A light-induced lamp source and an electroplating device for light-induced electroplating

Abstract

The present invention relates to the technical field of electroplating of photovoltaic panels, and discloses that the present invention is a light-induced lamp source, comprising: a transmission component, the transmission component comprising a hollow roller shaft, the roller shaft transmission connection to the output end of the motor; a light-emitting component, the light-emitting component comprising an LED light bar and a cable; the light bar is fixedly mounted on the outer wall of the roller shaft; the cable is arranged in the inner cavity of the roller shaft, and is used to connect the external circuit and provide power to the LED light bar; a support component, comprising: a lamp head, a lamp body and a roller sheet; the two lamp heads are respectively fixedly mounted at the two ends of the roller shaft; the lamp body is installed between the two lamp heads and is made of a transparent material. In the present invention, the lamp source and the transmission roller are designed as an integrated whole, which reduces the distance between the lamp source and the battery cell, improves the light intensity of the battery cell, increases the current intensity of the light-activated battery cell, accelerates the electroplating deposition rate, reduces the electroplating time, and thus reduces the length of the electroplating line.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic panel electroplating, and in particular to a light-induced lamp source and an electroplating device for light-induced electroplating. Background Art

[0002] Photovoltaic cells, also known as solar cells, are devices that use the photovoltaic effect to convert light energy into electrical energy, including TOPcon cells, HJT cells, and XBC cells. In the current mainstream process, the positive and back electrodes of photovoltaic cells are both made using screen-printed silver paste technology. With the development of photovoltaic cells, especially the mass production of TOPcon cells, photovoltaic cell production has entered the terawatt level. As a precious metal, silver has limited reserves and annual output, which restricts the further development of photovoltaic cells. Therefore, in order to further develop photovoltaic cells, it is becoming increasingly urgent to adopt processes that reduce the amount of silver used, or even completely replace the metallization solution of silver paste.

[0003] Copper electroplating technology is widely used in electronics, machinery, automobiles, PCB and other fields. It is considered to be the ultimate technology to completely replace silver paste due to its compact crystallization, good conductivity, low cost and controllable thickness. Existing copper electroplating technologies include vertical electroplating technology and horizontal electroplating technology. Although vertical electroplating technology equipment is mature, it has disadvantages such as low level of feeding automation, poor uniformity of coating thickness and easy fragmentation. Horizontal electroplating technology has attracted widespread attention from industry insiders due to its advantages such as high degree of automation, good coating uniformity and applicability to various thicknesses of cells.

[0004] Horizontal electroplating technology includes external power supply electroplating and light-induced electroplating. The external power supply electroplating technology has technical defects such as poor contact between the cell and the electrode, poor adhesion, and pinch points. Light-induced electroplating technology has attracted widespread attention because it does not rely on direct contact and conduction with an external power supply and is less affected by the width of the grid line. The current light-induced electroplating technology is mainly RENA's single-sided horizontal electroplating technology. If both sides of the cell need to be electroplated, it can only be achieved by adding a flipping mechanism and extending the electroplating line. In order to improve the production efficiency of photovoltaic cells and reduce the floor space of the electroplating line, it is necessary to develop a double-sided light-induced electroplating equipment. Summary of the invention

[0005] The purpose of the present invention is to provide a light-induced lamp source and an electroplating device for light-induced electroplating to solve the above technical problems:

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A light-induced lamp source, comprising:

[0008] A transmission assembly, the transmission assembly comprising a hollow roller shaft, the roller shaft being transmission-connected to the output end of the motor;

[0009] A light-emitting component, the light-emitting component comprising an LED light bar and a cable; the light bar is fixedly mounted on the outer wall of the roller shaft; the cable is arranged in the inner cavity of the roller shaft and is used to connect an external circuit and provide power to the LED light bar;

[0010] The support component includes: a lamp holder, a lamp body and a roller; the two lamp holders are fixedly mounted at the two ends of the roller shaft respectively; the lamp body is installed between the two lamp holders and is made of transparent material, and is used to isolate the external electroplating solution and conduct the light emitted by the light-emitting component to the outside; the roller fixing ring is sleeved on the outer wall of the lamp body, and is used to support the battery cell.

[0011] As a further technical solution, the LED light strip includes a plurality of lamp beads, which are fixedly mounted on the outer wall of the roller by means of a heat-conductive adhesive material, and the plurality of lamp beads are connected to the cable by means of a conductive wire that passes through the side wall of the roller.

[0012] An electroplating device for light-induced electroplating, comprising:

[0013] A working tank, wherein a plurality of electroplating inner tanks are arranged in the working tank, and a conveying roller and a light source are rotatably installed in each of the electroplating inner tanks, and the conveying roller is parallel to the light source;

[0014] Anode titanium mesh, horizontally arranged at both ends of the conveying roller and the lamp source;

[0015] Water-blocking rollers, which are horizontally arranged on both sides of the electroplating inner tank and are used to block the electroplating solution from spraying out of the electroplating inner tank;

[0016] A cathode conductive roller, arranged outside the water-blocking roller, is used to supply power to the upper and lower surfaces of the battery cell;

[0017] Nozzle groups, arranged at the upper and lower ends of the electroplating inner tank, for spraying liquid on the upper and lower surfaces of the battery cell;

[0018] The liquid supply component is used to provide electroplating liquid to the nozzle group.

[0019] As a further technical solution, the electroplating inner tank comprises: a tank body, a feed inlet and an overflow port;

[0020] The feed port is arranged on the side wall of the tank body, and is used to accommodate the battery cells; the overflow port is arranged on the upper edge of the tank body, and is used to provide an overflow channel for the electroplating solution;

[0021] As a further technical solution, the liquid supply assembly includes a liquid storage tank; the liquid storage tank is connected to the nozzle group through an infusion tube, and a liquid pump, a filter, a ball valve and a flow meter are installed on the infusion tube.

[0022] As a further technical solution, an overflow trough and a liquid level gauge are provided on the liquid storage tank. The overflow trough is used to accommodate the electroplating solution overflowing from the liquid storage tank; the liquid level gauge is used to monitor the liquid level of the electroplating solution in the liquid storage tank.

[0023] As a further technical solution, the conductive roller includes an axis head, a roller body and a flexible layer; the axis head is arranged at both ends of the roller body, and the axis head is externally connected to a power source; the flexible layer is coated on the outer wall of the roller body, and conductive fibers are evenly distributed on the surface of the flexible layer.

[0024] Beneficial effects of the present invention:

[0025] (1) The light source and the conveying roller are integrated into one design in the present invention, which reduces the distance between the light source and the cell, improves the light intensity of the cell, increases the current intensity of the light-activated cell, speeds up the electroplating deposition rate, reduces the electroplating time, and thus reduces the length of the electroplating line;

[0026] (2) The present invention uses upper and lower nozzles to spray liquid, which accelerates the convection of the solution around the battery cell, reduces concentration polarization, increases the replenishment rate of metal ions, and makes the electroplating film thickness more uniform;

[0027] (3) The overflow port is used in the present invention to improve the overflow effect of the tank liquid and ensure the stability of the tank liquid level. In addition, the overflow tank can quickly filter the organic matter generated by the decomposition of the electroplating additive. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is a schematic diagram of the structure of the light-induced lamp source in the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the LED light bar in the present invention;

[0031] Figure 3 It is a schematic structural diagram of an electroplating device used for light-induced electroplating in the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the electroplating inner tank in the present invention;

[0033] Figure 5 It is a schematic structural diagram of the cathode conductive roller in the present invention.

[0034] Description of the drawings: 0. Battery cell; 1. Light source; 101. Cable; 102. Roller; 103. Lamp body; 104. LED light strip; 105. Roller; 106. Lamp head; 2. Electroplating inner tank; 3. Conveying roller; 4. Working tank; 5. Anode titanium mesh; 6. Water-blocking roller; 7. Cathode conductive roller; 8. Nozzle group; 9. Ball valve; 10. Flow meter; 11. Filter; 12. Liquid pump; 13. Overflow tank; 14. Liquid level meter; 15. Liquid storage tank; 201. Tank body; 202. Feed inlet; 203. Overflow port; 1041. Lamp beads; 1042. Thermally conductive adhesive material; 1043. Conductive wire. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1-2 As shown, the present invention is a light-induced lamp source, comprising:

[0037] A transmission assembly, the transmission assembly includes a hollow roller shaft 102, and the roller shaft 102 is transmission-connected to the output end of the motor;

[0038] A light-emitting component, the light-emitting component includes an LED light bar 104 and a cable 101; the light bar is fixedly mounted on the outer wall of the roller 102; the cable 101 is arranged in the inner cavity of the roller 102 and is used to connect an external circuit and provide power to the LED light bar 104;

[0039] The supporting assembly includes: a lamp holder 106, a lamp body 103 and a roller 105; the two lamp holders 106 are respectively fixedly mounted at the two ends of the roller 102; the lamp body 103 is installed between the two lamp holders 106 and is made of a transparent material, used to isolate the external electroplating solution and conduct the light emitted by the light-emitting assembly to the outside; the roller 105 is fixedly sleeved on the outer wall of the lamp body 103 to support the battery cell 0.

[0040] The LED light bar 104 includes a plurality of lamp beads 1041, specifically a plurality of 0.01W-1W lamp beads 1041, for providing light of a certain light intensity. The LED light bar 104 is distributed on the rotating shaft in a cross shape, and the lamp beads 1041 are fixedly mounted on the outer wall of the roller 102 through a thermally conductive adhesive material 1042, and the plurality of lamp beads 1041 are connected to the cable 101 through a conductive wire 1043 that passes through the side wall of the roller 102.

[0041] Through the above technical scheme, this embodiment provides a light-induced lamp source. When in use, the battery cell 0 is placed on the supporting assembly, and the motor drives the roller 102 to rotate and carry the battery cell 0 forward. The integrated design of the light-emitting assembly and the roller 102 reduces the distance between the light source 1 and the battery cell 0, improves the light intensity of the battery cell 0, increases the current intensity of the light-activated battery cell 0, accelerates the electroplating deposition rate, reduces the electroplating time, and thus reduces the length of the electroplating line. It should be noted that the lamp holder 106 is used for sealing to prevent the electroplating solution from entering the lamp body 103. It is made of copper, silver, titanium, germanium, aluminum nitride, graphite, polytetrafluoroethylene and other materials to dissipate the heat from the light bar. The thermally conductive adhesive material 1042 includes thermally conductive silicone, graphene, and thermally conductive gel.

[0042] like Figure 3 As shown, an electroplating device for light-induced electroplating comprises:

[0043] A working tank 4, wherein a plurality of electroplating inner tanks 2 are arranged in the working tank 4, and a conveying roller 3 and a light source 1 are rotatably installed in each of the electroplating inner tanks 2, and the conveying roller 3 and the light source 1 are parallel in position;

[0044] Anode titanium mesh 5, horizontally arranged at both ends of the conveying roller 3 and the light source 1;

[0045] Water-blocking rollers 6, which are horizontally arranged on both sides of the electroplating inner tank 2, and are used to block the electroplating solution from spraying out of the electroplating inner tank 2;

[0046] The cathode conductive roller 7 is arranged outside the water blocking roller 6 and is used to supply power to the upper and lower surfaces of the battery cell 0;

[0047] The nozzle group 8 is arranged at the upper and lower ends of the electroplating inner tank 2 and is used to spray liquid on the upper and lower surfaces of the battery cell 0;

[0048] The liquid supply component is used to provide electroplating liquid to the nozzle group 8.

[0049] Through the above technical solution, this embodiment provides an electroplating device for light-induced electroplating. By setting the nozzle group 8, the upper and lower nozzles are used to spray liquid, which accelerates the convection of the solution around the battery cell 0, reduces concentration polarization, increases the replenishment rate of metal ions, and makes the electroplating film thickness more uniform. Specifically, the electric field is formed by the cathode conductive roller 7, the anode titanium mesh 5 and the electroplating solution, and the battery cell 0 is electroplated. It should be noted that the surface layer of the water-blocking roller 6 can be set as a sponge, and the inner layer is a hard material.

[0050] like Figure 3-4 As shown, the electroplating inner tank 2 includes: a tank body 201, a material inlet 202 and an overflow port 203;

[0051] The feed port 202 is provided on the side wall of the tank body 201 for accommodating the battery cell 0; the overflow port 203 is provided at the upper edge of the tank body 201 for providing an overflow channel for the electroplating solution;

[0052] The liquid supply assembly includes a liquid storage tank 15, which is used to store electroplating liquid; the liquid storage tank 15 is connected to the nozzle group 8 through an infusion tube, and a liquid pump 12, a filter 11, a ball valve 9 and a flow meter 10 are installed on the infusion tube.

[0053] The liquid storage tank 15 is provided with an overflow tank 13 and a liquid level meter 14 . The overflow tank 13 is used to accommodate the electroplating solution overflowing from the liquid storage tank 15 ; the liquid level meter 14 is used to monitor the liquid level of the electroplating solution in the liquid storage tank 15 .

[0054] Through the above technical scheme, this embodiment provides a specific structure of the electroplating inner tank 2 and the liquid supply component. The electroplating liquid in the liquid storage tank 15 is extracted by the liquid pump 12, filtered by the filter 11, and provided to each nozzle in the nozzle group 8. The flow meter 10 can monitor the flow of each nozzle. The overflow tank 13 is arranged on the side of the liquid storage tank 15, and can accommodate the electroplating liquid overflowing from the liquid storage tank 15. The liquid level meter 14 is used to detect the liquid level of the electroplating tank liquid and monitor the liquid level. In addition, by setting the overflow port 203, the overflow effect of the tank liquid is improved to ensure the stability of the tank liquid level. Through the design of the overflow tank 13, the organic matter produced by the decomposition of the electroplating additive can be quickly filtered.

[0055] like Figure 5 As shown, the conductive roller includes an axis head, a roller body and a flexible layer; the axis head is arranged at both ends of the roller body, and the axis head is externally connected to a power source; the flexible layer is coated on the outer wall of the roller body, and conductive fibers are evenly distributed on the surface of the flexible layer.

[0056] Through the above technical solution, in this embodiment, the flexible layer is intermittently arranged on the outer periphery of the roller body, and a certain density of conductive fibers are evenly distributed on the surface, which is used to make electrical contact with the battery cell 0, while providing a flexible buffer space to adapt to battery cells 0 of different thicknesses to ensure good conductivity of the battery cell 0.

[0057] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A light-induced lamp source, characterized in that: include: A transmission assembly, the transmission assembly comprising a hollow roller shaft (102), the roller shaft (102) being drivingly connected to an output end of the motor; A light-emitting component, the light-emitting component comprising an LED light bar (104) and a cable (101); the light bar is fixedly mounted on the outer wall of a roller shaft (102); the cable (101) is arranged in the inner cavity of the roller shaft (102) and is used to connect an external circuit and provide power to the LED light bar (104); A support component comprises: a lamp holder (106), a lamp body (103) and a roller sheet (105); the two lamp holders (106) are respectively fixedly mounted on the two ends of the roller shaft (102); the lamp body (103) is mounted between the two lamp holders (106) and is made of a transparent material, and is used to isolate external electroplating liquid and conduct light emitted by the light-emitting component to the outside; the roller sheet (105) is fixedly sleeved on the outer wall of the lamp body (103) and is used to support the battery sheet (0); The LED light bar (104) comprises a plurality of lamp beads (1041), wherein the lamp beads (1041) are fixedly mounted on the outer wall of the roller (102) via a heat-conductive adhesive material (1042), and the plurality of lamp beads (1041) are connected to the cable (101) via a conductive wire (1043) that passes through the side wall of the roller (102).

2. An electroplating device for light-induced electroplating, characterized in that: include: A working tank (4), wherein a plurality of electroplating inner tanks (2) are arranged in the working tank (4), and a conveying roller (3) and the light-induced lamp source (1) as claimed in claim 1 are rotatably installed in each of the electroplating inner tanks (2), and the conveying roller (3) and the lamp source (1) are positioned parallel to each other; Anode titanium mesh (5) is horizontally arranged at both ends of the conveying roller (3) and the light source (1); Water-blocking rollers (6), which are horizontally arranged on both sides of the electroplating inner tank (2) and are used to block the electroplating solution from spraying out of the electroplating inner tank (2); A cathode conductive roller (7) is arranged outside the water-blocking roller (6) and is used to supply power to the upper and lower surfaces of the battery cell (0); a nozzle group (8) is arranged at the upper and lower ends of the electroplating inner tank (2) and is used to spray liquid to the upper and lower surfaces of the battery cell (0); A liquid supply component is used to provide electroplating liquid to the nozzle group (8).

3. The electroplating device for light-induced electroplating according to claim 2, characterized in that: The electroplating inner tank (2) comprises: a tank body (201), a material inlet (202) and an overflow port (203); The feed port (202) is arranged on the side wall of the tank body (201) and is used to accommodate the battery cell (0); the overflow port (203) is arranged on the upper edge of the tank body (201) and is used to provide an overflow channel for the electroplating solution.

4. The electroplating device for light-induced electroplating according to claim 3, characterized in that: The liquid supply assembly comprises a liquid storage tank (15); the liquid storage tank (15) is connected to the nozzle assembly (8) via a liquid infusion tube, and a liquid pump (12), a filter (11), a ball valve (9) and a flow meter (10) are installed on the liquid infusion tube.

5. The electroplating device for light-induced electroplating according to claim 4, characterized in that: The liquid storage tank (15) is provided with an overflow tank (13) and a liquid level meter (14); the overflow tank (13) is used to contain the electroplating liquid overflowing from the liquid storage tank (15); and the liquid level meter (14) is used to monitor the liquid level of the electroplating liquid in the liquid storage tank (15).

6. The electroplating device for light-induced electroplating according to claim 2, characterized in that: The conductive roller comprises a shaft head, a roller body and a flexible layer; The shaft heads are arranged at both ends of the roller body, and the shaft heads are externally connected to a power source; The flexible layer is coated on the outer wall of the roller body, and conductive fibers are evenly distributed on the surface of the flexible layer.

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