Battery pole welding line

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pole welding line which comprises a magnetic drive conveying belt, a feeding device, a welding device and an overturning discharging device, the magnetic drive conveying belt is provided with a battery clamp and a magnetic drive guide rail, and the magnetic drive guide rail limits the flowing direction of the battery clamp and is used for driving the battery clamp to move; the feeding device is located on the peripheral side of the magnetic drive conveying belt and used for connecting the batteries into the battery clamps located at the head ends of the magnetic drive guide rails. The welding device is located at the downstream of the feeding device and used for welding the pole to the battery; the overturning discharging device is located on the downstream portion of the welding device and provided with an overturning module, and the overturning module is used for moving the battery in the battery clamp out of the magnetic drive conveying belt and overturning the welded battery. Therefore, the plug-and-play of the battery pole welding line on the existing battery general assembly line can be realized, the standardization requirements of different processes of top welding and side welding can be met, and the production efficiency of the battery is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery terminal welding line. Background Technology

[0002] In related technologies, battery production lines are evolving towards higher cycle times, higher yield rates, and greater flexibility. Traditional battery terminal welding lines typically employ chain conveyors, roller conveyors, or automated guided vehicles (AGVs) in conjunction with multiple independent workstations. However, these traditional solutions are increasingly revealing their limitations in terms of precision, efficiency, reliability, and floor space when dealing with next-generation high-performance batteries, especially large-capacity, high-current prismatic batteries. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a battery terminal welding wire that is compact, highly flexible, has higher production efficiency, better compatibility, and can be used plug-and-play.

[0004] This application provides a battery terminal welding line, including: a magnetic drive conveyor belt, a feeding device, a welding device, and a flipping and unloading device. The magnetic drive conveyor belt has a battery clamp and a magnetic drive guide rail. The magnetic drive guide rail defines the flow direction of the battery clamp and is used to drive the movement of the battery clamp. The feeding device is located on the periphery of the magnetic drive conveyor belt and is used to connect the battery to the battery clamp located at the first end of the magnetic drive guide rail. The welding device is located downstream of the feeding device and is used to weld the terminal to the battery. The flipping and unloading device is located downstream of the welding device and has a flipping module. The flipping module is used to remove the battery from the battery clamp from the magnetic drive conveyor belt and flip the welded battery.

[0005] According to the battery terminal welding line of this application embodiment, the welding device can weld the end cap to the terminal, and the feeding device and flipping unloading device can realize the connection of the "semi-finished battery" and the adaptive output of the battery with the terminal and end cap welded. The setting of the magnetic drive conveyor belt can also make the battery terminal welding line have a certain degree of layout flexibility, which can be rationally arranged according to different space requirements. It can realize the plug-and-play of the battery terminal welding line on the existing "battery assembly line" and has high compatibility. It can meet the different process standardization requirements of top welding and side welding, and can effectively improve the production efficiency of the battery based on its compactness, high speed and flexibility.

[0006] According to some embodiments of this application, the flipping and unloading device includes: a transport module located at the tail end of the magnetic drive rail, the transport module having an unloading robot for removing batteries from the battery clamp, the battery clamp being adapted to move from the tail end to the head end under the drive of the magnetic drive rail.

[0007] In the above technical solution, at the tail end, the transport module removes the battery with the end cap and terminal post welded from the battery clamp. The unloading robot is constructed as a variable-distance robot, and the gripping size of the robot is adjustable to dynamically adjust its gripping size according to the battery size and the distance between adjacent batteries. The unloading robot is constructed to remove multiple batteries from the battery clamp at the same time, so that the transport cycle of the transport module is synchronized with the conveying cycle of the magnetic drive conveyor belt, achieving efficient connection and further improving the welding efficiency of the battery terminal post welding line.

[0008] Meanwhile, after the battery clamp completes the battery unloading at the tail end, it can move to the head end to connect with the "semi-finished battery" to be welded. This allows multiple battery clamps to move sequentially to multiple positions within the battery terminal welding line, which can also improve production efficiency.

[0009] According to some embodiments of this application, the flipping module includes: at least one flipping table, on which a flipping fixture and a bottom tray are provided, the flipping fixture is adapted to flip a battery located inside the flipping fixture, and the bottom tray is located below the flipping fixture and is adapted to support the battery.

[0010] In the above technical solution, the battery can be flipped by setting the flipping module so that the battery can meet the processing requirements of different subsequent processes, and the battery terminal welding line can be plug-and-play and compatible with the requirements of multiple "battery assembly lines".

[0011] According to some embodiments of this application, the battery terminal welding line further includes: an upper cover device and a lower cover device. The battery clamp includes: a clamp body, a first positioning part and a second positioning part located on both sides of the clamp body, a first protective cover detachably disposed on the first positioning part, and a second protective cover detachably disposed on the second positioning part. The upper cover device is adapted to take the first protective cover from the first positioning part and install it onto the first terminal of the battery, and to take the second protective cover from the second positioning part and install it onto the second terminal of the battery. The lower cover device is adapted to remove the first protective cover from the first terminal and install it onto the first positioning part, and to remove the second protective cover from the second terminal and install it onto the second positioning part.

[0012] In the above technical solution, on the one hand, a first protective cover and a second protective cover are respectively provided for the first electrode and the second electrode. While achieving welding protection for the first electrode and the second electrode, it can also avoid the mixing and misuse of protective covers, thereby avoiding cross-contamination, effectively improving welding quality, and improving the safety and reliability of battery use. On the other hand, both the first protective cover and the second protective cover are circulated with the battery fixture. The first protective cover and the second protective cover can be recycled, which can not only reduce costs, but also improve processing efficiency by placing both the first protective cover and the second protective cover near the battery.

[0013] According to some embodiments of this application, the welding apparatus includes: a first welding module and a second welding module, the first welding module and the second welding module are arranged opposite to each other in a first direction and are respectively used to weld the first pole post to the end cap and the second pole post to the end cap, the upper cover device is arranged opposite to the first welding module in a second direction, the lower cover device is arranged opposite to the second welding module in a second direction, and the upper cover device and the lower cover device are located on the same side of the welding apparatus in the second direction, and the first direction and the second direction have an angle.

[0014] In the above technical solution, the first welding module and the second welding module are arranged opposite to each other in the first direction, and the upper cover device and the lower cover device are located on the same side of the welding device in the second direction. The upper cover device and the lower cover device are also arranged opposite to each other in the first direction, which can make the overall arrangement of the welding device, the upper cover device and the lower cover device more compact, improve the space occupation of the battery terminal welding line, and make the overall battery terminal welding more compact.

[0015] According to some embodiments of this application, the magnetic drive rail includes: a guide rail and a stator winding array arranged along the extension direction of the guide rail, and a permanent magnet for magnetic drive transmission with the stator winding array is embedded in the clamp body of the battery clamp.

[0016] In the above technical solution, the stator winding array on the magnetic drive rail moves in coordination with the permanent magnet, which can ensure higher reliability and stability during the synchronous movement of the battery and battery clamp. There is no relative displacement during high-speed movement. If the central control system can use a high-resolution magnetic grating ruler to implement feedback on the position of the permanent magnet (i.e., the position of the battery clamp) to achieve micron-level positioning, the battery clamp and battery can move quickly between multiple positions with higher positioning accuracy. This enables high-cycle, high-precision transportation and effectively simplifies the structure of the battery terminal welding line.

[0017] According to some embodiments of this application, the fixture body is further provided with a positioning block and an adsorption part, the positioning block is used to position the battery, and the adsorption part is used to adsorb the battery under negative pressure.

[0018] In the above technical solution, one of the positioning block and the adsorption part can be used to fix the battery casing and the other to fix the end cap, so as to ensure that there is no relative displacement between the battery casing and the end cap during the movement of the battery clamp, and to ensure that there is no relative movement before the battery moves to the flipping unloading device. This can improve the welding accuracy and welding quality of the end cap and the terminal post, and avoid displacement between the end cap and the battery casing. It can also improve the welding accuracy between the end cap and the battery casing in the future, and improve the overall processing accuracy and processing quality of the "battery assembly line".

[0019] According to some embodiments of this application, the guide rail is circular to adapt the battery clamp to switch between the head position, the top cover position, the welding position, the bottom cover position, and the tail position.

[0020] In the above technical solution, by setting up a ring-shaped guide rail, multiple battery clamps can flow on the ring-shaped guide rail, which can improve production efficiency. Multiple battery clamps can be reserved on the guide rail as buffers, which can also reduce the impact of system downtime and ensure stable and reliable production cycle. At the same time, it can make the arrangement of the feeding device, the top cover device, the welding device, the bottom cover device, and the flipping feeding device more compact, occupy less space, and reduce the difficulty of arrangement.

[0021] According to some embodiments of this application, the battery terminal welding line further includes: a detection device located downstream of the lower cover device and upstream of the transport module. The detection device is used to detect the batteries that have been welded on the battery clamp and to calibrate the batteries.

[0022] In the above technical solution, the welded battery can be tested by a detection device to determine whether the welded battery meets the welding standards, so as to remove NG batteries in a timely manner and improve the reliability of the battery terminal welding line.

[0023] According to some embodiments of this application, the flipping unloading device further includes a sorting module located downstream of the flipping module, wherein the sorting robot of the sorting module is used to sort the tagged batteries to the unloading logistics line or the defective recycling line.

[0024] In the above technical solution, the sorting robot picks up batteries that have undergone posture adjustment from the flipping module and can receive calibration signals from the detection device. For OK batteries, the sorting robot smoothly places them on the unloading logistics line for transfer to the next process; for NG batteries, the sorting robot places them on a dedicated defective recycling line, achieving automatic separation of defective batteries. The entire process is fully automated, ensuring accurate correspondence between product flow and information flow.

[0025] According to some embodiments of this application, the feeding device, the flipping module, and the sorting module are arranged sequentially in the second direction.

[0026] In the above technical solution, the feeding device is located at the end of the first section, and the flipping module is located at the end of the second section. The feeding device, flipping module, and sorting module can be arranged sequentially in the second direction, which can further improve the space occupation of the battery terminal welding line. The battery terminal welding line can be fed from the first direction and discharged from the second direction, so that the battery terminal welding line has less impact on the overall flow of the "battery assembly line" after being inserted into the "battery assembly line", and the layout changes required for the "battery assembly line" are smaller.

[0027] According to some embodiments of this application, the feeding device includes a feeding robot for connecting batteries on the feeding line to a battery clamp located at the first end.

[0028] In the above technical solution, the feeding device has a feeding robot driven by a linear motor. The end of the feeding robot can be equipped with multiple independently controlled flexible adaptive grippers, which can simultaneously pick up multiple batteries from the feeding line in each cycle. The grippers integrate a flexible system to ensure that the gripping process is accurate and does not damage the battery casing. After gripping, the feeding robot accurately places the battery into the battery holder that is waiting at the head end. The battery holder automatically clamps and fixes the battery casing and end cap, achieving seamless battery connection through the feeding device, enabling plug-and-play use of battery terminal welding wires.

[0029] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0031] Figure 1 This is a schematic diagram of the battery terminal welding line according to an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of a feeding device according to an embodiment of this application;

[0033] Figure 3 This is a schematic diagram of a welding apparatus according to an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of a transport module according to an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of a flipping module according to an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of a sorting module according to an embodiment of this application;

[0037] Figure 7 This is a schematic diagram of the cover device according to an embodiment of this application;

[0038] Figure 8 This is a schematic diagram of the lower cover device according to an embodiment of this application;

[0039] Figure 9 This is a schematic diagram illustrating the engagement of a battery clamp and a battery according to an embodiment of this application;

[0040] Figure 10 This is a schematic diagram of the first protective cover according to an embodiment of this application;

[0041] Figure 11 This is a schematic diagram of the second protective cover according to an embodiment of this application.

[0042] Figure label:

[0043] Battery terminal welding wire 100,

[0044] Magnetic drive conveyor belt 10, battery clamp 11, clamp body 111, first positioning part 112, second positioning part 113, magnetic drive guide rail 12.

[0045] Feeding device 20, feeding robot 21,

[0046] Welding apparatus 30, first welding module 30a, second welding module 30b, vision guidance unit 31, welding section 32, fifth drive section 33.

[0047] The system includes a tilting and unloading device 40, a handling module 41, an unloading robot 411, a tilting module 42, a tilting table 421, a tilting clamp 422, a bottom pallet 423, a sorting module 43, and a sorting robot 431.

[0048] Top cover assembly 50, top cover platform 51, first gripper 52, first drive unit 53, second gripper 54, second drive unit 55, second replacement tray 56.

[0049] Lower cover assembly 60, lower cover platform 61, third gripper 62, third drive unit 63, fourth gripper 64, fourth drive unit 65, first replacement tray 66.

[0050] Detection device 70,

[0051] First protective cover 101, first clamping hole 1011, first positioning hole 1012, second protective cover 102, second clamping hole 1021, second positioning hole 1022.

[0052] Battery 200, end cap 210, first terminal 220, second terminal 230.

[0053] Material unloading and logistics line 201, defective product recycling line 202.

[0054] First direction X, second direction Y. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0056] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application 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 description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0057] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0059] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0060] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0061] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0062] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0063] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0064] In this application, "multiple" means two or more (including two).

[0065] A single battery cell can be a rechargeable battery. A rechargeable battery is a battery cell that can be recharged after it has been discharged, allowing the active materials to be activated and the cell to continue to be used.

[0066] The battery processed in this application embodiment is a square battery. The square battery includes: a housing in the shape of a quadrangular prism, an end cap, and an electrode assembly. The housing is used to define an accommodating space with an installation opening. The electrode assembly and the insulating cover are both disposed inside the housing, and the installation opening is sealed by the end cap.

[0067] For example, the housing is generally prism-shaped and one end is open to form a receiving space with an installation port. Electrode components and other functional components such as insulating covers can be installed in the receiving space. The end cap is closed on the installation port of the housing to isolate the internal environment of the battery cell from the external environment. The shape of the end cap is adapted to the shape of the housing. The end cap can be supported by a material with a certain hardness and strength (such as aluminum alloy or carbon fiber plate). The end cap can effectively protect the safety and reliability of the internal components of the housing when squeezed or impacted.

[0068] In some embodiments, the end cap may also be provided with a pressure relief device for releasing internal pressure when the internal pressure or temperature of the battery cell reaches a threshold. The end cap can also be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this.

[0069] In some embodiments, an insulating cover may be provided inside the end cap. The insulating cover can be used to isolate the electrical connection components inside the housing from the end cap to reduce the risk of short circuits. For example, the insulating cover may be made of plastic, rubber, etc., to achieve insulation protection.

[0070] The housing is a component used to fit with the end cap to form the internal environment of a battery cell, wherein the formed internal environment can accommodate electrode components, electrolyte, and other parts. The housing and end cap can be separate components, and a mounting port can be provided on the housing, through which the end cap closes to form the internal environment of the battery cell.

[0071] Electrode assemblies are the components within a single battery cell where electrochemical reactions occur. A casing may contain one or more electrode assemblies. Electrode assemblies are primarily formed by winding or stacking positive and negative electrode sheets, typically with a separator between them. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly, while the portions without active material each form a tab. The positive and negative tabs can be located together at one end of the main body or separately at both ends. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0072] In related technologies, battery production lines are evolving towards higher cycle times, higher yield rates, and greater flexibility. Traditional battery terminal welding lines typically employ chain conveyors, roller conveyors, or automated guided vehicles (AGVs) in conjunction with multiple independent workstations. However, these traditional solutions are increasingly revealing their limitations in terms of precision, efficiency, reliability, and floor space when dealing with next-generation high-performance batteries, especially large-capacity, high-current prismatic batteries.

[0073] Specifically, in the existing technology, the battery terminal welding line is used for welding the end cap semi-finished product. It is specifically used to weld the terminal onto the end cap. The end cap still needs to be welded to the battery casing later. This is an offline, segmented manufacturing mode, that is, after the battery casing is processed, it is further welded and assembled with the end cap that has completed the terminal welding.

[0074] Based on this, this application proposes a battery terminal welding line. This application directly performs terminal welding on the "finished battery," seamlessly integrating the terminal welding into the battery assembly line. This eliminates the need for handling and storage after end cap welding, as well as the need for loading materials there, simplifying the overall logistics and improving battery processing efficiency. In other words, in the prior art, end cap welding is an offline, segmented processing "island," while this application, by setting up magnetic drive rails, a loading device, and a flipping unloading device, can directly embed the welding of the end cap and terminal into the "battery assembly line." It can be used as a standardized functional module, directly inserted into existing battery casing and end cap welding production lines, achieving plug-and-play functionality. It also has a certain degree of flexibility, requiring no major changes to existing production lines, allowing for rapid deployment, reducing equipment deployment time, and improving production efficiency.

[0075] The following is for reference. Figures 1-11 Description of battery terminal welding line 100 according to an embodiment of the present utility model.

[0076] like Figure 1 As shown, this application provides a battery terminal welding line 100, including: a magnetic drive conveyor belt 10, a feeding device 20, a welding device 30, and a flipping unloading device 40.

[0077] The magnetic drive conveyor belt 10 has a battery clamp 11 and a magnetic drive rail 12. The magnetic drive rail 12 defines the flow direction of the battery clamp 11 and is used to drive the movement of the battery clamp 11. The loading device 20 is located on the periphery of the magnetic drive conveyor belt 10 and is used to connect the battery 200 to the battery clamp 11 located at the first end of the magnetic drive rail 12. The welding device 30 is located downstream of the loading device 20 and is used to weld the terminal to the battery 200. The flipping unloading device 40 is located downstream of the welding device 30 and has a flipping module 42. The flipping module 42 is used to remove the battery 200 in the battery clamp 11 from the magnetic drive conveyor belt 10 and flip the welded battery 200.

[0078] It should be noted that in this application, the welding device 30 is used to weld the terminals to the battery 200, which means welding the terminals to the end cap 210 of the battery 200. The battery 200 that is being fed can be defined as a "semi-finished battery", that is, the battery 200 casing and the end cap 210 have been assembled, but the welding of the battery 200 casing and the end cap 210 has not been completed. The battery 200 that has been flipped to complete the welding means that the battery 200 after the terminals and the end cap 210 have been welded has been flipped.

[0079] Specifically, the battery terminal welding line 100 of this application embodiment includes at least: a magnetic drive conveyor belt 10, a feeding device 20, a welding device 30, and a flipping and unloading device 40. The magnetic drive guide rail 12 of the magnetic drive conveyor belt 10 is used to drive the battery clamp 11 to move between multiple positions. The battery clamp 11 moves at least between the first end position, the welding position, and the last end position. At the first end position, the feeding device 20 can be used to connect the battery 200 into the battery clamp 11. The battery clamp 11 with the battery 200 can be further moved to the welding position under the drive of the magnetic drive guide rail 12 to weld the end cap 210 to the terminal. It then enters the last end position and flips and unloads the battery 200 through the flipping and unloading device 40.

[0080] It is understood that, in this embodiment of the application, the feeding device 20 allows the battery terminal welding line 100 to connect the "semi-finished battery" to the battery clamp 11 from the existing "battery assembly line". The welding device 30 enables the welding of the end cap 210 and the terminal. The flipping unloading device 40 can not only unload the battery 200 after the terminal and end cap 210 welding is completed and send it back to the existing "battery assembly line", but also flip the battery 200 based on the subsequent processing flow of the "battery assembly line" to be compatible with the subsequent welding of the battery casing and end cap 210. For example, the subsequent process is two different subsequent welding processes: end cap 210 facing (for end cap 210 edge welding) or end cap 210 facing down (end cap 210 side welding), to be compatible with different "battery assembly lines", giving the entire battery terminal welding line 100 layout flexibility and realizing plug-and-play.

[0081] According to the battery terminal welding line 100 of this application embodiment, the welding device 30 can weld the end cap 210 to the terminal, and the feeding device 20 and the flipping unloading device 40 can realize the connection of the "semi-finished battery" and the adaptive output of the battery 200 after welding the terminal and end cap 210. The setting of the magnetic drive conveyor belt 10 can also make the battery terminal welding line 100 have a certain degree of layout flexibility, which can be rationally arranged according to different space requirements. It can realize the plug-and-play of the battery terminal welding line 100 on the existing "battery assembly line" and has high compatibility. It can meet the different process standardization requirements of top welding and side welding, and can effectively improve the production efficiency of battery 200 based on its compactness, high speed and flexibility.

[0082] like Figure 2 As shown, according to some embodiments of this application, the feeding device 20, the flipping module 42, and the sorting module 43 are arranged sequentially in the second direction.

[0083] Specifically, the feeding device 20 is located at the end of the first section, and the flipping module 42 is located at the end of the second section. The feeding device 20, the flipping module 42, and the sorting module 43 can be arranged sequentially in the second direction. This can further improve the space occupation of the battery terminal welding line 100 and allow the battery terminal welding line 100 to be fed from the first direction and discharged from the second direction. This makes the impact of the battery terminal welding line 100 on the overall flow of the "battery assembly line" smaller after it is inserted into the "battery assembly line", and the layout changes required for the "battery assembly line" are smaller.

[0084] Combination Figure 1 and Figure 2 As shown, according to some embodiments of this application, the loading device 20 includes a loading robot 21, which is used to connect the battery 200 on the loading line to the battery clamp 11 located at the first end. Specifically, the loading device 20 has a loading robot 21 driven by a linear motor, and the end of the loading robot 21 can be equipped with multiple independently controlled flexible adaptive grippers (e.g., ...). Figure 2 (As shown in the diagram, there are four), and multiple batteries 200 can be simultaneously gripped from the feeding line in each cycle. The flexible adaptive gripper integrates a flexible system to ensure accurate gripping without damaging the battery casing, such as by setting flexible pads on the gripping part of the gripper. After gripping, the feeding robot 21 accurately places the battery 200 into the battery holder 11, which is waiting at the first end position, and the battery holder 11 automatically clamps and fixes the battery casing and end cap 210.

[0085] Thus, the seamless connection of the battery 200 is achieved through the feeding device 20, enabling the battery terminal welding line 100 to be used immediately.

[0086] like Figure 4 As shown, according to some embodiments of this application, the flipping unloading device 40 includes: a transport module 41, the transport module 41 being located at the tail end of the magnetic drive rail 12, the transport module 41 having an unloading robot 411, the unloading robot 411 being used to remove the battery 200 from the battery clamp 11, the battery clamp 11 being adapted to flow from the tail end position to the head end position under the drive of the magnetic drive rail 12.

[0087] Specifically, the structure of the transport module 41 is similar to that of the loading device 20. At the tail end, the transport module 41 removes the battery 200 with the end cap 210 and the terminal post welded from the battery clamp 11. The unloading robot 411 is constructed as a variable-distance robot. The gripping size of the variable-distance robot is adjustable so as to dynamically adjust its gripping size according to the size of the battery 200 and the distance between adjacent batteries 200. The unloading robot 411 is constructed to remove multiple batteries 200 from the battery clamp 11 at the same time, so that the transport rhythm of the transport module 41 is synchronized with the conveying rhythm of the magnetic drive conveyor belt 10, achieving efficient connection and further improving the welding efficiency of the battery terminal post welding line 100.

[0088] Meanwhile, after the battery clamp 11 completes the unloading of the battery 200 at the tail end, it can move to the head end to connect with the "semi-finished battery" to be welded. This allows multiple battery clamps 11 to be sequentially moved to multiple positions within the battery terminal welding line 100, which can also improve production efficiency.

[0089] According to some embodiments of this application, the flipping unloading device 40 further includes a flipping module 42, which includes at least one flipping table 421. The flipping table 421 is provided with a flipping clamp 422 and a bottom tray 423. The flipping clamp 422 is adapted to flip the battery 200 located inside the flipping clamp 422. The bottom tray 423 is located below the flipping clamp 422 and is adapted to support the battery 200.

[0090] It should be noted that the unloading robot 411 can be rationally configured based on the number of batteries 200 that the flipping module 42 can flip at the same time. For example, the unloading robot 411 can also be configured to group the batteries 200 while removing them. For example, it can remove four batteries 200 at the same time, and the flipping module 42 can flip two batteries 200 at the same time, thus dividing the four batteries 200 into two groups.

[0091] like Figure 5As shown, the flipping module 42 can have two flipping tables 421, which can achieve a precise 180° flipping by servo motor. When the subsequent process is top welding, there is no need to flip the battery 200. When the subsequent process is side welding, the flipping module 42 can stably and efficiently flip the battery 200 so that the end cap 210 is facing down to meet the process requirements of side welding.

[0092] Specifically, the flipping table 421 is provided with a flipping fixture 422 that can be flipped relative to the flipping table 421. There can be at least one flipping fixture 422 on each flipping table 421. The unloading robot 411 is used to place the battery 200 into the flipping fixture 422. The bottom tray 423 is located above the flipping fixture 422 and can switch between an upward position and a downward position. When the battery 200 is placed into the flipping fixture 422, the flipping fixture 422 is in a released state. The clamping space of the flipping fixture 422 is larger than that of the battery 200. The bottom tray 423 switches to an upward position to support the battery 200. After the battery 200 is clamped by the flipping fixture 422, the bottom tray 423 switches back to a downward position to avoid the flipping fixture 422 and avoid interfering with the flipping of the battery 200. After the flipping is completed, the bottom tray 423 further switches back to an upward position and the flipping fixture 422 is released so that the sorting module 43 can sort the flipped battery 200.

[0093] Therefore, by setting the flip module 42, the battery 200 can be flipped so that the battery 200 can meet the processing requirements of different subsequent processes, and the battery terminal welding line 100 can be plug-and-play and compatible with the requirements of various "battery assembly lines".

[0094] like Figure 7 , Figure 8 and Figure 9 As shown, according to some embodiments of this application, the battery terminal welding line 100 further includes: an upper cover device 50 and a lower cover device 60. The battery clamp 11 includes: a clamp body 111, a first positioning part 112 and a second positioning part 113 located on both sides of the clamp body 111, a first protective cover 101 detachably disposed on the first positioning part 112, and a second protective cover 102 detachably disposed on the second positioning part 113. The upper cover device 50 is adapted to take the first protective cover 101 from the first positioning part 112 and install it onto the first terminal 220 of the battery 200, and to take the second protective cover 102 from the second positioning part 113 and install it onto the second terminal 230 of the battery 200. The lower cover device 60 is adapted to remove the first protective cover 101 from the first terminal 220 and install it onto the first positioning part 112, and to remove the second protective cover 102 from the second terminal 230 and install it onto the second positioning part 113.

[0095] Understandably, electrode welding is a critical step in the battery 200 production process. The electrodes (such as the positive and negative electrodes) are fixed to the end cap 210 by welding (laser welding), and the welding quality directly determines the battery 200's conductivity, sealing reliability, and long-term safety. The welding process is carried out under extremely precise conditions; however, when a high-energy laser beam acts on metal, high-temperature metal spatter (weld slag) is inevitably generated. If these tiny, high-speed spatter particles land on specific areas of the electrode itself, they can cause a series of serious quality problems and safety hazards.

[0096] Specifically, the connection of the battery 200's terminals to connecting tabs (such as busbars) or different components of the end cap 210 via laser welding is a crucial and technically challenging process. The quality of the terminal welding directly determines the battery 200's current carrying capacity, connection resistance, mechanical strength, and long-term reliability. Any incomplete soldering, burn-through, porosity, or cracks can lead to localized overheating of the battery 200, power reduction, and even, in extreme cases, safety accidents.

[0097] Based on this, see Figure 9 As described above, this application allows the first protective cover 101 disposed on the first positioning part 112 and the second protective cover 102 disposed on the second positioning part 113 to selectively cover the first electrode post 220 and the second electrode post 230, respectively. This can achieve welding protection for the first electrode post 220 and the second electrode post 230, preventing welding slag from splashing onto the first electrode post 220 or the second electrode post 230 during the welding process, thus ensuring welding quality and avoiding welding quality problems such as incomplete welding and short circuits. This improves the stability and safety of the battery 200 after welding. Furthermore, the first protective cover 101 and the second protective cover 102 can be respectively set for clamping the first electrode post 220 and the second electrode post 230, which can further improve the protective effect and avoid cross-contamination, thereby further improving the welding quality.

[0098] The upper cover device 50, the welding device 30, and the lower cover device 60 are arranged sequentially in the flow direction of the battery clamp 11. The upper cover device 50 is adapted to take the first protective cover 101 from the first positioning part 112 and install it onto the first terminal post 220 of the battery 200, and to take the second protective cover 102 from the second positioning part 113 and install it onto the second terminal post 230 of the battery 200. The welding device 30 is adapted to weld the first terminal post 220 to the battery casing and to weld the second terminal post 230 to the battery casing. The lower cover device 60 is adapted to remove the first protective cover 101 from the first terminal post 220 and install it onto the first positioning part 112, and to remove the second protective cover 102 from the second terminal post 230 and install it onto the second positioning part 113.

[0099] Specifically, the battery clamp 11 has a specific flow direction, which can be defined by setting the magnetic drive conveyor belt 10. The upper cover device 50, the welding device 30 and the lower cover device 60 are arranged in sequence in the flow direction of the battery clamp 11, so that the battery clamp 11 can pass through the upper cover device 50, the welding device 30 and the lower cover device 60 in sequence.

[0100] Furthermore, at the location of the upper cover device 50, the first protective cover 101 on the first positioning part 112 of the battery clamp 11 can be placed on the first terminal 220, and the second protective cover 102 on the second positioning part 113 of the battery clamp 11 can be placed on the second terminal 230. Then, the device is transferred to the location of the welding device 30. At the location of the welding device 30, the first terminal 220 can be welded to the battery casing (e.g., end cap 210), and the second terminal 230 can be welded to the battery casing. The device is then transferred to the location of the lower cover device 60. At the location of the lower cover device 60, the first protective cover 101 can be... The first terminal 220 is removed and returned to the first positioning part 112, and the second protective cover 102 is removed from the second terminal 230 and returned to the second positioning part 113. This not only protects the first terminal 220 with the first protective cover 101 and the second terminal 230 with the second protective cover 102, thus preventing welding slag from splashing onto the first terminal 220 and the second terminal 230 and improving welding quality, but also allows the first protective cover 101 and the second protective cover 102 to circulate with the battery clamp 11. The first protective cover 101 and the second protective cover 102 can be recycled, which can reduce costs and improve processing efficiency.

[0101] It should be noted that one of the first terminal 220 and the second terminal 230 of the battery 200 is a positive terminal and the other is a negative terminal. For example, if the first terminal 220 is a positive terminal, then the second terminal 230 is a negative terminal, or the first terminal 220 is a negative terminal and the second terminal 230 is a positive terminal. The positive and negative terminals are made of different materials, such as aluminum for the positive terminal and copper for the negative terminal. In order to prevent the use of protective covers and thus prevent cross-contamination, this application provides a first positioning part 112 and a second positioning part 113. The first protective cover 101 corresponding to the first terminal 220 is fixed on the first positioning part 112, and the second protective cover 102 corresponding to the second terminal 230 is fixed on the second positioning part 113. This can reduce the probability of mixed or misused protective covers, effectively avoid cross-contamination, and further improve the welding quality.

[0102] According to the battery terminal welding line 100 of this application embodiment, a first positioning part 112 and a second positioning part 113 are provided on the battery clamp 11 to support the first protective cover 101 and the second protective cover 102, respectively. The protective cover can be installed by the upper cover device 50 located upstream of the welding device 30 and removed by the lower cover device 60 located downstream of the welding device 30. On the one hand, the first protective cover 101 and the second protective cover 102 are respectively provided for the first terminal 220 and the second terminal 230. While achieving welding protection for the first terminal 220 and the second terminal 230, the mixing and misuse of the protective covers can also be avoided to prevent cross-contamination, effectively improving the welding quality and improving the safety and reliability of the battery 200. On the other hand, the first protective cover 101 and the second protective cover 102 are both circulated with the battery clamp 11. The first protective cover 101 and the second protective cover 102 can be recycled, which not only reduces costs, but also improves processing efficiency by allowing the first protective cover 101 and the second protective cover 102 to be set close to the battery 200.

[0103] like Figure 10 and Figure 11 As shown, according to some embodiments of this application, the first protective cover 101 and the second protective cover 102 are respectively provided with a first clamping hole 1011 and a second clamping hole 1021, and at least one of the number, position and size of the first clamping hole 1011 and the second clamping hole 1021 is different.

[0104] Specifically, both the first protective cover 101 and the second protective cover 102 include a cover body and a flange portion located on the periphery of the cover body. The flange portion can be sleeved onto the first pole post 220 or the second pole post 230. The cover body covers the end face of the first pole post 220 or the second pole post 230 to respectively achieve welding protection for the first pole post 220 and the second pole post 230.

[0105] Furthermore, at least one of the number, position, or size of the first clamping hole 1011 and the second clamping hole 1021 may be different. For example, the first protective cover 101 may have two first clamping holes 1011, the second protective cover 102 may have three second clamping holes 1021, or the position of the first clamping hole 1011 on the first protective cover 101 may be different from the position of the second clamping hole 1021 on the second protective cover 102, or the size of the first clamping hole 1011 on the first protective cover 101 may be different from the size of the second clamping hole 1021 on the second protective cover 102.

[0106] In this way, by making at least one of the number, position, or size of the first clamping hole 1011 and the second clamping hole 1021 different, when the upper cover device 50 performs the upper protective cover operation (installing the first protective cover 101 to the first pole post 220 and installing the second protective cover 102 to the second pole post 230), and when the lower cover device 60 performs the lower protective cover operation (removing the first protective cover 101 on the first pole post 220 and the second protective cover 102 on the second pole post 230), the difference in the first clamping hole 1011 and the second clamping hole 1021 can prevent mistaken clamping and removal, thereby reducing the probability of misuse or mixing of protective covers due to misoperation.

[0107] According to some embodiments of this application, in the length direction of the first protective cover 101, the opening size of the first clamping hole 1011 gradually decreases, and in the length direction of the second protective cover 102, the opening size of the second clamping hole 1021 gradually decreases.

[0108] Specifically, the first protective cover 101 may have multiple first clamping holes 1011, and is configured such that, in the length direction of the first protective cover 101, the opening size at one end of the first clamping hole 1011 is larger than the opening size at the other end. The second protective cover 102 may have multiple second clamping holes 1021, and is configured such that, in the length direction of the second protective cover 102, the opening size at one end of the second clamping hole 1021 is larger than the opening size at the other end.

[0109] Furthermore, when the upper cover device 50 performs the upper protective cover action, and when the lower cover device 60 performs the lower protective cover action, the portions of the upper cover device 50 and the lower cover device 60 used to pick up the first protective cover 101 can extend into the end with the larger opening size of the first clamping hole 1011 and move to the end with the smaller opening size of the first clamping hole 1011 to achieve the clamping of the first protective cover 101. The portions of the upper cover device 50 and the lower cover device 60 used to pick up the second protective cover 102 can extend into the end with the larger opening size of the second clamping hole 1021. The upper cover device 50 and the lower cover device 60 are used to pick up the second protective cover 102. The upper cover device 50 can move to the end with the smaller opening of the second clamping hole 1021 to achieve the clamping of the second protective cover 102. The lower cover device 60 can move from the end with the smaller opening of the second clamping hole 1021 to the end with the larger opening of the second clamping hole 1021 to achieve the release of the second protective cover 102.

[0110] It is understandable that the clamping process and the picking and placing process are opposite motion processes, and after release, the first protective cover 101 and the second protective cover 102 can fall into the expected position under their own gravity, such as: being installed to the first pole post 220 or the second pole post 230, or being installed to the first positioning part 112 or the second positioning part 113.

[0111] Therefore, by making the first clamping hole 1011 and the second clamping hole 1021 gradually decrease in size along the length direction of the first protective cover 101 and the second protective cover 102, the difficulty of taking off and putting on the first protective cover 101 and the second protective cover 102 can be reduced, and the structure of the upper cover device 50 and the lower cover device 60 can be simplified to reduce costs.

[0112] See Figure 10 and Figure 11 As shown, according to some embodiments of this application, at least one of the number, position, and size of the positioning holes on the first protective cover 101 and the second protective cover 102 is different, and the structures of the first positioning part 112 and the second positioning part 113 are respectively adapted to the first positioning hole 1012 and the second positioning hole 1022.

[0113] Furthermore, the positioning hole provided on the first protective cover 101 is the first positioning hole 1012, and the positioning hole provided on the second protective cover 102 is the second positioning hole 1022, such that at least one of the number, position, or size of the first positioning hole 1012 and the second positioning hole 1022 is different. For example, the first protective cover 101 has two first positioning holes 1012, and the second protective cover 102 has three second positioning holes 1022, or the position of the first positioning hole 1012 on the first protective cover 101 is different from the position of the second positioning hole 1022 on the second protective cover 102, or the size of the first positioning hole 1012 on the first protective cover 101 is different from the size of the second positioning hole 1022 on the second protective cover 102. The first positioning part 112 and the second positioning part 113 are respectively provided with positioning pins, and the positioning pin on the first positioning part 112 is adapted to the first positioning hole 1012, and the positioning pin on the second positioning part 113 is adapted to the second positioning hole 1022.

[0114] In this way, by making at least one of the number, position, or size of the first positioning hole 1012 and the second positioning hole 1022 different, when the upper cover device 50 performs the upper protective cover operation (installing the first protective cover 101 to the first pole post 220 and installing the second protective cover 102 to the second pole post 230), and when the lower cover device 60 performs the lower protective cover operation (removing the first protective cover 101 on the first pole post 220 and the second protective cover 102 on the second pole post 230), the differentiated setting of the first positioning hole 1012 and the second positioning hole 1022 can prevent the first protective cover 101 from being assembled to the second positioning part 113 and the second protective cover 102 from being assembled to the first positioning part 112, thereby reducing the probability of misuse or mixing of protective covers due to misoperation.

[0115] It should be noted that the differentiated design of the first positioning hole 1012 and the second positioning hole 1022 can reduce the probability of misuse and mixed use of the protective cover due to misoperation. The differentiated design of the first clamping hole 1011 and the second clamping hole 1021 can also reduce the probability of misuse and mixed use of the protective cover due to misoperation. The difference is that one needs to cooperate with the picking structure on the upper cover device 50 and the lower cover device 60, and the other needs to cooperate with the first positioning part 112 and the second positioning part 113. The two are parallel technical concepts, and only one of them can be used, or both can be used. This application will not elaborate further.

[0116] like Figure 7 As shown, according to some embodiments of this application, the cover device 50 includes: a first gripper 52, a first drive unit 53 connected to the first gripper 52, a second gripper 54, and a second drive unit 55 connected to the second gripper 54. The first gripper 52 is used to grip the first protective cover 101, the second gripper 54 is used to grip the second protective cover 102, the first drive unit 53 is used to drive the first gripper 52 to move between a first position and a second position to pick up and put down the first protective cover 101, and the second drive unit 55 is used to drive the second gripper 54 to move between a third position and a fourth position to pick up and put down the second protective cover 102.

[0117] Specifically, the cover device 50 may include a cover platform 51, on which a first driving unit 53 and a second driving unit 55 are provided. The first driving unit 53 and the second driving unit 55 may be constructed as a linear motor or other driving structure to drive the first gripper 52 and the second gripper 54 to move, respectively. The first gripper 52 is adapted to extend into the first clamping hole 1011 to grip the first protective cover 101, and the second gripper 54 is adapted to extend into the second clamping hole 1021 to grip the second protective cover 102. There may be multiple first grippers 52 and second grippers 54. The number of first grippers 52 and second grippers 54 should be consistent with the number of batteries 200 carried in a single battery clamp 11. For example, if the battery clamp 11 can carry four batteries 200, then... There are four first grippers 52 and two second grippers 54. Multiple first grippers 52 switch synchronously between a first position and a second position, and multiple second grippers 54 switch synchronously between a third position and a fourth position. The second position is the location of the first positioning part 112, the first position is the location of the first terminal 220 of the battery 200, the fourth position is the location of the second positioning part 113, and the third position is the location of the second terminal 230 of the battery 200. The first protective cover 101 on the first positioning part 112 is gripped in the second position, the first protective cover 101 is released to the first terminal 220 in the first position, the second protective cover 102 on the second positioning part 113 is gripped in the fourth position, and the second protective cover 102 is released to the second terminal 230 in the third position.

[0118] Therefore, the top cover device 50 can automatically install the first protective cover 101 and the second protective cover 102 on the first terminal post 220 and the second terminal post 230, and remove them from the first positioning part 112 and the second positioning part 113. This reduces the installation difficulty of the first protective cover 101 and the second protective cover 102 and improves the installation efficiency, thereby improving the overall welding efficiency of the battery terminal welding line 100.

[0119] like Figure 8 As shown, according to some embodiments of this application, the lower cover device 60 includes: a third gripper 62, a third drive unit 63 connected to the third gripper 62, a fourth gripper 64, and a fourth drive unit 65 connected to the fourth gripper 64. The third gripper 62 is used to grip the first protective cover 101, the fourth gripper 64 is used to grip the second protective cover 102, the third drive unit 63 is used to drive the third gripper 62 to move between a fifth position and a sixth position to pick up and put down the first protective cover 101, and the fourth drive unit 65 is used to drive the fourth gripper 64 to move between a seventh position and an eighth position to pick up and put down the second protective cover 102.

[0120] Specifically, the lower cover device 60 may include a lower cover platform 61, on which a third drive unit 63 and a fourth drive unit 65 are provided. The third drive unit 63 and the fourth drive unit 65 may be constructed as a linear motor or other drive structure to drive the third gripper 62 and the fourth gripper 64 to move, respectively. The third gripper 62 is adapted to extend into the first clamping hole 1011 to clamp the first protective cover 101, and the fourth gripper 64 is adapted to extend into the second clamping hole 1021 to clamp the second protective cover 102. There may be multiple third grippers 62 and fourth grippers 64. The number of third grippers 62 and fourth grippers 64 should be consistent with the number of batteries 200 carried in a single battery clamp 11. For example, if the battery clamp 11 can carry four batteries 200, then... There are four third grippers 62 and four fourth grippers 64. Multiple third grippers 62 switch synchronously between the fifth and sixth positions, and multiple fourth grippers 64 switch synchronously between the seventh and eighth positions. The sixth position is the location of the first positioning part 112, the fifth position is the location of the first terminal 220 of the battery 200, the eighth position is the location of the second positioning part 113, and the seventh position is the location of the second terminal 230 of the battery 200. The first protective cover 101 on the second positioning part 113 is gripped at the sixth position, the first protective cover 101 is released to the first terminal 220 at the fifth position, the second protective cover 102 on the second positioning part 113 is gripped at the eighth position, and the second protective cover 102 is released to the second terminal 230 at the seventh position.

[0121] Therefore, the lower cover device 60 can automatically remove the first protective cover 101 and the second protective cover 102 from the first terminal post 220 and the second terminal post 230, and install them on the first positioning part 112 and the second positioning part 113. This reduces the difficulty of disassembling the first protective cover 101 and the second protective cover 102 and improves the disassembly efficiency, thereby improving the overall welding efficiency of the battery terminal welding line 100.

[0122] According to some embodiments of this application, the lower cover device 60 is further provided with a first replacement tray 66, which contains a first protective cover 101 and a second protective cover 102. The third drive unit 63 is also used to drive the third gripper 62 to move to the ninth position to pick up and put the first protective cover 101 to the first replacement tray 66. The fourth drive unit 65 is also used to drive the fourth gripper 64 to move to the tenth position to pick up and put the second protective cover 102 to the first replacement tray 66.

[0123] The lower cover platform 61 is also provided with a first replacement tray 66, which is used to store a certain number of first protective covers 101 and second protective covers 102. The third drive unit 63 can also drive the third gripper 62 to move to the ninth position, and the fourth drive unit 65 can also drive the fourth gripper 64 to move to the tenth position. The ninth and tenth positions correspond to the first replacement tray 66. When the third drive unit 63 drives the third gripper 62 to move to the ninth position, it can replace the first protective cover 101 on the first positioning part 112 with a clean first protective cover 101 in the first replacement tray 66 and place a dirty and unusable first protective cover 101 inside the first replacement tray 66. When the fourth drive unit 65 drives the fourth gripper 64 to move to the tenth position, it can replace a second protective cover 102 on the second positioning part 113 with a clean second protective cover 102 in the first replacement tray 66 and place a dirty and unusable second protective cover 102 inside the first replacement tray 66.

[0124] Of course, the third drive unit 63 and the fourth drive unit 65 drive the third gripper 62 and the fourth gripper 64 respectively. Alternatively, the first protective cover 101 and the second protective cover 102 can be replaced in groups. For example, there are four first positioning parts 112 and four second positioning parts 113 on each battery clamp 11. The number of first protective covers 101 and the number of second protective covers 102 remaining on the first replacement tray 66 can be four or eight or other integer multiples. A group of first protective covers 101 and a group of second protective covers 102 can be replaced at one time. This application does not impose specific limitations.

[0125] For example, the battery terminal welding line 100 in this application embodiment has three operating modes:

[0126] In the first mode, the upper cover device 50 installs the first protective cover 101 and the second protective cover 102 onto the first pole post 220 and the second pole post 230 respectively, and the welding device 30 performs welding. The lower cover device 60 removes the first protective cover 101 on the first pole post 220 to the first positioning part 112 and removes the second protective cover 102 on the second pole post 230 to the second positioning part 113.

[0127] In the second mode, the upper cover device 50 installs the first protective cover 101 and the second protective cover 102 onto the first pole post 220 and the second pole post 230 respectively, and the welding device 30 performs welding. It can identify and mark the condition of dirt on a certain first protective cover 101 or a certain second protective cover 102. The lower cover device 60 removes the first protective cover 101 on the first pole post 220 to the first positioning part 112 and removes the second protective cover 102 on the second pole post 230 to the second positioning part 113. It further places the dirty first protective cover 101 and / or second protective cover 102 into the first replacement tray 66 and places the replaced first protective cover 101 and / or second protective cover 102 onto the first positioning part 112 and / or the second positioning part 113 to complete the individual replacement of one or more protective covers.

[0128] In the third mode, the upper cover device 50 installs the first protective cover 101 and the second protective cover 102 onto the first pole post 220 and the second pole post 230 respectively, and the welding device 30 performs welding. The lower cover device 60 removes the first protective cover 101 on the first pole post 220 and places it onto the first replacement tray 66, and places the new first protective cover 101 in the first replacement tray 66 onto the first positioning part 112. The second protective cover 102 on the second pole post 230 is removed from the first replacement tray 66 and further placed onto the new second protective cover 102 in the first replacement tray 66 onto the second positioning part 113 to complete the replacement of a set of first protective covers 101 and a set of second protective covers 102.

[0129] In other words, by setting the first replacement tray 66, it is possible to replace the first protective cover 101 and / or the second protective cover 102 that are individually dirty, or to replace the first protective cover 101 and the second protective cover 102 as a group. When a single protective cover is dirty or the group of protective covers reaches the number of cycles threshold, the whole group is replaced to ensure that the protective cover is kept in a relatively clean state, thereby ensuring the welding quality.

[0130] Of course, the replacement logic of this application embodiment is not limited to this. In other embodiments, a second replacement tray 56 may be correspondingly provided on the cover device 50, and the replacement of the protective cover may be realized through the first driving part 53, the first gripper 52, the second driving part 55 and the second gripper 54. This application does not make specific limitations.

[0131] According to some embodiments of this application, the lower cover device 60 has a lower cover platform 61, on which a fixing structure is provided, and a first replacement tray 66 is detachably disposed on the fixing structure.

[0132] It is understood that the first replacement tray 66 is provided with multiple first protective covers 101 and second protective covers 102. When any one of the first protective covers 101 and second protective covers 102 on the first replacement tray 66 is replaced, the first replacement tray 66 can be removed by releasing the fixing structure. After all the first protective covers 101 and second protective covers 102 inside the first replacement tray 66 are replaced with clean protective covers, the first replacement tray 66 can be put back into the lower cover frame 61.

[0133] The first replacement tray 66 can be slidably mounted on the lower cover platform 61 via a slide rail or other structure, and can be detachably connected via a positioning pin, fastener, or other fixing structure. By loosening the fixing structure, the entire first replacement tray 66 can be disassembled, and a first replacement tray 66 pre-installed with a cleaning protective cover can be placed on the lower cover platform 61. This simplifies the maintenance process, reduces the number of downtimes and downtime, and improves the production efficiency of the battery terminal welding line 100.

[0134] like Figure 3 As shown, according to some embodiments of this application, the welding device 30 includes: a welding part 32, a fifth driving part 33, and a vision guidance unit 31. The fifth driving part 33 is connected to the welding part 32 and is used to drive the welding part 32 to move close to and around the first pole post 220 and the second pole post 230 to weld the first pole post 220 and the second pole post 230 to the battery casing. The vision guidance unit 31 is electrically connected to the fifth driving part 33 to control the movement of the fifth driving part 33.

[0135] Specifically, the welding unit 32 can be a laser welding unit. Guided by the vision guidance unit 31 and driven by the fifth drive unit 33, the laser welding unit moves to a suitable position on the battery casing and performs welding between the first electrode post 220 and the battery casing, and between the second electrode post 230 and the battery casing. The welding unit 32 and the vision guidance unit 31 can be coaxially arranged to improve welding accuracy. Thus, by driving the welding unit 32 to perform welding through the fifth drive unit 33 and guiding the position of the welding unit 32 through the vision guidance unit 31, the welding accuracy of the welding device 30 can be improved, thereby further enhancing the welding quality.

[0136] According to some embodiments of this application, the visual guidance unit 31 is also electrically connected to the third drive unit 63 and the fourth drive unit 65. The visual guidance unit 31 is used to identify the dirt status of the first protective cover 101 on the first positioning unit 112 and the second protective cover 102 on the second positioning unit 113.

[0137] In other words, in the second mode described above, the visual guidance unit 31 can identify and mark the dirt status of the first protective cover 101 located on the first pole post 220 and the second protective cover 102 located on the second pole post 230 during the welding process. The third gripper 62 and the fourth gripper 64 on the lower cover device 60 can replace the marked first protective cover 101 and / or second protective cover 102 that are marked as having dirt status.

[0138] In this way, not only can the first protective cover 101 and the second protective cover 102 be replaced when they are dirty, but there is no need to set up a separate visual recognition mechanism. Instead, it is linked with the visual guidance unit 31 of the welding device 30, which can further simplify the structure.

[0139] It should be noted that the visual guidance unit 31 is also electrically connected to the third drive unit 63 and the fourth drive unit 65. The visual guidance unit 31, the third drive unit 63, and the fourth drive unit 65 can all be electrically connected to the same controller. The controller further controls the movement of the third drive unit 63 or the fourth drive unit 65 based on the calibration status to realize the replacement of the protective cover. Alternatively, the visual guidance unit can be directly electrically connected to the third drive unit 63 and the fourth drive unit 65. The calibration signal is that a certain number of the multiple first protective covers 101 and a certain number of the multiple second protective covers 102 are dirty. When the third gripper 62 moves to the sixth position, the undirty first protective cover 101 is released. When it moves to the ninth position, the dirty first protective cover 101 is released. When the fourth gripper 64 moves to the eighth position, the undirty second protective cover 102 is released. When it moves to the tenth position, the dirty second protective cover 102 is released.

[0140] According to some embodiments of this application, the top cover device 50 is further provided with a second replacement tray 56, which contains a first protective cover 101 and a second protective cover 102. The first driving part 53 is also used to drive the first gripper 52 to move to the eleventh position to pick up the first protective cover 101 to the first positioning part 112. The second driving part 55 is also used to drive the second gripper 54 to move to the twelfth position to pick up and place the second protective cover 102 to the second positioning part 113.

[0141] Therefore, in the third mode described above, since it is necessary to remove all the protective covers on the first positioning part 112 and the second positioning part 113 of the multiple battery clamps 11 located on the battery terminal welding line 100, as the battery terminal welding line 100 advances, after all the protective covers are replaced, the battery clamps 11 that have moved to the position of the upper cover device 50 will not have the first protective cover 101 and the second protective cover 102. The first protective cover 101 and the second protective cover 102 are replenished by the second replacement tray 56, and the upper cover device 50 performs the upper cover action of the new first protective cover 101 and the second protective cover 102 to complete the overall systemic replacement of all protective covers.

[0142] It should be noted that the connection structure between the second replacement tray 56 and the upper cover platform 51 is the same as the structure between the lower cover platform and the first replacement tray 66, and will not be described in detail here.

[0143] The following is a detailed description of the three working modes of the embodiments of this application:

[0144] First mode (normal loop mode):

[0145] This mode is applicable to most production cycles without abnormalities, and achieves efficient and lossless circulation of the first protective cover 101 between the first positioning part 112 and the first pole post 220, and the second protective cover 102 between the first positioning part 112 and the second pole post 230.

[0146] 1. Initial state: The battery 200 is carried by the conveyor line and flows into the position of the cover device 50. At this time, the first protective cover 101 and the second protective cover 102 corresponding to the number of batteries 200 are respectively installed on the first positioning part 112 and the second positioning part 113 of the battery clamp 11.

[0147] 2. Upper Protective Cover Operation: The first gripper 52 moves to directly above the first positioning part 112 (second position), and the second gripper 54 moves to directly above the second protective cover 102 (fourth position). The first gripper 52 extends into the first clamping hole 1011, and the second gripper 54 extends into the second clamping hole 1021 to clamp the first protective cover 101 and the second protective cover 102 respectively. The first driving part 53 drives the first gripper 52 and the first protective cover 101 to move above the first terminal post 220 (first position), and the second driving part 55 drives the second gripper 54 and the second protective cover 102 to move above the second terminal post 230 (third position), thereby installing the first protective cover 101 onto the first terminal post 220 and the second protective cover 102 onto the second terminal post 230. The first positioning part 112 and the second positioning part 113 on the battery clamp 11 become empty.

[0148] 3. Welding process: The battery clamp 11 is transferred to the position of the welding device 30. The vision guidance unit 31 provides visual guidance to the welding part 32. Under the drive of the fifth drive unit 33, the welding part 32 performs welding of the first terminal 220 to the battery casing and the second terminal 230 to the battery casing. All metal spatter generated during the process is effectively blocked by the first protective cover 101 and the second protective cover 102.

[0149] 4. Lower Protective Cover Operation: After welding is completed, the battery 200 moves to the position of the lower cover device 60. The third gripper 62 moves above the first terminal post 220, and the fourth gripper 64 moves above the second terminal post 230. They move toward the first terminal post 220 and the second terminal post 230 respectively (fifth position and seventh position) to remove the first protective cover 101 on the first terminal post 220 and the second protective cover 102 on the second terminal post 230. The third gripper 62 and the first protective cover 101 move above the first positioning part 112 (sixth position), and the fourth gripper 64 and the second protective cover 102 move above the second positioning part 113 (eighth position). The first protective cover 101 and the second protective cover 102 are placed on the first positioning part 112 and the second positioning part 113 respectively.

[0150] 5. Reset action: The battery clamp 11, the first protective cover 101 and the second protective cover 102 flow together to the starting point of the battery terminal welding line 100 to complete a complete battery terminal welding cycle.

[0151] Second mode (single replacement mode):

[0152] It should be noted that the second mode is triggered by the vision guidance unit 31 and is used to replace individual protective covers (first protective cover 101 or second protective cover 102) contaminated by welding slag online and in real time, ensuring the cleanliness of the circulation system.

[0153] 1. Contamination Detection and Decision-Making: At the location of the welding device 30, the vision guidance unit 31 can compare the area, size, or quantity of weld slag coverage with a preset threshold based on image processing algorithms. If the contamination level exceeds the threshold, the protective cover is determined to be in an "NG" state, and this calibration signal (containing the battery ID and the polarity information of the NG protective cover) is sent to the controller (central controller or separately set microcontroller).

[0154] 2. Disposal of NG Protective Covers: When the battery 200 is transferred to the position of the lower cover device 60, the third gripper 62 and the fourth gripper 64 first remove all the first protective covers 101 and the second protective covers 102 respectively. For protective covers marked "OK", the third gripper 62 or the fourth gripper 64 directly places them back onto the first positioning part 112 or the second positioning part 113. For protective covers marked "NG", the third gripper 62 or the fourth gripper 64 will not place them back onto the first positioning part 112 or the second positioning part 113, but will move them to the ninth or tenth position on the first replacement tray 66 (corresponding to the first protective cover area and the second protective cover area on the first replacement tray 66 respectively) and place the contaminated protective cover in.

[0155] 3. Replacement of OK Protective Cover: After placing the NG protective cover, the third gripper 62 or the fourth gripper 64 picks up a clean OK protective cover of the same polarity from the first replacement tray 66. The third gripper 62 or the fourth gripper 64 then returns to the sixth or eighth position, installing the OK protective cover onto the corresponding empty positioning part. This allows for seamless and precise replacement of the contaminated cover within a single cycle, without affecting the normal production line cycle.

[0156] It should be noted that the interior of the first replacement tray 66 can be divided into multiple areas, including at least a first waste area, a second waste area, a first protective cover area, and a second protective cover area, for placing NG protective covers and retrieving OK protective covers.

[0157] Third mode (complete machine replacement mode):

[0158] The third mode is used for planned maintenance, enabling batch and rapid replacement of all protective covers on the entire battery terminal welding line 100 via a one-click command.

[0159] 1. Command Issuance: Operators can select the "Replace Protective Cover" function through the human-machine interface and confirm execution. The battery terminal welding line 100 can be set to automatically enter maintenance mode after welding of the current cycle battery 200 is completed.

[0160] 2. Cleaning Operation: Remove all the first protective cover 101 and the second protective cover 102 from the battery clamp 11. The removed protective covers are placed in the first replacement tray 66 for centralized cleaning or disposal. Of course, the second replacement tray 56 can also assist in the disassembly of the first protective cover 101 and the second protective cover 102 at this time, that is, the first protective cover 101 and the second protective cover 102 that have been transferred to the battery clamp 11 at the location of the upper cover device 50 are placed in the second replacement tray 56.

[0161] 3. Supplementary operation: As the battery terminal welding line 100 advances, the battery clamp 11, whose protective cover has been emptied, is transferred to the position of the upper cover device 50. The upper cover device 50 accurately installs the OK protective cover in the second replacement tray 56 that it has grabbed onto each empty first positioning part 112 and second positioning part 113.

[0162] In this way, through the coordination of the upper cover device 50 and the lower cover device 60 and the cooperation of the conveyor line, this process can be carried out efficiently in an "assembly line" operation mode. After the replacement process is completed, it returns to the first mode. The whole process is completed in a few minutes, which greatly improves the maintainability of the battery terminal welding line 100.

[0163] like Figure 1 As shown, according to some embodiments of this application, the welding device 30 includes: a first welding module 30a and a second welding module 30b. The first welding module 30a and the second welding module 30b are arranged opposite to each other in a first direction and are respectively used to weld the first pole post 220 to the end cap 210 and the second pole post 230 to the end cap 210. The upper cover device 50 is arranged opposite to the first welding module 30a in a second direction, and the lower cover device 60 is arranged opposite to the second welding module 30b in a second direction. The upper cover device 50 and the lower cover device 60 are located on the same side of the welding device 30 in the second direction, and the first direction and the second direction have an angle.

[0164] Specifically, the first welding module 30a and the second welding module 30b are used to weld the first pole post 220 to the end cap 210 and the second pole post 230 to the end cap 210, respectively. The parallel welding of the two modules can further improve the welding efficiency.

[0165] Of course, the embodiments of this application are not limited to this. In other embodiments, there are multiple batteries 200 in the battery clamp 11. The first welding module 30a can weld a portion of the batteries 200 in the battery clamp 11, and the second welding module 30b can weld another portion of the batteries 200 in the battery clamp 11. For example, if there are four batteries 200 in the battery clamp 11, the first welding module 30a can weld the first and third batteries, and the second welding module 30b can weld the second and fourth batteries. This can also improve welding efficiency. In embodiments where the first welding module 30a welds the first terminal 220 and the second welding module 30b welds the second terminal 230, and in embodiments where the first welding module 30a and the second welding module 30b weld a portion of the batteries respectively, the multiple welding parts 32 can avoid each other, thereby improving welding accuracy and avoiding interference problems.

[0166] Furthermore, both the first welding module 30a and the second welding module 30b are integrated with a high-resolution vision guidance unit 31 (CCD vision system). Before welding, the cleanliness of the first protective cover 101 and the second protective cover 102 can be detected. If serious dirt is found, an alarm can be issued and welding can be prohibited. If the cleanliness of the first protective cover 101 and the second protective cover 102 is not a problem, the weld seam is addressed accordingly, and the relative position of the first pole post 220 or the second pole post 230 is accurately identified through image processing. After compensating for the tolerance, the welding path coordinate offset is generated, and then the welding part 32 emits a welding laser. The welding part 32 is driven by the fifth drive part 33 (which can be a linear motor). According to the vision-guided welding path, it performs interpolation motion to form a uniform and well-sealed continuous weld seam.

[0167] The first welding module 30a and the second welding module 30b are arranged opposite each other in the first direction. The upper cover device 50 and the lower cover device 60 are located on the same side of the welding device 30 in the second direction. The upper cover device 50 and the lower cover device 60 are also arranged opposite each other in the first direction. This makes the overall arrangement of the welding device 30, the upper cover device 50 and the lower cover device 60 more compact, which can improve the space occupation of the battery terminal welding line 100 and make the overall battery terminal welding more compact.

[0168] According to some embodiments of this application, the magnetic drive rail 12 includes: a rail and a stator winding array arranged along the extension direction of the rail, and a permanent magnet that drives the stator winding array magnetically is embedded on the clamp body 111 of the battery clamp 11.

[0169] It should be noted that in the existing technology, the positioning and transfer structure of the end cap 210 and the battery 200 casing requires a secondary positioning mechanism. First, the end cap 210 needs to be moved to the workstation via a coarse positioning conveyor line, and then mechanisms such as cylinders and servo modules are used for lifting, clamping, and centering to achieve the welding precision required and to align the end cap 210 with the battery 200 end cap 210. This method is complex, occupies a large space, and its repeatability and cycle time are easily affected by mechanical wear.

[0170] This application employs a feeding device 20 to directly connect the assembled battery casing and end cap 210. After connecting to the battery clamp 11, the battery clamp 11 moves under the magnetic action of the stator winding array of the magnetic drive rail 12 and its own permanent magnets, achieving higher movement accuracy and enabling micron-level positioning at any position without the need for a secondary positioning mechanism. This not only simplifies the mechanical structure and improves reliability but also provides a feasible foundation for achieving high-speed, high-cycle production.

[0171] The stator winding array on the magnetic drive rail 12 moves in coordination with the permanent magnet, which can ensure higher reliability and stability during the synchronous movement of the battery 200 and the battery clamp 11. There is no relative displacement during high-speed movement. If the central control system can implement feedback on the position of the permanent magnet (i.e., the position of the battery clamp 11) through a high-resolution magnetic grating ruler, it can achieve micron-level positioning. This allows the battery clamp 11 and the battery 200 to move quickly between multiple positions with higher positioning accuracy. It can achieve high-cycle, high-precision transportation and effectively simplify the structure of the battery terminal welding line 100.

[0172] According to some embodiments of this application, the fixture body 111 is further provided with a positioning block and an adsorption part. The positioning block is used to position the battery 200, and the adsorption part is used to adsorb the battery 200 under negative pressure.

[0173] Specifically, one of the positioning block and the adsorption part can be used to fix the battery casing and the other to fix the end cap 210, so as to ensure that there is no relative displacement between the battery casing and the end cap 210 during the movement of the battery clamp 11, and to ensure that there is no relative movement before the battery 200 moves as a whole to the flipping unloading device 40. This can improve the welding accuracy and welding quality of the end cap 210 and the terminal post, and avoid displacement between the end cap 210 and the battery casing. It can also improve the welding accuracy between the end cap 210 and the battery casing in the future, and improve the overall processing accuracy and processing quality of the "battery assembly line".

[0174] According to some embodiments of this application, the guide rail is annular so that the battery clamp 11 is adaptable to switch between a head position, a top cover position, a welding position, a bottom cover position, and a tail position.

[0175] Specifically, the guide rail is circular and includes a first segment and a second segment extending in a first direction and arranged opposite to each other in a second direction, a third segment and a fourth segment extending in the second direction and arranged opposite to each other in the first direction. One end of the first segment is defined as the beginning position, and the same side end of the second segment is defined as the end position. The first welding module 30a and the second welding module 30b can be located on the third segment (e.g., at both ends of the third segment). The upper cover device 50 is located in the first segment, and the lower cover device 60 and the conveying module 41 can all be located in the second segment.

[0176] Therefore, by setting up a circular guide rail, multiple battery clamps 11 can flow on the circular guide rail, which can improve production efficiency. Multiple battery clamps 11 can be reserved on the guide rail as buffers, which can also reduce the impact of downtime and ensure stable and reliable production cycle. At the same time, the arrangement of the feeding device 20, the upper cover device 50, the welding device 30, the lower cover device 60 and the flipping feeding device 40 can be more compact, occupy less space and reduce the difficulty of arrangement.

[0177] like Figure 1As shown, according to some embodiments of this application, the battery terminal welding line 100 further includes: a detection device 70, which is located downstream of the lower cover device 60 and upstream of the transport module 41. The detection device 70 is used to detect the battery 200 that has been welded on the battery clamp 11 and to calibrate the battery 200.

[0178] Specifically, the inspection device 70 can employ a re-inspection system combining 2D vision and 3D laser profilometer. 2D vision is used to detect surface defects in the weld, such as abnormal color, bursts, and cracks, while the 3D profilometer is used to quantify key dimensions of the weld, such as penetration depth, reinforcement height, and width, to determine whether there are defects such as collapse or protrusion. It can also compare the collected data with preset process standards to automatically determine whether the welding quality of each battery 200 is "OK" or "NG," and bind the result to the ID of the battery fixture 11 where the battery 200 is located in real time, so as to achieve the calibration of the battery 200.

[0179] In this way, the welding completed battery 200 can be inspected by the detection device 70 to determine whether the welding completed battery 200 meets the welding standards, so as to facilitate the timely removal of NG batteries and improve the reliability of the battery terminal welding line 100.

[0180] like Figure 6 As shown, according to some embodiments of this application, the flipping unloading device 40 further includes a sorting module 43, which is located downstream of the flipping module 42. The sorting robot 431 of the sorting module 43 is used to sort the labeled batteries 200 to the unloading logistics line or the defective recycling line.

[0181] Specifically, the "battery assembly line" includes a loading line, an unloading logistics line, and a defective recycling line. The loading line can transport the assembled battery casing, electrode assembly, end cap 210, first terminal 220, and second terminal 230 to the location of the loading device 20. After the loading device 20 completes the connection, the terminal and end cap 210 are welded in the battery terminal welding line 100 of this application. The sorting module 43 can move the OK batteries to the unloading logistics line based on the calibration of the detection device 70 and transport them to the next process for welding the battery casing and end cap 210. The defective recycling line is used to recycle NG batteries.

[0182] In this process, the sorting robot 431 picks up the batteries 200 that have completed their posture adjustment from the flipping module 42 and can receive calibration signals from the detection device 70. For OK batteries, the sorting robot 431 smoothly places them onto the unloading logistics line for transfer to the next process; for NG batteries, the sorting robot 431 places them onto a dedicated defective recycling line, achieving automatic separation of defective batteries 200. The entire process is fully automated, ensuring accurate correspondence between product flow and information flow.

[0183] It is understandable that, such as Figure 6 As shown, the sorting module 43 may include two sorting robots 431. One sorting robot 431 is used to pick up OK batteries and the other sorting robot is used to pick up NG batteries, and they move to the unloading logistics line and the defective recycling line respectively. Of course, this application is not limited to this. In some other embodiments, only one sorting robot 431 may be set. The sorting robot 431 switches between multiple positions to pick up batteries with the correct posture, place OK batteries to the unloading logistics line, and place NG batteries to the defective recycling line.

[0184] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is 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.

[0185] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery terminal welding wire, characterized in that, include: A magnetic drive conveyor belt (10) has a battery clamp (11) and a magnetic drive rail (12), the magnetic drive rail (12) defining the flow direction of the battery clamp (11) and driving the battery clamp (11) to move. The feeding device (20) is located on the periphery of the magnetic drive conveyor belt (10) and is used to connect the battery (200) to the battery clamp (11) located at the head end of the magnetic drive guide rail (12); Welding device (30), located downstream of the feeding device (20), is used to weld the electrode post to the battery (200). A flipping unloading device (40) is located downstream of the welding device (30). The flipping unloading device (40) has a flipping module (42) for removing the battery (200) in the battery clamp (11) from the magnetic drive conveyor belt (10) and flipping the welded battery (200).

2. The battery terminal welding wire according to claim 1, characterized in that, The flipping and unloading device (40) includes: a transport module (41) located at the tail end of the magnetic drive rail (12), the transport module (41) having an unloading robot (411) for removing the battery (200) from the battery clamp (11), the battery clamp (11) being adapted to move from the tail end to the head end under the drive of the magnetic drive rail (12).

3. The battery terminal welding wire according to claim 2, characterized in that, The flipping module (42) includes: at least one flipping table (421), on which a flipping clamp (422) and a bottom tray (423) are provided. The flipping clamp (422) is adapted to flip the battery (200) located in the flipping clamp (422), and the bottom tray (423) is located below the flipping clamp (422) and is adapted to support the battery (200).

4. The battery terminal welding wire according to claim 1, characterized in that, The battery terminal welding line further includes: an upper cover device (50) and a lower cover device (60). The battery clamp (11) includes: a clamp body (111), a first positioning part (112) and a second positioning part (113) located on both sides of the clamp body (111), a first protective cover (101) detachably disposed on the first positioning part (112), and a second protective cover (102) detachably disposed on the second positioning part (113). The upper cover device (50) is adapted to be picked up by the first positioning part (112) from the first protective cover. The cover (101) is installed on the first terminal (220) of the battery (200), and the second cover (102) is taken from the second positioning part (113) and installed on the second terminal (230) of the battery (200). The lower cover device (60) is adapted to remove the first cover (101) from the first terminal (220) and install it on the first positioning part (112), and remove the second cover (102) from the second terminal (230) and install it on the second positioning part (113).

5. The battery terminal welding wire according to claim 4, characterized in that, The welding device (30) includes a first welding module (30a) and a second welding module (30b). The first welding module (30a) and the second welding module (30b) are arranged opposite to each other in a first direction and are used to weld the first pole post (220) to the end cap (210) and the second pole post (230) to the end cap (210), respectively. The upper cover device (50) is arranged opposite to the first welding module (30a) in a second direction, and the lower cover device (60) is arranged opposite to the second welding module (30b) in a second direction. The upper cover device (50) and the lower cover device (60) are located on the same side of the welding device (30) in the second direction, and the first direction and the second direction have an angle.

6. The battery terminal welding wire according to claim 1, characterized in that, The magnetic drive rail (12) includes: a rail and a stator winding array arranged along the extension direction of the rail. The clamp body (111) of the battery clamp (11) is embedded with a permanent magnet that drives the stator winding array magnetically.

7. The battery terminal welding wire according to claim 6, characterized in that, The clamp body (111) is also provided with a positioning block and an adsorption part. The positioning block is used to position the battery (200), and the adsorption part is used to adsorb the battery (200) under negative pressure.

8. The battery terminal welding wire according to claim 6, characterized in that, The guide rail is circular, so that the battery clamp (11) is suitable for switching between the head position, the top cover position, the welding position, the bottom cover position and the tail position.

9. The battery terminal welding wire according to claim 2, characterized in that, The battery terminal welding line also includes a detection device (70), which is located downstream of the lower cover device (60) and upstream of the transport module (41). The detection device (70) is used to detect the battery (200) that has been welded on the battery clamp (11) and to calibrate the battery (200).

10. The battery terminal welding wire according to claim 9, characterized in that, The flipping unloading device (40) further includes a sorting module (43), which is located downstream of the flipping module (42). The sorting robot (431) of the sorting module (43) is used to sort the calibrated batteries (200) to the unloading logistics line or the defective recycling line.

11. The battery terminal welding wire according to claim 10, characterized in that, The feeding device (20), the flipping module (42), and the sorting module (43) are arranged sequentially in the second direction.

12. The battery terminal welding wire according to claim 1, characterized in that, The feeding device (20) includes a feeding robot (21), which is used to connect the battery (200) on the feeding line to the battery clamp (11) located at the first end position.

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