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Photovoltaic module connection method

A photovoltaic module and connection method technology, which is applied in photovoltaic power generation, electrical components, semiconductor devices, etc., can solve problems affecting the appearance of modules, and achieve the effects of increasing module efficiency, reducing module cost, and reducing module size

Inactive Publication Date: 2014-09-17
LINUO PV HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] From the appearance point of view, the excessive use of bus bars affects the appearance of components

Method used

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  • Photovoltaic module connection method
  • Photovoltaic module connection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for connecting a photovoltaic module, the module includes battery slices in 8 rows and 6 columns. Refer to the accompanying drawings in the manual figure 2 ,3. The positive and negative terminals of the battery slices are located in the adjacent columns on both sides of half the width of the module, and are located at the top of the first row of the module. There is and only the battery piece’s outgoing terminal has a positive electrode terminal bus bar 3 and the bus bar 4 at the negative electrode outlet terminal are connected to the junction box. Starting from the positive cell at the outlet end, connect the positive and negative electrodes of the next cell in series with the welding ribbon 2 along the direction of the row or column, as shown in the attached manual. figure 2 , 3 As shown, the assembly includes 8 rows and 6 columns of cells connected in series. If the angle between the connection direction of three consecutive battery pieces is 90°, the w...

Embodiment 2

[0025] A method for connecting photovoltaic modules, the module includes 10 rows and 6 columns of cells. The positive and negative electrode outlets of the battery slices are located in the adjacent columns on both sides of half the width of the module, and are located at the top of the first row of the module. The electrode outlet terminal bus bar 4 is connected with the junction box. Starting from the positive cell at the outlet end, it is connected in series with the positive and negative electrodes of the welding ribbon 2 for the next cell along the row or column direction, and the assembly includes 10 rows and 6 columns of cells in series. If the angle between the connection direction of three consecutive battery pieces is 90°, the welding direction of the front electrode of the second battery piece and the welding strip of the back electrode is 90°, as shown in the accompanying drawing figure 2 , 3 Among them, the welding direction of the front electrode and the back ...

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Abstract

The invention relates to a photovoltaic module connection method. Positive electrode wire outgoing end battery pieces and negative electrode wire outgoing end battery pieces are two adjacent lines of battery pieces located in the middle of a module in the width direction. Bus bars are only located at the wire outing ends of the battery pieces at the top end of the first row of the module and are connected with a junction box. The positive electrode of each battery piece is connected with the negative electrode of the next battery piece in series through a solder strip in the direction of the row or the line from the wire outgoing end positive electrode battery pieces, and the negative electrode of each battery piece is connected with the positive electrode of the next battery piece in series through a solder strip in the direction of the row or the line from the wire outgoing end positive electrode battery pieces. If the included angle between the connecting directions of three adjacent battery pieces is 90 degrees, the welding direction the solder strip of the electrode on the front side of the second battery piece is perpendicular to the welding direction of the solder strip of the electrode on the back side of the second battery piece. Compared with a traditional connecting mode, the photovoltaic module connection method has the advantages that the number of adopted bus bars can be greatly reduced, material cost can be reduced, serial resistance of the module can be reduced, and the purpose of improving the efficiency of the module is achieved.

Description

technical field [0001] The invention relates to the field of photovoltaic modules, in particular to a method for connecting photovoltaic modules. Background technique [0002] Traditional crystalline silicon solar cell modules are formed by connecting cells in series with bus bars and welding ribbons. Take the price of a 60-piece 6-inch crystalline silicon solar cell as an example, such as figure 1 As shown, the length of the total bus bar exceeds 3m, and the series resistance will exceed 40mΩ, so that the electrical loss on the bus bar will exceed 1.6W. Considering the influence of solder joints on the series resistance, the electrical loss on the bus bar will far exceed 1.6 W. [0003] The use of multiple bus bars will not only significantly increase labor costs; moreover, there are bus bars leading out from the upper and lower ends of the module, which will correspondingly increase the consumption of glass, EVA, backplane, aluminum alloy and other materials. [0004] F...

Claims

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Application Information

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IPC IPC(8): H01L31/05
CPCY02E10/50H01L31/0508
Inventor 贾河顺姜言森刘兴村任现坤张春艳马继磊
Owner LINUO PV HIGH TECH
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