Photovoltaic module series welding device

Abstract

The utility model discloses a photovoltaic module series welding device which comprises three parallel conveying belts used for conveying battery pieces, welding strips on the battery pieces are located between every two adjacent conveying belts, and rotating shafts are arranged above the battery pieces and between the upper belt faces and the lower belt faces of the conveying belts. And a non-contact welding gun head is further arranged above the battery piece and between the upper belt face and the lower belt face of the conveying belt, and the non-contact welding gun head is located on the side, corresponding to the conveying downstream of the conveying belt, of the rotating shaft. According to the utility model, the friction wheel and the rotating shaft are arranged to drive the electric heating roller, the electric heating roller rolls and heats on the welding strip to finish the initial melting of the welding strip and close fit with the battery piece, and then the welding strip is firmly welded on the battery piece through the non-contact welding gun head, so that the problem of insufficient welding is avoided; the problem that in the prior art, when a series welding machine applies pressure to a welding strip through a tool pressing needle to attach a battery piece, pseudo soldering exists, and current collection of a photovoltaic module is affected is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a series welding machine technical field, concretely is a kind of photovoltaic module series welding device. BACKGROUND

[0002] Photovoltaic module series welding machine is a kind of conveying welding integrated equipment specially used for series welding photovoltaic cell and solder strip, solder strip penetrates between cell, respectively extends to the upper and lower surfaces of adjacent cell, places to series welding machine and carries out the welding of solder strip and cell.

[0003] The welding of solder strip on photovoltaic cell usually adopts non-contact welding mode, since it is non-contact welding, cannot provide pressure to make solder strip and cell closely contact, in order to provide contact pressure, the pressure needle of tooling is used to apply pressure to solder strip to adhere to cell in prior art, however, the contact of pressure needle and solder strip can affect the hot melting of solder strip in contact part, even if the pressure needle is made smaller, this part will have or more or less virtual welding phenomenon, affect the current collection of photovoltaic module. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model provides a photovoltaic module series welding device to solve the problem of virtual welding affecting current collection of photovoltaic module when series welding machine adheres cell to solder strip by tooling pressure needle in prior art.

[0005] To solve the above technical problem, the utility model provides the following technical scheme:

[0006] A kind of photovoltaic module series welding device, including three parallel conveying belts for conveying cell, the solder strip on the cell is located between adjacent two conveying belts, the upper of the cell and the upper belt surface and the lower belt surface of conveying belt are all provided with rotating shaft, the electric heating roller in contact with solder strip is installed on the rotating shaft, the upper of the cell and the upper belt surface and the lower belt surface of conveying belt are also provided with non-contact welding torch head, the non-contact welding torch head is located at the side of rotating shaft corresponding to the conveying downstream of conveying belt.

[0007] Preferably, the rotating shaft is perpendicular to the conveying direction of conveying belt, and the width of the electric heating roller is less than the gap width between the adjacent two conveying belts.

[0008] Preferably, the rotating shaft surface is fixedly sleeved with a friction wheel at the position close to both ends, and the friction wheel is in contact with the top and bottom of the upper belt surface of the conveying belt, respectively.

[0009] Preferably, the diameter of the friction wheel on the top of the upper belt surface of the conveying belt is greater than the diameter of the friction wheel on the bottom of the upper belt surface of the conveying belt, and the diameter of the electric heating roller above the cell is less than the diameter of the electric heating roller below the cell.

[0010] Preferably, the electric heating roller, the friction wheel and the non-contact welding torch head are symmetrically arranged front and back, respectively.

[0011] Preferably, the non-contact welding torch head is an infrared hot melting welding torch head or a laser hot melting welding torch head.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses a friction wheel and a rotating shaft transmission electric heating roller are arranged, and the electric heating roller rolls and heats on the welding strip, and the welding strip is tightly adhered to the battery piece, and then the welding strip is firmly welded on the battery piece through the non-contact welding torch head, so that the problem of false welding is avoided without the help of a tooling pressing needle, and the problem of false welding affecting photovoltaic module current collection when the string welding machine adheres the battery piece to the welding strip through the tooling pressing needle is solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model;

[0015] Figure 2 It is the local structure schematic diagram of the utility model electric heating roller corresponding position;

[0016] Figure 3 It is the whole structure plan view of the utility model;

[0017] Figure 4 It is the side view of the utility model non-contact welding torch head corresponding position.

[0018] In the drawing: 1, battery piece;2, conveying belt;3, welding strip;4, rotating shaft;5, electric heating roller;6, non-contact welding torch head;7, friction wheel;8, composite film. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] As Figures 1-4 The utility model provides a kind of technical scheme: a kind of photovoltaic module string welding device, including three parallel conveying belts 2 for conveying battery piece 1, welding strip 3 on battery piece 1 is located between adjacent two conveying belts 2, rotating shaft 4 is arranged between the upper belt surface and the lower belt surface of conveying belt 2 and the top of battery piece 1, and rotating shaft 4 is perpendicular to the conveying direction of conveying belt 2;

[0021] The friction wheel 7 is fixedly sleeved and arranged on the surface of the rotating shaft 4 near both ends, and the friction wheel 7 is in contact with the top and bottom of the upper belt surface of the conveying belt 2 respectively, and the diameter of the friction wheel 7 on the top of the upper belt surface of the conveying belt 2 is greater than the diameter of the friction wheel 7 on the bottom of the upper belt surface of the conveying belt 2;

[0022] The electric heating roller 5 in contact with the welding belt 3 is arranged on the rotating shaft 4, the width of the electric heating roller 5 is less than the gap width between the adjacent two conveying belts 2, and the diameter of the electric heating roller 5 above the battery piece 1 is less than the diameter of the electric heating roller 5 below the battery piece 1;

[0023] The non-contact welding gun head 6 is further arranged between the upper belt surface and the lower belt surface of the conveying belt 2 and above the battery piece 1, the electric heating roller 5, the friction wheel 7 and the non-contact welding gun head 6 are symmetrically arranged respectively, the non-contact welding gun head 6 is located on the side corresponding to the downstream conveying of the conveying belt 2 of the rotating shaft 4, and the non-contact welding gun head 6 is an infrared hot melting welding gun head or a laser hot melting welding gun head.

[0024] Working principle:

[0025] The welding belt 3 is arranged to extend to the upper and lower surfaces of the adjacent battery piece 1 through the composite film 8 between the battery pieces 1 in advance, then the battery piece 1 is placed on the conveying belt 2 of the string welding machine for conveying, the conveying belt 2 drives the electric heating roller 5 to rotate through the friction wheel 7 and the rotating shaft 4, the electric heating roller 5 generates heat through power supply and rolls on the welding belt 3 at the same time, the initial melting of the welding belt 3 is completed, the welding belt 3 is tightly combined with the battery piece 1, and then the welding belt 3 is firmly welded on the battery piece 1 through the non-contact welding gun head 6, without the help of a tooling pressing needle, and the problem of false welding is avoided.

[0026] It should be noted that in the present text, terms such as "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic module string welding apparatus, characterized by: The application relates to a battery piece conveying device, which comprises three parallel conveying belts (2) for conveying battery pieces (1), a welding belt (3) on the battery piece (1) is located between two adjacent conveying belts (2), a rotating shaft (4) is arranged above the battery piece (1) and between the upper belt surface and the lower belt surface of the conveying belt (2), an electric heating roller (5) in contact with the welding belt (3) is arranged on the rotating shaft (4), a non-contact welding gun head (6) is further arranged above the battery piece (1) and between the upper belt surface and the lower belt surface of the conveying belt (2), and the non-contact welding gun head (6) is located on the side downstream of the rotating shaft (4) corresponding to the conveying direction of the conveying belt (2).

2. The photovoltaic module string welding apparatus of claim 1, wherein: The rotating shaft (4) is perpendicular to the conveying direction of the conveying belt (2), and the width of the electric heating roller (5) is smaller than the gap width between the two adjacent conveying belts (2).

3. The photovoltaic module string welding apparatus of claim 1, wherein: A friction roller (7) is fixedly sleeved and arranged on the rotating shaft (4) at a position close to the two ends of the surface of the rotating shaft (4), and the friction roller (7) is in contact with the top and the bottom of the upper belt surface of the conveying belt (2) respectively.

4. The photovoltaic module string welding apparatus of claim 3, wherein: The diameter of the friction roller (7) on the top of the upper belt surface of the conveying belt (2) is greater than the diameter of the friction roller (7) on the bottom of the upper belt surface of the conveying belt (2), and the diameter of the electric heating roller (5) above the battery piece (1) is smaller than the diameter of the electric heating roller (5) below the battery piece (1).

5. The photovoltaic module string welding apparatus of claim 4, wherein: The electric heating roller (5), the friction roller (7) and the non-contact welding gun head (6) are symmetrically arranged respectively.

6. The photovoltaic module string welding apparatus of claim 1, wherein: The non-contact welding gun head (6) is an infrared hot melting welding gun head or a laser hot melting welding gun head.

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