Automated battery pack assembly production line and assembly method thereof

Abstract

The present invention discloses an automated battery pack assembly production line and an assembly method thereof, wherein the production line includes at least two of a cell module assembly and molding device, a cell module surface pretreatment device, and a battery pack assembly device, and at least one transfer device located between the two or three devices. This solution effectively reduces errors and error accumulation problems caused by manual operation by processing at least two of the multiple processes with automated equipment and combining the transfer device to achieve automated transfer, greatly improving the adequacy and reliability of the fit of the various components, creating favorable conditions for subsequent effective welding, and contributing to improving product quality and product stability, improving product consistency and pass rate, and at the same time increasing assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the field of new energy battery automation equipment, in particular to an automated battery pack assembly production line and an assembly method thereof. Background Art

[0002] During the battery pack processing, it is often necessary to attach multiple cells together to form a Figure 25 The cell module 0001 is shown, and then the cell module 0001 is attached to the terminal 0002, the partition 0003, etc. and then welded.

[0003] When assembling the battery cell module, it is necessary to ensure that the surfaces of the multiple battery cells remain coplanar, that is, after assembly, the bottom surface, top surface and side surfaces of each battery cell are coplanar, so as to ensure that the subsequent battery cell module can be fully contacted with other components such as separators and electrodes during attachment and welding to ensure stable bonding and welding.

[0004] In addition, after the battery cell module is assembled, it is necessary to tear off the protective paper on the double-sided tape on both ends and clean both sides.

[0005] After completing the cleaning and glue removal of the above-mentioned battery cell module, the battery cell module is then assembled with the terminal and partition.

[0006] At present, the above-mentioned processes are still mainly operated manually, which is prone to operational errors during each process. The accumulation of errors will greatly affect the stability of subsequent welding and product quality. Summary of the Invention

[0007] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art and to provide an automated battery pack assembly production line and an assembly method thereof.

[0008] The purpose of the present invention is achieved through the following technical solutions:

[0009] Automated battery pack assembly production line, including at least two of the following: battery cell module assembly and molding device, battery cell module surface pretreatment device, and battery pack assembly device

[0010] and at least one transfer device located between two or three devices.

[0011] Preferably, in the automated battery pack assembly production line, the battery module assembly and molding device includes

[0012] A placement seat, wherein a limiting surface and a fixing mechanism are provided on the table top at a first end thereof, wherein the limiting surface is perpendicular to the length direction of the table top, and the fixing mechanism has a structure for fixing an object abutting against the limiting surface on the table top;

[0013] The pasting device includes a grabbing claw, which can move from one end of the placement seat to the other end and can move back and forth in a direction perpendicular to the placement seat.

[0014] Preferably, in the automated battery pack assembly production line, the grabbing claw includes two clamping bodies driven by a clamping cylinder, the clamping body includes a support frame, and a clamping plate is provided on the support frame so as to be reciprocatingly movable relative to the support frame along the moving direction of the clamping body; the clamping plate is connected to a trigger member, and the trigger member is positioned opposite to a photoelectric sensor fixed on the support frame. Under normal circumstances, the trigger member is not within the sensing range of the photoelectric sensor.

[0015] Preferably, in the automated battery pack assembly production line, a laser sensor is provided above the outer side of the second end of the platform.

[0016] Preferably, in the automated battery pack assembly production line, a fastening mechanism is provided on the outer side of the second end of the table, and the fastening mechanism includes a pressing plate located above the table and parallel to the limiting surface. The pressing plate is floatingly connected to a fastening driving mechanism that drives its movement, and the pressing plate can move back and forth along the extension direction of the table to above the table.

[0017] Preferably, in the automated battery pack assembly production line, the cell module surface pretreatment device includes:

[0018] Battery cell module support platform;

[0019] The cell module locking mechanism has a structure for forming negative pressure on a part of the top surface of the cell module support platform and / or applying downward pressure to the top surface of the cell module support platform and / or applying relative pressure to the space above the cell module support platform;

[0020] a paper removal mechanism, located outside the end of the battery module support platform and capable of reciprocating along the width direction of the battery module support platform;

[0021] The cleaning mechanism comprises a cleaning device located outside the side surface of the battery module support platform, and the cleaning device can at least reciprocate along the extension direction of the side surface of the battery module support platform.

[0022] Preferably, in the automated battery pack assembly production line, the paper removal mechanism includes a paper removal clamp, which is arranged on a mounting plate, and the mounting plate is connected to a fixed linear moving device, and the linear moving device is arranged on a driving device that drives it to move back and forth along the width direction of the battery module support platform; the moving path of the mounting plate driven by the linear moving device forms an acute angle with the angle between the short side of the battery module support platform.

[0023] Preferably, in the automated battery pack assembly production line, a protective paper collector is provided at one end below the paper removal mechanism; and a purge device for forming an airflow toward the protective paper collector is provided above the paper removal mechanism.

[0024] Preferably, in the automated battery pack assembly production line, the battery pack assembly device includes

[0025] Battery cell module placement table;

[0026] The battery cell module fixing mechanism includes a pressure mechanism located on four sides of the battery cell module placement platform and applying pressure in pairs;

[0027] Two end-mount attachment mechanisms are located at both ends of the battery module placement platform, each end-mount attachment mechanism has a support platform and a fixing mechanism, and they can move synchronously relative to the battery module placement platform;

[0028] The partition limiting mechanism has a limiting groove that can pass through the battery module placement platform, and the inner wall of the limiting groove is parallel to the length direction or width direction of the battery module placement platform.

[0029] The battery pack assembly method based on the automated battery pack assembly production line includes the following steps:

[0030] S1000, multiple battery cells are placed one by one on a battery module assembly and forming device and bonded to form a battery module;

[0031] S2000: The transfer device moves the battery cell module to the battery cell module surface pretreatment device to remove the protective paper on the tapes at both ends of the battery cell module and clean both sides of the battery cell module;

[0032] S3000, place two battery cells, two terminals and separators on the battery packaging assembly device in sequence, and the battery packaging assembly device assembles them into a whole.

[0033] The advantages of the technical solution of the present invention are mainly reflected in:

[0034] This solution is ingeniously designed. By using automated equipment to process at least two of the multiple processes and combining it with a transfer device to transfer components, it can effectively reduce the errors and error accumulation problems caused by manual operation, greatly improve the adequacy and reliability of the fit of the components, create favorable conditions for subsequent effective welding, and help improve product quality and product stability, improve product consistency and qualification rate, and at the same time improve assembly efficiency.

[0035] The battery cell module assembly and molding device of this solution can effectively position and support the battery cells by setting a limiting surface on the placement seat. Combined with the fixing device, it can effectively position the first battery cell to avoid errors caused by its movement; the use of a clamping claw attachment device can position each battery cell and unify the position, thereby ensuring that their surfaces can remain in a coplanar state. The assembly process is automated, with high efficiency, good assembly quality, and good assembly consistency.

[0036] The grabbing claws of the battery module assembly and molding device of this solution can be raised and lowered, which can effectively reduce the damage to the battery cells that may be caused by directly moving the battery cells on the placement seat. In addition, the lifting structure is located under the placement seat, the structural layout is reasonable, the equipment is more compact, and it occupies less space.

[0037] The clamping plate of the battery module assembly and molding device can be moved horizontally, which can effectively prevent the battery cell from hard contact with the limit surface, thereby protecting the battery cell and improving safety. Combined with the slot-type photoelectric and trigger components, it can effectively control the stop of the servo system, avoid damage caused by overvoltage of the battery cell, and further improve safety.

[0038] The cell module assembly and molding device of this solution further adopts a fastening mechanism after pasting, and through the floating pressing plate, it can avoid hard contact between the pressing plate and the cell while ensuring compression, reduce the risk of cell damage caused by impact, and improve the yield rate.

[0039] The surface pretreatment device of this solution supports the battery cell module by setting up a battery cell module support table, and positions and fixes the battery cell by a locking mechanism. Combined with the paper removal mechanism and the cleaning mechanism, the paper removal and cleaning operations of the battery cell module can be achieved in one step. It has a high degree of automation and improved efficiency. In addition, the cleaning operation and the paper removal operation have no impact on each other, ensuring quality.

[0040] The design of the moving angle of the glue-tearing jaws in this solution can greatly reduce the pulling force perpendicular to the glue surface applied to the glue layer, thereby reducing the risk of the glue layer peeling off and ensuring the reliability of the protective paper tearing off.

[0041] The setting of the protective paper collector and the purge device can effectively collect the waste protective paper, which is beneficial to maintaining the working site environment.

[0042] The battery pack assembly device of this solution can accurately position the battery module, end plate and partition and realize automatic assembly by setting a battery module placement table, a battery module fixing mechanism, an end attachment mechanism and a partition limiting mechanism with matching positions. It has high assembly accuracy, fast speed, good quality and excellent product consistency, which greatly improves the overall benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a top view of the battery pack assembly production line of the present invention;

[0044] FIG2 is a front view of the assembly molding machine of the present invention;

[0045] FIG3 is a top view of the assembly molding machine of the present invention having one working station;

[0046] FIG4 is an end view of a second end of the assembly molding machine of the present invention;

[0047] Figure 5 yes Figure 3 Enlarged view of the middle E area;

[0048] Figure 6 is an end view of a first end of the assembly molding machine of the present invention;

[0049] Figure 7 yes Figure 4 Enlarged view of the middle F area;

[0050] Figure 8 It is a top view of the assembly molding machine of the present invention having multiple working stations;

[0051] Figure 9 yes Figure 8 Magnified view of the middle G region;

[0052] Figure 10 is a perspective view of a surface pretreatment device of the present invention;

[0053] Figure 11 is a rear view of the surface pretreatment device of the present invention;

[0054] Figure 12 yes Figure 10 Enlarged view of area C in the middle;

[0055] Figure 13 is a top view of the surface pretreatment device of the present invention;

[0056] Figure 14 is a front view of the surface pretreatment device of the present invention;

[0057] Figure 15 yes Figure 10 Enlarged view of area D in the middle;

[0058] FIG16 is a top view of the assembly molding machine of the present invention;

[0059] Figure 17 is a front view of the assembly molding machine of the present invention;

[0060] Figure 18 is Figure 16 A magnified view of area A;

[0061] Figure 19 yes Figure 17Enlarged view of area B in the middle;

[0062] Figure 20 It is a top view of the single-sided battery cell module placement platform, battery cell module fixing mechanism, terminal attachment mechanism and partition limiting mechanism;

[0063] Figure 21 is an end view of the assembly molding machine of the present invention;

[0064] Figure 22 It is a front view of the partition limiting mechanism and the end plate predetermined mechanism of the assembly molding machine of the present invention;

[0065] Figure 23 It is a top view of the partition limiting mechanism and the end plate predetermined mechanism of the assembly molding machine of the present invention;

[0066] Figure 24 It is a partial enlarged view of the partition limiting mechanism and the end plate predetermined mechanism of the assembly molding machine of the present invention;

[0067] Figure 25 Schematic diagram of the battery module of the present invention. DETAILED DESCRIPTION

[0068] The objects, advantages, and features of the present invention are illustrated and explained through the following non-limiting description of preferred embodiments. These embodiments are merely typical examples of the application of the technical solutions of the present invention, and any technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

[0069] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0070] The automated battery pack assembly production line disclosed in the present invention is explained below with reference to the accompanying drawings, which includes a battery cell module assembly and molding device, a battery cell module surface pretreatment device, at least two of the battery pack assembly devices, and at least one transfer device located between two or three devices.

[0071] In a preferred embodiment, as shown in the attached Figure 1As shown, the automated battery pack assembly production line includes the above-mentioned battery cell module assembly and molding device 40, the battery cell module surface pretreatment device 10, the battery pack assembly device 30, the first transfer device 20 and the second transfer device 50.

[0072] The battery cell module assembly and forming device 40 is used to attach multiple battery cells with adhesive layers into a whole to obtain a battery cell module 0001. The battery cell module surface pretreatment device 10 is used to tear off the protective paper on the tape at both ends of the assembled battery cell module 0001 and clean the two sides of the battery cell module so that the battery cell module, the end head and the partition can be assembled into one through the battery pack assembly device 30.

[0073] The second transfer device 50 is used to move the cell module assembled by the cell module assembly and molding device 40 to the cell module surface pretreatment device. The first transfer device 20 is at least used to move the cell module processed by the cell module surface pretreatment device to the battery pack assembly device 30. It can also grab the partitions and end caps from the battery pack partition supply device 60 that supplies partitions with a glue layer on one side and the end cap supply device 70 that supplies end caps to the battery pack assembly device 30. The first transfer device 20 and the second transfer device 50 can be various feasible transfer devices, such as a six-axis robot, etc. The specific transfer device here is a known technology and is not a protection point of this solution, so it will not be described here.

[0074] The following describes the specific structure of each major device:

[0075] The battery module assembly and molding device 40 is used to sequentially bond multiple battery cells into a battery module. Of course, in other embodiments, it can also be used in other application fields that require multiple components to be assembled into one.

[0076] As attached Figure 2 , Attachment Figure 3 As shown, the battery module assembly and molding device includes a carrier 00, a placement seat 01, a limiting surface 02, a fixing device 03 and a pasting device 04, the carrier 00 is used to provide support for the placement seat 01 and the pasting device 04, the placement seat 01 is used to provide support for the battery cell and provide support for the fixing device 03 at the same time; the limiting surface 02 is used to provide positioning for the first battery cell and provide support for the subsequent battery cells to be attached one by one; the fixing device 03 is used to clamp and fix the first battery cell moved to the limiting surface 02 to prevent displacement; the pasting device 04 is used to move the battery cells on the placement seat 01 one by one to the limiting surface 02 for attachment.

[0077] Specifically, as attached Figure 2As shown, the carrier 00 can be any known structure that can provide support. For example, it can be a frame 001 constructed from multiple profiles, with a receiving plate 002 provided on the top of the frame 001 .

[0078] As attached Figure 2 , Attachment Figure 3 As shown, the receiving plate 002 is provided with at least one placement seat 01, which includes two supports 014. A platform 010 is mounted on the two supports 014. The platform 010 is in a flat position, parallel to the device's mounting base. The platform 010 includes a loading plate 015 and a main platform 016. The loading plate 015 is used to place a battery cell to be bonded. It is a flat plate located at the second end 012 of the platform 010. The top surface of the loading plate 015 is provided with a stopper 013 near the second end, and the top surface of the loading plate 015 is slightly lower than the top surface of the main platform 016. A groove 017 extending from one end to the other end is formed in the middle of the top surface of the main platform 016, and a plurality of blocks 018 are arranged on both sides thereof. The blocks 018 have side blocks 019 extending to the top surface of the platform 010. The spacing between the side blocks 019 is slightly larger than the length of the battery cell, so that the battery cell located on the platform can be limited.

[0079] As attached Figure 3 -Attached Figure 5 As shown, the table 010 is provided with the limiting surface 02 located at its first end 011. The limiting surface 02 is perpendicular to the length direction of the table 010 (the direction extending from the first end to the second end of the table). The limiting surface 02 is the end surface of two limiting blocks 021 facing the second end 012 of the table 010 and coplanar. The two limiting blocks 21 are provided in two gaps and are parallel to the vertical plate 020 provided on the table 010. Of course, in other embodiments, the two limiting blocks 021 can also be a limiting plate.

[0080] As attached Figure 3 -Attached Figure 5 As shown, the table 010 is provided with a fixing device 03 located at its first end 011. The fixing device 03 can be implemented in various feasible ways. In a feasible embodiment, the fixing device 03 includes a group of vacuum adsorption holes (not shown in the figure) formed on the table 010, and the vacuum adsorption holes are connected to a vacuum pumping device (not shown in the figure), so that the battery cell can be adsorbed on the table by the vacuum adsorption force and abut against the limit surface.

[0081] In another feasible embodiment, the fixing device 03 is provided with a downward pressing mechanism (not shown in the figure) on the top of the platform 010, and the downward pressing mechanism applies downward pressure to the battery cell through a liftable pressure plate to fix it on the platform 010.

[0082] In another feasible embodiment, as shown in the attached Figure 4 -Attached Figure 6 As shown, the fixing device 03 is a fixed clamp, and the two clamping parts 030 of the fixed clamp are located on the inner side of the limiting surface 02 (the side facing the second end of the table 010), the two clamping parts 030 are close to the top surface of the table 010, and the two clamping parts 030 move back and forth along the width direction of the placement seat 01, and the two clamping parts 030 are driven by a clamping cylinder 031 to clamp and release, and the clamping cylinder 031 is fixed on the table 010 and is located on the outer side of the limiting surface 02.

[0083] As attached Figure 3 , Attachment Figure 6 As shown, the pasting device 04 includes a grabbing claw 040 , which can move linearly from one end of the placement seat 01 to the other end, and can move back and forth in a direction perpendicular to the placement seat 01 .

[0084] As attached Figure 6 As shown, the grabbing clamp 040 can be suspended above the table 010. In a preferred embodiment, the grabbing clamp 040 includes a clamping cylinder 041 located below the table 010 and two clamping bodies 042 driven by the clamping cylinder 041 and located on both sides of the table 010 and extending to above the table 010. The clamping cylinder 041 drives the two clamping bodies 042 to move back and forth along the width direction of the table 010 to achieve opening and clamping.

[0085] As attached Figure 6 As shown, the clamping cylinder 041 is arranged on a lifting device 043 that drives it to move back and forth in a direction perpendicular to the table 010. The lifting device 043 includes a lifting platform 0431 and a lifting cylinder 0432 that drives it to move up and down. The lifting cylinder 0432 is fixed on a mounting seat 0433. The mounting seat 0433 is vertically and slidably provided with a guide column 0434 connected to the bottom of the lifting platform 0431. The mounting seat 0433 is arranged on a linear transfer device 044 that drives it to move back and forth along the length direction of the table 010.

[0086] As attached Figure 6As shown, the linear motion device 044 can be any device or structure capable of generating linear motion. Preferably, it includes a servo linear module 0441 and a guide rail 0442 extending along the length of the platen 010. The servo linear module 0441 is known in the art and will not be described in detail here. The movable portion of the servo linear module 0441 is connected to the mounting seat 0433, which is slidably mounted on the guide rail 0442.

[0087] Moreover, when the fixing device 03 adopts a fixed clamp, the two clamping surfaces of the grabbing clamp 040 (the surface where the grabbing clamp 040 contacts the side of the battery cell) and the two clamping surfaces of the clamping portion 030 of the fixed clamp (the surface where the clamping portion 030 contacts the side of the battery cell) are coplanar in the clamping state, thereby effectively ensuring the position consistency of each battery cell.

[0088] Since the battery cell is at risk of damage when it is under excessive pressure, in a better structure, such as the attached Figure 7 As shown, the clamping body 042 includes a support frame 0421 , and the support frame 0421 is L-shaped as a whole, with its horizontal portion located below the platform 010 and its vertical portions located outside the two sides of the platform 010 . The support frame 0421 is provided with a clamping plate 0422 which can be reciprocated relative to it along its moving direction, and the clamping plate 0422 is located above the clamping plate 030. Specifically, the support frame 0421 is provided with a track 0423 extending along its moving direction, and the clamping plate 0422 is slidably provided on the track 0423. At the same time, the clamping plate 0422 is also provided with an L-shaped block 0424 located at the inner end of the track 0423 (the end facing away from the limiting surface), and the L-shaped block 0424 is slidably provided with a sliding bolt 0425 extending along the length direction of the table 010. The sliding bolt 0425 is connected to the clamping plate 0422, and the outer periphery of the sliding bolt 0425 is provided with a limiting sleeve 0426 located between the clamping plate and the L-shaped block 0424.

[0089] As attached Figure 7As shown, a trigger member 045 is connected to the bottom of the clamping plate 0422 on one side, and the trigger member 045 is opposite to a photoelectric sensor 046 fixed on the support frame 0421. The photoelectric sensor 046 is a slot-type photoelectric, which is located below the clamping plate 0422, and the slot of the slot-type photoelectric is opposite to the trigger member 045. Under normal circumstances, the trigger member 045 is not within the sensing range of the photoelectric sensor 046, that is, the trigger member 045 is closer to the limit surface relative to the photoelectric sensor 046. Therefore, when the battery cell clamped by the clamping plate 0422 contacts the limit surface, the two clamping plates 0422 can drive the trigger member 045 to move toward the photoelectric sensor 046. When the photoelectric sensor 046 senses the trigger member 045, it sends a signal to stop the servo linear module 0441, thereby avoiding damage to the battery cell caused by overvoltage.

[0090] In order to effectively control the transfer of servo linear module 0441, as shown in the attached Figure 3 As shown, a through-beam sensor 047 is provided on the outer side (the side close to the first end of the table) of the two clamping bodies 042, and the through-beam sensor 047 is used to determine the position of the front end face (the end face facing the limiting surface 02) of the battery cell, so that when the through-beam sensor 047 moves to the previous battery cell and is blocked, it can be accurately known that the subsequent servo linear module 0441 needs to drive the battery cell to continue moving. At this time, the servo linear module can be stopped, and a signal can be sent to control the lifting cylinder 0432 of the bonding device 04 to drive the battery cell to descend.

[0091] In addition, in order to ensure that the first battery cell moves close to the limit surface, the movement of the battery cell needs to be stopped so that it descends. Figure 3 As shown, a proximity sensor 048 can also be provided on the inner side of the vertical plate 020. When the battery cell moves into the sensing range of the proximity sensor 048, a signal is sent to stop the servo linear module, and at the same time, the lifting cylinder 0432 drives the battery cell to descend.

[0092] Furthermore, since multiple cells need to be attached, in order to accurately know the number of attached cells, in a preferred embodiment, Figure 8 As shown, a laser sensor 05 is provided above the second end 012 of the platform 010 on the outside thereof. The laser emitted by the laser sensor 05 is directed towards the battery cells on the platform 010. When there are battery cells, the laser is blocked so that the distance between the sensor and the battery cells can be known. According to the different measured distances, it can be known how many battery cells have been pasted, so that the servo linear module can be controlled in combination with the corresponding beam sensor.

[0093] Since the pressure applied by the pasting device 04 to the battery cells during pasting is often limited, after all the battery cells are placed on the plate and pre-pasted together, a further pressure mechanism is required to make the pasting of a group of battery cells more secure. Figure 8 , Attachment Figure 9 As shown, a fastening mechanism 06 is provided on the outside of the second end 012 of the table, and the fastening mechanism 06 includes a pressing plate 061 located above the table 010 and parallel to the limiting surface. The pressing plate 061 can move back and forth along the length extension direction of the table 010 to the top of the table.

[0094] The height of the pressing plate 061 is comparable to that of the laser sensor 05. To prevent interference with the laser sensor 05, a clearance hole (not shown) is provided in the center of the pressing plate 061 to allow the laser beam from the laser sensor 05 to pass through. Furthermore, to prevent the pressing plate 061 from making hard contact with the battery cells, which could cause overvoltage damage, the pressing plate 061 is floatingly connected to a fastening drive mechanism that drives its movement.

[0095] As attached Figure 8 , Attachment Figure 9 As shown, the fastening drive mechanism includes a large cylinder 062 extending along the length direction of the table 010, and the large cylinder 062 is fixed on a U-shaped plate 063, and its movable part is connected to a sliding seat 064 slidably set on the top of the U-shaped plate 063, and the sliding seat 064 is slidably set on the guide rail 069 on the top of the U-shaped plate 063, and is connected to a cross bar 065, and the cross bar 065 is provided with a vertical plate 066 parallel to the pressing plate 061, and the vertical plate 066 is provided with a through hole matching the avoidance hole on the pressing plate 061, and two connecting bolts 067 are vertically and slidably provided on the vertical plate 066, one end of the connecting bolt 067 is connected to the pressing plate 061, and a floating spring 068 located between the pressing plate 061 and the vertical plate 066 is sleeved on the outer periphery of the connecting bolt 067. Of course, the floating spring can also be replaced by other elastic parts, such as multiple metal springs.

[0096] In the above embodiment, only a structure in which a placement seat 01 cooperates with a limiting surface 02, a fixing device 03, an adhesive device 04, a laser sensor 05 and a fastening mechanism 06 is described, which form a processing station. In a more preferred embodiment, in order to improve the assembly efficiency, as shown in the attached Figure 8As shown, the processing stations are preferably multiple (one group), that is, the placement seats 01 are multiple and arranged side by side, and each placement seat 01 cooperates with a limiting surface 02, a fixing device 03, a pasting device 04, a laser sensor 05, and a fastening mechanism 06. Furthermore, in this multi-station structure, some of the multiple pasting devices 04 can share the same attachment movement device that drives the movement of the gripping jaws 040. For example, when there are six processing stations, the pasting devices 04 of the two middle stations can share a set of servo linear modules, while the two stations on either side each use a servo linear module.

[0097] Moreover, in the structure of multiple processing stations, as shown in the attached Figure 8 As shown, the laser sensors 05 of multiple processing stations can be set at the same height on the same T-shaped frame 08, and the pressing plates of multiple fastening mechanisms 06 can be set together on a cross bar 065, and the two ends of the cross bar 065 are respectively connected to the large cylinder.

[0098] Furthermore, after the attachment is completed, it is necessary to cut the material. If there is only one set of multiple processing stations, it is impossible to continue assembling when cutting the material, resulting in a waste of time. Figure 2 , Attachment Figure 8 As shown, the carrier 00 is mounted on a rotating turntable 07. The specific structure of the turntable 07 is known technology and is not a novel feature of this solution, so it will not be described in detail here. The turntable 07 is equipped with two groups of processing stations, each group including multiple processing stations. Each processing station in one group corresponds to each processing station in the other group in a one-to-one and mirror-symmetrical manner, with their limiting surfaces 02 located at opposite ends.

[0099] As attached Figure 10 As shown, the cell module surface pretreatment device 10 includes a workbench 9000 , on which a cell module support platform 1000 , a cell module locking mechanism 2000 , a paper removing mechanism 3000 and a cleaning mechanism 4000 are provided.

[0100] The workbench 9000 is used to provide support for other structures. It can be a frame structure composed of various profiles and plates, which is not limited here. In order to facilitate movement, the bottom of the workbench 9000 is provided with universal wheels. Figure 10 As shown, the battery module support platform 1000 is provided at the top middle position of the workbench 9000. Figure 11As shown, the battery cell module support platform 1000 is used to place the battery cell module, which includes a support leg 1100, a support plate 1200 is horizontally arranged on the support leg 1100, a reinforcing plate 1300 and a group of limiting blocks 1400 located on both sides of the long side of the reinforcing plate 1300 are arranged on the support plate 1200, and the limiting blocks 1400 have ribs extending above the reinforcing plate 1300, and the spacing between the ribs on both sides is equivalent to the width of the battery cell module, so that the width direction of the battery cell can be effectively limited.

[0101] The cell module on the cell module support platform 1000 is fixed on the cell module support platform 1000 via a cell module locking mechanism 2000 . The cell module locking mechanism 2000 may be implemented in various feasible forms.

[0102] In a feasible embodiment, a group of vacuum adsorption holes (not shown in the figure) are formed on the battery cell module support platform 1000, and the vacuum adsorption holes are connected to a vacuum extraction device (not shown in the figure), so that the battery cell module can be adsorbed on the battery cell module support platform 1000 by vacuum adsorption force.

[0103] In another feasible embodiment, a downward pressing mechanism (not shown in the figure) is provided on the top of the battery cell module support platform 1000, and the downward pressing mechanism applies downward pressure to the battery cell module through a liftable pressure plate to fix it on the battery cell module support platform 1000.

[0104] However, the structures of the above two embodiments cannot accurately position the battery module. It is necessary to ensure the accuracy of the position of the battery module in advance when placing the battery module. Therefore, in a more preferred embodiment, as shown in the attached Figure 10 , Attachment Figure 12As shown, the battery module locking mechanism 2000 includes a clamping mechanism 2100 located at both ends (left and right ends) of the battery module support platform 1000, and each of the clamping mechanisms 2100 includes a pressing plate 2110, and the height of the pressing plate 2110 corresponds to the glue-free area above the glue layer on the end face of the battery module. The pressing plate 2110 is fixed to a horizontal plate 2130 through an L-shaped stand 2120, and the horizontal plate 2130 is slidably set on two guide rails 2140 extending along the length direction of the battery module support platform through two sliders at its bottom. The horizontal plate 2130 is connected to a moving device 2150 that drives it to slide along the guide rail 2140, and the moving device 2150 is fixed on the top surface of the workbench 9000. The moving device 2150 is preferably located on the horizontal plate 2130 and can be a linear motor, a linear module, or a structure composed of a motor and a lead screw capable of producing linear motion. Alternatively, it can be a pneumatic cylinder, an oil cylinder, an electric push rod, or other devices. The minimum spacing between the two pressing plates 2110 of the clamping mechanism 2100 is the same as the length of the battery module, so that the two pressing plates 2110 can effectively position and secure the battery module.

[0105] After the cell module locking mechanism 2000 secures the cell module, paper removal and cleaning can begin. Paper removal, performed by the paper removal mechanism 3000, involves removing the protective paper (centrifugal paper or centrifugal membrane) from the adhesive layer at both ends of the cell module. Cleaning, performed by the cleaning mechanism 4000, involves cleaning both sides of the cell module to remove dirt.

[0106] As attached Figure 12 , Attachment Figure 13 As shown, the paper removal mechanism 3000 includes at least one located outside the end 1500 of the battery module support platform 1000 and can reciprocate along the extension direction of the end of the battery module support platform 1000, which includes a paper removal clamp 3100, and the paper removal clamp 3100 includes a clamp cylinder 3110 and two clamps 3120 driven by it, the clamp 3120 includes a main body 3121 and a clamping plate 3122, and mutually matching bosses and notches are formed on the opposite end faces of the two clamping plates 3122, the boss extends in a direction perpendicular to the battery module support platform 1000, and the boss is located at the notch when clamped by the two clamping jaws, so that the head of the protective paper can be stably clamped.

[0107] As attached Figure 12As shown, the paper removal clamp 3100 is adjustably arranged on a mounting plate 3200. Specifically, the clamp cylinder 3110 of the paper removal clamp 3100 has two screw holes, and the mounting plate 3200 has two mounting holes corresponding to the screw holes on the clamp cylinder 3110, one of which is a circular hole 3210, and the other is an arc-shaped hole 3220. The clamp cylinder 3110 and the mounting plate 3200 can be connected by bolts, so that the position of the clamp cylinder 3110 can be adjusted by adjusting the position of one mounting hole on the clamp cylinder 3110 in the arc-shaped hole 3220. The mounting plate 3200 is connected to a fixed linear motion device 3300, and the linear motion device 3300 can be a device that can generate linear motion, such as a cylinder or an oil cylinder.

[0108] As attached Figure 12 As shown, the linear motion device 3300 is arranged on a driving device 3400 that drives it to reciprocate along the end extension direction of the battery module support platform (1000) (the width direction of the battery module support platform) through a sliding member. The sliding member is slidably arranged on a guide bar 3500 extending along the width direction of the battery module support platform. The driving device 3400 is also a variety of devices that can produce linear movement, for example, it can be a cylinder or an oil cylinder. In a preferred embodiment, the driving device 3400 is a linear motor or a linear module, and its two ends extend to the outside of the two long sides of the battery module support platform 1000. At the same time, the driving device 3400 is arranged on the horizontal plate 2130 of the battery module locking mechanism and is located below the pressure plate 2110, so as to move synchronously with the pressure plate 2110.

[0109] In this embodiment, the linear motion device 3300 uses a pneumatic cylinder as an example. When the cylinder shaft is extended, the two jaws 3120 of the paper removal clamp 3100 are positioned at one end of the tape on the end face of the battery module and can clamp the head of the protective paper (release paper or centrifugal film) on the tape that extends beyond the end face of the battery module. When the cylinder shaft is retracted, the paper removal clamp moves the head of the protective paper away from the end face of the battery module, thereby separating the head of the protective paper from the colloid. The drive device 3400 then drives the paper removal clamp 3100 to move linearly toward the other end of the protective paper, thereby tearing the protective paper from the adhesive layer.

[0110] In a further preferred embodiment, in order to prevent the protective paper from lifting the adhesive layer when removing the paper, in a more preferred embodiment, as shown in the attached Figure 13As shown, the moving path (reciprocating direction) of the installation plate 3200 driven by the linear moving device 3300 forms an acute angle with the angle A of the short side of the battery module support platform 1000. This arrangement enables the force direction when tearing off the protective paper to form an acute angle with the adhesive layer, thereby greatly reducing the separation of the vertical adhesive layer due to the pulling force when tearing off the protective paper, and greatly reducing the risk of lifting the adhesive layer.

[0111] After the tearing device 3000 performs the tearing operation, it is necessary to determine whether the protective paper is effectively torn off. Figure 10 As shown, the battery module surface pretreatment device also includes a paper removal determination mechanism 5000, which is used to determine whether the protective paper of the tape is torn off. The paper removal determination mechanism 5000 can use various feasible methods to determine whether there is a glue layer. For example, a high-precision ranging sensor (laser sensor, etc.) can be used to measure the distance from the sensor to the end face of the battery module, so as to determine whether the protective paper is torn off.

[0112] In an optional manner, this is achieved by providing a brightness sensor. Due to the brightness difference between the protective paper and the adhesive layer, the brightness detected by the brightness sensor can be used to determine whether it is the protective paper or the adhesive layer.

[0113] In a more preferred embodiment, this is achieved by providing a color mark sensor, which is provided on the paper removal clamp 3100 through a bracket and is located below the pressure plate and moves synchronously with the paper removal clamp 3100, that is, the color mark sensor is also provided on the linear moving device 3300. The color mark sensor determines whether to tear off the protective paper by identifying the different colors of the white release paper and the black glue layer.

[0114] Furthermore, after the paper removal mechanism 3000 tears off the protective paper, the protective paper needs to be discarded before the next tearing operation can be carried out. Figure 10 As shown, in order to effectively collect the protective paper and avoid the torn protective paper from contaminating the working environment, a protective paper collector 6000 is provided at one end below the paper removal mechanism 3000. The protective paper collector 6000 includes a feed hopper 6100 and a collection box 6200. The protective paper collector 6000 is preferably located directly below the position to which the paper removal clamp of the paper removal mechanism 3000 moves when tearing off the protective paper, so that the paper removal clamp holding the protective paper can be opened immediately to discard the protective paper into the protective paper collector 6000.

[0115] Since the protective paper is light in weight, it is easily affected by airflow and scattered. In view of this, in a more preferred embodiment, as shown in the attached Figure 10As shown, a blowing device 7000 is provided above the paper removal mechanism 3000 to form an airflow toward the protective paper collector 6000. The blowing device 7000 can be various devices that can generate an airflow flowing in a certain direction, such as a blower, a fan, etc., which is not limited here.

[0116] As attached Figure 10 , Attachment Figure 13 As shown, the cleaning mechanism 4000 includes a cleaning device 4100 located outside the side 1600 (long side) of the battery module support platform 1000, and the cleaning device 4100 can at least move back and forth along the side extension direction of the battery module support platform 1000, and it can move from one end of the battery module support platform 1000 to the other end, so that the long side of the battery module on the battery module support platform 1000 can be cleaned.

[0117] The cleaning device 4100 can be any cleaning device. In one feasible embodiment, the cleaning device is a nozzle connected to a high-pressure air source, thereby enabling blow cleaning. In another feasible embodiment, the cleaning device 4100 is a nozzle connected to a dry ice cleaning machine, thereby enabling dry ice cleaning. In yet another feasible embodiment, the cleaning device 4100 is a cleaning head of an ultrasonic cleaning machine, thereby enabling ultrasonic cleaning.

[0118] In a preferred embodiment, the cleaning device 4100 may also have a plasma cleaning gun, and in a more preferred embodiment, there are two plasma cleaning guns, and the plasma cleaning guns have a height difference and are staggered in the longitudinal direction, so that the two plasma cleaning guns can completely cover the side of the battery cell module to complete the complete cleaning of one side of the battery cell module in one cleaning process.

[0119] Of course, in other embodiments, there may be only one plasma cleaning gun, and the entire side of the battery cell module can be covered by the up and down movement of the cleaning device 4100.

[0120] As attached Figure 13 , Attachment Figure 14 As shown, the cleaning device 4100 is connected to a cleaning moving device 4200 that drives it to move back and forth along the length direction of the battery module support platform. The cleaning moving device 4200 can also be various devices that can produce linear movement, such as a cylinder, an oil cylinder, etc., preferably a linear motor or a linear module or a structure composed of a motor and a screw. The cleaning moving device 4200 drives the cleaning device 4100 to move from the outside of one end of the battery module support platform to the outside of the other end.

[0121] Furthermore, since the head of the cleaning device 4100 needs to be kept close to the side of the battery module during cleaning, in the above structure, as shown in the attached Figure 13 , Attachment Figure 14 As shown, the head of the cleaning device 4100 interferes with the placement of the battery module on the battery module support platform 1000 to a certain extent, so in a more optional manner, the cleaning device 4100 can also move back and forth along the width direction of the battery module support platform. Specifically, the two cleaning devices 4100 are arranged on an upper L-shaped member 4300, and the bottom of the L-shaped member 4300 is provided with a slide rail 4400 extending along the width direction of the battery module support platform, and the slide rail 4400 is slidably set on a guide block. The L-shaped member 4300 is connected to a push-pull cylinder 4500 that drives it to move back and forth along the extension direction of the slide rail 4400. The push-pull cylinder 4500 and the guide block 4800 are both arranged on a base plate 4600, and the base plate 4600 is fixed on the movable part of the cleaning mobile device 4200, and the base plate 4600 is slidably set on a track 4700 extending along the length direction of the battery module support platform.

[0122] On the other hand, the tail end of each cleaning device 4100 is connected to a cable or pipe (not shown in the figure). The cable or pipe will be in a drooping state under the action of gravity, which may cause abnormalities in the connection position with the cleaning device 4100 (leakage or damage, etc.). Therefore, the cable or pipe is hung on a hanging rope, and the hanging rope keeps the cable or pipe and the cleaning device 4100 at a similar height or in an approximately coaxial state.

[0123] Further, as attached Figure 10 , Attachment Figure 15 As shown, a code scanning mechanism 8000 is also provided on the base plate 4600, and the code scanning mechanism 8000 includes a vertical pole 8100 provided on the base plate 4600, a loading platform 8200 is provided on the vertical pole 8100, and a cylinder 8300 is provided on the loading platform 8200. The cylinder axis of the cylinder 8300 extends along the width direction of the battery module support platform and is connected to a frame 8600. The frame 8600 is provided with a code scanner 8400 with a lens facing downward and a light source 8500 with a light-emitting surface facing downward.

[0124] In the above structure, there is only one paper removal mechanism 3000 and one cleaning mechanism 4000, so only one end surface of the battery cell module can be removed and one side surface can be cleaned at a time.

[0125] After one paper removal and cleaning operation, the battery module can be rotated 180 degrees horizontally by manual or automated equipment to remove the paper from the other end face and clean the other side face.

[0126] When automated equipment is used to realize the rotation of the battery cell module, it can be realized in different ways. For example, in one feasible way, the battery cell module support platform can be a self-rotating structure, and the battery cell module support platform is connected to a rotating drive mechanism that drives its self-rotation. At this time, the battery cell module support platform can be a circular table, the bottom of which is coaxially connected to a rotating shaft (not shown in the figure), and the rotating shaft is connected to the inner hole of the bearing on the workbench. The rotating shaft is directly or through a transmission structure connected to the motor that drives its self-rotation. Of course, in other embodiments, the battery cell module support platform can also be directly connected to a reduction motor that drives its self-rotation.

[0127] In another embodiment, a mobile robot, such as a six-axis robot, may be provided on the workbench to rotate the battery cell module 180 degrees by the robot. This is a known technology and will not be described in detail.

[0128] In other embodiments, the cleaning mechanism and the paper removal mechanism can even be rotated 180°. The specific rotation structure here is the existing technology and the implementation structure is complex. It is not a design point of this solution and will not be described in detail here.

[0129] In a preferred embodiment, as shown in the attached Figure 10 , Attachment Figure 13 As shown, there are two paper removal mechanisms 3000 and two cleaning mechanisms 4000. Under normal circumstances, the paper removal clamps 3100 of the two paper removal mechanisms 3000 are diagonally distributed, and the cleaning devices 4100 of the two cleaning mechanisms 4000 are diagonally distributed, and the diagonals of the two paper removal clamps 3100 intersect with the diagonals of the two cleaning devices 4100. Therefore, when the four components work at the same time, they can effectively avoid interference with each other, improve the matching degree between each other, and help to increase the working rhythm and improve efficiency.

[0130] As attached Figure 16 , Attachment Figure 17 As shown, the battery pack assembly device 30 includes a bracket 100, and the bracket 100 can be a structure composed of various known profiles and / or plates. Preferably, it includes a lower layer 110 and an upper layer 120 composed of multiple criss-cross profiles. The bracket 100 is also provided with a battery cell module placement platform 200, a battery cell module fixing mechanism 300, an end terminal attachment mechanism 400 and a partition limiting mechanism 500.

[0131] As attached Figure 17As shown, the cell module placement platform 200 is used to place two cell modules side by side. It is mounted on the upper layer 120 and includes a rectangular base plate 210 and a rectangular support plate 220 fixed to the base plate 210. The width of the support plate 220 can be designed as needed, preferably greater than the sum of the width of the two cell modules and the thickness of the separator. In addition, the base plate 210 and support plate 220 are respectively formed with avoidance holes 230 located opposite and near the ends of their short sides. These avoidance holes 230 are used for sensors to detect whether a cell module is placed in the corresponding position.

[0132] Of course, in other embodiments, the battery module placement platform 200 can also be made of plates of other shapes, such as a circular disk, an elliptical disk, or other polygonal plates. Furthermore, the battery module placement platform 200 can also be a structure assembled from crisscross or parallel profiles, so long as it can support two battery modules.

[0133] As attached Figure 16 -Attached Figure 18 As shown, the battery cell module fixing mechanism 300 is used to position the battery cell module located on the battery cell module placement platform 200 and attach the two battery cell modules and the partition as one body, which includes pressure mechanisms located on the four sides of the battery cell module placement platform 200, and the pressure mechanisms are opposite to each other and apply pressure to the battery cells on the battery cell module placement platform 200 in pairs.

[0134] Specifically, as attached Figure 17 , Attachment Figure 18 As shown, the cell module pressure mechanism includes a first pressure mechanism 310 and a second pressure mechanism 320 located on the left and right sides of the cell module placement platform 200, and a third pressure mechanism 330 and a fourth pressure mechanism 340 located on the upper and lower sides of the cell module placement platform 200. The first pressure mechanism 310 and the second pressure mechanism 320 are both disposed on the lower layer 110 of the support 100 and have the same structure. The following embodiments will be described using the first pressure mechanism 310 as an example.

[0135] As attached Figure 18 -Attached Figure 20As shown, the first pressure mechanism 310 includes a pressure block 311. The height of the pressure block 311 satisfies that it is above the adhesive layer of the end face of the battery module on the battery module placement platform 200, thereby avoiding damage to the adhesive layer when force is applied. The length of the pressure block 311 from one end to the other can be designed as needed. For example, the length of the pressure block 311 can be greater than the width of the battery module placement platform 200, or their lengths are equal; or, the length of the pressure block 311 is equal to the sum of the widths of the two battery modules; preferably, the two ends of the pressure block 311 extend to the outside of the two long sides of the battery module placement platform 200.

[0136] The pressing block 311 is connected to a moving device that drives it to move back and forth in a straight line in the left and right directions. The moving device can be any known device or structure that can produce a straight line movement, such as a cylinder, an oil cylinder or an electric push rod, or a structure composed of a motor and a screw, etc. In a preferred embodiment, as shown in the attached Figure 19 , Attachment Figure 20 As shown, the moving device includes a first cylinder 312, which is fixed on a gantry 313 located on the lower layer 110. The cylinder axis of the first cylinder 312 is vertically connected to the pressure block 311. The pressure block 311 is also vertically connected to a guide column 314, and the guide column 314 is slidably inserted into a guide sleeve 315 fixed on the gantry 313.

[0137] At this time, when the cylinder shafts of the two first cylinders of the first pressing mechanism 310 and the second pressing mechanism 320 are extended, the distance between the two pressing blocks is the same as the width of the battery module.

[0138] Since a large-stroke movement requires a large cylinder volume, and after the pressure block contacts the battery cell module, especially when the distance between the two pressure blocks is the smallest, the impact on the battery cell module is large, which can easily cause damage to the battery cell module, therefore, in a preferred structure, the stroke of the first cylinder 312 is reduced, that is, after the cylinder shaft of the first cylinder 312 is extended, the pressure block 311 has not yet contacted the two ends of the battery cell module, and at this time another level of translation structure is added to move the two pressure blocks 311 to the target distance.

[0139] The following description will continue with the first pressure mechanism 310 as an example. Figure 19 , Attachment Figure 20As shown, the first cylinder 312, guide rod, guide sleeve, gantry, etc. constitute a primary push-pull mechanism, which is arranged on a secondary push-pull mechanism. The secondary push-pull mechanism includes a carrier plate 316, which is slidably arranged on a guide rail 318 fixed to the lower layer 110 via a slider 317. The guide rail 318 extends in a longitudinal direction parallel to the battery module placement table. The carrier plate 316 is connected to a second cylinder 319 that drives it to slide along the guide rail 318. Of course, the second cylinder can also be replaced by a device capable of generating linear movement, such as an oil cylinder or an electric cylinder.

[0140] The respective moving strokes of the second cylinder 319 and the first cylinder 312 can be limited according to actual needs. For example, the grooves of the two cylinders can be the same or different. In the preferred structure, as shown in the attached figure, Figure 19 As shown, the first cylinder 312 adopts a small cylinder with a smaller stroke, and the second cylinder adopts a large cylinder with a stroke greater than that of the first cylinder 312. When pressure is applied, it is preferred to extend the cylinder shaft of the second cylinder first, and then extend the cylinder shaft of the first cylinder. The advantage of such an action is that since the first cylinder 312 adopts a small cylinder, the impact force it generates on the battery cell module is smaller, and it is not easy to cause damage to the battery cell module.

[0141] The above embodiment is described by taking the structures of the first pressure mechanism 310 and the second pressure mechanism 320 as the same as an example; of course, in other embodiments, the structures of the first pressure mechanism 310 and the second pressure mechanism 320 may also be different, for example, one of the first pressure mechanism 310 and the second pressure mechanism 320 has a one-stage push-pull structure, and the other has a two-stage push-pull structure; or the power sources of the first pressure mechanism 310 and the second pressure mechanism 320 are one cylinder and the other a motor, etc.

[0142] As attached Figure 20 As shown in FIG, the structures of the third pressure mechanism 330 and the fourth pressure mechanism 340 are similar to the structure of the first push-pull mechanism of the first pressure mechanism 310, except that the length and width of the pressure blocks 331 and 341 of the third pressure mechanism 330 and the fourth pressure mechanism 340 are equivalent to the length and width of the battery module. Figure 13 As shown, the moving devices of the third and fourth pressure mechanisms 330 and 340 use motors 332 and 342 as power sources. The moving devices may be electric push rods, so that the moving distances of the pressure heads of the third and fourth pressure mechanisms 330 and 340 can be adjusted. Of course, the moving devices of the third and fourth pressure mechanisms 330 and 340 may also use air cylinders or oil cylinders.

[0143] Furthermore, in a more preferred embodiment, in order to reduce the impact of the pressure head on the battery module, as shown in the attached Figure 20 -Attached Figure 22 As shown, a buffer pad 350 is also provided on the end surface of the front end surface of the pressure head of the four pressure-applying mechanisms facing the battery module placement table. The buffer pad 350 can be a soft material such as a silicone pad, a rubber pad, etc. At this time, the distance between the relative pressure heads can be adaptively adjusted according to the thickness of the buffer pad 350.

[0144] As attached Figure 17 As shown, there are two terminal attachment mechanisms 400, which are located outside the two ends of the battery module placement platform 200 and are used to fix the two terminals and attach the two terminal terminals to the two ends of the battery module. Figure 19 , Attachment Figure 20 As shown, each terminal attaching mechanism 400 has a supporting platform 410 and a fixing mechanism 420 , which can move synchronously relative to the battery cell module placement platform 200 .

[0145] Specifically, as attached Figure 19 As shown, the support platform 410 is an L-shaped member, which includes a bottom plate 411 that is parallel to the top surface of the battery module placement platform 200 and higher than the battery module placement platform 200, and a vertical plate 412 located thereon. The width of the bottom plate 411 can be less than or greater than the width of the end head, and is preferably less than the width of the end head. The length of the vertical plate 412 is less than the length of the end head, and of course, its length can also be equal to or greater than the length of the end head. The reason why the length of the vertical plate 412 is less than the length of the end head is to facilitate the installation of the fixing mechanism 420. The support platform 410 is such that the top of the end head on it is not higher than the bottom surface of the pressure plate of the first pressure mechanism 310.

[0146] As attached Figure 19 , Attachment Figure 20 As shown, the fixing mechanism 420 can be any of various known fixing structures. For example, a set of vacuum adsorption holes (not shown) can be formed on the bottom plate 411 and / or the vertical plate 412. The vacuum adsorption holes are connected to a vacuum pump, so that the terminal can be adsorbed and fixed by the negative pressure of the vacuum adsorption holes. Alternatively, when the terminal is a magnetic conductor, the bottom plate 411 and / or the vertical plate 412 can be magnets; or a downward pressure mechanism can be provided on the vertical plate 412 to apply pressure to the terminal on the bottom plate 411 to confine the terminal to the bottom plate 411.

[0147] In a preferred embodiment, as shown in the attached Figure 19 , Attachment Figure 20As shown, the fixing mechanism 420 includes a clamping cylinder 421 fixed on the vertical plate 412, and the two movable blocks of the clamping cylinder 421 are respectively connected to a clamping plate 422, and the two clamping plates 422 are located outside the two sides of the vertical plate 412. The clamping cylinder 421 drives the two clamping plates 422 to retract or open, thereby clamping or loosening the end located on the bottom plate 411.

[0148] As attached Figure 19 , Attachment Figure 20 As shown, the support platform 410 and the fixing mechanism 420 are further connected to a translation mechanism 430 that drives them to move linearly and synchronously. The translation mechanism 430 can be a device or structure that drives them to move linearly and reciprocally along a length direction parallel to the battery module placement platform, such as a pneumatic cylinder or an oil cylinder. Preferably, it includes a third pneumatic cylinder 431, which is connected to a carrier plate 432 and drives the carrier plate 432 to move back and forth along a slider 434 via a slide rail 433 at its bottom. The slide rail 433 extends along a length direction parallel to the battery module placement platform. The support platform 410 is disposed on the carrier plate 432.

[0149] The moving stroke of the third cylinder 431 of the two translation mechanisms 430 can be designed according to requirements. Similarly, they can drive the spacing between the relative end faces of the end heads located on the support platform 410 to be consistent with the length of the battery cell module, so that the two end heads can be effectively attached to the two ends of the battery cell module.

[0150] Of course, at this time, it also has the problem of large impact due to large stroke, so as shown in the attached Figure 19 As shown, the translation mechanism 430 can also adopt a two-stage translation mechanism. In a preferred embodiment, the third cylinder 431, the slide rail 433 and the slider 434 are arranged on the supporting plate 316 of the first pressure mechanism 310, so that the translation mechanism 430 does not need to be additionally provided with a first-stage translation structure. At this time, the third cylinder 431 can adopt a small-stroke cylinder, which can reduce the impact on the battery module during attachment on the one hand, and simplify the structure on the other hand to make the overall structure more compact.

[0151] When the end head is placed on the support platform 410, there is a situation where the end head and the vertical plate 412 of the support platform 410 do not fit together, resulting in position error, thereby reducing the accuracy of subsequent assembly. Figure 9 As shown, the battery pack assembly device further includes two terminal pre-positioning mechanisms 600 , and each terminal pre-positioning mechanism 600 is matched with one terminal attaching mechanism 400 .

[0152] As attached Figure 23 , Attachment Figure 24As shown, the end pre-positioning mechanism 600 includes a pressing head 610, which can be translated between the battery cell module placement platform 200 and the support platform 410, and the pressing head 610 can be moved from below the top surface of the battery cell module placement platform 200 to above the top surface.

[0153] Specifically, the pressing head 610 is preferably a flat plate that is perpendicular to the length of the electrical module placement platform. Of course, it can also be other shapes, such as an L-shaped piece or a cylindrical piece. The pressing head 610 is fixed to at least one level of a horizontal push mechanism 620 that drives it to move back and forth in the left and right directions along the length of the battery module placement platform. The horizontal push mechanism 620 is mounted on a lifting mechanism 630 that drives it to move back and forth in a direction perpendicular to the electrical module placement platform.

[0154] As attached Figure 22 , Attachment Figure 23 As shown, the horizontal push mechanism 620 includes a fourth cylinder 621, which is fixed to the lifting mechanism 630. The cylinder shaft of the fourth cylinder 621 is clamped to an adapter 622, which is connected to a support plate 623. The support plate 623 is slidably mounted on a guide block 625 on the lifting mechanism 630 via a guide rail 624 provided at its bottom. The guide rail 624 extends along the length of the battery module placement platform 200. The pressure head 610 is vertically mounted on the support plate 623.

[0155] Of course, in a more preferred embodiment, as shown in the attached Figure 23 , Attachment Figure 24 As shown, the pressing head 610 also includes a second-stage pushing mechanism, which is a fifth cylinder 626 fixed on the support plate 623. The extension and retraction direction of the cylinder axis of the fifth cylinder 626 is parallel to the length direction of the battery module placement table 200, and the cylinder axis of the fifth cylinder 626 is connected to the pressing head 610.

[0156] As attached Figure 22 As shown, the lifting mechanism 630 includes a lifting plate 631, the fourth cylinder 621 and the guide block 625 are fixed on the lifting plate 631, the lifting plate 631 is connected to a sixth cylinder 632, the sixth cylinder 632 is fixed on a base plate 634 located at the bottom of the bracket 100, the base plate 634 is connected to the bracket 100 through a group of pillars 633, and the lifting plate 631 is connected to two guide columns 635, and the guide columns 635 can be slidably inserted into the guide sleeve 636 provided on the base plate 634.

[0157] Each of the end head pre-positioning mechanisms 600 may include a lifting mechanism 630 . In a preferred embodiment, the two end head pre-positioning mechanisms 600 share one lifting mechanism 630 to simplify the structure.

[0158] As attached Figure 22 As shown, the partition limiting mechanism 500 is used to limit the partition, and it has a limiting groove 510. The limiting groove 510 can pass through the battery module placement platform 200, and its two opposing inner walls 511 and 512 are parallel to the length direction of the battery module placement platform. Preferably, the limiting groove 510 is located in the middle of the battery module placement platform 200, so that the width of the electrical module placement platforms on both sides is the same. The width of the limiting groove 510 is equivalent to the thickness of the partition, and its depth can be designed as needed to ensure that when the limiting groove 510 is raised above the battery module placement platform 200, the bottom of the limiting groove 510 does not exceed the top surface of the battery module placement platform 200.

[0159] The movement of the limiting groove 510 can be achieved by an independent lifting mechanism. In a preferred embodiment, the limiting groove 510 and the end head pre-positioning mechanism 600 share a lifting mechanism, that is, the limiting groove 510 is arranged on the lifting plate 631 of the lifting mechanism 630, so that it can be lifted and lowered synchronously with the pressure head 610 of the end head pre-positioning mechanism.

[0160] In actual use, if only one limiting groove 510 is used to limit the partition, its stability will be poor, and the partition cannot be pre-positioned. Therefore, in a more optimal structure, as shown in the attached Figure 22 -Attached Figure 24 As shown, auxiliary positioning grooves 640 are respectively provided on the opposing end surfaces of the two pressing heads 610. The two opposing inner side surfaces 641 and 642 of the auxiliary positioning grooves 640 are respectively coplanar with the two opposing inner walls 511 and 512 of the limiting groove 510, so that the two auxiliary positioning grooves 640 cooperate with the limiting groove 510 to pre-position the end plate. The top surface of the auxiliary positioning grooves 640 is higher than the top surface of the limiting groove. Therefore, after the limiting groove 510 moves below the top surface of the battery cell module, the auxiliary positioning grooves 640 can still limit the partition. At this time, the third and fourth pressure mechanisms can continue to be activated to push the battery cell module.

[0161] In actual use, after the battery cell module, terminal and partition are assembled into one, the assembled whole needs to be moved out of the battery cell module placement table by a blanking robot for subsequent reassembly. In order to speed up the overall working rhythm of the equipment and save blanking time, the bracket 100, battery cell module placement table 200, battery cell module fixing mechanism 300, terminal attachment mechanism 400, partition limiting mechanism 500, and terminal pre-positioning mechanism 600 are two sets, and the two sets of structures adopt a high and low position setting, that is, one set of structure is located above and one set is located below. Of course, they can also be set side by side. The reason for adopting the high and low position setting is that the high and low position setting can better utilize the longitudinal space and save floor space; at the same time, it can better cooperate with the height of the higher blanking robot to make up for the travel problem of the blanking robot. In addition, as shown in the attached Figure 16 As shown, the two sets of brackets 100 can slide along the two guide sleeves. The brackets 100 are connected to the driving mechanism 800 that drives them to move back and forth along the guide sleeves 700. The driving mechanism 800 can also generate various devices for linear movement, such as oil cylinders, air cylinders, etc., preferably a linear motor or linear module, whose sliders are connected to the brackets 100.

[0162] In a further preferred structure, in order to reduce power requirements and energy consumption, the battery module placement table 200, the two relative pressure mechanisms, the first pressure mechanism and the second pressure mechanism, the end attachment mechanism 400 and the partition limiting mechanism 500 of the battery module fixing mechanism 300 in each set of the structure are arranged on the bracket 100; the other two relative pressure mechanisms, the third pressure mechanism and the fourth pressure mechanism of the battery module fixing mechanism 300 are fixed in position, specifically, they are fixed on the frame 900.

[0163] When the entire equipment is running, whether it is the entire system, or a single battery module assembly and molding device 40, a battery pack assembly device 30 or a battery module surface pretreatment device 10, various control devices, such as PLC, etc., combined with various sensors, such as proximity switches, position switches, etc., can be used to start and stop various motors, cylinders and other components and switch their states. This is a known technology and is not an innovation of this solution, so it will not be elaborated here.

[0164] When the above-mentioned automated battery pack assembly line is used to assemble the battery pack, it includes the following steps:

[0165] S1000, multiple battery cells are placed one by one on a battery module assembly and forming device and bonded to form a battery module;

[0166] S2000: The transfer device moves the battery cell module to the battery cell module surface pretreatment device to remove the protective paper on the tapes at both ends of the battery cell module and clean both sides of the battery cell module;

[0167] S3000, place two battery cells, two terminals and separators on the battery packaging assembly device in sequence, and the battery packaging assembly device assembles them into a whole.

[0168] The step S1000 specifically includes the following steps:

[0169] A battery cell is placed on the loading plate 015 manually or by automated equipment, with the protective paper on the adhesive surface of the battery cell facing the limiting surface 02 not removed, and the adhesive layer on the side of the battery cell facing away from the limiting surface 02 is exposed.

[0170] S100, the clamping cylinder 041 of the grabbing clamp 040 drives the two clamping bodies 042 to move synchronously to clamp and grab the battery cell on the loading plate 015.

[0171] S200, the lifting cylinder 0432 drives the clamping cylinder 041 to lift upward, driving the battery cell clamped by the clamping body 042 to rise and separate from the loading plate 015.

[0172] At step S300, the servo linear module 0441 activates and drives the gripping jaw 040, causing the battery cell on it to move toward the limiting surface 02 until a predetermined gap is maintained between the battery cell and the limiting surface 02. The servo linear module 0441 then stops, and the lifting cylinder 0432 drives the gripping jaw 040 downward, causing the battery cell to drop onto the main platform 016. This gap can be designed as needed and achieved through PLC program settings that control the servo linear module. Alternatively, it can be determined using signals from a beamforming sensor.

[0173] S400, the servo linear module 0441 is started again to drive the grabbing claw 040 to continue moving toward the limiting surface 02 until the battery cell is in contact with the limiting surface 02 and then stops.

[0174] At step S500, the clamping cylinder 031 of the fixed clamping jaw is activated to move the two clamping parts 030 relative to each other to clamp and fix the battery cell.

[0175] At step S600, the servo linear module 0441 drives the gripping claw 040 to reset, and steps S1-S4 are repeated to sequentially bond the multiple battery cells together. The battery cells subsequently placed on the loading plate 015 are then coated with adhesive as needed. The protective tape covering the outer surface of the outermost battery cell remains intact. This is not a design feature of this solution and will not be discussed further.

[0176] S700: The large cylinder 062 of the fastening mechanism 06 is activated to drive the pressing plate 061 to move toward the battery cells and apply pressure to the outer side of the outermost battery cell to adhere and fasten the multiple battery cells. The fastening mechanism 06 can be reset after fastening for a period of time.

[0177] S800, after the fastening is completed, the clamping cylinder 031 of the fixed clamping jaw is started to open the two clamping parts 030 to release the clamping and fixation of the first battery cell, so that the material can be unloaded.

[0178] Of course, in other embodiments, the battery cell may be first brought into contact with the limiting surface and then lowered onto the platform.

[0179] The S2000 step specifically includes the following process:

[0180] S01: The second transfer device 50 places the cell module with the tape on the cell module support platform 1000 and makes both ends of the cell module face the cell module locking mechanism 2000.

[0181] S02 , the two moving devices 2150 of the battery cell module locking mechanism 2000 drive the two pressing plates 2110 to move toward each other to position and fix the battery cell module.

[0182] S03, the two linear moving devices 3300 of the paper removal mechanism 3000 drive the paper removal clamps 3100 to extend forward, and then the clamp cylinder 3110 starts to drive the two clamps 3120 to clamp the heads of the protective paper on the tape at both ends of the battery cell module. Then, the linear moving device 3300 drives the paper removal clamps 3100 to retract, separating the heads of the protective paper from the adhesive layer; then the two driving devices 3400 drive the two paper removal clamps 3100 to move toward each other, thereby tearing off the two protective papers.

[0183] S04, while the paper removal mechanism 3000 is working, the cylinder shafts of the push-pull cylinders 4500 of the two cleaning mechanisms 4000 are extended to make the two cleaning devices 4100 close to the two sides of the battery cell module, and the cleaning devices 4100 start to clean. Then the two cleaning moving devices 4200 drive the cleaning devices 4100 connected to them to move toward each other to achieve simultaneous cleaning of the two sides of the battery cell module.

[0184] S05: After the two paper removal clamps 3100 move to the top of the protective paper collector 6000, the clamp cylinder opens the two clamps to untie the protective paper, and the protective paper is blown into the protective paper collector 6000 by the airflow of the purge device 7000. After the paper removal and cleaning are completed, all components are reset.

[0185] In addition, when the paper removal determination mechanism 5000 determines that the protective paper has not been torn off, an alarm may be issued to remind the staff to manually tear off the protective paper before unloading.

[0186] The S3000 step specifically includes the following steps:

[0187] S1, after the equipment is started, the cylinder shaft of the sixth cylinder 632 of the lifting mechanism 630 extends, so that the limiting groove 510 extends from the bottom of the battery module placement platform 200 to the top of the battery module placement platform 200.

[0188] S2, grabbing a cleaned and protective paper-removed battery cell module from the surface pretreatment device through the first transfer device 20 and placing it on the battery cell module placement platform 200 and on one side of the limiting groove 510.

[0189] S3, then, manually or by the first transfer device, the two terminals are placed on the support platforms 410 of the two terminal attaching mechanisms 400 respectively.

[0190] S4, at this time, the cylinder shafts of the fourth cylinder 621 and / or the fifth cylinder 626 of the end pre-positioning mechanism 600 are respectively extended to drive the two pressing heads 610 to move toward the support platform 410 respectively, so that the two pressing heads 610 respectively apply thrust to the surfaces of the two ends to make them fit with the vertical plate 412 of the support platform 410.

[0191] S5. Subsequently, the clamping cylinders 421 of the fixing mechanisms 420 of the two end-piece attaching mechanisms 400 retract the two clamping plates 422 to clamp and secure the end-pieces on the support platform 410, thereby achieving the positioning of the two end-pieces. After clamping, the cylinder shafts of the fourth cylinders 621 and / or the fifth cylinders 626 of the two end-piece pre-positioning mechanisms 600 retract.

[0192] S6 , placing another battery cell module on the battery cell module placement platform 200 and on the other side of the limiting groove by using the first transfer device.

[0193] S7, then manually or through automated equipment, place the partition in the limiting groove 510 and the two auxiliary positioning grooves 640 to achieve positioning of the partition.

[0194] S8, then, the cylinder shafts of the second cylinders 319 and 329 of the first pressure mechanism 310 and the second pressure mechanism 320 of the battery module fixing mechanism 300 are extended first. After the cylinder shaft of the second cylinder 319 is extended, the cylinder shafts of the first cylinders 312 and 322 are extended again, thereby driving the pressure blocks 311 and 321 to position the two end faces of the battery module and the partition.

[0195] S9, the motors 332, 342 of the third pressure mechanism 330 and the fourth pressure mechanism 340 of the battery module fixing mechanism 300 are started, driving the two pressure blocks 341, 331 to apply relative pressure to the outer sides of the two battery modules until the two battery modules and the partition maintain a set gap and then stop. The gap is preferably controlled to stop at 3-5mm. The control of the spacing here can be calculated based on the data of the encoder of the motor to calculate the pushing distance, and then determined in combination with the fixed spacing between the pressure plate and the limiting groove. This is a known technology and will not be elaborated here. It can also be achieved by auxiliary sensors such as laser rangefinders.

[0196] S10 , then, the cylinder shaft of the sixth cylinder 632 of the lifting mechanism 630 is retracted, so that the limiting groove 510 moves from the bottom of the battery cell module placement platform 200 to below the top surface of the battery cell module placement platform 200 .

[0197] S20 , the two motors of the third pressing mechanism and the fourth pressing mechanism of the battery cell module fixing mechanism 300 are started again to attach the two battery cell modules to the partition.

[0198] S30: The cylinder shafts of the third cylinders 431 of the two terminal attachment mechanisms 400 extend to drive the two terminal attachments on the two support platforms 410 to attach to the ends of the battery cell module and the separator, completing the assembly.

[0199] S40, the driving mechanism 800 drives the bracket 100 and the structures thereon to move as a whole from one end of the guide sleeve to the other end, and then the various structures on the bracket 100 are reset, and manual or automated equipment is used for unloading.

[0200] S50, while one set of mechanisms is moving to cut materials, the other set of mechanisms is assembled according to the above S10-S40 process.

[0201] S60, two sets of mechanisms perform assembly and unloading alternately.

[0202] There are many implementation methods of the present invention, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present invention.

Claims

1. Automated battery pack assembly production line, characterized by: It includes a battery cell module assembly and molding device, a battery cell module surface pretreatment device, a battery pack assembly device, a first transfer device and a second transfer device; The battery module assembly and forming device is used to attach multiple battery cells with adhesive layers into a whole to obtain a battery module. The battery module surface pretreatment device is used to tear off the protective paper on the tape at both ends of the assembled battery module and clean the two sides of the battery module. The battery pack assembly device is used to assemble the battery module, the end cap and the separator into one body. The second transfer device is used to move the battery cell module assembled by the battery cell module assembly and molding device to the battery cell module surface pretreatment device; The first transfer device is at least used to move the battery cell module processed by the battery cell module surface pretreatment device to the battery pack assembly device; The battery module assembly and molding device includes: A placement seat, wherein a limiting surface and a fixing mechanism are provided on the table top at a first end thereof, wherein the limiting surface is perpendicular to the length direction of the table top, and the fixing mechanism has a structure for fixing an object abutting against the limiting surface on the table top; The pasting device includes a gripping claw that can move from one end of the placement seat to the other end and can reciprocate in a direction perpendicular to the placement seat; The battery module surface pretreatment device includes: Battery cell module support platform; The cell module locking mechanism has a structure for forming negative pressure on a part of the top surface of the cell module support platform and / or applying downward pressure to the top surface of the cell module support platform and / or applying relative pressure to the space above the cell module support platform; a paper removal mechanism, located outside the end of the battery module support platform and capable of reciprocating along the extension direction of the end of the battery module support platform; A cleaning mechanism, comprising a cleaning device located outside the side of the battery module support platform, wherein the cleaning device can at least reciprocate along the extension direction of the side of the battery module support platform; There are two paper removal mechanisms and two cleaning mechanisms. Under normal circumstances, the paper removal claws of the two paper removal mechanisms are diagonally distributed, and the cleaning devices of the two cleaning mechanisms are diagonally distributed. The diagonals of the two paper removal claws intersect with the diagonals of the two cleaning devices, and the paper removal mechanism and the cleaning mechanism work simultaneously.

2. The automated battery pack assembly line according to claim 1, characterized in that: The grabbing clamp includes two clamping bodies driven by a clamping cylinder, and the clamping bodies can move back and forth along the width direction of the table. The clamping bodies include a support frame, and a clamping plate is provided on the support frame so as to move back and forth relative to the support frame along the moving direction of the clamping bodies; the clamping plate is connected to a trigger member, and the trigger member is positioned opposite to a photoelectric sensor fixed on the support frame. Under normal circumstances, the trigger member is not within the sensing range of the photoelectric sensor.

3. The automated battery pack assembly line according to claim 1, characterized in that: A laser sensor is provided on the outer side of the second end of the platform and is located above the second end.

4. The automated battery pack assembly line according to claim 1, characterized in that: A fastening mechanism is provided on the outer side of the second end of the table, and the fastening mechanism includes a pressing plate located above the table and parallel to the limiting surface. The pressing plate is floatingly connected to the fastening driving mechanism that drives its movement. The pressing plate can move back and forth along the extension direction of the table to the top of the table.

5. The automated battery pack assembly line according to claim 1, characterized in that: The paper removal mechanism includes a paper removal clamp, which is arranged on a mounting plate. The mounting plate is connected to a fixed linear moving device, and the linear moving device is arranged on a driving device that drives it to move back and forth along the width direction of the battery module support platform; the linear moving device drives the moving path of the mounting plate to form an acute angle with the short side of the battery module support platform.

6. The automated battery pack assembly line according to claim 1, characterized in that: A protective paper collector is provided at one end of the paper removal mechanism below the paper removal mechanism; and a blowing device for forming an airflow toward the protective paper collector is provided above the paper removal mechanism.

7. The automated battery pack assembly line according to any one of claims 1 to 6, characterized in that: The battery pack assembly device includes: Battery cell module placement table; The battery cell module fixing mechanism includes a pressure mechanism located on four sides of the battery cell module placement platform and applying pressure in pairs; Two end-mount attachment mechanisms are located at both ends of the battery module placement platform, each end-mount attachment mechanism has a support platform and a fixing mechanism, and they can move synchronously relative to the battery module placement platform; The partition limiting mechanism has a limiting groove that can pass through the battery module placement platform, and the inner wall of the limiting groove is parallel to the length direction or width direction of the battery module placement platform.

8. The battery pack assembly method of the automated battery pack assembly production line according to claim 1, characterized in that: The steps include: S1000, multiple battery cells are placed one by one on a battery module assembly and forming device and bonded to form a battery module; S2000: The transfer device moves the battery cell module to the battery cell module surface pretreatment device to remove the protective paper on the tapes at both ends of the battery cell module and clean both sides of the battery cell module; S3000, place the two battery cell modules, two terminals and partitions on the battery packaging assembly device in sequence, and the battery packaging assembly device assembles them into a whole.

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