Photovoltaic module string arrangement and shading protection therefor

A technology for solar cells and equipment, applied in photovoltaic modules, photovoltaic power generation, energy conversion devices, etc., can solve problems such as power loss, and achieve the effect of eliminating needs, reducing complexity and cost, and efficiently shielding and protecting

Inactive Publication Date: 2012-05-02
DAY4 ENERGY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if these 60 cells are arranged in 10 strings, the shading of one cell will result in a power loss of only 10%

Method used

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  • Photovoltaic module string arrangement and shading protection therefor
  • Photovoltaic module string arrangement and shading protection therefor
  • Photovoltaic module string arrangement and shading protection therefor

Examples

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Embodiment Construction

[0053] refer to figure 1, a solar panel installation according to a first embodiment of the present invention is shown generally at 10 . Device 10 includes a transparent sheet substrate 12 having a front plane 14 and a rear plane 16 and a perimeter edge 18 extending completely around the perimeter of substrate 12 .

[0054] The device 10 also includes a plurality of solar cells 22 arranged in a planar array on the rear plane 16 such that light operable to activate the solar cells 22 may enter the front face 14 of the substrate and pass through the substrate 12 to activate the solar cells 22, And such that the perimeter void 24 is formed on the rear plane 16 of the substrate 12 adjacent to the perimeter edge 18 .

[0055] Device 10 also includes a plurality of electrical conductors 26 arranged generally end-to-end within perimeter void 24 .

[0056] The device 10 also includes a plurality of electrodes 28 that electrically connect the solar cells 22 together into a plurality ...

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PUM

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Abstract

A method and apparatus for protecting a string of solar cells from shading in a solar panel having a plurality of strings of solar cells are described. Electric current is shunted around any string of the solar cells having at least one shaded solar cell by shunting the electric current through electrical conductors and a bypass diode located in a perimeter margin of a substrate supporting the solar cells such that no matter which string has a shaded solar cell current through the string with the shaded solar cell is shunted through electrical conductors and a respective bypass diode located in the perimeter margin. This distributes dissipation of heat from respective bypass diodes that are associated with strings having at least one shaded solar cell, to different locations around the perimeter margin.

Description

technical field [0001] The present invention relates to photovoltaic (PV) modules and, more particularly, to configuring PV cells to allow for an increase in the number of PV strings and to provide shading protection for the strings with bypass diodes located within the PV module. Background technique [0002] The design and manufacture of PV modules comprising crystalline silicon PV cells has remained almost unchanged for more than three decades. A typical PV cell includes a semiconductor material having at least one p-n junction and frontside and backside surfaces with collector electrodes. When irradiating a conventional crystalline PV cell, it generates about 34mA / cm at about 0.6V-0.62V 2 current. Multiple PV cells are typically electrically interconnected in series and / or parallel PV strings to form a PV module that produces higher voltage and / or current than a single PV cell. [0003] PV cells can be interconnected in strings by means of metal tabs made, for example...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/142H01L31/042H01L31/05H02S40/36
CPCH01L31/042Y02E10/50H01L31/05H01L31/048H01L31/0504
Inventor 利奥尼德·鲁宾瓦莱丽·M·内布索夫法里博尔兹·法里·奥尔杜巴迪
Owner DAY4 ENERGY INC
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