CN211367772U

CN211367772U - Equipment for horizontally electroplating photovoltaic cell

Info

Publication number: CN211367772U
Application number: CN201922134654.4U
Authority: CN
Inventors: 单伶宝
Original assignee: Suzhou Jiedebao Electromechanical Equipment Co ltd
Current assignee: Suzhou Jiedebao Electromechanical Equipment Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-08-28
Anticipated expiration: 2029-12-03

Abstract

The utility model discloses an equipment that photovoltaic cell piece level was electroplated, including the mounting groove, the top of mounting groove sets up positive pole gyro wheel and cathode roller, just the cathode roller is higher than the positive pole gyro wheel, and the clearance between the two supplies the battery piece to pass and can drive the battery piece and remove simultaneously, positive pole gyro wheel and cathode roller alternately interval set up a plurality ofly, and adjacent two interval department between positive pole gyro wheel and the cathode roller sets up the LED lamp, and every the outside of LED lamp sets up the air-cooler, the cold wind of air-cooler blow to the LED lamp, at least one the positive pole gyro wheel sets up in the plating bath, just be provided with the plating solution in the plating bath, contain the ion of copper or nickel or tin in the plating solution. The production cost of the photovoltaic cell is reduced, the problems that the existing silver colloid is expensive and cannot be replaced are solved, and the photovoltaic cell is more civilized.

Description

Equipment for horizontally electroplating photovoltaic cell

Technical Field

The utility model relates to a photovoltaic cell's production facility field especially relates to a compound photovoltaic cell piece (including monocrystalline silicon P type or N type, polycrystalline silicon P type or N type, CIGS (copper, indium, gallium, selenium), TeCd cadmium antimonide etc.) horizontal metal electroplating's equipment.

Background

With the continuous enlargement of the photovoltaic industry scale, the rapid development of the market and the adjustment of related policies, the market has increasingly strict requirements on the price of the photovoltaic cell, so that the complexity of a plurality of processes is reduced, and materials which are convenient to obtain are adopted for use. The existing photovoltaic cell adopts printed silver colloid, the silver colloid accounts for more than 20% of the total cost of producing the photovoltaic cell, obviously, the cheap metal is adopted to replace part of or even all of the silver colloid, and the method has obvious significance in reducing the production cost of the photovoltaic cell.

The use of metals (copper or nickel or tin, etc.) is a good alternative to the expensive silver paste. And because the pure metallization form wire of copper makes the resistivity better than the silver glue, improve the electrical index, and because it can plate the pattern to form with the laser grooving thinner linewidth that causes before electroplating, because its final wire that forms after electroplating is 1/3 to 1/2 less than the linewidth that the original silver glue printed, and then increase the light receiving rate of the battery, raise the efficiency.

Therefore, the inventor of the utility model discloses to replace printing silver glue with the electroplating mode, invent the equipment of photovoltaic cell piece horizontal electroplating, hope can reduce manufacturing cost and improve battery efficiency.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a horizontal electroplating device for photovoltaic cells.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides an equipment that photovoltaic cell piece level was electroplated, includes the mounting groove, the top of mounting groove sets up positive pole gyro wheel and negative pole gyro wheel, just the negative pole gyro wheel is higher than the positive pole gyro wheel, and the clearance between the two supplies the battery piece to pass and can drive the battery piece and remove simultaneously, positive pole gyro wheel and negative pole gyro wheel cross interval set up a plurality ofly, and adjacent two interval department between positive pole gyro wheel and the negative pole gyro wheel sets up the LED lamp, and every the outside of LED lamp sets up the air-cooler, the cold wind of air-cooler blows to the LED lamp, at least one in the positive pole gyro wheel sets up the plating bath, just be provided with the plating solution in the plating bath, contain metal (copper or nickel or tin) ion in the plating solution. The anode roller and the cathode roller are arranged in a crossed manner, namely, the anode and the cathode are arranged at intervals (horizontal direction), the cathode roller is always higher than the anode roller in the vertical direction, and a battery piece is placed in a gap between the anode roller and the cathode roller.

Preferably, the top of the anode roller is higher than the electroplating bath, a liquid inlet is formed in the bottom of the electroplating bath, a backflow plate is arranged in the installation groove, a plurality of backflow holes are formed in the backflow plate, and the height of the backflow plate is lower than that of the electroplating bath. The plating solution gets into the plating bath from the inlet to overflow takes place at the top of plating bath, flows back through the backward flow hole on the board that flows back afterwards, realizes that the closed loop of plating solution flows, and the positive pole gyro wheel is a little higher than the plating bath, guarantees that positive pole gyro wheel and negative pole gyro wheel can drive the battery piece and remove, realizes electroplating simultaneously.

Preferably, a plating solution flow controller is arranged at the position of the liquid inlet of the plating bath. The requirement of meeting and ensuring that the electroplating solution is flushed upwards from the electroplating bath in an uninterrupted manner is met, and the surface of the battery piece passing through the anode is ensured to be uniformly and uninterruptedly contacted with the electroplating solution.

Preferably, the anode roller and the cathode roller are parallel to each other, the anode roller can be made of an insoluble anode as an axis, a porous acid-base-resistant porous soft material is coated outside the axis, and the cathode roller is made of a conductive material. The anode roller is arranged in the electrolytic cell, the transmission rotating shaft of the anode roller is anode metal, the anode metal is made of materials including but not limited to titanium, titanium alloy or insoluble anode, the acid and alkali resistant materials coating the anode metal include but not limited to PP, PE, PVC, PU and other porous soft materials, and the conductive materials include but not limited to titanium metal, stainless steel metal, phosphor copper metal and the like. The porous soft material of the present design can connect the anode and the plated object due to the internal through hole, so as to facilitate the ion exchange of the plating solution.

The other anode roller is made of acid and alkali resistant non-conductive material, but an insoluble anode is additionally arranged below the roller and fixed in a liquid medicine box of the electroplating bath and does not rotate along with the roller.

Preferably, the anode roller and the cathode roller are both arranged at the top of the mounting groove through a transmission shaft, and a transmission gear is arranged at the end part of the transmission shaft, and the transmission gear is directly or indirectly meshed with the driving gear and driven by the driving gear. The movement of the cathode roller and the anode roller is realized through the action of the driving gear and the transmission gear.

Preferably, the mounting groove is further provided with a plurality of transmission rollers, the transmission rollers are as high as the anode roller, one transmission roller is arranged below each cathode roller, and the transmission gear at the end of each transmission roller is meshed with the transmission gear of each cathode roller and driven by the driving gear. The battery piece is firstly placed on the separately arranged transmission roller and drives the battery piece to move until contacting with one cathode roller or one anode roller, the battery piece continues to move, simultaneously contacts with the cathode roller and the anode roller, the electroplating is finished, and after the electroplating, the battery piece is transmitted by the other transmission rollers and the collection is finished.

Preferably, the cathode rollers and the transmission rollers in the same vertical direction are arranged in a staggered mode. The two rollers arranged in a staggered manner are used for better avoiding that the rollers at the upper position and the lower position are mutually wetted with liquid medicine, effectively ensuring the dryness of the back of the cell piece, keeping the cathode dry in the middle and ensuring that the back of the cell and the cathode are not wetted, and further ensuring that the cathode pollutes the back of the cell due to the contamination of the plating solution and the cathode generates a self-plating phenomenon due to the contamination of the plating solution during mass production.

Preferably, the anode roller and the transmission roller are directly driven by a driving gear, the cathode roller is indirectly driven by the driving gear through the transmission roller, the plurality of driving gears are sleeved on the same gear transmission rod, the anode roller, the transmission roller and the cathode roller are parallel to each other, and the anode roller is perpendicular to the gear transmission rod. The gear transmission rod is arranged on the same side of the anode roller, the cathode roller and the transmission roller which are parallel to each other, the transmission gear is driven by the driving gear to rotate, and the teeth are obliquely arranged due to the meshing of the gears which are vertical to each other.

The utility model relates to an equipment that photovoltaic cell piece level was electroplated (applicable in monocrystalline silicon P type or N type, polycrystalline silicon P type or N type, CIGS (copper, indium, gallium, selenium), TeCd cadmium antimonide etc.), its beneficial effect is with metals such as copper facing, nickel substitute printing silver glue, has reduced photovoltaic cell piece's manufacturing cost, solves the cost burden that current silver glue price is expensive and silver cost increases year by year, and then lets photovoltaic power generation become following main clean energy.

Drawings

Fig. 1 is a schematic structural diagram of the whole device for horizontally electroplating the photovoltaic cell.

Fig. 2 is a top view of fig. 1.

FIG. 3 is a schematic structural view of a plating part.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a front view of fig. 4.

In the figure:

1-mounting a groove; 2-anode roller; 3-cathode roller; 4-a battery piece; 5-LED lamps; 6-electroplating bath; 7-a reflow plate; 8-a transmission shaft; 9-a transmission gear; 10-a drive gear; 11-a drive roller; 12-a gear transmission rod;

61-liquid inlet; 71-refluxing pore.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

If high-temperature copper adhesive is generally used to replace silver adhesive, copper ions are easy to diffuse at high temperature, so that the service life of a cell is shortened, and the method is not suitable for photovoltaic cell production. Generally, in the production process of photovoltaic cells, there are two methods for depositing metal on the surface of the photovoltaic cell under low temperature conditions to form the electrode of the photovoltaic cell: low temperature physical or chemical metal deposition methods.

The low-temperature physical metal deposition method adopts sputtering and other methods. The disadvantage of the low-temperature physical metal deposition method is that selective metal deposition cannot be carried out, a mask technology is required, expensive equipment is required to be purchased, the production cost is increased, and the starting point of cost reduction is deviated.

The method of chemically depositing the metal is an electroplating process. Compared with the process of physical deposition of metal, the electroplating process not only has simple process, but also has the advantage of being capable of selectively depositing metal. Therefore, the production cost of the electroplating process can be controlled to be low, so that the cost of producing the photovoltaic cell can be greatly reduced. Therefore, the use of electroplating process to deposit metal on the photovoltaic cell is a very active area of technology development, and can reduce the production cost of the photovoltaic cell.

Referring to the attached drawings 1-5, the apparatus for horizontal electroplating of photovoltaic cells in the present embodiment includes a mounting groove 1, an anode roller 2 and a cathode roller 3 are disposed on the top of the mounting groove 1, and the cathode roller 3 is higher than the anode roller 2, and a gap between the anode roller 2 and the cathode roller 3 is used for a cell 4 to pass through and can drive the cell 4 to move, the anode roller 2 and the cathode roller 3 are alternately disposed in a plurality, and an LED lamp 5 (capable of performing light-induced electroplating) is disposed at a gap between two adjacent anode rollers 2 and cathode rollers 3, and an air cooler is disposed outside each LED lamp 5, and cool air of the air cooler blows towards the LED lamp 5, at least one anode roller 2 is disposed in an electroplating bath 6, and an electroplating bath 6 is disposed therein, and the electroplating bath contains copper ions, nickel ions, or tin ions. The anode roller 2 and the cathode roller 3 are arranged in a crossed manner, namely, the anode roller and the cathode roller are arranged at an interval (horizontal direction) of one anode and one cathode, and meanwhile, the cathode roller 3 is always higher than the anode roller 2 in the vertical direction, and a battery piece 4 is arranged in a gap between the anode roller and the cathode roller.

Referring to the attached drawings 1-2, the top of the anode roller 2 is higher than the electroplating bath 6, a liquid inlet 61 is arranged at the bottom of the electroplating bath 6, a reflux plate 7 is arranged in the mounting groove 1, a plurality of reflux holes 71 are arranged on the reflux plate 7, and the height of the reflux plate 7 is lower than that of the electroplating bath 6. The plating solution gets into plating bath 6 from inlet 61 to overflow takes place at the top of plating bath 6, flows back through backward flow hole 71 on the board 7 that flows back afterwards, realizes that the closed loop of plating solution flows, and anode roller 2 is a little higher than plating bath 6, guarantees that anode roller 2 and cathode roller 3 can drive battery piece 4 and remove, realizes electroplating simultaneously.

A plating solution flow controller (not shown in the drawing) is provided at the position of the liquid inlet 61 of the plating tank 6. The requirement of meeting and ensuring that the electroplating solution is flushed upwards from the electroplating bath 6 in an uninterrupted manner ensures that the surface of the battery piece passing through the anode is uniformly and uninterruptedly contacted with the electroplating solution.

Referring to fig. 1-3, the anode roller 2 and the cathode roller 3 are parallel to each other, the anode roller 2 is made of acid-base resistant material, and the cathode roller 3 is made of conductive material. The anode roller 2 is arranged in the electrolytic bath, the transmission rotating shaft of the anode roller 2 is anode metal or an insoluble anode is independently arranged and inserted into the electrolytic bath, the anode metal material comprises but is not limited to titanium, titanium alloy or the insoluble anode, the acid-base resistant material comprises but is not limited to PP, PE, PVC, PU and the like, and the conductive material comprises but is not limited to titanium metal, stainless steel metal, phosphor copper metal and the like.

Referring to fig. 3, the anode roller 2 and the cathode roller 3 are both arranged on the top of the mounting groove 1 through a transmission shaft 8, and a transmission gear 9 is arranged at the end of the transmission shaft 8, and the transmission gear 9 is directly or indirectly engaged with a driving gear 10 and driven by the driving gear 10. The movement of the cathode roller 3 and the anode roller 2 is realized by the action of the driving gear 10 and the transmission gear 9.

Referring to the attached drawings 1-3, the installation groove 1 is further provided with a plurality of transmission rollers 11, the transmission rollers 11 are as high as the anode rollers 2, one transmission roller 11 is arranged below each cathode roller 3, and the transmission gear 9 at the end of each transmission roller 11 is meshed with the transmission gear 9 of the cathode roller 3 and driven by the driving gear 10. The battery piece 4 is firstly placed on the separately arranged transmission roller 11, and the battery piece 4 is driven to move until contacting with one cathode roller 3 or one anode roller 2, the battery piece continues to move, simultaneously contacts with the cathode roller 3 and the anode roller 2, the electroplating is completed, and after the electroplating, the battery piece is driven by the other transmission rollers 11 and the collection is completed.

Referring to fig. 5, the cathode rollers 3 and the transmission rollers 11 in the same vertical direction are arranged in a staggered manner. Two gyro wheels of dislocation set up, in order to better avoid the gyro wheel of upper and lower position to wet liquid medicine mutually, the effectual aridity that guarantees the 4 backs of battery piece because of the centre keeps the drying of negative pole and guarantees that the back of battery and negative pole do not have the problem of being wet, and then guarantees that the negative pole produces the self-plating phenomenon because of being stained with the plating solution and polluting the battery back and negative pole itself because of being stained with the plating solution when putting into large quantities.

Referring to fig. 3-5, the anode roller 2 and the transmission roller 11 are directly driven by the driving gear 10, the cathode roller 3 is indirectly driven by the driving gear 10 through the transmission roller 11, meanwhile, the plurality of driving gears 10 are all sleeved on the same gear transmission rod 12, the anode roller 2, the transmission roller 11 and the cathode roller 3 are parallel to each other, and the anode roller 2 is perpendicular to the gear transmission rod 12. The gear transmission rod 12 is arranged on the same side of the anode roller 2, the cathode roller 3 and the transmission roller 11 which are parallel to each other, the gear transmission rod 12 is driven by a motor, and the transmission gear 9 is driven by the driving gear 10 to rotate, and because the gears which are vertical to each other are meshed, the teeth are obliquely arranged and are all sleeved on one transmission shaft 8.

The utility model provides an equipment of photovoltaic cell piece level electroplating which has the beneficial effect is, replaces silver with copper, nickel, tin etc. has reduced photovoltaic cell piece's manufacturing cost, solves current silver glue high price and can't replace the problem, for let photovoltaic cell piece more civilization.

The basic using steps of the device for horizontally electroplating the photovoltaic cell slice are,

firstly, assembling equipment according to the above description, starting a driving gear 10, directly or indirectly driving an anode roller 2, a cathode roller 3 and a transmission roller 11 to rotate, simultaneously opening a liquid inlet 61 of an electroplating bath 6 to enable electroplating solution to overflow in the electroplating bath 6 and to flow back through a backflow hole 71 on a backflow plate 7, so as to realize circulation of the electroplating solution, and further starting an LED lamp (capable of performing light-induced electroplating) 5 and an air cooler (so far, preparation work is basically finished);

secondly, the unprocessed battery piece 4 is placed on the transmission roller 11, the transmission roller 11 drives the battery piece 4 to move until the battery piece 4 contacts one cathode roller 3 or one anode roller 2, and simultaneously, the battery piece continues to move until the battery piece simultaneously contacts the cathode roller 3 and the anode roller 2, and as the anode roller 2 is immersed in the electroplating solution (meanwhile, the electroplating solution in the electroplating bath 6 overflows), the battery piece 4 can be plated with copper, nickel, tin and the like on the surface of the battery piece 4 (namely the lower surface of the battery piece 4), and after the electroplating is finished, the battery piece 4 after the electroplating is finished is continuously driven by the transmission roller 11 to be collected. The horizontal electroplating of the photovoltaic cell is completed, and the silver is replaced by copper, nickel or tin and the like, so that the production cost is reduced.

The basic principle of the equipment for horizontally electroplating the photovoltaic cell slice is as follows:

firstly, a power supply is needed, the anode of the power supply is connected with an insoluble anode, the insoluble anode is directly connected with electroplating solution, or the transmission shaft 8 of the anode roller 2 is directly used as the insoluble anode, or the anode roller 2 is used as the insoluble anode, and the cathode is connected with the cathode roller 3 (the cathode roller 3 is conductive);

secondly, the battery piece 4 is a PN junction semiconductor, and after being irradiated, the front and back surfaces are conducted, when the battery piece 4 moves to a position between the anode roller 2 and the cathode roller 3, since the electrode on the cell 4 is the conductivity of the conductive back electrode (commonly called back electrode or back aluminum field) sintered in advance, and the overflow of the plating solution, a complete plating path is formed, when the cell 4 is in the cathode part of the plating process, the copper or nickel or tin ions in the plating solution can obtain two electrons to become copper or nickel or tin, and deposit on the surface of the cell 4 (deposit on the lower surface of the cell 4), namely, the deposition of copper, nickel or tin and the like on the surface of the cell 4 is completed, and the electroplating of the photovoltaic cell is realized, and the horizontal electroplating in the patent name refers to the realization by means of the combination of the anode roller 2, the cathode roller 3 and the transmission roller 11 which are parallel and horizontally arranged.

Wherein, LED lamp 5's design purpose is that LED lamp 5 can open the PN junction or the colloquial light induction of battery piece 4, and LED lamp 5 outside can increase the air-cooler simultaneously, and the air-cooler directly helps LED lamp 5 to cool down.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides an equipment of photovoltaic cell piece level electroplating which characterized in that: including mounting groove (1), the top of mounting groove (1) sets up positive pole gyro wheel (2) and negative pole gyro wheel (3), just negative pole gyro wheel (3) are higher than positive pole gyro wheel (2), and the clearance between the two supplies battery piece (4) to pass and can drive battery piece (4) and remove simultaneously, positive pole gyro wheel (2) and negative pole gyro wheel (3) cross interval set up a plurality ofly, and adjacent two interval department between positive pole gyro wheel (2) and negative pole gyro wheel (3) sets up LED lamp (5), and is every the outside of LED lamp (5) sets up the air-cooler, the cold wind of air-cooler blows to LED lamp (5), at least one in positive pole gyro wheel (2) set up plating bath (6), just be provided with the plating solution in plating bath (6), just contain metal ion in the plating solution.

2. The device for horizontally electroplating the photovoltaic cell slice according to claim 1, wherein: the top of the anode roller (2) is higher than the electroplating bath (6), a liquid inlet (61) is arranged at the bottom of the electroplating bath (6), a reflux plate (7) is arranged in the mounting groove (1), a plurality of reflux holes (71) are formed in the reflux plate (7), and the height of the reflux plate (7) is lower than that of the electroplating bath (6).

3. The device for horizontally electroplating the photovoltaic cell slice according to claim 2, wherein: a plating solution flow controller is arranged at the position of the liquid inlet (61) of the plating bath (6).

4. The device for horizontally electroplating the photovoltaic cell slice according to claim 1, wherein: the anode roller (2) and the cathode roller (3) are parallel to each other, the anode roller (2) is made of acid and alkali resistant materials, and the cathode roller (3) is made of conductive materials.

5. The device for horizontally electroplating the photovoltaic cell slice according to claim 1, wherein: the anode roller (2) and the cathode roller (3) are arranged at the top of the mounting groove (1) through a transmission shaft (8), a transmission gear (9) is arranged at the end part of the transmission shaft (8), and the transmission gear (9) is directly or indirectly meshed with a driving gear (10) and driven by the driving gear (10).

6. The device for horizontally electroplating the photovoltaic cell slice according to claim 1, wherein: still be provided with drive roller (11) on mounting groove (1), drive roller (11) set up a plurality ofly, just drive roller (11) are the same with the height of positive pole gyro wheel (2), every simultaneously the below of negative pole gyro wheel (3) all sets up one drive roller (11), just drive gear (9) of the tip of drive roller (11) and drive gear (9) meshing of negative pole gyro wheel (3) to by drive gear (10) drive.

7. The device for horizontally electroplating the photovoltaic cell slice according to claim 6, wherein: the cathode rollers (3) and the transmission rollers (11) in the same vertical direction are arranged in a staggered mode.

8. The device for horizontally electroplating the photovoltaic cell slice according to claim 6, wherein: anode roller (2) and drive roller (11) are by drive gear (10) direct drive, it is simultaneously a plurality of cathode roller (3) are through drive roller (11) and by drive gear (10) indirect drive gear (10) all overlap and are established on same gear drive pole (12), just be parallel to each other between anode roller (2), drive roller (11) and cathode roller (3), simultaneously anode roller (2) are perpendicular with gear drive pole (12).

9. The device for horizontally electroplating the photovoltaic cell slice according to claim 1, wherein: the metal ions are copper ions, nickel ions or tin ions.