CN212183478U

CN212183478U - Small-size 180 degrees module heavy current terminal box of being qualified for next round of competitions

Info

Publication number: CN212183478U
Application number: CN202021017209.6U
Authority: CN
Inventors: 杨龙; 周德全; 祝菊芬
Original assignee: Jiangxi Jinko Pv Material Co ltd
Current assignee: Jiangxi Jinko Pv Material Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-12-18
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a large current junction box of a small 180-degree outgoing line module, which belongs to the technical field of photovoltaic power generation, and comprises a photovoltaic power generation component, wherein the left side and the right side of the upper part of the photovoltaic power generation component are respectively provided with a junction box, two junction boxes are symmetrically arranged on the photovoltaic power generation component, the middle part of the upper part of the photovoltaic power generation component is provided with an independent junction box, two junction boxes respectively comprise a plastic shell, the independent junction box comprises an independent plastic shell, the bodies of the independent plastic shell and the two plastic shells are respectively provided with a mounting groove, three chips on the same diode are connected by adopting a parallel circuit, in the structure of the parallel circuit, the three chips shunt the passing current, thereby improving the maximum current passing through the diode, simultaneously the current shunt can reduce the current passing through a single chip, and the current reduction can reduce the generated, therefore, the heat productivity of the diode is reduced, and the reliability of the product is improved.

Description

Small-size 180 degrees module heavy current terminal box of being qualified for next round of competitions

Technical Field

The utility model relates to a photovoltaic power generation technical field specifically is a small-size 180 degrees module heavy current terminal boxes of being qualified for next round of competitions.

Background

Solar photovoltaic power generation refers to a power generation mode of directly converting light energy into electric energy without a thermal process. The photovoltaic cell is practically applied at present, a photovoltaic junction box is needed by the photovoltaic cell, the photovoltaic junction box is a connecting device between a solar cell array formed by solar cell components and a solar charging control device, and the connecting device is mainly used for connecting and protecting the solar cell components, connecting electric power generated by the solar cell with an external circuit and conducting current generated by the photovoltaic components.

The maximum rated current of the existing photovoltaic junction box is only 20A, and the maximum rated current cannot be upgraded to higher current, the distance between the diode and the plastic body in the existing photovoltaic junction box is short, and the plastic body can be deformed and damaged along with the temperature rise of the diode during long-time work.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a small-size 180 degrees module heavy current terminal boxes of being qualified for the next round of competitions to solve the problem that the current photovoltaic terminal box maximum rated current who proposes only has 20A in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a small-sized 180-degree outgoing line module high-current junction box comprises a photovoltaic power generation assembly, junction boxes are mounted on the left side and the right side of the upper portion of the photovoltaic power generation assembly, two junction boxes are symmetrically mounted on the photovoltaic power generation assembly, an independent junction box is mounted in the middle of the upper portion of the photovoltaic power generation assembly, each junction box comprises a plastic shell, each independent junction box comprises an independent plastic shell, mounting grooves are formed in bodies of the independent plastic shells and the two plastic shells, plastic fixing columns are arranged at four corners of the bottom surface of each mounting groove, diodes are mounted inside the three mounting grooves, packaging plates are sleeved on the outer sides of the three diodes, each diode comprises a terminal and three chips, the three chips are mounted above the terminals side by side, the three chips are connected through parallel circuits, and mounting holes are formed in four corners of the body of each terminal, the mounting structure comprises a mounting groove, four plastic fixing columns, clamping blocks, terminals and a box cover, wherein the four plastic fixing columns in the same mounting groove are respectively inserted into four mounting holes of the same terminal, the clamping blocks are respectively mounted on the left side of the lower portion of a plastic shell and the right side of the lower portion of a right plastic shell, the terminals are clamped between the plastic shell and the two clamping blocks, one ends of the terminals are respectively contacted with the terminals in the two plastic shells, and the box cover is mounted above the independent plastic shells and the two plastic shells.

Preferably, the distance between two mounting holes on the front side of the same terminal is smaller than the distance between two mounting holes on the rear side.

Preferably, it is three the rear left and right sides of lid all is provided with the chamfer, the rear left and right sides of independent plastic shell and two plastic shells all is provided with corresponding chamfer.

Preferably, the bottom surfaces of the three mounting grooves are provided with outer convex blocks, and the positions of the three outer convex blocks correspond to the positions of the three diodes respectively.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the three chips on the same diode are connected by adopting a parallel circuit, and in the structure of the parallel circuit, the three chips shunt the passing current, so that the maximum current passing through the diode is improved, the current passing through a single chip is reduced by shunting, the heat generated by the chips is reduced by reducing the current, the heat productivity of the diode is reduced, and the reliability of the product is improved;

2) the bottom surface of mounting groove is provided with outer lug, and the outer lug can be filled up the position that generates heat of diode, avoids the position that generates heat of diode and independent plastic shell or plastic shell direct contact to the effectual damage that produces a large amount of heats in work diode can bring independent plastic shell or plastic shell of avoiding.

Drawings

Fig. 1 is a schematic view of the interior overlooking structure of the photovoltaic power generation assembly of the present invention;

FIG. 2 is an exploded view of the junction box of the present invention;

FIG. 3 is an exploded view of the independent junction box of the present invention;

fig. 4 is a schematic diagram of the diode structure of the present invention.

In the figure: the photovoltaic power generation module comprises a photovoltaic power generation assembly 1, a junction box 2, an independent junction box 3, a box cover 4, a binding post 5, a clamping block 6, a plastic shell 7, an installation groove 8, a diode 9, a terminal 91, a chip 92, a packaging plate 10, a plastic fixing column 11 and an independent plastic shell 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like 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, and 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 therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a small-size 180 degree module heavy current terminal box of being qualified for next round of competitions, including photovoltaic power generation subassembly 1, photovoltaic power generation subassembly 1 is two-sided double glass group's power generation subassembly, terminal box 2 is all installed to photovoltaic power generation subassembly 1's top left and right sides, two terminal box 2 symmetries are installed on photovoltaic power generation subassembly 1, the left side terminal box is the negative terminal box, the negative sign mark is carved with in the left side of negative terminal box, the right side terminal box is positive terminal box, the right side of positive terminal box is carved with the positive sign mark, photovoltaic power generation subassembly 1's top mid-mounting has independent terminal box 3, independent terminal box 3 and terminal box 2 width narrow down, thereby make things convenient for independent terminal box 3 and terminal box 2 to install at photovoltaic power generation subassembly 1 top edge, make terminal. The two junction boxes 2 respectively comprise plastic shells 7, the independent junction box 3 comprises independent plastic shells 12, mounting grooves 8 are respectively formed in the bodies of the independent plastic shells 12 and the two plastic shells 7, plastic fixing columns 11 are respectively arranged at four corners of the bottom surfaces of the three mounting grooves 8, diodes 9 are respectively mounted in the three mounting grooves 8, packaging plates 10 are respectively sleeved on the outer sides of the three diodes 9, signs are respectively marked at two ends of the three diodes 9, each diode 9 comprises a terminal 91 and three chips 92, the three chips 92 are mounted above the terminal 91 in parallel, the three chips 92 are connected through a parallel circuit, the parallel circuit can shunt the passing current, when the circuit passing through the diode 9 is 30A, the current passing through a single chip 92 is 10A, so that the rated current passing through the diode 9 is increased, according to the Joule law, the electric current through single chip 92 reduces, then the heat that single chip 92 produced also can reduce, make the terminal rectangle then with the multi-chip parallelly connected welding back encapsulation system module together, the part of reducible product and the soldering paste of reflow soldering are crossed to the diode, mounting hole 93 has all been seted up at four turnings of the body of terminal 91, four plastics fixed column 11 in same mounting groove 8 peg graft respectively in four mounting holes 93 of same terminal 91, grip block 6 is all installed on the below left side of left side plastic casing 7 and the below right side of right side plastic casing 7, it has terminal 5 all to centre gripping between two plastic casings 7 and two grip blocks 6, the one end of two terminal 5 contacts with terminal 91 in two plastic casings 7 respectively, lid 4 is all installed to the top of independent plastic casing 12 and two plastic casings 7.

The distance between the two mounting holes 93 on the front side of the same terminal 91 is smaller than the distance between the two mounting holes 93 on the rear side, and the distances are different so that only one mounting manner can mount the diode 9 to the mounting groove 8, thereby preventing an operator from reversely mounting the diode 9.

The left and right sides in rear of three lid 4 all are provided with the chamfer, and the left and right sides in rear of independent plastic shell 12 and two plastic shells 7 all is provided with corresponding chamfer, and only when the chamfer suits with corresponding chamfer, lid 4 just can be installed to avoid lid 4 to adorn anti-reversely.

The bottom surface of three mounting groove 8 all is provided with outer lug, and the position of three outer lug is corresponding with three diode 9's position respectively, and diode 9 and independent plastic casing 12 or plastic casing 7 direct contact can be avoided to outer lug to the effectual damage that produces a large amount of heats diode 9 and can bring independent plastic casing 12 or plastic casing 9 when work.

The working principle is as follows: three chips 92 are welded to the terminal 91 in parallel, then the packaging plate 10 is sleeved on the terminal 91, three diodes 9 combined with the packaging plate 10 are respectively installed in the installation grooves 8 of the independent plastic shell 12 and the two plastic shells 7, the box cover 4 is covered above the independent plastic shell 12, then the terminal 5 is connected with the terminal 91 in the plastic shell 7, the clamping block 6 is installed on the plastic shell 7, the terminal 5 is clamped between the clamping block 6 and the plastic shell 7, the box cover 4 is installed above the two plastic shells 7, the terminal box 2 and the independent terminal box 3 are assembled at the moment, and finally the terminal box 2 and the independent terminal box 3 are installed on the photovoltaic power generation assembly 1.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a small-size 180 degrees module heavy current terminal boxes of being qualified for next round of competitions, includes photovoltaic power generation subassembly (1), its characterized in that: junction boxes (2) are respectively installed on the left side and the right side of the upper portion of the photovoltaic power generation assembly (1), two junction boxes (2) are symmetrically installed on the photovoltaic power generation assembly (1), an independent junction box (3) is installed in the middle of the upper portion of the photovoltaic power generation assembly (1), two junction boxes (2) respectively comprise plastic shells (7), each independent junction box (3) comprises an independent plastic shell (12), mounting grooves (8) are respectively formed in bodies of the independent plastic shells (12) and the two plastic shells (7), plastic fixing columns (11) are respectively arranged at four corners of the bottom surfaces of the three mounting grooves (8), diodes (9) are respectively installed inside the three mounting grooves (8), packaging plates (10) are respectively sleeved on the outer sides of the three diodes (9), and each diode (9) comprises a terminal (91) and three chips (92), three of the chips (92) are mounted side by side above the terminals (91), the three chips (92) are connected by a parallel circuit, mounting holes (93) are formed in four corners of the body of the terminal (91), four plastic fixing columns (11) in the same mounting groove (8) are respectively inserted into the four mounting holes (93) of the same terminal (91), clamping blocks (6) are respectively arranged on the left side below the plastic shell (7) and the right side below the plastic shell (7) on the left side, binding posts (5) are respectively clamped between the two plastic shells (7) and the two clamping blocks (6), one end of each binding post (5) is respectively contacted with the terminal (91) in the two plastic shells (7), and the box covers (4) are arranged above the independent plastic shells (12) and the two plastic shells (7).

2. The small 180-degree outgoing line module high-current junction box of claim 1, wherein: the distance between the two mounting holes (93) on the front side of the same terminal (91) is smaller than the distance between the two mounting holes (93) on the rear side.

3. The small 180-degree outgoing line module high-current junction box of claim 1, wherein: the left side and the right side of the rear of the box cover (4) are provided with chamfers, and the left side and the right side of the rear of the independent plastic shell (12) and the two plastic shells (7) are provided with corresponding chamfers.

4. The small 180-degree outgoing line module high-current junction box of claim 1, wherein: the bottom surfaces of the three mounting grooves (8) are provided with outer convex blocks, and the positions of the three outer convex blocks correspond to the positions of the three diodes (9) respectively.