Photovoltaic cell string film covering device

Abstract

The utility model discloses a photovoltaic cell string film covering device, and belongs to the technical field of photovoltaic cell strings. The photovoltaic cell string film coating device comprises a bottom plate and a transmission mechanism, the transmission mechanism is mounted on the bottom plate, the photovoltaic cell string film coating device further comprises a first heating device and a rolling device, the first heating device and the rolling device are sequentially mounted in the advancing direction of the transmission mechanism, the rolling device comprises a coating roller, and the coating roller is mounted on the transmission mechanism. And the pasting roller is used for smoothing a covering film of the battery string. The device provided by the utility model is used for solving the quality problems of the head part and the tail part of each film of the film-coated battery string.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell strings, in particular to a photovoltaic cell string coating device. Background Art

[0002] Photovoltaic cells are made into photovoltaic modules through serial connection and lamination packaging. Welding the cells into strings is a major process. The serial connection of cells directly affects the performance of the modules and the production speed of the modules.

[0003] During the lamination process of the string welding equipment, the back film of the battery string is in close contact with the stepping conveyor belt, so the lamination effect is better. However, since the press needs to be hollowed out to allow infrared light to pass through, and the press cannot fully cover the film, the head and tail of the film corresponding to each battery will have curling, warping, wavy lines, etc.

[0004] As attached Figure 1 As shown, the film-coated battery string 102 includes a photovoltaic cell sheet 101, and the film-coated battery string 102 is also superimposed with a front film 103, a back film 104, and a welding strip 107. Figure 1 It can be seen that the head 105 and the tail 106 of the film of the film-coated battery string processed by the prior art have obvious curling and warping.

[0005] The Chinese utility model patent, CN216993066U, discloses a photovoltaic module film smoothing device, which can solve the problem of shrinkage and wrinkles inside the film, but cannot solve the quality problems at the head and tail of the film. Utility Model Content

[0006] In the above background, the utility model proposes a photovoltaic cell string coating device, comprising a base plate and a transmission mechanism, the transmission mechanism is installed on the base plate, the photovoltaic cell string coating device also includes a first heating device and a rolling device, the first heating device and the rolling device are sequentially installed in the travel direction of the transmission mechanism, the rolling device includes a coating roller, and the coating roller is used to smooth the coating of the cell string.

[0007] The idea of ​​the utility model is to solve the problems of curling and wavy warping of the head and tail of each film in the film-coated battery string by adding a device to the string welding equipment, and add a mechanism after the battery string is interconnected and welded to the film. The mechanism first heats the film and battery on the front side of the battery string by an infrared heating device, and the battery string is transported backward by a conveying mechanism. When the battery string passes through the coating roller, the driving cylinder drives the coating roller to roll back and forth. Since the infrared heating device heats the coating and the battery at the same time, the coating is tightly attached to the front side of the battery under the pressure of the coating roller.

[0008] Preferably, the coating roller is installed on the base plate through a guide rail device, the guide rail device includes a linear guide rail and a coating roller base, the linear guide rail is installed on the base plate, the coating roller base is movably installed on the linear guide rail, and the coating roller base is connected to the coating roller.

[0009] Preferably, the guide rail device further comprises a driving cylinder, wherein the driving cylinder is mounted on a side of the base plate and a piston rod of the driving cylinder is connected to the roller base.

[0010] Preferably, the photovoltaic cell string coating device further comprises a second heating device, and the second heating device is mounted on a coating roller base.

[0011] Preferably, the second heating device comprises an infrared heating lamp.

[0012] Preferably, a heating lampshade is provided above the infrared heating lamp tube.

[0013] Preferably, the first heating device comprises an infrared heating light box.

[0014] Preferably, the infrared heating light box is installed on the base plate through a light box bracket.

[0015] Preferably, the driving end of the transmission mechanism is mounted on a side of the bottom plate close to the first heating device.

[0016] Preferably, the photovoltaic cell string coating device also includes a press tool.

[0017] The beneficial effect of the utility model is that compared with the prior art, the photovoltaic cell string coating device of the utility model solves the problems of curling and wavy warping of the head and tail of each film of the coated cell string by adding a device to the string welding equipment. First, the first infrared heating device heats the film and battery on the front of the cell string. After the heating is completed, the transmission mechanism sends the cell string to the coating roller position, and the driving cylinder drives the coating roller to roll back and forth. Under the pressure of the coating roller, the coating is tightly attached to the front of the battery. By further setting up a second heating device, heating is performed during the rolling back and forth of the coating roller, so as to improve the adhesion between the coating and the front of the battery, and completely avoid the quality problems at the head and tail of each film of the coated cell string. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram showing quality problems of photovoltaic cell strings in the background art;

[0019] Figure 2 The overall structural schematic diagram of the photovoltaic cell string coating device is shown;

[0020] Figure 3 A schematic structural diagram of a rolling device and a guide rail device is shown.

[0021] The reference numerals are as follows:

[0022] 1. Bottom plate, 2. Transmission mechanism, 3. Press tooling, 4. Infrared heating light box, 5. Film-coated battery string, 6. Photovoltaic cell sheet, 7. Welding strip, 8. Front film coating, 9. Back film coating, 10. Driving cylinder, 11. Heating lampshade, 12. Infrared heating lamp tube, 13. Laminating roller, 14. Linear guide rail, 15. Laminating roller base, 16. Light box bracket;

[0023] 101. Photovoltaic cell, 102. Film-coated cell string, 103. Front film coating, 104. Back film coating, 105. Head, 106. Tail, 107. Welding strip. DETAILED DESCRIPTION

[0024] The photovoltaic cell string coating device of the present invention is described in detail below with reference to the accompanying drawings.

[0025] The film-coated battery string 6 is formed by stacking photovoltaic battery sheets 6 through welding strips 7. The film-coated battery string 6 is provided with a non-self-adhesive front film 8 and a back film 9. Under the processing technology of the existing technology, the head and tail of the film are prone to quality problems such as curling, warping, and wavy lines. The utility model is designed to solve this problem.

[0026] Figure 2 It is a schematic diagram of the overall structure of the photovoltaic cell string coating device of the utility model.

[0027] The photovoltaic cell string coating device comprises a base plate 1 and a transmission mechanism 2. The transmission mechanism 2 is installed on the base plate 1. The photovoltaic cell string to be processed moves on the base plate 1 through the cyclic stepping of the transmission mechanism.

[0028] In this embodiment, the driving end of the transmission mechanism 2 including the stepping motor and the rotating shaft is installed on the initial end side of the base plate 1 .

[0029] In the traveling direction of the transmission mechanism 2, a first heating device and a rolling device are arranged in sequence.

[0030] Specifically, the first heating device is an infrared heating light box 4 , which is mounted on the bottom plate through a light box bracket 16 and is used to heat and soften the front film 8 of the film-coated battery string 5 .

[0031] In the photovoltaic cell string coating device of this embodiment, a press tool 3 is provided, and the function of the press tool 3 is to press each stacked cell sheet, welding strip and coating film to fix the cell, welding strip and coating film and prevent them from shifting during the conveying process of the conveying mechanism 2. After the press tool 3 completes the fixation and shaping, the press tool 3 is removed, and the conveying mechanism 2 conveys the cell string to the rolling device.

[0032] The rolling device includes a coating roller 13. The function of the coating roller 13 is to make the front coating 8 closely adhere to the front surface of the battery by rolling back and forth.

[0033] Figure 3 It is a schematic diagram of the structure of the rolling device and the guide rail device in this embodiment, and is only displayed as a feasible solution. The photovoltaic cell string coating device provided by the utility model is not limited to this structural form.

[0034] Figure 3 In the embodiment, the guide rail device is composed of a linear guide rail 14 and a coating roller base 15. The linear guide rail 14 is installed on the base plate 1, and the coating roller base 15 is movably connected with the linear guide rail 14, and the coating roller base 15 can slide back and forth on the linear guide rail 14.

[0035] The coating roller 13 is installed on the coating roller base 15 and is moved forward and backward by the coating roller base 15. The installation height of the coating roller 13 should be sufficient to crush the battery string when it rolls back and forth.

[0036] In order to drive the coating roller base 15, a driving cylinder 10 is installed on the side of the bottom plate 1, and the piston rod of the driving cylinder 10 is connected to the coating roller base 15. The coating roller base 15 can be moved forward and backward by the extension and retraction action of the piston rod of the driving cylinder 10.

[0037] As an improvement of this embodiment, a second heating device is also provided in the photovoltaic cell string coating device. The second heating device is used to heat the coating while the coating roller 14 rolls the cell string back and forth, so that the coating is more tightly coated.

[0038] The second heating device is an infrared heating lamp tube 12, which is installed on the coating roller base 15 and moves synchronously with the coating roller 13. A heating lamp cover 11 is also arranged above the infrared heating lamp tube.

[0039] In this embodiment, the heating and softening of the infrared heating light box 4 and the combined effect of the infrared heating lamp tube 12 and the laminating roller 13 allow the laminating film to be tightly attached to the battery cell, thus completely preventing the occurrence of head and tail quality problems.

[0040] The operation process of the photovoltaic cell string coating device of this embodiment is as follows:

[0041] First, place the back film 9 on the bottom plate 1, pull and lay the welding tape 7, place the photovoltaic cell 6, place the front film 8 and place the press tool 3, the transmission mechanism 2 moves forward, the infrared heating light box 4 turns on the infrared lamp for heating, and completes the battery interconnection stringing and film coating in sequence. After removing the press tool 3, the transmission mechanism 2 continues to drive the battery string forward, and the filmed battery string passes through the infrared heating lamp 12 to heat and soften the front film 8 of the battery string. The driving cylinder 10 drives the infrared heating lamp 12 and the coating roller 13 to roll the front film 8 of the battery string back and forth, and the front film 8 of the battery is attached tightly to the battery cell, solving the problem of curling and wavy lines at the head and tail of the front film 8 of the battery string.

[0042] The above description of the proposed embodiments enables those skilled in the art to implement or use the utility model. It should be understood that the features disclosed in the above embodiments can be used alone or in combination, except where otherwise specified. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model disclosed herein is not limited to the specific embodiments disclosed, but is intended to cover modifications within the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A photovoltaic cell string coating device, comprising a bottom plate and a transmission mechanism, characterized in that: The photovoltaic cell string coating device also includes a first heating device and a rolling device, which are sequentially installed in the travel direction of the transmission mechanism. The rolling device includes a coating roller, which is used to smooth the coating of the cell string.

2. The photovoltaic cell string coating device according to claim 1, characterized in that: The coating roller is installed on the bottom plate through a guide rail device, and the guide rail device includes a linear guide rail and a coating roller base. The linear guide rail is installed on the bottom plate, and the coating roller base is movably installed on the linear guide rail. The coating roller base is connected to the coating roller.

3. The photovoltaic cell string coating device according to claim 2, characterized in that: The guide rail device also includes a driving cylinder, which is installed on the side of the bottom plate and the piston rod of the driving cylinder is connected to the coating roller base.

4. The photovoltaic cell string coating device according to claim 2, characterized in that: The photovoltaic cell string coating device also includes a second heating device, which is installed on the coating roller base.

5. The photovoltaic cell string coating device according to claim 4, characterized in that: The second heating device comprises an infrared heating lamp.

6. The photovoltaic cell string coating device according to claim 5, characterized in that: A heating lampshade is arranged above the infrared heating lamp tube.

7. The photovoltaic cell string coating device according to claim 1, characterized in that: The first heating device comprises an infrared heating lamp box.

8. The photovoltaic cell string coating device according to claim 7, characterized in that: The infrared heating lamp box is installed on the bottom plate through a lamp box bracket.

9. The photovoltaic cell string coating device according to claim 1, characterized in that: The driving end of the transmission mechanism is mounted on a side of the bottom plate close to the first heating device.

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