Conductive device and horizontal electroplating equipment

Abstract

According to the conductive device and the horizontal electroplating equipment provided by the utility model, the annular metal conductive roller with high conductivity is adopted, and the conductive filling piece of which the density is smaller than that of the annular metal conductive roller is filled in the annular metal conductive roller, so that the conductive roller which is relatively light in weight, good in conductivity, relatively small in potential difference and capable of resisting an acid solution can be provided; the structural strength of the annular metal conductive roller can be improved through the arrangement of the reinforcers; due to the patterning arrangement of the peripheral surface of the annular metal conductive roller, enough friction force can be provided for a to-be-electroplated product, slipping is avoided, and stable conveying is carried out; the conductive device can provide a very ideal indirect contact cathode, and is suitable for horizontal electroplating of photovoltaic cells and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of electroplating and relates to a conductive device and horizontal electroplating equipment. Background Art

[0002] With the expansion and rapid development of the photovoltaic industry, the competition for solar photovoltaic products in the market is becoming increasingly fierce. In the solar photovoltaic industry, the horizontal electroplating process of battery cells is more important.

[0003] Horizontal electroplating technology is a method of placing the workpiece to be plated parallel to the surface of the electroplating solution for electroplating. It is roughly the same as the basic principle of ordinary electroplating. It includes a cathode and an anode. Generally, the cathode is used to contact the workpiece to be plated, and the anode is used to conduct electricity into the electroplating solution. In this way, an electrode reaction will occur in the electroplating solution after power is turned on. Under the action of the electric field, the metal ions in the electroplating solution migrate to the vicinity of the cathode to form a coating on the workpiece to be plated. Horizontal electroplating is easy to operate, suitable for a wide range of workpiece sizes, and is convenient for large-scale automated operations and closed operations. It has developed rapidly in recent years and is gradually moving towards a mature technology with higher quality and higher reliability.

[0004] like Figure 1 An existing horizontal electroplating equipment is shown, wherein 1 represents anode, 2 represents transmission roller, 3 represents cathode roller, 4 represents isolation slot, 5 represents battery cell, 6 represents slot body, 7 represents power source, and all cathode rollers 3 are connected to the cathode end of power source 7 with wires, and anode 1 is connected to the anode end of power source 7. Among them, the design of cathode roller 3 is particularly important, which is related to the electrical and mechanical properties of contact with battery cell, such as resistance, conductivity uniformity, electric field distribution uniformity, friction force and degree of damage to battery cell.

[0005] Therefore, it is necessary to provide a conductive device and horizontal electroplating equipment. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a conductive device and a horizontal electroplating device to solve the application problem of the cathode roller in the prior art.

[0007] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a conductive device, which comprises:

[0008] Ring-shaped metal conductive roller;

[0009] A reinforcing member, wherein the reinforcing member is disposed in the annular metal conductive roller and contacts the annular metal conductive roller;

[0010] A conductive filler, wherein the conductive filler is filled in the annular metal conductive roller and contacts the annular metal conductive roller, and the density of the conductive filler is lower than that of the annular metal conductive roller;

[0011] A conductive shaft, wherein the conductive shaft is mounted on one side of the annular metal conductive roller, and both ends of the conductive shaft are electrically connected to a power source and the annular metal conductive roller respectively;

[0012] A driving assembly is installed on a side of the annular metal conductive roller away from the conductive shaft and is connected to the annular metal conductive roller to drive the annular metal conductive roller and the conductive shaft to rotate synchronously.

[0013] Optionally, the conductive filler includes conductive fibers or conductive cotton.

[0014] Optionally, when the ambient temperature is 20°C, the resistivity of the annular metal conductive roller is 5.4×10 -7 Ω·m or less, and when the ambient temperature changes by 20°C, the resistivity of the annular metal conductive roller changes within a range of 6×10 -8 Ω·m or less.

[0015] Optionally, the resistance between the conductive shaft and the annular metal conductive roller is less than 0.2Ω; and the potential difference between the two ends of the annular metal conductive roller is less than 0.1V.

[0016] Optionally, the annular metal conductive roller includes a copper annular metal conductive roller, a titanium annular metal conductive roller or a nickel annular metal conductive roller.

[0017] Optionally, the fixing method of the conductive shaft and the annular metal conductive roller includes a plug-in snap-on connection or a rotary snap-on connection.

[0018] Optionally, a thread or a mesh pattern is provided on the outer peripheral surface of the annular metal conductive roller.

[0019] Optionally, it also includes an insulating fixing piece fixed to the end of the annular metal conductive roller; a sealing ring is provided between the insulating fixing piece and the annular metal conductive roller.

[0020] The present invention also provides a horizontal electroplating device, which includes any one of the above-mentioned conductive devices.

[0021] As described above, the conductive device and horizontal electroplating equipment of the utility model adopt an annular metal conductive roller with high conductivity, and the conductive filler with a filling density lower than that of the annular metal conductive roller can provide a conductive roller with light weight, good conductivity, small potential difference, and resistance to acidic solutions, and the structural strength of the annular metal conductive roller can be improved by setting a reinforcement member; the patterned setting of the outer peripheral surface of the annular metal conductive roller can provide sufficient friction for the product to be electroplated to avoid slipping for stable transmission; the conductive device can provide a very ideal indirect contact cathode, which is suitable for horizontal electroplating of photovoltaic cells, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a schematic structural diagram of a horizontal electroplating device in the prior art.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the conductive device in the embodiment of the utility model.

[0024] Figure 3 Display as Figure 2 Schematic diagram of the cross-sectional structure along A-A'.

[0025] Figure 4 Display as Figure 2 Schematic diagram of the cross-sectional structure along B-B'.

[0026] Description of Reference Numerals

[0027] 1 Anode

[0028] 2 Drive rollers

[0029] 3 Cathode roller

[0030] 4 Isolation slots

[0031] 5. Battery Cell

[0032] 6 Trough

[0033] 7 Power Supply

[0034] 100 Ring Metal Conductive Roller

[0035] 200 Conductive filler

[0036] 300 Conductive shaft

[0037] 401 Gear

[0038] 402 Shaft

[0039] 501 First insulating fixing piece

[0040] 502 Second insulating fixing piece

[0041] 600 Conductive shaft fixing ring

[0042] 701 First bearing base

[0043] 702 Second bearing base

[0044] 800 Fixings

[0045] 900 Seal

[0046] 110 reinforcement DETAILED DESCRIPTION

[0047] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0048] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] like Figure 2 , Figure 3 and Figure 4The present embodiment provides a conductive device, which includes an annular metal conductive roller 100, a reinforcement 110, a conductive filler 200, a conductive shaft 300 and a driving assembly, wherein the reinforcement 110 is arranged in the annular metal conductive roller 100 and contacts the annular metal conductive roller 100; the conductive filler 200 is filled in the annular metal conductive roller 100 and contacts the annular metal conductive roller 100, and the density of the conductive filler 200 is less than that of the annular metal conductive roller 100; the conductive shaft 300 is installed on one side of the annular metal conductive roller 100, and the two ends of the conductive shaft 300 are electrically connected to a power source and the annular metal conductive roller 100 respectively; the driving assembly is installed on a side of the annular metal conductive roller 100 away from the conductive shaft 300, and is connected to the annular metal conductive roller 100, so as to drive the annular metal conductive roller 100 and the conductive shaft 300 to rotate synchronously.

[0051] One end of the conductive shaft 300 is connected to the negative pole of the power supply, and the other end is connected to the annular metal conductive roller 100 , so that the product to be electroplated is energized through the annular metal conductive roller 100 which is in direct line contact with the product to be electroplated.

[0052] As an example, when the ambient temperature is 20°C, the resistivity ρ of the annular metal conductive roller 100 is t Can be 5.4×10 -7 Ω·m or less.

[0053] Specifically, the annular metal conductive roller 100 may include a copper annular metal conductive roller, a titanium annular metal conductive roller or a nickel annular metal conductive roller, wherein, according to the formula ρ t =ρ 0 (1+AT), where A represents the temperature coefficient of resistivity associated with the material, T represents the temperature, and ρ 0 Represents the resistivity at 0℃, ρt represents the resistivity at T℃. The resistivity of copper at 20℃ is ρ t 1.75×10 -8 Ω·m, resistivity ρ of titanium t =54×10 -8 Ω·m, resistivity ρ of nickel t =6.8×10 -8 Ω·m, according to When the resistivity temperature coefficient A, length L and cross-sectional area S are known, the resistance R can be calculated.

[0054] In this embodiment, the length L of the annular metal conductive roller 100 is 0.2 m, and the cross-sectional area S of the annular metal conductive roller 100 is 1.24×10 -4 m2 , it can be seen that when a copper ring metal conductive roller is used, the resistance R 1 2.8×10 -5 Ω, when titanium ring metal conductive roller is used, the resistance R 2 8.6×10 -4 Ω, when a nickel ring metal conductive roller is used, the resistance R 3 1.09×10 -4 Ω.

[0055] When the ambient temperature changes by 20°C, that is, when the ambient temperature fluctuates by 20°C, according to the formula, the resistivity ρ of the annular metal conductive roller 100 is t The range of variation can be 6×10 -8 Within Ω·m.

[0056] The specific material selection of the annular metal conductive roller 100 is not excessively limited here.

[0057] As an example, the electrical resistance between the conductive shaft 300 and the annular metal conductive roller 100 is below 0.2Ω.

[0058] Specifically, by selecting the conductive shaft 300 and the annular metal conductive roller 100, after resistance accumulation calculation (without considering the reinforcement 110 and the conductive filler 200), the resistance of the conductive shaft 300 and the annular metal conductive roller 100 can be made below 0.2Ω, thereby requiring a lower value for the power supply voltage.

[0059] As an example, the potential difference between the two ends of the annular metal conductive roller 100 is less than 0.1V, which can meet the potential deviation requirement of the electroplated product in the process.

[0060] As an example, the conductive filler 200 may include conductive fibers or conductive cotton.

[0061] Specifically, by filling the conductive filler 200 in the annular metal conductive roller 100, the electric field can be adjusted so that the outer peripheral surface of the annular metal conductive roller 100 has a more uniform electric potential, further reducing the potential difference of the annular metal conductive roller 100, thereby providing the annular metal conductive roller 100 with a smaller weight, better conductivity, smaller potential difference, and resistance to acidic solutions.

[0062] As an example, the yield strength of the annular metal conductive roller 100 is greater than 80 GPa; the reinforcement 110 includes a corrugated plate or a rib plate.

[0063] Specifically, to ensure the electrical performance of the annular metal conductive roller 100, the annular metal conductive roller 100 uses a metal roller with high conductivity and a yield strength greater than 80Gpa. To ensure the structural strength of the annular metal conductive roller 100, the reinforcing member 110 is arranged inside the annular metal conductive roller 100, such as Figure 4 The reinforcing member 110 may include a corrugated plate, a rib plate, etc., and the shape and arrangement of the reinforcing member 110 are not excessively limited. The reinforcing member 110 may be made of an insulating material or a conductive material, which can be selected according to needs.

[0064] As an example, a thread or a mesh pattern may be provided on the outer circumferential surface of the annular metal conductive roller 100 .

[0065] Specifically, since the product to be electroplated is in direct contact with the outer circumferential surface of the annular metal conductive roller 100, and the product to be electroplated is transmitted by the operation of the annular metal conductive roller 100, when right-handed threads, left-handed threads, left-right cross threads or mesh patterns are provided on the outer circumferential surface of the annular metal conductive roller 100, sufficient friction can be provided for the product to be electroplated to avoid slipping of the product to be electroplated during the transmission process.

[0066] As an example, an insulating fixing piece fixed to the end of the annular metal conductive roller 100 may also be included; a sealing ring 900 is provided between the insulating fixing piece and the annular metal conductive roller 100 .

[0067] Specifically, Figure 2 and Figure 3 In this embodiment, a first insulating fixing member 501 and a second insulating fixing member 502 are respectively provided at both ends of the annular metal conductive roller 100. The provision of the first insulating fixing member 501 and the second insulating fixing member 502 can avoid the transmission of electricity to other parts of the equipment, thereby improving the stability of electrical transmission.

[0068] Furthermore, it is preferred that the first insulating fixing member 501 and the second insulating fixing member 502 are provided with sealing rings 900 , such as O-rings, at the connection with the annular metal conductive roller 100 to improve the sealing performance.

[0069] In this embodiment, when installing the conductive shaft 300, the conductive shaft 300 can be fixed by the conductive shaft fixing ring 600 and the first bearing base 701, that is, the conductive shaft 300 can be fixed by the conductive shaft fixing ring 600, the first bearing base 701 can be installed on the equipment, the conductive shaft 300 can rotate in the first bearing base 701, the conductive shaft fixing ring 600 can be fixed to the first insulating fixing member 501 by welding, etc., and the first insulating fixing member 501 can be connected to one end of the annular metal conductive roller 100 by a fixing member 800 such as a screw.

[0070] In this embodiment, the driving assembly adopts bearing transmission, but the driving assembly is not limited to this, that is, the driving assembly may include a gear 401 and a rotating shaft 402 connected to the gear 401, the rotating shaft 402 is fixed by a second bearing base 702, and the second bearing base 702 can be fixed on the equipment, the rotating shaft 402 can rotate in the second bearing base 702, one end of the rotating shaft 402 can be fixed to the second insulating fixing member 502 by welding, etc., the second insulating fixing member 502 can be connected to the annular metal conductive roller 100 by the fixing member 800 such as screws, and the other end of the rotating shaft 402 is connected to the gear 401, so that when a power part such as a motor drives the gear 401 to rotate, it can synchronously drive the rotating shaft 402 to rotate, so as to drive the annular metal conductive roller 100 and the conductive shaft 300 to rotate synchronously, but the type of the driving assembly is not limited to this.

[0071] As an example, the fixing method of the conductive shaft 300 and the annular metal conductive roller 100 may include a plug-in snap connection or a rotating snap connection. The fixing method of the conductive shaft 300 and the annular metal conductive roller 100 can be selected according to needs and is not excessively restricted here.

[0072] This embodiment also provides a horizontal electroplating device, which includes the above-mentioned conductive device, so the structure of the conductive device is not described here, and the conductive device can provide a very ideal indirect contact cathode, which is suitable for electroplating photovoltaic cells, etc. The specific type of the horizontal electroplating device is not overly limited here.

[0073] To sum up, the conductive device and horizontal electroplating equipment of the utility model adopt an annular metal conductive roller with high conductivity, and the conductive filler with a filling density lower than that of the annular metal conductive roller can provide a conductive roller with light weight, good conductivity, small potential difference and resistance to acidic solutions, and the structural strength of the annular metal conductive roller can be improved by setting a reinforcement member; the patterned setting of the outer peripheral surface of the annular metal conductive roller can provide sufficient friction for the product to be electroplated to avoid slipping for stable transmission; the conductive device can provide a very ideal indirect contact cathode, which is suitable for horizontal electroplating of photovoltaic cells, etc.

[0074] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A conductive device, characterized in that: The conductive device comprises: Ring-shaped metal conductive roller; A reinforcing member, wherein the reinforcing member is disposed in the annular metal conductive roller and contacts the annular metal conductive roller; A conductive filler, wherein the conductive filler is filled in the annular metal conductive roller and contacts the annular metal conductive roller, and the density of the conductive filler is lower than that of the annular metal conductive roller; A conductive shaft, wherein the conductive shaft is mounted on one side of the annular metal conductive roller, and both ends of the conductive shaft are electrically connected to a power source and the annular metal conductive roller respectively; A driving assembly is installed on a side of the annular metal conductive roller away from the conductive shaft and is connected to the annular metal conductive roller to drive the annular metal conductive roller and the conductive shaft to rotate synchronously.

2. The conductive device according to claim 1, characterized in that: The conductive filler includes conductive fibers or conductive cotton.

3. The conductive device according to claim 1, characterized in that: When the ambient temperature is 20°C, the resistivity of the annular metal conductive roller is 5.4×10 -7 Ω·m or less, and when the ambient temperature changes by 20°C, the resistivity of the annular metal conductive roller changes within a range of 6×10 -8 Ω·m or less.

4. The conductive device according to claim 1, characterized in that: The resistance between the conductive shaft and the annular metal conductive roller is less than 0.2Ω; the potential difference between the two ends of the annular metal conductive roller is less than 0.1V.

5. The conductive device according to claim 1, characterized in that: The annular metal conductive roller includes a copper annular metal conductive roller, a titanium annular metal conductive roller or a nickel annular metal conductive roller.

6. The conductive device according to claim 1, characterized in that: The fixing method of the conductive shaft and the annular metal conductive roller includes a plug-in buckle connection or a rotary buckle connection.

7. The conductive device according to claim 1, characterized in that: The outer peripheral surface of the annular metal conductive roller is provided with threads or mesh patterns.

8. The conductive device according to claim 1, characterized in that: It also includes an insulating fixing piece fixed to the end of the annular metal conductive roller; a sealing ring is arranged between the insulating fixing piece and the annular metal conductive roller.

9. A horizontal electroplating device, characterized in that: The horizontal electroplating equipment comprises the conductive device described in any one of claims 1 to 8.

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