CN214672635U - Grid line structure of battery piece - Google Patents

Abstract

The utility model relates to a battery piece grid line structure, including an at least main grid line and many thin grid lines, every the main grid line all with many thin grid line is perpendicular, every all be equipped with a plurality of solder joints on the main grid line, at least two thin grid line runs through the main grid line sets up, just thin grid line with the main grid line runs through the department and is located adjacent two the centre of solder joint. The utility model discloses an at least two thin grid lines run through the setting of main grid line, have increased the area that switches on to solved the unsatisfied local inefficacy that leads to of solar cell back of the body printing and produced the bad problem of subassembly shadow, reduced the human cost, promote the battery piece yield.

Description

Grid line structure of battery piece

Technical Field

The utility model relates to a solar energy technical field especially relates to a battery piece grid line structure.

Background

After the solar module enters the mainstream of the industry, the demand of the productivity is large, most of the process is adjusted along with the shortening of the welding machine time (the temperature demand becomes high, the power becomes large), so that the false soldering shadow and the irregular welding shadow appear successively, the statistics of a plurality of battery pieces in the industry is carried out, and the proportion of different shadows is about 5% -20%. The analysis of the irregular shadow single sheet is mainly caused by the fact that back electrode printing is not full and a graphic window is narrow in design, the single sheet test in the manufacturing of the battery is free of any abnormity, shadow with irregular area can appear after welding, different battery manufacturers do articles from the position of printing a back electrode, the printability is improved, slurry is optimized, the mesh number of the screen printing plate is changed and relieved, but the problem cannot be thoroughly solved, the mesh number of the back electrode screen printing plate is improved through the printability, and the shadow proportion is controlled to be about 2%.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the unsatisfied problem that leads to the local failure and produce the subassembly shade that leads to of solar cell back of the body printing, the utility model provides a battery piece grid line structure, including an at least main grid line and many thin grid lines, every the main grid line all with many thin grid line is perpendicular, every all be equipped with a plurality of solder joints on the main grid line, at least two thin grid line runs through the main grid line sets up, just thin grid line with the main grid line runs through the department and is located adjacent two the centre of solder joint.

Preferably, the solder joints are arranged along the length direction of the bus bar.

Furthermore, the distance between the thin grid lines is 0.95-1 mm.

Preferably, the length of the welding spot is 1.725-1.675 mm.

Further, the distance between two adjacent welding spots is 8.38-9.38 mm

Has the advantages that: the utility model discloses an at least two thin grid lines run through the setting of main grid line, have increased the area that switches on to solved the unsatisfied local inefficacy that leads to of solar cell back of the body printing and produced the bad problem of subassembly shadow, reduced the human cost, promote the battery piece yield.

Drawings

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

FIG. 2 is an enlarged view taken at A in FIG. 1;

in the figure: 1. a thin gate line; 2. welding spots; 3. a main gate line; 4. and a penetration part.

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.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with at least one implementation of the invention is included. In the description of the present invention, it is to be understood that the terms "upper", "top", "bottom", and the like refer to orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like 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.

Example 1

A grid line structure of a battery piece comprises at least one main grid line 3 and a plurality of thin grid lines 1, wherein each main grid line 3 is perpendicular to the plurality of thin grid lines 1, a plurality of welding spots 2 are arranged on each main grid line 3, at least two thin grid lines 1 penetrate through the main grid lines 3, and the penetrating positions 4 of the thin grid lines 1 and the main grid lines 3 are located between two adjacent welding spots 2.

A plurality of the solder joints 2 are arranged along the length direction of the main grid line 3.

The distance between the thin grid lines 1 is 0.95-1 mm.

The length of the welding spot 2 is 1.725-1.675 mm.

The distance between two adjacent welding spots 2 is 8.38-9.38 mm

The working principle is as follows: at least two thin grid lines 1 penetrate through the main grid lines 3, the conduction area is increased, the problem that the shadow of a component is poor due to partial failure caused by insufficient printing of the back electrode of the solar cell is solved, the labor cost is reduced, the yield of the cell is improved, the shadow abnormity is effectively improved, and the data statistics shadow proportion is 0%.

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 (5)

1. A battery piece grid line structure is characterized in that: the grid line structure comprises at least one main grid line (3) and a plurality of thin grid lines (1), wherein each main grid line (3) is perpendicular to the plurality of thin grid lines (1), a plurality of welding spots (2) are arranged on each main grid line (3), at least two thin grid lines (1) penetrate through the main grid lines (3), and the penetrating positions (4) of the thin grid lines (1) and the main grid lines (3) are located between every two adjacent welding spots (2).

2. The cell grid line structure of claim 1, wherein: the welding spots (2) are arranged along the length direction of the main grid line (3).

3. The cell grid line structure of claim 1, wherein: the distance between the thin grid lines (1) is 0.95-1 mm.

4. The cell grid line structure of claim 1, wherein: the length of the welding spot (2) is 1.725-1.675 mm.

5. The cell grid line structure of claim 1, wherein: the distance between two adjacent welding spots (2) is 8.38-9.38 mm.

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