Solder ribbon positioning module and string soldering machine

Abstract

A solder ribbon positioning module, comprising a module guide fixing block (10), a soldering ejector strip mounting block (20) and a soldering ejector strip (30), wherein the module guide fixing block (10) is vertically movably connected to the soldering ejector strip mounting block (20); a guide groove (11) for accommodating the soldering ejector strip (30) therein runs through the module guide fixing block (10); the soldering ejector strip (30) is connected to the soldering ejector strip mounting block (20) and can move up and down in the guide groove (11), and the width of the guide groove (11) is greater than that of the soldering ejector strip (30); and the soldering ejector strip (30) is configured to press a solder ribbon, and the soldering ejector strip (30) passes through the guide groove (11). Since the soldering ejector strip (30) passes through the guide groove (11), when the solder ribbon is soldered by means of the soldering ejector strip (30), there is no gap due to the strip shape of the soldering ejector strip (30), thereby preventing the problem of deviation of the solder ribbon caused by solder dross within the guide groove (11), and thus ensuring the soldering effect of the solder ribbon.

Description

A welding strip positioning module and a stringer

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Utility Model Patent Application No. 202421903403.2, filed on August 7, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the field of solar photovoltaic modules, in particular to a welding strip positioning module and a stringer comprising such a welding strip positioning module. BACKGROUND

[0004] Currently, the photovoltaic industry welds the cell and the welding strip through the welding positioning module of the welding and stringing integrated stringer. The welding positioning module generally comprises a die holder, a top pin and a pressing plate. The die holder is provided with a groove and a hole for accommodating and guiding the top pin, the top pin is assembled in the groove in a suspended manner and extends out of the hole, and the pressing plate is assembled on the die holder to shield the side surface of the top pin. A guide groove is provided on the die holder, and the welding strip can be accommodated in the guide groove. The welding strip is given a force by driving the top pin to face the cell, so that the welding strip is welded on the cell.

[0005] However, during welding, the molten solder flows into the guide groove, which easily causes the accumulation of solder residues in the guide groove, and the solder residues easily cause the welding strip to deviate when the welding strip moves in the guide groove, affecting the welding effect.

[0006] DISCLOSURE

[0007] To at least partially solve the above technical problems, the present disclosure provides, in one aspect, a welding strip positioning module, comprising a module guide fixed block, a welding top strip mounting block and a welding top strip; wherein the module guide fixed block is movably connected to the welding top strip mounting block, a guide groove is provided in the module guide fixed block for accommodating the welding top strip therein, the welding top strip is connected to the welding top strip mounting block and is movable up and down in the guide groove, and the width of the guide groove is greater than the width of the welding top strip.

[0008] The welding top strip is used for extruding the welding strip, and the welding top strip penetrates the guide groove.

[0009] In some embodiments, a plurality of protrusions are provided in the side wall of the guide groove, and a plurality of grooves are correspondingly provided in the side wall of the welding top strip, and the protrusions are respectively accommodated in the grooves.

[0010] In some embodiments, the plurality of protrusions are arranged in the two side walls of the guide groove in pairs respectively opposite to each other, and correspondingly, the plurality of grooves are arranged in the two side walls of the welding top strip in pairs respectively opposite to each other.

[0011] In some embodiments, the width of the guide slot at the position corresponding to the position without the protrusion is in the range of 1-5mm, and the width of the guide slot at the position corresponding to the position with the protrusion is in the range of 0.6-2mm.

[0012] The width of the welding top strip at the position corresponding to the position without the groove is in the range of 0.8-4.8mm, and the width of the welding top strip at the position corresponding to the position with the groove is in the range of 0.4-1.8mm.

[0013] In some embodiments, the sizes of the protrusion and the groove are configured such that the gap width between the side wall of the guide slot and the side wall of the welding top strip is narrowed at the position where the protrusion and the groove are arranged.

[0014] In some embodiments, a plurality of connecting pins are arranged below the module guide fixing block, and a plurality of first connecting holes are arranged on the welding top strip mounting block, and the connecting pins are slidably inserted into the first connecting holes.

[0015] In some embodiments, the shape of the groove is a circular-arc-shaped groove, and the shape of the protrusion is a circular-arc-shaped protrusion.

[0016] In some embodiments, a PTFE cloth is arranged on the upper surface of the welding top strip for contacting the solder strip.

[0017] In some embodiments, the PTFE cloth is pasted on the welding top strip, and the ends of the PTFE cloth are fixed on the welding top strip by the pressing block and the fastener.

[0018] In some embodiments, the thickness of the PTFE cloth is in the range of 0.1-0.3mm.

[0019] Another aspect of the present disclosure provides a stringer, which comprises any of the foregoing solder strip positioning modules.

[0020] The solder strip positioning module provided by the present disclosure replaces the top pin in the prior art with the welding top strip. Since the welding top strip penetrates the guide slot, the welding top strip does not have gaps when welding the solder strip, i.e., the molten tin does not flow into the guide slot from the gap between the top pins during welding, thereby avoiding the problem of tin residue accumulation in the guide slot, which ensures the welding effect of the solder strip.

[0021] In addition, since the welding top strip is designed to reduce tin residue accumulation, the cleaning frequency of the guide slot is reduced, and the labor cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] FIG. 1 shows a perspective view of a solder strip positioning module according to an embodiment of the present disclosure;

[0023] FIG. 2 shows an exploded view of a solder strip positioning module according to an embodiment of the present disclosure;

[0024] FIG. 3 shows another perspective view of the solder strip positioning module of FIG. 1, with the solder top bar removed;

[0025] FIG. 4 shows a plan view of a module guide fixing block according to an embodiment of the present disclosure;

[0026] FIG. 5 shows a plan view of a solder top bar according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] The solder strip positioning module and stringer machine disclosed by the present disclosure are further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present disclosure will be more apparent according to the following detailed description and claims. It should be noted that the accompanying drawings are all very simplified and use non-precise ratios, only for the purpose of facilitating and clearly assisting in the description of the embodiments of the present disclosure.

[0028] The present disclosure provides a solder strip positioning module, comprising a module guide fixing block, a solder top bar mounting block, and a solder top bar. The module guide fixing block is movably connected to the solder top bar mounting block, a guide groove is provided in the module guide fixing block for accommodating the solder top bar, the solder top bar is connected to the solder top bar mounting block and is movable up and down in the guide groove, and the width of the guide groove is greater than the width of the solder top bar; wherein the solder top bar is used to extrude the solder strip, and the solder top bar penetrates the guide groove.

[0029] The solder strip positioning module provided by the present disclosure replaces the top pin in the prior art with a solder top bar. Since the solder top bar penetrates the guide groove, the solder top bar does not have gaps when extruding the solder strip because it is in the form of a strip. This avoids the problem of tin slag accumulation caused by the molten tin flowing into the guide groove from the gap between the top pins during welding, thereby avoiding the problem of solder strip deviation caused by tin slag in the guide groove and ensuring the welding effect of the solder strip.

[0030] In addition, the design of the solder top bar reduces tin slag accumulation, which reduces the cleaning frequency of the guide groove and reduces labor costs.

[0031] Referring to FIGS. 1-5, a solder strip positioning module according to the present disclosure is described.

[0032] The present disclosure provides a solder strip positioning module, comprising a module guide fixing block 10, a solder top bar mounting block 20, and a solder top bar 30.

[0033] The module guide fixing block 10 is movably connected with the welding top bar mounting block 20, for example, slidably connected. As shown in FIG. 2, the module guide fixing block 10 includes support structures 13 formed at both ends thereof, which define receiving spaces for receiving the welding top bar mounting block 20. A plurality of connecting pins 12 are arranged on the lower side of the module guide fixing block 10, and a plurality of first connecting holes 22 are arranged on the welding top bar mounting block 20, the connecting pins 12 being slidably inserted into the first connecting holes 22. Specifically, the connecting pins 12 are arranged on the inner side of the support structures 13, for insertion into the first connecting holes 22 of the welding top bar mounting block 20, so that the welding top bar mounting block 20 is movably connected with the module guide fixing block 10 in the vertical direction (relative to the perspective view shown in FIG. 1), thereby driving the welding top bar 30 connected to the welding top bar mounting block 20 to move up and down in the vertical direction.

[0034] The module guide fixing block 10 is movably connected with the welding top bar mounting block 20, for example, slidably connected. As shown in FIG. 2, the module guide fixing block 10 includes support structures 13 formed at both ends thereof, which define receiving spaces for receiving the welding top bar mounting block 20. A plurality of connecting pins 12 are arranged on the lower side of the module guide fixing block 10, and a plurality of first connecting holes 22 are arranged on the welding top bar mounting block 20, the connecting pins 12 being slidably inserted into the first connecting holes 22. Specifically, the connecting pins 12 are arranged on the inner side of the support structures 13, for insertion into the first connecting holes 22 of the welding top bar mounting block 20, so that the welding top bar mounting block 20 is movably connected with the module guide fixing block 10 in the vertical direction (relative to the perspective view shown in FIG. 1), thereby driving the welding top bar 30 connected to the welding top bar mounting block 20 to move up and down in the vertical direction.

[0035] The module guide fixing block 10 is movably connected with the welding top bar mounting block 20, for example, slidably connected. As shown in FIG. 2, the module guide fixing block 10 includes support structures 13 formed at both ends thereof, which define receiving spaces for receiving the welding top bar mounting block 20. A plurality of connecting pins 12 are arranged on the lower side of the module guide fixing block 10, and a plurality of first connecting holes 22 are arranged on the welding top bar mounting block 20, the connecting pins 12 being slidably inserted into the first connecting holes 22. Specifically, the connecting pins 12 are arranged on the inner side of the support structures 13, for insertion into the first connecting holes 22 of the welding top bar mounting block 20, so that the welding top bar mounting block 20 is movably connected with the module guide fixing block 10 in the vertical direction (relative to the perspective view shown in FIG. 1), thereby driving the welding top bar 30 connected to the welding top bar mounting block 20 to move up and down in the vertical direction.

[0036] The module guide fixing block 10 is movably connected with the welding top bar mounting block 20, for example, slidably connected. As shown in FIG. 2, the module guide fixing block 10 includes support structures 13 formed at both ends thereof, which define receiving spaces for receiving the welding top bar mounting block 20. A plurality of connecting pins 12 are arranged on the lower side of the module guide fixing block 10, and a plurality of first connecting holes 22 are arranged on the welding top bar mounting block 20, the connecting pins 12 being slidably inserted into the first connecting holes 22. Specifically, the connecting pins 12 are arranged on the inner side of the support structures 13, for insertion into the first connecting holes 22 of the welding top bar mounting block 20, so that the welding top bar mounting block 20 is movably connected with the module guide fixing block 10 in the vertical direction (relative to the perspective view shown in FIG. 1), thereby driving the welding top bar 30 connected to the welding top bar mounting block 20 to move up and down in the vertical direction.

[0037] The module guide fixing block 10 is movably connected with the welding top bar mounting block 20, for example, slidably connected. As shown in FIG. 2, the module guide fixing block 10 includes support structures 13 formed at both ends thereof, which define receiving spaces for receiving the welding top bar mounting block 20. A plurality of connecting pins 12 are arranged on the lower side of the module guide fixing block 10, and a plurality of first connecting holes 22 are arranged on the welding top bar mounting block 20, the connecting pins 12 being slidably inserted into the first connecting holes 22. Specifically, the connecting pins 12 are arranged on the inner side of the support structures 13, for insertion into the first connecting holes 22 of the welding top bar mounting block 20, so that the welding top bar mounting block 20 is movably connected with the module guide fixing block 10 in the vertical direction (relative to the perspective view shown in FIG. 1), thereby driving the welding top bar 30 connected to the welding top bar mounting block 20 to move up and down in the vertical direction.

[0038] Alternatively, the soldering tip 30 can include a tip body 31 and a base portion 32. The shape of the tip body 31 is configured to allow vertical movement of the tip body 31 in the guide slot 11.

[0039] By using the soldering tip 30 instead of the existing technology tip pin, since the soldering tip is a strip shape, there is no gap, that is, the problem of solder residue accumulation in the guide slot is avoided, and the problem of solder residue accumulation in the guide slot is avoided, thereby avoiding the problem of solder residue accumulation in the guide slot.

[0040] According to the solder strip positioning module of the present disclosure, the module cover plate and the module cover plate mounting block in the prior art are combined into a module guide fixing block 10, which has the advantages of simple design, easy disassembly and low cost.

[0041] In some embodiments, alternatively, a plurality of protrusions 101 are provided in the side wall of the guide slot 11, and a plurality of grooves 301 are correspondingly provided in the side wall 30a of the soldering tip 30, the protrusions 101 are respectively accommodated in the grooves 301, to facilitate the vertical movement of the soldering tip 30 in the guide slot 11 during soldering. And the plurality of protrusions 101 divide the guide slot 11 into different sizes of slot widths, and the solder residues in different sections of the guide slot 11 will not be stacked together, thereby also preventing the solder strip on the upper surface 33 of the soldering tip 30 from being offset.

[0042] As shown best in FIG. 4, the plurality of protrusions 101 are respectively arranged opposite to each other in the two side walls of the guide slot 11. Correspondingly, the plurality of grooves 301 are respectively arranged opposite to each other in the two side walls 30a of the soldering tip 30. The opposite symmetrical arrangement of the protrusions 101 and the grooves 301 facilitates the stability and orientation of the soldering tip 30 in the guide slot 11, and facilitates the prevention of solder strip offset.

[0043] Preferably, the sizes of the protrusions 101 and the grooves 301 are configured such that the gap width between the side wall of the guide slot 11 and the side wall 30a of the soldering tip 30 is narrowed at the positions where the protrusions 101 and the grooves 301 are provided (relative to other positions where the protrusions 101 and the grooves 301 are not provided), to further facilitate the stability and orientation of the soldering tip 30 in the guide slot 11, and to facilitate the prevention of solder strip offset.

[0044] In some embodiments, the width of the guide groove 11 at the location where the protrusion 101 is not provided is in the range of 1-5 mm, such as 1 mm, 2 mm, 3 mm, 4 mm or 5 mm. The width of the guide groove 11 at the location where the protrusion 101 is provided is in the range of 0.6-2 mm, such as 0.6 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm or 2 mm. The width of the solder top strip 30 at the location where the groove 301 is not provided is in the range of 0.8-4.8 mm, such as 0.8 mm, 1.8 mm, 2.8 mm, 3.8 mm or 4.8 mm. The width of the solder top strip 30 at the location where the groove 301 is provided is in the range of 0.4-1.8 mm, such as 0.4 mm, 0.8 mm, 1 mm, 1.2 mm, 1.4 mm or 1.8 mm. The width of the guide groove in the prior art is 0.7 mm, and the width of the guide groove in the embodiments of the present disclosure is in the range of 1-5 mm, which is wider than the width of the guide groove in the prior art. This is beneficial to increase the storage of tin dross, reduce the accumulation of tin dross, reduce the frequency of cleaning, prolong the tin dross cleaning cycle, and prevent the tin dross from blocking the solder ribbon and causing the solder ribbon to deviate when the solder ribbon is stretched.

[0045] As an example, the local width of the guide groove 11 at the location where the protrusion 101 is provided is 0.8 mm, and the local width of the solder top strip 30 at the location where the groove 301 is provided is 0.6 mm. In this case, the gap width between the side wall of the guide groove 11 and the side wall 30a of the solder top strip 30 is 0.2 mm.

[0046] In particular, in a preferred embodiment, the width of the guide groove 11 is 3.5 mm, and the width of the solder top strip 30 is 3.0 mm. In this case, the gap width between the side wall of the guide groove 11 and the side wall 30a of the solder top strip 30 is 0.5 mm. As used herein, the gap width between the side wall of the guide groove 11 and the side wall 30a of the solder top strip 30 refers to the sum of the gap width between one side wall 30a of the solder top strip 30 and the side wall of the guide groove 11 opposite to it and the gap width between the other side wall 30a of the solder top strip 30 and the other side wall of the guide groove 11 opposite to it. Therefore, the gap width between the side wall of the guide groove 11 and the side wall 30a of the solder top strip 30 can be obtained by subtracting the distance between the two side walls 30a of the solder top strip 30 from the distance between the two side walls of the guide groove 11 (i.e. the width).

[0047] As used herein, the local width of the guide groove 11 at the location provided with the protrusion 101 is measured as the minimum width of the guide groove 11 at the location provided with the protrusion 101. It will be appreciated that the width of the guide groove 11 is measured as the width of the guide groove 11 at the location not provided with the protrusion 101. The width of the guide groove 11 at the location not provided with the protrusion 101 is preferably uniform.

[0048] Likewise, the local width of the solder top bar 30 at the location provided with the recess 301 is measured as the minimum width of the solder top bar 30 at the location provided with the recess 301. It will be appreciated that the width of the solder top bar 30 is measured as the width of the solder top bar 30 at the location not provided with the recess 301. The width of the solder top bar 30 at the location not provided with the recess 301 is preferably uniform.

[0049] Preferably, the protrusion 101 and the recess 301 are dimensioned such that the gap width between the side wall of the guide groove 11 and the side wall 30a of the solder top bar 30 is uniform at the location provided with the protrusion 101 and the recess 301.

[0050] In particular, in the exemplary embodiment, the recess 301 is shaped as a circular-arc shaped recess and the protrusion 101 is shaped as a circular-arc shaped protrusion. The recess 301 and the protrusion 101 can each be arranged uniformly spaced apart from each other. The recess 301 can have a radius of 1.45 mm and the protrusion 101 can have a radius of 1.35 mm. When the solder top bar 30 is precisely centered in the guide groove 11, i.e. the longitudinal symmetry axis of the solder top bar 30 coincides with the longitudinal symmetry axis of the guide groove 11, the profiles of the recess 301 and the protrusion 101 form concentric circles. Thus the 0.1 mm radius difference thereof forms a uniform 0.2 mm gap width at the location of the recess 301-protrusion 101.

[0051] In some embodiments, the solder top bar 30 is provided with a fluorine cloth (not shown) at the upper surface 33 for contacting the solder ribbon. The thickness of the fluorine cloth is in the range of 0.1-0.3 mm, such as can be 0.1 mm, 0.2 mm or 0.3 mm, etc. The fluorine cloth can be pasted on the upper surface 33 of the solder top bar 30. And / or, the ends of the fluorine cloth are fixed on the solder top bar 30 by a press block and a fastener, which are pressed on the upper surface 33 via the press blocks arranged at both ends of the solder top bar 30 or the upper surface 33 thereof, and the press blocks can be fastened on the solder top bar 30 via screws. The fluorine cloth can make the cooling effect better when the back is blown, accelerate the solidification of the tin beads, and also has the characteristics of anti-tin sticking and anti-wear, etc. In addition, the fluorine cloth material is softer, so that the solder ribbon is tightly attached to the battery piece and is not easy to crack, avoiding the risk of cracking.

[0052] Another aspect of the present disclosure provides a stringer welding machine comprising any of the foregoing welding ribbon positioning modules. Other parts of the structure of the stringer welding machine are in the prior art and are not described in detail here.

[0053] In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0054] In addition, the technical features involved in the different embodiments of the present disclosure described below can be combined with each other as long as there is no conflict.

[0055] The singular forms "a", "an" and "the" used in the present disclosure and the appended claims are intended to include plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0056] Obviously, those skilled in the art can make various modifications and variations to the welding ribbon positioning module and the stringer welding machine disclosed in the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure also intends to include these modifications and variations.

Claims

1. A solder strip positioning module, wherein, The welding top strip positioning module comprises a module guide fixing block (10), a welding top strip mounting block (20) and a welding top strip (30); The module guide fixing block (10) is movably connected with the welding top strip mounting block (20), a guide groove (11) is formed in the module guide fixing block (10) and the welding top strip (30) is accommodated in the guide groove (11), the welding top strip (30) is connected to the welding top strip mounting block (20) and is movable up and down in the guide groove (11), and the width of the guide groove (11) is greater than the width of the welding top strip (30). The welding top strip (30) is used for extruding the solder strip, and the welding top strip (30) penetrates through the guide groove (11).

2. The solder strip positioning module of claim 1, wherein, A plurality of protrusions (101) are arranged in the side wall of the guide groove (11), and a plurality of grooves (301) are correspondingly arranged in the side wall of the welding top strip (30), and the protrusions (101) are respectively accommodated in the grooves (301).

3. The solder strip positioning module of claim 2, wherein, A plurality of protrusions (101) are arranged in the side wall of the guide groove (11), and a plurality of grooves (301) are correspondingly arranged in the side wall of the welding top strip (30), and the protrusions (101) are respectively accommodated in the grooves (301).

4. The solder strip positioning module of claim 2, wherein, The width of the guide groove (11) without the protrusions is 1-5 mm, and the width of the guide groove (11) with the protrusions is 0.6-2 mm. The width of the welding top strip (30) without the grooves (301) is 0.8-4.8 mm, and the width of the welding top strip (30) with the grooves (301) is 0.4-1.8 mm.

5. The solder strip positioning module of claim 2, wherein, The sizes of the protrusions (101) and the grooves (301) are configured such that the gap width between the side wall of the guide groove (11) and the side wall of the welding top strip (30) is narrowed at the positions where the protrusions (101) and the grooves (301) are arranged.

6. The solder strip positioning module of claim 5, wherein, A plurality of connecting pins (12) are arranged below the module guide fixing block (10), a plurality of first connecting holes (22) are arranged on the welding top strip mounting block (20), and the connecting pins (12) are slidably inserted into the first connecting holes (22).

7. The solder strip positioning module of claim 3, wherein, The shape of the groove (301) is a circular arc groove, and the shape of the protrusion (101) is a circular arc protrusion.

8. The solder strip positioning module of claim 1, wherein, The welding top strip (30) is provided with a tetrafluoro cloth on the upper surface (31) for contacting the solder strip.

9. The solder strip positioning module of claim 8, wherein, The tetrafluoro cloth is pasted on the welding top strip (30); And / or, the end of the tetrafluoro cloth is fixed on the welding top strip (30) by a pressing block and a fastener; and / or The thickness of the tetrafluoro cloth is in the range of 0.1-0.3 mm.

10. A stringer, wherein, The welding strip positioning module comprises the welding strip positioning module according to any one of the preceding claims 1-9.

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