Photovoltaic cell single-face and double-face electroplating device

Abstract

The invention discloses a photovoltaic cell single-face and double-face electroplating device which comprises an electroplating bath, a fixed conductive mechanism, an elastic conductive mechanism, a rotating connecting rod mechanism, a lifting mechanism, a fixed frame and a rotating mechanism. The fixed conductive mechanism is fixed on the fixed frame; the elastic conductive mechanism is connected with the fixing frame through the rotating connecting rod mechanism, the rotating connecting rod mechanism and the rotating mechanism are used for controlling the elastic conductive mechanism to rotate on the fixing frame, and opening and closing switching between the fixed conductive mechanism and the elastic conductive mechanism is achieved. The battery piece is arranged between the fixed conductive mechanism and the elastic conductive mechanism; the lifting mechanism is used for driving the fixed frame, and the fixed conductive mechanism, the elastic conductive mechanism and the rotary connecting rod mechanism which are arranged on the fixed frame to ascend or descend; and the electroplating process of the battery piece is realized. According to the invention, single-sided electroplating or double-sided electroplating can be realized according to actual production requirements; due to the design of the elastic probe, the contact pressure with the battery piece can be adjusted, and the fragment rate is reduced; the occupied area is small, the structure is simple and maintenance is easy.

Description

Technical Field

[0001] The present invention relates to the technical field of electroplating devices, and in particular to a single-sided or double-sided electroplating device for photovoltaic cells. Background Art

[0002] As the global demand for clean energy continues to increase, the photovoltaic industry has developed rapidly. However, the traditional screen printing technology for photovoltaic cell manufacturing has the problem of high silver consumption. Silver is an expensive metal, and its large-scale use not only increases the cost of photovoltaic cells, but also limits the further promotion and application of photovoltaic cells.

[0003] In order to solve this problem, the photovoltaic industry has begun to explore new battery manufacturing technologies, including electroplating copper technology. Electroplating copper is to deposit metal copper on the surface of the substrate by electrolysis to make battery copper grid lines. Compared with traditional silver paste screen printing, it has lower costs, better conductivity, better plasticity and aspect ratio. It is expected to replace the high silver consumption screen printing technology and help TOPCon, HJT, XBC and other batteries reduce costs and increase efficiency and scale production.

[0004] Photovoltaic copper electroplating equipment currently mainly adopts horizontal, vertical and plug-in structures. Patent CN115637481A proposes a single-sided horizontal electroplating device, which uses a probe as the cathode. The probe and the battery cell run synchronously for conduction, but its positioning requirements are high, there is a movement difference between the probe and the battery cell, and the contact stability is poor; Patent CN217733298U proposes a horizontal electroplating device, which uses a flexible roller for conduction, but the plating problem on the roller surface is difficult to solve; Patent CN115613106B proposes a plug-in electroplating device, which inserts the battery cell on the cathode conductive bracket for electroplating, but this method is cumbersome to load and unload the battery cell, and the fragmentation rate is difficult to guarantee.

[0005] In view of the above-mentioned problems, the present invention proposes a single-sided and double-sided electroplating device for photovoltaic cells, which can improve the positioning accuracy of the cell, automatically load and unload the cell, and is a single-sided and double-sided electroplating device that does not require stripping. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a single-sided and double-sided electroplating device for photovoltaic cells, aiming to solve the problems of positioning accuracy of battery cells in the horizontal electroplating process, as well as the problems of difficult clamping and high fragmentation rate of battery cells in the vertical electroplating process existing in the prior art.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a single-sided and double-sided electroplating device for photovoltaic cells, the electroplating device includes an electroplating tank, a fixed conductive mechanism, an elastic conductive mechanism, a rotating connecting rod mechanism, a lifting mechanism, a fixed frame, and a rotating mechanism; several of the fixed conductive mechanisms are fixed on the fixed frame; several of the elastic conductive mechanisms are connected to the fixed frame through the rotating connecting rod mechanism, and the rotating connecting rod mechanism and the rotating mechanism are used to control the rotation of the elastic conductive mechanism on the fixed frame to realize the opening and closing switching between the fixed conductive mechanism and the elastic conductive mechanism; the battery cell is arranged between the fixed conductive mechanism and the elastic conductive mechanism; the lifting mechanism is connected to the electroplating tank and the fixed frame, and the lifting mechanism is used to drive the fixed frame and the fixed conductive mechanism, the elastic conductive mechanism, and the rotating connecting rod mechanism arranged on the fixed frame to rise or fall; the rotating mechanism is fixed on the electroplating tank, and the rotating mechanism is used to provide power for the rotating connecting rod mechanism; the electroplating process of the battery cell is realized.

[0008] Furthermore, the fixed conductive mechanism includes a fixed conductive base plate, a fixed conductive cover plate, a battery cell fixing frame, a first anode plate, and a fixed probe; the fixed conductive base plate is connected to the fixing frame, the fixed conductive cover plate is connected to the fixed conductive base plate, the battery cell fixing frame is connected to the fixed conductive cover plate, the first anode plate is fixed on the fixed conductive cover plate, and the fixed probe is fixed in the fixed conductive cover plate.

[0009] Furthermore, the fixed conductive mechanism is arranged to be inclined, and the inclination angle of the fixed conductive mechanism is 0 to 90 degrees.

[0010] Furthermore, when single-sided electroplating is performed on the battery cell, the fixed conductive mechanism is replaced by an annular air blowing sealing device, and the side of the annular air blowing sealing device in contact with the battery cell is an unplated surface, thereby isolating the unplated surface from the electroplating solution.

[0011] Furthermore, the elastic conductive mechanism includes an elastic conductive bottom plate, an elastic conductive cover plate, an airtight interface, a second anode plate, and an elastic probe; the elastic conductive bottom plate is connected to the elastic conductive cover plate, and the airtight interface is connected to the elastic conductive bottom plate to provide a gas interface; the elastic probe contacts and conducts electricity with the elastic conductive bottom plate through a conductive spring at the end, and the elastic probe slides through the holes on the elastic conductive cover plate and the second anode plate in turn.

[0012] Furthermore, when the elastic conductive mechanism and the fixed conductive mechanism are in a closed state, the elastic conductive mechanism and the fixed conductive mechanism are arranged in parallel; when the elastic conductive mechanism and the fixed conductive mechanism are in a separated state, the elastic conductive mechanism is arranged perpendicular to the electroplating tank.

[0013] Furthermore, the rotating connecting rod mechanism includes a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the fixed frame, and the other end is connected to the upper part of the elastic conductive mechanism; one end of the second connecting rod is connected to the fixed frame, and the other end is connected to the lower part of the elastic conductive mechanism; the length of the first connecting rod is greater than the length of the second connecting rod.

[0014] Furthermore, the lower end of the lifting mechanism is connected to the bottom of the electroplating tank, and the upper end of the lifting mechanism is connected to the fixed frame; when the lifting mechanism drives the fixed frame to descend, the battery cell is immersed in the plating solution in the electroplating tank; when the lifting mechanism drives the fixed frame to rise, the loading and unloading of the battery cell is completed.

[0015] Furthermore, the rotating mechanism is fixed to the side of the electroplating tank, and the rotating mechanism includes a motor and a gear; when the electroplating is completed, the lifting mechanism drives the fixed frame and the fixed conductive mechanism, the elastic conductive mechanism, and the rotating connecting rod mechanism arranged on the fixed frame to rise to the top of the electroplating tank, and the gear of the rotating mechanism is engaged with the gear of the rotating connecting rod structure to control the rotating connecting rod structure to rotate clockwise, and the elastic conductive mechanism opens to remove the battery cell after the electroplating is completed, and load the new battery cell to be electroplated, and the rotating mechanism controls the rotating connecting rod structure to rotate counterclockwise, and the elastic conductive mechanism is closed.

[0016] The beneficial effects of the present invention are as follows: compared with the prior art, the single-sided and double-sided electroplating device for photovoltaic cells provided by the present invention can realize single-sided electroplating or double-sided electroplating according to actual production needs; through the design of the elastic probe, the contact pressure between the elastic probe and the battery cell can be adjusted to reduce the fragmentation rate; the device occupies a small area, has a simple transmission structure, and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the electroplating main structure in the present invention.

[0020] Figure 4 It is a schematic diagram of the fixed conductive mechanism in the present invention.

[0021] Figure 5 It is a cross-sectional schematic diagram of the fixed conductive mechanism in the present invention.

[0022] Figure 6 It is a schematic diagram of the elastic conductive mechanism in the present invention.

[0023] Figure 7Schematic diagram of the cross section of the elastic conductive mechanism in the present invention

[0024] Figure 8 It is a schematic diagram of the electroplating state of the present invention.

[0025] Fig. 9 It is a structural schematic diagram of the annular air blowing sealing device used in single-sided electroplating of the present invention.

[0026] Fig.10 It is a schematic diagram of the battery cell electroplating unit in the closed state of the present invention.

[0027] Fig.11 It is a schematic diagram of the open state of the cell electroplating unit of the present invention.

[0028] Figure 1 Among them, 1-electroplating tank, 2-fixed conductive mechanism, 3-elastic conductive mechanism, 4-rotating connecting rod mechanism, 5-lifting mechanism, 6-fixed frame, 7-rotating mechanism;

[0029] Figure 4 Among them, 21-fixed conductive bottom plate, 22-fixed conductive cover plate, 23-battery cell fixing frame, 24-first anode plate, 25-fixed probe;

[0030] Figure 6 In the figure, 31-elastic conductive bottom plate, 32-elastic conductive cover plate, 33-air-sealed interface, 34-elastic probe, 35-second anode plate;

[0031] Fig. 9 Middle, 8-annular blowing sealing device;

[0032] Fig.10 In the figure, 41 is the first connecting rod, and 42 is the second connecting rod. DETAILED DESCRIPTION

[0033] The present invention is further described below by specific examples, but these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0034] Example

[0035] like Figure 1 As shown, a single-sided or double-sided electroplating device for photovoltaic cells is provided. The electroplating unit composed of a fixed conductive mechanism 2, an elastic conductive mechanism 3, a rotating connecting rod mechanism 4, and a lifting mechanism 5 is fixed on a plating tank 1 through a fixing frame 6. The elastic conductive mechanism 3 is connected to the rotating connecting rod mechanism 4. The rotating connecting rod mechanism 4 controls the elastic conductive mechanism 3 to rotate on the fixing frame 6 to realize the switching of the opening and closing states between the elastic conductive structure 3 and the fixed conductive mechanism 2. The lifting mechanism 5 controls the fixed conductive mechanism 2, the elastic conductive mechanism 3, the rotating connecting rod mechanism 4, and the fixing frame 6 to rise and fall in the electroplating tank 1. In the electroplating device, the number of electroplating units can be arbitrarily arranged according to the floor space.

[0036] like Figure 1 and 3 As shown, the rotating mechanism is fixed to the side of the electroplating tank, and the rotating mechanism includes a motor and a gear; when the electroplating is completed, the lifting mechanism drives the fixed frame and the fixed conductive mechanism, the elastic conductive mechanism, and the rotating connecting rod mechanism arranged on the fixed frame to rise to the top of the electroplating tank, and the gear of the rotating mechanism is engaged with the gear of the rotating connecting rod structure to control the rotating connecting rod structure to rotate clockwise, the elastic conductive mechanism is opened, the battery cell after the electroplating is completed is removed, and a new battery cell to be electroplated is loaded, the rotating mechanism controls the rotating connecting rod structure to rotate counterclockwise, and the elastic conductive mechanism is closed.

[0037] like Figure 2 As shown, the elastic conductive mechanism 3 is in a closed state and an open state respectively, and the fixed conductive mechanism is tilted, and the tilt angle of the fixed conductive mechanism is 0 to 90 degrees. In this embodiment, the fixed conductive mechanism 2 is preferably arranged at a 45-degree tilt, which is conducive to the automatic positioning of the battery cell by gravity. When the cell loading is completed, all elastic conductive mechanisms 3 are closed, and the fixed conductive mechanism 2, the elastic conductive mechanism 3, the rotating connecting rod mechanism 4, and the fixed frame 6 are lowered in the electroplating tank 1 under the action of the lifting mechanism 5, immersed in the electroplating solution and powered on for electroplating.

[0038] like Figure 4 , 5 As shown, the fixed conductive mechanism 2 includes a fixed conductive bottom plate 21, a fixed conductive cover plate 22, a battery cell fixing frame 23, a first anode plate 24, and a fixed probe 25; the fixed conductive bottom plate 21 is connected to the fixing frame 6, the fixed conductive cover plate 22 is connected to the fixed conductive bottom plate 21 by bolts, the battery cell fixing frame 23 is connected to the fixed conductive cover plate 22 by bolts, the first anode plate 24 is fixed on the fixed conductive cover plate 22, the fixed probe 25 is fixed in the fixed conductive cover plate 22 by bolts, and the sealing method of the fixed probe 25 and the fixed conductive cover plate 22 can be threaded sealing, adhesive sealing, etc.

[0039] like Figure 6 , 7As shown, the elastic conductive mechanism 3 includes an elastic conductive bottom plate 31, an elastic conductive cover plate 32, an air-sealing interface 33, a second anode plate 35, and an elastic probe 34; the elastic conductive bottom plate 31 is connected to the elastic conductive cover plate 32 by bolts, and the air-sealing interface 33 is connected to the elastic conductive bottom plate 31 to provide a gas interface; the elastic probe 34 is in contact with the elastic conductive bottom plate 31 for conduction through a conductive spring at the end, and the elastic probe 34 slides through the holes on the elastic conductive cover plate 32 and the second anode plate 35 in turn; the sealing method of the elastic probe 34 and the elastic conductive cover plate 32 can be pneumatic sealing, mechanical sealing, etc.

[0040] When the elastic conductive mechanism 3 and the fixed conductive mechanism 2 are in a closed state, the elastic conductive mechanism 3 and the fixed conductive mechanism 2 are arranged in parallel; when the elastic conductive mechanism 3 and the fixed conductive mechanism 2 are in a separated state, the elastic conductive mechanism 3 is arranged perpendicular to the electroplating tank 1.

[0041] The rotating link mechanism 4 includes a first link 41 and a second link 42. One end of the first link 41 is connected to the fixing frame 6, and the other end is connected to the upper part of the elastic conductive mechanism 3; one end of the second link 42 is connected to the fixing frame 6, and the other end is connected to the lower part of the elastic conductive mechanism 3; the length of the first link 41 is greater than the length of the second link 42. The first link 41 and the second link 42 can be made of metal or non-metal materials, and the first link 41 and the second link 42 can be replaced by electric or pneumatic rotating mechanisms.

[0042] The lower end of the lifting mechanism 5 is connected to the bottom of the electroplating tank 1, and the upper end of the lifting mechanism 5 is connected to the fixing frame 6; when the lifting mechanism 5 drives the fixing frame 6 to descend, the battery cells are immersed in the electroplating solution in the electroplating tank 1; when the lifting mechanism 5 drives the fixing frame 6 to rise, the loading and unloading of the battery cells are completed.

[0043] During double-sided electroplating, after the photovoltaic cell has completed the front-end degreasing and pickling process, it is adsorbed by the robot and loaded onto the cell fixing frame 23 of the fixed conductive mechanism 2. At this time, the elastic conductive mechanism 3 is in the open state. Fig.11 When the battery cell is installed, the battery cell fits with the lower end of the inclined surface of the battery cell fixing frame 23 under the action of gravity, and the positioning accuracy is high; after the battery cell is installed, the elastic conductive mechanism 3 rotates counterclockwise under the action of the rotating link mechanism 4, and the elastic probe 34 contacts the conductive point on the surface of the battery cell and completes the positioning with the fixed conductive mechanism 2, as shown in FIG. Fig.10As shown. The lifting mechanism 5 is activated, driving the fixed frame 6, the fixed conductive mechanism 2, the elastic conductive mechanism 3, and the rotating connecting rod mechanism 4 to descend to the electroplating solution of the electroplating tank 1 for electroplating. When the electroplating is completed, the lifting mechanism 5 is activated, driving the fixed frame 6, the fixed conductive mechanism 2, the elastic conductive mechanism 3, and the rotating connecting rod mechanism 4 to rise above the electroplating liquid surface. The elastic conductive mechanism 3 rotates clockwise under the action of the rotating connecting rod mechanism 4 to open, and the robot takes away the electroplated battery cells and loads the next batch of battery cells, completing an electroplating process.

[0044] As another embodiment, Fig. 9 As shown, during single-sided electroplating, the fixed conductive mechanism 2 is replaced by an annular air blowing sealing device 8, and the side of the annular air blowing sealing device 8 in contact with the battery cell is an unplated surface, thereby isolating the unplated surface from the electroplating solution.

[0045] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A photovoltaic cell single-sided or double-sided electroplating device, characterized in that: The electroplating device includes an electroplating tank, a fixed conductive mechanism, an elastic conductive mechanism, a rotating connecting rod mechanism, a lifting mechanism, a fixed frame, and a rotating mechanism; several of the fixed conductive mechanisms are fixed on the fixed frame; several of the elastic conductive mechanisms are connected to the fixed frame through the rotating connecting rod mechanism, and the rotating connecting rod mechanism and the rotating mechanism are used to control the rotation of the elastic conductive mechanism on the fixed frame to realize the opening and closing switching between the fixed conductive mechanism and the elastic conductive mechanism; the battery cell is arranged between the fixed conductive mechanism and the elastic conductive mechanism; the lifting mechanism is connected to the electroplating tank and the fixed frame, and the lifting mechanism is used to drive the fixed frame and the fixed conductive mechanism, the elastic conductive mechanism, and the rotating connecting rod mechanism arranged on the fixed frame to rise or fall; the rotating mechanism is fixed on the electroplating tank, and the rotating mechanism is used to provide power for the rotating connecting rod mechanism; the electroplating process of the battery cell is realized.

2. A photovoltaic cell single-side or double-side electroplating device as claimed in claim 1, characterized in that: The fixed conductive mechanism includes a fixed conductive bottom plate, a fixed conductive cover plate, a battery cell fixing frame, a first anode plate, and a fixed probe; the fixed conductive bottom plate is connected to the fixing frame, the fixed conductive cover plate is connected to the fixed conductive bottom plate, the battery cell fixing frame is connected to the fixed conductive cover plate, the first anode plate is fixed on the fixed conductive cover plate, and the fixed probe is fixed in the fixed conductive cover plate.

3. A photovoltaic cell single-side or double-side electroplating device as claimed in claim 1 or 2, characterized in that: The fixed conductive mechanism is arranged to be inclined, and the inclination angle of the fixed conductive mechanism is 0 to 90 degrees.

4. A photovoltaic cell single-side or double-side electroplating device as claimed in claim 1, characterized in that: When the battery cell is subjected to single-sided electroplating, the fixed conductive mechanism is replaced by an annular air blowing sealing device, and the side of the annular air blowing sealing device in contact with the battery cell is an unplated surface, thereby isolating the unplated surface from the electroplating solution.

5. A photovoltaic cell single-side or double-side electroplating device as claimed in claim 1, characterized in that: The elastic conductive mechanism includes an elastic conductive base plate, an elastic conductive cover plate, an airtight interface, a second anode plate, and an elastic probe; the elastic conductive base plate is connected to the elastic conductive cover plate, and the airtight interface is connected to the elastic conductive base plate to provide a gas interface; the elastic probe contacts and conducts electricity with the elastic conductive base plate through a conductive spring at the end, and the elastic probe slides through the holes on the elastic conductive cover plate and the second anode plate in turn.

6. A photovoltaic cell single-side or double-side electroplating device as claimed in claim 1 or 5, characterized in that: When the elastic conductive mechanism and the fixed conductive mechanism are in a closed state, the elastic conductive mechanism and the fixed conductive mechanism are arranged in parallel; when the elastic conductive mechanism and the fixed conductive mechanism are in a separated state, the elastic conductive mechanism is arranged perpendicular to the electroplating tank.

7. A photovoltaic cell single-side or double-side electroplating device as claimed in claim 1, characterized in that: The rotating connecting rod mechanism includes a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the fixed frame, and the other end is connected to the upper part of the elastic conductive mechanism; one end of the second connecting rod is connected to the fixed frame, and the other end is connected to the lower part of the elastic conductive mechanism; the length of the first connecting rod is greater than the length of the second connecting rod.

8. A photovoltaic cell single-side or double-side electroplating device as claimed in claim 1, characterized in that: The lower end of the lifting mechanism is connected to the bottom of the electroplating tank, and the upper end of the lifting mechanism is connected to the fixing frame; when the lifting mechanism drives the fixing frame to descend, the battery cells are immersed in the plating solution in the electroplating tank; when the lifting mechanism drives the fixing frame to ascend, the battery cells are separated from the plating solution, so as to complete the loading and unloading of the battery cells.

9. A photovoltaic cell single-side or double-side electroplating device as claimed in claim 1, characterized in that: The rotating mechanism is fixed to the side of the electroplating tank, and the rotating mechanism includes a motor and a gear. When the electroplating is completed, the lifting mechanism drives the fixed frame and the fixed conductive mechanism, the elastic conductive mechanism, and the rotating connecting rod mechanism arranged on the fixed frame to rise to the top of the electroplating tank. The gear of the rotating mechanism is engaged with the gear of the rotating connecting rod structure to control the rotating connecting rod structure to rotate clockwise. The elastic conductive mechanism opens, removes the battery cell after the electroplating is completed, and loads the new battery cell to be electroplated. The rotating mechanism controls the rotating connecting rod structure to rotate counterclockwise, and the elastic conductive mechanism closes.

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