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IBC photovoltaic battery module and welding process thereof

A technology of photovoltaic cells and components, applied in photovoltaic power generation, electrical components, circuits, etc., can solve the problems of high production cost, hidden cracks of cells, etc., and achieve improved service life, reduced hidden cracks, good mechanical properties and heat resistance Effect

Active Publication Date: 2021-05-07
锦州阳光能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an IBC photovoltaic cell assembly and its welding process, which is used to solve the problem that the existing battery sheets are connected by interconnecting strips. Most of the interconnecting strips are tinned copper strips, and the production cost is high. Sometimes it is easy to cause cracks in the battery sheet

Method used

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  • IBC photovoltaic battery module and welding process thereof
  • IBC photovoltaic battery module and welding process thereof
  • IBC photovoltaic battery module and welding process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The embodiment of the present invention provides an IBC photovoltaic cell assembly and its welding process, such as Figure 1-5 shown, including:

[0064] Cell 1;

[0065] an insulating resin layer 2, the insulating resin layer 2 is arranged on the back of the battery sheet 1;

[0066] A solder paste layer 3, the solder paste layer 3 is arranged on the surface of the insulating resin layer 2, the solder paste layer 3 is provided with several, and several of the solder paste layers 3 are arranged in a linear interval on the insulating resin layer 2 surface;

[0067] Copper foil strip 4, the copper foil strip 4 is arranged on the surface of the solder paste layer 3, the copper foil strip 4 is arranged in a long strip shape, and the copper foil strip 4 is connected to the same side solder paste layer 3 by welding connect;

[0068] A number of busbars 5 are arranged on the front of the battery sheet 1, the number of the 5 busbars is the same as the number of the 4 coppe...

Embodiment 2

[0073] On the basis of above-mentioned embodiment 1, as Figure 4 As shown, the left and right sides of the battery sheet 1 are provided with protection plates 6, and the protection plate 6 is provided with a first groove 7 facing the side of the battery sheet 1, and the left and right sides of the battery sheet 1 are located in the first recess. The groove 7 is slidingly connected with the first groove 7, and a bottom plate 8 is arranged under the battery sheet 1, and the left and right ends of the bottom plate 8 are fixedly connected to the bottom of the protection plate 6 on the left and right sides respectively.

[0074] The working principle and beneficial effects of the above technical solution are as follows: a protection plate 6 is provided on the left and right sides of the battery sheet 1, a first groove 7 is provided on the inside of the protection plate 6, and the battery sheet 1 can be slidably installed between the two protection plates 6 , the protection plate 6...

Embodiment 3

[0076] On the basis of Example 2, such as Figure 5 , Figure 6 As shown, the bottom surface of the bottom plate 8 is provided with a first connecting plate 9, and the lower end of the first connecting plate 9 is connected with a protection device, and the protection device includes:

[0077] A protective box 10, the protective box 10 is arranged below the bottom plate 8, a first bushing 11 is provided at the center of the upper end of the protective box 10, and a first spring 12 is slidably arranged in the first bushing 11, and the One end of the first spring 12 is fixedly connected to the upper surface of the protection box 10, and the other end of the first spring 12 is fixedly connected to one end of the second connecting plate 13, and the other end of the second connecting plate 13 extends to the first cover. The outside of the tube 11 is hingedly connected with the first connecting plate 9, the upper end of the protective box 10 is provided with a first through hole 14,...

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Abstract

The invention provides an IBC photovoltaic battery module and a welding process thereof. The IBC photovoltaic battery module comprises a battery piece, an insulating resin layer, a plurality of solder paste layers and copper foil strips, wherein the insulating resin layer is arranged on the back surface of the battery piece; the plurality of solder paste layers are arranged on the surface of the insulating resin layer, and the plurality of solder paste layers are linearly arranged on the surface of the insulating resin layer at intervals; and the copper foil strips are arranged on the surfaces of the solder paste layers, the copper foil strips are arranged to be in a long strip shape, and the copper foil strips are connected with the solder paste layers on the same side in a welding mode. In the invention, the insulating resin layer and the solder paste layers are arranged on the back surface of the battery piece, and the solder paste layers are connected and connected in series through the copper foil strips, so that an interconnection strip is replaced, and the cost is reduced. Meanwhile, the generation of hidden cracks of the IBC battery piece is reduced by utilizing the good mechanical property and heat resistance of the insulating resin layer, and the assembly performance is more excellent.

Description

technical field [0001] The invention relates to the technical field of photovoltaic cell components, in particular to an IBC photovoltaic cell component and its welding process. Background technique [0002] IBC photovoltaic modules generally refer to IBC solar cell modules. IBC solar cell modules are full-back electrode contact crystalline silicon solar cells. IBC cells appeared in the 1970s and were the earliest researched back-junction cells. They were originally mainly used in concentrating systems. IBC solar cell module is a technology that moves the positive and negative metal contacts to the back of the cell, so that the front of the cell facing the sun is completely black, and the metal wires on the front of most solar cells are completely invisible, which is not only for the user Bring greater power generation efficiency in the same area, and look more beautiful. [0003] At present, many photovoltaic module companies use interconnection strips to connect the cells...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05H01L31/18
CPCH01L31/0512H01L31/0516H01L31/1804H01L31/1876Y02P70/50Y02E10/547
Inventor 张海苏邱张雷李宝龙齐佳佳
Owner 锦州阳光能源有限公司
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