Bearing module, battery string bearing mechanism and string welding machine

Abstract

The utility model discloses a bearing module, a battery string bearing mechanism and a string welding machine. The bearing module comprises a bearing plate and N adsorption assemblies. N mounting grooves are formed in the upper surface of the bearing plate at intervals in the first direction, and the mounting grooves extend in the second direction. The upper surface of the bearing plate is provided with N + 1 solder strip bearing areas which are staggered with the N mounting grooves in the first direction. An adsorption assembly is correspondingly arranged in each mounting groove, each adsorption assembly comprises a suction cup, each suction cup is provided with a flexible adsorption end, and the adsorption ends of the suction cups extend out of the mounting grooves upwards. According to the bearing module, the suction cup arranged in the mounting groove is used for adsorbing the battery piece, the suction cup is provided with the flexible adsorption end, the adsorption end upwards extends out of the mounting groove, and the adsorption end of the suction cup contracts downwards after adsorbing the battery piece, so that the battery piece and the welding strip are ensured to be firmly and tightly attached to the bearing plate.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of photovoltaic cell production equipment. Specifically, the present application relates to a supporting plate and a cell string supporting mechanism. Background Art

[0002] When assembling existing back-contact battery strings, the solder ribbon group is generally laid on the supporting plate of the string assembly station first, and then the battery cell group is laid on the solder ribbon group. The supporting plate is provided with adsorption holes to adsorb the laid solder ribbon group and battery cell group.

[0003] However, since the solder tape is first placed on the carrier plate and the battery cell is laid on the solder tape, there will inevitably be a gap between the battery cell and the carrier plate, causing the adsorption holes to leak and unable to firmly adsorb the battery cell. Invention content

[0004] In order to solve the above technical problems, this application provides a load-bearing module, the detailed technical solution of which is as follows:

[0005] A bearing module includes a bearing plate and N adsorption components, wherein:

[0006] N mounting grooves are arranged on the upper surface of the carrying plate at intervals along the first direction, and the mounting grooves extend along the second direction, which is perpendicular to the first direction;

[0007] The upper surface of the carrying plate has N+1 solder strip carrying areas, and the N+1 solder strip carrying areas and the N mounting grooves are staggered along the first direction;

[0008] Each mounting slot is provided with a corresponding adsorption assembly, which includes a suction cup having a flexible adsorption end, the adsorption end of the suction cup extending upward from the mounting slot, and the suction cup is used to adsorb the battery cell on the carrier plate;

[0009] N≥2.

[0010] The carrier module of this application utilizes a suction cup positioned within a mounting slot to hold the battery cell. Because the suction cup has a flexible end that extends upward from the mounting slot, it retracts downward after securing the battery cell, ensuring that both the battery cell and the solder ribbon are securely attached to the carrier plate. Furthermore, the ribbon-carrying area of ​​the ribbon is staggered with the mounting slot where the suction assembly resides, preventing the ribbon from being placed on the suction assembly and causing the suction cup to deflate.

[0011] In some embodiments, the adsorption assembly further includes a suction cup pressure plate, which is pressed into the corresponding mounting groove; the suction cup pressure plate is provided with through holes corresponding one to one with the suction cups, and the adsorption end of the suction cup passes upward through the through holes.

[0012] By setting the suction cup pressure plate, the suction cup is pressed and positioned to prevent the adsorption end of the suction cup from tilting and shifting.

[0013] In some embodiments, a negative pressure cavity connected to an external air extraction device is provided in the supporting plate; a negative pressure hole connected to the negative pressure cavity is provided at the bottom of the mounting groove, and the negative pressure holes correspond to and are connected to the suction cups one by one.

[0014] The vacuum device can realize synchronous vacuuming of each suction cup through the negative pressure chamber and the negative pressure hole, so that each suction cup generates adsorption force.

[0015] In some embodiments, a blowing cavity connected to an external compressed air source is provided in the carrier plate; a blowing hole connected to the blowing cavity is provided in the welding strip carrying area, and the blowing hole is used to blow air toward the battery cell to cool the battery cell.

[0016] By providing the blowing cavity and the blowing holes, the battery cell after the welding of the welding strip is cooled, thereby accelerating the solidification of the solder on the surface of the welding strip.

[0017] In some embodiments, the carrier module further includes a heating component, which is disposed in the carrier plate and is used to heat the carrier plate and the battery cells and solder strips located on the carrier plate.

[0018] During the welding process, the heating component cooperates with the welding mechanism to heat the battery cell and the welding ribbon, thereby improving the welding efficiency.

[0019] In some embodiments, a through slot extending along the first direction is further provided on the supporting plate, and the through slot is located on the side of the N+1 solder strip supporting area; the supporting module also includes a guide plate and a lifting drive assembly, wherein: the lifting drive assembly is arranged below the through slot, the guide plate is connected to the movable part of the lifting drive assembly, and the lifting drive assembly is used to drive the guide plate to lift and lower so that the guide plate extends upward from the through slot or retracts downward into the through slot; a plurality of guide slots are provided on the guide plate, and when the guide plate extends upward from the through slot, each guide slot is used to guide a solder strip.

[0020] When placing the solder ribbon onto the carrier plate, the guide plate extends upward from the slot to guide the ribbon. The guide plate then descends back into place, allowing the ribbon to land precisely at the target location.

[0021] In some embodiments, the lifting drive assembly includes a lifting drive member, a mounting plate and an adjustment plate, wherein the mounting plate is connected to the lifting drive member, the adjustment plate is adjustably connected to the mounting plate along the second direction, and the guide plate is adjustably connected to the adjustment plate along the first direction.

[0022] By configuring the lifting drive assembly, the lifting drive assembly can achieve lifting and lowering adjustment of the guide plate. In addition, the installation position of the guide plate in the first direction and the second direction can be adjusted to ensure that the guide grooves on the guide plate can be aligned with the corresponding welding strips to guide the corresponding welding strips.

[0023] In some embodiments, adsorption holes are provided on the top of the guide plate, and the adsorption holes are used to adsorb the battery cells.

[0024] By arranging adsorption holes on the top of the guide plate, the guide plate can cooperate with the adsorption assembly to implement adsorption of the battery cell.

[0025] In some embodiments, a thermal insulation pad is provided between the supporting plate and the adjusting plate.

[0026] Prevent the bearing plate from causing high temperature impact on the adjustment plate and the lifting drive parts below the adjustment plate after being heated, while reducing the heat loss of the bearing plate and improving welding efficiency.

[0027] The present application also provides a battery string carrying mechanism, which includes a base and a plurality of carrying modules described in any of the above items, wherein the plurality of carrying modules are arranged on the base along the second direction, and the plurality of carrying modules are detachably mounted on the base, and each carrying module corresponds to carrying a battery cell.

[0028] By detachably installing a carrying module on the base, accurate positioning and stable support of multiple battery cells and multiple sets of welding ribbons can be achieved, and the fixed battery cells and welding ribbons are transported to the welding station for welding, ensuring the stability of the performance of the battery string after welding.

[0029] The present application also provides a string welding machine, which includes a string assembly mechanism, a welding mechanism, a battery string carrying mechanism and a conveying mechanism as described above, wherein:

[0030] The string welding machine is sequentially provided with a string assembly station and a welding station along the second direction. The driving end of the conveying mechanism is connected to the battery string carrying mechanism. The conveying mechanism is configured to drive the battery string carrying mechanism to move to the string assembly station and the welding station. The string assembly mechanism is provided at the string assembly station, and the welding mechanism is provided at the welding station.

[0031] When the conveying mechanism drives the battery string carrying mechanism to move to the string assembly station, the string assembly mechanism is configured to lay the welding ribbon on the battery string carrying mechanism, and the string assembly mechanism is also configured to lay a plurality of battery cells on each carrying module to implement string assembly;

[0032] When the conveying mechanism drives the battery string carrying mechanism to move to the welding station, the welding mechanism performs string welding on the welding ribbons and battery cells that have been assembled on the battery string carrying mechanism.

[0033] Through the cooperation of string assembly mechanism, welding mechanism, battery string carrying mechanism and conveying mechanism, automatic string assembly and string welding of battery cells and welding ribbons are realized, with high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the three-dimensional structure of the carrier module in the embodiment of the present application;

[0035] Figure 2 Schematic diagram of the top view of the load-bearing module in an embodiment of the present application;

[0036] Figure 3 Schematic diagram of the side structure of the carrier module in the embodiment of the present application;

[0037] Figure 4 Schematic diagram of the bottom structure of the carrier module in the embodiment of the present application;

[0038] Figure 5 Schematic diagram of the structure of the battery string supporting mechanism in the embodiment of the present application.

[0039] Figures 1 to 5 Included are:

[0040] Carrying module 10: carrying plate 1, adsorption component 2, suction cup 21, suction cup pressure plate 22, mounting slot 3, welding ribbon carrying area 4, blowing hole 5, heating component 6, temperature sensor 7, through slot 8, guide plate 9, lifting drive component 11, mounting plate 111, adjustment plate 112, exhaust connector 12, air inlet connector 13;

[0041] Base 20. DETAILED DESCRIPTION

[0042] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are part of the embodiments of the present disclosure, not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0043] like Figures 1 to 4 As shown, the carrier module 10 in the embodiment of the present application includes a carrier plate 1 and N adsorption components 2, wherein:

[0044] N mounting grooves 3 are provided on the upper surface of the carrier plate 1 at intervals along a first direction (eg, X direction). The mounting grooves 3 extend along a second direction (eg, Y direction), which is perpendicular to the first direction.

[0045] The upper surface of the carrier plate 1 has N+1 solder strip supporting areas 4, which are staggered along the first direction with the N mounting slots 3. In one implementation, each solder strip supporting area 4 is used to support at least one solder strip extending along the second direction.

[0046] Each mounting slot 3 is correspondingly provided with an adsorption component 2, which includes a suction cup 21 having a flexible adsorption end. The adsorption end of the suction cup 21 extends upward from the mounting slot 3, and the suction cup 21 is used to adsorb the battery cell on the carrier plate 1.

[0047] An adsorption assembly may include one, two, three, four, ... eight, ten or more suction cups, and the suction cups are arranged in the mounting groove at intervals along the second direction.

[0048] In the embodiment of the present application, N≥2. Figures 1 to 4 In this embodiment, N=4, meaning that four mounting slots 3 are spaced apart along a first direction on the upper surface of the carrier plate 1 , and the upper surface of the carrier plate 1 has five solder strip supporting areas 4 , with the five solder strip supporting areas 4 and the four mounting slots 3 being staggered along the first direction. Of course, other embodiments may also provide other numbers of mounting slots 3 and solder strip supporting areas 4 , such as five, seven, or ten mounting slots 3 .

[0049] In one implementation, the mounting groove 3 is a strip-shaped groove extending continuously along the second direction, and all suction cups 21 constituting the adsorption assembly are installed in the mounting groove 3 at intervals along the length direction of the mounting groove 3 .

[0050] In another implementation, the mounting slot 3 is composed of a plurality of independent slot holes spaced apart along the second direction, and at least one suction cup 21 is disposed in each slot hole.

[0051] The carrier module 10 in the embodiment of the present application uses a suction cup 21 disposed within the mounting groove 3 to absorb the battery cell placed on the carrier plate 1. The suction cup 21 has a flexible suction end that extends upward from the mounting groove 3. Once the suction end of the suction cup 21 absorbs the battery cell, it contracts downward under pressure, ensuring that the battery cell and the solder ribbon are firmly attached to the carrier plate 1.

[0052] In addition, the solder ribbon carrying area 4 for carrying the solder ribbon is staggered with the mounting groove 3 where the adsorption component 2 is located. This can prevent the solder ribbon from being placed on the adsorption component 2 and causing the suction cup 21 to deflate.

[0053] like Figures 1 to 2As shown, the suction assembly 2 optionally further includes a suction cup pressure plate 22, which is press-fitted into the corresponding mounting slot 3. The suction cup pressure plate 22 is provided with through holes corresponding to the suction cups 21, with the suction ends of the suction cups 21 extending upward through the through holes. The provision of the suction cup pressure plate 22 secures the suction cups 21 in place, preventing the suction ends of the suction cups 21 from tilting or shifting.

[0054] Optionally, a negative pressure chamber connected to an external air extraction device is provided within the carrier plate 1. Negative pressure holes connected to the negative pressure chamber are provided at the bottom of the mounting slot 3. These holes correspond to and are connected to the suction cups 21. This allows the air extraction device to simultaneously extract air from each suction cup 21 of the adsorption assembly 2 through the negative pressure chamber and the negative pressure holes, ensuring that each suction cup 21 of the adsorption assembly 2 generates a suction force.

[0055] like Figure 4 As shown, optionally, an air extraction connector 12 is provided at the bottom of the supporting plate 1 , and the air extraction connector 12 is used to connect the negative pressure chamber with an external air extraction device.

[0056] Optionally, a blowing cavity connected to an external compressed air source is provided within the carrier plate 1. Blowing holes 5 connected to the blowing cavity are provided within the ribbon carrier area 4. These holes are used to blow air toward the cells to cool them. The provision of the blowing cavity and holes 5 allows for cooling of the cells after the ribbon has been soldered, accelerating the solidification of the solder on the ribbon surface and improving welding efficiency.

[0057] like Figure 4 As shown, optionally, an air inlet connector 13 is provided at the bottom of the carrying plate 1 , and the air inlet connector 13 is used to connect the blowing cavity with an external compressed air source.

[0058] Optionally, the carrier module 10 in the embodiment of the present application further includes a heating assembly 6, which is disposed within the carrier plate 1 and is used to heat the carrier plate 1 and the cells and solder ribbons located thereon. During the welding process, the heating assembly 6 can cooperate with the welding mechanism to heat the cells and solder ribbons, thereby improving welding efficiency. The heating assembly 6 can, for example, be a heating rod plugged into the heat carrier plate 1.

[0059] Optionally, the carrier module 10 in the embodiment of the present application further includes a temperature sensor 7 disposed within the carrier plate 1, and the temperature sensor 7 is used to monitor the temperature of the carrier plate 1. The heating assembly 6 is configured to heat the carrier plate 1 based on the temperature information obtained by the temperature sensor 7, so that the temperature of the carrier plate 1 is maintained within a target range.

[0060] In one implementation, the temperature sensor may be a thermocouple.

[0061] like Figures 1 to 4As shown, optionally, the carrier plate 1 is further provided with a through slot 8 extending along the first direction, and the through slot is located on the side of the N+1 solder strip carrying area 4. The carrier module 10 also includes a guide plate 9 and a lifting drive assembly 11, wherein: the lifting drive assembly 11 is arranged below the through slot 8, and the guide plate 9 is connected to the movable part of the lifting drive assembly 11. The lifting drive assembly 11 is used to drive the guide plate 9 to rise and fall so that the guide plate 9 extends upward from the through slot 8 or retracts downward into the through slot 8. A plurality of guide slots are provided on the guide plate 9. When the guide plate 9 extends upward from the through slot 8, each guide slot is used to guide a solder strip.

[0062] As the solder ribbon is placed onto the carrier plate 1, the guide plate 9, driven by the lift drive assembly 11, extends upward out of the slot 8 to guide the ribbon. Once the ribbon is in place, the guide plate 9, driven by the lift drive assembly 11, descends back into place, allowing the ribbon to land precisely at the target location.

[0063] like Figures 3 and 4 As shown, optionally, the lifting drive assembly 11 includes a lifting drive member (not shown in the figure), a mounting plate 111 and an adjustment plate 112, wherein the mounting plate 111 is connected to the lifting drive member, the adjustment plate 112 is adjustably connected to the mounting plate 111 along the second direction, and the guide plate 9 is adjustably connected to the adjustment plate 112 along the first direction.

[0064] In one implementation, the lifting drive member may be a cylinder or a motor.

[0065] Before guiding the welding ribbons, the installation position of the guide plate 9 in the first and second directions is adjusted according to the arrangement of the welding ribbons in the welding ribbon group to ensure that each guide groove on the guide plate 9 is aligned with the corresponding welding ribbon, thereby ensuring the guidance of the corresponding welding ribbon. The guide plate 9 is driven up and down by the lifting drive member, so that the guide plate 9 can extend upward from the through slot 8 or retract downward into the through slot 8.

[0066] Optionally, adsorption holes are provided on the top of the guide plate 9. This arrangement enables the guide plate 9 to cooperate with the adsorption assembly to adsorb the battery cells, thereby improving the adsorption effect on the battery cells.

[0067] In order to prevent the supporting plate 1 from causing high-temperature impact on the adjusting plate 112 and the lifting drive parts below the adjusting plate 112 after being heated, and at the same time reduce the heat loss of the supporting plate 1 and improve the welding efficiency, an insulating pad is optionally provided between the supporting plate 1 and the adjusting plate 112.

[0068] Based on the same application concept, the embodiment of the present application also provides a battery string supporting mechanism, such as Figure 5As described, the battery string supporting mechanism in the embodiment of the present application includes a base 20 and a plurality of supporting modules 10 provided in any of the above embodiments, wherein the plurality of supporting modules 10 are arranged on the base 20 along the second direction, and the plurality of supporting modules 10 are detachably mounted on the base 20, and each supporting module 10 corresponds to supporting a battery cell.

[0069] By detachably mounting multiple support modules 10 on the base 20, the battery string support mechanism can achieve stable fixation of multiple battery cells and multiple sets of welding ribbons, and transport the fixed battery cells and welding ribbons to the welding station for welding, ensuring the stability of the performance of the battery string after welding. The multiple support modules 10 are detachably mounted on the base 20, which also facilitates subsequent maintenance. If a problem occurs with any support module 10, it can be directly removed and maintained separately, without having to remove all support modules 10, which is convenient for operation.

[0070] Based on the same application concept, an embodiment of the present application also provides a string welding machine, which includes a string assembly mechanism, a welding mechanism, a battery string carrying mechanism as described above, and a conveying mechanism, wherein: the string welding machine is sequentially provided with a string assembly station and a welding station along the second direction, the driving end of the conveying mechanism is connected to the battery string carrying mechanism, the conveying mechanism is configured to drive the battery string carrying mechanism to move to the string assembly station and the welding station, the string assembly mechanism is arranged at the string assembly station, and the welding mechanism is arranged at the welding station. When the conveying mechanism drives the battery string carrying mechanism to move to the string assembly station, the string assembly mechanism is configured to lay the welding strip on the battery string carrying mechanism, and the string assembly mechanism is also configured to lay a number of battery cells on each carrying module to implement string assembly. When the conveying mechanism drives the battery string carrying mechanism to move to the welding station, the welding mechanism performs string welding on the battery cells after string assembly is completed on the battery string carrying mechanism.

[0071] In one implementation, the string assembly mechanism includes a ribbon moving device and a cell transfer device. The ribbon moving device places the ribbon on the carrier module, and the cell transfer device places the cell on the ribbon on the carrier module. The ribbon moving device may include a clamp for holding the ribbon, and the cell moving device may include a suction cup for adsorbing the cell.

[0072] In one implementation, the welding mechanism may be an infrared welding device, an LED light welding device, a laser welding device, or the like.

[0073] Through the cooperation of string assembly mechanism, welding mechanism, battery string carrying mechanism and conveying mechanism, automatic string assembly and string welding of battery cells and welding ribbons are realized, with high work efficiency.

[0074] In the above description of this application, unless otherwise expressly specified or limited, terms such as "fixed," "mounted," "connected," or "connected" should be understood in a broad sense. For example, with respect to the term "connected," it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements. Therefore, unless otherwise expressly specified in this application, those skilled in the art can understand the specific meanings of the above terms in this application based on the specific circumstances.

[0075] According to the above description of the present application, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate orientation or position relationships, are based on the orientation or position relationships shown in the drawings of the present application, and are only for the purpose of facilitating the explanation of the scheme of the present application and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present application.

[0076] In addition, the terms "first" or "second" used in this application to refer to numbers or ordinal numbers are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0077] Although multiple embodiments of the present application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art can conceive of many changes, modifications, and alternatives without departing from the thought and spirit of the present application. It should be understood that in the process of practicing the present application, various alternatives to the embodiments of the present application described herein can be adopted. The accompanying claims are intended to define the scope of protection of the present application and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A bearing module, characterized in that: The carrying module includes a carrying plate and N adsorption components, wherein: N mounting grooves are provided on the upper surface of the carrying plate at intervals along a first direction, and the mounting grooves extend along a second direction, which is perpendicular to the first direction; The upper surface of the carrying plate has N+1 solder strip carrying areas, and the N+1 solder strip carrying areas and the N mounting grooves are staggered along the first direction; Each of the mounting slots is provided with a corresponding adsorption assembly, the adsorption assembly including a suction cup having a flexible adsorption end, the adsorption end of the suction cup extending upward from the mounting slot, the suction cup being used to adsorb the battery cell onto the carrier plate; N≥2。 2. The carrier module according to claim 1, wherein: The adsorption assembly further includes a suction cup pressure plate, which is press-fitted into the corresponding mounting groove; The suction cup pressure plate is provided with through holes corresponding to the suction cups one by one, and the adsorption ends of the suction cups pass through the through holes upward.

3. The carrier module according to claim 1, wherein: A negative pressure chamber is provided in the carrying plate and is connected to an external air extraction device; A negative pressure hole communicating with the negative pressure cavity is provided at the bottom of the mounting groove, and the negative pressure holes correspond to and are communicated with the suction cups one by one.

4. The carrier module according to claim 1, wherein: The carrier plate is provided with a blowing cavity which is in communication with an external compressed air source; The solder strip supporting area is provided with a blowing hole connected to the blowing cavity, and the blowing hole is used to blow air toward the battery cell to cool the battery cell.

5. The carrier module according to claim 1, wherein: The carrier module further includes a heating component, which is disposed in the carrier plate and is used to heat the carrier plate and the battery cells and the welding ribbons located on the carrier plate.

6. The carrier module according to claim 1, wherein: The carrying plate is further provided with a through slot extending along the first direction, and the through slot is located on the side of the N+1 solder strip carrying areas; The carrying module also includes a guide plate and a lifting drive assembly, wherein: The lifting drive assembly is arranged below the through slot, the guide plate is connected to the movable part of the lifting drive assembly, and the lifting drive assembly is used to drive the guide plate to move up and down so that the guide plate extends upward from the through slot or retracts downward into the through slot; A plurality of guide grooves are provided on the guide plate. When the guide plate extends upwardly out of the through groove, each guide groove is used to guide a welding strip.

7. The carrier module according to claim 6, wherein: The lifting drive assembly includes a lifting drive member, a mounting plate and an adjustment plate, wherein the mounting plate is connected to the lifting drive member, the adjustment plate is adjustably connected to the mounting plate along the second direction, and the guide plate is adjustably connected to the adjustment plate along the first direction.

8. The carrier module according to claim 6, wherein: The top of the guide plate is provided with adsorption holes, and the adsorption holes are used to adsorb the battery sheet.

9. The carrier module according to claim 7, wherein: A heat insulation pad is provided between the carrying plate and the adjusting plate.

10. A battery string supporting mechanism, characterized in that: The battery string supporting mechanism includes a base and a plurality of supporting modules as described in any one of claims 1 to 9, wherein the plurality of supporting modules are arranged on the base along the second direction, and the plurality of supporting modules are detachably mounted on the base, and each supporting module correspondingly supports one of the battery cells.

11. A string welding machine, characterized in that: The string welding machine includes a string assembly mechanism, a welding mechanism, a battery string carrying mechanism and a conveying mechanism as claimed in claim 10, wherein: The string welding machine is sequentially provided with a string assembly station and a welding station along the second direction, the driving end of the conveying mechanism is connected to the battery string carrying mechanism, and the conveying mechanism is configured to drive the battery string carrying mechanism to move to the string assembly station and the welding station, the string assembly mechanism is provided at the string assembly station, and the welding mechanism is provided at the welding station; When the conveying mechanism drives the battery string carrying mechanism to move to the string assembly station, the string assembly mechanism is configured to lay the welding ribbon on the battery string carrying mechanism, and the string assembly mechanism is further configured to lay a plurality of battery cells on each carrying module to implement string assembly; When the conveying mechanism drives the battery string carrying mechanism to move to the welding station, the welding mechanism performs string welding on the welding ribbons and battery cells that have been stringed together on the battery string carrying mechanism.

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