Bow-shaped curing clamp

Abstract

The utility model discloses a bow-shaped curing clamp, which belongs to the technical field of solar cells and comprises a bow-shaped table component, the top surface of the bow-shaped table component is concave, and the bottom surface of the concave part is bow-shaped; and the downward pressing assembly is correspondingly arranged above the bow-shaped table assembly and can be correspondingly buckled in the downward concave part of the bow-shaped table assembly. According to the utility model, in the heating and curing process, the extrusion force on the battery piece can be continuously maintained, so that the warping of the battery piece caused by curing shrinkage of an insulating material can be counteracted, the problem of warping of the battery piece is solved, and the quality and the yield of products are improved. According to the utility model, the curing shrinkage rate of the insulating material does not need to be strictly required, and the battery piece is only required to be extruded into an arch shape for curing by using a tool after the insulating material is printed, so that the performance requirement on the insulating material can be reduced, and the production cost is reduced. And the warping of the battery piece can be completely eliminated by accurately controlling the arch quantity of the battery piece, so that the production efficiency and the product quality are further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar cells, and in particular relates to a bow-shaped curing fixture. Background Art

[0002] In the field of photovoltaic cell manufacturing technology, the full back electrode contact cell is a new type of cell structure, in which both the positive and negative electrodes are located on the back of the cell. This design can improve cell efficiency and simplify the production process. However, this design also brings new challenges. When used in the module end, short circuits are prone to occur, and insulating material must be printed on the back of the cell to prevent short circuits. The insulating material shrinks during the curing process, causing the cell to warp. In the field of photovoltaic packaging technology, eliminating the warping problem of the cell is an important research direction. Cell warping can cause welding offsets during the production process, thereby reducing product reliability and yield. In addition, cell warping can increase the fragmentation rate, thereby increasing production costs.

[0003] Existing solutions primarily reduce cell warpage by changing the insulation material formula and reducing its curing shrinkage. However, curing shrinkage is a characteristic of insulation materials, so these methods often cannot completely eliminate cell warpage. Furthermore, the high performance requirements of the insulation material increase material costs.

[0004] To this end, a bow-shaped curing fixture is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes a bow-shaped curing fixture.

[0006] To achieve the above objectives, the present invention provides a bow-shaped curing fixture comprising:

[0007] An arched platform assembly, wherein the top surface of the arched platform assembly is concave, and the bottom surface of the concave portion is arched;

[0008] The pressing down assembly is correspondingly arranged above the bow-shaped platform assembly and can be correspondingly buckled into the concave part of the bow-shaped platform assembly.

[0009] Preferably, the bow-shaped table assembly includes a table bottom and a bow-shaped block, the top surface of the table bottom is provided with a groove, the bow-shaped block is detachably connected to the groove, and the top surface of the bow-shaped block is an arc surface.

[0010] Preferably, a mounting post is protruded from the center of the bottom surface of the arch block, and a mounting hole is opened at the center of the bottom of the platform corresponding to the mounting post.

[0011] Preferably, the pressing assembly includes a mounting plate, a boss is fixedly connected to the center of the bottom surface of the mounting plate, a flexible pressing block is fixedly connected to the bottom surface of the boss, and the sizes of the boss and the flexible pressing block correspond to the sizes of the groove.

[0012] Preferably, the flexible pressing block comprises a latex shell, and high temperature resistant sand and gravel are wrapped in the latex shell.

[0013] Preferably, guide columns are fixedly connected to the periphery of the top of the platform bottom, and guide holes are opened on the mounting plate corresponding to the guide columns.

[0014] Preferably, the guide post is provided with a thread, and a nut is threadedly connected to the guide post.

[0015] Preferably, a lifting column is fixedly connected to the top of the mounting plate.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects:

[0017] First, the battery cell is coated with insulating material. The height and radius of the bowed bottom surface of the bow-shaped platform assembly are determined based on the degree of warping of the battery cell caused by each insulating material, so that the amount of bowing of the battery cell after curing can just offset the amount of warping caused by the shrinkage of the insulating material during curing. The battery cell is then placed in the concave portion of the bow-shaped platform and squeezed into a bow shape using the down-pressing assembly. The battery cell and the tooling can then be sent into the tunnel furnace for heating and curing. Because the tooling continues to maintain the squeezing force on the battery cell during the heating and curing process, the warping of the battery cell caused by the shrinkage of the insulating material during curing can be offset, solving the problem of battery cell warping and improving product quality and output. The utility model does not require strict requirements for the curing shrinkage rate of the insulating material. It only needs to use the tooling to squeeze the battery cell into a bow shape for curing after printing the insulating material. This can reduce the performance requirements for the insulating material and reduce production costs. In addition, by precisely controlling the amount of bowing of the battery cell, the present application can completely eliminate battery cell warping, thereby further improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the bow-shaped curing fixture of the utility model;

[0020] Figure 2 This is an exploded view of the bow-shaped curing fixture of the utility model;

[0021] Figure 3 It is a cross-sectional view of the bow-shaped curing fixture of the utility model in a buckled state;

[0022] Figure 4 This is a cross-sectional view of the bow-shaped curing fixture of the present invention in an open state.

[0023] In the figure: 101, bottom of the platform; 102, bow block; 103, groove; 104, mounting column; 105, mounting hole; 106, pulling column; 201, mounting plate; 202, boss; 203, flexible pressure block; 2031, latex shell; 2032, high temperature resistant sand and gravel; 204, guide column; 205, guide hole; 206, nut. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] Reference Figures 1 to 4 As shown, this embodiment provides a bow-shaped curing fixture, comprising:

[0027] An arched platform assembly, wherein the top surface of the arched platform assembly is concave, and the bottom surface of the concave portion is arched;

[0028] The pressing component is correspondingly arranged above the bow-shaped platform component and can be correspondingly buckled into the concave part of the bow-shaped platform component.

[0029] First, the battery cell is coated with insulating material. The height and radius of the bowed bottom surface of the bow-shaped platform assembly are determined based on the degree of warping of the battery cell caused by each insulating material, so that the amount of bowing of the battery cell after curing can just offset the amount of warping caused by the shrinkage of the insulating material during curing. The battery cell is then placed in the concave portion of the bow-shaped platform and squeezed into a bow shape using the down-pressing assembly. The battery cell and the tooling can then be sent into the tunnel furnace for heating and curing. Because the tooling continues to maintain the squeezing force on the battery cell during the heating and curing process, the warping of the battery cell caused by the shrinkage of the insulating material during curing can be offset, solving the problem of battery cell warping and improving product quality and output. The utility model does not require strict requirements for the curing shrinkage rate of the insulating material. It only needs to use the tooling to squeeze the battery cell into a bow shape for curing after printing the insulating material. This can reduce the performance requirements for the insulating material and reduce production costs. In addition, by precisely controlling the amount of bowing of the battery cell, the present application can completely eliminate battery cell warping, thereby further improving production efficiency and product quality.

[0030] According to a further optimized solution, the bow-shaped table assembly includes a table bottom 101 and a bow block 102. A groove 103 is provided on the top surface of the table bottom 101. The bow block 102 is detachably connected to the groove 103. The top surface of the bow block 102 is an arc surface.

[0031] The bow block 102 is configured as a detachable structure, so that the bow blocks 102 with different radii and curvatures can be replaced according to the warping degree of different insulating materials, thereby increasing the scope of application of the clamp of the present application.

[0032] According to a further optimized solution, a mounting post 104 is protruded from the center of the bottom surface of the bow block 102 , and a mounting hole 105 is opened at the center of the platform bottom 101 corresponding to the mounting post 104 .

[0033] By correspondingly plugging the mounting post 104 and the mounting hole 105 and cooperating with the shape of the groove 103 , the installation of the bow block 102 is positioned; at the same time, the setting of the mounting hole 105 also facilitates the disassembly of the bow block 102 , and the bow block 102 can be ejected from the mounting hole 105 .

[0034] A further optimized solution is that the pressing assembly includes a mounting plate 201, a boss 202 is fixedly connected to the center of the bottom surface of the mounting plate 201, a flexible pressing block 203 is fixedly connected to the bottom surface of the boss 202, and the sizes of the boss 202 and the flexible pressing block 203 correspond to the sizes of the groove 103.

[0035] In order to match the bow blocks 102 with different curvatures, a flexible pressing block 203 is used where the lower pressure component contacts the solar panel. The deformable flexible pressing block 203 can adapt to the bow blocks 102 of different shapes. There is no need to replace the corresponding pressing block every time the bow block 102 is formed, which simplifies the steps of replacing tooling and saves costs.

[0036] According to a further optimized solution, the flexible pressing block 203 includes a latex shell 2031 , and high temperature resistant sand and gravel 2032 is wrapped in the latex shell 2031 .

[0037] The latex shell 2031 has a certain elasticity, and the high-temperature resistant sand and gravel 2032 is preferably fine quartz sand, which can flow along with the deformation of the latex shell 2031, thereby adapting to the shapes of different arch blocks 102 and providing balanced downward pressure.

[0038] As a further optimized solution, guide posts 204 are fixed to the periphery of the top of the platform bottom 101 , and guide holes 205 are opened on the mounting plate 201 corresponding to the guide posts 204 .

[0039] The guide post 204 slides in the guide hole 205 to guide the pressing assembly to press down the battery cell, thereby preventing deviation during fastening.

[0040] According to a further optimized solution, the guide column 204 is provided with a thread, and a nut 206 is threadedly connected to the guide column 204 .

[0041] The nut 206 can be used to tighten the pressing assembly after the pressing assembly presses down the battery cell, so that the pressing assembly maintains a stable downward pressure.

[0042] To further optimize the solution, a lifting column 106 is fixed to the top of the mounting plate 201 .

[0043] The lifting column 106 facilitates lifting and pressing the assembly after solidification, and then removing the battery cell.

[0044] Anything not described in detail in the present invention is a conventional technical means known to those skilled in the art.

[0045] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0046] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A bow-shaped curing fixture, characterized in that: include: An arched platform assembly, wherein the top surface of the arched platform assembly is concave, and the bottom surface of the concave portion is arched; The pressing down assembly is correspondingly arranged above the bow-shaped platform assembly and can be correspondingly buckled into the concave part of the bow-shaped platform assembly.

2. The bow-shaped curing fixture according to claim 1, characterized in that: The bow-shaped table assembly comprises a table bottom (101) and a bow-shaped block (102); a groove (103) is provided on the top surface of the table bottom (101); the bow-shaped block (102) is detachably connected to the groove (103); and the top surface of the bow-shaped block (102) is an arc surface.

3. The bow-shaped curing fixture according to claim 2, characterized in that: A mounting post (104) protrudes from the center of the bottom surface of the bow-shaped block (102), and a mounting hole (105) is opened at the center of the platform bottom (101) corresponding to the mounting post (104).

4. The bow-shaped curing fixture according to claim 2, characterized in that: The pressing assembly comprises a mounting plate (201), a boss (202) is fixedly connected to the center of the bottom surface of the mounting plate (201), a flexible pressing block (203) is fixedly connected to the bottom surface of the boss (202), and the sizes of the boss (202) and the flexible pressing block (203) correspond to the sizes of the groove (103).

5. The bow-shaped curing fixture according to claim 4, characterized in that: The flexible pressing block (203) comprises a latex shell (2031), wherein high temperature resistant sand and gravel (2032) are wrapped in the latex shell (2031).

6. The bow-shaped curing fixture according to claim 4, characterized in that: A guide column (204) is fixedly connected to the periphery of the top of the platform bottom (101), and a guide hole (205) is opened on the mounting plate (201) corresponding to the guide column (204).

7. The bow-shaped curing fixture according to claim 6, characterized in that: The guide column (204) is provided with a thread, and a nut (206) is threadedly connected to the guide column (204).

8. The bow-shaped curing fixture according to claim 4, characterized in that: A lifting column (106) is fixedly connected to the top of the mounting plate (201).

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