Screen printing plate capable of reducing cost and increasing efficiency
By designing a mesh including half-face graphics and steel wire, and using thin grid wire splicing to optimize the mesh parameters, the problem of difficult to reduce the wet weight of silver paste in the prior art is solved, and efficiency improvement and cost reduction are achieved.
Patent Information
- Application Number
- CN202421029647.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-13
AI Technical Summary
In the prior art, by adjusting the parameters such as wire diameter, yarn thickness, film thickness, etc. of the screen, it is difficult to further reduce the wet weight of the silver paste, resulting in increased efficiency losses and cost.
A mesh plate including half-face pattern and steel wire was designed. The half-face pattern was spliced by thin grid lines, which were located between two adjacent mesh knots on the steel wire. The parameters of the mesh plate were optimized to reduce the wet weight of silver paste.
Through this screen design, the wet weight of silver paste is reduced by 3mg, the efficiency advantage is increased, the screen life is extended, and the printing window and screen life are simultaneously increased, stabilizing the on-site process.
Smart Images
Figure CN222645573U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar photovoltaic manufacturing, and in particular to a screen capable of reducing costs and increasing efficiency. Background Art
[0002] At present, the most commonly used technology for printing crystalline silicon battery electrodes is screen printing, which is done through a screen. The screen generally includes a screen frame and a mesh stretched inside the screen frame. Conductive paste is poured on the screen, and a scraper is used to drive the conductive paste to move on the mesh, so that the conductive paste is squeezed through the mesh holes on the mesh onto the solar cell, forming a corresponding pattern on the solar cell to form the electrode of the solar cell. The production process of the screen and the design of the screen pattern have a great influence on the quality and cost of printing.
[0003] By just adjusting the parameters such as wire diameter / yarn thickness / film thickness / line width of the screen and keeping other auxiliary materials unchanged, it is difficult to further reduce the wet weight of the silver paste considering the efficiency loss issue. Utility Model Content
[0004] The purpose of the utility model is to provide a screen plate that can reduce costs and increase efficiency, so as to overcome the above-mentioned defects in the prior art.
[0005] A screen that can reduce costs and increase efficiency includes a half-surface pattern and a steel wire, wherein the half-surface pattern is provided with two and connected together, the steel wire is provided with a plurality of and connected in a mesh shape, each half-surface pattern is spliced by a plurality of fine grid lines, and the fine grid lines are located between two adjacent mesh knots on the steel wire.
[0006] Preferably, the number of the fine gate lines is 60-100.
[0007] Preferably, the line spacing of the fine grid lines is 0.9-1.2 mm.
[0008] Preferably, the length of the thin grid lines is 180-208 mm.
[0009] Preferably, the fine grid wire is located between two adjacent knots on the steel wire.
[0010] The utility model has the following advantages:
[0011] When the utility model is in use, the steel wires on both sides of the fine grid line are not extracted, and their position is basically located in the middle of two adjacent mesh knots. The synchronous screen parameters are 500 mesh count - (7-9) wire warp - (10-14) yarn thickness - (2-5) film thickness - (10-13) line width - 12 tension. The wet weight of the silver paste is reduced by 3mg, the efficiency advantage is increased, the screen life is increased, and the efficiency is improved. The printing window and the screen life are simultaneously enlarged, which is more conducive to the stability of the on-site process. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 Schematic diagram of the structure of traditional screen printing.
[0013] Figure 2 It is a structural schematic diagram of the front screen pattern of the utility model.
[0014] Figure 3 The utility model is a structural schematic diagram of screen production.
[0015] Among them: 1. Half-surface pattern, 2. Fine grid line, 3. Steel wire, 4. Net knot. DETAILED DESCRIPTION
[0016] The specific implementation methods of the utility model are further explained in detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model.
[0017] like Figure 1-3 As shown, the utility model provides a screen that can reduce costs and increase efficiency. The screen is designed to be used for battery cells of sizes of 182mm, 191mm, and 210mm, and includes a half-surface graphic 1 and a steel wire 3. The half-surface graphic 1 is provided with two and connected together, and the steel wire 3 is provided with a plurality of and connected in a mesh shape. Each half-surface graphic 1 is spliced by a plurality of fine grid lines 2, and the fine grid line 2 is located between two adjacent mesh knots 4 on the steel wire 3.
[0018] It should be noted that the number of the thin grid lines 2 is 60-100, the line spacing of the thin grid lines 2 is 0.9-1.2 mm, and the length of the thin grid lines 2 is 180-208 mm.
[0019] In addition, the steel wires 3 on both sides of the fine grid line 2 are not extracted, and their position is basically located between two adjacent mesh knots 4. The synchronous screen parameters are changed to 500 mesh - (7-9) wire warp - (10-14) yarn thickness - (2-5) film thickness - (10-13) line width - 12 tension, the wet weight of the silver paste is reduced by 3mg, the efficiency advantage is increased, the screen life is increased, and the efficiency is improved. The printing window and screen life are simultaneously enlarged, which is more conducive to the stability of the on-site process.
[0020] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.
Claims
1. A screen that can reduce costs and increase efficiency, characterized by: It comprises a half-surface pattern (1) and a steel wire (3), wherein the half-surface pattern (1) is provided with two and connected together, and the steel wire (3) is provided with a plurality of and connected in a mesh shape, and each half-surface pattern (1) is formed by splicing a plurality of fine grid lines (2), and the fine grid line (2) is located between two adjacent mesh knots (4) on the steel wire (3).
2. A screen plate capable of reducing costs and increasing efficiency according to claim 1, characterized in that: The number of the fine grid lines (2) is 60-100.
3. A screen plate capable of reducing costs and increasing efficiency according to claim 1, characterized in that: The line spacing of the fine grid lines (2) is 0.9-1.2 mm.
4. A screen plate capable of reducing costs and increasing efficiency according to claim 1, characterized in that: The length of the thin grid line (2) is 180-208 mm.
5. A screen plate capable of reducing costs and increasing efficiency according to claim 1, characterized in that: The fine grid wire (2) is located between two adjacent mesh knots (4) on the steel wire (3).