Sealing nail welding line for cylindrical battery

Abstract

The application relates to the battery processing technical field, and discloses a sealing nail welding line for cylindrical batteries, a first conveying device is configured to run for a first set time to convey cylindrical batteries to be cleaned, and is stopped for a second set time to clean the liquid injection holes of the cylindrical batteries to be cleaned, a pre-welding device is located downstream of the cleaning device, the pre-welding device comprises a magnetic drive conveying belt, the magnetic drive conveying belt is suitable for receiving the cylindrical batteries cleaned by the cleaning device, and the pre-welding device is used for pre-welding sealing nails on the cylindrical batteries cleaned, a full-welding device is located downstream of the cleaning device, the full-welding device is provided with a second conveying device, the second conveying device is configured to run for a first set time to convey the cylindrical batteries pre-welded, and is stopped for a second set time to full-weld the liquid injection hole areas of the cylindrical batteries pre-welded. Therefore, the laser utilization rate can be improved, the processing cost can be reduced, the space occupation can be reduced, and the safety and reliability of the sealing nail welding line as a whole can be improved.

Description

Technical Field

[0001] This application relates to the field of cylindrical battery processing technology, and in particular to a sealing nail welding line for a cylindrical battery. Background Technology

[0002] In related technologies, after liquid injection formation is completed during the production of cylindrical batteries, the liquid injection holes of the cylindrical batteries need to be sealed. However, the laser utilization rate of the welding equipment is low during the sealing nail welding process, the liquid injection hole cleaning process, and the full welding process of the liquid injection hole. At the same time, the placement of sealing nails in the liquid injection hole area is difficult and has low precision, which also affects production efficiency and production cycle. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, one objective of this application is to provide a sealing nail welding line for cylindrical batteries, which has higher laser utilization and higher nailing precision, thereby improving production efficiency and cycle time.

[0004] This application discloses a sealing nail welding line for cylindrical batteries, comprising: a cleaning device, a pre-welding device, and a full-welding device. The cleaning device has a first conveying device configured to operate for a first set time to convey cylindrical batteries to be cleaned, and to pause for a second set time to allow the electrolyte filling holes of the cylindrical batteries to be cleaned to be cleaned. The pre-welding device is located downstream of the cleaning device and includes a magnetic drive conveyor belt adapted to receive cylindrical batteries cleaned by the cleaning device. The pre-welding device is used to pre-weld sealing nails onto the cleaned cylindrical batteries. The full-welding device is located downstream of the cleaning device and has a second conveying device configured to operate for a first set time to convey pre-welded cylindrical batteries, and to pause for a second set time to allow the electrolyte filling hole area of ​​the pre-welded cylindrical batteries to be fully welded. The first conveying device and the second conveying device cyclically drive the cylindrical batteries to move and stop according to the first set time and the second set time.

[0005] According to the sealing nail welding line of the present application embodiment, the cleaning equipment and pre-welding equipment that can be stopped and started can improve laser utilization, reduce processing costs, and achieve compact and miniaturized settings of the cleaning equipment and pre-welding equipment, reducing space occupation. The pre-welding equipment using magnetic drive conveyor belt can not only be adapted to the high production cycle of the cleaning equipment and pre-welding equipment, but also has higher safety, which can improve the overall safety and reliability of the sealing nail welding line.

[0006] According to some embodiments of this application, the sealing nail welding line further includes: a plate chain line, which is disposed between the cleaning equipment and the pre-welding equipment, and between the pre-welding equipment and the full-welding equipment, and is suitable for buffering cylindrical batteries at different stages on the plate chain line.

[0007] In the above technical solution, on the one hand, by setting up the plate chain line, cylindrical batteries at different stages can be buffered, so that if any one of the cleaning equipment, full welding equipment and pre welding equipment fails, the other equipment can still continue to process cylindrical batteries based on the buffered cylindrical batteries. This can avoid the overall failure of the sealing nail welding line to a certain extent, and improve the stability and reliability of the operation. On the other hand, based on the flexible layout of the plate chain line, multiple modular devices can be connected in series, which can avoid space redundancy, improve space occupation, and simplify the structure.

[0008] According to some embodiments of this application, the plate chain line includes: a feeding line and a discharging line. The feeding line has a main feeding port and at least one feeding outlet. The feeding outlet is connected to a first feeding device of a cleaning device. The discharging line has a main discharging port and at least one discharging inlet. The discharging inlet is connected to a first unloading device of a welding device.

[0009] In the above technical solution, by setting up feeding lines and discharging lines, multiple cleaning equipment and multiple full welding equipment can be set up in parallel, which can further increase the production quantity of the sealing nail welding line per unit time, thereby improving production efficiency. In addition, setting up multiple sets of equipment in parallel can also improve space occupation and achieve compact setup.

[0010] According to some embodiments of this application, the plate chain line further includes: at least one feeding line and at least one unloading line, wherein the feeding inlet of the feeding line is connected to the second unloading device of the cleaning equipment, the feeding outlet of the feeding line is connected to the second feeding device of the pre-welding equipment, the unloading inlet of the unloading line is connected to the third unloading device of the pre-welding equipment, and the unloading outlet of the unloading line is connected to the third feeding device of the full-welding equipment.

[0011] In the above technical solution, the number of feeding and unloading lines can be arranged according to the number of pre-welding equipment to form multiple cylindrical battery processing paths in parallel. Multiple sets of cleaning equipment, pre-welding equipment and full welding equipment each form a cylindrical battery processing path, which can further realize the compact layout of the sealing nail welding line and increase the output per unit time of the sealing nail welding line, thereby improving production efficiency.

[0012] According to some embodiments of this application, at least the second feeding device and the third unloading device are constructed as impellers.

[0013] In the above technical solution, the plate chain line is connected to the impeller, and the cylindrical batteries on the plate chain line can be divided into fixed intervals by the impeller. The connection between the mover of the magnetic drive conveyor belt and the cylindrical batteries is similar to the meshing of gears and racks, which makes the connection structure between the impeller and the magnetic drive conveyor belt simple, reliable and efficient.

[0014] According to some embodiments of this application, the pre-welding equipment includes: a nailing device and a cover device, the cover device being located upstream of the nailing device and adapted to cover the end of the cylindrical battery having an injection hole before nailing the cylindrical battery.

[0015] In the above technical solution, before attaching the nail, the protective cover is first installed on the end of the cylindrical battery with the liquid injection hole. Before the sealing nail is pre-welded, the protective cover effectively insulates and protects the inside of the cylindrical battery, avoiding damage to the cylindrical battery due to current leakage or short circuit during the pre-welding process, thereby improving the pre-welding safety and quality of the cylindrical battery.

[0016] According to some embodiments of this application, the pre-welding equipment further includes a pre-welding device and a lower cover device, wherein the pre-welding device and the lower cover device are sequentially disposed downstream of the upper nail device, and the lower cover device is adapted to remove the protective cover located on the cylindrical battery after the pre-welding of the cylindrical battery is completed.

[0017] In the above technical solution, the upper cover device, the upper nailing device, the pre-welding device, and the lower cover device are sequentially arranged on the flow path of the cylindrical battery in the pre-welding equipment. This ensures that the protective cover is applied before nailing and the protective cover is applied after pre-welding. This ensures that even if the sealing nail is mispositioned, poorly welded, or even moves during the nailing and pre-welding processes, it will not cause a short circuit in the cylindrical battery. This further improves the safety of the pre-welding equipment and reduces safety hazards.

[0018] According to some embodiments of this application, the cleaning equipment includes: multiple cleaning components and multiple cleaning clamp assemblies. The cleaning components are arranged circumferentially along the first conveying device. The cleaning clamp assembly includes a cleaning clamp and a first lifting member. The cleaning clamp is used to hold the cylindrical battery to be cleaned, and the first lifting member is used to eject the cylindrical battery from the cup. The full welding equipment includes: multiple full welding components and multiple full welding clamp assemblies. The full welding components are arranged circumferentially along the second conveying device. The full welding clamp assembly includes a full welding clamp and a second lifting member. The full welding clamp is used to hold the cylindrical battery to be cleaned, and the second lifting member is used to eject the cylindrical battery from the cup.

[0019] In the above technical solution, during the process of conveying cylindrical batteries to be cleaned by the first conveying device, the cleaning fixture assembly can couple the battery loading action with the auxiliary action before battery cleaning, and the battery unloading action with the auxiliary action after battery cleaning. During the process of conveying cylindrical batteries to be fully welded by the second conveying device, the full welding fixture assembly can couple the battery loading action with the auxiliary action before full welding, and the battery unloading action with the auxiliary action after full welding. This can reduce processing time, speed up production cycle, improve laser utilization, reduce costs, and improve production efficiency.

[0020] According to some embodiments of this application, the first conveying device includes: a first turret and a first turntable, a plurality of cleaning clamp assemblies are spaced apart on the first turntable along the circumference of the first turntable, the first turret is sleeved on the first turntable, the first turret has a first cam groove and a second cam groove, the first cam groove is used to drive the cleaning clamps to clamp the cylindrical battery, and the second cam groove is used to drive the first lifting member; the second conveying device includes: a second turret and a second turntable, a plurality of full-welding clamp assemblies are spaced apart on the second turntable along the circumference of the second turntable, the second turret is sleeved on the second turntable, the second turret has a third cam groove and a fourth cam groove, the third cam groove is used to drive the full-welding clamps to clamp the cylindrical battery, and the fourth cam groove is used to drive the second lifting member.

[0021] In the above technical solution, by coordinating the first turntable, the first turret, and the cleaning fixture assembly, the loading action of cylindrical batteries is coupled with the auxiliary action before cleaning, and the unloading action of batteries is coupled with the auxiliary action after cleaning, thereby simplifying the production cycle and improving production efficiency. At the same time, the cam turret layout can improve the space occupation of the cleaning equipment, reduce the space requirements of the factory, and reduce the layout cost. By coordinating the second turntable, the second turret, and the full welding fixture assembly, the loading action of cylindrical batteries is coupled with the auxiliary action before full welding, and the unloading action of batteries is coupled with the auxiliary action after full welding, thereby simplifying the production cycle and improving production efficiency. At the same time, the cam turret layout can improve the space occupation of the full welding equipment, reduce the space requirements of the factory, and reduce the layout cost.

[0022] According to some embodiments of this application, the cleaning equipment further includes a first cam divider, a first conveying device connected to the first cam divider, and a cleaning fixture assembly divided into multiple cleaning fixture groups in the circumference of the first turntable. Each cleaning fixture group contains at least two cleaning fixture assemblies, and the angular interval between two adjacent cleaning fixture groups is a first included angle. The first cam divider is used to drive the first conveying device to move according to the first included angle. The full welding equipment further includes a second cam divider, a second conveying device connected to the second cam divider, and a full welding fixture assembly divided into multiple full welding fixture groups in the circumference of the second turntable. Each full welding fixture group contains at least two full welding fixture assemblies, and the angular interval between two adjacent full welding fixture groups is the first included angle. The second cam divider is used to drive the second conveying device to move according to the first included angle.

[0023] In the above technical solution, by setting a first cam divider and a second cam divider, intermittent processing of the cleaning equipment and the full welding equipment can be realized respectively. At the same time, the time consumption of the cylindrical battery processing sequence can be greater than the time consumption of the processing preparation sequence, so as to improve production efficiency, increase laser utilization, and reduce costs.

[0024] According to some embodiments of this application, the number of cleaning components is consistent with the number of cleaning fixture components in the cleaning fixture group, and each cleaning fixture group is provided with one cleaning component, or each cleaning fixture group is provided with one cleaning component, and the last cleaning fixture group is not provided with a cleaning component; the number of full welding components is consistent with the number of full welding fixture components in the full welding fixture group, and each full welding fixture group is provided with one full welding component, or each full welding fixture group is provided with one full welding component, and the last full welding fixture group is not provided with a full welding component.

[0025] In the above technical solution, each cleaning fixture group and each full welding fixture group can achieve the cleaning of all the cylindrical batteries to be cleaned and the full welding of all the cylindrical batteries to be fully welded within the group after multiple first predetermined times and multiple second predetermined times. During the overall flow of the first conveying device and the second conveying device, the cleaning of multiple cylindrical batteries to be cleaned and the full welding of multiple cylindrical batteries to be fully welded can be achieved simultaneously, which can further improve the cleaning efficiency of the cleaning equipment and the full welding efficiency of the full welding equipment.

[0026] According to some embodiments of this application, the first cam groove has a first trajectory segment and a second trajectory segment, the height difference between the second trajectory segment and the first trajectory segment is consistent with the movement stroke of the first lifting member, and the extension angle of the first trajectory segment is less than or equal to the first included angle; the second cam groove has a third trajectory segment and a fourth trajectory segment, the height difference between the fourth trajectory segment and the third trajectory segment is consistent with the movement stroke of the cleaning fixture, and the extension angle of the third trajectory segment is less than or equal to the first included angle.

[0027] In the above technical solution, the extension angles of the first trajectory segment and the third trajectory segment can be made more reasonable. During the overall movement and stopping process, the cleaning fixture group containing the cylindrical battery to be cleaned can always maintain the state of the cylindrical battery being clamped. The cylindrical battery after cleaning and the cylindrical battery to be cleaned can be loaded and unloaded and clamped and released synchronously within a first included angle range, thereby improving the working stability and reliability of the cleaning equipment.

[0028] According to some embodiments of this application, the third cam groove has a fifth trajectory segment and a sixth trajectory segment, the height difference between the fifth trajectory segment and the sixth trajectory segment is consistent with the movement stroke of the second lifting member, and the extension angle of the fifth trajectory segment is less than or equal to the first included angle; the fourth cam groove has a seventh trajectory segment and an eighth trajectory segment, the height difference between the seventh trajectory segment and the eighth trajectory segment is consistent with the movement stroke of the full welding fixture, and the extension angle of the seventh trajectory segment is less than or equal to the first included angle.

[0029] In the above technical solution, the extension angles of the fifth trajectory segment and the seventh trajectory segment can be made more reasonable. During the overall movement and stopping process, the full welding fixture group where the cylindrical battery to be fully welded is located can always maintain the state of the cylindrical battery being clamped. The cylindrical battery after full welding and the cylindrical battery to be fully welded can be loaded and unloaded and clamped and released synchronously within a first included angle range, thereby improving the working stability and reliability of the full welding equipment.

[0030] According to some embodiments of this application, multiple cleaning fixture components within each cleaning fixture group are defined as the first fixture to the Nth fixture in sequence. The cleaning component corresponding to the previous cleaning fixture group is either adjacent to the first fixture in the group or located away from the first fixture in the group compared to the cleaning component corresponding to the next cleaning fixture group. Similarly, multiple full welding fixture components within each full welding fixture group are defined as the first fixture to the Nth fixture in sequence. The full welding component corresponding to the previous full welding fixture group is either adjacent to the first fixture in the group or located away from the first fixture in the group compared to the full welding component corresponding to the next full welding fixture group.

[0031] In the above technical solution, the same group of cylindrical batteries can be cleaned sequentially when passing through the first turntable, and fully welded sequentially when passing through the second turntable. Multiple groups of cylindrical batteries can be processed simultaneously on the first or second turntable, so that more cylindrical batteries can be processed at the same time, thereby improving production efficiency. Furthermore, the sequential processing of multiple cylindrical batteries within multiple groups can reduce the probability of interference and improve processing accuracy.

[0032] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0033] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0034] Figure 1 This is a schematic diagram of the sealing nail welding line according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of a cleaning device according to an embodiment of this application from one angle;

[0036] Figure 3 This is a schematic diagram of the cleaning device according to an embodiment of this application from another angle;

[0037] Figure 4 This is a schematic diagram of a full-welding device according to an embodiment of this application;

[0038] Figure 5This is a schematic diagram of the full-welding equipment according to an embodiment of this application from another angle;

[0039] Figure 6 This is a schematic diagram of a pre-welding device according to an embodiment of this application;

[0040] Figure 7 This is a schematic diagram showing the arrangement of the cleaning assembly or the full soldering assembly according to the first embodiment of this application;

[0041] Figure 8 This is a schematic diagram showing the arrangement of the cleaning assembly or the full soldering assembly according to the second embodiment of this application;

[0042] Figure 9 This is a schematic diagram of the motion trajectory of the cleaning fixture and the first lifting member of the cleaning assembly according to the embodiments of this application, or a schematic diagram of the motion trajectory of the full welding fixture and the second lifting member of the full welding assembly.

[0043] Figure label:

[0044] Sealing nail welding line 1000,

[0045] Cleaning equipment 100,

[0046] The system includes a first conveyor 110, a first turret 111, a first turntable 112, a first feeding device 120, a second unloading device 130, a cleaning assembly 140, a first cam divider 150, and a cleaning clamp assembly 160.

[0047] Pre-welding equipment 200,

[0048] Magnetic drive conveyor belt 210, second feeding device 220, third unloading device 230, upper cover device 240, upper nailing device 250, pre-welding device 260, lower cover device 270.

[0049] Full welding equipment 300,

[0050] The system includes a second conveyor 310, a second turret 311, a second turntable 312, a first unloading device 320, a third loading device 330, a full welding assembly 340, and a full welding fixture assembly 360.

[0051] 400 plate chain wire

[0052] Feeding line 410, loading line 420, unloading line 430, discharge line 440.

[0053] Cleaning fixture group 101, full welding fixture group 301. Detailed Implementation

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "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 based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0061] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0062] In the description of this application, 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.

[0063] In this application, "multiple" means two or more (including two).

[0064] A single battery cell can be a rechargeable battery. A rechargeable battery refers to a cylindrical 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.

[0065] The battery processed in this embodiment is a cylindrical battery. The cylindrical battery includes a cylindrical housing, an end cap, and an electrode assembly. The housing defines an accommodating space with an installation opening. The electrode assembly and an insulating cover are disposed inside the housing, and the installation opening is sealed by the end cap.

[0066] For example, the housing is generally cylindrical and open at one axial end to form an accommodating space with an installation port. Electrode components and other functional components such as insulating covers can be installed in the accommodating space. The end cap is closed on the installation port of the housing to isolate the internal environment of the cylindrical 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.

[0067] 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 cylindrical 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.

[0068] 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.

[0069] The housing is an assembly used to fit with the end cap to form the internal environment of a cylindrical battery cell. This internal environment can accommodate electrode components, electrolyte, and other parts. The housing and end cap can be separate components. A mounting opening can be provided on the housing, and the end cap closes the opening at the mounting opening to form the internal environment of the cylindrical battery cell. The housing can be cylindrical in shape.

[0070] Electrode assemblies are the components in a cylindrical battery cell where electrochemical reactions occur. The casing may contain one or more electrode assemblies. An electrode assembly is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. 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 constitute 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 cylindrical battery device, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0071] It should be noted that the manufacturing process of a cylindrical battery includes at least the following: preparation of electrode components, cylindrical battery packaging, and cylindrical battery testing. Cylindrical battery packaging includes multiple steps such as inserting electrode components into the casing, welding the tabs to the output terminals after casing, injecting electrolyte into the cylindrical battery, formation after electrolyte injection, and sealing the injection hole.

[0072] Understandably, sealing pin welding is a critical process for isolating electrode components from the external environment. Sealing pin welding lines generally include three key processes: cleaning of the injection hole, pre-welding, and full welding, which require corresponding cleaning equipment, pre-welding equipment, and full welding equipment, respectively.

[0073] In existing technologies, for cleaning equipment, the cylindrical batteries need to be positioned and fixed before cleaning. After cleaning, the cleaned cylindrical batteries need to be unloaded. Taking laser cleaning as an example, the cleaning process mainly includes actions such as loading, positioning plate positioning, visual guidance, light emission cleaning, positioning plate reset, and unloading. These multiple actions need to be performed sequentially, resulting in low processing efficiency and occupying laser time, leading to low laser utilization and increased processing costs. In addition, the number of devices is large, the space occupied is large, and the cost is high.

[0074] Similarly, for full welding equipment, before full welding, the cylindrical battery needs to be positioned and fixed. After full welding is completed, the fully welded cylindrical battery needs to be unloaded. Taking laser full welding as an example, the full welding process mainly includes: loading, positioning plate positioning, vision guidance, light output welding, positioning plate reset and unloading. The above multiple actions need to be performed in sequence, resulting in low processing efficiency and occupying laser time, resulting in low laser utilization, increased processing cost, and a large number of devices, large space occupation, and high cost.

[0075] For pre-welding equipment, it is necessary to perform the nailing action (that is, to place the sealing nail in the area where the liquid injection hole is located). The accuracy requirement for placing the sealing nail on the cylindrical battery is high. Traditional rotary pre-welding equipment has a large rotational inertia of the rotary table, which causes the sealing nail to vibrate significantly. In addition, the sealing nail is light and easy to fall off, making it difficult to achieve accurate positioning of the sealing nail. It also limits the production efficiency to only 22ppm (that is, 22 batteries per minute). Furthermore, it has poor compatibility with pre-welding of cylindrical batteries and cannot meet the needs of higher production cycles (such as 150ppm or higher).

[0076] Based on this, this application proposes a sealing nail welding line for cylindrical batteries. The cleaning equipment, through the cooperation of a cleaning component, a first conveying device, and a cleaning fixture component, allows the cylindrical battery to be cleaned to move to the position of the cleaning component under the drive of the first conveying device. Simultaneously, the cleaning fixture component can complete positioning and clamping actions, shortening the production cycle and improving production efficiency. Furthermore, by operating according to a first and second set time, the laser utilization rate of the cleaning equipment can be improved, costs reduced, and the cleaning equipment can be further compacted, reducing space occupation. The full welding equipment, through the cooperation of a full welding component, a second conveying device, and a full welding fixture component, allows the cylindrical battery to be fully welded... As the pool moves to the position of the fully welded assembly under the drive of the second conveying device, the fully welded fixture assembly can simultaneously complete the positioning and clamping actions, which can shorten the production cycle and improve production efficiency. Moreover, by following the first and second set time for running and stopping, the laser utilization rate of the fully welded equipment can be improved, costs can be reduced, and the compact design of the fully welded equipment can be further realized, reducing space occupation. The pre-welding equipment uses a magnetic drive conveyor belt to transfer the cylindrical batteries to be pre-welded. The magnetic drive conveyor belt provides a more stable and reliable conveying of the sealing nails, which can reduce the difficulty of nailing the sealing nails and improve the nailing accuracy. In addition, the magnetic drive conveyor belt has a faster conveying speed, which can meet the requirements of higher production cycle.

[0077] In summary, this application, through a cleaning device and a full welding device that can start and stop according to a first set time and a second set time, combined with a pre-welding device using a magnetic drive conveyor belt, can, on the one hand, improve laser utilization, reduce costs, and achieve a compact and miniaturized overall production line setup; on the other hand, while meeting the requirements of higher production cycle time, it can improve the pin mounting accuracy, thereby improving the welding quality of pre-welding and subsequent full welding.

[0078] First, based on Figures 1-9 As shown, the processing flow of the sealing nail welding line 1000 of the cylindrical battery according to an embodiment of this application will be specifically described.

[0079] The cleaning equipment 100 includes, from upstream to downstream, a first feeding device 120, a first conveying device 110, and a second unloading device 130 arranged sequentially along the flow path of the cylindrical batteries to be cleaned. The first conveying device 110 includes a first turret 111 and a first turntable 112. A plurality of cleaning clamp assemblies 160 are arranged on the first turntable 112 at intervals along the circumference of the first turntable 112. The first turntable 112 is poweredly connected to a first cam divider 150. At least one cleaning assembly 140 is located on the circumference of the first turntable 112.

[0080] The first feeding device 120 receives and cleans cylindrical batteries. The first cam divider 150 drives the first turntable 112 to rotate. The first cam divider 150 can reasonably allocate the travel and stop ratio of the first turntable 112 according to a specific drive angle (such as the angular interval between adjacent tooling groups). For example, it rotates according to a first set time and stops according to a second set time. That is, after rotating by an angle according to the drive angle, it stops for a period of time. During the rotation, the lifting and clamping of the cylindrical batteries to be cleaned can be completed simultaneously. During the stop time period, the cylindrical batteries can be cleaned. The cleaning fixture assembly 160 is set on the first turntable 112, and multiple cleaning fixture assemblies 160 can be used to assemble cylindrical batteries. The first turret 111 is fixed, and when the first turntable 112 rotates, the first lifting member and the cleaning fixture can be driven by the first cam groove and the second cam groove on the first turret 111, respectively, so that the cylindrical battery can be pushed against the first positioning cover plate, which facilitates the positioning of the cylindrical battery by the cleaning assembly 140. The cleaning fixture can clamp the cylindrical battery to reduce the probability of movement during the cleaning process and improve the positioning accuracy and cleaning accuracy. The cleaning assembly 140 can be arranged at a reasonable position on the periphery of the first turntable 112 to perform laser cleaning on the cylindrical battery. After cleaning, the cylindrical battery can be transferred to the pre-welding equipment 200 by the second unloading device 130.

[0081] For example, such as Figure 1 , Figure 2 As shown in Figure 3, the first cam divider 150 may have a first output gear, which may be constructed as an incomplete gear. The first turntable 112 is provided with a first meshing tooth, and the first output gear meshes with the first meshing tooth to drive the first turret 111 to rotate for a first set time and stop for a second set time. The first feeding device 120 and the second unloading device 130 may also be provided with a second meshing tooth and a third meshing tooth, respectively, and both the second meshing tooth and the third meshing tooth mesh with the first meshing tooth, so that the entire cleaning equipment 100 can move and stop according to the drive of the first cam divider 150.

[0082] It should be noted that the cleaning device 100 in this application embodiment is used to clean the filling hole of the cylindrical battery after liquid filling. After cleaning, the cylindrical battery needs to be transferred to the next device (pre-welding device 200) for pre-welding of the sealing nails in the filling hole area.

[0083] The pre-welding equipment 200 includes, from upstream to downstream, the following components arranged sequentially along the flow path of the cylindrical battery to be pre-welded: a second feeding device 220, an upper cover device 240, an upper nailing device 250, a pre-welding device 260, a lower cover device 270, and a third unloading device 230.

[0084] The second feeding device 220 receives the cleaned cylindrical battery (i.e., the cylindrical battery to be nailed), the top cover device 240 is used to install a protective cover on the end of the cylindrical battery with the liquid injection hole, the nailing device 250 is used to place the sealing nail to the liquid injection hole, the pre-welding device 260 is used to pre-weld the sealing nail, the bottom cover device 270 removes the protective cover, and the third unloading device 230 is used to remove the pre-welded battery from the pre-welding equipment 200.

[0085] It should be noted that the pre-welding equipment 200 in this application embodiment is used to attach sealing nails and pre-weld sealing nails to the cleaned cylindrical battery. After the pre-welding is completed, the cylindrical battery needs to be transferred to the next equipment (full welding equipment 300) for full welding of sealing nails.

[0086] The full welding equipment 300 includes, from upstream to downstream, a third feeding device 330, a second conveying device 310, and a first unloading device 320 arranged sequentially along the flow path of the cylindrical battery to be fully welded. The second conveying device 310 includes a second turret 311 and a second turntable 312. Multiple full welding fixture assemblies 360 are arranged at intervals along the circumference of the second turntable 312. The second turntable 312 is poweredly connected to a second cam divider (not shown in the figure). At least one full welding assembly 340 is located on the circumference of the second turntable 312.

[0087] The third feeding device 330 is used to receive pre-welded cylindrical batteries (i.e., cylindrical batteries awaiting full welding). The second cam divider is used to drive the second turntable 312 to rotate. The second cam divider can reasonably allocate the travel and stop ratio of the second turntable 312 according to a specific drive angle (such as the angular interval between adjacent tooling groups). For example, it rotates according to a first set time and stops according to a second set time. That is, after rotating an angle according to the drive angle, it stops for a period of time. During the rotation, the lifting and clamping of the cylindrical batteries awaiting full welding can be completed simultaneously. During the stop time period, the full welding of the cylindrical batteries can be performed. The full welding fixture assembly 360 is set on the second turntable 312, and multiple... Each full-welding fixture assembly 360 can be used to assemble cylindrical batteries and position them. The second turret 311 is fixed, and when the second turntable 312 rotates, the second lifting member and the full-welding fixture can be driven by the third and fourth cam grooves on the second turret 311, so that the cylindrical battery can be pushed against the second positioning cover plate. This facilitates the positioning of the cylindrical battery by the full-welding assembly 340. The full-welding fixture can clamp the cylindrical battery to reduce the probability of movement during the full-welding process and improve the positioning and full-welding accuracy. The full-welding assembly 340 can be arranged at a reasonable position on the periphery of the second turntable 312 to perform laser welding on the cylindrical battery.

[0088] For example, the second cam divider may have a second output gear, which may be constructed as an incomplete gear, and the second turntable 312 is provided with a fourth meshing tooth. The second output gear meshes with the fourth meshing tooth to drive the second turret 311 to rotate for a first set time and stop for a second set time. The third feeding device 330 and the first unloading device 320 may also be provided with a fifth meshing tooth and a sixth meshing tooth, respectively, and both the fifth and sixth meshing teeth mesh with the fourth meshing tooth, so that the entire welding equipment 300 can move and stop according to the drive of the second cam divider.

[0089] It is understood that in some embodiments, the first cam divider 150 and the second cam divider can be integrated, and the first turret 111, the second turret 311, the first feeding device 120, the first unloading device 320, the second unloading device 130 and the third unloading device 230 can achieve power transmission by sequentially meshing multiple sets of meshing teeth (without a fixed order).

[0090] The following is for reference. Figures 1-9 Describes the sealing pin welding line 1000 of a cylindrical battery according to an embodiment of this application.

[0091] like Figure 1 As shown, this application discloses a sealing nail welding line 1000 for a cylindrical battery, including: a cleaning device 100, a pre-welding device 200, and a full-welding device 300.

[0092] Among them, combined Figure 2 , Figure 3 , Figure 4 as well as Figure 5 , Figure 6 As shown, the cleaning equipment 100 has a first conveying device 110, which is configured to operate for a first set time to convey cylindrical batteries to be cleaned and to pause for a second set time to clean the electrolyte filling holes of the cylindrical batteries to be cleaned. The pre-welding device 200 is located downstream of the cleaning equipment 100 and includes a magnetic drive conveyor belt 210 adapted to receive cylindrical batteries cleaned by the cleaning equipment 100. The pre-welding device 200 is used to pre-weld sealing nails onto the cleaned cylindrical batteries. The full-welding device 300 is located downstream of the cleaning equipment 100 and has a second conveying device 310, which is configured to operate for a first set time to convey pre-welded cylindrical batteries and to pause for a second set time to fully weld the electrolyte filling hole area of ​​the pre-welded cylindrical batteries.

[0093] The first conveying device 110 and the second conveying device 310 drive the cylindrical battery to move and stop cyclically according to the first set time and the second set time.

[0094] It should be noted that both the first conveying device 110 and the second conveying device 310 can move and stop according to the time ratio of the first set time and the second set time. During the movement (within the first set time), the cylindrical batteries to be cleaned can be loaded into the cleaning equipment 100, the cylindrical batteries to be cleaned can be unloaded into the cleaning equipment 100, the cylindrical batteries to be fully welded can be loaded into the full welding equipment 300, and the cylindrical batteries to be fully welded can be unloaded into the full welding equipment 300. During the stop (within the second set time), the cleaning equipment 100 can clean the cylindrical batteries to be cleaned, and the full welding equipment 300 can perform full welding on the batteries to be fully welded.

[0095] In the existing technology, the cleaning equipment 100 needs to lift the cylindrical battery and clamp it with a fixture after the cylindrical battery arrives at the cleaning position. These two auxiliary actions take a certain amount of time (e.g., 3 seconds). In other words, these two auxiliary actions occupy 3 seconds of the production cycle. During these 3 seconds, the cleaning laser of the cleaning equipment 100 is still on, which reduces the laser utilization rate, increases equipment cost, and the existing layout of the cleaning equipment 100 also increases space occupation.

[0096] Similarly, in the existing technology, the full welding equipment 300 needs to lift the cylindrical battery and clamp the fixture after the cylindrical battery reaches the full welding position. These two auxiliary actions also take a certain amount of time (e.g., 3 seconds). In other words, these two auxiliary actions occupy 3 seconds of the production cycle. During these 3 seconds, the full welding laser of the full welding equipment 300 is still on, which reduces the laser utilization rate, increases equipment cost, and the existing layout of the full welding equipment 300 will also increase space occupation.

[0097] It is understood that in the embodiments of this application, the cleaning equipment 100 and the full welding equipment 300 can load and unload cylindrical batteries within a first set time, and can simultaneously realize auxiliary actions such as lifting and clamping of cylindrical batteries. This allows the loading and unloading of cylindrical batteries to be coupled with the auxiliary actions before laser cleaning and laser welding, which can reduce processing time, speed up production cycle, improve laser utilization, reduce cleaning costs and full welding costs, and improve production efficiency.

[0098] Furthermore, in this embodiment, the pre-welding equipment 200 uses a magnetic drive conveyor belt 210 to transport cylindrical batteries. The pre-welded cylindrical batteries are received into the pre-welding equipment 200 and then removed from the pre-welding equipment 200. The magnetic drive conveyor belt 210 can define the flow path of the cylindrical batteries in a straight line or a ring within the pre-welding equipment 200. During the flow of the cylindrical batteries along the flow path, the movement of the cylindrical batteries is more stable, the vibration of the sealing nails is less, and the probability of the smaller sealing nails shifting or even falling off is lower. This can reduce the positioning difficulty of the sealing nails, improve the positioning accuracy, and thus improve the pre-welding quality and reduce the probability of pre-welding point offset or missing pre-welding points.

[0099] It should be noted that in the prior art, the rotary pre-welding equipment 200 is used for pre-welding of sealing nails. The rotational inertia of the rotary table is relatively large, and the sealing nails are easy to detach or fall off. Therefore, the rotary pre-welding equipment 200 is not suitable for pre-welding of sealing nails of cylindrical batteries. In order to reduce the impact of rotational inertia on battery pre-welding, the production cycle of the rotary pre-welding equipment 200 also needs to be set to a low level, which can only reach 22ppm. This is not compatible with the high production cycle (not less than 150ppm) of the upstream stop-start driven cleaning equipment 100 and the downstream stop-start driven full welding equipment 300. However, the pre-welding equipment 200 of this application, which adopts a magnetic drive conveyor belt 210 structure, can not only meet the high production cycle requirements and match the upstream and downstream cleaning equipment 100 and full welding equipment 300, but also ensure the pre-welding quality of the pre-welding equipment 200.

[0100] Understandably, for cylindrical batteries, once the electrode assembly is installed inside the casing and the electrolyte is injected, the cylindrical battery becomes charged. Furthermore, the positive and negative electrodes are led out from the end cap with the electrolyte injection hole, or the casing itself forms the negative electrode. This results in a close distance between the positive and negative electrodes, potentially causing the sealing pin to shift or tilt, which could lead to a short circuit in the cylindrical battery. The magnetic drive conveyor belt 210 of this application, which transports the cylindrical battery and the sealing pin, reduces the probability of the sealing pin tilting or shifting, thereby reducing the probability of a short circuit in the cylindrical battery and improving the safety of the pre-welding equipment 200.

[0101] According to the sealing nail welding line 1000 of this application embodiment, the cleaning equipment 100 and the pre-welding equipment 300, which can be stopped and started, can improve laser utilization, reduce processing costs, and achieve a compact and miniaturized configuration of the cleaning equipment 100 and the pre-welding equipment 200, reducing space occupation. The pre-welding equipment 200, which adopts a magnetic drive conveyor belt 210, can not only be adapted to the high production cycle of the cleaning equipment 100 and the pre-welding equipment 200, but also has higher safety, which can improve the overall safety and reliability of the sealing nail welding line 1000.

[0102] like Figure 1 As shown, according to some embodiments of this application, the sealing nail welding line 1000 further includes: a plate chain line 400, which is disposed between the cleaning device 100 and the pre-welding device 200, and between the pre-welding device 200 and the full-welding device 300, and the plate chain line 400 is adapted to buffer cylindrical batteries at different stages.

[0103] It should be noted that cylindrical batteries at different stages include: cylindrical batteries to be cleaned, cylindrical batteries that have been cleaned (cylindrical batteries to be pre-welded), cylindrical batteries that have been pre-welded (cylindrical batteries to be fully welded), and cylindrical batteries that have been fully welded.

[0104] The plate chain line 400 can be used to supply cylindrical batteries to be cleaned to the cleaning equipment 100, to the pre-welding equipment 200, and to the full-welding equipment 300. The plate chain line 400 can realize the series connection between the cleaning equipment 100, the pre-welding equipment 200, and the full-welding equipment 300. A certain amount of cylindrical batteries can be stored on the plate chain line 400. During the process of running and stopping according to the first set time and the second set time, at each time within the first set time, a portion of the cylindrical batteries on the plate chain line 400 can be supplied to the cleaning equipment 100, the pre-welding equipment 200, and the full-welding equipment 300. The cylindrical batteries that have been cleaned in the cleaning equipment 100, the pre-welding equipment 200, and the full-welding equipment 300 can be removed. Correspondingly, a certain amount of cylindrical batteries at different stages can be buffered in the cleaning equipment 100, the pre-welding equipment 200, and the full-welding equipment 300.

[0105] More importantly, the plate chain line 400 is flexible and can be arranged around the full welding equipment 300, pre-welding equipment 200, and cleaning equipment 100 according to spatial layout requirements. The full welding equipment 300, pre-welding equipment 200, and cleaning equipment 100 can be reasonably arranged on both sides or around the plate chain line 400. The plate chain line 400 itself can also be extended in length by folding and wrapping. This not only reduces the overall space occupied by the sealing nail welding line 1000, but also allows the full welding equipment 300, pre-welding equipment 200, and cleaning equipment 100 to be integrated as three modules through the plate chain line 400. Each device can perform its own function, eliminating the need for a large workstation to integrate all functions (such as multiple laser systems, a large nail mounting device 250, and multiple workstation fixtures). This improves space utilization, avoids space redundancy, and makes the overall structure more streamlined.

[0106] In other words, the cleaning equipment 100, the pre-welding equipment 200, and the full-welding equipment 300 are directly connected. If any one of these devices fails, the sealing nail welding line 1000 will need to be shut down entirely. However, the plate chain line 400 can avoid this situation. At the same time, the three types of equipment have certain structural differences. The plate chain line 400 can be used to optimize the overall layout and improve space utilization by taking advantage of its flexibility and ability to be laid out in any direction.

[0107] Therefore, on the one hand, by setting up the plate chain line 400, cylindrical batteries at different stages can be buffered, so that if any one of the cleaning equipment 100, the full welding equipment 300 and the pre-welding equipment 200 fails, the other equipment can still continue to process cylindrical batteries based on the buffered cylindrical batteries. This can avoid the overall failure of the sealing nail welding line 1000 to a certain extent, and improve the stability and reliability of operation. On the other hand, based on the flexible layout of the plate chain line 400, multiple modular devices can be connected in series, while avoiding space redundancy, improving space occupation, and simplifying the structure.

[0108] Combination Figure 1 As shown, according to some embodiments of this application, the plate chain line 400 includes: a feeding line 410 and a discharging line 440. The feeding line 410 has a main feeding port and at least one feeding outlet. The feeding outlet is connected to the first feeding device 120 of the cleaning equipment 100. The discharging line 440 has a main discharging port and at least one discharging inlet. The discharging inlet is connected to the first unloading device 320 of the welding equipment 300.

[0109] Specifically, the feeding line 410 is located upstream of the cleaning equipment 100. The main feeding port is for the cylindrical batteries to be cleaned to flow in, and the feeding outlet is for the cylindrical batteries to be cleaned to flow out. The feeding outlet is connected to the first feeding device 120 of the cleaning equipment 100 to supply the cylindrical batteries to be cleaned to the cleaning equipment 100. There can be multiple cleaning equipment 100s, and there can be multiple corresponding feeding outlets. The feeding outlets and the first feeding devices 120 can be set up one-to-one. The discharging line 440 is located downstream of the full welding equipment 300. The discharging inlet is used to receive the fully welded cylindrical batteries. There can be multiple full welding equipment 300s, and there can be multiple corresponding discharging inlets. The discharging inlets and the first unloading device 320 can be set up one-to-one. The main discharging port is used to remove the fully welded cylindrical batteries flowing out of multiple full welding equipment 300s as a whole from the sealing nail welding line 1000.

[0110] In this way, by setting up the feeding line 410 and the discharging line 440, multiple cleaning equipment 100 and multiple full welding equipment 300 can be set up in parallel, which can further increase the production quantity of the sealing nail welding line 1000 per unit time, thereby improving production efficiency. In addition, setting up multiple sets of equipment in parallel can also improve space occupation and achieve compact setup.

[0111] Combination Figure 1 As shown, according to some embodiments of this application, the plate chain line 400 further includes: at least one feeding line 420 and at least one unloading line 430. The feeding inlet of the feeding line 420 is connected to the second unloading device 130 of the cleaning equipment 100, the feeding outlet of the feeding line 420 is connected to the second feeding device 220 of the pre-welding equipment 200, the unloading inlet of the unloading line 430 is connected to the third unloading device 230 of the pre-welding equipment 200, and the unloading outlet of the unloading line 430 is connected to the third feeding device 330 of the full welding equipment 300.

[0112] Specifically, the feeding line 420 and the unloading line 430 are arranged in pairs. The feeding line 420 is located between the cleaning equipment 100 and the pre-welding equipment 200, and is used to receive the cleaned cylindrical batteries and supply them to the pre-welding equipment 200. The unloading line 430 is located between the pre-welding equipment 200 and the full-welding equipment 300, and is used to receive the pre-welded cylindrical batteries and supply them to the full-welding equipment 300. The two ends of the feeding line 420 are connected to the second unloading device 130 and the second feeding device 220, and the two ends of the unloading line 430 are connected to the third feeding device 330 and the third unloading device 230.

[0113] Therefore, based on the number of pre-welding equipment 200, a corresponding number of feeding lines 420 and unloading lines 430 can be arranged to form multiple cylindrical battery processing paths in parallel. Multiple sets of cleaning equipment 100, pre-welding equipment 200 and full welding equipment 300 respectively form multiple cylindrical battery processing paths, which can further realize the compact layout of sealing nail welding line 1000 and increase the output per unit time of sealing nail welding line 1000, thereby improving production efficiency.

[0114] According to some embodiments of this application, at least the second feeding device 220 and the third unloading device 230 are configured as impellers.

[0115] It is understandable that the plate chain 400 is connected to the impeller, and the cylindrical batteries on the plate chain 400 can be divided into fixed intervals by the impeller. The connection between the mover of the magnetic drive conveyor belt 210 and the cylindrical batteries is similar to the meshing of a gear and rack, which makes the connection structure between the impeller and the magnetic drive conveyor belt 210 simple, reliable and efficient.

[0116] According to some embodiments of this application, the pre-welding equipment 200 includes: a nailing device 250 and a cover device 240, the cover device 240 being located upstream of the nailing device 250 and adapted to cover the end of the cylindrical battery having an injection hole before nailing the cylindrical battery.

[0117] It should be noted that after the electrolyte filling is completed, the cylindrical battery is charged, and at this time the electrolyte filling hole is open and waiting to be sealed. Sealing the electrolyte filling hole is a key process for isolating the internal space of the casing from the external environment. The electrolyte filling hole is located on the end cap, which can lead out both the positive and negative terminals of the cylindrical battery at the same time, or the casing can serve as the negative terminal and the end cap can lead out the positive terminal separately. The sealing nail is generally an aluminum nail. The distance between the positive and negative terminals of the cylindrical battery is very close. If there is a positional deviation when the sealing nail is welded on the end cap, it may cause the negative and positive terminals to overlap, resulting in a short circuit and posing a safety hazard.

[0118] Specifically, the top cover device 240 can install a protective cover onto the end of the cylindrical battery with the liquid injection hole. The protective cover is made of insulating material and covers the cylindrical battery. The protective cover has a clearance hole opposite to the liquid injection hole. The top nail device 250 can place a sealing nail in the area of ​​the clearance hole so that the sealing nail can be placed at the position of the liquid injection hole. The protective cover is made of insulating material, so that after the sealing nail is placed in the expected position, the probability of the sealing nail directly contacting the negative electrode of the casing or the cylindrical battery on the end cover is lower, thereby reducing the probability of short circuit in the cylindrical battery and reducing safety hazards.

[0119] It should be noted that the protective cover is made of insulating material and should have good corrosion resistance. In addition to providing insulation protection, it also needs to be replaced regularly to reduce the probability of adhesions on the protective cover and contamination of the cylindrical battery, thereby reducing the probability that the protective cover will affect the product yield.

[0120] Understandably, before attaching the nail, this application first installs the protective cover onto the end of the cylindrical battery with the liquid injection hole. Before the sealing nail is pre-welded, the protective cover provides effective insulation protection for the inside of the cylindrical battery, avoiding damage to the cylindrical battery due to current leakage or short circuit during the pre-welding process, thereby improving the pre-welding safety and quality of the cylindrical battery.

[0121] According to some embodiments of this application, the pre-welding equipment 200 further includes a pre-welding device 260 and a lower cover device 270. The pre-welding device 260 and the lower cover device 270 are sequentially disposed downstream of the upper nail device 250. The lower cover device 270 is adapted to remove the protective cover located on the cylindrical battery after the pre-welding of the cylindrical battery is completed.

[0122] Specifically, the upper cover device 240, the upper nail device 250, the pre-welding device 260, and the lower cover device 270 are sequentially arranged on the flow path of the cylindrical battery within the pre-welding equipment 200. This ensures that the protective cover is applied before nailing and the protective cover is applied after pre-welding. This ensures that even if the sealing nail is mispositioned, poorly welded, or even shifts during the nailing or pre-welding process, it will not cause a short circuit in the cylindrical battery. This further improves the safety of the pre-welding equipment and reduces safety hazards.

[0123] like Figure 2 and Figure 3 As shown, the cleaning equipment 100 includes: multiple cleaning components 140 and multiple cleaning clamp assemblies 160. The cleaning components 140 are arranged circumferentially along the first conveying device 110. The cleaning clamp assembly 160 includes a cleaning clamp and a first lifting member. The cleaning clamp is used to hold the cylindrical battery to be cleaned, and the first lifting member is used to push the cylindrical battery out of the cup. Figure 4 and Figure 5 As shown, the full welding equipment 300 includes: multiple full welding components 340 and multiple full welding fixture components 360. The full welding components 340 are arranged circumferentially along the second conveying device 310. The full welding fixture components 360 include full welding fixtures and second lifting members. The full welding fixtures are used to hold the cylindrical batteries to be cleaned, and the second lifting members are used to push the cylindrical batteries out of the cup.

[0124] During rotation, the first conveying device 110 can synchronously drive the cleaning fixture and the first lifting component, so that the cleaning fixture and the first lifting component interact. The first lifting component separates the cylindrical battery to be cleaned from the cup and facilitates the laser-guided positioning of the cleaning assembly 140. At the same time, the cleaning fixture can clamp the battery to be cleaned to prevent the cylindrical battery to be cleaned from moving during the subsequent cleaning process of the cleaning assembly 140, thereby improving the cleaning accuracy and cleaning effect. Meanwhile, the auxiliary actions performed by the cleaning fixture assembly 160 before and after the cleaning are all realized under the drive of the first conveying device 110. This can also simplify the structure of the cleaning equipment 100, reduce costs, and improve the space occupied by the cleaning equipment 100.

[0125] During rotation, the second conveying device 310 can synchronously drive the full welding fixture and the second lifting component, so that the full welding fixture and the second lifting component interact. The second lifting component separates the cylindrical battery to be fully welded from the cup and facilitates the laser-guided positioning of the full welding assembly 340. At the same time, the full welding fixture can clamp the battery to be fully welded to prevent the cylindrical battery to be fully welded from moving during the subsequent full welding process of the full welding assembly 340, thereby improving the full welding accuracy and effect. At the same time, the full welding fixture assembly 360 can perform auxiliary actions before and after the full welding of the battery, all of which can be realized under the drive of the second conveying device 310. This can also simplify the structure of the full welding equipment 300, reduce costs, and improve the space occupation of the full welding equipment 300.

[0126] Wherein, the running trajectory of the first conveying device 110 is in the first direction, and there are multiple cleaning components 140 arranged at intervals along the first direction. The first conveying device 110 is configured to run for a first set time to convey the cylindrical battery to be cleaned and to pause for a second set time so that the liquid injection hole of the cylindrical battery to be cleaned is cleaned by one of the cleaning components 140. Multiple cleaning clamping components 160 are arranged at intervals along the first direction on the conveying device. Each cleaning clamping component 160 includes a cleaning clamp and a first lifting member. The cleaning clamp is used to hold the cylindrical battery to be cleaned, and the first lifting member can interact with the cleaning clamp to separate the cylindrical battery to be cleaned from the cup within one of the first set time periods.

[0127] Specifically, the first direction is the rotation direction, which can be a counterclockwise or clockwise rotation direction. The first conveying device 110 can rotate along the first direction, and during the rotation, it can rotate for a first set time and stop rotating for a second set time. During the rotation within the first set time, cylindrical batteries to be cleaned can be placed on some of the cleaning clamp assemblies 160. The cleaning clamp assemblies 160 with the cylindrical batteries to be cleaned can move towards the cleaning assembly 140 along the first direction. During the movement towards the cleaning assembly 140, the first lifting member can separate the cylindrical batteries to be cleaned from the cup. The first lifting member interacts with the cleaning clamp so that after the first lifting member separates the cylindrical batteries to be cleaned from the cup, the cleaning clamp simultaneously clamps the cylindrical batteries to be cleaned.

[0128] Then, the clamped cylindrical battery can flow through the cleaning assembly 140, and the first conveying device 110 pauses for a second set time to clean the cylindrical battery to be cleaned within the second set time.

[0129] Similarly, if the running trajectory of the second conveying device 310 is the first direction, then there are multiple full-welding components 340 and they are spaced apart along the first direction. The second conveying device 310 is configured to run for a first set time to convey the cylindrical battery to be fully welded and to pause for a second set time so that the liquid injection hole of the cylindrical battery to be fully welded is fully welded by one of the full-welding components 340. Multiple full-welding clamping components 360 are spaced apart on the conveying device along the first direction. The full-welding clamping component 360 includes a full-welding clamp and a second lifting member. The full-welding clamp is used to hold the cylindrical battery to be fully welded. The second lifting member can interact with the full-welding clamp to separate the cylindrical battery to be fully welded from the cup within one of the first set time periods.

[0130] Specifically, the second conveying device 310 can rotate along the first direction, and during the rotation, it can rotate for a first set time and stop rotating for a second set time. During the rotation within the first set time, cylindrical batteries to be fully welded can be placed on some of the full welding fixture assemblies 360. The full welding fixture assemblies 360 with the cylindrical batteries to be fully welded can move towards the full welding assembly 340 along the first direction. During the movement towards the full welding assembly 340, the second lifting member can separate the cylindrical batteries to be fully welded from the cup. The second lifting member interacts with the full welding fixture so that after the second lifting member separates the cylindrical batteries to be fully welded from the cup, the full welding fixture simultaneously clamps the cylindrical batteries to be fully welded.

[0131] Furthermore, the clamped cylindrical battery can flow through the full-welding assembly 340, and the second conveying device 310 pauses for a second set time to perform full-welding of the cylindrical battery to be fully welded within the second set time.

[0132] It should be noted that the first conveying device 110 can travel and stop according to the time ratio of the first set time and the second set time. During the travel (within the first set time), the cleaning clamp assembly 160 can simultaneously load the cylindrical batteries to be cleaned, unload the cylindrical batteries to be cleaned, separate the cylindrical batteries from the cup before they move to the cleaning assembly 140, and clamp the cylindrical batteries to be cleaned. During the stop (within the second set time), the cleaning assembly 140 can clean the cylindrical batteries to be cleaned. During the loading process of the cylindrical batteries to be cleaned, the separation of the cylindrical batteries from the cup and the clamping of the cylindrical batteries to be cleaned can be completed simultaneously. During the unloading process of the cleaned batteries, the resetting and unloading of the cylindrical batteries can be completed simultaneously. Release; the second conveying device 310 can move and stop according to the time ratio of the first set time and the second set time. During the movement (within the first set time), the full welding fixture assembly 360 can simultaneously realize the feeding of the cylindrical battery to be fully welded, the unloading of the cylindrical battery to be fully welded, the separation of the cylindrical battery to be fully welded from the cup before it moves to the full welding assembly 340, and the clamping of the cylindrical battery to be fully welded. During the stop (within the second set time), the full welding assembly 340 can perform full welding on the cylindrical battery to be fully welded. During the feeding of the cylindrical battery to be fully welded, the separation of the cylindrical battery to be fully welded from the cup and the clamping of the cylindrical battery to be fully welded can be completed simultaneously. During the unloading of the fully welded battery, the reset and release of the cylindrical battery can be completed simultaneously.

[0133] It is understandable that separating the cylindrical battery from the cup within one of the first set time periods means that a loading and unloading process is performed once within each first time period. Multiple cylindrical batteries can be loaded each time. After multiple cylindrical batteries are loaded, they move synchronously toward the cleaning component 140 or the full welding component 340. At this time, the cylindrical batteries are clamped by the fixture. Other cylindrical batteries have been loaded before the first set time period, but have not been cleaned or fully welded. Therefore, the other cylindrical batteries are still in a state of being separated from the cup and clamped, but this is not done within the first set time period. It may be done in the previous first set time period or an earlier first set time period.

[0134] Therefore, during the process of conveying cylindrical batteries to be cleaned by the first conveying device 110, the cleaning fixture assembly 160 can couple the battery loading action with the auxiliary action before battery cleaning, and the battery unloading action with the auxiliary action after battery cleaning. During the process of conveying cylindrical batteries to be fully welded by the second conveying device 310, the full welding fixture assembly 360 can couple the battery loading action with the auxiliary action before full welding, and the battery unloading action with the auxiliary action after full welding. This can reduce processing time, speed up production cycle, improve laser utilization, reduce costs, and improve production efficiency.

[0135] Combination Figure 2 and Figure 3 As shown, the first conveying device 110 includes: a first turret 111 and a first turntable 112, a plurality of cleaning clamp assemblies 160 are spaced apart on the first turntable 112 along the circumference, the first turret 111 is sleeved on the first turntable 112, the first turret 111 has a first cam groove and a second cam groove, the first cam groove is used to drive the cleaning clamp to hold the cylindrical battery, and the second cam groove is used to drive the first lifting member; the second conveying device 310 includes: a second turret 311 and a second turntable 312, a plurality of full-welding clamp assemblies 360 are spaced apart on the second turntable 312 along the circumference, the second turret 311 is sleeved on the second turntable 312, the second turret 311 has a third cam groove and a fourth cam groove, the third cam groove is used to drive the full-welding clamp to hold the cylindrical battery, and the fourth cam groove is used to drive the second lifting member.

[0136] In the existing technology, both the cleaning equipment 100 and the full welding equipment 300 can be arranged in a linear layout. After the cylindrical battery reaches the cleaning position or the full welding position, the battery needs to be lifted and the clamped by the fixture in sequence. These two auxiliary actions take a certain amount of time (e.g., 3 seconds). In other words, these two auxiliary actions occupy 3 seconds of the production cycle. During these 3 seconds, the lasers of the cleaning component 140 and the full welding component 340 are still on, which reduces the laser utilization rate, increases equipment costs, and the linear layout also increases space occupation.

[0137] In this application, by constructing both the full welding equipment 300 and the pre-welding equipment 200 as cam-type turret devices, space occupancy can be improved, laser utilization can be increased, and costs can be reduced.

[0138] Specifically, the first turntable 112 is provided with a plurality of cleaning clamp assemblies 160 at intervals in the first direction, the first turret 111 is sleeved on the first turntable 112, the first turntable 112 can rotate relative to the first turret 111, and the first turret 111 has a first cam groove and a second cam groove, the first lifting member can contact and drive with the first cam groove, the cleaning clamp can contact and drive with the second cam groove, and the first turntable 112 is adapted to drive the first moving clamp assembly to rotate in the first direction, so that the first cam groove and the second cam groove are respectively used to drive the cleaning clamp and the first lifting member to move.

[0139] Specifically, the first turntable 112 can drive the cleaning clamp assembly 160 located thereon to rotate. The first lifting member and the cleaning clamp on each cleaning clamp assembly 160 are respectively located in the first cam groove and the second cam groove. The first cam groove can define the movement trajectory of the first lifting member, and the second cam groove can define the movement trajectory of the cleaning clamp, so that the first lifting member can further drive the cylindrical battery to separate or reset from the cup under the drive of the first cam groove, and the cleaning clamp can clamp or release the cylindrical battery under the drive of the second cam groove.

[0140] It should be noted that the first cam groove and the second cam groove are used to drive the movement of the cleaning clamp and the first lifting member, respectively, including: moving the cylindrical battery away from or towards the cup, and driving the cleaning clamp to clamp or release the cylindrical battery.

[0141] Understandably, in combination Figure 3 As shown, the first turntable 112 can drive the cleaning clamp assembly 160 to move in the first direction. During the rotation of the first turntable 112 and the cleaning clamp assembly 160, at least a portion of the first lifting member can slide in the first cam groove, and at least a portion of the cleaning clamp can slide in the second cam groove, so that within a first set time, the first lifting member can drive the cylindrical battery away from the cup (such as lifting), and the cleaning clamp can clamp the cylindrical battery. After the cleaning of the cylindrical battery is completed, the cleaning clamp can release the cylindrical battery, and the first lifting member can reset so that the cylindrical battery is reset back into the cup.

[0142] In other words, a double-layer cam groove structure is formed on the first turret 111 through the first cam groove and the second cam groove. Through the cooperation of the cam trajectories of the two cam grooves, the cylindrical battery can be clamped, fixed and released, and the cylindrical battery can be lifted and lowered. Visual guidance and laser cleaning are achieved through the cleaning component 140.

[0143] Therefore, through the cooperation of the first turntable 112, the first turret 111 and the cleaning fixture assembly 160, the loading action of the cylindrical battery is coupled with the auxiliary action before cleaning, and the unloading action of the battery is coupled with the auxiliary action after cleaning, so as to simplify the production cycle and improve production efficiency. At the same time, the cam turret layout can improve the space occupation of the cleaning equipment 100, reduce the space requirements of the factory, and reduce the layout cost.

[0144] Similarly, such as Figure 4 and Figure 5 As shown, the second turntable 312 is provided with a plurality of full welding fixture assemblies 360 at intervals in the first direction. The second turret 311 is sleeved on the second turntable 312. The second turntable 312 can rotate relative to the second turret 311. The second turret 311 has a third cam groove and a fourth cam groove. The second lifting member can contact and drive with the third cam groove. The full welding fixture can contact and drive with the second cam groove. The second turntable 312 is adapted to drive the full welding fixture assembly 360 to rotate in the second direction, so that the third cam groove and the fourth cam groove are used to drive the full welding fixture and the second lifting member to move, respectively.

[0145] Specifically, the second turntable 312 can drive the full welding fixture assembly 360 located thereon to rotate. The second lifting member and the full welding fixture on each full welding fixture assembly 360 are respectively located in the third cam groove and the fourth cam groove. The third cam groove can limit the movement trajectory of the second lifting member, and the fourth cam groove can limit the movement trajectory of the full welding fixture, so that the second lifting member can further drive the cylindrical battery to separate or reset from the cup under the drive of the third cam groove, and the full welding fixture can clamp or release the cylindrical battery under the drive of the fourth cam groove.

[0146] It should be noted that the third cam groove and the fourth cam groove are used to drive the movement of the full welding fixture and the second lifting component, respectively: to move the cylindrical battery away from or toward the cup, and to drive the full welding fixture to clamp or release the cylindrical battery.

[0147] Understandably, in combination Figure 5 As shown, the second turntable 312 can drive the full welding fixture assembly 360 to move in the second direction. During the rotation of the full welding fixture assembly 360 driven by the second turntable 312, at least a portion of the second lifting member can slide in the third cam groove, and at least a portion of the full welding fixture can slide in the fourth cam groove, so that within a second set time, the second lifting member can drive the cylindrical battery away from the cup (such as lifting), and the full welding fixture can clamp the cylindrical battery. After the full welding of the cylindrical battery is completed, the full welding fixture can release the cylindrical battery, and the second lifting member can reset so that the cylindrical battery is reset back into the cup.

[0148] In other words, the second turret 311 is formed with a double-layer cam groove structure through the third cam groove and the fourth cam groove. The cam trajectory of the two cam grooves can be matched to realize the clamping, fixing and releasing of the cylindrical battery, as well as the lifting and lowering of the cylindrical battery. Visual guidance and laser full welding are realized through the full welding component 340.

[0149] Therefore, by coordinating the second turntable 312, the second turret 311, and the full welding fixture assembly 360, the loading action of the cylindrical battery is coupled with the auxiliary action before full welding, and the unloading action of the battery is coupled with the auxiliary action after full welding, so as to simplify the production cycle and improve production efficiency. At the same time, the cam turret layout can improve the space occupation of the full welding equipment 300, reduce the space requirements of the factory, and reduce the layout cost.

[0150] Combination Figure 3 , Figure 6 and Figure 7 As shown, the cleaning equipment 100 also includes a first cam divider 150, a first conveying device 110 connected to the first cam divider 150, and a cleaning fixture assembly 160 divided into multiple cleaning fixture groups 101 in the circumference of the first turntable 112. Each cleaning fixture group 101 contains at least two cleaning fixture assemblies 160, and the angular interval between two adjacent cleaning fixture groups 101 is a first included angle. The first cam divider 150 is used to drive the first conveying device 110 to move according to the first included angle.

[0151] Specifically, the first cam divider 150 and the first turntable 112 can be configured as a gear meshing transmission structure. The first cam divider 150 itself drives the first turntable 112 to rotate through an incomplete gear, so that the first turntable 112 can achieve proportional control between rotation and stop according to the drive angle of the first cam divider 150. For example, when the first cam divider 150 rotates one revolution, it drives the first turntable 112 to rotate one-third revolution, that is, the ratio of movement to stop is 1:2. During the movement, the loading of cylindrical batteries to be cleaned, the unloading of cylindrical batteries to be cleaned, the auxiliary actions before cleaning the cylindrical batteries to be cleaned, and the auxiliary actions before unloading the cylindrical batteries to be cleaned can be realized simultaneously.

[0152] In this way, the cylindrical battery can have a travel time (first set time) and a stop time (second set time) in the first turntable 112. Processing can be carried out during the stop time, that is, intermittent processing can be realized. At the same time, the proportion of time spent cleaning the cylindrical battery can be greater than the proportion of time spent in the processing preparation sequence, so as to improve production efficiency, improve laser utilization, and reduce costs.

[0153] For example, if the drive angle of the first cam divider 150 is 120°, then the ratio of travel time to stop time is 1:2. If it takes 1 second to drive the first turntable 112 to rotate 120°, then the stop time is 2 seconds, which provides more time for cleaning the cylindrical battery and increases the utilization rate of the laser.

[0154] It should be noted that the first cam divider 150 drives the first turntable 112 to move, so that the first cam divider 150 moves and stops according to the travel time and the stop time. During each travel time, multiple cylindrical batteries can be loaded, that is, multiple cylindrical batteries can be loaded each time.

[0155] Combination Figure 5 , Figure 6 as well as Figure 7 As shown, the full welding equipment 300 also includes a second cam divider, a second conveying device 310 connected to the second cam divider, and a full welding fixture assembly 360 divided into multiple full welding fixture groups 301 in the circumference of the second turntable 312. Each full welding fixture group 301 contains at least two full welding fixture assemblies 360, and the angular interval between two adjacent full welding fixture groups 301 is a first included angle. The second cam divider is used to drive the second conveying device 310 to move according to the first included angle.

[0156] Specifically, the second cam divider and the second turntable 312 can be configured as a gear meshing transmission structure. The second cam divider itself drives the second turntable 312 to rotate through an incomplete gear, so that the second turntable 312 can achieve proportional control between rotation and stop according to the drive angle of the second cam divider. For example, when the second cam divider rotates one revolution, it drives the second turntable 312 to rotate one-third revolution, that is, the travel-stop ratio is 1:2. During the travel, the loading of cylindrical batteries to be fully welded, the unloading of cylindrical batteries to be fully welded, the auxiliary actions before the full welding of cylindrical batteries to be fully welded, and the auxiliary actions before the unloading of cylindrical batteries to be fully welded can be realized simultaneously.

[0157] In this way, the cylindrical battery can have a travel time (second set time) and a stop time (second set time) in the second turntable 312. Processing can be carried out during the stop time, that is, intermittent processing can be realized. At the same time, the proportion of time spent on full welding of cylindrical battery can be greater than the proportion of time spent on processing preparation sequence, so as to improve production efficiency, improve laser utilization, and reduce costs.

[0158] For example, if the drive angle of the second cam divider is 120°, then the ratio of travel time to stop time is 1:2. If it takes 1 second to drive the second turntable 312 to rotate 120°, then the stop time is 2 seconds, which provides more time for full welding of the cylindrical battery and higher laser utilization.

[0159] It should be noted that the second cam divider drives the second turntable 312 to move, so that the second cam divider moves and stops according to the travel time and stop time. During each travel time, multiple cylindrical batteries can be loaded, that is, multiple cylindrical batteries can be loaded each time.

[0160] In summary, by setting the first cam divider 150 and the second cam divider, intermittent processing of the cleaning equipment 100 and the full welding equipment 300 can be realized respectively. At the same time, the time consumption of the cylindrical battery processing sequence can be greater than the time consumption of the processing preparation sequence, thereby improving production efficiency, increasing laser utilization, and reducing costs.

[0161] like Figure 7 and Figure 8 As shown, the number of cleaning components 140 is the same as the number of cleaning fixture components 160 in the cleaning fixture group 101, and each cleaning fixture group 101 is provided with one cleaning component 140, or each cleaning fixture group 101 is provided with one cleaning component 140, and the last cleaning fixture group 101 is not provided with a cleaning component 140; the number of full welding components 340 is the same as the number of full welding fixture components 360 in the full welding fixture group 301, and each full welding fixture group 301 is provided with one full welding component 340, or each full welding fixture group 301 is provided with one full welding component 340, and the last full welding fixture group 301 is not provided with a full welding component 340.

[0162] In other words, if there are two cleaning fixture components 160 in the cleaning fixture group 101, then there are also two cleaning components 140; if there are three cleaning fixture components 160, then there are also three cleaning components 140. Similarly, if there are two full welding fixture components 360 in the full welding fixture group 301, then there are also two full welding components 340; and if there are three full welding fixture components 360, then there are also three full welding components 340.

[0163] like Figure 7 As shown, in the first embodiment, each cleaning fixture group 101 is provided with a corresponding cleaning component 140, and the last cleaning fixture group 101 is not provided with a corresponding cleaning component 140, or each full welding fixture group 301 is provided with a corresponding full welding component 340, and the last full welding fixture group 301 is not provided with a corresponding full welding component 340.

[0164] See Figure 7 ,by Figure 7Taking the cleaning equipment 100 as an example, each cleaning fixture group 101 has three cleaning fixture components 160. In the first direction, the first turntable 112 is divided into four regions corresponding to the included angle of adjacent cleaning fixture groups 101, defined as the head region, the first middle region, the second middle region, and the tail region. Within each first preset time period, each cleaning fixture group 101 moves from one region in the first direction to the next adjacent region. The head region, the first middle region, and the second middle region are each equipped with a cleaning component 140. During the flow, the first turntable 112 rotates 90° each time, rotating the angle interval (i.e., the first included angle) between adjacent cleaning fixture groups 101. Taking three cylindrical batteries to be cleaned as an example, the cleaning fixture group 101 containing the three cylindrical batteries to be cleaned first enters the first end area. The cleaning component 140 in the first end area can clean one of the three cylindrical batteries to be cleaned, such as the first or the third. Then the whole group enters the first intermediate area. The cleaning component 140 in the first intermediate area can clean the second of the three cylindrical batteries to be cleaned. Then the whole group enters the second intermediate area. The cleaning component 140 in the second intermediate area can clean the third or the first of the three cylindrical batteries to be cleaned. Finally, the whole group enters the tail end area. All three cylindrical batteries entering the tail end area are cleaned and can be unloaded and loaded in the tail end area.

[0165] by Figure 7 Taking a full welding equipment 300 as an example, each full welding fixture group 301 has three full welding fixture components 360. In the first direction, the second turntable 312 is divided into four regions corresponding to the included angle of adjacent full welding fixture groups 301, defined as the head region, the first middle region, the second middle region, and the tail region. Within each first preset time period, each full welding fixture group 301 moves from one region in the first direction to the next adjacent region, and the head region, the first middle region, and the second middle region are each equipped with a full welding component 340. During the flow process, the second turntable 312 rotates 90° each time, rotating the angle interval (i.e., the first included angle) between adjacent full welding fixture groups 301. Taking three cylindrical batteries awaiting full welding as an example, the full welding fixture group 301 containing the three cylindrical batteries first enters the first end area. The full welding component 340 in the first end area can perform full welding on one of the three cylindrical batteries, such as the first or the third. Then the whole group enters the first intermediate area. The full welding component 340 in the first intermediate area can perform full welding on the second of the three cylindrical batteries. Then the whole group enters the second intermediate area. The full welding component 340 in the second intermediate area can perform full welding on the third or the first of the three cylindrical batteries. Finally, the whole group enters the tail end area, and all three cylindrical batteries entering the tail end area are fully welded and can be unloaded and loaded in the tail end area.

[0166] Second embodiment, such as Figure 8 As shown, each cleaning fixture group 101 is provided with a corresponding cleaning component 140, or each full welding fixture group 301 is provided with a corresponding full welding component 340.

[0167] See Figure 8 ,by Figure 8 Taking the cleaning equipment 100 as an example, each cleaning fixture group 101 has three cleaning fixture components 160. In the first direction, the first turntable 112 is divided into three regions corresponding to the included angles of adjacent cleaning fixture groups 101, defined as the head region, the middle region, and the tail region, respectively. Within each first preset time period, each cleaning fixture group 101 moves from one region in the first direction to the next adjacent region, and each of the head region, the middle region, and the tail region is equipped with a corresponding cleaning component 140. During the rotation process, the first turntable 112 rotates each time the angular interval between adjacent cleaning fixture groups 101 (i.e., the first... (One included angle), that is, rotate 120°. Taking three cylindrical batteries to be cleaned as an example, the cleaning fixture group 101 containing the three cylindrical batteries to be cleaned first enters the first end area. The cleaning component 140 in the first end area can clean one of the three cylindrical batteries to be cleaned, such as the first or the third. Then the whole group enters the middle area. The cleaning component 140 in the middle area can clean the second of the three cylindrical batteries to be cleaned. Then the whole group enters the tail end area. The cleaning component 140 in the tail end area can clean the third or the first of the three cylindrical batteries to be cleaned, and loading and unloading can be performed in the tail end area.

[0168] by Figure 8Taking the full welding equipment 300 as an example, each full welding fixture group 301 has three full welding fixture components. In the first direction, the second turntable 312 is divided into three regions corresponding to the included angle of adjacent full welding fixture groups 301, defined as the first end region, the middle region, and the last end region, respectively. Within each first preset time period, each full welding fixture group 301 moves from one region in the first direction to the next adjacent region, and the first end region, the middle region, and the last end region are each equipped with a full welding component 340. During the flow process, the second turntable 312 rotates each time the angular interval between adjacent full welding fixture groups 301 (i.e., the first... (Including angle), that is, rotate 120°. Taking three cylindrical batteries to be fully welded as an example, the full welding fixture group 301 containing the three cylindrical batteries to be fully welded first enters the first end area. The full welding component 340 in the first end area can perform full welding on one of the three cylindrical batteries to be fully welded, such as the first or the third. Then the whole group enters the middle area. The full welding component 340 in the middle area can perform full welding on the second of the three cylindrical batteries to be fully welded. Then the whole group enters the tail end area. The full welding component 340 in the tail end area can perform full welding on the third or the first of the three cylindrical batteries to be fully welded. Loading and unloading can be performed in the tail end area.

[0169] Therefore, after multiple first predetermined times and multiple second predetermined times, each cleaning fixture group 101 and each full welding fixture group 301 can achieve the complete cleaning of multiple cylindrical batteries to be cleaned and the complete full welding of multiple cylindrical batteries to be fully welded within the group. During the overall flow of the first conveying device 110 and the second conveying device 310, the cleaning of multiple cylindrical batteries to be cleaned and the full welding of multiple cylindrical batteries to be fully welded can be achieved simultaneously, which can further improve the cleaning efficiency of the cleaning equipment 100 and the full welding efficiency of the full welding equipment 300.

[0170] like Figure 9 As shown, according to some embodiments of this application, the first cam groove has a first trajectory segment and a second trajectory segment, the height difference between the second trajectory segment and the first trajectory segment is consistent with the movement stroke of the first lifting member, and the extension angle of the first trajectory segment is less than or equal to the first included angle; the second cam groove has a third trajectory segment and a fourth trajectory segment, the height difference between the fourth trajectory segment and the third trajectory segment is consistent with the movement stroke of the cleaning fixture, and the extension angle of the third trajectory segment is less than or equal to the first included angle.

[0171] It should be pointed out that, Figure 9 The motion trajectory shown corresponds to Figure 8 The movement trajectories of the first lifting member and the cleaning fixture in the second embodiment shown.

[0172] Specifically, the first turret 111 has an annular first cam groove and a second cam groove. At least a portion of the first lifting member extends into the first cam groove, and at least a portion of the cleaning clamp extends into the second cam groove. The height difference between the first and second track segments can drive the first lifting member to move along the axial direction of the cylindrical battery. For example, from the first track segment to the second track segment (in the direction of movement), the first lifting member rises; from the second track segment to the first track segment (in the direction of movement), the first lifting member descends. The height difference between the third and fourth track segments can drive the cleaning clamp to clamp or release the cylindrical battery. For example, from the third track segment to the fourth track segment (in the direction of movement), the cleaning clamp clamps the cylindrical battery; from the fourth track segment to the third track segment (in the direction of movement), the cleaning clamp releases the cylindrical battery.

[0173] It should be noted that, see Figure 9 As shown, Figure 9 In the embodiment shown, the extension angle of the first trajectory segment and the third trajectory segment is less than the first included angle. When the first turntable 112 rotates within the angle range of 120°-360°, the cylindrical battery can be cleaned. When the first turntable 112 rotates within the angle range of 0°-120°, the cleaning fixture releases the battery and the first lifting component descends first. Then, the cylindrical battery is unloaded after cleaning. When the cylindrical battery is loaded for cleaning, the cleaning fixture clamps the cylindrical battery and the first lifting component lifts it.

[0174] Therefore, the extension angles of the first and third trajectory segments can be made more reasonable. During the overall movement and stopping process, the cleaning fixture group 101 containing the cylindrical battery to be cleaned can always maintain the state of clamping the cylindrical battery. The cylindrical battery after cleaning and the cylindrical battery to be cleaned can be loaded and unloaded and clamped and released synchronously within a first included angle range, thereby improving the working stability and reliability of the cleaning equipment 100.

[0175] According to some embodiments of this application, the third cam groove has a fifth trajectory segment and a sixth trajectory segment, the height difference between the fifth trajectory segment and the sixth trajectory segment is consistent with the movement stroke of the second lifting member, and the extension angle of the fifth trajectory segment is less than or equal to the first included angle; the fourth cam groove has a seventh trajectory segment and an eighth trajectory segment, the height difference between the seventh trajectory segment and the eighth trajectory segment is consistent with the movement stroke of the full welding fixture, and the extension angle of the seventh trajectory segment is less than or equal to the first included angle.

[0176] It should be pointed out that, Figure 9 The motion trajectory shown corresponds to Figure 8 The movement trajectory of the second lifting member and the full welding fixture in the second embodiment shown.

[0177] Specifically, the second turret 311 has a third and a fourth annular cam groove. At least a portion of the second lifting member extends into the third cam groove, and at least a portion of the full-welding fixture extends into the fourth cam groove. The height difference between the fifth and sixth trajectory segments can drive the second lifting member to move along the axial direction of the cylindrical battery. For example, from the fifth to the sixth trajectory segment (in the direction of movement), the second lifting member rises; from the sixth to the fifth trajectory segment (in the direction of movement), the second lifting member descends. The height difference between the seventh and eighth trajectory segments can drive the full-welding fixture to clamp or release the cylindrical battery. For example, from the seventh to the eighth trajectory segment (in the direction of movement), the full-welding fixture clamps the cylindrical battery; from the eighth to the seventh trajectory segment (in the direction of movement), the full-welding fixture releases the cylindrical battery.

[0178] It should be noted that, see Figure 9 As shown, Figure 9 In the embodiment shown, the extension angles of the fifth and seventh trajectory segments are smaller than the first included angle. When the second turntable 312 rotates within the range of 120°-360°, full welding of the cylindrical battery can be performed. When the second turntable 312 rotates within the range of 0°-120°, the battery is first released by the full welding fixture and the second lifting component is lowered. Then, the cylindrical battery is unloaded after full welding. After the cylindrical battery is loaded, the full welding fixture clamps the cylindrical battery and the second lifting component lifts it.

[0179] Therefore, the extension angles of the fifth and seventh trajectory segments can be made more reasonable. During the overall process of moving and stopping, the full welding fixture group 301, where the cylindrical battery to be fully welded is located, can always maintain the state of clamping the cylindrical battery. The cylindrical battery after full welding and the cylindrical battery to be fully welded can be loaded and unloaded and clamped and released synchronously within a first included angle range, thereby improving the working stability and reliability of the full welding equipment 300.

[0180] like Figure 7 and Figure 8 As shown, according to some embodiments of this application, a plurality of cleaning fixture components 160 within each cleaning fixture group 101 are defined as the first fixture to the Nth fixture in sequence. The cleaning component 140 corresponding to the previous cleaning fixture group 101 is either adjacent to the first fixture within the group or located away from the first fixture within the group compared to the cleaning component 140 corresponding to the next cleaning fixture group 101. The full welding fixture components 360 within each full welding fixture group 301 are defined as the first fixture to the Nth fixture in sequence. The full welding component 340 corresponding to the previous full welding fixture group 301 is either adjacent to the first fixture within the group or located away from the first fixture within the group compared to the full welding component 340 corresponding to the next full welding fixture group 301.

[0181] Among them, such as Figure 7As shown, in the first embodiment, a cleaning assembly 140 or a full-welding assembly 340 is provided in the first end region, the first intermediate region, and the second intermediate region, such as... Figure 6 As shown, the first, middle and last regions are each equipped with a full welding assembly 340 or a cleaning assembly 140.

[0182] Specifically, the number of cleaning fixture components 160 in each cleaning fixture group 101 is equal to the total number of cleaning components 140, so that multiple cylindrical batteries in a group can be cleaned sequentially as they flow through multiple areas. The number of full soldering fixture components 360 in each full soldering fixture group 301 is equal to the total number of full soldering components 340, so that multiple cylindrical batteries in a group can be fully soldered sequentially as they flow through multiple areas.

[0183] Furthermore, such as Figure 7 As shown, in some embodiments, each cleaning fixture group 101 includes a first fixture, a second fixture, and a third fixture arranged sequentially in a first direction, corresponding to three cleaning components 140. The cleaning components 140 corresponding to the preceding cleaning fixture group 101 are arranged with the first fixture in the adjacent group being opposite to the cleaning components 140 in the following cleaning fixture group 101. That is, the first fixture of the cleaning fixture group 101 located in the first end area is opposite to the cleaning components 140, while the second fixture of the cleaning fixture group 101 in the first intermediate area is opposite to the cleaning components 140, and the third fixture of the cleaning fixture group 101 in the second intermediate area is opposite to the cleaning components 140.

[0184] like Figure 8 As shown, in some other embodiments, each cleaning fixture group 101 includes a first fixture, a second fixture, and a third fixture arranged sequentially in a first direction, corresponding to three cleaning components 140. The cleaning components 140 corresponding to the previous cleaning fixture group 101 are located further away from the first fixture in the group than the cleaning components 140 corresponding to the next cleaning fixture group 101. That is, the third fixture of the fixture group located in the first region is opposite to the cleaning component 140, the second fixture of the cleaning fixture group 101 in the middle region is opposite to the cleaning component 140, and the first fixture of the cleaning fixture group 101 in the tail region is opposite to the cleaning component 140.

[0185] In this way, by reasonably setting the relative positions of multiple cleaning components 140 on different areas of the first turntable 112 and the corresponding cleaning fixture group 101, the multiple cylindrical batteries to be cleaned in each group can be cleaned completely after passing through multiple areas of the first turntable 112. This not only makes the spacing between the multiple cleaning components 140 more reasonable, reduces the difficulty of arrangement, reduces the probability of mutual interference, and improves the cleaning accuracy, but also makes reasonable use of the space around the first turntable 112, so that the overall layout of the cleaning equipment 100 is more compact and can further improve the space occupation.

[0186] Or such as Figure 7 As shown, in some embodiments, each full-welding fixture group 301 includes a first fixture, a second fixture, and a third fixture arranged sequentially in a first direction, corresponding to three full-welding components 340. The full-welding component 340 corresponding to the previous full-welding fixture group 301 is adjacent to the full-welding component 340 in the next full-welding fixture group 301. That is, the first fixture of the full-welding fixture group 301 located in the first end area is opposite to the full-welding component 340, while the second fixture of the full-welding fixture group 301 in the first middle area is opposite to the full-welding component 340, and the third fixture of the full-welding fixture group 301 in the second middle area is opposite to the full-welding component 340.

[0187] like Figure 8 As shown, in some other embodiments, each full-welding fixture group 301 includes a first fixture, a second fixture, and a third fixture arranged sequentially in a first direction, corresponding to three full-welding components 340. The full-welding component 340 corresponding to the first full-welding fixture group 301 is located further away from the first fixture in the group than the full-welding component 340 corresponding to the second full-welding fixture group 301. That is, the third fixture of the fixture group located in the first region is opposite to the full-welding component 340, the second fixture of the full-welding fixture group 301 in the middle region is opposite to the full-welding component 340, and the first fixture of the full-welding fixture group 301 in the tail region is opposite to the full-welding component 340.

[0188] In this way, by reasonably setting the relative positions of multiple fully welded components 340 on different areas of the first turntable 112 and the corresponding fully welded fixture group 301, the multiple cylindrical batteries in each group undergoing full welding can be fully welded after passing through multiple areas of the second turntable 312. This not only makes the spacing between the multiple fully welded components 340 more reasonable, reduces the difficulty of arrangement, reduces the probability of mutual interference, and improves the full welding accuracy, but also makes reasonable use of the space around the second turntable 312, so that the overall layout of the full welding equipment 300 is more compact, and can further improve the space occupation.

[0189] In summary, the same set of cylindrical cells can be cleaned sequentially when passing through the first turntable 112 and fully welded sequentially when passing through the second turntable 312. Multiple sets of cylindrical cells can be processed simultaneously on the first turntable 112 or the second turntable 312, thereby increasing the number of cylindrical cells processed at the same time and improving production efficiency. Furthermore, the sequential processing of multiple cylindrical cells within multiple sets of cylindrical cells can reduce the probability of interference and improve processing accuracy.

[0190] Furthermore, it is understandable that in existing technologies, pre-welding equipment can also be linear pre-welding equipment. Although this can meet the requirements of high production cycles, due to the size limitations of cylindrical batteries, the fixtures, pre-welding galvanometers, etc., need to be made very large, occupying a lot of space and resulting in low laser utilization of the pre-welding galvanometer. Currently, common battery shapes include prismatic, pouch, and cylindrical batteries. Cylindrical batteries have the advantage of a regular shape compared to the other two, so the industry often uses cam turret structures to manufacture equipment, realizing a production mode of processing while handling materials (such as the cleaning equipment 100 and pre-welding equipment 200 of this application). This solution has the characteristics of compact equipment structure and high laser utilization, which are also unique processing advantages of cylindrical batteries.

[0191] However, for sealing nail welding, although laser cleaning and full laser welding can be achieved using a cam turret, the pre-welding equipment 200 involves a nail-mounting process, which is difficult to perform on the turret. This is because in high-production-rate equipment, the material vibration during cam turret operation is significant, and since the sealing nails are relatively light, they can be shaken out of the battery during cam turret operation, resulting in a very high risk of short circuits. Therefore, most current sealing welding solutions primarily use linear equipment. However, with increasingly higher production rates, especially for large cylindrical batteries, not only do the fixtures of the pre-welding equipment need to be made very large, but the row of pre-welding galvanometers at the pre-welding station also makes the equipment very large. After the cylindrical battery is in place, there is also a process of positioning pressure plates pressing down and rising, so the laser utilization rate of linear equipment is generally <30%. How to design a compact equipment structure, with different structures for different processes, to achieve precise and efficient sealing nail welding is an urgent problem to be solved in cylindrical battery production.

[0192] In this application, both laser cleaning and laser full welding are achieved using a cam turret, which improves the laser utilization rate during both processes. The positioning and clamping auxiliary actions of the cylindrical battery during laser cleaning and full welding are coupled with the loading and unloading actions. During loading, the cylindrical battery can be simultaneously lifted, clamped, and positioned; during unloading, it can be simultaneously released, shortening the time spent outside of cleaning and full welding processes, thereby improving laser utilization. Furthermore, this application uses a pre-welding device 200 with a magnetic drive conveyor belt 210 structure to replace the existing linear pre-welding device 200, which improves the conveying of sealing nails. Stability is improved, and the plate chain line 400 enables docking between the pre-welding equipment 200 and the full-welding equipment 300, as well as between the pre-welding equipment 200 and the cleaning equipment 100. Based on the arbitrary directional layout of the plate chain line 400, the overall compactness of the pre-welding equipment 200 is improved. Assuming that the flow direction of the cylindrical battery between the three devices is roughly along the length of the factory, the arrangement of the plate chain line 400 allows multiple devices within the pre-welding equipment 200 to fully utilize the width of the factory space to achieve a compact setup with higher space utilization. The time it takes for the pre-welded cylindrical battery to move to the pre-welding device 260 can also be shortened, which can correspondingly improve the laser utilization rate of the pre-welding equipment 200 and reduce costs.

[0193] It should be noted that, in the embodiments of this application, Figure 2 and Figure 3 A schematic diagram of the cleaning equipment 100 is shown. Figure 4 and Figure 5 A schematic diagram of the full welding equipment 300 is shown. Figure 7 and Figure 8 The diagrams show the arrangement of the cleaning components 140 within the cleaning equipment 100 or the arrangement of the full welding components 340 within the full welding equipment 300 in two embodiments. Figure 9 The diagram shows the motion trajectory of the cleaning fixture and the first lifting component of the cleaning equipment 100 or the motion trajectory of the full welding fixture and the second lifting component of the full welding equipment 300.

[0194] in, Figure 2 and Figure 3 The figure shows the cleaning assembly 140, the first turntable 112, the first turret 111, the cleaning fixture assembly 160, and the first cam divider 150. Figure 4 and Figure 5 The figure shows the full-welding assembly 340, the second turntable 312, the second turret 311, the full-welding fixture assembly 360, and the second cam divider. Figure 7 and Figure 8In the diagram, when used as a schematic diagram of the arrangement of cleaning components 140 within the cleaning equipment 100, the figure shows cleaning fixture assembly 101, cleaning components 140, and cleaning fixture assembly 160. When used as a schematic diagram of the arrangement of full welding components 340 within the full welding equipment 300, the figure shows full welding fixture assembly 301, full welding components 340, and full welding fixture assembly 360. Figure 9 In the diagram, when used as a schematic diagram of the movement trajectory of the cleaning fixture and the first lifting component within the cleaning equipment 100, the upper trajectory line is the movement trajectory line of the cleaning fixture, and the lower trajectory line is the movement trajectory line of the first lifting component. When used as a schematic diagram of the movement trajectory of the full welding fixture and the second lifting component within the full welding equipment 300, the upper trajectory line is the movement trajectory line of the full welding fixture, and the lower trajectory line is the movement trajectory line of the second lifting component.

[0195] The cleaning assembly 140 may include a cleaning galvanometer module and a cleaning camera module, with the optical paths of the cleaning galvanometer module and the cleaning camera module being coaxial.

[0196] Specifically, the optical paths of the cleaning camera module and the cleaning galvanometer module are coaxial, enabling the cleaning camera module to provide coaxial visual guidance to the cleaning galvanometer module. That is, after the cleaning camera module captures the position of the injection hole, the cleaning galvanometer module can directly perform laser cleaning at the position captured by the cleaning camera module, so as to accurately determine the location of the injection hole area through visual guidance and further perform laser cleaning.

[0197] In this way, on the one hand, laser cleaning is achieved through coaxial vision guidance. After the position of the injection hole is captured by taking a picture, the cleaning galvanometer module and the cylindrical battery do not need to be moved, which can reduce the movement error caused by the movement of the cleaning components, thereby improving the laser cleaning accuracy and effect. On the other hand, during the vision guidance process, not only can the position that needs to be laser cleaned be determined, but also the incoming material inspection (such as: whether there are glue nails, whether there is electrolyte dirt, etc.) can be realized, and the requirements for the mechanical precision of the cleaning fixture and the consistency of the incoming cylindrical battery can be reduced.

[0198] Similarly, the fully soldered component 340 may include a fully soldered galvanometer module and a fully soldered camera module, with the optical paths of the fully soldered galvanometer module and the fully soldered camera module being coaxial.

[0199] Specifically, the optical paths of the full-weld camera module and the full-weld galvanometer module are coaxial, enabling the full-weld camera module to provide coaxial visual guidance to the full-weld galvanometer module. That is, after the full-weld camera module captures the position of the injection hole, the full-weld galvanometer module can directly perform laser full welding at the position captured by the full-weld camera module, so as to accurately determine the location of the injection hole area through visual guidance and further perform laser full welding.

[0200] In this way, on the one hand, laser full welding is achieved through coaxial vision guidance. After the position of the injection hole is captured by taking a picture, the full welding galvanometer module and the cylindrical battery do not need to be moved. This can reduce the movement error caused by the movement of the full welding components, thereby improving the accuracy and effect of laser full welding. On the other hand, during the vision guidance process, not only can the position that needs to be laser full welding be determined, but also the incoming material inspection can be carried out (such as: whether there are sealing nails, whether there is electrolyte contamination, etc.). This can also reduce the requirements for the mechanical precision of the full welding fixture and the consistency of the incoming cylindrical battery materials.

[0201] Below, refer to Figure 1 The specific workflow of the sealing nail welding line 1000 in the embodiments of this application will be described in detail.

[0202] The feeding line 410 has a main feeding port and two feeding outlets. The loading line 420 and unloading line 430 each have two lines. The unloading line 440 has two unloading inlets and a main unloading outlet. Correspondingly, there are two cleaning devices 100, two pre-welding devices 200, and two full-welding devices 300, so as to form two cylindrical battery processing paths.

[0203] In this process, the production cycle of the two cylindrical battery processing paths is the same. The batteries enter the two cleaning devices 100 from the feeding line 410. After being scanned, the cylindrical batteries to be cleaned enter the first turntable 112. The first turntable 112 transports a group of cylindrical batteries (three) at a time and flows through the three cleaning components 140 in sequence to complete the sequential cleaning of the three cylindrical batteries in a group. That is, the first turntable 112 can clean three groups of cylindrical batteries at the same time. Each time, a group of cylindrical batteries to be cleaned is loaded and a group of cylindrical batteries is unloaded to complete the cleaning of the cylindrical batteries.

[0204] Furthermore, multiple sets of cleaned cylindrical batteries can be pre-stored on the feeding line 420. A pulsator is set between the feeding line 420 and the pre-welding equipment 200. The pulsator controls the feeding of multiple cylindrical batteries to be pre-welded at equal intervals on each pre-welding equipment 200. After the pre-welding equipment 200 completes the nailing of the sealing nail and the pre-welding of the sealing nail, the pre-welded cylindrical batteries can be discharged at equal intervals to the unloading line 430 through another pulsator control.

[0205] Multiple sets of pre-welded cylindrical batteries can also be pre-stored on the unloading line 430. The pre-welded cylindrical batteries enter the second turntable 312. The second turntable 312 transports one set of cylindrical batteries (three) at a time and flows through three fully welded components 340 in sequence to complete the full welding of the three cylindrical batteries in one set. That is, the second turntable 312 can perform full welding of three sets of cylindrical batteries at the same time. Each time, a set of cylindrical batteries to be fully welded is loaded and a set of fully welded cylindrical batteries is unloaded to the unloading line 440.

[0206] After the fully welded cylindrical batteries enter through the two discharge inlets and are returned, they are removed through the main outlet from the sealing nail welding line 1000.

[0207] Other configurations and operations of the sealing nail welding line 1000 according to the embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0208] 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 this application. 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.

[0209] Although embodiments of this application 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 this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A sealing stitch welding line for a cylindrical battery, characterized by, include: A cleaning device (100) has a first conveying device (110) configured to operate for a first set time to convey a cylindrical battery to be cleaned, and to pause for a second set time to clean the filling holes of the cylindrical battery to be cleaned. A pre-welding device (200) is located downstream of the cleaning device (100). The pre-welding device (200) includes a magnetic drive conveyor belt (210) adapted to receive the cylindrical battery that has been cleaned by the cleaning device (100). The pre-welding device (200) is used to pre-weld sealing nails onto the cleaned cylindrical battery. A full-welding device (300) is located downstream of the cleaning device (100). The full-welding device (300) has a second conveying device (310), which is configured to run for a first set time to convey pre-welded cylindrical batteries and pause for a second set time to ensure that the liquid injection hole area of ​​the pre-welded cylindrical batteries is fully welded. The first conveying device (110) and the second conveying device (310) cycle through the cylindrical batteries according to the first set time and the second set time. in The full welding equipment (300) includes: multiple full welding components (340), multiple full welding fixture assemblies (360), and a second cam divider. The full welding components (340) are arranged circumferentially along the second conveying device (310), which is connected to the second cam divider. The full welding fixture assemblies (360) are divided into multiple full welding fixture groups (301) circumferentially on the second turntable (312) of the second conveying device (310). The number of full welding fixture assemblies (360) in each full welding fixture group (301) is at least... Two, the angular interval between two adjacent full welding fixture groups (301) is the first included angle, the second cam divider is used to drive the second conveying device (310) to move according to the first included angle, the second turntable (312) is divided into multiple regions along the first direction according to the first included angle, and is defined as the first end region, at least one middle region and the tail end region in sequence, and the first end region and the middle region are both provided with the full welding component (340), or the first end region, the middle region and the tail end region are all provided with the full welding component (340).

2. The seal stitch welding line of a cylindrical battery according to claim 1, characterized by, The sealing nail welding line further includes a plate chain line (400), which is disposed between the cleaning device (100) and the pre-welding device (200), and between the pre-welding device (200) and the full-welding device (300), and the plate chain line (400) is adapted to buffer cylindrical batteries at different stages.

3. The seal stitch welding line of a cylindrical battery according to claim 2, characterized by, The plate chain line (400) includes a feeding line (410) and a discharging line (440). The feeding line (410) has a main feeding port and at least one feeding outlet. The feeding outlet is connected to the first feeding device (120) of the cleaning equipment (100). The discharging line (440) has a main discharging port and at least one discharging inlet. The discharging inlet is connected to the first unloading device (320) of the welding equipment (300).

4. The seal stitch welding line of a cylindrical battery according to claim 3, wherein The plate chain line (400) further includes at least one feeding line (420) and at least one unloading line (430). The feeding inlet of the feeding line (420) is connected to the second unloading device (130) of the cleaning equipment (100). The feeding outlet of the feeding line (420) is connected to the second feeding device (220) of the pre-welding equipment (200). The unloading inlet of the unloading line (430) is connected to the third unloading device (230) of the pre-welding equipment (200). The unloading outlet of the unloading line (430) is connected to the third feeding device (330) of the full welding equipment (300).

5. The seal stitch welding line of a cylindrical battery according to claim 4, wherein At least the second feeding device (220) and the third unloading device (230) are constructed as impellers.

6. The sealing pin welding line of the cylindrical battery according to claim 1, characterized in that, The pre-welding equipment (200) includes a nailing device (250) and a cover device (240), the cover device (240) being located upstream of the nailing device (250) and adapted to cover the cylindrical battery with a protective cover at the end of the cylindrical battery having an injection hole before nailing the cylindrical battery.

7. The sealing pin welding line of the cylindrical battery according to claim 6, characterized in that, The pre-welding equipment (200) further includes a pre-welding device (260) and a lower cover device (270). The pre-welding device (260) and the lower cover device (270) are sequentially arranged downstream of the upper nail device (250). The lower cover device (270) is adapted to remove the protective cover located on the cylindrical battery after the pre-welding of the cylindrical battery is completed.

8. The sealing pin welding line of the cylindrical battery according to any one of claims 1-7, characterized in that, The cleaning equipment (100) includes: a plurality of cleaning components (140) and a plurality of cleaning clamp assemblies (160). The cleaning components (140) are arranged circumferentially along the first conveying device (110). The cleaning clamp assembly (160) includes a cleaning clamp and a first lifting member. The cleaning clamp is used to hold the cylindrical battery to be cleaned, and the first lifting member is used to push the cylindrical battery out of the cup. The full-welding fixture assembly (360) includes a full-welding fixture and a second lifting member. The full-welding fixture is used to hold the cylindrical battery to be cleaned, and the second lifting member is used to push the cylindrical battery out of the cup.

9. The sealing pin welding line of the cylindrical battery according to claim 8, characterized in that, The first conveying device (110) includes: a first turret (111) and a first turntable (112). The plurality of cleaning clamp assemblies (160) are arranged at intervals along the circumference of the first turntable (112). The first turret (111) is sleeved on the first turntable (112). The first turret (111) has a first cam groove and a second cam groove. The first cam groove is used to drive the cleaning clamp to hold the cylindrical battery, and the second cam groove is used to drive the first lifting member. The second conveying device (310) includes a second turret (311) and a second turntable (312). The plurality of full-welding fixture assemblies (360) are arranged at intervals along the circumference of the second turntable (312). The second turret (311) is sleeved on the second turntable (312). The second turret (311) has a third cam groove and a fourth cam groove. The third cam groove is used to drive the full-welding fixture to clamp the cylindrical battery, and the fourth cam groove is used to drive the second lifting member.

10. The sealing pin welding line of the cylindrical battery according to claim 9, characterized in that, The cleaning equipment (100) further includes a first cam divider (150), the first conveying device (110) is connected to the first cam divider (150), the cleaning fixture assembly (160) is divided into multiple cleaning fixture groups (101) in the circumference of the first turntable (112), each cleaning fixture group (101) contains at least two cleaning fixture assemblies (160), the angular interval between two adjacent cleaning fixture groups (101) is a first included angle, and the first cam divider (150) is used to drive the first conveying device (110) to move according to the first included angle.

11. The sealing pin welding line of the cylindrical battery according to claim 10, characterized in that, The number of cleaning components (140) is the same as the number of cleaning fixture components (160) in the cleaning fixture group (101), and each cleaning fixture group (101) is provided with one cleaning component (140), or each cleaning fixture group (101) is provided with one cleaning component (140), and the last cleaning fixture group (101) is not provided with a cleaning component (140). The number of the full welding components (340) is the same as the number of the full welding fixture components (360) in the full welding fixture group (301), and each full welding fixture group (301) is provided with one full welding component (340), or each full welding fixture group (301) is provided with one full welding component (340), and the last full welding fixture group (301) is not provided with a full welding component (340).

12. The sealing pin welding line of the cylindrical battery according to claim 9, characterized in that, The first cam groove has a first trajectory segment and a second trajectory segment. The height difference between the second trajectory segment and the first trajectory segment is consistent with the movement stroke of the first lifting member, and the extension angle of the first trajectory segment is less than or equal to the first included angle. The second cam groove has a third trajectory segment and a fourth trajectory segment. The height difference between the fourth trajectory segment and the third trajectory segment is consistent with the movement stroke of the cleaning fixture, and the extension angle of the third trajectory segment is less than or equal to the first included angle.

13. The sealing pin welding line of the cylindrical battery according to claim 9, characterized in that, The third cam groove has a fifth trajectory segment and a sixth trajectory segment. The height difference between the fifth trajectory segment and the sixth trajectory segment is consistent with the movement stroke of the second lifting member, and the extension angle of the fifth trajectory segment is less than or equal to the first included angle. The fourth cam groove has a seventh trajectory segment and an eighth trajectory segment. The height difference between the seventh trajectory segment and the eighth trajectory segment is consistent with the movement stroke of the full welding fixture, and the extension angle of the seventh trajectory segment is less than or equal to the first included angle.

14. The sealing pin welding line of the cylindrical battery according to claim 10, characterized in that, Each cleaning fixture group (101) is defined as a plurality of cleaning fixture components (160) sequentially as the first fixture to the Nth fixture. The cleaning component (140) corresponding to the previous cleaning fixture group (101) is either adjacent to the first fixture in the group or far away from the first fixture in the group compared to the cleaning component (140) corresponding to the next cleaning fixture group (101). Each full-weld fixture group (301) is defined as having multiple full-weld fixture components (360) sequentially as the first fixture to the Nth fixture. The full-weld component (340) corresponding to the previous full-weld fixture group (301) is either adjacent to the first fixture in the group or far away from the first fixture in the group compared to the full-weld component (340) corresponding to the next full-weld fixture group (301).

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