Solar cell module and manufacturing method thereof
A solar cell module, solar cell technology, applied in electrical components, circuits, photovoltaic power generation and other directions, can solve problems such as short circuits
Active Publication Date: 2015-10-21
CSI CELLS CO LTD
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Problems solved by technology
[0003] If the back electric field is a positive electric field, in the manufacturing process of the back contact solar cell module, when the traditional electrical connection method is used to electrically connect adjacent cells in series, the electrical connection device connected to the negative electrode will inevitably be connected to the positive electrode. Electric field contact, thus causing a short circuit; if the back electric field is a negative electric field, when the traditional electrical connection method is used to electrically connect adjacent cells in series, the electrical connection device connected to the positive electrode will also inevitably contact the negative electric field, cause a short circuit
Method used
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Embodiment Construction
[0036] Hereinafter, the solar cell module of the present invention will be described in detail with reference to the accompanying drawings, taking Metallization Wrap Through (MWT) back contact solar cells as an example, but the application of the present invention is not limited to MWT back contact solar cells, which can also Other types of back-contact solar cells are used, such as metallization wrap-around (MWA) back-contact solar cells, or emitter-penetrating (Emitter Wrap Through, EWT) back-contact solar cells.
[0037] The solar cell module is used to absorb light energy and convert the light energy into electrical energy output. It can be a large-area cell module formed by a number of solar cells connected in series and then packaged and arranged in a square array. figure 1 Shown is the back side 11 of a solar cell 10 using metal penetration (MWT) technology. Solar cells are generally composed of two or more semiconductor slices, and the semiconductor material is usually sil...
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A solar cell module is provided, which includes a solar cell (10) with a first electrode and a second electrode (111) formed on one surface (11) of the solar cell, wherein the first electrode and the second electrode are separated from each other and the polarity of the second electrode is opposite to the polarity of the first electrode; an electric field arranged on the surface, wherein the polarity of the electric field is opposite to the polarity of the first electrode; a first conductive member (32), electrically connected to the first electrode; and an isolation layer (20), arranged between the surface of the solar cell and the first conductive member. Since an isolation layer is arranged between the back side of the solar cell and the first conductive member, a short circuit, caused by the contact of the first conductive member and the electric field at the back side of the solar cell, is avoided.
Description
Technical field [0001] The invention relates to a solar cell module and a manufacturing method thereof, in particular to a back contact solar cell module and a manufacturing method of a back contact solar cell module. Background technique [0002] Back-contact solar cell (or called back-electrode solar cell) refers to a silicon solar cell in which the positive and negative electrodes of the battery are both located on the back of the battery. Compared with traditional silicon solar cells, because the main grid lines are eliminated on the front of the cell, the shading loss is reduced, thereby increasing the effective lighting area and improving the efficiency of the cell. In addition, since the positive and negative electrodes of the battery are located on the back of the battery, the connection and packaging of the battery are facilitated, and the manufacturing process is simplified; and the number of bus bars on the front of the battery is reduced, making the battery look more ...
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IPC IPC(8): H01L31/0224H01L31/05H01L31/18
CPCH01L31/0516H01L31/022441Y02E10/50
Inventor 章灵军沈坚王栩生
Owner CSI CELLS CO LTD