Battery cell assembly production line and automatic production system

Abstract

The utility model relates to the technical field of battery automatic production equipment, in particular to a battery cell assembly production line and an automatic production system.The battery cell assembly production line comprises a production loop line, and the production loop line comprises a magnetic suspension transportation loop line and processing equipment arranged along the magnetic suspension transportation loop line. The magnetic induction line body comprises a first conveying part, a second conveying part and a longitudinal conveying part, the second conveying part is higher than the first conveying part, and the two ends of the first conveying part are connected with the two ends of the second conveying part through the longitudinal conveying part so that the first conveying part, the second conveying part and the longitudinal conveying part can define a closed conveying line. A feeding channel capable of entering a space defined by the closed conveying line is formed in the position, located below the second conveying part, of the closed conveying line. According to the battery cell assembly production line and the automatic production system provided by the invention, the transmission efficiency between the stations and the space utilization rate of the loop line are improved, the feeding and discharging of the stations are facilitated, and the feeding and discharging path is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of battery automated production equipment, and in particular to a battery cell assembly production line and an automated production system. Background Art

[0002] With the rapid development of electronic equipment, the market demand for square shell blade batteries has increased dramatically. Most of the high-speed production lines in the industry achieve high production capacity by stacking more workstations. At the same time, the transfer of products between workstations has become a bottleneck of the equipment. At the same time, the equipment occupies a large area, and there are many workstations and they are densely distributed, making maintenance and inspection inconvenient. How to solve the above technical problems to improve the production capacity of square shell blade battery production lines has become an urgent problem to be solved in this field.

[0003] Moreover, the current square shell blade battery production line has many assembly steps, which makes the production line process distance long, making the reflow of assembly jigs difficult. Today's jig reflow usually includes two methods. One method is the double-layer conveyor line method, that is, a jig reflow line with the same length as the production conveyor line is arranged on the upper / lower layer of the production conveyor line, and the jig is circulated at the ends of the production conveyor line and the jig reflow line through lifting equipment or manipulators. However, in this method, the jig reflow path is long and the probability of failure during the reflow process is high; the other method is the loop line transmission method, that is, the production conveyor line and the jig reflow line are enclosed to form a closed-loop conveyor line. In this way, the jig reflow line transmission distance can be greatly shortened, but the closed-loop conveyor line occupies a large space, and each workstation of the production conveyor line needs to bypass the closed-loop conveyor line for loading and unloading, which affects production efficiency. Utility Model Content

[0004] The purpose of the present application is to provide a battery cell assembly production line and an automated production system, so as to solve, to a certain extent, the technical problems existing in the prior art that the production capacity of the square shell blade battery production line needs to be improved urgently, the jig is transported by means of a double-layer conveyor line, the jig reflow path is long, and the probability of failure during the reflow process is high, and the jig is transported by means of a loop line, the closed-loop conveyor line occupies a large space, and the loading and unloading of materials at each workstation of the production conveyor line needs to bypass the closed-loop conveyor line, which affects the production efficiency.

[0005] According to a first aspect of the present application, there is provided a battery cell assembly production line, comprising a production loop line, wherein the production loop line comprises a magnetic levitation transport loop line and processing equipment arranged along the magnetic levitation transport loop line;

[0006] The magnetic suspension transport loop includes a magnetic induction line and a mover, and the mover can move along the magnetic induction line under the magnetic induction of the magnetic induction line;

[0007] The magnetic induction line body includes a first conveying part, a second conveying part and a longitudinal conveying part. The second conveying part is set at a height higher than the first conveying part. Both ends of the first conveying part are respectively connected to both ends of the second conveying part via the longitudinal conveying part, so that the first conveying part, the second conveying part and the longitudinal conveying part are surrounded to form a closed conveying line, and the position of the closed conveying line located below the second conveying part forms a loading channel inside the space enclosed by the closed conveying line.

[0008] Preferably, the battery cell assembly line comprises:

[0009] A plurality of the production loops, wherein the plurality of the production loops are arranged in sequence along a first direction;

[0010] A plurality of grabbing devices are provided between two adjacent production loops to grab the product of one of the two adjacent production loops located upstream to the other one located upstream.

[0011] Preferably, the magnetic induction line body comprises a first conveying line segment, a loading line segment, a second conveying line segment and a unloading line segment which are sequentially arranged along the conveying direction of the magnetic induction line body;

[0012] A loading line segment and a unloading line segment are both arranged on two sides of the closed conveyor line in the first direction, and both the loading line segment and the unloading line segment extend along the second direction;

[0013] The second conveying portion is disposed on the first conveying line segment and / or the second conveying line segment. The first conveying line segment, the second conveying line segment and the second conveying portion all extend along the first direction. The second direction intersects the first direction.

[0014] Preferably, the production loop line comprises:

[0015] The defective product outflow part includes a defective product gripper and a defective product temporary storage warehouse, wherein the defective product gripper can grab the defective products on the mover and put them into the defective product temporary storage warehouse;

[0016] A mover maintenance part, comprising a mover gripper and a mover maintenance station, wherein the mover maintenance station is arranged on one side of the magnetic induction line body, and the mover gripper can grab the mover that needs maintenance and put it into the mover maintenance station;

[0017] A jig dust removal unit is provided on the magnetic induction line body, and the jig dust removal unit is provided upstream of the feeding station to remove dust from the refluxed unloaded mover.

[0018] Preferably, the battery cell assembly production line further includes:

[0019] The four production loops are defined as a first loop, a second loop, a third loop and a fourth loop respectively according to the order in which they participate in production;

[0020] and / or,

[0021] The incoming material conveyor line is used to convey the bare battery cells to be processed to the loading station of the first loop line.

[0022] Preferably, the first loop line comprises:

[0023] The tab shaping unit comprises a first flattening device for flattening the tab and a cutting device for cutting the tab;

[0024] The pre-welding unit is arranged downstream of the tab shaping unit, and includes a first polarity cover plate feeding device and a cover plate pre-welding device. The first polarity cover plate feeding device is used to place the first polarity cover plate on the corresponding mover, and the cover plate pre-welding device is used to weld the first polarity cover plate to the first polarity tab of the battery cell to be processed.

[0025] Preferably, the second loop line comprises:

[0026] The Mylar film side plate feeding unit, the second loop line is also provided with a feeding station, the Mylar film side plate feeding unit is arranged upstream of the feeding station of the second loop line, and is used to hot-melt fix the Mylar film and the side plate, and put the combination of the Mylar film and the side plate that has been hot-melt fixed into the corresponding mover;

[0027] The coating unit is arranged downstream of the loading station of the second loop line, and is used for coating the combination on the battery cell to be processed.

[0028] Preferably, the third loop line includes:

[0029] A material loading unit, used for loading the battery housing onto the mover of the magnetic induction line of the third loop line;

[0030] A shell-piercing machine group is arranged between the second loop line and the third loop line. The products of the second loop line are assembled with the battery shell through the shell-piercing machine group and loaded on the mover of the third loop line.

[0031] A first polarity press-fit welding unit is used to spot-weld and fix the cover plate on the first polarity side of the battery cell to be processed to the battery housing;

[0032] The second polarity cover plate assembly unit is used to assemble the second polarity cover plate on the side where the second polarity pole ear of the battery cell to be processed is located.

[0033] Preferably, the fourth loop line includes:

[0034] A second polarity cover plate welding unit, used for welding and fixing the second polarity cover plate to the battery housing;

[0035] The first polarity cover plate welding unit seals the connection gap between the first polarity cover plate and the battery shell by welding.

[0036] According to the second aspect of the present application, an automated production system is provided, comprising a battery cell assembly production line as described in any of the above technical solutions, and thus having all the beneficial technical effects of the battery cell assembly production line, which will not be described in detail herein.

[0037] Compared with the prior art, the beneficial effects of this application are:

[0038] The battery cell assembly production line provided by the present application, on the one hand, replaces the traditional conveyor belt transmission with the transmission method of the magnetic levitation transport loop line, and integrates the transportation and processing of the assembly line mover fixtures, and utilizes the high flexibility, intelligence, modularity, high speed, high acceleration and other characteristics of the magnetic levitation system to effectively improve the transmission efficiency between the various stations of the battery assembly line; on the other hand, by setting the second conveying part to be higher than the first conveying part, and making the two ends of the first conveying part connected to the two ends of the second conveying part via the longitudinal conveying part, so that the first conveying part, the second conveying part and the longitudinal conveying part are surrounded to form a closed conveying line, and the position of the closed conveying line below the second conveying part forms a closed conveying line that can enter The loading channel inside the space enclosed by the closed conveyor line, so that after the mover passes the battery cells to be processed through the processing equipment in turn, the mover can be transported back to the initial position again via the closed conveyor line to realize the circulation of the mover. Compared with the existing double-layer conveyor line transmission method, the distance of the mover's reflux transmission is greatly shortened, which effectively reduces the failure rate of the mover's reflux, and through the above-mentioned loading channel, it is convenient for personnel / materials to enter the interior of the space enclosed by the closed conveyor line, which can not only utilize the internal storage materials of the space enclosed by the closed conveyor line to improve the space utilization rate of the battery cell pre-welding production loop line (hereinafter referred to as the loop line), but also facilitate loading and unloading of each workstation and shorten the loading and unloading path.

[0039] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A schematic diagram of the structure of a battery cell assembly production line provided in an embodiment of the present application;

[0042] Figure 2 A schematic diagram of the structure of the first loop provided in an embodiment of the present application;

[0043] Figure 3 A schematic diagram of the structure of the second ring provided in an embodiment of the present application;

[0044] Figure 4 A schematic diagram of the structure of the third ring provided in the embodiment of the present application;

[0045] Figure 5 A schematic diagram of the structure of the fourth ring provided in an embodiment of the present application.

[0046] Reference numerals:

[0047] Ⅰ-Incoming material conveying line;

[0048] Ⅱ-First loop line;

[0049] a111-feeding section; a112-pre-welding section; a113-feeding section; a114-first fixture reflow section; a115-second fixture reflow section; a116-turning section; a12-second conveyor line; a14-feeding channel; a15-first lifting section; a21-feeding device; a22-first visual inspection device; a23-ear welding device; a231-first welding section; a232-second welding section; a24-first flattening device; a25-cutting device; a26-first dust removal member; a31-first gluing device; a311-first gluing section; a312-first slide section; a32-fourth visual inspection device; a33-cover plate pre-welding device; a34-second gluing device; a35-second visual inspection device ; a36-second flattening device; a37-third visual inspection device; a38-second dust removal piece; a39-contour meter detection; a41-third dust removal piece; a42-fifth visual inspection device; a43-lower surface dust removal detection station; a44-code scanning and error correction device; a451-first unloading and grabbing device; a452-unloading and outflow device; a453-unloading and testing device; a51-second outflow station; a511-second defective product manipulator; a512-second defective product storage unit; a52-motor maintenance station; a61-cover plate loading device; a611-cover plate gripper; a612-cover plate encoding unit; a613-cover plate loading station; a62-cover plate storage device; a63-first defective product storage unit; a7-fifth dust removal piece;

[0050] III-Second loop line;

[0051] b111-first section; b112-second section; b113-third section; b114-fourth section; b115-turntable; b12-second wire; b13-second lifting section; b14-second channel; b21-Mylar film material warehouse; b22-side plate material warehouse; b23-first hot melt section; b25-first material loading station; b31-cell gripper; b32-first polarity top cover bending device; b33-second polarity cover plate penetration device; b331-penetration manipulator; b332-second polarity cover plate feeding section; b41-second hot melt section; b42-coating device; b43-third hot melt section; b44-fourth hot melt section; b45-gluing mechanism; b46-first visual inspection section; b47-second visual inspection section; b51-first dust removal device; b52-scanning and error correction device; b53-second unloading and grabbing device; b531-unloading manipulator; b532-removal slide; b541-defective product gripper; b542-defective product storage section; b551-maintenance station; b552-moving sub-gripper; b6-second dust removal device;

[0052] IV-The third loop;

[0053] c111-first line segment; c112-second line segment; c113-third line segment; c114-fourth line segment; c115-fifth line segment; c12-second transport line; c131-first turntable; c132-second turntable; c133-third turntable; c14-third passage; c141-roadway; c142-sidewalk; c15-third lifting part; c161-first defective product outflow part; c162-second defective product outflow part; c171-first mover maintenance device; c172-second mover maintenance device; c21-second material loading station; c22-material loading gripper; c23-material storage part; c231-material transmission part; c2311-material inlet; c2312-material outlet c232-carrying part; c24-transfer vehicle; c25-first visual inspection part; c26-correction lever; c28-first dust removal device; c31-shell penetration device; c32-shell penetration gripper; c33-second dust removal device; c41-pre-welding gripper; c42-pressing part; c43-welding part; c44-second visual inspection part; c51-third visual inspection part; c52-second polarity cover plate storage part; c53-second polarity cover plate feeding gripper; c54-second polarity cover plate welding part; c56-contour meter inspection part; c57-glue sticking part; c58-fourth visual inspection part; c59-second polarity cover plate bending part; c50-second polarity cover plate pre-pressing part; c61-code scanning part; c62-third unloading station;

[0054] Ⅴ-Fourth loop line;

[0055] d111-first line; d112-second line; d113-third line; d114-fourth line; d115-fifth line; d12-second transmission line; d14-fourth channel; d15-fourth lifting part; d2-loading station; d31-spot welding unit; d32-first visual monitoring unit; d33-first peripheral welding unit; d41-second peripheral welding unit; d42-second visual monitoring unit; d43-pressing roller unit; d44-first dust removal unit; d45-contour meter monitoring unit; d451-first contour meter; d452-second contour meter; d5-fourth unloading station; d61-first mover maintenance unit; d62-second mover maintenance unit; d7-defective product discharge unit; d8-welding unit; d81-grabbing unit; d82-material preparation device; d83-welding processing unit; d9-second dust removal unit;

[0056] F1-first direction; F2-second direction. DETAILED DESCRIPTION

[0057] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0058] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0059] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0060] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0061] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] Refer to the following Figure 1 and Figure 5 The present invention describes a battery cell assembly production line and an automated production system according to some embodiments of the present application.

[0063] See also Figures 1 to 3 As shown, an embodiment of the first aspect of the present application provides a battery cell assembly production line, including a production loop line, and the production loop line includes a magnetic levitation transport loop line and processing equipment arranged along the magnetic levitation transport loop line. The magnetic levitation transport loop line includes a magnetic induction line body and a mover, and the mover can move along the magnetic induction line body under the magnetic induction action of the magnetic induction line body. The magnetic induction line body includes a first conveying part, a second conveying part and a longitudinal conveying part. The second conveying part is arranged at a height higher than the first conveying part. The two ends of the first conveying part are respectively connected to the two ends of the second conveying part via the longitudinal conveying part, so that the first conveying part, the second conveying part and the longitudinal conveying part are enclosed to form a closed conveying line, and the position of the closed conveying line below the second conveying part forms a loading channel that can enter the interior of the space enclosed by the closed conveying line.

[0064] The battery cell assembly production line provided by the above technical features, on the one hand, replaces the traditional conveyor belt transmission with the transmission method of the magnetic levitation transport loop line, and the integrated design of the assembly line mover fixture transportation and processing utilizes the high flexibility, intelligence, modularity, high speed, high acceleration and other characteristics of the magnetic levitation system to effectively improve the transmission efficiency between the various stations of the battery assembly line; on the other hand, by setting the second conveying part to be higher than the first conveying part, and making the two ends of the first conveying part connected to the two ends of the second conveying part via the longitudinal conveying part, so that the first conveying part, the second conveying part and the longitudinal conveying part are surrounded to form a closed conveying line, and the position of the closed conveying line below the second conveying part forms a Enter the loading channel inside the space enclosed by the closed conveyor line. In this way, after the mover passes the battery cells to be processed through the processing equipment in turn, the mover can be transported back to the initial position again via the closed conveyor line to realize the circulation of the mover. Compared with the existing double-layer conveyor line transmission method, the distance of the mover's reflux transmission is greatly shortened, which effectively reduces the failure rate of the mover's reflux. In addition, through the above-mentioned loading channel, it is convenient for personnel / materials to enter the interior of the space enclosed by the closed conveyor line. Not only can the internal storage materials of the space enclosed by the closed conveyor line be utilized to improve the space utilization rate of the battery cell pre-welding production loop line (hereinafter referred to as the loop line), but it is also convenient for each workstation to load and unload materials and shorten the loading and unloading path.

[0065] It should be noted that the above-mentioned magnetic levitation transport loop line can be understood as a magnetic levitation transmission device that uses the magnetic levitation principle to achieve transmission (for example, the CN220299746U magnetic levitation transmission device and magnetic levitation transmission line disclosed in Chinese patent document). The transmission principle and transmission structure of the device are both existing technologies in the field and will not be repeated here.

[0066] Preferably, the longitudinal conveying part may be a magnetic levitation conveying device connecting the first conveying part and the second conveying part, but is not limited thereto. As long as the conveying rhythm of the first conveying part can be met, the longitudinal conveying part may also be a robot, an elevator or other lifting equipment.

[0067] Preferably, if Figures 1 to 5 As shown, in the transmission direction perpendicular to the transmission line, the size of the mover is larger than the line width of the transmission line, so that both ends of the mover extend beyond the transmission line. In this way, on the one hand, the carrying space of the action can be expanded; on the other hand, when the battery cell to be processed is placed on the mover, the battery cell to be processed can extend relative to the transmission line, so that the processing equipment on the transmission line can act on the battery cell to be processed.

[0068] Preferably, if Figure 1 and Figure 3As shown, when the battery cell to be processed is placed on the mover, the two poles of the battery cell to be processed are relatively arranged at the two ends of the battery cell to be processed in a predetermined direction, and the predetermined direction is perpendicular to the conveying direction of the conveying line. In other words, when the battery cell to be processed is placed on the mover, the two poles of the battery cell to be processed (i.e., the positive pole and the negative pole) can respectively extend out on both sides of the conveying line in a direction perpendicular to its conveying direction.

[0069] Preferably, the mover may include a transmission part and a fixture part connected to each other, the mover is connected to the transmission line body through the transmission part, and the fixture part is used to place the battery cell to be processed. Correspondingly, the size of the fixture part in the transmission direction perpendicular to the closed transmission line may be larger than the width of the transmission line body to ensure the stability of the mover in carrying the battery cell to be processed.

[0070] Preferably, if Figure 1 As shown, the battery cell assembly production line may include multiple production loop lines and multiple grabbing devices. The multiple production loop lines are arranged in sequence along the first direction F1, and a grabbing device is arranged between two adjacent production loop lines to grab the products of one of the two adjacent production loop lines located upstream to the other one located upstream, so as to realize the flow of the battery cell assembly production line products along the first direction F1.

[0071] Preferably, if Figures 1 to 5 As shown, the magnetic induction line body may include a first conveying line segment, a loading line segment, a second conveying line segment and a unloading line segment arranged in sequence along the conveying direction of the magnetic induction line body. The loading line segment and the unloading line segment are both arranged on both sides of the closed conveying line in the first direction F1, and the loading line segment and the unloading line segment both extend along the second direction F2, and the first conveying line segment, the second conveying line segment and the second conveying part all extend along the first direction F1, so as to further realize the flow of the cells of the cell assembly production line along the first direction F1.

[0072] Preferably, the second conveying parts of multiple production loop lines are all arranged on the first conveying line segment, so that the entrance and exit of the channel of each production loop line are arranged on the same side of the multiple production loop lines, so as to facilitate the channel planning of the site where the battery cell assembly production line is located.

[0073] like Figures 1 to 5 As shown, F1 in the figure shows an example of the first direction F1, and F2 in the figure shows an example of the second direction F2, wherein the first direction F1 and the second direction F2 intersect, and correspondingly, the figure surrounded by the magnetic induction line body forms a parallelogram. Preferably, the first direction F1 and the second direction F2 are perpendicular to each other. In other words, the figure surrounded by the magnetic induction line body forms a rectangle, so as to adapt to the shape of most sites and save the space occupied by the battery cell assembly production line.

[0074] Correspondingly, if Figure 1 As shown, the first conveying part may further include a movable rotating part, and the first conveying line segment and the loading line segment, the second rotating line segment and the unloading line segment, and the unloading line segment and the first conveying line segment are all connected via the movable rotating part.

[0075] Optionally, the mover rotating part may be a rotating disk driven by a rotating motor.

[0076] Preferably, if Figures 1 to 5 As shown, each of the above-mentioned production loops may include a defective product outflow portion for flowing defective products of the production loop out of the corresponding magnetic induction line body.

[0077] Specifically, the defective product outflow portion may include a defective product gripper and a defective product temporary storage warehouse, and the defective product gripper can grab the defective products on the mover and put them into the defective product temporary storage warehouse.

[0078] Preferably, if Figures 1 to 5 As shown, each of the above-mentioned production lines may include a mover maintenance section, which may include a mover gripper and a mover maintenance station. The mover maintenance station is arranged on one side of the magnetic induction line body, and the mover gripper can grab the mover that needs maintenance and bring it to the mover maintenance station.

[0079] Preferably, if Figures 1 to 5 As shown, each of the above-mentioned production loops may include a jig dust removal section, a loading station is provided on the magnetic induction line, and the jig dust removal section is provided upstream of the loading station for dust removal of the reflowing unloaded mover.

[0080] In an embodiment, preferably, Figure 1 As shown, the above-mentioned battery cell assembly production line may include the four above-mentioned production loop lines. For the convenience of description, the four production loop lines are defined as the first loop line II, the second loop line III, the third loop line IV and the fourth loop line V according to the order in which they participate in production.

[0081] Preferably, if Figure 1 As shown, the above-mentioned battery cell assembly production line may also include an incoming material conveying line I, which is used to convey the bare battery cells to be processed to the loading station of the first loop line II.

[0082] It should be noted that the above-mentioned bare cells to be processed can be understood as bare cells after the lamination process. The incoming material conveyor line I can be used to connect the cell lamination device with the conveyor device of the loading station of the first loop line II, and the incoming material conveyor line I can be a conveyor belt, a conveyor roller or a magnetic induction conveyor.

[0083] The following will be Figure 1 and Figure 2 Taking the structure shown in the layout diagram of the first loop line II as an example, an example of the above-mentioned first loop line II is described.

[0084] Taking an example for ease of description, the magnetic levitation line body of the first loop line II is defined as a closed transmission line, the first transmission part of the first loop line II is defined as the first transmission line body, the second transmission part of the first loop line II is defined as the second transmission line body, the longitudinal transmission part of the first loop line II is defined as the first lifting part a15, the loading line segment of the first loop line II is defined as the loading segment a111, the unloading line segment of the first loop line II is defined as the unloading segment a113, the second transmission line segment of the first loop line II is defined as the pre-welding segment a112, the part of the first transmission line segment of the first loop line II located upstream of the second transmission part is the second fixture reflux segment a115, and the part of the first transmission line segment of the first loop line II located downstream of the second transmission part is the first fixture reflux segment a114.

[0085] In an embodiment, preferably, Figure 1 and Figure 2 As shown, the first loop II can be a battery cell pre-welding production loop, which includes a first loading unit, a tab shaping unit, a pre-welding unit and a unloading unit. The first loading unit, the tab shaping unit, the pre-welding unit and the unloading unit are arranged in sequence along the conveying line of the magnetic suspension line of the first loop II.

[0086] Preferably, if Figure 1 and Figure 2 As shown, the first loading unit may include a loading device a21, which includes a first grabbing portion for grabbing the bare battery cells transmitted from the feed conveyor line I to the loading station of the first loop line II onto the mover.

[0087] Optionally, the first grasping part may be a robot arm to grasp the to-be-processed battery cell that has completed the lamination process to a corresponding position of the jig part of the mover.

[0088] like Figure 1 As shown, the first grabbing portion can be arranged between the above-mentioned incoming material conveying line I and the first loop line II.

[0089] Preferably, the loading device a21 may also include a pole ear portion for arranging the pole ears of the battery cells to be processed on the mover.

[0090] Preferably, the loading device a21 may include two pole-pulling ears, which are arranged on both sides of the line body of the closed conveyor line to respectively correspond to the positive pole ears and the negative pole ears of the battery cells to be processed.

[0091] Optionally, the above-mentioned straightening ear part may include a lever and a linear drive member connected to each other, and the linear drive member can drive the lever to move from the middle of the battery cell to be processed to the outside along a transmission direction perpendicular to the closed conveyor line to straighten the ear of the battery cell to be processed, so as to facilitate the detection, processing and positioning of the ear.

[0092] Optionally, the linear drive member may be a cylinder, a linear motor, or the like.

[0093] Preferably, if Figure 1 and Figure 2 As shown, the first loading unit may include a plurality of loading devices a21, which may be arranged in sequence along the conveying direction of the closed conveyor line, so that the loop line can simultaneously process a plurality of groups of battery cells to be processed, so as to further improve the production capacity of the loop line.

[0094] like Figure 1 and Figure 2 The example of the first feeding unit having two feeding devices a21 is shown, wherein each feeding device a21 may include two processing stations. In other words, Figure 1 and Figure 2 The loop line example shown can simultaneously realize the assembly of four to-be-processed cells. However, it is not limited thereto, and the number of the feeding devices a21 and the processing stations included in the feeding devices a21 can be adaptively adjusted according to the actual required capacity of the loop line.

[0095] It should be noted that the above-mentioned feeding device a21 includes two processing stations, which can be understood as the feeding device a21 including two first grasping parts and two pole-pulling ear parts.

[0096] Preferably, if Figure 1 and Figure 2 As shown, the above-mentioned tab shaping unit can be arranged downstream of the above-mentioned first feeding unit, and the tab shaping unit can include a tab welding device a23 for welding and fixing the tabs of the battery cell to be processed.

[0097] Preferably, if Figure 1 and Figure 2 As shown, the above-mentioned pole tab welding device a23 may include a first welding portion a231 and a second welding portion a232 which are arranged opposite to each other on both sides of the loading section a111, so that the pole tab welding device a23 can simultaneously weld and fix the positive pole tab and the negative pole tab of the pole tab to be processed, further improving the processing efficiency of the pole tab welding device a23.

[0098] Optionally, the first welding part a231 and the second welding part a232 may both be ultrasonic direct welding devices. However, it is not limited thereto, and the first welding part a231 and the second welding part a232 may also be other welding devices as long as the tab can be welded and fixed.

[0099] Preferably, if Figure 1 and Figure 2As shown, the number of the above-mentioned pole tab welding devices a23 can be multiple, and the multiple pole tab welding devices a23 are arranged in sequence along the conveying direction of the closed conveyor line, wherein at least one of the multiple pole tab welding devices a23 is a spare pole tab welding device a23, that is, when other pole tab welding devices a23 fail, the spare pole tab welding device a23 can be used to replace the failed pole tab welding device a23, thereby realizing non-stop maintenance of the loop line.

[0100] like Figure 1 and Figure 2 As shown, the figure shows an example in which the number of the tab welding devices a23 is 5. Among them, the one located at the top of the figure is a spare device, and the other four are normal operation devices. Such an arrangement can effectively correspond to the above-mentioned two double-station feeding devices a21, so that the loop line can simultaneously process four battery cells to be processed, thereby improving the production capacity of the loop line.

[0101] Preferably, if Figure 1 and Figure 2 As shown, the tab shaping unit may further include a first visual inspection device a22, which is disposed between the first feeding unit and the tab welding device a23, and is used to detect the folding of the tabs and diaphragms of the battery cells to be processed, so as to inspect the battery cells to be processed after the tab arrangement process is completed by straightening the tabs, and record the numbers of the battery cells to be processed that still have folded tabs and diaphragms after the tab arrangement, so as to facilitate their discharge in subsequent processes.

[0102] Optionally, the first visual detection device a22 and the second visual detection device a35 and the third visual detection device a37 described below may all be CCD cameras or other forms of image acquisition devices.

[0103] Preferably, the first visual inspection device a22 may include two inspection viewing angles, which may be relatively arranged on both sides of the loading section a111 to respectively detect the positive electrode tab and the negative electrode tab of the battery cell to be processed.

[0104] Preferably, if Figure 1 and Figure 2 As shown, the tab shaping unit may further include a first flattening device a24, which is disposed downstream of the plurality of tab welding devices a23 as a whole, so as to flatten and shape the tabs of the battery cell to be processed. The first flattening device a24 can flatten the deformed tabs after welding at the tab welding device a23 by pressing downward, so as to facilitate the positioning of the tabs of the battery cell to be processed in subsequent steps.

[0105] Preferably, not shown in the figure, the first flattening device a24 may include a driving member and a pressing block connected to each other, and the driving member can drive the pressing block to lift and press down to achieve the action of flattening the tab. Optionally, the driving member may be a cylinder, a linear motor, etc.

[0106] Preferably, the first flattening device a24 may include two pressing blocks, which may be relatively arranged on both sides of the loading section a111 to respectively flatten the positive electrode ears and the negative electrode ears of the battery cell to be processed.

[0107] Preferably, if Figure 1 and Figure 2 As shown, the tab shaping unit may further include a trimming device a25, which is disposed downstream of the first flattening device a24 to trim excess portions of the flattened tabs of the battery cells to be processed.

[0108] Preferably, not shown in the figure, the cutting device a25 may include a movable member and a cutter connected to each other, so that the movable member drives the cutter to perform the action of cutting the pole ear. Optionally, the movable member may be a cylinder, a linear motor or a manipulator. Optionally, the cutter may be a rotary cutter, a laser cutting head, etc.

[0109] Preferably, the cutting device a25 may include two cutters, which may be arranged oppositely on both sides of the loading section a111 to respectively detect the cutting of the positive electrode ears and the negative electrode ears of the battery cell to be processed.

[0110] Preferably, if Figure 1 and Figure 2 As shown, the tab shaping unit may further include a first dust removal member a26, which is disposed downstream of the cutting device a25 and is used to remove cutting dust from the battery cells to be processed.

[0111] Optionally, the first dust removal member a26 may be a negative pressure adsorption device to remove dust on the surface of the battery cell to be processed by negative pressure adsorption. However, it is not limited thereto, and as long as the dust on the surface of the battery cell to be processed can be removed, the first dust removal member a26 may also be other methods, such as electrostatic dust removal, mechanical sweeping, etc.

[0112] In an embodiment, Figure 1 and Figure 2 As shown, the first conveyor line body may further include a pre-welding section a112, which may be connected to the downstream section of the feeding section a111.

[0113] Similarly, the pre-welding section a112 can also extend in a straight line direction, and its beneficial effects are similar to those of the above-mentioned feeding section a111, which will not be described in detail. For ease of description, the extension direction of the pre-welding section a112 is defined as the second direction F2.

[0114] Preferably, the first direction F1 intersects with the second direction F2 to save space occupied by the loop line. Correspondingly, the first conveyor line body may further include a turning portion a116, and the feeding section a111 and the pre-welding section a112 may be connected via the turning portion a116, so as to rotate the mover through the turning portion a116, thereby ensuring that the relative arrangement direction of the tabs of the battery cell to be processed is always perpendicular to the closed conveyor line.

[0115] like Figure 1 As shown, the first direction F1 can be perpendicular to the second direction F2, which is convenient for the rotational positioning of the steering portion a116 on the one hand, and convenient for saving the space occupied by the loop line on the other hand.

[0116] Optionally, the steering portion a116 may be a rotating disk driven by a rotating motor.

[0117] Preferably, if Figure 1 and Figure 4 As shown, the pre-welding unit can be arranged in the pre-welding section a112. That is, the pre-welding unit is arranged downstream of the tab shaping unit to achieve pre-welding of the tab and the end plate of the battery cell to be processed.

[0118] Preferably, if Figure 1 and Figure 2 As shown, the pre-welding unit may include a first glue sticking device a31, which is arranged downstream of the tab shaping unit and is used to stick a first insulating glue on the end of the battery cell to be processed close to the closed conveyor line.

[0119] Alternatively, if Figure 1 and Figure 2 As shown, the pre-welding unit may further include a second visual inspection device a35. The second visual inspection device a35 may be disposed between the tab shaping unit and the first glue sticking device a31 to detect the tab cutting condition of the battery cell to be processed.

[0120] It should be noted that, at each inspection station of the loop line (for example, the first visual inspection device a22, the second visual inspection device a35, the third visual inspection device a37 described below, and the contour meter inspection a39 described below, etc.), if the inspection is qualified, the first gluing device a31 will perform the gluing process; if the inspection is unqualified, the subsequent processing process will be stopped until it flows to the outflow process of the loop line and is eliminated. In this way, deviations can be corrected in time, defective products can be discovered in time, and processing time and materials can be avoided from being wasted on defective products.

[0121] Preferably, there are multiple first gluing devices a31, and the multiple first gluing devices a31 are arranged in sequence along the conveying direction of the pre-welding section a112, wherein at least one of the multiple first gluing devices a31 is a spare first gluing device a31. When other first gluing devices a31 among the multiple first gluing devices a31 need to be replaced or repaired, the spare first gluing device a31 can be used to replace the first gluing device a31 that needs to be replaced or repaired, so that the loop line can be replaced or repaired without stopping, thereby further improving the loop line production capacity.

[0122] Alternatively, if Figure 2 As shown, the first glue device a31 may include a first glue portion a311 and a first slide portion a312 which are slidably connected to each other. The first slide portion a312 may extend in a direction perpendicular to the pre-welding section a112 so that the first glue portion a311 can slide out of the pre-welding section a112 along the first slide to facilitate glue changing operations.

[0123] Optionally, the first gluing section a311 may include two straight-line high-speed gluing machines arranged opposite to each other in a direction perpendicular to the pre-welding section a112, so that the first gluing device a31 can simultaneously apply the first insulating glue to the positive and negative ears of the battery cell to be processed.

[0124] Preferably, if Figure 1 and Figure 2 As shown, the pre-welding unit may further include a cover plate storage device a62, which is provided with a buffer space for storing cover plates.

[0125] Preferably, if Figure 1 and Figure 4 As shown, the cover plate storage device a62 can be arranged inside the space enclosed by the closed conveyor line, and the above-mentioned loading channel a14 can be connected to the cover plate storage device a62 to realize loading for the cover plate storage device a62.

[0126] Optionally, the loop line may include an AGV trolley, which can pass through the above-mentioned loading channel a14 to realize the automation of cover sheet loading.

[0127] Preferably, if Figure 1 and Figure 2 As shown, the pre-welding unit may further include a cover plate loading device a61, which may be disposed downstream of the first gluing device a31 to grab the cover plate a82 in the cover plate storage device a62 to the corresponding position of the mover.

[0128] Preferably, if Figure 1 and Figure 2As shown, the pre-welding unit may further include a second flattening device a36, which is disposed between the first glue sticking device a31 and the cover plate feeding device a61 described below, and is used to flatten the first insulating glue so that the first insulating glue is evenly attached to the battery cell to be processed. The structure and principle of the second flattening device a36 are similar to those of the first flattening device a24 described above, and will not be described in detail here.

[0129] Preferably, if Figure 1 and Figure 2 As shown, the pre-welding unit may also include a third visual inspection device a37, which is arranged between the second flattening device a36 and the cover plate feeding device a61 to detect the quality of the first insulating glue attachment, thereby facilitating the identification and recording of defective products produced by the first gluing device a31 process.

[0130] Preferably, if Figure 1 and Figure 2 As shown, the cover plate loading device a61 may include a cover plate gripper a611 and a cover plate loading station a613. The cover plate loading station a613 is arranged on the pre-welding section a112 and downstream of the first gluing device a31. When the mover enters the cover plate loading station a613, the cover plate gripper a611 can place the cover plate in the cover plate storage device a62 at a predetermined position of the mover.

[0131] Preferably, if Figure 1 and Figure 2 As shown, the plate feeding device a21 may further include a cover plate coding part a612, which is disposed between the cover plate storage device a62 and the cover plate feeding station a613 to mark the cover plate. Optionally, the cover plate coding part a612 may be a laser marking machine, a labeling machine, or the like.

[0132] Preferably, if Figure 1 and Figure 2 As shown, the above-mentioned cover plates are only the cover plates corresponding to the polarity of the pole ears of the battery cells to be processed located on the inner side of the closed conveyor line. In this way, on the one hand, it is not only convenient for the cover plate loading device a61 located on the inner side to load materials, but also convenient for saving space and avoiding the arrangement of two sets of cover plate loading devices a61 and cover plate storage devices a62; on the other hand, the placement quality is guaranteed to avoid the loss of the cover plate of one polarity due to poor assembly of the cover plate of another polarity, thereby avoiding material waste.

[0133] like Figure 1 and Figure 2 , shows an example in which the polarity of the tab of the battery cell to be processed located inside the closed conveyor line is negative, and correspondingly, the cover plates stored in the cover plate storage device a62 are negative cover plates. However, it is not limited thereto, and the polarity of the tab of the battery cell to be processed located inside the closed conveyor line can also be positive.

[0134] Preferably, if Figure 1 and Figure 2 As shown, the pre-welding unit may further include a first outflow station for moving defective products upstream of the first outflow station out of the closed conveying line.

[0135] Preferably, if Figure 1 and Figure 4 The above-mentioned first outflow station may include a first defective product storage section a63, which is arranged downstream of the third visual inspection device a37 and on one side of the cover plate storage device a62. On the one hand, it is used to store defective products flowing out of the first outflow station; on the other hand, the first defective product storage section a63 is arranged on one side of the cover plate storage device a62, so as to facilitate the AGV car that completes the cover plate loading to transport the defective products out of the loop.

[0136] Alternatively, if Figure 1 and Figure 2 As shown, the grabbing range of the cover gripper a611 can cover the first defective product storage part a63, so that the defective products can be grabbed to the first defective product storage part a63 by the cover gripper a611, so as to save the cost of the loop equipment.

[0137] Alternatively, if Figure 1 and Figure 2 As shown, the first outflow station may also include a first defective product robot, so that the defective products can be directly caught by the first defective product robot and placed in the first defective product storage part a63, thereby effectively improving the loop line production efficiency.

[0138] Preferably, if Figure 1 and Figure 2 As shown, the pre-welding unit may include a cover plate pre-welding device a33, which is arranged downstream of the cover plate feeding device a61, and is used to weld the pole ears of the battery cell to be processed to the cover plate, so as to realize the pre-welding process of the cover plate and the battery cell to be processed.

[0139] Preferably, the cover plate pre-welding device a33 can be a laser welder to ensure the welding accuracy between the cover plate and the tab.

[0140] Preferably, if Figure 1 and Figure 2 As shown, the pre-welding unit may include a second glue sticking device a34, which is arranged downstream of the cover plate pre-welding device a33 to cover the welds between the battery cell to be processed and the cover plate with a second insulating glue.

[0141] like Figure 2As shown, the second glue sticking device a34 may also include a second glue sticking portion and a second slide portion. The setting method and setting principle of the second glue sticking device a34 are similar to those of the first glue sticking device a31, and will not be repeated herein.

[0142] It should be noted that the second gluing unit may be provided with a high-speed gluing machine only on one side of the pre-welding section a112 where the cover plate feeding device a61 is located, so as to correspond to the welds of the battery cell to be processed and the cover plate.

[0143] Preferably, if Figure 1 and Figure 2 As shown, there are multiple second gluing devices a34, and the multiple second gluing devices a34 are arranged in sequence along the conveying direction of the closed conveying line, wherein at least one of the multiple second gluing devices a34 is a spare second gluing device a34, and the beneficial effect is similar to that of the above-mentioned first gluing device a31, which will not be repeated.

[0144] Preferably, if Figure 1 and Figure 2 As shown, the pre-welding unit may further include a second dust removal member a38, which is disposed downstream of the cover plate pre-welding device a33 and upstream of the second glue sticking device a34 described below, to remove processing dust from the battery cells to be processed. The dust removal principle and structure of the second dust removal member a38 are similar to those of the first dust removal member a26, and will not be described in detail.

[0145] Preferably, if Figure 1 and Figure 2 As shown, the pre-welding unit may further include a profiler detection a39, which is disposed between the second dust removal member a38 and the second glue sticking device a34, and is used to detect the weld quality of both the battery cell to be processed and the cover plate.

[0146] Preferably, if Figure 1 and Figure 2 As shown, the pre-welding unit may further include a fourth visual inspection device a32, which is disposed downstream of the second gluing device a34 and is used to inspect the attachment quality of the second insulating glue.

[0147] In an embodiment, preferably, Figure 1 and Figure 2 As shown, the first conveyor line body may further include a material unloading section a113, and the material unloading unit is arranged in the material unloading section a113. The material unloading section a113 and the material loading section a111 may be arranged on the same side of the pre-welding section a112, so as to form a loop; and the material unloading section a113 and the material loading section a111 are respectively connected to the downstream end and the upstream section of the pre-welding section a112, so as to facilitate the battery cell pre-welding production loop line to flow the processed finished products to the subsequent process along the second direction F2.

[0148] Similarly, the unloading section a113 can also extend in a straight line direction, and its beneficial effects are similar to those of the loading section a111, which will not be described in detail. For ease of description, the extension direction of the pre-welding section a112 is defined as the third direction.

[0149] Preferably, the third direction may also intersect with the second direction F2, so as to save the space occupied by the loop line. Correspondingly, the blanking section a113 and the pre-welding section a112 may also be connected via the steering portion a116, so as to rotate the mover through the steering portion a116, thereby ensuring that the relative arrangement direction of the tabs of the battery cell to be processed is always perpendicular to the closed conveyor line.

[0150] Preferably, if Figure 1 As shown, the third direction is parallel to the first direction F1 so as to save the space occupied by the loop line.

[0151] Preferably, if Figure 1 and Figure 2 As shown, the unloading unit may include a third dust removal member a41, which is arranged downstream of the pre-welding unit and is used to remove dust from the upper surface of the battery cell to be processed. The third dust removal member a41 is similar to the first dust removal member a26 in terms of arrangement and dust removal principle, and will not be described in detail.

[0152] Preferably, if Figure 1 and Figure 2 As shown, the above-mentioned unloading unit can also include a fifth visual inspection device a42, which is arranged downstream of the third dust removal member a41 and is used to inspect the upper surface quality of the battery cell to be processed. The fifth visual inspection device a42 is similar to the arrangement method and detection principle of the above-mentioned first visual inspection unit, and will not be repeated.

[0153] Preferably, if Figure 1 and Figure 2 As shown, the above-mentioned unloading unit may also include a lower surface dust removal detection station a43. Specifically, not shown in the figure, the lower surface dust removal detection station a43 may include a lifting gripper, a fourth dust removal device and a sixth visual inspection. The battery cells to be processed flowing into the lower surface dust removal detection station a43 can be lifted by the lifting gripper to be separated from the mover. At this time, the fourth dust removal device and the sixth visual inspection perform dust removal and quality inspection on the lower surface of the battery cells to be processed in turn. After completion, the lifting gripper puts the battery cells to be processed back to the corresponding mover.

[0154] Optionally, the lifting gripper may be a manipulator or other lifting devices. The fourth dust removal device and the sixth visual detection device may be arranged below the moving element conveying plane to collect the lower surface information of the battery cell to be processed.

[0155] Preferably, if Figure 1 and Figure 2As shown, the above-mentioned unloading unit can also include an unloading outflow device a452 for placing and / or transporting qualified battery cells to be processed.

[0156] Alternatively, if Figure 2 As shown, the above-mentioned material discharge device a452 can be a conveyor line extending along the second direction F2, so as to facilitate the flow of qualified battery cells to be processed to the downstream process.

[0157] However, it is not limited to this, and the material discharge device a452 can also be a storage rack, an AGV transport vehicle or other storage and transportation device.

[0158] Preferably, if Figure 1 and Figure 2 As shown, the above-mentioned unloading unit can also include a first unloading grabbing device a451, which grabs the qualified battery cells to be processed and sends them to the outflow device.

[0159] Preferably, if Figure 1 and Figure 2 As shown, the above-mentioned unloading unit can also include an unloading testing device a453, which can be arranged on the unloading outflow device a452 to detect the electrical connection quality of qualified battery cells to be processed.

[0160] Optionally, the blanking test device a453 may include a Hipot test device.

[0161] Preferably, if Figure 1 As shown, the material discharge device a452 can be connected to the battery cell loading b31 of the second loop line III described below to transfer qualified products assembled on the first loop line II to the second loop line III.

[0162] Alternatively, if Figure 1 and Figure 2 As shown, the above-mentioned unloading unit may also include a code scanning and troubleshooting device a44, which may be arranged between the lower surface dust removal detection station a43 and the first unloading and grabbing device a451, and is used to identify the mover code, the cover plate code and the code of the battery cell to be processed, so as to facilitate troubleshooting of the loop process. Optionally, the code scanning and troubleshooting device a44 may include multiple code scanning guns.

[0163] In an embodiment, Figure 1 and Figure 2 As shown, the first conveyor line body may further include a second fixture return section a115. The second fixture return section a115 connects the downstream end of the material discharge section a113 and the upstream section of the second conveyor line body a12 to enable the mover to flow into the second conveyor line body a12.

[0164] Preferably, if Figure 1As shown, the extension direction of the second conveyor line a12 and the extension direction of the second fixture return section a115 can both extend along the second direction F2. Correspondingly, the second fixture return section a115 and the unloading section a113 can also be connected via the turning portion a116.

[0165] Preferably, if Figure 1 and Figure 2 As shown, the second fixture reflow section a115 may also be provided with a second outflow station a51, which is used as the outflow station to move defective products upstream of the second outflow station a51 out of the loop.

[0166] Similarly, if Figure 1 and Figure 2 As shown, the second outflow station a51 may include a second defective product robot a511 and a second defective product storage section a512, so that the defective products can be automatically caught by the second defective product robot a511 and placed in the second defective product storage section a512.

[0167] Preferably, if Figure 1 and Figure 2 As shown, the second jig return section a115 can also be provided with a mover maintenance station a52 and a mover gripper, the mover maintenance station is provided on one side of the second jig return section a115, and the mover gripper can grab the faulty mover to the second jig return section a115 and bring it to the maintenance station for easy maintenance of the mover. Optionally, the mover gripper can be a manipulator.

[0168] In an embodiment, Figure 1 and Figure 2 As shown, the first conveyor line body may further include a first fixture return section a114. The first fixture return section a114 connects the downstream end of the second conveyor line body a12 and the upstream end of the loading section a111 to realize the return of the mover to the loading section a111.

[0169] Preferably, if Figure 1 As shown, the extension direction of the first jig reflux section a114 can also extend along the second direction F2. Correspondingly, the first jig reflux section a114 and the feeding section a111 can also be connected via the turning portion a116.

[0170] Preferably, if Figure 1 and Figure 3 As described above, the first jig return section a114 may also be provided with a fifth dust removal member a7 for dust removal of the mover.

[0171] The following will be Figure 1 and Figure 3 Taking the structure shown in the layout diagram of the second loop line III as an example, an example of the above-mentioned second loop line III is described.

[0172] Taking an example for ease of description, the magnetic levitation line body of the second loop line III is defined as the transmission line body, the first transmission part of the second loop line III is defined as the first line body, the second transmission part of the second loop line III is defined as the second line body, the loading line segment of the second loop line III is defined as the second segment b112, the unloading line segment of the second loop line III is defined as the fourth segment b114, the second transmission line segment of the second loop line III is defined as the third segment b113, the first transmission line segment of the second loop line III is defined as the first segment b111, and the movable rotating part of the second loop line III is defined as the turntable part b115.

[0173] like Figure 1 and Figure 3 As shown, the second loop III can be a battery cell film production loop, which includes a Mylar film side plate feeding unit, a cell feeding unit, a film coating unit and a feeding unit. The magnetic suspension transport line includes a conveyor line body and a mover, which can move along the conveyor line body under the magnetic induction of the conveyor line body. The conveyor line body includes a first line body, a second line body b12 and a second lifting part b13 (i.e., the longitudinal conveying part of the second loop III). The conveying plane where the second line body b12 is located is higher than the conveying plane where the first line body is located. The two ends of the second line body b12 are respectively connected to the two ends of the first line body by the second lifting part b13, so that the conveyor line body is surrounded to form a closed loop, and a second channel b14 that can enter the interior of the conveyor line body is formed below the second line body b12 of the conveyor line body. The Mylar film side plate feeding unit, the cell feeding unit, the film coating unit and the feeding unit are arranged in sequence along the conveying direction of the conveyor line body.

[0174] In an embodiment, preferably, Figure 1 and Figure 3 As shown, the Mylar film side plate loading unit may include a Mylar film material storehouse b21 for storing Mylar film (also known as Mylar film) and a side plate material storehouse b22 for storing side plates.

[0175] Preferably, if Figure 1 and Figure 3 As shown, the Mylar film material warehouse b21 and the side plate material warehouse b22 can be both arranged in the space enclosed by the conveyor line body, and the second channel b14 can be connected to the Mylar film material warehouse b21 and the side plate material warehouse b22 to load the Mylar film material warehouse b21 and the side plate material warehouse b22. In this way, the space of the battery cell film production loop line is greatly saved, and the space utilization rate of the battery cell film production loop line is improved.

[0176] Optionally, the battery cell film production line may further include an AGV trolley, which can pass through the second channel b14 to achieve automatic loading of the Mylar film material warehouse b21 and the side plate material warehouse b22.

[0177] Preferably, if Figure 1 and Figure 3As shown, the Mylar film side plate loading unit may further include a first hot-melt portion b23 for hot-melt fixing the Mylar film and the side plate.

[0178] Optionally, not shown in the figure, the first hot melt portion b23 may be a hot melt machine, which may include a hot melt head capable of generating heat and a moving mechanism for driving the hot melt head to move. When the hot melt machine starts working, the moving mechanism drives the hot melt head to act on the Mylar film, so that the Mylar film is partially melted under the action of the hot melt head and adheres to the object to be fixed (such as a side panel, a battery cell to be processed), thereby fixing the Mylar film. It should be noted that the hot melt machine is an existing product in the art, and the driving structure and hot melt principle of its moving mechanism are both existing technologies in the art, which will not be described in detail here.

[0179] Preferably, if Figure 1 and Figure 3 As shown, the Mylar film side panel loading unit may further include a circulation component, which may include a circulation moving line and a circulation grabbing portion, wherein the Mylar film material storehouse b21, the side panel material storehouse b22 and the first hot melt portion b23 are sequentially arranged along the flow direction of the circulation moving line, and the circulation grabbing portion can flow and move along the circulation moving line to sequentially grab the Mylar film of the Mylar film material storehouse b21 and the side panel of the side panel material storehouse b22 to the first hot melt portion b23, and then grab the combination of the Mylar film and the side panel that have been hot-melt fixed to the mover, thereby realizing the loading of the Mylar film and the side panel.

[0180] Alternatively, if Figure 1 and Figure 3 As shown, the conveyor line is provided with a first material loading station b25, and the flow grabbing part can grab the combination of the Mylar film and the side plate that have been hot-melt fixed to the mover in the first material loading station b25 to ensure the accuracy and timeliness of material loading.

[0181] Preferably, if Figure 1 and Figure 3 As shown, the first material loading station b25 can be arranged in the first section b111, so that the mover reflowed through the second wire body b12 can directly enter the first material loading station b25 to realize the circulation of the mover.

[0182] Preferably, if Figure 1 and Figure 3 As shown, the side panel material storehouse b22 and the Mylar film material storehouse b21 can be arranged side by side along the first direction F1 on the inner side of the first section b111 to facilitate the loading and conveying of the Mylar film and the side panel.

[0183] Preferably, if Figure 1 and Figure 3As shown, the above-mentioned flow moving line may include a first conveyor line, which may extend along a first direction F1, and the above-mentioned side plate material store b22 and Mylar film material store b21 are both arranged on the side of the first conveyor line away from the first section b111, so as to transfer the Mylar film of the Mylar film material store b21 to the loading position of the side plate material store b22 of the first conveyor line.

[0184] Preferably, if Figure 3 As shown, the flow grabbing section may include a Mylar film grabber, which can move between the Mylar film material warehouse b21 and the first conveying line to grab the Mylar film in the Mylar film material warehouse b21 to the first conveying line.

[0185] Similarly, if Figure 3 As shown, the flow grabbing section may include a side panel grabber, which can move between the side panel material storehouse b22 and the first conveying line to grab the side panels in the side panel material storehouse b22 to the first conveying line and place them on the corresponding position of the Mylar film.

[0186] Preferably, if Figure 1 and Figure 3 As shown, the above-mentioned circulation moving line can also include a second conveying line, which can extend along the first direction F1, and the above-mentioned first hot melt portion b23 is arranged at one end of the second conveying line, and the other end of the second conveying line is aligned with the above-mentioned material loading position, so as to facilitate the transfer of the binding piece fixed by the first hot melt portion b23 to the first material loading station b25. In this way, the circulation moving line is split into the first conveying line and the second conveying line arranged side by side, which effectively shortens the span of the Mylar film side plate feeding unit in the first direction F1, so that the span of the Mylar film side plate feeding unit in the first direction F1 is less than the length of the above-mentioned first section b111, so that the Mylar film side plate feeding unit effectively avoids blocking the above-mentioned second channel b14, ensures the patency of the second channel b14, and saves the space occupied by the Mylar film side plate feeding unit.

[0187] Correspondingly, the side panel gripper can also move between the first conveyor line and the second conveyor line to grab the side panel and Mylar film placed on the first conveyor line and bring them to the second conveyor line, so as to fix the first hot melt portion b23 arranged on the second conveyor line.

[0188] Preferably, not shown in the figure, the above-mentioned circulation moving line can also be provided with a conveying carrier, which can circulate on the first conveying line and the second conveying line, and the conveying carrier is provided with a placement clamp for placing the Mylar film and the side panel to facilitate the positioning and fixation of the Mylar film and the side panel.

[0189] Optionally, the above-mentioned flow moving line can be a magnetic levitation transportation device, but is not limited to this. As long as the flow and transmission rhythm of the flow moving line can be achieved, the flow moving line can also be other transmission devices, such as a conveyor belt.

[0190] Preferably, if Figure 3 As shown, the flow grabbing part may further include a material loading grabber, which may be aligned with the first material loading station b25. Preferably, the material loading grabber may move between the second conveying line and the first section b111 to grab the coupling member transferred to the grabbing range of the material loading grabber through the second conveying line onto the mover in the first material loading station b25.

[0191] Optionally, the material loading gripper can also move between the second conveyor line and the first conveyor line to grab the empty conveying carrier to the first conveyor line, thereby realizing the circulation of the conveying carrier on the circulation moving line.

[0192] However, it is not limited to this, the above-mentioned flow moving line is not limited to the above-mentioned segmented form, as long as it can execute the flow of assembly and loading of Mylar membrane and side panels, the above-mentioned flow moving line can also be in the form of a loop line or in the form of upper and lower multi-layer transmission.

[0193] In addition, the circulation component is not limited to the form of the above-mentioned circulation moving line and the circulation grabbing part. As long as it can perform the assembly and loading of the Mylar film and the side plate, the above-mentioned circulation component can also be in the form of a circulation track and a circulation robot that are slidably connected to each other, that is, the Mylar film material warehouse b21, the side plate material warehouse b22, the first hot melt part b23 and the first material loading station b25 are arranged along the circulation track, and the circulation robot slides on the circulation slide to grab the Mylar film and the side plate one by one, grab both the Mylar film and the side plate to the first hot melt part b23 for hot melting and fixing, and then grab the combination of the two in the first hot melt part b23 again and move it to the mover in the first material loading station b25 to realize the material loading action.

[0194] Optionally, the Mylar film gripper, the side plate gripper and the material loading gripper may all be mechanical arms.

[0195] Preferably, the Mylar film gripper, the side plate gripper and the material feeding gripper may include a plurality of gripping stations, so that the Mylar film side feeding unit can simultaneously feed multiple groups of materials, thereby improving the material feeding efficiency.

[0196] In an embodiment, Figure 1 and Figure 3 As shown, the conveyor line may also be provided with a cell loading station. Preferably, the cell loading station may be provided in the second section b112, so as to realize the cell flow along the first direction F1 of the battery production system described below.

[0197] Correspondingly, if Figure 3 As shown, the above-mentioned battery cell loading unit can be arranged on the side of the second section b112.

[0198] Preferably, if Figure 1 and Figure 3 As shown, the above-mentioned battery cell loading unit may include a battery cell gripper b31. When the mover carrying the Mylar film and the side plate flows into the battery cell loading station, the battery cell gripper b31 can grab the battery cell to be processed to a predetermined position of the mover to realize the battery cell loading action.

[0199] Preferably, if Figure 1 and Figure 3 As shown, the battery cell loading unit can also include a first polarity top cover bending device b32 and a second polarity cover plate passing device b33, the first polarity top cover bending device is used to bend the first polarity pole ear of the battery cell to be processed, so that the first polarity top cover of the battery cell to be processed is covered on the end of the battery cell to be processed, and the second polarity cover plate passing device b33 can pass the second polarity cover on the second polarity pole ear of the battery cell to be processed, the first polarity top cover bending device b32 and the second polarity cover plate passing device b33 are relatively arranged in a conveying direction perpendicular to the conveying line body, so that when the battery cell to be processed is conveyed between the first polarity top cover bending device b32 and the second polarity cover plate passing device b33, the first polarity top cover bending device b32 and the second polarity cover plate passing device b33 can act on both ends of the battery cell to be processed at the same time, so as to realize the simultaneous execution of the first polarity top cover bending and the second polarity cover plate passing actions, thereby further improving the assembly efficiency of the battery cell film production loop line.

[0200] Preferably, if Figure 1 and Figure 3 As shown, the first polarity top cover bending device can be a battery ear bending device, which is an existing device in the art and its structure will not be described in detail here.

[0201] Preferably, if Figure 1 and Figure 3 As shown, the second polarity cover plate piercing device b33 may include a piercing robot b331, which can clamp the second polarity cover plate and sleeve the second polarity cover plate on the outer side of the second polarity pole ear of the battery cell to be processed to realize the piercing action of the second polarity cover plate.

[0202] Preferably, if Figure 1 and Figure 3As shown, the second polarity cover plate threading device b33 may further include a second polarity cover plate feeding part b332, which may be arranged on the inner side of the space enclosed by the conveying line body, so as to facilitate the feeding of the second polarity cover plate via the AGV trolley, and the threading robot b331 may clamp the second polarity cover plates one by one from the second polarity cover plate feeding part b332.

[0203] Optionally, the second polarity cover plate loading part b332 may be a vibration plate to facilitate loading of the second polarity cover plates one by one.

[0204] like Figure 3 As shown, the first polarity shown in the figure is an example of a negative electrode and a second polarity is a positive electrode, but it is not limited to this. The installation sequence of the positive electrode cover and the negative electrode cover can be adaptively adjusted according to the assembly process sequence of the battery cell. In other words, the above-mentioned first polarity can also be a positive electrode, and the second polarity can also be a negative electrode.

[0205] In an embodiment, preferably, Figure 1 As shown, the coating unit may further include a second hot melt portion b41, which may be disposed downstream of the battery cell feeding unit. When the mover moves to the processing area of ​​the second hot melt portion b41, the second hot melt portion b41 may act on the bottom surface of the battery cell to be processed to hot-melt and fix the Mylar film to the bottom surface of the battery cell to be processed, so as to facilitate the positioning of the Mylar film in the downstream coating process. Similarly, the second hot melt portion b41 may also be the hot melt machine.

[0206] Preferably, if Figure 3 As shown, the second hot melt portion b41 can be arranged downstream of the battery cell feeding unit of the second section b112.

[0207] Alternatively, if Figure 3 As shown, the second hot melt section b41 may include a plurality of hot melt machines, which may be arranged in sequence along the conveying direction of the second section b112, so that the second hot melt section b41 may simultaneously perform hot melt fixation on the bottom of a plurality of batteries to be processed, thereby improving the production efficiency and capacity of the battery cell film production line.

[0208] like Figure 3 As shown, the above-mentioned coating unit may further include a coating device b42, which can bend the portion of the Mylar film that exceeds the battery cell to be processed in sequence along the outer contour of the battery cell to be processed, so that the Mylar film covers the battery cell to be processed for at least one week.

[0209] It should be noted that the coating device b42 can be a battery cell Mylar film coating equipment, which is an existing equipment in the field, and its structure and coating principle are existing technologies in the field, which will not be repeated here.

[0210] Preferably, if Figure 3 As shown, the above-mentioned coating device b42 can also be arranged on the second section b112. In this way, the second section b112 is provided with the above-mentioned second hot melt portion b41 and the coating device b42 on the downstream side of the second polarity cover plate penetration device b33, which enables the third section b113 to form a certain loading space connected to the second channel b14 between the second polarity cover plate penetration device b33 in the second direction F2, so as to facilitate the loading of the second polarity cover plate penetration device b33.

[0211] Preferably, if Figure 3 As shown, the number of the above-mentioned coating devices b42 can be multiple, and multiple coating stations can be set on each coating device b42, so that the battery cell coating production line can simultaneously perform coating processes of multiple batteries to be processed, thereby improving the production efficiency and capacity of the battery cell coating production line.

[0212] Alternatively, if Figure 3 As shown, the number of the film coating stations, the number of hot melt machines included in the above-mentioned second hot melt part b41, the number of the first polarity top cover bending devices b32, the number of the second polarity cover plate threading devices b33 and the number of grabbing stations of the Mylar film side plate feeding unit (as well as the number of each operating station in the subsequent process, in other words, the operating stations of each subsequent process can also be arranged in sequence along the conveying direction of the conveyor line body. The principles and beneficial effects are similar to the setting of multiple operating stations in the above-mentioned process, and will not be repeated later) can all be set accordingly. The corresponding setting in quantity here can be understood as the number of several being equal, or it can be understood that the numbers of any two of the several can be integer multiples of each other (the integer multiples here include 1 times, 2 times...N times, N is a positive integer) to ensure the maximization of the production capacity utilization of the battery cell film coating production loop.

[0213] Preferably, if Figure 3 As shown, the above-mentioned coating device b42 can also include a third hot melt portion b43, which is arranged downstream of the coating device b42. When the mover moves to the processing area of ​​the third hot melt portion b43, the third hot melt portion b43 can act on the top surface of the battery cell to be processed to hot-melt and fix the Mylar film to the top surface of the battery cell to be processed, so as to facilitate the fourth hot melt portion b44 described below to fix the Mylar film seam.

[0214] Similarly, the third hot melt part b43 can also be the above-mentioned hot melt machine.

[0215] Furthermore, if Figure 3As shown, the above-mentioned coating device b42 can also include a fourth hot melt portion b44, which is arranged downstream of the third hot melt portion b43. When the mover moves to the processing area of ​​the fourth hot melt portion b44, the fourth hot melt portion b44 can act on the seam side of the seam of the Mylar film of the battery cell to be processed, so as to respectively hot-melt and fix the two end portions of the Mylar film on the seam side, thereby realizing the separate fixation of the two ends of the Mylar film.

[0216] It should be noted that the seam of the above-mentioned Mylar film can be set on the side determined by the thickness direction and the length direction (i.e., the predetermined direction) of the battery cell to be processed, that is, the seam side is on the side determined by the thickness direction and the length direction (i.e., the predetermined direction) of the battery cell to be processed.

[0217] Preferably, if Figure 3 As shown, the fourth hot melt section b44 may include two groups of hot melt machines, which are respectively arranged on both sides of the width direction of the battery cell to be processed (that is, when the mover enters the operating station of the fourth hot melt section b44, the two groups of hot melt machines are respectively arranged on both sides of the mover in the conveying direction), so that the hot melt section can respectively act on the seam side of the battery cell to be processed and the other side of the battery cell to be processed that is opposite to the seam side, so as to further improve the connection stability between the Mylar film and the battery cell.

[0218] Preferably, if Figure 3 As shown, the fourth hot melt part b44 may include a gluing mechanism b45, which is arranged downstream of the fourth hot melt part b44, and the gluing mechanism b45 can attach insulating glue to the outer side of the seam of the Mylar film. It should be noted that the gluing mechanism b45 is a prior art device, and its gluing principle and setting structure are prior art in the field, which will not be described in detail here.

[0219] Similarly, if Figure 3 As shown, the third hot melt portion b43, the fourth hot melt portion b44 and the gluing mechanism b45 can all be arranged in the third section b113. In this way, the third hot melt portion b43 and the fourth hot melt portion b44 can occupy part of the space of the third section b113, so that the gluing mechanism b45 can be relatively far away from the Mylar film side plate feeding unit and the second polarity cover plate through-plate device b33, avoiding mutual interference among the feeding path of the gluing mechanism, the feeding path of the Mylar film side plate feeding unit and the feeding path of the second polarity cover plate feeding part b332.

[0220] Preferably, if Figure 3As shown, the number of the above-mentioned gluing mechanisms b45 can be multiple groups, and the multiple groups of gluing mechanisms b45 are arranged in sequence along the conveying direction of the conveying line body, and at least one of the multiple groups of gluing mechanisms b45 is a spare gluing mechanism b45. In this way, when at least one of the multiple groups of gluing mechanisms b45 needs to be replaced or repaired, it can be replaced by the spare gluing mechanism b45 to ensure that the battery cell film production loop line does not need to be shut down for glue replacement or repair.

[0221] Preferably, if Figure 3 As shown, the coating unit may further include a first visual inspection unit b46, which is disposed downstream of the glue sticking mechanism b45 and is used to inspect the sticking quality of the insulating glue.

[0222] Optionally, the first visual detection unit b46 may be an image acquisition device, such as a CCD camera.

[0223] Preferably, the first visual inspection unit b46 device can be mounted above the third section b113, so that the first time detection device can collect image information of the battery cell to be inspected by flying shooting, thereby realizing the detection of the attachment quality of the insulating glue.

[0224] Preferably, if Figure 3 As shown, the film coating unit may further include a second visual inspection portion b47, which is disposed downstream of the fourth hot melt portion b44 to detect the quality of the hot melt fixing point.

[0225] Optionally, not shown in the figure, the second visual inspection unit b47 may include multiple image acquisition devices, which respectively correspond to the top surface, bottom surface and two side surfaces of the battery cell to be processed, so as to respectively collect information on the hot melt fixing points of the top surface, bottom surface and two side surfaces of the battery cell to be processed.

[0226] In an embodiment, preferably, Figure 3 As shown, the above-mentioned unloading unit may include a first dust removal device b51, and the first dust removal device b51 is arranged downstream of the above-mentioned coating unit to perform dust removal on the battery cells to be processed that have completed the coating process.

[0227] Optionally, the first dust removal device b51 may be a negative pressure adsorption device to remove dust on the surface of the battery cell to be processed by negative pressure adsorption. However, it is not limited thereto, and as long as the dust on the surface of the battery cell to be processed can be removed, the first dust removal device b51 may also be other methods, such as electrostatic dust removal, mechanical sweeping, etc.

[0228] Preferably, if Figure 3As shown, the first dust removal device b51 can be arranged in the third section b113 so that the span of the third section b113 in the first direction F1 is equal to the sum of the spans of the first end and the second wire body b12 in the first direction F1, thereby improving the space utilization and layout rationality of the battery cell film production loop.

[0229] Preferably, if Figure 3 As shown, the above-mentioned unloading unit may also include a scanning and error-checking device b52, including at least one scanning unit, to identify the code of the battery cell to be processed and the code of the corresponding mover after the scanning and error-checking device b52, and then determine whether there is an error in the correspondence between the mover of the battery cell film production loop and the battery cell to be processed, and then determine whether there is a program error in the battery cell film production loop. Optionally, the scanning unit can be a barcode scanning gun or other barcode scanning and recognition equipment.

[0230] Preferably, if Figure 3 As shown, the above-mentioned unloading unit may further include a second unloading grabbing device b53. The above-mentioned conveying line body is provided with an unloading station. The second unloading grabbing device b53 is arranged at the unloading station to move qualified battery cells to be processed out of the conveying line body.

[0231] Alternatively, if Figure 3 As shown, the second unloading and grabbing device b53 may include an unloading robot b531, which is used to move qualified battery cells to be processed out of the conveyor line.

[0232] Preferably, if Figure 3 As shown, the second unloading grabbing device b53 may also include a removal chute b532, which may be arranged in a direction perpendicular to the conveying direction of the conveying line body, and the removal chute b532 may extend from the upper side of the conveying line body to the outside of the space enclosed by the conveying line body, so as to facilitate the unloading robot b531 to grab qualified battery cells to be processed and move them to the outside of the conveying line body.

[0233] Preferably, the second unloading grabbing device b53 can be docked with the shell penetration device c31 described below, so as to grab the qualified battery cells assembled on the second loop line III to the shell penetration device c31 for shell penetration assembly, and grab the battery cells that have completed the shell penetration process to the third loop line IV via the shell penetration gripper c32, thereby realizing the battery cell loading of the third loop line IV.

[0234] Optionally, not shown, the unloading unit may further include a good product transfer device, which is disposed on one side of the unloading station and is used to store and / or transfer qualified cells to be processed. Correspondingly, the good product transfer device may be disposed outside the space enclosed by the conveyor line, and the removal slide b532 may extend to the location of the good product transfer device to transfer the cells to be processed that are removed from the outside of the conveyor line to the good product transfer device.

[0235] Optionally, the good product transfer device may be a material rack, a conveying device or other storage and transportation device.

[0236] Preferably, if Figure 3 As shown, the above-mentioned unloading station and the second unloading grabbing device b53 are both arranged in the above-mentioned fourth section b114, so as to facilitate the flow of the cells to be processed in the battery cell film production line along the first direction F1, thereby facilitating the product transfer of the following battery production system.

[0237] Correspondingly, if Figure 3 As shown, the extension direction of the above-mentioned removal slide b532 can be the first direction F1.

[0238] Preferably, if Figure 3 As shown, the above-mentioned unloading unit may also include a defective product outflow station, which is arranged downstream of the unloading station. The defective product outflow station may include a defective product storage part b542 and a defective product gripper b541. The defective product gripper b541 can automatically transfer unqualified battery cells to be processed to the defective product storage part b542 to realize the unloading of defective products.

[0239] Similarly, the structure of the defective product storage section b542 can be similar to the above-mentioned good product transfer device and will not be repeated here.

[0240] Preferably, if Figure 3 As shown, the battery cell coating production loop line may also include a mover maintenance section, which is arranged on the downstream side of the unloading unit. The mover maintenance section may include a mover gripper b552 and a maintenance station b551, and the maintenance station b551 is arranged on one side of the conveyor line body. The mover gripper b552 can grab the mover and move it between the conveyor line body and the maintenance station b551 to repair the faulty mover under the conveyor line body.

[0241] Preferably, if Figure 3 As shown, the battery cell film production loop can also include a second dust removal device b6, which is arranged on the upstream side of the Mylar film side plate feeding unit to remove dust from the refluxed mover, thereby ensuring the cleanliness of the mover before use.

[0242] It should be noted that the dust removal structure and principle of the second dust removal device b6 are similar to those of the above-mentioned first dust removal device b51 and will not be repeated here.

[0243] The following will be Figure 1 and Figure 4 Taking the structure shown in the layout diagram of the third loop line IV as an example, an example of the above-mentioned third loop line IV is described.

[0244] Taking an example for ease of description, the magnetic levitation line of the third loop line IV is defined as a transmission line, the first transmission part of the third loop line IV is defined as a first transportation line, the second transmission part of the third loop line IV is defined as a second transportation line, the longitudinal transmission part is defined as a lifting and landing part, the loading line segment of the third loop line IV is defined as a second line segment c112, the unloading line segment of the third loop line IV is defined as a fourth line segment c114, the second transmission line segment of the third loop line IV is defined as a third line segment c113, the upstream segment of the first transmission part of the third loop line IV is defined as a fifth line segment c115, and the downstream segment of the first transmission part of the third loop line IV is defined as a first line segment c111.

[0245] like Figure 1 and Figure 3 As shown, the third loop IV can be a battery cell shell production loop, which includes a magnetic levitation transport line, a material feeding unit, a shell penetration unit, a first polarity press-fit welding unit and a second polarity cover assembly unit. The magnetic levitation transport line includes a transport line body and a mover, and the mover can move along the transport line body under the magnetic induction of the transport line body. The transport line body includes a first transport line, a second transport line c12 and a third lifting part c15. The transmission plane where the second transport line c12 is located is higher than the transmission plane where the first transport line is located. The two ends of the second transport line c12 are respectively connected to the two ends of the first transport line by the third lifting part c15, so that the transport line body is surrounded to form a closed loop, and a third channel c14 that can enter the closed loop is formed below the second transport line c12 of the transport line body. The material feeding unit, the shell penetration unit, the first polarity press-fit welding unit and the second polarity cover assembly unit are arranged in sequence along the transmission direction of the transport line body.

[0246] Correspondingly, if Figure 3 As shown, the first transport line may further include a rotating part (i.e., the movable member rotating part of the third loop line IV), and the first line segment c111 and the second line segment c112, the second line segment c112 and the third line segment c113, the third line segment c113 and the fourth line segment c114, and the fourth line segment c114 and the fifth line segment c115 may all be connected via the rotating part to realize the turning angle of the movable member between the line segments.

[0247] Preferably, if Figure 3As shown, the rotating part may include a first rotating platform c131, and the first line segment c111 and the second line segment c112, the second line segment c112 and the third line segment c113, and the third line segment c113 and the fourth line segment c114 may all be connected via the first rotating platform c131. The first rotating platform c131 can drive the mover to rotate at an angle of (n*360°+∠α), where n is an integer, and ∠α is the angle between the first direction F1 and the second direction F2, so as to realize the turning of the mover between the first line segment c111 and the second line segment c112, between the second line segment c112 and the third line segment c113, and between the third line segment c113 and the fourth line segment c114.

[0248] Preferably, if Figure 3 As shown, the rotating part may further include a second rotating table c132, which may be disposed between the first polarity press-fit welding unit and the second polarity cover assembly unit. The second rotating table c132 is capable of rotating the mover flowing to the second rotating table c132 by a predetermined angle, so that the positions of the two polarities of the battery cells to be processed on the mover are reversed, thereby realizing that the first polarity press-fit welding unit and the second polarity cover assembly unit are both disposed on the same side of the transport line. Specifically, the second rotating table c132 is capable of driving the mover to rotate by an angle of (2n+1)×180°.

[0249] Preferably, if Figure 3 As shown, the first polarity press-fit welding unit and the second polarity cover assembly unit can both be arranged on the inner side of the closed loop to further improve the space utilization of the battery cell shell production loop and save the space occupied by it.

[0250] Preferably, if Figure 3 As shown, the rotating part may also include a third rotating platform c133, and the fourth line segment c114 and the fifth line segment c115 may be connected via the third rotating platform c133. The third rotating platform c133 may drive the mover to rotate at an angle of [(2n+1)×180°+∠α], so that the mover can achieve an angle turn between the fourth line segment c114 and the fifth line segment c115, and at the same time, the mover can be turned over 180 degrees as a whole, so as to rotate the unloaded mover that has completed the unloading to the initial state, so that when the mover flows back to the material feeding unit, it can be used normally. In this way, the rotating part connecting the fourth line segment c114 and the fifth line segment c115 is used to realize the rotation of the mover, effectively saving the process, compressing the length of the battery cell shell production loop, and improving the efficiency of the battery cell shell production loop.

[0251] Optionally, the first rotating table c131, the second rotating table c132 and the third rotating table c133 may all be rotating disks driven by rotating motors.

[0252] Preferably, if Figure 4 As shown, the material loading unit may include a material storage part c23 and a material loading gripper c22. The material storage part c23 is used to store battery shells. The material loading gripper c22 can grab the battery shells in the material storage part c23 and place them on the mover in the second material loading station c21 to realize the loading of battery shells in the battery cell shell production line.

[0253] Preferably, if Figure 4 As shown, the material storage part c23 may include a material transmission part c231 and a loading part c232. The loading part c232 may be used to support the battery housing. The material transmission part c231 includes a material inlet c2311 and a material outlet c2312. The loading part c232 can flow into the material transmission part c231 through the material inlet c2311 and flow out of the material transmission part c231 through the material outlet c2312 to realize the circulation of the loading part c232.

[0254] Alternatively, if Figure 4 As shown, the material transmission part c231 may be a transmission device such as a conveyor belt, a conveyor roller or a magnetic suspension transmission device, so as to transmit the load part c232 from the third channel c14 to the second material loading station c21.

[0255] Optionally, the loading portion c232 may be a loading fixture or a tray for supporting and fixing the battery housing.

[0256] Preferably, if Figure 4 As shown, the material inlet c2311 and the material outlet c2312 may both be disposed on the third channel c14 to facilitate the inflow and outflow of the material carrying portion c232.

[0257] Furthermore, if Figure 4 The material loading unit may further include a conveying vehicle c24 for loading the load portion c232. The conveying vehicle c24 can pass through the third channel c14 to load the load portion c232 fully loaded with battery shells into the closed loop and to flow the empty load portion c232 out of the closed loop.

[0258] Preferably, if Figure 4 As shown, the third channel c14 may include a carriageway c141 extending along the second direction F2, and the transfer vehicle c24 may move on the carriageway c141.

[0259] Preferably, if Figure 4 As shown, the material inlet c2311 and the material outlet c2312 may both be disposed on the carriageway c141 to facilitate the transfer vehicle c24 to load / unload the load portion c232.

[0260] Preferably, if Figure 4 As shown, the third channel c14 may further include a sidewalk c142, which may be arranged side by side with the carriageway c141 below the second transport line c12 to facilitate the separation of people and vehicles, thereby ensuring the safety of personnel.

[0261] Optionally, the transfer vehicle c24 may be an AGV vehicle, a rail vehicle or other transport equipment.

[0262] Alternatively, if Figure 4 As shown, the material feeding gripper c22 can be a robot, and the material feeding gripper c22 can be arranged at one end of the material storage part c23 away from the third channel c14, and the material feeding gripper c22 is arranged between the material storage part c23 and the second material feeding station c21 to facilitate grabbing and feeding.

[0263] Preferably, if Figure 4 As shown, the material feeding unit may further include a first visual detection component c25, which is disposed downstream of the second material feeding station c21, for detecting the weld position of the battery housing on the mover, so as to identify whether the orientation of the battery housing placed on the mover is correct. Optionally, the first visual detection component c25 may be an image acquisition device, such as a CCD camera.

[0264] Preferably, if Figure 4 As shown, the material feeding unit may further include a deviation correction lever c26, which may be connected to the first visual unit and disposed downstream of the first visual unit, so as to correct the battery housing placed on the mover facing in the opposite direction according to the information fed back by the first visual detection member c25. Optionally, the deviation correction lever c26 may be a manipulator, an electric lever, etc.

[0265] Preferably, if Figure 4 As shown, the material feeding unit may further include a first dust removal device c28, which may be disposed downstream of the deviation correction lever c26 to perform dust removal on the interior of the battery housing on the mover.

[0266] Optionally, the first dust removal device c28 may include a purging part and an adsorption part arranged opposite to each other. When the moving body loaded with the battery shell flows to the first dust removal device c28, the purging part and the adsorption part can be docked with the two ports of the battery shell respectively, thereby effectively improving the dust removal efficiency and dust removal quality of the first dust removal device c28, realizing dust removal of the internal space of the battery shell, and thus ensuring the cleanliness of the battery shell.

[0267] Optionally, the purge part may be an air outlet of a positive pressure device, which may be a positive pressure air pump, a fan, a blower, etc. Correspondingly, the adsorption part may be an air inlet of a negative pressure device, which may be a negative pressure air pump, an air compressor, etc.

[0268] In an embodiment, Figure 4 and Figure 2 As shown, the shell-piercing unit may include a shell-piercing part and a shell-piercing gripper c32. The shell-piercing part is arranged on one side of the conveying line body, and is used to insert the battery cell to be processed into the battery shell. The shell-piercing gripper c32 can grab the battery shell on the mover onto the shell-piercing part, and grab the battery cell to be processed after the shell-piercing process is completed by the shell-piercing part to the mover. In this way, the battery cell shell-entering production loop line is loaded with cells, and the battery cell shell-entering production loop line is assembled while the battery cell shell-entering production loop line is assembled, which effectively saves the process of the battery cell shell-entering production loop line and improves the production efficiency of the battery cell shell-entering production loop line.

[0269] Preferably, if Figure 4 As shown, the shell penetration unit may include multiple shell penetration parts and multiple shell penetration grippers c32. The multiple shell penetration parts are arranged in sequence along the transmission direction of the transport line body, and each shell penetration part has at least one shell penetration gripper c32 arranged corresponding to it, so as to realize the shelling and assembly process of multiple groups of battery cells to be processed at the same time, effectively improving the production capacity of the battery cell shelling production line.

[0270] like Figure 4 An example is shown in which the shell penetration machine group includes three shell penetration parts, each of which has a shell penetration gripper c32 corresponding to it. However, it is not limited to this. The number of shell penetration parts can be adaptively adjusted according to the size of the layout site, production rhythm, etc. For example, the number of shell penetration parts can also be 1, 2, 4, 5...m (m is a positive integer).

[0271] Furthermore, if Figure 4 and Figure 2 As shown, the shell penetration part may further include a plurality of shell penetration devices c31, and the plurality of shell penetration devices c31 may be arranged in sequence along the transmission direction of the transport line body. The shell penetration gripper c32 may be capable of reciprocating motion in the transmission direction of the transport line body, so that the shell penetration gripper c32 may be capable of docking one by one with the plurality of shell penetration devices c31 in the corresponding shell penetration part respectively.

[0272] like Figure 4 As shown, taking the above-mentioned shell penetration part including two shell penetration devices c31 as an example, when the shell penetration gripper c32 completes the two-way loading and unloading of one shell penetration device c31 in the shell penetration part (the two-way loading and unloading here refers to the process in which the shell penetration gripper c32 grabs the battery shell on the mover to the shell penetration part, and grabs the battery cell to be processed after the shell penetration part completes the shell penetration process to the mover), the shell penetration gripper c32 can directly move to dock with the other shell penetration device c31 in the shell penetration part, and execute the two-way loading and unloading of the other shell penetration device c31. In this way, the mobility of the shell penetration gripper c32 is fully utilized, and the shell penetration assembly time of one shell penetration device c31 in the shell penetration part is executed to execute the two-way loading and unloading of the other shell penetration device c31 in the shell penetration part, which effectively improves the production capacity utilization rate of the shell penetration gripper c32 and the shell penetration part, and improves the production capacity of the shell penetration assembly process of the battery cell shell production loop.

[0273] Optionally, the shell penetration gripper c32 may include a manipulator and a slide rail that are slidably connected to each other. The manipulator may be used for bidirectional loading and unloading between the shell penetration part and the mover. The manipulator may slide along the slide rail to achieve docking of the manipulator with different shell penetration devices c31.

[0274] It should be noted that the above-mentioned shell penetration device c31 is an existing device in the art, and its structure and principle are not described in detail here.

[0275] However, it is not limited to this. The number of shell piercing devices c31 included in the above-mentioned shell piercing part can be adaptively adjusted according to the shell piercing rhythm of the shell piercing device c31 and the rhythm of bidirectional loading and unloading of the shell piercing gripper c32. For example, the number of shell piercing devices c31 included in the above-mentioned shell piercing part can also be 3, 4, 5...k (k is a positive integer).

[0276] Preferably, if Figure 4 As shown, the shell-piercing unit may include a second dust removal device c33, which may be disposed downstream of the shell-piercing portion to remove dust from the battery cells to be processed after the shell-piercing process is completed. Similarly, the dust removal principle of the second dust removal device c33 is similar to that of the fourth dust removal device c27, which will not be described in detail here.

[0277] Preferably, if Figure 4 As shown, the shell penetration unit may include a first defective product outflow portion c161, which may be disposed at a downstream position of the above-mentioned shell penetration portion to flow out defective products generated in an upstream process of the transport line body located at the first defective product outflow portion c161 from the transport line body.

[0278] Optionally, the first defective product outflow portion c161 may include a robot and a defective product temporary storage warehouse, wherein the robot is used to grab the defective products on the mover and place them on the defective product temporary storage warehouse to realize the defective product outflow transportation line.

[0279] Preferably, if Figure 4 As shown, the above-mentioned first polarity press-fitting and welding unit may include a pre-welding gripper c41, a press-fitting part c42 and a welding part c43. The press-fitting part c42 is arranged on one side of the conveying line body, and the welding part c43 is arranged at the end of the press-fitting part c42 facing away from the conveying line body, so as to weld and fix the cover plate on the first polarity side of the battery cell to be processed to the battery shell. The pre-welding gripper c41 can grab the battery cell to be processed on the mover to the press-fitting part c42, and grab the battery cell to be processed on the press-fitting part c42 that has completed the welding process to the mover. In this way, the battery cell to be processed that is transmitted to the press-fitting part c42 can be grabbed to the press-fitting part c42 via the pre-welding gripper c41. After the press-fitting action is performed, the cover plate on the first polarity side of the battery cell to be processed is welded and fixed to the battery shell via the welding part c43.

[0280] Optionally, the welding portion c43 can spot-weld the cover plate and the battery shell on the first polarity side of the battery cell to be processed to improve the welding accuracy and welding yield of the cover plate and the battery shell on the first polarity side of the battery cell to be processed.

[0281] Preferably, if Figure 4 As shown, the above-mentioned first polarity press-fitting welding unit may include multiple pre-welding grippers c41, multiple press-fitting parts c42 and multiple welding parts c43. The multiple press-fitting parts c42 are arranged in sequence along the conveying direction of the conveying line body, and each press-fitting part c42 has at least one pre-welding gripper c41 and at least one welding part c43 arranged correspondingly thereto, so as to realize the battery cell shell production loop line and simultaneously perform spot welding and fixing actions on the cover plate and the battery shell on the first polarity side of multiple groups of batteries to be processed, so as to improve the production capacity of the battery cell shell production loop line.

[0282] Preferably, if Figure 4 As shown, the above-mentioned pressing part c42 includes a plurality of pressing devices, and the plurality of pressing devices are arranged in sequence along the transmission direction of the transport line body. The pre-welding gripper c41 and the welding part c43 can both make reciprocating motions in the transmission direction of the transport line body, so that the pre-welding gripper c41 and the welding part c43 can respectively dock with the pressing devices in their corresponding pressing part c42 one by one. The movable setting of the pre-welding gripper c41 and the welding part c43 is similar to the above-mentioned shell-piercing gripper c32 and will not be repeated. In this way, it is effectively avoided that the pre-welding gripper c41 and the welding part c43 wait for the pressing part c42 to perform the pressing action, which causes the phenomenon of idle production capacity of either the pre-welding gripper c41 or the welding part c43, thereby effectively improving the capacity utilization rate of the battery cell shell production line.

[0283] Preferably, the welding part c43 may include a welding device and a slide rail that are slidably connected to each other. Correspondingly, the pre-welding gripper c41 may include a manipulator and a slide rail that are slidably connected to each other, so that both the pre-welding gripper c41 and the welding part c43 can reciprocate in the transmission direction of the transport line.

[0284] Optionally, the welding equipment mentioned above may be a laser welding machine.

[0285] Preferably, if Figure 4 As shown, the first polarity press-fit welding unit may further include a second visual inspection component c44, which is disposed downstream of the press-fit portion c42 to inspect the welding quality of the cover plate and the battery shell on the first polarity side of the battery cell to be processed.

[0286] In an embodiment, Figure 4 As shown, the second polarity cover plate assembly unit may include a third visual inspection component c51, which may be disposed at a downstream position of the first polarity press-fit welding unit (i.e., the downstream position of the second visual inspection component c44), and is used to detect the position of the second polarity ear of the battery cell to be processed.

[0287] Correspondingly, if Figure 4 As shown, a second rotating platform c132 can be arranged between the second visual inspection component c44 and the third visual inspection component c51, so that the mover flowing into the second rotating platform c132 can rotate 180° to change the position of the positive and negative electrodes of the battery cell to be processed, thereby realizing that the second visual inspection component c44 and the third visual inspection component c51 are both arranged on the same side of the closed loop. Figure 4 As shown, the second visual inspection component c44 and the third visual inspection component c51 are both arranged on the inner side of the closed loop, so as to improve the space utilization rate of the battery cell shell production loop.

[0288] Optionally, the second visual detection component c44 and the third visual detection component c51 may both include an image acquisition device, such as a CCD camera.

[0289] Preferably, the above-mentioned third visual inspection component c51 may also include a pole lug shaping rod, which can be communicatively connected to the image acquisition device of the third visual inspection component c51. When the second polarity pole lug image information collected by the image acquisition device of the third visual inspection component c51 is bent and wrinkled, causing the pole lug position to shift, the pole lug shaping rod can correct the position of the second polarity pole lug to ensure the operating accuracy of the downstream process and improve the yield rate.

[0290] Optionally, the tab shaping lever may include a linear drive member and a toggle member that are transmission-connected to each other, and the driving direction of the linear drive member may be perpendicular to the driving direction of the transport line body.

[0291] Preferably, if Figure 4 As shown, the second polarity cover plate assembly unit may further include a second polarity cover plate storage portion c52. The second polarity cover plate storage portion c52 may be disposed on one side of the transport line body for storing the second polarity cover plates.

[0292] Preferably, if Figure 4 As shown, the second polarity cover plate storage part c52 can be arranged inside the above-mentioned closed loop line, so as to improve the space utilization rate of the battery cell shell production loop line. The above-mentioned third channel c14 can be connected to the location of the second polarity cover plate storage part c52, so as to facilitate the loading of the second polarity cover plate. Optionally, the above-mentioned second polarity cover plate storage part c52 can be a storage rack or other device capable of storing the second polarity cover plate.

[0293] Preferably, if Figure 4 As shown, the second polarity cover plate assembly unit may further include a second polarity cover plate loading gripper c53, which is used to grab the second polarity cover plate on the second polarity cover plate storage portion c52 to the corresponding mover to achieve loading of the second polarity cover plate.

[0294] Preferably, if Figure 4 As shown, the second polarity cover plate assembly unit may further include a second polarity cover plate welding portion c54, which may be disposed at a downstream position of the second polarity cover plate feeding gripper c53, and is used to weld and fix the second polarity pole ear of the battery cell to be processed and the second polarity cover plate. Optionally, the second polarity cover plate welding portion c54 may be a laser welding device to ensure the welding accuracy and welding efficiency of the second polarity pole ear of the battery cell to be processed and the second polarity cover plate.

[0295] Preferably, if Figure 4 As shown, the second polarity cover plate assembly unit may further include a third dust removal device c55, which may be disposed downstream of the second polarity cover plate welding portion c54 to remove welding dust from the battery cells to be processed.

[0296] Similarly, the third dust removal device c55 can be a negative pressure adsorption device to remove dust on the surface of the battery cell to be processed by negative pressure adsorption. However, it is not limited to this. As long as the dust on the mover can be removed, the third dust removal device c55 can also be other dust removal devices, such as electrostatic dust removal equipment, mechanical cleaning equipment, etc.

[0297] Preferably, if Figure 4As shown, the second polarity cover plate assembly unit may further include a profiler detection unit c56, which may be disposed between the second polarity cover plate welding unit c54 and the following glue sticking unit c57, and is used to detect the welding quality of both the second polarity tab of the battery cell to be processed and the second polarity cover plate.

[0298] Preferably, if Figure 4 As shown, the profilometer detection part c56 can be arranged downstream of the third dust removal device c55 to prevent welding powder from interfering with the detection result of the profilometer detection part c56. Optionally, the profilometer detection part c56 can include a profilometer.

[0299] Preferably, if Figure 4 As shown, the second polarity cover plate assembly unit may further include a gluing portion c57, which may be disposed downstream of the second polarity cover plate welding portion c54, for gluing the second polarity tabs of the battery cell to be processed and the welds of the second polarity cover plate.

[0300] Preferably, if Figure 4 As shown, the battery cell shelling production loop may include multiple groups of glue parts c57, and the multiple groups of glue parts c57 are arranged in sequence along the conveying direction of the conveying line body. In this way, one group of glue parts c57 in the multiple groups of glue parts c57 can be used as a spare. When other groups of glue parts c57 in the multiple groups of glue parts c57 need to stop (for example, maintenance or loading and changing glue, etc.), the spare glue part c57 can replace the glue part c57 that needs to be stopped, so that the battery cell shelling production loop can operate normally.

[0301] Preferably, if Figure 4 As shown, the above-mentioned gluing part c57 may include multiple gluing mechanisms, and the multiple gluing mechanisms may be sequentially arranged along the conveying direction of the conveying line body, so that the battery cell shell production loop can simultaneously perform gluing actions on multiple cells to be processed, so as to improve the production efficiency of the battery cell shell production loop. It should be noted that the gluing mechanism is a prior art device, and its gluing principle and setting structure are prior art in the field, which will not be repeated here.

[0302] Preferably, if Figure 4 As shown, the second polarity cover assembly unit may further include a fourth visual inspection component c58, which may be disposed downstream of the adhesive bonding portion c57 to inspect the quality of the process completed at the adhesive bonding portion c57. Similarly, the fourth visual inspection component c58 may also include an image acquisition device, such as a CCD camera.

[0303] Preferably, if Figure 4As shown, the second polarity cover plate assembly unit may further include a second polarity cover plate bending portion c59, which may be disposed at a downstream position of the above-mentioned adhesive portion c57, and is used to bend the second polarity tab, so as to cover the second polarity cover plate at the end of the second polarity end of the battery housing. It should be noted that the above-mentioned second polarity cover plate bending portion is an existing tab bending device, and its structure and bending principle are both existing technologies in the field, and will not be repeated here.

[0304] It should be noted that when the second polarity cover plate loading gripper c53 grabs the second polarity cover plate onto the mover, the second polarity cover plate is laid flat on the side where the second polarity pole ear of the battery cell to be processed is located, so as to facilitate the welding operation of the second polarity pole ear of the battery cell to be processed and the second polarity cover plate. The second polarity cover plate bending portion c59 bends the second polarity pole ear by 90°, so that the second polarity cover plate rotates 90° accordingly, thereby enabling the second polarity cover plate to cover the port at the end of the second polarity end of the battery housing.

[0305] Preferably, if Figure 4 As shown, the second polarity cover plate assembly unit may further include a second polarity cover plate pre-pressing portion c50, which is disposed at a downstream position of the second polarity cover plate bending portion c59. The second polarity cover plate pre-pressing portion c50 can apply a force to the second polarity cover plate directed toward the first polarity side of the battery to be processed, so that at least a portion of the second polarity cover plate is pressed into the battery housing (i.e., at least a portion of the second polarity cover plate is pressed into the port at the end of the battery housing where the second polarity is located), thereby achieving preliminary fixation between the second polarity cover plate and the battery housing.

[0306] Preferably, if Figure 4 As shown, the second polarity cover plate assembly unit may further include a code scanning unit c61, which is disposed between the second polarity cover plate pre-pressing unit c50 and the third unloading station c62 described below, for respectively identifying the codes of the mover and the battery cell to be processed, and then determining whether the process of the battery cell shell production line is disordered. Optionally, the code scanning unit c61 may include a code scanning device such as a code scanning gun and a scanner.

[0307] Preferably, if Figure 4 As shown, a third unloading station c62 is provided on the above-mentioned transport line body, and the third unloading station c62 is arranged at a downstream position of the second polarity cover plate pre-pressing part c50.

[0308] Preferably, not shown in the figure, the second polarity cover plate assembly unit may also include a unloading gripper, which is arranged at a downstream position of the second polarity cover plate pre-pressing part c50 and at one side of the third unloading station c62, and is used to move the battery cells to be processed that have completed the second polarity cover plate pre-pressing process and are qualified products on the mover entering the third unloading station c62 out of the transportation line body, thereby realizing the unloading of qualified products from the battery cell shell production line.

[0309] Alternatively, if Figure 1 As shown, the unloading gripper may also be a rotating manipulator, which may be disposed between the third loop line IV and the fourth loop line V, and is used to grab qualified products assembled on the third loop line IV to the fourth loop line V, so as to realize the loading of battery cells on the fourth loop line V.

[0310] Preferably, if Figure 4 As shown, the second polarity cover assembly unit may further include a second defective product outflow portion c162, which may be disposed at a downstream position of the unloading gripper to discharge defective products generated in an upstream process of the transport line body located at the second defective product outflow portion c162 out of the transport line body. Similarly, the configuration structure and configuration principle of the second defective product outflow portion c162 are similar to those of the first defective product outflow portion c161, and will not be described in detail herein.

[0311] Preferably, if Figure 4 As shown, the second polarity cover plate assembly unit may further include a first mover maintenance device c171, which is disposed at a downstream position of the unloading gripper and is capable of moving the mover out of the transport line body to facilitate maintenance of the mover.

[0312] Preferably, the above-mentioned first mover maintenance device c171 may include a first mover gripper and a first maintenance station. The first maintenance station may be arranged on one side of the above-mentioned transport line body. The first mover gripper may be a manipulator for grabbing the mover that needs maintenance from the transport line body to the maintenance station.

[0313] Preferably, if Figure 4 As shown, the battery cell shelling production line can also include a second mover maintenance device c172, which can be arranged between the second rotating table c132 and the third visual inspection component c51. In this way, a mover maintenance section is added to the middle section of the battery cell shelling production line, so that the faulty mover can be discharged from the transport line in time, thereby ensuring the smoothness of the transport line.

[0314] Similarly, the second mover maintenance device c172 may include a second mover gripper and a second maintenance station. The setting structure and principle of the second mover maintenance device c172 are similar to those of the first mover maintenance device c171, and are not repeated here.

[0315] Preferably, if Figure 4 As shown, both the second defective product outflow portion c162 and the first mover maintenance device c171 can be arranged on the fifth line segment c115 to avoid interfering with the unloading of materials by the unloading gripper.

[0316] The following will be Figure 1 and Figure 5 Taking the structure shown in the layout diagram of the third loop line IV as an example, an example of the fourth loop line V mentioned above is described.

[0317] Taking an example for ease of description, the magnetic levitation line body of the fourth loop line V is defined as a transmission line body, the first transmission part of the fourth loop line V is defined as a first transmission line, the second transmission part of the fourth loop line V is defined as a second transmission line, the longitudinal transmission part is defined as a lifting part, the loading line segment of the fourth loop line V is defined as a second segment line d112, the unloading line segment of the third loop line IV is defined as a fourth segment line d114, the second transmission line segment of the fourth loop line V is defined as a third segment line d113, the upstream segment of the first transmission part of the fourth loop line V located at the second transmission part is defined as a fifth segment line d115, and the downstream segment of the first transmission part of the fourth loop line V located at the second transmission part is defined as a first segment line d111.

[0318] like Figure 1 and Figure 3 As shown, the third loop IV can be a battery cell shell production loop, which includes a magnetic levitation transport line, a first polarity cover plate welding unit d8 and a second polarity cover plate welding unit d8. The magnetic levitation transport line includes a transmission line body and a mover, and the mover can move along the transmission line body under the magnetic induction of the transmission line body. The transmission line body includes a first transmission line, a second transmission line d12 and a fourth lifting part d15. The transmission plane where the second transmission line d12 is located is higher than the transmission plane where the first transmission line is located. The two ends of the second transmission line d12 are respectively connected to the two ends of the first transmission line by the fourth lifting part d15, so that the transmission line body is surrounded to form a closed loop, and a fourth channel d14 that can enter the closed loop is formed below the second transmission line d12 of the transmission line body. The first polarity cover plate welding unit d8 and the second polarity cover plate welding unit d8 are arranged in sequence along the transmission direction of the transmission line body.

[0319] In an embodiment, Figure 1 and Figure 5As shown, the battery cover plate welding loop line can also include a welding unit d8, which can include a grabbing part d81, a material preparation part and a welding processing part d83. The material preparation part is arranged on one side of the above-mentioned transmission line body, the grabbing part d81 is arranged between the material preparation part and the transmission line body, and the welding processing part d83 is arranged at the end of the material preparation part facing away from the transmission line body. When the mover carries the battery cell to be processed to align with the material preparation part, the grabbing part d81 can grab the battery cell to be processed to the material preparation part, and can grab the product that has completed the welding process on the material preparation part to the corresponding mover. The material preparation part can detect and adjust the battery cell to be processed, and can move the battery cell to be processed that has passed the detection and / or adjustment to the welding position for welding by the welding processing part d83.

[0320] Preferably, if Figure 1 and Figure 5 As shown, the welding unit d8 includes multiple groups of material preparation parts, multiple grabbing parts d81 and multiple welding processing parts d83. The multiple groups of material preparation parts are arranged in sequence along the transmission direction of the transmission line body. Each group of material preparation parts has at least one grabbing part d81 and at least one welding processing part d83 corresponding to it, so that the battery cover welding loop line can perform welding actions on multiple groups of batteries to be processed at the same time, so as to improve the production capacity of the battery cover welding loop line.

[0321] Preferably, if Figure 1 and Figure 5 As shown, the above-mentioned material preparation section may include a plurality of material preparation devices d82, and the plurality of material preparation devices d82 are arranged in sequence along the transmission direction of the transmission line body. The grasping section d81 and the welding processing section d83 can both reciprocate between the plurality of material preparation devices d82 of the corresponding material preparation section, so that the grasping section d81 and the welding processing section d83 can respectively dock with the material preparation devices d82 in the corresponding material preparation section one by one. In this way, it is effectively avoided that the grasping section d81 and the welding processing section d83 wait for the material preparation section to perform the material preparation action, which causes the phenomenon of idle production capacity of either the grasping section d81 or the welding processing section d83, thereby effectively improving the capacity utilization rate of the battery cell cover plate welding loop line.

[0322] Optionally, the welding processing part d83 may include a welding device and a welding slide that are slidably connected to each other, the welding slide is parallel to the portion of the transmission line body opposite to the material preparation part, and in the transmission direction of the transmission line body, the span of the welding slide is greater than the span of the material preparation part corresponding to the welding processing part d83, and the welding device can move along the welding slide to realize the docking of the welding processing part d83 with each material preparation device d82 of the material preparation part.

[0323] Similarly, the grabbing part d81 may also include a grabbing robot and a grabbing slideway that are slidably connected to each other. The configuration of the grabbing slideway and the grabbing robot is similar to that of the welding slideway and the welding device, and will not be described in detail.

[0324] In an embodiment, Figure 1 and Figure 5 As shown, the second polarity cover plate welding unit d8 may include a spot welding unit d31 and a first peripheral welding unit d33, wherein the spot welding unit d31 may be arranged at a downstream position of the loading station d2, and is used to spot weld and fix the second polarity cover plate of the battery cell to be processed and the battery shell; the first peripheral welding unit d33 may be arranged at a downstream position of the spot welding unit d31, and is used to weld the connection gap between the second polarity cover plate of the battery cell to be processed and the battery shell. Specifically, the second polarity cover plate and the battery shell are first spot welded and fixed by the spot welding unit d31, and then the connection gap between the second polarity cover plate and the battery shell is filled by the first peripheral welding unit d33, so that the second polarity cover plate and the battery shell are sealed and connected. In this way, the welding process of first spot welding and then peripheral welding to fill the gap can effectively improve the welding accuracy of the second polarity cover plate and the battery shell, thereby improving the welding yield of the second polarity cover plate and the battery shell.

[0325] Preferably, if Figure 1 and Figure 5 As shown, the spot welding unit d31 may be the above-mentioned welding unit d8. In other words, the spot welding unit d31 may also include the above-mentioned material preparation part, the grasping part d81 and the welding processing part d83.

[0326] like Figure 1 and Figure 5 As shown, the figure shows an example in which the spot welding group d31 includes three groups of the above-mentioned material preparation parts, and each material preparation part is provided with three material preparation devices d82 and four material preparation devices d82. However, it is not limited to this, and the number of groups of material preparation parts included in the spot welding group d31 and the number of material preparation devices d82 included in each group of material preparation parts can be adaptively adjusted according to the above-mentioned installation site and production line production rhythm.

[0327] Preferably, the material preparation device d82 included in the spot welding group d31 may include a pressing device, a visual inspection device and a conveying device. When the battery cell to be processed is grasped by the grasping part d81 to the material preparation device d82 of the spot welding group d31, the pressing device can act on the second polarity cover plate to further press the second polarity cover plate into the battery shell, and the visual inspection device can detect the relative positions of the second polarity cover plate and the battery shell until the second polarity cover plate and the battery shell are pressed into place. The conveying device transfers the battery cell to be processed that is pressed into place to the welding position of the material preparation device d82 for welding by the welding processing part d83.

[0328] It should be noted that the above-mentioned pressing equipment, visual inspection equipment (eg, CCD camera) and conveying equipment (eg, conveyor belt, robot) are all existing technologies in this field and will not be described in detail here.

[0329] Optionally, the welding processing part d83 may be a laser welding machine to ensure welding accuracy and welding efficiency.

[0330] Based on the characteristics described above, Figure 1 and Figure 5 The spot welding unit d31 shown in the figure is described as an example. Figure 5 The spot welding unit d31 shown includes 11 material preparation devices, and the working principle of the spot welding unit d31 is described in detail.

[0331] The 11 material preparation devices d82 included in the spot welding group d31 are numbered 1#, 2#, 3#, 4#, 5#, 6#, 7#, 8#, 9#, 10#, and 11# in sequence according to the transmission direction of the transmission line (among which, 1#, 2#, 3#, and 4# belong to the first group of material preparation parts; 5#, 6#, 7#, and 8# belong to the second group of material preparation parts; 9#, 10#, and 11# belong to the third group of material preparation parts).

[0332] For loading and unloading of the grabbing part d81, after the mover is loaded with the battery cells to be processed from the loading station d2, 11 groups of movers are controlled to be aligned with 11 preparation devices d82 at the same time. At this time, the grabbing parts d81 corresponding to each group of preparation parts are respectively aligned with the 1# preparation device, the 5# preparation device and the 9# preparation device, to complete the simultaneous bidirectional loading and unloading of the 1# preparation device, the 5# preparation device and the 9# preparation device (the bidirectional loading and unloading here refers to the process in which the grabbing part d81 grabs the battery cells to be processed on the mover to the preparation part, and grabs the battery cells to be processed that have completed the welding process of the preparation part to the mover), and then, the simultaneous bidirectional loading and unloading of the 2# preparation device, the 6# preparation device and the 10# preparation device are completed in sequence; the simultaneous bidirectional loading and unloading of the 3# preparation device, the 7# preparation device and the 11# preparation device; the simultaneous bidirectional loading and unloading of the 4# preparation device, the 8# preparation device and the 9# preparation device... the above loading and unloading process is repeated.

[0333] Similarly, for the welding process of the welding processing part d83, similar to the loading and unloading process of the above-mentioned grabbing part d81, the welding of the welding processing part d83 corresponding to each group of preparation parts is still carried out in the order of 1# preparation device, 5# preparation device and 9# preparation device; 2# preparation device, 6# preparation device and 10# preparation device; 3# preparation device, 7# preparation device and 11# preparation device; 4# preparation device, 8# preparation device and 9# preparation device...

[0334] In this way, the production capacity and utilization efficiency of both the welding processing part d83 and the grabbing part d81 are effectively improved, thereby improving the production capacity of the battery cover welding loop line.

[0335] Similarly, preferably, Figure 5As shown, the first peripheral welding unit d33 may also be the welding unit d8. In other words, the first peripheral welding unit d33 may also include the material preparation part, the grabbing part d81 and the welding processing part d83.

[0336] like Figure 5 As shown in the figure, the first peripheral welding machine group d33 includes two groups of the above-mentioned material preparation parts, and each material preparation part is provided with four material preparation devices d82. However, it is not limited thereto, and the number of groups of material preparation parts included in the first peripheral welding machine group d33 and the number of material preparation devices d82 included in each group of material preparation parts can be adaptively adjusted according to the above-mentioned installation site and production line production rhythm.

[0337] Preferably, the material preparation device d82 included in the first peripheral welding group d33 may also include the above-mentioned visual inspection equipment and the above-mentioned conveying equipment. When the battery cell to be processed is grasped by the grasping part d81 to the material preparation device d82 of the first peripheral welding group d33, the visual inspection equipment can detect the spot welding positions of both the second polarity cover plate and the battery shell, and the conveying equipment can transfer the battery cell to be processed that has completed the inspection to the welding position of the material preparation device d82 for welding by the welding processing part d83.

[0338] Preferably, if Figure 5 As shown, the second polarity cover plate welding unit d8 may further include a first visual monitoring unit d32, which is disposed between the spot welding unit d31 and the first peripheral welding unit d33 to detect the welding quality of the spot welding unit d31.

[0339] Optionally, the first visual monitoring unit d32 can be communicatively connected with the downstream processing equipment described below. When the first visual monitoring unit d32 finds defective products, the first visual monitoring unit d32 can promptly notify the downstream processing equipment to prevent the downstream processing equipment from continuing to process the defective products, thereby effectively avoiding the waste of production capacity of the battery cover welding loop.

[0340] Optionally, the first visual monitoring unit d32 may include an image acquisition device, such as a CCD camera.

[0341] It should be noted that the upstream and downstream referred to in this article are based on the transmission direction of the transmission line.

[0342] In an embodiment, Figure 1 and Figure 5 As shown, the first polarity cover plate welding unit d8 may include a second peripheral welding unit d41, which may be disposed at a downstream position of the first peripheral welding unit d33 to weld and fill the connection gap between the first polarity cover plate of the battery cell to be processed and the battery shell.

[0343] It should be noted that, in the above-mentioned loading station d2, the battery cell to be processed that is grabbed and loaded is a battery cell whose first polarity cover plate and the battery shell have been spot-welded and fixed.

[0344] Preferably, if Figure 1 and Figure 5 As shown, the second peripheral welding unit d41 may also be the welding unit d8, and its arrangement and setting are similar to those of the first peripheral welding unit d33, which will not be described in detail here.

[0345] Preferably, if Figure 5 As shown, the first polarity cover plate welding unit d8 further includes a second visual monitoring unit d42, which is disposed between the second peripheral welding unit d41 and the pressure roller shaping unit for detecting the welding quality of the second peripheral welding unit d41.

[0346] It should be noted that the control method and setting principle of the second visual monitoring unit d42 are similar to those of the first visual monitoring unit d32, which will not be repeated here.

[0347] Preferably, if Figure 5 As shown, the first polarity cover welding unit d8 may also include a roller shaping unit to smooth the weld between the first pole cover and the battery shell and the weld between the second pole cover and the battery shell, thereby improving the appearance neatness and yield rate of the battery cover welding loop.

[0348] Preferably, the pressing roller shaping unit may include a pressing roller portion d43, which can act on the welds between the second polarity cover plate and the battery housing and / or the welds between the first polarity cover plate and the battery housing to smooth the welds. Optionally, the pressing roller portion d43 may be an existing welding stamping roller pressing device (for example, a battery core welding stamping roller pressing device described in Chinese patent document CN218611123U).

[0349] Preferably, if Figure 5 As shown, the roller shaping unit may further include a first dust removal section d44, which may be disposed downstream of the roller section d43, for removing dust remaining on the battery cells to be processed after shaping by the roller section d43, so as to avoid the dust affecting the following processes.

[0350] Optionally, the first dust removal part d44 can be a negative pressure adsorption device to remove dust on the surface of the battery cell to be processed by negative pressure adsorption. However, it is not limited to this. As long as the dust on the mover can be removed, the first dust removal part d44 can also be other dust removal equipment, such as electrostatic dust removal equipment, mechanical cleaning equipment, etc.

[0351] Preferably, if Figure 5As shown, the above-mentioned first polarity cover plate welding unit d8 can also include a profiler monitoring unit d45, which can be arranged downstream of the roller shaping unit to detect the weld quality between the second polarity cover plate and the battery shell and the weld quality between the first polarity cover plate and the battery shell.

[0352] Preferably, if Figure 5 As shown, the above-mentioned profiler monitoring unit d45 may include a first profiler d451 and a second profiler d452 which are sequentially arranged along the transmission direction of the transmission line. Among them, the first profiler d451 is used to detect the portion of the weld between the second polarity cover plate and the battery shell and the weld between the first polarity cover plate and the battery shell which is parallel to the width direction of the battery cell to be processed; the second profiler d452 is used to detect the portion of the weld between the second polarity cover plate and the battery shell and the weld between the first polarity cover plate and the battery shell which is parallel to the thickness direction of the battery cell to be processed. In this way, the profiler monitoring unit d45 can effectively increase the transmission speed of the magnetic suspension transport line, and realize that the profiler monitoring unit d45 can complete the detection work during the transmission of the mover, so as to further improve the transmission efficiency of the battery cover welding loop line.

[0353] Preferably, if Figure 5 As shown, the first polarity cover plate welding unit d8 can also include a blanking unit, which can be arranged at a downstream position of the above-mentioned profiler monitoring part d45, and can be arranged on one side of the above-mentioned fourth blanking station d5 to move the assembled qualified battery cells out of the transmission line body.

[0354] Optionally, not shown in the figures, the unloading unit may include the unloading gripper mentioned above.

[0355] Optionally, not shown in the figure, the unloading unit may further include a material buffer rack for buffering qualified battery cells removed from the transmission line body.

[0356] In an embodiment, preferably, Figure 5 As shown, the battery cover welding loop can also include a second dust removal unit d9, which is arranged on the first segment line d111 and is used to remove dust from the unloaded mover refluxed by the second transmission line d12 to ensure the cleanliness of the mover. It should be noted that the dust removal principle and setting method of the second dust removal unit d9 are similar to those of the first dust removal unit d44, and will not be repeated here.

[0357] Preferably, if Figure 5 As shown, the battery cover welding loop line may further include a defective product discharge portion d7, which may be disposed on the fifth segment line d115 and downstream of the fourth unloading station d5, for discharging defective products from the transmission line body.

[0358] Specifically, the defective product discharge part d7 may include a defective product gripper and a defective product buffer device, wherein the defective product gripper can grab defective products on the mover and transfer them to the defective product buffer device. The defective product buffer device may be a material rack, a conveying device, and the like.

[0359] Preferably, if Figure 5 As shown, the battery cover welding loop line can also include a first mover maintenance part d61, which is arranged on the fifth segment line d115 and located downstream of the fourth unloading station d5, and is used to move the mover that needs maintenance out of the transmission line body to realize off-loop maintenance of the mover, so as to ensure the smooth operation of the battery cover welding loop line.

[0360] Optionally, the first mover maintenance part d61 may include a first mover gripper and a first maintenance station. The first maintenance station may be arranged on one side of the transmission line body. The first mover gripper may grab the mover to be repaired from the transmission line body to the first maintenance station to realize maintenance of the mover outside the loop line, thereby avoiding the mover maintenance affecting the normal operation of the loop.

[0361] Preferably, if Figure 5 As shown, the battery cover welding loop can also include a second mover maintenance part d62, which can be arranged on the above-mentioned third segment line d113. In this way, a mover maintenance part is added to the middle position of the closed loop, so that the faulty mover can be discharged in time, further ensuring the smooth operation of the battery cover welding loop.

[0362] Preferably, if Figure 5 As shown, the second mover maintenance unit d62 may be disposed between the first visual monitoring unit d32 and the first peripheral welding unit d33.

[0363] Similarly, if Figure 5 As shown, the second mover maintenance part d62 may include a second mover gripper and a second maintenance station, and its setting method and setting principle are similar to those of the above-mentioned first mover maintenance part d61, which will not be repeated here.

[0364] The embodiment of the second aspect of the present application also provides an automated production system, including the battery cell assembly production line described in any of the above embodiments, and thus has all the beneficial technical effects of the battery cell assembly production line, which will not be repeated here.

[0365] Optionally, not shown in the figures, the above-mentioned automated production system also includes a battery cell stacking device.

[0366] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery cell assembly production line, characterized in that: The production loop includes a magnetic levitation transport loop and processing equipment arranged along the magnetic levitation transport loop; The magnetic suspension transport loop includes a magnetic induction line and a mover, and the mover can move along the magnetic induction line under the magnetic induction of the magnetic induction line; The magnetic induction line body includes a first conveying part, a second conveying part and a longitudinal conveying part. The second conveying part is set at a height higher than the first conveying part. Both ends of the first conveying part are respectively connected to both ends of the second conveying part via the longitudinal conveying part, so that the first conveying part, the second conveying part and the longitudinal conveying part are surrounded to form a closed conveying line, and the position of the closed conveying line located below the second conveying part forms a loading channel inside the space enclosed by the closed conveying line.

2. The battery cell assembly production line according to claim 1, characterized in that: The battery cell assembly production line includes: A plurality of the production loops, wherein the plurality of the production loops are arranged in sequence along a first direction; A plurality of grabbing devices are provided between two adjacent production loops to grab the product of one of the two adjacent production loops located upstream to the other one located upstream.

3. The battery cell assembly production line according to claim 2, characterized in that: The magnetic induction line body comprises a first conveying line segment, a loading line segment, a second conveying line segment and a unloading line segment which are sequentially arranged along the conveying direction of the magnetic induction line body; The loading line segment and the unloading line segment are both arranged on both sides of the closed conveyor line in the first direction, and the loading line segment and the unloading line segment both extend along the second direction. The second conveying portion is disposed on the first conveying line segment and / or the second conveying line segment. The first conveying line segment, the second conveying line segment and the second conveying portion all extend along the first direction. The second direction intersects the first direction.

4. The battery cell assembly production line according to claim 1, characterized in that: The production loop line includes: The defective product outflow part includes a defective product gripper and a defective product temporary storage warehouse, wherein the defective product gripper can grab the defective products on the mover and put them into the defective product temporary storage warehouse; A mover maintenance part, comprising a mover gripper and a mover maintenance station, wherein the mover maintenance station is arranged on one side of the magnetic induction line body, and the mover gripper can grab the mover that needs maintenance and put it into the mover maintenance station; A jig dust removal unit is provided on the magnetic induction line body, and the jig dust removal unit is provided upstream of the feeding station to remove dust from the refluxed unloaded mover.

5. The battery cell assembly production line according to any one of claims 1 to 4, characterized in that: The battery cell assembly production line also includes: The four production loops are defined as a first loop, a second loop, a third loop and a fourth loop respectively according to the order in which they participate in production; and / or, The incoming material conveyor line is used to convey the bare battery cells to be processed to the loading station of the first loop line.

6. The battery cell assembly production line according to claim 5, characterized in that: The first loop line includes: The tab shaping unit comprises a first flattening device for flattening the tab and a cutting device for cutting the tab; The pre-welding unit is arranged downstream of the tab shaping unit, and includes a first polarity cover plate feeding device and a cover plate pre-welding device. The first polarity cover plate feeding device is used to place the first polarity cover plate on the corresponding mover, and the cover plate pre-welding device is used to weld the first polarity cover plate to the first polarity tab of the battery cell to be processed.

7. The battery cell assembly production line according to claim 5, characterized in that: The second loop line includes: The Mylar film side plate feeding unit, the second loop line is also provided with a feeding station, the Mylar film side plate feeding unit is arranged upstream of the feeding station of the second loop line, and is used to hot-melt fix the Mylar film and the side plate, and put the combination of the Mylar film and the side plate that has been hot-melt fixed into the corresponding mover; The coating unit is arranged downstream of the loading station of the second loop line, and is used for coating the combination on the battery cell to be processed.

8. The battery cell assembly production line according to claim 5, characterized in that: The third loop line includes: A material loading unit, used for loading the battery housing onto the mover of the magnetic induction line of the third loop line; A shell-piercing machine group is arranged between the second loop line and the third loop line. The products of the second loop line are assembled with the battery shell through the shell-piercing machine group and loaded on the mover of the third loop line. A first polarity press-fit welding unit is used to spot-weld and fix the cover plate on the first polarity side of the battery cell to be processed to the battery housing; The second polarity cover plate assembly unit is used to assemble the second polarity cover plate on the side where the second polarity pole ear of the battery cell to be processed is located.

9. The battery cell assembly production line according to claim 5, characterized in that: The fourth loop line includes: A second polarity cover plate welding unit, used for welding and fixing the second polarity cover plate to the battery housing; The first polarity cover plate welding unit seals the connection gap between the first polarity cover plate and the battery shell by welding.

10. An automated production system, characterized in that: A battery cell assembly production line comprising any one of claims 1 to 9.

Images