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Wafer solar cell

A technology for solar cells and wafers, applied in circuits, electrical components, photovoltaic power generation, etc., to solve problems such as increased shadows, power loss of wafer solar cells, and increased consumption of screen printing pastes

Pending Publication Date: 2022-05-27
HANWHA Q CELLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this leads to increased shading and thus power loss of wafer solar cells and increased consumption of expensive screen printing pastes

Method used

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  • Wafer solar cell
  • Wafer solar cell

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Embodiment Construction

[0035] figure 1 A partial top view of a wafer solar cell according to the present invention is shown. The wafer solar cell has a solar cell surface 1 and a plurality of finger electrodes 2 . The finger electrodes 2 are arranged on the solar cell surface 1 and extend parallel to each other in the extension direction E along the solar cell surface 1 . Each finger electrode 2 has a width B perpendicular to the extension direction E, which width B is constant in different cases along the extension direction E, the corresponding width B of the finger electrodes 2 from the center of the solar cell surface 1 The area M begins to increase, viewed transversely to the extension direction E, towards the finger electrodes 2 in the edge area 11 of the solar cell surface 1 .

[0036] The central area M is an area occupying 10% of the width of the solar cell from the central point (not shown) of the solar cell surface 1 . Each edge area 11 is an area having a width of 10% of the width of ...

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Abstract

The invention relates to a wafer solar cell having a plurality of finger electrodes (2) arranged on the surface of the solar cell (1), which electrodes extend along the surface of the solar cell (1) in an extension direction (E) and have a width (B) perpendicular to the extension direction (E), wherein the width (B) of each finger electrode (2) increases from the width of the electrode in a central region (M) of the surface of the solar cell (1) viewed transversely to the extension direction (E) to the width of the finger electrode (2) in an edge region (11) of the surface of the solar cell (1).

Description

technical field [0001] The present invention relates to a wafer solar cell. In particular, the present invention relates to a wafer solar cell having a plurality of electrode fingers arranged on the surface of the solar cell, the electrodes extending in an extension direction along the surface of the solar cell and having a width perpendicular to the extension direction . Background technique [0002] Such finger electrodes are typically applied by screen printing methods to the solar cell surface in a predetermined layout such that they are typically disposed on and / or in another structure, such as a previously created laser contact opening or a wafer solar cell's Selective emitter. However, during the lifetime of the screen used, the screen printing process changes in its precision, especially in terms of layout displacement, extension, pivoting or combinations thereof in the sub-millimeter range. In the case of application of electrode fingers on the surface of the sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224
CPCH01L31/022433H01L31/022441H01L31/068Y02E10/50H01L31/02008
Inventor S·盖斯勒
Owner HANWHA Q CELLS