CN202957257U - Solar cell and backside electrode structure thereof - Google Patents

Solar cell and backside electrode structure thereof Download PDF

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Publication number
CN202957257U
CN202957257U CN 201220586104 CN201220586104U CN202957257U CN 202957257 U CN202957257 U CN 202957257U CN 201220586104 CN201220586104 CN 201220586104 CN 201220586104 U CN201220586104 U CN 201220586104U CN 202957257 U CN202957257 U CN 202957257U
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CN
China
Prior art keywords
solar cell
electrode structure
back face
backside
cell back
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220586104
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Chinese (zh)
Inventor
蔡希松
胡琴
张飞
季九江
李望兵
张慧琴
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Changzhou EGing Photovoltaic Technology Co Ltd
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Changzhou EGing Photovoltaic Technology Co Ltd
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Priority to CN 201220586104 priority Critical patent/CN202957257U/en
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Abstract

The utility model relates to an electrode structure of a solar cell, especially to the solar cell and a backside electrode structure thereof. The solar cell comprises a silicon wafer, wherein the backside of the silicon wafer is equipped with three parallel backside electrodes, the distance d1 between two backside electrodes is 52mm, and each backside electrode is composed of multiple segment electrodes in a same line. According to the utility model, a continuous strip-shaped electrode in the backside of the solar cell is divided into multiple independent segment electrodes, thereby reducing consumption of silver slurry in the production process, saving the cost, improving conversion efficiency of the cell, and satisfying welding requirements of assemblies.

Description

Solar cell back face electrode structure and the solar battery sheet with this structure
Technical field
The utility model relates to the electrode of solar battery structure, the solar battery sheet that relates in particular to a kind of solar cell back face electrode structure and have this structure.
Background technology
Solar panel is the core in solar power system, is also to be worth the highest part in solar power system.Its effect is to convert solar energy into electrical energy, or is sent in storage battery and stores, or promotes loaded work piece.
Solar panel is generally formed by the solar battery sheet encapsulation, and the electrode of existing solar cell back face mainly is continuous strip, relatively waste is used to form the printing auxiliary material silver slurry of backplate, and the high battery conversion efficiency of cost is low, also is not easy to the location of assembly automatic welding.
The utility model content
The technical problems to be solved in the utility model is: in order to solve, in prior art, the silver slurry consumes greatly, cost is high, battery conversion efficiency is low, the technical problem of inconvenient automatic welding, the solar battery sheet that the utility model provides a kind of solar cell back face electrode structure and has this structure.
The utility model solves the technical scheme that its technical problem adopts: a kind of solar cell back face electrode structure, comprise silicon chip, the back side of described silicon chip is provided with three parallel backplates, spacing d1 between every backplate is 52mm, and by multistage, the segmented electrode on same straight line forms every backplate.
Further, preferred, described every backplate is comprised of 5 sections segmented electrodes on same straight line.
Further, particularly, the entire length of described each segmented electrode is 15.5~20.5mm, and width is 2~4mm.
Further, particularly, the edge of described each segmented electrode is evenly distributed with the feeler of giving birth to extension.
Further, particularly, the length of described feeler is 0.25~0.5mm, and width is 0.25~0.5mm, and the spacing d2 between each feeler is 0.25~0.5mm.
Further, preferred, described silicon chip is monocrystalline silicon piece or the polysilicon chip that length and width are 156mm.
A kind of solar battery sheet, the back side of described solar battery sheet is above-mentioned solar cell back face electrode structure.
The beneficial effects of the utility model are, solar cell back face electrode structure of the present utility model, by existing solar cell back face, the electrode of continuous strip is divided into a plurality of independently segmented electrodes, reduced the consumption of silver slurry in the production process, saved cost, improve battery conversion efficiency low, met the welding requirements of assembly.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of the optimum embodiment of the utility model.
Fig. 2 is the enlarged diagram of segmented electrode in Fig. 1.
In figure 1, silicon chip, 2, backplate, 2-1, segmented electrode, 2-1-1, feeler.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
As Fig. 1, shown in Fig. 2, the utility model embodiment 1, take the mm of 156*156(unit) monocrystalline silicon piece 1 be example, the back side of described silicon chip 1 is provided with three parallel backplates 2, spacing d1 between every backplate 2 is 52mm, every backplate 2 by 5 sections independently the segmented electrode 2-1 on same straight line form, the integral body of each segmented electrode 2-1 (comprising antennule) length is 15.5mm, width is 3mm, the edge of each segmented electrode 2-1 is evenly distributed with the feeler 2-1-1 given birth to extension, the length of feeler 2-1-1 is 0.5mm, width is 0.25mm, spacing d2 between each feeler 2-1-1 is 0.5mm.
A kind of solar battery sheet, the back side of described solar battery sheet is provided with the back electrode structure of solar battery sheet in the present embodiment 1.
The utility model embodiment 2, take the mm of 156*156(unit) monocrystalline silicon piece 1 be example, the back side of described silicon chip 1 is provided with three parallel backplates 2, spacing d1 between every backplate 2 is 52mm, every backplate 2 by 5 sections independently the segmented electrode 2-1 on same straight line form, the integral body of each segmented electrode 2-1 (comprising antennule) length is 20mm, width is 4mm, the edge of each segmented electrode 2-1 is evenly distributed with the feeler 2-1-1 given birth to extension, the length of feeler 2-1-1 is 0.25mm, width is 0.5mm, spacing d2 between each feeler 2-1-1 is 0.4mm.
A kind of solar battery sheet, the back side of described solar battery sheet is provided with the back electrode structure of solar battery sheet in the present embodiment 2.
The above-mentioned foundation desirable embodiment of the present utility model of take is enlightenment, and by above-mentioned description, the relevant staff can, in the scope that does not depart from this utility model technological thought, carry out various change and modification fully.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to the claim scope.

Claims (7)

1. a solar cell back face electrode structure, comprise silicon chip (1), it is characterized in that: the back side of described silicon chip (1) is provided with three parallel backplates (2), spacing d1 between every backplate (2) is 52mm, and by multistage, the segmented electrode on same straight line (2-1) forms every backplate (2).
2. solar cell back face electrode structure as claimed in claim 1, it is characterized in that: by 5 sections, the segmented electrode (2-1) on same straight line forms described every backplate (2).
3. solar cell back face electrode structure as claimed in claim 1 or 2, it is characterized in that: the entire length of described each segmented electrode (2-1) is 15.5~20.5mm, width is 2~4mm.
4. solar cell back face electrode structure as claimed in claim 1 or 2 is characterized in that: the edge of described each segmented electrode (2-1) is evenly distributed with the feeler (2-1-1) of giving birth to extension.
5. solar cell back face electrode structure as claimed in claim 4, it is characterized in that: the length of described feeler (2-1-1) is 0.25~0.5mm, and width is 0.25~0.5mm, and the spacing d2 between each feeler (2-1-1) is 0.25~0.5mm.
6. solar cell back face electrode structure as claimed in claim 1 or 2 is characterized in that: described silicon chip (1) is monocrystalline silicon piece or the polysilicon chip of 156mm for length and width.
7. a solar battery sheet is characterized in that: the back side of described solar battery sheet is for as the described solar cell back face of claim 1-6 any one electrode structure.
CN 201220586104 2012-11-08 2012-11-08 Solar cell and backside electrode structure thereof Expired - Fee Related CN202957257U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220586104 CN202957257U (en) 2012-11-08 2012-11-08 Solar cell and backside electrode structure thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220586104 CN202957257U (en) 2012-11-08 2012-11-08 Solar cell and backside electrode structure thereof

Publications (1)

Publication Number Publication Date
CN202957257U true CN202957257U (en) 2013-05-29

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Family Applications (1)

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CN 201220586104 Expired - Fee Related CN202957257U (en) 2012-11-08 2012-11-08 Solar cell and backside electrode structure thereof

Country Status (1)

Country Link
CN (1) CN202957257U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104300019A (en) * 2013-07-15 2015-01-21 茂迪股份有限公司 Solar cell, module thereof and manufacturing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104300019A (en) * 2013-07-15 2015-01-21 茂迪股份有限公司 Solar cell, module thereof and manufacturing method thereof
CN104300019B (en) * 2013-07-15 2016-08-17 茂迪股份有限公司 Solar cell, module thereof and manufacturing method thereof

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C14 Grant of patent or utility model
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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130529

Termination date: 20151108

EXPY Termination of patent right or utility model