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Thinned crystalline silicon battery assembly

A crystalline silicon battery and thinning technology, applied in electrical components, circuits, photovoltaic power generation, etc., can solve the problems of battery conversion efficiency, battery module output power reduction, unfavorable high cost performance, etc., and achieve the effect of simple structure and improved output power

Pending Publication Date: 2021-11-12
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the current commercial battery technology scheme, the thinning of the battery sheet will cause the reduction of the battery conversion efficiency and the output power of the battery module, which is not conducive to the realization of high cost performance

Method used

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  • Thinned crystalline silicon battery assembly
  • Thinned crystalline silicon battery assembly
  • Thinned crystalline silicon battery assembly

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Embodiment Construction

[0017] Such as figure 2 Shown, a kind of thinning crystalline silicon cell assembly, described cell assembly comprises anti-reflection glass, EVA film, cell group, TPT film and aluminum frame, and described anti-reflection glass is arranged on EVA film, and EVA film is arranged Above the battery sheet group, the battery sheet group is arranged above the TPT film, and the anti-reflective glass, EVA film, battery sheet group, and TPT film are surrounded by an aluminum frame, wherein the top surface of the anti-reflective glass is lower than the top surface of the aluminum frame; The battery sheet group is composed of a plurality of thinned crystalline silicon batteries connected in series; the vertical section of the aluminum frame is L-shaped, wherein the length of the vertical part is 4 cm, the width is 1.1 cm, and the width of the horizontal part is 0.2 cm. The length of the horizontal part is 3 cm; the height of the top surface of the thickness of the anti-reflection glass ...

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Abstract

The invention discloses a thinned crystalline silicon battery assembly. Thebattery assembly comprises anti-reflection glass, an EVA film, a battery piece group, a TPT film and an aluminum frame. The anti-reflection glass is arranged above the EVA film, the EVA film is arranged above the battery piece group, the battery piece group is arranged above the TPT film, the anti-reflection glass, the EVA film, the battery piece group and the TPT film are surrounded by the aluminum frame, and the top surface of the anti-reflection glass is lower than the top surface of the aluminum frame; and the battery piece group is formed by connecting a plurality of thinned crystalline silicon batteries in series. The structure is simple, the output power is improved, and particularly, the effect of obviously improving the output power is achieved within the illumination incident angle range of 0-30 degrees. According to the invention, meaningful guidance is provided for thinning of the crystalline silicon battery in the future and power improvement of the thinned crystalline silicon battery assembly.

Description

technical field [0001] The invention relates to the battery field, in particular to a thinned crystalline silicon battery assembly. Background technique [0002] Crystalline silicon solar cells account for 95% of the global photovoltaic market due to their unique advantages such as rich reserves of raw materials in the earth's crust, non-toxicity, and high device stability. At present, the mainstream product in the crystalline silicon photovoltaic industry is PERC cells, and the typical thickness of silicon wafers used is about 180 microns. According to the forecast of the international photovoltaic technology roadmap, commercial crystalline silicon PERC cells will become thinner. In the next seven years, the thickness of crystalline silicon was gradually reduced to 150 microns. The benefit is to reduce the cost of the battery, because the cost of crystalline silicon materials accounts for as high as 65% of the cost of the battery. Corresponding to the application of phot...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/0216H01L31/0224H01L31/0236H01L31/0288H02S30/10
CPCH01L31/048H01L31/02167H01L31/02363H01L31/0288H01L31/022425H02S30/10Y02E10/50
Inventor 严文生臧月王宇吴秋轩
Owner HANGZHOU DIANZI UNIV