CN209843730U

CN209843730U - Photovoltaic half-piece assembly confluence welding structure

Info

Publication number: CN209843730U
Application number: CN201920915660.0U
Authority: CN
Inventors: 施晓丹; 谢云飞
Original assignee: Hanhua New Energy (qidong) Co Ltd
Current assignee: Hanhua New Energy (qidong) Co Ltd; Hanwha Q Cells Qidong Co Ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2019-12-24
Anticipated expiration: 2029-06-18

Abstract

The utility model discloses a photovoltaic half-piece assembly confluence welding structure, which comprises a first half-piece battery piece, a second half-piece battery piece and a confluence belt arranged between the first half-piece battery piece and the second half-piece battery piece, wherein the first half-piece battery piece is provided with a plurality of upper welding belts, the second half-piece battery piece is provided with a plurality of lower welding belts, the upper welding belts comprise a first welding belt fixedly arranged on the first half-piece battery piece and a first extending part extending from the end part of the first welding belt, and the extending direction of the first extending part is not parallel to the length direction of the confluence belt; the lower welding strip comprises a second welding strip fixedly arranged on the second half battery piece and a second extending portion extending out of the end portion of the second welding strip, and the extending direction of the second extending portion is not parallel to the length direction of the bus bar. The utility model discloses an upper welding strip and lower welding strip all have the structure of buckling in the photovoltaic half piece subassembly welded structure that converges, can guarantee to have the welding strip and converge and have sufficient area of weld, reinforcing welding fastness.

Description

Photovoltaic half-piece assembly confluence welding structure

Technical Field

The utility model relates to a photovoltaic technology field especially relates to a half piece subassembly of photovoltaic welded structure that converges.

Background

With the continuous consumption of energy and the continuous rise of energy price, the development and utilization of new energy become the main subject of research in the energy field at present. Since solar energy has many advantages such as no pollution, no regional limitation, inexhaustible energy, and the like, research on solar power generation becomes one of the popular directions for developing new energy. At present, solar cell power generation is a main way for people to use solar energy. With the continuous development of photovoltaic technology, photovoltaic module products as semiconductor devices for converting solar energy into electric energy are rapidly developed, and the application fields are wider and wider.

Solar power generation is a technology for directly converting light energy into electric energy by utilizing the photovoltaic effect of light at a semiconductor interface. The photovoltaic module is used as a core unit of solar power generation and is generally formed by encapsulating cover plate glass, an encapsulation adhesive film, a battery piece, an encapsulation adhesive film and a rear plate. In order to reduce the electricity consumption cost of solar power generation, the most direct way is to increase the electricity generation amount per unit area of a photovoltaic module, the way of increasing the electricity generation amount per unit area includes improving the conversion efficiency of a cell, reducing incident light loss, reducing internal consumption and the like, and a half-cell module is a module structure capable of reducing internal consumption to a great extent, and the basic principle of the module structure is to cut a cell into two half-cells, so that the internal circuit loss can be reduced.

Since the current half-chip assemblies are designed to be divided into upper and lower parts, the upper and lower parts are used for collecting the circuit to the middle collecting belt. The current convergence method includes two types, one is: the upper welding strip and the lower welding strip are welded on the bus bar strip in an aligned mode, the welding area is small due to the welding mode, and the risk of welding failure is avoided. The second method comprises the following steps: the upper and lower welding strips are welded on the bus bar in an overlapping manner, and although the welding mode has enough welding area, the thickness of the overlapping part is increased, and the reliability of the product is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art, the utility model provides a photovoltaic half piece subassembly welded structure that converges to guarantee to have sufficient welding area, and strengthen the welding fastness, technical scheme is as follows:

the utility model provides a photovoltaic half-piece assembly welding structure that converges, it includes first half battery piece, second half battery piece and sets up converge the area between first half battery piece and second half battery piece, be provided with a plurality of upper welding strips on the first half battery piece, be provided with a plurality of lower welding strips on the second half battery piece, the upper welding strip is including fixed setting up the first welding strip on the first half battery piece and the first extension that stretches out from the tip of first welding strip, first extension sets up on converging the area, the extending direction of first extension and the length direction nonparallel of converging the area; the lower welding strip comprises a second welding strip fixedly arranged on the second half battery piece and a second extending portion extending out of the end portion of the second welding strip, the second extending portion is arranged on the bus bar strip, and the extending direction of the second extending portion is not parallel to the length direction of the bus bar strip.

Further, the first extension part and the second extension part are arranged in parallel.

Furthermore, a preset first included angle is kept between the first extending portion and the first welding strip.

Further, the first included angle is greater than zero degrees.

Furthermore, a preset second included angle is kept between the second extending portion and the second welding strip.

Further, the second included angle is greater than zero degrees.

Furthermore, the upper welding strips and the lower welding strips are arranged in a one-to-one correspondence manner, and a preset distance is kept between the first extending part and the second extending part arranged in a corresponding manner.

Further, the width of the first extending portion in the extending direction of the bus bar is larger than the width of the first welding band in the extending direction of the first half battery piece.

Further, the width of the second extending portion in the extending direction of the bus bar is larger than the width of the second welding strip in the extending direction of the first half battery piece.

Furthermore, the first welding strip and the second welding strip are both in a strip-shaped structure.

The utility model provides a beneficial effect that technical scheme brought as follows:

the utility model discloses an upper welding strip and lower welding strip all have the structure of buckling in the photovoltaic half piece subassembly welded structure that converges, can guarantee to have the welding strip and converge and have sufficient area of weld, reinforcing welding fastness.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments 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 perspective view of a photovoltaic half-sheet assembly junction welding structure provided by an embodiment of the present invention;

fig. 2 is an enlarged view of a first extension portion and a second extension portion of a photovoltaic half-sheet assembly bus bar welded structure according to an embodiment of the present invention;

fig. 3 is a top view of a photovoltaic half-sheet assembly junction welding structure according to an embodiment of the present invention.

Wherein the reference numerals include: 1-a first half cell, 2-a second half cell, 3-a bus bar, 4-an upper solder strip, 41-a first solder strip, 42-a first extension, 5-a lower solder strip, 51-a second solder strip, 52-a second extension.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

In an embodiment of the utility model, a photovoltaic half piece subassembly welding structure that converges is provided, the concrete structure refers to fig. 1 and fig. 3, and it includes first half piece battery piece 1, second half piece battery piece 2 and sets up converge area 3 between first half piece battery piece 1 and second half piece battery piece 2, be provided with a plurality of upper solder strips 4 on the first half piece battery piece 1, be provided with a plurality of lower solder strips 5 on the second half piece battery piece 2, first solder strip 41 and second solder strip 51 are rectangular bar-shaped structure.

The upper welding strip 4 has the following specific structure: go up and weld structure of area 4 and refer to fig. 1 and 2, it includes that fixed the setting is in to go up to weld area 4 first weld area 41 on the first half battery piece 1 and the first extension 42 that stretches out from the tip of first weld area 41, first extension 42 welds on converging area 3, the extending direction of first extension 42 with the length direction nonparallel that converges area 3, promptly first extension 42 keeps predetermined first contained angle with first between welding area 41, first contained angle is greater than zero degree for it has the bending structure to go up to weld area 4, can guarantee to have to weld area 4 and converge area 3 and have sufficient welding area, does not influence the welding fastness.

The specific structure of the lower welding strip 5 is as follows: weld down and take 5's structure refer to fig. 1 and 2, weld down and take 5 including fixed the setting second on the second half cell piece 2 welds area 51 and welds the second extension 52 that the tip of taking 51 stretches out from the second, the welding of second extension 52 is on converging area 3, the extending direction of second extension 52 with the length direction nonparallel that converges area 3, second extension 52 and second weld and take and 51 between keep predetermined second contained angle, the second contained angle is greater than zero degree for weld down and take 5 to have a bending structure, can guarantee to weld down and take 5 and converge and take 3 sufficient welding area, do not influence the welding fastness.

The upper welding strips 4 and the lower welding strips 5 are arranged in a one-to-one correspondence manner, and a preset distance is kept between the first extending portion 42 and the second extending portion 52 arranged in a corresponding manner, that is, the preset distance is kept between the first extending portion 42 and the second extending portion 52 closest to the first extending portion 42, so that the first extending portion 42 is not in contact with the second extending portion 52, and no overlapping portion is formed to increase the welding thickness. The first extension 42 and the second extension 52 are preferably arranged in parallel for easy machining.

In the embodiment of the present invention, the first extending portion 42 is flattened to form a flat structure, so that the width of the first extending portion 42 along the extending direction of the bus bar 3 is greater than the width of the first welding strip 41 along the extending direction of the first half cell 1, so as to increase the welding area and ensure that the welding area is sufficient. Similarly, the first extension portion 42 is flattened to form a flat structure, so that the width of the second extension portion 52 in the extending direction of the bus bar 3 is larger than that of the second welding strip 51 in the extending direction of the first half cell 2, thereby increasing the welding area and ensuring a sufficient welding area.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The photovoltaic half-sheet assembly confluence welding structure is characterized by comprising a first half-sheet battery sheet (1), a second half-sheet battery sheet (2) and a confluence belt (3) arranged between the first half-sheet battery sheet (1) and the second half-sheet battery sheet (2), wherein a plurality of upper welding belts (4) are arranged on the first half-sheet battery sheet (1), and a plurality of lower welding belts (5) are arranged on the second half-sheet battery sheet (2);

the upper welding strip (4) comprises a first welding strip (41) fixedly arranged on the first half battery piece (1) and a first extending portion (42) extending out of the end portion of the first welding strip (41), the first extending portion (42) is arranged on the bus bar (3), and the extending direction of the first extending portion (42) is not parallel to the length direction of the bus bar (3); the lower welding strip (5) comprises a second welding strip (51) fixedly arranged on the second half battery piece (2) and a second extending portion (52) extending out of the end portion of the second welding strip (51), the second extending portion (52) is arranged on the current collecting strip (3), and the extending direction of the second extending portion (52) is not parallel to the length direction of the current collecting strip (3).

2. The photovoltaic half sheet assembly bus bar welding structure according to claim 1, wherein the first extension portion (42) and the second extension portion (52) are disposed in parallel.

3. The photovoltaic half-blade assembly busbar welding structure according to claim 1, wherein a preset first angle is maintained between the first extending portion (42) and the first welding strip (41).

4. The photovoltaic half wafer assembly bus bar bonding structure of claim 3, wherein said first included angle is greater than zero degrees.

5. The photovoltaic half-sheet assembly busbar welding structure according to claim 1, wherein a preset second angle is maintained between the second extending portion (52) and the second welding strip (51).

6. The photovoltaic half wafer assembly bus bar bonding structure of claim 5, wherein said second included angle is greater than zero degrees.

7. The photovoltaic half-sheet assembly bus bar welding structure according to claim 1, wherein the upper welding strips (4) and the lower welding strips (5) are arranged in a one-to-one correspondence, and a preset distance is kept between the first extending portion (42) and the second extending portion (52) arranged in a corresponding manner.

8. The photovoltaic half-wafer assembly busbar welding structure according to claim 1, wherein a width of the first extension portion (42) in an extending direction of the busbar (3) is larger than a width of the first solder ribbon (41) in an extending direction of the first half-wafer (1).

9. The photovoltaic half-wafer assembly busbar welding structure according to claim 1, wherein the width of the second extension portion (52) in the extending direction of the busbar (3) is larger than the width of the second solder ribbon (51) in the extending direction of the first half-wafer (1).

10. The photovoltaic half-sheet assembly busbar welding structure according to claim 1, wherein the first solder ribbon (41) and the second solder ribbon (51) are each an elongated configuration.