CN113930831A - Horizontal electroplating equipment and method for photovoltaic cell - Google Patents
Horizontal electroplating equipment and method for photovoltaic cell Download PDFInfo
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- CN113930831A CN113930831A CN202111269592.3A CN202111269592A CN113930831A CN 113930831 A CN113930831 A CN 113930831A CN 202111269592 A CN202111269592 A CN 202111269592A CN 113930831 A CN113930831 A CN 113930831A
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/02—Tanks; Installations therefor
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/001—Apparatus specially adapted for electrolytic coating of wafers, e.g. semiconductors or solar cells
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/12—Process control or regulation
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Abstract
The invention is suitable for the technical field of photovoltaic cell electroplating, and provides a photovoltaic cell horizontal electroplating device and a method, wherein the photovoltaic cell horizontal electroplating device comprises: the electroplating bath is internally provided with electroplating liquid and is provided with an inlet and an outlet opposite to the inlet; an anode member disposed in the plating bath and below a liquid level of the plating solution; the battery piece moving mechanism is used for driving the battery piece to move from the inlet to the outlet so as to enable the battery piece to move relative to the anode piece in the electroplating solution to realize electroplating; the cathode conductive assembly comprises a rotary motion part and a plurality of cathode conductive probes arranged on the rotary motion part, and the rotary motion part can drive the plurality of cathode conductive probes to synchronously rotate so that at least one cathode conductive probe is in contact with the battery piece and keeps synchronous motion with the battery piece. The photovoltaic cell horizontal electroplating equipment provided by the invention can effectively improve the coating quality of the photovoltaic cell and greatly reduce the overall length size of the photovoltaic cell horizontal electroplating equipment.
Description
Technical Field
The invention relates to the technical field of photovoltaic cell electroplating, in particular to a photovoltaic cell horizontal electroplating device and method.
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 solar cell is generally printed with silver paste, and the silver paste accounts for more than 25% of the total cost of producing the solar cell, so that how to replace the silver paste is a key point. At present, many enterprises replace printing silver paste by adopting a copper electroplating mode, and the basic principle is that a battery piece sequentially passes through a cathode assembly and an anode assembly, and the anode assembly is electrified and electroplated.
Among the prior art, photovoltaic cell piece horizontal electroplating equipment includes a plurality of electroplating districts and a plurality of conducting region that set gradually along the horizontal direction usually, and electroplate district and conducting region and set gradually in turn and set up, and every electroplating district is equipped with the anode assembly who links to each other with the power positive pole including placing the plating bath of plating solution in the plating solution of plating bath, and the conducting region includes the cathode assembly who links to each other with the power negative pole. When the photovoltaic cell piece is electroplated, the photovoltaic cell piece horizontal electroplating equipment sequentially passes through a plurality of electroplating areas and a plurality of conductive areas, the cell piece simultaneously passes through one electroplating area and one conductive area, the cathode assembly is contacted with the cell piece, the cell piece is communicated with the anode assembly through electroplating liquid, so that the cathode assembly and the anode assembly form a closed loop, and at the moment, an electroplating principle is utilized to deposit a coating on the surface of the cell piece. However, since the cell can be electroplated only by sequentially passing through the plurality of electroplating regions and the plurality of conductive regions, the utilization rate of the effective region of the horizontal electroplating equipment for the photovoltaic cell is low, and the overall size of the product is long; in addition, because a part of the battery piece is exposed in the air without being soaked in the electroplating solution of the electroplating bath all the time in the electroplating process of the battery piece, the oxidation of the coating of the battery piece is easy to cause, and the quality of the coating of the photovoltaic battery piece is poor.
Disclosure of Invention
The invention provides a photovoltaic cell horizontal electroplating device, and aims to solve the problems that the photovoltaic cell horizontal electroplating device in the prior art is long in product size and poor in photovoltaic cell coating quality.
The invention is realized in this way, and provides a photovoltaic cell horizontal electroplating device, which comprises:
the electroplating bath is filled with electroplating solution, one end of the electroplating bath is provided with an inlet, and the other end of the electroplating bath is provided with an outlet opposite to the inlet;
an anode member disposed within the plating bath and below a liquid level of the plating solution;
the battery piece moving mechanism is arranged in the electroplating bath and used for driving the battery piece to move from the inlet to the outlet so as to enable the battery piece to move in the electroplating solution relative to the anode piece to realize electroplating;
the cathode conductive assembly arranged in the electroplating bath comprises a rotary motion piece driven by a driving device to rotate and a plurality of cathode conductive probes arranged on the rotary motion piece, wherein the rotary motion piece can drive the plurality of cathode conductive probes to synchronously rotate so that at least one cathode conductive probe is in contact with the battery piece and keeps synchronous motion with the battery piece.
Preferably, the rotary motion member is a chain or a belt, and a plurality of the cathode conductive probes are annularly arrayed on the chain or the belt; the driving device comprises a first power device and a driving wheel connected with the first power device, and the driving wheel is matched with the rotary moving piece to drive the rotary moving piece to rotate.
Preferably, the chain or the belt is arranged along a vertical direction, and the plurality of cathode conductive probes are perpendicular to the outer circumferential surface of the chain or the belt, so that part of the cathode conductive probes face the direction of the battery piece.
Preferably, the chain or the belt is horizontally laid, and the plurality of cathode conductive probes are simultaneously perpendicular to the chain or the belt and face the direction of the battery piece.
Preferably, a plurality of the cathode conductive probes are sequentially fixed on the rotary motion member at equal intervals.
Preferably, the outer surface of the cathode conductive probe is coated with an insulating glue, and one end of the cathode conductive probe, which is in contact with the battery piece, is exposed.
Preferably, the battery piece moving mechanism includes:
a second power unit;
a sprocket or pulley connected to the second power means;
and the conveying chain or the conveying belt is correspondingly matched with the chain wheel or the belt wheel and is used for driving the battery piece to move from the inlet to the outlet.
Preferably, the method further comprises the following steps:
the two first rollers are arranged on the electroplating bath and positioned at the inlet, the two first rollers are oppositely arranged up and down, at least one first roller is movably arranged on the electroplating bath and can move up and down, so that the two first rollers are mutually far away to open the inlet or mutually approach to seal the inlet, and the battery piece can enter the electroplating bath from the space between the two first rollers.
Preferably, the method further comprises the following steps:
the two second rollers are arranged on the electroplating bath and located at the outlet, the two second rollers are oppositely arranged up and down, at least one of the second rollers is movably arranged on the electroplating bath and can move up and down, so that the two second rollers are far away from each other to open the outlet or the two second rollers are close to each other to seal the outlet, and the battery piece can be moved out of the electroplating bath from between the two second rollers.
The invention also provides a method for electroplating the photovoltaic cell by using the horizontal electroplating equipment for the photovoltaic cell, which comprises the following steps:
the battery piece moving mechanism drives the battery piece to move from the inlet to the outlet so that the battery piece enters the electroplating bath and moves relative to the anode piece in the electroplating solution;
the rotary moving part drives a plurality of cathode conductive probes to synchronously rotate, wherein at least one cathode conductive probe is in contact with the cell piece and keeps synchronous motion with the cell piece, so that the cathode conductive probe and the anode piece form a closed loop to carry out electroplating on the surface of the cell piece;
the battery piece moving mechanism drives the battery piece which is electroplated to move out of the outlet.
According to the horizontal electroplating equipment for the photovoltaic cell, the electroplating bath is provided with the cathode conductive assembly and the anode piece, the electroplating bath is provided with the cell piece moving mechanism, the cathode conductive assembly comprises the rotary moving piece and the plurality of cathode conductive probes arranged on the rotary moving piece, and the rotary moving piece can drive the plurality of cathode conductive probes to synchronously rotate so that at least one cathode conductive probe is in contact with the cell piece and keeps synchronous motion with the cell piece. When the cell moving mechanism drives the cell to move in the electroplating bath and carry out electroplating, the cathode conductive probe is always in contact with the cell, so that the cathode conductive probe and the anode piece always form a closed loop, the whole cell is continuously electroplated in the electroplating solution, and the electroplating efficiency is greatly improved; in addition, during the electroplating movement of the cell, the cell is always soaked in the electroplating solution, so that the coating is prevented from being oxidized by air, the stable secondary current distribution on the surface of the cell can be maintained, the uniformity of the coating of the cell is improved, and the problem of rough edge of the cell can be avoided, so that the coating quality of the photovoltaic cell is effectively improved; in addition, the electroplating of the cell can be completed at one time by utilizing one electroplating bath, the utilization rate of an electroplating area can be improved, the overall length size of the horizontal electroplating equipment of the photovoltaic cell is greatly reduced, and the reduction of the production cost and the reduction of the occupied space of the horizontal electroplating equipment of the photovoltaic cell are facilitated.
Drawings
Fig. 1 is a schematic front view of a horizontal electroplating apparatus for a photovoltaic cell provided in an embodiment of the present invention;
fig. 2 is a schematic side view of a horizontal electroplating apparatus for photovoltaic cells according to an embodiment of the present invention;
fig. 3 is a schematic front view of another photovoltaic cell horizontal electroplating apparatus according to an embodiment of the present invention;
fig. 4 is a schematic side view of the photovoltaic cell horizontal electroplating apparatus shown in fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
According to the horizontal electroplating equipment for the photovoltaic cell piece, provided by the embodiment of the invention, the cathode conductive assembly, the anode piece and the cell piece moving mechanism are arranged on the electroplating bath, the cathode conductive assembly comprises the rotary moving piece and the plurality of cathode conductive probes arranged on the rotary moving piece, and the rotary moving piece can drive the plurality of cathode conductive probes to rotate so that at least one cathode conductive probe is in contact with the cell piece and keeps synchronous motion with the cell piece. When the cell piece moves in the plating bath and is plated, the cathode conductive probe is always in contact with the cell piece, so that the cathode conductive probe and the anode piece always form a closed loop, the whole cell piece is continuously plated in the plating solution, and the plating efficiency is greatly improved; in addition, during the electroplating movement of the cell, the cell is always soaked in the electroplating solution, so that the coating is prevented from being oxidized by air, the stable secondary current distribution on the surface of the cell can be maintained, the uniformity of the coating of the cell is improved, and the problem of rough edge of the cell can be avoided, so that the coating quality of the photovoltaic cell is effectively improved; in addition, the electroplating of the cell can be completed at one time by utilizing one electroplating bath, the utilization rate of an electroplating area can be improved, the overall length size of the horizontal electroplating equipment of the photovoltaic cell is greatly reduced, and the reduction of the production cost and the reduction of the occupied space of the horizontal electroplating equipment of the photovoltaic cell are facilitated.
Example one
Referring to fig. 1-2, an embodiment of the invention provides a horizontal electroplating apparatus for a photovoltaic cell, including:
the electroplating bath 1 is internally provided with electroplating solution, one end of the electroplating bath 1 is provided with an inlet 11, and the other end of the electroplating bath 1 is provided with an outlet 12 opposite to the inlet 11;
an anode member 2 disposed in the plating tank 1 and below the surface of the plating solution;
the cell moving mechanism 3 is arranged in the electroplating bath 1 and is used for driving the cell 100 to move from the inlet 11 to the outlet 12 so as to enable the cell 100 to move relative to the anode piece 2 in the electroplating solution to realize electroplating;
the cathode conductive assembly 4 disposed in the electroplating tank 1 includes a rotating member 41 driven by a driving device to rotate, and a plurality of cathode conductive probes 42 disposed on the rotating member 41, wherein the rotating member 41 can drive the plurality of cathode conductive probes 42 to rotate synchronously, so that at least one cathode conductive probe 42 contacts the battery piece 100 and keeps moving synchronously with the battery piece 100.
In the embodiment of the invention, the photovoltaic cell horizontal electroplating device comprises two electroplating modules, each electroplating module comprises an anode piece 2, a cell piece moving mechanism 3 and a cathode conducting component 4, and the anode piece 2, the cell piece moving mechanism 3 and the cathode conducting component 4 of each electroplating module are matched with each other to realize electroplating of the cell piece 100, so that the two electroplating modules can be used for electroplating at the same time, and the electroplating efficiency can be greatly improved.
In the embodiment of the present invention, the liquid level of the plating solution in the plating tank 1 is higher than the inlet 11 and the outlet 12, and the cell 100 enters the plating tank 1 from the inlet 11, so that the plating solution can completely cover the cell 100.
In the embodiment of the invention, the anode member 2 is connected with the positive electrode of the power supply and is soaked in the electroplating solution of the electroplating bath 1, the cathode conductive probe 42 is connected with the negative electrode of the power supply, and the part of the cathode conductive probe 42, which is contacted with the battery piece, is soaked in the electroplating solution of the electroplating bath 1. The anode member 2 is disposed above the cell moving mechanism 3, and the cell moving mechanism 3 is configured to drive the cell 100 to move below the anode member 2, so as to form a plating layer on a surface of the cell 100 facing the anode member 2.
As an embodiment of the present invention, the anode member 2 is embodied as an anode titanium mesh.
As an embodiment of the present invention, the cell moving mechanism 3 includes:
a second power unit (not shown);
a sprocket or pulley 32 connected to the second power means;
a transmission chain or belt 33 correspondingly engaged with the sprocket or pulley 32 for moving the battery piece 100 from the inlet 11 to the outlet 12.
In this embodiment, the second power device may be a motor, and the sprocket or the pulley 32 is rotatably disposed on the sidewall of the electroplating bath 1 and connected to the second power device. The second power device drives the chain wheel or belt wheel 32 to rotate, and the chain wheel or belt wheel 32 drives the conveying chain or belt 33 to move, so that the battery pieces 100 on the conveying chain or belt 33 move from the inlet 11 to the outlet 12, the battery pieces 100 are subjected to moving electroplating in the electroplating solution, and the electroplated battery pieces 100 are moved out from the outlet 12.
As an embodiment of the present invention, the photovoltaic cell horizontal electroplating apparatus further includes:
two first rollers 5 arranged in the electroplating bath 1 and located at the inlet 11, wherein the two first rollers 5 are arranged oppositely up and down, at least one first roller 5 is movably arranged in the electroplating bath 1 and can move up and down, so that the two first rollers 5 are far away from each other to open the inlet 11 or the two first rollers 5 are close to each other to seal the inlet 11, and the battery piece 100 can enter the electroplating bath 1 from between the two first rollers 5.
As an embodiment of the present invention, the photovoltaic cell horizontal electroplating apparatus further includes: two second rollers 6 are arranged in the electroplating bath 1 and located at the position of the outlet 12, the two second rollers 6 are arranged oppositely up and down, at least one second roller 6 is movably arranged in the electroplating bath 1 and can move up and down, so that the two second rollers 6 are far away from each other to open the outlet 12 or the two second rollers 6 are close to each other to seal the outlet 12, and the battery piece 100 can be moved out of the electroplating bath 1 from between the two second rollers 6.
In this embodiment, the two first rollers 5 and the two second rollers 6 may be disposed inside the electroplating bath 1 or outside the electroplating bath 1. Preferably, two first rollers 5 and two second rollers 6 are simultaneously arranged inside the plating tank 1.
In this embodiment, when the cell moving mechanism 3 drives the cell 100 to enter the electroplating tank 1 from the inlet 11, the cell 100 enters from the inlet 11 and pushes the two first rollers 5 to move away from each other to open the inlet 11, so that the cell 100 smoothly enters the electroplating tank 1. After the cell 100 is completely inserted into the plating tank 1, the two first rollers 5 are moved closer to each other to seal the inlet 11, thereby preventing the plating solution in the plating tank 1 from flowing out through the inlet 11. On one hand, the two first rollers 5 are used for guiding the battery piece 100 to enter the electroplating bath 1, so that the battery piece 100 can smoothly enter the electroplating bath 1; on the other hand, the two first rollers 5 serve to seal the inlet 11, thereby preventing the plating solution from flowing out of the inlet 11 and preventing the plating solution in the plating vessel 1 from flowing out.
In this embodiment, after the electroplating of the battery piece 100 is completed, when the battery piece moving mechanism 3 drives the battery piece 100 to move out of the electroplating tank 1 from the inside of the electroplating tank 1, the battery piece 100 pushes the two second rollers 6 to move away from each other, and the battery piece 100 passes through between the two second rollers 6 and moves out of the outlet 12 to the outside of the electroplating tank 1. After the cell piece 100 is completely removed from the plating tank 1, the two second rollers 6 are brought close to each other to seal the outlet 12, thereby preventing the plating solution in the plating tank 1 from flowing out of the outlet 12. On one hand, the two second rollers 6 are used for guiding the battery piece 100 to move out of the electroplating bath 1 from the inside of the electroplating bath 1, so that the battery piece 100 can be smoothly moved out; on the other hand, the two second rollers 6 serve to seal the outlet 12 and prevent the plating solution from flowing out of the outlet 12.
In one embodiment of the present invention, the first roller 5 located at the upper portion of the two first rollers 5 is movably disposed in the plating tank 1, and the first roller 5 located at the lower portion is fixedly disposed in the plating tank 1. When the cell 100 enters the interior of the plating tank 1 from the inlet 11, the cell 100 enters from the inlet 11 and pushes the upper first roller 5 to move upward, so that the two first rollers 5 move away from each other to open the inlet 11. After the battery piece 100 enters the electroplating bath 1, the upper first roller 5 moves downwards under the action of self gravity, so that the two first rollers 5 approach each other to seal the inlet 11.
In another embodiment, the two first rollers 5 may also be movably disposed in the electroplating tank 1 at the same time, and the two first rollers 5 are connected to the electroplating tank 1 through a spring respectively. When the battery piece 100 enters the electroplating bath 1 from the inlet 11, the battery piece 100 simultaneously pushes the two first rollers 5 to be away from each other and compress the spring, after the battery piece 100 enters the electroplating bath 1, the two first rollers 5 are close to the sealed inlet 11 under the action of the spring, the two first rollers 5 utilize the spring force, so that the two first rollers 5 can be in close contact with each other, and the sealing effect of the inlet 11 is better.
In an embodiment of the present invention, of the two second rollers 6, the second roller 6 positioned at the upper side is movably disposed in the plating tank 1, and the second roller 6 positioned at the lower side is fixedly disposed in the plating tank 1. After the battery piece 100 is electroplated, the battery piece moving mechanism 3 drives the battery piece 100 to move out of the electroplating bath 1 from the electroplating bath 1, the battery piece 100 pushes the second roller 6 above to move upwards, so that the two second rollers 6 are away from each other to open the outlet 12, after the battery piece 100 is completely moved out of the electroplating bath 1, the second roller 6 above moves downwards under the action of self gravity, so that the two second rollers 6 are close to each other to seal the outlet 12, the structure is simple, and the implementation cost is low.
In another embodiment, two second rollers 6 may also be movably disposed in the electroplating tank 1 at the same time, and the two second rollers 6 are connected to the electroplating tank 1 through a spring respectively. When the battery piece 100 is moved out of the electroplating bath 1 from the inside of the electroplating bath 1 to the outside of the electroplating bath 1, the battery piece 100 simultaneously pushes the two second rollers 6 to be away from each other and compress the spring, after the battery piece 100 is completely moved out of the electroplating bath 1, the two second rollers 6 are close to the sealed outlet 12 under the action of the spring, and the two second rollers 6 can be in close contact with each other by the spring force, so that the sealing effect of the outlet 12 is better.
As an embodiment of the present invention, the rotary motion member 41 is a chain or a belt, and the plurality of cathode conductive probes 42 are arranged in an annular array on the chain or the belt; the driving device includes a first power device (not shown), and a driving wheel 401 connected to the first power device, wherein the driving wheel 401 is engaged with the rotating member 41 to drive the rotating member 41 to rotate.
In this embodiment, when the rotary motion member 41 is a chain, the transmission wheel 401 is a sprocket; when the rotary motion member 41 is a belt, the transmission wheel 401 is a pulley. The cathode conductive probes 42 are fixed by chains or belts, and the chains or belts have a long-section plane structure, so that a plurality of cathode conductive probes 42 are simultaneously kept in contact with the battery piece 100, and the electrical contact between the cathode conductive probes 42 and the battery piece 100 is more stable.
In this embodiment, the first power device may be a motor, and the driving wheel 401 is rotatably disposed on the sidewall of the electroplating bath 1 and connected to the first power device. The first power device drives the transmission wheel 401 to rotate, and the transmission wheel 401 drives the chain or the belt to rotate, so that the cathode conductive probes 42 on the chain or the belt rotate simultaneously. During the rotation of the cathode conductive probes 42, the cathode conductive probes 42 and the cell piece 100 keep the same moving speed, so that at least one cathode conductive probe 42 is always in contact with the cell piece 100 and synchronously moves forward with the cell piece 100, the cell piece 100 is always in electrical contact with the cathode conductive probe 42 during the electroplating movement, the cathode conductive probe 42 and the anode member 2 form a closed loop, and the continuous electroplating of the whole cell piece 100 in the electroplating solution is realized.
The number of the cathode conductive probes 42 is not limited, and the more densely the cathode conductive probes 42 are arranged, the more the cathode conductive probes 42 are in contact with the cell 100 during the electroplating process of the cell, so that the electrical contact performance is better. Among them, the cathode conductive probes 42 shown in fig. 1 are provided in the number of 32, and 13 cathode conductive probes 42 are simultaneously in contact with the battery cell 100 in the state shown in fig. 1.
As a preferred embodiment of the present invention, a plurality of cathode conductive probes 42 are sequentially fixed on the rotary moving member 41 at equal intervals, so that the plurality of cathode conductive probes 42 are uniformly distributed on the rotary moving member 41.
As an embodiment of the present invention, the chain or belt is arranged in a vertical direction, and the plurality of cathode conductive probes 42 are perpendicular to the outer circumferential surface of the chain or belt such that a portion of the cathode conductive probes 42 face the battery cells 100.
In this embodiment, the rotation axis of the driving wheel 401 is parallel to the horizontal direction, so that the driving wheel 401 drives the chain or the belt to rotate on the vertical plane. During the rotation of the chain or belt, the cathode conductive probe 42 facing the battery piece 100 contacts the battery piece 100 and moves forward synchronously with the battery piece 100, so that the battery piece 100 is always in electrical contact with the cathode conductive probe 42 during the electroplating movement.
Referring to fig. 3 and 4, as another embodiment of the present invention, a chain or a belt may be laid horizontally, and a plurality of cathode conductive probes 42 are perpendicular to the chain or the belt and face the battery cells 100.
In this embodiment, the rotation axis of the driving wheel 401 is perpendicular to the horizontal direction, so that the driving wheel 401 drives the chain or the belt to rotate on the horizontal plane. During the rotation of the chain or belt, the cathode conductive probes 42 on both sides of the chain or belt can be simultaneously contacted with the battery pieces 100, so that the cathode conductive probes 42 are more stably electrically contacted with the battery pieces 100.
As another embodiment of the present invention, the rotating member 41 may also be a roller, a plurality of cathode conductive probes 42 are arranged on the outer circumferential surface of the roller in a circular array, and the driving device directly or indirectly drives the roller to rotate. The rotating shaft of the roller can be vertical to the horizontal direction and can also be parallel to the horizontal direction.
In this embodiment, the driving device drives the roller to rotate, so that the cathode conductive probes 42 on the roller rotate around the rotation axis of the roller at the same time. During the rotation process of the cathode conductive probes 42, at least one cathode conductive probe 42 is always in contact with the cell piece 100 and keeps moving forward synchronously with the cell piece 100, so that the cell piece 100 is always in electrical contact with the cathode conductive probe 42 during the electroplating movement, a closed loop is formed by the cathode conductive probe 42 and the anode member 2, and the continuous electroplating of the whole cell piece 100 in the electroplating solution is realized.
As an embodiment of the present invention, the plating tank 1 is further provided with a cleaning chamber (not shown) located at one side of the rotary moving member 41 for cleaning the cathode conductive probe 42, a stripping solution is disposed in the cleaning chamber, and the rotary moving member 41 can drive the cathode conductive probe 42 to move into the cleaning chamber for cleaning. The stripping solution may be nitric acid, sulfuric acid, or hydrogen peroxide, and the stripping solution is used to strip a small amount of electroplated copper on the surface of the cathode conductive probe 42 during the electroplating process, so as to avoid affecting the contact between the cathode conductive probe 42 and the cell 100.
As an embodiment of the present invention, the outer surface of the cathode conductive probe 42 is coated with an insulating adhesive, and one end of the cathode conductive probe 42 contacting the battery piece 100 is exposed, so that only the position where the cathode conductive probe 42 contacts the battery piece 100 is exposed, thereby preventing electroplating at other positions of the cathode conductive probe 42.
As an example of the present invention, the insulating glue may be teflon, PVC or other non-conductive encapsulation.
As an embodiment of the present invention, the cathode conductive probe 42 may be provided as a single structure or may be assembled by multiple segments. When the cathode conductive probe 42 is formed by inserting a multi-section structure, the cathode conductive probe 42 with a proper length can be conveniently obtained by inserting according to the requirement of the coating thickness, so that the cathode conductive probe 42 can correspond to different coating thicknesses, and the universality is good.
As an embodiment of the present invention, the photovoltaic cell horizontal electroplating apparatus further includes:
a collecting tank 7, wherein the plating tank 1 is arranged in the collecting tank 7, and the collecting tank 7 is used for collecting the plating solution overflowing from the inlet 11 or the outlet 12;
locate the recovery pump 8 of collecting vat 7, the water inlet of recovery pump 8 is through first pipeline 81 and the inside intercommunication of collecting vat 7, and the delivery port of recovery pump 8 is through second pipeline 82 and the inside intercommunication of plating bath 1.
In this embodiment, when the battery piece 100 goes in and out of the electroplating bath 1, a small amount of electroplating solution may overflow from the inlet 11, the outlet 12 or the top opening of the electroplating bath 1, so the electroplating solution flowing out of the electroplating bath 1 is collected by the collecting tank 7, and the electroplating solution in the collecting tank 7 is pumped into the electroplating bath 1 again by the recovery pump 8, so that the electroplating solution can be recycled, continuous replenishment of the electroplating solution in the electroplating bath 1 can be realized, the liquid level of the electroplating solution in the electroplating bath 1 is kept in a constant range, the electroplating of the battery piece 100 is kept reliable, and the electroplating of the battery piece 100 is more uniform.
When the photovoltaic cell horizontal electroplating equipment provided by the invention is used for electroplating a photovoltaic cell, the cell moving mechanism 3 drives the cell 100 to be electroplated to enter the electroplating bath 1 from the inlet 11, the driving device drives the rotary motion piece 41 to rotate, the rotary motion piece 41 drives the plurality of cathode conductive probes 42 to synchronously rotate, at least one cathode conductive probe 42 is in contact with the cell 100 and keeps synchronous motion with the cell 100, and the cathode conductive probe 42 and the anode piece 2 form a closed loop all the time, so that the electroplating of the cell is realized. When the cell is moved in the plating tank 1 while the plating is performed, the cell moving mechanism 3 moves the cell 100, which has been plated, out of the outlet 12 until the plating of the cell is completed.
When the cell moving mechanism 3 drives the cell to move and electroplate in the electroplating bath 1, the cathode conductive probe 42 is always in contact with the cell 100 to be conductive, so that the whole cell 100 is continuously electroplated in the electroplating solution, and the electroplating efficiency is greatly improved; moreover, the battery piece 100 is in the electroplating movement, the battery piece 100 is soaked in the electroplating solution all the time, and avoid the plating layer to be oxidized by the air, and can maintain and stabilize the surface current secondary distribution of the battery piece 100, the uniformity of the plating layer of the battery piece 100 is increased, and simultaneously can avoid the problem of rough edges of the battery piece 100, thereby effectively promoting the plating layer quality of the photovoltaic battery piece 100, and the battery piece 100 is soaked in the electroplating solution all the time for electroplating, the electroplating can be completed once by utilizing one electroplating bath 1 for the battery piece 100, the utilization rate of the electroplating area is improved, and the overall length of the horizontal electroplating equipment of the photovoltaic battery piece can be greatly reduced. Compared with a vertical electroplating device, the photovoltaic cell horizontal electroplating device does not need to use a vertical electroplating chuck to clamp the cell 100, so that a large amount of fragments of the cell 100 are avoided, and the probability of the fragments can be reduced.
Example two
The embodiment of the invention also provides a method for electroplating the photovoltaic cell by using the horizontal electroplating equipment for the photovoltaic cell, which comprises the following steps:
a. the cell moving mechanism 3 drives the cell 100 to move from the inlet 11 to the outlet 12, so that the cell 100 enters the plating tank 1 and moves in the plating solution relative to the anode member 2;
in this step, the cell moving mechanism 3 drives the cell 100 of the cell 100 to enter the electroplating bath 1 from the inlet 11, and the cell moving mechanism 3 continues to drive the cell 100 to move the cell 100 from the inlet 11 to the outlet 12, so that the cell 100 moves in the electroplating solution relative to the anode member 2, and simultaneously drives the plurality of cathode conductive probes 42 to rotate to cooperate with the rotating member 41, so that the cathode conductive probes 42 are in contact with the cell 100, and the cell 100 is completely immersed in the electroplating solution for electroplating.
b. The rotary moving member 41 drives a plurality of cathode conductive probes 42 to synchronously rotate, wherein at least one cathode conductive probe 42 is in contact with the battery piece 100 and keeps synchronous motion with the battery piece 100, so that the cathode conductive probe 42 and the anode member 2 form a closed loop to perform electroplating on the surface of the battery piece 100;
in this step, when the battery piece 100 moves and is electroplated in the electroplating bath 1, the rotary motion member 41 continuously drives the plurality of cathode conductive probes 42 to make rotary motion, so that at least one cathode conductive probe 42 is in contact with the battery piece 100 and keeps synchronous motion with the battery piece 100, and thus the cathode conductive probe 42 always keeps contact with the battery piece 100, the cathode conductive probe 42 and the anode member 2 always form a closed loop, so that the battery piece 100 is continuously electroplated in the electroplating solution, and the electroplating efficiency is greatly improved; moreover, when the cell 100 moves in the electroplating process, the cell 100 is always soaked in the electroplating solution, so that the plating layer is prevented from being oxidized by air, the secondary distribution of the current on the surface of the cell 100 can be maintained and stabilized, the uniformity of the plating layer of the cell 100 is improved, and meanwhile, the problem of rough edge of the cell 100 can be avoided, so that the plating layer quality of the photovoltaic cell 100 is effectively improved.
c. The cell moving mechanism 3 moves the cell 100 that has completed the electroplating out of the outlet 12.
In this step, when the cell 100 moves and performs electroplating in the electroplating tank 1, when the cell moving mechanism 3 drives the cell 100 that has completed electroplating to move out of the outlet 12, the electroplating of the cell 100 is completed, and the cell moving mechanism 3 moves the cell 100 that has completed electroplating out of the electroplating tank 1 from the outlet 12, so as to perform the next processing process of the cell 100.
According to the electroplating method of the photovoltaic cell provided by the embodiment of the invention, the cell moving mechanism is driven to move in the electroplating bath, and the rotary moving part can drive the plurality of cathode conductive probes to rotate, so that at least one cathode conductive probe is in contact with the cell and keeps synchronous motion with the cell; and, the battery piece is in the electroplating and is moved, and the battery piece is soaked in the plating solution all the time, avoids the cladding material by air oxidation, and can maintain the stable current secondary distribution in battery piece surface, has increased the homogeneity of battery piece cladding material, can avoid the battery piece edge roughness problem simultaneously to effectively promote the cladding material quality of photovoltaic cell piece.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A photovoltaic cell horizontal electroplating device is characterized by comprising:
the electroplating bath is filled with electroplating solution, one end of the electroplating bath is provided with an inlet, and the other end of the electroplating bath is provided with an outlet opposite to the inlet;
an anode member disposed within the plating bath and below a liquid level of the plating solution;
the battery piece moving mechanism is arranged in the electroplating bath and used for driving the battery piece to move from the inlet to the outlet so as to enable the battery piece to move in the electroplating solution relative to the anode piece to realize electroplating;
the cathode conductive assembly arranged in the electroplating bath comprises a rotary motion piece driven by a driving device to rotate and a plurality of cathode conductive probes arranged on the rotary motion piece, wherein the rotary motion piece can drive the plurality of cathode conductive probes to synchronously rotate so that at least one cathode conductive probe is in contact with the battery piece and keeps synchronous motion with the battery piece.
2. The apparatus according to claim 1, wherein the rotary motion member is a chain or a belt, and a plurality of cathode conductive probes are annularly arrayed on the chain or the belt; the driving device comprises a first power device and a driving wheel connected with the first power device, and the driving wheel is matched with the rotary moving piece to drive the rotary moving piece to rotate.
3. The horizontal electroplating equipment for photovoltaic cells as claimed in claim 1, wherein the chain or the belt is arranged in a vertical direction, and the plurality of cathode conductive probes are perpendicular to the outer circumferential surface of the chain or the belt, so that part of the cathode conductive probes face the cell direction.
4. The horizontal electroplating device for photovoltaic cells as claimed in claim 1, wherein the chain or the belt is laid horizontally, and a plurality of cathode conductive probes are perpendicular to the chain or the belt and face the cells.
5. The apparatus of claim 1, wherein a plurality of said cathode conductive probes are sequentially fixed on said rotary motion member at equal intervals.
6. The horizontal electroplating device for the photovoltaic cell slice as claimed in claim 1, wherein the outer surface of the cathode conductive probe is coated with an insulating glue, and one end of the cathode conductive probe, which is in contact with the cell slice, is exposed.
7. The horizontal electroplating device for photovoltaic cells according to claim 1, wherein the cell moving mechanism comprises:
a second power unit;
a sprocket or pulley connected to the second power means;
and the conveying chain or the conveying belt is correspondingly matched with the chain wheel or the belt wheel and is used for driving the battery piece to move from the inlet to the outlet.
8. The horizontal electroplating device for the photovoltaic cell slices, as set forth in claim 1, is characterized by further comprising:
the two first rollers are arranged on the electroplating bath and positioned at the inlet, the two first rollers are oppositely arranged up and down, at least one first roller is movably arranged on the electroplating bath and can move up and down, so that the two first rollers are mutually far away to open the inlet or mutually approach to seal the inlet, and the battery piece can enter the electroplating bath from the space between the two first rollers.
9. The horizontal electroplating device for the photovoltaic cell slices as claimed in claim 8, further comprising:
the two second rollers are arranged on the electroplating bath and located at the outlet, the two second rollers are oppositely arranged up and down, at least one of the second rollers is movably arranged on the electroplating bath and can move up and down, so that the two second rollers are far away from each other to open the outlet or the two second rollers are close to each other to seal the outlet, and the battery piece can be moved out of the electroplating bath from between the two second rollers.
10. A method for electroplating a photovoltaic cell slice by using the photovoltaic cell slice horizontal electroplating device of any one of the claims 1-9, characterized in that the method comprises the following steps:
the battery piece moving mechanism drives the battery piece to move from the inlet to the outlet so as to enable the battery piece to enter the electroplating bath and move relative to the anode piece in the electroplating solution;
the rotary moving part drives a plurality of cathode conductive probes to synchronously rotate, wherein at least one cathode conductive probe is in contact with the cell piece and keeps synchronous motion with the cell piece, so that the cathode conductive probe and the anode piece form a closed loop to carry out electroplating on the surface of the cell piece;
the battery piece moving mechanism drives the battery piece which is electroplated to move out of the outlet.
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|---|---|---|---|
| CN202111269592.3A CN113930831A (en) | 2021-10-29 | 2021-10-29 | Horizontal electroplating equipment and method for photovoltaic cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111269592.3A CN113930831A (en) | 2021-10-29 | 2021-10-29 | Horizontal electroplating equipment and method for photovoltaic cell |
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| CN113930831A true CN113930831A (en) | 2022-01-14 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959846A (en) * | 2022-05-17 | 2022-08-30 | 安徽工业大学 | Cathode piece unit, electrochemical deposition coating experiment device, experiment method and coating prepared by experiment method |
| CN115637481A (en) * | 2022-11-16 | 2023-01-24 | 苏州太阳井新能源有限公司 | Photovoltaic cell electroplating equipment |
| CN115976618A (en) * | 2022-12-26 | 2023-04-18 | 苏州太阳井新能源有限公司 | Battery piece electroplating equipment |
| CN116254586A (en) * | 2023-05-15 | 2023-06-13 | 苏州晶洲装备科技有限公司 | Electroplating device |
| CN116988130A (en) * | 2023-09-25 | 2023-11-03 | 无锡釜川科技股份有限公司 | Horizontal roller type electroplating device |
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2021
- 2021-10-29 CN CN202111269592.3A patent/CN113930831A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959846A (en) * | 2022-05-17 | 2022-08-30 | 安徽工业大学 | Cathode piece unit, electrochemical deposition coating experiment device, experiment method and coating prepared by experiment method |
| CN115637481A (en) * | 2022-11-16 | 2023-01-24 | 苏州太阳井新能源有限公司 | Photovoltaic cell electroplating equipment |
| CN115637481B (en) * | 2022-11-16 | 2023-09-29 | 苏州太阳井新能源有限公司 | Photovoltaic cell piece electroplating equipment |
| CN115976618A (en) * | 2022-12-26 | 2023-04-18 | 苏州太阳井新能源有限公司 | Battery piece electroplating equipment |
| CN115976618B (en) * | 2022-12-26 | 2023-10-17 | 苏州太阳井新能源有限公司 | Battery piece electroplating equipment |
| CN116254586A (en) * | 2023-05-15 | 2023-06-13 | 苏州晶洲装备科技有限公司 | Electroplating device |
| CN116254586B (en) * | 2023-05-15 | 2023-08-04 | 苏州晶洲装备科技有限公司 | Electroplating device |
| CN116988130A (en) * | 2023-09-25 | 2023-11-03 | 无锡釜川科技股份有限公司 | Horizontal roller type electroplating device |
| CN116988130B (en) * | 2023-09-25 | 2023-12-22 | 无锡釜川科技股份有限公司 | Horizontal roller type electroplating device |
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