Flexible contact electroplating hanger for solar cells

Abstract

The utility model discloses a flexible contact electroplating hanger for solar cells. The flexible contact electroplating hanger comprises a bearing frame, a conductive device and an electroplated part fixing device, the bearing frame is provided with an open groove used for containing a plated part in the thickness direction of the bearing frame, a fixed conductive supporting point is arranged in the open groove, and the plated part fixing device is installed above the fixed conductive supporting point, provided with an elastic probe opposite to the fixed conductive supporting point and used for jointly clamping the plated part. A lifting power assembly is arranged below the bearing frame, penetrates through the bearing frame to be in contact with the plated part fixing device and is used for moving the plated part fixing device up and down; the conductive device is mounted on the bearing frame and is connected with the plated part fixing device; according to the electroplating hanger, the clamping piece mode of a traditional electroplating hanger is improved, the problem that the existing electroplating hanger is broken due to overlarge local stress caused by a rigid contact clamping piece mode can be effectively solved, the production yield is improved, and the hanger is low in overall cost and convenient to popularize.

Description

Technical Field

[0001] This utility model relates to the technical field of solar cell electroplating, and in particular to a flexible contact electroplating fixture for solar cells. Background Technology

[0002] Electroplating of solar cell electrodes plays a crucial role in increasing the conductivity of grid lines and improving the photoelectric conversion efficiency of the cells. The basic working principle involves placing the solar cell in an electroplating fixture, then immersing the fixture in an electroplating solution. An electric current is then applied to the fixture and the metal anode device. Ultimately, the metal anions in the electroplating solution undergo a reduction reaction on the plated area of ​​the solar cell, resulting in metal deposition and the formation of the grid lines.

[0003] Currently available electroplating racks all use rigid contact clamps, which leads to excessive local stress and easily causes cell breakage, seriously affecting production yield. This problem is particularly prominent as cells become thinner. Therefore, there is an urgent need to design a flexible contact electroplating rack for solar cells to solve the existing technical problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a flexible contact electroplating fixture for solar cells. This fixture solves the problem of breakage caused by excessive local stress due to the rigid contact clamping method of existing electroplating fixtures, and is particularly suitable for solving the problem of breakage of solar cells during the electroplating process.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: a flexible contact electroplating fixture for solar cells, comprising a support frame, a conductive device, and a workpiece fixing device; the support frame has multiple slots along its thickness direction for accommodating the workpiece, and fixed conductive support points are provided in the slots; the workpiece fixing device is installed above the fixed conductive support points and has elastic probes opposite to the fixed conductive support points for jointly clamping the workpiece; a lifting power assembly is provided below the support frame, which passes through the support frame and forms contact with the workpiece fixing device for moving the workpiece fixing device up and down; the workpiece fixing device has an elastic element and a fixing bolt, the bolt end of the fixing bolt passes through the workpiece fixing device and is installed on the support frame, the elastic element is sleeved on the outside of the fixing bolt, one end of the elastic element forms contact with the workpiece fixing device, and the other end of the elastic element forms contact with the nut end of the fixing bolt, for ensuring that the workpiece fixing device springs back to its original clamping position; the conductive device is installed on the support frame and connected to the workpiece fixing device.

[0006] Furthermore, the plating-bearing fixing device includes a fixing frame and conductive wires; the fixing frame is movably installed above the fixed conductive support point, and the fixing frame has a mounting position for installing an elastic probe. The elastic probe is installed in the mounting position and its tip can be opposite to the fixed conductive support point. The conductive wires are connected to the conductive device and the elastic probe respectively; the elastic element is a spring, the bolt end of the fixing bolt passes through the fixing frame and is installed on the bearing frame, the spring is sleeved on the outside of the fixing bolt, one end of the spring is in contact with the fixing frame, and the other end of the spring is in contact with the nut end of the fixing bolt.

[0007] Furthermore, the lifting power assembly includes a cylinder, a support panel, and a support rod; the cylinder is located below the support panel, and the extension rod of the cylinder is vertically connected to the support panel; one end of the support rod is connected to the support panel, and the other end of the support rod passes through the load-bearing frame and forms contact with the fixed frame.

[0008] Furthermore, the spring is a stainless steel spring.

[0009] Furthermore, the surface of the conductive wire is provided with a corrosion-resistant coating.

[0010] Furthermore, the surface of the support frame is provided with an insulating coating.

[0011] Furthermore, the surface of the elastic probe is provided with a wear-resistant coating.

[0012] Furthermore, the number of slots is 1-20.

[0013] Furthermore, there are 2 to 22 fixing devices for the plated parts, and the distance between each fixing device is equal and they are located on the same horizontal plane.

[0014] Furthermore, the plated part is a photovoltaic cell with a thickness of 80-150 μm.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0016] This invention improves the traditional clamping method of electroplating racks, effectively solving the problem of excessive local stress and breakage caused by the rigid contact clamping method of existing electroplating racks, thereby improving production yield, reducing the overall cost of the racks, and facilitating their promotion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a structural side view of the plated part fixing device, the load-bearing frame, and the lifting power assembly. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] See Figures 1 to 2 As shown, the flexible contact electroplating fixture for solar cells provided in this embodiment includes a support frame 1, a conductive device 2, and a fixture for fixing the workpiece to be plated 3.

[0022] The supporting frame is mounted on the mounting platform c. The supporting frame 1 has multiple slots 101 along its thickness direction to accommodate the workpiece to be plated. The number of slots 101 is 1-20, and the workpiece to be plated can be a photovoltaic cell with a thickness of 80-150µm. Fixed conductive support points 101a are provided within each slot 101. The workpiece fixing devices 3 are installed above the fixed conductive support points 101a, and are evenly spaced and on the same horizontal plane, with a quantity of 2-22. The device 3 includes a fixing frame 301 and a conductive wire 302. The fixing frame 301 is movably installed above the fixed conductive support point 101a. The fixing frame 301 has a mounting position for installing an elastic probe 303. The elastic probe 303 is installed in the mounting position and its tip can be opposite to the fixed conductive support point 101a for jointly clamping the workpiece a to be plated. The conductive wire 302 is connected to the conductive device 2 and the elastic probe 303 respectively. The conductive device 2 is installed on the bearing frame 1 and connected to the workpiece fixing device 3.

[0023] A lifting power assembly is provided below the supporting frame 1. The lifting power assembly passes through the supporting frame 1 and forms contact with the plated part fixing device 3, and is used to move the plated part fixing device 3 up and down. The lifting power assembly b includes a cylinder b1, a support panel b2 and a support rod b3. The cylinder b1 is located below the support panel b2, and the telescopic rod b101 of the cylinder b1 is perpendicularly connected to the support panel b2. One end of the support rod b3 is connected to the support panel b2, and the other end of the support rod b3 passes through the supporting frame 1 and forms contact with the fixing frame 301.

[0024] The plated part fixing device 3 is provided with an elastic element 304 and a fixing bolt 305. The elastic element 304 is a spring, preferably a stainless steel spring. The bolt end of the fixing bolt 305 passes through the fixing frame 301 and is installed on the bearing frame 1. The spring is sleeved on the outside of the fixing bolt 305. One end of the spring is in contact with the fixing frame 301, and the other end of the spring is in contact with the nut end of the fixing bolt 305, so as to ensure that the plated part fixing device 3 springs back to the clamping position.

[0025] The upper surface of the plated part a forms a flexible contact with the elastic probe 303, while the lower surface of the plated part a contacts the fixed conductive support point 101a, thereby completing the tight and stable clamping of the plated part a.

[0026] The load-bearing frame 1 is made of aluminum alloy, titanium, stainless steel or other composite materials with insulating coating to improve the corrosion resistance and fatigue strength of the hanger.

[0027] The surface of the elastic probe 303 is provided with a wear-resistant coating, which is made of silicon carbide or polytetrafluoroethylene to reduce frictional loss.

[0028] The fixing bracket and fixing bolts 305 in the plated part fixing device 3 are made of PE material or polytetrafluoroethylene, which have the advantages of light weight, high strength and good chemical stability. They can effectively fix the various parts of the hanger, and do not participate in the chemical reaction, thus ensuring the integrity and stability of the hanger structure.

[0029] The surface of the conductive wire 302 is coated with a corrosion-resistant coating. The wire core has excellent conductivity and can efficiently transmit current without participating in chemical reactions.

[0030] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all changes made in accordance with the shape and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A flexible contact electroplating fixture for solar cells, characterized in that: The device includes a support frame, a conductive device, and a workpiece fixing device. The support frame has multiple slots along its thickness to accommodate the workpiece, and fixed conductive support points are provided within these slots. The workpiece fixing device is installed above the fixed conductive support points and has elastic probes opposite to these support points for jointly clamping the workpiece. A lifting power assembly is located below the support frame, passing through the support frame and contacting the workpiece fixing device to move the workpiece fixing device up and down. The workpiece fixing device includes an elastic element and a fixing bolt. The bolt end of the fixing bolt passes through the workpiece fixing device and is installed on the support frame. The elastic element is sleeved on the outside of the fixing bolt, with one end contacting the workpiece fixing device and the other end contacting the nut end of the fixing bolt, ensuring that the workpiece fixing device springs back to its original clamping position. The conductive device is installed on the support frame and connected to the workpiece fixing device.

2. The flexible contact electroplating fixture for solar cells according to claim 1, characterized in that: The plated part fixing device includes a fixing frame and conductive wires; the fixing frame is movably installed above the fixed conductive support point, and the fixing frame has a mounting position for installing an elastic probe. The elastic probe is installed in the mounting position and its tip can be opposite to the fixed conductive support point. The conductive wires are connected to the conductive device and the elastic probe respectively; the elastic element is a spring, the bolt end of the fixing bolt passes through the fixing frame and is installed on the bearing frame, the spring is sleeved on the outside of the fixing bolt, one end of the spring is in contact with the fixing frame, and the other end of the spring is in contact with the nut end of the fixing bolt.

3. The flexible contact electroplating fixture for solar cells according to claim 2, characterized in that: The lifting power assembly includes a cylinder, a support panel, and a support rod; the cylinder is located below the support panel, and the extension rod of the cylinder is perpendicularly connected to the support panel; one end of the support rod is connected to the support panel, and the other end of the support rod passes through the load-bearing frame and forms contact with the fixed frame.

4. The flexible contact electroplating fixture for solar cells according to claim 2, characterized in that: The spring is a stainless steel spring.

5. A flexible contact electroplating fixture for solar cells according to claim 2, characterized in that: The surface of the conductive wire is provided with a corrosion-resistant coating.

6. The flexible contact electroplating fixture for solar cells according to claim 1, characterized in that: The surface of the support frame is provided with an insulating coating.

7. The flexible contact electroplating fixture for solar cells according to claim 1, characterized in that: The surface of the elastic probe is coated with a wear-resistant coating.

8. The flexible contact electroplating fixture for solar cells according to claim 1, characterized in that: The number of slots is 1-20.

9. A flexible contact electroplating fixture for solar cells according to claim 1, characterized in that: There are 2 to 22 fixing devices for the plated parts, and the distance between each fixing device is equal and they are located on the same horizontal plane.

10. A flexible contact electroplating fixture for solar cells according to claim 1, characterized in that: The plated part is a photovoltaic cell with a thickness of 80-150um.

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