Battery piece welding supporting platform and welding device

Abstract

The utility model relates to the technical field of photovoltaic module processing and manufacturing, in particular to a battery piece welding supporting platform and a welding device.The platform is provided with a supporting assembly used for supporting a battery piece, the supporting assembly is provided with a plurality of suction cups, and suction openings of the suction cups are arranged upwards so that the battery piece can be sucked and supported from the lower portion of the battery piece; the supporting assemblies are arranged between the two stand columns of each set, and at least part of the suction cups are located on the sides, adjacent to the sides where the stand columns are located, of the supporting assemblies, so that a welding strip at one end of a battery piece enters a welding station, and it is guaranteed that the welding strip makes contact with a bus bar. According to the battery piece welding supporting platform, the to-be-welded battery pieces carried by the carrying mechanism can be borne, stable supporting is provided for the battery pieces in the welding process, and stable lifting of the battery pieces is achieved through supporting of the paired stand columns and the driving mechanism controlled by a program through the welding supporting platform; alignment adjustment of a battery piece welding strip and a bus bar is achieved, and the high-precision adjustment and welding requirements of a photovoltaic module are met.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module processing and manufacturing technology, specifically to a cell welding support platform and welding device. Background Technology

[0002] In the manufacturing process of photovoltaic modules, the cell welding process is a critical step affecting module performance and yield, directly influencing the module's electrical output, mechanical strength, and long-term reliability. Cell welding typically involves welding the solder strips of multiple cells onto a busbar. The solder strips are usually made of tin-coated copper strip. The welding process connects the front and back electrodes of adjacent cells in series, forming a current path. The busbar then performs the function of current collection, connecting multiple series and parallel cell strings to the junction box.

[0003] In traditional welding processes, operators must place the solar cells on a planar support platform for solder strip positioning and hot-press welding. However, with the gradual reduction in solar cell thickness (currently generally below 200μm) and the trend towards larger sizes (e.g., 182mm / 210mm silicon wafers), the requirements for the support performance of the welding support platform are becoming increasingly stringent. Existing support platforms have a simple structure; their rigid support surfaces are prone to microcracks or fragmentation due to localized stress concentration when in contact with brittle silicon wafers. Furthermore, the flexibility of the support platform is limited, with limited ability to make minute adjustments or adjust the offset of the solder strips during solar cell welding. Existing technologies also include lifting robotic arms that pick up and lift solar cells for welding. While this lifting structure allows for position adjustment during welding, its stability is insufficient, and safety cannot be guaranteed. Therefore, there is an urgent need to develop an intelligent support platform with safe and stable support and precise adjustment capabilities to meet the high-precision welding requirements of high-efficiency photovoltaic modules. Utility Model Content

[0004] To solve, or at least partially solve, the above-mentioned technical problems, this application provides a battery cell welding support platform and welding apparatus, characterized in that it includes:

[0005] At least one set of paired columns, each column being provided with a guide rail;

[0006] A support assembly is disposed between the two columns in each group and is slidably connected to the guide rail;

[0007] Multiple suction cups are mounted on the support assembly, with the suction ports of the suction cups facing upwards, for adsorbing and supporting the battery cells; at least some of the suction cups are located on the side of the support assembly adjacent to the side where the column is located, so that one end of the battery cell extends out of the support assembly;

[0008] A drive mechanism, connected to the support assembly, is used to drive the support assembly to move along the guide rail.

[0009] Optionally, the support component includes:

[0010] Multiple spaced-apart crossbeams, with the suction cup mounted on the crossbeams;

[0011] The movable frame is located at both ends of the crossbeam and is slidably connected to the guide rail.

[0012] Optionally, the suction cups are respectively disposed on both sides of the crossbeam and arranged at intervals along the extension direction of the crossbeam.

[0013] Optionally, the crossbeam is provided with mounting ribs, the two ends of which extend to both sides of the crossbeam for mounting the suction cups, and each mounting rib is provided with at least two suction cups.

[0014] Optionally, the mounting rib is provided with an adjustment hole, the suction cup is mounted in the adjustment hole, and its position is adjustable through the adjustment hole.

[0015] Optionally, the mobile frame includes:

[0016] The mobile end plate is slidably connected to the guide rail via a slider.

[0017] A connecting rod is mounted on one side of the movable end plate via a fixing block, and the connecting rod connects to multiple crossbeams.

[0018] Optionally, each of the crossbeams has an end provided with a mounting hole, the connecting rod passes through the mounting hole, and the connecting rods located on both sides of the crossbeam are fitted with limiting blocks for restricting the crossbeam.

[0019] Optionally, four columns are provided, and the four columns are arranged in pairs on both sides of the support assembly.

[0020] Each of the movable end plates is slidably engaged with the guide rails on the two columns.

[0021] The drive mechanism is connected to the movable end plate between the two columns.

[0022] Optionally, the drive mechanism includes:

[0023] A timing belt assembly is arranged along the extension direction of the guide rail, and the timing belt of the timing belt assembly is fixedly connected to the moving end plate.

[0024] A drive motor, connected to the synchronous belt assembly, is used to drive the synchronous belt to move the support assembly along the guide rail direction.

[0025] This application provides a welding apparatus for solar cells, comprising:

[0026] The battery cell welding support platform described above;

[0027] The welding assembly has a welding station located on one side of the battery cell welding support platform;

[0028] The first transport mechanism is used to transport the busbar to the welding station;

[0029] The second transport mechanism is used to transport the battery cell to the battery cell welding support platform, and the battery cell welding support platform is used to move the welding strip at one end of the battery cell to the welding station to contact the busbar; the welding assembly is used to weld the busbar and the welding strip.

[0030] The solar cell welding support platform provided in this application features a support assembly for supporting solar cells. This assembly includes multiple suction cups with their suction ports facing upwards, allowing the solar cells to be suctioned and supported from below. The support assembly is positioned between two columns in each group, with at least some suction cups located on the side of the support assembly adjacent to the column. When the solar cell is placed on the suction cup, one end of the cell extends out of the support assembly, allowing the welding strip at one end of the cell to engage in the welding process, ensuring contact and welding between the welding strip and the busbar. The support assembly is slidably connected to a guide rail on the column, and is also connected to a drive mechanism. This drive mechanism moves the support assembly along the guide rail, adjusting the position of the solar cell. This solar cell welding support platform can receive solar cells to be welded from a transport mechanism and provides stable support during welding, avoiding the instability problems associated with traditional hoisting methods. Furthermore, the pair of column supports and the drive mechanism enable smooth displacement adjustment, achieving alignment between the solar cell welding strip and the busbar, meeting the high-precision welding requirements of photovoltaic modules.

[0031] This application provides a battery cell welding apparatus that includes the battery cell welding support platform described above, and therefore also possesses all the advantages described above. Attached Figure Description

[0032] The above and other features, properties and advantages of this utility model will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, wherein:

[0033] Figure 1 This is a schematic diagram of the structure of the battery cell welding support platform of this application;

[0034] Figure 2 This is a partially enlarged schematic diagram of the battery cell welding support platform of this application;

[0035] Figure 3This is a schematic diagram of the structure of one embodiment of the battery cell welding support platform of this application;

[0036] Figure 4 for Figure 2 Enlarged diagram of section A in the middle;

[0037] Figure 5 for Figure 3 A magnified diagram from the perspective of B in the middle.

[0038] 10. Column; 11. Guide rail;

[0039] 20. Support assembly; 21. Crossbeam; 211. Mounting rib; 212. Adjustment hole; 22. Movable frame; 221. Movable end plate; 222. Slider; 223. Fixing block; 224. Connecting rod; 225. Limiting block;

[0040] 30. Drive mechanism; 31. Drive motor; 32. Mounting base; 33. Synchronous belt; 34. Locking component;

[0041] 40. Cable chain;

[0042] 50. Suction cup;

[0043] 60. Battery cell; 601. Welding strip. Detailed Implementation

[0044] The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0046] Example 1

[0047] like Figure 1As shown, this embodiment provides a battery cell welding support platform. The battery cell welding support platform has at least one set of paired columns 10, and a support assembly 20 is provided between the two columns 10 in each set. Each column 10 is provided with a guide rail 11, and both ends of the support assembly 20 are slidably connected to the guide rail 11 on the column 10, thereby realizing displacement adjustment along the direction of the guide rail 11.

[0048] In this embodiment, the support component 20 is used to support the battery cell 60 from below. The support component 20 is provided with a plurality of suction cups 50, the suction ports of the suction cups 50 are arranged facing upwards, and the suction cups 50 extend at least partially out of the upper surface of the support component 20 to adsorb and support the battery cell 60.

[0049] In this embodiment, to meet the requirement of horizontal placement of the battery cell 60, the support assembly 20 is horizontally positioned and perpendicular to the column 10. Multiple suction cups 50 are arranged on the same horizontal plane, with the suction ports of the suction cups 50 horizontally positioned to adsorb the battery cell 60 and ensure its horizontality. Since the battery cell 60 is relatively thin, the suction cups 50 can provide flexible support for it. Furthermore, the suction cups 50 have an adaptive surface compensation function, which can effectively cope with the micron-level warping of the battery cell 60 caused by thermal expansion or slight deformation, ensuring stable support for the battery cell 60.

[0050] like Figure 1 As shown, in this embodiment, at least part of the suction cup 50 is located on the side of the support assembly 20 adjacent to the side where the column 10 is located. That is, the two ends of the support assembly 20 are the columns 10, and at least one of the other two ends is empty. At this empty end, the suction cup 50 extends out of the support assembly 20. In this way, when the battery cell 60 is placed on the support assembly 20, the end of the battery cell 60 with the welding strip 601 can extend out of the support assembly 20 so as to extend into the welding station and weld with the busbar.

[0051] This embodiment is provided with a drive mechanism 30, which is connected to the support component 20 and is used to drive the support component 20 to move along the guide rail 11. The guide rail 11 is vertically arranged with the column 10 extending in the same direction. Therefore, the drive mechanism 30 can drive the support component 20 to move up and down, thereby realizing the adjustment of the vertical position of the battery cell 60.

[0052] In one embodiment, the drive mechanism 30 can be controlled by a computer program to achieve precise displacement adjustment and meet the requirements of automated control.

[0053] The battery cell welding support platform provided in this embodiment is equipped with a support component 20 for supporting the battery cell 60. The support component 20 is equipped with multiple suction cups 50 with the suction ports of the suction cups 50 facing upwards, so as to suction and support the battery cell 60 from below, so that the battery cell 60 can be placed stably on the platform for welding, avoiding the instability of traditional hoisting mechanisms for lifting the battery cell 60 for welding.

[0054] The support assembly 20 is disposed between the two columns 10 in each group. At least part of the suction cup 50 is located on the side of the support assembly 20 adjacent to the column 10. When the battery cell 60 is placed on the suction cup 50, the welding strip 601 at one end of the battery cell 60 can extend out of the support assembly 20, so that the welding strip 601 at one end of the battery cell 60 can enter the welding station, ensuring that the welding strip 601 contacts and welds with the busbar.

[0055] In this embodiment, the support component 20 is slidably connected to the guide rail 11 on the column 10, and the support component 20 is connected to the drive mechanism 30. The drive mechanism 30 can drive the support component 20 to move up and down along the guide rail 11, thereby adjusting the position of the battery cell 60 in the vertical direction. During the welding process of the battery cell 60, the solder ribbon 601 of the battery cell 60 needs to be placed on the busbar, and a certain displacement adjustment is made to ensure that the solder ribbon 601 is in good contact with the busbar. Traditional support platforms cannot adjust the position of the solder ribbon 601 because they cannot be adjusted, thus making it impossible to determine the contact between the solder ribbon 601 and the busbar, which can easily lead to incomplete welding or missed welding. In this embodiment, after the battery cell 60 is placed on the suction cup 50, the support component 20 can move up and down along the guide rail 11, thereby adjusting the position of the battery cell 60 in the vertical direction, aligning the solder ribbon 601 with the busbar, so that the two are in full contact, thus improving the welding quality.

[0056] The cell welding support platform of this embodiment can receive the cell 60 to be welded brought over by the transport mechanism and provide stable support for the cell 60 during welding, avoiding the instability problem of traditional hoisting of cell welding. In addition, the welding support platform achieves smooth displacement adjustment through the support of paired columns 10 and the drive mechanism, realizing the alignment adjustment of the cell welding strip 601 and the busbar, meeting the high-precision welding requirements of photovoltaic modules.

[0057] like Figure 2 and Figure 3 As shown, the support assembly 20 in this embodiment includes multiple spaced-apart crossbeams 21 with suction cups 50 mounted on them. Movable frames 22 are provided at both ends of the crossbeams 21, and the movable frames 22 are slidably connected to the guide rails 11. The drive mechanism 30 drives the movable frames 22 to slide on the guide rails 11 to achieve vertical adjustment of the crossbeams 21.

[0058] In this embodiment, multiple crossbeams 21 are arranged in parallel and spaced intervals. The crossbeams 21 are horizontal and perpendicular to the column 10. Multiple suction cups 50 are installed in the gaps between the crossbeams 21, which facilitates installation and the routing of air passages for the suction cups 50. Compared with the traditional integral support platform, the arrangement of multiple crossbeams 21 reduces material usage, lightens the overall weight of the platform, simplifies the structure, and facilitates equipment installation.

[0059] Furthermore, during the welding of the solar cell 60, welding easily generates heat. Conventional metal platforms have excessively high thermal conductivity, and the integrated support platform has weak ventilation and poor heat dissipation, which may lead to localized high temperatures on the platform, affecting the solar cell 60 and causing deformation or damage. In this embodiment, multiple crossbeams 21 are arranged in parallel and at intervals, with sufficient space between each crossbeam 21 for heat dissipation, improving heat dissipation efficiency and preventing excessively high localized temperatures on the platform from affecting the solar cell 60.

[0060] In this embodiment, suction cups 50 are respectively disposed on both sides of the crossbeam 21 and arranged at intervals along the extension direction of the crossbeam 21. The number of suction cups 50 can be set according to actual needs to ensure that each battery cell 60 is effectively supported.

[0061] In this embodiment, the suction cup 50 is connected to an air path, which includes an air pipe, a control valve, and a vacuum generator. The air pipes are arranged in the gaps between the crossbeams 21 and at the bottom of the crossbeams 21. Each air pipe branch is connected to each suction cup 50 to provide negative pressure for the suction cup 50 to pick up the battery cell 60. The control valve and vacuum generator are installed in the air path and can be controlled by a remote controller to provide vacuum conditions for the air path and the suction cup 50 to achieve the suction or release of the suction cup 50.

[0062] In one embodiment, such as Figure 2 As shown, cable carriers 40 are also provided on both sides of the crossbeam 21. The cable carriers 40 are connected to the crossbeam 21 and move with the crossbeam 21. The cable carriers 40 have a accommodating space. Since there are a large number of suction cups 50 required to support the battery cells 60, there are naturally many air passages mentioned above. Therefore, multiple sets of air passages can be routed within the accommodating space of the cable carriers 40. In this way, multiple sets of air passages are reasonably routed, avoiding clutter that could affect the movement of the support assembly 20.

[0063] like Figure 4 As shown, in one embodiment, a mounting rib 211 is provided on the crossbeam 21. The mounting rib 211 is perpendicular to the crossbeam 21. Both ends of the mounting rib 211 extend to both sides of the crossbeam 21. The suction cups 50 are installed on the mounting rib 211, and each mounting rib 211 is equipped with at least two suction cups 50.

[0064] The mounting rib 211 is detachably connected to the crossbeam 21. The upper surface of the crossbeam 21 may be provided with a mounting groove arranged along the extension direction of the crossbeam 21. The mounting rib 211 can be connected to the mounting groove by a connector and can also be adjusted in the mounting groove so that the position of the suction cup 50 in the extension direction of the crossbeam 21 is adjustable.

[0065] In one embodiment, the mounting rib 211 is provided with an adjustment hole 212, and the suction cup 50 is mounted in the adjustment hole 212. The adjustment hole 212 is an elongated hole, and its position is adjustable through the adjustment hole 212. The extension direction of the elongated hole forms an angle with the extension direction of the aforementioned mounting groove, preferably perpendicular, so that the suction cup 50 can be adjusted in the lateral direction of the crossbeam 21.

[0066] like Figure 5 As shown, in this embodiment, the movable frame 22 includes a movable end plate 221, which is parallel to the column 10 or the guide rail 11. The movable end plate 221 is slidably connected to the guide rail 11 via a slider 222. A fixing block 223 is provided on one side of the movable end plate 221, and it is connected to the connecting rod 224 via the fixing block 223. The connecting rod 224 is horizontally arranged and connects multiple crossbeams 21, ensuring that the multiple crossbeams 21 are in a horizontal state.

[0067] Specifically, each crossbeam 21 has an end with a mounting hole, and a connecting rod 224 passes through the mounting hole of each crossbeam 21 to connect multiple crossbeams 21 in series. Limiting blocks 225 are sleeved on the connecting rods 224 located on both sides of the crossbeam 21. The limiting blocks 225 are used to restrict the crossbeam 21, prevent the crossbeam 21 from moving relative to the connecting rods 224, and ensure the stability of the spacing between adjacent crossbeams 21.

[0068] like Figure 1 As shown, in this embodiment, four columns 10 are provided, and the four columns 10 are arranged in pairs on both sides of the support component 20; the four columns 10 ensure the stability of the support component 20. Each movable end plate 221 is slidably engaged with the guide rails 11 on two columns 10; the movable end plate 221 ensures its stability during movement by connecting with the two columns 10.

[0069] In this embodiment, the drive mechanism 30 is connected to the movable end plate 221 between the two columns 10. The drive mechanism 30 applies a push-pull force from the middle of the movable end plate 221 to ensure that the sliders 222 on both sides of the movable end plate 221 slide smoothly with the guide rail 11, thus ensuring the stability of the battery cell 60 during its up-and-down movement.

[0070] Specifically, the drive mechanism 30 in this embodiment adopts a synchronous belt engagement mechanism, which includes a synchronous belt assembly and a drive motor 31. The synchronous belt assembly is arranged along the extension direction of the guide rail 11, and the synchronous belt 33 of the synchronous belt assembly is fixedly connected to the moving end plate 221.

[0071] The synchronous belt assembly includes two fixed bases 32 that are fixed relative to the column 10. Each fixed base 32 contains a pulley. The two fixed bases 32 are arranged vertically, and the synchronous belt 33 is fitted between the pulleys of the two fixed bases 32, making the synchronous belt 33 vertical. The output end of the drive motor 31 is connected to one of the pulleys, thereby driving the synchronous belt 33 to move. The vertical movement of the synchronous belt 33 causes the support assembly 20 to move along the guide rail 11, thus realizing the vertical adjustment of the battery cell 60 at the welding station.

[0072] like Figure 2 As shown, a locking member 34 is provided on the synchronous belt 33. The locking member 34 is fixed on the moving end plate 221. The movement of the synchronous belt 33 drives the movement of the moving end plate 221 through the locking member 34.

[0073] This embodiment uses a synchronous belt 33 for driving, which enables the support component 20 to move smoothly, meeting the needs of fine-tuning the battery cell 60 and improving stability.

[0074] Of course, in some embodiments, a lead screw or other driving method may also be used, and this embodiment is not limited to this only method.

[0075] Example 2

[0076] This embodiment provides a welding device for battery cells. The welding device has a battery cell welding support platform as mentioned in the above embodiment. The welding device has a welding assembly, which is disposed on one side of the battery cell welding support platform and forms a welding station located on one side of the battery cell welding support platform.

[0077] Specifically, the welding assembly is located on the side of the battery cell welding support platform adjacent to the support assembly 20 and the side where the column 10 is located, that is, the side where the suction cup 50 extends out of the crossbeam 21, so that when the battery cell 60 is placed on the battery cell welding support platform, the welding strip 601 on one side of the battery cell 60 can extend to the top of the welding station.

[0078] The welding apparatus also includes a first transport mechanism and a second transport mechanism. The first transport mechanism is used to transport the busbar to the welding station. The second transport mechanism is used to transport the battery cell 60 to the battery cell welding support platform. The battery cell welding support platform can move downwards to move the welding strip 601 at one end of the battery cell 60 to the welding station to contact the busbar. Then the welding assembly operates to weld the busbar and the welding strip 601, thereby completing the welding process of the battery cell 60.

[0079] The cell welding device of this embodiment possesses all the advantages of Embodiment 1 above, while being able to automatically match the busbar and the cell 60, thereby realizing the automated welding of the cell 60 and meeting the high-precision welding requirements of photovoltaic modules.

[0080] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through 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. "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.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery cell welding support platform, characterized by, The utility model relates to a kind of solar cell production line, including: At least one pair of column (10) is arranged, each column (10) is provided with guide rail (11); Supporting assembly (20) is arranged between each group of two column (10), and is slidably connected with guide rail (11); A plurality of suction cups (50) are mounted on the supporting assembly (20), the suction port of the suction cup (50) is arranged upwards, for adsorbing and supporting battery piece (60);At least part of the suction cup (50) is located on the side of the supporting assembly (20) adjacent to the side where the column (10) is located, so that one end of the battery piece (60) extends out of the supporting assembly (20); Driving mechanism (30) is connected to the supporting assembly (20), for driving the supporting assembly (20) to move along the guide rail (11).

2. The cell welding support platform of claim 1, wherein, The supporting assembly (20) includes: A plurality of spaced apart cross beams (21), the suction cups (50) are mounted on the cross beams (21); Moving frame (22) is arranged at both ends of the cross beam (21), and is slidably connected with the guide rail (11).

3. The cell welding support platform of claim 2, wherein, The suction cup (50) is arranged on both sides of the cross beam (21) respectively, and is spaced apart along the extension direction of the cross beam (21).

4. The cell welding support platform of claim 3, wherein, The cross beam (21) is provided with mounting rib plate (211), both ends of the mounting rib plate (211) extend to both sides of the cross beam (21) respectively, for mounting the suction cup (50), each mounting rib plate (211) is provided with at least two suction cups (50).

5. The cell welding support platform of claim 4, wherein, The mounting rib plate (211) is provided with adjusting hole (212), the suction cup (50) is mounted on the adjusting hole (212), and the position of the suction cup (50) can be adjusted through the adjusting hole (212).

6. The cell welding support platform of any one of claims 2 to 5, wherein, The moving frame (22) includes: Moving end plate (221) is slidably connected to the guide rail (11) through sliding block (222); Connecting rod (224) is mounted on one side of the moving end plate (221) through fixing block (223), and the connecting rod (224) is connected with a plurality of cross beams (21).

7. The cell welding support platform of claim 6, wherein, The end of each cross beam (21) is arranged in mounting hole, the connecting rod (224) penetrates the mounting hole, and the connecting rod (224) located on both sides of the cross beam (21) is provided with limiting block (225) for limiting the cross beam (21).

8. The cell welding support platform of claim 6, wherein, The column (10) is provided with four, and four column (10) is arranged on both sides of the supporting assembly (20) in pairs; Wherein, each moving end plate (221) is slidably connected with the guide rail (11) on two columns (10); The driving mechanism (30) is connected to the moving end plate (221) between two columns (10).

9. The cell welding support platform of claim 8, wherein, The driving mechanism (30) includes: Synchronous belt assembly is arranged along the extension direction of the guide rail (11), and the synchronous belt (33) of the synchronous belt assembly is fixedly connected to the moving end plate (221); Driving motor (31) is connected with the synchronous belt assembly, for driving the synchronous belt (33) to drive the supporting assembly (20) to move along the guide rail (11).

10. A device for welding a cell, characterized by Including: The battery piece welding support platform according to any one of claims 1 to 9; A welding assembly is formed with a welding station located on one side of the battery piece welding support platform; A first conveying mechanism is used to convey the busbar to the welding station; A second conveying mechanism is used to convey the battery piece (60) to the battery piece welding support platform, the battery piece welding support platform is used to move the welding strip (601) at one end of the battery piece (60) to the welding station to contact the busbar; the welding assembly is used to weld the busbar and the welding strip (601).

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