CN202888143U - Delivery roller and chemical corrosion device - Google Patents
Delivery roller and chemical corrosion device Download PDFInfo
- Publication number
- CN202888143U CN202888143U CN 201220591109 CN201220591109U CN202888143U CN 202888143 U CN202888143 U CN 202888143U CN 201220591109 CN201220591109 CN 201220591109 CN 201220591109 U CN201220591109 U CN 201220591109U CN 202888143 U CN202888143 U CN 202888143U
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- delivery roller
- chemical corrosion
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- roller
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Abstract
The utility model discloses a delivery roller. The cross section of the delivery roller is in a gear shape; and by using the gear-shaped delivery roller, the contact area between the delivery roller and a silicon wafer during delivery is reduced, generation of roller imprints on the surface of the silicon wafer during chemical corrosion can be avoided, and a chemical corrosion effect is improved so as to eliminate the influence of the roller imprints on the appearance and the electric performance of battery pieces. The utility model also discloses a corrosion device with the delivery roller.
Description
Technical field
The utility model relates to crystal silicon solar energy battery and makes field, particularly a kind of delivery roller and chemical corrosion device.
Background technology
Solar cell is as one of the new energy materials in the world, and its development is very rapid.The operation of making solar battery sheet generally includes silicon chip surface making herbs into wool, diffusion PN junction processed (PN junction), etching, coated with antireflection film, the series of processes such as silk screen printing, sintering.Wherein, the making herbs into wool operation is in order effectively to reduce the reflection of surface of crystalline silicon, raising light trapping effect, thereby the electrical property of raising cell piece.And in diffusing procedure, no matter be single face diffusion or Double side diffusion, all inevitably also formed diffusion layer in silicon chips periphery, and the back side that the positive collected light induced electron of PN junction can be along the edge-diffusion laminar flow to PN junction, thus short circuit caused.Exist any small partial short-circuit that cell parallel resistance is descended on the periphery, reverse current increases, and reduces the overall performance electrical performance of solar cell.Therefore, must carry out etching to the doped silicon at solar cell periphery and the back side, to remove the PN junction of battery edge.So etching also is one of important procedure of preparation solar battery sheet.
Generally adopt chemical corrosion method to carry out making herbs into wool and the etching of silicon chip in the crystal silicon solar energy battery suitability for industrialized production at present.Its advantage is that equipment requirement is low, and corrosion surface is smooth smooth.Yet in prior art chemical corrosion process, the cross section of the delivery roller in the corrosion device is that circular, such delivery roller can cause occurring two rolling wheel stamps on the silicon chip, affects the corrosive effect of silicon chip.And this rolling wheel stamp can become particularly evident after silicon chip plates antireflective coating, had a strong impact on outward appearance and the electrical property of solar battery sheet.
Therefore, how to improve the structure of the delivery roller in the corrosion device, avoid the generation of silicon chip surface rolling wheel stamp, improve corrosive effect, eliminate rolling wheel stamp to the impact of cell piece outward appearance and electrical property, become the important technological problems that those skilled in the art need to be resolved hurrily.
The utility model content
In view of this, main purpose of the present utility model is to provide a kind of delivery roller, to avoid the generation of silicon chip surface rolling wheel stamp, improves corrosive effect, eliminates rolling wheel stamp to the impact of cell piece outward appearance and electrical property.
For achieving the above object, the utility model provides following technical scheme:
A kind of delivery roller, the cross section of described delivery roller are gear-like.
Preferably, the tooth top of described delivery roller is circular-arc.
Preferably, the number of teeth of described delivery roller is 6-30.
Preferably, described delivery roller is that resistant material is made.
Preferably, the number of teeth of described delivery roller is 16.
Preferably, described delivery roller is straight spur gear.
A kind of chemical corrosion device comprises etching tank, rotating shaft and aforesaid delivery roller, and wherein, described rotating shaft is supported in the described etching tank rotationally, and described delivery roller is installed in the described rotating shaft.
Can find out from above-mentioned technical scheme, the cross section of the delivery roller that the utility model provides is gear-like, adopt the delivery roller of this shape, reduced the contact area of delivery roller and silicon chip in transport process, can avoid the generation of silicon chip surface rolling wheel stamp in the chemical corrosion process, improve the effect of chemical corrosion, thereby eliminate rolling wheel stamp to the impact of cell piece outward appearance and electrical property.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the chemical corrosion device that Fig. 1 provides for the utility model.
Embodiment
The utility model provides a kind of delivery roller, reaches to avoid producing rolling wheel stamp at silicon chip surface, improves corrosive effect, eliminates rolling wheel stamp to the purpose of the impact of cell piece outward appearance and electrical property.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 1, the structural representation of the chemical corrosion device that Fig. 1 provides for the utility model.
The cross section of the delivery roller 4 that the utility model provides is gear-like, be that circular delivery roller is compared with cross section in the prior art, adopt the delivery roller 4 of this shape, can reduce the contact area of delivery roller in the transport process 4 and silicon chip as far as possible, avoid the generation of silicon chip surface rolling wheel stamp in the chemical corrosion process, improve the effect of chemical corrosion, eliminate rolling wheel stamp to the impact of cell piece outward appearance and electrical property.
The tooth top of the delivery roller 4 that the utility model provides is circular-arc, can protect silicon chip like this, avoids silicon chip to be transmitted roller and scratches or smash.
The number of teeth of delivery roller 4 is 6-30, the number of teeth is less than 6, transmit not steady, can affect the transmission efficiency of silicon chip, delivery roller 4 numbers of teeth are more than 30, can make the shape of cross section of delivery roller 4 near annular, can't effectively reach the purpose of avoiding the silicon chip surface rolling wheel stamp to produce, moreover, transmission gear 4 numbers of teeth can cause teeth too very thin too much, fracture easily, and it is that 16 straight spur gear is delivery roller that the utility model embodiment adopts the number of teeth, certainly, also it can be made as in case of necessity the gear of other shape.
Because delivery roller 4 need to be worked in corrosive environment, so delivery roller 4 is preferably made by resistant material.
The utility model provides a kind of chemical corrosion device 6, chemical corrosion device 6 comprises etching tank 1, rotating shaft 3, delivery roller 4, wherein, rotating shaft 3 is supported in the etching tank 1 rotationally, delivery roller 4 is installed in the rotating shaft 3, and be immersed in the corrosive liquid 2, silicon chip 5 moves under the drive of delivery roller 4.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a delivery roller is used for being installed in the rotating shaft of chemical corrosion device, it is characterized in that the cross section of described delivery roller (4) is gear-like.
2. delivery roller according to claim 1 is characterized in that, the tooth top of described delivery roller (4) is circular-arc.
3. delivery roller according to claim 1 is characterized in that, the number of teeth of described delivery roller (4) is 6-30.
4. delivery roller according to claim 1 is characterized in that, described delivery roller (4) is made for resistant material.
5. delivery roller according to claim 1 is characterized in that, the number of teeth of described delivery roller (4) is 16.
6. delivery roller according to claim 1 is characterized in that, described delivery roller (4) is straight spur gear.
7. chemical corrosion device, it is characterized in that, comprise etching tank (1), rotating shaft (3) and such as the described delivery roller of claim 1-6 any one (4), wherein, described rotating shaft (3) is supported in the described etching tank (1) rotationally, and described delivery roller (4) is installed in the described rotating shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220591109 CN202888143U (en) | 2012-11-09 | 2012-11-09 | Delivery roller and chemical corrosion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220591109 CN202888143U (en) | 2012-11-09 | 2012-11-09 | Delivery roller and chemical corrosion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202888143U true CN202888143U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220591109 Expired - Fee Related CN202888143U (en) | 2012-11-09 | 2012-11-09 | Delivery roller and chemical corrosion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202888143U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839773A (en) * | 2014-02-21 | 2014-06-04 | 上海华力微电子有限公司 | Acid tank for wet etching process |
| CN106876262A (en) * | 2016-12-30 | 2017-06-20 | 常州星海电子股份有限公司 | One kind makes highly-efficient glass passivation chip technology |
-
2012
- 2012-11-09 CN CN 201220591109 patent/CN202888143U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839773A (en) * | 2014-02-21 | 2014-06-04 | 上海华力微电子有限公司 | Acid tank for wet etching process |
| CN103839773B (en) * | 2014-02-21 | 2017-01-25 | 上海华力微电子有限公司 | Acid tank for wet etching process |
| CN106876262A (en) * | 2016-12-30 | 2017-06-20 | 常州星海电子股份有限公司 | One kind makes highly-efficient glass passivation chip technology |
| CN106876262B (en) * | 2016-12-30 | 2019-10-25 | 常州星海电子股份有限公司 | A kind of production highly-efficient glass passivation chip technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160215 Address after: The British Virgin Islands of Tortola Rodez VG1110 Patentee after: Fai Fai investment management company Address before: 214200 Jiangsu city of Wuxi province Yixing Qingyuan Road Economic Development Zone No. 27 (East) Patentee before: Zhejiang Yuhui Solar Energy Jiangsu Co., Ltd. |
|
| 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: 20130417 Termination date: 20191109 |