CN211605168U

CN211605168U - Solar cell L-shaped interconnection sheet

Info

Publication number: CN211605168U
Application number: CN202020567941.4U
Authority: CN
Inventors: 朱解祖; 朱顺祖
Original assignee: Jiangsu Xinhengyun Precision Parts Co ltd
Current assignee: Jiangsu Xinhengyun Precision Parts Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-09-29
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses a solar cell L type interconnection piece, including first welding end and second welding area, first welding end side is connected with the second welding area, and sets up flutedly in the middle part of the first welding end, has seted up the bar groove on the welded plate of recess rear side, and has all seted up the through-hole on the welded plate of bar groove end both sides, the welded plate includes welded block and space bar groove, and has evenly seted up the space bar groove to the welded plate side, and the cross recess has been seted up to welded block middle part upper end. This solar cell L type interconnection piece, interconnection piece welding end are provided with the welding piece more than two, and wide with welding pin, can guarantee the reliability that interconnection piece and battery are connected, and interconnection piece inside sets up criss-cross groove and vertical groove and cross recess, compares with single silver foil area, can reduce interconnection piece internal stress to reduce the internal stress that interconnection piece and battery are connected, improve the reliability of connecting, guarantee the reliability of panel operation more easily.

Description

Solar cell L-shaped interconnection sheet

Technical Field

The utility model relates to a spacecraft solar cell battle array power field specifically is a solar cell L type interconnection piece.

Background

The interconnection sheet is an electrical element for realizing series connection of solar cells on the solar cell panel, the solar cells are connected through the interconnection sheet to form a battery pack, and the battery packs are connected through the connecting sheet. At present, thin sheets are adopted for interconnection pieces among solar cells for direct welding, the temperature difference of the solar cell panels is larger than 100 ℃ due to reciprocating operation on the sun surface and the sun surface, the interconnection pieces can generate thermal stress, and under the repeated action of the thermal stress, the interconnection pieces and welding points of the solar cells can fall off, so that the failure of the solar cell panels is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem lie in overcoming the problem that the background art provided, provide a solar cell L type interconnection piece.

In order to achieve the above object, the utility model provides a following technical scheme: an L-shaped interconnection sheet of a solar cell comprises a first welding end and a second welding belt, wherein the side surface of the first welding end is connected with the second welding belt, a groove is formed in the middle of the front end of the first welding end, arc-shaped grooves are formed in welding plates on two sides of the groove, a strip-shaped groove is formed in the welding plate on the rear side of the groove, and through holes are formed in the welding plates on two sides of the end of the strip-shaped groove;

the welding plate comprises a welding block and a spacing groove, the spacing groove is evenly formed in the side face of the welding plate, the cross groove is formed in the upper end of the middle of the welding block, a vertical groove is formed in the middle of a second welding belt of the lower side of the cross groove, and a transverse groove is formed in the welding block of the side face of the vertical groove.

Preferably, the interconnection sheet body formed by the first welding end and the second welding belt is formed by cutting and punching a silver belt with the thickness of 0.02mm, and the interconnection sheet body has the length of 22.0mm and the width of 12.0 mm.

Preferably, the width of first welding end is 4.5mm, and the radius of the arc recess that first welding end side set up is 0.2mm to the length of the recess that first welding end middle part was seted up is 6.3mm, width is 0.5mm, and the length of the inside strip groove of seting up of first welding end is 9.6mm, width is 0.6mm simultaneously.

Preferably, the width of the gap between the strip-shaped groove and the groove formed in the first welding end is 0.6mm, the distance between the through holes formed in the side surfaces between the strip-shaped groove and the groove is 2.5mm, the distance between the two groups of through holes formed in the same side is 9mm, and the radius of each through hole is 0.3 mm.

Preferably, the width of the second welding strip is 4.5mm, the width of a cross groove formed in the middle of the second welding strip is 0.5mm, the vertical length of the cross groove is 2.4mm, and the width of the cross groove is 3.0 mm.

Preferably, the length of the vertical groove formed in the second welding strip is 7.0mm, the width of the vertical groove is 0.5mm, the length of three groups of transverse grooves uniformly formed in the side surface of the vertical groove is 3mm, and the width between two adjacent groups of transverse grooves is 2.0 mm.

Preferably, three groups of spacing grooves have evenly been seted up in the second welding area outside, and the degree of depth in spacing groove is 1.25mm to the width in spacing groove is 0.5mm, and the width of the welding piece that sets up between two sets of adjacent spacing grooves simultaneously is 10mm, and the width between spacing groove upper end distance second welding area top is 2.5 mm.

Compared with the prior art, the beneficial effects of the utility model are that: this solar cell L type interconnection piece, interconnection piece welding end are provided with the welding piece more than two, and wide with welding pin, can guarantee the reliability that interconnection piece and battery are connected, and interconnection piece inside sets up criss-cross groove and vertical groove and cross recess, compares with single silver foil area, can reduce interconnection piece internal stress to reduce the internal stress that interconnection piece and battery are connected, improve the reliability of connecting, guarantee the reliability of panel operation more easily.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic view of a first weld end of the structure of the present invention;

fig. 3 is a schematic view of a second welding strip of the structure of the present invention.

In the figure: 1. a first weld end; 2. a second weld band; 3. welding the plate; 4. a strip-shaped groove; 5. a through hole; 6. a groove; 7. an arc-shaped groove; 8. a transverse groove; 9. a vertical groove; 10. welding the blocks; 11. a spacing groove; 12. a cross-shaped groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely 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 work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a solar cell L-shaped interconnection sheet comprises a first welding end 1 and a second welding belt 2, wherein the side surface of the first welding end 1 is connected with the second welding belt 2, a groove 6 is formed in the middle of the front end of the first welding end 1, arc-shaped grooves 7 are formed in welding plates 3 on two sides of the groove 6, a strip-shaped groove 4 is formed in the welding plate 3 on the rear side of the groove 6, through holes 5 are formed in the welding plates 3 on two sides of the end of the strip-shaped groove 4, each welding plate 3 comprises a welding block 10 and spacing grooves 11, the side surfaces of each welding plate 3 are uniformly provided with the spacing grooves 11, the upper end of the middle part of each welding block 10 is provided with a cross groove 12, a vertical groove 9 is formed in the middle part of the second welding belt 2 on the lower side of the cross groove 12, a transverse groove 8 is formed in the welding block 10 on the side surface of the vertical groove 9, an interconnection sheet body formed by the first welding end 1 and the second welding belt, the length of the interconnection sheet body is 22.0mm, and the width of the interconnection sheet body is 12.0 mm; the inner stress is eliminated by stress relief annealing at 100-200 ℃ after punch forming, the annealed surface is obtained by cleaning with an organic cleaning agent, the manufacture of connecting sheets is simple and convenient, the labor intensity is low, the efficiency is high, and the requirement of automatic production can be met, because a plurality of 10 are adopted to replace welding pins for welding and a plurality of 11 are arranged, the structure can utilize the space in the plane, the welding is reliable, the structural stress can be effectively reduced, the weight is light, thereby the service life of the solar cell panel is prolonged,

the width of first welding end 1 is 4.5mm, and the radius of the arc recess 7 that the 1 side of first welding end set up is 0.2mm, and the length of the recess 6 of seting up in 1 middle part of first welding end is 6.3mm, the width is 0.5mm, the length of the bar groove 4 of seting up in 1 inside of first welding end simultaneously is 9.6mm, the width is 0.6mm, play the effect of reducing 1 stress of first welding end, the interval width between bar groove 4 and the recess 6 of seting up on 1 of first welding end is 0.6mm, and the interval of the through-hole 5 that the side was seted up between bar groove 4 and the recess 6 is 2.5mm, and the interval of the two sets of through-holes 5 that the homonymy was seted up is 9mm, through-hole 5 radius is 0.3 mm.

The width of the second welding strip 2 is 4.5mm, the width of a cross groove 12 formed in the middle of the second welding strip 2 is 0.5mm, the vertical length of the cross groove 12 is 2.4mm, the width of the cross groove 12 is 3.0mm, the length of a vertical groove 9 formed in the second welding strip 2 is 7.0mm, the width of the vertical groove 9 is 0.5mm, the length of three groups of transverse grooves 8 uniformly formed in the side surface of the vertical groove 9 is 3mm, the width between two adjacent groups of transverse grooves 8 is 2.0mm, the transverse grooves 8, the vertical grooves 9 and the cross groove 12 are arranged in a crossed mode to achieve the effect of stress release, three groups of spacing grooves 11 are uniformly formed in the outer side of the second welding strip 2, the depth of the spacing grooves 11 is 1.25mm, the width of the spacing grooves 11 is 0.5mm, the width of a welding block 10 arranged between two adjacent groups of spacing grooves 11 is 10mm, and the width between the upper end of the spacing grooves 11 and the top of the second welding strip 2.5mm, increase welding width, improve fixed effect, the reliability of welding between the solar cell can be guaranteed in the release of stress through interval groove 11 to guarantee solar cell panel's reliability, the internal stress distributes for a short time, light in weight, with low costs, the reliability is high, can satisfy batchization solar cell panel connection demand.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A solar cell L-shaped interconnection sheet comprising a first solder terminal (1) and a second solder strip (2), characterized in that: the side face of the first welding end (1) is connected with a second welding belt (2), the middle of the front end of the first welding end (1) is provided with a groove (6), the welding plates (3) on the two sides of the groove (6) are provided with arc-shaped grooves (7), the welding plates (3) on the rear side of the groove (6) are provided with strip-shaped grooves (4), and the welding plates (3) on the two sides of the end of each strip-shaped groove (4) are provided with through holes (5);

the welding plate (3) comprises a welding block (10) and spacing grooves (11), the spacing grooves (11) are evenly formed in the side face of the welding plate (3), cross grooves (12) are formed in the upper end of the middle of the welding block (10), vertical grooves (9) are formed in the middle of second welding belts (2) on the lower side of the cross grooves (12), and transverse grooves (8) are formed in the welding block (10) on the side face of the vertical grooves (9).

2. The L-shaped solar cell interconnection sheet according to claim 1, wherein: the interconnection piece body that first welding end (1) and second welding area (2) constitute adopts the silver area of 0.02mm thickness through tailorring stamping forming, and interconnection piece body length is 22.0mm, and the width is 12.0 mm.

3. The L-shaped solar cell interconnection sheet according to claim 1, wherein: the width of first welding end (1) is 4.5mm, and the radius of arc recess (7) that first welding end (1) side set up is 0.2mm to the length of recess (6) that first welding end (1) middle part was seted up is 6.3mm, the width is 0.5mm, and the length of the inside bar groove (4) of seting up of first welding end (1) is 9.6mm, the width is 0.6mm simultaneously.

4. The L-shaped solar cell interconnection sheet according to claim 1, wherein: the interval width between the strip-shaped groove (4) and the groove (6) formed in the first welding end (1) is 0.6mm, the distance between the through holes (5) formed in the side face between the strip-shaped groove (4) and the groove (6) is 2.5mm, the distance between the two groups of through holes (5) formed in the same side is 9mm, and the radius of each through hole (5) is 0.3 mm.

5. The L-shaped solar cell interconnection sheet according to claim 1, wherein: the width of the second welding belt (2) is 4.5mm, the width of a cross groove (12) formed in the middle of the second welding belt (2) is 0.5mm, the vertical length of the cross groove (12) is 2.4mm, and the width of the cross groove (12) is 3.0 mm.

6. The L-shaped solar cell interconnection sheet according to claim 1, wherein: the length of the vertical groove (9) formed in the second welding strip (2) is 7.0mm, the width of the vertical groove (9) is 0.5mm, the length of the three groups of transverse grooves (8) uniformly formed in the side face of the vertical groove (9) is 3mm, and the width between the two adjacent groups of transverse grooves (8) is 2.0 mm.

7. The L-shaped solar cell interconnection sheet according to claim 1, wherein: three groups of spacing grooves (11) have evenly been seted up in second welding area (2) outside, and the degree of depth of spacing groove (11) is 1.25mm to the width of spacing groove (11) is 0.5mm, and the width of the welding piece (10) that sets up between adjacent two sets of spacing grooves (11) is 10mm simultaneously, and the width between spacing groove (11) upper end distance second welding area (2) top is 2.5 mm.