Multi-main-grid battery piece assembly and preparation process thereof

A preparation process and cell technology, applied in electrical components, sustainable manufacturing/processing, circuits, etc., can solve the problems of lower utilization of sunlight by photovoltaic cells, hindering cells from absorbing sunlight, and reducing photoelectric conversion efficiency, etc. Achieve the effect of avoiding light loss, improving mechanical properties and flame retardant properties, and promoting compatibility

Pending Publication Date: 2020-12-04
ECONESS ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Renewable energy is a clean energy that can be recycled and automatically regenerated without human participation. Among them, solar energy is widely used. The device that converts solar energy into electrical energy is called a photovoltaic cell. Photovoltaic cells include glass, battery sheets and backplanes. , the cells are welded by ribbons, and due to the nature of the ribbon itself, it will shield the sunlight and prevent the solar cells from absorbing sunlight, reducing the utilization of sunlight by photovoltaic cells and reducing the photoelectric conversion efficiency. , therefore, we propose a multi-busbar cell assembly and its fabrication process

Method used

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  • Multi-main-grid battery piece assembly and preparation process thereof
  • Multi-main-grid battery piece assembly and preparation process thereof
  • Multi-main-grid battery piece assembly and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take 60 groups of cells with the same color and the same efficiency and divide them into one group, and perform scribing on a dicing machine to make a multi-busbar half cell. The cell is a multi-busbar cell, and the cell assembly is a polycrystalline 12-bar components;

[0039] Take an oxygen-free copper strip and press it to make a copper base, then place it in a tin alloy in a molten state for 10 seconds to form a coating, take it out and attach it to an aluminum strip, and emboss it at a temperature of 150°C to form an embossed structure , to obtain a solder strip, wherein the tin alloy includes the following components by weight: 60 parts of tin, 36.5 parts of lead, 3.0 parts of silver, 0.5 part of copper, the oblique angle A of the copper-based cross-sectional triangle is 5.4°, and the triangular edge in the embossed structure The angle C between the hypotenuse of the platform and the coating is 30.5°;

[0040] Take polyphenylene ether and dissolve it in 1,2-dichl...

Embodiment 2

[0044] Take 60 groups of cells with the same color and the same efficiency and divide them into one group, and perform scribing on a dicing machine to make a multi-busbar half cell. The cell is a multi-busbar cell, and the cell assembly is a polycrystalline 12-bar components;

[0045] Take an oxygen-free copper strip and press it to obtain a copper base, then place it in a molten tin alloy for 35 seconds to form a coating, take it out and attach it to an aluminum strip, and emboss it at a temperature of 160°C to form an embossed structure , to obtain a solder strip, wherein the tin alloy includes the following weight components: 78 parts of tin, 18 parts of lead, 1.5 parts of silver, 0.2 part of copper, the oblique angle A of the copper-based cross-sectional triangle is 13.5°, and the triangular edges in the embossed structure The angle C between the hypotenuse of the platform and the coating is 36°;

[0046] Take polyphenylene ether and dissolve it in 1,2-dichloroethane, add...

Embodiment 3

[0050] Take 60 groups of cells with the same color and the same efficiency and divide them into one group, and perform scribing on a dicing machine to make a multi-busbar half cell. The cell is a multi-busbar cell, and the cell assembly is a polycrystalline 12-bar components;

[0051] Take an oxygen-free copper strip and press it to make a copper base, then place it in a molten tin alloy for 60 seconds to form a coating, take it out and attach it to an aluminum strip, and emboss it at a temperature of 170°C to form an embossed structure , to make a solder strip, wherein the tin alloy includes the following weight components: 96 parts of tin, 3.0 parts of silver, 0.5 part of copper, the oblique angle A of the copper-based cross-sectional triangle is 21.5°, and the hypotenuse of the triangular truss in the embossed structure The angle C with the coating is 41.6°;

[0052] Take polyphenylene ether and dissolve it in 1,2-dichloroethane, add 4-fluorobenzoyl chloride, anhydrous alu...

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Abstract

The invention discloses a multi-main-grid battery piece assembly and a preparation process thereof. The multi-main-grid battery piece assembly comprises glass, a multi-main-grid battery piece and a back plate, wherein the glass is arranged above the multi-main-grid battery piece, an anti-PID adhesive layer is arranged between the multi-main-grid battery piece and the glass, the back plate is arranged below the multi-main-grid battery piece, an EVA adhesive layer is arranged between the multi-main-grid battery piece and the back plate, the multi-main-grid battery piece comprises a plurality ofgroups of battery strings, two adjacent groups of battery strings are connected through a solder strip, and each battery string comprises a plurality of groups of half-piece batteries. The light source irradiated on the solder strip is reflected after angle deflection through the solder strip, so that the reflected light finally reaches the surface of the battery after multiple reflection of the glass, light receiving loss caused by shielding of the solder strip is avoided, absorption of the light source by the multi-main-grid battery piece assembly is increased, light loss is reduced, and theutilization rate of sunlight is increased; therefore, the battery assembly efficiency is improved, and wide popularization and application are facilitated.

Description

technical field [0001] The invention relates to the field of photovoltaic cells, in particular to a multi-busbar cell assembly and a preparation process thereof. Background technique [0002] Renewable energy is a clean energy that can be recycled and automatically regenerated without human participation. Among them, solar energy is widely used. The device that converts solar energy into electrical energy is called a photovoltaic cell. Photovoltaic cells include glass, battery sheets and backplanes. , the cells are welded by ribbons, and due to the nature of the ribbon itself, it will shield the sunlight and prevent the cells from absorbing sunlight, reducing the utilization rate of sunlight by photovoltaic cells and reducing the photoelectric conversion efficiency. , therefore, we propose a multi-busbar cell assembly and its preparation process. Contents of the invention [0003] The purpose of the present invention is to provide a multi-busbar cell assembly and its prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/054H01L31/05H01L31/0224H01L31/048H01L31/049H01L31/18
CPCH01L31/022425H01L31/048H01L31/0504H01L31/0508H01L31/1876H01L31/049H01L31/054Y02E10/52Y02P70/50
Inventor 赵卫东李向华朱广和秦艺华陈峰居仲豪
Owner ECONESS ENERGY
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