Grid line soldering flux adding device for main-grid-free battery string

Abstract

The utility model relates to the technical field of photovoltaic cell production, in particular to a main-grid-free cell string grid line soldering flux adding device which comprises a jig, and a device used for obtaining a cell string is arranged below the jig. The two sets of horizontal telescopic rods are installed on the two opposite sides of the jig correspondingly, and the extending ends of the horizontal telescopic rods can extend out of the side edge of the jig. The base block is mounted at the extending tail end of the horizontal telescopic rod; the first longitudinal telescopic rod is installed below the base block, a first gluing block is arranged at the telescopic tail end of the first longitudinal telescopic rod, and a conductive sponge layer is arranged on the lower side of the first gluing block; the second longitudinal telescopic rod is installed below the base block, the telescopic tail end of the second longitudinal telescopic rod is provided with a second gluing block, and the upper side of the second gluing block is provided with another conductive sponge layer. The soldering flux adding device can realize firmer and more reliable welding of the grid lines at the two ends of the battery string and the confluence welding strip, and further achieves the effect of improving the production yield of photovoltaic modules.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic cell production technical field especially a main gridless cell string grid line fluxing agent adding device. BACKGROUND

[0002] At present, the automatic production line technology of photovoltaic module has been very mature, but in the process of overlay welding, the grid lines at both ends of the cell string and the welding ribbon are not completely welded, resulting in the phenomenon of "virtual welding", which further causes the problem of reducing the production yield of the module.

[0003] In addition, when the traditional overlay welding machine adds fluxing agent to the welding ribbon, the fluxing agent injection port is prone to crystallization and blockage, which needs to be cleaned regularly. UTILITY MODEL CONTENT

[0004] To solve the above problems, the utility model provides a main gridless cell string grid line fluxing agent adding device, which can realize more firm and reliable welding of the grid lines at both ends of the cell string and the welding ribbon, thereby improving the production yield of the photovoltaic module.

[0005] To achieve the above purpose, the utility model adopts the technical scheme of:

[0006] A main gridless cell string grid line fluxing agent adding device, characterized by comprising

[0007] A jig, which is provided below with a device for obtaining a cell string;

[0008] Horizontal telescopic rods, which are two groups and are respectively installed on the opposite sides of the jig, and the extended end of the horizontal telescopic rod can extend beyond the side edge of the jig;

[0009] A base block, which is installed at the extended end of the horizontal telescopic rod;

[0010] A first longitudinal telescopic rod, which is installed below the base block, and the telescopic end of the first longitudinal telescopic rod has a first glue applying block, and the lower side of the first glue applying block has a conductive sponge layer;

[0011] A second longitudinal telescopic rod, which is installed below the base block, and the telescopic end of the second longitudinal telescopic rod has a second glue applying block, and the upper side of the second glue applying block has another conductive sponge layer.

[0012] As a preferred, the conductive sponge layer is immersed with fluxing agent.

[0013] As a preferred, the first glue applying block and the second glue applying block both have a device for supplementing fluxing agent to the conductive sponge layer.

[0014] Preferably, the horizontal telescopic rod, the first longitudinal telescopic rod and the second longitudinal telescopic rod are pneumatic telescopic rods or hydraulic telescopic rods.

[0015] Preferably, the surface of the conductive sponge layer on the side facing the grid lines is a curved or wavy surface.

[0016] Preferably, the side of the conductive sponge layer contacting the grid lines is a convex part of a curved or wavy surface.

[0017] The beneficial effects of the present application are as follows:

[0018] The device drives the first glue applying block and the second glue applying block, and the conductive sponge layer to move oppositely through the first longitudinal telescopic rod and the second longitudinal telescopic rod, and the conductive sponge layer is immersed in the flux, and the conductive sponge layer contacts and extrudes the edge to release the flux to cover the grid lines, thereby achieving the effect of brushing the flux on the grid lines of the battery string. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The figure is a structural schematic view of the flux adding device for the grid line of the battery string without main grid.

[0020] Figure 2 The figure is a schematic view of the two conductive sponge layers pressing the grid lines.

[0021] Figure 3 The figure is a top view of the flux adding device for the grid line of the battery string without main grid.

[0022] Figure 4 The figure is a side view of the flux adding device for the grid line of the battery string without main grid.

[0023] The reference signs include:

[0024] 1 - jig, 2 - horizontal telescopic rod, 3 - base block, 4 - first longitudinal telescopic rod, 5 - second longitudinal telescopic rod, 6 - first glue applying block, 7 - second glue applying block, 8 - conductive sponge layer, 9 - grid line, 10 - battery string. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the present technical solution clearer and more explicit, the present technical solution is further described in detail below in combination with specific implementation manners. It should be understood that these descriptions are only exemplary, and are not intended to limit the scope of the present technical solution.

[0026] As Figure 1As shown, the embodiment proposes a main grid-free battery string 10 grid line 9 flux adding device, the main body is jig 1, a plurality of suction cups are arranged below the jig 1 as required, the suction cups are arranged in a predetermined number and arrangement mode as required, the function of the jig 1 is to suck the battery string 10 through the suction cups and lift the battery string 10 to a certain height. One horizontal telescopic rod 2 is respectively installed on the left and right sides of the jig 1, the horizontal telescopic rod 2 is a circular rod with controllable telescopic state, which is used to control the horizontal movement of the whole glue coating mechanism. The base block 3 is installed at the extended end of the horizontal telescopic rod 2, and the base block 3 is the base of the glue coating part. The inside of the base block 3 is used to install auxiliary components such as telescopic rod control signal line and flux conveying pipeline.

[0027] The first longitudinal telescopic rod 4 is installed below the base block 3, and the telescopic end of the first longitudinal telescopic rod 4 has a first glue coating block 6. The lower side of the first glue coating block 6 has a conductive sponge layer 8. The first longitudinal telescopic rod 4 is located between the base and the first glue coating block 6, which is used to control the longitudinal relative position of the first glue coating block 6 and the base block 3. It should be noted that in order to ensure that the telescopic rod does not hinder the subsequent glue coating, the rod should be offset from the central axis by a distance on the base block 3 and the first glue coating block 6.

[0028] The second longitudinal telescopic rod 5 is installed below the base block 3, and the telescopic end of the second longitudinal telescopic rod 5 has a second glue coating block 7. The upper side of the second glue coating block 7 has another conductive sponge layer 8. The second longitudinal telescopic rod 5 is located between the first glue coating block 6 and the second glue coating block 7, which is used to control the relative longitudinal position between the second glue coating block 7 and the first glue coating block 6. As above, in order to ensure that the glue coating work is carried out normally, the rod should be offset from the central axis by a distance on the first glue coating block 6 and the second glue coating block 7.

[0029] The first glue coating block 6 is a cuboid structure below the base block 3, and the upper surface can be arranged with auxiliary components such as skin tube for conveying flux. The lower surface is a layer of conductive sponge layer 8. The sponge has flux delivered through the upper skin tube. The main function of this component is to make the conductive sponge layer 8 with flux on the lower surface adhere to the grid line 9, so as to smear the flux on the grid line 9 of the battery string 10.

[0030] The second glue coating block 7 has the same function as the first glue coating block 6, except that the upper surface of the second glue coating block 7 is a layer of conductive sponge layer 8, so it is not described again.

[0031] The conductive sponge layer 8 can be understood as a glue coating layer, which is a layer of conductive sponge layer 8 coated with flux. The flux is smeared on the grid line 9 by extruding the sponge.

[0032] As Figure 2As shown, the conductive sponge layer 8 is used to apply flux to the grid line 9, and the surface of the conductive sponge layer 8 on the side facing the grid line 9 is a curved or wavy surface. The side of the conductive sponge layer 8 contacting the grid line 9 is a convex surface with a curved or wavy surface.

[0033] Specifically, the grid line 9 has very low material stiffness, and slight force applied to the grid line 9 can easily cause the grid line 9 to bend. Bending grid line 9 does not meet production requirements, so the force exerted by the mechanism on the conductive sponge layer 8 should be as small as possible. Therefore, the structure is designed with a wavy conductive sponge layer 8. By taking advantage of the stress concentration characteristics of the wavy pattern at the peaks and valleys, the mechanism can apply sufficient flux to the grid line 9 with very little extrusion force when in operation.

[0034] The device should include a control mechanism for each telescopic rod. Common control methods include pneumatic and hydraulic control. Due to differences in battery sheets, the telescopic amount of each telescopic rod should be designed according to the actual situation in actual application, and then the corresponding control mechanism is designed to achieve the function of the mechanism. The design aims to provide a method for improving the problem of weak welding between the battery string 10 and the solder strip in the soldering process in photovoltaic technology and a mechanical method for applying flux to the grid line 9 in the string welding process. It does not focus on the design of the telescopic rod control part, and any control method that can meet the corresponding mechanism function can be used.

[0035] In combination Figure 3 and Figure 4 As shown, the use process of the device is as follows: first, the jig 1 is suspended, close to the battery string 10, and holds the battery string 10; the horizontal telescopic rod 2 of the glue applying mechanism on both sides of the suction cup mechanism is extended outward, so that the glue applying mechanism is away from the battery string 10 by a distance, and the purpose is that the glue block will not touch the battery string 10 when it is lowered; then the two longitudinal telescopic rods below the glue applying mechanism base block 3 start to extend, so that the longitudinal position of the battery string 10 is between the two glue blocks; then the horizontal telescopic rod 2 of the glue applying mechanism is retracted to the initial position, driving the extended glue block to approach the position of the grid line 9, and the purpose is to make the positions of the grid lines 9 at both ends of the battery string 10 completely surrounded by the two glue blocks; next, the first longitudinal telescopic rod 4 continues to extend, driving the first glue block 6 to further approach the position of the grid line 9, until the glue layer on the lower surface of the first glue block 6 is in contact with the grid line 9. It needs to be noted that the telescopic rod should be slowly extended to ensure that it does not excessively impact the grid line 9, thereby causing the grid line 9 to bend; after the first glue layer is in contact with the grid line 9, the second longitudinal telescopic rod 5 starts to retract, causing the second glue layer to gradually approach the grid line 9 upward until it is in contact. Of course, the telescopic rod should also be moved slowly in this step; finally, under the clamping of the two glue layers, the conductive sponge with flux on the glue layer applies flux to the grid line 9, completing the glue application to the grid line 9. The glue applying device exits the reverse process of the above steps.

[0036] The device drives the first glue coating block 6 and the second glue coating block 7 and the conductive sponge layer 8 to move oppositely through the first longitudinal telescopic rod 4 and the second longitudinal telescopic rod 5, soaks the flux in the conductive sponge layer 8, contacts and extrudes the edge-shaped flux covering grid lines 9 through the conductive sponge layer 8, and further achieves the effect of brushing the flux on the grid lines 9 of the battery string 10.

[0037] The above is only the preferred embodiment of the present application, and for those skilled in the art, many changes can be made in the specific implementation and application range according to the idea of the present application, as long as the changes do not deviate from the concept of the present application, and all belong to the protection scope of the present application.

Claims

1. A masterless grid cell string grid line fluxing agent adding device characterized by: Comprising A tool, below which is provided with a device for obtaining a battery string; Two groups of horizontal telescopic rods, which are respectively installed on the opposite sides of the tool, and the extending ends of the horizontal telescopic rods can extend beyond the side edges of the tool; A base block, which is installed on the extending ends of the horizontal telescopic rods; A first longitudinal telescopic rod, which is installed below the base block, and the telescopic end of the first longitudinal telescopic rod has a first glue applying block, and the lower side of the first glue applying block has a conductive sponge layer; A second longitudinal telescopic rod, which is installed below the base block, and the telescopic end of the second longitudinal telescopic rod has a second glue applying block, and the upper side of the second glue applying block has another conductive sponge layer.

2. The no-mast string grid line fluxing agent adding device according to claim 1, characterized in that: The conductive sponge layer is soaked with flux.

3. The no-mast string grid line flux adding device of claim 1, wherein: Both the first glue applying block and the second glue applying block have a device for supplementing flux to the conductive sponge layer.

4. The no-mast string grid line flux adding device of claim 1, wherein: The horizontal telescopic rods, the first longitudinal telescopic rod and the second longitudinal telescopic rod are pneumatic telescopic rods or hydraulic telescopic rods.

5. The string grid line flux applicator for a gridless battery string of any of claims 1-4, wherein: The conductive sponge layer is used for applying flux to the grid lines, and the surface of the side of the conductive sponge layer facing the grid lines is a curved or wavy surface.

6. The no-mast string grid line flux adding device of claim 5, wherein: The side of the conductive sponge layer contacting the grid lines is a convex part with a curved or wavy surface.

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