Battery piece secondary tin melting prevention device for photovoltaic module stitch welding machine

Abstract

The utility model discloses a battery piece secondary tinning prevention device for a photovoltaic module stitch welding machine. The battery piece secondary tinning prevention device comprises air blowing mechanisms arranged on the two sides of a welding head of the stitch welding machine respectively. The two blowing mechanisms are used for obliquely blowing and cooling a welding strip reserved at a welding head pressing needle of the stitch welding machine, and the vertical height of each blowing mechanism can be adjusted. The height-adjustable blowing mechanisms are arranged on the two sides of the welding head of the stitch welding machine, the welding strip reserved at the pressing needle position of the welding head is obliquely blown and cooled, heat generated in the welding process can be rapidly taken away, the secondary tin melting phenomenon of battery pieces after welding is effectively prevented, and the welding quality and the yield of photovoltaic modules are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the solar cell module manufacturing field especially is related to a prevent battery piece secondary tin device for photovoltaic module stacker. BACKGROUND

[0002] In the production process of solar photovoltaic module, several battery strings of the same specification are arranged on the glass plate, and the first and last ends of the battery string are connected correctly through the bus bar, and the battery string is welded together with the bus bar through professional equipment, which is called stack welding process in the module factory, and the equipment for welding the bus bar and the battery string is called stacker.

[0003] At present, the existing stacker is used for stack welding of battery pieces with relatively low welding process temperature requirements, such as heterojunction battery pieces and low-melting-point silver paste battery pieces, and the heat generated by heating the bus bar during stack welding is conducted through the bus bar and the solder strip, which often causes the first row of battery pieces near the bus bar to melt and separate from the solder strip.

[0004] Therefore, it is necessary to design a prevent battery piece secondary tin device for photovoltaic module stacker to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiency of prior art, and provides a prevent battery piece secondary tin device for photovoltaic module stacker.

[0006] The technical scheme of the utility model is: a prevent battery piece secondary tin device for photovoltaic module stacker, comprising blowing mechanisms respectively arranged on both sides of the welding head of the stacker.

[0007] The blowing mechanism comprises a blowing seat, the middle part of the blowing seat is provided with an air inlet hole along the length direction, the two ends of the air inlet hole are connected with a gas supply mechanism, the bottom surface of the blowing seat is provided with a slope at the connection with the side surface facing the welding head, and a plurality of air outlet holes are densely arranged on the length direction of the slope and communicated with the air inlet hole.

[0008] The air inlet hole is provided with a thread at the orifice of the two ends.

[0009] The gas supply mechanism comprises a gas source, the gas source is connected with the two ends of the air inlet hole through a gas supply pipe, and a throttle valve, a pressure valve and an electromagnetic valve are sequentially arranged on the gas supply pipe.

[0010] The blowing seat is connected with the welding head of the butt welding machine through a mounting plate; the mounting plate is fixedly connected with the welding head of the butt welding machine; the blowing seat is slidably connected with the mounting plate; and the mounting plate is rotatably connected with adjusting screw rods at two ends thereof and threadedly connected with the blowing seat at two ends thereof.

[0011] The blowing seat is 1300mm long, 15mm wide and 15mm high.

[0012] The diameter of the air inlet hole is 8mm.

[0013] The diameter of the air outlet hole is 0.6mm, and the distance between two adjacent blowing holes is 5mm.

[0014] With the above technical scheme, the utility model has the following beneficial effects: (1) the utility model discloses a blowing mechanism with adjustable height which is arranged on both sides of the welding head of the butt welding machine, and the welding strip reserved at the pressing needle of the welding head is obliquely blown and cooled, so that the heat generated in the welding process can be quickly removed, the secondary tin phenomenon of the battery piece after welding can be effectively prevented, and the welding quality and the yield of the photovoltaic module are improved.

[0015] (2) the blowing mechanism of the utility model is designed as a blowing seat, the bottom surface and the side surface connected with the welding head pressing needle are provided with inclined surfaces, the inclined surfaces are densely provided with air outlet holes which are communicated with air inlet holes, the design makes the blown air flow more uniform and covers a wide range, the welding strip reserved at the pressing needle of the welding head can be better cooled, and the influence on the surrounding environment is reduced.

[0016] (3) the upper and lower heights of the blowing mechanism of the utility model can be adjusted through the adjusting screw rods, so that the device can adapt to photovoltaic modules with different specifications and thicknesses, and the versatility and flexibility of the device are improved.

[0017] (4) the air supply mechanism of the utility model comprises an air supply source, an air supply pipe and control elements such as a throttle valve, a pressure valve and an electromagnetic valve, so that the blowing air flow can be accurately controlled, and the blowing and cooling effect is stable and reliable.

[0018] (5) the blowing mechanism of the utility model is simple and clear in design, the components are closely connected and easy to disassemble, and daily maintenance and fault troubleshooting are facilitated.

[0019] (6) the size parameters of the blowing seat, the air inlet hole and the air outlet hole are optimized and designed, so that the efficiency and effect of the blowing air flow are ensured, and the compactness and light weight of the device are maintained. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the content of the utility model more easily understood, the utility model will be further described in detail in the following according to specific embodiments and in combination with the drawings.

[0021] Figure 1 It is a structure schematic view of the blowing mechanism of the utility model.

[0022] The reference signs in the drawings are:

[0023] Blowing mechanism 1, blowing seat 1-1, air inlet hole 1-2, inclined surface 1-3, air outlet hole 1-4. Specific implementation

[0024] (Example 1)

[0025] See Figure 1 The device for preventing battery pieces from being tin-coated again for the photovoltaic module stitch welding machine comprises blowing mechanisms 1 arranged on both sides of the welding head of the stitch welding machine respectively; the blowing mechanisms 1 are used for blowing and cooling the reserved solder strips obliquely towards the pin pressing part of the welding head of the stitch welding machine, and the height of each blowing mechanism 1 can be adjusted.

[0026] Further, the blowing mechanism 1 comprises a blowing seat 1-1; the middle part of the blowing seat 1-1 is provided with an air inlet hole 1-2 along the length direction thereof; the two ends of the air inlet hole 1-2 are connected with a gas supply mechanism; the bottom surface of the blowing seat 1-1 is provided with an inclined surface 1-3 at the connection with the side surface of the blowing seat 1-1 facing the pin pressing part of the welding head; the inclined surface 1-3 is densely provided with a plurality of air outlet holes 1-4 along the length direction thereof, which are in communication with the air inlet hole 1-2. The design of the present embodiment makes the blown air flow more uniform and covers a wider range, so that the pin pressing part of the welding head can be better cooled, and the influence on the surrounding environment is reduced.

[0027] Further, the air inlet hole 1-2 is provided with threads at the orifices of the two ends thereof, so as to facilitate the connection of the air inlet hole 1-2 with the gas supply mechanism.

[0028] Further, the gas supply mechanism comprises a gas supply source; the gas supply source is connected with the two ends of the air inlet hole 1-2 through a gas supply pipe; the gas supply pipe is sequentially provided with a throttle valve, a pressure valve and an electromagnetic valve, so as to realize the accurate control of the blowing air flow and ensure the stability and reliability of the blowing and cooling effect.

[0029] Further, the blowing seat 1-1 is connected with the welding head of the stitch welding machine through a mounting plate; the mounting plate is fixedly connected with the welding head of the stitch welding machine; the blowing seat 1-1 is slidably connected with the mounting plate; the two ends of the mounting plate are respectively rotatably connected with adjusting screws which are threadedly connected with the two ends of the blowing seat 1-1, so that the height of the blowing mechanism 1 can be adjusted through the adjusting screws, and the device can adapt to photovoltaic modules of different specifications and thicknesses, thereby improving the versatility and flexibility of the device.

[0030] Further, the blowing seat 1-1 is 1300 mm long, 15 mm wide and 15 mm high.

[0031] Further, the diameter of the air inlet hole 1-2 is 8mm.

[0032] Further, the diameter of the air outlet hole 1-4 is 0.6mm, and the distance between two adjacent air outlet holes is 5mm.

[0033] The size parameters of the air blowing seat 1-1, the air inlet hole 1-2 and the air outlet hole 1-4 are optimized and designed, so as to ensure the efficiency and effect of the air blowing flow, and meanwhile, the compactness and light weight of the device are maintained.

[0034] The tin preventing device for the battery piece secondary soldering of the photovoltaic module welding machine can effectively prevent the secondary soldering of the battery piece in the welding process, improve the welding quality and the yield of the photovoltaic module, and has the advantages of simple structure, easy maintenance and strong adaptability, and has high practical value and wide application prospect.

[0035] The above specific embodiments further specifically describe the purpose, technical scheme and beneficial effects of the utility model, and it should be understood that the above description is only for the specific embodiments of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for preventing secondary soldering of a cell for a photovoltaic module stacker, characterized by: The application relates to a welding head air blowing mechanism for a lap welding machine, which comprises two air blowing mechanisms (1) arranged on the two sides of the welding head of the lap welding machine respectively; the two air blowing mechanisms (1) are used for obliquely blowing and cooling the reserved welding strip at the pressing needle of the welding head of the lap welding machine, and the height of each air blowing mechanism (1) can be adjusted; the air blowing mechanism (1) comprises an air blowing base (1-1); the middle part of the air blowing base (1-1) is provided with an air inlet hole (1-2) along the length direction; the two ends of the air inlet hole (1-2) are connected with air supply mechanisms; the bottom surface of the air blowing base (1-1) is provided with a slope (1-3) at the joint with the side surface of the air blowing base (1-1) facing the pressing needle of the welding head; a plurality of air outlet holes (1-4) are densely arranged on the slope (1-3) along the length direction and are communicated with the air inlet hole (1-2).

2. The device for preventing the secondary use of tin according to claim 1, wherein: The air inlet hole (1-2) is provided with threads at the orifices of the two ends.

3. The device for preventing the secondary use of tin according to claim 1, wherein: The air supply mechanism comprises an air supply source; the air supply source is connected with the two ends of the air inlet hole (1-2) through air supply pipes; the air supply pipes are sequentially provided with a throttle valve, a pressure valve and an electromagnetic valve.

4. The device for preventing the secondary use of tin according to claim 1, wherein: The air blowing base (1-1) is connected with the welding head of the lap welding machine through a mounting plate; the mounting plate is fixedly connected with the welding head of the lap welding machine; the air blowing base (1-1) is slidably connected with the mounting plate; the two ends of the mounting plate are respectively rotatably connected with adjusting screws which are threadedly connected with the two ends of the air blowing base (1-1).

5. The device for preventing the secondary use of tin according to claim 1, wherein: The air blowing base (1-1) is 1300mm long, 15mm wide and 15mm high.

6. The device for preventing the secondary use of tin according to claim 1, wherein: The diameter of the air inlet hole (1-2) is 8mm.

7. The device for preventing the secondary use of tin according to claim 1, wherein: The diameter of the air outlet hole (1-4) is 0.6mm, and the distance between two adjacent air blowing holes is 5mm.

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