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Photovoltaic cell module and preparation methods thereof

A photovoltaic cell and module technology, applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems of large spacing, space waste, and inability to effectively use the space between photovoltaic cells, so as to increase the light-receiving area and avoid space waste , The effect of improving power generation efficiency

Inactive Publication Date: 2019-02-05
HANGZHOU JOY ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a photovoltaic cell module and its preparation method, which solves the problem that there is a large distance between the photovoltaic cells connected in series in the prior art, resulting in waste of space and the inability to effectively utilize the spacing area of ​​the photovoltaic cells problem, so as to realize gapless series connection between photovoltaic cells

Method used

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  • Photovoltaic cell module and preparation methods thereof
  • Photovoltaic cell module and preparation methods thereof
  • Photovoltaic cell module and preparation methods thereof

Examples

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preparation example Construction

[0048] According to another aspect of the present invention, the present invention further provides a method for preparing a first photovoltaic cell module. The preparation method of the photovoltaic cell module comprises the following steps:

[0049] A. Arrange multiple sets of front interconnection conductive strips 30 at equal intervals on the platform;

[0050] B. Place a photovoltaic cell unit 10 on each group of front interconnected conductive strips 30 and place a photovoltaic cell unit 10 on each photovoltaic cell unit 10 in turn in the order of a photovoltaic cell unit 10 and a group of reverse interconnected conductive strips 20 A set of back-side interconnected conductive strips 20, so that the front electrodes of each photovoltaic cell unit 10 are aligned one by one and cover each front-side interconnected conductive strip 30 of the same group, and one end of the front-side interconnected conductive strip 30 does not exceed the photovoltaic cell The edge of the sh...

Embodiment 1

[0077] Example 1: Single-polycrystalline single-sided or double-sided battery + triangular ribbon + horizontal version

[0078] 1. Preparation of the photovoltaic cell unit 10: a single-crystal or polycrystalline P-type single-sided or double-sided power generation cell is cut in half from a standard-sized photovoltaic cell of 156.75*156.75 in half. There are 7 front electrodes with a width of 0.3mm, the distance between the front electrodes is 22.1mm, and the back electrodes are divided into two sections.

[0079]2. Preparation of the front interconnection conductive strip 30 and the reverse interconnection conductive strip 20: use an ultra-thin tinned copper flat strip of 0.08mm*2mm as the reverse interconnection conductive strip 20, and the thickness of the tinned layer on one side of the tinned copper flat strip is 0.015mm. A tinned triangular solder strip is used as the front interconnection conductive strip, the side length of the cross section is 0.5mm, and the thickne...

Embodiment 2

[0083] Example 2: Single-polycrystalline single-sided or double-sided battery + triangular ribbon + vertical version

[0084] 1. Preparation of the photovoltaic cell unit 10: the monocrystalline or polycrystalline P-type single-sided or double-sided power generation cell is cut in half from a standard-sized photovoltaic cell of 156.75mm*156.75mm in half. There are 7 front electrodes with a width of 0.3mm, the distance between the front electrodes is 22.1mm, and the back electrodes are divided into two sections.

[0085] 2. Preparation of the front interconnection conductive strip 30 and the reverse interconnection conductive strip 20: use an ultra-thin tinned copper flat strip of 0.08mm*2mm as the reverse interconnection conductive strip 20, and the thickness of the tinned layer on one side of the tinned copper flat strip is 0.015mm. A tinned triangular solder strip is used as the front interconnection conductive strip, the side length of the cross section is 0.5mm, and the t...

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Abstract

The invention provides a photovoltaic cell module and preparation methods thereof. The photovoltaic cell module includes multiple photovoltaic cell units, multiple sets of reverse interconnected conductive strips and multiple sets of front interconnected conductive strips. The reverse interconnected conductive strips are ultra-thin and ultra-soft materials; the two ends of each reverse interconnected conductive strip are in overlapped joint with two adjacent photovoltaic cell units; each reverse interconnected conductive strip of the same set correspondingly covers the reverse electrode of thesame photovoltaic cell unit and extends to overlap with the front electrode of the adjacent other photovoltaic cell unit; and one end of each front interconnected conductive strip does not exceed theedge of the corresponding photovoltaic cell unit and communicates with the reverse interconnected conductive strip overlapped with the same front electrode, and the space between two adjacent photovoltaic cell units is less than or equal to 0.5 mm. Thus, the space between the photovoltaic cell units can be reduced, series connection without spacing can be realized, the space areas of the photovoltaic cell units can be effectively utilized, and therefore, light receiving areas can be equivalently increased, and power generation efficiency can be enhanced.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a photovoltaic cell module and a preparation method thereof. Background technique [0002] Photovoltaic cells can be divided into single-sided power generation cells and double-sided power generation cells according to the technical process. Both the front and back (also called A-side and B-side) of a single-sided power generation cell have electrode structures, usually called front electrodes and back electrodes (also called A-side electrodes and B-side electrodes). The front electrode includes two functional parts, which are thin grid lines and front bus electrodes (also called wide grid lines). The fine grid lines are used to collect photo-generated current, and the collected photo-generated current is collected on the front bus electrode and then exported. The back electrode includes a back electric field and a back bus electrode, the back electric field is used for p...

Claims

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Application Information

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IPC IPC(8): H01L31/05H01L31/18
CPCH01L31/0504H01L31/0512H01L31/18Y02E10/50Y02P70/50
Inventor 武宇涛
Owner HANGZHOU JOY ENERGY TECH CO LTD
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