Smart production line for cylindrical cell

Abstract

The present application relates to the technical field of battery production, and provides a smart production line for a cylindrical cell, comprising, successively arranged in a processing direction, a cell loading station, a cathode current collector welding station, a cathode coating station, a cell in-casing station, a cathode post welding station, an anode current collector welding station, a current collector lateral welding station, a cover plate tack welding station, a cover plate seal welding station, a cell unloading station and a cell transfer mechanism. The present application reasonably distributes each processing station to more reasonably process and produce cells and, during the entire production process, the stations can cooperate with each other to efficiently complete production and effectively improve the yield and the degree of automation during the cylindrical cell processing procedures, reducing cylindrical cell production costs.

Description

An intelligent production line for cylindrical battery cells

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311858180.2, filed on December 29, 2023, entitled “A Smart Production Line for Cylindrical Battery Cells,” which is incorporated herein by reference in its entirety. Technical Field

[0003] The present application relates to the field of battery production technology, and in particular to an intelligent production line for cylindrical battery cells. Background Art

[0004] As the core component of batteries, cells are typically assembled using stacking and winding methods. Winding is widely used due to its simplicity, high assembly efficiency, and ease of automation.

[0005] In existing technology, during the processing and assembly of cylindrical batteries, processes such as cell winding, collector plate welding, and cell casing insertion are often dispersed across different workshops. Parts from upstream processes are centrally stored after processing and then transported to downstream processes for further processing. During storage and transport, parts are prone to collision and damage, increasing the likelihood of defective and scrapped products.

[0006] Summary of the Invention

[0007] The present application provides an intelligent production line for cylindrical battery cells, which is used to solve the defects of low production efficiency and low yield rate in the production of cylindrical battery cells in the prior art.

[0008] The present application provides an intelligent production line for cylindrical battery cells, including a battery cell loading station, a positive electrode current collector plate welding station, a positive electrode encapsulation station, a battery cell shelling station, a positive electrode column welding station, a negative electrode current collector plate welding station, a current collector plate side welding station, a cover plate pre-spot welding station, a cover plate sealing welding station, and a battery cell unloading station, which are sequentially arranged along the processing direction.

[0009] The battery cell loading station is used to receive the battery cells; the positive collector plate welding station is used to receive the positive collector plate and the battery cells from the battery cell loading station, and weld the positive collector plate to the positive electrode of the battery cell; the positive electrode encapsulation station is used to receive the battery cells from the positive collector plate welding station, and encapsulate the positive electrode with the positive collector plate welded on the battery cell; the battery cell shelling station is used to receive the battery shell and the battery cells from the positive electrode encapsulation station, and install the battery cells into the battery shell; the positive electrode column The welding station is used to receive the battery cells from the battery cell shelling station and position and correct the battery shell so that the battery cells are concentric with the positive pole of the battery shell; the negative collector plate welding station is used to receive the negative collector plate and the battery cells from the positive pole welding station and weld the negative collector plate to the negative pole of the battery cell; the collector plate side welding station is used to receive the battery cells from the negative collector plate welding station and weld the negative collector plate to the battery shell; the cover plate pre-spot welding station is used to receive The cover plate and the battery cell from the current collecting plate side welding station are pre-welded to the negative electrode of the battery cell; the cover plate sealing welding station is used to receive the battery cell from the cover plate pre-spot welding station and seal the cover plate to the battery shell; the battery cell unloading station is used to receive the battery cell from the cover plate sealing welding station and realize battery cell unloading; the battery cell transmission mechanism is used to transmit the battery cell, the battery cell loading station, the positive current collecting plate welding station, the positive electrode encapsulation station, the battery cell shelling station, the positive electrode column welding station The station, the negative current collecting plate welding station, the current collecting plate side welding station, the cover plate pre-spot welding station, the cover plate sealing welding station and the battery cell unloading station are arranged in sequence along the extension direction of the battery cell transmission mechanism. The battery cell transmission mechanism includes a conveying track, a driving member and a plurality of transport vehicles. The plurality of transport vehicles are arranged in sequence along the conveying direction of the conveying track. The plurality of transport vehicles can move along the conveying track under the control of the driving member. The transport vehicle is used to carry the battery cells to be processed.

[0010] The intelligent production line for cylindrical battery cells provided in this application allows the battery cells to be processed and produced in a more reasonable manner by rationally arranging the various processing stations. During the entire production process, the various stations can cooperate with each other to efficiently complete production, which can effectively improve the yield rate and degree of automation in the processing of cylindrical battery cells and reduce the production cost of cylindrical battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0012] FIG1 is a schematic structural diagram of an intelligent production line for cylindrical batteries according to one embodiment of the present application;

[0013] FIG2 is a schematic structural diagram of a positive electrode current collector plate welding station of a cylindrical battery cell intelligent production line according to one embodiment of the present application;

[0014] FIG3 is a schematic diagram of the overall structure of the positive electrode current collecting plate welding station shown in FIG2 ;

[0015] FIG4 is a schematic structural diagram of a positioning fixture in the positive electrode current collecting plate welding station shown in FIG2 ;

[0016] FIG5 is a schematic diagram of the overall structure of the positive electrode current collector plate welding station provided in the present application;

[0017] FIG6 is a schematic structural diagram of a material extraction pressure head in a positive electrode current collector plate welding station provided in the present application;

[0018] FIG7 is a top view of the adsorption plate in the reclaiming pressure head shown in FIG6;

[0019] FIG8 is a top view of the support plate in the reclaiming head shown in FIG6 ;

[0020] FIG9 is a cross-sectional view of the reclaiming head shown in FIG6 ;

[0021] FIG10 is a schematic structural diagram of a cell shelling station in a cylindrical cell intelligent production line according to one embodiment of the present application;

[0022] FIG11 is a first perspective structural diagram of the structural diagram of the transport carrier in the battery cell shelling station shown in FIG10 ;

[0023] FIG12 is a second perspective structural diagram of the structural diagram of the transport carrier in the battery cell shelling station shown in FIG10 ;

[0024] FIG13 is a partial perspective structural diagram of the structural diagram of the transport vehicle in the battery cell shelling station shown in FIG10 ;

[0025] FIG14 is a schematic structural diagram of a positive electrode welding station in a cylindrical battery cell intelligent production line according to one embodiment of the present application;

[0026] FIG15 is a schematic diagram of the correction mechanism in the positive electrode welding station shown in FIG14;

[0027] FIG16 is a structural diagram of a collector plate side welding station in a cylindrical battery cell intelligent production line according to one embodiment of the present application;

[0028] FIG17 is a schematic structural diagram of the collector plate side welding device of the collector plate side welding station shown in FIG16;

[0029] FIG18 is a schematic diagram of the rotary pressure head of the current collecting plate side welding station shown in FIG16 abutting against the current collecting plate;

[0030] FIG19 is a schematic structural diagram of the welding mechanism and transport carrier of the collector plate side welding station shown in FIG16;

[0031] FIG20 is a schematic structural diagram of a cover plate pre-spot welding station in a cylindrical battery cell intelligent production line according to one embodiment of the present application;

[0032] FIG21 is an enlarged structural diagram of FIG20 at point A;

[0033] FIG22 is a structural schematic diagram of a cover plate pre-spot welding station in a cylindrical battery cell intelligent production line according to an embodiment of the present application from another perspective;

[0034] FIG23 is an enlarged structural diagram of FIG22 at point B;

[0035] FIG24 is a schematic cross-sectional structural diagram of the cover plate taking head in the cover plate pre-spot welding station shown in FIG20;

[0036] FIG25 is a structural schematic diagram of a cover plate pre-spot welding station in a cylindrical battery cell intelligent production line according to one embodiment of the present application from another perspective;

[0037] FIG26 is a structural schematic diagram of the cover plate positioning assembly in the cover plate pre-spot welding station shown in FIG20.

[0038] FIG27 is a schematic diagram of a structure of a cover plate sealing welding station in a cylindrical battery cell intelligent production line according to one embodiment of the present application;

[0039] FIG28 is a second structural diagram of a cover plate sealing welding station in a cylindrical battery cell intelligent production line according to one embodiment of the present application;

[0040] FIG. 29 is a schematic diagram of a dust hood according to an embodiment of the present application. DETAILED DESCRIPTION

[0041] The following further describes the intelligent production line for cylindrical battery cells in this application in conjunction with Figures 1 to 29.

[0042] Specifically, as shown in Figure 1, the cylindrical battery cell intelligent production line in this embodiment includes a battery cell loading station a, a positive current collector plate welding station b, a positive electrode encapsulation station c, a battery cell shelling station d, a positive pole welding station e, a negative current collector plate welding station f, a current collector plate side welding station g, a cover plate pre-spot welding station h, a cover plate sealing welding station i and a battery cell unloading station j, which are arranged in sequence along the processing direction.

[0043] Among them, the battery cell loading station a is used to receive the battery cell; the positive current collector plate welding station b is used to receive the positive current collector plate and the battery cell from the battery cell loading station a, and weld the positive current collector plate to the positive electrode of the battery cell; the positive electrode encapsulation station c is used to receive the battery cell from the positive current collector plate welding station b, and encapsulate the positive electrode with the positive current collector plate welded on the battery cell; the battery cell shelling station d is used to receive the battery shell and the battery cell from the positive electrode encapsulation station c, and install the battery cell into the battery shell; the positive pole welding station e is used to receive the battery cell from the battery cell shelling station, and position and correct the battery shell to make the battery cell concentric with the positive pole of the battery shell; the negative current collector plate The welding station f is used to receive the negative current collector and the battery cells from the positive pole welding station e, and weld the negative current collector to the negative electrode of the battery cell; the current collector side welding station g is used to receive the battery cells from the negative current collector welding station f, and weld the negative current collector to the battery shell; the cover pre-spot welding station h is used to receive the cover and the battery cells from the current collector side welding station g, and pre-weld the cover to the negative electrode of the battery cell; the cover sealing welding station i is used to receive the battery cells from the cover pre-spot welding station h, and seal the cover to the battery shell; the battery cell unloading station j is used to receive the battery cells from the cover sealing welding station i and test them, and unload the battery cells after passing the test. It can be understood that the battery cells can be delivered to the production line via the battery cell loading station a, the positive current collector plate can be delivered to the production line via the positive current collector plate welding station b, the battery shell can be delivered to the production line via the battery cell shelling station d, and the negative current collector plate can be delivered to the production line via the negative current collector plate welding station f.

[0044] In actual use, the external battery cell feeding equipment can supply the battery cells to the battery cell loading station a in sequence; then, the battery cells are transported to the positive collector plate welding station b, and the battery cells and the positive collector plate are welded together, wherein the positive collector plate can be welded to the positive electrode of the battery cell; then, the battery cells welded with the positive collector plate are transported to the positive electrode encapsulation station c, and the positive electrode of the battery cells is encapsulated with glue; then, the encapsulated battery cells are transported to the battery cell shelling station d, and the battery cells are installed in the battery shell; then, the battery cells installed with the battery shell are transported to the positive electrode column welding station e to realize the correction of the positive electrode column; then, the corrected battery cells are transported to the positive electrode column welding station e. The battery cell is transported to the negative collector plate welding station f and welded together with the negative collector plate, wherein the negative collector plate can be welded to the negative electrode of the battery cell; then, the battery cell with the negative collector plate welded is transported to the collector plate side welding station g, where the negative collector plate is welded to the battery cell shell; then, the battery cell is transported to the cover plate pre-spot welding station h, where the cover plate of the battery cell is pre-welded to the negative electrode of the battery cell; then, the battery cell with the cover plate pre-welded is transported to the cover plate sealing welding station i, where the cover plate of the battery cell is completely welded to the battery shell; finally, the processed battery cell is transported to the battery cell unloading station j, where the battery cell can be unloaded after passing the inspection. In this embodiment, by rationally arranging the various processing stations, the battery cells can be processed and produced in a more reasonable manner. During the entire production process, the various stations can cooperate with each other to efficiently complete production, which can effectively improve the yield rate and automation level in the processing of cylindrical battery cells and reduce the production cost of cylindrical battery cells.

[0045] In order to be able to transport battery cells between various work stations in a timely and effective manner, in this embodiment, the cylindrical battery cell intelligent production line also includes a battery cell transmission mechanism, which is used to transmit battery cells. The battery cell loading station a, the positive current collector welding station b, the positive electrode encapsulation station c, the battery cell shelling station d, the positive pole welding station e, the negative current collector welding station f, the current collector side welding station g, the cover pre-spot welding station h, the cover sealing welding station i and the battery cell unloading station j are arranged in sequence along the extension direction of the battery cell transmission mechanism.

[0046] Exemplarily, the battery cell transmission mechanism may include a conveyor track, a drive member, and a plurality of transport carriers. The plurality of transport carriers may be arranged in sequence along the conveying direction of the conveyor track in a magnetic levitation manner. The plurality of transport carriers can move along the conveyor track under the control of the drive member. The transport carriers are used to carry the battery cells to be processed, and the battery cells to be processed can be placed one by one on the transport carriers. It should be noted that the transport carriers in this embodiment will move to different workstations. The structures of the transport carriers in these workstations are the same, but for the sake of convenience, when describing the structure and function of each workstation, the transport carriers may have different labels. Moreover, in the specific description, the parts of the transport carriers may also have different names or labels, but the overall structure of the transport carriers is similar. Optionally, the battery cell transmission mechanism can be connected end to end. In this case, the battery cell transmission mechanism is constructed as a closed ring structure. In this embodiment, the various workstations are connected in series through a ring-shaped conveyor line. After processing, each upstream workstation can orderly transport the battery cells to the downstream workstation for processing. There is no need for centralized circulation, which can improve the circulation efficiency between workstations.

[0047] In this embodiment, the battery cell loading station a includes: a loading and conveying mechanism, a polarity alignment mechanism and a loading and clamping mechanism. The loading and conveying mechanism is used to transfer the battery cells, the loading and clamping mechanism is used to transfer the battery cells on the loading and conveying mechanism to the battery cell transmission mechanism, and the polarity alignment mechanism is used to detect the polarity status of the battery cells on the battery cell transmission mechanism.

[0048] The loading and conveying mechanism can be constructed as a chain plate type transmission line. The battery cells can be placed on the loading and conveying mechanism one by one at intervals for transportation. The polarity alignment mechanism is arranged on the side of the loading and conveying mechanism. The polarity alignment mechanism can identify whether the battery cells on the loading and conveying mechanism are in a state with the positive pole facing upward. The loading clamping mechanism is at least partially arranged above the loading and conveying mechanism. The loading clamping mechanism may include a mechanical arm and a clamping claw. The loading clamping mechanism can clamp the battery cells on the loading and conveying mechanism one by one and place them on the battery cell transmission mechanism. For example, they can be placed on a transport vehicle of the battery cell transmission mechanism. In practice, each battery cell is provided with an identification code corresponding to its own model. In order to be able to detect each battery cell, in this embodiment, the battery cell loading station also includes a code scanning mechanism arranged on the side of the loading and conveying mechanism. The code scanning mechanism can read the identification code on each battery cell to determine whether the current battery cell is the battery cell to be processed.

[0049] Furthermore, to improve the welding efficiency of the positive current collector plate, in this embodiment, as shown in Figures 2 to 5, the positive current collector plate welding station b includes: a conveying mechanism 1b and a material removal mechanism 2b. The conveying mechanism 1b includes a first current collector plate positioning assembly 11b and a second current collector plate positioning assembly 12b, spaced apart along the conveying direction. The positive current collector plate welding station b has a first loading position 31b, a material removal position 32b, and a second loading position 33b, sequentially along the conveying direction, with the material removal mechanism 2b located at the material removal position 32b. The first current collector plate positioning assembly 11b and the second current collector plate positioning assembly 12b are used to position the current collector plate. The first current collector plate positioning assembly 11b can switch between the first loading position 31b and the material removal position 32b, and the second current collector plate positioning assembly 12b can switch between the second loading position 33b and the material removal position 32b. The first current collecting disc positioning assembly 11b and the second current collecting disc positioning assembly 12b can receive the positive electrode current collecting disc at the first loading position 31b and the second loading position 33b respectively, and the taking mechanism 2b can grab the positive electrode current collecting disc at the taking position 32b.

[0050] The specific method for realizing position switching of the first collecting plate positioning assembly 11b and the second collecting plate positioning assembly 12b can be: two movers are arranged on a slide, one mover is connected to the first collecting plate positioning assembly 11b, and the other mover is connected to the second collecting plate positioning assembly 12b; when the first collecting plate positioning assembly 11b is located at the first loading position 31b, the second collecting plate positioning assembly 12b is located at the material removal position 32b; when the first collecting plate positioning assembly 11b is located at the material removal position 32b, the second collecting plate positioning assembly 12b is located at the second loading position 33b.

[0051] Specifically, the current collecting disc loading and welding device shown in this embodiment realizes alternating loading on both sides by respectively arranging a first current collecting disc positioning component 11b and a second current collecting disc positioning component 12b on both sides of the picking mechanism 2b. Since the positioning and welding of the positive current collecting disc 4b require a certain amount of time, this alternating loading method reduces the waiting time for welding and ensures the welding rhythm. In actual working process, the first current collecting disc positioning component 11b moves to the first loading position 31b, and the positive current collecting disc 4b is transferred to the first current collecting disc positioning component 11b by the loading mechanism. At this time, the second current collecting disc positioning component 12b is located at the picking position 32b, and the picking mechanism 2 picks up the current collecting disc 4 on the second current collecting disc positioning component 12. Then, the first current collecting disc positioning component 11b moves to the picking position 32b, and the picking mechanism 2b picks up the positive current collecting disc 4b on the first current collecting disc positioning assembly 11b. At this time, the second current collecting disc positioning assembly 12b is located at the second loading position 33b. The loading mechanism moves the current collecting disc 4b to the second current collecting disc positioning assembly 12b. After that, the first current collecting disc positioning assembly 11b moves to the first loading position 31b, and the second current collecting disc positioning assembly 12b moves to the picking position 32b, and repeats the above process. The picking mechanism 2b picks up the material and then welds it. By alternately loading the material on both sides of the picking mechanism 2b, the material can be picked up while loading, which is equivalent to a cache. The loading and picking do not interfere with each other, which reduces the waiting time for welding, ensures the welding rhythm, and can avoid the phenomenon that one of them fails and the material cannot be loaded at all, thereby ensuring the reliability of loading and thus ensuring the overall efficiency. It should be noted that in Figure 2, the first loading position 31b, the material removal position 32b and the second loading position 33b are indicated by dotted boxes respectively; in Figure 3, the first collecting plate positioning assembly 11b is indicated by solid lines as being located at the first loading position 31b, the second collecting plate positioning assembly 12b is located at the material removal position 32b, and the second collecting plate positioning assembly 12b is indicated by dotted lines as being located at the second loading position 33b.

[0052] As shown in Figures 2 and 3, the first current collecting disc positioning assembly 11b and the second current collecting disc positioning assembly 12b have the same structure, both including multiple positioning fixtures 111b arranged along the conveying direction. The number of positioning fixtures 111b is positively correlated with the welding and positioning times of the positive current collecting disc 4b. Furthermore, the greater the welding and positioning times, the greater the number of positioning fixtures 111b, ensuring that sufficient positive current collecting discs 4b are cached for pickup and welding, thereby reducing the waiting time for welding. When one of the multiple positioning fixtures 111b moves to a position relative to the pick-up mechanism 2b, the pick-up mechanism 2b is used to pick up the current collecting disc on the positioning fixture 111b.

[0053] As shown in Figure 4, the positioning fixture 111b shown in this embodiment includes a positioning seat 1111b, a clamping block driver, and multiple positioning clamping blocks 1112b. The multiple positioning clamping blocks 1112b are arranged circumferentially around the positioning seat 1111b, and the clamping block driver is used to drive the multiple positioning clamping blocks 1112b toward or away from each other. The positioning seat 1111b is provided with a positioning groove that provides a primary positioning for the positive electrode current collecting disc 4b. The multiple positioning clamping blocks 1112b then move toward each other to clamp the positive electrode current collecting disc 4b, thereby performing a secondary positioning operation to correct deviation. A fiber optic sensor can be provided on the positioning fixture 111b to detect whether a current collecting disc is present on the positioning seat 1111b. Furthermore, a proximity sensor can be provided on the positioning fixture 111b to detect the distance between the top of the positioning seat 1111b and the bottom of the positive electrode current collecting disc 4b, thereby determining whether the positive electrode current collecting disc 4b is properly placed, thereby ensuring that the positive electrode current collecting disc 4b is not placed upside down or tilted.

[0054] As shown in FIG5 , the current collecting plate loading station shown in this embodiment also includes: a lifting mechanism 51b; the lifting mechanism 51b is located at the material picking position 32b, and the lifting mechanism 51b is arranged relative to the material picking pressure head 21b of the material picking mechanism 2b, that is, the lifting mechanism 51b is located directly below the material picking mechanism 2b, and the lifting mechanism 51b is used to lift the positive electrode current collecting plate 4b at the material picking position 32b into the material picking pressure head 21b. The lifting mechanism 51b can be a cylinder. The first current collecting plate positioning assembly 11b and the second current collecting plate positioning assembly 12b are both provided with a slider 1113b that can move in the vertical direction. The slider 1113b is used to support the positive electrode current collecting plate 4b, and the lifting mechanism 51b is detachably connected to the slider 1113b. Specifically, each positioning fixture 111b is provided with a slider 1113b that can move in the vertical direction, and a through hole that is adapted to the slider 1113b is provided in the middle of the positioning groove. The slider 1113b can slide in the through hole, and the through hole plays a guiding role for the slider 1113b. When the positive current collecting disc 4b is placed in the positioning groove and contacts the slider 1113b, the positive current collecting disc 4b is positioned for the second time by multiple positioning clamps 1112b, and then the negative pressure suction port on the slider 1113b adsorbs the positive current collecting disc 4b. Thereafter, the multiple positioning clamps 1112b move away from each other to release the current collecting disc 4b. When the above 6 positioning clamps 1112b are positioned When any one of the positioning fixtures 111b carries the positive current collecting disc 4b and moves to the top of the lifting mechanism 51b, the lifting mechanism 51b opens and connects to the slider on the positioning fixture 111b, and the slider 1113b is pushed upward and drives the positive current collecting disc 4b to move toward the material picking pressure head 21b. The current collecting disc 4b leaves the positioning groove until it enters the material picking pressure head 21b. After the material picking pressure head 21b adsorbs the positive current collecting disc 4b, the negative pressure suction hole on the slider releases the current collecting disc 4b, and the lifting mechanism 51b drives the slider to retract, and the material picking pressure head 21 carries the positive current collecting disc 4b for the next step of welding.

[0055] As shown in Figures 2 and 3, the feeding mechanism 2b shown in this embodiment includes a feeding turntable 22b, and the feeding position 32b, the detection position and the welding position are arranged in sequence along the rotation direction of the turntable. A plurality of feeding pressure heads 21b are provided on the feeding turntable 22b, and the number of the feeding pressure heads 21b is greater than or equal to 3. Three of the plurality of feeding pressure heads 21b are respectively arranged in a one-to-one correspondence with the feeding position 32b, the detection position and the welding position. The feeding pressure head 21b is used to cyclically switch between the feeding position 32b, the detection position and the welding position in sequence along the rotation direction of the feeding turntable 22b, that is, after the feeding pressure head 21b adsorbs the positive electrode current collecting disk 4b at the feeding position 32b, it moves to the detection position for detection under the rotation of the feeding turntable 22b, and the detection position is provided with an optical fiber sensor for The current feeding pressure head 21b is detected to see if there is a positive current collecting disc 4b, to prevent the positive current collecting disc 4b from failing to retrieve the material at the feeding position 32b, or the positive current collecting disc 4b from falling before rotating to the detection position. After the detection is completed, if the detection position detects the presence of the positive current collecting disc 4b, the feeding turntable 22b continues to rotate, and the feeding pressure head 21b carries the positive current collecting disc 4b to the welding position, welding the positive current collecting disc 4b to the battery cell. After welding is completed, the feeding pressure head 21b is separated from the positive current collecting disc 4b, and returns to the feeding position 32b under the rotation of the feeding turntable 22b to perform the feeding operation of the next positive current collecting disc 4b. If the detection position does not detect the presence of the positive current collecting disc 4b, the subsequent welding operation will not be performed on this feeding pressure head 21b. By setting up multiple feeding pressure heads 21b, feeding, detection and welding can be carried out simultaneously, further ensuring the welding rhythm.

[0056] Figures 2 and 3 illustrate the provision of four feeding pressure heads 21b, i.e., one feeding pressure head 21b is in an idle state. The number of feeding pressure heads 21b can be reasonably set according to the welding efficiency, the workload required for welding a battery cell, and the time required for a collecting plate positioning mechanism to complete material preparation, thereby ensuring the maximization of the welding rhythm. At the same time, the more the number of feeding pressure heads 21b, the smaller the angle that the feeding turntable 22b needs to rotate when driving the feeding pressure head 21b to switch work stations, and accordingly, the overall rhythm is more compact.

[0057] In some embodiments, as shown in FIG2 , the positive electrode current collecting disc welding station b shown in this embodiment further includes: a detection mechanism 52b; the detection end of the detection mechanism 52b is directed toward the material collecting head 21b at the detection position, and the detection mechanism 52b is used to determine whether the positive electrode current collecting disc 4b is picked up by the material collecting head 21b at the detection position, that is, the detection mechanism 52b is used to detect whether the positive electrode current collecting disc 4b is on the material collecting head 21b. The detection mechanism 52b includes an optical fiber sensor, which determines whether the positive electrode current collecting disc 4b is on the material collecting head 21b. If the positive electrode current collecting disc 4b is determined to be present, the turntable 22b continues to rotate to the welding position and performs the welding operation; if the positive electrode current collecting disc 4b is not detected, the subsequent welding operation on the material collecting head 21b is not performed.

[0058] In this embodiment, as shown in Figure 5, the transport carrier 53b in the battery cell transmission mechanism can move the battery cell to the welding position. When the transport carrier 53b carries the battery cell to the welding position, the transport carrier 53b is used to lift the battery cell to the bottom of the material picking head 21b at the welding position, so that the positive pole of the battery cell abuts against the positive current collecting plate 4b, so that the positive current collecting plate 4b can be welded to the positive pole of the battery cell.

[0059] As shown in Figures 3 and 5, the positive electrode current collector plate welding station b shown in this embodiment also includes: a laser welding mechanism 54b, such as a galvanometer; the laser welding mechanism 54b is located in the welding position, and the laser welding mechanism 54b is oriented toward the material extraction pressure head 21b located in the welding position. The laser beam adjusted by the laser welding mechanism 54b passes through the hollow structure of the material extraction pressure head 21b and irradiates the position to be welded on the current collector plate 4b. That is, the laser welding mechanism 54b adjusts the light output angle of the laser beam so that the laser passes through the hollow position of the material extraction pressure head 21b and irradiates the corresponding position to be welded on the positive electrode current collector plate 4b, thereby welding multiple positions to be welded on the positive electrode current collector plate 4b. In some embodiments, as shown in Figures 3 and 5, the positive electrode current collector plate welding station b shown in this embodiment also includes: a dust extraction pipe 55b; one end of the dust extraction pipe 55b extends to the material extraction pressure head 21b in the welding position, and the other end of the dust extraction pipe 55b is connected to the negative pressure mechanism to extract smoke generated during the welding process of the current collector plate 4b and the battery cell. In some embodiments, as shown in Figures 2 and 3, the conveying mechanism 1b shown in this embodiment also includes a slide rail 13b and a driving member; the first collecting plate positioning assembly 11b and the second collecting plate positioning assembly 12b are movably arranged on the slide rail 13b, and the driving member is used to drive the first collecting plate positioning assembly 11b and the second collecting plate positioning assembly 12b to move synchronously or separately, so that one of the collecting plate positioning assemblies is in a loading state while the other collecting plate positioning assembly is in a taking state, thereby realizing alternating loading and loading caching.

[0060] Furthermore, to effectively adsorb the positive electrode current collector, as shown in Figures 6 to 9 , the material removal pressure head 21b in this embodiment includes an adsorption plate 21b1 and a support plate 21b2, wherein the adsorption plate 21b1 and the support plate 21b2 are stacked and closely attached. For example, the adsorption plate 21b1 and the support plate 21b2 are each constructed from a flat plate of a certain thickness, and the adsorption plate 21b1 and the support plate 21b2 are stacked and closely attached together in a common thickness direction. The adsorption plate 21b1 can be used to adsorb and secure the current collector, and the current collector typically abuts the adsorption plate 21b1 from bottom to top, so that the upper end surface of the adsorption plate 21b1 can be attached to the lower end surface of the support plate 21b2. Furthermore, as shown in Figures 6 and 7 , the adsorption plate 21b1 is provided with an attachment surface 21b11 for attaching the current collecting disc, and a welding hole 21b12 extending through the attachment surface 21b11. The attachment surface 21b11 is provided with negative pressure adsorption holes 21b13. A shielding gas passage 21b14 is provided within the adsorption plate 21b1, which connects to the welding hole 21b12. It will be understood that in this embodiment, the adsorption plate 21b1 is provided with an attachment surface 21b11 for placing the current collecting disc, the attachment surface 21b11 is provided with negative pressure adsorption holes 21b13, and the adsorption plate 21b1 is also provided with a welding hole 21b12 extending through the attachment surface 21b11. In actual use, the collecting plate can be placed and attached to the attachment surface 21b11 via an external drive mechanism. Afterwards, the negative pressure adsorption holes 21b13 can generate negative pressure and secure the collecting plate. The welding mechanism can weld the collecting plate via the welding holes 21b12. Furthermore, as shown in FIG6 , the support plate 21b2 is fixedly connected to the surface of the adsorption plate 21b1 opposite the attachment surface 21b11. A negative pressure gas channel 21b21 is provided within the support plate 21b2, which is connected to the negative pressure adsorption holes 21b13 of the adsorption plate 21b1. A shielding gas input hole 21b22 is also provided within the support plate 21b2, which is connected to the shielding gas channel 21b14.

[0061] In this embodiment, a negative pressure gas channel 21b21 is provided within the support plate 21b2. One end of the negative pressure gas channel 21b21 is connected to the negative pressure adsorption hole 21b13, and the other end can be connected to a negative pressure device. The negative pressure device can evacuate the negative pressure gas channel 21b21, thereby generating a negative pressure in the negative pressure adsorption hole 21b13, ultimately securing the collector plate to the attachment surface 21b11. Furthermore, the shielding gas input hole 21b22 on the support plate 21b2 can be connected to a shielding gas delivery device. When welding the collector plate, the shielding gas output by the shielding gas delivery device can reach the welding hole 21b12 via the shielding gas input hole 21b22 and the shielding gas channel 21b14, thereby protecting the welding point. As can be seen, in this embodiment, by stacking the adsorption plate 21b1 and the support plate 21b2, the positions of the negative pressure gas channel 21b21 and the shielding gas channel 21b14 can be rationally arranged, resulting in a simple structure, low manufacturing cost, and a small footprint. In actual use, the shielding gas channel 21b14 can be set inside the adsorption plate 21b1 using a drilling tool or on the end surface of the adsorption plate 21b1 using a slotting tool. Using a slotting tool to set the shielding gas channel 21b14 on the end surface of the adsorption plate 21b1 reduces manufacturing costs.

[0062] In this embodiment, in order to reduce manufacturing costs, the protective gas channel 21b14 is provided on the end surface of the adsorption plate 21b1 facing the support plate 21b2, and the support plate 21b2 is closely attached to the end surface of the adsorption plate 21b1 to close the protective gas channel 21b14.

[0063] As an implementation method, as shown in Figure 7, the adsorption plate 21b1 is attached to the upper end surface of the support plate 21b2 to form a continuous groove structure with an open upper end, and the protective gas input hole 21b22 corresponds to the position of the groove structure in the thickness direction of the support plate 21b2. The groove structure is the protective gas channel 21b14.

[0064] In actual use, the lower end surface of the support plate 21b2 is in close contact with the upper end surface of the adsorption plate 21b1. The close contact between the support plate 21b2 and the adsorption plate 21b1 can close the upper end opening of the shielding gas channel 21b14, thereby forming a delivery channel for delivering shielding gas. Moreover, the shielding gas input hole 21b22 is connected to the shielding gas channel 21b14, and the shielding gas channel 21b14 is connected to the welding hole 21b12. Therefore, when the shielding gas delivery equipment is connected to the shielding gas input hole 21b22, the shielding gas can smoothly reach the welding hole 21b12. In this embodiment, the adsorption plate 21b1 may include a base 21b31 and a receiving seat 21b32, and the attachment surface 21b11 is disposed on the receiving seat 21b32.

[0065] The adsorption plate 21b1 includes a base 21b31 that supports and secures the plate. For example, the base 21b31 can be fixedly connected to the support plate 21b2. Furthermore, the base 21b31 is provided with a circular hole extending through its thickness. A receiving seat 21b32 is fixedly disposed within the circular hole. The receiving seat 21b32 is fixedly connected to the inner wall of the circular hole, allowing the current collecting plate to directly abut against the attachment surface 21b11 of the receiving seat 21b32.

[0066] Optionally, the base 21b31 and the receiving seat 21b32 can be integrally formed. Furthermore, the attachment surface 21b11 on the receiving seat 21b32 can be higher than the lower surface of the base 21b31. Accordingly, to facilitate welding, as shown in FIG8 , the support plate 21b2 is provided with a welding slot 21b24 corresponding to the welding hole 21b12. The welding slot 21b24 is located above the receiving seat 21b32.

[0067] In actual use, after the collecting plate is fixed from bottom to top to the attachment surface 21b11 of the receiving seat 21b32, the welding equipment can weld the collecting plate through the welding slots 21b24 of the support plate 21b2. In this embodiment, there are multiple welding holes 21b12, each of which is connected to the shielding gas channel 21b14.

[0068] As shown in FIG7 , there may be six welding holes 21b12. The receiving seat 21b32 includes a central portion 21b321 and a plurality of extension portions 21b322, which are spaced apart along the circumference of the central portion 21b321. One end of each of the extension portions 21b322 is connected to the central portion 21b321, and the other end is connected to the base 21b31. The welding holes 21b12 are located between adjacent extension portions 21b322.

[0069] Exemplarily, there are six extensions 21b322, spaced sequentially around the center portion 21b321. Each of the six extensions 21b322 has one end connected to the center portion 21b321 and the other end connected to the inner wall of the circular hole. Furthermore, the lower surfaces of the six extensions 21b322 are flush with the lower surface of the center portion 21b321, thereby forming an attachment surface 21b11. Accordingly, six welding holes 21b12 are formed in a circular arrangement between the six extensions 21b322. In actual use, the current collecting plate can be directly placed against the attachment surface 21b11 formed by the extensions 21b322 and the center portion 21b321. The current collecting plate is then secured under the vacuum of the negative pressure adsorption holes 21b13, allowing welding equipment to perform welding on the current collecting plate through the six welding holes 21b12.

[0070] To ensure that each welding hole 21b12 receives shielding gas, in this embodiment, as shown in FIG7 , shielding gas channel 21b14 includes a main flow channel 21b141 and multiple branch flow channels 21b142. The ends of the multiple branch flow channels 21b142 are connected to the welding holes 21b12 in a one-to-one correspondence, and the other ends are connected to the main flow channel 21b141. Shielding gas inlet holes 21b22 are connected to the main flow channel 21b141. Thus, shielding gas can flow through the shielding gas inlet holes 21b22 and the main flow channel 21b141 to the multiple branch flow channels 21b142, and then to the multiple welding holes 21b12, thereby protecting the welding points.

[0071] The negative pressure adsorption holes 21b13 can be provided on the extensions 21b322. For example, each extension 21b322 is provided with a negative pressure adsorption hole 21b13, with the negative pressure adsorption holes 21b13 positioned away from the central portion 21b321 and symmetrically positioned relative to the central portion 21b321. This allows for a uniform adsorption force to be applied to the current collecting plate, preventing positional shifting of the current collecting plate during welding. Alternatively, negative pressure adsorption holes 21b13 can be provided on only four extensions 21b322, with the four negative pressure adsorption holes 21b13 positioned symmetrically with respect to the central portion 21b321.

[0072] In one embodiment, as shown in FIG. 7 , the protective gas channels 21 b 14 may be symmetrically disposed on opposite sides of the attachment surface 21 b 11 .

[0073] Specifically, there are two shielding gas channels 21b14, symmetrically arranged on opposite sides of the attachment surface 21b11. Each shielding gas channel 21b14 includes a main flow channel 21b141 and three branch flow channels 21b142. Each of the three branch flow channels 21b142 has one end connected to the main flow channel 21b141 at a different location, and the other end connected to the welding hole 21b12 at a different location.

[0074] Furthermore, as shown in Figure 7, shielding gas passage 21b14 can connect to the top of receiving seat 21b32 along the thickness of suction plate 21b1. Thus, when the collecting plate is secured to attachment surface 21b11 of receiving seat 21b32 from below, shielding gas passage 21b14 can deliver shielding gas from above receiving seat 21b32 to the welding position of the collecting plate. This arrangement ensures timely shielding gas delivery without interfering with the collecting plate welding process.

[0075] In order to ensure that the shielding gas can fully flow in each welding hole 21b12, as shown in Figure 7, the shielding gas channel 21b14 is provided with a first airflow guiding surface 21b41 and a second airflow guiding surface 21b42 near the welding hole 21b12. The first airflow guiding surface 21b41 and the second airflow guiding surface 21b42 are arranged opposite to each other, and the distance between the first airflow guiding surface 21b41 and the second airflow guiding surface 21b42 gradually increases in the flow direction of the shielding gas.

[0076] In this embodiment, a first airflow guiding surface 21b41 and a second airflow guiding surface 21b42 are provided at the position where the branch flow groove 21b142 is connected to the welding hole 21b12, wherein the first airflow guiding surface 21b41 and the second airflow guiding surface 21b42 are roughly constructed in a V shape, and the opening formed by the two airflow guiding surfaces gradually becomes larger toward the welding hole 21b12. Thus, the shielding gas from the branch flow groove 21b142 can fully flow to various positions of the welding hole 21b12, ensuring that the shielding gas can protect different welding points.

[0077] Since the collecting plate needs to be fixed to the attachment surface 21b11 of the receiving seat 21b32 from below, and the shielding gas channel 21b14 is located above the receiving seat 21b32, in order to ensure that the shielding gas can flow more effectively to the welding point, it is necessary to properly guide the flow direction of the shielding gas. To this end, as shown in Figure 7, a gas flow area is formed between the first airflow guiding surface 21b41 and the second airflow guiding surface 21b42. The shielding gas from the shielding gas channel 21b14 will reach the gas flow area before reaching the welding hole 21b12.

[0078] To guide the flow of shielding gas, as shown in Figure 9, support plate 21b2 is fitted with airflow guide blocks 21b23, positioned protruding from the lower end surface of adsorption plate 21b1. These blocks 21b23 are positioned protruding from the gas flow area, one-to-one with each other. These blocks 21b23 feature guiding surfaces that direct shielding gas downward toward the collecting tray. In actual use, after shielding gas reaches the gas flow area via shielding gas passage 21b14, the guiding surfaces of airflow guide blocks 21b23 direct the shielding gas toward the collecting tray below, effectively protecting the weld points.

[0079] Optionally, the shielding gas input hole 21b22 on the support plate 21b2 can be connected to any position of the main flow channel 21b141. As an implementation method, the shielding gas input hole 21b22 can be constructed as a through hole extending through the thickness of the support plate 21b2, with one end of the through hole opening connected to the main flow channel 21b141. Optionally, the negative pressure gas channel 21b21 on the support plate 21b2 needs to enable negative pressure treatment of the negative pressure adsorption hole by the negative pressure equipment. For ease of processing, as shown in Figure 8, the negative pressure gas channel 21b21 can be provided through the interior of the support plate 21b2 along the length or width direction, and the negative pressure connection hole 21b211 connecting the negative pressure gas channel to the negative pressure equipment can be provided on the upper end surface of the support plate 21b2. Optionally, to improve the sealing effect between the negative pressure adsorption hole 21b13 and the negative pressure gas channel 21b21, a sealing gasket can be provided at the connection between the negative pressure adsorption hole 21b13 and the negative pressure gas channel 21b21.

[0080] Specifically, as shown in Figure 7, the negative pressure adsorption hole 21b13 on the adsorption plate 21b1 is provided with a countersunk hole at one end facing the negative pressure gas channel 21b21, and the sealing gasket can be set in the countersunk hole. At the same time, the sealing gasket abuts against the lower end surface of the support plate 21b2, thereby, the sealing gasket can form an effective seal at the connection between the negative pressure adsorption hole 21b13 and the negative pressure gas channel 21b21.

[0081] In this embodiment, after the positive electrode current collecting plate is welded to the battery cell, a post-weld visual inspection and a Hi-pot test are required, and unqualified products are removed from the production line to ensure production quality.

[0082] As mentioned earlier, the battery cells with welded positive current collector plates will enter the positive electrode encapsulation station C. In the positive electrode encapsulation station C, the positive electrodes of the battery cells will be encapsulated with glue. Afterwards, visual inspection will also be carried out. Unqualified products also need to be removed from the production line to ensure production quality.

[0083] Furthermore, as shown in Figures 10 to 13, in this embodiment, the battery cell shelling station d has a shelling station, and the transport vehicle 10d is capable of moving the battery cells to be processed to the shelling station. The battery cell shelling station d includes: a dust removal mechanism 30d, a battery cell transfer mechanism, a transport mechanism, and a shelling mechanism 40d. The dust removal mechanism 30d has a cleaning station for removing dust from the inner wall of the battery casing; the battery cell transfer mechanism is used to transfer the battery cells on the battery cell transport mechanism to the shelling station; the transport mechanism is used to receive the battery casing and transport the battery casing to the cleaning station, and is also used to transport the battery casing from the cleaning station to the shelling station; the shelling mechanism 40d includes a transport assembly and a shelling assembly. The shelling assembly includes a drive member and a pressure head member. The drive member is mounted on the transport assembly. The pressure head member is used to take the battery casing, and the pressure head member is mounted on the drive member to allow the battery cell to be loaded into the battery casing.

[0084] In this embodiment, to achieve the battery cell shell placement, the transport carrier 10d needs to move the battery cells to be processed to the shell placement station. Afterwards, the transfer mechanism transfers the battery shells supplied by the external equipment to the cleaning station of the dust removal mechanism 30d. It is also used to transfer the battery shells from the cleaning station to the shell placement station. The dust removal mechanism 30d is used to remove dust from the inner wall of the battery shell.

[0085] The battery insertion mechanism 40d includes a transfer assembly 410d and a battery insertion assembly 420d. The battery insertion assembly 420d includes a driver 4202d and a pressure member 4201d. The driver 4202d is mounted on the transfer assembly 410d. The pressure member 4201d is used to remove the battery casing and is mounted on the driver 4202d to facilitate insertion of the battery cell into the battery casing. The driver 4202d can be electrically or pneumatically driven, controlling the vertical movement of the pressure member 4201d relative to the transfer assembly 410d.

[0086] During the operation of the battery cell shelling station d provided in this embodiment, the transport carrier 10d first moves the battery cell to be processed to the shelling station, and the transfer mechanism first transfers the battery shell to the cleaning station. Next, the dust removal mechanism 30d removes dust from the inner wall of the battery shell at the cleaning station. After the inner wall of the battery shell is cleaned, the transfer mechanism transfers the battery shell at the cleaning station to the shelling station, at which time the transport carrier 10d carries and fixes the battery cell. The pressing head component 4201d grabs the battery shell that has arrived at the shelling station, and the battery shell is located above the battery cell. After the transport carrier 10d lifts a part of the battery cell to a preset position in the battery shell, it controls the transport carrier 10d to release the battery cell, and the driving component 4202d controls the pressing head component 4201d to press down the battery shell, so that the battery cell can be loaded into the battery shell.

[0087] The battery cell shelling station d provided in the embodiment of the present application uses a transfer mechanism to transfer the battery shell to the cleaning station, and uses a dust removal mechanism 30d to remove dust from the inner wall of the battery shell at the cleaning station; then the transfer mechanism transfers the battery shell at the cleaning station to the shelling station, and the transport carrier 10d carries and fixes the battery cell; the shell arriving at the shelling station is grabbed by the pressing head 4201d, and after the transport carrier 10d lifts a part of the battery cell to a preset position in the battery shell, the transport carrier 10d is controlled to release the battery cell, and the pressing head 4201d presses down the battery shell, so that the battery cell is loaded into the battery shell, meeting the requirements of vertical shelling.

[0088] In one embodiment, as shown in FIG10 , the battery cell insertion station d provided herein further includes a guide mechanism 20d. The guide mechanism 20d is disposed between the pressing member 4201d and the transport vehicle 10d. The guide mechanism 20d is formed with guide slots for aligning the battery casing used by the pressing member 4201d. When the driving member 4202d controls the pressing member 4201d to press down the battery casing, the guide slots on the guide mechanism 20d are used to align the battery casing. This aligns the battery casing and the battery cell, allowing the battery cell to be loaded into the battery casing.

[0089] In one example, the guide mechanism 20d includes two first clamping members 210d. The two first clamping members 210d are arranged opposite each other. The two first clamping members 210d together form a clamping space for clamping the battery housing. A first guide groove is provided at the top of at least one of the first clamping members 210d. A support structure for supporting the battery housing is formed within the clamping space of the at least one first clamping member 210d. This support structure is used to support the battery housing during guidance. The first guide groove extends from the top of the clamping space toward the support structure, so that during the downward pressing process, the battery housing, guided by the first guide groove, can only move vertically onto the support structure. A third guide groove may also be provided on at least one of the first clamping members 210d. The third guide groove extends from the bottom of the clamping space toward the support structure. This ensures that after the guide mechanism 20d releases the battery housing, the battery housing, guided by the third guide groove, can only be pressed vertically downward from the support structure onto the transport vehicle 10d during continued downward pressing.

[0090] In another example, the guide mechanism 20d includes a guide ring. A clamping space for clamping the battery housing is formed in the guide ring, and a second guide groove is provided at the top of the guide ring. The second guide groove extends from the top of the clamping space toward the bottom of the clamping space, so that when the battery housing is pressed downward, the battery housing can only move in the vertical direction under the guidance of the second guide groove.

[0091] As shown in Figure 15, the dust removal mechanism 30d includes a dust removal assembly 310d and a first lifting member 320d. The dust removal assembly 310d is located at the output end of the first lifting member 320d. The first lifting member 320d is used to adjust the position of the dust removal assembly 310d so that the dust removal assembly 310d is aligned with the inner wall of the battery housing for dust removal.

[0092] In this embodiment, the dust removal assembly 310d includes a plurality of dust removal ducts 3110d and a dust collection device. The dust collection duct 3110d is provided at the dust extraction end of the dust collection device. The dust collection duct 3110d is provided on the first lifting member 320d alone, or the dust collection duct 3110d and the dust collection device are provided on the first lifting member 320d together. The first lifting member 320d can be electrically or pneumatically driven to lift the dust collection duct 3110d as needed, so that the dust collection duct 3110d moves between a first position close to the inner wall of the battery housing and a second position away from the inner wall of the battery housing.

[0093] During operation, when the first lifting member 320d drives the dust removal duct 3110d to the first position, the dust collection device is controlled to be turned on and the inner wall of the battery housing is dusted by negative pressure adsorption. When the first lifting member 320d drives the dust removal duct 3110d to the second position, the dust collection device is controlled to be turned off to stop dusting the inner wall of the battery housing.

[0094] In other embodiments, the dust removal assembly 310d may also adopt a cleaning head and a motor. The rotating end of the motor is connected to the cleaning head, and the cleaning head is driven to rotate by the motor. The cleaning head is arranged separately on the first lifting member 320d, or the cleaning head and the motor are arranged on the first lifting member 320d together. The first lifting member 320d can select an electric control drive or a pneumatic control drive to lift the cleaning head as needed, so that the cleaning head moves between a first position close to the inner wall of the battery housing and a second position away from the inner wall of the battery housing. During operation, when the first lifting member 320d drives the cleaning head to the first position, the motor is controlled to be turned on to utilize the cleaning head to clean the inner wall of the battery housing. And when the first lifting member 320d drives the cleaning head to the second position, the motor is controlled to be turned off to stop cleaning the inner wall of the battery housing.

[0095] Based on the above embodiments, in some embodiments, as shown in Figures 11 to 13, the transport vehicle 10d includes a mounting seat 1100d, a mounting platform 1200d, a clamping assembly 1300d, and a drive assembly 1400d. The mounting platform 1200d is arranged relative to the mounting seat 1100d; the clamping assembly 1300d includes a transmission structure and two clamping plates 1330d, the two clamping plates 1330d are slidably mounted on the mounting platform 1200d, and one end of the transmission structure is fixedly connected to the two clamping plates 1330d respectively; the drive assembly 1400d is mounted on the mounting seat 1100d, and the drive assembly 1400d is connected to the other end of the transmission structure. The drive assembly 1400d drives the clamping assembly 1300d to clamp the battery cell through the transmission structure. The drive assembly 1400d and the transmission structure provided in this application can drive the two clamping plates 1330d of the clamping assembly 1300d to open and close to firmly clamp the battery cell, and the positioning and clamping accuracy is high, which can meet higher process requirements.

[0096] Specifically, the drive assembly 1400d includes a first lifting structure 1410d, which is arranged opposite the transmission structure. The transmission structure includes a push rod 1310d and two hinged rods 1320d. The first lifting structure 1410d is used to lift one end of the push rod 1310d. One end of the two hinged rods 1320d is hinged to the other end of the push rod 1310d. Two clamping plates 1330d are respectively connected to the other ends of the two hinged rods 1320d. A clamping space for clamping a battery cell is formed between the two clamping plates 1330d. The battery cell is installed in the clamping space, and the two sides of the battery cell abut against the two clamping plates 1330d. The first lifting structure 1410d can be set as a cylinder with a vertical stroke, which is used to lift the push rod 1310d. The push rod 1310d further drives the hinged rod 1320d while moving. The hinged rod 1320d contracts or opens to open or close the two clamps 1330d, so that the battery cell can be firmly clamped in the clamping space.

[0097] In an optional embodiment, the present application utilizes a "three-point positioning" method to clamp the battery cells, achieving a more ideal clamping effect and significantly improving the unstable clamping and production efficiency issues commonly encountered in the art. Specifically, based on the above-described technical solution, one clamping plate 1330d is provided with a set of rollers 1340d, and the other clamping plate 1330d is provided with two sets of rollers 1340d. These three sets of rollers 1340d, mounted at different positions on the clamping plates 1330d, securely position the cylindrical battery cells through point contact. It should be noted that each set of rollers 1340d includes two rollers 1340d spaced vertically in sequence, which provides a good and stable clamping effect for the cylindrical battery cells. Of course, each set can have one or more rollers 1340d, and this is not limited to this. It should also be noted that the rollers 1340d are in rolling contact with the sidewalls of the battery cells, resulting in lower friction and less likely to damage the battery cells during the clamping process, thereby affecting their quality.

[0098] Furthermore, as shown in Figures 11 to 13, the opening and closing of the clamping plate 1330d is crucial for battery cell processing. To achieve a stable and smooth opening and closing effect, the coordination and connection between the structures are more efficient and easy. The transport vehicle 10d provided in this application also includes a mounting plate 1210d slidably connected to the mounting platform 1200d, and a clamping assembly 1300d slidably connected to the mounting plate 1210d.

[0099] Specifically, the clamping assembly 1300d also includes a first slide rail 1211d and a second slide rail 1212d spaced apart on the mounting plate 1210d. The first slide rail 1211d extends in a first direction, and two clamping plates 1330d are respectively slidably connected to the first slide rail 1211d. The second slide rail 1212d extends in a second direction. The push rod 1310d is slidably connected to the second slide rail 1212d. The first direction is perpendicular to the second direction. In the technical solution provided in this embodiment, the first direction is horizontal and the second direction is vertical. The push rod 1310d slides in the vertical direction via the second slide rail 1212d, and the two clamping plates 1330d slide in the horizontal direction via the first slide rail 1211d. It should be noted that under the driving action of the first lifting structure 1410d, the push rod 1310d moves in the vertical direction, and the two clamping plates 1330d hinged thereto have a relatively close or relatively distant movable range to clamp or release the battery cell. It should be noted that, in actual application, in order to meet the requirements of the battery cell process, the first direction and the second direction may also adopt directions other than the horizontal and vertical directions.

[0100] As mentioned above, for the clamping of the battery cell, the "three-point positioning" method can be used to improve the clamping accuracy, so that the side wall of the battery cell is in stable contact with the clamping plate 1330d. In addition, in order to achieve a good clamping effect, a moderate clamping force is also indispensable. Specifically, in the technical solution provided in the present application, the clamping assembly 1300d also includes two tension springs 1350d, and the two ends of each tension spring 1350d are respectively connected to each clamping plate 1330d, and the two tension springs 1350d are arranged in parallel and are centrally symmetrically distributed. In this way, the two tension springs 1350d are respectively connected to the clamping plate 1330d, so that the clamping plate 1330d tightly clamps the battery cell in the initial state due to the elastic force of the tension spring 1350d, and the clamping plate 1330d is driven to open by the driving action of the first lifting structure 1410d.

[0101] It should be noted that the clamping effect should be moderate, and too much is as bad as too little. During the production process, it is often the case that the splint 1330d clamps the battery cell too tightly, causing damage to the battery cell. In view of this, as shown in Figures 11 to 13, the present application adds a limiting mechanism, that is, a screw hole 1331d is provided on one splint 1330d, and a limiting block 1332d is provided on one side of the other splint 1330d. The clamping assembly 1300d also includes a screw rod 1333d passing through the screw hole 1331d. When each splint 1330d clamps the battery cell, the screw rod 1333d abuts against the limiting block 1332d, so that the movable stroke of the splint 1330d is fixed. Generally, the screw rod 1333d can be adjusted to match the clamping distance between the two splints 1330d with the diameter of the battery cell, effectively avoiding the problem of damaging the battery cell. In addition, by adjusting the screw rod 1333d, the use requirements of battery cells of different sizes can also be met. It should be noted that to meet the needs of different processes, the production process has multiple workstations. To accommodate these multiple workstations, the transport vehicle 10d needs to have a corresponding range of motion. Specifically, in the technical solution provided in this application, the drive assembly 1400d also includes a second lifting structure 1420d disposed on the mounting seat 1100d. The first lifting structure 1410d is disposed on the second lifting structure 1420d. The second lifting structure 1420d is used to drive the mounting plate 1210d to slide along the mounting platform 1200d.

[0102] Furthermore, as shown in Figures 11 to 13, mounting platform 1200d is provided with a third slide rail 1213d extending in the second direction, and mounting plate 1210d is slidably connected to third slide rail 1213d. If there are multiple vertical workstations, mounting platform 1200d can be provided with third slide rail 1213d along the vertical direction, and mounting plate 1210d can be slidably connected to third slide rail 1213d, thereby allowing clamping assembly 1300d to move vertically. This allows for vertical movement according to process requirements, flexibly adapting to various process requirements.

[0103] During vertical movement of the transport vehicle 10d, after the lifting cylinder descends, the transport vehicle 10d descends due to its own weight. To mitigate impact loads, the technical solution provided in this application includes a first stopper plate 1220d protruding from the side of the mounting platform 1200d facing the mounting plate 1210d, and a second stopper plate 1230d protruding from the side of the mounting plate 1210d facing the mounting platform 1200d. An elastic member 1240d is provided between the first and second stopper plates 1220d, 1230d, and a buffer 1250d is also provided on the first stopper plate 1220d. The provision of the elastic member 1240d and the buffer 1250d effectively mitigates impact loads, ensuring the safe and stable operation of the structure.

[0104] Moreover, in order to ensure that the cylinder does not damage the mechanical structures in various places, a high-strength glue can be set at the junction of the cylinder and the structure, so that the impact load of the cylinder can also be softened by the high-strength glue to prevent structural damage caused by hard collisions. In addition, in order to ensure the vertical load-bearing effect of the battery cell, the mounting plate 1210d in this solution is also provided with a connecting plate extending in the horizontal direction, and a supporting cup 1214d is provided on the connecting plate. The supporting cup 1214d lifts the battery cell from the bottom of the battery cell. The supporting cup 1214d can also be set as a conductive structure. When performing a short-circuit test on the battery cell, the cylindrical battery cell can complete this process on the carrier, eliminating the trouble of repeated disassembly and assembly, and improving the detection efficiency. It should be noted that an opening is provided on the connecting plate, and the push rod 1310d can be movably passed through the opening for movement.

[0105] As shown in Figures 11 to 13, the transport vehicle 10d is also equipped with a position sensor. The position sensor is used to detect the position of the battery cell within the battery housing. After the battery cell is lifted to a predetermined position within the battery housing, the drive assembly 1400d is controlled via the transmission structure to drive the two clamps 1330d to release the battery cell. The position sensor, which can be a position switch or other sensor, can be installed on one side of the battery housing to directly detect the position of the battery cell within the battery housing. To transport the battery using the transport assembly 410d, as shown in Figure 15, the transport assembly 410d includes a first slide 4110d and a second slide 4120d. A driver 4202d is slidably mounted on the first slide 4110d, and the first slide 4110d is configured to drive the driver 4202d in a first horizontal direction. The first slide 4110d is slidably mounted on the second slide 4120d, and the second slide 4120 is configured to drive the first slide 4110 and the driver 4202d in a second horizontal direction.

[0106] Specifically, the first slide 4110d includes a first drive screw and a first slide. The first drive screw is used to drive the first slide to move in a first direction. The drive member 4202d is fixed to the first slide, so that the first drive screw can drive the drive member 4202d and the pressing member 4201d to move in the first direction. The second slide 4120d includes a second drive screw and a second slide. The second drive screw is used to drive the second slide to move in a second direction. The first slide 4110d is fixed to the second slide, so that the second drive screw can drive the first slide 4110d and various components disposed on the first slide 4110d to move in the second direction. For example, the first slide 4110d is used to control the X-axis coordinate of the pressing member 4201d in the horizontal plane, while the second slide 4120d is used to control the Y-axis coordinate of the pressing member 4201d in the horizontal plane. This allows the pressing member 4201d to access the battery casing within a plane.

[0107] To simplify the structure, in other embodiments, the transport assembly further includes a rotating member. The pressing member 4201d is disposed on the rotating member via a driving member 4202d, and the rotating member is used to drive the pressing member 4201d to rotate so as to access the battery housing.

[0108] Among them, the rotating part includes a main mounting seat, a pressing head part fixing clamping device and a rotation driving device. The pressing head part fixing clamping device includes a loading seat rotatably installed on the main mounting seat along the left and right axis. The loading seat is used to set the pressing head part 4201d. The rotation driving device is arranged on the main mounting seat to drive the pressing head part fixing clamping device and the pressing head part 4201d thereon to rotate.

[0109] Optionally, the way that the pressing head part 4201d takes the battery shell includes one of negative pressure suction, magnetic suction or clamping. When the negative pressure suction method is adopted, the pressing head part 4201d is an air suction clamp, and the air suction clamp is arranged on the transfer component. When the air suction clamp is opposite to the battery shell, the battery shell can be grasped by the action of negative pressure. When the magnetic suction method is adopted, the pressing head part 4201d is a magnetic clamp, and the magnetic clamp is arranged on the transfer component. When the magnetic clamp is opposite to the battery shell, the battery shell can be grasped by the action of magnetic adsorption. When the direct grasping method is adopted, the pressing head part 4201d includes two opposing clamps, and the battery shell can be grasped or released by adjusting the size of the clamping space between the clamps. In addition, the pressing head part 4201d is designed with a spring buffer mechanism and is equipped with a pressure sensor. The pressure sensor detects the magnitude of the pressure in real time to ensure that the product will not be crushed when entering the shell.

[0110] During the operation of the vertical shell-entering device for cylindrical batteries provided in this embodiment, the transfer mechanism first transfers the battery shell to the cleaning station, and the dust removal mechanism 30d removes dust from the inner wall of the battery shell at the cleaning station. After the inner wall of the battery shell is cleaned, the transfer mechanism transfers the battery shell at the cleaning station to the shell-entering station. At this time, the transport carrier 10d carries and fixes the battery cell. The pressing head component 4201d grabs the battery shell that has arrived at the shell-entering station, and the battery shell is located above the battery cell. After the transport carrier 10d lifts a part of the battery cell to a preset position in the battery shell, it controls the transport carrier 10d to release the battery cell, and the driving component 4202d controls the pressing head component 4201d to press down the battery shell, so that the battery cell can be loaded into the battery shell.

[0111] As shown in Figures 10 to 13, the method for vertically inserting cylindrical battery cells into shells is as follows: After the device is activated, the transfer mechanism first transfers the battery shell to the cleaning station. The first lifting member 320d is controlled to drive the dust removal duct 3110d to the first position, and the dust collection device is controlled to activate, using negative pressure suction to remove dust from the inner wall of the battery shell. After cleaning is complete, the first lifting member 320d drives the dust removal duct 3110d to the second position, and the dust collection device is controlled to deactivate, stopping dust removal from the inner wall of the battery shell. The transfer mechanism transfers the battery shell from the cleaning station to the shell insertion station, where the transport carrier 10d carries and secures the battery cell. The pressing member 4201d grasps the battery shell at the shell insertion station, positioning it above the battery cell. After the transport carrier 10d lifts a portion of the battery cell to a predetermined position within the battery shell, the transport carrier 10d is controlled to release the battery cell, and the driver 4202d controls the pressing member 4201d to press down on the battery shell, allowing the battery cell to be inserted into the shell. Driven by the first lifting structure 1410d, the transport vehicle 10d clamps or releases the battery cell, and the jack 1310d moves in the vertical direction, so that the two clamping plates 1330d hinged thereto have a relatively close or relatively far movable stroke to clamp or release the battery cell.

[0112] Furthermore, in this embodiment, as shown in Figures 14 and 15, the positive electrode column welding station d has a correction station, and the transport vehicle 10d can move the battery cell to be processed to the correction station. The positive electrode column welding station includes: a column 20e, a drive mechanism 30e, and a correction mechanism 40e. The column 20e is used to be set on the ground. The drive mechanism 30e is installed on the column 20e; the correction mechanism 40e includes a positioning component 410e and a correction component 420e. The positioning component 410e is installed at the output end of the drive mechanism 30e, and the correction component 420e is installed on the positioning component 410e. When the transport vehicle 10d reaches the correction station, the correction mechanism 40e is coaxially arranged with the transport vehicle 10d.

[0113] Next, the functions and working principles of each component are introduced in detail. First of all, the column 20e serves as the foundation of the entire device. It is stably set on the ground, providing a solid foundation for the entire device. The height and diameter of the column 20e can be adjusted according to actual needs to meet the battery pole correction requirements of different scenarios and specifications. The driving mechanism 30e is installed on the column 20e, and its main function is to provide power so that the correction device can operate automatically. The driving mechanism 30e can adopt motor, pneumatic or hydraulic drive, and the specific selection should be determined according to the actual application scenario and needs. The correction mechanism 40e is the core part of this embodiment, which includes a positioning component 410e and a correction component 420e. The positioning component 410e is installed at the output end of the driving mechanism 30e, and its main function is to preliminarily determine the fit to cooperate with the downward pressure to complete the shell entry. The correction component 420e is installed on the positioning component 410e and is responsible for implementing specific correction actions.

[0114] During the operation, the battery cell and the battery shell follow the magnetic levitation line. After arriving at this station, the transport carrier carries the battery cell, and the positioning component 410e holds the battery shell tightly. Driven by the drive mechanism 30e, the battery shell and the battery cell are pressed concentrically. During the whole process, the correction component 420e concentrically positions the battery shell and the battery cell, so that the battery cell and the battery shell are coaxially positioned. It is worth mentioning that the correction device can also be equipped with a monitoring system to monitor the correction process in real time to ensure the quality and safety of the correction. The monitoring system can detect the correction status of the battery cell, such as correction speed, correction force, etc., and adjust the correction parameters in time to achieve the best correction effect.

[0115] The cylindrical battery pole correction device in this embodiment, by arranging a correction mechanism 40e on the column 20e, can use the positioning component 410e of the correction mechanism 40e to hold the battery shell tightly. In the process of positioning and pressing down the battery cell and the battery shell, the correction component 420e of the correction mechanism 40e can re-position and correct the battery shell, and drive the correction mechanism 40e to press down through the driving mechanism 30e, thereby ensuring the concentricity of the positive pole of the battery cell and the battery shell, and avoiding the problem of cold welding caused by the welding of the positive pole in the subsequent process.

[0116] In some embodiments, as shown in Figures 14 and 15, the positioning assembly 410e is used to position the battery housing; the positioning assembly 410e is coaxially arranged with the correction assembly 420e, and the correction assembly 420e passes through the positioning assembly 410e. The correction assembly 420e is movable along the axial direction of the positioning assembly 410e to correct the position of the pole end of the battery housing and the battery cell. During operation, the positioning assembly 410e grabs and positions the battery housing, the transport vehicle 10d carries the battery cell, and the positioning assembly 410e holds the battery housing tightly. At this time, the correction assembly 420e is controlled to press down through the pole end of the battery housing to position the battery housing. Under the drive of the driving mechanism 30e, the battery housing and the battery cell are pressed concentrically. During the process, the correction assembly 420e concentrically fixes the battery housing and the battery cell so that the battery cell and the battery housing are coaxially positioned.

[0117] As shown in Figure 15, correction assembly 420e includes a push rod 4210e and a positioning pin 4220e. Push rod 4210e is mounted at the axis of positioning assembly 410e, and positioning pin 4220e is mounted at the output end of push rod 4210e. Push rod 4210e is a combination of an electric push rod and a pneumatic cylinder. Since positioning pin 4220e is mounted at the output end of push rod 4210e, push rod 4210e can control the axial movement of positioning pin 4220e along positioning assembly 410e.

[0118] Specifically, the positioning assembly 410e is provided with a slide groove arranged along its axial direction, and the push rod 4210e can move along the slide groove. During operation, when the push rod 4210e moves in the slide groove, it can control the positioning pin 4220e to penetrate into the battery shell and the battery cell, or separate from the battery shell and the battery cell, so as to complete the positioning of the battery shell and the battery cell. For positioning, a pressure plate 4230e is provided on the peripheral wall of the positioning pin 4220e. A pin head is provided at the bottom of the positioning pin 4220e, and a pressure plate 4230e is provided around the pin head for positioning with the battery shell. In the process of positioning the battery cell and the battery shell, the pressure plate 4230e can complete the positioning with the battery shell, and the pin head is inserted into the battery shell and the battery cell at the same time, which can position and correct the battery shell. In order to ensure the stability and safety of the battery cell in the battery shell, the design and application of the positioning pin 4220e is particularly important. The positioning pin 4220e can not only achieve precise positioning of the battery cell and the battery shell, but also correct the battery shell to ensure a tight fit between the battery cell and the battery shell. During the battery assembly process, the pin head of the positioning pin 4220e and the pressure plate 4230e play a key role. During the process of positioning and pressing the battery cell and the battery shell, the pin head can ensure that the contact surface between the battery cell and the battery shell is in full contact, thereby improving the performance of the battery. At the same time, the pressure plate 4230e reduces the gap between the battery cell and the battery shell by applying pressure to the battery shell, further improving the sealing performance of the battery.

[0119] In addition, the design of the locating pin 4220e also needs to consider factors such as the material, size and shape of the battery cell and battery shell. Depending on the different battery types and application scenarios, the size, shape and material selection of the locating pin 4220e will also vary. In order to ensure the reliability and safety of the battery, the locating pin 4220e needs to match the size of the battery shell and the battery cell to achieve precise positioning and correction. To meet the positioning requirements, the pin head of the locating pin 4220e is provided with a chamfer that is compatible with the battery shell and the battery cell. The chamfer design is intended to ensure that the battery cell is well fixed in the shell, while avoiding performance degradation due to friction between the battery cell and the shell. In actual applications, the chamfered pin head of the locating pin 4220e can easily enter the battery shell and the battery cell hole, thereby ensuring the concentricity of the battery cell and the positive pole of the battery shell.

[0120] Optionally, as shown in Figures 14 to 15, the way in which the positioning component 410e takes the battery shell includes one of negative pressure suction, magnetic suction or clamping. When the negative pressure suction method is adopted, the positioning component 410e is an air suction clamp, and the air suction clamp is arranged at the output end of the driving mechanism 30e. When the air suction clamp is opposite to the battery shell, the battery shell can be grasped by the action of negative pressure. When the magnetic suction method is adopted, the positioning component 410e is a magnetic clamp, and the magnetic clamp is arranged at the output end of the driving mechanism 30e. When the magnetic clamp is opposite to the battery shell, the battery shell can be grasped by the action of magnetic adsorption. When the direct grasping method is adopted, the positioning component 410e includes two opposing clamps, and the battery shell can be grasped or released by adjusting the size of the clamping space between the clamps.

[0121] In addition, the positioning assembly 410e is designed with a spring buffer mechanism and is equipped with a pressure sensor. The pressure sensor detects the magnitude of the pressure in real time to ensure that the product will not be crushed when entering the shell. Based on the above embodiment, in one embodiment, as shown in Figures 14 and 15, the positioning assembly 410e is a multi-claw cylinder, which includes a cylinder body 4110e and a clamping claw 4120e. The clamping claw 4120e slides along the radial direction of the cylinder body 4110e to clamp and position the battery shell; the correction assembly 420e is located at the center of the cylinder body 4110e and moves along the axial direction of the cylinder body 4110e to correct the pole end of the battery shell and the position of the battery cell. Specifically, the multi-claw cylinder can adopt a three-claw cylinder, and the corresponding three-claw cylinder is provided with three clamping claws 4120e arranged along a ring to grab the battery cell shell, and the clamping claw 4120e can be controlled by the three-claw cylinder to grab or release the battery shell. After the three-claw pneumatic cylinder grasps the battery casing, the alignment assembly 420e is controlled to press down through the terminal end of the battery casing to position the battery casing. Then, driven by the drive mechanism 30, the battery casing and the battery cell are pressed concentrically. Throughout this process, the alignment assembly 420e aligns the battery casing and the battery, ensuring that the battery cell and the battery casing are coaxially positioned.

[0122] In another embodiment, the positioning assembly may be a rotary cylinder comprising a cylinder body and a rotating jaw. The rotating jaw slides radially along the cylinder body to grasp and position the battery casing. Unlike multi-jaw cylinders, the rotating jaw of a rotary cylinder is a single jaw, which is driven by the rotating cylinder to grasp and release the battery casing. The correction assembly is located at the center of the cylinder body and moves axially along the cylinder body to correct the position of the battery casing's terminal end and the battery cell.

[0123] As shown in FIG. 14 and FIG. 15 , the correction mechanism 40 e further includes a coordinate sensor installed on one side of the positioning assembly 410 e . The coordinate sensor is used to locate the position point of the battery housing to control the driving mechanism 30 e .

[0124] During operation, the coordinate sensor locates the position of the battery shell in real time and transmits the position information to the corresponding control mechanism to control the operation of the drive mechanism 30e through the control mechanism, thereby ensuring that the battery cell can be smoothly introduced into the battery shell when the shell is pressed down.

[0125] As shown in Figures 14 and 15, the drive mechanism 30e includes a vertically movable slide 310e and a first power assembly 320e. The output end of the first power assembly 320e is connected to a slider 330e, which is movably mounted on the vertically movable slide 310. The output end of the first power assembly 320 is connected to a positioning assembly 410e via the slider 330e. The positioning assembly 410e is connected to the output end of the first power assembly 320e via the slider 330e, allowing the first power assembly 320e to control the downward pressure of the positioning assembly 410e, thereby allowing the battery cell to be inserted into the battery housing.

[0126] In a specific embodiment, as shown in Figures 14 and 15, the method for vertically inserting the cylindrical battery cell into the shell is as follows: after the device is turned on, the battery cell and the battery shell follow the magnetic levitation line. After arriving at this station, the transport vehicle 10d moves the battery cell to be processed to the correction station, and the positioning component 410e grabs the battery shell, and the battery shell is located above the battery cell. After the transport vehicle 10e lifts a part of the battery cell to a preset position in the battery shell, the transport vehicle 10e is controlled to release the battery cell, and the drive mechanism 30e controls the correction mechanism 40e to press down the battery shell, so that the battery cell can be loaded into the battery shell. Under the driving action of the first lifting structure 1410e, the transport vehicle 10d clamps or releases the battery cell, and the push rod 1310e moves in the vertical direction, so that the two clamps 1330 hinged to it have a relatively close or relatively far movable stroke to clamp or release the battery cell. During the entire process, the correction component 420e concentrically positions the battery housing and the battery, so that the battery cell and the battery housing are coaxially positioned.

[0127] In the production line of this embodiment, after the positive electrode pole is inspected and welded, the battery cell needs to be flipped 180° in the vertical plane so that the negative electrode of the battery cell faces upward, so as to facilitate the subsequent welding of the negative electrode collector plate to the battery cell. Moreover, in this embodiment, the structure of the negative electrode collector plate welding station f is roughly the same as that of the positive electrode collector plate welding station b. Both stations weld the received collector plates to the battery cell. For the sake of brevity, the structure of the negative electrode collector plate welding station is no longer described here. Similarly, in this embodiment, after the negative electrode collector plate is welded to the battery cell, post-weld visual inspection and Hi-pot testing are also required, and unqualified products are removed from the production line to ensure production quality. In addition, in some embodiments, a detection mechanism is also provided at the negative electrode collector plate welding station f and the collector plate side welding station g, which is used to address and correct the weld seam of the battery cell.

[0128] Furthermore, in this embodiment, as shown in Figures 16 to 19 , a transport vehicle 3g can move the battery cells to be processed to the collector tray side welding station g. The collector tray side welding station g includes a side welding mechanism 1g. The welding mechanism 1g includes a bracket 11g, a welding head 12g, and an angle adjustment assembly 13g. The angle adjustment assembly 13g includes a first angle adjustment disk 131g and a second angle adjustment disk 132g. The first angle adjustment disk 131g is rotatably mounted on the bracket 11g on a first plane. The second angle adjustment disk 132g is connected to the first angle adjustment disk 131g. The welding head 12g is rotatably mounted on the second angle adjustment disk 132g on a second plane.

[0129] Specifically, the collector plate-side welding station shown in this embodiment adapts to different battery cell models by adjusting the angle of the welding head 12g in two dimensions. The welding head 12g and the angle adjustment assembly 13g rotate on a first plane, and the welding head 12g rotates on a second plane. The first and second planes intersect. By adjusting the orientation and angle of the welding head 12g in two dimensions, the angular range of the welding head 12g is increased. This two-rotation adjustment method can meet the welding requirements of the collector plates on different battery cell models, improving adjustment efficiency and ensuring overall commissioning efficiency. The first and second planes can be perpendicular to each other or at an acute angle.

[0130] In some embodiments, as shown in FIG16 , the angle adjustment assembly 13g shown in this embodiment further includes a first angle pointer 133g and a second angle pointer 134g; the first angle pointer 133g is connected to the first angle adjustment disk 131g, and the second angle pointer 134g is connected to the welding head 12g. The bracket 11g is provided with a scale line corresponding to the first angle pointer 133g, and the second angle adjustment disk 132 is provided with a scale line corresponding to the second angle pointer 134. Specifically, depending on the battery cell model, after the first angle adjustment disk 131 is rotated and adjusted, the first angle pointer 133g corresponds to the first scale value, and after the welding head 12g is rotated and adjusted, the second angle pointer 134g corresponds to the second scale value. By recording these two scale values, a correspondence between the battery cell model and the scale value is established. After the battery cell model is changed, the welding head 12g can be quickly adjusted based on this correspondence, thereby improving debugging efficiency.

[0131] In some embodiments, the collector tray-side welding station g shown in this embodiment can be directly installed on the side of the battery cell transport mechanism, for example, it can be installed on the side and above the transport vehicle 3g. While the transport vehicle 3g is transporting the battery cells, the collector tray-side welding station shown in this embodiment can directly weld the battery cells on the transport vehicle 3g.

[0132] As shown in Figures 17 and 18, the collector plate welding station of this embodiment further includes a detection mechanism 2g. The detection mechanism 2g is located at the identification station, the welding mechanism 1g is located at the welding station, and the transport vehicle 3g is movably positioned between the identification station and the welding station. The detection mechanism 2g is used to obtain angle information of the collector plate within the housing 4g on the transport vehicle 3g. The welding mechanism 1g is used to control the rotating pressure head 14g based on this angle information to rotate the housing 4g and the collector plate on the transport vehicle 3g to a corresponding angle. Specifically, by detecting the angle of the collector plate before welding and first correcting it with the rotating pressure head 14g, the welding head 12g can avoid non-welding areas on the collector plate, thereby ensuring the accuracy of subsequent welding positions.

[0133] It should be noted that the transport carrier 3g is indicated by dashed lines at the identification station in Figure 17. Furthermore, transport carriers may have different numbers at different stations, but these differently numbered transport carriers may have the same or different structures. The detection mechanism 2g may be a camera that takes a picture of the collector tray and compares it with a reference to determine the collector tray's angle.

[0134] As shown in FIG18 , for a multi-petal special-shaped collecting disc, a plurality of welding areas are circumferentially spaced apart on the edge of the collecting disc. The welding areas are indicated by section lines in FIG18 , that is, the welding areas on the edge of the collecting disc are distributed in multiple sections. Accordingly, the rotation mode of the rotary pressure head 14g is also multi-section rotation, or the rotary pressure head 14g rotates continuously in the same direction and is combined with intermittent welding to match the welding area and ensure sufficient welding.

[0135] In some embodiments, as shown in Figure 19, the transport carrier 3g shown in this embodiment includes a stand 31g, a lifting drive member 32g and a support cup 33g; the lifting drive member 32g is arranged on the stand 31g, and the support cup 33g is rotatably connected to the lifting end of the lifting drive member 32g; when the transport carrier 3g is located at the welding station, the support cup 33g and the rotary pressure head 14g are arranged opposite to each other along the axial direction of the shell, the support cup 33g is used to abut the bottom of the shell 4g, and the rotary pressure head 14g is used to abut against the collecting plate.

[0136] Specifically, the shell 4g is vertically positioned on the support cup 33g. After the detection at the identification station is completed, the transport carrier 3g drives the shell 4g to move to the welding station. At this time, the rotating pressure head 14g and the support cup 33g are arranged relative to each other, and the lifting drive 32g drives the support cup 33g to rise until the rotating pressure head 14g abuts against the collecting disk in the shell 4g. The collecting disk and the shell 4g abut under the action of the rotating pressure head 14g and the support cup 33g. When the rotating pressure head 14g rotates, it can drive the collecting disk and the shell 4g to rotate synchronously. During the rotation process, the support cup 33g acts as a driven member. Among them, the lifting drive 32g can lift the support cup 33g by electromagnetic thrust, thereby lifting the support cup 33g in a non-contact manner, which can play a certain buffering role.

[0137] In some embodiments, as shown in Figures 18 and 19, the transport vehicle 3g shown in this embodiment also includes a positioning clamp 34g, which is connected to the lifting end of the lifting drive 32g. The positioning clamp 34g is used to clamp the shell 4g along the radial direction of the shell 4g. Through the radial positioning of the positioning clamp 34g, the axis of the shell 4g coincides with the axis of the rotating pressure head 14g and the support cup 33g.

[0138] As shown in Figure 19, the positioning clamp 34g shown in this embodiment is provided with a roller 35g on the side close to the shell 4g. The roller 35g is rotatably connected to the positioning clamp 34g, and the roller 35g is connected to the outer wall surface of the shell 4g. During the rotation of the shell 4g, the roller 35g can be driven to rotate synchronously, that is, the shell 4g can always be radially positioned during the rotation process, thereby ensuring the stability of the shell 4g.

[0139] In some embodiments, as shown in Figures 16 and 18, the welding mechanism 1g shown in this embodiment includes a rotating driving member 15g, the driving end of the rotating driving member 15g is connected to the rotating pressure head 14g, the rotating pressure head 14g is used to abut against the collecting plate, and the rotating driving member 15g is communicatively connected with the detection mechanism 2g. The rotating driving member 15g first corrects the collecting plate according to the angle information detected by the detection mechanism 2g, and adjusts the welding area of ​​the collecting plate to a position corresponding to the welding head 12g.

[0140] The rotating drive member 15g may be a servo motor to meet the multi-stage rotation requirements in the subsequent welding process.

[0141] As shown in Figures 16 and 17, the welding mechanism 1 shown in this embodiment also includes a dust suction pipe. When the transport vehicle 3g is located at the welding station, a dust hood 16g at one end of the dust suction pipe is rotatably mounted on the bracket 11g. The other end of the dust suction pipe is connected to the negative pressure mechanism. When the negative pressure mechanism is activated, the dust suction pipe sucks the smoke and dust generated during the welding process. Specifically, the bracket 11g is provided with a plurality of arc-shaped waist-shaped holes 111g, which are arranged circumferentially around the axis of the rotating drive member 15g. The dust hood 16g can be selectively connected to one of the arc-shaped waist-shaped holes 111g to match the welding angle of the welding head 12g adjusted by the angle adjustment assembly 13g.

[0142] The dust suction pipe shown in this embodiment is provided with a regulating valve and an anemometer, which detects the wind speed in the dust suction pipe. When the wind speed does not meet the requirements, the regulating valve is used to adjust the flow in the dust suction pipe.

[0143] As shown in Figures 16 and 17, the welding mechanism of this embodiment further includes a shielding gas blowing head 17g, which is rotatably mounted on a bracket 11g. Specifically, the shielding gas blowing head 17g is connected to the bracket 11g via a multi-jointed connecting arm. The angle and orientation of the shielding gas blowing head 17g are adjusted to match the welding angle of the welding head 12g adjusted by the angle adjustment assembly 13g.

[0144] In some embodiments, as shown in Figures 16 and 17, the welding mechanism 1g shown in this embodiment further includes a height adjustment assembly 18g, through which the welding head 12g is connected to the bracket 11g. When the height adjustment assembly 18g is adjusted, it drives the angle adjustment assembly 13g and the welding head 12g to rise and fall synchronously, allowing the welding head 12g to move to the correct welding position. The height adjustment assembly 18g can be a screw drive assembly, in which the handwheel drives the screw to rotate, and the screw nut moves on the screw, thereby driving the welding head 12g to rise and fall.

[0145] This embodiment also provides a welding method, which is applied to the collector plate side welding station as described above, including: obtaining pre-welding information of the battery cell, the pre-welding information being the battery cell model and / or battery cell position; and rotating the first angle adjustment plate and / or the welding head according to the pre-welding information.

[0146] In this step, when debugging based solely on the battery cell model, the first angle adjustment dial is rotated according to the correspondence between the battery cell model and the scale value, thereby adjusting the first angle pointer to the corresponding scale value; the welding head is rotated to adjust the second angle pointer to the corresponding scale value, thereby completing the adjustment of the welding head angle. When debugging based solely on the battery cell position, the welding head angle is adjusted by adaptively rotating the welding head and the first angle adjustment dial. When debugging based on the battery cell model and battery cell position, the welding head and the first angle adjustment dial can be rotated according to the battery cell position, that is, the welding head is first adjusted to a position close to the battery cell through a primary adjustment, and then the welding head and the first angle adjustment dial are adjusted a second time based on the correspondence between the battery cell model and the scale value.

[0147] Furthermore, the welding method shown in this embodiment also includes: obtaining angle information of the collecting plate in the shell on the transport vehicle at the identification station, and determining a compensation angle based on the angle information; and driving the shell and the collecting plate to rotate at the welding station based on the compensation angle.

[0148] After the transport carrier moves the housing and current collecting tray to the welding station, it raises them until the rotating ram contacts the tray, ensuring contact between the tray and the housing. The rotating ram then rotates the tray and housing a certain angle to align the tray, ensuring accurate welding position. The welding mechanism then proceeds. In this embodiment, post-weld visual inspection is performed after the current collecting tray welder station g, and unqualified products are removed from the production line to ensure production quality.

[0149] Furthermore, in this embodiment, as shown in Figures 20 to 26 , a transport vehicle 6h is capable of moving cells to be processed to a cover plate pre-spot welding station h, which includes a rotary conveyor mechanism 1h. The rotary conveyor mechanism 1h includes a turntable 11h. The cover plate pre-spot welding station has a loading position 21h and a welding position 22h, sequentially arranged along the direction of rotation of the turntable 11h. The turntable 11h is provided with multiple cover plate retrieving heads 12h, two of which are respectively provided with a one-to-one correspondence between the loading position 21h and the welding position 22h. The cover plate retrieving heads 12h are configured to cyclically switch between the loading position 21h and the welding position 22h, sequentially along the direction of rotation of the turntable 11h.

[0150] Specifically, the cover plate pre-spot welding station shown in this embodiment, through the rotation of the turntable 11h, the cover plate picking head 12h carries the cover plate and switches between the loading position 21h and the welding position 22h in sequence. At the same time, since the loading position 21h and the welding position 22h each correspond to a cover plate picking head 12h, the loading operation and the welding operation can be carried out simultaneously, that is, after the pre-spot welding is completed, as the turntable 11h rotates, the cover plate loaded by the next cover plate picking head 12h can be immediately rotated to the welding position 22h for the welding mechanism to weld, reducing the waiting time for the cover plate pre-spot welding. Accordingly, the overall beat is more compact, ensuring the efficiency of the pre-spot welding. Among them, the material picking method of the cover plate picking head 12h can be either magnetic adsorption or negative pressure adsorption, which can be flexibly selected according to the material, structure or weight of the cover plate.

[0151] It should be noted that the loading position 21h and the welding position 22h are indicated by arrows in FIG20 , and the loading position 21h and the welding position 22h are indicated by dotted-line boxes in FIG25 .

[0152] As shown in Figures 20 and 21, the cover plate pre-spot welding device shown in this embodiment also includes: a rotary drive mechanism 3h; the rotary drive mechanism 3h is located at the welding position 22h; the rotary drive mechanism 3h is detachably connected to the cover plate picking head 12h located at the welding position 22h, and the cover plate picking head 12h is rotatably connected to the turntable 11h; a plurality of avoidance openings 121h are provided along the circumference of the cover plate picking head 12h, and the avoidance openings are used for allowing laser irradiation to the cover plate in the cover plate picking head 12h. Specifically, after the cover plate picking head 12h rotates to the welding position 22h, the rotating head 31h of the rotary drive mechanism 3h is connected to the cover plate picking head 12h under the drive of the lifting drive member 33h, and the rotary drive member 32h drives the cover plate picking head 12h and the cover plate inside it to rotate at the welding position 22h through the rotary head 31h. At the same time, the avoidance opening 121h on the cover plate picking head 12h can expose the pre-spot welding position on the cover plate, so that the laser emitted by the welding mechanism 4h can be irradiated to the pre-spot welding position. When the cover plate picking head 12h rotates one circle, the pre-spot welding of the cover plate and the battery cell casing is completed.

[0153] As shown in Figures 21 to 22, the cover plate picking head 12h shown in this embodiment includes a receiving groove, a connecting rod 122h and a driven head 123h; the receiving groove is located at the first end of the connecting rod 122h, and the driven head 123h is located at the second end of the connecting rod 122h; the receiving groove is used for the ends of the cover plate and the battery shell to extend into, and the avoidance port 121h is located at the notch of the receiving groove; the rotary drive mechanism 3h is connected to the driven head.

[0154] As shown in FIG21 , the welding position 22h shown in this embodiment is provided with a detection unit 5h, a sensing block 124h is provided on the connecting rod 122h, and a plurality of notches 1241h are provided along the circumference of the sensing block 124h. The plurality of notches 1241h are provided in a one-to-one correspondence with the plurality of avoidance openings 121h. When the cover plate picking head 12h is located at the welding position 22h, the detection end of the detection unit 5h is directed toward the sensing block 124h. The notches 1241h are used for the detection unit 5h to identify and locate the angular position of the cover plate. Specifically, based on the pre-spot welding process, the rotary drive mechanism 3h is equivalent to driving the cover plate picking head 12h to rotate a preset angle each time, thereby rotating the next avoidance opening 121h to the welding mechanism 4h. By detecting the position of the notch 1241h corresponding to the avoidance opening 121h, it is determined whether the avoidance opening 121h has accurately rotated to a position relative to the welding mechanism 4h, thereby ensuring the accuracy of the pre-spot welding position. The sensing block 124h is located in the middle of the cover plate material taking head 12h, and the avoidance port 121h is located at the end of the cover plate material taking head 12h, so that the distance between the notch 1241h and the avoidance port 121h is increased as much as possible, so that the detection positioning of the notch 1241h and the pre-spot welding at the avoidance port 121h do not interfere with each other.

[0155] As shown in Figures 21 and 22, the detection end of the detection unit 5h shown in this embodiment has a second transmitting end and a second receiving end that are arranged opposite each other, and the sensing block 124h is located between the second transmitting end and the second receiving end. The detection unit 5h is in communication with the rotary drive mechanism 3h. When the gap is located between the second transmitting end and the second receiving end, the signal between the second transmitting end and the second receiving end is connected; when the entity part between two adjacent gaps is located between the second transmitting end and the second receiving end, the signal between the second transmitting end and the second receiving end is blocked. Because the sensing block 124h is provided with multiple gaps 1241h along the circumference, there are also multiple entity parts between two adjacent gaps 1241h, that is, the multiple gaps 1241h and the multiple entity parts are arranged alternately along the circumference. During the pre-spot welding process, as the rotary drive mechanism 3h drives the cover plate picking head 12h to rotate, when the entity part rotates to between the second transmitting end and the second receiving end, the entity part blocks the signal sent from the second transmitting end to the second receiving end. At this time, the signal between the second transmitting end and the second receiving end is blocked, thereby indicating that the avoidance opening 121 on the cover plate picking head 12h h has not yet turned to the position corresponding to the welding mechanism 4h, and the rotating drive mechanism 3h is required to drive the cover plate picking head 12h to continue rotating; when the gap 1241h rotates to between the second transmitting end and the second receiving end, at this time, the signal between the second transmitting end and the second receiving end is connected, which indicates that the avoidance opening 121h on the cover plate picking head 12h has turned to the position corresponding to the welding mechanism 4h, and the rotating drive mechanism 3h is required to stop driving the rotation of the cover plate picking head 12h, and then the welding mechanism 4h performs pre-spot welding, and then repeats the above process until a circle of pre-spot welding is completed on the cover plate and the battery shell.

[0156] The detection unit 5h may be a slot-type photoelectric sensor, and the sensing block 124h extends into the slot of the slot-type photoelectric sensor.

[0157] As shown in Figures 22 and 23, the rotary drive mechanism 3h includes a rotary head 31h, a rotary drive member 32h and a lifting drive member 33h; the rotary head 31h is connected to the lifting drive member 33h through the rotary drive member 32h, and the lifting drive member 33h is used to drive the rotary head 31h to move toward the side close to the cover plate picking head 12h or the side away from the cover plate picking head 12h. The rotary head 31h is provided with a fitting surface adapted to the driven head, and the fitting surface can be set as an inclined surface. The fitting surface is used to be detachably connected to the driven head. The contact area between the cover plate picking head 12h and the rotary head 31h is increased by the design of the inclined surface, so that the rotation of the cover plate picking head 12h is driven by the rotation of the rotary head 31h. When the cover plate picking head 12h carries the cover plate to rotate to the welding position 22h, the transport carrier 6h extends one end of the battery cell shell into the accommodating groove of the cover plate picking head 12h, so that the cover plate abuts one end of the battery cell shell, and the lifting drive 33h drives the rotating head 31h to descend until the rotating head 31h abuts against the driven head. At this time, the fitting surface is fitted and connected with the driven head, and then the rotating drive 32h drives the rotating head 31h to rotate, thereby driving the cover plate picking head 12h, the cover plate and the battery cell shell to rotate synchronously in turn, so as to cooperate with the welding mechanism 4h to pre-spot weld the edge of the cover plate and the edge of the battery cell shell; after the pre-spot welding is completed, the transport carrier 6h unloads the battery cell shell and the cover plate, and the lifting drive 33h drives the rotating head 31h to rise, so that the rotating head 31h is separated from the cover plate picking head 12h, so that the turntable 11h continues to rotate toward the next workstation.

[0158] The cover plate pre-spot welding station h shown in this embodiment also includes a post-weld inspection mechanism. The post-weld inspection mechanism is located at the welding position 22h. After the cover plate and the battery cell are welded and unloaded, the post-weld inspection mechanism is used to confirm that the cover plate removal head 12h located at the welding position 22h is empty.

[0159] Specifically, after the pre-spot welding is completed, the cover plate and the battery cell are equivalent to a whole. After being unloaded by the transport carrier for 6 hours, the cover plate leaves the cover plate picking head for 12 hours. The post-weld detection mechanism is used to detect whether there is a cover plate in the cover plate picking head 12 hours, so as to determine whether the cover plate is unloaded with the battery cell or whether it is still left in the cover plate picking head 12 hours, and thus indirectly judge the quality of the pre-spot welding.

[0160] In some embodiments, the post-weld detection mechanism shown in this embodiment has a first transmitting end and a first receiving end arranged in an upper and lower relative manner at the welding position 22h. The first transmitting end is located above the receiving slot, and the first receiving end is located below the receiving slot, that is, the receiving slot is located between the first transmitting end and the first receiving end; the cover plate picking head 12h in the welding position is located between the first transmitting end and the first receiving end; the cover plate picking head 12h is provided with a through hole for signal communication between the first transmitting end and the first receiving end. When a cover plate is present on the cover plate picking head 12h, the cover plate covers the through hole. Specifically, after the cover plate is normally discharged along with the battery cell, the signal emitted by the first transmitting end is received by the first receiving end through the through hole, thereby determining that there is no cover plate in the cover plate picking head 12h; when the cover plate is left in the cover plate picking head 12h, the cover plate blocks the through hole, that is, the signal emitted by the first transmitting end is blocked and cannot be received by the first receiving end, which can determine that the cover plate was not normally discharged along with the battery cell. Among them, the post-weld detection mechanism can be a through-beam optical fiber.

[0161] As shown in Figures 24 and 25, the cover plate pre-spot welding device shown in this embodiment also includes a pre-weld detection mechanism 7h. The pre-weld detection mechanism 7h is located at the pre-weld detection position 23h, which is located between the loading position 21h and the welding position 22h along the rotation direction of the turntable 11h. The cover plate picking head 12h is used to cyclically switch between the loading position 21h, the pre-weld detection position 23h, and the welding position 22h along the rotation direction of the turntable 11h. The pre-weld detection mechanism 7h is used to determine whether a cover plate has been picked up by the cover plate picking head 12h located at the pre-weld detection position 23h.

[0162] Specifically, due to the phenomenon that the cover plate picking head 12h fails to load the material normally at the loading position, or the cover plate falls during the rotation of the turntable 11h, the presence of the cover plate in the cover plate picking head 12h is detected before the pre-spot welding. If no cover plate is detected, the vacant cover plate picking head 12h does not perform the welding operation after rotating to the welding position 22h. If a cover plate is detected, normal welding is performed at the welding position 22h. Among them, the pre-welding detection mechanism 7h has the same structure as the post-welding detection mechanism and can also be a through-beam optical fiber. The pre-welding detection position 23h is indicated by a dotted box in Figure 22.

[0163] As shown in Figures 24 and 25, the cover plate pre-spot welding device shown in this embodiment also includes a feeding mechanism 8h. The feeding mechanism 8h includes a cover plate positioning assembly 81h, and one of the multiple cover plate positioning assemblies 81h is used to move to the feeding position for the cover plate picking head 12h to pick up materials. Specifically, the loading is carried out by multiple cover plate positioning assemblies 81h, which ensures the efficiency of loading. When one of the cover plate positioning assemblies 81h is used to pick up materials for the cover plate picking head 12h, a portion of the cover plate positioning assemblies 81h with the cover plates stored is in a cache state, and the other portion of the empty cover plate positioning assemblies 81h is replenished by the replenishing mechanism, so as to realize the cycle of replenishing, caching and loading, thereby ensuring the efficiency of loading.

[0164] In some embodiments, as shown in FIG26 , each cover plate positioning assembly 81h shown in this embodiment is provided with a corresponding loading detection assembly, which is used to determine whether a cover plate is placed on the cover plate positioning assembly 81h and / or to determine whether the cover plate on the cover plate positioning assembly 81h is facing forward or backward. The loading detection assembly includes a fiber optic sensor 82h and / or a proximity switch 83h. The fiber optic sensor 82h faces the positioning slot of the cover plate positioning assembly to determine whether a cover plate is present in the positioning slot. The proximity switch 83h is located at the bottom of the positioning slot. When the cover plate is placed forward, the proximity switch detects that the distance between the proximity switch and the cover plate is 0. When the cover plate is placed backward, the proximity switch detects that the distance between the proximity switch and the cover plate is greater than 0, thereby determining that the cover plate is placed backward.

[0165] Furthermore, in this embodiment, as shown in Figures 27 to 29, a transport vehicle 111i is capable of moving the battery cells to be processed to the cover plate sealing welding station i. The cover plate sealing welding station i includes a carrying assembly 11i, a welding assembly 12i, an air blowing assembly 13i, and a dust removal assembly 14i. As shown in Figure 27, the carrying assembly 11i includes a rotating pressing component 112i. The transport vehicle 111i is capable of moving the battery cells to be processed below the rotating pressing component 112i, which is used to press the cover plate against the end of the battery housing.

[0166] The welding assembly 12i is installed on one side of the supporting assembly 11i for laser sealing the cover plate and the shell; the blowing assembly 13i includes a first blowing component (not shown in the figure) and a second blowing component 131i. The first blowing component is installed on the welding gun head 121i of the welding assembly 12i and blows air in a first direction. The second blowing component 131i is provided on one side of the welding gun head 121i and blows air in a second direction; the dust removal assembly 14i is installed on the rotating pressing component 112i to remove dust from the welding position. In this embodiment, the transport carrier 111i and the rotating pressing component 112i can respectively press and fix the battery shell and the cover plate from both ends, so that the battery shell and the cover plate are kept in the position to be welded, so that the welding component 12i installed on one side of the carrying component 11i can laser seal the battery shell and the cover plate; after the battery shell and the cover plate are pressed, the rotating pressing component 112i can also rotate to drive the battery shell and the cover plate to rotate axially, so that the welding component 12i can seal the welding position of the battery shell and the cover plate around, completing the sealing between the cover plate and the battery shell without rotating the welding component 12i , which is beneficial to reducing the size of the entire cover sealing welding station i; at the same time, the first blowing component installed on the welding gun head 121i and the second blowing component 131i arranged on one side of the welding gun head 121i can blow shielding gas to the welding position from the first direction and the second direction respectively, so that the shielding gas can better cover the welding position, which is beneficial to improving the welding effect; the dust removal component 14i is installed on the rotating pressing component 112i to axially exhaust dust from the welding position, and the direction of the dust removal airflow forms a certain angle with the blowing direction of the shielding gas, which is beneficial to reduce the mutual influence between the dust removal airflow and the shielding gas, and the dust removal effect is better.

[0167] The cover plate sealing welding station i of the present application presses and fixes the battery shell and the cover plate from both ends through the supporting component 11i, and drives the battery shell and the cover plate to rotate axially through the rotating pressing component 112i, so that the welding component 12i arranged on one side of the supporting component 11i can be sealed around the welding position of the battery shell and the cover plate, and there is no need for the welding component 12i to rotate around the battery shell and the cover plate, so that the cover plate sealing welding station i has a more compact structure and a smaller size; at the same time, the first blowing component and the second blowing component 131i are used to blow the protective gas to the welding position in different directions, so that the protective gas can better cover the welding position, which is beneficial to improving the welding effect; the dust removal component 14i is installed on the rotating pressing component 112i to axially exhaust and dust the welding position, and the direction of the dust removal airflow is at a certain angle to the blowing direction of the protective gas, which is beneficial to reducing the mutual influence between the dust removal airflow and the protective gas, and effectively solves the problem in the prior art that when the battery shell and the cover plate are sealed, the dust removal airflow and the protective gas are in opposite directions and influence each other, resulting in poor dust removal effect. Specifically, as shown in FIG. 27 , the first direction is generally parallel to the welding gun head 121 i , and the second direction is generally at an angle to the first direction.

[0168] In some embodiments, the first air blowing component includes a first blow gun (not shown), which is mounted on the welding gun head 121i, with the blowing end of the first blow gun positioned parallel to the welding gun head 121i. In this embodiment, the first blow gun is mounted on the welding gun head 121i so that the blowing direction is parallel to the direction of the laser beam of the welding gun head 121i, and the shielding gas is coaxially blown to the welding position, which is beneficial for improving the weld quality.

[0169] In some embodiments, as shown in FIG28 , the second blowing component 131i includes a second blow gun 1311i and a connecting rod 1312i. The second blow gun 1311i is movably disposed on one side of the welding gun head 121i through the connecting rod 1312i. The second blow gun 1311i is disposed at an angle to the welding position.

[0170] In this embodiment, by arranging the second blow gun 1311i on one side of the welding gun head 121i so that the second blow gun 1311i forms a certain angle with the welding position, the second blow gun 1311i can blow the welding position from the side, so that the shielding gas can provide side-axis protection to the welding position, and cooperate with the first blow gun so that the shielding gas can better cover the welding position, thereby achieving better welding effect; at the same time, the second blow gun 1311i can adjust the position and angle through the connecting rod 1312i, so that the blowing angle of the second blow gun 1311i can be adjusted according to the actual needs of welding, with a simple structure, which is conducive to improving welding quality. Specifically, in some embodiments, as shown in Figure 28, the transport vehicle 111i includes a base 1111i, a rotating support cup 1112i, a fixed component 1113i, a movable component 1114i and a lifting cylinder 1115i; the base 1111i is provided with a lifting cylinder 1115i, the movable component 1114i is movably arranged on the fixed component 1113i in the vertical direction, the movable component 1114i is arranged on the top of the lifting cylinder 1115i, the driving end of the lifting cylinder 1115i is in contact with the movable component 1114i, the rotating support cup 1112i is rotatably arranged on the movable component 1114i, the rotating support cup 1112i is coaxially arranged with the rotating pressing component 112i, and the lifting cylinder 1115i is used to drive the movable component 1114i to move in the vertical direction.

[0171] In this embodiment, the base 1111i is used to support and fix the lifting cylinder 1115i, and the fixing part 1113i is used to support the movable part 1114i; the driving end of the lifting cylinder 1115i abuts the movable part 1114i, and the lifting cylinder 1115i can drive the driving end to move up and down, and then cooperate with gravity to drive the movable part 1114i to move up and down; by rotatably providing a rotating support cup 1112i on the movable part 1114i, the battery housing and the cover are supported, and the battery The shell and cover plate can be raised and lowered with the moving sub-component 1114i, so that the rotating support cup 1112i can cooperate with the rotating pressing component 112i to press or loosen the battery shell and cover plate; after the battery shell and cover plate are pressed by the rotating support cup 1112i and the rotating pressing component 112i, the rotating pressing component 112 rotates to drive the battery shell, cover plate and rotating support cup 1112i to rotate synchronously, so that the welding gun head 121i surrounds the welding position of the battery shell and cover plate for sealing. The structure is simple and practical.

[0172] In some embodiments, the transport vehicle 111i also includes a splint cylinder 1116i and two splints 1117i arranged opposite to each other; the two splints 1117i are both connected to the movable component 1114i, and the two splints 1117i are respectively located on both sides of the battery shell, and the splint cylinder 1116i is arranged between the two splints 1117i, and the splint cylinder 1116i is used to drive at least one of the splints 1117i to move.

[0173] In this embodiment, by connecting two clamps 1117i to the movable component 1114i, the two clamps 1117i clamp the battery shell from both sides, which can limit the battery shell in the horizontal direction, avoid horizontal shaking of the battery shell, and make the battery shell more stable during the welding process, which is beneficial to improving the welding quality; by arranging a clamp cylinder 1116i between the two clamps 1117i to drive at least one clamp 1117i to move, thereby adjusting the distance between the two clamps 1117i, so that the two clamps 1117i clamp or loosen the battery shell, making it convenient to place the battery shell on the rotating cup 1112i or remove it from the rotating cup 1112i, and also enabling the two clamps 1117i to adapt to clamp battery shells of different sizes. In a specific embodiment, as shown in FIG26 , rollers are provided on each of the splints 1117i, and the rotation axis of the rollers is parallel to the rotation axis of the battery casing. The two splints 1117i clamp the battery casing from both sides through the rollers. When the battery casing rotates, there is rolling friction between the rollers and the battery casing, and the friction force is small, so the battery casing rotates more smoothly, and the wear on the battery casing can be effectively reduced.

[0174] In some embodiments, as shown in FIG27 , the rotary pressing component 112i includes a first driving member 1121i and a rotary pressing head 1122i; the first driving member 1121i is in transmission connection with the rotary pressing head 1122i, and the rotary pressing head 1122i is rotatably abutted against the cover plate, and a clamping space for the cover plate and the battery housing is formed between the rotary pressing head 1122i and the transport vehicle 111i. In this embodiment, the rotary pressing head 1122i and the transport vehicle 111i clamp and fix the battery housing and the cover plate from both ends; the first driving member 1121i is used to drive the rotary pressing head 1122i to rotate, thereby driving the battery housing and the cover plate to rotate, so that the welding gun head 121i surrounds the battery housing and the cover plate to complete the sealing of the welding position. The first driving member 1121i can be a motor.

[0175] In some embodiments, as shown in Figure 28, the dust removal assembly 14i includes a dust hood 141i, a dust extraction pipe (not shown in the figure) and a dust extractor (not shown in the figure); the dust hood 141i is arranged between the rotating pressure head 1122i and the transport vehicle 111i, and a welding chamber is constructed in the dust hood 141i. The rotating pressure head 1122i is rotatably arranged in the welding chamber. The dust hood 141i is provided with a dust extraction port 1411i connected to the welding chamber, and the dust collector is connected to the dust extraction port 1411i through the dust extraction pipe. In this embodiment, the rotary pressing head 1122i is rotatably arranged in the welding chamber, and when the rotary pressing head 1122i presses the cover plate and the battery shell, the dust removal cover 141i is arranged at the welding position of the cover plate and the battery shell, and the dust collector exhausts dust in the welding chamber through the dust extraction pipe and the dust extraction port 1411i to avoid welding slag and dust from splashing and affecting the welding effect; the dust removal cover 141i is arranged at the welding position of the cover plate and the battery shell, which can not only prevent external dust and dirt from approaching the welding position and affecting the welding quality, but also effectively improve the dust extraction effect.

[0176] Specifically, in some embodiments, as shown in Figure 28, the dust removal cover 141i includes an upper cover body 1412i and a lower cover body 1413i that are connected to each other; the top surface of the upper cover body 1412i is provided with a dust extraction port 1411i and a mounting hole 1414i for mounting a rotary pressure head 1122i, and the rotary pressure head 1122i is rotatably set in the mounting hole 1414i, and the lower cover body 1413i extends axially along the upper cover body 1412i, and the lower cover body 1413i covers the welding position of the cover plate and the battery shell, and the side of the lower cover body 1413i is provided with a welding notch 1415i for the welding gun head 121i to perform sealing welding.

[0177] In this embodiment, by rotatably positioning the rotary ram 1122i within the mounting hole 1414i, the dust cover 141i remains stationary as the rotary ram 1122i drives the battery housing and cover plate to rotate, ensuring that the welding notch 1415i remains in the same position, always corresponding to the welding gun head 121i, allowing the welding gun head 121i to perform tuyere welding. The upper cover 1412i and the lower cover 1413i surround the welding position between the cover plate and the battery housing to form a welding chamber, allowing the dust collector to extract dust from the welding position between the cover plate and the battery housing via the dust extraction pipe and the dust extraction port 1411i. This results in a simple structure and effective dust extraction. Furthermore, by providing the welding notch 1415i within the lower cover 1413i, welding slag can be easily extracted, preventing it from falling into the dust cover 141i and causing wear on the battery cells. As shown in Figure 29, there are multiple dust extraction ports 1411i, and the multiple dust extraction ports 1411i are evenly arranged on the upper cover body 1412i. The opening direction of each dust extraction port 1411i is at a certain angle to the axial and circumferential directions of the upper cover body 1412i, and is obliquely downward toward the welding position of the cover plate and the battery shell. When the dust collector extracts dust from the welding cavity through the multiple dust extraction ports 1411i, it can form a vortex around the welding position of the cover plate and the battery shell, and the dust removal effect is better.

[0178] In some embodiments, a welding visual inspection component is further included. The welding visual inspection component is used to detect the welding condition of the welding position and is electrically connected to the welding assembly 12i, the air blowing assembly 13i, the rotating and pressing component 112i, and the dust removal assembly 14i. In this embodiment, the welding visual inspection component is set to detect the welding condition of the welding position. When it is detected that welding is complete or an abnormality occurs in the welding position (such as poor welding quality, incorrect welding, missing welding, etc.), the visual inspection component controls the welding assembly 12i, the air blowing assembly 13i, the rotating and pressing component 112i, and the dust removal assembly 14i to stop, so that the operator can remove the battery cell or inspect and maintain the entire mechanism.

[0179] In some embodiments, as shown in FIG27 , the welding assembly 12i includes a welding gun head 121i and a second driver 122i. The driving end of the second driver 122i is connected to the welding gun head 121i, and the second driver 122i is used to drive the welding gun head 121i toward or away from the welding position. In this embodiment, the second driver 122i is provided to adjust the position of the welding gun head 121i, thereby adjusting the distance between the welding gun head 121i and the welding position, so that the welding gun head 121i is positioned optimally, which is beneficial for improving welding quality. Furthermore, the welding gun head 121i can be adapted to seal battery casings and cover plates of different sizes. When the cover plate sealing welding station i needs to be disassembled and repaired, the welding gun head 121i can be moved away from the support assembly 11i and the dust removal assembly 14i, leaving space for personnel to operate.

[0180] The base 1111i of the transport vehicle 111i is movably connected to the transport track, the lifting cylinder 1115i is connected to the base 1111i, and the fixed component 1113i is fixedly arranged above the base 1111i; the movable component 1114i is movably connected to the fixed component 1113i in the vertical direction and abuts against the top of the movable end of the lifting cylinder 1115i; a rotating support cup 1112i is rotatably arranged above the movable component 1114i.

[0181] The rotary pressing component 112i includes a first driving member 1121i and a rotary pressing head 1122i which is transmission-connected to the output end of the first driving member 1121i; the rotary pressing head 1122i is arranged directly above the rotary support cup 1112i and is coaxially arranged with the rotary support cup 1112i; the dust removal cover 141i of the dust removal assembly 14i is provided with a mounting hole 1414i, and the rotary pressing head 1122i is rotatably inserted into the mounting hole 1414i. When the cylindrical battery cell is subjected to tuyere welding, The cover plate is pressed against the top of the battery shell by the rotating pressure head 1122i, and the battery cell on the rotating support cup 1112i is driven to rotate synchronously. Preferably, the rotating pressure head 1122i is an active power source, and the rotating support cup 1112i is driven to rotate. When the rotating pressure head synchronously drives the battery cell to rotate, the dust cover 141i remains stationary, and a dust extraction port 1411i is provided on the top of the dust collection port 141i, which is connected to the dust collector (not shown in the figure) through a dust extraction pipe (not shown in the figure). The welding gun head 121i and the second driving member 122i of the welding assembly 12i are located on one side of the supporting assembly 11i, the welding gun head 121i is aligned with the welding position, and the dust removal cover 141i is provided with a welding notch 1415i corresponding to the position of the welding gun head 121i for the welding gun head 121i to perform welding; the first blow gun (not shown in the figure) of the blowing assembly 13 is arranged parallel to the welding gun head 121i, and is used for coaxially blowing the protective gas; the second blow gun 1311i is located on the side of the welding gun head 121i, tilted at a certain angle to the welding position, and is used for side-by-side blowing of the protective gas, and cooperates with the first blow gun to better cover the welding position with the protective gas, which is beneficial to improving the welding quality.

[0182] The working principle of the cover plate sealing welding station i based on the above embodiment is as follows:

[0183] The battery shell and cover plate are placed on the rotating support cup 1112i, and the lifting cylinder 1115i drives the movable end to push the movable sub-component 1114i upward, thereby driving the rotating support cup 1112i, the battery shell and the cover plate to rise, so that the rotating pressure head 1122i presses the battery shell and the cover plate, so that the battery shell and the cover plate are located in the welding position, and the battery shell and the cover plate are extended into the dust removal cover 141i; the rotating pressure head 1122i rotates under the drive of the first driving member 1121i, and drives the battery shell, the cover plate and the rotating support cup 1112i to rotate synchronously; at the same time, the welding gun head 121i welds the welding position of the battery shell and the cover plate through the welding notch 1415i, and the first blow gun blows the protective gas coaxially; the second blow gun 1311i blows the protective gas sideways; the dust collector sucks and removes dust from the welding chamber in the dust removal cover 141i through the dust extraction pipe and the dust extraction port 1411i.

[0184] Similarly, in this embodiment, after the cover plate is welded to the battery cell, a post-weld visual inspection is also required, and unqualified products are removed from the production line to ensure production quality.

[0185] Furthermore, the battery cell unloading station j in this embodiment includes: an unloading transmission mechanism and an unloading clamping mechanism. The unloading transmission mechanism is used to transmit battery cells, and the unloading clamping mechanism is used to transfer battery cells that have passed the inspection from the cover sealing welding station to the unloading transmission mechanism.

Claims

1. An intelligent production line for cylindrical battery cells, comprising a battery cell loading station, a positive current collector welding station, a positive encapsulation station, a battery cell casing loading station, a positive terminal welding station, a negative current collector welding station, a side welding station for the current collector, a cover pre-spot welding station, a cover sealing welding station, a battery cell unloading station, and a battery cell transfer mechanism arranged in sequence along the processing direction. Among them, the battery cell loading station is used to receive battery cells; the positive current collector welding station is used to receive a positive current collector and a battery cell from the battery cell loading station, and weld the positive current collector to the positive electrode of the battery cell; the positive encapsulation station is used to receive the battery cell from the positive current collector welding station, and perform encapsulation treatment on the positive electrode of the battery cell where the positive current collector is welded; the battery cell casing loading station is used to receive a battery casing and the battery cell from the positive encapsulation station, and install the battery cell into the battery casing; the positive terminal welding station is used to receive the battery cell from the battery cell casing loading station, and position and correct the battery casing to make the battery cell concentric with the positive terminal of the battery casing; the negative current collector welding station is used to receive a negative current collector and the battery cell from the positive terminal welding station, and weld the negative current collector to the negative electrode of the battery cell; the side welding station for the current collector is used to receive the battery cell from the negative current collector welding station, and weld the negative current collector to the battery casing; the cover pre-spot welding station is used to receive a cover and the battery cell from the side welding station for the current collector, and pre-weld the cover to the negative electrode of the battery cell; the cover sealing welding station is used to receive the battery cell from the cover pre-spot welding station, and seal-weld the cover to the battery casing; the battery cell unloading station is used to receive the battery cell from the cover sealing welding station, and unload the battery cell.

2. The intelligent production line for cylindrical battery cells according to claim 1, wherein, The battery cell loading station includes: a loading transfer mechanism, a polarity alignment mechanism, and a loading clamping mechanism. The loading transfer mechanism is used to transfer battery cells. The loading clamping mechanism is used to transfer the battery cells on the loading transfer mechanism to the battery cell transfer mechanism. The polarity alignment mechanism is used to detect the polarity state of the battery cells on the battery cell transfer mechanism.

3. The intelligent production line for cylindrical battery cells according to claim 1, wherein, The positive current collector welding station includes: a conveying mechanism and a material taking mechanism; The conveying mechanism includes a first current collector positioning component and a second current collector positioning component arranged at intervals along the conveying direction; The positive current collector welding station sequentially has a first loading position, a material taking position, and a second loading position along the conveying direction. The material taking mechanism is located at the material taking position; The first current collector positioning component can be switched between the first loading position and the material taking position, and the second current collector positioning component can be switched between the second loading position and the material taking position; The first current collector positioning component and the second current collector positioning component can respectively receive positive current collectors at the first loading position and the second loading position. The material taking mechanism can grab the positive current collector at the material taking position.

4. The intelligent production line for cylindrical battery cells according to claim 3, wherein, The material taking mechanism includes a material taking turntable. The material taking position, the detection position, and the welding position are arranged in sequence along the rotation direction of the material taking turntable. A plurality of material taking pressing heads are provided on the material taking turntable, and the number of the material taking pressing heads is greater than or equal to 3. Among the plurality of material taking pressing heads, three of them are respectively arranged in one-to-one correspondence with the material taking position, the detection position, and the welding position; the material taking pressing heads are used to cyclically switch between the material taking position, the detection position, and the welding position in sequence along the rotation direction of the material taking turntable; The transport carrier can move the battery cell to be processed to the welding position; The positive current collector welding station further includes a laser welding mechanism, and the laser welding mechanism is used to weld the positive current collector to the battery cell at the welding position.

5. The intelligent production line for cylindrical electric cores according to claim 1, wherein, The battery cell casing loading station has a casing loading position. The transport carrier can move the battery cell to be processed to the casing loading position. The battery cell casing loading station includes: A dust removal mechanism, and the dust removal mechanism has a cleaning position for dust removal on the inner wall of the battery case; A battery cell transfer mechanism, and the battery cell transfer mechanism is used to transfer the battery cell on the battery cell transmission mechanism to the casing loading position; A transfer mechanism, which is used to receive the battery case and transfer the battery case to the cleaning position, and is also used to transfer the battery case at the cleaning position to the casing loading position; A casing loading mechanism, the casing loading mechanism includes a transfer component and a casing loading component. The casing loading component includes a driving part and a pressing head part. The driving part is installed on the transfer component, and the pressing head part is used to pick up the battery case. The pressing head part is installed on the driving part so that the battery cell is loaded into the battery case.

6. The intelligent production line for cylindrical battery cells according to claim 1, wherein, The positive electrode post welding station has a correction position. The transport carrier can move the battery cell to be processed to the correction position. The positive electrode post welding station includes: A column; A driving mechanism, installed on the column; A correction mechanism, the correction mechanism includes a positioning component and a correction component. The positioning component is installed at the output end of the driving mechanism, and the correction component is installed on the positioning component. In the state where the transport carrier reaches the correction position, the correction mechanism is coaxially arranged with the transport carrier.

7. The intelligent production line for cylindrical battery cells according to claim 1, wherein, The current collector side welding station includes: A side welding mechanism, the side welding mechanism includes a bracket, a welding head, and an angle adjustment group Part; the angle adjustment component includes a first angle adjustment disc and a second angle adjustment disc. The first angle adjustment disc is rotatably arranged on the bracket in a first plane, the second angle adjustment disc is connected to the first angle adjustment disc, and the welding head is rotatably arranged on the second angle adjustment disc in a second plane.

8. The intelligent production line for cylindrical battery cells according to claim 1, wherein, The cover plate pre-spot welding station includes: A rotary conveying mechanism, the rotary conveying mechanism includes a turntable. The cover plate pre-spot welding device sequentially has a loading position and a welding position along the rotation direction of the turntable; a plurality of cover plate material taking heads are provided on the turntable, and two of the plurality of cover plate material taking heads are respectively arranged in one-to-one correspondence with the loading position and the welding position; The cover plate material taking head is used to cyclically switch between the loading position and the welding position in sequence along the rotation direction of the turntable.

9. The intelligent production line for cylindrical battery cells according to claim 1, wherein, The cover plate sealing welding station includes: The bearing assembly includes a rotary pressing member. The transport vehicle can move the battery cell to be processed below the rotary pressing member, and the rotary pressing member is used to press the cover plate against the end of the battery case. The welding assembly is installed on one side of the bearing assembly for laser sealing the cover plate and the battery case. The air blowing assembly includes a first air blowing member and a second air blowing member. The first air blowing member is installed on the welding gun head of the welding assembly to blow air along a first direction, and the second air blowing member is arranged on one side of the welding gun head to blow air along a second direction. The dust removal assembly is installed on the rotary pressing member to remove dust from the welding position.

10. The intelligent production line for cylindrical battery cells according to claim 1, wherein, The battery cell blanking station includes: a blanking transmission mechanism and a blanking clamping mechanism. The blanking transmission mechanism is used to transmit the battery cells, and the blanking clamping mechanism is used to transfer the battery cells from the cover plate sealing and welding station to the blanking transmission mechanism.

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