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Solar stacked wafer module employing central convergence grid line electrode

A laminated module and solar energy technology, which is applied in the field of solar cells, can solve the problems of high cost, large consumption of silver paste and conductive adhesive, etc., and achieve the effects of convenient operation, simple bonding and fixing methods, and improved light energy utilization

Active Publication Date: 2017-06-20
滁州隆基乐叶光伏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there are disadvantages of large consumption of silver paste and conductive adhesive and high cost.

Method used

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  • Solar stacked wafer module employing central convergence grid line electrode
  • Solar stacked wafer module employing central convergence grid line electrode
  • Solar stacked wafer module employing central convergence grid line electrode

Examples

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Embodiment Construction

[0050] like Figure 4 and Figure 5 As shown, the cell is divided into several sub-cells. The auxiliary grid lines on the front of each sub-cell are divided into several groups. On the front of the sub-battery, each group of sub-grid lines 9 converges toward the center to converge current to their respective main electrode points 10, and each main electrode point 10 is distributed along one long side of the sub-cell. In one-to-one correspondence with the main electrode points 10 on the front of the battery, the electrodes on the back of the battery also exist in the form of main electrode points 17 . For the same sub-battery, the main electrode points 10 on the front side and the main electrode points 17 on the back side are respectively distributed along two opposite long sides.

[0051] like Figure 6 and Figure 7 As shown, in the laminated assembly, the edges of adjacent sub-cells overlap, and the front main electrode point 10 of the first sub-cell 4 and the back main...

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Abstract

The invention provides a solar stacked wafer module employing a central convergence grid line electrode. The solar stacked wafer module comprises main electrode points and auxiliary grid lines which are arranged on a battery piece, wherein the auxiliary grid lines are scattering patterns taking the main electrode points as centers, and a current is converged to the main electrode points by a mode of converging towards the centers from periphery. By the solar stacked wafer module, the areas of main grid line electrodes on a front surface and a back surface of a solar cell are reduced, so that the consumption of silver paste and a conductive adhesive is reduced; and moreover, the numbers and the cross sections of the auxiliary grid lines are optimized, and the photoelectric conversion efficiency of the patterned stacked wafer battery piece is improved compared with a conventional stacked wafer battery piece with parallel auxiliary grid lines.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a solar laminate assembly using centrally converged grid line electrodes. Background technique [0002] A solar cell is a device that uses the photovoltaic effect to directly convert light energy into direct current. According to different photoelectric conversion materials, solar cells include monocrystalline silicon, polycrystalline silicon, amorphous silicon thin films, cadmium telluride thin films, copper indium gallium tin thin films, gallium arsenide, fuel sensitization, perovskite, stacked layers, etc. . The most common of these are crystalline silicon solar cells, including monocrystalline silicon solar cells and polycrystalline silicon solar cells. Solar cells are usually in the shape of a sheet. The side that absorbs light energy and converts it into electricity is called the light-absorbing side or front side, and the other side is called the back sid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/05H01L31/068
CPCH01L31/022433H01L31/022441H01L31/0508H01L31/0684Y02E10/547H01L31/0504
Inventor 郑直苗劲飞
Owner 滁州隆基乐叶光伏科技有限公司
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