Infrared hot welding structure

Abstract

The infrared hot welding structure comprises an infrared lifting module, an infrared welding frame, an air pipe and pressing rods, the infrared welding frame is installed at the driving end of the infrared lifting module, the multiple pressing rods are distributed in the infrared welding frame in the vertical direction in a matrix arrangement mode, and springs are connected to the upper ends of the pressing rods; the springs are elastically connected with the infrared welding frame, the lower ends of the pressing rods are connected with ceramic pressing discs, infrared lamps are fixed in the infrared welding frame and located between the pressing rods, the air pipes are located on the periphery of the infrared welding frame, air outlet cavities are formed in the front side and the rear side of the infrared welding frame, and the air pipes are communicated with the air outlet cavities. According to the infrared hot welding structure, the high-temperature-resistant ceramic pressing disc is pressed on a silicon wafer needing hot welding through the elastically-installed pressing rod, the silicon wafer is fixed in an auxiliary mode, an infrared lamp can conduct heating welding on a welding point and a welding wire conveniently, pressure is ensured, meanwhile, air is blown forwards and backwards to form an air wall, and the internal heating condition is protected against external influences.

Description

Technical Field

[0001] The present invention relates to the technical field of silicon wafer string soldering, and in particular to an infrared thermal welding structure. Background Art

[0002] Photovoltaic solar silicon wafers are the core part of a solar power generation system and also the most valuable part of a solar power generation system. The function of the silicon wafer is to convert solar energy into electrical energy, which is stored by a storage battery or directly used to power a load. In a BC cell (fully called a back contact cell, which can be combined with multiple routes), when the silicon wafers are string soldered, the solder joints on the silicon wafers and the welding wires at the current position are heated at high temperature to weld them together. The conventional structure has poor ventilation effect and the silicon wafers have no stabilizing effect. Summary of the Invention

[0003] An object of the present invention is to provide an infrared thermal welding structure, which presses a high-temperature-resistant ceramic pressing plate on the silicon wafer through an elastic pressing rod for stabilization, performs high-temperature thermal welding by an infrared lamp, and forms a wind wall by the front and rear air outlet cavities to protect the interior.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] An infrared thermal welding structure includes an infrared lifting module, an infrared welding frame, an air duct and a pressing rod. The infrared welding frame is installed on the driving end of the infrared lifting module. A plurality of the pressing rods are distributed vertically inside the infrared welding frame in a matrix arrangement. A spring is connected to the upper end of the pressing rod, and the spring is elastically connected to the infrared welding frame. A ceramic pressing plate is connected to the lower end of the pressing rod. An infrared lamp is fixed inside the infrared welding frame, and the infrared lamp is located between the pressing rods. The air duct is located around the infrared welding frame. The front and rear sides of the infrared welding frame each have an air outlet cavity, and the air duct is communicated with the air outlet cavity.

[0006] As a preferred technical solution, a mounting plate is installed inside the infrared welding frame. The middle part of the pressing rod passes through the mounting plate, and the spring is located above the mounting plate.

[0007] As a preferred technical solution, blowing holes are provided on the mounting plate, and the blowing holes are located between the pressing rods. Blowing channels are distributed inside the infrared welding frame, and the blowing channels are communicated with the blowing holes.

[0008] As a preferred technical solution, an exhaust fan is installed at the upper end of the infrared welding frame.

[0009] As a preferred technical solution, a wind guide plate is provided at the lower end of the air outlet cavity, and a wind guide hole is formed between the inner side of the wind guide plate and the lower end of the infrared welding frame.

[0010] As a preferred technical solution, a lifting motor is provided on the infrared lifting module. The driving end of the lifting motor is connected to a lifting screw rod. The upper end of the infrared welding frame is connected with a lifting nut, and the lifting screw rod is in threaded transmission connection with the lifting nut.

[0011] As a preferred technical solution, a lifting slide rail is provided on the infrared lifting module, and a lifting slider is provided at the upper end of the infrared welding frame. The lifting slider slides on the lifting slide rail.

[0012] As a preferred technical solution, an electric control box is fixed at the upper end of the infrared welding frame.

[0013] The beneficial effects of the present invention are as follows: An infrared thermal welding structure is provided. In this infrared thermal welding structure, a high-temperature-resistant ceramic pressing plate is pressed on the silicon wafer to be thermally welded through an elastically installed pressing rod to assist in fixing the silicon wafer, facilitating the infrared lamp to heat and weld the solder joints and welding wires. While ensuring the pressure, air is blown from the front and back to form an air wall to protect the internal heating condition from being affected by the outside. Description of the Drawings

[0014] The following further describes the present invention in detail according to the drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the overall structure of an infrared thermal welding structure described in the embodiment;

[0016] Figure 2 It is a partial three-dimensional view of an infrared thermal welding structure described in the embodiment;

[0017] Figure 3 It is a partial cross-sectional view of an infrared thermal welding structure described in the embodiment.

[0018] Figures 1 to 3 Among them:

[0019] 1. Infrared lifting module; 2. Infrared welding frame; 3. Air duct; 4. Pressing rod; 5. Spring; 6. Ceramic pressing plate; 7. Infrared lamp; 8. Air outlet cavity; 9. Mounting plate; 10. Air blowing hole; 11. Air blowing channel; 12. Exhaust fan; 13. Wind guide plate; 14. Wind guide hole; 15. Lifting motor; 16. Electric control box. Detailed Embodiment

[0020] The following further illustrates the technical solutions of the present invention in conjunction with the drawings and specific embodiments.

[0021] As shown inFigures 1 to 3 As shown in the figure, in this embodiment, an infrared thermal welding structure includes an infrared lifting module 1, an infrared welding frame 2, an air duct 3, and a pressure rod 4. The infrared welding frame 2 is installed on the driving end of the infrared lifting module 1. A number of pressure rods 4 are distributed vertically inside the infrared welding frame 2 in a matrix arrangement. A spring 5 is connected to the upper end of the pressure rod 4, and the spring 5 is elastically connected to the infrared welding frame 2. A ceramic pressure plate 6 is connected to the lower end of the pressure rod 4. An infrared lamp 7 is fixed inside the infrared welding frame 2, and the infrared lamp 7 is located between the pressure rods 4. The air duct 3 is located around the infrared welding frame 2. Air outlet cavities 8 are provided on the front and rear sides of the infrared welding frame 2, and the air duct 3 is communicated with the air outlet cavities 8.

[0022] Place the silicon wafer with welding wire under the infrared welding frame 2. Driven by the infrared lifting module 1, the infrared welding frame 2 moves downward. The ceramic pressure plate 6 presses beside the welding point of the silicon wafer, and the spring 5 starts to contract to ensure that each ceramic pressure plate 6 can fix and press the silicon wafer. Then the infrared lamp 7 is turned on to perform high-temperature thermal welding on the welding point position on the silicon wafer, so that the welding wire under the silicon wafer melts onto the silicon wafer. At the same time, during the thermal welding process, the air duct 3 provides wind power. Under the action of the air outlet cavity 8, a wind wall is formed at the front and rear ends of the infrared welding frame 2, and the outside cannot affect the internal heating situation.

[0023] An installation plate 9 is installed inside the infrared welding frame 2. The middle part of the pressure rod 4 passes through the installation plate 9, and the spring 5 is located above the installation plate 9. The pressure rod 4 is extruded and rises under the action of the silicon wafer, and the spring 5 contracts above the installation plate 9. When the silicon wafer does not contact the pressure rod 4, the upper end of the pressure rod 4 is stuck on the installation plate 9 and will not fall off.

[0024] Blowing holes 10 are provided on the installation plate 9, and the blowing holes 10 are located between the pressure rods 4. Blowing channels 11 are distributed inside the infrared welding frame 2, and the blowing channels 11 are communicated with the blowing holes 10. The blowing holes 10 blow air inside the infrared welding frame 2 to accelerate the process of thermal welding forming.

[0025] An exhaust fan 12 is installed at the upper end of the infrared welding frame 2, and the exhaust fan 12 is responsible for exhausting air from above the infrared welding frame 2.

[0026] A wind guiding plate 13 is provided at the lower end of the air outlet cavity 8. A wind guiding hole 14 is formed between the inner side of the wind guiding plate 13 and the lower end of the infrared welding frame 2. The air duct 3 blows air into the air outlet cavity 8. Under the guidance of the wind guiding plate 13, the air blows downward from the wind guiding hole 14, thereby forming a wind wall in the vertical direction to protect the internal heating situation of the infrared welding frame 2.

[0027] An infrared lifting module 1 is provided with a lifting motor 15. The driving end of the lifting motor 15 is connected with a lifting screw rod. The upper end of an infrared welding frame 2 is connected with a lifting nut. The lifting screw rod is in threaded transmission connection with the lifting nut. The infrared lifting module 1 is provided with a lifting slide rail. The upper end of the infrared welding frame 2 is provided with a lifting slider which slides on the lifting slide rail. When hot welding is required, the lifting motor 15 provides power to make the lifting screw rod rotate, and the infrared welding frame 2 with the lifting nut descends along the lifting slide rail, and then the ceramic pressing plate 6 can press on the silicon wafer. When the hot welding is over, the infrared welding frame 2 rises, and the pressing rod 4 drives the ceramic pressing plate 6 to leave the silicon wafer, and then the silicon wafer can be output and taken away.

[0028] An electric control box 16 is fixed to the upper end of the infrared welding frame 2. The electric control box 16 is responsible for electrically controlling the above actions to complete the automation process.

[0029] It should be noted that the above specific embodiments are only the preferred embodiments of the present invention and the technical principles applied. Within the technical scope disclosed by the present invention, any changes or substitutions that are easily conceivable by those skilled in the art should be covered by the protection scope of the present invention.

Claims

1. An infrared thermal welding structure, characterized in that It includes an infrared lifting module, an infrared welding frame, an air duct and a pressure rod. The infrared welding frame is installed on the driving end of the infrared lifting module. A number of the pressure rods are distributed vertically inside the infrared welding frame in a matrix arrangement. A spring is connected to the upper end of the pressure rod, and the spring is elastically connected to the infrared welding frame. A ceramic pressure plate is connected to the lower end of the pressure rod. An infrared lamp is fixed inside the infrared welding frame, and the infrared lamp is located between the pressure rods. The air duct is located around the infrared welding frame. There are air outlet cavities on both the front and rear sides of the infrared welding frame, and the air duct is communicated with the air outlet cavity.

2. The infrared thermal welding structure according to claim 1, characterized in that, An installation plate is installed inside the infrared welding frame. The middle part of the pressure rod passes through the installation plate, and the spring is located above the installation plate.

3. The infrared thermal welding structure according to claim 2, wherein, Blowing holes are provided on the installation plate, and the blowing holes are located between the pressure rods. Blowing channels are distributed inside the infrared welding frame, and the blowing channels are communicated with the blowing holes.

4. An infrared thermal welding structure according to claim 1, characterized in that, An exhaust fan is installed at the upper end of the infrared welding frame.

5. An infrared thermal welding structure according to claim 1, characterized in that, A wind guiding plate is provided at the lower end of the air outlet cavity. A wind guiding hole is formed between the inner side of the wind guiding plate and the lower end of the infrared welding frame.

6. The infrared thermal welding structure according to claim 1, characterized in that, A lifting motor is provided on the infrared lifting module. The driving end of the lifting motor is connected with a lifting screw rod. The upper end of the infrared welding frame is connected with a lifting nut, and the lifting screw rod is in threaded transmission connection with the lifting nut.

7. The infrared thermal welding structure according to claim 1, wherein, A lifting slide rail is provided on the infrared lifting module. A lifting slide block is provided at the upper end of the infrared welding frame, and the lifting slide block slides on the lifting slide rail.

8. An infrared thermal welding structure according to claim 1, characterized in that, An electric control box is fixed at the upper end of the infrared welding frame.

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