Insulation curing device for solar cell

Abstract

The utility model provides a solar cell piece insulation curing device which comprises a bearing mechanism, a bearing platform is arranged on the bearing mechanism, a cell piece is placed on the bearing platform, the upper surface of the bearing platform is a curved surface which is bent downwards from the middle to the two sides, and the arc length of the curved surface is larger than the linear distance between the two ends of the curved surface by more than 2%; the force application mechanism at least acts on the two sides of the battery piece, and under the action of the force application mechanism, the battery piece is attached to the curved surface of the bearing platform; the coating mechanism is used for coating insulating glue on the surface of the battery piece along the bending direction of the battery piece; the curing mechanism and the bearing platform are located below the curing mechanism, or the bearing platform is located in the curing mechanism, and the insulating glue on the surface of the bent battery piece is cured through the curing mechanism, so that the stress of the battery piece warping towards the surface coated with the insulating glue in the curing process can be exactly offset, and the battery piece is prevented from warping after curing is finished; and the battery piece is not damaged.

Description

Technical Field

[0001] The present application belongs to the technical field of solar cell production, and in particular, relates to a solar cell sheet insulation curing device. Background Art

[0002] Since the back-contact solar cell only has the positive and negative electrodes arranged alternately on the back of the cell, and there is no grid line blocking the front of the cell, the shading current loss of the electrode can be eliminated, the incident photons can be maximized, and the short-circuit current of the cell can be increased.

[0003] Since the positive and negative electrodes of the back-contact solar cell are both set on the back of the cell, in order to avoid the positive and negative electrodes from being short-circuited by the soldering tape during the welding process, it is necessary to coat the surface of the cell with insulating glue, and then cure the coated wet insulating glue. Since a certain amount of heat is generated during the curing process, the insulating glue will expand thermally. After the insulating glue on the cell is cured, the temperature of the insulating glue drops, and the insulating glue shrinks, causing the cell to warp. If the cell warps too much, it will affect the process effect of the subsequent process. Utility Model Content

[0004] In view of this, the present application provides a solar cell insulation curing device, which applies downward force to the cell to make the cell bend downward on both sides along the insulating glue coating direction, thereby preventing the cell from warping after the insulating glue is cured.

[0005] A solar cell insulation curing device, comprising:

[0006] A carrying mechanism, wherein a carrying platform is provided on the carrying mechanism, a battery cell is placed on the carrying platform, and an upper surface of the carrying platform is a curved surface that bends downward from the middle to both sides, and an arc length of the curved surface is greater than a straight line distance between two ends of the curved surface by more than 2%;

[0007] A force-applying mechanism, the force-applying mechanism acts on at least two sides of the battery sheet, and under the action of the force-applying mechanism, the battery sheet is fitted with the curved surface of the carrying platform;

[0008] A coating mechanism, wherein the coating mechanism coats insulating glue on the surface of the battery cell along the bending direction of the battery cell;

[0009] The curing mechanism, the carrying platform is located below the curing mechanism, or the carrying platform is located inside the curing mechanism, and the insulating glue on the curved surface of the battery cell is cured by the curing mechanism.

[0010] Preferably, the arc length of the curved surface is 2% to 5% greater than the straight-line distance between two ends of the curved surface.

[0011] Preferably, the force applying mechanism acts on at least two sides of the lower surface of the battery cell.

[0012] More preferably, the force applying mechanism acts on the entire lower surface of the battery cell.

[0013] Furthermore, the force-applying mechanism includes a vacuum device, an adsorption chamber and adsorption holes, the vacuum device is connected to the adsorption chamber, the adsorption chamber is located below the upper surface of the supporting platform, and a plurality of adsorption holes are provided on the upper surface of the supporting platform corresponding to where the battery cells are placed, and the adsorption holes are connected to the adsorption chamber.

[0014] Preferably, the force applying mechanism acts on both sides of the upper surface of the battery cell.

[0015] Further, the force-applying mechanism includes a downward pressing driving device and a downward pressing plate connected to the downward pressing driving device, and the downward pressing plate is located above the battery cell;

[0016] There are two lower pressing plates, and the two lower pressing plates are directly facing the two sides of the upper surface of the battery cell.

[0017] Preferably, the curing mechanism comprises a curing light, and the curing light is located above the carrying platform.

[0018] Preferably, the curing mechanism comprises a drying device, and the carrying platform is located in the drying device.

[0019] Preferably, the coating mechanism is a screen printing device.

[0020] The beneficial effect of the present application is that the arc length of the curved surface of the supporting platform is designed to be 2% to 5% larger than the straight-line distance between the two ends of the curved surface, and a downward force is applied to the battery cell through a force-applying mechanism to make the battery cell fit the curved surface of the supporting platform, and then insulating glue is coated on the battery cell along the bending direction of the battery cell, and the downwardly bent battery cell is cured, so as to just offset the stress of the battery cell warping toward the side coated with the insulating glue during the curing process, thereby preventing the battery cell from warping after the curing is completed, and will not damage the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0023] Figure 1 This is a schematic diagram of the structure of the support platform with adsorption holes in the present application;

[0024] Figure 2 It is a structural diagram of the battery cell and the curved surface of the carrying platform being fitted together under the action of the force-applying mechanism.

[0025] In the figure: 1-carrying platform; 2-battery sheet; 3-adsorption hole; 4-curing lamp. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the embodiments in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] like Figure 1-2 As shown, the present application provides a solar cell insulation curing device, comprising:

[0029] A carrying mechanism, wherein a carrying platform 1 is provided on the carrying mechanism, a battery cell 2 is placed on the carrying platform 1, and the upper surface of the carrying platform 1 is a curved surface that bends downward from the middle to both sides, and the arc length of the curved surface is greater than 2% of the straight line distance between the two ends of the curved surface;

[0030] A force-applying mechanism, the force-applying mechanism acts on at least two sides of the battery cell 2, and under the action of the force-applying mechanism, the battery cell 2 is fitted with the curved surface of the carrying platform 1;

[0031] A coating mechanism (not shown in the figure), wherein the coating mechanism coats insulating glue on the surface of the battery cell 2 along the bending direction of the battery cell 2;

[0032] The curing mechanism, the carrying platform 1 is located below the curing mechanism, or the carrying platform 1 is located inside the curing mechanism, and the insulating glue on the surface of the curved battery cell 2 is cured by the curing mechanism.

[0033] The battery cell 2 is placed on the supporting platform 1, and a downward force is applied to the battery cell 2 by a force-applying mechanism, so that the two sides of the battery cell 2 are bent downward and fit with the curved surface of the supporting platform 1, so that the curvature of the battery cell 2 can be consistent with the curvature of the curved surface of the supporting platform 1, and the arc length of the curved surface of the supporting platform 1 is more than 2% larger than the straight-line distance between the two ends of the curved surface, so that the supporting platform 1 has a slightly curved surface, and the battery cell 2 also has a slightly curved arc when it is pressed down onto the supporting platform 1; then, the surface of the battery cell 2 is coated with insulating glue along the bending direction of the battery cell 2 by a coating mechanism, and then the insulating glue coated on the battery cell 2 is cured by a curing mechanism. After the curing is completed, the force applied to the battery cell 2 by the force-applying mechanism is released, and then the cured battery cell 2 is transferred to the next process for processing.

[0034] It can be understood that during the process of coating the insulating glue on the surface of the battery cell 2 and during the process of curing the insulating glue on the battery cell 2, the battery cell 2 always maintains a slight downward curvature. During this process, the curvature of the curved surface of the supporting platform 1 cannot be too large. This curvature should be designed to just offset the upward warping of the battery cell 2 after curing, so that the battery cell 2 can remain on a flat plane after curing is completed, and will not cause damage to the battery cell 2.

[0035] In this embodiment, the coating mechanism is a screen printing device, and screen printing is used to coat the insulating glue on the surface of the battery cell 2 with higher coating accuracy. Of course, the present application can also use other coating methods to coat the insulating glue on the surface of the battery cell 2, such as inkjet printing, glue coating or glue spraying.

[0036] Furthermore, the carrier platform 1 can move back and forth between the coating mechanism and the curing mechanism, and the specific movement method is prior art and will not be described in detail here. Under the action of the force-applying mechanism, the battery cell 2 always fits with the curved surface of the carrier platform 1 at both the coating mechanism and the curing mechanism, which can better prevent the battery cell 2 from warping.

[0037] In this embodiment, the arc length of the curved surface of the carrier platform 1 is 2% to 5% greater than the straight-line distance between the two ends of the curved surface. In this way, the battery cell 2 can have a small downward curvature, which can just offset the stress of the battery cell 2 warping upward after curing, so that the battery cell 2 remains flat after curing, and the battery cell 2 will not be damaged due to the excessive curvature of the battery cell 2. When the arc length of the curved surface of the carrier platform 1 is less than 2% less than the straight-line distance between the two ends of the curved surface, the stress of the battery cell 2 warping upward after curing cannot be completely offset, resulting in the battery cell 2 still warping upward after curing; when the arc length of the curved surface of the carrier platform 1 is more than 5% greater than the straight-line distance between the two ends of the curved surface, there is a risk of the battery cell 2 breaking during the downward bending process.

[0038] In this embodiment, the force-applying mechanism acts on at least two sides of the battery cell 2. Furthermore, the force-applying mechanism acts on the entire lower surface of the battery cell 2. A downward force is applied to both sides of the lower surface of the battery cell 2 or the entire lower surface of the battery cell 2 by the force-applying mechanism, so that the battery cell 2 is slightly bent downward and fits on the curved surface of the carrying platform 1. It can be understood that applying a downward force to the entire lower surface of the battery cell 2 can make the force on the lower surface of the battery cell 2 more uniform, so as to avoid damage to the battery cell 2 when the battery cell 2 is slightly bent downward.

[0039] like Figure 1 As shown, the force-applying mechanism includes a vacuum device (not shown in the figure), an adsorption chamber (not shown in the figure) and adsorption holes 3. The vacuum device is connected to the adsorption chamber. The adsorption chamber is located below the upper surface of the supporting platform 1. A plurality of adsorption holes 3 are provided on the upper surface of the supporting platform 1 corresponding to where the battery cell 2 is placed. The adsorption holes 3 are connected to the adsorption chamber.

[0040] In this embodiment, the adsorption chamber is evacuated by a vacuum device, and then the battery cell 2 placed on the supporting platform 1 is adsorbed on the supporting platform 1 through the adsorption holes 3, thereby applying a downward adsorption force to the battery cell 2, causing the battery cell 2 to bend slightly downward.

[0041] During the process of coating the insulating glue and curing, the vacuum device is started to make the battery cell 2 fit onto the curved surface of the supporting platform 1. After the curing process is completed, the vacuum device is turned off to stop applying downward force to the battery cell 2, thereby obtaining a battery cell 2 with a flat surface and an insulating glue layer.

[0042] In another embodiment of the present application, the force applying mechanism acts on both sides of the upper surface of the battery cell 2. The force applying mechanism applies downward force to both sides of the upper surface of the battery cell 2, so that the battery cell 2 is slightly bent downward and fits with the curved surface of the carrying platform 1.

[0043] Further, the force-applying mechanism includes a downward pressing driving device (not shown in the figure) and a downward pressing plate (not shown in the figure) connected to the downward pressing driving device, and the downward pressing plate is located above the battery cell 2;

[0044] There are two lower pressing plates, and the two lower pressing plates are facing two sides of the upper surface of the battery cell 2 .

[0045] The two pressing plates can be pressed down simultaneously by one pressing drive device, or two pressing drive devices can be provided, each pressing drive device corresponding to one pressing plate, so that the two pressing plates are pressed down respectively by the corresponding pressing drive devices.

[0046] Before applying insulating glue to the battery cell 2, the driving device drives the two lower pressing plates to press down to both sides of the upper surface of the battery cell 2, so that the two sides of the battery cell 2 are bent downward and fit with the curved surface of the supporting platform 1, so that the battery cell 2 has a slight downward curvature.

[0047] The curing mechanism comprises a curing lamp 4 , and the curing lamp 4 is located above the carrying platform 1 .

[0048] The light source generated by the curing lamp 4 can be ultraviolet light or infrared light. Preferably, in this embodiment, ultraviolet light with better curing effect is selected, that is, the curing lamp 4 can be a UV lamp. When the UV lamp is used for curing, the curing time is short and the curing effect is good.

[0049] Further, the curing light 4 can move along at least one direction of the battery cell 2; or, the carrying platform 1 can move along the conveying direction of the battery cell 2; or, the carrying platform 1 and the curing light 4 move in opposite directions at the same time.

[0050] When the battery cell 2 is cured by the curing lamp 4, the curing lamp 4 can be moved at least in the same direction of the battery cell 2, and the supporting platform 1 does not move, so as to cure the insulating glue coated on the entire battery cell 2; or the supporting platform 1 can be moved along the conveying direction of the battery cell 2 to move the battery cell 2, and the curing lamp 4 is fixed above the supporting platform 1. During the curing process, the battery cell 2 is moved while the curing process of the entire battery cell 2 is completed; or the curing lamp 4 and the battery cell 2 move at the same time, and the moving directions of the two are opposite, so as to complete the curing process of the entire battery cell 2.

[0051] In another embodiment of the present application, the curing mechanism includes a drying device, and the carrying platform 1 is located in the drying device.

[0052] That is, the battery cell 2 is placed in a drying device, in which a heating device (not shown) is provided, and the battery cell 2 coated with the insulating glue is heated by the heating device, so that the insulating glue is cured.

[0053] In this specification, each embodiment is described in a progressive, parallel, or progressive and parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0054] It should be noted that in the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, 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, and therefore cannot be understood as a limitation on the present application. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0055] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A solar cell insulation curing device, characterized in that: include: A carrying mechanism, wherein a carrying platform (1) is provided on the carrying mechanism, a battery cell (2) is placed on the carrying platform (1), an upper surface of the carrying platform (1) is a curved surface that bends downward from the middle to both sides, and an arc length of the curved surface is greater than 2% of a straight line distance between two ends of the curved surface; A force-applying mechanism, the force-applying mechanism acting on at least two sides of the battery sheet (2), under the action of the force-applying mechanism, the battery sheet (2) is fitted with the curved surface of the carrying platform (1); A coating mechanism, wherein the coating mechanism coats insulating glue onto the surface of the battery cell (2) along the bending direction of the battery cell (2); A curing mechanism, wherein the carrying platform (1) is located below the curing mechanism, or the carrying platform (1) is located inside the curing mechanism, and the insulating glue on the surface of the curved battery cell (2) is cured by the curing mechanism.

2. A solar cell insulation curing device according to claim 1, characterized in that: The arc length of the curved surface is 2% to 5% greater than the straight line distance between the two ends of the curved surface.

3. A solar cell insulation curing device according to claim 2, characterized in that: The force applying mechanism acts on at least two sides of the lower surface of the battery sheet (2).

4. A solar cell insulation curing device according to claim 3, characterized in that: The force-applying mechanism acts on the entire lower surface of the battery sheet (2).

5. A solar cell insulation curing device according to claim 4, characterized in that: The force-applying mechanism comprises a vacuum device, an adsorption chamber and adsorption holes (3); the vacuum device is connected to the adsorption chamber; the adsorption chamber is located below the upper surface of the carrying platform (1); a plurality of adsorption holes (3) are provided on the upper surface of the carrying platform (1) corresponding to where the battery cells (2) are placed; the adsorption holes (3) are connected to the adsorption chamber.

6. A solar cell insulation curing device according to claim 2, characterized in that: The force applying mechanism acts on both sides of the upper surface of the battery sheet (2).

7. A solar cell insulation curing device according to claim 6, characterized in that: The force-applying mechanism comprises a downward pressing driving device and a downward pressing plate connected to the downward pressing driving device, wherein the downward pressing plate is located above the battery sheet (2); Two lower pressing plates are provided, and the two lower pressing plates face the two sides of the upper surface of the battery sheet (2).

8. A solar cell insulation curing device according to any one of claims 1 to 7, characterized in that: The curing mechanism comprises a curing light (4), and the curing light (4) is located above the carrying platform (1).

9. A solar cell insulation curing device according to any one of claims 1 to 7, characterized in that: The curing mechanism comprises a drying device, and the carrying platform (1) is located inside the drying device.

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