Photovoltaic weldable conductive band and application thereof

A conductive belt and photovoltaic technology, which is applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems of the conductive belt being opaque, reducing the power generation per unit area of ​​cells and modules, increasing the shading area of ​​cells, etc., to reduce the The effect of reducing the cost and positioning requirements of stringing equipment and increasing production capacity

Inactive Publication Date: 2020-02-21
CHANGZHOU SHICHUANG ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing conductive strips are not light-transmitting. After the conductive strip is connected to the front of the cell, the shading area of ​​the front of the cell will be increased, thereby reducing the power generation per unit area of ​​the cell and the module.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The present invention provides a weldable conductive belt for photovoltaics, which is grid-shaped and includes a conductive grid composed of conductive wires; the outer diameter of the conductive wire is 10-500um; the mesh aperture of the conductive grid is 5~500um;

[0021] The conductive wire is a metal wire, a metal wire with a metal layer on the surface, or a fiber with a metal layer on the surface; the fiber is a glass fiber or a carbon fiber; the metal wire can be an alloy wire;

[0022] The conductive grid can be woven from conductive filaments, and the conductive grid can also be prepared by an integral molding process.

[0023] The conductive tape of the present invention is grid-shaped, and there are many mesh holes in the conductive tape, and these meshes will not block the light, so compared with the existing light-proof conductive tape, the conductive tape of the present invention can reduce the light-shielding area, thereby improving battery performance. ...

Embodiment 2

[0025] The present invention also provides a series structure of solar battery slices, which includes two adjacent battery slices, and the two battery slices are connected in series through a conductive strip; the conductive strip extends from the front of one of the battery slices to the other battery The back side of the sheet; the conductive strip is the solderable conductive strip for photovoltaic use in Example 1.

[0026] The existing solar cell series structure can use the solderable conductive strip for photovoltaics in Embodiment 1. Since modules generally use a plurality of conductive strips, compared with the existing components using opaque conductive strips, the module with the series structure of Embodiment 2 can increase the power generation per unit area due to the application of grid-like conductive strips. improve.

Embodiment 3

[0028] On the basis of embodiment 2, the difference is:

[0029] The edges of the opposite ends of the two battery sheets are set up and down, and the edges of the two opposite ends of the battery sheets are aligned up and down;

[0030] The front side of the battery sheet whose opposite edge line is below is connected to the conductive strip;

[0031] The back side of the battery sheet whose opposite edge line is on the top is connected to the conductive strip;

[0032] The opposite ends of the cells whose opposite edge lines are above are supported by conductive strips and / or supporting structures provided in the solar cell module.

[0033] The vertical alignment of the edges of the opposite ends of two adjacent cells can maximize the density of cell laying in the horizontal direction.

[0034] It should be declared that although the edges of the opposite ends of two adjacent cells are aligned up and down in Example 3, if there is a slight deviation in the upper and lower ...

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PUM

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Abstract

The invention discloses a photovoltaic weldable conductive band, which is in a grid shape and comprises a conductive grid composed of conductive wires. The outer diameter of each conductive wire is 10-500 microns; and the grid aperture of the conductive grid is 5-500 microns. The conductive band is latticed and has a plurality of meshes, wherein the meshes cannot block light, so that compared withan existing lightproof conductive band, the provided conductive band can reduce the shading area and improve the generating capacity per unit area of a battery piece and an assembly. The invention also provides a battery piece series structure using the latticed conductive band. If the conductive band in the series structure is rectangular and spans each fine grid line, the positioning requirement for the conductive band can be greatly reduced in the series welding process, the cost of series welding equipment can be reduced, and meanwhile, the productivity of the series welding machine is improved.

Description

technical field [0001] The invention relates to the field of photovoltaics, in particular to a weldable conductive strip for photovoltaics and its application. Background technique [0002] Solar cell modules (also called solar panels, photovoltaic modules) are the core part of the solar power generation system. The solar battery module includes a battery string, and the battery string is composed of a plurality of solar battery slices laid in series in sequence. Two cells laid adjacent to each other are connected in series through a conductive tape (such as a photovoltaic ribbon), and the conductive tape is connected to the front of one of the cells and to the back of the other cell. [0003] However, the existing conductive strips are not light-transmitting. After the conductive strip is connected to the front of the cell, the shading area of ​​the front of the cell will be increased, thereby reducing the power generation per unit area of ​​the cell and the module. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05
CPCH01L31/0508H01L31/0512Y02E10/50
Inventor 常振宇吴凯符黎明
Owner CHANGZHOU SHICHUANG ENERGY CO LTD
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