CN209551432U - A kind of polishing idler wheel for manufacture of solar cells - Google Patents
A kind of polishing idler wheel for manufacture of solar cells Download PDFInfo
- Publication number
- CN209551432U CN209551432U CN201822149854.2U CN201822149854U CN209551432U CN 209551432 U CN209551432 U CN 209551432U CN 201822149854 U CN201822149854 U CN 201822149854U CN 209551432 U CN209551432 U CN 209551432U
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- China
- Prior art keywords
- polishing
- idler wheel
- contact
- manufacture
- solar cells
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- 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.)
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- 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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- ing And Chemical Polishing (AREA)
Abstract
The utility model discloses a kind of polishing idler wheels for manufacture of solar cells, including polishing barrel and two shafts, two shafts are arranged on two opposing end surfaces of polishing barrel and coaxially arranged with polishing barrel, the polishing barrel lateral wall is equipped with multiple annular projections contacted with product, the annular projection is equipped with contact notch, forms contact projection between two adjacent contact notches.The utility model provides a kind of polishing idler wheel for manufacture of solar cells, can reduce polishing idler wheel transmission when and product contact area, it contacts product more fully with the corrosion medical fluid of wet etching, comes into full contact with, react more uniform, polishing effect is more preferable；There are the advantages such as structure is simple, and manufacturing cost is low simultaneously.
Description
Technical field
The utility model relates to area of solar cell, roll more particularly, to a kind of polishing for manufacture of solar cells
Wheel.
Background technique
It needs to perform etching the surrounding of product in manufacture of solar cells manufacturing process, after diffusion, mostly select at present
The mode of wet etching.With the continuous innovation of solar cell industry, the transfer efficiency of solar battery product is required not
It is disconnected to improve；Some novel solar battery products continue to bring out, and presently the most mainstream will count solar battery PERC product,
I.e. before conventional solar cells product prints Al-BSF, overleaf lead to Al2O3Film layer passivation, to reach promotion solar energy
1% or more battery product photoelectric conversion efficiency.
Solar battery PERC product overleaf Al2O3Film layer passivation before, need first to carry out polished backside, polishing effect
Good and 0.3% or more the photoelectric conversion efficiency for badly directly influencing PERC product of fruit；It is polished on the idler wheel of wet etching at present
The contact area of idler wheel and product is larger, and polished backside is unable to reach optimal effect.
Chinese patent application publication number CN201962364U, publication date are on 09 07th, 2011, a kind of entitled " monocrystalline
Silicon solar cell Wet-method etching device " discloses a kind of monocrystaline silicon solar cell piece Wet-method etching device, it includes carving
Erosion slot (1) and multiple idler wheels (3), etching groove (1) are provided with etching liquid (2), and multiple idler wheels (3) are installed in etching groove (1),
It is immersed in etching liquid (2).But above-mentioned apparatus idler wheel and the contact area of positive energy cell piece are big, do not solve the above problems yet.
Summary of the invention
The utility model in order to overcome the shortcomings in the prior art, provides a kind of polishing rolling for manufacture of solar cells
Wheel, it is possible to reduce polishing idler wheel transmission when and product contact area, obtain the corrosion medical fluid of product and wet etching more
Adequately contact, comes into full contact with, reacts more uniform, polishing effect is more preferable；There is structure is simple, and manufacturing cost is low etc. simultaneously
Advantage.
To achieve the goals above, the utility model uses following technical scheme:
A kind of polishing idler wheel for manufacture of solar cells, including polishing barrel and two shafts, two shaft settings exist
On two opposing end surfaces of polishing barrel and coaxially arranged with polishing barrel, the polishing barrel lateral wall is contacted equipped with multiple with product
Annular projection, the annular projection is equipped with contact notch, forms contact projection between two adjacent contact notches.It is described
It polishes idler wheel to be rotatablely connected by two shafts and external structure, external structure driving polishing idler wheel rotation.It is above-mentioned by implementing
Technical solution, it is possible to reduce polishing idler wheel transmission when and product contact area, obtain the corrosion medical fluid of product and wet etching
It to more fully contacting, comes into full contact with, reacts more uniform, polishing effect is more preferable.
Preferably, the contact projection is the lesser class triangle of the larger top dimension of bottom size.The contact is convex
The shape risen can be such that product is further reduced with the contact area for polishing idler wheel, further increase polishing effect.Bottom size compared with
It can guarantee the stability of contact projection structure greatly.
Preferably, the contact projection is circumferentially uniformly distributed along annular projection.The structure can make product in wet process
That walks in etching process is steady, guarantees processing effect.
Preferably, the axial section shape of the annular projection is the lesser class ladder of the larger top dimension of bottom size
Shape.The structure can axially reduce contact area between product and polishing idler wheel, further increase polishing effect.Bottom size
The larger stability that can guarantee contact projection structure.
Preferably, the multiple annular projection is parallel to each other and, multiple annular projections edges throwing parallel with polishing barrel end face
Light cylinder is axially uniformly distributed.The structure is walked during can guaranteeing product in wet etching while reducing contact area
Stationarity.
Preferably, the multiple end to end formation helical raised of annular projection, helical raised is outside polishing barrel
Side wall is uniformly distributed.The structure is walked flat during can guaranteeing product in wet etching while reducing contact area
Stability.
The beneficial effects of the utility model are: (1) reduce polishing idler wheel transmission when and product contact area, make product with
The corrosion medical fluid of wet etching comes into full contact with, and sufficiently more evenly, polishing effect reaches most preferably for reaction, and (2) guarantee product in wet process
The stationarity walked in etching process；(3) structure is simple.
Detailed description of the invention
Fig. 1 is 1 structural schematic diagram of embodiment；
Fig. 2 is 1 cross-sectional view of embodiment；
Fig. 3 is the structural schematic diagram of embodiment 2；
Fig. 4 is the side view of embodiment 2.
In figure: shaft 1, polishing barrel 2, annular projection 3, contact notch 3.1, contact projection 3.2, helical raised 4, product
5。
Specific embodiment
The utility model is further described in the following with reference to the drawings and specific embodiments.
Embodiment 1:
As depicted in figs. 1 and 2, a kind of polishing idler wheel for manufacture of solar cells, including polishing barrel 2 and two shafts
1, on two opposing end surfaces of polishing barrel 2 and coaxially arranged with polishing barrel 2,2 lateral wall of polishing barrel is arranged in two shafts 1
Multiple annular projections 3 contacted with product are equipped with, the multiple annular projection 3 is parallel to each other and parallel with 2 end face of polishing barrel,
Multiple annular projections 3 are axially uniformly distributed along polishing barrel 2；The axial section shape of annular projection 3 is the larger top of bottom size
The lesser class of size is trapezoidal；The annular projection 3 is equipped with contact notch 3.1, is formed between two adjacent contact notches 3.1
Contact projection 3.2；The contact projection 3.2 is circumferentially uniformly distributed along annular projection 3；The contact projection 3.2 is bottom size
The larger lesser class triangle of top dimension.
The polishing idler wheel is rotatablely connected by two shafts 1 and external structure, external structure driving polishing idler wheel rotation.
By implementing above-mentioned technical proposal, it is possible to reduce contact area when polishing idler wheel transmission with product 5 carves product 5 and wet process
The corrosion medical fluid of erosion is more fully contacted, and is come into full contact with, and reacts more uniform, polishing effect is more preferable.It can protect simultaneously
The stationarity that card product 5 is walked during wet etching.
Embodiment 2:
As shown in Figure 3 and Figure 4, a kind of polishing idler wheel for manufacture of solar cells, including polishing barrel 2 and two shafts
1, on two opposing end surfaces of polishing barrel 2 and coaxially arranged with polishing barrel 2,2 lateral wall of polishing barrel is arranged in two shafts 1
It is equipped with multiple annular projections 3 contacted with product, the end to end formation helical raised 4 of the multiple annular projection 3, spiral
Shape protrusion 4 is uniformly distributed along 2 lateral wall of polishing barrel；The axial section shape of annular projection 3 is the larger top dimension of bottom size
Lesser class is trapezoidal；The annular projection 3 is equipped with contact notch 3.1, forms contact between two adjacent contact notches 3.1
Protrusion 3.2；The contact projection 3.2 is circumferentially uniformly distributed along annular projection 3；The contact projection 3.2 is that bottom size is larger
The lesser class triangle of top dimension.
The polishing idler wheel is rotatablely connected by two shafts 1 and external structure, external structure driving polishing idler wheel rotation.
By implementing above-mentioned technical proposal, it is possible to reduce contact area when polishing idler wheel transmission with product 5 carves product 5 and wet process
The corrosion medical fluid of erosion is more fully contacted, and is come into full contact with, and reacts more uniform, polishing effect is more preferable.It can protect simultaneously
The stationarity that card product 5 is walked during wet etching.
The beneficial effects of the utility model are: maximization reduces when polishing idler wheel is driven and the contact area of product, make to produce
The corrosion medical fluid of product and wet etching comes into full contact with, and sufficiently more evenly, polishing effect reaches most preferably, while guaranteeing product again for reaction
The stationarity walked during wet etching.
Claims (6)
1. a kind of polishing idler wheel for manufacture of solar cells, including polishing barrel and two shafts, two shaft settings are being thrown
It is on two opposing end surfaces of light cylinder and coaxially arranged with polishing barrel, characterized in that the polishing barrel lateral wall be equipped with it is multiple with
The annular projection of product contact, the annular projection are equipped with contact notch, form contact between two adjacent contact notches
Protrusion.
2. a kind of polishing idler wheel for manufacture of solar cells according to claim 1, characterized in that the contact is convex
Rising is the lesser class triangle of the larger top dimension of bottom size.
3. a kind of polishing idler wheel for manufacture of solar cells according to claim 1, characterized in that the contact is convex
It rises and is circumferentially uniformly distributed along annular projection.
4. a kind of polishing idler wheel for manufacture of solar cells according to claim 1, characterized in that the ring-type is convex
The axial section shape risen is that the lesser class of the larger top dimension of bottom size is trapezoidal.
5. a kind of polishing idler wheel for manufacture of solar cells according to claim 1 or 2 or 3 or 4, characterized in that
The multiple annular projection is parallel to each other and parallel with polishing barrel end face, and multiple annular projections are axially uniformly distributed along polishing barrel.
6. a kind of polishing idler wheel for manufacture of solar cells according to claim 1 or 2 or 3 or 4, characterized in that
The multiple end to end formation helical raised of annular projection, helical raised are uniformly distributed along polishing barrel lateral wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822149854.2U CN209551432U (en) | 2018-12-19 | 2018-12-19 | A kind of polishing idler wheel for manufacture of solar cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822149854.2U CN209551432U (en) | 2018-12-19 | 2018-12-19 | A kind of polishing idler wheel for manufacture of solar cells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209551432U true CN209551432U (en) | 2019-10-29 |
Family
ID=68303949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822149854.2U Expired - Fee Related CN209551432U (en) | 2018-12-19 | 2018-12-19 | A kind of polishing idler wheel for manufacture of solar cells |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209551432U (en) |
-
2018
- 2018-12-19 CN CN201822149854.2U patent/CN209551432U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191029 Termination date: 20201219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |