CN207904389U - The special electroplating device of tubular type PERC double-side solar cells - Google Patents
The special electroplating device of tubular type PERC double-side solar cells Download PDFInfo
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- CN207904389U CN207904389U CN201721844785.6U CN201721844785U CN207904389U CN 207904389 U CN207904389 U CN 207904389U CN 201721844785 U CN201721844785 U CN 201721844785U CN 207904389 U CN207904389 U CN 207904389U
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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
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Abstract
The utility model discloses a kind of special electroplating device of tubular type PERC double-side solar cells, including electroplating bath, the carrying axle set on electroplating bath top and for carrying tubular type PERC double-side solar cells, the LED light being set to above electroplating bath and power supply；Anode plate and brush are equipped in the electroplating bath, the anode of the power supply is connect with anode plate, the cathode of power supply is connect with brush, and brush is connect with the back of the body silver main grid at the tubular type PERC double-side solar cells back side, the back side of the LED light irradiation tubular type PERC double-side solar cells.Using the utility model, increase the conductive uniformity of cell backside electrode, improves the uniformity of front electroplated electrode, and keep the appearance yield of battery.
Description
Technical field
The utility model is related to solar cell field more particularly to a kind of special plating of tubular type PERC double-side solar cells
Equipment.
Background technology
Crystal silicon solar battery is a kind of effectively absorption solar radiant energy, and electric energy is converted optical energy into using photovoltaic effect
Device form new electron-hole pair when solar irradiation is in semiconductor P-N junction, under the action of P-N junction electric field, hole
The areas P are flowed to by the areas N, electronics flows to the areas N by the areas P, and electric current is just formed after connecting circuit.
Conventional crystalline silicon solar cell substantially only with front passivating technique, is deposited in front side of silicon wafer with the mode of PECVD
One layer of silicon nitride reduces few son in the recombination rate of front surface, can significantly promote open-circuit voltage and the short circuit of crystal silicon battery
Electric current, to promote the photoelectric conversion efficiency of crystal silicon solar battery.
As the requirement of the photoelectric conversion efficiency to crystal silicon battery is higher and higher, people, which begin one's study, carries on the back passivating solar battery
Technology.The way of mainstream is using board-like PECVD come to back side coating film, board-like PECVD is made of different chambers, each at present
Chamber plate a tunic, once equipment is fixed, the number of plies of composite membrane has just been fixed, thus the shortcomings that board-like PECVD be cannot spirit
The combination living for adjusting composite membrane, cannot preferably optimize the passivation effect of back side film, to limit the photoelectric conversion efficiency of battery.
Meanwhile board-like PECVD uses indirect plasma method, the passivation effect of film layer not satisfactory.Board-like PECVD also has
Uptime is low, and the disadvantage of maintenance time length influences production capacity and yield.
The utility model deposits composite membrane using tubular type PECVD technique in silicon chip back side, makes the efficient sun of two-sided PERC
Battery.Since tubular type PECVD technique is using direct plasma method, but can with the combination of flexible modulation composite membrane and ingredient,
The photoelectric conversion efficiency of PERC solar cells can be substantially improved in the good passivation effect of film layer.The outstanding passivation of tubular type PECVD technique
The flexibility of performance and technique can reduce the consumption of TMA with the thickness of relative reduction alundum (Al2O3) film layer, meanwhile, tubular type
PERC technologies are easy maintenance, uptime high.In summary many factors, compared with board-like PECVD technique, tubular type PECVD technique
Making efficient PERC batteries has significant overall cost advantage.
The positive electrode of silk-screen printing silver paste technology manufacture double-sided solar battery, silver paste consumption are usually used in the industry
Greatly, of high cost, the line width of silver electrode is also bigger, and shading-area is big, the conductive lack of homogeneity of electrode, and the photoelectricity for influencing battery turns
Change efficiency.In addition, tubular type PECVD technique is due to existing around the problem plated and scratched this pair and condition each other, appearance yield and EL
Yield is relatively low always.
Utility model content
Technical problem to be solved in the utility model also resides in, and provides a kind of above-mentioned tubular type PERC double-side solar cells
Special electroplating device, device structure is simple, increases the conductive uniformity of cell backside electrode, improves the uniform of front electroplated electrode
Property, and keep the appearance yield of battery.
Technical problem to be solved in the utility model also resides in, and provides a kind of above-mentioned tubular type PERC double-side solar cells
Special electroplating device, cost is relatively low, and yield is big, high yield rate.
In order to solve the above-mentioned technical problem, the utility model provides a kind of tubular type PERC double-side solar cells, including electricity
Coating bath, the carrying axle set on electroplating bath top and for carrying tubular type PERC double-side solar cells are set to above electroplating bath
LED light and power supply；
Anode plate and brush are equipped in the electroplating bath, the anode of the power supply is connect with anode plate, the cathode of power supply and
Brush connects, and brush is connect with the back of the body silver main grid at the tubular type PERC double-side solar cells back side, and the LED light irradiation tubular type PERC is bis-
The back side of face solar cell.
As an improvement of the above technical solution, the brush is equipped with groove, and the groove wraps up the silver-colored main grid of the back of the body.
As an improvement of the above technical solution, the brush is strip shape body.
As an improvement of the above technical solution, the section of the groove is arc.
As an improvement of the above technical solution, the material of the brush is graphite.
As an improvement of the above technical solution, the tubular type PERC double-side solar cells include the silver-colored main grid of the back of the body, back of the body alum gate line,
Back side composite membrane, P-type silicon, N-type emitter, front passivating film and positive electrode, the back side composite membrane, P-type silicon, N-type emitter,
Front passivating film and positive electrode stack gradually connection from bottom to up.
As an improvement of the above technical solution, the LED light is LED green lights.
As an improvement of the above technical solution, the electroplating bath is horizontally disposed.
Implement the utility model, has the advantages that：
The utility model uses special electroplating device, and the positive electrode of double-side cell, double-side cell are manufactured using electroplating technology
The brush of the silver-colored main grid connection electroplating device of the back of the body at the back side, increases the conductive uniformity of cell backside electrode.Two-sided electricity is utilized simultaneously
The characteristic of pond back side light irradiates cell backside so that electronics is generated in the laser groove of front side of silicon wafer, to make with LED green lights
Silicon chip deposits front gate line electrode in electroplate liquid, and the uniform performance of good backplate improves front electronics in laser groove
Uniformity, and then improve the uniformity of front electroplated electrode.Double-side cell face down contact plating liquid, the back side upward not with electricity
Plating solution contacts, and backplate is avoided to be corroded by electroplate liquid, to not influence the appearance yield of battery.
Description of the drawings
Fig. 1 is the schematic diagram of the special electroplating device of the utility model tubular type PERC double-side solar cells；
Fig. 2 is the sectional view of the brush of electroplating device；
Fig. 3 is the sectional view of the utility model tubular type PERC double-side solar cells；
Fig. 4 is the schematic diagram of the backside structure of the double-side solar cell of tubular type PERC shown in Fig. 3.
Specific implementation mode
It is new to this practicality below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type is described in further detail.
The positive electrode of silk-screen printing silver paste technology manufacture double-sided solar battery, silver paste consumption are usually used in the industry
Greatly, of high cost, the line width of silver electrode is also bigger, and shading-area is big, influences the photoelectric conversion efficiency of battery.For this reason, this practicality
The positive electrode of novel pipe PERC double-side solar cells is prepared using electroplating device.
As shown in Figure 1, the utility model also provides a kind of special electroplating device of tubular type PERC double-side solar cells, including
Horizontally disposed electroplating bath 10, the carrying axle 20 set on 10 top of electroplating bath and for carrying tubular type PERC double-side solar cells,
LED light 30 above electroplating bath 10 and power supply 40；
Anode plate 50 and brush 60 are equipped in the electroplating bath 10, the anode of the power supply 40 is connect with anode plate 50, electricity
The cathode in source 40 is connect with brush 60, and brush 60 is connect with the back of the body silver main grid at the tubular type PERC double-side solar cells back side, the LED
Lamp 30 irradiates the back side of tubular type PERC double-side solar cells 100.
Specifically, as shown in Fig. 2, the body substantially in a strip shape of the brush 60, which is provided with groove 61, the section of groove 61 is excellent
It is selected as arc, brush 60 is preferably shaped to cuboid, but not limited to this.In use, the groove 61 of brush wraps
The axis direction of the silver-colored main grid of the back of the body, the brush 60 is identical as the silver-colored direction of main grid of the back of the body.
It should be noted that groove 61 is arc along the section of radial direction.
The material of the brush 60 is preferably graphite, it is not easy to damage back of the body silver grating line.
As shown in Figure 3,4, the tubular type PERC double-side solar cells 100 are multiple including the silver-colored main grid 1 of the back of the body, back of the body alum gate line 2, the back side
Close film 3, P-type silicon 5, N-type emitter 6, front passivating film 7 and positive electrode 8；The back side composite membrane 3, P-type silicon 5, N-type emitter
6, front passivating film 7 and positive electrode 8 stack gradually connection from bottom to up.The back side composite membrane 3 is formed after laser slotting
At least 1 group of laser slotting unit 9, the back of the body are arranged in each laser slotting area for 30-500 groups laser slotting area disposed in parallel
Alum gate line 2 is connected by laser slotting area with P-type silicon 5；The back of the body alum gate line 2 and the back of the body 1 vertical connection of silver-colored main grid.
The utility model uses special electroplating device, and the positive electrode of double-side cell, double-side cell are manufactured using electroplating technology
The brush of the silver-colored main grid connection electroplating device of the back of the body at the back side, increases the conductive uniformity of cell backside electrode.Two-sided electricity is utilized simultaneously
The characteristic of pond back side light irradiates cell backside so that electronics is generated in the laser groove of front side of silicon wafer, to make with LED green lights
Silicon chip deposits front gate line electrode in electroplate liquid, and the uniform performance of good backplate improves front electronics in laser groove
Uniformity, and then improve the uniformity of front electroplated electrode.Double-side cell face down contact plating liquid, the back side upward not with electricity
Plating solution contacts, and backplate is avoided to be corroded by electroplate liquid, to not influence the appearance yield of battery.
The utility model uses photoinduction electroplating technology, illumination crystal silicon battery to generate carrier (electrons and holes), inside
Build under the action of electric field, electronics will accumulate in the front surface of cell piece, and void coalescence is in rear surface, and in electroplate liquid metal from
Son, it will reduction reaction occurs at cell piece aggregation electronics, and is deposited at this.Photoinduction electroplating deposition speed is fast, is suitble to
Mass production.The utility model plated material is simple metal, and for the slurry of opposite silk-screen printing, resistivity will be lower, work of resistance
Rate loss will be smaller.
Further, the LED light is preferably LED green lights, the back of the body of the LED light irradiation tubular type PERC double-side solar cells
Face, the specifically silver-colored main grid of the irradiation back of the body, back of the body alum gate line and back side composite membrane, improve the uniformity of front electroplated electrode.
There are also the electrodes that single side crystal silicon solar battery is prepared using electroplating technology still to pass through electroplating technology institute shape
At solar cel electrode depth-width ratio it is poor, i.e. the height of positive electrode is low, width is big, is unfavorable for the collection of light induced electron, and photoelectricity turns
It is low to change efficiency.
But the utility model prepares the front electrode of two-sided crystal silicon battery using photo-induction waveguide technology, by by battery
Face down and plating solution contacts with electroplating bath, and ensure the back side upward and not with the plating solution contacts of electroplating bath, simultaneously will
LED light irradiates the back side of battery, and LED light generates LED green lights.In addition, the junction of silver-colored outline border and galactic ridge bone is provided with electrode hole,
The electrode tip of electrode hole and electroplating device connects, and can solve the problems, such as that the uniformity of electroplating technology formation positive electrode is poor.This
Utility model electroplating technology can improve the uniformity and depth-width ratio of positive electrode to a certain extent.
The positive electrode of the utility model can be silver electrode, can also be copper electrode and nickel electrode, but not limited to this.
In conclusion above equipment is simple in structure, cost is relatively low, and yield is big, high yield rate, can increase cell backside electricity
The conductive uniformity of pole improves the uniformity of front electroplated electrode, and keeps the appearance yield of battery.
Finally, it should be noted that above example is only to illustrate the technical solution of the utility model rather than to this reality
With the limitation of novel protected range, although being explained in detail to the utility model with reference to preferred embodiment, this field it is common
It will be appreciated by the skilled person that can be modified or replaced equivalently to the technical solution of the utility model, without departing from this reality
With the spirit and scope of new technique scheme.
Claims (8)
1. a kind of special electroplating device of tubular type PERC double-side solar cells, which is characterized in that including electroplating bath, be set to electroplating bath
Top and the carrying axle for being used to carry tubular type PERC double-side solar cells, the LED light being set to above electroplating bath and power supply；
Anode plate and brush are equipped in the electroplating bath, the anode of the power supply is connect with anode plate, the cathode and brush of power supply
Connection, brush are connect with the back of the body silver main grid at the tubular type PERC double-side solar cells back side, and the LED light irradiation tubular type PERC is two-sided too
The back side in positive electricity pond.
2. special electroplating device as described in claim 1, which is characterized in that the brush is equipped with groove, the groove packet
Wrap up in the silver-colored main grid of the back of the body.
3. special electroplating device as claimed in claim 2, which is characterized in that the brush is strip shape body.
4. special electroplating device as claimed in claim 2, which is characterized in that the section of the groove is arc.
5. special electroplating device as described in claim 1, which is characterized in that the material of the brush is graphite.
6. special electroplating device as described in claim 1, which is characterized in that the tubular type PERC double-side solar cells include the back of the body
Silver-colored main grid, back of the body alum gate line, back side composite membrane, P-type silicon, N-type emitter, front passivating film and positive electrode, the back side composite membrane,
P-type silicon, N-type emitter, front passivating film and positive electrode stack gradually connection from bottom to up.
7. special electroplating device as described in claim 1, which is characterized in that the LED light is LED green lights.
8. special electroplating device as described in claim 1, which is characterized in that the electroplating bath is horizontally disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721844785.6U CN207904389U (en) | 2017-12-22 | 2017-12-22 | The special electroplating device of tubular type PERC double-side solar cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721844785.6U CN207904389U (en) | 2017-12-22 | 2017-12-22 | The special electroplating device of tubular type PERC double-side solar cells |
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| Publication Number | Publication Date |
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| CN207904389U true CN207904389U (en) | 2018-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721844785.6U Active CN207904389U (en) | 2017-12-22 | 2017-12-22 | The special electroplating device of tubular type PERC double-side solar cells |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114695599A (en) * | 2022-03-28 | 2022-07-01 | 苏州迈为科技股份有限公司 | Method for forming grid line electrode of photovoltaic device and photovoltaic device |
| JP2023133150A (en) * | 2022-03-11 | 2023-09-22 | 浙江愛旭太陽能科技有限公司 | Method for manufacturing solar cell, solar cell module, and power generation system |
-
2017
- 2017-12-22 CN CN201721844785.6U patent/CN207904389U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023133150A (en) * | 2022-03-11 | 2023-09-22 | 浙江愛旭太陽能科技有限公司 | Method for manufacturing solar cell, solar cell module, and power generation system |
| JP7421671B2 (en) | 2022-03-11 | 2024-01-24 | 浙江愛旭太陽能科技有限公司 | Solar cell manufacturing method, solar cell module, and power generation system |
| CN114695599A (en) * | 2022-03-28 | 2022-07-01 | 苏州迈为科技股份有限公司 | Method for forming grid line electrode of photovoltaic device and photovoltaic device |
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