Sealing nail welding line of cylindrical battery

Abstract

The invention relates to the technical field of battery processing, and discloses a sealing nail welding line of a cylindrical battery, a first conveying device is configured to run for a first set time to convey a to-be-cleaned cylindrical battery and stop for a second set time to clean a liquid injection hole of the to-be-cleaned cylindrical battery, and pre-welding equipment is located at the downstream of cleaning equipment; the pre-welding equipment comprises a magnetic drive conveying belt, the magnetic drive conveying belt is suitable for bearing the cylindrical batteries cleaned by the cleaning equipment, the pre-welding equipment is used for conducting sealing nail pre-welding on the cleaned cylindrical batteries, and the full-length welding equipment is located on the downstream of the cleaning equipment and provided with a second conveying device. And the second conveying device is configured to run for a first set time to convey the pre-welded cylindrical battery and stop for a second set time to enable a liquid injection hole area of the pre-welded cylindrical battery to be fully welded. Therefore, the laser utilization rate can be improved, the machining cost can be reduced, the occupied space can be reduced, and the overall safety and reliability of the sealing nail welding line can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cylindrical battery processing, in particular to a sealing pin welding line of cylindrical battery. BACKGROUND

[0002] In the related art, after the liquid injection and chemical formation of the cylindrical battery are completed, the liquid injection hole of the cylindrical battery needs to be sealed. However, in the sealing pin welding process, the laser utilization rate of the welding equipment is low during the cleaning process of the liquid injection hole and the full welding process of the liquid injection hole. At the same time, it is difficult to place the sealing pin in the liquid injection hole area, the precision is low, and it will also affect the production efficiency and production rhythm. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a sealing pin welding line of cylindrical battery, which has a higher laser utilization rate and high pin placement accuracy, thereby improving production efficiency and production rhythm.

[0004] The present application discloses a sealing pin welding line of cylindrical battery, comprising: a cleaning device, a pre-welding device and a full-welding device, the cleaning device has a first conveying device configured to run for a first set time to convey cylindrical batteries to be cleaned, and stop for a second set time to clean the liquid injection hole of the cylindrical batteries to be cleaned, the pre-welding device is located downstream of the cleaning device, the pre-welding device includes a magnetic drive conveyor belt adapted to receive the cleaned cylindrical batteries from the cleaning device, and the pre-welding device is used for pre-welding sealing pins on the cleaned cylindrical batteries, the full-welding device is located downstream of the cleaning device, the full-welding device has a second conveying device configured to run for a first set time to convey cylindrical batteries that have completed pre-welding, and stop for a second set time to full-weld the liquid injection hole area of the cylindrical batteries that have completed pre-welding, wherein the first conveying device and the second conveying device drive the cylindrical batteries to stop and start in a cycle according to the first set time and the second set time.

[0005] According to the sealing pin welding line of the present application, the cleaning device and the full-welding device can be set to process in a stop-and-go manner, which can improve the laser utilization rate, reduce the processing cost, and realize the compactness and miniaturization of the cleaning device and the pre-welding device, thereby reducing the space occupation. The pre-welding device using the magnetic drive conveyor belt not only can be adapted to the high production rhythm of the cleaning device and the pre-welding device, but also has higher safety, which can improve the safety and reliability of the sealing pin welding line as a whole.

[0006] According to some embodiments of the present application, the sealing pin welding line further comprises a plate chain line, which is arranged between the cleaning device and the pre-welding device, and between the pre-welding device and the full-welding device, and is adapted to buffer cylindrical batteries at different stages.

[0007] In the technical solution, on the one hand, the plate chain line is arranged to buffer the cylindrical batteries in different stages, so that when any of the cleaning device, the full welding device and the pre-welding device is down, the other devices can still continue to process the cylindrical batteries based on the buffered cylindrical batteries, the overall sealing nail welding line can be prevented from being down, and the working stability and reliability can be improved. On the other hand, based on the flexible layout of the plate chain line, the modular multiple devices are connected in series, the space redundancy can be avoided, the space occupation can be improved, and the structure can be simplified.

[0008] According to some embodiments of the present application, the plate chain line comprises: an input line and an output line, the input line has an input total port and at least one input outlet, the input outlet is connected with the first feeding device of the cleaning device, and the output line has an output total port and at least one output inlet, the output inlet is connected with the first discharging device of the full welding device.

[0009] In the technical solution, the input line and the output line are arranged, so that multiple cleaning devices and multiple full welding devices can be arranged side by side, the production quantity per unit time of the sealing nail welding line can be further improved, the production efficiency can be improved, and the space occupation can be improved by arranging multiple groups of devices side by side to realize compact arrangement.

[0010] According to some embodiments of the present application, the plate chain line further comprises: at least one feeding line and at least one discharging line, the feeding inlet of the feeding line is connected with the second discharging device of the cleaning device, the feeding outlet of the feeding line is connected with the second feeding device of the pre-welding device, the discharging inlet of the discharging line is connected with the third discharging device of the pre-welding device, and the discharging outlet of the discharging line is connected with the third feeding device of the full welding device.

[0011] In the technical solution, the number of feeding lines and discharging lines can be arranged based on the number of pre-welding devices to form multiple cylindrical battery processing paths in parallel, and multiple groups of cleaning devices, pre-welding devices and full welding devices form a cylindrical battery processing path, so that the compact arrangement of the sealing nail welding line can be further realized, the production quantity per unit time of the sealing nail welding line can be improved, and the production efficiency can be improved.

[0012] According to some embodiments of the present application, at least the second feeding device and the third discharging device are configured as a wave wheel.

[0013] In the technical solution, the plate chain line is connected with the wave wheel, the cylindrical batteries on the plate chain line can be separated into fixed intervals by the wave wheel, and the connection between the mover of the magnetic drive conveying belt and the cylindrical batteries is similar to the meshing form of gear and rack, so that the connection structure of the wave wheel and the magnetic drive conveying belt is simple, reliable and efficient.

[0014] According to some embodiments of the present application, the pre-welding device comprises a pinning device and a covering device, the covering device is located upstream of the pinning device and is adapted to cover the protective cover on the end of the cylindrical battery having the liquid injection hole before the cylindrical battery is pinned.

[0015] In the above technical solution, the protective cover is installed on the end of the cylindrical battery having the liquid injection hole before the cylindrical battery is pinned, and the protective cover is used to effectively insulate and protect the inside of the cylindrical battery before the pre-welding of the sealing pin, so as to avoid damage to the cylindrical battery caused by current leakage or short circuit during the pre-welding process, and improve the pre-welding safety and quality of the cylindrical battery.

[0016] According to some embodiments of the present application, the pre-welding device further comprises a pre-welding device and a covering device, the pre-welding device and the covering device are sequentially arranged downstream of the pinning device, and the covering device is adapted to remove the protective cover on the cylindrical battery after the pre-welding of the cylindrical battery is completed.

[0017] In the above technical solution, the covering device, the pinning device, the pre-welding device and the covering device are sequentially arranged on the flow path of the cylindrical battery in the pre-welding device, so that the protective cover is covered before the pinning and the protective cover is removed after the pre-welding, which can ensure that the cylindrical battery will not be short-circuited even if the positioning of the sealing pin is poor, the welding is poor, or even the sealing pin moves during the pinning process and the pre-welding process, thereby further improving the safety of the pre-welding equipment and reducing the safety hazard.

[0018] According to some embodiments of the present application, the cleaning device comprises a plurality of cleaning assemblies and a plurality of cleaning clamp assemblies, the cleaning assemblies are arranged along the circumference of the first conveying device, the cleaning clamp assembly comprises a cleaning clamp and a first lifting member, the cleaning clamp is used to clamp the cylindrical battery to be cleaned, and the first lifting member is used to lift the cylindrical battery from the cup; the full-welding device comprises a plurality of full-welding assemblies and a plurality of full-welding clamp assemblies, the full-welding assemblies are arranged along the circumference of the second conveying device, the full-welding clamp assembly comprises a full-welding clamp and a second lifting member, the full-welding clamp is used to clamp the cylindrical battery to be cleaned, and the second lifting member is used to lift the cylindrical battery from the cup.

[0019] In the above technical solution, during the conveying process of the cylindrical battery to be cleaned by the first conveying device, the cleaning clamp assembly can couple the battery loading action with the auxiliary action before the battery cleaning, and couple the battery unloading action with the auxiliary action after the battery cleaning is completed, during the conveying process of the cylindrical battery to be full-welded by the second conveying device, the full-welding clamp assembly can couple the battery loading action with the auxiliary action before the battery full-welding, and couple the battery unloading action with the auxiliary action after the battery full-welding is completed, which can reduce the processing time, speed up the production rhythm, improve the utilization rate of laser, reduce the cost, and improve the production efficiency.

[0020] According to some embodiments of the present application, the first conveying device comprises a first turret and a first turntable, a plurality of cleaning clamp assemblies are arranged on the first turntable in a circumferential direction 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 clamp to clamp the cylindrical battery, and the second cam groove is used to drive a first lifting piece; the second conveying device comprises a second turret and a second turntable, a plurality of full-welding clamp assemblies are arranged on the second turntable in a circumferential direction 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 clamp to clamp the cylindrical battery, and the fourth cam groove is used to drive a second lifting piece.

[0021] In the above technical solution, through the cooperation of the first turntable, the first turret and the cleaning clamp assembly, the feeding action of the cylindrical battery and the pre-cleaning auxiliary action are coupled, and the discharging action of the battery and the post-cleaning auxiliary action are coupled, so as to simplify the production rhythm and improve the production efficiency. At the same time, the cam turret layout form can improve the space occupation of the cleaning equipment, reduce the space requirement of the factory building, and reduce the layout cost. Through the cooperation of the second turntable, the second turret and the full-welding clamp assembly, the feeding action of the cylindrical battery and the pre-full-welding auxiliary action are coupled, and the discharging action of the battery and the post-full-welding auxiliary action are coupled, so as to simplify the production rhythm and improve the production efficiency. At the same time, the cam turret layout form can improve the space occupation of the full-welding equipment, reduce the space requirement of the factory building, and reduce the layout cost.

[0022] According to some embodiments of the present application, the cleaning equipment further comprises a first cam divider, the first conveying device is connected with the first cam divider, the cleaning clamp assemblies are divided into a plurality of cleaning clamp groups in a circumferential direction of the first turntable, the number of cleaning clamp assemblies in each cleaning clamp group is at least two, the angle interval between adjacent two cleaning clamp groups is a first included angle, and the first cam divider is used to drive the first conveying device to move in a stop-and-go manner according to the first included angle; the full-welding equipment further comprises a second cam divider, the second conveying device is connected with the second cam divider, the full-welding clamp assemblies are divided into a plurality of full-welding clamp groups in a circumferential direction of the second turntable, the number of full-welding clamp assemblies in each full-welding clamp group is at least two, the angle interval between adjacent two full-welding clamp groups is the first included angle, and the second cam divider is used to drive the second conveying device to move in a stop-and-go manner according to the first included angle.

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

[0024] According to some embodiments of the present application, the number of cleaning assemblies is consistent with the number of cleaning clamp assemblies in the cleaning clamp group, and each cleaning clamp group is provided with one cleaning assembly, or each cleaning clamp group is provided with one cleaning assembly, and the last cleaning clamp group is not provided with a corresponding cleaning assembly; the number of full-welding assemblies is consistent with the number of full-welding clamp assemblies in the full-welding clamp group, and each full-welding clamp group is provided with one full-welding assembly, or each full-welding clamp group is provided with one full-welding assembly, and the last full-welding clamp group is not provided with a corresponding full-welding assembly.

[0025] In the above technical solution, after the first predetermined time and the second predetermined time, the cleaning clamp group and the full-welding clamp group can realize the cleaning of the plurality of cylindrical batteries to be cleaned and the full-welding of the plurality of cylindrical batteries to be full-welded, and the first conveying device and the second conveying device can realize the cleaning of the plurality of cylindrical batteries to be cleaned and the full-welding of the plurality of cylindrical batteries to be full-welded at the same time, 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 the present 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 piece, 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 clamp, 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 angle of the first trajectory segment and the extension angle of the third trajectory segment can be more reasonable, and the cleaning clamp group in which the cylindrical battery to be cleaned is located can always be maintained in a state in which the cylindrical battery is clamped during the overall start-stop process, and the cylindrical battery after cleaning and the cylindrical battery to be cleaned can complete the feeding and discharging and synchronous clamping and releasing within a first included angle range, thereby improving the working stability and reliability of the cleaning equipment.

[0028] According to some embodiments of the present 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 piece, 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 clamp, and the extension angle of the seventh trajectory segment is less than or equal to the first included angle.

[0029] In the technical solution, the extension angles of the fifth trajectory segment and the seventh trajectory segment are more reasonable, and the full-welding fixture group in which the full-welding cylindrical battery is located can be maintained in a state in which the cylindrical battery is clamped during the overall start-stop process, and the cylindrical battery after full-welding and the cylindrical battery to be full-welded can be completed in a first clamping angle range, thereby improving the working stability and reliability of the full-welding device.

[0030] According to some embodiments of the present application, the plurality of cleaning fixture assemblies in each cleaning fixture group are sequentially defined as first fixture to Nth fixture, and the first fixture in the adjacent group is arranged compared with the first fixture in the group away from the cleaning assembly corresponding to the previous cleaning fixture group and the cleaning assembly corresponding to the subsequent cleaning fixture group.

[0031] In the technical solution, the same group of cylindrical batteries can be cleaned in sequence when passing through the first turntable and full-welded in sequence when passing through the second turntable, and multiple groups of cylindrical batteries can be processed on the first turntable or the second turntable at the same time, so that the number of cylindrical batteries processed at the same time is larger, the production efficiency is improved, and the multiple cylindrical batteries in the multiple groups of cylindrical batteries are processed in sequence, which can reduce the interference probability and improve the processing precision.

[0032] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein: Figure 1 is a schematic diagram of a sealing and welding line according to an embodiment of the present application; Figure 2 is a schematic diagram of a cleaning device according to an embodiment of the present application from one angle; Figure 3 is a schematic diagram of a cleaning device according to an embodiment of the present application from another angle; Figure 4 is a schematic diagram of a full-welding device according to an embodiment of the present application from one angle; Figure 5 is a schematic diagram of a full-welding device according to an embodiment of the present application from another angle; Figure 6 is a schematic diagram of a pre-welding device according to an embodiment of the present application; Figure 7 is a schematic diagram of the arrangement position of a cleaning assembly or a full welding assembly according to the first embodiment of the present application; Figure 8 is a schematic diagram of the arrangement position of a cleaning assembly or a full welding assembly according to the second embodiment of the present application; Figure 9 is a schematic diagram of the movement track of a cleaning clamp and a first jacking member of a cleaning assembly or a full welding clamp and a second jacking member of a full welding assembly according to the embodiments of the present application.

[0034] Reference signs: sealing nail welding line 1000, cleaning equipment 100, first conveying device 110, first turret 111, first turntable 112, first feeding device 120, second discharging device 130, cleaning assembly 140, first cam divider 150, cleaning clamp assembly 160, pre-welding equipment 200, magnetic drive conveyor belt 210, second feeding device 220, third discharging device 230, upper cover device 240, upper nail device 250, pre-welding device 260, lower cover device 270, full welding equipment 300, second conveying device 310, second turret 311, second turntable 312, first discharging device 320, third feeding device 330, full welding assembly 340, full welding clamp assembly 360, plate chain line 400, feeding line 410, feeding line 420, discharging line 430, discharging line 440, cleaning clamp group 101, full welding clamp group 301. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms used in disclosing the application, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms used in the description of the disclosed subject matter should not be interpreted as identifying key

[0037] Reference throughout this application to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, nor are they necessarily all mutually exclusive or alternative embodiments.

[0038] In the description of the application, it is necessary to note that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0039] The term "and / or" in this application is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, the character " / " in this application generally represents that the front and rear associated objects have an "or" relationship.

[0040] In the embodiments of the application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are only exemplary and should not constitute any limitation on the application.

[0041] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] In the description of the present application, the first feature "above" or "below" the second feature can include direct contact between the first and second features, or can include indirect contact between the first and second features through another feature therebetween.

[0043] In the description of the present application, the first feature "above", "over" and "on" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher in height than the second feature.

[0044] "Multiple" appearing in the present application means two or more (including two).

[0045] The battery cell can be a secondary battery, which refers to a cylindrical battery cell that can be activated by charging after discharging.

[0046] The processed battery of the embodiments of the present application is a cylindrical battery, which includes a shell in the shape of a cylinder, an end cover, and an electrode assembly. The shell is used to define a receiving space with a mounting port. The electrode assembly and an insulating cover are both arranged in the shell and block the mounting port through the end cover.

[0047] Exemplarily, the shell is generally cylindrical and open at one axial end to form a receiving space with a mounting port. The receiving space can be provided with an electrode assembly and other functional components such as an insulating cover. The end cover is fitted on the mounting port of the shell to isolate the internal environment of the cylindrical battery cell from the external environment. The shape of the end cover is adapted to the shape of the shell. The end cover can be supported by a material with certain hardness and strength (such as aluminum alloy, carbon fiber plate), which can effectively protect the safety and reliability of the internal components of the shell when extruded and collided.

[0048] In some embodiments, the end cover can also be provided with a pressure relief device for relieving the internal pressure when the internal pressure or temperature of the cylindrical battery cell reaches a threshold value. The material of the end cover can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not specially limited in the embodiments of the present application.

[0049] In some embodiments, an insulating cover can also be arranged on the inner side of the end cover, which can be used to isolate the electrical connection components in the shell from the end cover to reduce the risk of short circuit. For example, the insulating cover can be made of plastic, rubber or the like to achieve insulation protection.

[0050] The shell is a component for cooperating with the end cover to form an internal environment of the cylindrical battery cell, wherein the formed internal environment can be used to accommodate the electrode assembly, the electrolyte and other components. The shell and the end cover can be independent components, and the shell can be provided with a mounting port, and the end cover is arranged on the mounting port to cover the opening to form the internal environment of the cylindrical battery cell. The shell can be a cylindrical body.

[0051] The electrode assembly is a component where electrochemical reactions occur in the cylindrical battery cell. One or more electrode assemblies can be contained in the shell. The electrode assembly is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and a separator is usually arranged between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have a part of active material constituting the main body of the electrode assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active material each constitute a tab. The positive tab and the negative tab can be located at one end of the main body or at two ends of the main body respectively. During the charging and discharging process of the cylindrical battery device, the positive active material and the negative active material react with the electrolyte, and the tabs are connected to the electrode terminal to form a current loop.

[0052] It should be noted that the processing process of the cylindrical battery at least includes preparation of the electrode assembly, packaging of the cylindrical battery and testing of the cylindrical battery, and the packaging of the cylindrical battery includes multiple processes such as electrode assembly into the shell, welding of the tab and the output terminal after entering the shell, liquid injection of the cylindrical battery, formation after liquid injection, and plugging of the injection hole.

[0053] It can be understood that the sealing pin welding is a key process for isolating the electrode assembly from the external environment, and the sealing pin welding line generally includes three key processes of injection hole cleaning, pre-welding and full-welding, which need to be correspondingly provided with cleaning equipment, pre-welding equipment and full-welding equipment.

[0054] In the prior art, for the cleaning equipment, the cylindrical battery needs to be positioned and fixed before cleaning, and the cylindrical battery after cleaning needs to be discharged. Taking laser cleaning as an example, the cleaning process mainly includes the actions of feeding, positioning plate positioning, visual guidance, light cleaning, positioning plate resetting and discharging, and the above-mentioned multiple actions need to be performed in sequence, which leads to low processing efficiency, occupies laser time, leads to low laser utilization rate, increases processing cost, and the device quantity is large, the space occupation is large, and the cost is high.

[0055] Similarly, for the full welding equipment, before full welding, the cylindrical battery needs to be positioned and fixed first, and after full welding, the cylindrical battery after full welding needs to be discharged. Taking laser full welding as an example, the full welding process mainly includes the following actions: feeding, positioning plate positioning, visual guidance, light welding, positioning plate resetting and discharging. The above-mentioned multiple actions need to be performed in turn, resulting in low processing efficiency, occupying laser time, resulting in low laser utilization rate, increasing processing cost, and the device quantity is large, the space occupation is large, and the cost is high.

[0056] For the pre-welding equipment, the upper pin action needs to be performed (i.e. placing the sealing pin on the area where the liquid injection hole is located), and the accuracy requirement of placing the sealing pin on the cylindrical battery is high. Using the traditional rotary disc type pre-welding equipment, due to the large rotary inertia of the rotary disc, the sealing pin shakes obviously, and the sealing pin is small in weight and easy to fall off, so it is difficult to realize accurate positioning of the sealing pin, and the production efficiency is limited to 22ppm (i.e. 22 batteries per minute), and the pre-welding adaptability to the cylindrical battery is poor, which cannot meet the use demand of higher production rhythm (such as 150ppm or higher).

[0057] Therefore, the sealing pin welding line of the cylindrical battery is provided. The cleaning equipment cooperates the cleaning assembly, the first conveying device and the cleaning clamp assembly, so that the cylindrical battery to be cleaned moves to the position of the cleaning assembly under the driving of the first conveying device, and the cleaning clamp assembly can complete the positioning and clamping actions at the same time, which can shorten the production rhythm, improve the production efficiency, and according to the first and second set time, the laser utilization rate of the cleaning equipment can be improved, the cost can be reduced, and the compactness of the cleaning equipment can be further realized, and the space occupation is reduced. The full welding equipment cooperates the full welding assembly, the second conveying device and the full welding clamp assembly, so that the cylindrical battery to be full welded moves to the position of the full welding assembly under the driving of the second conveying device, and the full welding clamp assembly can complete the positioning and clamping actions at the same time, which can shorten the production rhythm, improve the production efficiency, and according to the first and second set time, the laser utilization rate of the full welding equipment can be improved, the cost can be reduced, and the compactness of the full welding equipment can be further realized, and the space occupation is reduced. The pre-welding equipment uses a magnetic drive conveyor belt to transfer the material of the cylindrical battery to be pre-welded. The magnetic drive conveyor belt can transfer the sealing pin more stably and reliably, can reduce the difficulty of the sealing pin, improve the accuracy of the sealing pin, and the conveying speed of the magnetic drive conveyor belt is faster, which can meet the demand of higher production rhythm.

[0058] In summary, the cleaning device and full-welding device that can run and stop according to the first and second set time, in combination with the pre-welding device using the magnetic drive conveyor, can improve the utilization rate of laser, reduce the cost, and realize the compactness and miniaturization of the overall production line. On the other hand, under the premise of meeting the higher production rhythm demand, the pinning accuracy can be improved, thereby improving the welding quality of pre-welding and subsequent full-welding.

[0059] Firstly, based on Figures 1-9 The processing flow of the sealing pin welding line 1000 of the cylindrical battery of the embodiment of the application is specifically described.

[0060] The cleaning device 100 includes, from upstream to downstream, a first feeding device 120, a first conveying device 110, and a second discharging device 130 on 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. The first turntable 112 is provided with a plurality of cleaning clamp assemblies 160 arranged at intervals along the circumference of the first turntable 112. The first turntable 112 is power-connected with the first cam divider 150. The cleaning assembly 140 is at least one located on the circumferential side of the first turntable 112.

[0061] The first feeding device 120 receives the cylindrical batteries to be cleaned. The first cam divider 150 drives the first turntable 112 to rotate. The first cam divider 150 can reasonably distribute the running and stopping proportion of the first turntable 112 according to a specific driving angle (such as the angular interval between adjacent tooling groups), i.e., after rotating by one angle according to the driving angle, it stops for a period of time. During the rotation process, the lifting and clamping of the cylindrical batteries to be cleaned can be completed synchronously. During the stopping period, the cylindrical batteries can be cleaned. The cleaning clamp assemblies 160 are arranged on the first turntable 112, and the plurality of cleaning clamp assemblies 160 can be used to assemble the cylindrical batteries and realize the positioning of the cylindrical batteries. The first turret 111 is fixed, and when the first turntable 112 rotates, the first cam groove and the second cam groove on the first turret 111 can drive the first lifting piece and the cleaning clamp, respectively, so that the cylindrical battery can be pushed against the first positioning cover plate, facilitating the positioning of the cylindrical battery by the cleaning assembly 140. The cleaning clamp can clamp the cylindrical battery to reduce the probability of movement of the cylindrical battery during cleaning, improve the positioning accuracy and cleaning accuracy, and the cleaning assembly 140 can be arranged at a reasonable position on the circumferential side of the first turntable 112 to perform laser cleaning on the cylindrical battery. The cleaned cylindrical battery can be transferred to the pre-welding device 200 by the second discharging device 130.

[0062] For example, as shown in Figure 1 , Figure 2As shown in FIG. 3, the first cam divider 150 can have a first output gear, which can be configured as an incomplete gear, while the first rotating disc 112 is provided with a first engaging tooth, and the first output gear is in meshing transmission with the first engaging tooth, so that the first rotating tower 111 can rotate according to a first set time and stop according to a second set time, and the first feeding device 120 and the second discharging device 130 can also be respectively provided with a second engaging tooth and a third engaging tooth, and the second engaging tooth and the third engaging tooth are in meshing transmission with the first engaging tooth, so that the cleaning equipment 100 as a whole can be driven to run and stop according to the first cam divider 150.

[0063] It should be noted that the cleaning equipment 100 of the embodiment of the present application is used for cleaning the liquid injection hole of the cylindrical battery after liquid injection is completed, and after cleaning is completed, the cylindrical battery needs to be transferred to the next device (the pre-welding device 200) for pre-welding of the sealing nail in the liquid injection hole area.

[0064] The pre-welding device 200 includes, from upstream to downstream, the second feeding device 220, the upper cover device 240, the upper nail device 250, the pre-welding device 260, the lower cover device 270 and the third discharging device 230 in sequence on the cylindrical battery transfer path to be pre-welded.

[0065] Among them, the second feeding device 220 receives the cylindrical battery after cleaning (i.e. the cylindrical battery to be nailed), the upper cover device 240 is used to install the protective cover on the end of the cylindrical battery with the liquid injection hole, the upper nail device 250 is used to place the sealing nail to the liquid injection hole, the pre-welding device 260 is used for pre-welding the sealing nail, the lower cover device 270 disassembles the protective cover, and the third discharging device 230 is used to move the pre-welded battery out of the pre-welding device 200.

[0066] It should be noted that the pre-welding device 200 of the embodiment of the present application is used for nailing the sealing nail to the cylindrical battery after cleaning and pre-welding the sealing nail, and after pre-welding is completed, the cylindrical battery needs to be transferred to the next device (the full-welding device 300) for full-welding of the sealing nail.

[0067] The full-welding device 300 includes, from upstream to downstream, the third feeding device 330, the second conveying device 310 and the first discharging device 320 in sequence on the cylindrical battery transfer path to be full-welded, the second conveying device 310 includes the second rotating tower 311 and the second rotating disc 312, the second rotating disc 312 is provided with a plurality of full-welding clamp assemblies 360 arranged along the circumferential direction of the second rotating disc 312, the second rotating disc 312 is in power connection with a second cam divider (not shown in the figure), and the full-welding assembly 340 is at least one located on the circumferential side of the second rotating disc 312.

[0068] The third feeding device 330 is used for receiving the completed pre-welding cylindrical battery (i.e., the cylindrical battery to be fully welded), the second cam divider is used for driving the second turntable 312 to rotate, and the second cam divider can reasonably distribute the running and stopping proportion of the second turntable 312 according to a specific driving angle (for example, the angle interval between adjacent tooling groups) (for example, rotating according to a first set time and stopping according to a second set time), that is, after rotating by an angle according to the driving angle, stopping for a period of time, and in the rotating process, the lifting and clamping of the cylindrical battery to be fully welded can be simultaneously completed, and the full-welding clamping assembly 360 is arranged on the second turntable 312, and a plurality of full-welding clamping assemblies 360 can be used for assembling the cylindrical battery and realizing the positioning of the cylindrical battery, the second turret 311 is fixed, and when the second turntable 312 rotates, the third cam groove and the fourth cam groove on the second turret 311 can drive the second lifting piece and the full-welding clamp respectively, so that the cylindrical battery can be pushed against the second positioning cover plate, facilitating the positioning of the cylindrical battery by the full-welding assembly 340, the full-welding clamp can clamp the cylindrical battery, so as to reduce the probability of movement of the cylindrical battery in the full-welding process and improve the positioning accuracy and full-welding accuracy, and 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.

[0069] Exemplarily, the second cam divider can have a second output gear, the second output gear can be configured as an incomplete gear, the second turntable 312 is provided with a fourth meshing tooth, and the second output gear is in meshing transmission with the fourth meshing tooth, so that the second turret 311 can rotate according to the first set time and stop according to the second set time, and the fifth meshing tooth and the sixth meshing tooth can also be arranged on the third feeding device 330 and the first discharging device 320 respectively, and the fifth meshing tooth and the sixth meshing tooth are in meshing with the fourth meshing tooth, so that the full-welding equipment 300 as a whole can be driven to run and stop according to the second cam divider.

[0070] It can be 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 discharging device 320, the second discharging device 130 and the third discharging device 230 can be in meshing (in no fixed order) through a plurality of groups of meshing teeth to realize power transmission.

[0071] Reference is made below to Figures 1-9 A sealing pin welding line 1000 of a cylindrical battery according to an embodiment of the present application is described.

[0072] As Figure 1 shown, the present application discloses a sealing pin welding line 1000 of a cylindrical battery, which comprises a cleaning equipment 100, a pre-welding equipment 200 and a full-welding equipment 300.

[0073] wherein, in combination Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 6 As shown in the drawings, the cleaning device 100 has a first conveying device 110 configured to run for a first set time to convey the cylindrical battery to be cleaned, and stop for a second set time to allow the injection hole of the cylindrical battery to be cleaned to be cleaned, the 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 cleaned cylindrical battery completed by the cleaning device 100, the pre-welding device 200 is used to seal and pre-weld the completed cleaned cylindrical battery, and the full-welding device 300 is located downstream of the cleaning device 100, the full-welding device 300 has a second conveying device 310 configured to run for a first set time to convey the completed pre-welded cylindrical battery, and stop for a second set time to allow the injection hole area of the completed pre-welded cylindrical battery to be full-welded.

[0074] wherein, the first conveying device 110 and the second conveying device 310 drive the cylindrical battery to stop and start in a cycle according to the first set time and the second set time.

[0075] It should be noted that the first conveying device 110 and the second conveying device 310 can both stop and start according to the time ratio of the first set time and the second set time, and during the travel process (within the first set time), the loading of the cylindrical battery to be cleaned in the cleaning device 100, the unloading of the cleaned cylindrical battery in the cleaning device 100, the loading of the full-welded cylindrical battery in the full-welding device 300, and the unloading of the full-welded cylindrical battery in the full-welding device 300 can be completed, and during the stop process (within the second set time), the cleaning device 100 can clean the cylindrical battery to be cleaned, and the full-welding device 300 can full-weld the cylindrical battery to be full-welded.

[0076] In the prior art, the cleaning device 100 needs to lift the cylindrical battery and clamp the clamp after the cylindrical battery reaches the cleaning position, and these two auxiliary actions need to consume a certain amount of time (such as 3s), that is, these two auxiliary actions occupy 3s of production rhythm, and during these 3s, the cleaning laser of the cleaning device 100 is still in an open state, resulting in a decrease in laser utilization, which increases the cost of the device, and the layout of the existing cleaning device 100 also exacerbates space occupation.

[0077] Similarly, in the prior art, the full-welding device 300 needs to perform the lifting of the cylindrical battery and the clamping of the clamp after the cylindrical battery reaches the full-welding position, and these two auxiliary actions also need to consume a certain amount of time (for example, 3 s), that is, these two auxiliary actions occupy 3 s of the production rhythm, and during these 3 s, the full-welding laser of the full-welding device 300 is still in the open state, which reduces the utilization rate of the laser, increases the cost of the device, and the layout of the existing full-welding device 300 also aggravates the space occupation.

[0078] It can be understood that in the embodiments of the present application, the cleaning device 100 and the full-welding device 300 can perform the feeding and discharging of the cylindrical battery within the first set time, and can simultaneously realize the auxiliary actions such as lifting and clamping of the cylindrical battery, so that the feeding and discharging actions of the cylindrical battery can be coupled with the auxiliary actions before laser cleaning and laser welding, the processing time can be reduced, the production rhythm can be accelerated, the utilization rate of the laser can be improved, the cleaning cost and the full-welding cost can be reduced, and the production efficiency can be improved.

[0079] Further, in the embodiments of the present application, the pre-welding device 200 uses a magnetic drive conveying belt 210 to transport the cylindrical battery, that is, the cleaned cylindrical battery is received into the pre-welding device 200, and the pre-welded battery is removed from the pre-welding device 200. The magnetic drive conveying belt 210 can define a straight or circular cylindrical battery circulation path in the pre-welding device 200. During the circulation process of the cylindrical battery according to the circulation path, the motion stability of the cylindrical battery is higher, the vibration of the sealing pin is smaller, the probability of movement or even falling of the sealing pin with smaller mass is lower, the positioning difficulty of the sealing pin can be reduced, the positioning accuracy can be improved, and further the pre-welding quality can be improved, and the probability of pre-welding point deviation or pre-welding point loss can be reduced.

[0080] It should be noted that in the prior art, a rotary disc type pre-welding device 200 is used for pre-welding of the sealing pin, and the rotary disc has a large moment of inertia, so the sealing pin is easy to detach and fall off. Therefore, the rotary disc type pre-welding device 200 is not suitable for pre-welding of the sealing pin of the cylindrical battery, and in order to reduce the influence of the moment of inertia on the battery pre-welding, the production rhythm of the rotary disc type pre-welding device 200 also needs to be set lower, which can only reach 22 ppm, and cannot be adapted to the high production rhythm (not less than 150 ppm) of the upstream cleaning device 100 and the downstream full-welding device 300. The pre-welding device 200 with the magnetic drive conveying belt 210 structure can not only meet the demand of high production rhythm and match the upstream and downstream cleaning device 100 and full-welding device 300, but also can ensure the pre-welding quality of the pre-welding device 200.

[0081] It can be understood that for the cylindrical battery, the electrode assembly is loaded in the shell, and after the liquid injection is completed, the cylindrical battery is charged, and the end cover with the liquid injection hole of the cylindrical battery leads out the positive and negative electrodes or the shell is directly formed as the negative electrode, resulting in that the distance between the positive and negative electrodes is close, the sealing nail appears offset or tilting, and the cylindrical battery may be short-circuited. The magnetic drive conveying belt 210 of the present application conveys the cylindrical battery and the sealing nail, which can reduce the probability of tilting or offset of the sealing nail, correspondingly reduce the probability of short-circuit of the cylindrical battery, and improve the safety of the pre-welding device 200.

[0082] According to the sealing nail welding line 1000 of the present application, the cleaning device 100 and the full welding device 300 that can be stopped and processed are arranged, the laser utilization rate can be improved, the processing cost can be reduced, the cleaning device 100 and the pre-welding device 200 can be compact and small in size, the space occupation can be reduced, the pre-welding device 200 using the magnetic drive conveying belt 210 is arranged, which can be adapted to the high production rhythm of the cleaning device 100 and the pre-welding device 200, the safety of the pre-welding device 200 is higher, and the safety and reliability of the sealing nail welding line 1000 as a whole can be improved.

[0083] As shown in Figure 1 According to some embodiments of the present application, the sealing nail welding line 1000 further comprises a plate chain line 400, which is arranged 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 is adapted to buffer cylindrical batteries at different stages.

[0084] It should be pointed out that the cylindrical batteries at different stages include: cylindrical batteries to be cleaned, cylindrical batteries after cleaning (cylindrical batteries to be pre-welded), cylindrical batteries after pre-welding (cylindrical batteries to be full-welded), and cylindrical batteries after full-welding.

[0085] The plate chain line 400 can be used to supply cylindrical batteries to be cleaned to the cleaning device 100, supply cylindrical batteries after cleaning to the pre-welding device 200, and supply cylindrical batteries after pre-welding to the full welding device 300. The arrangement of the plate chain line 400 can realize the series connection between the cleaning device 100, the pre-welding device 200 and the full welding device 300, and a certain amount of cylindrical batteries can be stored on the plate chain line 400. During the stop and start process according to the first and second set times, a part of the cylindrical batteries on the plate chain line 400 can be supplied to the cleaning device 100, the pre-welding device 200 and the full welding device 300 every first set time, and the cylindrical batteries after cleaning in the cleaning device 100, the cylindrical batteries after pre-welding in the pre-welding device 200 and the cylindrical batteries after full-welding in the full welding device 300 can be removed. Correspondingly, a certain amount of cylindrical batteries at different stages can be buffered in the cleaning device 100, the pre-welding device 200 and the full welding device 300.

[0086] More importantly, the plate chain line 400 is flexible and can be arranged around the full-welding device 300, the pre-welding device 200, and the cleaning device 100 according to spatial arrangement requirements, and the full-welding device 300, the pre-welding device 200, and the cleaning device 100 can be reasonably arranged on both sides or periphery of the plate chain line 400 based on the arrangement of the plate chain line 400, and the plate chain line 400 itself can also be folded around to extend its own length, which not only can reduce the overall space occupation of the seal nail welding line 1000, but also can realize integration of the full-welding device 300, the pre-welding device 200, and the cleaning device 100 through the plate chain line 400, and each device can realize its own function, without the need to set up a large workstation to integrate all functions (such as multiple laser systems, a large nail feeding device 250, and multiple workpiece clamps), which can improve space occupation, avoid space redundancy, and make the overall structure more compact.

[0087] That is, the cleaning device 100, the pre-welding device 200, and the full-welding device 300 are directly connected, and if one of the devices fails, the seal nail welding line 1000 needs to be shut down as a whole, but the arrangement of the plate chain line 400 can avoid this situation, and the three devices have certain structural differences, and the plate chain line 400 can be arranged in any direction, which can optimize the overall layout and improve space occupation.

[0088] Therefore, on the one hand, through the arrangement of the plate chain line 400, cylindrical batteries in different stages can be buffered, so that when any one of the cleaning device 100, the full-welding device 300, and the pre-welding device 200 fails, the other devices can still continue to process cylindrical batteries based on the buffered cylindrical batteries, which can avoid the overall failure of the seal nail welding line 1000 to a certain extent, improve work stability and reliability, and on the other hand, based on the flexible arrangement of the plate chain line 400, the modular multiple devices in series can avoid space redundancy, improve space occupation, and simplify the structure.

[0089] In combination with FIG. 1, Figure 1 As shown in FIG. 1, according to some embodiments of the present application, the plate chain line 400 includes an inlet line 410 and an outlet line 440, the inlet line 410 has an inlet total port and at least one inlet outlet, the inlet outlet is connected to the first feeding device 120 of the cleaning device 100, and the outlet line 440 has an outlet total port and at least one outlet inlet, the outlet inlet is connected to the first discharging device 320 of the full-welding device 300.

[0090] Specifically, the feeding line 410 is located upstream of the cleaning device 100, the feeding inlet is used for flowing in the cylindrical battery to be cleaned, the feeding outlet is used for flowing out the cylindrical battery to be cleaned, the feeding outlet is connected with the first feeding device 120 of the cleaning device 100, so as to supply the cylindrical battery to be cleaned to the cleaning device 100, the cleaning device 100 can be multiple, the corresponding feeding outlets are multiple, the feeding outlets are arranged in one-to-one correspondence with the first feeding device 120, the discharging line 440 is located downstream of the full-welding device 300, the discharging inlet is used for receiving the completed full-welding cylindrical battery, the full-welding device 300 can be multiple, the corresponding discharging inlets are multiple, the discharging inlets are arranged in one-to-one correspondence with the first discharging device 320, and the discharging outlet is used for moving out the completed full-welding cylindrical battery flowed out from the multiple full-welding devices 300 as a whole.

[0091] In this way, by arranging the feeding line 410 and the discharging line 440, multiple cleaning devices 100 and multiple full-welding devices 300 can be arranged in parallel, the production quantity per unit time of the sealing pin welding line 1000 can be further improved, the production efficiency can be improved, and the parallel arrangement of multiple groups of devices can also improve the space occupation and realize compact arrangement.

[0092] In combination Figure 1 As shown in the figure, according to some embodiments of the present application, the plate chain line 400 further comprises at least one feeding line 420 and at least one discharging line 430, the feeding inlet of the feeding line 420 is connected with the second discharging device 130 of the cleaning device 100, the feeding outlet of the feeding line 420 is connected with the second feeding device 220 of the pre-welding device 200, the discharging inlet of the discharging line 430 is connected with the third discharging device 230 of the pre-welding device 200, and the discharging outlet of the discharging line 430 is connected with the third feeding device 330 of the full-welding device 300.

[0093] Specifically, the feeding line 420 and the discharging line 430 are arranged in pairs, the feeding line 420 is located between the cleaning device 100 and the pre-welding device 200, and is used for receiving the completed cleaning cylindrical battery and supplying the completed cleaning cylindrical battery to the pre-welding device 200, the discharging line 430 is located between the pre-welding device 200 and the full-welding device 300, and is used for receiving the completed pre-welding cylindrical battery and supplying the completed pre-welding cylindrical battery to the full-welding device 300, both ends of the feeding line 420 are connected with the second discharging device 130 and the second feeding device 220, and both ends of the discharging line 430 are connected with the third feeding device 330 and the third discharging device 230.

[0094] Therefore, a corresponding number of feeding lines 420 and discharging lines 430 can be arranged based on the number of pre-welding devices 200 to form a plurality of cylindrical battery processing paths in parallel, and a plurality of sets of cleaning devices 100, pre-welding devices 200 and full-welding devices 300 form a plurality of cylindrical battery processing paths, which can further realize compact arrangement of the sealing nail welding line 1000 and improve the unit time output of the sealing nail welding line 1000 and production efficiency.

[0095] According to some embodiments of the present application, at least the second feeding device 220 and the third discharging device 230 are configured as a wave wheel.

[0096] It can be understood that the plate chain line 400 is connected to the wave wheel, and the cylindrical batteries on the plate chain line 400 can be separated into a fixed pitch by the wave wheel. The mover of the magnetic drive conveying belt 210 is connected to the cylindrical battery in a gear rack meshing form, so that the connection structure of the wave wheel and the magnetic drive conveying belt 210 is simple, reliable and efficient.

[0097] According to some embodiments of the present application, the pre-welding device 200 comprises a nail feeding device 250 and a cover device 240, and the cover device 240 is located upstream of the nail feeding device 250 and is adapted to cover a protective cover on one end of the cylindrical battery having a liquid injection hole before the nail is fed.

[0098] It should be noted that after the liquid injection is completed, the cylindrical battery is electrified, and at this time the liquid injection hole is open for sealing. The sealing of the liquid injection hole is a key process for isolating the internal space of the shell from the external environment. The liquid injection hole is located on the end cover, and the positive electrode and the negative electrode of the cylindrical battery can be led out from the end cover at the same time, or the shell serves as the negative electrode, and the positive electrode is led out from the end cover alone. The sealing nail is generally an aluminum nail, and the distance between the positive electrode and the negative electrode of the cylindrical battery is very close. If there is a positional deviation when the sealing nail is welded on the end cover, it may cause the negative electrode and the positive electrode to be overlapped, causing a short circuit and a safety hazard.

[0099] Specifically, the cover device 240 can install a protective cover to one end of the cylindrical battery having a liquid injection hole, and the protective cover is configured as an insulating material piece. The protective cover covers the cylindrical battery, and the protective cover has an avoiding hole opposite to the liquid injection hole. The nail feeding device 250 can place the sealing nail to the area where the avoiding hole is located, so that the sealing nail can be placed to the position of the liquid injection hole. The protective cover is configured as an insulating material piece, so that after the sealing nail is placed to the expected position, the probability of the sealing nail directly contacting the negative electrode formed on the end cover of the shell or the cylindrical battery is lower, thereby reducing the probability of the cylindrical battery short circuiting and reducing the safety hazard.

[0100] It should be pointed out that the protective cover is made of insulating material and should have good corrosion resistance. While achieving insulation protection, it also needs to be replaced regularly to reduce the probability of adhesion on the protective cover and contamination of the cylindrical battery, so as to reduce the probability of the protective cover affecting the product quality rate.

[0101] It can be understood that, before nailing, the present application first installs a protective cover to the end of the cylindrical battery with the liquid injection hole. Before the sealing nail is pre-welded, the protective cover is used to achieve 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 pre-welding quality of the cylindrical battery.

[0102] According to some embodiments of the present application, the pre-welding equipment 200 also 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 nailing device 250. The lower cover device 270 is suitable for removing the protective cover located on the cylindrical battery after the pre-welding of the cylindrical battery is completed.

[0103] Specifically, the upper cover device 240, the nailing device 250, the pre-welding device 260 and the lower cover device 270 are arranged in sequence on the circulation path of the cylindrical battery in the pre-welding equipment 200, so that the protective cover is put on before nailing, and the protective cover is put down after pre-welding. This can ensure that during the nailing process and the pre-welding process, even if the sealing nail is poorly positioned, poorly welded, or even moves, it will not cause a short circuit in the cylindrical battery, thereby further improving the safety of the pre-welding equipment and reducing safety hazards.

[0104] like Figure 2 and Figure 3 As shown, the cleaning device 100 includes: a plurality of cleaning components 140 and a plurality of cleaning fixture components 160, the cleaning components 140 are arranged along the circumference of the first conveying device 110, the cleaning fixture components 160 include a cleaning fixture and a first lifting member, the cleaning fixture is used to clamp the cylindrical battery to be cleaned, and the first lifting member is used to eject the cylindrical battery from the support 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 along the circumference of the second conveying device 310. The full welding fixture component 360 includes a full welding fixture and a second lifting component. The full welding fixture is used to clamp the cylindrical battery to be cleaned, and the second lifting component is used to eject the cylindrical battery from the support cup.

[0105] The first conveying device 110 can synchronously drive the cleaning clamp and the first lifting piece during rotation, so that the cleaning clamp interacts with the first lifting piece, the first lifting piece separates the cylindrical battery to be cleaned from the cup, and the cleaning clamp can clamp the cylindrical battery to be cleaned while the cleaning assembly 140 is laser guided and positioned, so as to avoid the cylindrical battery to be cleaned from moving during the subsequent cleaning process of the cleaning assembly 140, improve the cleaning precision, improve the cleaning effect, and simplify the structure of the cleaning equipment 100, reduce the cost, and improve the space occupation of the cleaning equipment 100.

[0106] The second conveying device 310 can synchronously drive the full-welding clamp and the second lifting piece during rotation, so that the full-welding clamp interacts with the second lifting piece, the second lifting piece separates the cylindrical battery to be full-welded from the cup, and the full-welding clamp can clamp the cylindrical battery to be full-welded while the full-welding assembly 340 is laser guided and positioned, so as to avoid the cylindrical battery to be full-welded from moving during the subsequent full-welding process of the full-welding assembly 340, improve the full-welding precision, improve the full-welding effect, and simplify the structure of the full-welding equipment 300, reduce the cost, and improve the space occupation of the full-welding equipment 300.

[0107] The first conveying device 110 has a first direction, and the cleaning assembly 140 is a plurality of cleaning assemblies and is arranged 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 stop for a second set time to allow the injection hole of the cylindrical battery to be cleaned to be cleaned by one of the cleaning assemblies 140. The plurality of cleaning clamp assemblies 160 are arranged along the first direction. The cleaning clamp assembly 160 includes a cleaning clamp and a first lifting piece. The cleaning clamp is used to clamp the cylindrical battery to be cleaned. The first lifting piece is interactive with the cleaning clamp to separate the cylindrical battery to be cleaned from the cup within one of the first set times.

[0108] Specifically, the first direction is a rotating direction, the first direction can be a counterclockwise rotating direction or a clockwise rotating direction, the first conveying device 110 can rotate in the first direction, and in the rotating process, the first conveying device 110 can rotate for a first set time and stop rotating for a second set time, and in the first set time, part of the plurality of cleaning clamp assemblies 160 can be placed with the cylindrical battery to be cleaned, and the part of the cleaning clamp assemblies 160 placed with the cylindrical battery to be cleaned can move in the first direction towards the cleaning assembly 140, and in the process of moving towards the cleaning assembly 140, the first lifting member can separate the cylindrical battery to be cleaned from the cup, and the first lifting member interacts with the cleaning clamp to clamp the cylindrical battery to be cleaned after the first lifting member separates the cylindrical battery to be cleaned from the cup.

[0109] Further, the clamped cylindrical battery can flow through the cleaning assembly 140, and the first conveying device 110 stops for the second set time to clean the cylindrical battery to be cleaned in the second set time.

[0110] Similarly, the running track of the second conveying device 310 is the first direction, and the full-welding assembly 340 is a plurality of and is arranged at intervals in the first direction, the second conveying device 310 is configured to run for a first set time to convey the cylindrical battery to be full-welded and stop for a second set time to make the liquid injection hole of the cylindrical battery to be full-welded be full-welded by one of the full-welding assemblies 340, and the plurality of full-welding clamp assemblies 360 are arranged at intervals in the first direction, the full-welding clamp assembly 360 includes a full-welding clamp and a second lifting member, the full-welding clamp is used to clamp the cylindrical battery to be full-welded, and the second lifting member is interactive with the full-welding clamp to separate the cylindrical battery to be full-welded from the cup in one of the first set time.

[0111] Specifically, the second conveying device 310 can rotate in the first direction, and in the rotating process, the second conveying device 310 can rotate for a first set time and stop rotating for a second set time, and in the first set time, part of the plurality of full-welding clamp assemblies 360 can be placed with the cylindrical battery to be full-welded, and the part of the full-welding clamp assemblies 360 placed with the cylindrical battery to be full-welded can move in the first direction towards the full-welding assembly 340, and in the process of moving towards the full-welding assembly 340, the second lifting member can separate the cylindrical battery to be full-welded from the cup, and the second lifting member interacts with the full-welding clamp to clamp the cylindrical battery to be full-welded after the second lifting member separates the cylindrical battery to be full-welded from the cup.

[0112] Further, the clamped cylindrical battery can flow through the full-welding assembly 340, and the second conveying device 310 stops for the second set time to full-weld the cylindrical battery to be full-welded in the second set time.

[0113] It should be noted that the first conveying device 110 can be started and stopped according to the time ratio of the first set time and the second set time, and during the running process (in the first set time), the cleaning clamp assembly 160 can be synchronized to achieve the feeding of the cylindrical battery to be cleaned, the discharging of the cleaned cylindrical battery, the separation of the cylindrical battery to be cleaned from the cup before the cylindrical battery to be cleaned moves to the cleaning assembly 140, and the clamping of the cylindrical battery to be cleaned. During the stop process (in the second set time), the cleaning assembly 140 can clean the cylindrical battery to be cleaned. During the feeding process of the cylindrical battery to be cleaned, the separation of the cylindrical battery to be cleaned from the cup and the clamping of the cylindrical battery to be cleaned can be completed synchronously. During the discharging process of the cleaned cylindrical battery, the resetting of the cylindrical battery and the release of the cylindrical battery can be completed synchronously. The second conveying device 310 can be started and stopped according to the time ratio of the first set time and the second set time, and during the running process (in the first set time), the full-welding clamp assembly 360 can be synchronized to achieve the feeding of the cylindrical battery to be full-welded, the discharging of the full-welded cylindrical battery, the separation of the cylindrical battery to be full-welded from the cup before the cylindrical battery to be full-welded moves to the full-welding assembly 340, and the clamping of the cylindrical battery to be full-welded. During the stop process (in the second set time), the full-welding assembly 340 can full-weld the cylindrical battery to be full-welded. During the feeding process of the cylindrical battery to be full-welded, the separation of the cylindrical battery to be full-welded from the cup and the clamping of the cylindrical battery to be full-welded can be completed synchronously. During the discharging process of the full-welded cylindrical battery, the resetting of the cylindrical battery and the release of the cylindrical battery can be completed synchronously.

[0114] It can be understood that the separation of the cylindrical battery from the cup in one of the first set times refers to that the feeding and the discharging are performed once in each first time, and the cylindrical batteries fed each time can be multiple, and after the multiple cylindrical batteries are fed, they are moved synchronously towards the cleaning assembly 140 or the full-welding assembly 340, at this time the cylindrical batteries are clamped by the clamp, and other cylindrical batteries have been fed before the first set time, but have not been cleaned or full-welded, so the other cylindrical batteries are still in the state of being separated from the cup and clamped, but not in the first set time, but in the previous first set time or a more previous first set time.

[0115] Therefore, during the conveying process of the cylindrical battery to be cleaned by the first conveying device 110, the cleaning clamp assembly 160 can couple the battery feeding action with the auxiliary action before the battery cleaning, and couple the battery discharging action with the auxiliary action after the battery cleaning is completed. During the conveying process of the cylindrical battery to be full-welded by the second conveying device 310, the full-welding clamp assembly 360 can couple the battery feeding action with the auxiliary action before the battery full-welding, and couple the battery discharging action with the auxiliary action after the battery full-welding is completed. This can reduce the processing time, speed up the production rhythm, improve the utilization rate of laser, reduce the cost, and improve the production efficiency.

[0116] In combination Figure 2and Figure 3 As shown, the first conveying device 110 comprises a first turret 111 and a first turntable 112, a plurality of cleaning clamp assemblies 160 are arranged 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 piece; the second conveying device 310 comprises a second turret 311 and a second turntable 312, a plurality of full-welding clamp assemblies 360 are arranged 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 clamp to hold the cylindrical battery, and the fourth cam groove is used to drive the second lifting piece.

[0117] In the prior art, the cleaning device 100 and the full-welding device 300 can be linearly arranged, and the lifting of the battery and the clamping of the clamp need to be performed in sequence after the cylindrical battery reaches the cleaning position or the full-welding position, and the two auxiliary actions need to consume a certain time (for example, 3s), that is, the two auxiliary actions occupy 3s of production rhythm, and during the 3s, the laser of the cleaning assembly 140 and the full-welding assembly 340 is still in an open state, which reduces the laser utilization rate, increases the equipment cost, and the linear arrangement also aggravates the space occupation.

[0118] In the present application, by constructing the full-welding device 300 and the pre-welding device 200 as cam turret devices, the space occupation can be improved, the laser utilization rate can be improved, and the cost can be reduced.

[0119] Specifically, the first turntable 112 is provided with a plurality of cleaning clamp assemblies 160 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, the first turret 111 has a first cam groove and a second cam groove, the first lifting piece can be in contact with the first cam groove for transmission, the cleaning clamp can be in contact with the second cam groove for transmission, and the first turntable 112 is adapted to drive the first cleaning 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 piece to move.

[0120] Specifically, the first rotating disc 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 located in the first cam groove and the second cam groove respectively, the first cam groove can define the movement track of the first lifting member, and the second cam groove can define the movement track of the cleaning clamp, so that the first lifting member can be further driven to separate or reset the cylindrical battery from the cup under the driving of the first cam groove, and the cleaning clamp can be clamped or released under the driving of the second cam groove.

[0121] It should be noted 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, including driving the cylindrical battery to move away from or towards the cup and driving the cleaning clamp to clamp or release the cylindrical battery.

[0122] It can be understood that, in combination with Figure 3 As shown in the figure, the first rotating disc 112 can drive the cleaning clamp assembly 160 to move in the first direction, and during the rotation of the cleaning clamp assembly 160 driven by the first rotating disc 112, at least part of the first lifting member can slide in the first cam groove, and at least part of the cleaning clamp can slide in the second cam groove, so that within the first set time, the first lifting member can drive the cylindrical battery to move away from the cup (e.g. 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 be reset to reset the cylindrical battery to the cup.

[0123] In other words, through the first cam groove and the second cam groove, a double-layer cam groove structure is formed on the first turret 111, and through the cooperation of the cam tracks of the two cam grooves, the clamping and fixing of the cylindrical battery and the release of the cylindrical battery, the lifting and lowering of the cylindrical battery can be realized, and the visual guidance and laser cleaning can be realized through the cleaning assembly 140.

[0124] Therefore, through the cooperation of the first rotating disc 112, the first turret 111 and the cleaning clamp assembly 160, the feeding action of the cylindrical battery and the pre-cleaning auxiliary action are coupled, and the discharging action of the battery and the post-cleaning auxiliary action are coupled, so as to simplify the production rhythm and improve the production efficiency, at the same time, the cam turret layout form can improve the space occupation of the cleaning equipment 100, reduce the space requirement of the factory building, and reduce the layout cost.

[0125] Similarly, as Figure 4 and Figure 5As shown, the second rotary disc 312 is provided with a plurality of full-welding clamp assemblies 360 in the first direction, the second rotary disc 312 is sleeved with the second turret 311, the second rotary disc 312 can rotate relative to the second turret 311, the second turret 311 is provided with a third cam groove and a fourth cam groove, the second lifting member can be in contact with the third cam groove for transmission, the full-welding clamp can be in contact with the fourth cam groove for transmission, and the second rotary disc 312 is suitable for driving the full-welding clamp assembly 360 to rotate in the second direction, so that the third cam groove and the fourth cam groove are respectively used for driving the full-welding clamp and the second lifting member to move.

[0126] Specifically, the second rotary disc 312 can drive the full-welding clamp assembly 360 located thereon to rotate, the second lifting member and the full-welding clamp on each full-welding clamp assembly 360 are respectively located in the third cam groove and the fourth cam groove, the third cam groove can define a movement track of the second lifting member, and the fourth cam groove can define a movement track of the full-welding clamp, so that the second lifting member can be further driven by the third cam groove to separate or reset the cylindrical battery from the cup, and the full-welding clamp can be driven by the fourth cam groove to clamp or release the cylindrical battery.

[0127] It should be noted that the third cam groove and the fourth cam groove are respectively used for driving the full-welding clamp and the second lifting member to move, including driving the cylindrical battery to move away from or towards the cup and driving the full-welding clamp to clamp or release the cylindrical battery.

[0128] It can be understood that, in combination with Figure 5 As shown, the second rotary disc 312 can drive the full-welding clamp assembly 360 to move in the second direction, at least part of the second lifting member can slide in the third cam groove, and at least part of the full-welding clamp can slide in the fourth cam groove during the rotation of the second rotary disc 312, so that, within the second set time, the second lifting member can drive the cylindrical battery to move away from the cup (such as lifting), the full-welding clamp can clamp the cylindrical battery, after the full-welding of the cylindrical battery is completed, the full-welding clamp can release the cylindrical battery, and the second lifting member can be reset to reset the cylindrical battery in the cup.

[0129] In other words, through the third cam groove and the fourth cam groove, a double-layer cam groove structure is formed on the second turret 311, and through the cooperation of the cam tracks of the two cam grooves, the clamping and fixing of the cylindrical battery and the release of the cylindrical battery, the lifting and lowering of the cylindrical battery can be realized, and the visual guidance and laser full-welding can be realized through the full-welding assembly 340.

[0130] Therefore, by the cooperation of the second rotary table 312, the second turret 311 and the full-welding clamp assembly 360, the feeding operation of the cylindrical battery and the pre-full-welding auxiliary operation are coupled, and the discharging operation of the battery and the post-full-welding auxiliary operation are coupled, so as to simplify the production rhythm, improve the production efficiency, and at the same time, the cam turret layout form can improve the space occupation of the full-welding equipment 300, reduce the space requirement for the factory building, and reduce the layout cost.

[0131] In combination Figure 3 , Figure 6 and Figure 7 , the cleaning equipment 100 further comprises a first cam divider 150, the first conveying device 110 is connected with the first cam divider 150, and the cleaning clamp assembly 160 is divided into a plurality of cleaning clamp groups 101 in the circumferential direction of the first rotary table 112. The number of cleaning clamp assemblies 160 in each cleaning clamp group 101 is at least two, and the angle interval between adjacent two cleaning clamp 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.

[0132] Specifically, the first cam divider 150 and the first rotary table 112 can be configured as a gear mesh transmission structure, and the first cam divider 150 itself drives the first rotary table 112 to rotate through an incomplete gear, so that the first rotary table 112 can realize proportional control between rotation and stop according to the driving angle of the first cam divider 150, for example, the first cam divider 150 rotates one circle, and drives the first rotary table 112 to rotate one third of a circle, that is, the walking and stopping ratio is 1:2. During the travel process, the feeding of the cylindrical battery to be cleaned, the discharging of the cleaned cylindrical battery, the auxiliary operation before the cleaning of the cylindrical battery to be cleaned, and the auxiliary operation before the discharging of the cleaned cylindrical battery can be realized synchronously.

[0133] In this way, the cylindrical battery can have a travel time (first set time) and a stop time (second set time) in the first rotary table 112, and the processing can be performed during the stop time, that is, intermittent processing is realized. At the same time, the time consumption ratio of the cleaning time of the cylindrical battery can be greater than the time consumption ratio of the processing preparation time sequence, so as to improve the production efficiency, improve the laser utilization rate, and reduce the cost.

[0134] Exemplarily, the driving angle of the first cam divider 150 is 120°, and the proportional relationship between the travel time and the stop time is 1:2. Assuming that the time consumption for driving the first rotary table 112 to rotate 120° is 1 second, the stop time is 2 seconds, the cylindrical battery cleaning time is more sufficient, and the laser utilization rate is also higher.

[0135] It should be noted that the first cam divider 150 drives the first rotating disc 112 to move, so that the first cam divider 150 starts and stops according to the running time and the stopping time, and a plurality of cylindrical batteries can be fed each time the running time, that is, a plurality of cylindrical batteries can be fed each time.

[0136] In combination with the first cam divider 150, the second cam divider 350, and the second rotating disc 312, the full-welding device 300 can be used to realize intermittent processing of the cylindrical batteries, and the full-welding time of the cylindrical batteries can be longer than the processing preparation time, so that the production efficiency, the laser utilization rate, and the cost can be improved. Figure 5 、 Figure 6 and Figure 7 As shown in the first cam divider 150, the second cam divider 350, and the second rotating disc 312, the full-welding device 300 further comprises a second cam divider, the second conveying device 310 is connected with the second cam divider, and the full-welding clamp assembly 360 is divided into a plurality of full-welding clamp groups 301 in the circumferential direction of the second rotating disc 312. The number of the full-welding clamp assembly 360 in each full-welding clamp group 301 is at least two, and the angle interval between the adjacent two full-welding clamp 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.

[0137] Specifically, the second cam divider and the second rotating disc 312 can be configured as a gear mesh transmission structure, and the second cam divider itself drives the second rotating disc 312 to rotate through an incomplete gear, so that the second rotating disc 312 can realize proportional control between rotation and stopping according to the driving angle of the second cam divider. For example, the second cam divider rotates one circle, and drives the second rotating disc 312 to rotate one third of a circle, that is, the starting and stopping ratio is 1:2. During the running process, the feeding of the cylindrical batteries to be full-welded, the discharging of the full-welded cylindrical batteries, the auxiliary actions before the full-welding of the cylindrical batteries to be full-welded, and the auxiliary actions before the discharging of the full-welded cylindrical batteries can be realized synchronously.

[0138] In this way, the cylindrical batteries can have a running time (second set time) and a stopping time (second set time) in the second rotating disc 312, and the processing can be performed during the stopping time, that is, intermittent processing is realized. At the same time, the time consumption ratio of the full-welding time of the cylindrical batteries can be greater than the time consumption ratio of the processing preparation time, so that the production efficiency, the laser utilization rate, and the cost can be improved.

[0139] For example, the driving angle of the second cam divider is 120°, and the ratio relationship between the running time and the stopping time is 1:2. Assuming that the time consumption of driving the second rotating disc 312 to rotate 120° is 1 second, the stopping time is 2 seconds, the full-welding time of the cylindrical batteries is more sufficient, and the laser utilization rate is also higher.

[0140] It should be noted that the second cam divider drives the second rotating disc 312 to move, so that the second cam divider starts and stops according to the running time and the stopping time, and a plurality of cylindrical batteries can be fed each time the running time, that is, a plurality of cylindrical batteries can be fed each time.

[0141] In summary, by setting the first cam divider 150 and the second cam divider, the intermittent processing of the cleaning device 100 and the full-welding device 300 can be realized respectively, and the time consumption ratio of the cylinder battery processing timing can be greater than the time consumption ratio of the processing preparation timing, so as to improve the production efficiency, improve the laser utilization rate, and reduce the cost.

[0142] As shown in Figure 7 and Figure 8 , the number of cleaning assemblies 140 is consistent with the number of cleaning clamp assemblies 160 in the cleaning clamp group 101, and each cleaning clamp group 101 is correspondingly provided with one cleaning assembly 140, or each cleaning clamp group 101 is correspondingly provided with one cleaning assembly 140, and the last cleaning clamp group 101 is not correspondingly provided with a cleaning assembly 140; the number of full-welding assemblies 340 is consistent with the number of full-welding clamp assemblies 360 in the full-welding clamp group 301, and each full-welding clamp group 301 is correspondingly provided with one full-welding assembly 340, or each full-welding clamp group 301 is correspondingly provided with one full-welding assembly 340, and the last full-welding clamp group 301 is not correspondingly provided with a full-welding assembly 340.

[0143] That is, if the number of cleaning clamp assemblies 160 in the cleaning clamp group 101 is two, the number of cleaning assemblies 140 is also two, if the number of cleaning clamp assemblies 160 is three, the number of cleaning assemblies 140 is also three, if the number of full-welding clamp assemblies 360 in the full-welding clamp group 301 is two, the number of full-welding assemblies 340 is also two, and if the number of full-welding clamp assemblies 360 is three, the number of full-welding assemblies 340 is also three.

[0144] As shown in Figure 7 , in the first embodiment, each cleaning clamp group 101 is correspondingly provided with one cleaning assembly 140, and the last cleaning clamp group 101 is not correspondingly provided with a cleaning assembly 140, or each full-welding clamp group 301 is correspondingly provided with one full-welding assembly 340, and the last full-welding clamp group 301 is not correspondingly provided with a full-welding assembly 340.

[0145] Referring to Figure 7 , the cleaning assembly 140 is provided with a first cam divider 150 and a second cam divider 150, and the full-welding assembly 340 is provided with a first cam divider 350 and a second cam divider 350. Figure 7Taking the cleaning device 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 areas corresponding to the angles of adjacent cleaning fixture groups 101, which are defined as the head end area, the first middle area, the second middle area and the tail end area. Within each first preset time, each cleaning fixture group 101 moves from an area in the first direction to the next adjacent area, and the head end area, the first middle area and the second middle area are correspondingly provided with cleaning components 140. During the circulation process, the first turntable 112 rotates the angular interval (i.e., the first angle) between adjacent cleaning fixture groups 101 each time, i.e., rotates 90° to Taking three cylindrical batteries to be cleaned as an example, the cleaning fixture group 101 where the three cylindrical batteries to be cleaned are located first enters the head end area, and the cleaning component 140 in the head end area can clean one of the three cylindrical batteries to be cleaned, such as the first or the third, and then the whole group enters the first middle area, and the cleaning component 140 in the first middle area can clean the second of the three cylindrical batteries to be cleaned, and then the whole group enters the second middle area, and the cleaning component 140 in the second middle area can clean the third or the first of the three cylindrical batteries to be cleaned, and finally the whole group enters the tail end area, and all three cylindrical batteries entering the tail end area are cleaned, and can be loaded and unloaded in the tail end area.

[0146] by Figure 7 Taking the full welding device 300 as an example, each full welding fixture group 301 has three full welding fixture assemblies 360. In the first direction, the second turntable 312 is divided into four areas corresponding to the angles of adjacent full welding fixture groups 301, which are defined as the head end area, the first middle area, the second middle area and the tail end area respectively. Within each first preset time, each full welding fixture group 301 moves from an area in the first direction to the next adjacent area, and the head end area, the first middle area and the second middle area are correspondingly provided with full welding assemblies 340. During the circulation process, the second turntable 312 rotates the angular interval (i.e., the first angle) between adjacent full welding fixture groups 301 each time, i.e., it rotates 90°. Taking three cylindrical batteries to be fully welded as an example, the full welding fixture group 301 where the three cylindrical batteries to be fully welded are located first enters the head end area, and the full welding component 340 in the head end area can fully weld one of the three cylindrical batteries to be fully welded, such as the first or the third, and then the whole group enters the first middle area, and the full welding component 340 in the first middle area can fully weld the second of the three cylindrical batteries to be fully welded, and then the whole group enters the second middle area, and the full welding component 340 in the second middle area can fully weld the third or the first of the three cylindrical batteries to be fully welded, and finally the whole group enters the tail end area, and the three cylindrical batteries entering the tail end area are all fully welded, and can be loaded and unloaded in the tail end area.

[0147] The second embodiment, as Figure 8 As shown, each cleaning fixture group 101 is correspondingly provided with a cleaning component 140 , or each full welding fixture group 301 is correspondingly provided with a full welding component 340 .

[0148] See also Figure 8 ,by Figure 8 Taking the cleaning device 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 areas corresponding to the angles between adjacent cleaning fixture groups 101, which are defined as the head end area, the middle area and the tail end area. Within each first preset time, each cleaning fixture group 101 moves from one area in the first direction to the next adjacent area, and the head end area, the middle area and the tail end area are correspondingly provided with cleaning components 140. During the circulation process, the first turntable 112 rotates each time to adjust the angular interval (i.e., the first preset time) between adjacent cleaning fixture groups 101. An angle), that is, a rotation of 120°. Taking three cylindrical batteries to be cleaned as an example, the cleaning fixture group 101 where the three cylindrical batteries to be cleaned are located first enters the head end area, and the cleaning component 140 in the head end area can clean one of the three cylindrical batteries to be cleaned, such as the first or the third, and then the whole group enters the middle area, and the cleaning component 140 in the middle area can clean the second of the three cylindrical batteries to be cleaned, and then the whole group enters the tail end area, and 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 can load and unload materials in the tail end area.

[0149] by Figure 8Taking the full welding device 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 areas corresponding to the angles of adjacent full welding fixture groups 301, which are defined as the head end area, the middle area and the tail end area. Within each first preset time, each full welding fixture group 301 moves from one area in the first direction to the next adjacent area, and the head end area, the middle area and the tail end area are correspondingly provided with full welding components 340. During the circulation process, the second turntable 312 rotates each time to adjust the angular interval (i.e., the first Angle), that is, rotate 120°, taking three cylindrical batteries to be fully welded as an example, the full welding fixture group 301 where the three cylindrical batteries to be fully welded are located first enters the head end area, and the full welding component 340 in the head end area can fully weld one of the three cylindrical batteries to be fully welded, such as the first or the third, and then the whole group enters the middle area, and the full welding component 340 in the middle area can fully weld the second of the three cylindrical batteries to be fully welded, and then the whole group enters the tail end area, and the full welding component 340 in the tail end area can fully weld the third or the first of the three cylindrical batteries to be fully welded, and can load and unload materials in the tail end area.

[0150] Therefore, each cleaning fixture group 101 and each full welding fixture group 301 can achieve complete cleaning of multiple cylindrical batteries to be cleaned and complete full welding of multiple cylindrical batteries to be fully welded in the group after multiple first predetermined times and multiple second predetermined times. During the overall circulation process 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 at the same time, and the cleaning efficiency of the cleaning equipment 100 and the full welding efficiency of the full welding equipment 300 can be further improved.

[0151] like Figure 9 As shown, according to some embodiments of the present application, the first cam groove has a first track segment and a second track segment, the height difference between the second track segment and the first track segment is consistent with the movement stroke of the first lifting member, and the extension angle of the first track segment is less than or equal to the first angle; the second cam groove has a third track segment and a fourth track segment, the height difference between the fourth track segment and the third track segment is consistent with the movement stroke of the cleaning fixture, and the extension angle of the third track segment is less than or equal to the first angle.

[0152] It should be pointed out that Figure 9 The motion trajectory shown corresponds to Figure 8 The motion trajectories of the first lifting member and the cleaning fixture in the second embodiment are shown.

[0153] Specifically, the first cam groove and the second cam groove are annularly formed on the first turret 111, at least part of the first lifting member extends into the first cam groove, at least part of the cleaning clamp extends into the second cam groove, and the height difference between the first trajectory segment and the second trajectory segment can drive the first lifting member to move along the cylindrical battery axial direction, such as from the first trajectory segment to the second trajectory segment (in the direction of movement), the first lifting member rises, from the second trajectory segment to the first trajectory segment (in the direction of movement), the first lifting member descends, and the height difference between the third trajectory segment and the fourth trajectory segment can drive the cleaning clamp to clamp or release the cylindrical battery, such as from the third trajectory segment to the fourth trajectory segment (in the direction of movement), the cleaning clamp clamps the cylindrical battery, and from the fourth trajectory segment to the third trajectory segment (in the direction of movement), the cleaning clamp releases the cylindrical battery.

[0154] It should be noted that, referring to Figure 9 , the 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, and when the first turntable 112 rotates within an angle range of 120°-360°, the cleaning of the cylindrical battery can be performed, and when the first turntable 112 rotates within an angle range of 0°-120°, the cleaning clamp releases the battery, the first lifting member descends, and then the cleaning of the cylindrical battery is completed, and the cylindrical battery is unloaded, and then the cylindrical battery to be cleaned is loaded, the cleaning clamp clamps the cylindrical battery, and the first lifting member lifts.

[0155] Therefore, the extension angle of the first trajectory segment and the extension angle of the third trajectory segment can be more reasonable, and the cleaning clamp group 101 in which the cylindrical battery to be cleaned is located can always be maintained in a state in which the cylindrical battery is clamped during the overall start-stop process, and the cylindrical battery after cleaning and the cylindrical battery to be cleaned can complete the loading and unloading and synchronous clamping and releasing within a first included angle range, thereby improving the working stability and reliability of the cleaning equipment 100.

[0156] According to some embodiments of the present 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 clamp, and the extension angle of the seventh trajectory segment is less than or equal to the first included angle.

[0157] It should be noted that, Figure 9 , the Figure 8 , the movement trajectory of the second lifting member and the full-welding clamp in the second embodiment shown.

[0158] Specifically, the third cam groove and the fourth cam groove are annularly formed on the second turret 311, at least part of the second lifting member extends into the third cam groove, at least part of the full-welding clamp extends into the fourth cam groove, and the height difference between the fifth trajectory segment and the sixth trajectory segment can drive the second lifting member to move along the cylindrical battery axial direction, for example, the second lifting member rises when the fifth trajectory segment moves to the sixth trajectory segment (in the direction of movement), the second lifting member falls when the sixth trajectory segment moves to the fifth trajectory segment (in the direction of movement), and the height difference between the seventh trajectory segment and the eighth trajectory segment can drive the full-welding clamp to clamp or release the cylindrical battery, for example, the full-welding clamp clamps the cylindrical battery when the seventh trajectory segment moves to the eighth trajectory segment (in the direction of movement), and the full-welding clamp releases the cylindrical battery when the eighth trajectory segment moves to the seventh trajectory segment (in the direction of movement).

[0159] It should be noted that, referring to Figure 9 , in the embodiment shown, Figure 9 , the extension angle of the fifth trajectory segment and the seventh trajectory segment is less than the first included angle, and when the second turntable 312 rotates within the angle range of 120°-360°, the full-welding of the cylindrical battery can be performed, and when the second turntable 312 rotates within the angle range of 0°-120°, the full-welding clamp releases the battery first, then the second lifting member falls, and then the full-welding of the cylindrical battery is completed, and the full-welding clamp clamps the cylindrical battery and the second lifting member lifts the cylindrical battery after the full-welding cylindrical battery is fed.

[0160] Therefore, the extension angle of the fifth trajectory segment and the extension angle of the seventh trajectory segment can be more reasonable, and the full-welding clamp group 301 in which the full-welding cylindrical battery is located can always be maintained in a state in which the cylindrical battery is clamped during the overall start-stop process, and the cylindrical battery after full-welding and the full-welding cylindrical battery can be fed and discharged and simultaneously clamped and released within a first included angle range, so that the working stability and reliability of the full-welding device 300 can be improved.

[0161] As shown in Figure 7 and Figure 8 , according to some embodiments of the present application, the plurality of full-welding clamp assemblies 360 in each full-welding clamp group 301 are sequentially defined as first clamp to Nth clamp, and the first clamp in the adjacent group is arranged in the corresponding full-welding assembly 340 of the previous full-welding clamp group 301 or is arranged away from the first clamp in the corresponding full-welding assembly 340 of the next full-welding clamp group 301.

[0162] Among them, as shown in Figure 7As shown, in the first embodiment, the first end region, the first intermediate region and the second intermediate region are each provided with a cleaning assembly 140 or a full-weld assembly 340. Figure 6 As shown, in the first embodiment, the first end region, the first intermediate region and the second intermediate region are each provided with a cleaning assembly 140 or a full-weld assembly 340.

[0163] Specifically, the number of cleaning clamp assemblies 160 in each cleaning clamp group 101 is equal to the total number of cleaning assemblies 140, so that the plurality of cylindrical batteries in the group can be sequentially cleaned in the process of flowing through the plurality of regions, and the number of full-weld clamp assemblies 360 in each full-weld clamp group 301 is equal to the total number of full-weld assemblies 340, so that the plurality of cylindrical batteries in the group can be sequentially full-welded in the process of flowing through the plurality of regions.

[0164] Further, as shown, Figure 7 In some embodiments, each cleaning clamp group 101 includes a first clamp, a second clamp and a third clamp arranged in sequence in the first direction, and the number of corresponding cleaning assemblies 140 is three. The cleaning assembly 140 corresponding to the previous cleaning clamp group 101 is arranged adjacent to the first clamp in the group, i.e. the first clamp of the cleaning clamp group 101 in the first end region is opposite to the cleaning assembly 140, the second clamp of the cleaning clamp group 101 in the first intermediate region is opposite to the cleaning assembly 140, and the third clamp of the cleaning clamp group 101 in the second intermediate region is opposite to the cleaning assembly 140.

[0165] As shown, Figure 8 In other embodiments, each cleaning clamp group 101 includes a first clamp, a second clamp and a third clamp arranged in sequence in the first direction, and the number of corresponding cleaning assemblies 140 is three. The cleaning assembly 140 corresponding to the previous cleaning clamp group 101 is arranged away from the first clamp in the group, i.e. the third clamp of the clamp group in the first end region is opposite to the cleaning assembly 140, the second clamp of the cleaning clamp group 101 in the intermediate region is opposite to the cleaning assembly 140, and the first clamp of the cleaning clamp group 101 in the tail end region is opposite to the cleaning assembly 140.

[0166] In this way, by reasonably setting the relative positions of the plurality of cleaning assemblies 140 on different areas of the first turntable 112 and the corresponding cleaning clamp groups 101, the plurality of cylindrical batteries cleaned by each group can be completely cleaned after sequentially passing through the plurality of areas of the first turntable 112. Not only can the spacing between the plurality of cleaning assemblies 140 be more reasonable, reducing the difficulty of arrangement and the probability of mutual influence and improving cleaning accuracy, but also the space around the first turntable 112 can be reasonably utilized, so that the overall layout of the cleaning equipment 100 is more compact, and the space occupation can be further improved.

[0167] Alternatively, as shown in some embodiments, each full welding clamp group 301 includes a first clamp, a second clamp, and a third clamp arranged in sequence in the first direction, and the number of corresponding full welding assemblies 340 is three. The full welding assembly 340 corresponding to the front full welding clamp group 301 is adjacent to the first clamp in the group, i.e., the first clamp of the full welding clamp group 301 in the head region is opposite to the full welding assembly 340, the second clamp of the full welding clamp group 301 in the first intermediate region is opposite to the full welding assembly 340, and the third clamp of the full welding clamp group 301 in the second intermediate region is opposite to the full welding assembly 340. Figure 7 As shown in some embodiments, each full welding clamp group 301 includes a first clamp, a second clamp, and a third clamp arranged in sequence in the first direction, and the number of corresponding full welding assemblies 340 is three. The full welding assembly 340 corresponding to the front full welding clamp group 301 is away from the first clamp in the group, i.e., the third clamp of the clamp group in the head region is opposite to the full welding assembly 340, the second clamp of the full welding clamp group 301 in the intermediate region is opposite to the full welding assembly 340, and the first clamp of the full welding clamp group 301 in the tail region is opposite to the full welding assembly 340.

[0168] Figure 8 In this way, by reasonably setting the relative positions of the plurality of full welding assemblies 340 on different areas of the first turntable 112 and the corresponding full welding clamp groups 301, the plurality of cylindrical batteries subjected to full welding by each group can be completely full-welded after sequentially passing through the plurality of areas of the second turntable 312. Not only can the spacing between the plurality of full welding assemblies 340 be more reasonable, reducing the difficulty of arrangement and the probability of mutual influence and improving full welding accuracy, but also the space around the second turntable 312 can be reasonably utilized, so that the overall layout of the full welding equipment 300 is more compact, and the space occupation can be further improved.

[0169] In this way, by reasonably setting the relative positions of the plurality of full welding assemblies 340 on different areas of the first turntable 112 and the corresponding full welding clamp groups 301, the plurality of cylindrical batteries subjected to full welding by each group can be completely full-welded after sequentially passing through the plurality of areas of the second turntable 312. Not only can the spacing between the plurality of full welding assemblies 340 be more reasonable, reducing the difficulty of arrangement and the probability of mutual influence and improving full welding accuracy, but also the space around the second turntable 312 can be reasonably utilized, so that the overall layout of the full welding equipment 300 is more compact, and the space occupation can be further improved.

[0170] ​In summary, the same group of cylindrical batteries can be cleaned one after another when passing through the first turntable 112, and fully welded one after another when passing through the second turntable 312, and multiple groups of cylindrical batteries can be processed on the first turntable 112 or the second turntable 312 at the same time, so that more cylindrical batteries can be processed at the same time, thereby improving production efficiency, and multiple cylindrical batteries in multiple groups of cylindrical batteries are processed one after another, which can reduce the probability of interference and improve processing accuracy.

[0171] Furthermore, it is understandable that in the prior art, pre-welding equipment can also adopt linear pre-welding equipment. Although it can meet the use requirements of high production cycles, due to the size limitations of cylindrical batteries, the sizes of fixtures, pre-welding galvanometers, etc. need to be made very large, occupying a large space, and resulting in low laser utilization of the pre-welding galvanometers. Currently, common battery shapes include square shells, soft packs, and cylindrical batteries. Cylindrical batteries have the advantage of regular shapes that are different from the other two. Therefore, the industry often uses cam turret structure manufacturing equipment to achieve a production mode of transporting and processing at the same time (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 is also a unique processing advantage of cylindrical batteries.

[0172] However, for sealing pin welding, while laser cleaning and full laser welding can be achieved using a cam turret, the pre-welding equipment 200 requires a pin-loading process, making it difficult to install. This is because in high-takt production equipment, the cam turret generates significant material vibration during operation, and the sealing pins are relatively light. This can cause the sealing pins to be shaken out of the battery during operation, resulting in a very high risk of short circuits. Therefore, most current sealing welding solutions rely on linear equipment. However, with increasing production rates, especially for large cylindrical batteries, not only does the pre-welding equipment fixture size need to be increased, but the array of pre-welding galvanometers in the pre-welding station also increases the equipment size. Furthermore, after the cylindrical battery is positioned, the positioning plate must be pressed down and raised. As a result, the laser utilization rate of linear equipment is generally less than 30%. Designing compact equipment with different structures for different processes to achieve precise and efficient sealing pin welding is an urgent challenge in cylindrical battery production.

[0173] In the present application, both laser cleaning and laser full welding are realized in the form of cam turret, which can improve the utilization rate of laser in the process of laser cleaning and laser full welding. The positioning and clamping auxiliary actions of the cylindrical battery in the process of laser cleaning and laser full welding are coupled with the loading and unloading actions of the cylindrical battery. During the loading process, the jacking, clamping and positioning of the cylindrical battery can be realized synchronously. During the unloading process, the release of the cylindrical battery can be realized synchronously, so as to shorten the time consumption except for cleaning and full welding processes, thereby improving the utilization rate of laser. Further, the pre-welding equipment 200 with the magnetic drive conveying belt 210 structure is used to replace the existing linear pre-welding equipment 200, which can improve the conveying stability of the sealing nails. The plate chain line 400 realizes the butt joint between the pre-welding equipment 200 and the full welding equipment 300, and between the pre-welding equipment 200 and the cleaning equipment 100. Based on the arbitrary direction layout of the plate chain line 400, the compactness of the pre-welding equipment 200 is better. Assuming that the flow direction of the cylindrical battery between the three equipment is generally the length direction of the factory building, and the plate chain line 400 is arranged, the multiple devices in the pre-welding equipment 200 can fully utilize the width space of the factory building to realize compactness setting and higher space utilization rate. The time consumption of the pre-welding cylindrical battery moving to the pre-welding device 260 can also be shorter, and the laser utilization rate of the pre-welding equipment 200 can also be improved to reduce the cost.

[0174] It should be noted that in the embodiments of the present application, Figure 2 and Figure 3 The structure schematic diagram of the cleaning equipment 100 is shown, Figure 4 and Figure 5 The structure schematic diagram of the full welding equipment 300 is shown, Figure 7 and Figure 8 The arrangement position schematic diagram of the cleaning assembly 140 in the cleaning equipment 100 or the arrangement position schematic diagram of the full welding assembly 340 in the full welding equipment 300 under two embodiments is shown, Figure 9 The motion trajectory schematic diagram of the cleaning clamp and the first jacking part of the cleaning equipment 100 or the motion trajectory schematic diagram of the full welding clamp and the second jacking part of the full welding equipment 300 is shown.

[0175] Among them, Figure 2 and Figure 3 In the figures, the cleaning assembly 140, the first rotary disc 112, the first rotary turret 111, the cleaning clamp assembly 160 and the first cam divider 150 are shown, Figure 4 and Figure 5 In the figures, the full welding assembly 340, the second rotary disc 312, the second rotary turret 311, the full welding clamp assembly 360 and the second cam divider are shown, Figure 7 and Figure 8In the figure, the cleaning clamp group 101, the cleaning assembly 140 and the cleaning clamp assembly 160 are shown as a schematic diagram of the arrangement position of the cleaning assembly 140 in the cleaning equipment 100, and the full-welding clamp group 301, the full-welding assembly 340 and the full-welding clamp assembly 360 are shown as a schematic diagram of the arrangement position of the full-welding assembly 340 in the full-welding equipment 300, Figure 9 In the figure, the upper trajectory line is the movement trajectory line of the cleaning clamp, and the lower trajectory line is the movement trajectory line of the first lifting member when the figure is a schematic diagram of the movement trajectory of the cleaning clamp and the first lifting member in the cleaning equipment 100, and the upper trajectory line is the movement trajectory line of the full-welding clamp, and the lower trajectory line is the movement trajectory line of the second lifting member when the figure is a schematic diagram of the movement trajectory of the full-welding clamp and the second lifting member in the full-welding equipment 300.

[0176] The cleaning assembly 140 can include a cleaning galvanometer module and a cleaning camera module, and the optical path of the cleaning galvanometer module is coaxial with the optical path of the cleaning camera module.

[0177] Specifically, the optical path of the cleaning camera module is coaxial with the optical path of the cleaning galvanometer module, so that the cleaning camera module can realize coaxial visual guidance of the cleaning galvanometer module, that is, after the cleaning camera module captures the position of the liquid injection hole, the cleaning galvanometer module can directly perform laser cleaning at the position where the cleaning camera module has finished capturing, so as to accurately determine the position of the liquid injection hole area through visual guidance and further perform laser cleaning.

[0178] In this way, on the one hand, laser cleaning is realized through coaxial visual guidance, and after the position of the liquid injection hole is captured by photographing, the cleaning galvanometer module and the cylindrical battery do not need to move, which can reduce the movement error caused by the movement of the cleaning assembly, so as to improve the laser cleaning precision and the laser cleaning effect, and on the other hand, in the process of visual guidance, not only the position that needs to be cleaned by laser can be determined, but also the incoming material detection (such as whether there is a glue nail, whether there is electrolyte contamination, etc.) can be realized, and the requirement for the mechanical precision of the cleaning clamp and the consistency of the incoming cylindrical battery can be reduced.

[0179] Similarly, the full-welding assembly 340 can include a full-welding galvanometer module and a full-welding camera module, and the optical path of the full-welding galvanometer module is coaxial with the optical path of the full-welding camera module.

[0180] Specifically, the optical path of the full-welding camera module is coaxial with the optical path of the full-welding galvanometer module, so that the full-welding camera module can realize coaxial visual guidance of the full-welding galvanometer module, that is, after the full-welding camera module captures the position of the liquid injection hole, the full-welding galvanometer module can directly perform laser full-welding at the position where the full-welding camera module has finished capturing, so as to accurately determine the position of the liquid injection hole area through visual guidance and further perform laser full-welding.

[0181] In this way, on the one hand, the laser full-welding is realized through the coaxial visual guidance, after the liquid injection hole position is captured by shooting, the full-welding galvanometer module and the cylindrical battery do not need to move, the movement error caused by the movement of the full-welding assembly can be reduced, the laser full-welding precision and effect can be improved, on the other hand, in the visual guidance process, not only the position needing laser full-welding can be determined, but also the incoming material detection (such as whether there is a sealing nail, whether there is electrolyte contamination, etc.) can be realized, and the mechanical precision of the full-welding fixture and the consistency requirement of the incoming cylindrical battery can be reduced.

[0182] Next, the specific working process of the sealing nail welding line 1000 of the embodiment of the present application will be described in detail. Figure 1

[0183] The feeding line 410 has a feeding total port and two feeding outlets, the upper feeding line 420 and the lower feeding line 430 are both two, the discharging line 440 has two discharging inlets and a discharging total port, and the corresponding cleaning equipment 100, pre-welding equipment 200 and full-welding equipment 300 are both two, so as to form two cylindrical battery processing paths.

[0184] Among them, the production cycle of the two-point cylindrical battery processing path is the same, the battery enters the two cleaning equipment 100 from the feeding line 410, after scanning the code, the cylindrical battery to be cleaned enters the first turntable 112, the first turntable 112 carries a group of cylindrical batteries (three) each time, and sequentially flows through the three cleaning assemblies 140, so as to complete the cleaning of the three cylindrical batteries in a group of cylindrical batteries in sequence, that is, the cleaning of three groups of cylindrical batteries can be carried out in the first turntable 112 at the same time, a group of cylindrical batteries to be cleaned is fed each time, and a group of completed cleaning cylindrical batteries is discharged.

[0185] Further, a plurality of groups of completed cleaning cylindrical batteries can be pre-stored on the upper feeding line 420, a wave wheel is arranged between the upper feeding line 420 and the pre-welding equipment 200, the wave wheel controls the equal-interval feeding of a plurality of cylindrical batteries to be pre-welded on each pre-welding equipment 200, after the pre-welding equipment 200 completes the sealing nail pre-welding, the pre-welded cylindrical battery can be controlled by another wave wheel to be discharged at equal intervals to the lower feeding line 430.

[0186] A plurality of groups of completed pre-welding cylindrical batteries can also be pre-stored on the lower feeding line 430, the completed pre-welding cylindrical battery enters the second turntable 312, the second turntable 312 carries a group of cylindrical batteries (three) each time, and sequentially flows through the three full-welding assemblies 340, so as to complete the full-welding of the three cylindrical batteries in a group of cylindrical batteries in sequence, that is, the full-welding of three groups of cylindrical batteries can be carried out in the second turntable 312 at the same time, a group of cylindrical batteries to be full-welded is fed each time, and a group of completed full-welding cylindrical batteries is discharged to the discharging line 440.

[0187] After the completed full-welding cylindrical batteries entering the two discharging inlets flow back, they are removed from the sealing nail welding line 1000 through the discharging total port.​

[0188] Other configurations and operations of the seal pin welding line 1000 according to embodiments of the present application are known to those of ordinary skill in the art and are not described in detail herein.

[0189] In the description of the specification, the description referring to the terms "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" and the like is intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. The appearances of the above-described terms in various places of the specification are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0190] Although embodiments of the present application have been shown and described, it would be appreciated by those of ordinary skill in the art that changes, modifications, alternatives, and variations to the embodiments could be made without departing from the principles and spirit of the application, and that the scope of the application is defined by the claims and their equivalents.

Claims

1. A sealing nail welding line for a cylindrical battery, characterized in that: include: A cleaning device (100), the cleaning device (100) having a first conveying device (110), the first conveying device (110) being configured to operate for a first set time to convey cylindrical batteries to be cleaned, and to stop for a second set time to allow the injection holes of the cylindrical batteries to be cleaned to be cleaned; A pre-welding device (200), the pre-welding device (200) being located downstream of the cleaning device (100), the pre-welding device (200) comprising a magnetic drive conveyor belt (210), the magnetic drive conveyor belt (210) being adapted to receive cylindrical batteries cleaned by the cleaning device (100), the pre-welding device (200) being used to pre-weld sealing nails on the cleaned cylindrical batteries; A full welding device (300) is provided, wherein the full welding device (300) is located downstream of the cleaning device (100), and the full welding device (300) has a second conveying device (310), wherein the second conveying device (310) is configured to run for a first set time to convey the pre-welded cylindrical battery, and to stop for a second set time so that the injection hole area of ​​the pre-welded cylindrical battery is fully welded; wherein the first conveying device (110) and the second conveying device (310) cyclically drive the cylindrical battery to run and stop according to the first set time and the second set time.

2. The sealing nail welding line of the cylindrical battery according to claim 1, characterized in that: The sealing nail welding line further includes: a plate chain line (400), wherein the plate chain line (400) is arranged 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 suitable for caching cylindrical batteries at different stages.

3. The sealing nail welding line of the cylindrical battery according to claim 2, characterized in that: The plate chain line (400) includes: a feed line (410) and a discharge line (440), wherein the feed line (410) has a main feed port and at least one feed outlet, wherein the feed outlet is connected to the first loading device (120) of the cleaning equipment (100), and the discharge line (440) has a main discharge port and at least one discharge inlet, wherein the discharge inlet is connected to the first unloading device (320) of the full welding equipment (300).

4. The sealing nail welding line of the cylindrical battery according to claim 3, characterized in that: The plate chain line (400) further includes: at least one loading line (420) and at least one unloading line (430), wherein the loading inlet of the loading line (420) is connected to the second unloading device (130) of the cleaning equipment (100), the loading outlet of the loading line (420) is connected to the second loading 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 loading device (330) of the full welding equipment (300).

5. The sealing nail welding line of the cylindrical battery according to claim 4, characterized in that: At least the second loading device (220) and the third unloading device (230) are configured as impellers.

6. The sealing nail welding line of a cylindrical battery according to claim 1, characterized in that: The pre-welding device (200) comprises: a nailing device (250) and a cover device (240), wherein the cover device (240) is located upstream of the nailing device (250) and is suitable for placing a protective cover on one end of the cylindrical battery having a liquid injection hole before nailing the cylindrical battery.

7. The sealing nail welding line of the cylindrical battery according to claim 6, characterized in that: The pre-welding device (200) further comprises: a pre-welding device (260) and a lower cover device (270), wherein the pre-welding device (260) and the lower cover device (270) are sequentially arranged downstream of the nailing device (250), and the lower cover device (270) is suitable for removing the protective cover on the cylindrical battery after the pre-welding of the cylindrical battery is completed.

8. The sealing nail welding line of a cylindrical battery according to any one of claims 1 to 7, characterized in that: The cleaning device (100) comprises: a plurality of cleaning components (140) and a plurality of cleaning fixture components (160), wherein the cleaning components (140) are arranged along the circumference of the first conveying device (110), and the cleaning fixture components (160) comprise a cleaning fixture and a first lifting member, wherein the cleaning fixture is used to clamp the cylindrical battery to be cleaned, and the first lifting member is used to eject the cylindrical battery from the support cup; The full welding equipment (300) includes: a plurality of full welding components (340) and a plurality of full welding fixture components (360), wherein the full welding components (340) are arranged along the circumference of the second conveying device (310), and the full welding fixture component (360) includes a full welding fixture and a second lifting member, wherein the full welding fixture is used to clamp the cylindrical battery to be cleaned, and the second lifting member is used to eject the cylindrical battery from the support cup.

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

10. The sealing nail welding line of the cylindrical battery according to claim 9, characterized in that: The cleaning device (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 a plurality of cleaning fixture groups (101) in the circumferential direction of the first turntable (112), the number of the cleaning fixture assemblies (160) in each cleaning fixture group (101) is at least two, 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 in a stop-and-go manner according to the first included angle; The full welding equipment (300) further includes a second cam divider, the second conveying device (310) is connected to the second cam divider, the full welding fixture assembly (360) is divided into a plurality of full welding fixture groups (301) in the circumference of the second turntable (312), the number of the 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 a first angle, and the second cam divider is used to drive the second conveying device (310) to move according to the first angle.

11. The sealing nail welding line of a cylindrical battery according to claim 10, characterized in that: The number of the cleaning components (140) is consistent with the number of the 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 rearmost cleaning fixture group (101) is not provided with the cleaning component (140); The number of the full welding components (340) is consistent with the number of the full welding fixture components (360) in the full welding fixture group (301), and each full welding fixture group (301) is correspondingly provided with one full welding component (340), or each full welding fixture group (301) is correspondingly provided with one full welding component (340), and the full welding fixture group (301) at the rear end is not correspondingly provided with the full welding component (340).

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

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

14. The sealing nail welding line of a cylindrical battery according to claim 10, characterized in that: The plurality of cleaning fixture assemblies (160) in each cleaning fixture group (101) are defined as a first fixture to an Nth fixture in sequence, and the cleaning assembly (140) corresponding to the previous cleaning fixture group (101) is arranged adjacent to the first fixture in the group, or is arranged away from the first fixture in the group, compared to the cleaning assembly (140) corresponding to the next cleaning fixture group (101); The multiple full welding fixture assemblies (360) in each of the full welding fixture groups (301) are defined as the first fixture to the Nth fixture in sequence, and the full welding assembly (340) corresponding to the previous full welding fixture group (301) is arranged adjacent to the first fixture in the group, or is arranged away from the first fixture in the group, compared with the full welding assembly (340) corresponding to the next full welding fixture group (301).

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