Solar cell welding supporting tool and series welding equipment

Abstract

The utility model relates to a solar cell welding supporting tool and series welding equipment. The solar battery welding supporting tool comprises a bottom plate, a magnetic part and a cover plate, the bottom plate is provided with a supporting table used for supporting a battery piece, and a containing groove is further formed in the position, beside the supporting table, of the bottom plate. The magnetic piece is arranged in the containing groove and used for adsorbing the pressing net. And the cover plate is fixed on the bottom plate and is in limiting fit with the magnetic piece, so that the magnetic piece is limited in the accommodating groove. According to the solar cell welding supporting tool, the problem that the magnetic part tilts due to the fact that mucilage glue fails is solved, and then the power, the appearance and the reliability of a photovoltaic module finished product are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of solar cell technology, and in particular to solar cell welding support tooling and string welding equipment. Background Art

[0002] In the photovoltaic industry, single-cell batteries cannot be used directly as power sources due to their fragility and poor aging resistance. Multiple cells need to be connected in series and parallel using welding ribbons to form a battery string, which then needs to be laid out, stacked, and packaged to form a photovoltaic module before it can be used for a long time.

[0003] In the string soldering process, glue is first applied to the front and back of the cell. The solder ribbon is then pulled onto the cell surface in a preset arrangement, allowing the ribbon to contact the glue on the cell surface. A press screen is then placed over the cell, allowing the press pins to press against the ribbon to prevent displacement. A base plate with embedded magnets is placed at the bottom of the cell, allowing the magnets to attract the press screen, resulting in a certain amount of compression on the press pins. This increases the press screen's tightness while preventing it from shifting as the conveyor belt moves. Finally, the glue on the cell surface is cured at high temperature to secure the solder ribbon to the cell and form an electrical connection.

[0004] However, in the related art, after the battery strings undergo the string welding process, there will still be problems with the local welding ribbons of the battery cells in batches being offset or bent, which affects the power, appearance and reliability of the finished photovoltaic module. Utility Model Content

[0005] Based on this, it is necessary to provide a solar cell welding support tooling and string welding equipment to avoid the problem of offset and bending of the welding ribbon during string welding.

[0006] In one aspect, the present application provides a solar cell welding support tool, comprising:

[0007] A bottom plate, wherein the bottom plate is provided with a support platform for supporting the battery cells, and the bottom plate is further provided with a receiving groove beside the support platform;

[0008] a magnetic member, the magnetic member being disposed in the receiving groove; and

[0009] A cover plate is fixed to the bottom plate and cooperates with the magnetic member to limit the magnetic member in the receiving groove.

[0010] The technical solution is further described below:

[0011] In one embodiment, the bottom plate is provided with two receiving grooves, and the two receiving grooves are respectively located on both sides of the support platform, and each receiving groove is provided with the magnetic member and the cover plate.

[0012] In one embodiment, the accommodating groove includes a first groove body and a second groove body, the second groove body is opened on the bottom wall of the first groove body, at least part of the magnetic part is embedded in the second groove body, the cover plate is arranged in the first groove body, and the surface of the cover plate is arranged flush with the surface of the support platform.

[0013] In one embodiment, the cover plate spans over the second slot and covers the magnetic member.

[0014] In one embodiment, a third slot is formed on a side of the cover plate close to the magnetic component, a portion of the magnetic component is embedded in the second slot, and a portion of the magnetic component protruding from the second slot is embedded in the third slot.

[0015] In one embodiment, the magnetic part includes a main body and a boss portion protruding from the main body, at least a portion of the main body is arranged in the second groove body, the boss portion protrudes in a direction away from the second groove body, and a step portion is formed between the boss portion and the main body, and the cover plate includes a main body and a limiting portion protruding from the main body, the main body is arranged on the side of the main body, and the limiting portion extends toward the boss portion and abuts against the step portion.

[0016] In one embodiment, the step portions are formed on both sides of the boss portion, two cover plates are provided, and the two cover plates are respectively provided on both sides of the magnetic component, and the limiting portions of the two cover plates correspond one to one to abut against the two step portions.

[0017] In one embodiment, the surface of the boss portion facing away from the main body portion, the surface of the cover plate and the surface of the support platform are arranged flush.

[0018] In one embodiment, the cover plate is provided with a through hole, the bottom plate is provided with a threaded hole, and the solar cell welding support fixture further includes a threaded connector, which is passed through the through hole and threadably engaged with the threaded hole.

[0019] On the other hand, the present application also provides a string welding device, including the above-mentioned solar cell welding support tooling and pressing net, the pressing net is arranged opposite to the solar cell welding support tooling, the pressing net is used to cover the battery cell, and the magnetic part is used to adsorb the frame of the pressing net.

[0020] In the above-mentioned solar cell welding support tooling, the base plate supports the solar cell through the support platform, and at the same time, a receiving groove is provided on the side of the support platform, and a magnetic part is provided in the receiving groove. By using the magnetic part to absorb the frame of the pressing net covering the solar cell, a downward force can be applied to the pressing net from the edge of the pressing net, ensuring that the pressing pins in each area of the pressing net can be evenly compressed to press all the welding strips on the solar cell. At the same time, by providing a fixed cover plate on the base plate, the cover plate and the magnetic part are limited and matched, so that the magnetic part can be firmly limited in the receiving groove. Compared with the traditional method of using glue, the solar cell welding support tooling of the present application uses a fixed cover plate to limit the magnetic part. After the base plate is baked at high temperature, the cover plate can still stably limit the magnetic part, avoiding the problem of the magnetic part tilting due to the failure of the glue, thereby ensuring the power, appearance and reliability of the finished photovoltaic module. In addition, the use of the cover plate to fix the magnetic part also eliminates the process of manual gluing and there is no need to wait for the glue to solidify, which improves production efficiency and reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings that constitute a part of this application are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0022] 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. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only for illustrative purposes and are not necessarily drawn to true scale.

[0024] Figure 1 The figure is a schematic structural diagram of a solar cell welding support tooling according to one embodiment.

[0025] Figure 2 Schematic diagram of the structure of a base plate according to an embodiment.

[0026] Figure 3 for Figure 1 A top view of the solar cell welding support fixture shown in FIG.

[0027] Figure 4 for Figure 1 A front view of the solar cell welding support fixture shown in FIG.

[0028] Figure 5 for Figure 4A partial enlarged view of part A of the solar cell welding support fixture shown in FIG.

[0029] Figure 6 for Figure 4 A partial enlarged view of part B of the solar cell welding support fixture shown in FIG.

[0030] Description of reference numerals:

[0031] 10. Bottom plate; 11. Support platform; 12. Accommodating groove; 121. First groove body; 122. Second groove body; 20. Magnetic member; 21. Main body; 22. Boss portion; 23. Step portion; 30. Cover plate; 31. Third groove body; 32. Main body; 33. Limiting portion; 34. Through hole. DETAILED DESCRIPTION

[0032] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that if 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", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0034] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0035] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0036] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, 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 embodiment.

[0038] As mentioned above, at present, after the battery strings have gone through the string welding process, there will still be problems with the deviation and bending of the local welding strips in batches, which affects the power, appearance and reliability of the finished photovoltaic modules. After a lot of research, the inventors found that the reason is that in the traditional battery cell supporting base plate, the magnets are bonded to the grooves of the base plate by adhesive. When the base plate is baked at high temperature for a long time, the adhesive fails, which will cause the magnets to warp. The warping of the magnet will lift up the pressure net, causing some of the pressure pins on the pressure net to be unable to press the welding strips, which will cause the local welding strips on the battery cell to deviate and bend. In addition, at present, most of the installation methods of magnets are through manual gluing and fixing, which not only has low production efficiency, but also it is difficult to control the uniformity of the glue distribution during the use of adhesive to bond the magnets, which will affect the stability of the magnets and it is also difficult to control the flatness of the magnets. At the same time, the use of adhesive method also requires waiting for the glue to solidify, resulting in the base plate not being able to be put into use immediately, affecting production efficiency.

[0039] Based on this, an embodiment of the present application provides a solar cell welding support tool for supporting the cell during the string welding process and cooperating with the pressing net to press the solder strip on the surface of the cell. Figure 1 The solar cell welding support tool of one embodiment includes a base plate 10, a magnetic member 20 and a cover plate 30. Figure 2 The base plate 10 is provided with a support platform 11 for supporting the battery cells. A receiving groove 12 is also provided on the side of the support platform 11. A magnetic member 20 is disposed in the receiving groove 12 and is used to attract a press screen (not shown). A cover plate 30 is fixed to the base plate 10 and cooperates with the magnetic member 20 to retain the magnetic member 20 in the receiving groove 12.

[0040] In the above-mentioned solar cell welding support tooling, the base plate 10 supports the cell through the support platform 11, and at the same time, a receiving groove 12 is provided on the side of the support platform 11, and a magnetic part 20 is provided in the receiving groove 12. By using the magnetic part 20 to absorb the frame of the pressing net covering the cell, a downward force can be applied to the pressing net from the edge of the pressing net, ensuring that the pressing pins in each area of the pressing net can be evenly compressed to press all the welding strips on the cell. At the same time, by providing a fixed cover plate 30 on the base plate 10, the cover plate 30 and the magnetic part 20 are limited and matched, so that the magnetic part 20 can be firmly limited in the receiving groove 12. Compared with the traditional method of using glue, the solar cell welding support tooling of the present application uses a fixed cover plate 30 to limit the magnetic part 20. After the base plate 10 is baked at high temperature, the cover plate 30 can still stably limit the magnetic part 20, avoiding the problem of the magnetic part 20 tilting due to the failure of the adhesive, thereby ensuring the power, appearance and reliability of the finished photovoltaic module. In addition, the use of the cover plate 30 to fix the magnetic member 20 also eliminates the process of manually applying glue and the need to wait for the glue to solidify, thereby improving production efficiency and reducing labor costs.

[0041] See also Figure 3 Optionally, in one embodiment, the base plate 10 is provided with two receiving slots 12, one located on either side of the support platform 11. Each receiving slot 12 is provided with a magnetic member 20 and a cover plate 30. Thus, the two magnetic members 20 can respectively attract the two side frames of the press screen, making the downward pressure of the press screen more uniform, thereby making the compression of all the pressing pins on the press screen more uniform, further improving the pressing effect of the press screen on the welding strip, and at the same time improving the stability of the press screen when it moves with the conveyor belt.

[0042] Optionally, in one embodiment, each receiving slot 12 extends along the length of the base plate 10, and each receiving slot 12 is provided with a plurality of magnetic members 20, each magnetic member 20 being arranged in sequence along the length of the base plate 10, and the cover plate 30 is positionally engaged with all the magnetic members 20 in the receiving slot 12. For example, the magnetic member 20 may be a permanent magnet.

[0043] See also Figure 2 Optionally, the receiving groove 12 includes a first groove body 121 and a second groove body 122, and the second groove body 122 is opened on the bottom wall of the first groove body 121, that is, the cross section of the receiving groove 12 is T-shaped as a whole. Figure 4 At least a portion of the magnetic member 20 is embedded in the second slot 122, and the cover plate 30 is disposed in the first slot 121, with the surface of the cover plate 30 flush with the surface of the support platform 11. By embedding the magnetic member 20 in the second slot 122 and the cover plate 30 in the first slot 121, the installation stability of the magnetic member 20 and the cover plate 30 is improved, while also ensuring that the surface of the cover plate 30 is flush with the surface of the support platform 11, thus avoiding the problem of the cover plate 30 protruding and causing it to lift up and press the screen.

[0044] See also Figure 5 In one embodiment, the cover plate 30 spans the second slot body 122 and covers the magnetic component 20, that is, the magnetic component 20 is located as a whole below the cover plate 30. The cover plate 30 presses the magnetic component 20 into the receiving slot 12, thereby achieving a hard limit on the magnetic component 20 and preventing the magnetic component 20 from warping.

[0045] Further, see Figure 5 In one embodiment, a third groove 31 is formed on the side of the cover plate 30 near the magnetic member 20. The portion of the magnetic member 20 is embedded in the second groove 122, and the portion of the magnetic member 20 protruding from the second groove 122 is embedded in the third groove 31. This further improves the connection stability between the cover plate 30 and the magnetic member 20. It also reduces the thickness of the cover plate 30 at the location corresponding to the magnetic member 20, preventing the cover plate 30 from affecting the magnetic attraction of the magnetic member 20 to the screen.

[0046] Continue to see Figure 3 In this embodiment, through holes 34 are formed on both sides of the cover plate 30, and corresponding threaded holes are formed on the bottom wall of the first trough 121 of the base plate 10. The battery cell welding fixture also includes threaded connectors that pass through the through holes 34 and engage with the threaded holes. This ensures that the cover plate 30 is stably fixed in the first trough 121 and also facilitates removal of the cover plate 30 for subsequent replacement of the magnetic member 20. For example, the threaded connectors can be screws.

[0047] See also Figure 6Optionally, in another embodiment, the magnetic member 20 includes a main body portion 21 and a boss portion 22 protruding from the main body portion 21, at least a portion of the main body portion 21 is arranged in the second groove body 122, the boss portion 22 protrudes in a direction away from the second groove body 122, and a step portion 23 is formed between the boss portion 22 and the main body portion 21. Exemplarily, the width of the boss portion 22 is smaller than the width of the main body portion 21, so that a step portion 23 is formed between the boss portion 22 and the main body portion 21. Furthermore, the cover plate 30 includes a main body portion 32 and a limiting portion 33 protruding from the main body portion 32. The main body portion 32 is arranged on the side of the main body portion 21. The limiting portion 33 extends toward the direction close to the boss portion 22 and abuts against the step portion 23, thereby realizing the hard limiting of the magnetic part 20 by the cover plate 30 to prevent the magnetic part 20 from tilting. At the same time, since the cover plate 30 does not cover the magnetic part 20, it can avoid the cover plate 30 affecting the magnetic attraction force of the magnetic part 20, thereby improving the adsorption effect of the magnetic part 20 on the pressing net.

[0048] Furthermore, steps 23 are formed on both sides of the boss portion 22, giving the magnetic member 20 a "convex"-shaped structure. Two cover plates 30 are provided, one on each side of the magnetic member 20, and the limiting portions 33 of the two cover plates 30 abut against the two steps 23 in a one-to-one correspondence. In this way, the two cover plates 30 can limit the magnetic member 20 from both sides, further improving the stability of the magnetic member 20.

[0049] Furthermore, the surface of the boss portion 22 facing away from the main body portion 21 and the surface of the cover plate 30 are flush with the surface of the support platform 11 , thereby preventing the cover plate 30 or the magnetic member 20 from protruding and lifting the pressure mesh.

[0050] Continue to see Figure 3 In this embodiment, each cover plate 30 is provided with a through-hole 34. The bottom wall of the first trough 121 of the base plate 10 is provided with a corresponding threaded hole (not shown). The solar cell welding support fixture also includes a threaded connector (not shown) that passes through the through-hole 34 and engages with the threaded hole. This ensures that the cover plate 30 is stably fixed in the first trough 121 and also facilitates removal of the cover plate 30 for subsequent replacement of the magnetic member 20. For example, the threaded connector can be a screw.

[0051] One embodiment of the present application also provides a string welding device, which includes the solar cell welding support tooling and the pressing net of any of the above-mentioned embodiments. The pressing net is arranged opposite to the solar cell welding support tooling. The pressing net is used to cover the battery cell, and the magnetic part 20 is used to adsorb the frame of the pressing net so that the pressing net can press all the welding strips on the battery cell.

[0052] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0053] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A solar cell welding support tool, characterized in that: include: A bottom plate (10), the bottom plate (10) being provided with a support platform (11) for supporting the battery cell, and the bottom plate (10) being further provided with a receiving groove (12) on the side of the support platform (11); a magnetic member (20), the magnetic member (20) being arranged in the receiving groove (12); and A cover plate (30) is fixed on the base plate (10) and cooperates with the magnetic member (20) to limit the magnetic member (20) in the receiving groove (12).

2. The solar cell welding support tool according to claim 1, characterized in that: The bottom plate (10) is provided with two receiving grooves (12), the two receiving grooves (12) are respectively located on both sides of the support platform (11), and each receiving groove (12) is provided with the magnetic member (20) and the cover plate (30).

3. The solar cell welding support tool according to claim 1, characterized in that: The accommodating groove (12) comprises a first groove body (121) and a second groove body (122), wherein the second groove body (122) is provided on the bottom wall of the first groove body (121), and at least a portion of the magnetic member (20) is embedded in the second groove body (122). The cover plate (30) is arranged in the first groove body (121), and the surface of the cover plate (30) is arranged flush with the surface of the support platform (11).

4. The solar cell welding support tool according to claim 3, characterized in that: The cover plate (30) spans the second slot body (122) and covers the magnetic component (20).

5. The solar cell welding support tool according to claim 4, characterized in that: A third slot (31) is provided on a side of the cover plate (30) close to the magnetic member (20), a portion of the magnetic member (20) is embedded in the second slot (122), and a portion of the magnetic member (20) protruding from the second slot (122) is embedded in the third slot (31).

6. The solar cell welding support tool according to claim 3, characterized in that: The magnetic member (20) includes a main body (21) and a boss portion (22) protruding from the main body (21), at least a portion of the main body (21) is arranged in the second groove (122), the boss portion (22) protrudes in a direction away from the second groove (122), and a step portion (23) is formed between the boss portion (22) and the main body (21), and the cover plate (30) includes a main body (32) and a limiting portion (33) protruding from the main body (32), the main body (32) is arranged on the side of the main body (21), and the limiting portion (33) extends in a direction close to the boss portion (22) and abuts against the step portion (23).

7. The solar cell welding support tool according to claim 6, characterized in that: The step portions (23) are formed on both sides of the boss portion (22), two cover plates (30) are provided, and the two cover plates (30) are respectively provided on both sides of the magnetic member (20), and the limiting portions (33) of the two cover plates (30) are in one-to-one contact with the two step portions (23).

8. The solar cell welding support tool according to claim 6, characterized in that: The surface of the boss portion (22) facing away from the main body portion (21), the surface of the cover plate (30) and the surface of the support platform (11) are arranged flush.

9. The solar cell welding support tool according to claim 1, characterized in that: The cover plate (30) is provided with a through hole (34), the bottom plate (10) is provided with a threaded hole, and the solar cell welding support fixture further comprises a threaded connector, which is passed through the through hole (34) and threadably engaged with the threaded hole.

10. A string welding device, characterized in that, The solar cell welding support tool and the pressing net according to any one of claims 1 to 9 are provided, wherein the pressing net is arranged opposite to the solar cell welding support tool, the pressing net is used to cover the cell sheet, and the magnetic part (20) is used to absorb the frame of the pressing net.

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