Press-fit curing device

Abstract

The utility model discloses a pressing and curing device. The press-fit and curing device comprises a press-fit platform, a press-fit mechanism and a curing mechanism, the press-fit platform is provided with a bearing plane used for bearing a battery piece, the bearing plane is provided with a plurality of long-strip-shaped limiting grooves, the limiting grooves are used for containing metal interconnection strips, and the limiting grooves are used for containing the battery piece. The depth of the limiting groove is not larger than the thickness of the metal interconnection strip, the pressing mechanism is used for pressing the metal interconnection strip and a battery piece with glue points, and the curing mechanism is used for curing the glue points so that the metal interconnection strip and the battery piece can be connected to form a connector. The laminating and curing device can solve the problem of contact between a glue point and a curing carrier table during back curing, reduces glue waste, reduces cost, improves the stability of a metal interconnection strip in a curing process, prevents the metal interconnection strip from deviating in a curing and laminating process, improves the connection effect of a battery piece and the metal interconnection strip, reduces EL black spots, and improves the quality of the battery piece. And the EL test effect after curing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a pressing and curing device. Background Art

[0002] In photovoltaic technology, with the promotion and development of glue interconnection technology, UV glue curing has become an important part of the preparation process of photovoltaic modules, especially the curing of the back of the module. It is necessary to consider the light transmittance of the tooling. UV light can irradiate the glue points on the battery cell, causing the UV glue to undergo a polymerization reaction and change from liquid to solid, thereby achieving the function of fixing the solder strip. In traditional technology, due to the consideration of the light transmittance design of the curing platform, such as the use of flat glass on the curing platform, the curing platform cannot impose restrictions on the solder strip, and the solder strip is in a free state. After the pressure needle is pressed down, the solder strip rolls, and the offset is serious during curing. When the extreme difference is large, the solder strip deviates from the glue point, affecting the subsequent process. This causes serious solder strip offset; in addition, during curing and pressing, the glue point is easy to contact with the flat glass, resulting in glue waste, which will also cause the light transmittance of the flat glass to deteriorate, and even when there is too much glue on the flat glass, it is easy to cause the battery cell to crack. Utility Model Content

[0003] Based on this, it is necessary to provide a pressing and curing device. The pressing and curing device of the utility model can solve the problem of the contact between the glue point and the curing carrier during back curing, reduce glue waste, reduce costs, improve the stability of the metal interconnection strip during the curing process, prevent the metal interconnection strip from shifting during the curing and pressing process, improve the connection effect between the battery cell and the metal interconnection strip, reduce EL black spots, and improve the EL test effect after curing.

[0004] An embodiment of the present application provides a pressing and curing device.

[0005] A pressing and curing device comprises a pressing platform, a pressing mechanism and a curing mechanism, wherein the pressing platform is provided with a carrying plane for carrying battery cells, the carrying plane is provided with a plurality of elongated limiting grooves, the limiting grooves are used for placing metal interconnecting strips, the depth of the limiting grooves is not greater than the thickness of the metal interconnecting strips, the pressing mechanism is used for pressing the metal interconnecting strips and battery cells with glue dots, and the curing mechanism is used for curing the glue dots so that the metal interconnecting strips are connected to the battery cells to form a connector.

[0006] In some embodiments, the plurality of limiting grooves extend in the same direction, and the plurality of limiting grooves are arranged at intervals.

[0007] In some embodiments, a plurality of the limiting grooves are arranged at equal intervals.

[0008] In some of the embodiments, an adsorption hole is provided on the bottom surface of each of the limiting grooves, one end of the adsorption hole is opened at the bottom surface of the limiting groove and the other end extends to be connected with the adsorption device. The adsorption hole can generate negative pressure under the action of the adsorption device to adsorb and fix the metal interconnection strip in the limiting groove.

[0009] In some of the embodiments, each of the limiting grooves is provided with a plurality of adsorption holes distributed at intervals.

[0010] In some of the embodiments, the pressing platform is further penetrated by a light-transmitting channel, one end of which is open to the bearing plane, and at least a portion of the light-transmitting channel extends to the limiting groove to transmit light to the glue point in the limiting groove.

[0011] In some embodiments, the light-transmitting channel is a long strip-shaped channel, and the extending direction of the light-transmitting channel is different from the extending direction of the limiting groove.

[0012] In some embodiments, the extension direction of the light-transmitting channel is perpendicular to the extension direction of the limiting groove;

[0013] And / or, there are multiple light-transmitting channels, and the multiple light-transmitting channels are distributed at intervals.

[0014] In some embodiments, the pressing mechanism includes a pressing base plate and pressing pins, a plurality of the pressing pins are connected to the pressing plane of the pressing base plate, and the plurality of the pressing pins are distributed in a plurality of rows, and each row includes a plurality of the pressing pins.

[0015] In some embodiments, the curing mechanism includes a curing base plate and a plurality of UV curing lamps, and the plurality of UV curing lamps are distributed on the curing base plate at intervals.

[0016] The above-mentioned pressing and curing device can solve the problem of contact between the glue point and the curing carrier when curing on the back of the battery cell, reduce glue waste, reduce curing costs, improve the stability of the metal interconnection strips in the curing process, prevent the metal interconnection strips from shifting during the curing and pressing process, improve the connection effect between the battery cell and the metal interconnection strips, reduce EL black spots, and improve the EL test effect after curing.

[0017] Compared with the conventional technology, the pressing and curing device of the present application has the following beneficial effects:

[0018] (1) The pressing and curing device of the present application limits the position of the metal interconnection strip by setting a limit groove and an adsorption hole, which can solve the problem of the displacement of the metal interconnection strip such as the welding strip in the unrestricted and free state during the pressing process in the traditional technology. The technical solution of the present application has low cost, high stability and simple maintenance.

[0019] (2) The pressing and curing device of the present application can solve the problem of the inability to irradiate UV light on the back side of the cell in the traditional technology by providing a light-transmitting channel.

[0020] (3) The pressing and curing device of the present application solves the problem of poor contact between the soldering ribbon and the battery cell during the curing process by setting up a number of pressing pins, and can realize the pressing and curing of metal interconnect strips such as soldering ribbons and battery cells. After curing, the EL has no shadow, and it can also reduce the time required for simultaneous curing, which can further improve the equipment production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0022] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0023] Figure 1 This is a schematic diagram of a pressing and curing device according to an embodiment of the utility model;

[0024] Figure 2 A schematic diagram of a pressing platform of a pressing and curing device according to an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of a laminating platform portion of a laminating and curing device according to an embodiment of the utility model;

[0026] Figure 4 A schematic diagram of a pressing mechanism of a pressing and curing device according to an embodiment of the utility model;

[0027] Figure 5 It is a schematic diagram of the curing mechanism of the pressing and curing device described in one embodiment of the utility model.

[0028] Description of Reference Numerals

[0029] 10. Laminating and curing device; 100. Laminating platform; 101. Loading plane; 102. Limiting groove; 103. Adsorption hole; 104. Light-transmitting channel; 200. Laminating mechanism; 201. Laminating base plate; 202. Pressing needle; 300. Curing mechanism; 301. Curing base plate; 302. UV curing lamp; 20. Metal interconnection strip; 30. Battery cell. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] The embodiment of the present application provides a pressing and curing device 10 to solve the problem in the traditional technology that the curing platform uses a flat glass, which makes it impossible for the curing platform to impose restrictions on the solder strip, and the solder strip is in a free state. After the pressure needle is pressed down, the solder strip rolls, and the offset is serious during curing. When the extreme difference is large, the solder strip deviates from the glue point, affecting the subsequent process. This causes serious solder strip offset; in addition, during curing and pressing, the glue point is easy to contact with the flat glass, resulting in glue waste, which will also cause the flat glass to have poor light transmittance, and even when there is too much glue on the flat glass, it is easy to cause hidden cracks in the battery cell. The pressing and curing device 10 will be described below in conjunction with the accompanying drawings.

[0037] The pressing and curing device 10 provided in the embodiment of the present application is exemplary, see Figure 1 As shown, Figure 1 The schematic diagram of the structure of the pressing and curing device 10 provided in the embodiment of the present application. The pressing and curing device 10 of the present application can be used for preparing photovoltaic modules, for example, it can be used for connecting the battery cell 30 with the metal interconnection bar 20.

[0038] In order to more clearly illustrate the structure of the pressing and curing device 10 , the pressing and curing device 10 will be introduced below with reference to the accompanying drawings.

[0039] For example, see Figure 1 As shown, a laminating and curing device 10 includes a laminating platform 100 , a laminating mechanism 200 and a curing mechanism 300 .

[0040] Specifically, see Figure 2 As shown, Figure 2The schematic diagram of the pressing platform 100 of the pressing and curing device 10 of one embodiment of the utility model is provided on the pressing platform 100, and a carrying plane 101 for carrying the battery cell 30 is provided on the pressing platform 100. A plurality of elongated limiting grooves 102 are provided on the carrying plane 101. The limiting grooves 102 are used for placing the metal interconnection bar 20. The depth of the limiting grooves 102 is not greater than the thickness of the metal interconnection bar 20. The pressing mechanism 200 is used to press the metal interconnection bar 20 and the battery cell 30 with the glue point. The curing mechanism 300 is used to cure the glue point so that the metal interconnection bar 20 is connected to the battery cell 30 to form a connector. The metal interconnection bar 20 can be a welding strip.

[0041] The above-mentioned pressing and curing device 10 can solve the problem of contact between the glue point and the curing carrier during back curing, reduce glue waste, reduce costs, improve the stability of the metal interconnection bar 20 during the curing process, prevent the metal interconnection bar 20 from shifting during the curing and pressing process, improve the connection effect between the battery cell 30 and the metal interconnection bar 20, reduce EL black spots, and improve the EL test effect after curing.

[0042] In some embodiments, the plurality of limit slots 102 extend in the same direction. The plurality of limit slots 102 are arranged at intervals. Figure 1 As shown in the angle, a plurality of limiting grooves 102 extend along the length direction of the pressing platform 100 .

[0043] In some embodiments, a plurality of limiting grooves 102 are arranged at equal intervals. The spacing between adjacent limiting grooves 102 can be determined according to the distribution position of the metal interconnection bars 20 on the battery cell 30 .

[0044] In some of these embodiments, see Figure 3 As shown, Figure 3 This is a partial structural diagram of a laminating platform 100 of a laminating and curing device 10 according to an embodiment of the utility model. The bottom surface of each limiting groove 102 is provided with an adsorption hole 103. One end of the adsorption hole 103 opens at the bottom surface of the limiting groove 102 and the other end extends to communicate with the adsorption device. The adsorption hole 103 can generate negative pressure under the action of the adsorption device to adsorb and fix the metal interconnection strip 20 in the limiting groove 102.

[0045] In some embodiments, a plurality of adsorption holes 103 are arranged at intervals in each limiting groove 102. The plurality of adsorption holes 103 can adsorb the metal interconnection bar 20 at multiple positions to prevent the metal interconnection bar 20 from shifting during the pressing process.

[0046] For example, see Figure 2As shown, there are 18 limiting grooves 102 on the bearing plane 101, the groove depth of the limiting groove 102 is 0.1 mm, the width of the limiting groove 102 is 2 mm, and there are six adsorption holes 103 in each limiting groove 102. It is not difficult to understand that the number of limiting grooves 102 on the bearing plane 101 can be determined according to the number of pressed metal interconnect strips.

[0047] In some of these embodiments, see Figure 3 As shown, the pressing platform 100 is also penetrated by a light-transmitting channel 104. One end of the light-transmitting channel 104 is open to the bearing plane 101. At least part of the light-transmitting channel 104 extends to the limiting groove 102 to transmit light to the glue point in the limiting groove 102. The light-transmitting channel 104 can allow the fixed lamp of the curing mechanism 300 to irradiate the glue point, solving the problem that the back side of the battery cell 30 cannot be irradiated with UV light in the traditional technology.

[0048] In some embodiments, the light-transmitting channel 104 is a long strip channel. The extension direction of the light-transmitting channel 104 is different from the extension direction of the limiting groove 102. It is not difficult to understand that in other embodiments, the shape of the light-transmitting channel 104 can also be other types, for example, the light-transmitting channel 104 is a dot matrix extending along a direction perpendicular to the length of the limiting groove 102.

[0049] In some embodiments, the extension direction of the light-transmitting channel 104 is perpendicular to the extension direction of the limiting groove 102. Figure 2 and Figure 3 As shown, each light-transmitting channel 104 is distributed and vertically intersects with the limiting groove 102 .

[0050] In some embodiments, the width of the light-transmitting channel 104 is 3 mm to 4 mm, and the diameter of the glue dot is 1 mm to 1.5 mm. Therefore, the light-transmitting channel 104 can effectively allow the light of the curing lamp to pass through to illuminate the glue dot to achieve curing of the glue dot.

[0051] In some embodiments, there are multiple light-transmitting channels 104, and the multiple light-transmitting channels 104 are distributed at intervals. The specific shape of the light-transmitting channel 104 is not limited, as long as it can allow the light of the curing lamp to pass through.

[0052] In some of the embodiments, a clearance area is further provided on the light-transmitting channel 104, and the clearance area is used to make way for a wire moving mechanism that moves the metal interconnection bar 20. The wire moving claws of the wire moving mechanism are embedded in the clearance area to place the metal interconnection bar 20, thereby reducing the height of the metal interconnection bar 20 during placement and avoiding the metal interconnection bar 20 from being thrown high and causing deviation.

[0053] In some of these embodiments, see Figure 4 As shown, Figure 4The schematic diagram of the laminating mechanism 200 of the laminating curing device 10 of one embodiment of the utility model is shown, and the laminating mechanism 200 includes a laminating base plate 201 and a pressing pin 202. A plurality of pressing pins 202 are connected to the laminating plane of the laminating base plate 201. The plurality of pressing pins 202 are distributed in a plurality of rows. Each row includes a plurality of pressing pins 202.

[0054] In some embodiments, the distribution rule of the pressing needles 202 can be set according to the distribution rule of the glue points on the battery cell 30, that is, multiple pressing needles 202 can be distributed to press the position of a glue point, so that each glue point position can be pressed by pressure. For example, multiple pressing needles 202 are distributed in a matrix.

[0055] In some of these embodiments, see Figure 5 As shown, Figure 5 The curing mechanism 300 of the pressing and curing device 10 according to an embodiment of the present invention is schematically shown. The curing mechanism 300 includes a curing base plate 301 and a plurality of UV curing lamps 302. The plurality of UV curing lamps 302 are distributed on the curing base plate 301 at intervals.

[0056] For example, in one embodiment, the pressing needles 202 are distributed in a matrix of multiple rows and columns. Correspondingly, the multiple UV curing lamps 302 are distributed in a matrix of multiple rows and columns. The row spacing and column spacing of the multiple pressing needles 202 are equal to the row spacing and column spacing of the multiple UV curing lamps 302, respectively.

[0057] The pressing and curing device 10 of the present application, when used to connect the battery cell 30 with the metal interconnection bar 20, comprises the following steps:

[0058] (1) The metal interconnection strip 20 is laid in each limiting groove 102 of the curing platform according to a preset rule by a wire moving mechanism. After the metal interconnection strip 20 is placed, the metal interconnection strip 20 is fixed by a strong vacuum adsorption device to prevent the metal interconnection strip 20 from being offset.

[0059] (2) Place the back of the cell 30 with glue printed on it on top of the metal interconnection strip 20, and control the glue point on the cell 30 to be located at the position of the light-transmitting channel 104 on the curing platform.

[0060] (3) The pressing base plate 201 is controlled to move above the battery cell 30 , and the pressing pins 202 on the pressing base plate 201 are pressed down to the front of the battery cell 30 , so that the battery cell 30 and the metal interconnection strip 20 are bonded together.

[0061] (4) Control the multiple UV curing lamps 302 of the curing mechanism 300 to work, and the multiple UV curing lamps 302 irradiate the glue points upward from the light-transmitting channel 104 of the curing platform, and the UV glue produces a polymerization reaction, thereby fixing the metal interconnection strip 20 flatly and straightly to the back side of the battery cell 30. It should be noted that the above connection method is applicable to the front side and the back side of the battery cell 30.

[0062] In summary, compared with the conventional technology, the pressing and curing device 10 of the present application has the following beneficial effects:

[0063] (1) The pressing and curing device 10 of the present application limits the position of the metal interconnection strip 20 by setting the limiting groove 102 and the adsorption hole 103, which can solve the problem of the metal interconnection strip 20 such as the welding strip being offset in an unrestricted and free state during the pressing process in the traditional technology. The technical solution of the present application has low cost, high stability and simple maintenance.

[0064] (2) The pressing and curing device 10 of the present application can solve the problem that the back side of the cell 30 cannot be irradiated with UV light in the conventional technology by providing the light-transmitting channel 104 .

[0065] (3) The pressing and curing device 10 of the present application solves the problem of poor contact between the soldering ribbon and the battery cell 30 during the curing process by setting up a plurality of pressing needles 202, and can realize the pressing and curing of the metal interconnection strip 20 such as the soldering ribbon and the battery cell 30. After curing, the EL test is shadow-free, and the time required for simultaneous curing can also be reduced, which can further improve the equipment production capacity.

[0066] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A pressing and curing device (10), characterized in that: The invention comprises a pressing platform (100), a pressing mechanism (200) and a curing mechanism (300); the pressing platform (100) is provided with a carrying plane (101) for carrying a battery cell (30); the carrying plane (101) is provided with a plurality of long strip-shaped limiting grooves (102); the limiting grooves (102) are used for placing metal interconnection bars (20); the depth of the limiting grooves (102) is not greater than the thickness of the metal interconnection bars (20); the pressing mechanism (200) is used for pressing the metal interconnection bars (20) and the battery cell (30) having glue dots; and the curing mechanism (300) is used for curing the glue dots so that the metal interconnection bars (20) are connected to the battery cell (30) to form a connecting body.

2. The pressing and curing device (10) according to claim 1, characterized in that: The plurality of limit grooves (102) extend along the same direction, and the plurality of limit grooves (102) are arranged at intervals.

3. The pressing and curing device (10) according to claim 2, characterized in that: The plurality of limit grooves (102) are arranged at equal intervals.

4. The pressing and curing device (10) according to any one of claims 1 to 3, characterized in that: The bottom surface of each of the limiting grooves (102) is provided with an adsorption hole (103), one end of the adsorption hole (103) is open to the bottom surface of the limiting groove (102) and the other end extends to be connected with the adsorption device, and the adsorption hole (103) can generate negative pressure under the action of the adsorption device to achieve adsorption and fixation of the metal interconnection strip (20) in the limiting groove (102).

5. The pressing and curing device (10) according to claim 4, characterized in that: A plurality of adsorption holes (103) distributed at intervals are arranged in each of the limiting grooves (102).

6. The pressing and curing device (10) according to any one of claims 1 to 3 and 5, characterized in that: The pressing platform (100) is also penetrated by a light-transmitting channel (104), one end of the light-transmitting channel (104) is open to the bearing plane (101), and at least a portion of the light-transmitting channel (104) extends to the limiting groove (102) to allow light to pass through the glue point in the limiting groove (102).

7. The pressing and curing device (10) according to claim 6, characterized in that: The light-transmitting channel (104) is a long strip-shaped channel, and the extension direction of the light-transmitting channel (104) is different from the extension direction of the limiting groove (102).

8. The pressing and curing device (10) according to claim 7, characterized in that: The extension direction of the light-transmitting channel (104) is perpendicular to the extension direction of the limiting groove (102); And / or, the number of the light-transmitting channels (104) is multiple, and the multiple light-transmitting channels (104) are distributed at intervals.

9. The pressing and curing device (10) according to any one of claims 1 to 3, 5, 7 to 8, characterized in that: The pressing mechanism (200) comprises a pressing base plate (201) and pressing pins (202); a plurality of pressing pins (202) are connected to the pressing plane of the pressing base plate (201); the plurality of pressing pins (202) are distributed in a plurality of rows, and each row comprises a plurality of pressing pins (202).

10. The pressing and curing device (10) according to any one of claims 1 to 3, 5, 7 to 8, characterized in that: The curing mechanism (300) comprises a curing base plate (301) and a plurality of UV curing lamps (302), wherein the plurality of UV curing lamps (302) are distributed at intervals on the curing base plate (301).

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