Gluing glue head for photovoltaic module

Abstract

The utility model discloses a photovoltaic module gluing glue head which comprises a glue outlet end, the free end of the glue outlet end is provided with a beveled part, the glue outlet end is further provided with a first side wall opposite to the beveled part and a second side wall opposite to the first side wall, a flat glue outlet is limited between the first side wall and the second side wall, the edge of the first side wall is provided with a first notch, and the edge of the second side wall is provided with a second notch. The edge of the second side wall is provided with a second notch, and the area of the first notch is smaller than that of the second notch. The second gap increases the glue output amount to the back surface of the photovoltaic module during the gluing period, so that the glue overflow effect of the back surface of the photovoltaic module is improved. The first gap properly increases the glue output amount to the front surface of the photovoltaic module during gluing, and reduces the glue shortage proportion of the glue overflow groove in the front surface of the photovoltaic module. After gluing, the amount of glue distributed on the front face and the back face is appropriate, under extrusion of a laminated piece, the glue on the front face is filled into the front face glue overflowing groove, no overflowing glue is seen on the front face of the assembly, and the glue on the back face overflows from the back face of the photovoltaic assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic module field especially for the rubber tube for the frame of photovoltaic module. BACKGROUND

[0002] The photovoltaic module comprises a laminated piece and a frame, four edges of the laminated piece are embedded into grooves of the frame, and the gap between the laminated piece and the frame is sealed and filled by sealing glue. The frame supports and protects the laminated piece, and facilitates the installation of the photovoltaic module. The sealing glue has good weather resistance, waterproofness, insulation and impact resistance, and can protect the battery from the influence of water vapor and external force.

[0003] The process of combining the laminated piece and the frame is generally as follows: the groove of the frame is placed upward, the glue head of the glue injection machine is inserted into the groove of the frame, while the glue head moves from one end of the frame to the other end, the glue injection machine continuously injects the sealing glue into the groove through the glue head, after the glue injection is completed, the glue head is removed, and then the edge of the laminated piece is inserted into the groove of the frame.

[0004] According to the requirements of the photovoltaic industry, after the frame of the photovoltaic module is assembled, the front surface of the photovoltaic laminated piece needs to be filled with silicone to overflow the glue overflow groove but not to overflow the surface of the photovoltaic module, and the back surface of the photovoltaic laminated piece needs to overflow the frame of the photovoltaic module to fill the gap between the back plate of the photovoltaic module and the frame.

[0005] The glue outlet end of the existing glue injection rubber tube is often configured as an oblique cut, the glue outlet end of the rubber tube is inserted into the groove of the frame, and the oblique cut part is kept facing the C face side. After the glue is injected into the groove of the frame, the photovoltaic laminated piece is assembled into the groove, and the laminated piece extrudes the glue in the groove to make the glue flow. When the glue injection rubber tube is used for glue injection, the proportion of the front surface and the back surface lacking glue is high. Another existing glue injection rubber tube, as shown in Figure 1 , increases the amount of glue on the back surface by providing a notch 100 on one side of the glue outlet end, which significantly improves the glue overflow effect on the back surface, but still has a certain proportion of glue lacking on the front surface. Utility model content

[0006] To solve at least one technical problem of the prior art, the utility model provides a glue injection head for a photovoltaic module.

[0007] The glue injection head for the photovoltaic module comprises a glue outlet end, the free end of the glue outlet end has an oblique cut part, the glue outlet end further has a first side wall opposite to the oblique cut part and a second side wall opposite to the first side wall, a flat glue outlet is defined between the first side wall and the second side wall, the edge of the first side wall has a first notch, the edge of the second side wall has a second notch, and the area of the first notch is smaller than the area of the second notch.

[0008] In some embodiments, the area ratio of the first notch to the second notch is 1.8-7.8.

[0009] In some embodiments, the ratio of the area of the first notch to the area of the second notch is 3.5-5.5.

[0010] In some embodiments, the area of the first notch is 4±0.5mm 2 , and the ratio of the area of the first notch to the area of the second notch is 17±0.5mm 2 .

[0011] In some embodiments, the second notch comprises a relatively larger first portion and a relatively smaller second portion, the first portion connecting the edge of the second side wall, and the second portion connecting the end of the first portion away from the edge of the second side wall.

[0012] In some embodiments, the second notch extends from the edge of the second side wall along the axial direction of the rubber tube and terminates within the second side wall, the terminal end of the second notch being in the shape of a circular arc, and the first notch connects the terminal end of the second notch.

[0013] In some embodiments, the included angle of the beveling portion with respect to the axial direction of the rubber tube is 35°-55°.

[0014] The edge of the first side wall of the rubber tube has a first notch, and the edge of the second side wall has a second notch, and the area of the first notch is smaller than the area of the second notch. The second notch increases the amount of glue discharged to the back of the photovoltaic module during glue application, thereby improving the glue overflow effect on the back of the photovoltaic module. The first notch appropriately increases the amount of glue discharged to the front of the photovoltaic module during glue application, thereby reducing the proportion of glue shortage in the glue overflow groove on the front of the photovoltaic module. The glue capacity of the front and back of the photovoltaic module is different, so the area of the first notch is smaller than the area of the second notch. In this way, after glue application, the amount of glue distributed on the front and back is appropriate, and under the extrusion of the laminated part, the glue on the front fills into the glue overflow groove on the front, and the glue on the back overflows from the back of the photovoltaic module. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 An existing glue application rubber tube is shown.

[0016] Figure 2 A side view of a glue head for a photovoltaic module according to an embodiment of the present disclosure is shown.

[0017] Figure 3 A perspective view of a glue head for a photovoltaic module according to an embodiment of the present disclosure is shown.

[0018] Figure 4 A partial front view of a glue discharging end of a glue head for a photovoltaic module according to an embodiment of the present disclosure is shown.

[0019] Figure 5 A schematic diagram showing the distribution of glue after glue injection into the groove of the frame using a glue head for a photovoltaic module according to an embodiment of the present disclosure is shown.

[0020] Figure 6 The distribution of the glue after assembling the frame laminated piece is shown. Figure 5 The distribution of the glue after assembling the frame laminated piece is shown. DETAILED DESCRIPTION

[0021] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0022] Referring to Figure 2 In a preferred embodiment of the present disclosure, the glue head 1 for gluing the photovoltaic module includes a glue outlet end 2 and a glue inlet end 3 for connecting with a glue machine. The free end of the glue outlet end 2 has a beveling part 4, and the included angle of the beveling part 4 with respect to the axial direction of the glue pipe 1 is typically 35°-55°, more typically 40°-50°. For example, the included angle of the beveling part 4 with respect to the axial direction of the glue pipe 1 is any one of 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54° and 55°.

[0023] Further referring to Figure 3 The glue outlet end 2 also has a first side wall 5 opposite the beveling part 4 and a second side wall 6 opposite the first side wall 5, and a flat glue outlet 7 is defined between the first side wall 5 and the second side wall 6. The first side wall 5 and the second side wall 6 extend substantially straight along the axial direction of the glue pipe 1, and at the glue outlet end 2, the first side wall 5 terminates farther than the second side wall 6. The beveling part 4 is inclined with respect to the axial direction of the glue pipe 1 between the first side wall 5 and the second side wall 6.

[0024] Referring to Figure 3 The edge of the first side wall 5 has a first notch 8, and the edge of the second side wall 6 has a second notch 9, and the area of the first notch 8 is smaller than the area of the second notch 9. In the present embodiment, the two opposite side walls of the glue pipe 1 are respectively provided with the first notch 8 and the second notch 9, and the area of the first notch 8 is smaller than the area of the second notch 9. During the glue injection into the groove of the frame, the second notch 9 increases the amount of glue injected to the back of the photovoltaic module, so that the glue overflow effect on the back of the photovoltaic module is improved, and the first notch 8 appropriately increases the amount of glue injected to the front of the photovoltaic module, so that the proportion of glue shortage in the glue overflow groove on the front of the photovoltaic module is reduced. Referring to Figure 5 and Figure 6 The glue capacity of the front and back of the photovoltaic module is different, and the area of the first notch 8 is configured to be smaller than the area of the second notch 9, so that after the glue 13 is injected into the groove of the frame 12, the glue amount distributed on the front and back of the frame is appropriate, and under the extrusion of the laminated piece 14, the glue on the front fills into the glue overflow groove on the front, and the glue on the back overflows from the back of the photovoltaic module.

[0025] In an embodiment, the ratio of the area of the first notch 8 to the area of the second notch 9 is 1.8-7.8. Preferably, the ratio of the area of the first notch 8 to the area of the second notch 9 is 3.5-5.5. More preferably, the ratio of the area of the first notch 8 to the area of the second notch 9 is 4.25. By setting the area ratio of the first notch 8 and the second notch 9, the present embodiment rationally configures the glue overflow amount of the first notch 8 and the second notch 9, and balances the full glue overflow groove on the front surface and no visible glue overflow on the back surface. In an embodiment, the area of the first notch 8 is 4mm 2 , and the area of the notch is 17mm 2 , allowing a tolerance of ±0.5mm 2 .

[0026] In an embodiment, please refer to Figure 4 , the second notch 9 includes a relatively large first part 10 and a relatively small second part 11, the first part 10 is connected to the edge of the second side wall 6, and the second part 11 is connected to the end of the first part 10 away from the edge of the second side wall 6.

[0027] In an embodiment, the second notch 9 extends from the edge of the second side wall 6 along the axial direction of the rubber tube 1 and terminates in the second side wall 6, the terminal end of the second notch 9 is in the form of a circular arc, and the first notch 8 is connected to the terminal end of the second notch 9.

[0028] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept of the present application, a number of modifications and improvements can be made, which are all within the scope of protection of the present application.

Claims

1. A dispensing tip for dispensing a sealant for a photovoltaic module, the dispensing tip comprising a dispensing end, the dispensing end having a beveled end portion, the dispensing end further having a first side wall opposite the beveled end portion and a second side wall opposite the first side wall, the first side wall and the second side wall defining a flattened dispensing orifice therebetween, wherein the dispensing tip further comprises a first chamfered portion disposed between the first side wall and the beveled end portion, and a second chamfered portion disposed between the second side wall and the beveled end portion. The edge of the first sidewall has a first notch, and the edge of the second sidewall has a second notch, the area of the first notch being smaller than the area of the second notch.

2. The dispensing tip for photovoltaic module encapsulation according to claim 1, wherein, The ratio of the area of the first notch to the area of the second notch is 1.8-7.

8.

3. The photovoltaic module dispensing tip of claim 2, wherein, The ratio of the area of the first notch to the area of the second notch is 3.5-5.

5.

4. The photovoltaic module dispensing tip of claim 1, wherein, The first notch has an area of 4 ± 0.5 mm 2 The second notch has an area of 17 ± 0.5 mm 2 .

5. The photovoltaic module dispensing tip of claim 1, wherein, The second notch comprises a first part and a second part, the first part being larger than the second part, the first part being connected to the edge of the second sidewall, and the second part being connected to the end of the first part away from the edge of the second sidewall.

6. The photovoltaic module dispensing tip of claim 5, wherein, The second notch extends from the edge of the second sidewall along the axial direction of the rubber head and terminates in the second sidewall, the terminal end of the second notch being in the form of a circular arc, and the first notch is connected to the terminal end of the second notch.

7. The photovoltaic module dispensing tip of claim 1, wherein, The included angle of the beveling part with respect to the axial direction of the rubber head is 35°-55°.

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