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Photovoltaic cell assembly and method of manufacturing such a photovoltaic cell assembly

A photovoltaic cell and component technology, applied in photovoltaic power generation, electrical components, circuits, etc., can solve the problems of photovoltaic cell component efficiency and life reduction, cracks, and semiconductor substrates with reduced life

Inactive Publication Date: 2014-05-28
STICHTING ENERGIEONDERZOEK CENT NEDERLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the process of soldering the electrical wiring to the tracks on the substrate, the introduction of thermal stress may cause cracks to form in the bond, thus reducing life-to-failure and may also cause cracks to grow into the semiconductor substrate
[0004] When any solder joint fails, the overall efficiency of the PV module may decrease early in its life, resulting in low or no power output
Therefore, the efficiency and life of photovoltaic cell modules may be greatly reduced

Method used

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  • Photovoltaic cell assembly and method of manufacturing such a photovoltaic cell assembly
  • Photovoltaic cell assembly and method of manufacturing such a photovoltaic cell assembly
  • Photovoltaic cell assembly and method of manufacturing such a photovoltaic cell assembly

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Embodiment Construction

[0022] It should be noted that the drawings are only schematic diagrams of embodiments of the invention given by way of non-limiting examples. In the drawings, the same or corresponding elements are denoted by the same reference numerals.

[0023] Figure 1a A photovoltaic cell assembly 1 is shown comprising: a first and a second photovoltaic cell 2 , 3 each comprising a semiconductor substrate 4 with contact pads 5 printed thereon and a conductive connection strip 6 with lips 7 , 8 . Figure 1b A similar photovoltaic cell assembly 1 is shown with a plurality of contact pads 5 printed on each photovoltaic cell and a correspondingly larger number of lips 7 , 8 . The lips 7, 8 are attached to the contact pads 5 of the first and second photovoltaic cells 2, 3 by ultrasonic bonding, that is, the bonding need not involve soldering material, or more generally the contact pads 5 and connection strips 6 themselves. s material. In normal use, the connecting strip 6 is used to conduct...

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Abstract

A method a photovoltaic cell assembly comprising a first and second photovoltaic cell is manufactured using an electrically conducting connection strip having a first and second lip integrally formed in or extending from the connection strip, a width of the first and second lip being smaller than a width of the strip. The lips are preferably bonded to the contact pads on a side of the cell at which the connection strip is located. Ultrasonic bonding of the first and second lip to the contact pads of the first and second photo-voltaic cell respectively.

Description

technical field [0001] The invention relates to a photovoltaic cell assembly and a method for manufacturing the photovoltaic cell assembly. Background technique [0002] Known photovoltaic cells are based on semiconductor substrates such as silicon. One surface of the substrate is the photon collecting surface and the second surface opposite thereto is the backside. In a low-cost manufacturing process, conductor lines and contact pads (hereinafter collectively referred to as tracks) are printed or screen printed onto the surface of the substrate. In general, tracks are not printed directly onto the body of the substrate, but on a doped layer or region that is doped at a higher concentration than the body, and of the same or opposite polarity as the doping of the body. For example, tracks can be printed on the dielectric layer of this higher doped layer or region. The conductive tracks can be applied by printing a paste of aluminum particles. The paste can then be sintere...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05H01L31/18
CPCH01L31/0508Y02E10/50H01L31/0512
Inventor 伊恩·约翰·本内特
Owner STICHTING ENERGIEONDERZOEK CENT NEDERLAND