CN209822660U

CN209822660U - Solar photovoltaic module

Info

Publication number: CN209822660U
Application number: CN201920849206.XU
Authority: CN
Inventors: 陈志浩; 杨峰; 许涛
Original assignee: Canadian Solar Manufacturing Changshu Inc; CSI Solar Technologies Inc; Atlas Sunshine Power Group Co Ltd
Current assignee: Canadian Solar Inc; CSI Cells Co Ltd; Canadian Solar Manufacturing Changshu Inc
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2019-12-20
Anticipated expiration: 2029-06-06

Abstract

The utility model provides a solar photovoltaic module, it includes a plurality of battery strings that set up side by side and connects respectively in each the interconnection structure of battery string tip. Each battery string is provided with a plurality of battery pieces which are sequentially connected in an overlapped mode at the edge, the interconnection structure comprises leading-out strips extending along the arrangement direction of the battery strings, the end portions of at least two adjacent leading-out strips are connected in an overlapped mode to achieve interconnection of the adjacent battery strings, and the overlapped positions of the at least two adjacent leading-out strips are located between two opposite edges of the same battery piece. According to the arrangement, the welding times are reduced, manual welding for many times is avoided, the operation mode is simplified, the possibility of quality problems is reduced, the qualified rate of finished products is improved, and the overall repair rate is reduced.

Description

Solar photovoltaic module

Technical Field

The utility model relates to a solar photovoltaic technology field especially relates to a solar photovoltaic module.

Background

The laminated assembly technology is an efficient assembly technology, is different from the traditional packaging technology, and can effectively improve the conversion efficiency of the assembly. The technology of the tile-stacked assembly can increase the effective power generation area and fully utilize the area of the assembly. More than 6% of the cells can be placed in the same area than in a conventional module. The stack technology optimizes the structure of the assembly, greatly reduces the internal loss of the assembly and greatly improves the output power of the assembly. The minimum power loss in the packaging process of the assembly is ensured, the influence of reverse current and hot spot effect generated by the assembly is effectively reduced, and the assembly has good reliability. The technology of shingle assembly is therefore a future trend. However, the yield and the price of the conventional laminated assembly in mass production are lower than those of the conventional crystalline silicon assembly. According to the production process of the conventional laminated tile assembly, the battery string negative electrode lead-out wires are of a plurality of I-shaped combined type interconnection structures, the battery piece lamination equipment is welded on the negative electrodes of the battery strings, after subsequent typesetting, the fixed-length lap welding interconnection structures are manually placed in the battery string negative electrode interconnection structure connection mode, lap welding is carried out at two ends, the operation mode is complex in operation, and the quality risk is large after completion.

Therefore, there is a need to provide an improved solar photovoltaic module to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can simplify interconnect structure welding process's solar PV modules.

In order to realize the above-mentioned utility model, the utility model provides a solar photovoltaic module, include a plurality of battery strings that set up side by side and connect respectively in each the interconnection structure of battery string tip, its characterized in that: each battery string is provided with a plurality of battery pieces which are sequentially connected in an overlapped mode at the edge, the interconnection structure comprises leading-out strips extending along the arrangement direction of the battery strings, the end portions of at least two adjacent leading-out strips are connected in an overlapped mode to achieve interconnection of the adjacent battery strings, and the overlapped positions of the at least two adjacent leading-out strips are located between two opposite edges of the same battery piece.

As a further improvement of the utility model, each the battery cluster has the marginal battery piece that is located the edge, interconnect structure has and connects perpendicularly marginal battery piece with draw forth the vertical solder strip between the strip.

As a further improvement of the utility model, be provided with welding electrode on the marginal battery piece, the interconnect structure still have with draw forth a parallel arrangement's horizontal welding area, horizontal welding area set up in on the marginal battery piece and with welding electrode electric connection.

As a further improvement of the utility model, it draws forth the strip and divide into the A type and draws forth the strip and the B type, the A type is drawn forth the length of strip and is greater than the width of battery cluster, the length that the B type was drawn forth the strip is short in the length that the strip was drawn forth to the A type.

As a further improvement of the present invention, the a-type extraction bar has only one end extending beyond the edge of the corresponding battery string in the arrangement direction of the battery string.

As a further improvement of the utility model, all battery strings adopt parallel connection among the solar PV modules, the battery string has two marginal battery strings that are located both sides edge, one of them marginal battery string adopts the B type is drawn forth the strip, and all the other battery strings adopt the A type to draw forth the strip, and the A type is drawn forth the strip and all is drawn forth the strip orientation towards the B type and is extended beyond the battery string rather than corresponding.

As a further improvement of the utility model, be provided with welding electrode on the marginal battery piece, interconnect structure still have with draw forth a parallel arrangement's horizontal welding area and connect horizontal welding area with draw forth the vertical welding area of strip, horizontal welding area set up in on the marginal battery piece and with welding electrode electric connection, and the extension length who transversely welds the area is less than the width of battery cluster.

As a further improvement of the utility model, the length that the strip was drawn forth to the B type with the length in horizontal welding area is unanimous, and the B type draw forth the strip with horizontal welding area both ends are followed battery cluster length direction and are aimed at the setting.

As a further improvement of the utility model, the one end of the strip is drawn forth to the A type with transversely weld the corresponding end in area and align the setting along battery cluster length direction, the other end is followed draw forth a extending direction and extend and surpass corresponding battery cluster.

As a further improvement of the utility model, all the battery strings in the solar photovoltaic module are connected in parallel, and the battery strings are divided into a left group and a right group; in the arrangement direction of the battery strings, only one end of each lead-out strip extends beyond the edge of the corresponding battery string; and the extending direction of the leading-out strip connected with the battery string in the left group is consistent, and the extending direction of the leading-out strip connected with the battery string in the right group is opposite to the extending direction of the leading-out strip connected with the battery string in the left group.

The utility model has the advantages that: the utility model discloses solar PV modules is through making the interconnection of the tip overlap connection of the strip of drawing forth of at least double-phase neighbour in the battery cluster interconnected structure in order to realize adjacent battery cluster, makes the overlap position of the strip of drawing forth of at least two neighbours simultaneously be in between the double-phase opposite edge of same battery piece, and not only reducible welding number of times avoids many manual welding from this, and the operation mode is retrencied, reduces the possibility that quality problems appear, improves the finished product qualification rate to whole repair rate has been reduced. Furthermore, the utility model discloses an improve simple structure and easily operate, the volume production of being convenient for is implemented, the follow-up automatic welded development of being convenient for. Furthermore, the utility model discloses the setting of well overlap position can make the welding effect can obtain the guarantee.

Drawings

Fig. 1 is a schematic layout diagram of the solar photovoltaic module according to the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a schematic diagram of an interconnection structure with a type a tab on an edge cell of a solar photovoltaic module according to the present invention.

Fig. 4 is a schematic diagram of an interconnection structure with a B-type tab on an edge cell of a solar photovoltaic module according to the present invention.

Fig. 5 is a schematic view of another preferred embodiment of the solar photovoltaic module of the present invention.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural or functional changes made by those skilled in the art according to these embodiments are all included in the scope of the present invention.

Referring to fig. 1 to 4, a solar photovoltaic module 100 according to a preferred embodiment of the present invention includes a plurality of parallel battery strings 1 and a plurality of interconnection structures 2 respectively connected to each of the battery strings 1. Each battery string 1 is provided with a plurality of battery sheets 11 which are sequentially connected in an overlapped mode at the edge.

The utility model discloses in, solar PV modules 100 is shingled formula solar PV modules, contains one row or multirow solar cell cluster group in the shingled formula solar PV modules, and every solar cell cluster group comprises one or more solar cell cluster of inline, and every solar cell cluster comprises two or more solar wafer of inline. The adjacent edges of two adjacent solar cells in the same solar cell string are mutually overlapped, the overlapped area adopts a conductive material, such as conductive adhesive, and conductive connection is formed between the two adjacent solar cells.

The interconnection structures 2 are provided with leading-out strips 21 which extend along the arrangement direction of the battery strings 1 to connect the adjacent battery strings 1. The end parts of at least two adjacent lead-out strips 21 are connected in an overlapping mode to achieve interconnection of the adjacent battery strings 1, and the overlapping positions of the at least two adjacent lead-out strips 21 are located between two opposite edges of the same battery piece 11.

For example, in the present embodiment, as shown in fig. 2 to 4, several of the lead-out bars 21 include a first lead-out bar 211 and a second lead-out bar 212 connecting adjacent two battery strings 1 in the extending direction thereof. The first lead-out strip 211 extends towards the second lead-out strip 212 and exceeds the battery string 1 connected with the first lead-out strip, and is electrically connected with the second lead-out strip 212 through the exceeding part.

The utility model discloses an adjacent first strip 211 and the second of drawing forth draws forth strip 212 and directly carries out the overlap joint welding, realizes that the electrical property switches on, reduces the welding number of times, avoids many times manual welding, and the operation mode is retrencied, reduces the possibility that quality problems appears, improves the finished product qualification rate to whole repair rate has been reduced. Furthermore, the utility model discloses an improve simple structure and easily operate, the volume production of being convenient for is implemented, the follow-up automatic welded development of being convenient for. Furthermore, the utility model discloses the setting of well overlap position can make welding effect can obtain the guarantee, avoids drawing strip 21 too much position and stretches out battery piece 11 edge and lead to being difficult to the management and control, and then bumps the deformation scheduling problem and lead to welding failure.

Referring to fig. 1 and 2, each of the cell strings 1 has an edge cell 12 at an edge, and the interconnect structure 2 further has a longitudinal solder strip 22 vertically connected between the edge cell 12 and the lead-out strip 21. The edge cell piece 12 is provided with a welding electrode, and the interconnection structure 2 is further provided with a transverse welding strip 23 arranged in parallel with the leading-out strip 21. The transverse solder strip 23 is disposed on the edge cell piece 12 and electrically connected to the welding electrode. The lead-out strip 21, the longitudinal solder strip 22 and the transverse solder strip 23 may be integrally formed.

Referring to fig. 1 to 4, in a preferred embodiment of the present invention, the first lead-out strip 211 and the second lead-out strip 212 are overlapped and welded to each other. That is, as described above, the overlapped portion of the lead-out bars 21 of the edge cells 12 of the adjacent cell strings 1 is subjected to one lap welding, so that the electrical conduction of the adjacent cell strings 1 can be realized, the number of welding times is reduced, multiple manual welding is avoided, and the operation mode is simplified.

Specifically, referring to fig. 3 and 4, in the present embodiment, the lead-out strips 21 are divided into two types, i.e., a type a lead-out strip and a type B lead-out strip, and the length of the type a lead-out strip is greater than the width of the battery string 1; the length of the B-type tab is shorter than the length of the a-type tab and is preferably set to be no greater than the width of the battery string 1. And, in the direction of arranging the battery cluster 1, only one end of the A-type extraction strip extends beyond the edge of the corresponding battery cluster 1.

Referring to fig. 1 and 2, all the cell strings 1 in the solar photovoltaic module are connected in parallel, the cell string 1 has two edge cell strings 13 located at the edges of two sides, one of the edge cell strings 13 adopts the B-type leading-out strip, the other cell strings 1 adopt the a-type leading-out strips, and the a-type leading-out strips extend to the B-type leading-out strip direction and exceed the corresponding cell strings 1.

The utility model discloses in, battery cluster 1 sets up to six, and each battery cluster 1 sets up a plurality of battery pieces 11, six battery cluster 1's negative pole is connected to interconnect 2. Thus, one edge cell string 13 located at the edge among the six cell strings 1 is connected to a B-type lead-out bar, the remaining five cell strings 1 are connected to an a-type lead-out bar, and the a-type lead-out bar growing portion extends in a direction toward the B-type lead-out bar. That is, when the type B tab is placed on the right side, the five type a tabs are sequentially connected on the left side with the respective extensions on the right side. The same holds true when the type B tab is placed on the left side.

The extension of the transverse solder strips 23 in this embodiment is less than the width of the battery string. The length of the B-type leading-out strip is consistent with that of the transverse welding strip 23, and the B-type leading-out strip and the two ends of the transverse welding strip 23 are aligned along the length direction of the battery string 1.

One end of the A-type leading-out strip and the corresponding end of the transverse welding strip 23 are arranged in alignment along the length direction of the battery string 1, and the other end of the A-type leading-out strip extends beyond the corresponding battery string 1 along the extending direction of the leading-out strip and is in overlapped welding with the adjacent leading-out strip.

Referring to fig. 5, another preferred embodiment of the present invention is shown, in this embodiment, all the lead-out strips 21 are disposed as the a-type lead-out strips shown in fig. 3, that is, one end is aligned with the transverse solder strip 23, and the other end extends beyond the corresponding battery string 1; in this embodiment, all the battery strings 1 may be divided into two groups, i.e., left and right groups, and the extension direction of the lead-out strip 21 connected to the battery string 1 in the left group is the same as the extension direction of the lead-out strip 21 connected to the battery string 1 in the right group, and the extension direction of the lead-out strip 21 connected to the battery string 1 in the left group is opposite to the extension direction of the lead-out strip 21 connected to the battery string 1 in the left group, and the number of the battery strings 1 in each group is not limited.

As shown in the embodiment of fig. 5, the a-type tab to which one of the edge cell strings 13 is connected is reversed compared to the other a-type tabs, thereby achieving overlap welding with the adjacent a-type tabs. The arrangement mode can lead all the leading-out strips 21 to be consistent in structure, and the other leading-out strip does not need to be formed independently, so that the operation is more convenient.

The above detailed description is only for the purpose of illustrating the practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a solar photovoltaic module, includes a plurality of battery strings that set up side by side and connects respectively in each the interconnection structure of battery string tip, its characterized in that: each battery string is provided with a plurality of battery pieces which are sequentially connected in an overlapped mode at the edge, the interconnection structure comprises leading-out strips extending along the arrangement direction of the battery strings, the end portions of at least two adjacent leading-out strips are connected in an overlapped mode to achieve interconnection of the adjacent battery strings, and the overlapped positions of the at least two adjacent leading-out strips are located between two opposite edges of the same battery piece.

2. The solar photovoltaic module of claim 1, wherein: each battery string is provided with an edge battery piece at the edge, and the interconnection structure is provided with a longitudinal welding strip vertically connected between the edge battery piece and the leading-out strip.

3. The solar photovoltaic module of claim 2, wherein: the edge battery piece is provided with a welding electrode, the interconnection structure is further provided with a transverse welding strip arranged in parallel with the leading-out strip, and the transverse welding strip is arranged on the edge battery piece and electrically connected with the welding electrode.

4. The solar photovoltaic module of claim 1, wherein: the leading-out strip is divided into an A-type leading-out strip and a B-type leading-out strip, the length of the A-type leading-out strip is larger than the width of the battery string, and the length of the B-type leading-out strip is shorter than that of the A-type leading-out strip.

5. The solar photovoltaic module of claim 4, wherein: in the arrangement direction of the battery strings, only one end of the A-type leading-out strip extends beyond the edge of the corresponding battery string.

6. The solar photovoltaic module of claim 5, wherein: all the cell strings in the solar photovoltaic component are connected in parallel, the cell strings are provided with two edge cell strings located at edges of two sides, one edge cell string adopts the B-type leading-out strip, the rest cell strings adopt A-type leading-out strips, and the A-type leading-out strips extend towards the B-type leading-out strip direction to exceed the corresponding cell strings.

7. The solar photovoltaic module of claim 6, wherein: the edge battery piece is provided with a welding electrode, the interconnection structure is further provided with a transverse welding strip arranged in parallel with the leading-out strip and a longitudinal welding strip connected with the transverse welding strip and the leading-out strip, the transverse welding strip is arranged on the edge battery piece and electrically connected with the welding electrode, and the extension length of the transverse welding strip is smaller than the width of the battery string.

8. The solar photovoltaic module of claim 7, wherein: the length of the B-type leading-out strip is consistent with that of the transverse welding strip, and the B-type leading-out strip and the two ends of the transverse welding strip are aligned along the length direction of the battery string.

9. The solar photovoltaic module of claim 7, wherein: one end of the A-type leading-out strip and the corresponding end of the transverse welding strip are arranged in alignment along the length direction of the battery string, and the other end of the A-type leading-out strip extends beyond the corresponding battery string along the extending direction of the leading-out strip.

10. The solar photovoltaic module of claim 1, wherein: all the battery strings in the solar photovoltaic module are connected in parallel, and the battery strings are divided into a left group and a right group; in the arrangement direction of the battery strings, only one end of each lead-out strip extends beyond the edge of the corresponding battery string; and the extending direction of the leading-out strip connected with the battery string in the left group is consistent, and the extending direction of the leading-out strip connected with the battery string in the right group is opposite to the extending direction of the leading-out strip connected with the battery string in the left group.