Metal alloy series-connected imbricated photovoltaic module cell string and preparation method thereof

A technology of metal alloys and photovoltaic modules, which is applied in the field of photovoltaic modules and its preparation, can solve problems such as fire, aging resistance, and resistance heating, and achieve the effects of accelerating molecular thermal movement, reducing failure probability, and reducing the light-receiving area

Pending Publication Date: 2021-05-28
SERAPHIM SOLAR SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a series connection of metal alloy shingled photovoltaic module battery strings, which can be connected in series through metal alloys,

Method used

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  • Metal alloy series-connected imbricated photovoltaic module cell string and preparation method thereof
  • Metal alloy series-connected imbricated photovoltaic module cell string and preparation method thereof
  • Metal alloy series-connected imbricated photovoltaic module cell string and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] See Figure 3 to Figure 6 , the shingled photovoltaic module battery string connected in series by metal alloys in the present invention has six battery sheets 1; the front of each battery sheet 1 is provided with a front electrode, and the back of each battery sheet 1 is provided with a back electrode; the front The electrodes include a front fine grid electrode 2, a front main grid electrode 3 and a front side main grid electrode 4, wherein the front fine grid electrode 2 is connected to the front main grid electrode 3, and the front main grid electrode 3 is connected to the front side main grid electrode 4. connection; the back electrode includes the back main grid electrode 5, the back electric field 6 and the back side main grid electrode 7, and the back main grid electrode 5 is connected to the back side main grid electrode 7; The gate electrode 4 and the main gate electrode 7 on the back side of the next cell 1 are partially stacked and connected together by the ...

Embodiment 2

[0076] The components of the slurry for printing the front side busbar electrode 4 in step S8 of the present invention are: 80% ultra-fine silver powder, 3% glass phase, 15% acrylic polymer, 1.5% thickener, and 0.4% thixotropic agent , Defoamer 0.1%. Among them, ultrafine silver powder is used as the conductive functional phase.

[0077] Other technical characteristics are identical with embodiment 1.

Embodiment 3

[0079] In the present invention, before step S9, the back side busbar electrode 7 is not printed, and the front side busbar electrode 4 of the previous cell 1 is partially stacked with the back electrode of the next cell 1 to form a series connection.

[0080] Other technical characteristics are identical with embodiment 1.

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Abstract

The invention relates to a metal alloy series-connected imbricated photovoltaic module battery string and a preparation method thereof. The imbricated photovoltaic module battery string is provided with a plurality of battery pieces; the front surface of each battery piece is provided with a front surface electrode, and the back surface of each battery piece is provided with a back surface electrode; the front surface electrode comprises a front fine gate electrode, a front main gate electrode and a front side main gate electrode, the front fine gate electrode is connected with the front main gate electrode, and the front main gate electrode is connected with the front side main gate electrode; and the main gate electrode on the front side of the previous cell and the electrode on the back side of the next cell are partially stacked and are connected together at the stacking part through the molten and solidified metal alloy to form series connection. According to the invention, the metal alloy is used for replacing traditional conductive adhesive, so that the problems of aging and resistance increase caused by long-term operation can be effectively solved, and meanwhile, the problem of fire caused by resistor heating can also be effectively solved.

Description

technical field [0001] The invention relates to a photovoltaic module and a preparation process thereof, in particular to a metal alloy series-connected shingled photovoltaic module battery string and a preparation method. Background technique [0002] Shingled photovoltaic modules emerged in response to the market's demand for products with high output power density. With their unique structural arrangement, they make full use of the gaps between series-connected cells and can achieve an output power gain of 6% for a single photovoltaic module. In the case of crystalline silicon raw materials, battery technology, and module packaging technology have gradually reached the "technical ceiling", an output power gain of 6% is no different from a technological progress, and this kind of process improvement does not require complicated battery structure design and large-scale The introduction of advanced equipment only requires a little technical improvement on the traditional bat...

Claims

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Application Information

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IPC IPC(8): H01L31/0224H01L31/05H01L31/18
CPCH01L31/022433H01L31/0508H01L31/188Y02E10/50Y02P70/50
Inventor 丁晓春郭晓珍黄斌
Owner SERAPHIM SOLAR SYST
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