Pad component and welding device
By setting multiple solder pad mechanisms and limiting grooves in the solder pad component, combined with a solder wire winding adjuster, the problems of solder wire alignment deviation and torsion in stacked grid cells are solved, achieving efficient welding and high yield.
Patent Information
- Application Number
- CN202422979461.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-03
AI Technical Summary
In stacked grid cells, the use of extremely fine triangular conductive wires can cause misalignment and twisting between the conductive wires and the seed layer, affecting welding efficiency and yield.
Design a pad component including a support body and multiple circumferentially arranged pad mechanisms. Each pad has a limiting groove for fixing the welding wire, and multiple pads are arranged on the support body to achieve accurate positioning and welding of the welding wire. Combined with a welding wire winding adjuster and a guide tensioner, the stable transmission of the welding wire is ensured.
It improves welding efficiency and yield, avoids wire flipping, ensures accurate alignment between the welding wire and the seed layer of the battery cell, and enhances welding quality.
Smart Images
Figure CN223652631U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of welding technology, and in particular to a solder pad component and a welding apparatus. Background Technology
[0002] Stacked-grid solar cells are a type of semiconductor metallization technology and cell stringing technology. They involve creating a conductive seed layer on the cell surface to collect surface current. Above this seed layer, extremely fine triangular conductive filaments with ultra-high surface reflectivity are placed. The conductive seed layer and the conductive filaments are connected by a conductive bonding material to form a conductive circuit. Modules made using stacked-grid solar cells not only have high front-side power but also high combined power on both sides, aesthetic appeal, strong resistance to microcracks, and low hot spot risk, among other advantages. However, because stacked-grid solar cells use extremely fine triangular conductive filaments in far greater numbers than the current SMBB (Super Multi-Busbar) main grids, misalignment between the conductive filaments and the seed layer is prone to occur. Furthermore, the cross-section of the conductive filaments is mostly triangular, which can lead to twisting during alignment, affecting welding efficiency and yield. Utility Model Content
[0003] Based on this, one embodiment of this application provides a welding pad component and a welding device that offer accurate wire alignment and high welding efficiency.
[0004] In a first aspect, this application provides a pad component, the pad component comprising:
[0005] Support structure;
[0006] A pad mechanism, wherein multiple pad mechanisms are arranged circumferentially along the support body, the pad mechanism includes multiple pads arranged axially along the support body, and multiple limiting grooves for limiting the welding wire are arranged side by side on the pads, the limiting grooves penetrate the pads circumferentially along the support body, and the limiting grooves are used to limit the welding wire.
[0007] In some embodiments, the cross-sectional shape of the limiting groove in the direction perpendicular to the pad is the same as the cross-sectional shape of the welding wire.
[0008] In some embodiments, the cross-sectional shape of the limiting groove is triangular.
[0009] In some embodiments, the pads are further provided with multiple adsorption grooves for adsorbing and fixing the battery cells.
[0010] In some embodiments, the pad mechanism further includes a heater disposed on the pad for heating the pad.
[0011] In some embodiments, the pad mechanism further includes a fixing member disposed on a limiting groove on the pad near the edge of the support, the fixing member being used to fix the end of the welding wire.
[0012] In a second aspect, this application provides a welding apparatus, which includes a support, a feeder, a welder, and a welding pad component as described in the first aspect;
[0013] The support body in the solder pad component is rotatably mounted on the bracket;
[0014] The feeder is mounted on the bracket and is used to place battery cells onto the pads in the pad component.
[0015] The welder is mounted on the support and is used to weld the battery cells placed on the welding pad.
[0016] In some embodiments, the welding apparatus further includes a wire winding adjuster disposed on the support, the wire winding adjuster being used to wind the welding wire into the limiting groove in the welding pad.
[0017] In some embodiments, the welding wire winding adjuster is provided with a guide and a tensioner, the guide and the tensioner being disposed opposite to each other, the guide being used to hold the welding wire, and the tensioner being used to tension the welding wire for stable transmission.
[0018] In some embodiments, the welding wire winding adjuster is further provided with a first guide rail and a second guide rail. The guide member is slidably disposed on the first guide rail, and the tensioning member is slidably disposed on the second guide rail. The sliding of the guide member along the first guide rail and the sliding of the tensioning member along the second guide rail are used to adjust the winding position of the welding wire on the welding pad.
[0019] Compared with traditional technologies, this application has at least the following beneficial effects:
[0020] In this application, multiple solder pad mechanisms are arranged in the circumferential direction of the support body. Each solder pad mechanism can correspond to a welding station. The solder pads can be loaded and the battery cells can be welded as the support body rotates. In addition, multiple solder pads are arranged on the solder pad mechanism, and a limiting groove for placing the welding wire is opened on the solder pad. This not only prevents the welding wire from flipping, but also ensures that the arrangement of the welding wire corresponds to the arrangement of the seed layer on the battery cell, effectively improving welding efficiency and yield. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of a pad component provided in one embodiment of this application;
[0022] Figure 2This is a partial enlarged view of a pad provided in one embodiment of this application;
[0023] Figure 3 This is a partial enlarged view of a pad component provided in one embodiment of this application;
[0024] Figure 4 This is a schematic diagram of the structure of a welding apparatus provided in one embodiment of this application;
[0025] Figure 5 This is a schematic diagram of the winding state of a welding wire winding adjuster and a welding component provided in one embodiment of this application;
[0026] Figure 6 This is a schematic diagram of the structure of a wire winding adjuster provided in one embodiment of this application.
[0027] Among them, 100-pad component; 110-support body; 120-pad mechanism; 121-pad; 122-limiting groove; 123-adsorption groove; 124-heater; 125-fixed component; 126-rotating shaft; 200-bracket; 210-bearing seat; 300-feeder; 310-positioner; 320-transferrer; 400-welder; 500-welding wire winding adjuster; 510-guide component; 520-tensioning component; 530-first guide rail; 540-second guide rail. Detailed Implementation
[0028] The present application will be further described in detail below with reference to the accompanying drawings, embodiments, and examples. These embodiments and examples are for illustrative purposes only and are not intended to limit the scope of the present application. The purpose of providing these embodiments and examples is to enable a more thorough and comprehensive understanding of the disclosure of the present application. It should also be understood that the present application can be implemented in many different forms and is not limited to the embodiments and examples described herein. Those skilled in the art can make various modifications or alterations without departing from the spirit of the present application, and the equivalent forms obtained also fall within the protection scope of the present application. Furthermore, numerous specific details are set forth in the following description to provide a fuller understanding of the present application. It should be understood that the present application can be implemented without one or more of these details.
[0029] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.
[0030] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "fixed," and "set" 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. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.
[0031] In this application, "optionally," "optionally," and "optional" mean that something is optional, that is, it means that it is selected from either "with" or "without." If there are multiple "optional" entries in a technical solution, unless otherwise specified, and there are no contradictions or mutual constraints, each "optional" entry shall be independent.
[0032] In this application, the technical features described in an open-ended manner include both closed technical solutions consisting of the listed features and open technical solutions that include the listed features.
[0033] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or quantity, nor should they be construed as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first," "second," etc., serve only as a non-exhaustive enumeration and should be understood not to constitute a closed limitation on quantity.
[0034] All references to this application are incorporated herein by reference as if each document were individually incorporated herein by reference. Unless they conflict with the purpose and / or technical solution of this application, all cited references are incorporated herein by reference in their entirety and for all purposes. When references are cited in this application, the definitions of relevant technical features, terms, nouns, phrases, etc., are also incorporated herein by reference. Examples and preferred embodiments of the cited technical features may also be incorporated herein by reference, but only to the extent that they enable the implementation of this application. It should be understood that when the cited content conflicts with the description in this application, this application shall prevail or modifications shall be made adaptably to the description in this application.
[0035] In traditional technology, the solar cell is placed on the pad and welded to the welding wire. Since multiple triangular welding wires are used in the gridded solar cell and need to be aligned with the seed layer on the solar cell, the alignment efficiency is low. Moreover, the triangular welding wires are prone to flipping, resulting in poor welding effect between the welding wire and the solar cell, which in turn affects the photoelectric conversion efficiency of the gridded solar cell.
[0036] Based on this, the first aspect of this application provides a pad component 100, such as... Figure 1As shown, the pad component 100 includes a support body 110 and a pad mechanism 120. Multiple pad mechanisms 120 are arranged circumferentially along the support body 110, and each pad mechanism 120 includes multiple pads 121 arranged axially along the support body 110, such as... Figure 2 As shown, multiple limiting grooves 122 for limiting the welding wire are arranged side by side on the pad 121, and the limiting grooves 122 penetrate the pad 121 along the circumference of the support body 110.
[0037] In this application, multiple solder pad mechanisms 120 are arranged in the circumferential direction of the support body 110. Each solder pad mechanism 120 can correspond to a welding station. As the support body 110 rotates, the solder pads 121 can be loaded and the battery cells can be welded. In addition, multiple solder pads 121 are arranged on the solder pad mechanism 120, and a limiting groove 122 for placing the welding wire is opened on the solder pad 121. This not only prevents the welding wire from flipping, but also ensures that the arrangement of the welding wire corresponds to the arrangement of the seed layer on the battery cell, effectively improving the welding efficiency and yield.
[0038] It is understood that the number of pad mechanisms 120 in this application can be adjusted according to the number of battery cells in the battery string. For example, if the battery string includes 12 battery cells connected in series with welding wire, then 12 pad mechanisms 120 can be arranged circumferentially on the support 110, so that the welding of the battery string can be completed by rotating the pad component 100 once.
[0039] It should be noted that this application does not impose specific requirements or special limitations on the number of pads 121 in the pad mechanism 120. The more pads 121 there are, the more battery strings can be processed at the same time. Those skilled in the art can select them reasonably according to the welding requirements.
[0040] In some embodiments, the support 110 may be a cylindrical support 110.
[0041] In some embodiments, the cross-sectional shape of the limiting groove 122 in the direction perpendicular to the solder pad 121 is the same as the cross-sectional shape of the welding wire. This application sets the cross-sectional shape of the limiting groove 122 to be the same as the cross-sectional shape of the welding wire to ensure the welding wire is fixed in the limiting groove 122, avoid problems such as twisting of the welding wire, and ensure the limiting stability of the welding wire.
[0042] In some embodiments, such as Figure 2 As shown, the cross-sectional shape of the limiting groove 122 is triangular.
[0043] In some embodiments, such as Figure 3 As shown, the pad 121 is also provided with a plurality of adsorption grooves 123 for adsorbing and fixing the battery cells. Optionally, the adsorption grooves 123 are provided at the edge of the pad 121. It can be understood that the adsorption grooves 123 can be connected to a negative pressure device to provide adsorption force to the adsorption grooves 123.
[0044] In this application, the battery cell is fixed by the adsorption groove 123 to ensure accurate alignment between the battery cell and the welding wire during the welding process and to prevent the battery cell from shifting during the welding process.
[0045] In some embodiments, such as Figure 3 As shown, the pad mechanism 120 also includes a heater 124 disposed on the pad 121, which is used to heat the pad 121. Optionally, the heater 124 is disposed on the side of the pad 121 near the support 110. The heater 124 disposed on the pad 121 in this application can preheat the pad 121, maintain the temperature of the pad 121, avoid cold solder joints, reduce soldering time, improve efficiency, and reduce energy consumption.
[0046] In some embodiments, such as Figure 2 As shown, the solder pad mechanism 120 also includes a fixing member 125, which is disposed on the limiting groove 122 on the solder pad 121 near the edge of the support body 110. The fixing member 125 is used to fix the end of the solder wire. Optionally, the fixing member 125 can be a latch disposed on the solder pad 121. In this application, the fixing member 125 is used to fix one end of the solder wire to ensure the stability of the winding.
[0047] The second aspect of this application provides a welding apparatus, such as... Figure 4 As shown, the welding apparatus includes a support 200, a feeder 300, a welder 400, and a pad component 100 as described in the first aspect.
[0048] In this component, the support 110 of the pad assembly 100 is rotatably mounted on the bracket 200. The feeder 300 is mounted on the bracket 200 and is used to place battery cells onto the pads 121 in the pad assembly 100. The welder 400 is mounted on the bracket 200 and is used to weld the battery cells placed on the pads 121.
[0049] The welding apparatus of this application employs the aforementioned solder pad component 100, which is rotatably mounted on the support 200. The feeder 300 then feeds the solder pad mechanism 120. After the battery cell is placed on the solder pad 121, the support body 110 is rotated, thereby rotating the solder pad 121 with the battery cell to the welding position. The welding device 400 then performs welding between the welding wire wound on the solder pad component 100 and the battery cell. The welding apparatus of this application features high welding efficiency and high yield.
[0050] It is understandable that the rotational connection method between the support body 110 and the bracket 200 can be reasonably selected according to actual needs. For example, a rotating shaft 126 can be provided on the support body 110, and a bearing seat 210 and a driving component can be provided on the bracket 200. The support body 110 is rotatably mounted on the bearing seat 210 via the rotating shaft 126 and rotates under the drive of the driving component.
[0051] In some embodiments, such as Figure 5 As shown, the welding device also includes a welding wire winding adjuster 500 disposed on the bracket 200, which is used to wind the welding wire into the limiting groove 122 in the welding pad 121.
[0052] In some embodiments, such as Figure 5 As shown, the welding wire winding adjuster 500 is equipped with a guide 510 and a tensioner 520, which are arranged opposite to each other. The guide 510 is used to maintain stable welding wire transmission, and the tensioner 520 is used to tension the welding wire. This application utilizes the cooperation of the tensioner 520 and the guide 510 to maintain the transmission state of the welding wire during the welding wire winding process, avoiding welding wire twisting and loosening, which would affect the winding efficiency.
[0053] Optionally, the guide 510 includes a guide block with a limiting hole. The cross-sectional shape of the limiting hole is the same as that of the welding wire, ensuring that the welding wire can be wound into the limiting groove 122 in a preset state.
[0054] Optionally, the tensioning member 520 is provided with a wire threading groove and an adjusting weight. The wire threading groove is used to thread the welding wire, and the adjusting weight is used to adjust the tension of the welding wire.
[0055] In some embodiments, such as Figure 6 As shown, the welding wire winding adjuster 500 is also provided with a first guide rail 530 and a second guide rail 540. The guide member 510 is slidably disposed on the first guide rail 530, and the tensioning member 520 is slidably disposed on the second guide rail 540. The guide member 510 slides along the first guide rail 530 and the tensioning member 520 slides along the second guide rail 540 to adjust the winding position of the welding wire on the welding pad 121.
[0056] This application utilizes a first guide rail 530 to achieve the sliding setting of the guide member 510 and a second guide rail 540 to achieve the sliding setting of the tension member 520. During the winding process, the positions of the guide member 510 and the tension member 520 can be adjusted to wind the welding wire into different limiting grooves 122 of the welding pad 121, ensuring the accuracy of the welding wire winding position.
[0057] In some embodiments, the feeder 300 is provided with a positioner 310 and a transferor 320. The positioner 310 is used to position the battery cell to be welded, and the transferor 320 is used to transfer the positioned battery cell onto the pad 121 of the pad component 100. The positioner 310 and the transferor 320 are used to align the welding wire on the pad 121 with the seed layer on the battery cell. It is understood that the distance between the upper limit grooves 122 of the pad 121 can be determined according to the welding requirements of the battery cell. Therefore, during the alignment and welding process of the battery cell and the welding wire, detecting the distance between the edge of the battery cell and the pad 121 can ensure accurate alignment of the welding wire and the seed layer.
[0058] Understandably, the locator 310 can be a conventional cell locator, and the transferor 320 can be a cell gripper or a cell suction cup.
[0059] Exemplarily, a method for welding battery cells using the above-described welding apparatus is provided, comprising the following steps:
[0060] S1. Fix one end of the welding wire to the fixing member 125 on the pad 121. Adjust the guide member 510 and the tensioning member 520 to press the welding wire part onto the limiting groove 122 of the pad 121. Start rotating the support body 110 to wind the welding wire into the limiting groove 122 of the pad 121. After the support body 110 rotates one revolution, adjust the guide member 510 and the tensioning member 520 to wind the welding wire into the next limiting groove 122 in the pad 121. After the welding wire on the pad 121 is wound, fix the other end to another fixing member 125 to complete the welding wire assembly.
[0061] S2. After the battery cell is positioned by the positioner 310, the transferor 320 transfers the positioned battery cell to one of the pads 121 on the pad component 100. The battery cell is adsorbed and fixed by the adsorption groove 123 on the pad 121. After the loading is completed, the support body 110 is rotated to make the pad 121 on which the battery cell is placed perform the welding operation. During this period, the heater 124 on the pad 121 preheats the pad 121, and the loading operation is repeated to load the next pad 121.
[0062] S3. The welding device 400 is used to weld the pad 121 with the battery cell in the welding position. After the welding is completed, the support body 110 rotates the next pad 121 with the battery cell to the welding position for welding. The welding of the battery string is completed after the support body 110 rotates one revolution.
[0063] It is understandable that in step S1 above, multiple welding wires can be wound simultaneously during the winding process. For example, if there are multiple welding pads 121 along the axial direction of the support 110, welding wires can be fixed and wound on each welding pad 121, improving winding efficiency. In addition, after rotating once during the winding process, the welding wire changes the winding limiting groove 122. This change point is located between two welding pads 121, so it will not affect the welding wire fixation of the welding pad 121 by the limiting groove 122.
[0064] It is understandable that in step S2, the feeding position of the feeder 300 can be selected as the horizontal pad 121 directly above the support 110, which can effectively avoid the problem of inaccurate alignment caused by the deflection of the pad 121.
[0065] Through the above technical solutions, this application provides multiple solder pad mechanisms 120 in the circumferential direction of the support body 110. Each solder pad mechanism 120 can correspond to a welding station, and can realize the feeding of solder pads 121 and the welding of battery cells as the support body 110 rotates. Moreover, this application provides multiple solder pads 121 on the solder pad mechanism 120 and provides limiting grooves 122 on the solder pads 121 to place welding wires. This not only prevents the welding wires from flipping but also ensures that the arrangement of the welding wires corresponds to the arrangement of the seed layer on the battery cell, effectively improving welding efficiency and yield.
[0066] 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.
[0067] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the 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 application should be determined by the appended claims.
Claims
1. A pad component, characterized in that, The pad component (100) includes: Support (110); A pad mechanism (120) is provided, and a plurality of the pad mechanisms (120) are arranged circumferentially along the support body (110). The pad mechanism (120) includes a plurality of pads (121) arranged axially along the support body (110). A plurality of limiting grooves (122) for limiting the welding wire are arranged side by side on the pads (121). The limiting grooves (122) penetrate the pads (121) circumferentially along the support body (110).
2. The pad component as described in claim 1, characterized in that, The cross-sectional shape of the limiting groove (122) in the direction perpendicular to the welding pad (121) is the same as the cross-sectional shape of the welding wire.
3. The pad component as described in claim 1, characterized in that, The cross-sectional shape of the limiting groove (122) is triangular.
4. The pad component as described in claim 1, characterized in that, The pad (121) is also provided with multiple adsorption grooves (123) for adsorbing and fixing the battery cells.
5. The pad component as described in claim 1, characterized in that, The pad mechanism (120) further includes a heater (124) disposed on the pad (121) for heating the pad (121).
6. The pad component as described in any one of claims 1-5, characterized in that, The pad mechanism (120) further includes a fixing member (125), which is disposed on a limiting groove (122) on the pad (121) near the edge of the support (110) and is used to fix the end of the welding wire.
7. A welding apparatus, characterized in that, The welding apparatus includes a support (200), a feeder (300), a welder, and a pad component (100) as described in any one of claims 1-6. The support (110) in the pad component (100) is rotatably mounted on the bracket (200); The feeder (300) is disposed on the bracket (200) and is used to place the battery cell on the pad (121) in the pad component (100); The welding device is mounted on the support (200) and is used to weld the battery cells placed on the welding pad (121).
8. The welding apparatus as described in claim 7, characterized in that, The welding device further includes a welding wire winding adjuster (500) disposed on the bracket (200), the welding wire winding adjuster (500) being used to wind the welding wire into the limiting groove (122) in the welding pad (121).
9. The welding apparatus as described in claim 8, characterized in that, The wire winding adjuster (500) is provided with a guide (510) and a tensioner (520). The guide (510) and the tensioner (520) are arranged opposite to each other. The guide (510) is used to maintain the stable transmission of the welding wire, and the tensioner (520) is used to tension the welding wire.
10. The welding apparatus as described in claim 9, characterized in that, The wire winding adjuster (500) is also provided with a first guide rail (530) and a second guide rail (540). The guide member (510) is slidably disposed on the first guide rail (530), and the tensioning member (520) is slidably disposed on the second guide rail (540). The guide member (510) slides along the first guide rail (530) and the tensioning member (520) slides along the second guide rail (540) to adjust the winding position of the welding wire on the welding pad (121).