Interconnected grid line and manufacturing method, applicable solar cell and interconnect mode

A technology of solar cells and solar cells, which is applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as high cost, short circuit of cells, and reduction of battery output power, so as to save costs, reduce series resistance, and improve battery performance Effect

Pending Publication Date: 2019-01-25
SUZHOU SUNWELL NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the pressure is applied between the cells, this solution will easily cause the conductive glue 640 to overflow to the sides of the cells to form a parallel resistance and reduce the output power of the cells and even cause a short circuit of the cells, such as

Method used

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  • Interconnected grid line and manufacturing method, applicable solar cell and interconnect mode
  • Interconnected grid line and manufacturing method, applicable solar cell and interconnect mode
  • Interconnected grid line and manufacturing method, applicable solar cell and interconnect mode

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0032] Example 1

[0033] like figure 1 As shown in a, the left side is the schematic diagram of the cell, and the right side is the schematic diagram of the electroplating grid line structure after the interconnection area is enlarged.

[0034] In this embodiment, the electroplating grid line includes a metal grid wire frame 130 fabricated in the region where the solar cell sheets 110 are interconnected at the long edge border of the solar cell sheet 110 . It includes a main frame 131 parallel to the long side of the battery and connected to one end of the metal sub-grid electrode 120 on the battery, two horizontal sub-frames 132 and a vertical sub-frame 133 . The main frame 131 has a height of about 2-20 μm, preferably 5-12 μm, and a width of 12-300 μm, preferably 80-300 μm. The height of the three sub-frames 132 and 133 is about 2-20 μm, preferably 5-12 μm, and the width is 12-300 μm, preferably 12-45 μm here. The length of the lateral sub-frame 132 is about 0.5-3 mm, p...

Example Embodiment

[0038] Example 2

[0039] like figure 2 As shown, the left side is a schematic diagram of the cell, and the right side is a schematic diagram of the electroplating grid line structure after the interconnection area is enlarged.

[0040] In this embodiment, the electroplating grid line includes a metal grid line frame 230 fabricated in the region where the solar cell sheets 210 are interconnected at the long side boundary of the solar cell sheet 210 .

[0041] In this embodiment, the main frame 231 and the secondary frame 232 have the same width, preferably 80-200 μm, and the frame height is about 2-20 μm, preferably 5-12 μm. The length of the lateral sub-frame 132 is about 0.5-3 mm, preferably about 1 mm. The beneficial effect of adopting a wider sub-frame is that charge transfer is carried out through the surrounding frame, not only through the main frame and the conductive adhesive, the series resistance is reduced, and the metal grid wire frame 230 still has a better fun...

Example Embodiment

[0044] Example 3

[0045] like image 3 As shown, the left side is a schematic diagram of the cell, and the right side is a schematic diagram of the electroplating grid line structure after the interconnection area is enlarged.

[0046] In this embodiment, the electroplating grid line includes a metal grid line frame 330 fabricated in the region where the solar cell sheets 310 are interconnected at the long side boundary of the solar cell sheet 310 .

[0047] In this embodiment, the width of the sub-frame 332 is 12-300 μm, preferably 12-45 μm, and the height is about 2-20 μm, preferably 5-12 μm. The main frame 331 is a grid-shaped fine grid, and the width of each thin grid line is preferably about 15-45 μm. Using the grid-like fine grid as the main frame 331 can reduce the maximum width of the plated grid lines and ensure that the plated grid lines have sufficient adhesion.

[0048] In this embodiment, the metal grid wire frame 330 also has a pattern structure metal layer 3...

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Abstract

The invention discloses an interconnecedt gate line and a manufacturin method which are Applicable solar cells and interconnected modes, the method includes a metal grid frame disposed between regionswhere two adjacent battery sheets are stacked with respect to each other, The metal grid wire frame comprises a main frame vertically connected with the parallel battery sheet metal sub-grid electrodes, a longitudinal sub-frame parallel to the main frame and not connected with the battery sheet sub-grid, and a transverse sub-frame connected with the main frame and the longitudinal sub-frame on both sides. Then, the front surface of one solar cell sheet and the back surface of the other solar cell sheet are connected through a conductive adhesive filled in a rectangular frame formed by metal grid lines to form an interconnected solar cell. The fabricated metal grid frame has certain blocking effect on the conductive adhesive, and can prevent or reduce the conductive adhesive from overflowing when the battery sheet is overlapped, thereby avoiding the short circuit of the battery sheet caused by the formation of the series resistance.

Description

technical field [0001] The invention belongs to the field of solar energy manufacturing, and in particular relates to an interconnect grid line and a manufacturing method, a suitable solar cell and an interconnection method. Background technique [0002] In recent years, photovoltaic new energy has occupied an increasingly important position in the world's energy structure, which is largely due to its role in environmental protection and has gradually developed under the policy support of various governments. However, if you want to make photovoltaic new energy sufficiently competitive in a free market environment, and even achieve an equal share with traditional fossil energy in terms of energy structure, you still need the continuous efforts of major photovoltaic companies and research institutions to increase the efficiency of photovoltaic power generation Reduce power generation costs. The research and development of both photovoltaic module technology and photovoltaic ...

Claims

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Application Information

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IPC IPC(8): H01L31/0224H01L31/05
CPCH01L31/022433H01L31/05Y02E10/50
Inventor 李中天姚宇邓晓帆
Owner SUZHOU SUNWELL NEW ENERGY CO LTD
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