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solar cell

A technology for solar cells and back electrodes, applied in electrical components, circuits, photovoltaic power generation, etc., can solve problems such as increasing manufacturing costs, and achieve the effects of improving manufacturing yield, suppressing increase, and suppressing column bending

Inactive Publication Date: 2017-03-01
RESONAC CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the complicated steps of forming the alignment marks increase the manufacturing cost

Method used

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  • solar cell
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Embodiment Construction

[0036] Hereinafter, a solar cell unit according to the present invention and preferred embodiments for manufacturing the solar cell unit will be described in detail with reference to the accompanying drawings. The same elements are denoted by the same reference numerals, and repeated descriptions are omitted.

[0037] figure 1 is a plan view showing the light-receiving surface of the solar cell according to the first embodiment of the present invention. figure 2 is displayed figure 1 Bottom view of the back of the solar cell in . image 3 is displayed figure 1 A perspective view of multiple solar cells being connected together in . Figure 4 yes image 3 Schematic side view of .

[0038] Such as figure 1 As shown, the solar battery unit 100 is such that a plurality of solar battery units 100 are electrically connected in series or in parallel to form a solar battery module. The solar battery unit 100 includes a substrate 2 . The base plate 2 is substantially square a...

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Abstract

A solar battery cell comprises: a substrate; a plurality of finger electrodes formed on the light receiving surface of the substrate; and a back side electrode sufficiently covering the back side of the substrate and connected to the finger electrodes on an adjacent cell by bonding a first TAB wire through a conductive adhesive. The back side electrode has an omitted portion arranged so as to define at least one alignment mark indicating a position at which the first TAB wire is bonded, and the at least one alignment mark has a width smaller than the width of the first TAB wire.

Description

technical field [0001] The present invention relates to solar cells. Background technique [0002] In recent years, solar cells have been paid much attention as a means for solving the problems of increasing global warming and depletion of fossil energy. Solar cells are typically formed by connecting together a plurality of solar cell units in series or parallel. In order to supply electric power, a solar cell includes a plurality of linear electrodes (finger electrodes) arranged in parallel on its front surface (light-receiving surface) and formed of Ag. A back electrode formed of Al was formed over the entire back surface of the solar cell. Then, by connecting a metal wiring member (TAB wire) to the light-receiving surface of one of the adjacent solar battery cells so that the metal wiring member intersects all finger electrodes, and further connecting the TAB wire to The back electrode of another solar cell unit, so that adjacent solar cell units are connected together...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L23/544
CPCH01L23/544H01L31/0504H01L31/188H01L2223/54426H01L2223/54473H01L2924/0002Y02E10/50
Inventor 鹤冈恭生竹村贤三浅川雄介藤井正规
Owner RESONAC CORPORATION