CN210745078U

CN210745078U - Solar photovoltaic module junction box

Info

Publication number: CN210745078U
Application number: CN201922391958.9U
Authority: CN
Inventors: 王薇珲
Original assignee: Wei Hui Wang
Current assignee: Wei Hui Wang
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-06-12
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a solar photovoltaic module terminal box, terminal box include casing and upper cover, the inside both ends of casing are fixed with the electric conductor respectively, every the both ends of electric conductor are connected with the cable conductor respectively, every the tip of cable conductor all assembly connector, two through diode welded fastening in the middle of the electric conductor, the inside pouring sealant layer that has played sealed waterproof effect of terminal box. The utility model mainly solves the problem of a junction box suitable for tile components, the cable is welded with a conductor after being bent, and only one welding spot is provided, thereby effectively reducing the contact resistance; the diode is bent and formed, so that pulling damage is avoided; the installation is swift convenient, is connected with tile subassembly battery through the connector, and follow-up in case the terminal box became invalid, but quick replacement terminal box can, need not dismantle the tile subassembly.

Description

Solar photovoltaic module junction box

Technical Field

The utility model belongs to the technical field of the terminal box, concretely relates to solar PV modules terminal box.

Background

The solar photovoltaic cell is a device for directly converting solar radiation energy into electric energy, and the photovoltaic module is a product formed by connecting a plurality of photovoltaic cells in series and parallel and then packaging, and is a basic unit in a photovoltaic power generation system. The photovoltaic module junction box is a key device for introducing electric energy generated by a solar photovoltaic cell into a power supply system. The junction box has the advantages that reliable connection of circuits is guaranteed, connection between a conductor inside the junction box and the photovoltaic module bus bar must be reliable and stable to achieve the connection, contact impedance is lowest, installation is rapid and reliable, and follow-up maintenance is convenient.

The special subassembly to the tile formula, a slice is arranged on the roof, and installation space is narrow and small, puts forward higher requirement to product reliability simultaneously, needs quick maintenance to the terminal box in case the problem appears moreover.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solar PV modules terminal box to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a solar photovoltaic module terminal box, the terminal box includes casing and upper cover, the inside both ends of casing are fixed with the electric conductor respectively, every the both ends of electric conductor are connected with the cable conductor respectively, every the tip of cable conductor all assembles the connector, two through diode welded fastening in the middle of the electric conductor, there is the pouring sealant layer that plays sealed waterproof effect inside the terminal box.

Preferably, the casing is provided with a clamping table and an ultrasonic welding groove, and is further provided with one or more glue pouring holes and glue overflowing holes, the casing is internally provided with a fixing column for fixing the conductor, a fool-proof rib for preventing the conductor from being reversely installed and a blocking rib for preventing the conductor from being short-circuited, and one blocking rib is provided with a groove.

Preferably, the upper cover is provided with an ultrasonic welding rib and a buckle, the top of the upper cover is provided with a clamping groove for fixing a cable, and the upper cover is internally provided with a plastic rib for preventing the upper cover from being reversely assembled.

Preferably, the conductor is provided with a fixing hole, a fool-proof groove and a lug boss for welding the cable and the diode.

Preferably, the cable line comprises an insulating layer and a copper conductor, and the copper conductor is bent into a U-shaped structure after the insulating layer is stripped from the middle.

Preferably, the diode comprises a body and pins, and the two pins are bent to form a right angle, so that the diode is prevented from being damaged when being pulled.

The utility model discloses a technological effect and advantage:

the utility model mainly solves the problem of a junction box suitable for tile components, the cable is welded with a conductor after being bent, and only one welding spot is provided, thereby effectively reducing the contact resistance; the diode is bent and formed, so that pulling damage is avoided; the installation is swift convenient, is connected with tile subassembly battery through the connector, and follow-up in case the terminal box became invalid, but quick replacement terminal box can, need not dismantle the tile subassembly.

Drawings

Fig. 1 is a perspective view of a tile solar photovoltaic module junction box and an installation method thereof according to the present invention;

fig. 2 is a perspective view of another angle of the junction box of the tile solar photovoltaic module and the installation method thereof according to the present invention;

FIG. 3 is a perspective view of the housing of the present invention;

fig. 4 is a perspective view of the housing of the present invention at another angle;

FIG. 5 is a perspective view of the upper cover of the present invention;

fig. 6 is a perspective view of the upper cover of the present invention at another angle;

FIG. 7 is a perspective view of the electrical conductor of the present invention;

fig. 8 is a perspective view of the conductive cable of the present invention;

fig. 9 is a perspective view of the diode of the present invention.

In the figure: 1. the device comprises a shell, an upper cover 2, a conductor 3, a cable 4, a connector 5, a diode 6, a sealant 7, a clamping table 11, an ultrasonic welding groove 12, a sealant 13 hole, a sealant overflow hole 14, a fixing column 15, a foolproof rib 16, a blocking rib 17, a welding rib 18, a welding rib 21, a buckle 22, a clamping groove 23, a plastic rib 24, a fixing hole 31, a foolproof groove 32, a boss 33, an insulating layer 41, a copper conductor 42, a U-shaped structure 43, a body 61 and a pin 62.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 9, a junction box for a solar photovoltaic module includes a housing 1 and an upper cover 2, the housing 1 is provided with a clamping platform 11 and an ultrasonic welding groove 12, and is further provided with one or more glue filling holes 13 and glue overflowing holes 14, the housing 1 is provided inside with a fixing column 15 for fixing a conductor 3, a foolproof rib 16 for preventing the conductor 3 from being reversely installed, and a blocking rib 17 for preventing the conductor 3 from being short-circuited, one of the blocking ribs 17 is provided with a groove 18, the upper cover 2 is fastened with the clamping platform 11 on the housing 1 through a fastener 22, and a plastic rib 24 on the upper cover 2 is inserted into the groove 18 of the housing 1 to prevent reverse installation, the upper cover 2 is provided with an ultrasonic welding rib 21 and a fastener 22, the top of the upper cover 2 is provided with a clamping groove 23 for fixing a cable 4, the upper cover 2 is provided inside with a plastic rib 24 for preventing reverse installation, and the ultrasonic welding rib 21 on the upper cover 2 is firmly fixed with the ultrasonic welding groove 12 on the housing 1 by using an ultrasonic welding device The cable 4 extending into the housing 1 is fixed while being welded together, the conductive bodies 3 are respectively fixed at two ends inside the housing 1, the conductive bodies 3 are provided with fixing holes 31 and fool-proof grooves 32, bosses 33 of the cable 4 and the diode 6 are welded, the fixing holes 31 on the conductive bodies 3 are assembled on the fixing columns 15 in the housing 1 to be fixed, when the conductive bodies 3 are assembled, the fool-proof grooves 32 are aligned and matched with the fool-proof ribs 16 of the housing 1, two ends of each conductive body 3 are respectively connected with the cable 4, the cable 4 comprises an insulating layer 41 and a copper conductor 42, after the insulating layer 41 is stripped from the middle, the copper conductor 42 is bent into a U-shaped structure 43 and is welded on the bosses 33 at two ends of the conductive bodies 3.

The end part of each cable 4 is provided with a connector 5, the middle of each conductor 3 is fixed by welding through a diode 6, each diode 6 comprises a body 61 and a pin 62, the two pins 62 are bent to be right-angled shapes, the diode 6 is prevented from being damaged when being pulled, and the two pins 62 of the diode are welded on the boss 33.

The inside pouring sealant layer 7 that has played waterproof sealing effect of terminal box, be equipped with one or more pouring sealant hole 13 and excessive hole 14 on the casing 1 for pour into and observe the pouring sealant, after the equipment of above-mentioned structure is accomplished, with the glue solution through pouring sealant hole 13 on the casing 1 pour into the terminal box inside, unnecessary pouring sealant 7 overflows through excessive hole 14, treat that pouring sealant 7 solidifies the back, prevent inside steam entering terminal box, the terminal box assembly is accomplished.

The mounting method of the solar photovoltaic module junction box specifically comprises the following operation steps:

s1: butting male and female heads of a pair of connectors 5 of the photovoltaic module with male and female heads of the photovoltaic module, and connecting the other pair of male and female heads into a junction box or connecting the other pair of male and female heads in series with a next junction box;

s2: when the longest cable 4 on the junction box is connected into the junction box, the cable 4 is directly fixed in the clamping groove 23, so that the cable is neat and standard.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a solar PV modules terminal box, the terminal box includes casing (1) and upper cover (2), its characterized in that: casing (1) inside both ends are fixed with electric conductor (3) respectively, every the both ends of electric conductor (3) are connected with cable conductor (4) respectively, every the tip of cable conductor (4) all assembles connector (5), two through diode (6) welded fastening in the middle of electric conductor (3), there is inside casting glue layer (7) that plays sealed waterproof effect of terminal box.

2. The solar photovoltaic module junction box of claim 1, wherein: the ultrasonic welding device is characterized in that a clamping table (11) and an ultrasonic welding groove (12) are arranged on the shell (1), one or more glue pouring holes (13) and glue overflowing holes (14) are further arranged, meanwhile, a fixing column (15) used for fixing the electric conductor (3), a fool-proof rib (16) for preventing the electric conductor (3) from being reversely installed and a blocking rib (17) for preventing the electric conductor (3) from being short-circuited are arranged in the shell (1), and a groove (18) is formed in one of the blocking ribs (17).

3. The solar photovoltaic module junction box of claim 2, wherein: the upper cover (2) is provided with an ultrasonic welding rib (21) and a buckle (22), the top of the upper cover (2) is provided with a clamping groove (23) for fixing the cable (4), and a plastic rib (24) for preventing the upper cover (2) from being reversely arranged is arranged inside the upper cover (2).

4. The solar photovoltaic module junction box of claim 3, wherein: the conductor (3) is provided with a fixing hole (31), a fool-proof groove (32) and a boss (33) for welding the cable (4) and the diode (6).

5. The solar photovoltaic module junction box of claim 4, wherein: the cable (4) comprises an insulating layer (41) and a copper conductor (42), and after the insulating layer (41) is stripped from the middle, the copper conductor (42) is bent into a U-shaped structure (43).

6. The solar photovoltaic module junction box of claim 5, wherein: the diode (6) comprises a body (61) and pins (62), wherein the two pins (62) are bent to be in a right-angle shape, and the diode (6) is prevented from being damaged when being pulled.