles is provided at a corresponding position of the outer peripheral surface of the connector body 31. The 0-type sealing ring 32 is disposed between the connector body 31 and the female insert sleeve 44. Sealed connection. A sealing groove is provided in the outer circumference of the female insert sleeve 44. When the male insert 3 is inserted into the female insert 4, the female insert sleeve 44 and the male insert sleeve 34 are sealed by a sealing ring 41 provided in the sealing groove.

When manufacturing the solar photovoltaic junction box assembly, the two cable wires 2 are first riveted to the two conductive members 13 respectively, placed in the junction box molding die, integrally molded with the body 11, and then the diode 12 is soldered to the two conductive members. Between 13 and then fill the potting glue, after curing, connect with the upper cover 14; the junction box is partially installed.

The other end of the cable after the injection molding of the junction box is riveted or crimped with the plug 33 and the socket 43 to which the spring coil 42 is connected, and then integrally molded with the connector body 31, and then separately sleeved. The upper insert sleeve 34 and the female insert sleeve 44 complete the assembly of the entire junction box assembly. The entire assembly is simple, most of them are realized by machines, the production cost is reduced, and large-scale production can be carried out.

It is apparent that the above-described embodiments are merely illustrative of the examples, and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations here. Obvious changes or variations resulting therefrom are still within the scope of the invention.

Claims

Claim

A solar photovoltaic junction box assembly comprising:

a junction box (1), the junction box (1) includes a body (11) and a conductive portion, and the conductive portion is connected to a cable (2) outside the junction box and then injection-molded inside the body (11);

And a cable connector comprising a mating male insert (3) and a female insert (4); the male insert (3)

The female insert (4) and the junction box (1) are respectively connected by a cable (2), characterized in that: the male insert (3) comprises a connector body (31) and a plug (33), the plug (33) after being connected to the cable (2), being integrally molded with the connector body (31);

The female insert (4) includes a connector body (31) and a socket (43), and the socket (43) is connected to the cable (2) and is integral with the connector body (31) Injection molding.

2. The solar photovoltaic junction box assembly according to claim 1, wherein: said conductive portion comprises a conductive member (13) respectively disposed at both ends of said body (11) and disposed between said conductive members (13) The diode (12); the cable (2). is riveted with the conductive member (12) and injection molded with the body (11).

3. The solar photovoltaic junction box assembly of claim 2, wherein:

The conductive member (13) is soldered to the diode (12).

The solar photovoltaic junction box assembly according to claim 2 or 3, characterized in that the conductive member (13) is a copper sheet.

The solar photovoltaic junction box assembly according to any one of claims 1 to 4, characterized in that: the junction box (1) is sealed with a potting glue, and is sealed and connected to the upper cover (14).

6. Solar photovoltaic wiring assembly according to any of claims 1-5, characterized in that - a spring ring (42) is connected to the socket (43) of the female insert (3).

The solar photovoltaic junction box assembly according to any one of claims 1 to 6, wherein: the male insert (3) further comprises a male insert sleeve (34), the male insert sleeve (34) and the Connector body (31) snap connection;

The female insert (4) further includes a female insert sleeve (44), and the female insert sleeve (44) is snap-fitted with the connector body (31).

8. The solar photovoltaic junction box assembly of claim 7, wherein:

The outer peripheral surface of the connector body (31) is provided with a snap structure at two places in the plugging direction, and a card slot is disposed at a corresponding position of the inner peripheral surface of the male insert sleeve (34) / female insert sleeve (44) Structure, implementing the connection A snap connection between the body (31) and the male insert sleeve (34) / female insert sleeve (44).

9. The solar photovoltaic junction box assembly according to any one of claims 1-8, characterized in that: the connector body (31) is arranged between the male insert sleeve (34) / the female insert sleeve (44) The Type 0 seal (32) provides a sealed connection.