CN205904864U - A gyro wheel for solar cell glossing - Google Patents
A gyro wheel for solar cell glossing Download PDFInfo
- Publication number
- CN205904864U CN205904864U CN201620665892.1U CN201620665892U CN205904864U CN 205904864 U CN205904864 U CN 205904864U CN 201620665892 U CN201620665892 U CN 201620665892U CN 205904864 U CN205904864 U CN 205904864U
- Authority
- CN
- China
- Prior art keywords
- roller
- glossing
- solaode
- ring washer
- projected parts
- 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
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model provides a gyro wheel for solar cell glossing includes: the pivot centers on the wheel body of pivot, the wheel body surface a plurality of edges of equipartition the protruding structure of strip that the wheel body axis direction extends, just wheel body's the gear form of axle cross -section for having a plurality of dogtooths, wheel body's surface is provided with at least two rings connected in star, be provided with the ring washer in the annular groove, the distance between the adjacent two rings shape packing ring is less than the biggest radial length of silicon chip. The utility model provides a gyro wheel for solar cell glossing can be used to solve the spill -out that gyro wheel structure among the prior art can increase silicon chip surface water in the etching bath to the problem that has the slight damage to back micro -structure.
Description
Technical field
This utility model belongs to area of solar cell, more particularly to a kind of solar battery sheet etching back of the body polishing rolling
Wheel.
Background technology
Common crystal silicon solar energy battery be made up of backplate, semi-conducting material p-type layer, n-layer, p-n junction,
The part such as antireflection film, positive gate electrode forms.When solar irradiation is mapped to solar cell surface, antireflection film and floss
Face structure is effectively reduced the light reflection loss of battery surface.After semiconductor structure in solaode absorbs solar energy.Swash
Send out and produce electronics, hole pair, to by the internal p-n junction built-in field of quasiconductor separately, electron stream enters n area, hole for electronics, hole
Flow into p area, form photoproduction electric field, if crystalline silicon can the positive and negative electrode of battery be connected with external circuit very much, in external circuit just
Photogenerated current is had to pass through.
The manufacturing process of solaode generally comprise cleaning and texturing, diffusing, doping, the cleaning of etching/psg, back of the body polishing,
The steps such as pecvdsin plated film, electrode silk screen printing and drying sintering.Wherein, back of the body glossing is the surface using corrosive liquid
Tension force, makes the cell piece only back side and surrounding contact corrosion liquid and front does not contact in theory, is commonly called as " Overwater-floating " technique.Due to electricity
Pond front does not carry out sin plated film, after that is, this process station is in " removing psg " " pecvd preparation front sin passivating film " it
Before, and due to cell piece surrounding also contact corrosion liquid, therefore plasma etching step can be saved.But, such technique is to setting
Standby required precision is higher it is desirable to liquid level can not have big shake, and liquid level otherwise can be made to cover the front of cell piece by front
P-n junction erodes, and reduces the light-receiving area in front.
Used in existing back of the body glossing, as depicted in figs. 1 and 2, described roller includes rotary shaft and helical form to roller
Bulge-structure.Wherein, described helical raised structure can be right-handed screw shape structure or backpitch shape structure.In back of the body polish etch
In technique, mounting means in etching groove for the roller is previous roller is right-handed screw (Fig. 1), and a rear roller is backpitch
(Fig. 2) alternately mounting means, prevents silicon chip sideslip in process of production.But silicon chip is under the drive of roller according to similar s shape
The mode of nearly straight line is walked although preventing sideslip, but increased the amplitude that surface is laterally shaken.
At present, before silicon chip entrance main equipment performs etching, the commonly used diffusion spraying pure water moisture film protection silicon chip
Enter etching groove behind face, by the roller rotating, medicinal liquid is taken up in etching groove, and then reach removal solar cell back face
And the purpose of the n-type silicon at edge.But in moisture film technique, existing roller structure can increase overflowing of silicon chip surface water in etching groove
Output, and have the possibility of slight damage to back side micro structure.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide one kind to be used for solaode
The roller of glossing, can increase the spill-out of silicon chip surface water in etching groove for solving roller structure of the prior art,
And there is the problem of slight damage to back side micro structure.
For achieving the above object and other related purposes, this utility model provides and a kind of is used for solaode glossing
Roller, described roller includes: rotating shaft, around the roller body of described rotating shaft, described roller body surface uniformly multiple along institute
State the strip projected parts structure of roller body axis direction extension, and the shaft section of described roller body is the tooth with multiple double wedges
Colyliform；The outer surface of described roller body is provided with least two annular grooves, is provided with ring washer in described annular groove,
The distance between two adjacent ring washers are less than the maximum radial length of silicon chip.
Preferably, form V-shaped angle between adjacent two described strip projected parts structures.
Preferably, the cross section of described strip projected parts structure is fillet trapezoid structure.
Preferably, the bottom of described strip projected parts structure is arrived to the height at the top of described strip projected parts structure for 3mm
6mm.
Preferably, the quantity of described strip projected parts structure is 14 to 24.
Preferably, from shaft axis to the greatest radius on described ring washer surface than from shaft axis to described roller body table
Long 0.3mm to the 0.5mm of greatest radius in face.
Preferably, the width of described ring washer is 2.5 ± 0.5mm.
Preferably, described ring washer is symmetricly set in the both sides at roller axis center, and described ring washer is uniformly arranged
Between a quarter of described roller axial length is to 3/4ths.
Preferably, the material of described rotating shaft is metal material, and the material of described roller body is pvdf material, described annular
The material of packing ring is fkm material.
Preferably, a diameter of 8mm to 12mm of described rotating shaft, the overall diameter of described ring washer is 76mm to 80mm.
As described above, the roller for solaode glossing of the present utility model, have the advantages that
1) so as to run more steady in etching groove, on minimizing moisture film, water overflows the amplitude of present invention reduction silicon chip shake
Output.
2) present invention optimizes silicon chip back of the body polishing effect in current etching technics, reduce the back side leading to due to roller design
The probability of Micro-architecture deterioration.
3) present invention can realize carrying on the back the mesh of polishing in manufacture of solar cells in the case of not affecting front side of silicon wafer
Mark, simple to operate, excellent result.
Brief description
Fig. 1 is shown as the roller schematic diagram for solaode glossing of this utility model (in prior art).
Fig. 2 is shown as the roller schematic diagram for solaode glossing of this utility model (in prior art).
Fig. 3 is shown as the side view of the roller structure for solaode glossing of the present utility model.
Fig. 4 is shown as the section that the roller structure for solaode glossing of the present utility model intercepts along a-a
Figure.
Fig. 5 is shown as the section that the roller structure for solaode glossing of the present utility model intercepts along b-b
Figure.
Component label instructions
1 rotating shaft
2 roller body
3 ring washers
4 strip projected parts
Specific embodiment
Hereinafter embodiment of the present utility model is illustrated by particular specific embodiment, those skilled in the art can be by this
Content disclosed by description understands other advantages of the present utility model and effect easily.
Refer to Fig. 3 to Fig. 5.It should be clear that structure depicted in this specification institute accompanying drawings, ratio, size etc., all only in order to
Content disclosed in cooperation description, so that those skilled in the art understands and reads, is not limited to this utility model
Enforceable qualificationss, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment, under not affecting this utility model effect that can be generated by and the purpose that can reach, all should still fall in this utility model
In the range of disclosed technology contents obtain and can cover.Meanwhile, in this specification cited as " on ", D score, " left ",
The term of " right ", " middle " and " one " etc., is merely convenient to understanding of narration, and it is enforceable to be not used to restriction this utility model
Scope, being altered or modified of its relativeness, under no essence change technology contents, enforceable when being also considered as this utility model
Category.
As shown in Fig. 3 to Fig. 5, this utility model provides a kind of roller for solar battery back polishing, described is used for
The roller of solar battery back polishing includes: rotating shaft, around the roller body of described rotating shaft, described roller body surface is uniformly many
The individual strip projected parts structure extending along described roller body axis direction, and the shaft section of described roller body is multiple convex for having
The gear-like of tooth；The outer surface of described roller body is provided with least two annular grooves, is provided with ring in described annular groove
Shape packing ring.In the present embodiment, in process of production silicon chip run direction consistent with the direction that roller rotates it is not necessary to carry out horizontal stroke
To movement, groove bands liquid and silicon chip lower surface good contact, the bubble that between groove, plane press solution and silicon chip react, in local
When silicon chip leaves roller, gently contact with solution, reduce the amplitude of silicon chip shake so as to run more flat in etching groove
Surely, reduce the spilling of water.
Specifically, in the present embodiment, described roller body is coaxial with described rotating shaft.12mm is arrived in a diameter of the 8 of described rotating shaft,
Preferably, a diameter of 8mm of rotating shaft.
The external diameter of described ring washer is for 76mm to 80mm it is preferable that axial length is 76mm.The width of described ring washer
Spend for 2.5 ± 0.5mm.Wherein, the greatest radius recording from shaft axis to ring washer surface are than from shaft axis to roller body
Long 0.3mm to the 0.5mm of greatest radius that surface records, wherein, preferably 0.4mm.The radius of described ring washer is slightly larger than institute
State the radius of roller body so that roller becomes, with the directly contact of silicon chip, the contact that ring washer is with silicon chip, not only may be used
To prevent roller from scratching silicon chip back side due to hard friction, and vibrations can be reduced.Ring washer described in the present embodiment is o
Type circle.
Less than the maximum radial length of silicon chip, silicon chip is in annular to the distance between described two adjacent ring washers
Walk on packing ring, to ensure that silicon chip do not deviate by transmission track.Specifically, in the present embodiment, die size is 125mm*125mm
With two kinds of 156mm*156mm.Wherein, described ring washer is symmetricly set in the both sides at roller axis center, described ring washer
The a quarter being uniformly arranged on described roller axial length is between 3/4ths.Specifically, when roller has two annulars
During packing ring, described two ring washers are symmetricly set in the both sides at described roller axis center, between described two ring washers
Spacing is 70 to 80mm.When roller has four ring washers, described ring washer is equidistant to be symmetricly set in described roller
The both sides of axis centre, the spacing between described four ring washers is 15mm to 20mm.
The cross section of described strip projected parts structure is fillet trapezoid structure.The quantity of described strip projected parts structure arrives for 14
24.Specifically, in this enforcement, the height at bottom to the top of described strip projected parts structure of described strip projected parts structure is
3mm to 6mm.Described strip projected parts structure size is equal, and described strip projected parts structure makees annular week along described roller body center
Phase property array distribution is in the periphery of described roller body.Strip projected parts structure in the present embodiment is 16.
Wherein, form V-shaped angle between described strip projected parts structure and adjacent strip projected parts structure.Other embodiments
In, described V-shaped groove structure can also be inverted trapezoidal type groove, arc groove, and here does not limit.
In this enforcement, the making material of described rotating shaft is metal.For example, metallic iron, stainless steel material etc..Described rotating shaft and
Ring washer is all using being difficult silicon chip is caused the material damaged.The material of described roller body is pvdf material, described annular
The material of packing ring is fkm material.Wherein, described pvdf (polyvinylidene fluoride), is primarily referred to as vinylidene equal
The copolymer of polymers or vinylidene and other fluorine-containing vinyl monomers on a small quantity, it has the spy of fluororesin and resins for universal use concurrently
Property, there is good chemical resistance, heat-resisting quantity, oxidative resistance, weatherability performance etc..Described fkm is the contracting of fluorubber
Write, it has good high temperature resistant, oil resistant, decay resistance etc..
In sum, this utility model provide a kind of roller for solar battery back polishing, described for solar energy
The roller of battery back of the body polishing includes: rotating shaft, around the roller body of described rotating shaft, described roller body surface uniformly multiple strips
Bulge-structure, the shaft section of described roller body is polygonal gear type.The outer surface of described roller body is provided with least two
Annular groove, is provided with ring washer in described annular groove, has the advantages that
1) so as to run more steady in etching groove, on minimizing moisture film, water overflows the amplitude of present invention reduction silicon chip shake
Output.
2) present invention optimizes silicon chip back of the body polishing effect in current etching technics, reduce the back side leading to due to roller design
The probability of Micro-architecture deterioration.
3) present invention can realize carrying on the back the mesh of polishing in manufacture of solar cells in the case of not affecting front side of silicon wafer
Mark, simple to operate, excellent result.
So, this utility model effectively overcomes various shortcoming of the prior art and has high industrial utilization.
Above-described embodiment only illustrative principle of the present utility model and its effect are new not for limiting this practicality
Type.Any person skilled in the art all can be carried out to above-described embodiment without prejudice under spirit and the scope of the present utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in this utility model
All equivalent modifications being completed under god and technological thought or change, must be covered by claim of the present utility model.
Claims (10)
1. a kind of roller for solaode glossing it is characterised in that described for solaode glossing
Roller include:
Rotating shaft, around the roller body of described rotating shaft, described roller body surface uniformly multiple along described roller body axis side
To the strip projected parts structure extending, and the shaft section of described roller body is the gear-like with multiple double wedges；
The outer surface of described roller body is provided with least two annular grooves, is provided with ring washer in described annular groove,
The distance between two adjacent ring washers are less than the maximum radial length of silicon chip.
2. according to described in claim 1 for solaode glossing roller it is characterised in that: described in adjacent two
Form V-shaped angle between strip projected parts structure.
3. the roller for solaode glossing according to claim 1 it is characterised in that: described strip projected parts
The cross section of structure is fillet trapezoid structure.
4. the roller for solaode glossing according to claim 1 it is characterised in that: described strip projected parts
The bottom of structure is 3mm to 6mm to the height at the top of described strip projected parts structure.
5. the roller for solaode glossing according to claim 1 it is characterised in that: described strip projected parts
The quantity of structure is 14 to 24.
6. the roller for solaode glossing according to claim 1 it is characterised in that: from shaft axis to institute
State the greatest radius on ring washer surface than from shaft axis to long 0.3mm to the 0.5mm of the greatest radius on described roller body surface.
7. the roller for solaode glossing according to claim 1 it is characterised in that: described ring washer
Width be 2.5 ± 0.5mm.
8. the roller for solaode glossing according to claim 1 it is characterised in that: described ring washer
It is symmetricly set in the both sides at roller axis center, described ring washer is uniformly arranged on a quarter of described roller axial length
To between 3/4ths.
9. the roller for solaode glossing according to claim 1 it is characterised in that: the material of described rotating shaft
Matter is metal material, and the material of described roller body is pvdf material, and the material of described ring washer is fkm material.
10. the roller for solaode glossing according to claim 1 it is characterised in that: described rotating shaft
A diameter of 8mm to 12mm, the overall diameter of described ring washer is 76mm to 80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620665892.1U CN205904864U (en) | 2016-06-29 | 2016-06-29 | A gyro wheel for solar cell glossing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620665892.1U CN205904864U (en) | 2016-06-29 | 2016-06-29 | A gyro wheel for solar cell glossing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205904864U true CN205904864U (en) | 2017-01-25 |
Family
ID=57812225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620665892.1U Expired - Fee Related CN205904864U (en) | 2016-06-29 | 2016-06-29 | A gyro wheel for solar cell glossing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205904864U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195573A (en) * | 2017-07-14 | 2017-09-22 | 通威太阳能（合肥）有限公司 | SCHMID etching tank capable of reducing acid consumption and using method thereof |
| CN108044480A (en) * | 2017-12-06 | 2018-05-18 | 浙江工业大学 | A kind of polishing roller of the trapezoidal protrusion of band for the pressure burnishing device that linearly surges |
| CN109037123A (en) * | 2018-09-27 | 2018-12-18 | 通威太阳能（安徽）有限公司 | A kind of mucus idler wheel for moisture film etching technics |
| CN112271232A (en) * | 2020-09-11 | 2021-01-26 | 泰州隆基乐叶光伏科技有限公司 | Method for manufacturing solar cell |
| CN113690342A (en) * | 2021-08-11 | 2021-11-23 | 浙江中晶新能源股份有限公司 | Chain type back polishing equipment for polycrystalline silicon battery piece |
-
2016
- 2016-06-29 CN CN201620665892.1U patent/CN205904864U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195573A (en) * | 2017-07-14 | 2017-09-22 | 通威太阳能（合肥）有限公司 | SCHMID etching tank capable of reducing acid consumption and using method thereof |
| CN108044480A (en) * | 2017-12-06 | 2018-05-18 | 浙江工业大学 | A kind of polishing roller of the trapezoidal protrusion of band for the pressure burnishing device that linearly surges |
| CN109037123A (en) * | 2018-09-27 | 2018-12-18 | 通威太阳能（安徽）有限公司 | A kind of mucus idler wheel for moisture film etching technics |
| CN109037123B (en) * | 2018-09-27 | 2023-09-26 | 通威太阳能（安徽）有限公司 | Mucilage roller for water film etching process |
| CN112271232A (en) * | 2020-09-11 | 2021-01-26 | 泰州隆基乐叶光伏科技有限公司 | Method for manufacturing solar cell |
| CN113690342A (en) * | 2021-08-11 | 2021-11-23 | 浙江中晶新能源股份有限公司 | Chain type back polishing equipment for polycrystalline silicon battery piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 Termination date: 20190629 |