CN219303675U

CN219303675U - Novel battery piece positive electrode printing pattern

Info

Publication number: CN219303675U
Application number: CN202320286834.8U
Authority: CN
Inventors: 张涛
Original assignee: Jiangsu Shenyang Photovoltaic Technology Co ltd
Current assignee: Jiangsu Shenyang Photovoltaic Technology Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-07-04
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses a novel battery positive electrode printed pattern, which comprises a main grid line, a thin grid line connected with the main grid line along the direction perpendicular to the main grid line, and an outer frame line connected with the end part of the thin grid line; the thin grid lines are gradually reduced along the width of the grid lines from outside to inside of the printed pattern, the printed pattern is divided according to the width of the grid lines of the thin grid lines, and different line width structures are used at different positions, so that the printing effect on the edge area of the battery piece is improved, the position printability and the ink permeability of different areas are improved, the printing yield and the printing efficiency are improved, the shading area of the battery piece is reduced, and the battery efficiency is improved.

Description

Novel battery piece positive electrode printing pattern

Technical Field

The utility model relates to the technical field of photovoltaic cells, in particular to a novel positive electrode printing pattern of a battery piece.

Background

Positive electrode screen printing plate is used for screen printing process in the production process of crystalline silicon batteries, positive electrode silver paste is printed, the sintered positive electrode screen printing plate has the functions of collecting current and leading out electrodes, a solar battery workshop uses positive electrode printing patterns, line widths of different area positions are consistent, line width design causes local position printing line differences during printing, lower cutter positions, cutter collecting positions and two sides of a vertical main grid are poor in printability, EL grid breakage is easily caused, accordingly yield and efficiency are reduced, and the whole contact area of a battery piece is increased, so that efficiency is lost.

Disclosure of Invention

The technical purpose is that: aiming at the defects that the line width of the printed patterns of the positive electrode of the existing battery piece is consistent, so that the printing type of the edge of the pattern is poor and the printing yield and efficiency are reduced, the utility model discloses a novel positive electrode printed pattern of the battery piece, which can improve the printing effect of the edge of the battery piece and the printing efficiency.

The technical scheme is as follows: in order to achieve the technical purpose, the utility model adopts the following technical scheme:

a novel battery positive electrode printed pattern comprises a main grid line, a thin grid line connected with the main grid line along the direction perpendicular to the main grid line, and an outer frame line connected with the end part of the thin grid line; the width of the fine grid line is gradually reduced along the printing pattern from outside to inside.

Preferably, the printed pattern is divided into a first grid line region positioned at the edge of the printed pattern according to the grid line width of the thin grid line, a second grid line region adjacent to the left side and the right side of the first grid line region, a central grid line region positioned at the center of the printed pattern and adjacent to the second grid line region at the left side and the right side, and a third grid line region surrounded by the first grid line region, the second grid line region and the central grid line region, wherein the grid line width is as follows in sequence from wide to narrow: the first gate line region, the second gate line region, the third gate line region and the central gate line region.

Preferably, the unit of the basic gate line width of the first gate line region is w, the unit is mu m, w is more than or equal to 12.4 mu m and less than or equal to 13 mu m, the gate line width of the second gate line region is w-0.5, the gate line width of the third gate line region is w-0.8, and the gate line width of the central gate line region is w-1.3.

Preferably, 10 gate lines of the first gate line region of the present utility model near the edge are increased by 1 μm compared to the width of the base gate line.

Preferably, the printed pattern of the present utility model adopts an axisymmetric structure in a direction perpendicular to the main gate line.

The beneficial effects are that: according to the utility model, the printed image is divided according to the grid line width of the fine grid line, different line width structures are used at different positions, so that the printing effect on the edge area of the battery piece is improved, the position printability and the ink permeability of different areas are improved, the printing yield and the printing efficiency are improved, the shading area of the battery piece is reduced, and the battery efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic diagram of the structure of a printed graphic of the present utility model;

wherein, 1-main grid line, 2-fine grid line, 3-outer frame line, 4-first grid line area, 5-second grid line area, 6-third grid line area, 7-central grid line area.

Detailed Description

The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the utility model are shown, but in which the utility model is not so limited.

The novel battery positive electrode printing pattern provided by the utility model comprises a main grid line 1, a thin grid line 2 connected with the main grid line 1 along the direction vertical to the main grid line 1, and an outer frame line 3 connected with the end part of the thin grid line 2, wherein the thin grid line 2 is a printed pattern; the width of the thin grid line 2 decreases from outside to inside along the printed pattern. Preferably, the printed pattern of the present utility model adopts an axisymmetric structure along the direction perpendicular to the main gate line 1.

The printing effect on the battery piece can be improved and the situations of EL broken grids and the like generated in the edge area can be reduced by changing the grid line widths corresponding to different positions of the printed patterns, specifically, the printed patterns can be divided into a first grid line area 4 positioned at the edge of the printed patterns according to the grid line widths of the thin grid lines, a second grid line area 5 adjacent to the left side area and the right side area of the first grid line area 4, a central grid line area 7 positioned at the center of the printed patterns and adjacent to the second grid line area 6 at the left side and the right side, and a third grid line area 6 surrounded by the first grid line area 4, the second grid line area 5 and the central grid line area 7, wherein the grid line widths are as follows: a first gate line region 4, a second gate line region 5, a third gate line region 6, and a central gate line region 7.

Preferably, in order to ensure the printing effect of each region, the width of the basic grid line of the first grid line region 4 is w, the width of the grid line of the second grid line region 5 is w-0.5, the width of the grid line of the third grid line region 6 is w-0.8, and the width of the grid line of the central grid line region 7 is w-1.3. In addition, compared with the width of the basic grid line, the width of 10 grid lines, close to the edge, of the first grid line region 4 can be increased by 1 mu m, and the printing uniformity of the edge region can be improved.

Through the printed pattern structure, the printability and the ink permeability of the corresponding area position of the battery piece can be improved, and meanwhile, the width of the grid line can be correspondingly adaptively adjusted according to the characteristics of the positive silver paste used, so that the efficiency of the battery piece is further improved.

The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.

Claims

1. The novel battery positive electrode printing pattern is characterized by comprising a main grid line (1), a thin grid line (2) connected with the main grid line (1) along the direction perpendicular to the main grid line (1), and an outer frame line (3) connected with the end part of the thin grid line (2);

the width of the fine grid line (2) decreases from outside to inside along the printed pattern.

2. The novel positive electrode printed pattern of the battery sheet according to claim 1, wherein the printed pattern is divided into a first grid line region (4) positioned at the edge of the printed pattern according to the grid line width of the thin grid line, a second grid line region (5) adjacent to the left side and the right side of the first grid line region (4), a central grid line region (7) positioned at the center of the printed pattern and adjacent to the second grid line region (5) at the left side and the right side, and a third grid line region (6) surrounded by the first grid line region (4), the second grid line region (5) and the central grid line region (7), wherein the grid line width is as follows in sequence from wide to narrow: the first grid line area (4), the second grid line area (5), the third grid line area (6) and the central grid line area (7).

3. The novel positive electrode printed pattern of the battery sheet according to claim 2, wherein the basic grid line width of the first grid line region (4) is w, w is more than or equal to 12.4 μm and less than or equal to 13 μm, the grid line width of the second grid line region (5) is w-0.5, the grid line width of the third grid line region (6) is w-0.8, and the grid line width of the central grid line region (7) is w-1.3.

4. A novel positive electrode printed pattern of a battery according to claim 3, characterized in that 10 lines of the first grid line region (4) near the edge are increased by 1 μm compared to the basic grid line width.

5. The novel positive electrode printed pattern of a battery sheet according to claim 1, wherein the printed pattern adopts an axisymmetric structure along a direction perpendicular to the main grid line (1).