UV pressing and curing device applied to BC battery piece

Abstract

The utility model discloses a UV pressing and curing device applied to BC battery pieces and a series connection machine. The UV pressing and curing device comprises a lifting assembly. The welding lamp assembly is movably arranged on the lifting assembly, the lifting assembly drives the welding lamp assembly to do linear lifting motion in the longitudinal direction, and the welding lamp assembly can do transverse linear motion relative to the lifting assembly; and the pressing needle assembly is fixedly arranged below the welding lamp assembly, and the pressing needle assembly is used for carrying out flexible pressing operation on the welding strip arranged on the curing area. The welding lamp assembly and the pressing needle assembly are sequentially driven by the lifting assembly to move downwards, so that a welding strip on a BC battery piece is flattened and tightly attached to a BC battery piece grid line, and the problem of head warping or insufficient welding and missing welding in the solidification and series connection process of an existing BC battery piece and the welding strip is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of series-connected machine technology, and more specifically, to a UV pressing and curing device and series-connected machine for BC solar cells. Background Technology

[0002] As an essential piece of equipment in photovoltaic cell string production, the main function of the series connection machine is to connect multiple cells together in series using welding ribbons to form a cell string. During the series connection process, the welding ribbon is first pulled straight from the welding ribbon reel by a welding ribbon traction mechanism. Then, the welding ribbon is cut to the required length and laid flat on the grid lines of adjacent cells. The cells with the welding ribbons placed on them are then transported by a conveyor line to the UV curing device for series connection.

[0003] In a BC series bonding machine, after the BC cells are arranged on the conveyor line, the ribbon laying device needs to clamp the prepared ribbon and lay it on the BC cells. After the ribbon is laid, it needs to be cured by a UV pressing and curing device. Unlike the traditional infrared string bonding machine that lays the ribbon and cures at the same time, due to the size limitation of the UV lamp box, the BC cells with the ribbon laid cannot be cured at one time. It is necessary to cure a string of BC cells in segments. This may cause the ribbon to curl up or have poor or missing welds. Therefore, a UV pressing and curing device and a series bonding machine for BC cells are provided to solve the above problems. Utility Model Content

[0004] One of the objectives of this invention is to provide a UV pressing and curing device and series connection machine for BC solar cells, so as to solve the problems of lifting or incomplete welding of existing BC solar cells and solder ribbons during the curing and series connection process.

[0005] The present invention relates to a UV pressing and curing device and series connection machine for BC solar cells, which can be achieved through the following technical solutions:

[0006] This utility model discloses a UV pressing and curing device for BC battery cells, comprising a lifting assembly; a welding lamp assembly movably mounted on the lifting assembly, wherein the lifting assembly drives the welding lamp assembly to perform a linear vertical lifting motion, and the welding lamp assembly is capable of performing a linear horizontal motion relative to the lifting assembly; and a pressure pin assembly fixedly mounted below the welding lamp assembly, wherein the pressure pin assembly performs a flexible pressing operation on the welding strip mounted on the curing area.

[0007] In one embodiment, the lifting assembly includes a support mechanism; a lifting drive mechanism disposed on the support mechanism and pulsatorically connected to the welding lamp assembly; and a longitudinal sliding mechanism vertically disposed on the support mechanism and connected to the welding lamp assembly.

[0008] In one embodiment, the support mechanism is further provided with at least one limiting block and at least one adjusting screw; the welding lamp assembly is provided with at least one buffer, and the position of at least one buffer corresponds to the position of the corresponding limiting block.

[0009] In one embodiment, the lifting drive mechanism includes an electric cylinder body, which is mounted on the support mechanism and drivenly connected to the welding lamp assembly; and a drive motor mounted on the electric cylinder body and drivenly connected to the electric cylinder body, which is capable of forward and reverse rotation.

[0010] In one embodiment, the longitudinal sliding mechanism includes two slide rails, which are arranged in parallel and vertically fixed on the support mechanism; and two sliding seats, which are slidably arranged on the corresponding slide rails and fixedly connected to the welding lamp assembly.

[0011] In one embodiment, the welding lamp assembly includes a sliding plate that is pulsatorically connected to the lifting drive mechanism and fixedly connected to the two sliding seats; a connecting frame disposed on the sliding plate and capable of lateral movement relative to the sliding plate; and a welding lamp body fixedly disposed below the connecting frame.

[0012] In one embodiment, the connecting frame is provided with a locking member, which fixes the relative position of the connecting frame on the sliding plate.

[0013] In one embodiment, the pressure pin assembly includes two mounting plates and multiple pressure pin mechanisms; the two mounting plates are fixedly arranged in parallel below the welding lamp assembly; the two ends of the multiple pressure pin mechanisms are detachably fixed to the corresponding mounting plates; each pressure pin mechanism includes two fixing blocks, which are symmetrically fixed to the corresponding mounting plates; a connecting plate is disposed between the two fixing blocks; multiple pressure pin structures are sequentially and movably disposed through the connecting plate; a first elastic element is provided at the connection between the fixing blocks and the connecting plate.

[0014] In one embodiment, the pressure needle structure includes a pressure needle body that is movably disposed through the connecting plate; a retaining ring fixedly disposed on one end of the pressure needle body and disposed above the connecting plate; and a second elastic member disposed between the connecting plate and the pressure needle body.

[0015] This utility model discloses a series connection machine for BC battery cells, which includes a UV pressing and curing device.

[0016] It also includes a cell coating device, a cell conveying device, a cell handling device, a welding strip feeding device, a welding strip laying device, and a cell welding strip conveying device;

[0017] The device includes a cell coating unit that applies adhesive to BC cells; a cell conveying unit that transports the coated BC cells; a cell handling unit that transports the coated BC cells from the output of the cell conveying unit to the input of the cell welding ribbon conveying unit; a welding ribbon feeding unit that places welding ribbon rolls to provide the welding ribbon required for cell string welding; a welding ribbon laying unit that lays welding ribbon of a predetermined length onto the coated BC cells at the input of the cell welding ribbon conveying unit; and a UV pressing and curing unit located above the curing area of ​​the cell welding ribbon conveying unit, which transports the coated BC cells with welding ribbon to the curing area for pressing and curing.

[0018] Compared with the prior art, the beneficial effects of this utility model of a UV pressing and curing device and series connection machine for BC solar cells are as follows:

[0019] This invention relates to a UV pressing and curing device and series connection machine for BC solar cells. A lifting assembly sequentially moves the welding lamp assembly and pressure pin assembly downwards, flattening the solder strips on the BC solar cells and ensuring they are tightly attached to the grid lines. This effectively solves the problems of warping, incomplete soldering, or missing solder joints that occur during the curing and series connection process of existing BC solar cells and solder strips. The welding lamp assembly can be adjusted laterally relative to the lifting assembly to meet the curing requirements of different BC solar cell string lengths. The vertical height of the lifting assembly driving the welding lamp assembly is adjustable, allowing precise control of the distance between the welding lamp assembly and the solar cells. Furthermore, the position of each row of pressure pins can be independently adjusted according to the desired arrangement. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a UV pressing and curing device for BC battery cells according to the present invention, including a lifting assembly, a welding lamp assembly, and a pressure needle assembly;

[0022] Figure 2 yes Figure 1 A three-dimensional structural diagram of the lifting assembly shown;

[0023] Figure 3 yes Figure 2 A side view of the lifting assembly shown.

[0024] Figure 4 yes Figure 1 A partial exploded structural diagram of the welding lamp assembly shown;

[0025] Figure 5 yes Figure 1 The diagram shows a partial exploded view of the pressure needle assembly, including the pressure needle mechanism;

[0026] Figure 6 yes Figure 5 The diagram shows the structure of the pressure needle mechanism.

[0027] The diagram indicates the following: 10, UV curing device; 11, lifting assembly; 111, support mechanism; 1111, fixing plate; 11111, first fixing hole; 1112, support plate; 112, lifting drive mechanism; 1121, electric cylinder body; 1122, drive motor; 113, longitudinal sliding mechanism; 1131, slide rail; 1132, sliding seat; 114, limit block; 115, adjusting screw; 12, welding lamp assembly; 121, sliding plate; 1211, connector; 1212 1213, Lateral sliding mechanism; 122, Buffer; 122, Connecting frame; 1221, Locking element; 1222, Cable routing channel; 123, Welding lamp body; 13, Pressure needle assembly; 131, Mounting plate; 1311, Second fixing hole; 132, Pressure needle mechanism; 1321, Fixing block; 13211, First elastic element; 1322, Connecting plate; 13221, Pad block; 1323, Pressure needle structure; 13231, Pressure needle body; 13232, Retaining ring; 13233, Second elastic element. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] Please see Figure 1As shown, the present invention discloses a UV pressing and curing device 10 for BC solar cells, which is mainly used in the series curing process of solar cell solder ribbon in a series-connected machine. It includes a lifting assembly 11, a soldering lamp assembly 12, and a pressure pin assembly 13. The lifting assembly 11 is disposed on the side of the solar cell solder ribbon conveying device. The soldering lamp assembly 12 is movably disposed on the lifting assembly 11. The lifting assembly 11 drives the soldering lamp assembly 12 to move longitudinally, so that the soldering lamp assembly 12 moves closer to or further away from the curing area on the solar cell solder ribbon conveying device, thereby curing the UV adhesive and solder ribbon on the solar cell disposed in the curing area through the soldering lamp assembly 12. The pressure pin assembly 13 is fixedly disposed below the soldering lamp assembly 12, and performs a flexible pressing operation on the solder ribbon disposed in the curing area, effectively preventing the solder ribbon from lifting or having poor soldering or missing soldering.

[0031] Please see Figures 1-3 As shown, the lifting assembly 11 includes a support mechanism 111, a lifting drive mechanism 112, a longitudinal sliding mechanism 113, at least one limiting block 114, and at least one adjusting screw 115. The support mechanism 111 is fixedly disposed on the side of the battery cell welding strip conveyor. The lifting drive mechanism 112 is disposed on the support mechanism 111 and positioned directly above the curing area on the battery cell welding strip conveyor. The welding lamp assembly 12 is connected to the lifting drive mechanism 112, and the lifting drive mechanism 112 drives the welding lamp assembly 12 to move longitudinally. The longitudinal sliding mechanism 113 is vertically disposed on the support mechanism 111 and connected to the welding lamp assembly 12, and guides the longitudinal movement of the welding lamp assembly 12. At least one limiting block 114 is fixedly disposed on the support mechanism 111, and limits the downward movement of the welding lamp assembly 12. At least one adjusting screw 115 is adjustablely disposed on the support mechanism 111, and limits the upward movement of the welding lamp assembly 12. Specifically, in this embodiment, two limiting blocks 114 are symmetrically and fixedly arranged on the support mechanism 111, and two adjusting screws 115 are symmetrically and adjustablely arranged on the support mechanism 111.

[0032] Please see Figure 2 and Figure 3As shown, in this embodiment, the support mechanism 111 includes a fixed plate 1111 and a support plate 1112. The fixed plate 1111 is fixedly mounted on the battery cell welding strip conveyor; the support plate 1112 is vertically fixedly mounted on the fixed plate 1111. Specifically, the fixed plate 1111 has multiple first fixing holes 11111 through it, and fastening screws sequentially pass through the multiple first fixing holes 11111 to fix the fixed plate 1111 onto the battery cell welding strip conveyor. In this embodiment, the lifting drive mechanism 112 includes an electric cylinder body 1121 and a drive motor 1122. The electric cylinder body 1121 is mounted on the support plate 1112 and is drive-connected to the welding lamp assembly 12. The drive motor 1122 is the power source, capable of forward and reverse rotation. The drive motor 1122 is mounted on the electric cylinder body 1121 and is drive-connected to the electric cylinder body 1121. The drive motor 1122 drives the welding lamp assembly 12 to perform linear lifting and lowering motion in the longitudinal direction through the electric cylinder body 1121. Specifically, the electric cylinder body 1121 adopts existing technology, so its specific structure and working process will not be described in detail here, as long as it meets the requirements of this application. The drive motor 1122 adopts a servo motor, thereby realizing precise control of the movement of the welding lamp assembly 12.

[0033] Please see Figure 2 and Figure 3 As shown, specifically, the longitudinal sliding mechanism 113 includes two slide rails 1131 and two sliding seats 1132; the two slide rails 1131 are arranged in parallel and are respectively vertically fixed on the support plate 1112; the two sliding seats 1132 are respectively slidably arranged on the corresponding slide rails 1131 and are respectively fixedly connected to the welding lamp assembly 12, and the welding lamp assembly 12 is guided by the cooperation of the slide rails 1131 and the sliding seats 1132.

[0034] Please see Figure 1 and Figure 4 As shown, in this embodiment, the welding lamp assembly 12 includes a sliding plate 121, a connecting frame 122, and a welding lamp body 123; the sliding plate 121 is connected to the lifting drive mechanism 112 and fixedly connected to two sliding seats 1132, and the lifting drive mechanism 112 drives the sliding plate 121 to move linearly up and down in the longitudinal direction; the connecting frame 122 is disposed on the sliding plate 121 and can move laterally relative to the sliding plate 121; the welding lamp body 123 is fixedly disposed below the connecting frame 122 and moves with the movement of the connecting frame 122.

[0035] Please see Figure 4As shown, specifically, a connector 1211 is fixedly provided on the sliding plate 121, and the connector 1211 is connected to the lifting drive mechanism 112. A transverse sliding mechanism 1212 is provided on the sliding plate 121, and the connecting frame 122 is connected to the transverse sliding mechanism 1212. The transverse sliding mechanism 1212 guides the transverse movement of the connecting frame 122. Its structure is similar to that of the longitudinal sliding mechanism 113, so its specific structure will not be described in detail here. At least one buffer 1213 is also provided on the sliding plate 121. The position of at least one buffer 1213 corresponds to the position of the corresponding limiting block 114. The downward movement of the sliding plate 121 is limited by the cooperation of the buffer 1213 and the limiting block 114. In this embodiment, two buffers 1213 are symmetrically arranged on the sliding plate 121 and correspond to the positions of the two limiting blocks 114 respectively. The buffers 1213 are hydraulic buffers.

[0036] Please see Figure 4 As shown, specifically, the connecting frame 122 is provided with a locking member 1221, which fixes the relative position of the connecting frame 122 on the sliding plate 121; the connecting frame 122 is also provided with a wiring groove 1222, through which the connecting wire is electrically connected to the welding lamp body 123. In this embodiment, the welding lamp body 123 adopts the prior art, so its specific structure will not be described in detail here, as long as it meets the requirements of this application.

[0037] Please see Figure 1 and Figure 5 As shown, in this embodiment, the pressure pin assembly 13 includes two mounting plates 131 and multiple pressure pin mechanisms 132. The two mounting plates 131 are fixedly arranged in parallel on the lower side of the welding lamp body 123. The two ends of the multiple pressure pin mechanisms 132 are detachably fixed to the corresponding mounting plates 131, and the welding strips arranged on the curing area are flexibly pressed by the multiple pressure pin mechanisms 132. Specifically, the mounting plates 131 are provided with multiple second fixing holes 1311, and the fastening screws are sequentially fixed to the lower side of the welding lamp body 123 through the multiple second fixing holes 1311.

[0038] Please see Figure 5As shown, in this embodiment, the pressure needle mechanism 132 includes two fixing blocks 1321, a connecting plate 1322, and multiple pressure needle structures 1323. The two fixing blocks 1321 are symmetrically fixed on corresponding mounting plates 131. The connecting plate 1322 is disposed between the two fixing blocks 1321. The multiple pressure needle structures 1323 are sequentially and movably disposed on the connecting plate 1322, and the positions of the multiple pressure needle structures 1323 correspond to the positions of the solder strips on the curing area, thereby facilitating flexible contact pressing operations on the solder strips. Specifically, a first elastic element 13211 is provided at the connection between the fixing blocks 1321 and the connecting plate 1322. Preferably, the first elastic element 13211 is a compression spring. Pads 13221 are respectively provided below both ends of the connecting plate 1322.

[0039] Please see Figure 5 As shown, in this embodiment, the pressure needle structure 1323 includes a pressure needle body 13231, a retaining ring 13232, and a second elastic element 13233. The pressure needle body 13231 is movably disposed on the connecting plate 1322. The retaining ring 13232 is fixedly disposed on one end of the pressure needle body 13231 and above the connecting plate 1322, thereby limiting the movement of the pressure needle body 13231 on the connecting plate 1322. The second elastic element 13233 is disposed between the connecting plate 1322 and the pressure needle body 13231, providing a buffering force for the pressing operation of the pressure needle body 13231. Specifically, the second elastic element 13233 is a spring.

[0040] This utility model discloses a series connection machine for BC battery cells, which includes a UV pressing and curing device 10.

[0041] It also includes a cell coating device, a cell conveying device, a cell handling device, a welding strip feeding device, a welding strip laying device, and a cell welding strip conveying device;

[0042] The device includes a cell coating unit that applies adhesive to BC cells; a cell conveying unit that transports the coated BC cells; a cell handling unit that transports the coated BC cells from the output end of the cell conveying unit to the input end of the cell welding strip conveying unit; a welding strip feeding unit that places welding strip rolls to provide the welding strips required for cell string welding; a welding strip laying unit that lays welding strips of a predetermined length onto the coated BC cells at the input end of the cell welding strip conveying unit; and a UV pressing and curing unit 10 located above the curing area of ​​the cell welding strip conveying unit, which transports the coated BC cells with welding strips to the curing area for pressing and curing by the UV pressing and curing unit 10.

[0043] It should be noted that the specific working process of the UV pressing and curing device and series machine for BC solar cells of this utility model is as follows: When the BC solar cell series is laid with solder ribbon, it is conveyed to the curing area by the solar cell solder ribbon conveying device. The lifting drive mechanism 112 sequentially drives the solder lamp assembly 12 and the pressure needle assembly 13 to move downward, so that the multiple pressure needle bodies 13231 on the pressure needle assembly 13 contact and connect with the solder ribbon, and at the same time, the elastic force of the second elastic element 13233 buffers and presses, so that the solder ribbon is flat with the BC solar cell. When the pad block 13221 and the solar cell solder ribbon conveying device are connected, the solder ribbon is pressed flat with the BC solar cell. When the conveyor belt plate on the upper part contacts, the pressure needle body 13231 continues to press down. The first elastic element 13211 can ensure that multiple pressure needle bodies 13231 can contact the welding ribbon. Under the irradiation of the welding lamp body 123, the UV glue on the BC battery cell and the welding ribbon are cured. After curing, the lifting drive mechanism 112 drives the welding lamp assembly 12 and the pressure needle assembly 13 to move upward in sequence. The cured part of the BC battery string is conveyed out of the curing area, and the uncured part of the BC battery string flows into the curing area. The cycle continues. After the entire battery string is cured, it is conveyed to the next station.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the 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.

[0045] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A UV compression curing device applied to BC battery sheet, characterized in that, The utility model relates to a welding lamp device, which comprises: a lifting assembly; a welding lamp assembly movably arranged on the lifting assembly, the lifting assembly driving the welding lamp assembly to make linear lifting movement in the longitudinal direction, and the welding lamp assembly being capable of making linear transverse movement relative to the lifting assembly; a pressing needle assembly fixedly arranged below the welding lamp assembly, the pressing needle assembly being capable of flexibly pressing the solder strip arranged on the curing area.

2. The UV compression curing device applied to BC battery piece according to claim 1, characterized in that, The lifting assembly comprises a supporting mechanism, a lifting driving mechanism arranged on the supporting mechanism and in transmission connection with the welding lamp assembly, and a longitudinal sliding mechanism vertically arranged on the supporting mechanism and connected with the welding lamp assembly.

3. The UV compression curing device applied to BC battery piece according to claim 2, characterized in that, At least one limiting block and at least one adjusting screw are respectively arranged on the supporting mechanism, and at least one buffer is arranged on the welding lamp assembly, the position of the buffer corresponding to the position of the corresponding limiting block.

4. The UV compression curing device applied to BC battery piece according to claim 2, characterized in that, The lifting driving mechanism comprises an electric cylinder main body arranged on the supporting mechanism and in transmission connection with the welding lamp assembly, and a driving motor arranged on the electric cylinder main body and in transmission connection with the electric cylinder main body, the driving motor being capable of forward and reverse rotation.

5. The UV compression curing device applied to BC battery piece according to claim 3, characterized in that, The longitudinal sliding mechanism comprises two slide rails arranged in parallel and vertically fixed on the supporting mechanism, and two sliding seats respectively arranged on the corresponding slide rails and fixedly connected with the welding lamp assembly.

6. The UV compression curing device applied to BC battery piece according to claim 5, characterized in that, The welding lamp assembly comprises a sliding plate in transmission connection with the lifting driving mechanism and fixedly connected with the two sliding seats, a connecting frame arranged on the sliding plate and capable of making transverse movement relative to the sliding plate, and a welding lamp main body fixedly arranged below the connecting frame.

7. The UV compression curing device applied to BC battery piece according to claim 6, characterized in that, The connecting frame is provided with a locking member for fixing the relative position of the connecting frame on the sliding plate.

8. The UV compression curing device applied to BC battery piece according to claim 1, characterized in that, The pressing needle assembly comprises two mounting plates and a plurality of pressing needle mechanisms, the two mounting plates being fixedly arranged in parallel below the welding lamp assembly, the two ends of the plurality of pressing needle mechanisms being detachably fixed on the corresponding mounting plates, the pressing needle mechanism comprising two fixed blocks symmetrically fixed on the corresponding mounting plate, a connecting plate arranged between the two fixed blocks, a plurality of pressing needle structures sequentially movably arranged on the connecting plate, and the connecting part of the fixed block and the connecting plate being provided with a first elastic member.

9. The UV compression curing device applied to BC battery piece according to claim 8, characterized in that, The pressing needle structure comprises a pressing needle main body movably arranged on the connecting plate, a stop ring fixedly arranged on one end of the pressing needle main body and above the connecting plate, and a second elastic member arranged between the connecting plate and the pressing needle main body.

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