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Solar battery and method for splicing solar battery fragments

A technology for solar cells and fragments, applied in the field of solar cells, can solve the problems of unutilized battery fragments, smaller battery area, smaller current, etc., and achieve the effects of improving utilization rate, reducing series resistance and avoiding waste.

Inactive Publication Date: 2013-01-09
张陆成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One disadvantage of this method is that the small battery area obtained after cutting becomes smaller, and the current becomes smaller after being connected in series to make modules. Another disadvantage is that those irregular battery fragments cannot be used, resulting in waste

Method used

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  • Solar battery and method for splicing solar battery fragments
  • Solar battery and method for splicing solar battery fragments
  • Solar battery and method for splicing solar battery fragments

Examples

Experimental program
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Effect test

example 1

[0109] Electrical interconnection mode 1, that is, the transmission area or the base area connection, the following only uses the transmission area connection as an example for illustration. Such as Figure 3-1 As shown, the emission area connection is to use the material used as the emission area connection wire 13 and the emission area wire bridge connection point 14, and through a suitable process, the two sides of the emission area that are electrically isolated due to cracks or fractures will be electrically connected again, so that the current From the emission area on one side of the crack to the emission area on the other side of the crack through the wire. The connecting wire 13 in the emitter area can be made of metals such as silver, copper, tin, or an alloy of silver, copper, tin, or other metals, or a wire coated with these metals or alloys. In the present invention, the connecting wire 13 in the emission area only needs to be a conductive wire. The connection p...

example 2

[0111] Electrical interconnection mode 2, that is, the connection of the front electrode line: the emission area that is electrically isolated by the crack or the fracture can also be connected to the front electrodes on both sides of the crack or the fracture to re-realize the electrical interconnection of the emission areas on both sides. This crack repair method is called front electrode wire connection. Such as Figure 3-2 As shown, cracks or cracks can cause the interruption of the current path in the front electrode finger grid 7 and the front electrode main grid 8, and the front electrode connection line 15 is placed on the surface of the front electrode finger grid 7 and the front electrode main grid 8, and then The two ends of the front electrode connection line 15 are welded together with the front electrode by means of hot pressing, laser or ultrasonic waves to form the connection point 16 of the front electrode line. After repairing this process, the passage of the...

example 3

[0113] Electrical interconnection method 3, that is, the local network connection of the front electrode: use a metal mesh with the same area and shape as the crack in the plane direction of the solar cell to cover the area with cracks or fractures, make the metal mesh contact with the front electrode, and then use hot pressing , laser or ultrasonic and other welding methods, so that the metal mesh and the front electrode finger grid 7 and the front electrode main grid 8 form a good electrical contact, thereby eliminating the impact of cracks or cracks on the front electrode of the solar cell. The material of the partial net can be metals such as silver, copper, tin, etc., or an alloy of silver, copper, tin, or other metals, or a material coated with these metals or alloys on the periphery. The spacing between the parallel mesh stripes can be the same as that of the front electrode finger grid 7 of the solar cell to be repaired, or it can be different. Such as Figure 3-3 , p...

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Abstract

The invention provides a solar battery and a method for splicing solar battery fragments. According to one aspect of the invention, the invention provides a solar battery which is formed by splicing a plurality of solar battery fragments, wherein each solar battery fragment comprises a positive electrode, a photoelectric active region and a negative electrode; the solar battery is characterized by further comprising a front side which is a light receiving side for receiving light, a back side which is the other side opposite to the front side, joint seams which are arranged between a plurality of solar battery fragments, and electrical inter-linkers which are arranged on the front side and / or back side and are used for electrically linking the parts at two sides of the joint seams.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a solar cell and a method for splicing solar cell fragments. Background technique [0002] Solar cells (also known as solar cells) are semiconductor devices that convert solar energy into electrical energy. At present, crystalline silicon solar cells including monocrystalline silicon solar cells and polycrystalline silicon solar cells account for more than 90% of current solar cell production. In terms of the electrode structure of solar cells, there are metal-wrapped solar cells (MWT) with electrodes on both sides, emitter-wrapped (EWT) solar cells, HIT solar cells, and traditional screen-printed electrodes that currently account for the majority of the market. Solar cells, there are also full-back electrode solar cells, and double-sided cells that can receive light on the front and back, and so on. [0003] For the sake of simplicity and without loss of generality, the fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05H01L31/042H01L31/18
CPCY02E10/50Y02P70/50
Inventor 张陆成
Owner 张陆成
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