阅读说明：本技术 一种接线盒接线端子与汇流带的连接方法及连接结构 (Connecting method and connecting structure of junction box wiring terminal and bus bar ) 是由 苗蕾 刘红伟 杨燕 郑炯 麻超 王中河 单欣梅 闫伟 陈志军 尚琪 苑北海 于 2019-09-30 设计创作，主要内容包括：本发明提供一种接线盒接线端子与汇流带的连接方法,属于光伏组件制备技术领域,一种接线盒接线端子与汇流带的连接方法包括以下步骤：获取接线盒接线端子和汇流带；在接线盒接线端子和/或汇流带上分别涂抹导电胶水；使汇流带与接线盒接线端子接触并通过导电胶水粘贴固定。本发明一种接线盒接线端子与汇流带的连接方法及连接结构在接线盒的接线端子和汇流带的接触面分别涂抹导电胶水,使汇流带与接线盒的接线端子连接在一起,操作简单,降低工作难度和劳动强度,降低能源消耗,节约生产成本,提高生产效率和产品质量。(The invention provides a method for connecting a junction box wiring terminal and a bus bar, which belongs to the technical field of photovoltaic module preparation, and comprises the following steps: acquiring a wiring terminal and a bus bar of a junction box; respectively coating conductive glue on a wiring terminal and/or a bus bar of the junction box; the bus bar is contacted with the wiring terminal of the junction box and is stuck and fixed through conductive glue. According to the connecting method and the connecting structure of the junction box connecting terminal and the bus bar, the contact surfaces of the connecting terminal of the junction box and the bus bar are respectively coated with the conductive glue, so that the bus bar is connected with the connecting terminal of the junction box, the operation is simple, the working difficulty and the labor intensity are reduced, the energy consumption is reduced, the production cost is saved, and the production efficiency and the product quality are improved.)

1. A method for connecting a junction box wiring terminal and a bus bar is characterized by comprising the following steps:

acquiring a wiring terminal and a bus bar of a junction box;

coating conductive glue on the junction box wiring terminal and/or the bus bar;

and the bus bar is contacted with the junction box wiring terminal and is fixedly adhered through conductive glue.

2. The method of claim 1, wherein the terminal block has a first through hole at an end thereof; the bus bar is provided with a second through hole;

make converge the area with terminal box binding post contact and paste through conductive glue and connect fixedly include: and bending the bus bar to enable the bus bar to be in contact with and adhered to the junction box wiring terminal, align the first through hole and the second through hole, and simultaneously, connecting and fixing the junction box wiring terminal and the bus bar by using a connecting piece to penetrate through the first through hole and the second through hole.

3. The method of claim 2, wherein the junction box terminal further comprises a third through hole for passing the bus bar; the length of the third through hole is larger than the width of the bus bar, and the width of the third through hole is larger than the thickness of the bus bar.

4. A method of connecting a junction box terminal to a bus bar as claimed in claim 3, wherein said bringing said bus bar into contact with said junction box terminal and adhesively attaching and fixing by means of conductive glue further comprises: and firstly, the bus bar passes through the third through hole, and then the operation of bending the bus bar to enable the bus bar to be in contact with and adhered to the junction box wiring terminal is carried out.

5. The utility model provides a connection structure of terminal box binding post and area of converging, its characterized in that includes:

the junction box wiring terminal is provided with a first through hole and a third through hole; and

the bus bar is provided with a second through hole; the bus bar is bent to penetrate through the third through hole to be in contact with the junction box wiring terminal and fixed;

the contact surfaces of the junction box wiring terminals and the bus bars are provided with conductive glue; the connecting piece connects and fixes the junction box wiring terminal and the bus bar through the first through hole and the second through hole.

6. The junction box terminal block to bus bar connection of claim 5, wherein said connection member is a threaded screw assembly.

7. The junction box terminal block to bus bar connection of claim 5, wherein said connecting member is a clip.

8. The structure of claim 7, wherein the clip includes a clip body and a spring located inside the clip body.

9. The connecting structure of a junction box terminal block and a bus bar as set forth in claim 8, wherein said clip body is provided with a contact at one side thereof and a clip hole at the other side thereof for engagement of the contact.

10. The connecting structure of a junction box terminal and a bus bar as set forth in claim 9, wherein said clip body is provided at both sides thereof with clip holes, and said connecting member is used to pass through said clip holes, said second through hole and said first through hole in order from one side of said clip body and to pass through and fix from said clip holes at the other side of said clip body.

Technical Field

The invention belongs to the technical field of photovoltaic module preparation, and particularly relates to a connecting method and a connecting structure of a junction box wiring terminal and a bus bar.

Background

The bus bar is used for connecting the series-welded photovoltaic cells in series and parallel to form a loop, and is finally connected with the junction box; the terminal box wiring terminal is the final part for connecting an external cable and the photovoltaic module inside the terminal box.

The safety performance of the photovoltaic module is enhanced by the main functions of the junction box of the photovoltaic module, and the current output part (lead part) of the photovoltaic module is sealed, so that the photovoltaic module is more convenient and reliable to use. The most important link is the connection link of the terminal of the junction box and the bus bar. The whole electric current that gives the terminal through converging the area conduction of taking and conduct through the terminal box cable again for the external world, if the two can not the effective connection will cause the electric current can't be derived, photovoltaic module is scrapped, connects insecure will lead to this position resistance too high, causes photovoltaic module to strike sparks and burns out.

The connection mode of a connecting terminal of a junction box of an existing photovoltaic module and a bus bar is that soldering tin is adhered to the connecting terminal of the junction box in advance, and then the bus bar is pressed on a terminal by using heating equipment to melt the soldering tin and adhere the bus bar; tin supplement operation of adding tin is usually carried out to ensure the welding effect after the welding is finished; however, the bus bar can be bent by 90 degrees and then welded after being led out from the inside of the photovoltaic module due to the thickness of the photovoltaic module; the lead to the fact and converge the area and have the certain reverse acting force of perk itself when the welding, before the soldering tin did not solidify after heating equipment left the area of converging, because its reverse acting force leads to converging the area and produce the separation even with terminal box binding post's being connected insecure. Because guarantee the leakproofness, reduce other risks such as electric leakage, converge and take length can not the overlength, lead to converging to take and be connected with terminal box binding post and become the heavy and medium weight in the photovoltaic module production process.

Disclosure of Invention

The invention aims to provide a connecting method of a connecting terminal of a junction box and a bus bar, and aims to solve the technical problems that the connecting of the connecting terminal of the current junction box and the bus bar needs welding, time and labor are wasted, and the working efficiency is low.

In order to achieve the purpose, the invention adopts the technical scheme that: a method for connecting a junction box terminal with a bus bar comprises the following steps:

acquiring a wiring terminal and a bus bar of a junction box;

coating conductive glue on the junction box wiring terminal and/or the bus bar;

and the bus bar is contacted with the junction box wiring terminal and is fixedly adhered through conductive glue.

As another embodiment of the application, a first through hole is formed in the end of the junction box terminal; the bus bar is provided with a second through hole;

make converge the area with terminal box binding post contact and paste through conductive glue and connect fixedly include: and bending the bus bar to enable the bus bar to be in contact with and adhered to the junction box wiring terminal, align the first through hole and the second through hole, and simultaneously, connecting and fixing the junction box wiring terminal and the bus bar by using a connecting piece to penetrate through the first through hole and the second through hole.

As another embodiment of the application, a third through hole for the bus bar to pass through is further formed in the junction box terminal block; the length of the third through hole is larger than the width of the bus bar, and the width of the third through hole is larger than the thickness of the bus bar.

As another embodiment of the present application, the bringing the bus bar into contact with the junction box terminal block and fixedly attaching the junction box terminal block by conductive glue further includes: and firstly, the bus bar passes through the third through hole, and then the operation of bending the bus bar to enable the bus bar to be in contact with and adhered to the junction box wiring terminal is carried out.

Another object of the present invention is to provide a connecting structure of a junction box terminal and a bus bar, comprising:

the junction box wiring terminal is provided with a first through hole and a third through hole; and

the bus bar is provided with a second through hole; the bus bar is bent to penetrate through the third through hole to be in contact with the junction box wiring terminal and fixed;

the contact surfaces of the junction box wiring terminals and the bus bars are provided with conductive glue; the connecting piece connects and fixes the junction box wiring terminal and the bus bar through the first through hole and the second through hole.

As another embodiment of the present application, the connector is a threaded screw assembly.

As another embodiment of the present application, the connector is a clip.

As another embodiment of the present application, the clip includes a clip body and a spring located inside the clip body.

As another embodiment of the application, one side of the clamping body is provided with a contact, and the other side of the clamping body is provided with a clamping hole for clamping the contact.

As another embodiment of this application, the both sides of clamping body all are equipped with the card hole, use the connecting piece follow one side of clamping body passes in proper order the card hole, the second through-hole with first through-hole is followed the card hole of clamping body opposite side passes and fixes.

The connecting method and the connecting structure of the junction box wiring terminal and the bus bar have the advantages that: compared with the prior art, the connecting method and the connecting structure of the junction box connecting terminal and the bus bar respectively coat the conductive glue on the contact surfaces of the connecting terminal of the junction box and the bus bar, so that the bus bar is connected with the connecting terminal of the junction box, the operation is simple, the work difficulty and the labor intensity are reduced, the energy consumption is reduced, the production cost is saved, and the production efficiency and the product quality are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a terminal block of a connection structure of a terminal block and a bus bar according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a terminal block of a connection structure of a terminal block and a bus bar according to an embodiment of the present invention;

fig. 3 is a first schematic structural diagram of a bus bar of a connection structure of a junction box terminal and the bus bar according to an embodiment of the invention;

fig. 4 is a second schematic structural diagram of a bus bar of the connection structure of the junction box terminal and the bus bar according to the embodiment of the invention;

fig. 5 is a schematic structural view of a connection structure of a junction box junction terminal and a bus bar according to an embodiment of the present invention, in which a contact side of the junction terminal and the bus bar is coated with a conductive glue;

fig. 6 is a first structural schematic diagram of a connection structure of a junction box connection terminal and a bus bar according to an embodiment of the present invention after the connection of the connection terminal and the bus bar;

fig. 7 is a second schematic structural diagram of a connection structure between a junction box terminal and a bus bar according to an embodiment of the present invention;

FIG. 8 is a top view of FIG. 7;

fig. 9 is a third schematic structural diagram of a connection structure of a junction box terminal and a bus bar according to an embodiment of the present invention;

FIG. 10 is a top view of FIG. 9;

FIG. 11 is a schematic structural view of a clip according to an embodiment of the present invention;

FIG. 12 is a schematic view of an expanded clip structure according to an embodiment of the present invention;

FIG. 13 is a schematic structural view of a clamp clamping a terminal with a bus bar;

in the figure: 100. a junction box wiring terminal; 110. a first through hole; 120. a third through hole; 200. a bus bar; 210. a second through hole; 300. a connecting member; 310. a screw; 320. clamping; 321. a clip body; 322. a spring; 323. a clamping hole; 324. a contact; 400. conducting glue; 500. provided is a photovoltaic module.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 13, a method for connecting a junction box terminal and a bus bar according to the present invention will be described. A method for connecting a junction box terminal with a bus bar comprises the following steps:

obtaining a junction box wiring terminal 100 and a bus bar 200;

respectively coating conductive glue 400 on the contact surfaces of the junction box wiring terminal 100 and/or the bus bar 200;

the bus bar 200 is bent to bring the bus bar 200 into contact with the junction box terminal 100 and fixed by the conductive glue 400.

When the junction box wiring terminal 100 is connected with the bus bar 200, the contact surfaces of the junction box wiring terminal 100 and the bus bar 200 are respectively coated with the conductive glue 400, the bus bar 200 is bent to be contacted with the junction terminal 100 of the junction box and is fixedly adhered through the conductive glue 400, the junction box wiring terminal 100 and the bus bar 200 can be fixedly adhered by coating the conductive glue 400, the connection between the junction terminal 100 and the bus bar 200 is prevented from loosening, and the loose connection is prevented from being caused due to the fact that the connection is not tight.

The connecting method of the junction box wiring terminal and the bus bar has the advantages that: compared with the prior art, the connecting method of the junction box connecting terminal and the bus bar respectively coats the conductive glue 400 on the contact surfaces of the connecting terminal 100 and the bus bar 200 of the junction box, so that the bus bar 200 is connected with the connecting terminal 100 of the junction box, the operation is simple, the work difficulty and the labor intensity are reduced, the energy consumption is reduced, the production cost is saved, and the production efficiency and the product quality are improved.

As an embodiment of a method for connecting a junction box terminal to a bus bar according to the present invention, referring to fig. 1 to 10, an end of a junction box terminal 100 is provided with a first through hole 110; the bus bar 200 is provided with a second through hole 210; bringing the bus bar 200 into contact with the junction box connection terminal 100 and fixedly attaching by the conductive glue 400 includes: the bus bar 200 is bent to attach the bus bar 200 to the junction box terminal 100 in contact therewith and to align the first and second through holes 110 and 210, and the junction box terminal 100 is fixed to the bus bar 200 by the connector 300 through the first and second through holes 110 and 210. In this embodiment, the first through hole 110 and the second through hole 210 are both threaded holes, the connecting member 300 is a screw 310, the first through hole 110 is disposed at the end of the junction box wiring terminal 100, the thread depth of the threaded hole is set to 2 ± 0.5 mm, and if the thread depth is too small, the installation is not firm, if the thread depth is too deep, not only material waste is caused, but also the distance between the terminal and the component is small, if the thread depth is too deep, the risk of puncturing the photovoltaic component 500 is caused, and if the thread depth is too deep, unnecessary workload is caused to staff, and the production efficiency is affected; the distance from the first through hole 110 to the edge of the terminal 100 is greater than 3 mm, otherwise, the connection is easy to be loose; set up second through-hole 210 on converging belt 200, second through-hole 210 corresponds the position of binding post 100's first through-hole 110, scribble electrically conductive glue 400 respectively at the binding post 100 of terminal box or the contact surface that converges belt 200, will converge belt 200 and carry out 90 bendings, make converge belt 200 buckle in the binding post 100 contact of terminal box and paste fixedly through electrically conductive glue 400, paste fixedly after, adopt screw 310 to screw up binding post 100 and converging belt 200 through first through-hole 110 and second through-hole 210, in this embodiment, the purpose of scribbling glue can prevent that simple physical connection from appearing the not hard up in later stage, scribble electrically conductive glue 400 can prevent that the later stage from closely causing the contact failure because of physical connection. Thirdly, whether the screw 310 is screwed down or not can be judged through the overflow condition of the glue, and the glue only needs to be coated on the side of the bus bar 200 contacting the connecting terminal 100 or the side of the connecting terminal 100 based on the reasons and the consideration of reducing the cost.

It should be noted that, because the length of the bus bar 200 inevitably deviates, in order to ensure that the bus bar 200 hole has an adjustment space, the bus bar 200 mounting hole may be designed to be a long strip; in addition, in order to ensure the connection firmness, the screw 310 with a cap needs to be used as the screw 310, and the edge of the mounting hole of the bus bar 200 is smaller than more than 1 mm of the diameter of the cap of the screw 310; the length of the screw 310 is 2-3 mm larger than the sum of the thickness of the bus bar 200, the thickness of the junction box wiring terminal 100 and the thickness of the conductive adhesive, and if the length is too short, the connection is not firm, and if the length is too long, the photovoltaic module 500 is broken down.

It should be noted here that the terminal block connection terminal 100 and the bus bar 200 are connected more firmly by using the method of adhering the conductive glue 400 to the fixing matching screw 310 and screwing the same; as time goes on, the screw 310 will be subjected to mechanical fatigue due to the physical connection mode of tightening the simple screw 310, and the hidden danger of loosening will occur; the bus tape 200 is easily broken by the reaction force of the bus tape 400 simply by adhering and fixing the conductive adhesive 400 at the initial stage of connection. The two fixing methods are combined at the same time, so that the defects can be mutually compensated by strong combination. The screwing condition of the screw 310 can be judged according to the overflow condition of the conductive glue 400; the connecting method does not need to use a heating device, does not generate energy consumption, does not generate smoke, and does not harm the body of an operator; and moreover, the connection effect can be determined hundreds of percent through naked eyes and touch without the need of expensive detection equipment, so that the zero problem rate is achieved, the operation is simple and convenient, and the working difficulty is reduced.

As a specific embodiment of the method for connecting a junction box terminal block and a bus bar provided by the present invention, please refer to fig. 1 to 10, the junction box terminal block 100 is further provided with a third through hole 120 at an outer side of the first through hole 110; the length of the third through hole 120 is greater than the width of the bus bar 200, and the width of the third through hole 120 is greater than the thickness of the bus bar 200.

In this embodiment, the third through hole 120 is disposed three millimeters away from the edge of the junction box connection terminal 100, the length of the third through hole 120 needs to be one millimeter greater than the width of the bus bar 200, and the width of the third through hole 120 needs to be 0.5 millimeter greater than the thickness of the bus bar 200; the first through hole 110 is formed at a distance of 1 cm from the side of the third through hole 120 away from the end of the connection terminal 100, and the first through hole 110 may be a square hole or a circular hole having a diameter of three mm.

It should be noted that, the shape and size of the second through hole 210 are consistent with those of the first through hole 110, and if the first through hole 110 is a square hole, the second through hole 210 is also a square hole; if the first through hole 110 is a round hole with a diameter of three millimeters, the second through hole 210 is also a round hole with a diameter of three millimeters, and the bus bar 200 is bent at an angle of 90 degrees at a height parallel to the junction box connection terminal 100, so that the bent bus bar 200 is parallel to the connection terminal 100, the bus bar 200 can conveniently pass through the third through hole 120 of the connection terminal 100, and the second through hole 210 is aligned with the first through hole 110;

as an embodiment of the method for connecting a junction box terminal block and a bus bar provided by the present invention, referring to fig. 1 to 10, the contacting and fixing the bus bar 200 and the junction box terminal block 100 by the conductive glue 400 further comprises: the bus bar 200 is inserted through the third through hole 120, and the bus bar 200 is bent to be attached to the junction box terminal 100 in contact with the bus bar 200.

In this embodiment, after the bus bar 200 is bent by 90 °, the bus bar 200 is passed through the third through hole 120, and it should be noted that the conductive glue 400 may be applied before the bus bar 200 passes through the third through hole 120 or after the bus bar 200 passes through the third through hole 120, and then the conductive glue 400 on the terminal block connection terminal 100 side may be applied before the bus bar 200 passes through the third through hole 120 or after the bus bar 200 passes through the third through hole 120, and the timing of applying the conductive glue 400 is determined according to the operability and convenience of the field.

Another object of the present invention is to provide a connection structure of a terminal block and a bus bar, which is described with reference to fig. 1 to 13. A junction box terminal and bus bar connecting structure includes a junction box terminal 100 and a bus bar 200: the junction box wiring terminal 100 is provided with a first through hole 110 and a third through hole 120; the bus bar 200 is provided with a second through hole 210; the bus bar 200 is bent to pass through the third through hole 120 to be in contact with the junction box wiring terminal 100 and fixed; the contact surfaces of the junction box wiring terminal 100 and the bus bar 200 are provided with conductive glue 400; the connector 300 connects and fixes the junction box connection terminal 100 and the bus bar 200 through the first through hole 110 and the second through hole 210.

The connecting structure of the junction box wiring terminal and the bus bar has the advantages that: compared with the prior art, the connecting structure of the junction box connecting terminal and the bus bar of the invention is characterized in that a first through hole 110 and a second through hole 210 are arranged on the connecting terminal 100 of the junction box, a second through hole 210 corresponding to the first through hole 110 is arranged on the bus bar 200, the bus bar 200 is bent to pass through a third through hole 120 to be contacted with the connecting terminal 100, conductive glue 400 is respectively coated on the contact surfaces of the connecting terminal 100 and the bus bar 200, the bus bar 200 is adhered with the connecting terminal 100 of the junction box, and the connecting terminal 100 and the bus bar 200 are connected and fixed through the second through hole 210 and the second first through hole 110 by using a connecting piece 300; the operation is simple, the working difficulty and the labor intensity are reduced, the energy consumption is reduced, the production cost is saved, and the production efficiency and the product quality are improved.

As an embodiment of the method for connecting a junction box terminal and a bus bar according to the present invention, please refer to fig. 6 to 13, in which the connecting member 300 is a screw 310 or a clip 320; the screw 310 can screw the connection terminal 100 and the bus bar 200 tightly; the clamp 320 can clamp the wiring terminal 100 and the bus bar 200; any type of connector 300 may be used as long as it can connect and fasten the terminal 100 and the bus bar 200.

Referring to fig. 9 to 13, a clip 320 includes a clip main body 321 and a spring 322 located inside the clip main body 321; one side of the clip body 321 is provided with a contact 324, and the other side is provided with a clip hole 323 through which the contact 324 passes.

In this embodiment, the diameter of the contact 324 of the clip 320 is smaller than the diameter of the first through hole 110 and the second through hole 210, so that the clip body 321 is spread apart and clamped in a direction perpendicular to the connection terminal 100 and the bus bar 200 when in use, and the contact 324 passes through the aligned first through hole 110 and the second through hole 210 and the clip hole 323, so that the connection terminal 100 and the bus bar 200 can be clamped when the clip 320 is closed.

It should be noted here that before the clip body 321 is spread or after the clip body 321 is spread, the conductive glue 400 is applied to the inner side of the clip body 321; the diameters of the first through hole 110, the second through hole 210, and the card hole 323 are all 3 mm, and the diameter of the contact 324 is 2.8 mm.

Referring to fig. 9 to 13, as a specific embodiment of a method for connecting a junction box terminal and a bus bar according to the present invention, clamping holes 323 are formed at both sides of a clamp body 321, and a screw 310 sequentially passes through the clamping holes 323, the second through hole 210 and the first through hole 110 from one side of the clamp body 321, and passes through the clamping holes 323 at the other side of the clamp body 321 to be screwed.

In this embodiment, the card holes 323 are formed in both sides of the card body 321, the card holes 323 have the same diameter as the first through hole 110 and the second through hole 210, the card body 321 is spread when the junction terminal 100 and the bus bar 200 are clamped in a direction perpendicular to the junction terminal 100 and the bus bar 200, the card holes 323 on both sides are aligned with the first through hole 110 and the second through hole 210, the screw 310 is screwed in from the card hole 323 on one side and sequentially passes through the second through hole 210 and the first through hole 110, and then the terminal 100 and the bus bar 200 are screwed out from the card hole 323 on the other side of the card body 321.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.