CN209964015U

CN209964015U - Junction box for power generation of high-power high-efficiency photovoltaic module

Info

Publication number: CN209964015U
Application number: CN201920828517.8U
Authority: CN
Inventors: 段正刚
Original assignee: Suzhou QC Solar Co Ltd
Current assignee: Suzhou QC Solar Co Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-01-17
Anticipated expiration: 2029-06-04

Abstract

The utility model provides a junction box for generating electricity of a high-power high-efficiency photovoltaic module, which comprises an upper cover, a box body, an integral diode arranged in the box body, and a buckle matched with the end part of the box body for fixing a cable; the integral diode comprises a patch type diode body and wiring copper plate terminals arranged on two sides of the diode body, one end of each wiring copper plate terminal is integrally designed with a P pole or N pole pin copper plate of the diode body, the other end of each wiring copper plate terminal is a riveting part fixedly connected with a cable, and the middle of each wiring copper plate terminal is a flat plate part and comprises a slit for a bus bar to pass through and a welding part welded with the bus bar. The utility model discloses a terminal box for photovoltaic module, diode and copper terminal group are made up into a novel module, and the laminating of diode chip and copper is inseparable, and heat-sinking capability is strong, and terminal box electrical property promotes greatly; the integral connection is compact, and the volume is saved; the assembly process is simple to operate, high in assembly efficiency and high in reliability; the high-current output requirement of double-glass, laminated tile and double-sided photovoltaic modules is met.

Description

Junction box for power generation of high-power high-efficiency photovoltaic module

Technical Field

The utility model relates to a solar photovoltaic power generation technical field, in particular to be fit for terminal box for the high-power high-efficient photovoltaic module electricity generation such as shingled assembly, dual glass assembly, double-sided subassembly.

Background

With the increasing importance of the world countries on the climate change problem, the new energy is more and more important, and as one of the important categories of the new energy, the photovoltaic power generation assembly technology is continuously developed. The existing photovoltaic module is developed towards a high-efficiency high-power module, such as a laminated module, a double-glass module, a double-sided module and the like, so that new requirements are brought to a junction box of key accessories of the photovoltaic module, for example, the overcurrent capacity of the junction box is stronger, and the photovoltaic module is suitable for large-current output; the size of the assembly needs to be reduced as much as possible, and the shielding influence on the surface of the assembly is reduced; because the passing current is large, the heating of the junction box is also large, and therefore the volume of the junction box is reduced as much as possible, and the junction box is ensured to have strong heat dissipation capacity; in addition, the production process of the junction box is simplified and efficient as much as possible, the reliability of the product is guaranteed, and the cost is saved.

SUMMERY OF THE UTILITY MODEL

According to the requirement among the current high-power high-efficient photovoltaic module practical application, the utility model aims at providing a novel terminal box for photovoltaic module is fit for the occasion of heavy current output.

In order to achieve the purpose of the utility model, the junction box for generating electricity of the high-power high-efficiency photovoltaic module comprises an upper cover, a box body, an integral diode arranged in the box body, a buckle matched with the end part of the box body and used for fixing a cable, wherein one end of the cable is connected with a connecting terminal of the integral diode, and the other end of the cable is connected with a connector; the integral diode is arranged in the box body and comprises a patch type diode body, a first wiring copper plate terminal and a second wiring copper plate terminal, wherein the first wiring copper plate terminal and the second wiring copper plate terminal are arranged on two sides of the diode body; the bottom of the box body is provided with an opening hole corresponding to the position of the slit.

Preferably, the bottom of the buckle is provided with a glue pouring groove.

Preferably, the upper cover is an embedded cover body.

Preferably, the buckle and the end part of the box body are fixed by ultrasonic welding.

Preferably, the riveting part is of a U-shaped structure, and two side walls of the U-shaped structure are provided with notches.

The utility model has the advantages that the junction box for the photovoltaic module, the diode and the copper plate terminal are combined into a novel module, the diode chip is tightly attached to the copper plate, the heat dissipation capability is strong, and the electrical performance of the junction box is greatly improved; the integral connection is compact, and the volume is saved; the assembly process is simple to operate, high in assembly efficiency and high in reliability; the high-current output requirement of double-glass, laminated tile and double-sided photovoltaic modules is met.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings. Wherein:

fig. 1 is an exploded schematic view (including cables and connectors) of a junction box for power generation of a high-power high-efficiency photovoltaic module according to an embodiment of the present invention (one plate and one box);

FIG. 2 is a front view of the junction box of FIG. 1;

FIG. 3 is a side view of the junction box of FIG. 1;

FIG. 4 is a rear view of the junction box of FIG. 1;

FIG. 5 is a schematic view of the integral diode of the junction box of FIG. 1;

FIG. 6 is a schematic front view of the monolithic diode of FIG. 5;

FIG. 7 is a side view of the monolithic diode of FIG. 5;

fig. 8 is an exploded schematic view (including cables and connectors) of a junction box for generating high-power and high-efficiency photovoltaic modules according to another embodiment of the present invention (one-plate three-box).

Detailed Description

The structure, features and advantages of the junction box of the present invention will be described in detail below with reference to specific embodiments.

An object of the utility model is to provide a small, the strong, the high and simple photovoltaic module terminal box of assembly of too big electric current ability of the ability of.

Specifically, refer to fig. 1 and show the utility model discloses a high-power high-efficient photovoltaic module is explosion structure of terminal box for electricity generation of an embodiment (contain cable and connector), the terminal box include upper cover 10, box body 30, set up integral diode 20 in the box body, cooperate with the tip 32 of box body with the buckle 40 that cable conductor 40 is fixed, the one end of cable is connected with integral diode 20's binding post, the other end is connected with the connector, for example, as shown in the figure public insert 60, female insert 70. In a preferred embodiment, the upper cover 10 is a built-in cover body, so that the height of the box body can be reduced, and the assembly of the upper cover is easier to operate at the position where the assembly has a frame.

Referring to the structural schematic diagrams of the junction box shown in fig. 2 to 4, the integral diode 20 is disposed in the box body 30, and includes a patch diode body 201, and a first wiring copper plate terminal 202 and a second wiring copper plate terminal 203 disposed at two sides of the diode body 201, wherein one end of the first wiring copper plate terminal 202 is integrally designed with a P-pole (or N-pole) pin copper plate of the diode body 201, one end of the second wiring copper plate terminal 203 is integrally designed with an N-pole (or P-pole) pin copper plate of the diode body 201, one end of the copper plate terminal is led out from the diode body, and is directly plastic-encapsulated inside the diode heat dissipation silicone grease, the other end is a riveting part 25 connected and fixed with a cable, and the middle part is a flat plate part including a slit 23 for a bus bar to pass through and a welding part 24 welded with the bus bar; referring to fig. 4, the bottom of the box body 30 is provided with an opening 32 corresponding to the position of the slit 23, the bottom of the buckle 40 is provided with a glue pouring groove 42 to ensure the reliability of the bonding between the junction box and the component, and the buckle 40 and the end 32 of the box body 30 are fixed by ultrasonic welding, so that the cable is not pulled out or rotated, and the complex connection mode of the traditional nut locking cable is replaced.

Referring to fig. 5 to 7, the integral diode 20 of the junction box of the present invention has a schematic structural diagram, wherein the

terminals

202 and 203 of the connecting copper sheet are respectively arranged on two sides of the diode body 201, one end of the terminal is the pin end of the P pole and the N pole of the diode, the terminal is led out from the diode body, the terminal is directly plastic sealed inside the heat dissipation silicone grease of the diode, and the other end of the terminal is the riveting part 25 fixed with the cable. In a preferred embodiment, the riveting portion 25 is a U-shaped structure, and the two side walls of the U-shaped structure are provided with the notches 251, so that the riveting condition of the cable can be conveniently observed, and when reinforcement is needed, additional soldering is facilitated, so that the riveting portion is divided into two parts, the stress is uniform, and the firmness is increased.

The photovoltaic module junction box of the utility model can be flexibly arranged according to the user requirements during actual use, and one junction box (one plate and one box) can be used for one module; in the application, only the conventional design change needs to be carried out on the box body, the internal structure of the junction box does not need to be changed, and the adaptability is good.

The utility model discloses a junction box for photovoltaic module adopts the embedded upper cover, reduces the box body height, easy assembly; the diode and the copper plate terminal are combined into a novel module, the diode chip is tightly attached to the copper plate, the heat dissipation capacity is strong, and the electrical performance of the junction box is greatly improved; the copper plate terminal is directly and plastically packaged in the diode heat dissipation silicone grease, so that the whole connection is compact, the volume is saved, and the whole junction box body becomes small and attractive; in addition, the module diode saves the traditional diode welding mode, the module can be directly arranged in the plastic base, the process operation is simple, and the assembly efficiency is high; the cable fixing buckle presses the cable by ultrasonic welding, so that the cable is not pulled out or rotated, and a complicated connection mode of locking the cable by a traditional nut is replaced; the U-shaped riveting end fixedly connected with the head of the cable is designed to be of a middle notch shape, so that the riveting condition of the cable can be conveniently observed, and meanwhile, additional tin soldering is convenient, so that the riveting place is divided into two parts, the stress is uniform, and the firmness is increased. The utility model discloses a terminal box structural design is reasonable, and the radiating effect is good, and the appearance is pleasing to the eye, and electrical properties is excellent, adapts to two glasss, folds the requirement of tile, two-sided photovoltaic module's heavy current output.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications or changes without departing from the spirit of the present invention.

Claims

1. The junction box for generating power by the high-power high-efficiency photovoltaic module is characterized by comprising an upper cover, a box body, an integral diode arranged in the box body, and a buckle matched with the end part of the box body to fix a cable, wherein one end of the cable is connected with a wiring terminal of the integral diode, and the other end of the cable is connected with a connector; the integral diode is arranged in the box body and comprises a patch type diode body, a first wiring copper plate terminal and a second wiring copper plate terminal, wherein the first wiring copper plate terminal and the second wiring copper plate terminal are arranged on two sides of the diode body; the bottom of the box body is provided with an opening hole corresponding to the position of the slit.

2. The junction box for power generation of high-power high-efficiency photovoltaic modules as claimed in claim 1, wherein the bottom of the buckle is provided with a glue pouring groove.

3. The junction box for power generation of high-power high-efficiency photovoltaic modules as claimed in claim 1, wherein said top cover is an embedded cover.

4. The junction box for power generation of high-power high-efficiency photovoltaic modules as claimed in claim 1, wherein the buckle is fixed to the end of the box body by ultrasonic welding.

5. The junction box for power generation of high-power high-efficiency photovoltaic modules as claimed in claim 1, wherein said riveting portion is of a U-shaped structure, and notches are provided on two side walls of said U-shaped structure.