Solder strip support mechanism, solder strip supply device and stringer

Abstract

The application relates to a welding strip supporting mechanism, a welding strip feeding device and a string welding machine. The welding strip supporting mechanism comprises a supporting assembly and a flux removing assembly. The supporting assembly and the flux removing assembly are arranged at intervals in the traction direction of the welding strip. The supporting assembly is provided with a limiting channel for the welding strip to pass through. The flux removing assembly is used for supporting the welding strip and removing the excess flux on the surface of the welding strip. In the process of welding strip feeding, the welding strip passes through the limiting channel. The limiting channel can support the welding strip, prevent the welding strip from shaking, reduce the deformation of the welding strip caused by shaking, and simultaneously limit and guide the welding strip to move along the traction direction, so that the welding strip is prevented from deviating and pad spot welding is avoided. In addition, the flux removing assembly can not only support the welding strip and reduce the deformation of the welding strip, but also remove the excess flux on the surface of the welding strip, so that the flux is prevented from dropping on the battery piece and affecting the yield of the photovoltaic module.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module manufacturing technology, and in particular to a welding strip support mechanism, a welding strip feeding device, and a string welding machine. Background Technology

[0002] In the cell-to-strip welding process, a strip traction mechanism is used to clamp and move the strip. For strips with small radii, such as 0.24mm or 0.26mm, the strip is prone to deformation due to machine vibration during traction. This deformation can cause the strip to shift, affecting the welding quality between the cell and the strip. Furthermore, excess flux on the strip surface can drip onto the cell, impacting the yield of the photovoltaic module. Utility Model Content

[0003] Therefore, it is necessary to provide a solder strip support mechanism, a solder strip feeding device, and a string welding machine to avoid solder strip pad spot welding deviation and to prevent flux from dripping onto the solar cells and affecting the yield of photovoltaic modules.

[0004] In a first aspect, this application provides a solder strip support mechanism, including a support component and a flux removal component. The support component and the flux removal component are spaced apart in the traction direction of the solder strip. The support component is provided with a limiting channel for the solder strip to pass through in order to support and limit the solder strip. The flux removal component is used to support the solder strip and remove excess flux from the surface of the solder strip.

[0005] In one embodiment, the support component includes a first support base and a second support base, the first support base and the second support base are stacked, the first support base is provided with a first limiting groove, the second support base is provided with a second limiting groove, and the first limiting groove and the second limiting groove surround to form the limiting channel;

[0006] Alternatively, one of the first support base and the second support base is provided with a limiting groove, and the limiting groove cooperates with the other of the first support base and the second support base to form the limiting channel;

[0007] Alternatively, the support assembly may include a support base having a limiting channel.

[0008] In one embodiment, the limiting channels are provided in multiple ways, and the multiple limiting channels pass through the support assembly along the traction direction of the welding strip, and the multiple limiting channels are arranged at intervals along the direction intersecting with the welding strip.

[0009] In one embodiment, the flux removal assembly includes a support frame and a removal component, the removal component being disposed on the support frame and used to remove excess flux from the surface of the solder strip.

[0010] In one embodiment, the support frame has a support platform for being disposed below the welding strip; the cleaning member covers the side of the support platform facing the welding strip and is used to contact or clearance fit with the welding strip.

[0011] In one embodiment, at least one of the support components is provided upstream of the flux removal assembly; and / or, at least one of the support components is provided downstream of the flux removal assembly.

[0012] In one embodiment, the support assembly and the flux removal assembly are arranged at equal intervals in the traction direction of the solder strip.

[0013] Secondly, this application also provides a welding strip feeding device, comprising:

[0014] A solder strip coating mechanism for coating solder strips with flux;

[0015] A welding strip traction mechanism, wherein the welding strip traction mechanism is used to clamp and traction the welding strip; and

[0016] The welding strip support mechanism of any of the above is located between the welding strip coating mechanism and the welding strip traction mechanism.

[0017] In one embodiment, the welding strip feeding device further includes a guide comb, which is disposed between the welding strip coating mechanism and the welding strip traction mechanism and is close to the welding strip coating mechanism, and the welding strip support mechanism is disposed between the guide comb and the welding strip traction mechanism.

[0018] Thirdly, this application also provides a string welding machine, including the welding strip support mechanism of any of the above.

[0019] The aforementioned ribbon support mechanism, ribbon feeding device, and stringer all utilize a limiting channel during ribbon feeding. This channel supports the ribbon, preventing vibration and reducing deformation caused by vibration. Simultaneously, the limiting channel also guides and limits the ribbon, ensuring it moves along its traction direction and preventing deviation. This avoids misalignment during pad welding. Furthermore, the flux removal component not only supports the ribbon and reduces deformation but also removes excess flux from the ribbon surface, preventing flux dripping onto the solar cells and affecting the photovoltaic module yield. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a welding strip support mechanism according to an embodiment of this application.

[0021] Figure 2 This is a front view of the support component structure according to an embodiment of this application.

[0022] Explanation of icon numbers:

[0023] 10. Welding strip support mechanism; 11. Support assembly; 111. Limiting channel; 112. First support seat; 1121. First limiting groove; 113. Second support seat; 1131. Second limiting groove; 12. Flux removal assembly; 121. Support frame; 1211. Support platform; 122. Cleaning component; 20. Welding strip. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] One embodiment of this application provides a string welding machine, including a ribbon feeding device and a welding device. The ribbon feeding device is used to provide ribbon 20, and the welding device is used to weld the battery cells to the ribbon 20.

[0026] In one embodiment, the welding strip feeding device includes a welding strip coating mechanism and a welding strip traction mechanism. The welding strip coating mechanism is used to coat the welding strip 20 with flux, and the welding strip traction mechanism is located downstream of the welding strip coating mechanism and is used to clamp and traction the welding strip 20.

[0027] During operation, the unwound welding strip 20 enters the welding strip coating mechanism, which applies flux to the surface of the welding strip 20. The flux-coated welding strip 20 then enters the welding strip traction mechanism, which clamps and pulls the welding strip 20 to transport it to the downstream mechanism. In this way, the welding strip feeding device can supply welding strip 20 to the string welding machine.

[0028] However, for solder strips 20 with small radii, such as 0.24mm or 0.26mm, the solder strip 20 is prone to deformation due to machine vibration during the feeding and traction process. This deformation can lead to solder strip misalignment, affecting the welding quality between the solar cell and the solder strip 20. Therefore, in this embodiment, the solder strip feeding device also includes a solder strip support mechanism 10. The solder strip support mechanism 10 is located downstream of the solder strip coating mechanism, specifically between the solder strip coating mechanism and the solder strip traction mechanism. Thus, during the feeding and traction process of the solder strip 20, the solder strip support mechanism 10 supports the solder strip 20, preventing it from vibrating, reducing deformation caused by vibration, avoiding misalignment of the solder strip 20 pad welding, and ensuring the yield of the photovoltaic module.

[0029] Furthermore, the welding strip feeding device also includes a guide comb. The guide comb is located between the welding strip coating mechanism and the traction mechanism, and is positioned close to the welding strip coating mechanism. During the feeding and traction process of the welding strip 20, the welding strip 20 passes through the guide comb, which guides the welding strip 20 and reduces the phenomenon of welding strip 20 deviating.

[0030] Furthermore, the welding strip support mechanism 10 is located between the guide comb and the welding strip traction mechanism. It can be understood that the welding strip support mechanism 10 supports the welding strip 20 located between the guide comb and the welding strip traction mechanism.

[0031] In one embodiment, see Figure 1 The solder ribbon support mechanism 10 includes a support assembly 11 and a flux removal assembly 12. The support assembly 11 and the flux removal assembly 12 are spaced apart along the traction direction of the solder ribbon 20. The traction direction of the solder ribbon 20 refers to its direction of travel, denoted by X. The support assembly 11 has a limiting channel 111, the cross-sectional dimensions of which are adapted to the cross-sectional dimensions of the solder ribbon 20. The limiting channel 111 allows the solder ribbon 20 to pass through. The limiting channel 111 extends through the support assembly 11 along the traction direction of the solder ribbon 20. The flux removal assembly 12 removes excess flux from the surface of the solder ribbon 20.

[0032] During the feeding process of the solder ribbon 20, the solder ribbon 20 passes through the limiting channel 111. The limiting channel 111 supports the solder ribbon 20, preventing it from shaking and reducing deformation caused by shaking. Simultaneously, the limiting channel 111 also limits and guides the solder ribbon 20, ensuring it moves along its traction direction and preventing it from deviating from its intended path. This avoids misalignment of the solder ribbon 20 pad welding. The flux removal component 12 not only supports the solder ribbon 20 and reduces deformation, but also removes excess flux from its surface, preventing flux dripping onto the solar cells and affecting the yield of the photovoltaic module.

[0033] In one embodiment, see Figure 1 Multiple limiting channels 111 are provided, each extending along a first direction and spaced apart along a second direction. The first and second directions intersect. Optionally, the first and second directions are perpendicular, with X representing the first direction and Y representing the second direction. In this way, the support assembly 11 can simultaneously support multiple solder strips 20, preventing them from shaking and reducing deformation caused by shaking. Simultaneously, the support assembly 11 can also limit and guide the multiple solder strips 20, ensuring stable movement along their traction direction. This prevents misalignment of the solder strips 20 during spot welding and also helps increase production capacity.

[0034] In one embodiment, see Figure 1 and Figure 2 The support assembly 11 includes a first support base 112 and a second support base 113, which are stacked together. The first support base 112 has a first limiting groove 1121, and the second support base 113 has a second limiting groove 1131. The first limiting groove 1121 and the second limiting groove 1131 form a limiting channel 111. In this way, the first support base 112 and the second support base 113 can be precision machined separately before being stacked and assembled, achieving a secondary precision superposition of separate machining and combined positioning, which is beneficial to improving accuracy and reducing machining difficulty. If the first support base 112 or the second support base 113 is worn, only the worn first support base 112 or the second support base 113 needs to be replaced, which helps to reduce maintenance costs.

[0035] Optionally, the first limiting groove 1121 has a semi-circular cross-sectional shape, and the second limiting groove 1131 has a semi-circular cross-sectional shape. Of course, in other embodiments, the first limiting groove 1121 has a square cross-sectional shape, and the second limiting groove 1131 has a square cross-sectional shape.

[0036] Further, see Figure 1 and Figure 2 Multiple first limiting grooves 1121 are provided, each extending along a first direction and spaced apart along a second direction. Multiple second limiting grooves 1131 are also provided, each extending along the first direction and spaced apart along the second direction. The multiple first limiting grooves 1121 and the multiple second limiting grooves 1131 are configured in a one-to-one correspondence. This forms multiple limiting channels 111.

[0037] Of course, in other embodiments, one of the first support base 112 and the second support base 113 is provided with a limiting groove, which cooperates with the other of the first support base 112 and the second support base 113 to form a limiting channel 111. Alternatively, the support assembly 11 may include only one support base, which is provided with the limiting channel 111.

[0038] In one embodiment, see Figure 1 The flux removal assembly 12 includes a support frame 121 and a removal component 122. The removal component 122 is disposed on the support frame 121 and is used to remove excess flux from the surface of the solder ribbon 20. During the feeding process of the solder ribbon 20, the removal component 122 can remove excess flux from the surface of the solder ribbon 20, preventing flux from dripping onto the solar cells and affecting the yield of the photovoltaic module.

[0039] In one embodiment, see Figure 1 The support frame 121 has a support platform 1211, which is located below the welding strip 20. In this way, the support platform 1211 can provide a setting position for the cleaning component 122, improving the convenience of setting the cleaning component 122.

[0040] Furthermore, the cleaning component 122 covers the upper surface of the support platform 1211, and is located below the solder strip 20, contacting or clearance-fitting the solder strip 20. It is understood that the upper surface of the support platform 1211 is the side of the support platform 1211 facing the solder strip 20. Optionally, the cleaning component 122 is a wiping sponge or a wiping cloth.

[0041] During the feeding process of the solder ribbon 20, the flux accumulates at the bottom of the solder ribbon 20 under its own gravity. Therefore, in this embodiment, a cleaning component 122 is provided below the solder ribbon 20. This cleaning component 122 can wipe away the flux accumulated at the bottom of the solder ribbon 20, thereby better removing excess flux from the surface of the solder ribbon 20. During the feeding process of the solder ribbon 20, the solder ribbon 20 is in contact or in a gap fit with the cleaning component 122. The cleaning component 122 can support the solder ribbon 20 and reduce the deformation of the solder ribbon 20 caused by shaking. In addition, it also makes it easier for operators to check the flattening state of the solder ribbon 20.

[0042] Of course, in other embodiments, the support frame 121 is provided with a vacuum port, and the cleaning component 122 is a vacuum pump, with the suction port of the vacuum pump connected to the vacuum port. During the feeding process of the solder ribbon 20, the vacuum pump is started, so that the vacuum port is in a negative pressure state. When the solder ribbon 20 passes through the vacuum port, the excess flux on the surface of the solder ribbon 20 can be sucked away by the vacuum port, thereby removing the flux from the surface of the solder ribbon 20.

[0043] In one embodiment, at least one support component 11 is provided upstream of the flux removal component 12. It is understood that the upstream of the flux removal component 12 refers to the area between the flux removal component 12 and the solder ribbon coating mechanism. Thus, the support component 11 upstream of the flux removal component 12 can support the solder ribbon 20, preventing it from shaking and ensuring that the solder ribbon 20 and the removal component 122 are always in close contact or with a clearance fit, which is beneficial for improving the flux removal effect.

[0044] Of course, in other embodiments, at least one support component 11 is provided downstream of the flux removal component 12. It is understood that "downstream of the flux removal component 12" refers to the area between the flux removal component 12 and the solder ribbon traction mechanism. The support component 11 downstream of the flux removal component 12 can support the solder ribbon 20 after flux removal, preventing the solder ribbon 20 from shaking and reducing deformation caused by shaking. Simultaneously, the support component 11 downstream of the flux removal component 12 can also limit and guide the solder ribbon 20 after flux removal, allowing the solder ribbon 20 to move along its traction direction and preventing the solder ribbon 20 from deviating.

[0045] Of course, in other embodiments, see [reference] Figure 1 At least one support component 11 is provided upstream of the flux removal assembly 12, and at least one support component 11 is provided downstream of the flux removal assembly 12. Thus, the upstream and downstream support components 11 of the flux removal assembly 12 can support the solder ribbon 20, preventing it from shaking during the wiping process and ensuring that the surface of the solder ribbon 20 remains in close contact or with a clearance fit with the removal component 122. This improves the flux removal effect. Furthermore, it further prevents the solder ribbon 20 from shaking, reduces deformation caused by shaking, and avoids misalignment of the solder ribbon 20 pad during spot welding.

[0046] Specifically, in this embodiment, see [reference] Figure 1 There are two support components 11, which are respectively located on both sides of the flux removal component 12 in the traction direction of the solder strip 20.

[0047] In one embodiment, the support assembly 11 and the flux removal assembly 12 are equally spaced along the traction direction of the solder strip 20. This arrangement ensures that the solder strip 20 has equidistant support points, with consistent overhang lengths between adjacent support points. Deflection and tension fluctuations are evenly distributed, maintaining the same horizontal reference throughout the traction process. This eliminates localized vibrations in the solder strip 20, reduces deformation caused by vibration, prevents misalignment of the solder strip 20 pads, and improves the flux removal effect.

[0048] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0049] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0053] 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 above 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.

[0054] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A strip support mechanism (10) characterized by, The device includes a support assembly (11) and a flux removal assembly (12). The support assembly (11) and the flux removal assembly (12) are spaced apart in the traction direction of the solder strip (20). The support assembly (11) is provided with a limiting channel (111) for the solder strip (20) to pass through in order to support and limit the solder strip (20). The flux removal assembly (12) is used to support the solder strip (20) and remove excess flux from the surface of the solder strip (20).

2. The strip support mechanism (10) according to claim 1, characterized in that The support assembly (11) includes a first support base (112) and a second support base (113). The first support base (112) and the second support base (113) are stacked. The first support base (112) is provided with a first limiting groove (1121), and the second support base (113) is provided with a second limiting groove (1131). The first limiting groove (1121) and the second limiting groove (1131) surround and form the limiting channel (111). Alternatively, one of the first support base (112) and the second support base (113) is provided with a limiting groove, and the limiting groove cooperates with the other of the first support base (112) and the second support base (113) to form the limiting channel (111). Alternatively, the support assembly (11) may include a support base having a limiting channel (111).

3. The strip support mechanism (10) according to claim 1, characterized in that The limiting channel (111) is provided in multiple ways. The multiple limiting channels (111) pass through the support assembly (11) along the traction direction of the welding strip (20). The multiple limiting channels (111) are arranged at intervals along the direction intersecting with the welding strip (20).

4. The strip support mechanism (10) according to claim 1, characterized in that The flux removal assembly (12) includes a support frame (121) and a removal component (122). The removal component (122) is disposed on the support frame (121) and is used to remove excess flux from the surface of the solder strip (20).

5. The strip support mechanism (10) according to claim 4, characterized in that The support frame (121) has a support platform (1211) for being positioned below the welding strip (20); the cleaning member (122) covers the side of the support platform (1211) facing the welding strip (20), and the cleaning member (122) is used to contact or gap fit with the welding strip (20).

6. The strip support mechanism (10) according to any one of claims 1 to 5, characterized in that At least one of the support components (11) is provided upstream of the flux removal assembly (12); and / or, at least one of the support components (11) is provided downstream of the flux removal assembly (12).

7. The strip support mechanism (10) according to any one of claims 1 to 5, characterized in that The support assembly (11) and the flux removal assembly (12) are arranged at equal intervals in the traction direction of the solder strip (20).

8. A strip feed device, characterized in that include: A solder strip coating mechanism for coating flux onto solder strips (20); A welding strip traction mechanism, wherein the welding strip traction mechanism is used to clamp and traction the welding strip (20); and The welding strip support mechanism (10) as described in any one of claims 1 to 7 is disposed between the welding strip coating mechanism and the welding strip traction mechanism.

9. The solder strip supply device of claim 8, wherein The welding strip feeding device also includes a guide comb, which is located between the welding strip coating mechanism and the welding strip traction mechanism and close to the welding strip coating mechanism. The welding strip support mechanism (10) is located between the guide comb and the welding strip traction mechanism.

10. A stringer welding machine characterized by, Includes the welding strip support mechanism (10) as described in any one of claims 1 to 7.

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