阅读说明：本技术 一种新型模块化光伏组件旁路元件及接线盒 (Novel modularized photovoltaic assembly bypass element and junction box ) 是由 段正刚 于 2020-06-09 设计创作，主要内容包括：本发明提出一种新型模块化光伏组件旁路元件,其包括第一导电端子、第二导电端子和两者之间的旁路保护器件封装模块,旁路保护器件封装模块包括绝缘塑封体和封于其内的旁路保护器件,两个导电端子伸入绝缘塑封体内部的一端为结构相同的L形结构,且两个导电端子上的凸出部的形状相同,面积比为0.7-1.4,两者相互拼合并间隔一设定间距；旁路保护器件设于其中一个导电端子的凸出部上,并通过跳线与另一个导电端子的凸出部电连接。本发明还提出包括所述旁路元件的接线盒。本发明的旁路元件,可以采用同一套冲压模具生产制造,仅需通过调整旁路保护器件的安装位置,即可实现旁路元件的导电端子的极性的转变；可实现大电流传输,提高旁路元件的导电能力。(The invention provides a novel modularized photovoltaic assembly bypass element, which comprises a first conductive terminal, a second conductive terminal and a bypass protection device packaging module between the first conductive terminal and the second conductive terminal, wherein the bypass protection device packaging module comprises an insulating plastic package body and a bypass protection device packaged in the insulating plastic package body, one end of each of the two conductive terminals, which extends into the insulating plastic package body, is of an L-shaped structure with the same structure, the shapes of convex parts on the two conductive terminals are the same, the area ratio is 0.7-1.4, and the two conductive terminals are spliced with each other and separated by a set distance; the bypass protection device is arranged on the convex part of one conductive terminal and is electrically connected with the convex part of the other conductive terminal through a jumper wire. The invention also proposes a junction box comprising said bypass element. The bypass element can be produced by adopting the same set of stamping die, and the polarity of the conductive terminal of the bypass element can be changed only by adjusting the mounting position of the bypass protection device; the high-current transmission can be realized, and the conductivity of the bypass element is improved.)

1. A novel modularized photovoltaic assembly bypass element is characterized in that the bypass element comprises a first conductive terminal, a bypass protection device packaging module and a second conductive terminal, the bypass protection device packaging module is arranged between the first conductive terminal and the second conductive terminal, the bypass protection device packaging module comprises an insulating plastic package body and a bypass protection device arranged in the insulating plastic package body, one end, extending into the insulating plastic package body, of the first conductive terminal and one end, extending into the insulating plastic package body, of the second conductive terminal are of L-shaped structures with the same structures, a first protruding portion on the first conductive terminal and a second protruding portion on the second conductive terminal are of the same shapes, the area ratio is 0.7-1.4, and the first conductive terminal and the second conductive terminal are spliced with each other and are separated by a set interval; the bypass protection device is arranged on the convex part of one conductive terminal and is electrically connected with the convex part of the other conductive terminal through a jumper wire.

2. The novel modular photovoltaic module bypass element according to claim 1, wherein the area ratio of the first and second protrusions is 0.85-1.2.

3. The novel modular photovoltaic module bypass element according to claim 1, wherein the first and second protrusions have the same area.

4. The novel modular photovoltaic module bypass element as claimed in claim 1, 2 or 3, wherein the first and second conductive terminals are provided with slots for the bus bar to pass through, respectively, near the insulating plastic-sealed body; the plane part of the first conductive terminal and the plane part of the second conductive terminal are provided with a convergence belt welding area.

5. The novel modular photovoltaic module bypass element as claimed in claim 4, wherein the first conductive terminal and the second conductive terminal are each provided with a plurality of positioning holes.

6. The novel modular photovoltaic module bypass element as claimed in claim 4, wherein the end of the first conductive terminal and/or the second conductive terminal is provided with a cable riveting portion, and the cable riveting portion is formed as an integral structure with the first conductive terminal and/or the second conductive terminal by extending from the end of the first conductive terminal and/or the second conductive terminal through stamping; (the module with the riveting part at one end and the riveting part at two ends is protected in the strip).

7. The novel modular photovoltaic module bypass element as claimed in claim 6, wherein the cable rivet is of a U-shaped structure with slots on both sides.

8. The novel modular photovoltaic module bypass element as claimed in claim 7, wherein a connection portion having a folded height is provided between the cable riveting portion and the flat portion of the conductive terminal, and a boss protruding outward is provided at an end of the cable riveting portion.

9. A photovoltaic module junction box, characterized in that the junction box comprises a box body and a box cover, and the novel modularized photovoltaic module bypass element as claimed in any one of claims 1-8 is assembled in the box body.

10. The pv module junction box of claim 9 wherein said pv module junction box is a single piece junction box or a split piece junction box.

Technical Field

The invention relates to the technical field of solar photovoltaic, in particular to a novel modularized photovoltaic module bypass element and a photovoltaic module junction box using the same.

Background

The solar photovoltaic module is a device for converting solar energy into electric energy, and in the production process of the photovoltaic module, the junction box plays an important role in effectively outputting the photovoltaic electric energy and mainly plays a role in outputting current generated by the photovoltaic module and protecting the solar photovoltaic module. The current generated by each solar panel is relatively small, and a photovoltaic junction box is needed to electrically connect a plurality of solar panels together, so that the currents generated by the plurality of solar panels are converged together and output to form a photovoltaic system reaching a certain power generation capacity. In actual use, the photovoltaic junction box is generally directly mounted on the corresponding solar panel and electrically connected to the bus bars of the solar panel. In a photovoltaic junction box, a conductive element consisting of a conductive sheet and a bypass protection device (such as a diode) is a key component, which serves as bypass protection. In the current conductive element of the photovoltaic junction box, the conductive sheet structures on the two sides of the bypass protection device are different, and manufacturing molds with various structures need to be prepared during production and manufacturing, so that the manufacturing cost is increased, and the management of parts is not facilitated. Particularly, in the split photovoltaic junction box, the structures of the conductive elements in the boxes are different, and stamping dies with different structures are required, so that additional equipment investment is increased, the manufacturing cost is high, and the management is inconvenient; moreover, due to the different structures of the conductive elements, the structure and the size of the junction box body for assembling the conductive elements are different, so that different forming molds need to be prepared, and the production cost of the junction box is higher.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a novel modularized photovoltaic module bypass element which optimizes the structural design of a conductive element, avoids using manufacturing dies with various structures during manufacturing, improves the production efficiency, reduces the manufacturing cost and is convenient to manage.

In order to achieve the purpose, the invention adopts the following technical scheme:

a novel modularized photovoltaic module bypass element comprises a first conductive terminal, a bypass protection device packaging module and a second conductive terminal, wherein the bypass protection device packaging module is arranged between the first conductive terminal and the second conductive terminal, the bypass protection device packaging module comprises an insulating plastic package body and a bypass protection device arranged in the insulating plastic package body, one end, extending into the insulating plastic package body, of the first conductive terminal and one end, extending into the insulating plastic package body, of the second conductive terminal are of an L-shaped structure with the same structure, a first protruding portion on the first conductive terminal and a second protruding portion on the second conductive terminal are the same in shape, the area ratio is 0.7-1.4, and the first conductive terminal and the second conductive terminal are spliced with each other and are separated by a set interval; the bypass protection device is arranged on the convex part of one conductive terminal and is electrically connected with the convex part of the other conductive terminal through a jumper wire.

Preferably, the area ratio of the first protrusion to the second protrusion is 0.85-1.2.

Still preferably, the first protrusion and the second protrusion have the same area.

Preferably, the first conductive terminal and the second conductive terminal of the legal person are provided with slot holes for the bus belt to pass through at positions close to the insulating plastic-sealed body; the plane part of the first conductive terminal and the plane part of the second conductive terminal are provided with a convergence belt welding area.

Preferably, the first conductive terminal and the second conductive terminal are provided with a plurality of positioning holes.

Preferably, the end of the first conductive terminal and/or the second conductive terminal is provided with a cable riveting portion, and the cable riveting portion extends from the end of the first conductive terminal and/or the second conductive terminal and is formed into an integral structure with the first conductive terminal and/or the second conductive terminal through stamping.

Preferably, the cable riveting part is of a U-shaped structure, and two sides of the cable riveting part are provided with grooves.

Preferably, a connecting part with a folded height is arranged between the cable riveting part and the plane part of the conductive terminal, and a boss extending outwards is arranged at the end part of the cable riveting part.

According to another object of the invention, a photovoltaic module junction box is further provided, which comprises a box body and a box cover, wherein the novel modular photovoltaic module bypass element is assembled in the box body.

Preferably, the photovoltaic module junction box is a single junction box or a split junction box.

Compared with the prior art, the invention has the beneficial effects that:

1. in the novel modularized photovoltaic assembly bypass element, the first conductive terminal and the second conductive terminal extend into the protrusion parts in the bypass protection device packaging module, the structures are the same, the areas are the same, the same set of stamping die can be adopted for production and manufacturing, extra equipment investment is saved, the manufacturing cost is saved, the conductive terminals with various structures are prevented from being produced, and the part management is facilitated;

2. when the modularized photovoltaic assembly bypass element is applied to the split type photovoltaic junction box, the polarity of the conductive terminals of the modularized photovoltaic assembly bypass element in different boxes can be changed only by adjusting the installation position of the bypass protection device;

3. the conducting terminal stretches into the protruding part in the bypass protection device packaging module, so that the inner space of the insulation plastic package body is effectively utilized, an oversized bypass protection device can be placed, large-current transmission is realized, and the conducting capacity of a novel modularized photovoltaic assembly bypass element is improved.

Drawings

Fig. 1 is a schematic plan view of a novel modular photovoltaic module bypass element (applied to a negative terminal box of a split terminal box) in embodiment 1 of the present invention;

fig. 2 is a schematic plan view of a novel modular photovoltaic module bypass component according to embodiment 1 of the present invention (applied to an intermediate junction box of a split junction box);

fig. 3 is a schematic plan view of a novel modular photovoltaic module bypass component according to embodiment 1 of the present invention (applied to a positive terminal box of a split terminal box);

fig. 4 is a schematic plan view of a novel modular photovoltaic module bypass component according to embodiment 2 of the present invention (applied to a negative terminal box of a split terminal box);

fig. 5 is a schematic perspective view of the novel modular photovoltaic module bypass element of fig. 4;

fig. 6 is a schematic plan view of a novel modular photovoltaic module bypass component according to embodiment 2 of the present invention (an intermediate junction box and a positive junction box applied to a split junction box).

The main elements in the figures are numbered:

10-a first conductive terminal, 11-a slotted hole, 12-a convergence strip welding area, 13-a positioning hole, 20-a bypass protection device packaging module, 21-an insulating plastic package body, 22-a bypass protection device, 23-a jumper wire, 30-a second conductive terminal, 40-a cable riveting part, 41-a slotted hole, 42-a boss and 50-a connecting part.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Please refer to fig. 1 to fig. 3, which are schematic structural diagrams of a novel modular photovoltaic module bypass element applied to a split junction box of a photovoltaic module according to embodiment 1 of the present invention; the novel modularized photovoltaic module bypass element comprises a first conductive terminal 10, a bypass protection device packaging module 20 and a second conductive terminal 30, wherein the bypass protection device packaging module 20 is arranged between the first conductive terminal 10 and the second conductive terminal 30, the bypass protection device packaging module 20 comprises an insulating plastic-sealed body 21 and a bypass protection device 22 arranged inside the insulating plastic-sealed body 21, one ends of the first conductive terminal 10 and the second conductive terminal 30, which extend into the insulating plastic-sealed body 21, are of L-shaped structures with the same structure, a first protruding part 15 (see the dotted line frame parts in fig. 1 and 2) on the first conductive terminal 10 is the same as a second protruding part 35 (see the dotted line frame parts in fig. 1 and 2) on the second conductive terminal 30 in shape, the area ratio is 0.7-1.4, and the first conductive terminal 10 and the second conductive terminal are spliced with a set interval; the bypass protection device 22 is disposed on the protruding portion of one of the conductive terminals and is electrically connected to the protruding portion of the other conductive terminal through the jumper 23. The bypass protection device in this embodiment may be a diode chip or an integrated circuit module having a bypass protection function.

The novel modularized photovoltaic module bypass element adopts the integrated packaging technology of the conductive terminal and the bypass protection device, avoids secondary switching, and enhances the conductivity of the bypass protection device; the novel modularized photovoltaic component bypass element is reduced in size, and integration, unification and standardization of a photovoltaic component junction box are conveniently realized; the first conductive terminal and the second conductive terminal of the modularized photovoltaic assembly bypass element extend into the plastic package body in the same structural shape, when the modularized photovoltaic assembly bypass element for the negative terminal box, the middle terminal box and the positive terminal box of the split type terminal box is formed, only one pair of forming dies are used, when in production, the polarity conversion can be realized only by exchanging the positions of bypass protection devices such as diode chips on the same pair of conductive terminal copper plate frames, for example, as shown in fig. 1, when the modularized photovoltaic assembly bypass element is used for the negative terminal box, the bypass protection devices such as the diode chips are arranged on the convex part of the conductive terminal at the right side and are electrically connected with the convex part of the conductive terminal at the left side through a jumper, when the modularized photovoltaic assembly bypass element is used for the middle terminal box and the positive terminal box, as shown in fig. 2 and 3, only the positions of the bypass protection devices such as the diode chips are exchanged, the conductive terminal is placed on the convex part of the conductive terminal on the left side and is electrically connected with the convex part of the conductive terminal on the right side through the jumper wire; in addition, in a preferred embodiment, the area ratio of the convex part for placing the bypass protection device such as the diode chip, which is spliced by the two conductive terminals, is 0.85-1.2; optimally, the areas of the protruding parts, which are spliced with each other and used for placing the bypass protection device such as the diode chip, of the two conductive terminals are the same, so that the placing positions of the bypass protection device such as the diode chip can be flexibly arranged; the effective utilization area of the copper sheet in the plastic package body can be guaranteed to be large enough, a super-large bypass protection device such as a super-large diode single chip can be placed, heavy current transmission can be achieved, and the conductive capacity of a novel modularized photovoltaic module bypass element is improved.

Further, referring to fig. 1, slots 11 for the bus bar to pass through are disposed on the first conductive terminal 10 and the second conductive terminal 30 near the insulating plastic package body 21. In the embodiment, the slot 11 is a rectangular through hole, so that a junction box can be conveniently installed and a junction box can pass through the slot; however, the present invention is not limited thereto, and in other embodiments, the slot 11 may also adopt other shapes of reasonable structural designs.

Still preferably, the flat portions of the first conductive terminal 10 and the second conductive terminal 30 are provided with the bus bar land 12. The bus bar welding area 12 may be a structure formed by protruding or recessing the surface of the first conductive terminal 10 or the surface of the second conductive terminal 30, so as to facilitate welding the bus bar when the junction box is mounted, and facilitate quick positioning. In the embodiment of the present invention, the bus bar welding area 12 is a rectangular structure formed by the surface depressions of the first conductive terminal 10 and the second conductive terminal 30, however, the present invention is not limited thereto, and in other embodiments, the bus bar welding area may adopt other reasonable structural designs.

Preferably, the first conductive terminal 10 and the second conductive terminal 30 are respectively provided with a plurality of positioning holes 13 for quick positioning, mounting and fixing when the novel modularized photovoltaic module bypass element 100 is installed in the junction box, so that the mounting efficiency is improved. The positioning hole 13 can rapidly and accurately position the modularized bypass element, and can achieve the fool-proof function through the shape and/or the design of the setting position of the positioning hole, so that the error of the installation direction during the assembly is avoided.

Still preferably, in a preferred embodiment, the end portions of the first conductive terminal 10 and the second conductive terminal 30 are provided with cable riveting portions 40 for connecting the conductive element with the cable, and the cable riveting portions 40 are formed as an integral structure with the first conductive terminal 10 and the second conductive terminal 30 by extending from the end portions of the first conductive terminal 10 and the second conductive terminal 30 through stamping.

In another preferred embodiment, because the split junction box generally comprises a left junction box, a middle junction box and a right junction box, only one conductive terminal in the left junction box and one conductive terminal in the right junction box need to be riveted with a cable, and the other conductive terminals do not need to be connected with the cable, on the basis of considering element standardization and reducing the volume of the junction box, the two conductive terminals of the modularized photovoltaic module bypass element, namely the first conductive terminal 10 and the second conductive terminal 30, are provided with a cable riveting part 40 at the end part of one of the two conductive terminals; see fig. 4 and 5.

Preferably, the cable riveting portion 40 is of a U-shaped structure, and the two sides thereof are provided with the slots 41, so that the sectional riveting is conveniently realized, and the strength and reliability of the riveting connection are improved; further, referring to fig. 4 and 5, a connection portion 50 having a folded height is disposed between the cable riveting portion 40 and the planar portion of the conductive terminal, and the connection portion 50 can improve the connection strength and the over-current capability of the cable riveting portion 40 and the planar portion of the conductive terminal, and can also be used as a baffle when a cable is inserted, so that the cable is prevented from being excessively inserted, the cable end portion is conveniently riveted and fixed, and the cable riveting and fixing efficiency is improved; preferably, the end of the cable riveting portion 40 is provided with a boss 42 extending outward, so that the cable can be prevented from being damaged by pressing the skin of the cable when being riveted, and the electric leakage situation can be avoided.

Referring to fig. 4 and 6, for the novel modularized photovoltaic module bypass element in which a cable riveting portion is designed at one end of embodiment 2, similarly, as long as the protruding portions of two conductive terminals extending into the plastic package body have the same structure, flexible placement of the bypass protection device can be achieved, and the polarity of the conductive terminals can be conveniently changed as needed to meet the use requirements of the junction boxes at different positions in the split type junction box, for example, as shown in fig. 4, the modularized bypass element 100 for the negative junction box places the bypass protection device, such as a diode chip, on the protruding portions of the conductive terminals at the right side and is electrically connected with the protruding portions of the conductive terminals at the left side through jumper wires; as shown in fig. 6, the modular bypass element 200 for the intermediate junction box and the positive junction box only needs to replace the bypass protection device, such as a diode chip, to be placed on the protruding portion of the left conductive terminal and electrically connected with the protruding portion of the right conductive terminal through the jumper; therefore, the processing of the modularized bypass elements of the three junction boxes can be realized by only one set of forming die; and can meet the use requirement of large current transmission.

According to another object of the invention, the invention further provides a photovoltaic module junction box, which comprises a box body and a box cover, wherein the novel modular photovoltaic module bypass element is assembled in the box body; the photovoltaic module junction box is a single junction box or a split junction box.

In summary, according to the novel modularized photovoltaic module bypass element provided by the invention, the shape and area of the protruding part of the first conductive terminal and the second conductive terminal extending into the bypass protection device packaging module are the same, when the novel modularized photovoltaic module bypass element is applied to a split type photovoltaic junction box, the purpose of changing the polarity of the conductive terminals of the bypass element in different boxes can be achieved only by adjusting the installation position of the bypass protection device such as a diode chip, the bypass element suitable for all junction boxes can be manufactured by adopting the same set of stamping die, the additional equipment investment is saved, the manufacturing cost is saved, the conductive terminals with various structures are avoided being produced, the part management and the production manufacturing are facilitated, and the production efficiency is improved; the super-large bypass protection device such as a super-large diode single chip can be adopted to realize large-current transmission, and the conductivity of the novel modularized photovoltaic module bypass element is improved.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.