Battery processing apparatus and processing method

Abstract

A battery processing apparatus (600) and processing method. The battery processing apparatus (600) comprises a material conveying assembly (610), a pairing assembly (630) and a welding assembly (690); the material conveying assembly (610) is used for conveying a first electrode assembly (250) and a second electrode assembly (251), wherein the first electrode assembly (250) and the second electrode assembly (251) each comprise an electrode body portion (220) and a tab portion (201) arranged on the electrode body portion (220); the pairing assembly (630) is used for pairing the first electrode assembly (250) and the second electrode assembly (251), so as to make the electrode body portion (220) of the first electrode assembly (250) and the electrode body portion (220) of the second electrode assembly (251) overlap each other; the welding assembly (690) is used for welding the tab portion (201) of the paired first electrode assembly (250) and the tab portion (201) of the paired second electrode assembly (251) to each other. In this way, the production efficiency of a battery cell (1) can be improved.

Description

Battery processing equipment and processing method

Technical field

[0001] The present application relates to the field of battery assembly technology, and in particular to battery processing equipment and methods. [Background Technology]

[0002] With the advancement of battery technology, batteries are being used in a growing number of fields and are gradually replacing traditional fossil fuels in the automotive powertrain sector. Batteries store chemical energy and controllably convert it into electrical energy. In recyclable batteries, after discharge, the active materials can be activated by recharging for continued use.

[0003] Battery cells often include a housing and two electrode assemblies housed within it. During battery assembly, the two electrode assemblies must be placed within the housing. However, existing battery processing equipment presents difficulties in inserting the two electrode assemblies into the housing, resulting in low production efficiency.

[0004] [Summary of the invention]

[0005] In view of the above problems, the present application provides battery processing equipment and processing methods, which can improve the production efficiency of battery cells.

[0006] In a first aspect, the present application provides a battery processing device, comprising a material conveying assembly, a mating assembly, and a welding assembly. The material conveying assembly is used to convey a first electrode assembly and a second electrode assembly, wherein the first electrode assembly and the second electrode assembly each include an electrode body and a tab portion disposed on the electrode body. The mating assembly is used to mate the first electrode assembly and the second electrode assembly so that the electrode body of the first electrode assembly and the electrode body of the second electrode assembly overlap each other. The welding assembly is used to weld the tab portion of the paired first electrode assembly to the tab portion of the second electrode assembly.

[0007] In the above manner, the first electrode assembly and the second electrode assembly are paired by providing a pairing assembly, which facilitates the subsequent welding of the electrode lugs and the assembly of the first and second electrode assemblies into the housing. The paired electrode lugs of the first and second electrode assemblies are welded to each other by providing a welding assembly, which enables alignment and stable connection of the first and second electrode assemblies, facilitating the subsequent assembly of the first and second electrode assemblies into the housing, thereby improving the production efficiency of battery cells.

[0008] In some embodiments, the material conveying assembly includes a first branch conveying line and a second branch conveying line, the first branch conveying line is used to convey the plurality of first electrode assemblies, and the second branch conveying line is used to convey the plurality of second electrode assemblies.

[0009] Through the above-mentioned manner, it is convenient to manage and operate the first electrode assembly and the second electrode assembly separately, which is beneficial for the first electrode assembly and the second electrode assembly to meet the requirements of battery processing.

[0010] In some embodiments, the material conveying assembly further includes a main conveying line and a diversion mechanism, wherein the main conveying line is used to convey multiple first electrode assemblies and multiple second electrode assemblies, and the diversion mechanism is used to divert the first electrode assembly from the main conveying line to the first branch conveying line, and to divert the second electrode assembly from the main conveying line to the second branch conveying line.

[0011] Through the above-mentioned method, the loading of the first electrode assembly and the second electrode assembly is facilitated, thereby improving the loading efficiency.

[0012] In some embodiments, the first branch conveyor line and the second branch conveyor line are respectively connected to the main conveyor line to form a first connection point and a second connection point, the first connection point is located upstream of the second connection point, the diversion mechanism includes a diversion detection member, a diversion member and a diversion drive member, wherein the diversion detection member is provided on the main conveyor line and is located upstream of the first connection point, the diversion detection member is used to detect whether the object flowing to the first connection point is the first electrode assembly or the second electrode assembly, the diversion member is provided at the first connection point, and the diversion drive member responds to the object arriving at the first connection point being the first electrode assembly to transmit the diversion member to the first position, so that the first electrode assembly flows to the first branch conveyor line under the action of the diversion member. The diversion drive member responds to the object arriving at the first connection point being the second electrode assembly to transmit the diversion member to the second position, so that the second electrode assembly continues to flow along the main conveyor line to the second connection point.

[0013] Through the above-mentioned method, the accuracy of shunting the first electrode assembly and the second electrode assembly can be improved, and the shunting stability and flexibility can be improved.

[0014] In some embodiments, the material conveying assembly includes a first branch return line and a second branch return line, the first branch conveying line is used to convey the first pallet and the first electrode assembly carried on the first pallet, the second branch conveying line is used to convey the second pallet and the second electrode assembly carried on the second pallet, the first branch return line is used to reflow the first pallet, and the second branch return line is used to reflow the second pallet.

[0015] By adopting the above-mentioned method, the transportation of the first electrode assembly and the second electrode assembly is facilitated, and the automatic circulation of the first tray and the second tray is facilitated.

[0016] In some embodiments, the first branch conveyor line and the second branch conveyor line are arranged side by side in the horizontal direction, the first branch return line is located below the first branch conveyor line in the vertical direction, and the second branch return line is located below the second branch conveyor line in the vertical direction.

[0017] The above method is helpful to reduce the floor space occupied by the material conveying component.

[0018] In some embodiments, the battery processing equipment includes a transfer mechanism for transferring the first pallet on the first branch conveyor line to the first branch return line, and / or transferring the second pallet on the second branch conveyor line to the second branch return line.

[0019] In the above manner, the first branch return line can form a loop with the first branch conveyor line, and the first branch return line can form a loop with the second branch conveyor line, which is conducive to the automatic circulation of the first pallet and the second pallet.

[0020] In some embodiments, the transfer mechanism includes a transfer platform, a transfer conveyor belt, a belt driver and a platform driver. The transfer conveyor belt is arranged on the transfer platform. The belt driver drives the transfer conveyor belt to move to move the first pallet and / or the second pallet into or out of the transfer platform. The platform driver drives the transfer platform in a vertical direction so that the transfer platform can selectively dock with the first branch conveyor line or the first branch return line, and / or the transfer platform can selectively dock with the second branch conveyor line or the second branch return line.

[0021] In the above manner, by providing a belt drive to drive the transfer conveyor belt, the first pallet and / or the second pallet can be smoothly moved into or out of the transfer platform, thereby improving the efficiency of moving the first pallet and / or the second pallet into or out of the transfer platform. By providing a platform drive to drive the transfer platform in a vertical direction, the first pallet and the second pallet can be conveyed in the vertical direction, thereby facilitating the automatic circulation of the first pallet and the second pallet.

[0022] In some embodiments, the material conveying assembly further includes a main return line and a merging mechanism, the merging mechanism being configured to merge the first tray on the first branch return line and the second tray on the second branch return line to the main return line.

[0023] In the above manner, the first tray and the second tray are converged to the main return line and then transported to the loading position by the main return line, and then loaded with the electrode assembly, thereby realizing the recycling of the first tray and the second tray.

[0024] In some embodiments, the battery processing equipment further includes a detection component for detecting the first electrode assembly and the second electrode assembly, and the pairing component is configured to perform pairing based on the detection status of the first electrode assembly and the second electrode assembly.

[0025] The above method is helpful to improve the qualified rate of finished battery cells.

[0026] In some embodiments, the detection component includes a first detection conveyor line, a second detection conveyor line, a first detection mechanism, a second detection mechanism, and a detection loading mechanism. The detection loading mechanism picks up the first electrode assembly and the second electrode assembly from the material conveying component and places them on the first detection conveyor line and the second detection conveyor line, respectively. The first detection conveyor line conveys the first electrode assembly through the first detection mechanism, and the second detection conveyor line conveys the second electrode assembly through the second detection mechanism.

[0027] By adopting the above method, automatic detection of the first electrode assembly and the second electrode assembly can be achieved, which is beneficial to improving the qualified rate of finished products of battery cells.

[0028] In some embodiments, the material conveying assembly includes a first branch conveyor line and a second branch conveyor line, the first branch conveyor line is used to convey multiple first electrode assemblies, and the second branch conveyor line is used to convey multiple second electrode assemblies. The detection and loading mechanism includes a first detection and loading mechanism and a second detection and loading mechanism. The first detection and loading mechanism is used to pick up the first electrode assembly from the first branch conveyor line and place it on the first detection conveyor line, and the second detection and loading mechanism is used to pick up the second electrode assembly from the second branch conveyor line and place it on the second detection conveyor line. The picking and placing actions of the first detection and loading mechanism and the second detection and loading mechanism are relatively independent.

[0029] Through the above method, it is convenient to detect the first electrode assembly and the second electrode assembly separately, improve the accuracy of the movement paths of the first electrode assembly and the second electrode assembly, and improve the detection efficiency.

[0030] In some embodiments, the pairing assembly includes a pairing loading mechanism, a sorting mechanism, a stacking mechanism, and a first pairing conveyor line and a second pairing conveyor line arranged side by side. The pairing loading mechanism is configured to pick up the first electrode assembly and the second electrode assembly in pairs, and place them on the first pairing conveyor line and the second pairing conveyor line, respectively. The sorting mechanism is configured to pair the first electrode assembly and the second electrode assembly in a qualified state. The stacking mechanism is configured to stack the electrode body of the paired first electrode assembly and the electrode body of the second electrode assembly.

[0031] Through the above method, it is convenient to pair the first electrode assembly and the second electrode assembly in a one-to-one correspondence in the subsequent process.

[0032] In some embodiments, pairing includes directly using the first electrode assembly and the second electrode assembly picked up in pairs as the paired first electrode assembly and the second electrode assembly when both are in qualified state.

[0033] The above method is helpful to improve production efficiency.

[0034] In some embodiments, the battery processing equipment is provided with a non-conforming product recycling area, and the pairing includes sorting the non-conforming first electrode assembly and / or second electrode assembly to the non-conforming product recycling area when at least one of the first electrode assembly and the second electrode assembly picked up in a pair is in a non-conforming state.

[0035] The above-mentioned method is helpful to reduce the interference of the unqualified first electrode assembly and / or second electrode assembly on the pairing, thereby improving production efficiency.

[0036] In some embodiments, the battery processing equipment is provided with a first qualified product temporary storage area corresponding to the first electrode assembly and a second qualified product temporary storage area corresponding to the second electrode assembly, and the pairing includes sorting the first electrode assembly to the first qualified product temporary storage area and sorting the second electrode assembly in a qualified state to a non-qualified product recovery area when the first electrode assembly and the second electrode assembly picked up in a paired manner are in a qualified state and the second electrode assembly is in a non-qualified state, and the second electrode assembly does not exist in the second qualified product temporary storage area. Alternatively, when the first electrode assembly and the second electrode assembly picked up in a paired manner are in a non-qualified state and the second electrode assembly is in a qualified state, and the first electrode assembly does not exist in the first qualified product temporary storage area, sorting the first electrode assembly in a non-qualified state to the non-qualified product recovery area and sorting the second electrode assembly to the second qualified product temporary storage area.

[0037] By adopting the above-mentioned method, the interference of the unqualified first electrode assembly on the pairing can be reduced, thereby improving the production efficiency.

[0038] In some embodiments, the battery processing equipment is provided with a first qualified product temporary storage area corresponding to the first electrode assembly and a second qualified product temporary storage area corresponding to the second electrode assembly. Pairing includes when the first electrode assembly of the first electrode assembly and the second electrode assembly picked up in pairs is in a qualified state, the second electrode assembly is in an unqualified state, and the second electrode assembly exists in the second qualified product temporary storage area, then the unqualified second electrode assembly is sorted to the unqualified product recovery area, and the second electrode assembly in the second qualified product temporary storage area is moved back to the second pairing conveyor line. Alternatively, when the first electrode assembly of the first electrode assembly and the second electrode assembly picked up in pairs is in an unqualified state, the second electrode assembly is in a qualified state, and the first electrode assembly exists in the first qualified product temporary storage area, then the unqualified first electrode assembly is sorted to the unqualified product recovery area, and the first electrode assembly in the first qualified product temporary storage area is moved back to the first pairing conveyor line.

[0039] Through the above method, on the second pairing conveyor line, the qualified second electrode assembly can be replaced by the unqualified second electrode assembly, and on the first pairing conveyor line, the qualified first electrode assembly can be replaced by the unqualified first electrode assembly, which is beneficial to improving the qualified rate of finished products.

[0040] In some embodiments, the first pairing conveyor line and the second pairing conveyor line extend along a first horizontal direction and are arranged side by side along a second horizontal direction perpendicular to the first horizontal direction. The sorting mechanism includes a first sorting and picking mechanism, a second sorting and picking mechanism and a sorting drive mechanism. The sorting drive mechanism drives the first sorting and picking mechanism and the second sorting and picking mechanism along the second horizontal direction. The first sorting and picking mechanism and the second sorting and picking mechanism are configured to pick up the first electrode assembly and the second electrode assembly from the first pairing conveyor line and the second pairing conveyor line respectively.

[0041] Through the above method, the first sorting and picking mechanism and the second sorting and picking mechanism can respectively take the unqualified first electrode assembly and the second electrode assembly away from the first pairing conveyor line and the second pairing conveyor line, which is beneficial to improving the qualified rate of finished products.

[0042] In some embodiments, the non-conforming product recovery area includes a first recovery area located on the side of the first pairing conveyor line away from the second pairing conveyor line and a second recovery area located between the first pairing conveyor line and the second pairing conveyor line. The sorting drive mechanism is configured to drive the second sorting and picking mechanism to place the second electrode assembly in a non-conforming state in the second recovery area, and to drive the first sorting and picking mechanism to place the first electrode assembly in a non-conforming state in the first recovery area. The sorting drive mechanism is also configured to drive the first sorting and picking mechanism to pick up the second electrode assembly from the second recovery area and place it in the first recovery area.

[0043] Through the above-mentioned method, the first sorting and picking mechanism and the second sorting and picking mechanism can be prevented from interfering with each other, thereby improving the stability of the process of placing the unqualified first electrode assembly and / or second electrode assembly into the first recycling area.

[0044] In some embodiments, the first recycling zone includes a recycling conveyor belt for conveying the first electrode assembly and / or the second electrode assembly in an unqualified state.

[0045] By adopting the above-mentioned method, the interference of the unqualified first electrode assembly and / or second electrode assembly in the pairing process can be reduced.

[0046] In some embodiments, the first sorting and picking mechanism and / or the second sorting and picking mechanism respectively include a first sorting drive, a sorting bracket, a second sorting drive and two groups of sorting clamps, each group of sorting clamps includes a sorting claw and a third sorting drive, the first sorting drive is configured to drive the sorting bracket close to or away from the first pairing conveyor line or the second pairing conveyor line, the second sorting drive and the two groups of sorting clamps are arranged on the sorting bracket, the second sorting drive is configured to change the spacing between the two groups of sorting clamps along the length direction or width direction of the first electrode assembly or the second electrode assembly, and the third sorting drive is configured to drive the sorting claw to clamp the first electrode assembly or the second electrode assembly along the thickness direction of the first electrode assembly or the second electrode assembly.

[0047] Through the above method, the first electrode assembly or the second electrode assembly can be stably clamped.

[0048] In some embodiments, the pole ear portion of the first electrode assembly is close to a side surface of the electrode body of the first electrode assembly facing the first pairing conveyor line, and the pole ear portion of the second electrode assembly is close to a side surface of the electrode body of the second electrode assembly facing the second pairing conveyor line. The pairing assembly further includes a flipping mechanism, which is configured to flip the first of the first and second electrode assemblies, and the stacking mechanism is configured to stack the electrode body of the second of the first and second electrode assemblies on the electrode body of the first of the first and second electrode assemblies. Alternatively, the pole ear portion of the first electrode assembly is close to a side surface of the electrode body of the first electrode assembly away from the first pairing conveyor line, and the pole ear portion of the second electrode assembly is close to a side surface of the electrode body of the second electrode assembly away from the second pairing conveyor line. The pairing assembly further includes a flipping mechanism, which is configured to flip the first of the first and second electrode assemblies, and the stacking mechanism is configured to stack the flipped electrode body of the first of the first and second electrode assemblies on the electrode body of the second of the first and second electrode assemblies.

[0049] In the above manner, after the first electrode assembly and the second electrode assembly are stacked, the pole ear portion of the first electrode assembly can be made closer to the pole ear portion of the second electrode assembly, reducing the distance between the pole ear portion of the first electrode assembly and the pole ear portion of the second electrode assembly, thereby facilitating welding between the pole ear portion of the first electrode assembly and the pole ear portion of the second electrode assembly.

[0050] In some embodiments, the flipping mechanism includes a first flipping drive, a flipping bracket, a second flipping drive, a third flipping drive and a flipping clamp, each flipping clamp includes two flipping claws and a fourth flipping drive, the first flipping drive is configured to drive the flipping bracket to approach or move away from the first pairing conveyor line or the second pairing conveyor line, the second flipping drive, the third flipping drive and the flipping clamp are arranged on the flipping bracket, the second flipping drive is configured to change the spacing between the two flipping claws in the length direction or width direction of the first electrode assembly or the second electrode assembly, the fourth flipping drive is configured to drive the flipping claws to clamp the first electrode assembly or the second electrode assembly in the thickness direction of the first electrode assembly or the second electrode assembly, and the third flipping drive is configured to drive the flipping clamp to flip synchronously relative to the flipping bracket.

[0051] Through the above method, the stability of the flipping process can be maintained.

[0052] In some embodiments, the flipping bracket includes two cantilevers arranged side by side and at intervals, and a connecting arm connected between the two cantilevers. The flipping clamp is rotatably supported on the free ends of the two cantilevers respectively. The third flipping drive component includes a rotating motor, a transmission shaft, and two synchronous belts. The transmission shaft is rotatably supported on the connecting arm along the spacing direction of the two cantilevers. The rotating motor drives the transmission shaft to rotate, and the two ends of the transmission shaft are respectively connected to the corresponding flipping clamps through synchronous belts.

[0053] Through the above method, stable flipping of the first electrode assembly or the second electrode assembly can be achieved.

[0054] In some embodiments, the stacking mechanism includes a first stacking drive, a second stacking drive, a stacking bracket, a third stacking drive and a stacking clamp, each group of stacking clamps includes two stacking jaws and a fourth stacking drive, the first stacking drive drives the stacking bracket in the spacing direction of the first pairing conveyor line and the second pairing conveyor line, the second stacking drive is configured to drive the stacking bracket close to or away from the first pairing conveyor line or the second pairing conveyor line, the third stacking drive and the stacking clamp are arranged on the stacking bracket, the third stacking drive is configured to change the spacing between the two stacking jaws in the length direction or width direction of the first electrode assembly or the second electrode assembly, and the fourth stacking drive is configured to drive the stacking jaws to clamp the first electrode assembly or the second electrode assembly in the thickness direction of the first electrode assembly or the second electrode assembly.

[0055] Through the above method, the stability of the stacking process can be improved.

[0056] In some embodiments, the welding assembly includes a welding conveyor line, a welding positioning jig, and a welding mechanism. The welding positioning jig is used to clamp and fix the paired first electrode assembly and the second electrode assembly. The welding conveyor line sends the welding positioning jig into the welding mechanism, and the welding mechanism welds the pole ear portion of the first electrode assembly and the pole ear portion of the second electrode assembly clamped by the welding positioning jig to each other.

[0057] In the above manner, a welding conveyor line is provided to deliver the welding positioning jig into the welding mechanism, thereby improving welding efficiency.

[0058] In some embodiments, the pole ear portion includes a first pole ear portion and a second pole ear portion, the welding mechanism includes a first welding mechanism and a second welding mechanism, the welding conveyor line conveys the welding positioning fixture through the first welding mechanism and the second welding mechanism in sequence, the first welding mechanism is used to weld the first pole ear portion of the first electrode assembly and the first pole ear portion of the second electrode assembly to each other, and the second welding mechanism is used to weld the second pole ear portion of the first electrode assembly and the second pole ear portion of the second electrode assembly to each other.

[0059] Through the above method, on the one hand, the welding efficiency can be improved, and on the other hand, different welding conditions can be provided for the first pole lug portion and the second pole lug portion to meet different welding requirements of the first pole lug portion and the second pole lug portion.

[0060] In some embodiments, the battery processing equipment includes a coating device for an electrode assembly. The electrode assembly includes an electrode body, the electrode body having a first direction, a second direction, and a third direction orthogonal to each other, and including two main faces arranged opposite to each other along the first direction, two end faces arranged opposite to each other along the second direction, and two side faces arranged opposite to each other along the third direction, and the coating equipment includes a first positioning component and a first coating component. The first positioning component is configured to position the electrode assembly and keep the two main faces at least partially exposed. The first coating component is configured to position the coating film, wherein the coating film includes two main coating areas spaced apart from each other and a connecting area connected between the two main coating areas. At least one of the first positioning component and the first coating component is configured to drive the electrode assembly and the coating film to move relative to each other so that the connecting area contacts and coats the first of the two end faces, and the two main coating areas contact and coat the exposed portion of the corresponding one of the two main faces.

[0061] Through the above method, the relative position relationship between the electrode assembly and the coating film can be adjusted. When the coating film covers the two main surfaces and the first of the two end surfaces of the electrode body, continuous coating of the two main surfaces and the first of the two end surfaces is achieved, which can improve the stability of the coating process and make the coating action more simple and smooth.

[0062] In some embodiments, the electrode assembly further includes a pole ear portion protruding from the first of the two end surfaces, an opening is provided on the connection area, and the pole ear portion is configured to pass through the opening as the electrode assembly and the coating film move relative to each other.

[0063] In the above manner, the opening can avoid the pole ear portion, which can reduce the interference of the pole ear portion on the coating process, thereby improving the coating effect of the coating film on the first of the two end faces.

[0064] In some embodiments, the covering film includes a side covering area connected to the main covering area, and the covering device further includes a second covering component configured to contact the side covering area and cover the side surface.

[0065] In the above manner, by providing the second covering component to cover the side covering area on the side surface, the covering effect of the covering film on the electrode body can be improved.

[0066] In some embodiments, the covering film includes an end covering region connected to the main covering region, and the second covering component is configured to contact the transmission end covering region and cover the second of the two end surfaces.

[0067] By adopting the above-mentioned method, the coating effect of the coating film on the electrode body can be improved.

[0068] In some embodiments, the coating film also includes a side coating area and an end coating area connected to the main coating area, wherein the side coating area is coated on the side surface and the end coating area is coated on the second of the two end surfaces. The coating device also includes a first tape attaching assembly, which is used to drive the electrode assembly and the first tape to move relative to each other. The first tape includes a first part and a second part connected to each other. The first tape attaching assembly is arranged to attach the first part of the first tape to the side coating area and the second part of the first tape to the end coating area at the corner formed by the side surface and the second of the two end surfaces.

[0069] In this way, the first adhesive tape can connect the side covering area and the end covering area together, so that the side covering area and the end covering area can remain fixed relative to the electrode body, thereby improving the coating firmness of the coating film on the electrode body.

[0070] In some embodiments, the coating device also includes a second tape attaching assembly, which is used to drive the electrode assembly and the second tape to move relative to each other, and the second tape includes a first part and a second part connected to each other. The second tape attaching assembly is arranged to attach the first part of the second tape to the main coating area and the second part of the second tape to the side coating area at the corner formed by the side and the main surface.

[0071] By means of the above method, the side covering area and the main covering area can be kept fixed relative to the electrode body, thereby improving the coating firmness of the electrode body by the covering film.

[0072] In some embodiments, the number of the first parts of the second tape is two and they are located at both ends of the second part of the second tape. The second tape attaching assembly is configured to attach the two first parts of the second tape to corresponding ones of the two main covering areas respectively.

[0073] By adopting the above-mentioned method, the contact area between the second adhesive tape and the covering film can be increased, thereby improving the fixing effect of the opposite covering area.

[0074] In a second aspect, the present application provides a battery processing method, comprising: controlling a material conveying assembly to convey a first electrode assembly and a second electrode assembly, wherein the first electrode assembly and the second electrode assembly each include an electrode body and a tab portion disposed on the electrode body; controlling a pairing assembly to pair the first electrode assembly and the second electrode assembly so that the electrode body of the first electrode assembly and the electrode body of the second electrode assembly overlap each other; and controlling a welding assembly to weld the tab portions of the paired first electrode assembly and the second electrode assembly to each other.

[0075] In some embodiments, controlling the pairing assembly to pair the first electrode assembly and the second electrode assembly includes: controlling the pairing loading mechanism to pick up the first electrode assembly and the second electrode assembly in pairs and place them on the first inspection conveyor line and the second inspection conveyor line, respectively; controlling the sorting mechanism to pair the first electrode assembly and the second electrode assembly in a qualified state; and controlling the stacking mechanism to stack the paired electrode bodies of the first electrode assembly and the second electrode assembly.

[0076] In some embodiments, controlling the sorting mechanism to pair the first electrode assembly and the second electrode assembly in a qualified state includes: when the first electrode assembly and the second electrode assembly picked up in pairs are both in a qualified state, the first electrode assembly and the second electrode assembly picked up in pairs are used as the paired first electrode assembly and the second electrode assembly.

[0077] In some embodiments, the battery processing equipment is provided with a non-conforming product recovery area. The control sorting mechanism is configured to pair the first electrode assembly and the second electrode assembly in a qualified state, including: when at least one of the first electrode assembly and the second electrode assembly picked up in a paired manner is in a non-conforming state, sorting the non-conforming first electrode assembly and / or the non-conforming second electrode assembly to the non-conforming product recovery area.

[0078] In some embodiments, the battery processing equipment is provided with a first qualified product temporary storage area corresponding to the first electrode assembly and a second qualified product temporary storage area corresponding to the second electrode assembly, and the control sorting mechanism is configured to pair the first electrode assembly and the second electrode assembly in a qualified state, including: when the first electrode assembly of the first electrode assembly and the second electrode assembly picked up in a pair is in a qualified state and the second electrode assembly is in an unqualified state, and the second electrode assembly does not exist in the second qualified product temporary storage area, the first electrode assembly is sorted to the first qualified product temporary storage area, and the unqualified second electrode assembly is sorted to the unqualified product recovery area. When the first electrode assembly of the first electrode assembly and the second electrode assembly picked up in a pair is in an unqualified state and the second electrode assembly is in a qualified state, and the first electrode assembly does not exist in the first qualified product temporary storage area, the unqualified first electrode assembly is sorted to the unqualified product recovery area, and the second electrode assembly is sorted to the second qualified product temporary storage area.

[0079] In some embodiments, the battery processing equipment is provided with a first qualified product temporary storage area corresponding to the first electrode assembly and a second qualified product temporary storage area corresponding to the second electrode assembly. The control sorting mechanism is configured to pair the first electrode assembly and the second electrode assembly in a qualified state, including: when the first electrode assembly of the first electrode assembly and the second electrode assembly picked up in pairs is in a qualified state and the second electrode assembly is in an unqualified state, and the second electrode assembly exists in the second qualified product temporary storage area, the unqualified second electrode assembly is sorted to the unqualified product recovery area, and the second electrode assembly in the second qualified product temporary storage area is moved back to the second pairing conveyor line. When the first electrode assembly of the first electrode assembly and the second electrode assembly picked up in pairs is in an unqualified state and the second electrode assembly is in a qualified state, and the first electrode assembly exists in the first qualified product temporary storage area, the unqualified first electrode assembly is sorted to the unqualified product recovery area, and the first electrode assembly in the first qualified product temporary storage area is moved back to the first pairing conveyor line.

[0080] In some embodiments, controlling the welding assembly to weld the paired tab portions of the first electrode assembly and the second electrode assembly to each other includes: controlling a jig adjustment mechanism to adjust a welding positioning jig to clamp and secure the paired first and second electrode assemblies; controlling a welding conveyor line to feed the welding positioning jig into the welding mechanism; and controlling the welding mechanism to weld the tab portions of the first and second electrode assemblies clamped by the welding positioning jig to each other.

[0081] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

Brief Description of the Drawings

[0082] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0083] FIG1 is a schematic structural diagram of a vehicle to which an electrode assembly according to one or more embodiments is applied;

[0084] FIG2 is a schematic diagram of an exploded structure of a battery in which an electrode assembly is located according to one or more embodiments;

[0085] FIG3 is a schematic diagram of an exploded structure of a battery cell in which an electrode assembly is located according to one or more embodiments;

[0086] FIG4 is a schematic diagram of a partial structure of an electrode assembly according to one or more embodiments;

[0087] FIG5 is a simplified schematic diagram of the structure of a battery processing device according to one or more embodiments;

[0088] 6 is a schematic structural diagram of a first electrode assembly and a second electrode assembly after welding according to one or more embodiments;

[0089] FIG7 is a partial structural diagram of a material conveying assembly according to one or more embodiments;

[0090] FIG8 is a schematic structural diagram of a docking transfer mechanism of a material conveying assembly according to one or more embodiments;

[0091] FIG9 is a schematic structural diagram of a transfer mechanism according to one or more embodiments;

[0092] FIG10 is a schematic diagram of the structure of a pairing component according to one or more embodiments;

[0093] FIG11 is a schematic diagram of an installation structure of a stacking mechanism according to one or more embodiments;

[0094] FIG12 is a schematic structural diagram of part B of the matching assembly shown in FIG10 ;

[0095] FIG13 is a schematic structural diagram of part C of the mounting structure of the stacking mechanism shown in FIG11;

[0096] FIG14 is a simplified schematic diagram of the structure of a flipping mechanism according to one or more embodiments;

[0097] 15 is a schematic structural diagram of a first positioning assembly and a first covering assembly transmitting a covering film and an electrode assembly according to one or more embodiments;

[0098] FIG16 is a simplified schematic diagram of the structure of the first positioning assembly and the first covering assembly transmitting the covering film and the electrode assembly according to one or more embodiments;

[0099] FIG17 is a schematic diagram of a process of coating an electrode assembly with a coating film according to one or more embodiments;

[0100] FIG18 is a schematic structural diagram of a first positioning assembly according to one or more embodiments;

[0101] FIG19 is a schematic diagram of a partial structure of a first covering component according to one or more embodiments;

[0102] FIG20 is a schematic structural diagram of a second positioning assembly positioning an electrode assembly according to one or more embodiments;

[0103] FIG21 is a bottom view of the second positioning assembly according to one or more embodiments;

[0104] FIG22 is a schematic structural diagram of a second coating assembly transmission coating film and an electrode assembly according to one or more embodiments;

[0105] FIG23 is a schematic structural diagram of a second covering assembly according to one or more embodiments;

[0106] FIG24 is a schematic diagram of the partial structure of the transmission coating film and the electrode assembly of the second coating assembly shown in FIG12;

[0107] FIG25 is a schematic structural diagram of the coating film and electrode assembly shown in FIG12;

[0108] FIG26 is a simplified schematic diagram of the structure of a coating device according to one or more embodiments;

[0109] FIG27 is a schematic structural diagram of a covering film and an electrode assembly attached with a first tape and a second tape according to one or more embodiments;

[0110] FIG28 is a schematic structural diagram of a first tape applying assembly according to one or more embodiments;

[0111] FIG29 is a schematic diagram of the coordinated structure of the first unwinding mechanism, the first adhesive feeding mechanism, and the first adhesive tape roll according to one or more embodiments;

[0112] FIG30 is a schematic structural diagram of a first glue-dispensing mechanism according to one or more embodiments;

[0113] FIG31 is a partial structural diagram of a first glue pulling mechanism according to one or more embodiments;

[0114] FIG32 is a schematic structural diagram of a first cutting mechanism according to one or more embodiments;

[0115] FIG33 is a schematic diagram showing a structure in which a first adhesive removal member absorbs a first adhesive tape according to one or more embodiments;

[0116] FIG34 is a schematic diagram of the matching structure of the second tape applying assembly and the electrode assembly according to one or more embodiments;

[0117] FIG35 is a schematic diagram of the coordinated structure of the second unwinding mechanism, the second cutting mechanism, the second adhesive tape roll, and the second adhesive feeding mechanism according to one or more embodiments;

[0118] FIG36 is a schematic structural diagram of a second glue pulling mechanism according to one or more embodiments;

[0119] FIG37 is a schematic diagram showing the structure of a second adhesive-taking mechanism adsorbing a second adhesive tape according to one or more embodiments;

[0120] FIG38 is a schematic diagram of the partial structure of the second adhesive-taking mechanism shown in FIG27 adsorbing the second adhesive tape;

[0121] FIG39 is a schematic structural diagram of a second cutting mechanism according to one or more embodiments;

[0122] FIG40 is a schematic structural diagram of a third positioning assembly positioning an electrode assembly according to one or more embodiments;

[0123] FIG41 is a schematic structural diagram of an electrode assembly according to one or more embodiments.

[0124] Reference numerals in the specific embodiments are as follows: 1000a vehicle; 100a battery; 200a controller; 300a motor; 10a housing; 11a first sub-housing; 12a second sub-housing; 101b storage space; 1 battery cell; 100 housing; 110 storage case; 112 opening; 120 end cap; 200 electrode assembly; 201 pole ear portion; 210 electrode body; 211 main surface; 212a first of two end surfaces; 212b second of two end surfaces; 212 end surface; 213 side surface; 220 electrode body portion; 221 positive electrode sheet 221; 222 separator 222; 223 negative electrode sheet 223; 230 fixing member; 250 first electrode assembly; 251 second electrode assembly; 261 first pole ear portion; 262 second pole ear portion; 300 Coating equipment; 301 Coating film loading mechanism; 302 Electrode assembly unloading mechanism; 303 Fixture conveyor line; 304 Robot track; 305 Dust removal mechanism; 310 First positioning assembly; 311 Electrode clamp; 312 Electrode transmission mechanism; 313 Electrode clamping cylinder; 3131 Electrode clamping jaw; 314 Electrode transmission motor; 3141 First electrode support; 3142 Second electrode support; 330 First coating assembly; 331 First sub-coating assembly; 332 Membrane clamp; 333 First membrane transmission mechanism; 334 Second membrane transmission mechanism; 335 Third membrane transmission mechanism; 336 Membrane clamping cylinder; 337 First membrane transmission motor; 3371 First membrane support; 338 Membrane clamping jaw; 339 Fourth membrane support; 340 Second membrane transmission motor; 341 Third membrane transmission motor; 342 Second membrane support; 343 Third membrane support; 350 Second positioning assembly; 351 Fixed bracket; 353 Limiting member; 354 ​​Limiting gap; 355 Elastic member; 356 Hook plate; 357 Rotating member; 360 Third positioning assembly; 361 Main holding cylinder; 362 Main holding member; 363 Side holding cylinder; 364 Side holding member; 365 Flip motor; 366 Rotating bracket; 367 Shifting motor; 368 Shifting bracket; 370 Second covering assembly; 371 Side pressure plate; 372 First pressure plate transmission mechanism; 373 Second pressure plate transmission mechanism; 374 End pressure plate; 3741 End limiting block; 3711 Side limiting block; 375 Third pressure plate transmission mechanism; 376 First pressure plate cylinder; 3761 Second pressure plate cylinder; 377 Pressure plate transmission motor; 378 First pressure plate bracket; 379 Second pressure plate bracket; 380 first adhesive tape attaching assembly; 381 first unwinding mechanism; 382 first adhesive pulling mechanism; 3821 first adhesive clamping cylinder; 3822 first adhesive pulling motor; 3823 first adhesive clamping component; 383 first cutting mechanism; 3831 first pressure block; 3832 first cutter; 3833 first cutting cylinder; 384 first adhesive tape roll; 385 switching mechanism; 3851 material roll holder; 3852 switching motor; 386 first adhesive dispensing mechanism; 3861 first adhesive dispensing component; 3862 first adhesive dispensing motor;3863 Second glue dispensing motor; 3864 First glue dispensing bracket; 3865 Second glue dispensing bracket; 3866 First glue dispensing unit; 3867 Second glue dispensing unit; 3868 Third glue dispensing bracket; 3869 Glue dispensing cylinder; 387 First glue feeding mechanism; 390 Second adhesive tape attaching assembly; 391 Second unwinding mechanism; 392 Second adhesive drawing mechanism; 3921 Second adhesive clamping cylinder; 3922 Second adhesive drawing motor; 3923 Second adhesive clamping member; 393 Second cutting mechanism; 3931 Second pressing block; 3932 Second cutter; 3933 Second cutting cylinder; 394 Adhesive drawing bracket; 3941 Adhesive drawing transposition cylinder; 3942 Adhesive drawing transposition bracket; 395 Second adhesive dispensing mechanism; 3951 Second adhesive dispensing member; 3952 Fourth adhesive dispensing motor; 3953 Fourth adhesive dispensing bracket; 3954 Third adhesive dispensing unit; 3955 Fourth adhesive dispensing unit; 3956 Adhesive dispensing transposition cylinder; 3957 Adhesive dispensing transposition bracket; 396 Second adhesive tape roll; 397 Second adhesive feeding mechanism; 400 Coating film; 410 Main coating area; 420 Connecting area; 421 Opening; 430 Side coating area; 440 End coating area; 511 First portion of first adhesive tape; 512 Second portion of first adhesive tape; 510 First adhesive tape; 521 First portion of second adhesive tape; 522 Second portion of second adhesive tape; 520 Second adhesive tape; 600 Battery processing equipment; 610 Material conveying assembly; 611 First branch conveyor line; 612 Second branch conveyor line; 613 Main conveyor line; 614 Diverter mechanism; 615 First connection point; 616 Second connection point; 617 Diverter detection member; 618 Diverter member; 619 Diverter driver; 620 First branch return line; 621 Second branch return line; 622 Main return line; 623 Converging mechanism; 630 Pairing assembly; 631 Pairing feeding mechanism; 632 Sorting mechanism; 6321 First sorting and picking mechanism; 6322 Second sorting and picking mechanism; 6323 Sorting drive mechanism; 6324 First sorting drive member; 6325 Sorting bracket; 6326 Second sorting drive member; 6327 Sorting fixture; 6328 Sorting claw; 6329 Third sorting drive member; 633 Stacking mechanism; 6331 First stacking drive member; 6332 Second stacking drive member; 6333 Stacking bracket; 6334 Third stacking drive member; 6335 Stacking fixture; 6336 Stacking claw; 6337 Fourth stacking drive member; 634 First pairing conveyor line; 635 Second pairing conveyor line; 636 Flipping mechanism; 6361 First flipping drive member; 6362 Flipping bracket; 6363 Second flipping drive member; 6364 Third flipping drive member; 6365 Flipping fixture; 6366 Flipping jaw; 6367 Fourth flipping drive member; 6368 Cantilever; 6369 Connecting arm; 6370 Rotating motor; 6371 Drive shaft; 6372 Synchronous belt; 660 Transfer mechanism; 661 First pallet; 662 Second pallet; 663 Transfer platform; 664 Transfer conveyor belt; 665 Belt drive member; 666 Platform drive member;670 Inspection assembly; 671 First inspection conveyor line; 672 Second inspection conveyor line; 673 First inspection mechanism; 674 Second inspection mechanism; 675 Inspection loading mechanism; 676 First inspection loading mechanism; 677 Second inspection loading mechanism; 680 Rejected product recovery area; 681 First qualified product temporary storage area; 682 Second qualified product temporary storage area; 683 First recovery area; 684 Second recovery area; 685 Recovery conveyor belt; 690 Welding assembly; 691 Welding conveyor line; 692 Welding positioning fixture; 693 Welding mechanism; 6931 First welding mechanism; 6932 Second welding mechanism; D1 First direction; D2 Second direction; D3 Third direction; D7 Horizontal direction; D8 Vertical direction; D7a First horizontal direction; D7b Second horizontal direction; D9 Spacing direction between two cantilevers; D10 Spacing direction between first and second paired conveyor lines. [Specific implementation method]

[0125] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0126] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0127] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0128] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0129] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0130] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0131] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the 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, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0132] In the description of the embodiments of this application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood broadly. For example, these terms may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this application based on specific circumstances.

[0133] With the advancement of battery technology, batteries are being used in a growing number of fields and are gradually replacing traditional fossil fuels in the automotive powertrain sector. Batteries store chemical energy and controllably convert it into electrical energy. In recyclable batteries, after discharge, the active materials can be activated by recharging for continued use.

[0134] Battery cells often include a housing and two electrode assemblies housed within it. During battery assembly, the two electrode assemblies must be placed within the housing. However, existing battery processing equipment presents difficulties in inserting the two electrode assemblies into the housing, resulting in low production efficiency.

[0135] To improve the production efficiency of battery cells, a material conveying assembly is provided to enable the first and second electrode assemblies to move close to the mating assembly and welding assembly after loading. The mating assembly is provided to mate the first and second electrode assemblies and to stack the electrode bodies of the first and second electrode assemblies, thereby achieving alignment of the first and second electrode assemblies. The welding assembly is provided to weld the paired tabs of the first and second electrode assemblies to each other, thereby achieving a stable connection between the first and second electrode assemblies.

[0136] Based on the above considerations, the present application provides battery processing equipment and processing methods. The battery processing equipment includes a material conveying assembly, a matching assembly and a welding assembly. The material conveying assembly is used to convey the first electrode assembly and the second electrode assembly, wherein the first electrode assembly and the second electrode assembly respectively include an electrode body and a pole ear portion provided on the electrode body. The matching assembly is used to match the first electrode assembly and the second electrode assembly so that the electrode body of the first electrode assembly and the electrode body of the second electrode assembly are superimposed on each other. The welding assembly is used to weld the pole ear portion of the paired first electrode assembly and the pole ear portion of the second electrode assembly to each other. In this way, the first electrode assembly and the second electrode assembly can be moved close to the matching assembly and the welding assembly after loading. By setting the matching assembly to pair the first electrode assembly and the second electrode assembly and to weld the pole ear portion of the paired first electrode assembly and the pole ear portion of the second electrode assembly to each other, it is convenient to assemble the first electrode assembly and the second electrode assembly into the shell in the subsequent process, so as to improve the production efficiency of the battery cell.

[0137] The battery processing equipment and processing method disclosed in the embodiments of the present application are used to coat the electrode assembly with a coating film, and the electrode assembly and the coating film are arranged on the battery. The battery can be used in an electrical device that uses the battery as a power source or various energy storage systems that use the battery as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0138] For the convenience of description, the following embodiments are described by taking a vehicle 1000a as an example of an electrical device according to an embodiment of the present application.

[0139] Referring to Figure 1, vehicle 1000a can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A battery 100a is provided inside vehicle 1000a. Battery 100a can be provided at the bottom, head, or tail of vehicle 1000a. Battery 100a can be used to power vehicle 1000a. For example, battery 100a can serve as an operating power source for vehicle 1000a. Vehicle 1000a can also include a controller 200a and a motor 300a. Controller 200a is used to control battery 100a to power motor 300a, for example, to meet the power requirements for starting, navigating, and driving the vehicle 1000a.

[0140] In some embodiments of the present application, the battery 100a can serve not only as an operating power source for the vehicle 1000a, but also as a driving power source for the vehicle 1000a, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000a.

[0141] In some embodiments, the battery 100a may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0142] The battery 100 a mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells 1 to provide higher voltage and capacity.

[0143] In the embodiment of the present application, the battery cell 1 may be a secondary battery, which refers to a battery cell 1 that can be recharged to activate the active material after discharge and continue to be used. Each battery cell 1 may also be a primary battery.

[0144] The battery cell 1 includes, but is not limited to, a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc. The battery cell 1 may be cylindrical, flat, rectangular, or have other shapes.

[0145] In some embodiments, the battery 100 a may be a battery module. When there are multiple battery cells 1 , the multiple battery cells 1 are arranged and fixed to form a battery module.

[0146] In some embodiments, referring to FIG. 2 , the battery 100 a may be a battery pack, which includes a housing 10 a and battery cells 1 . The battery cells 1 or battery modules are housed in the housing 10 a .

[0147] In some embodiments, the box 10a can serve as part of the chassis structure of the vehicle 1000a. For example, a portion of the box 10a can become at least a portion of the floor of the vehicle 1000a, or a portion of the box 10a can become at least a portion of the cross member and longitudinal member of the vehicle 1000a.

[0148] Referring to Figure 2 , battery 100a includes a housing 10a and a battery cell 1, with the battery cell 1 housed within the housing 10a. The housing 10a provides a storage space 101b for the battery cell 1 and can employ a variety of structures. In some embodiments, the housing 10a can include a first sub-housing 11a and a second sub-housing 12a, which overlap each other and together define a storage space 101b for the battery cell 1. The second sub-box 12a can be a hollow structure with one end open, and the first sub-box 11a can be a plate-like structure. The first sub-box 11a covers the open side of the second sub-box 12a, so that the first sub-box 11a and the second sub-box 12a together define the storage space 101b. The first sub-box 11a and the second sub-box 12a can also be hollow structures with one end open, with the open side of the first sub-box 11a covering the open side of the second sub-box 12a. Of course, the box 10a formed by the first sub-box 11a and the second sub-box 12a can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0149] In battery 100a, there may be multiple battery cells 1, which may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections within the battery cells 1. Multiple battery cells 1 may be directly connected in series, in parallel, or in a hybrid configuration, and then the entire battery cell 1 may be housed within the housing 10a. Alternatively, battery 100a may comprise multiple battery cells 1 connected in series, in parallel, or in a hybrid configuration to form a battery module, which is then further connected in series, in parallel, or in a hybrid configuration to form a single unit housed within the housing 10a. Battery 100a may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 1.

[0150] Referring to Figure 3 , a battery cell 1 is the smallest unit of a battery. In this embodiment, a cylindrical battery cell 1 is used as an example. As shown in Figure 3 , the battery cell 1 includes a housing 100 , an electrode assembly 200 , and other functional components.

[0151] In some embodiments, the housing 100 is used to encapsulate the electrode assembly 200 and the electrolyte and other components. The housing 100 can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film.

[0152] The housing 100 may include an end cap 120 and a containment shell 110. The end cap 120 is a component that covers the opening of the containment shell 110 to isolate the internal environment of the battery cell 1 from the external environment. The shape of the end cap 120 can be adapted to the shape of the containment shell 110 to match the containment shell 110. Optionally, the end cap 120 can be made of a material with a certain hardness and strength (such as an aluminum alloy). This makes the end cap 120 less susceptible to deformation when subjected to compression or collision, thereby providing the battery cell 1 with greater structural strength and improved safety. The end cap 120 may be provided with functional components such as a terminal. The terminal can be used to electrically connect to the electrode assembly 200 for outputting or inputting electrical energy into or out of the battery cell 1. In some embodiments, the end cap 120 may also be provided with a pressure relief mechanism for relieving internal pressure when the internal pressure or temperature of the battery cell 1 reaches a threshold. The end cap 120 may also be made of a variety of materials, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating component may be provided inside the end cap 120 to isolate the electrical connection components in the housing 110 from the end cap 120 to reduce the risk of short circuit. For example, the insulating component may be made of plastic, rubber, or the like.

[0153] The containment shell 110 is a component that cooperates with the end cap 120 to form the internal environment of the battery cell 1. This internal environment can be used to accommodate the electrode assembly 200, electrolyte, and other components. The containment shell 110 and the end cap 120 can be separate components. When connected, the containment shell 110 and the end cap 120 form the internal environment of the battery cell 1. Alternatively, the end cap 120 and the containment shell 110 can be integrated. Specifically, the end cap 120 and the containment shell 110 can form a common connection surface before other components are inserted into the shell. When the interior of the containment shell 110 needs to be sealed, the end cap 120 is then placed over the containment shell 110. The containment shell 110 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylinder, or a hexagonal prism. Specifically, the shape of the containment shell 110 can be determined based on the specific shape and size of the electrode assembly 200. The containment shell 110 can be made of a variety of materials, including but not limited to copper, iron, aluminum, stainless steel, and aluminum alloys.

[0154] The electrode assembly 200 is a component where electrochemical reactions occur in the battery cell 1. One or more electrode assemblies 200 may be contained in the housing 110.

[0155] In some embodiments, the electrode assembly 200 includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell 1, active ions (e.g., lithium ions) are intercalated and released between the positive and negative electrodes. The separator is positioned between the positive and negative electrodes to prevent short circuits between the positive and negative electrodes while allowing the active ions to pass through. As shown in FIG4 , the separator can be a diaphragm 222.

[0156] In some embodiments, as shown in FIG. 4 , the positive electrode may be a positive electrode sheet 221 . The positive electrode sheet 221 may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0157] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is provided on either or both of the two facing surfaces of the positive electrode current collector.

[0158] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0159] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides and their respective modified compounds. However, the present application is not limited to these materials, and other traditional materials that can be used as battery positive electrode active materials may also be used. These positive electrode active materials may be used alone or in combination of two or more. Among them, examples of lithium-containing phosphates may include but are not limited to at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnPO4), a composite material of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and a composite material of lithium iron manganese phosphate and carbon. Examples of lithium transition metal oxides may include but are not limited to lithium cobalt oxide (such as LiCoO2), lithium nickel oxide (such as LiNiO2), lithium manganese oxide (such as LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (such as LiNi 1 / 3 Co 1 / 3 Mn 1 / 3 O2 (also referred to as NCM 333 ), LiNi 0.5 Co 0.2 Mn 0.3O2 (also referred to as NCM 523 ), LiNi 0.5 Co 0.25 Mn 0.25 O2 (also referred to as NCM 211 ), LiNi 0.6 Co 0.2 Mn 0.2 O2 (also referred to as NCM 622 ), LiNi 0.8 Co 0.1 Mn 0.1 O2 (also referred to as NCM 811 ), lithium nickel cobalt aluminum oxide (such as LiNi 0.85 Co 0.15 Al 0.05 O2) and at least one of its modified compounds, etc.

[0160] In some embodiments, as shown in FIG. 4 , the negative electrode may be a negative electrode plate 223 , and the negative electrode plate 223 may include a negative electrode current collector.

[0161] As an example, the negative electrode current collector may be a metal foil, a metal foam, a composite current collector, or a carbon foam. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, a carbon electrode, carbon, nickel, or titanium, etc. may be used. The metal foam may be nickel foam, copper foam, aluminum foam, or an alloy foam. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver, or silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0162] As an example, the negative electrode sheet 223 may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0163] As an example, the negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is provided on either or both of the two facing surfaces of the negative electrode current collector.

[0164] As an example, the negative electrode active material may adopt the negative electrode active material for battery cell 1 that is well known in the art. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0165] In some embodiments, the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.

[0166] In some embodiments, the electrode assembly 200 further includes a separator disposed between the positive electrode and the negative electrode.

[0167] In some embodiments, the separator is a membrane 222. The present application has no particular limitation on the type of the membrane 222, and any known porous membrane 222 with good chemical and mechanical stability can be selected.

[0168] As an example, the primary material of separator 222 can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. Separator 222 can be a single-layer film or a multi-layer composite film, without particular limitation. When separator 222 is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a separate component positioned between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes.

[0169] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transport ions and isolate the positive and negative electrodes.

[0170] In some embodiments, the battery cell 1 further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This application does not specifically limit the type of electrolyte, and the electrolyte may be selected based on needs. The electrolyte may be liquid, gel, or solid.

[0171] The electrolyte may be a form of electrolyte and may include an electrolyte salt and a solvent.

[0172] In some embodiments, the electrolyte salt may be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorooxalatoborate, lithium dioxalatoborate, lithium difluorodioxalatophosphate, and lithium tetrafluorooxalatophosphate.

[0173] In some embodiments, the solvent can be selected from at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methylpropyl carbonate, ethylpropyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, cyclopentane, dimethyl sulfone, methyl ethyl sulfone and diethyl sulfone. The solvent can also be an ether solvent. Ether solvents can include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyltetrahydrofuran, diphenyl ether and crown ether.

[0174] Among them, the gel electrolyte includes a skeleton network with a polymer as the electrolyte, combined with an ionic liquid-lithium salt.

[0175] Among them, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0176] As an example, the polymer solid electrolyte may be polyether, polysiloxane, polycarbonate, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, a single ion polymer, polyionic liquid-lithium salt, cellulose, etc. As an example, the polymer solid electrolyte may be polyethylene oxide.

[0177] As an example, the inorganic solid electrolyte can be an oxide solid electrolyte (crystalline perovskite, sodium superconducting ion conductor, garnet, amorphous LiPON film), a sulfide solid electrolyte (crystalline lithium superion conductor (lithium germanium phosphosulfide, silver germanium sulfide), amorphous sulfide) and one or more of a halide solid electrolyte, a nitride solid electrolyte and a hydride solid electrolyte.

[0178] As an example, a composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.

[0179] In some embodiments, the electrode assembly 200 is a wound structure, wherein the positive electrode sheet 221 and the negative electrode sheet 223 are wound into a wound structure.

[0180] In some embodiments, the electrode assembly 200 is provided with a tab portion 201 that can conduct current from the electrode assembly 200. The tab portion 201 includes a positive tab and a negative tab. The positive tab and the negative tab can be located together at one end of the electrode body or at two ends of the electrode body.

[0181] According to some embodiments of the present application, as shown in Figures 5 and 6, a battery processing device 600 described in the battery processing device embodiment of the present application includes a material conveying assembly 610, a mating assembly 630, and a welding assembly 690. The material conveying assembly 610 is used to convey the first electrode assembly 250 and the second electrode assembly 251, wherein the first electrode assembly 250 and the second electrode assembly 251 respectively include an electrode body 220 and a pole ear portion 201 disposed on the electrode body portion 220. The mating assembly 630 is used to mate the first electrode assembly 250 and the second electrode assembly 251 so that the electrode body portion 220 of the first electrode assembly 250 and the electrode body portion 220 of the second electrode assembly 251 are stacked on each other. The welding assembly 690 is used to weld the pole ear portion 201 of the first electrode assembly 250 and the pole ear portion 201 of the second electrode assembly 251 to each other.

[0182] After the electrode body 220 of the first electrode assembly 250 and the electrode body 220 of the second electrode assembly 251 are stacked, the tabs 201 of the first electrode assembly 250 and the tabs 201 of the second electrode assembly 251 are positioned relative to each other, facilitating welding. A battery cell 1 may include an electrode assembly 200. After welding the tabs 201 of the first and second electrode assemblies 250 and 251, the electrode assembly 200 is obtained. Furthermore, the first and second electrode assemblies 250 and 251 can be connected in series or in parallel via the tabs 201.

[0183] By providing the material conveying assembly 610, the first electrode assembly 250 and the second electrode assembly 251 can be moved toward the mating assembly 630 and the welding assembly 690 after loading. By providing the mating assembly 630 to mate the first electrode assembly 250 and the second electrode assembly 251, alignment of the first electrode assembly 250 and the second electrode assembly 251 can be achieved, facilitating the subsequent welding of the electrode lugs 201 and the assembly of the first electrode assembly 250 and the second electrode assembly 251 into the housing 100. By providing the welding assembly 690 to weld the paired electrode lugs 201 of the first electrode assembly 250 and the second electrode assembly 251 to each other, a stable connection can be achieved between the first electrode assembly 250 and the second electrode assembly 251, facilitating the subsequent assembly of the first electrode assembly 250 and the second electrode assembly 251 into the housing 100, and improving the production efficiency of the battery cell 1.

[0184] The electrode assembly 200 may include two electrode main bodies 220, which are respectively formed from a first electrode assembly 250 and a second electrode assembly 251. The two electrode main bodies 220 are stacked to form an electrode body 210. As shown in FIG4 , the electrode main body 220 may include a positive electrode sheet 221, a separator 222, and a negative electrode sheet 223 arranged in sequence.

[0185] Optionally, the first electrode assembly 250 and the second electrode assembly 251 may be the same or different.

[0186] According to some embodiments of the present application, optionally, as shown in Figures 5 and 7, the material conveying assembly 610 includes a first branch conveying line 611 and a second branch conveying line 612, the first branch conveying line 611 is used to convey multiple first electrode assemblies 250, and the second branch conveying line 612 is used to convey multiple second electrode assemblies 251.

[0187] By setting up the first branch conveying line 611 and the second branch conveying line 612 to respectively convey the first electrode assembly 250 and the second electrode assembly 251, it is convenient to manage and operate the first electrode assembly 250 and the second electrode assembly 251 respectively, which is beneficial for the first electrode assembly 250 and the second electrode assembly 251 to meet the requirements of battery processing.

[0188] According to some embodiments of the present application, optionally, as shown in Figures 5 and 7, the material conveying assembly 610 also includes a main conveying line 613 and a diversion mechanism 614, the main conveying line 613 is used to convey multiple first electrode assemblies 250 and multiple second electrode assemblies 251, and the diversion mechanism 614 is used to divert the first electrode assembly 250 from the main conveying line 613 to the first branch conveying line 611, and to divert the second electrode assembly 251 from the main conveying line 613 to the second branch conveying line 612.

[0189] By setting up a main conveying line 613 to convey multiple first electrode assemblies 250 and multiple second electrode assemblies 251 and then divert them, it is convenient to load the first electrode assemblies 250 and the second electrode assemblies 251, thereby improving the loading efficiency.

[0190] According to some embodiments of the present application, optionally, as shown in Figures 5 and 7, the first branch conveyor line 611 and the second branch conveyor line 612 are respectively connected to the main conveyor line 613 to form a first connection point 615 and a second connection point 616, the first connection point 615 is located upstream of the second connection point 616, the diversion mechanism 614 includes a diversion detection member 617, a guide member 618 and a guide driving member 619, wherein the diversion detection member 617 is arranged on the main conveyor line 613 and is located upstream of the first connection point 615, the diversion detection member 617 is used to detect whether the object flowing to the first connection point 615 is the first electrode assembly 250 or the second electrode assembly 251, the guide member 618 is arranged at the first connection point 615, and the guide driving member 619 transmits the guide member 618 to the first position in response to the object arriving at the first connection point 615 being the first electrode assembly 250, so that the first electrode assembly 250 flows to the first branch conveyor line 611 under the action of the guide member 618. In response to the object arriving at the first connection point 615 being the second electrode assembly 251 , the flow guide driver 619 drives the flow guide 618 to the second position, so that the second electrode assembly 251 continues to flow along the main conveying line 613 to the second connection point 616 .

[0191] The shunt detection member 617 can improve the accuracy of shunting the first electrode assembly 250 and the second electrode assembly 251. The shunting driver 619 can drive the shunting member 618 to switch between the first position and the second position to improve the shunting stability and flexibility.

[0192] Optionally, the diversion detection component 617 includes a barcode scanning gun.

[0193] Optionally, the flow guide 618 can function as a diversion member by blocking the second electrode assembly 251. Specifically, when the flow guide 618 is in the first position, it can block the path from the first connection point 615 to the second connection point 616, thereby limiting the flow of the electrode assembly from the first connection point 615 to the second connection point 616. Furthermore, when the flow guide 618 is in the first position, it can guide the electrode assembly from the first connection point 615 to the first branch conveyor line 611, thereby facilitating the flow of the electrode assembly from the first connection point 615 to the first branch conveyor line 611. When the flow guide 618 is in the second position, it can open the path from the first connection point 615 to the second connection point 616, thereby allowing the electrode assembly to flow from the first connection point 615 to the second connection point 616. Furthermore, when the flow guide 618 is in the second position, it does not guide the electrode assembly from the first connection point 615 to the first branch conveyor line 611, thereby limiting the flow of the electrode assembly from the first connection point 615 to the first branch conveyor line 611.

[0194] Optionally, part of the outer contour of the guide member 618 is set to be arc-shaped and tangent to the main conveying line 613 and the first branch conveying line 611 when the guide member 618 is in the first position, so as to guide the electrode assembly to flow from the first connection point 615 to the first branch conveying line 611.

[0195] Optionally, the flow guide driving member 619 includes a cylinder, and the flow guide driving member 619 pneumatically drives the flow guide member 618 to switch between the first position and the second position.

[0196] According to some embodiments of the present application, optionally, as shown in Figures 5 and 7, the material conveying assembly 610 includes a first branch return line 620 and a second branch return line 621, the first branch conveying line 611 is used to convey the first pallet 661 and the first electrode assembly 250 carried on the first pallet 661, the second branch conveying line 612 is used to convey the second pallet 662 and the second electrode assembly 251 carried on the second pallet 662, the first branch return line 620 is used to reflow the first pallet 661, and the second branch return line 621 is used to reflow the second pallet 662.

[0197] A first tray 661 and a second tray 662 are provided to carry the first electrode assembly 250 and the second electrode assembly 251 , respectively, to facilitate transportation of the first electrode assembly 250 and the second electrode assembly 251 .

[0198] By setting the first branch return line 620 and the second branch return line 621, the first branch return line 620 can form a loop with the first branch conveyor line 611, and the first branch return line 620 can form a loop with the second branch conveyor line 612, which is conducive to the automatic circulation of the first tray 661 and the second tray 662.

[0199] According to some embodiments of the present application, optionally, as shown in Figures 5 and 7, the first branch conveyor line 611 and the second branch conveyor line 612 are arranged side by side along the horizontal direction D7, the first branch return line 620 is located below the first branch conveyor line 611 along the vertical direction D8, and the second branch return line 621 is located below the second branch conveyor line 612 along the vertical direction D8.

[0200] Such a configuration is helpful in reducing the floor space occupied by the material conveying assembly 610 .

[0201] According to some embodiments of the present application, optionally, as shown in Figures 5, 8 and 9, the battery processing equipment 600 includes a transfer mechanism 660, which is used to transfer the first pallet 661 on the first branch conveyor line 611 to the first branch return line 620, and / or transfer the second pallet 662 on the second branch conveyor line 612 to the second branch return line 621.

[0202] By setting up the transfer mechanism 660, the first branch return line 620 can form a loop with the first branch conveyor line 611, and the first branch return line 620 can form a loop with the second branch conveyor line 612, which is conducive to the automatic circulation of the first tray 661 and the second tray 662.

[0203] According to some embodiments of the present application, optionally, as shown in Figures 8 and 9, the transfer mechanism 660 includes a transfer platform 663, a transfer conveyor belt 664, a belt driver 665 and a platform driver 666, the transfer conveyor belt 664 is arranged on the transfer platform 663, the belt driver 665 drives the transfer conveyor belt 664 to move to move the first pallet 661 and / or the second pallet 662 into or out of the transfer platform 663, and the platform driver 666 drives the transfer platform 663 along the vertical direction D8 so that the transfer platform 663 selectively docks with the first branch conveyor line 611 or the first branch return line 620, and / or the transfer platform 663 selectively docks with the second branch conveyor line 612 or the second branch return line 621.

[0204] The direction of movement of the first pallet 661 and / or the second pallet 662 in or out of the transfer platform 663 can be perpendicular to the direction of movement of the transfer platform 663 selectively docking with the first branch conveyor line 611 or the first branch return line 620. The provision of a belt drive 665 to drive the transfer conveyor belt 664 facilitates smooth movement of the first pallet 661 and / or the second pallet 662 in or out of the transfer platform 663, thereby improving the efficiency of moving the first pallet 661 and / or the second pallet 662 in or out of the transfer platform 663.

[0205] By setting a platform driving member 666 to drive the transfer platform 663 along the vertical direction D8, the transfer platform 663 can transport the first tray 661 and the second tray 662 in the vertical direction D8 by performing a lifting movement, which is conducive to the automatic circulation of the first tray 661 and the second tray 662.

[0206] Optionally, the platform driving member 666 is a motor.

[0207] Optionally, the belt drive 665 is a motor, and the belt drive 665 can drive the transfer conveyor belt 664 to rotate through belt transmission and shaft transmission.

[0208] According to some embodiments of the present application, optionally, as shown in Figures 5 and 7, the material conveying assembly 610 also includes a total return line 622 and a confluence mechanism 623, and the confluence mechanism 623 is used to converge the first tray 661 on the first branch return line 620 and the second tray 662 on the second branch return line 621 to the total return line 622.

[0209] After the first tray 661 and the second tray 662 are merged into the main return line 622 , they can be transported to the loading position by the main return line 622 and then loaded with electrode assemblies, thereby realizing the recycling of the first tray 661 and the second tray 662 .

[0210] Optionally, the structure of the converging mechanism 623 may be the same as or different from that of the diverting mechanism 614 .

[0211] According to some embodiments of the present application, optionally, as shown in Figures 5 and 6, the battery processing equipment 600 also includes a detection component 670, which is used to detect the first electrode assembly 250 and the second electrode assembly 251, and the pairing component 630 is configured to pair the first electrode assembly 250 and the second electrode assembly 251 based on the detection status of the first electrode assembly 250 and the second electrode assembly 251.

[0212] Specifically, the inspection component 670 can be used to inspect whether there are surface defects on the first electrode assembly 250 and the second electrode assembly 251, whether the position of the electrode ear portion 201 is misaligned, and whether the multiple electrode ears forming the electrode ear portion 201 are aligned, thereby determining whether the first electrode assembly 250 and the second electrode assembly 251 are qualified. The pairing component 630 can pair the qualified first electrode assembly 250 and the second electrode assembly 251. The first electrode assembly 250 and the second electrode assembly 251 with surface defects, misalignment of the electrode ear portion 201, or misalignment of the multiple electrode ears forming the electrode ear portion 201 are determined to be unqualified and are not paired.

[0213] Such an arrangement is beneficial to improving the qualified rate of finished battery cells.

[0214] According to some embodiments of the present application, optionally, as shown in Figure 5, the detection component 670 includes a first detection conveyor line 671, a second detection conveyor line 672, a first detection mechanism 673, a second detection mechanism 674, and a detection loading mechanism 675. The detection loading mechanism 675 picks up the first electrode assembly 250 and the second electrode assembly 251 from the material conveying component 610, and places them on the first detection conveyor line 671 and the second detection conveyor line 672, respectively. The first detection conveyor line 671 conveys the first electrode assembly 250 through the first detection mechanism 673, and the second detection conveyor line 672 conveys the second electrode assembly 251 through the second detection mechanism 674.

[0215] Such an arrangement can realize automatic detection of the first electrode assembly 250 and the second electrode assembly 251 , which is beneficial to improving the qualified rate of finished battery cells.

[0216] Optionally, the first detection mechanism 673 and the second detection mechanism 674 respectively include a CCD (Charge-Coupled Device) image sensor.

[0217] According to some embodiments of the present application, optionally, as shown in Figure 5, the material conveying assembly 610 includes a first branch conveying line 611 and a second branch conveying line 612, the first branch conveying line 611 is used to convey multiple first electrode assemblies 250, and the second branch conveying line 612 is used to convey multiple second electrode assemblies 251, the detection and loading mechanism 675 includes a first detection and loading mechanism 676 and a second detection and loading mechanism 677, the first detection and loading mechanism 676 is used to pick up the first electrode assembly 250 from the first branch conveying line 611 and place it on the first detection conveying line 671, the second detection and loading mechanism 677 is used to pick up the second electrode assembly 251 from the second branch conveying line 612 and place it on the second detection conveying line 672, and the picking and placing actions of the first detection and loading mechanism 676 and the second detection and loading mechanism 677 are relatively independent.

[0218] The first detection and loading mechanism 676 and the second detection and loading mechanism 677 can be the same or different. By providing the first detection and loading mechanism 676 and the second detection and loading mechanism 677, it is convenient to detect the first electrode assembly 250 and the second electrode assembly 251 separately, improve the accuracy of the movement path of the first electrode assembly 250 and the second electrode assembly 251, and improve the detection efficiency.

[0219] Optionally, the battery processing equipment 600 includes a control system, which is coupled to the material conveying assembly 610, the mating assembly 630, and the welding assembly 690. The control system can be used to coordinate and control the material conveying assembly 610, the mating assembly 630, and the welding assembly 690 to work together.

[0220] Optionally, the first detection and loading mechanism 676 and the second detection and loading mechanism 677 respectively include a movable manipulator and a track supporting the movement of the manipulator.

[0221] According to some embodiments of the present application, optionally, as shown in Figures 5 and 10 to 13, the pairing assembly 630 includes a pairing loading mechanism 631, a sorting mechanism 632, a stacking mechanism 633, and a first pairing conveyor line 634 and a second pairing conveyor line 635 arranged side by side. The pairing loading mechanism 631 is configured to pick up the first electrode assembly 250 and the second electrode assembly 251 in pairs, and place them on the first pairing conveyor line 634 and the second pairing conveyor line 635, respectively. The sorting mechanism 632 is configured to pair the first electrode assembly 250 and the second electrode assembly 251 in a qualified state. The stacking mechanism 633 is configured to stack the electrode body 220 of the paired first electrode assembly 250 and the electrode body 220 of the second electrode assembly 251.

[0222] By configuring the pairing loading mechanism 631 to pick up the first electrode assembly 250 and the second electrode assembly 251 in pairs, it is convenient to pair the first electrode assembly 250 and the second electrode assembly 251 one by one in subsequent processes. By configuring the sorting mechanism 632 to pair the first electrode assembly 250 and the second electrode assembly 251 that are in a qualified state, it is convenient to smoothly execute the subsequent processes. By configuring the stacking mechanism 633 to stack the electrode body 220 of the paired first electrode assembly 250 and the electrode body 220 of the second electrode assembly 251, it is convenient to weld the electrode ear portions 201 of the first electrode assembly 250 and the second electrode assembly 251 in subsequent processes.

[0223] In other embodiments, the pairing assembly 630 includes a sorting mechanism 632, a stacking mechanism 633, and a first pairing conveyor line 634 and a second pairing conveyor line 635 arranged side by side. The first pairing conveyor line 634 is connected to the first detection conveyor line 671, and the second pairing conveyor line 635 is connected to the second detection conveyor line 672, so that the first electrode assembly 250 and the second electrode assembly 251 can be loaded onto the first pairing conveyor line 634 and the second pairing conveyor line 635 respectively without the need to set up the pairing loading mechanism 631.

[0224] According to some embodiments of the present application, optionally, as shown in Figures 5 and 10, pairing includes directly using the first electrode assembly 250 and the second electrode assembly 251 picked up in pairs as the paired first electrode assembly 250 and the second electrode assembly 251 when both are in a qualified state.

[0225] Such an arrangement is conducive to improving production efficiency.

[0226] According to some embodiments of the present application, optionally, as shown in Figures 5 and 10, the battery processing equipment 600 is provided with a non-conforming product recovery area 680, and the pairing includes sorting the non-conforming first electrode assembly 250 and the second electrode assembly 251 to the non-conforming product recovery area 680 when at least one of the first electrode assembly 250 and the second electrode assembly 251 picked up in a pair is in a non-conforming state.

[0227] Such a configuration is beneficial to reducing the interference of the unqualified first electrode assembly 250 and / or second electrode assembly 251 on the pairing, thereby improving production efficiency.

[0228] According to some embodiments of the present application, optionally, as shown in FIG5 and FIG10 , the battery processing equipment 600 is provided with a first qualified product temporary storage area 681 corresponding to the first electrode assembly 250 and a second qualified product temporary storage area 682 corresponding to the second electrode assembly 251. Pairing includes sorting the first electrode assembly 250 to the first qualified product temporary storage area 681 and sorting the unqualified second electrode assembly 251 to the unqualified product recovery area 680 when the first electrode assembly 250 and the second electrode assembly 251 picked up in a paired manner are in a qualified state and the second electrode assembly 251 is in a non-qualified state, and the second electrode assembly 251 does not exist in the second qualified product temporary storage area 682.

[0229] When the first electrode assembly 250 is qualified and the second electrode assembly 251 is unqualified, since there is no qualified second electrode assembly 251 to pair with the first electrode assembly 250, the first electrode assembly 250 is sorted to the first qualified product temporary storage area 681 and the second electrode assembly 251 is sorted to the unqualified product recovery area 680. This can reduce the interference of the unqualified second electrode assembly 251 on the pairing process and improve production efficiency. When a new qualified second electrode assembly 251 needs to be paired, it can be paired with the first electrode assembly 250 placed in the first qualified product temporary storage area 681 and then proceed to the next process.

[0230] Alternatively, when the first electrode assembly 250 and the second electrode assembly 251 picked up in pairs are in an unqualified state, the second electrode assembly 251 is in a qualified state, and the first electrode assembly 250 does not exist in the first qualified product temporary storage area 681, the unqualified first electrode assembly 250 is sorted to the unqualified product recovery area 680, and the second electrode assembly 251 is sorted to the second qualified product temporary storage area 682.

[0231] When the first electrode assembly 250 is in an unqualified state and the second electrode assembly 251 is in a qualified state, since there is no qualified first electrode assembly 250 to pair with the second electrode assembly 251, the second electrode assembly 251 is sorted to the second qualified product temporary storage area 682 and the first electrode assembly 250 is sorted to the unqualified product recovery area 680. This can reduce the interference of the unqualified first electrode assembly 250 on the pairing and improve production efficiency. When a new qualified first electrode assembly 250 appears and needs to be paired, it can be paired with the first electrode assembly 250 placed in the second qualified product temporary storage area 682 and then enter the next process.

[0232] Optionally, as shown in Figures 5 and 10, the non-conforming product recovery area 680 is provided with a recovery conveyor belt 685, which can transport the non-conforming first electrode assembly 250 and the second electrode assembly 251 to the edge of the battery processing equipment 600 to facilitate the unloading or reworking of the non-conforming first electrode assembly 250 and the second electrode assembly 251.

[0233] According to some embodiments of the present application, optionally, as shown in FIG. 5 and FIG. 10 , the battery processing equipment 600 is provided with a first qualified product temporary storage area 681 corresponding to the first electrode assembly 250 and a second qualified product temporary storage area 682 corresponding to the second electrode assembly 251 .

[0234] The pairing includes when the first electrode assembly 250 and the second electrode assembly 251 picked up in a pair are in a qualified state, the second electrode assembly 251 is in an unqualified state, and the second electrode assembly 251 exists in the second qualified product temporary storage area 682, then the unqualified second electrode assembly 251 is sorted to the unqualified product recovery area 680, and the second electrode assembly 251 in the second qualified product temporary storage area 682 is moved back to the second pairing conveyor line 635.

[0235] Alternatively, when the first electrode assembly 250 and the second electrode assembly 251 picked up in pairs are in an unqualified state, the second electrode assembly 251 is in a qualified state, and the first electrode assembly 250 exists in the first qualified product temporary storage area 681, the unqualified first electrode assembly 250 is sorted to the unqualified product recovery area 680, and the first electrode assembly 250 in the first qualified product temporary storage area 681 is moved back to the first pairing conveyor line 634.

[0236] With such an arrangement, on the second pairing conveyor line 635, the second electrode assembly 251 in a qualified state can be replaced by the second electrode assembly 251 in an unqualified state, and on the first pairing conveyor line 634, the first electrode assembly 250 in a qualified state can be replaced by the first electrode assembly 250 in an unqualified state, which is beneficial to improving the qualified rate of finished products.

[0237] According to some embodiments of the present application, optionally, as shown in Figures 5 and 10, the first pairing conveyor line 634 and the second pairing conveyor line 635 extend along the first horizontal direction D7a and are arranged side by side along the second horizontal direction D7b perpendicular to the first horizontal direction D7a, the sorting mechanism 632 includes a first sorting and picking mechanism 6321, a second sorting and picking mechanism 6322 and a sorting drive mechanism 6323, the sorting drive mechanism 6323 drives the first sorting and picking mechanism 6321 and the second sorting and picking mechanism 6322 along the second horizontal direction D7b, the first sorting and picking mechanism 6321 and the second sorting and picking mechanism 6322 are configured to pick up the first electrode assembly 250 and the second electrode assembly 251 from the first pairing conveyor line 634 and the second pairing conveyor line 635, respectively.

[0238] Such an arrangement enables the first sorting and picking mechanism 6321 and the second sorting and picking mechanism 6322 to respectively take the unqualified first electrode assembly 250 and the second electrode assembly 251 away from the first pairing conveyor line 634 and the second pairing conveyor line 635, which is beneficial to improving the qualified rate of finished products.

[0239] According to some embodiments of the present application, optionally, as shown in Figures 5 and 10, the non-qualified product recovery area 680 includes a first recovery area 683 located on the side of the first pairing conveyor line 634 away from the second pairing conveyor line 635 and a second recovery area 684 located between the first pairing conveyor line 634 and the second pairing conveyor line 635. The sorting drive mechanism 6323 is configured to drive the second sorting and picking mechanism 6322 to place the second electrode assembly 251 in an unqualified state in the second recovery area 684, and to drive the first sorting and picking mechanism 6321 to place the first electrode assembly 250 in an unqualified state in the first recovery area 683. The sorting drive mechanism 6323 is also configured to drive the first sorting and picking mechanism 6321 to pick up the second electrode assembly 251 from the second recovery area 684 and place it in the first recovery area 683.

[0240] Since the first recycling area 683 is located on the side of the first pairing conveyor line 634 away from the second pairing conveyor line 635, when it is necessary to place the unqualified second electrode assembly 251 from the second pairing conveyor line 635 to the first recycling area 683, the sorting drive mechanism 6323 is set to drive the second sorting and picking mechanism 6322 to temporarily place the unqualified second electrode assembly 251 in the second recycling area 684, and drive the first sorting and picking mechanism 6321 to pick up the second electrode assembly 251 from the second recycling area 684 and place it in the first recycling area 683. This can prevent the first sorting and picking mechanism 6321 and the second sorting and picking mechanism 6322 from interfering with each other, thereby improving the stability of the process of placing the unqualified first electrode assembly 250 and / or second electrode assembly 251 in the first recycling area 683.

[0241] Optionally, the first recycling area 683 is provided with a recycling conveyor belt 685, while the second recycling area 684 is not provided with a recycling conveyor belt 685. In this way, the number of recycling conveyor belts 685 can be reduced, simplifying the structure of the battery processing equipment 600.

[0242] According to some embodiments of the present application, optionally, as shown in FIG. 5 and FIG. 10 , the first recycling area 683 includes a recycling conveyor belt 685 for conveying the first electrode assembly 250 and / or the second electrode assembly 251 in an unqualified state.

[0243] Such a configuration can reduce the interference of the unqualified first electrode assembly 250 and / or second electrode assembly 251 in the pairing process.

[0244] According to some embodiments of the present application, optionally, as shown in FIG6, FIG10 and FIG12, the first sorting and picking mechanism 6321 and / or the second sorting and picking mechanism 6322 respectively include a first sorting drive 6324, a sorting support 6325, a second sorting drive 6326 and two groups of sorting clamps 6327, each group of sorting clamps 6327 includes a sorting claw 6328 and a third sorting drive 6329, and the first sorting drive 6324 is configured to drive the sorting support 6325 to move closer to or away from the first pairing conveyor line 634. Or the second pairing conveyor line 635, the second sorting drive 6326 and the two groups of sorting clamps 6327 are arranged on the sorting bracket 6325, the second sorting drive 6326 is configured to change the spacing between the two groups of sorting clamps 6327 along the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251, and the third sorting drive 6329 is configured to drive the sorting claw 6328 to clamp the first electrode assembly 250 or the second electrode assembly 251 along the thickness direction of the first electrode assembly 250 or the second electrode assembly 251.

[0245] When it is necessary to pick up the first electrode assembly 250 from the first pairing conveyor line 634, or when it is necessary to pick up the second electrode assembly 251 from the second pairing conveyor line 635, the first sorting drive 6324 can drive the sorting bracket 6325 to approach the first pairing conveyor line 634 or the second pairing conveyor line 635, the second sorting drive 6326 can reduce the distance between the two groups of sorting clamps 6327 along the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251, and the third sorting drive 6329 can drive the sorting clamp 6328 to clamp the first electrode assembly 250 or the second electrode assembly 251 along the thickness direction of the first electrode assembly 250 or the second electrode assembly 251, so as to be able to stably clamp the first electrode assembly 250 or the second electrode assembly 251.

[0246] When the first electrode assembly 250 needs to be placed on the first pairing conveyor line 634, or when the second electrode assembly 251 needs to be placed on the second pairing conveyor line 635, the first sorting drive 6324 can drive the sorting bracket 6325 to approach the first pairing conveyor line 634 or the second pairing conveyor line 635, and the third sorting drive 6329 can drive the sorting clamp 6328 to loosen the first electrode assembly 250 or the second electrode assembly 251 along the thickness direction of the first electrode assembly 250 or the second electrode assembly 251, and the second sorting drive 6326 can increase the distance between the two groups of sorting clamps 6327 along the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251 to avoid the first electrode assembly 250 or the second electrode assembly 251, so as to place the first electrode assembly 250 on the first pairing conveyor line 634, or the second electrode assembly 251 needs to be placed on the second pairing conveyor line 635.

[0247] Optionally, the first sorting drive 6324 includes a motor. Specifically, the first sorting drive 6324 includes a screw and a slider. The motor drives the screw to rotate, and the slider is sleeved on the screw and threadedly engaged with the screw. The slider is fixed relative to the sorting bracket 6325. When the motor drives the screw to rotate, it drives the slider along the screw's rotation axis, thereby driving the sorting bracket 6325 toward or away from the first pairing conveyor line 634 or the second pairing conveyor line 635.

[0248] Optionally, the second sorting drive 6326 includes a cylinder, and the second sorting drive 6326 can change the distance between the two groups of sorting clamps 6327 pneumatically.

[0249] Optionally, the third sorting drive 6329 includes a cylinder, and the third sorting drive 6329 can pneumatically control the sorting claws 6328 to clamp or release the first electrode assembly 250 or the second electrode assembly 251.

[0250] Optionally, when the first electrode assembly 250 is conveyed on the first pairing conveyor line 634, the thickness direction of the first electrode assembly 250 is perpendicular to the first horizontal direction D7a and the second horizontal direction D7b. Furthermore, the length direction or width direction of the first electrode assembly 250 is parallel to the first horizontal direction D7a or the second horizontal direction D7b. When the second electrode assembly 251 is conveyed on the second pairing conveyor line 635, the thickness direction of the second electrode assembly 251 is perpendicular to the first horizontal direction D7a and the second horizontal direction D7b. Furthermore, the length direction or width direction of the second electrode assembly 251 is parallel to the first horizontal direction D7a or the second horizontal direction D7b.

[0251] Alternatively, as shown in FIG6 , the electrode assembly obtained by welding the first electrode assembly 250 and the second electrode assembly 251 includes an electrode body 210 having a first direction D1, a second direction D2, and a third direction D3 that are orthogonal to each other, and includes two main surfaces disposed opposite to each other along the first direction D1, two end surfaces disposed opposite to each other along the second direction D2, and two side surfaces disposed opposite to each other along the third direction D3. The thickness direction of the first electrode assembly 250 or the second electrode assembly 251 is parallel to the first direction D1. The length direction of the first electrode assembly 250 or the second electrode assembly 251 is parallel to the second direction D2. The width direction of the first electrode assembly 250 or the second electrode assembly 251 is parallel to the third direction D3.

[0252] According to some embodiments of the present application, optionally, as shown in Figures 5 and 6, the pole ear portion 201 of the first electrode assembly 250 is close to the side surface of the electrode body portion 220 of the first electrode assembly 250 facing the first pairing conveyor line 634, and the pole ear portion 201 of the second electrode assembly 251 is close to the side surface of the electrode body portion 220 of the second electrode assembly 251 facing the second pairing conveyor line 635, and the pairing assembly 630 also includes a flipping mechanism 636, which is configured to flip the first of the first electrode assembly 250 and the second electrode assembly 251, and the stacking mechanism 633 is configured to stack the electrode body portion 220 of the second of the first electrode assembly 250 and the second electrode assembly 251 on the electrode body portion 220 of the first of the first electrode assembly 250 and the second electrode assembly 251.

[0253] Alternatively, the pole ear portion 201 of the first electrode assembly 250 is close to the side surface of the electrode body portion 220 of the first electrode assembly 250 away from the first pairing conveyor line 634, and the pole ear portion 201 of the second electrode assembly 251 is close to the side surface of the electrode body portion 220 of the second electrode assembly 251 away from the second pairing conveyor line 635. The pairing assembly 630 also includes a flipping mechanism 636, which is configured to flip the first of the first electrode assembly 250 and the second electrode assembly 251, and the stacking mechanism 633 is configured to stack the electrode body portion 220 of the first of the flipped first electrode assembly 250 and the second electrode assembly 251 on the electrode body portion 220 of the second of the first electrode assembly 250 and the second electrode assembly 251.

[0254] In this manner, after the first electrode assembly 250 and the second electrode assembly 251 are stacked, the pole ear portion 201 of the first electrode assembly 250 can be brought closer to the pole ear portion 201 of the second electrode assembly 251, reducing the distance between the pole ear portion 201 of the first electrode assembly 250 and the pole ear portion 201 of the second electrode assembly 251, thereby facilitating welding between the pole ear portion 201 of the first electrode assembly 250 and the pole ear portion 201 of the second electrode assembly 251.

[0255] According to some embodiments of the present application, optionally, as shown in Figures 5, 6 and 14, the flip mechanism 636 includes a first flip drive 6361, a flip bracket 6362, a second flip drive 6363, a third flip drive 6364 and a flip fixture 6365, each flip fixture 6365 includes two flip claws 6366 and a fourth flip drive 6367, the first flip drive 6361 is configured to drive the flip bracket 6362 to move closer to or away from the first pairing conveyor line 634 or the second pairing conveyor line 635, the second flip drive 6363, the third flip drive 6364 and the flip fixture 6365, each flip fixture 6365 includes two flip claws 6366 and a fourth flip drive 6367, the first flip drive 6361 is configured to drive the flip bracket 6362 to move closer to or away from the first pairing conveyor line 634 or the second pairing conveyor line 635, 364 and the flip clamp 6365 are arranged on the flip bracket 6362, the second flip driving member 6363 is arranged to change the distance between the two flip jaws 6366 in the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251, the fourth flip driving member 6367 is arranged to drive the flip clamp 6366 to clamp the first electrode assembly 250 or the second electrode assembly 251 in the thickness direction of the first electrode assembly 250 or the second electrode assembly 251, and the third flip driving member 6364 is arranged to drive the flip clamp 6365 to perform synchronous flipping relative to the flip bracket 6362.

[0256] Specifically, the flipping mechanism 636 can flip the first electrode assembly 250 or the second electrode assembly 251 on the first pairing conveyor line 634 or the second pairing conveyor line 635. When it is necessary to flip one of the first electrode assembly 250 and the second electrode assembly 251, the first flip driving member 6361 can drive the flip bracket 6362 to approach the first pairing conveyor line 634 or the second pairing conveyor line 635. The second flip driving member 6363 is configured to reduce the distance between the two flip clamps 6366 in the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251. The fourth flip driving member 6367 can drive the flip clamp 6366 to clamp the first electrode assembly 250 or the second electrode assembly 251 in the thickness direction to maintain the stability of the flipping process. Then, the third flip driving member 6364 can drive the flip clamp 6365 to flip synchronously with respect to the flip bracket 6362.

[0257] Optionally, the first sorting drive 6324 includes a motor. Specifically, the first sorting drive 6324 includes a screw and a slider. The motor drives the screw to rotate, and the slider is sleeved on the screw and threadedly engaged with the screw. The slider is fixed relative to the flip bracket 6362. When the motor drives the screw to rotate, it drives the slider along the screw's rotation axis, thereby driving the flip bracket 6362 toward or away from the first pairing conveyor line 634 or the second pairing conveyor line 635.

[0258] Optionally, the second flip driving member 6363 includes a cylinder, and the second flip driving member 6363 can change the distance between the two flip clamps 6366 in a pneumatic manner.

[0259] Optionally, the fourth flip driving member 6367 includes a cylinder, and the fourth flip driving member 6367 can pneumatically control the flip clamping claw 6366 to clamp or release the first electrode assembly 250 or the second electrode assembly 251.

[0260] According to some embodiments of the present application, optionally, as shown in Figure 14, the flip bracket 6362 includes two cantilevers 6368 arranged side by side and at intervals, and a connecting arm 6369 connected between the two cantilevers 6368, and the flip fixture 6365 is rotatably supported on the free ends of the two cantilevers 6368 respectively. The third flip driving member 6364 includes a rotating motor 6370, a transmission shaft 6371, and two synchronous belts 6372. The transmission shaft 6371 is rotatably supported on the connecting arm 6369 along the spacing direction D9 of the two cantilevers 6368. The rotating motor 6370 drives the transmission shaft 6371 to rotate, and the two ends of the transmission shaft 6371 are respectively connected to the corresponding flip fixture 6365 through the synchronous belt 6372.

[0261] When flipping the first electrode assembly 250 or the second electrode assembly 251, the drive shaft 6371 drives the synchronous belt 6372 to rotate, which in turn drives the flip fixture 6365 to flip synchronously relative to the flip bracket 6362. Furthermore, the third flip drive member 6364 also includes a speed reduction mechanism and a synchronous pulley. The motor drives the speed reduction mechanism, which in turn drives the drive shaft 6371 to rotate. The two ends of the drive shaft 6371 are connected to synchronous pulleys and synchronous belts 6372, respectively. The drive shaft 6371 drives the synchronous pulleys to rotate, which in turn drives the synchronous belts 6372 to rotate.

[0262] With such an arrangement, the first electrode assembly 250 or the second electrode assembly 251 can be stably flipped.

[0263] According to some embodiments of the present application, optionally, as shown in Figures 5, 11 and 13, the stacking mechanism 633 includes a first stacking drive 6331, a second stacking drive 6332, a stacking bracket 6333, a third stacking drive 6334 and a stacking clamp 6335, each set of stacking clamps 6335 includes two stacking clamps 6336 and a fourth stacking drive 6337, the first stacking drive 6331 drives the stacking bracket 6333 in the spacing direction D10 between the first paired conveyor line 634 and the second paired conveyor line 635, and the second stacking drive 6332 is configured to drive the stacking bracket 6333. The stacking bracket 6333 is close to or away from the first pairing conveyor line 634 or the second pairing conveyor line 635, and the third stacking drive 6334 and the stacking clamp 6335 are arranged on the stacking bracket 6333. The third stacking drive 6334 is arranged to change the distance between the two stacking clamps 6336 in the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251, and the fourth stacking drive 6337 is arranged to drive the stacking clamp 6336 to clamp the first electrode assembly 250 or the second electrode assembly 251 in the thickness direction of the first electrode assembly 250 or the second electrode assembly 251.

[0264] The stacking mechanism 633 can pick up the first electrode assembly 250 from the first pairing conveyor line 634 and place it on the second electrode assembly 251 on the second pairing conveyor line 635, or pick up the second electrode assembly 251 from the second pairing conveyor line 635 and place it on the first electrode assembly 250 on the first pairing conveyor line 634, thereby stacking the first electrode assembly 250 and the second electrode assembly 251. By configuring the stacking mechanism 633 to stack the electrode body 220 of the first electrode assembly 250 and the electrode body 220 of the second electrode assembly 251, welding the electrode ear portions 201 of the first electrode assembly 250 and the second electrode assembly 251 in subsequent processes is facilitated.

[0265] When the first electrode assembly 250 needs to be picked up from the first pairing conveyor line 634, or when the second electrode assembly 251 needs to be picked up from the second pairing conveyor line 635, the first stacking drive 6331 drives the stacking bracket 6333 in the spacing direction D10 between the first pairing conveyor line 634 and the second pairing conveyor line 635, so that the second stacking drive 6332 is above the first pairing conveyor line 634 or above the second pairing conveyor line 635, and the second stacking drive 6332 can drive the stacking bracket 6333 to approach the first pairing conveyor line 634 or the second pairing conveyor line 635. The third stacking drive member 6334 can reduce the distance between the two stacking jaws 6336 in the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251 to match the length direction or width direction size of the first electrode assembly 250 or the second electrode assembly 251, and the fourth stacking drive member 6337 can drive the stacking clamp 6335 to clamp the first electrode assembly 250 or the second electrode assembly 251 in the thickness direction of the first electrode assembly 250 or the second electrode assembly 251, so as to be able to stably clamp the first electrode assembly 250 or the second electrode assembly 251.

[0266] When the first electrode assembly 250 needs to be placed on the first pairing conveyor line 634, or when the second electrode assembly 251 needs to be placed on the second pairing conveyor line 635, the first stacking drive 6331 drives the stacking bracket 6333 in the spacing direction D10 between the first pairing conveyor line 634 and the second pairing conveyor line 635, so that the second stacking drive 6332 is above the first pairing conveyor line 634 or above the second pairing conveyor line 635, and the second stacking drive 6332 can drive the stacking bracket 6333 to move closer to the first pairing conveyor line 634 or the second pairing conveyor line 635. Near the first pairing conveyor line 634 or the second pairing conveyor line 635, the third stacking drive 6334 can increase the distance between the two stacking clamps 6336 in the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251 to avoid the first electrode assembly 250 or the second electrode assembly 251, and the fourth stacking drive 6337 can drive the stacking clamp 6335 to clamp the first electrode assembly 250 or the second electrode assembly 251 in the thickness direction of the first electrode assembly 250 or the second electrode assembly 251.

[0267] Such an arrangement can improve the stability of the stacking process.

[0268] Optionally, the first stacking drive 6331 includes a motor. Specifically, the first stacking drive 6331 also includes a screw and a slider. The motor drives the screw to rotate, and the slider is sleeved on the screw and screwed thereto via threads. The slider is fixed relative to the stacking bracket 6333. When the motor drives the screw to rotate, it drives the slider along the screw's rotation axis, thereby driving the stacking bracket 6333 in the spacing direction D10 between the first pairing conveyor line 634 and the second pairing conveyor line 635.

[0269] Optionally, the second stacking drive 6332 includes a motor. Specifically, the second stacking drive 6332 also includes a screw and a slider. The motor drives the screw to rotate, and the slider is sleeved on the screw and screwed thereto via threads. The slider is fixed relative to the stacking bracket 6333. When the motor drives the screw to rotate, it drives the slider along the screw's rotation axis, thereby driving the stacking bracket 6333 toward or away from the first pairing conveyor line 634 or the second pairing conveyor line 635.

[0270] Optionally, the third stacking driving member 6334 includes a cylinder, and the third stacking driving member 6334 can change the distance between the two stacking jaws 6336 in a pneumatic manner.

[0271] Optionally, the fourth stacking driving member 6337 includes a cylinder, and the fourth stacking driving member 6337 can pneumatically control the stacking clamping jaws 6336 to clamp or release the first electrode assembly 250 or the second electrode assembly 251 .

[0272] According to some embodiments of the present application, optionally, as shown in Figure 5, the welding assembly 690 includes a welding conveyor line 691, a welding positioning jig 692 and a welding mechanism 693, the welding positioning jig 692 is used to clamp and fix the paired first electrode assembly 250 and the second electrode assembly 251, the welding conveyor line 691 sends the welding positioning jig 692 into the welding mechanism 693, and the welding mechanism 693 welds the pole ear portion 201 of the first electrode assembly 250 and the pole ear portion 201 of the second electrode assembly 251 clamped by the welding positioning jig 692 to each other.

[0273] For example, the welding mechanism 693 may weld the electrode ear portion 201 of the first electrode assembly 250 and the electrode ear portion 201 of the second electrode assembly 251 to each other by ultrasonic welding.

[0274] By setting up a welding conveyor line 691 to send the welding positioning fixture 692 into the welding mechanism 693, the welding efficiency can be improved.

[0275] According to some embodiments of the present application, optionally, as shown in Figures 5 and 6, the pole ear portion 201 includes a first pole ear portion 261 and a second pole ear portion 262, the welding mechanism 693 includes a first welding mechanism 6931 and a second welding mechanism 6932, the welding conveyor line 691 conveys the welding positioning jig 692 through the first welding mechanism 6931 and the second welding mechanism 6932 in sequence, the first welding mechanism 6931 is used to weld the first pole ear portion 261 of the first electrode assembly 250 and the first pole ear portion 261 of the second electrode assembly 251 to each other, and the second welding mechanism 6932 is used to weld the second pole ear portion 262 of the first electrode assembly 250 and the second pole ear portion 262 of the second electrode assembly 251 to each other.

[0276] The first electrode lug 261 and the second electrode lug 262 may have different structures and properties. For example, one of the first electrode lug 261 and the second electrode lug 262 may be made of copper and the other of the first electrode lug 261 and the second electrode lug 262 may be made of aluminum, and the sizes and welding temperatures of the two lugs may be different.

[0277] By providing the first welding mechanism 6931 and the second welding mechanism 6932 , on the one hand, the welding efficiency can be improved, and on the other hand, different welding conditions can be provided for the first pole ear portion 261 and the second pole ear portion 262 to meet different welding requirements of the first pole ear portion 261 and the second pole ear portion 262 .

[0278] According to some embodiments of the present application, as shown in Figures 5 to 14, a battery processing device 600 optionally includes a material conveying assembly 610, a mating assembly 630, and a welding assembly 690. The material conveying assembly 610 is used to convey the first electrode assembly 250 and the second electrode assembly 251, wherein the first electrode assembly 250 and the second electrode assembly 251 respectively include an electrode body 220 and a pole ear portion 201 disposed on the electrode body 220. The mating assembly 630 is used to mate the first electrode assembly 250 and the second electrode assembly 251 so that the electrode body 220 of the first electrode assembly 250 and the electrode body 220 of the second electrode assembly 251 are stacked on each other. The welding assembly 690 is used to weld the pole ear portions 201 of the first electrode assembly 250 and the pole ear portions 201 of the second electrode assembly 251 to each other. The material conveying assembly 610 includes a first branch conveying line 611 and a second branch conveying line 612. The first branch conveying line 611 is used to convey multiple first electrode assemblies 250, and the second branch conveying line 612 is used to convey multiple second electrode assemblies 251. The material conveying assembly 610 also includes a main conveying line 613 and a diversion mechanism 614. The main conveying line 613 is used to convey multiple first electrode assemblies 250 and multiple second electrode assemblies 251. The diversion mechanism 614 is used to divert the first electrode assemblies 250 from the main conveying line 613 to the first branch conveying line 611, and to divert the second electrode assemblies 251 from the main conveying line 613 to the second branch conveying line 612. The first branch conveyor line 611 and the second branch conveyor line 612 are respectively connected to the main conveyor line 613 to form a first connection point 615 and a second connection point 616. The first connection point 615 is located upstream of the second connection point 616. The diversion mechanism 614 includes a diversion detection part 617, a guide part 618 and a guide driving part 619, wherein the diversion detection part 617 is arranged on the main conveyor line 613 and is located upstream of the first connection point 615. The diversion detection part 617 is used to detect whether the object flowing to the first connection point 615 is the first electrode assembly 250 or the second electrode assembly 251. The guide part 618 is arranged at the first connection point 615. The guide driving part 619 transmits the guide part 618 to the first position in response to the object arriving at the first connection point 615 being the first electrode assembly 250, so that the first electrode assembly 250 flows to the first branch conveyor line 611 under the action of the guide part 618. In response to the object arriving at the first connection point 615 being the second electrode assembly 251 , the flow guide driver 619 drives the flow guide 618 to the second position, so that the second electrode assembly 251 continues to flow along the main conveying line 613 to the second connection point 616 .The material conveying assembly 610 includes a first branch return line 620 and a second branch return line 621. The first branch conveyor line 611 is used to convey a first tray 661 and a first electrode assembly 250 carried on the first tray 661. The second branch conveyor line 612 is used to convey a second tray 662 and a second electrode assembly 251 carried on the second tray 662. The first branch return line 620 is used to return the first tray 661, and the second branch return line 621 is used to return the second tray 662. The first branch conveyor line 611 and the second branch conveyor line 612 are arranged side by side along the horizontal direction D7. The first branch return line 620 is located below the first branch conveyor line 611 along the vertical direction D8, and the second branch return line 621 is located below the second branch conveyor line 612 along the vertical direction D8. The battery processing equipment 600 includes a transfer mechanism 660, which is used to transfer the first pallet 661 on the first branch conveyor line 611 to the first branch return line 620, and / or transfer the second pallet 662 on the second branch conveyor line 612 to the second branch return line 621. The transfer mechanism 660 includes a transfer platform 663, a transfer conveyor belt 664, a belt drive 665, and a platform drive 666. The transfer conveyor belt 664 is provided on the transfer platform 663. The belt drive 665 drives the transfer conveyor belt 664 to move the first pallet 661 and / or the second pallet 662 into or out of the transfer platform 663. The platform drive 666 drives the transfer platform 663 along the vertical direction D8 so that the transfer platform 663 selectively docks with the first branch conveyor line 611 or the first branch return line 620, and / or selectively docks with the second branch conveyor line 612 or the second branch return line 621. The material conveying assembly 610 further includes a main return line 622 and a confluence mechanism 623. The confluence mechanism 623 is configured to converge the first tray 661 on the first branch return line 620 and the second tray 662 on the second branch return line 621 to the main return line 622. The battery processing equipment 600 further includes a detection assembly 670 for detecting the first electrode assembly 250 and the second electrode assembly 251. The pairing assembly 630 is configured to perform pairing based on the detected status of the first electrode assembly 250 and the second electrode assembly 251. The detection component 670 includes a first detection conveyor line 671, a second detection conveyor line 672, a first detection mechanism 673, a second detection mechanism 674, and a detection loading mechanism 675. The detection loading mechanism 675 picks up the first electrode assembly 250 and the second electrode assembly 251 from the material conveying component 610 and places them on the first detection conveyor line 671 and the second detection conveyor line 672 respectively. The first detection conveyor line 671 conveys the first electrode assembly 250 through the first detection mechanism 673, and the second detection conveyor line 672 conveys the second electrode assembly 251 through the second detection mechanism 674.The material conveying assembly 610 includes a first branch conveying line 611 and a second branch conveying line 612. The first branch conveying line 611 is used to convey multiple first electrode assemblies 250, and the second branch conveying line 612 is used to convey multiple second electrode assemblies 251. The detection and loading mechanism 675 includes a first detection and loading mechanism 676 and a second detection and loading mechanism 677. The first detection and loading mechanism 676 is used to pick up the first electrode assembly 250 from the first branch conveying line 611 and place it on the first detection conveying line 671. The second detection and loading mechanism 677 is used to pick up the second electrode assembly 251 from the second branch conveying line 612 and place it on the second detection conveying line 672. The picking and placing actions of the first detection and loading mechanism 676 and the second detection and loading mechanism 677 are relatively independent. The pairing assembly 630 includes a pairing loading mechanism 631, a sorting mechanism 632, a stacking mechanism 633, and a first pairing conveyor line 634 and a second pairing conveyor line 635 arranged side by side. The pairing loading mechanism 631 is configured to pick up the first electrode assembly 250 and the second electrode assembly 251 in pairs and place them on the first pairing conveyor line 634 and the second pairing conveyor line 635, respectively. The sorting mechanism 632 is configured to pair the first electrode assembly 250 and the second electrode assembly 251 in a qualified state. The stacking mechanism 633 is configured to stack the electrode body portion 220 of the paired first electrode assembly 250 and the electrode body portion 220 of the second electrode assembly 251. Pairing includes directly using the first electrode assembly 250 and the second electrode assembly 251 picked up in a pair as the paired first electrode assembly 250 and the second electrode assembly 251 when both are qualified. The battery processing equipment 600 is provided with a non-conforming product recovery area 680. Pairing includes sorting the non-conforming first electrode assembly 250 and / or second electrode assembly 251 to the non-conforming product recovery area 680 when at least one of the first electrode assembly 250 and the second electrode assembly 251 picked up as a pair is in a non-conforming state. The battery processing equipment 600 is provided with a first conforming product temporary storage area 681 corresponding to the first electrode assembly 250 and a second conforming product temporary storage area 682 corresponding to the second electrode assembly 251. Pairing includes sorting the first electrode assembly 250 to the first conforming product temporary storage area 681 and the second electrode assembly 251 to the non-conforming product recovery area 680 when the first electrode assembly 250 and the second electrode assembly 251 picked up as a pair are in a conforming state and the second electrode assembly 251 is in a non-conforming state, and the second electrode assembly 251 is not present in the second conforming product temporary storage area 682.Alternatively, when the first electrode assembly 250 and the second electrode assembly 251 picked up in pairs are in a non-conforming state and the second electrode assembly 251 is in a conforming state, and the first electrode assembly 250 does not exist in the first conforming product temporary storage area 681, the non-conforming first electrode assembly 250 is sorted to the non-conforming product recovery area 680, and the second electrode assembly 251 is sorted to the second conforming product temporary storage area 682. The battery processing equipment 600 is provided with a first conforming product temporary storage area 681 corresponding to the first electrode assembly 250 and a second conforming product temporary storage area 682 corresponding to the second electrode assembly 251. The pairing includes, when the first electrode assembly 250 of the first electrode assembly 250 and the second electrode assembly 251 picked up in a pair is in a qualified state and the second electrode assembly 251 is in a non-qualified state, and the second electrode assembly 251 exists in the second qualified product temporary storage area 682, sorting the non-qualified second electrode assembly 251 to the non-qualified product recovery area 680, and moving the second electrode assembly 251 in the second qualified product temporary storage area 682 back to the second pairing conveyor line 635. Alternatively, when the first electrode assembly 250 of the first electrode assembly 250 and the second electrode assembly 251 picked up in a pair is in a non-qualified state and the second electrode assembly 251 is in a qualified state, and the first electrode assembly 250 exists in the first qualified product temporary storage area 681, sorting the non-qualified first electrode assembly 250 to the non-qualified product recovery area 680, and moving the first electrode assembly 250 in the first qualified product temporary storage area 681 back to the first pairing conveyor line 634. The first pairing conveyor line 634 and the second pairing conveyor line 635 extend along the first horizontal direction D7a and are arranged side by side along the second horizontal direction D7b perpendicular to the first horizontal direction D7a. The sorting mechanism 632 includes a first sorting and picking mechanism 6321, a second sorting and picking mechanism 6322 and a sorting drive mechanism 6323. The sorting drive mechanism 6323 transmits the first sorting and picking mechanism 6321 and the second sorting and picking mechanism 6322 along the second horizontal direction D7b. The first sorting and picking mechanism 6321 and the second sorting and picking mechanism 6322 are configured to pick up the first electrode assembly 250 and the second electrode assembly 251 from the first pairing conveyor line 634 and the second pairing conveyor line 635, respectively. The non-qualified product recovery area 680 includes a first recovery area 683 located on the side of the first pairing conveyor line 634 away from the second pairing conveyor line 635, and a second recovery area 684 located between the first pairing conveyor line 634 and the second pairing conveyor line 635. The sorting drive mechanism 6323 is configured to drive the second sorting and picking mechanism 6322 to place the second electrode assembly 251 in a non-qualified state in the second recovery area 684, and to drive the first sorting and picking mechanism 6321 to place the first electrode assembly 250 in a non-qualified state in the first recovery area 683. The sorting drive mechanism 6323 is also configured to drive the first sorting and picking mechanism 6321 to pick up the second electrode assembly 251 from the second recovery area 684 and place it in the first recovery area 683.The first recycling area 683 includes a recycling conveyor belt 685 for conveying the unqualified first electrode assembly 250 and / or the second electrode assembly 251. The first sorting and picking mechanism 6321 and / or the second sorting and picking mechanism 6322 respectively include a first sorting drive 6324, a sorting support 6325, a second sorting drive 6326 and two groups of sorting clamps 6327. Each group of sorting clamps 6327 includes a sorting claw 6328 and a third sorting drive 6329. The first sorting drive 6324 is configured to drive the sorting support 6325 to move closer to or away from the first pairing conveyor line 634 or the second pairing conveyor line 635. The second sorting drive 6326 is configured to drive the sorting support 6325 to move closer to or away from the first pairing conveyor line 634 or the second pairing conveyor line 635. The sorting drive 6326 and two groups of sorting clamps 6327 are arranged on the sorting bracket 6325. The second sorting drive 6326 is configured to change the spacing between the two groups of sorting clamps 6327 along the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251. The third sorting drive 6329 is configured to drive the sorting claw 6328 to clamp the first electrode assembly 250 or the second electrode assembly 251 along the thickness direction of the first electrode assembly 250 or the second electrode assembly 251. The pole ear portion 201 of the first electrode assembly 250 is close to the side surface of the electrode body portion 220 of the first electrode assembly 250 facing the first pairing conveyor line 634, and the pole ear portion 201 of the second electrode assembly 251 is close to the side surface of the electrode body portion 220 of the second electrode assembly 251 facing the second pairing conveyor line 635. The pairing assembly 630 also includes a flipping mechanism 636, which is configured to flip the first of the first electrode assembly 250 and the second electrode assembly 251. The stacking mechanism 633 is configured to stack the electrode body portion 220 of the second of the first electrode assembly 250 and the second electrode assembly 251 on the electrode body portion 220 of the first of the first electrode assembly 250 and the second electrode assembly 251. Alternatively, the pole ear portion 201 of the first electrode assembly 250 is close to the side surface of the electrode body portion 220 of the first electrode assembly 250 away from the first pairing conveyor line 634, and the pole ear portion 201 of the second electrode assembly 251 is close to the side surface of the electrode body portion 220 of the second electrode assembly 251 away from the second pairing conveyor line 635. The pairing assembly 630 also includes a flipping mechanism 636, which is configured to flip the first of the first electrode assembly 250 and the second electrode assembly 251, and the stacking mechanism 633 is configured to stack the electrode body portion 220 of the first of the flipped first electrode assembly 250 and the second electrode assembly 251 on the electrode body portion 220 of the second of the first electrode assembly 250 and the second electrode assembly 251.The flip mechanism 636 includes a first flip drive 6361, a flip bracket 6362, a second flip drive 6363, a third flip drive 6364 and a flip fixture 6365. Each flip fixture 6365 includes two flip clamps 6366 and a fourth flip drive 6367. The first flip drive 6361 is configured to drive the flip bracket 6362 to move closer to or away from the first paired conveyor line 634 or the second paired conveyor line 635. The second flip drive 6363, the third flip drive 6364 and the flip fixture 6365 are configured to On the flip bracket 6362, the second flip driving member 6363 is configured to change the spacing between the two flip clamps 6366 in the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251, the fourth flip driving member 6367 is configured to drive the flip clamp 6366 to clamp the first electrode assembly 250 or the second electrode assembly 251 in the thickness direction of the first electrode assembly 250 or the second electrode assembly 251, and the third flip driving member 6364 is configured to drive the flip clamp 6365 to perform synchronous flipping relative to the flip bracket 6362. The flip bracket 6362 includes two cantilevers 6368 arranged side by side and at intervals, and a connecting arm 6369 connected between the two cantilevers 6368. The flip fixture 6365 is rotatably supported on the free ends of the two cantilevers 6368 respectively. The third flip driving component 6364 includes a rotating motor 6370, a transmission shaft 6371, and two synchronous belts 6372. The transmission shaft 6371 is rotatably supported on the connecting arm 6369 along the spacing direction D9 of the two cantilevers 6368. The rotating motor 6370 drives the transmission shaft 6371 to rotate. The two ends of the transmission shaft 6371 are respectively connected to the corresponding flip fixture 6365 through synchronous belts 6372. The stacking mechanism 633 includes a first stacking drive 6331, a second stacking drive 6332, a stacking bracket 6333, a third stacking drive 6334 and a stacking clamp 6335. Each stacking clamp 6335 includes two stacking jaws 6336 and a fourth stacking drive 6337. The first stacking drive 6331 drives the stacking bracket 6333 in the spacing direction D10 between the first pairing conveyor line 634 and the second pairing conveyor line 635. The second stacking drive 6332 is configured to drive the stacking bracket 6333 to move closer to or away from the first pairing conveyor line 634. For the conveyor line 634 or the second paired conveyor line 635, the third stacking drive 6334 and the stacking clamp 6335 are arranged on the stacking bracket 6333, and the third stacking drive 6334 is configured to change the distance between the two stacking clamps 6336 in the length direction or width direction of the first electrode assembly 250 or the second electrode assembly 251, and the fourth stacking drive 6337 is configured to drive the stacking clamp 6336 to clamp the first electrode assembly 250 or the second electrode assembly 251 in the thickness direction of the first electrode assembly 250 or the second electrode assembly 251.The welding assembly 690 includes a welding conveyor line 691, a welding positioning jig 692 and a welding mechanism 693. The welding positioning jig 692 is used to clamp and fix the paired first electrode assembly 250 and the second electrode assembly 251. The welding conveyor line 691 sends the welding positioning jig 692 into the welding mechanism 693. The welding mechanism 693 welds the pole ear portion 201 of the first electrode assembly 250 and the pole ear portion 201 of the second electrode assembly 251 clamped by the welding positioning jig 692 to each other. The electrode tab 201 includes a first electrode tab 261 and a second electrode tab 262. The welding mechanism 693 includes a first welding mechanism 6931 and a second welding mechanism 6932. The welding conveyor line 691 conveys the welding positioning jig 692 sequentially through the first welding mechanism 6931 and the second welding mechanism 6932. The first welding mechanism 6931 is used to weld the first electrode tab 261 of the first electrode assembly 250 and the first electrode tab 261 of the second electrode assembly 251 to each other. The second welding mechanism 6932 is used to weld the second electrode tab 262 of the first electrode assembly 250 and the second electrode tab 262 of the second electrode assembly 251 to each other. As shown in Figures 15 to 27, the battery processing equipment 600 also includes a coating equipment 300 for the electrode assembly 200. The electrode assembly 200 includes an electrode body 210, which has a first direction D1, a second direction D2, and a third direction D3 that are orthogonal to each other, and includes two main surfaces 211 arranged opposite to each other along the first direction D1, two end surfaces 212 arranged opposite to each other along the second direction D2, and two side surfaces 213 arranged opposite to each other along the third direction D3. The coating device 300 includes a first positioning component 310 and a first coating component 330. The first positioning component 310 is configured to position the electrode assembly 200 and to keep the two main surfaces 211 at least partially exposed. The first coating component 330 is configured to position the coating film 400, wherein the coating film 400 includes two main coating areas 410 spaced apart from each other and a connecting area 420 connected between the two main coating areas 410. At least one of the first positioning assembly 310 and the first covering assembly 330 is configured to drive the electrode assembly 200 and the covering film 400 to perform relative movement, so that the connection area 420 contacts and covers the first one 212a of the two end surfaces 212, and the two main covering areas 410 respectively contact and cover the exposed portion of the corresponding one of the two main surfaces 211. The electrode assembly 200 also includes a pole ear portion 201 protruding from the first one 212a of the two end surfaces 212. The connection area 420 is provided with an opening 421, and the pole ear portion 201 is configured to pass through the opening 421 as the electrode assembly 200 and the covering film 400 move relative to each other. The covering film 400 includes a side covering area 430 connected to the main covering area 410. The covering device 300 also includes a second covering assembly 370, which is configured to drive the side covering area 430 to contact and cover the side surface 213.The covering film 400 includes an end covering region 440 connected to the main covering region 410 . The second covering component 370 is configured to contact the end covering region 440 and cover the second one 212 b of the two end surfaces 212 . The coating film 400 also includes a side coating area 430 and an end coating area 440 connected to the main coating area 410, wherein the side coating area 430 is coated on the side surface 213, and the end coating area 440 is coated on the second of the two end surfaces 212b. The coating device 300 also includes a first tape attaching component 380, which is used to drive the electrode assembly 200 and the first tape 510 to move relative to each other. The first tape 510 includes a first part and a second part connected to each other. The first tape attaching component 380 is arranged to attach the first part 511 of the first tape 510 to the side coating area 430 and the second part 512 of the first tape 510 to the end coating area 440 at the corner formed by the side surface 213 and the second of the two end surfaces 212b. The coating apparatus 300 further includes a second tape attaching assembly 390, which is used to drive relative movement between the electrode assembly 200 and the second tape 520. The second tape 520 includes a first portion and a second portion connected to each other. The second tape attaching assembly 390 is configured to attach the first portion 521 of the second tape 520 to the main coating area 410 and the second portion 522 of the second tape 520 to the side coating area 430 at the corner formed by the side surface 213 and the main surface 211. There are two first portions 521 of the second tape 520, located at both ends of the second portion 522 of the second tape 520. The second tape attaching assembly 390 is configured to attach the two first portions of the second tape 520 to a corresponding one of the two main coating areas 410.

[0279] According to some embodiments of the present application, as shown in FIG5 , the battery processing equipment 600 may further include a coating device 300 for the electrode assembly 200. After welding the first electrode assembly 250 and the second electrode assembly 251 at the electrode ear portion 201, the electrode assembly 200 may be obtained. Thereafter, the electrode assembly 200 may be coated with a coating film 400 to secure and insulate the electrode assembly 200.

[0280] As shown in Figures 15 to 17, the electrode assembly 200 includes an electrode body 210, which has a first direction D1, a second direction D2, and a third direction D3 that are orthogonal to each other, and includes two main surfaces 211 arranged opposite to each other along the first direction D1, two end surfaces 212 arranged opposite to each other along the second direction D2, and two side surfaces 213 arranged opposite to each other along the third direction D3. The coating device 300 includes a first positioning component 310 and a first coating component 330. The first positioning component 310 is configured to position the electrode assembly 200 and to keep the two main surfaces 211 at least partially exposed. The first coating component 330 is configured to position the coating film 400, wherein the coating film 400 includes two main coating areas 410 spaced apart from each other and a connecting area 420 connected between the two main coating areas 410. At least one of the first positioning component 310 and the first covering component 330 is configured to drive the electrode component 200 and the covering film 400 to move relative to each other, so that the connection area 420 contacts and covers the first one 212a of the two end surfaces 212, and the two main covering areas 410 respectively contact and cover the exposed portion of the corresponding one of the two main surfaces 211.

[0281] The first one 212a of the two end surfaces 212 can be connected between the two main surfaces 211 of the electrode body 210, so that the connection region 420 covers the first one 212a of the two end surfaces 212, and the two main covering regions 410 can cover the two main surfaces 211 respectively. In some embodiments, the two main covering regions 410 are movable relative to the connection region 420, so that when the connection region 420 covers the first one 212a of the two end surfaces 212, the two main covering regions 410 can cover the two main surfaces 211 by moving relative to the connection region 420. The first covering component 330 can be configured to drive the two main covering regions 410 to move respectively relative to the connection region 420.

[0282] When the first positioning assembly 310 positions the electrode assembly 200, the first positioning assembly 310 can act on the electrode assembly 200 at the two main surfaces 211, the two side surfaces 213, or the second one 212b of the two end surfaces 212. When the first positioning assembly 310 acts on the electrode assembly 200 at the two main surfaces 211, the two main surfaces 211 are partially exposed. When the first positioning assembly 310 acts on the electrode assembly 200 at the two side surfaces 213 or the second one 212b of the two end surfaces 212, the two main surfaces 211 can be fully exposed.

[0283] By setting the first positioning component 310 and the first covering component 330, the relative position relationship between the two main surfaces 211 and the two covering areas, as well as the relative position relationship between the first one 212a of the two end surfaces 212 and the connecting area 420 can be adjusted. When the covering film 400 covers the two main surfaces 211 of the electrode body 210 and the first one 212a of the two end surfaces 212, the stability of the covering process can be improved, making the covering action more simple and smooth.

[0284] According to some embodiments of the present application, optionally, as shown in Figures 15 to 17, the contact time between the connection area 420 and the first one 212a of the two end surfaces 212 is earlier than the contact time between the two main cladding areas 410 and the corresponding one of the two main surfaces 211.

[0285] The action of the connection area 420 covering the first one 212a of the two end surfaces 212 differs significantly from the action of the two main covering areas 410 covering the two main surfaces 211, making it difficult to perform them simultaneously. If the connection area 420 contacts the first one 212a of the two end surfaces 212 later than the contact time of the two main covering areas 410 with the corresponding one of the two main surfaces 211, the movement of the connection area 420 is restricted by the two main covering areas 410, making it difficult for the connection area 420 to cover the first one 212a of the two end surfaces 212. By setting the contact time between the connection area 420 and the first one 212a of the two end surfaces 212 to be earlier than the contact time between the two main covering areas 410 and the corresponding one of the two main surfaces 211, the two main covering areas 410 can respectively cover the two main surfaces 211 after the connection area 420 covers the first one 212a of the two end surfaces 212, thereby reducing the difficulty of the covering process and helping to simplify the structure of the covering equipment 300.

[0286] According to some embodiments of the present application, optionally, as shown in FIG. 15 to FIG. 17 , the coating process of the two main coating areas 410 on the corresponding one of the two main surfaces 211 is at least partially synchronized.

[0287] The two main coating zones 410 each coat the two main surfaces 211 with minimal difference in their movements, allowing them to be at least partially performed simultaneously. This arrangement helps simplify the coating process and improve coating efficiency. Furthermore, the two main coating zones 410 coat the corresponding one of the two main surfaces 211 simultaneously.

[0288] According to some embodiments of the present application, optionally, as shown in Figures 15 to 17, before the first one 212a of the two end surfaces 212 contacts the connection area 420, the first covering component 330 is configured so that the connection area 420 and the two main covering areas 410 are coplanar with each other.

[0289] By arranging the connection area 420 and the two main covering areas 410 to be coplanar with each other, it is convenient to stack and store the covering films 400, reduce the space occupied by the covering films 400, and facilitate the loading of the covering films 400. For example, the first covering component 330 stretches the covering film 400 by pulling it, thereby making the connection area 420 and the two main covering areas 410 coplanar with each other.

[0290] According to some embodiments of the present application, optionally, as shown in Figures 15 to 17, the first covering component 330 is configured so that the connection area 420 is in a suspended state, and the first one 212a of the two end surfaces 212 is configured to contact the connection area 420 in the suspended state.

[0291] By setting the connection area 420 to be in a suspended state, the interference in the process of the connection area 420 covering the first one 212a of the two end surfaces 212 can be reduced, which is beneficial to improving the fit between the connection area 420 and the first one 212a of the two end surfaces 212, and improving the covering effect of the connection area 420 on the first one 212a of the two end surfaces 212.

[0292] According to some embodiments of the present application, optionally, as shown in Figures 15 to 17, the electrode assembly 200 also includes a pole ear portion 201 protruding from the first one 212a of the two end surfaces 212, and an opening 421 is provided on the connection area 420, and the pole ear portion 201 is configured to pass through the opening 421 as the electrode assembly 200 and the coating film 400 move relative to each other.

[0293] The presence of the pole ear portion 201 increases the difficulty of the coating film 400 coating the first 212a of the two end surfaces 212. The opening 421 provided in the connection region 420 allows the pole ear portion 201 to be avoided, thereby reducing interference with the coating process by the pole ear portion 201, thereby improving the coating effect of the coating film 400 on the first 212a of the two end surfaces 212.

[0294] When the electrode assembly 200 is installed in the housing 100, the electrode ear portion 201 can first be arranged opposite to and spaced from the opening of the housing 100 along the second direction D2, and then the electrode assembly 200 can be moved toward the housing 100 along the second direction D2, so that the electrode ear portion 201 and the first of the two end surfaces 212a enter the housing 100 in sequence. The connection area 420 and the main covering area 410 can form a convergence for the electrode assembly 200, so that the connection between the main surface 211 of the electrode assembly 200 and the first of the two end surfaces 212a forms an arc surface, making the first of the two end surfaces 212a enter the housing 100 more smoothly, facilitating the installation of the electrode assembly 200 into the housing 100, and facilitating improved assembly efficiency and assembly effect.

[0295] Furthermore, the electrode body 210 has no ear portion 201 disposed on the two main surfaces 211, the two side surfaces 213, and the second one 212b of the two end surfaces 212. The coating device 300 controls the coating film 400 to coat the first one 212a of the two end surfaces 212 earlier than the coating device 300 controls the coating film 400 to coat the second one 212b of the two end surfaces 212 of the electrode body 210, the two main surfaces 211, and the two side surfaces 213 of the electrode body 210. During the process of the coating film 400 coating the electrode body 210, it is necessary to fix the edge of the coating film 400 so that the coating film 400 can be fixed to the electrode body 210. The coating device 300 controls the coating film 400 to first coat the first 212a of the two end surfaces 212, so that the edge of the coating film 400 falls outside the first 212a of the two end surfaces 212, so that the electrode ear portion 201 does not interfere with the fixing operation of the edge of the coating film 400, thereby improving the coating effect of the coating film 400 on the electrode body 210. In addition, the edge of the coating film 400 falls outside the first 212a of the two end surfaces 212, which can reduce the risk of the edge of the coating film 400 being squeezed and separated from the electrode body 210 when the first 212a of the two end surfaces 212 enters the housing 100, thereby facilitating the installation of the electrode assembly 200 into the housing 100.

[0296] According to some embodiments of the present application, optionally, as shown in Figures 15 to 17, at least one of the first positioning assembly 310 and the first covering assembly 330 is configured to drive the electrode assembly 200 and the covering film 400 closer to each other along the second direction D2, and after the first 212a of the two end surfaces 212 contacts the connection area 420, the driving electrode assembly 200 continues to move along the second direction D2 relative to the end of the two main covering areas 410 away from the connection area 420, and the first covering assembly 330 is further configured to drive the ends of the two main covering areas 410 closer to each other along the first direction D1, so that the two main covering areas 410 contact and cover the exposed portion of the corresponding one of the two main surfaces 211.

[0297] Specifically, the first positioning component 310 can drive the electrode assembly 200 along the second direction D2 to approach the covering film 400, or the first covering component 330 can drive the covering film 400 along the second direction D2 to approach the electrode assembly 200, or the first positioning component 310 drives the electrode assembly 200 along the second direction D2 to approach the covering film 400 while the first covering component 330 drives the covering film 400 along the second direction D2 to approach the electrode assembly 200, so that the electrode assembly 200 and the covering film 400 approach each other along the second direction D2 until the first one 212a of the two end surfaces 212 contacts the connection area 420 and is covered.

[0298] The two main surfaces 211 can be connected between the two end surfaces 212 along the second direction D2. After the first one 212a of the two end surfaces 212 contacts the connection area 420, by driving the electrode assembly 200 to continue to move along the second direction D2 relative to the two main covering areas 410 away from the end of the connection area 420, the projections of the two main covering areas 410 on the corresponding main surfaces 211 along the first direction D1 can gradually cover the exposed parts of the main surfaces 211. At this time, the first covering assembly 330 can make the two main covering areas 410 contact and cover the exposed parts of the corresponding one of the two main surfaces 211 by respectively driving the ends of the two main covering areas 410 closer to each other along the first direction D1.

[0299] Such a configuration allows the coating film 400 to smoothly connect between the first one 212 a of the two end surfaces 212 and the two main surfaces 211 , thereby simplifying the coating process and improving the coating efficiency.

[0300] According to some embodiments of the present application, optionally, as shown in Figures 15, 16 and 18, the first positioning assembly 310 includes an electrode clamp 311, which is configured to clamp the fixed electrode body 210 from the outside of the two side surfaces 213 along the third direction D3, or to clamp the fixed electrode body 210 from the outside of the two main surfaces 211 along the first direction D1.

[0301] When the electrode fixture 311 clamps the fixed electrode body 210, the electrode fixture 311 and the electrode body 210 can remain relatively fixed. By setting the electrode fixture 311 to clamp the fixed electrode body 210, the first positioning assembly 310 can position the electrode assembly 200. By setting the electrode fixture 311 to clamp the fixed electrode body 210 from the outside of the two side surfaces 213 along the third direction D3, the electrode fixture 311 can avoid the two main surfaces 211 of the electrode body 210, which is beneficial to increase the exposed area of ​​the two main surfaces 211 and improve the covering effect of the two main surfaces 211. The area of ​​the two main surfaces 211 is larger than the area of ​​the two side surfaces 213. By setting the electrode fixture 311 to clamp the fixed electrode body 210 from the outside of the two main surfaces 211 along the first direction D1, it is beneficial to improve the stability of the electrode fixture 311 in clamping the fixed electrode body 210.

[0302] Furthermore, the electrode body 210 includes two electrode body parts 220 described below. By setting the electrode clamp 311 to clamp the fixed electrode body 210 from the outside of the two main surfaces 211 along the first direction D1, it is beneficial to keep the two electrode body parts 220 relatively fixed, thereby improving the stability of the electrode clamp 311 clamping the fixed electrode body 210.

[0303] Optionally, as shown in FIG. 15 and FIG. 18 , the electrode clamp 311 is in transmission connection with the electrode clamping cylinder 313 , and the electrode clamping cylinder 313 can control the electrode clamp 311 to clamp or release the electrode body 210 .

[0304] According to some embodiments of the present application, optionally, as shown in Figures 15 to 17, the first positioning assembly 310 includes an electrode transmission mechanism 312, and the electrode transmission mechanism 312 is configured to drive the electrode assembly 200 to move along the second direction D2 toward the side where the coating film 400 is located, and after the first 212a of the two end surfaces 212 contacts the connection area 420, the first 212a of the two end surfaces 212 and the connection area 420 continue to move synchronously along the second direction D2.

[0305] The electrode transmission assembly can provide power for the electrode assembly 200 to move along the second direction D2. This configuration allows the coating film 400 to smoothly connect between the first one 212a of the two end surfaces 212 and the two main surfaces 211, simplifying the coating process and improving the coating efficiency.

[0306] Furthermore, the electrode transmission mechanism 312 may be in transmission connection with the electrode fixture 311. The electrode transmission mechanism 312 may drive the electrode assembly 200 to move along the second direction D2 by driving the electrode fixture 311 to move along the second direction D2.

[0307] Optionally, the electrode drive mechanism 312 includes an electrode drive motor 314, a screw, and a slider. The electrode drive motor 314 drives the screw to rotate. The slider is sleeved around the screw and threadably engaged with the screw. The slider is fixed relative to the electrode assembly 200, with the screw's rotation axis parallel to the second direction D2. When the electrode drive motor 314 drives the screw to rotate, it drives the slider to move along the screw's rotation axis, thereby driving the electrode assembly 200 to move in the second direction D2.

[0308] According to some embodiments of the present application, optionally, as shown in Figures 15 and 18, the electrode drive mechanism 312 includes an electrode drive motor 314, a first electrode support 3141, and a second electrode support 3142. The electrode drive motor 314 is disposed on the first electrode support 3141, and the electrode drive motor 314 is configured to drive the second electrode support 3142 to move relative to the first electrode support 3141 along a second direction D2. The electrode clamp 311 is disposed on the second electrode support 3142 and includes an electrode clamping claw 3131 and an electrode clamping cylinder 313. The electrode clamping cylinder 313 is configured to drive the electrode clamping claw 3131 to clamp and fix the electrode body 210.

[0309] Such a configuration is beneficial to the stable movement of the electrode assembly 200 and can improve the accuracy of positioning the electrode assembly 200.

[0310] According to some embodiments of the present application, optionally, as shown in Figures 15 to 17, the first covering component 330 includes two first sub-covering components 331 spaced apart from each other, each first sub-covering component 331 respectively includes a membrane clamp 332 and a first membrane transmission mechanism 333, the two membrane clamps 332 respectively clamp and fix the two ends of the covering film 400 away from the connection area 420, and the first membrane transmission mechanism 333 drives the two membrane clamps 332 closer to each other along the first direction D1, so that the area of ​​the main covering area 410 not clamped by the membrane clamp 332 can be bent toward the corresponding main surface 211 relative to the connection area 420.

[0311] In some embodiments, the ends of the covering film 400 away from the connection region 420 may be located in the two main covering regions 410, in which case the main covering regions 410 are clamped by the film clamp 332. In other embodiments, the ends of the covering film 400 away from the connection region 420 may be located outside the two main covering regions 410, in which case the main covering regions 410 are not clamped by the film clamp 332. For example, the covering film 400 includes the following end covering regions 440, and the ends of the covering film 400 away from the connection region 420 may be located in the end covering regions 440.

[0312] When the first film transmission mechanism 333 drives the two film clamps 332 toward each other along the first direction D1, the two film clamps 332 can drive the ends of the coating film 400 away from the connection area 420 toward each other, thereby driving the two main coating areas 410 toward the corresponding main surfaces 211. When the main coating areas 410 are moved toward the corresponding main surfaces 211, the areas of the main coating areas 410 not clamped by the film clamps 332 can bend relative to the connection area 420.

[0313] In the first direction D1, the forces exerted by the two membrane clamps 332 on the connection area 420 through the two main covering areas 410 can offset each other, so that the connection area 420 can remain relatively fixed with the electrode body 210 after contacting the electrode body 210. At the same time, in the second direction D2, the connection area 420 is supported by the electrode body 210, so that the connection area 420 can serve as a fulcrum for bending the area of ​​the main covering area 410 that is not clamped by the membrane clamp 332.

[0314] By setting the two membrane clamps 332 to clamp and fix the two ends of the covering membrane 400 away from the connection area 420 respectively, it is convenient to control the movement of the main covering area 410, which is beneficial for the area of ​​the main covering area 410 not clamped by the membrane clamp 332 to remain in an extended state, facilitating the main covering area 410 to cover the main surface 211, thereby improving the covering effect of the main covering area 410 on the main surface 211.

[0315] Optionally, as shown in FIG. 15 , FIG. 16 and FIG. 19 , the film clamp 332 is in transmission connection with a film clamping cylinder 336 , and the film clamping cylinder 336 can control the film clamp 332 to clamp or release the covering film 400 .

[0316] Optionally, as shown in Figures 15, 16, and 19, the first film transmission mechanism 333 includes a first film transmission motor 337. The two first film transmission motors 337 are used to drive the two film clamps 332 toward each other along the first direction D1. Specifically, the first film transmission mechanism 333 also includes a screw and a slider. The first film transmission motor 337 can drive the screw to rotate. The slider is mounted on the screw and screwed together with the screw via a thread. The slider and the film clamp 332 are fixed relative to each other, and the rotation axis of the screw is set parallel to the first direction D1. When the first film transmission motor 337 drives the screw to rotate, it can drive the slider to move along the rotation axis of the screw, thereby driving the film clamp 332 to move along the first direction D1.

[0317] Optionally, as shown in FIG. 15 , FIG. 16 and FIG. 19 , each film clamp 332 has two film clamping jaws 338 , each film clamping jaw 338 is used to clamp a corner of the covering film 400 , and the four film clamping jaws 338 respectively clamp the four corners of the covering film 400 .

[0318] According to some embodiments of the present application, optionally, as shown in Figures 15, 16, and 19, the first film transmission mechanism 333 includes a first film transmission motor 337, a first film support 3371, and a second film support 342. The first film transmission motor 337 is disposed on the first film support 3371 and is configured to drive the second film support 342 to move relative to the first film support 3371 in a first direction D1. The film clamp 332 is disposed on the second film support 342 and includes a film clamping jaw 338 and a film clamping cylinder 336. The film clamping cylinder 336 is configured to drive the film clamping jaw 338 to clamp and fix the covering film 400.

[0319] Such a configuration is beneficial to the stable movement of the covering film 400 and can improve the accuracy of positioning the covering film 400.

[0320] According to some embodiments of the present application, optionally, as shown in Figures 15, 16 and 19, each first sub-wrapping assembly 331 further includes a second membrane transmission mechanism 334, and the two second membrane transmission mechanisms 334 respectively drive the corresponding membrane clamps 332 to rotate, so that the movement trend of the area of ​​the wrapping film 400 clamped by the membrane clamp 332 relative to the connecting area 420 is consistent with the bending trend of the unclamped area of ​​the main wrapping area 410 relative to the connecting area 420.

[0321] The unclamped area of ​​the main coating region 410 is bent relative to the connection region 420 to form a coating around the main surface 211. After the unclamped area of ​​the main coating region 410 covers the main surface 211, the film clamp 332 can release its clamping force on the coating film 400. The area of ​​the coating film 400 clamped by the film clamp 332 also needs to be coated on the electrode body 210. By arranging the movement trend of the area of ​​the coating film 400 clamped by the film clamp 332 relative to the connection region 420 to be consistent with the bending trend of the unclamped area of ​​the main coating region 410 relative to the connection region 420, the area of ​​the coating film 400 clamped by the film clamp 332 can be brought closer to the electrode body 210, facilitating the coating of the area of ​​the coating film 400 clamped by the film clamp 332 on the electrode body 210.

[0322] In addition, after the membrane clamp 332 releases the clamping of the coating film 400, by setting the movement trend of the area of ​​the coating film 400 clamped by the membrane clamp 332 relative to the connecting area 420 to be consistent with the bending trend of the unclamped area of ​​the main coating area 410 relative to the connecting area 420, the adverse effect of the area of ​​the coating film 400 clamped by the membrane clamp 332 on the main surface 211 of the unclamped area of ​​the main coating area 410 can be reduced, and the risk of the unclamped area of ​​the main coating area 410 falling off from the main surface 211 can be reduced.

[0323] Optionally, as shown in Figures 15, 16, and 19, the second membrane drive mechanism 334 includes a fourth membrane support 339 and a second membrane drive motor 340. The fourth membrane support 339 is provided with a membrane clamp 332, and the second membrane drive motor 340 is used to drive the fourth membrane support 339 to rotate. Furthermore, a membrane clamping cylinder 336 is fixed to the fourth membrane support 339.

[0324] According to some embodiments of the present application, optionally, as shown in Figures 15, 16, and 19, the first film transmission mechanism 333 includes a first film transmission motor 337, a first film support 3371, and a second film support 342. The first film transmission motor 337 is disposed on the first film support 3371 and is configured to drive the second film support 342 to move relative to the first film support 3371 along a first direction D1. The second film transmission mechanism 334 includes a second film transmission motor 340, which is disposed on the second film support 342 and drives the film clamp 332 to rotate. The film clamp 332 includes a film clamping jaw 338 and a film clamping cylinder 336. The film clamping cylinder 336 is configured to drive the film clamping jaw 338 to clamp and fix the covering film 400.

[0325] Such an arrangement can improve the movement freedom of the coating film 400 and enhance the coating effect.

[0326] According to some embodiments of the present application, optionally, as shown in Figures 15, 16, and 19, each first sub-encapsulation assembly 331 further includes a third film transmission mechanism 335. The two third film transmission mechanisms 335 respectively drive the corresponding film clamp 332 to move along the second direction D2 toward the side where the electrode body 210 is located.

[0327] When the film clamp 332 moves along the second direction D2 toward the side where the electrode body 210 is located, the electrode assembly 200 can remain fixed or move along the second direction D2 toward the coating film 400. In this configuration, by driving the film clamp 332 to move along the second direction D2 toward the side where the electrode body 210 is located, the first 212a of the two end surfaces 212 can be brought into contact with the connection area 420, and the main coating area 410 can be driven to move along the second direction D2 toward the side where the electrode body 210 is located, so that the projections of the two main coating areas 410 along the first direction D1 on the corresponding main surfaces 211 can gradually cover the exposed portions of the main surfaces 211, thereby facilitating the main coating areas 410 covering the main surfaces 211.

[0328] Optionally, as shown in Figures 15, 16 and 19, the first positioning assembly 310 includes an electrode transmission mechanism 312, which is configured to drive the electrode assembly 200 to move along the second direction D2 toward the side where the coating film 400 is located, and after the first 212a of the two end faces 212 contacts the connection area 420, the first 212a of the two end faces 212 and the connection area 420 are driven to continue to move synchronously along the second direction D2, and the third membrane transmission mechanism 335 drives the corresponding membrane clamp 332 along the second direction D2 toward the side away from the electrode body 210 after the first 212a of the two end faces 212 contacts the connection area 420.

[0329] The direction in which the film clamp 332 moves along the second direction D2 can be the same as the direction in which the electrode assembly 200 moves along the second direction D2, so that the coating film 400 and the electrode assembly 200 can be moved synchronously to a new station. During the process of synchronously moving the coating film 400 and the electrode assembly 200 to the new station, the displacement stroke of the film clamp 332 moving along the second direction D2 toward the side away from the electrode body 210 is smaller than the displacement stroke of the electrode assembly 200 moving along the second direction D2 toward the side where the coating film 400 is located, so that the coating film 400 and the electrode assembly 200 are relatively displaced, thereby allowing the first 212a of the two end surfaces 212 to contact the connection area 420 and drive the main coating area 410 to move along the second direction D2 toward the side where the electrode body 210 is located, so that the projections of the two main coating areas 410 on the corresponding main surfaces 211 along the first direction D1 can gradually cover the exposed portions of the main surfaces 211, thereby facilitating the main coating areas 410 covering the main surfaces 211.

[0330] Optionally, as shown in Figures 15, 16, and 19, the third film transmission mechanism 335 is provided with a third film transmission motor 341, which is used to drive the film clamp 332 to move in the second direction D2. Specifically, the third film transmission mechanism 335 also includes a screw and a slider. The third film transmission motor 341 can drive the screw to rotate. The slider is mounted on the screw and screwed together with the screw via a thread. The slider is fixed relative to the film clamp 332, and the rotation axis of the screw is set parallel to the second direction D2. When the third film transmission motor 341 drives the screw to rotate, it can drive the slider to move along the rotation axis of the screw, thereby driving the film clamp 332 to move in the second direction D2.

[0331] Optionally, as shown in Figures 15, 16, and 19, the first sub-encapsulation assembly 331 is provided with a second membrane support 342 and a third membrane support 343. The second membrane support 342 extends along the second direction D2, and the third membrane support 343 is slidably disposed on the second membrane support 342 along the second direction D2. The second membrane transmission mechanism 334 and the membrane clamp 332 are disposed on the third membrane support 343. The third membrane transmission mechanism 335 is in transmission connection with the third membrane support 343. The third membrane transmission mechanism 335 can drive the third membrane support 343 to move in the second direction D2, thereby driving the second membrane transmission mechanism 334 and the membrane clamp 332 to move in the second direction D2 via the third membrane support 343. The third membrane transmission mechanism 335 is arranged on the second membrane support 342, and the first membrane transmission mechanism 333 is connected to the second membrane support 342. The first membrane transmission mechanism 333 can drive the second membrane support 342 to move along the first direction D1, thereby driving the third membrane transmission mechanism 335, the third membrane support 343, the second membrane transmission mechanism 334 and the membrane clamp 332 to move along the first direction D1 through the second membrane support 342.

[0332] According to some embodiments of the present application, optionally, as shown in Figures 15, 16, and 19, the first membrane transmission mechanism 333 includes a first membrane transmission motor 337, a first membrane support 3371, and a second membrane support 342. The first membrane transmission motor 337 is disposed on the first membrane support 3371 and is configured to drive the second membrane support 342 to move relative to the first membrane support 3371 along a first direction D1. The third membrane transmission mechanism 335 includes a third membrane transmission motor 341 and a third membrane support 343. The third membrane transmission motor 341 is disposed on the second membrane support 342 and drives the third membrane support 343 to move relative to the second membrane support 342 along a second direction D2. The second film transmission mechanism 334 includes a second film transmission motor 340, which is arranged on the third film support 343 and drives the film clamp 332 to rotate. The film clamp 332 includes a film clamping claw 338 and a film clamping cylinder 336. The film clamping cylinder 336 is configured to drive the film clamping claw 338 to clamp and fix the coating film 400.

[0333] Such an arrangement can further improve the movement freedom of the coating film 400 and enhance the coating effect.

[0334] According to some embodiments of the present application, optionally, as shown in Figures 15, 20 and 21, the coating device 300 also includes a second positioning component 350, which is configured to clamp and fix the coating film 400 and the electrode body 210 from the outside of the two main coating areas 410.

[0335] After the two main covering regions 410 cover the two main surfaces 211 of the electrode body 210, the second positioning assembly 350 can be used to clamp and secure the covering film 400 and the electrode body 210. The second positioning assembly 350 can prevent the main covering regions 410 from separating from the main surfaces 211 of the electrode body 210, thereby improving the stability of the main covering regions 410 covering the main surfaces 211 of the electrode body 210.

[0336] According to some embodiments of the present application, optionally, as shown in FIG. 15 , FIG. 20 and FIG. 21 , the second positioning assembly 350 is a carrying fixture that can be synchronously moved with the covering film 400 and the electrode body 210 .

[0337] By setting the second positioning component 350 as a supporting fixture that can move synchronously with the coating film 400 and the electrode body 210, the coating film 400 and the electrode body 210 can be easily transferred between different workstations, thereby improving the stability of the coating process of the main coating film 400 on the electrode body 210.

[0338] Optionally, the first positioning component 310 is a robot with a clamping function.

[0339] According to some embodiments of the present application, optionally, as shown in Figures 15, 20 and 21, the first positioning assembly 310 is configured to drive the electrode assembly 200 to move along the second direction D2 toward the side where the coating film 400 is located, so that the electrode body 210 and the coating film 400 are inserted into the second positioning assembly 350.

[0340] After the electrode body 210 and the coating film 400 are inserted into the second positioning assembly 350, the second positioning assembly 350 can position the electrode assembly 200. Before and after the coating film 400 covers the main surface 211 of the electrode body 210, the first positioning assembly 310 and the second positioning assembly 350 can alternately position the electrode assembly 200. This can make the movement of the electrode assembly 200 between different workstations smoother, and can also simplify the action and structure of the second positioning assembly 350 to position the electrode assembly 200, which is conducive to improving the coating efficiency.

[0341] Optionally, as shown in Figures 15, 20 and 21, the second positioning assembly 350 has two limit members 353 that can move away from or approach each other. When the electrode body 210 and the coating film 400 are inserted into the second positioning assembly 350, the two limit members 353 can move away from each other, thereby facilitating the insertion of the electrode body 210 and the coating film 400 into the second positioning assembly 350.

[0342] According to some embodiments of the present application, optionally, as shown in Figures 15, 20, and 21, each second positioning assembly 350 includes a fixed bracket 351, an opening and closing mechanism (not labeled), and two limiting members 353. The two limiting members 353 are movably disposed on the fixed bracket 351 along the first direction D1, and a limiting gap 354 is formed between the two. The limiting gap 354 is for the electrode body 210 and the coating film 400 to be inserted. The opening and closing mechanism is configured to drive the two limiting members 353 to move closer to or away from each other.

[0343] Such a configuration can facilitate the insertion of the electrode body 210 and the coating film 400 into the limiting gap 354 , while improving the clamping effect of the electrode body 210 and the coating film 400 .

[0344] According to some embodiments of the present application, optionally, as shown in Figures 15, 20, and 21, each opening and closing mechanism includes an elastic member 355 and an opening mechanism (not shown). The elastic member 355 is disposed between the two limiting members 353 and is configured to elastically drive the two limiting members 353 toward each other, while the opening mechanism is configured to drive the two limiting members 353 away from each other.

[0345] By providing the elastic member 355 , the second positioning assembly 350 can adaptively adjust the clamping force between the electrode body 210 and the coating film 400 .

[0346] Optionally, as shown in FIG. 15 , FIG. 20 and FIG. 21 , a hook plate 356 is provided on the limiting member 353 , and the opening mechanism drives the two limiting members 353 away from each other through the hook plate 356 .

[0347] According to some embodiments of the present application, optionally, as shown in Figures 15, 20, and 21, the opening and closing mechanism includes a rotating member 357, with both ends of the rotating member 357 respectively connected to the two limiting members 353. The middle area of ​​the rotating member 357 is configured to be rotatably connected to the fixed bracket 351. The rotating member 357 is further configured to drive the other limiting member 353 to move in the opposite direction when the first of the two limiting members 353 moves in the first direction D1.

[0348] The rotating member 357 can play a role in transmitting and reversing the motion between the two limiting members 353. By providing the rotating member 357, the two limiting members 353 can achieve synchronous motion and opposite motion directions.

[0349] According to some embodiments of the present application, optionally, as shown in Figures 22 to 25, the covering film 400 includes a side covering area 430 connected to the main covering area 410, and the covering device 300 also includes a second covering component 370, which is configured to contact the transmission side covering area 430 and cover the side surface 213.

[0350] The second coating component 370 can adjust the relative position between the electrode assembly 200 and the side coating region 430. By providing the second coating component 370 to coat the side coating region 430 on the side surface 213, the coating effect of the coating film 400 on the electrode body 210 can be improved.

[0351] According to some embodiments of the present application, optionally, as shown in Figures 22 to 25, the second covering assembly 370 includes a side pressure plate 371, a first pressure plate transmission mechanism 372 and a second pressure plate transmission mechanism 373, the first pressure plate transmission mechanism 372 is used to transmit the side pressure plate 371 along the first direction D1, so that the side pressure plate 371 pushes the side covering area 430 to bend toward the side 213 relative to the main covering area 410, and the second pressure plate transmission mechanism 373 is used to transmit the side pressure plate 371 along the third direction D3, so that the side pressure plate 371 presses the side covering area 430 on the side 213.

[0352] After the main covering region 410 covers the main surface 211 of the electrode body 210, the side covering region 430 and the main covering region 410 may be coplanar or approximately coplanar. Movement of the side pressure plate 371 along the first direction D1 can push the side covering region 430 to bend relative to the main covering region 410. During the bending process, the side covering region 430 gradually approaches the side surface 213 of the electrode body 210. After the side pressure plate 371 pushes the side covering region 430 to bend relative to the main covering region 410 toward the side surface 213, in the third direction D3, the side pressure plate 371 and the side surface 213 of the electrode body 210 may be positioned opposite and spaced apart from each other, with the side covering region 430 positioned between the side pressure plate 371 and the side surface 213 of the electrode body 210. At this time, the side pressing plate 371 moves along the third direction D3 toward the electrode body 210 to press the side covering region 430 against the side surface 213 of the electrode body 210 , so that the side covering region 430 covers the side surface 213 of the electrode body 210 .

[0353] This configuration allows the second covering component 370 to smoothly connect the action of bending the side covering area 430 and the action of covering the side covering area 430 on the side surface 213, which is beneficial to simplifying the action and structure of the second covering component 370 and improving the covering efficiency.

[0354] 22 to 25 , each main coating region 410 may be connected to two side coating regions 430. The two side coating regions 430 connected to the first of the two main coating regions 410 may be designated as B1 and B2, and the two side coating regions 430 connected to the second of the two main coating regions 410 may be designated as B3 and B4. The second coating assembly 370 includes four side pressure plates 371 corresponding to the four side coating regions 430. The four side pressure plates 371 may be designated as C1, C2, C3, and C4. C1, C2, C3, and C4 are used to bend B1, B2, B3, and B4 toward the side surface 213 and press them against the side surface 213 of the electrode body 210.

[0355] Before the four side pressing plates 371 move in the first direction D1, the four side covering areas 430 are located between the four side pressing plates 371. The movement of C1 and C2 in the first direction D1 is opposite to the movement of C3 and C4 in the first direction D1, so that C1 and C2 are brought closer to C3 and C4. This allows C1 and C2 to bend B1 and B2 toward the side surface 213, and C3 and C4 to bend B3 and B4 toward the side surface 213, respectively.

[0356] Before C1 and C2 move along the third direction D3, C1 and C2 are spaced apart from and opposite to the two side surfaces 213, with B1 located between C1 and one side surface 213, and B2 located between C2 and the other side surface 213. The direction in which C1 moves toward the electrode body 210 along the third direction D3 is opposite to the direction in which C2 moves toward the electrode body 210 along the third direction D3, so that C1 and C2 approach each other and press B1 and B2, respectively, against the side surfaces 213 of the electrode body 210. Before C3 and C4 move along the third direction D3, C3 and C4 are spaced apart from and opposite to the two side surfaces 213, with B3 located between C3 and one side surface 213, and B4 located between C4 and the other side surface 213. The direction in which C3 moves toward the electrode body 210 along the third direction D3 is opposite to the direction in which C4 moves toward the electrode body 210 along the third direction D3, so that C3 and C4 approach each other, so that C3 and C4 press B3 and B4 on the side 213 of the electrode body 210 respectively.

[0357] Furthermore, each main covering region 410 is connected to two side covering regions 430. One of the two side covering regions 430 connected to the first of the two main covering regions 410 and one of the two side covering regions 430 connected to the second of the two main covering regions 410 jointly cover one side surface 213 of the electrode body 210. The other of the two side covering regions 430 connected to the first of the two main covering regions 410 and the other of the two side covering regions 430 connected to the second of the two main covering regions 410 jointly cover the other side surface 213 of the electrode body 210. Furthermore, the two side covering regions 430 covering the same side surface 213 of the electrode body 210 may overlap and partially overlap.

[0358] According to some embodiments of the present application, optionally, as shown in Figures 22 to 25, the covering film 400 includes an end covering area 440 connected to the main covering area 410, and the second covering component 370 is configured to contact the transmission end covering area 440 and cover the second one 212b of the two end surfaces 212.

[0359] The second coating component 370 can adjust the relative position between the electrode assembly 200 and the end coating region 440. By providing the second coating component 370 to coat the end coating region 440 on the second end surface 212b of the two end surfaces 212, the coating effect of the coating film 400 on the electrode body 210 can be improved.

[0360] According to some embodiments of the present application, optionally, as shown in Figures 22 to 25, the second covering assembly 370 includes an end face pressure plate 374, a first pressure plate transmission mechanism 372 and a third pressure plate transmission mechanism 375, the first pressure plate transmission mechanism 372 is used to transmit the end face pressure plate 374 along the first direction D1, so that the end face pressure plate 374 pushes the end covering area 440 to bend relative to the main covering area 410 toward the second one 212b of the two end faces 212, and the third pressure plate transmission mechanism 375 is used to transmit the end face pressure plate 374 along the second direction D2, so that the end face pressure plate 374 presses the end covering area 440 on the second one 212b of the two end faces 212.

[0361] After the main coating region 410 is coated on the main surface 211 of the electrode body 210, the end coating region 440 and the main coating region 410 may be coplanar or approximately coplanar. The end surface pressure plate 374 moves along the first direction D1 to push the end coating region 440 to bend relative to the main coating region 410. During the bending process, the end coating region 440 gradually approaches the second one 212b of the two end surfaces 212. After the end surface pressure plate 374 pushes the end coating region 440 to bend relative to the main coating region 410 toward the second one 212b of the two end surfaces 212, the end surface pressure plate 374 and the second one 212b of the two end surfaces 212 may be disposed opposite and spaced apart from each other in the second direction D2, with the end coating region 440 located between the end surface pressure plate 374 and the second one 212b of the two end surfaces 212. At this time, the end surface pressing plate 374 moves along the second direction D2 toward the electrode body 210 to press the end covering region 440 against the second one 212 b of the two end surfaces 212 , so that the end covering region 440 covers the second one 212 b of the two end surfaces 212 .

[0362] Optionally, as shown in Figures 22 to 25, each main covering region 410 is connected to an end covering region 440, and the second covering assembly 370 includes two end surface pressure plates 374. The two end surface pressure plates 374 can be moved in a first direction D1 to move closer to each other, thereby causing the two end covering regions 440 to bend toward the second one 212b of the two end surfaces 212. The two end surface pressure plates 374 can be moved in a second direction D2 to cause the two end covering regions 440 to cover the second one 212b of the two end surfaces 212.

[0363] In some embodiments, the two end cladding regions 440 may overlap and partially connect with each other. One of the two end surface pressing plates 374 may first bend one end cladding region 440 toward the second one 212 b of the two end surfaces 212 and press it onto the second one 212 b of the two end surfaces 212. The other of the two end surface pressing plates 374 may then bend the other end cladding region 440 toward the second one 212 b of the two end surfaces 212 and press it onto the second one 212 b of the two end surfaces 212.

[0364] In some embodiments, the second pressure plate transmission mechanism 373 includes a first pressure plate cylinder 376, and the third pressure plate transmission mechanism 375 includes a second pressure plate cylinder 3761. The second pressure plate cylinder 3761 is used to provide power for driving the end pressure plate 374 in the second direction D2, and the first pressure plate cylinder 376 is used to provide power for driving the side pressure plate 371 in the third direction D3. In other embodiments, the second pressure plate transmission mechanism 373 and the third pressure plate transmission mechanism 375 can be arranged in a coordinated manner. For example, the second pressure plate transmission mechanism 373 and the third pressure plate transmission mechanism 375 share a cylinder to simultaneously provide power for driving the end pressure plate 374 in the second direction D2 and the side pressure plate 371 in the third direction D3. This allows the side pressure plate 371 to move in the third direction D3 toward the side enveloping area 430 while the end pressure plate 374 moves in the second direction D2 toward the end enveloping area 440. This can reduce enveloping time and improve enveloping efficiency.

[0365] Optionally, the end pressure plate 374 and the side pressure plate 371 do not move relative to each other in the first direction D1. The first pressure plate transmission mechanism 372 can simultaneously transmit the end pressure plate 374 and the side pressure plate 371 in the first direction D1. This improves the coating efficiency. Furthermore, when the first pressure plate transmission mechanism 372 transmits the end pressure plate 374 in the first direction D1, it can simultaneously transmit the third pressure plate transmission mechanism 375 in the first direction D1. When the first pressure plate transmission mechanism 372 transmits the side pressure plate 371 in the first direction D1, it can simultaneously transmit the second pressure plate transmission mechanism 373 in the first direction D1.

[0366] Optionally, as shown in Figures 22 to 25, the first pressure plate transmission mechanism 372 is provided with a pressure plate transmission motor 377, which is used to provide power for driving the end pressure plate 374 and the side pressure plate 371 in the first direction D1. Furthermore, the pressure plate transmission motor 377 is used to drive the second pressure plate transmission mechanism 373, the third pressure plate transmission mechanism 375, the end pressure plate 374, and the side pressure plate 371 in the first direction D1.

[0367] Optionally, as shown in Figures 22 to 25, the second covering assembly 370 includes a first pressure plate bracket 378 and a second pressure plate bracket 379. The second pressure plate bracket 379 is slidably disposed on the first pressure plate bracket 378 along the first direction D1. The first pressure plate transmission mechanism 372 is disposed on the first pressure plate bracket 378 and is in transmission connection with the second pressure plate bracket 379 to drive the second pressure plate bracket 379 to move relative to the first pressure plate bracket 378 along the first direction D1. The side pressure plate 371, the second pressure plate transmission mechanism 373, the end pressure plate 374, and the third pressure plate transmission mechanism 375 can be disposed on the second pressure plate bracket 379 and move synchronously with the second pressure plate bracket 379 along the first direction D1.

[0368] Furthermore, the first pressing plate bracket 378 and the second pressing plate bracket 379 are relatively fixedly arranged.

[0369] Optionally, as shown in Figures 22 to 25, the end pressure plate 374 is provided with an adjustable end stopper 3741. The end stopper 3741 is used to abut the main cladding region 410 to limit the position of the electrode assembly 200 in the first direction D1. By adjusting the position of the end stopper 3741 on the end pressure plate 374, it can be used to accommodate electrode assemblies 200 of different sizes, thereby improving the compatibility of the end pressure plate 374 with electrode assemblies 200 of different sizes. Furthermore, the end stopper 3741 is provided with a circular arc surface facing the main cladding region 410, thereby improving the fit with the main cladding region 410.

[0370] Optionally, as shown in Figures 22 to 25, the side pressure plate 371 is provided with an adjustable side limit block 3711. The side limit block 3711 is used to abut the main coating area 410 to limit the electrode assembly 200 in the first direction D1. By adjusting the position of the side limit block 3711 on the side pressure plate 371, it can be matched with electrode assemblies 200 of different sizes, thereby improving the compatibility of the side pressure plate 371 with electrode assemblies 200 of different sizes. Furthermore, the side limit block 3711 is provided with a circular arc surface facing the main coating area 410, thereby improving the fit with the main coating area 410.

[0371] According to some embodiments of the present application, optionally, as shown in Figures 22 to 25, the first platen transmission mechanism 372 includes a platen transmission motor 377, a first platen bracket 378, and a second platen bracket 379. The platen transmission motor 377 is disposed on the first platen bracket 378 and drives the second platen bracket 379 to move relative to the first platen bracket 378. The second platen transmission mechanism 373 includes a first platen cylinder 376, which is disposed on the second platen bracket 379 and drives the side platen 371 to move relative to the second platen bracket 379. The third platen transmission mechanism 375 includes a second platen cylinder 3761, which is disposed on the second platen bracket 379 and drives the end platen 374 to move relative to the second platen bracket 379.

[0372] Such an arrangement can improve the freedom of movement of the side pressure plate 371 and the end pressure plate 374, which is beneficial to improving the covering effect.

[0373] According to some embodiments of the present application, optionally, as shown in Figures 16, 17, 26 and 17, the coating film 400 also includes a side coating area 430 and an end coating area 440 connected to the main coating area 410, wherein the side coating area 430 is coated on the side surface 213, and the end coating area 440 is coated on the second one 212b of the two end surfaces 212, and the coating device 300 also includes a first tape attaching component 380, which is used to drive the electrode assembly 200 and the first tape 510 to move relative to each other, and the first tape 510 includes a first part and a second part connected to each other, and the first tape attaching component 380 is configured to attach the first part 511 of the first tape 510 to the side coating area 430 and attach the second part 512 of the first tape 510 to the end coating area 440 at the corner formed by the side surface 213 and the second one 212b of the two end surfaces 212.

[0374] The first adhesive tape 510 can connect the side covering area 430 and the end covering area 440 together, so that the side covering area 430 and the end covering area 440 can be fixed relative to the electrode body 210 , thereby improving the coating firmness of the covering film 400 on the electrode body 210 .

[0375] Specifically, after the end coating region 440 and the side coating region 430 are pressed against the battery body, the first tape applying assembly 380 can drive the electrode assembly 200 to move so that the side coating region 430 and the first portion 511 of the first tape 510 are positioned relative to each other. The first tape applying assembly 380 then drives the electrode assembly 200 to continue moving so that the first portion 511 of the first tape 510 is attached to the side coating region 430. Thereafter, the first tape applying assembly 380 can drive the electrode assembly 200 to rotate toward the second portion 512 of the first tape 510 so that the second portion 512 of the first tape 510 gradually approaches and is ultimately attached to the end coating region 440.

[0376] Alternatively, the first tape applying assembly 380 may drive the electrode assembly 200 to move so that the end coating region 440 and the second portion 512 of the first tape 510 are disposed opposite each other. The first tape applying assembly 380 then drives the electrode assembly 200 to continue moving so that the second portion 512 of the first tape 510 is attached to the end coating region 440. Thereafter, the first tape applying assembly 380 may drive the electrode assembly 200 to rotate toward the first portion 511 of the first tape 510 so that the first portion 511 of the first tape 510 gradually approaches and is ultimately attached to the side coating region 430.

[0377] Furthermore, the side covering regions 430 connected to the two main covering regions 410 jointly cover the same side surface 213 of the electrode body 210, and the first adhesive tape 510 can function to connect the two side covering regions 430 covering the same side surface 213 of the electrode body 210. The end covering regions 440 connected to the two main covering regions 410 jointly cover the second end surface 212b of the two end surfaces 212, and the first adhesive tape 510 can function to connect the two end covering regions 440 covering the second end surface 212b of the two end surfaces 212.

[0378] 28 to 33 , the first adhesive tape applying assembly 380 further includes a first cutting mechanism 383, a first adhesive dispensing mechanism 386, and a first adhesive pulling mechanism 382. The first adhesive pulling mechanism 382 is configured to clamp and pull the leading end of the release portion of the first adhesive tape roll 384, the first cutting mechanism 383 is configured to cut the first adhesive tape 510 from the release portion of the first adhesive tape roll 384, and the first adhesive dispensing mechanism 386 is configured to absorb the first adhesive tape 510 and apply it to the covering film 400.

[0379] 28 to 33 , the first adhesive tape applying assembly 380 further includes a first adhesive feeding mechanism 387 for conveying the released portion of the first adhesive tape roll 384 for cutting by the first cutting mechanism 383. Furthermore, the first adhesive feeding mechanism 387 includes a roller (not labeled) for conveying the released portion of the first adhesive tape roll 384.

[0380] According to some embodiments of the present application, optionally, as shown in Figures 28 to 33, the first tape attaching assembly 380 includes a first unwinding mechanism 381, a first glue pulling mechanism 382 and a first cutting mechanism 383, the first unwinding mechanism 381 is configured to place and release the first tape roll 384, the first glue pulling mechanism 382 is configured to clamp and pull the head end of the released portion of the first tape roll 384, and the first cutting mechanism 383 is configured to cut the first tape 510 from the released portion of the first tape roll 384.

[0381] Such an arrangement is conducive to automatically providing the first adhesive tape 510 .

[0382] According to some embodiments of the present application, optionally, as shown in Figures 28 to 33, the first glue pulling mechanism 382 includes a first glue clamping cylinder 3821, a first glue pulling motor 3822 and a first glue clamping component 3823, the first glue clamping cylinder 3821 is used to drive the first glue clamping component 3823 to clamp the head end of the release part, and the first glue pulling motor 3822 is used to drive the first glue clamping component 3823 to move to pull the release part.

[0383] The first adhesive pulling motor 3822 drives the first adhesive clamping member 3823 to move to pull the release portion, thereby extending the release portion of the first adhesive tape roll 384 , and the release portion of the first adhesive tape roll 384 is stretched for easy cutting.

[0384] According to some embodiments of the present application, optionally, as shown in Figures 28 to 33, the first unwinding mechanism 381 and the first cutting mechanism 383 are two corresponding groups. The first tape applying assembly 380 includes a switching mechanism 385, which includes a roll holder 3851 and a switching motor 3852. The two groups of the first unwinding mechanism 381 and the first cutting mechanism 383 are arranged on the roll holder 3851. The switching motor 3852 drives the roll holder 3851 to rotate around a predetermined rotation axis, so that the two groups of the first unwinding mechanism 381 and the first cutting mechanism 383 can switch between a standby position and a working position for the first glue pulling mechanism 382 and the first cutting mechanism 383 to operate. The rotation axis is perpendicular to the plane where the release portion is located.

[0385] One first unwinding mechanism 381 and one first cutting mechanism 383 can form a group. Two first unwinding mechanisms 381 and two first cutting mechanisms 383 can form two corresponding groups. This arrangement facilitates rapid rewinding of the first tape roll 384 and improves rewinding efficiency. Specifically, each time a rewind is changed, the switching motor 3852 drives the reel holder 3851 to rotate 180°.

[0386] According to some embodiments of the present application, optionally, as shown in Figures 28 to 33, the first adhesive tape attaching assembly 380 includes a first adhesive dispensing mechanism 386, which is used to absorb and remove the first adhesive tape 510. The first cutting mechanism 383 includes a first pressing block 3831, a first cutter 3832, and a first cutting cylinder 3833. The first pressing block 3831 and the first cutter 3832 are relatively fixedly arranged. The first cutting cylinder 3833 is configured to drive the first pressing block 3831 to press the release portion onto the first adhesive dispensing mechanism 386, and drive the first cutter 3832 to cut the first adhesive tape 510 from the release portion.

[0387] The first pressing block 3831 can be provided to press and position the released portion of the first tape roll 384, thereby improving the stability of the cutting process.

[0388] According to some embodiments of the present application, as shown in Figures 28 to 33, the first adhesive tape applying assembly 380 optionally includes a first adhesive dispensing mechanism 386, which is used to absorb and remove the first adhesive tape 510. The first adhesive dispensing mechanism 386 includes a first adhesive dispensing component 3861, a first adhesive dispensing motor 3862, a second adhesive dispensing motor 3863, a first adhesive dispensing bracket 3864, and a second adhesive dispensing bracket 3865. The first adhesive dispensing component 3861 is used to absorb the first adhesive tape 510. The first adhesive dispensing motor 3862 is disposed on the first adhesive dispensing bracket 3864 and drives the second adhesive dispensing bracket 3865 to move above the release portion of the first adhesive tape roll 384. The second adhesive dispensing motor 3863 is disposed on the second adhesive dispensing bracket 3865 and drives the first adhesive dispensing component 3861 toward and away from the plane where the release portion of the first adhesive tape roll 384 is located.

[0389] Such an arrangement can improve the movement freedom of the first adhesive removing member 3861 , making it easier to absorb and transfer the first adhesive tape 510 .

[0390] According to some embodiments of the present application, as shown in Figures 28 to 33 , the first adhesive dispensing member 3861 optionally includes a first adhesive dispensing sub-portion 3866 and a second adhesive dispensing sub-portion 3867. The first adhesive dispensing sub-portion 3866 is used to absorb the first portion 511 of the first adhesive tape 510 and attach it to the side covering area 430. The second adhesive dispensing sub-portion 3867 is used to absorb the second portion 512 of the first adhesive tape 510 and attach it to the end covering area 440.

[0391] Such an arrangement can improve the continuity of the glue taking action and the glue applying action.

[0392] Optionally, at least one of the first adhesive dispensing sub-portion 3866 and the second adhesive dispensing sub-portion 3867 has an adsorption surface for contacting and adsorbing the first adhesive tape 510. The first adhesive dispensing sub-portion 3866 and the second adhesive dispensing sub-portion 3867 are configured to move relative to each other in a direction perpendicular to the adsorption surface, thereby bending the first adhesive tape 510 adsorbed on the first adhesive dispensing member 3861. For example, one of the first adhesive dispensing sub-portion 3866 and the second adhesive dispensing sub-portion 3867 can be driven to move in a direction perpendicular to the adsorption surface.

[0393] According to some embodiments of the present application, as shown in Figures 28 to 33 , the first adhesive dispensing sub-unit 3866 is optionally a telescopic member. The second adhesive dispensing motor 3863 drives the first adhesive dispensing member 3861 along the third direction D3. The first adhesive dispensing sub-unit 3866 presses the first portion 511 of the first adhesive tape 510 against the side covering area 430 and contracts, allowing the second adhesive dispensing sub-unit 3867 to continue moving along the third direction D3 and adhere to the end covering area 440, thereby attaching the second portion 512 of the first adhesive tape 510 to the end covering area 440. Alternatively, the second adhesive dispensing sub-unit 3867 is a telescopic member. The second glue-picking motor 3863 drives the first glue-picking component 3861 along the second direction D2, and the second sub-glue-picking portion 3867 presses the second portion 512 of the first adhesive tape 510 onto the end covering area 440 and contracts, so that the first sub-glue-picking portion 3866 can continue to move along the second direction D2 and adhere to the side covering area 430, thereby attaching the first portion 511 of the first adhesive tape 510 to the side covering area 430.

[0394] The telescopic member can be telescopic. For example, the telescopic member is an elastic member that is telescopic when subjected to pressure.

[0395] This configuration improves the structural flexibility of the first adhesive dispensing member 3861, enabling it to adaptively adjust its shape according to the shape of the electrode body 210, thereby achieving diverse adhesive application operations. Specifically, when the first adhesive dispensing portion 3866 and the second adhesive dispensing portion 3867 absorb the first adhesive tape 510, the first adhesive tape 510 assumes a planar shape. Compression of one of the first adhesive dispensing portion 3866 and the second adhesive dispensing portion 3867 causes a misalignment between the first adhesive dispensing portion 3866 and the second adhesive dispensing portion 3867, thereby causing the first adhesive tape 510 to bend so that it can be simultaneously applied to the end covering region 440 and the side covering region 430.

[0396] According to some embodiments of the present application, as shown in Figures 28 to 33, the first cutting mechanism 383 is optionally configured to cut two first adhesive tapes 510 from the release portion. Two first adhesive dispensing members 3861 are provided, each of which absorbs a corresponding first adhesive tape 510. The first tape applying assembly 380 includes a first adhesive dispensing mechanism 386, which is configured to absorb and remove the first adhesive tape 510. The first adhesive dispensing mechanism 386 includes a first adhesive dispensing member 3861, a first adhesive dispensing motor 3862, a second adhesive dispensing motor 3863, a first adhesive dispensing bracket 3864, a second adhesive dispensing bracket 3865, a third adhesive dispensing bracket 3868, and an adhesive dispensing cylinder 3869. The first adhesive dispensing member 3861 is configured to absorb the first adhesive tape 510. The first adhesive dispensing motor 3862 is disposed on the first adhesive dispensing bracket 3864 and drives the second adhesive dispensing bracket 3865 to move above the release portion of the first tape roll 384. The second glue dispensing motor 3863 is mounted on the second glue dispensing bracket 3865 and drives the third glue dispensing bracket 3868 and the two first glue dispensing members 3861 toward and away from the plane where the release portion of the first tape roll 384 is located. The glue dispensing cylinder 3869 is mounted on the third glue dispensing bracket 3868 and is configured to drive the two first glue dispensing members 3861 away from each other so that the two first glue dispensing members 3861 correspond to two corners of the electrode assembly 200 spaced apart along the third direction D3.

[0397] For example, the first cutting mechanism 383 is provided with two first cutters 3832 corresponding to the same release portion, and the first cutting cylinder 3833 drives the two first cutters 3832 to move synchronously, so that the two first cutters 3832 can cut out two first tapes 510 each time from the same release portion.

[0398] With this arrangement, the first adhesive removal mechanism 386 can absorb and remove the two first adhesive tapes 510 corresponding to each electrode assembly 200, thereby simultaneously attaching two first adhesive tapes 510 to the two corners of the electrode assembly 200 spaced apart along the third direction D3, thereby improving adhesive application efficiency.

[0399] According to some embodiments of the present application, optionally, as shown in Figures 16, 17, 26 and 27, the coating device 300 also includes a second tape attaching component 390, and the second tape attaching component 390 is used to drive the electrode assembly 200 and the second tape 520 to move relative to each other, and the second tape 520 includes a first part and a second part connected to each other, and the second tape attaching component 390 is configured to attach the first part 521 of the second tape 520 to the main coating area 410 at the corner formed by the side surface 213 and the main surface 211, and attach the second part 522 of the second tape 520 to the side coating area 430.

[0400] Before attaching the second adhesive tape 520, at least a portion of the side coating region 430 is connected only to one of the two main coating regions 410 and is not connected to the other of the two main coating regions 410. The second adhesive tape 520 can connect the side coating region 430 and the other of the main coating regions 410 together, so that the side coating region 430 and the main coating region 410 can be fixed relative to the electrode body 210, thereby improving the coating firmness of the coating film 400 on the electrode body 210.

[0401] For example, after the side wrapping area 430 is pressed against the battery body, the second tape attaching assembly 390 can drive the electrode assembly 200 to move, so that the first part 521 of the second tape 520 gradually approaches and is finally attached to the main wrapping area 410, and then the second tape attaching assembly 390 can drive the electrode assembly 200 to rotate toward the second part 522 of the second tape 520, so that the second part 522 of the second tape 520 gradually approaches and is finally attached to the side wrapping area 430.

[0402] Optionally, as shown in Figures 34 to 40, the second adhesive tape applying assembly 390 further includes a second cutting mechanism 393, a second adhesive dispensing mechanism 395, and a second adhesive pulling mechanism 392. The second adhesive pulling mechanism 392 is used to pull out the second adhesive tape 520, the second cutting mechanism 393 is used to cut the second adhesive tape 520 from the released portion of the second adhesive tape roll 396, and the second adhesive dispensing mechanism 395 is used to suck up the second adhesive tape 520 and apply it to the covering film 400.

[0403] 34 to 40 , the second adhesive tape applying assembly 390 further includes a second adhesive feeding mechanism 397 for conveying the released portion of the second adhesive tape roll 396 for cutting by the second cutting mechanism 393. Furthermore, the second adhesive feeding mechanism 397 includes a roller (not labeled) for conveying the released portion of the second adhesive tape roll 396.

[0404] According to some embodiments of the present application, optionally, as shown in Figures 34 to 40, the number of the first parts 521 of the second tape 520 is two, and they are located at both ends of the second part 522 of the second tape 520, and the second tape attaching component 390 is configured to attach the two first parts of the second tape 520 to the corresponding one of the two main covering areas 410 respectively.

[0405] Such a configuration can increase the contact area between the second adhesive tape 520 and the covering film 400 , thereby improving the fixing effect of the opposite covering area 430 .

[0406] Furthermore, the side covering regions 430 connected to the two main covering regions 410 jointly cover the same side surface 213 of the electrode body 210 , and the second tape 520 can connect the two side covering regions 430 covering the same side surface 213 of the electrode body 210 .

[0407] According to some embodiments of the present application, as shown in Figures 34 to 40, the second tape applying assembly 390 optionally includes a second unwinding mechanism 391, a second adhesive tape pulling mechanism 392, and a second cutting mechanism 393. The second unwinding mechanism 391 is configured to place and release the second adhesive tape roll 396. The second adhesive tape pulling mechanism 392 is configured to clamp and pull the leading end of the released portion of the second adhesive tape roll 396. The second cutting mechanism 393 is configured to cut the second adhesive tape 520 from the released portion of the second adhesive tape roll 396.

[0408] Such an arrangement is conducive to automatically providing the second adhesive tape 520 .

[0409] According to some embodiments of the present application, optionally, as shown in Figures 34 to 40, the second adhesive pulling mechanism 392 includes a second adhesive clamping cylinder 3921, a second adhesive pulling motor 3922, and a second adhesive clamping member 3923. The second adhesive clamping cylinder 3921 is used to drive the second adhesive clamping member 3923 to clamp the head end of the release portion of the second adhesive tape roll 396, and the second adhesive pulling motor 3922 is used to drive the second adhesive clamping member 3923 to move to pull the release portion of the second adhesive tape roll 396.

[0410] The second adhesive pulling motor 3922 drives the second adhesive clamping member 3923 to move to pull the release portion, thereby extending the release portion of the second adhesive tape roll 396 , and the release portion of the second adhesive tape roll 396 is stretched for easy cutting.

[0411] According to some embodiments of the present application, optionally, as shown in Figures 34 to 40, the second unwinding mechanism 391 and the second cutting mechanism 393 are two corresponding groups, and are spaced apart along the width direction D4 of the release portion. The second tape applying assembly 390 includes a glue pulling bracket 394, a glue pulling position change cylinder 3941, and a glue pulling position change bracket 3942. The glue pulling position change cylinder 3941 is disposed on the glue pulling bracket 394, and the second glue pulling mechanism 392 is disposed on the glue pulling position change bracket 3942. The glue pulling position change cylinder 3941 is configured to drive the glue pulling position change bracket 3942 to move along the spacing direction D5 between the two second unwinding mechanisms 391, so that the second glue pulling mechanism 392 can switch between a standby position and a working position for the second glue pulling mechanism 392 to operate. A set of the second unwinding mechanism 391 and the second cutting mechanism 393 are each provided at the standby position and the working position.

[0412] One second unwinding mechanism 391 and one second cutting mechanism 393 can form a group. Two second unwinding mechanisms 391 and two second cutting mechanisms 393 can form two corresponding groups. By providing two sets of second unwinding mechanisms 391 and second cutting mechanisms 393, interference with the adhesive tape application process caused by the rewinding operation of the second adhesive tape roll 396 can be reduced, thereby improving adhesive tape application efficiency. Furthermore, the two sets of second unwinding mechanisms 391 and second cutting mechanisms 393 are arranged in layers along the height direction of the second adhesive tape application assembly 390.

[0413] By setting the glue pulling and shifting cylinder 3941 to drive the glue pulling and shifting bracket 3942 to move along the spacing direction D5 of the two second unwinding mechanisms 391, the position of the glue pulling mechanism can correspond to the position of a group of second unwinding mechanisms 391 and second cutting mechanisms 393 that are working, thereby facilitating the glue pulling operation.

[0414] According to some embodiments of the present application, optionally, as shown in Figures 34 to 40, the second tape applying assembly 390 includes a second adhesive dispensing mechanism 395, which is used to absorb and remove the second adhesive tape 520. The second cutting mechanism 393 includes a second pressing block 3931, a second cutter 3932, and a second cutting cylinder 3933. The second pressing block 3931 and the second cutter 3932 are relatively fixedly arranged. The second cutting cylinder 3933 is configured to drive the second pressing block 3931 to press the released portion of the second tape roll 396 against the second adhesive dispensing mechanism 395, and drive the second cutter 3932 to cut the second adhesive tape 520 from the released portion of the second tape roll 396.

[0415] The second pressing block 3931 can be provided to press and position the released portion of the second tape roll 396, thereby improving the stability of the cutting process.

[0416] According to some embodiments of the present application, as shown in Figures 34 to 40, the second adhesive tape applying assembly 390 optionally includes a second adhesive dispensing mechanism 395, which is used to absorb and remove the second adhesive tape 520. The second adhesive dispensing mechanism 395 includes a second adhesive dispensing member 3951, a fourth adhesive dispensing motor 3952, and a fourth adhesive dispensing bracket 3953. The second adhesive dispensing member 3951 is used to absorb the second adhesive tape 520. The fourth adhesive dispensing motor 3952 is disposed on the fourth adhesive dispensing bracket 3953 and drives the second adhesive dispensing member 3951 to move to a position opposite to the release portion of the second adhesive tape roll 396 along the thickness direction D6 of the release portion of the second adhesive tape roll 396, and drives the second adhesive dispensing member 3951 toward and away from the plane where the release portion of the second adhesive tape roll 396 is located.

[0417] Such an arrangement can improve the movement freedom of the second adhesive removal member 3951 , making it easier to absorb and transfer the second adhesive tape 520 .

[0418] According to some embodiments of the present application, as shown in Figures 34 to 40 , the second adhesive dispensing member 3951 optionally includes a third adhesive dispensing portion 3954 and a fourth adhesive dispensing portion 3955. The third adhesive dispensing portion 3954 is used to absorb the first portion 521 of the second adhesive tape 520 and attach it to the main covering area 410. The fourth adhesive dispensing portion 3955 is used to absorb the second portion 522 of the second adhesive tape 520 and attach it to the side covering area 430.

[0419] Such an arrangement can improve the continuity of the glue taking action and the glue applying action.

[0420] Optionally, at least one of the third adhesive dispensing portion 3954 and the fourth adhesive dispensing portion 3955 has an adsorption surface for contacting and adsorbing the second adhesive tape 520. The third adhesive dispensing portion 3954 and the fourth adhesive dispensing portion 3955 are configured to move relative to each other in a direction perpendicular to the adsorption surface, thereby bending the second adhesive tape 520 adsorbed on the second adhesive dispensing member 3951. For example, one of the third adhesive dispensing portion 3954 and the fourth adhesive dispensing portion 3955 can be driven to move in a direction perpendicular to the adsorption surface.

[0421] According to some embodiments of the present application, as shown in Figures 34 to 40 , the fourth adhesive dispensing sub-unit 3955 is optionally a telescopic member. The fourth adhesive dispensing motor 3952 drives the second adhesive dispensing member 3951 along the third direction D3. The fourth adhesive dispensing sub-unit 3955 presses the second portion 522 of the second adhesive tape 520 against the side wrapping area 430 and contracts, allowing the third adhesive dispensing sub-unit 3954 to continue moving along the third direction D3 and adhere to the main wrapping area 410, thereby attaching the first portion 521 of the second adhesive tape 520 to the main wrapping area 410.

[0422] The telescopic member can be telescopic. For example, the telescopic member is an elastic member.

[0423] This configuration improves the structural flexibility of the second adhesive dispensing member 3951, enabling it to adaptively adjust its shape according to the shape of the electrode body 210, thereby achieving diverse adhesive application operations. Specifically, when the third and fourth adhesive dispensing portions 3954 and 3955 absorb the second adhesive tape 520, the second adhesive tape 520 assumes a planar shape. The fourth adhesive dispensing portion 3955 compresses, causing the first and second adhesive dispensing portions 3866 and 3867 to be misaligned, thereby bending the second adhesive tape 520 so that it can be simultaneously applied to both the main and side coating regions 410 and 430. Furthermore, the fourth adhesive dispensing portion 3955 is positioned between the two third adhesive dispensing portions 3954. During adhesive application, both third adhesive dispensing portions 3954 can be misaligned with the fourth adhesive dispensing portion 3955, enabling the second adhesive tape 520 to be simultaneously applied to both the main and side coating regions 410 and 430.

[0424] According to some embodiments of the present application, as shown in Figures 34 to 40 , the second unwinding mechanism 391 and the second cutting mechanism 393 are optionally provided in two corresponding sets, spaced apart along the width direction D4 of the released portion of the second adhesive tape roll 396. The second adhesive dispensing mechanism 395 includes an adhesive dispensing and shifting cylinder 3956 and an adhesive dispensing and shifting bracket 3957. The adhesive dispensing and shifting cylinder 3956 is provided on the fourth adhesive dispensing bracket 3953, and the second adhesive dispensing member 3951 is provided on the adhesive dispensing and shifting bracket 3957. The adhesive dispensing and shifting cylinder 3956 is configured to drive the adhesive dispensing and shifting bracket 3957 to move along the spacing direction D5 between the two second unwinding mechanisms 391, enabling the second adhesive dispensing member 3951 to switch between a standby position and a working position for the second adhesive dispensing mechanism 395 to operate. A set of the second unwinding mechanism 391 and the second cutting mechanism 393 is provided in each of the standby position and the working position.

[0425] Each second unwinding mechanism 391 and second cutting mechanism 393 can form a group. Providing two sets of second unwinding mechanisms 391 and second cutting mechanisms 393 can reduce interference with the adhesive tape removal process caused by the second tape roll 396 reel change operation, thereby improving adhesive tape removal efficiency. Furthermore, the two sets of second unwinding mechanisms 391 and second cutting mechanisms 393 are arranged in layers along the height direction of the second tape applying assembly 390.

[0426] By setting the glue taking and shifting cylinder 3956 to drive the glue taking and shifting bracket 3957 to move along the spacing direction D5 of the two second unwinding mechanisms 391, the position of the second glue taking component 3951 can correspond to the position of a group of working second unwinding mechanisms 391 and second cutting mechanisms 393, thereby facilitating the glue taking operation.

[0427] According to some embodiments of the present application, optionally, as shown in Figures 34 to 40, the second tape applying assembly 390 includes a third positioning assembly 360, and the third positioning assembly 360 includes a main pressing cylinder 361, a main pressing member 362, a side pressing cylinder 363, and a side pressing member 364. The main pressing cylinder 361 is configured to drive the main pressing member 362 to press the main covering area 410 and the main surface 211, and the side pressing cylinder 363 is configured to drive the side pressing member 364 to press the side covering area 430 and the side surface 213.

[0428] The side pressing members 364 and the main pressing member 362 clamp and position the electrode assembly 200 and the coating film 400. The main pressing member 362 is configured to avoid the attachment position of the second adhesive tape 520 when pressing the main coating area 410 and the main surface 211. The side pressing members 364 are configured to avoid the attachment position of the second adhesive tape 520 when pressing the side coating area 430 and the side surface 213. This configuration improves the stability of the adhesive application process.

[0429] According to some embodiments of the present application, as shown in Figures 34 to 40 , the third positioning assembly 360 optionally includes a flip motor 365 and a rotating bracket 366. The main holding cylinder 361, the main holding member 362, the side holding cylinder 363, and the side holding member 364 are disposed on the rotating bracket 366. The flip motor 365 is configured to drive the rotating bracket 366 to rotate. The axis of rotation of the rotating bracket 366 is parallel to the second direction D2.

[0430] This configuration can improve the freedom of movement of the electrode assembly 200 and facilitate the attachment of the second tape 520 to different locations of the electrode assembly 200. Furthermore, the flip motor 365 is configured to drive the rotating bracket 366 to rotate 180° so that the second tape 520 can be attached to opposite sides of the electrode assembly 200.

[0431] According to some embodiments of the present application, optionally, as shown in Figures 34 to 40, the second tape applying assembly 390 includes two second unwinding mechanisms 391. The third positioning assembly 360 includes a shift motor 367 and a shift bracket 368. The main pressing cylinder 361, the main pressing member 362, the side pressing cylinder 363, the side pressing member 364, the flip motor 365, and the rotating bracket 366 are disposed on the shift bracket 368. The shift motor 367 is configured to drive the shift bracket 368 to move along the spacing direction D5 between the two second unwinding mechanisms 391.

[0432] Each second unwinding mechanism 391 and second cutting mechanism 393 can form a group. Providing two sets of second unwinding mechanisms 391 and second cutting mechanisms 393 can reduce interference with the adhesive application process caused by the second tape roll 396 being changed, thereby improving adhesive removal efficiency. Furthermore, the two sets of second unwinding mechanisms 391 and second cutting mechanisms 393 are arranged in layers along the height direction of the second tape application assembly 390.

[0433] By setting the shift motor 367 to drive the shift bracket 368 to move along the spacing direction D5 of the two second unwinding mechanisms 391, the position of the electrode assembly 200 can correspond to the position of a group of working second unwinding mechanisms 391 and second cutting mechanisms 393, thereby facilitating the gluing operation.

[0434] According to some embodiments of the present application, optionally, as shown in Figures 4 and 41, the electrode body 210 includes two electrode body parts 220 stacked on each other along the first direction D1, and each electrode body part 220 includes a positive electrode plate 221, a diaphragm 222 and a negative electrode plate 223 arranged in sequence.

[0435] Such a configuration is beneficial to improving the space utilization of the electrode assembly 200 and increasing the energy storage density of the electrode assembly 200.

[0436] Furthermore, the two electrode main bodies 220 can be connected in series or in parallel via the electrode ear portion 201 .

[0437] Optionally, the two electrode main bodies 220 may be fixed together by a fixing member 230 to improve the stability of the coating process. For example, the fixing member 230 is an adhesive tape.

[0438] Optionally, as shown in FIG26 , the coating equipment 300 further includes a coating film loading mechanism 301, an electrode assembly unloading mechanism 302, a jig conveyor line 303, a robot track 304, and a dust removal mechanism 305. The coating film loading mechanism 301 can suck the coating film 400 through negative pressure and then transfer the coating film 400 to the first coating assembly 330. After the film clamp 332 positions the coating film 400, the coating film loading mechanism 301 can leave the coating film 400. The jig conveyor line 303 can be used to transport the second positioning assembly 350, allowing the second positioning assembly 350 to reach different workstations, or allowing the second positioning assembly 350 to carry the electrode assembly 200 to different workstations. The electrode assembly unloading mechanism 302 can move the electrode assembly 200 to other processes after the coating film 400 coats the electrode assembly 200.

[0439] The robot track 304 can provide support for certain mechanisms requiring movement, allowing them to move along the robot track 304. For example, the coating film loading mechanism 301 and the electrode assembly unloading mechanism 302 can be slidably disposed on the robot track 304. The robot track 304 can be intersected with the jig conveyor line 303, allowing the second positioning assembly 350 to switch between moving along the robot track 304 and along the jig conveyor line 303. For example, at least two robot tracks 304 can be interwoven with at least two jig conveyor lines 303.

[0440] The jig conveyor line 303 can be interposed within the dust removal mechanism 305, allowing the dust removal mechanism 305 to remove dust from the second positioning assembly 350 that is moved within the dust removal mechanism 305. For example, the dust removal mechanism 305 can remove dust from the unloaded second positioning assembly 350 by blowing and exhausting air. Furthermore, different jig conveyor lines 303 can be interconnected, allowing the second positioning assembly 350 to circulate through different jig conveyor lines 303.

[0441] Optionally, the first tape attaching assembly 380 or the second tape attaching assembly 390 may be disposed on one side of the jig conveyor line 303 , so as to be able to adhere the first tape 510 or the second tape 520 to the electrode assembly 200 covered with the coating film 400 on the jig conveyor line 303 .

[0442] Optionally, the battery processing equipment 600 further includes a conveying device and an assembly device. The conveying device is used to transport the structures to be assembled to the various workstations of the assembly equipment. The workstations of the assembly equipment include at least a welding assembly 690, a shell insertion device, a tab insertion device, a pole welding device, and a bottom cover welding device.

[0443] The welding assembly 690 is used to weld the multiple tabs of the electrode assembly 200 to form the tab portion 201. The shell insertion device is used to install the electrode assembly 200 into the shell 100 from the open end 112. The tab insertion device is used to clamp the tab portion 201 through the through-hole when the electrode assembly 200 is installed in the shell. The pole welding device is used to weld the tab portion 201 passing through the through-hole to the side of the pole facing away from the accommodating cavity. The bottom cover welding device is used to weld the bottom cover to the open end 112 of the shell 100.

[0444] It should be noted that, in this embodiment, the conveying equipment includes a conveyor line, which can be a conveying structure formed by a motor-driven conveyor roller and a conveyor belt, or a conveying structure formed by a motor-driven conveyor chain link, or an AGV conveyor cart, which can realize conveying in at least one direction and can support and ensure the stability of the structure to be assembled.

[0445] The purpose of the welding assembly 690 is to form the pole ear portion 201 after pre-welding the pole ear sheet, and it can be an ultrasonic welding device, which can ensure that the pole ear is welded in a clamped and stable state. The shell entry device is a pushing mechanism or a clamping mechanism, which can stably move the electrode assembly 200 toward the open end 112 of the shell 100 and enter the accommodating cavity through the open end 112. Similarly, the pole ear piercing device can adopt a clamping structure or a guiding structure, which can guide the pole ear portion 201 to pass through the through hole smoothly without interfering with the shell 100. The pole column welding device is intended to realize the welding of the pole ear portion 201 and the pole, and it can be a laser welding device. The bottom cover welding device is intended to realize the circumferential edge welding of the bottom cover and the open end 112 of the shell 100, and is also a laser welding device.

[0446] In addition, the assembly equipment is not limited to including a welding assembly 690, a shell insertion device, a tab insertion device, a pole welding device, and a bottom cover welding device. For example, when the electrode assembly 200 includes multiple electrode main bodies 220, for example, when it includes two electrode main bodies 220, the assembly equipment also includes a matching assembly, which is used to stack the multiple electrode main bodies 220 so that the tabs of the two electrode main bodies 220 are roughly opposite each other, so that the conveying structure can convey the matched electrode main bodies 220 to the welding assembly 690 for welding the tabs to facilitate the formation of the tab portion 201. For example, in order to ensure the reliability of the battery assembly process, dust removal, NG detection stations, etc. can also be added between any two adjacent stations, which is not limited in this embodiment.

[0447] According to some embodiments of the present application, the battery processing method described in the battery processing method embodiment includes: S100: controlling the material conveying assembly to convey the first electrode assembly and the second electrode assembly, wherein the first electrode assembly and the second electrode assembly respectively include an electrode body and a pole ear portion provided on the electrode body. S200: controlling the pairing assembly to pair the first electrode assembly and the second electrode assembly so that the electrode body of the first electrode assembly and the electrode body of the second electrode assembly are stacked on each other. S300: controlling the welding assembly to weld the pole ear portion of the paired first electrode assembly and the pole ear portion of the second electrode assembly to each other.

[0448] According to some embodiments of the present application, optionally, controlling the pairing assembly to pair the first electrode assembly with the second electrode assembly includes:

[0449] S210: Control the pairing loading mechanism to pick up the first electrode assembly and the second electrode assembly in pairs, and place them on the first detection conveyor line and the second detection conveyor line respectively.

[0450] S220: Control the sorting mechanism to pair the first electrode assembly and the second electrode assembly in a qualified state.

[0451] S230: Controlling the stacking mechanism to stack the paired electrode body of the first electrode assembly and the electrode body of the second electrode assembly.

[0452] According to some embodiments of the present application, optionally, controlling the sorting mechanism to pair the first electrode assembly and the second electrode assembly in a qualified state includes:

[0453] S221: When the first electrode assembly and the second electrode assembly picked up in pairs are both in a qualified state, the first electrode assembly and the second electrode assembly picked up in pairs are used as the paired first electrode assembly and the second electrode assembly.

[0454] According to some embodiments of the present application, the battery processing equipment may optionally be provided with a non-conforming product recycling area. Controlling the sorting mechanism to pair the first electrode assembly and the second electrode assembly in a qualified state includes: S222: When at least one of the first electrode assembly and the second electrode assembly picked up in a paired manner is in a non-conforming state, sorting the non-conforming first electrode assembly and / or the non-conforming second electrode assembly to the non-conforming product recycling area.

[0455] According to some embodiments of the present application, optionally, the battery processing equipment is provided with a first qualified product temporary storage area corresponding to the first electrode assembly and a second qualified product temporary storage area corresponding to the second electrode assembly, and the control sorting mechanism is configured to pair the first electrode assembly and the second electrode assembly in a qualified state, including:

[0456] S223: When the first electrode assembly and the second electrode assembly picked up in pairs are in a qualified state and the second electrode assembly is in an unqualified state, and the second electrode assembly does not exist in the second qualified product temporary storage area, the first electrode assembly is sorted to the first qualified product temporary storage area, and the unqualified second electrode assembly is sorted to the unqualified product recycling area.

[0457] S224: When the first electrode assembly in the first electrode assembly and the second electrode assembly picked up in pairs is in an unqualified state and the second electrode assembly is in a qualified state, and the first electrode assembly does not exist in the first qualified product temporary storage area, the unqualified first electrode assembly is sorted to the unqualified product recovery area, and the second electrode assembly is sorted to the second qualified product temporary storage area.

[0458] According to some embodiments of the present application, the battery processing equipment is optionally provided with a first qualified product temporary storage area corresponding to the first electrode assembly and a second qualified product temporary storage area corresponding to the second electrode assembly. Controlling the sorting mechanism to pair the first electrode assembly and the second electrode assembly in a qualified state includes:

[0459] S225: When the first electrode assembly and the second electrode assembly picked up in pairs are in a qualified state and the second electrode assembly is in an unqualified state, and the second electrode assembly exists in the second qualified product temporary storage area, the unqualified second electrode assembly is sorted to the unqualified product recovery area, and the second electrode assembly in the second qualified product temporary storage area is moved back to the second pairing conveyor line.

[0460] S226: When the first electrode assembly in the first electrode assembly and the second electrode assembly picked up in pairs is in an unqualified state, the second electrode assembly is in a qualified state, and the first electrode assembly exists in the first qualified product temporary storage area, the unqualified first electrode assembly is sorted to the unqualified product recovery area, and the first electrode assembly in the first qualified product temporary storage area is moved back to the first pairing conveyor line.

[0461] According to some embodiments of the present application, optionally, controlling the welding assembly to weld the paired electrode ear portion of the first electrode assembly and the electrode ear portion of the second electrode assembly to each other includes:

[0462] S310: Controlling the jig adjustment mechanism to adjust the welding positioning jig to clamp and fix the paired first electrode assembly and the second electrode assembly.

[0463] S320: Control the welding conveyor line to send the welding positioning fixture into the welding mechanism.

[0464] S330: Controlling the welding mechanism to weld the electrode ear portion of the first electrode assembly and the electrode ear portion of the second electrode assembly clamped by the welding positioning fixture.

[0465] Regarding the battery processing method embodiment of the present application, please refer to the relevant content of the battery processing equipment embodiment above, which will not be repeated here.

[0466] To sum up, the embodiments of the present application can achieve pairing of the first electrode assembly and the second electrode assembly, and make the electrode body of the first electrode assembly and the electrode body of the second electrode assembly overlap with each other, so as to achieve alignment of the first electrode assembly and the second electrode assembly, and also achieve stable connection between the first electrode assembly and the second electrode assembly.

[0467] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery processing equipment, characterized in that: The battery processing equipment comprises: A material conveying assembly, used for conveying a first electrode assembly and a second electrode assembly, wherein the first electrode assembly and the second electrode assembly respectively include an electrode body and an electrode ear portion disposed on the electrode body; a pairing assembly for pairing the first electrode assembly and the second electrode assembly so that the electrode body of the first electrode assembly and the electrode body of the second electrode assembly are stacked on each other; The welding assembly is used to weld the paired pole ear portion of the first electrode assembly and the pole ear portion of the second electrode assembly to each other.

2. The battery processing equipment according to claim 1, characterized in that: The material conveying assembly includes a first branch conveying line and a second branch conveying line, wherein the first branch conveying line is used to convey a plurality of the first electrode assemblies, and the second branch conveying line is used to convey a plurality of the second electrode assemblies.

3. The battery processing equipment according to claim 2, characterized in that: The material conveying assembly also includes a main conveying line and a diversion mechanism, the main conveying line is used to convey the multiple first electrode assemblies and the multiple second electrode assemblies, and the diversion mechanism is used to divert the first electrode assembly from the main conveying line to the first branch conveying line, and to divert the second electrode assembly from the main conveying line to the second branch conveying line.

4. The battery processing equipment according to claim 3, characterized in that: The first branch conveyor line and the second branch conveyor line are respectively connected to the main conveyor line to form a first connection point and a second connection point, the first connection point is located upstream of the second connection point, the flow diversion mechanism includes a flow diversion detection member, a flow guide member and a flow guide driving member, wherein the flow diversion detection member is arranged on the main conveyor line and is located upstream of the first connection point, the flow diversion detection member is used to detect whether the object flowing to the first connection point is the first electrode assembly or the second electrode assembly, the flow guide member is arranged at the first connection point, and the flow guide driving member drives the flow guide member to a first position in response to the object arriving at the first connection point being the first electrode assembly, so that the first electrode assembly flows to the first branch conveyor line under the action of the flow guide member; In response to the object arriving at the first connection point being the second electrode assembly, the flow guide driving member drives the flow guide member to a second position, so that the second electrode assembly continues to flow along the main conveying line to the second connection point.

5. The battery processing equipment according to claim 2, characterized in that: The material conveying assembly includes a first branch return line and a second branch return line, the first branch conveying line is used to convey a first pallet and the first electrode assembly carried on the first pallet, the second branch conveying line is used to convey a second pallet and the second electrode assembly carried on the second pallet, the first branch return line is used to reflow the first pallet, and the second branch return line is used to reflow the second pallet.

6. The battery processing equipment according to claim 5, characterized in that: The first branch conveyor line and the second branch conveyor line are arranged side by side in the horizontal direction, the first branch return line is located below the first branch conveyor line in the vertical direction, and the second branch return line is located below the second branch conveyor line in the vertical direction.

7. The battery processing equipment according to claim 6, characterized in that: The battery processing equipment includes a transfer mechanism, which is used to transfer the first pallet on the first branch conveyor line to the first branch return line, and / or transfer the second pallet on the second branch conveyor line to the second branch return line.

8. The battery processing equipment according to claim 7, characterized in that: The transfer mechanism includes a transfer platform, a transfer conveyor belt, a belt driver and a platform driver. The transfer conveyor belt is arranged on the transfer platform. The belt driver drives the transfer conveyor belt to move so as to move the first pallet and / or the second pallet into or out of the transfer platform. The platform driver drives the transfer platform along the vertical direction so that the transfer platform selectively docks with the first branch conveyor line or the first branch return line, and / or the transfer platform selectively docks with the second branch conveyor line or the second branch return line.

9. The battery processing equipment according to claim 5, characterized in that: The material conveying assembly further includes a main return line and a merging mechanism, wherein the merging mechanism is used to merge the first tray on the first branch return line and the second tray on the second branch return line to the main return line.

10. The battery processing equipment according to claim 1, characterized in that: The battery processing equipment also includes a detection component, which is used to detect the first electrode assembly and the second electrode assembly, and the pairing component is configured to perform pairing based on the detection status of the first electrode assembly and the second electrode assembly.

11. The battery processing equipment according to claim 10, characterized in that: The detection component includes a first detection conveyor line, a second detection conveyor line, a first detection mechanism, a second detection mechanism, and a detection loading mechanism. The detection loading mechanism picks up the first electrode assembly and the second electrode assembly from the material conveying component and places them on the first detection conveyor line and the second detection conveyor line, respectively. The first detection conveyor line transports the first electrode assembly through the first detection mechanism, and the second detection conveyor line transports the second electrode assembly through the second detection mechanism.

12. The battery processing equipment according to claim 11, characterized in that: The material conveying assembly includes a first branch conveyor line and a second branch conveyor line, the first branch conveyor line is used to convey multiple first electrode assemblies, and the second branch conveyor line is used to convey multiple second electrode assemblies. The detection and loading mechanism includes a first detection and loading mechanism and a second detection and loading mechanism, the first detection and loading mechanism is used to pick up the first electrode assembly from the first branch conveyor line and place it on the first detection conveyor line, the second detection and loading mechanism is used to pick up the second electrode assembly from the second branch conveyor line and place it on the second detection conveyor line, and the picking and placing actions of the first detection and loading mechanism and the second detection and loading mechanism are relatively independent.

13. The battery processing equipment according to claim 10, characterized in that: The pairing assembly includes a pairing loading mechanism, a sorting mechanism, a stacking mechanism, and a first pairing conveyor line and a second pairing conveyor line arranged side by side. The pairing loading mechanism is configured to pick up the first electrode assembly and the second electrode assembly in pairs and place them on the first pairing conveyor line and the second pairing conveyor line, respectively. The sorting mechanism is configured to pair the first electrode assembly and the second electrode assembly in a qualified state. The stacking mechanism is configured to stack the electrode body of the first electrode assembly and the electrode body of the second electrode assembly after pairing.

14. The battery processing equipment according to claim 13, characterized in that: The pairing includes directly using the first electrode assembly and the second electrode assembly picked up in pairs as the paired first electrode assembly and the second electrode assembly when both of the first electrode assembly and the second electrode assembly picked up in pairs are in a qualified state.

15. The battery processing equipment according to claim 13, characterized in that: The battery processing equipment is provided with a non-conforming product recovery area, and the pairing includes sorting the non-conforming first electrode assembly and / or second electrode assembly to the non-conforming product recovery area when at least one of the first electrode assembly and the second electrode assembly picked up in the paired manner is in a non-conforming state.

16. The battery processing equipment according to claim 15, characterized in that: The battery processing equipment is provided with a first qualified product temporary storage area corresponding to the first electrode assembly and a second qualified product temporary storage area corresponding to the second electrode assembly, The pairing includes sorting the first electrode assembly to the first qualified product temporary storage area and sorting the unqualified second electrode assembly to the unqualified product recycling area when the first electrode assembly and the second electrode assembly picked up in the paired manner are in a qualified state and the second electrode assembly is in a non-qualified state, and the second electrode assembly does not exist in the second qualified product temporary storage area; or, When the first electrode assembly in the first electrode assembly and the second electrode assembly picked up in pairs is in an unqualified state, the second electrode assembly is in a qualified state, and the first electrode assembly does not exist in the first qualified product temporary storage area, the unqualified first electrode assembly is sorted to the unqualified product recycling area, and the second electrode assembly is sorted to the second qualified product temporary storage area.

17. The battery processing equipment according to claim 15, characterized in that: The battery processing equipment is provided with a first qualified product temporary storage area corresponding to the first electrode assembly and a second qualified product temporary storage area corresponding to the second electrode assembly; The pairing includes, when the first electrode assembly and the second electrode assembly picked up in the pairing manner are in a qualified state, the second electrode assembly is in a non-qualified state, and the second electrode assembly exists in the second qualified product temporary storage area, sorting the second electrode assembly in the non-qualified state to the non-qualified product recovery area, and moving the second electrode assembly in the second qualified product temporary storage area back to the second pairing conveying line; or, When the first electrode assembly in the first electrode assembly and the second electrode assembly picked up in pairs is in an unqualified state, the second electrode assembly is in a qualified state, and the first electrode assembly exists in the first qualified product temporary storage area, the unqualified first electrode assembly is sorted to the unqualified product recovery area, and the first electrode assembly in the first qualified product temporary storage area is moved back to the first pairing conveyor line.

18. The battery processing equipment according to claim 15, characterized in that: The first pairing conveyor line and the second pairing conveyor line extend along a first horizontal direction and are arranged side by side along a second horizontal direction perpendicular to the first horizontal direction. The sorting mechanism includes a first sorting picking mechanism, a second sorting picking mechanism and a sorting driving mechanism. The sorting driving mechanism drives the first sorting picking mechanism and the second sorting picking mechanism along the second horizontal direction. The first sorting picking mechanism and the second sorting picking mechanism are configured to pick up the first electrode assembly and the second electrode assembly from the first pairing conveyor line and the second pairing conveyor line, respectively.

19. The battery processing equipment according to claim 18, characterized in that: The non-conforming product recovery area includes a first recovery area located on the side of the first pairing conveyor line away from the second pairing conveyor line and a second recovery area located between the first pairing conveyor line and the second pairing conveyor line. The sorting drive mechanism is configured to drive the second sorting and picking mechanism to place the second electrode assembly in a non-conforming state in the second recovery area, and to drive the first sorting and picking mechanism to place the first electrode assembly in a non-conforming state in the first recovery area. The sorting drive mechanism is also configured to drive the first sorting and picking mechanism to pick up the second electrode assembly from the second recovery area and place it in the first recovery area.

20. The battery processing equipment according to claim 19, characterized in that: The first recycling area includes a recycling conveyor belt for conveying the first electrode assembly and / or the second electrode assembly in an unqualified state.

21. The battery processing equipment according to claim 18, characterized in that: The first sorting and picking mechanism and / or the second sorting and picking mechanism respectively include a first sorting drive, a sorting bracket, a second sorting drive and two groups of sorting clamps, each group of the sorting clamps includes a sorting claw and a third sorting drive, the first sorting drive is configured to drive the sorting bracket to approach or move away from the first pairing conveyor line or the second pairing conveyor line, the second sorting drive and the two groups of sorting clamps are arranged on the sorting bracket, the second sorting drive is configured to change the spacing between the two groups of sorting clamps along the length direction or width direction of the first electrode assembly or the second electrode assembly, and the third sorting drive is configured to drive the sorting claw to clamp the first electrode assembly or the second electrode assembly along the thickness direction of the first electrode assembly or the second electrode assembly.

22. The battery processing equipment according to claim 13, characterized in that: The pole ear portion of the first electrode assembly is close to a side surface of the electrode body of the first electrode assembly facing the first paired conveying line, and the pole ear portion of the second electrode assembly is close to a side surface of the electrode body of the second electrode assembly facing the second paired conveying line, and the paired assembly further comprises a flipping mechanism, the flipping mechanism is configured to flip the first of the first electrode assembly and the second electrode assembly, and the stacking mechanism is configured to stack the electrode body of the second of the first electrode assembly and the second electrode assembly on the electrode body of the first of the first electrode assembly and the second electrode assembly; or, The pole ear portion of the first electrode assembly is close to a side surface of the electrode body of the first electrode assembly away from the first pairing conveying line, and the pole ear portion of the second electrode assembly is close to a side surface of the electrode body of the second electrode assembly away from the second pairing conveying line. The pairing assembly also includes a flipping mechanism, which is configured to flip the first electrode assembly and the second electrode assembly, and the stacking mechanism is configured to stack the flipped electrode body of the first of the first electrode assembly and the second electrode assembly on the electrode body of the second of the first electrode assembly and the second electrode assembly.

23. The battery processing equipment according to claim 22, characterized in that: The flipping mechanism includes a first flipping drive, a flipping bracket, a second flipping drive, a third flipping drive and a flipping clamp, each of the flipping clamps includes two flipping claws and a fourth flipping drive, the first flipping drive is configured to drive the flipping bracket to approach or move away from the first pairing conveyor line or the second pairing conveyor line, the second flipping drive, the third flipping drive and the flipping clamp are arranged on the flipping bracket, the second flipping drive is configured to change the spacing between the two flipping claws in the length direction or width direction of the first electrode assembly or the second electrode assembly, the fourth flipping drive is configured to drive the flipping claws to clamp the first electrode assembly or the second electrode assembly in the thickness direction of the first electrode assembly or the second electrode assembly, and the third flipping drive is configured to drive the flipping clamp to perform synchronous flipping relative to the flipping bracket.

24. The battery processing equipment according to claim 23, characterized in that: The flip bracket includes two cantilevers that are arranged side by side and at intervals, and a connecting arm connected between the two cantilevers. The flip fixture is rotatably supported on the free ends of the two cantilevers, respectively. The third flip driving component includes a rotating motor, a transmission shaft, and two synchronous belts. The transmission shaft is rotatably supported on the connecting arm along the spacing direction of the two cantilevers. The rotating motor drives the transmission shaft to rotate, and both ends of the transmission shaft are respectively connected to the corresponding flip fixtures through the synchronous belts.

25. The battery processing equipment according to claim 13, characterized in that: The stacking mechanism includes a first stacking drive, a second stacking drive, a stacking bracket, a third stacking drive and a stacking clamp, each of the stacking clamps includes two stacking jaws and a fourth stacking drive, the first stacking drive drives the stacking bracket in the spacing direction of the first pairing conveyor line and the second pairing conveyor line, the second stacking drive is configured to drive the stacking bracket to approach or move away from the first pairing conveyor line or the second pairing conveyor line, the third stacking drive and the stacking clamp are arranged on the stacking bracket, the third stacking drive is configured to change the spacing between the two stacking jaws in the length direction or width direction of the first electrode assembly or the second electrode assembly, and the fourth stacking drive is configured to drive the stacking jaws to clamp the first electrode assembly or the second electrode assembly in the thickness direction of the first electrode assembly or the second electrode assembly.

26. The battery processing equipment according to claim 1, characterized in that The welding assembly includes a welding conveyor line, a welding positioning jig and a welding mechanism. The welding positioning jig is used to clamp and fix the paired first electrode assembly and the second electrode assembly. The welding conveyor line sends the welding positioning jig into the welding mechanism. The welding mechanism welds the pole ear portion of the first electrode assembly and the pole ear portion of the second electrode assembly clamped by the welding positioning jig to each other.

27. The battery processing equipment according to claim 26, characterized in that: The pole ear portion includes a first pole ear portion and a second pole ear portion, the welding mechanism includes a first welding mechanism and a second welding mechanism, the welding conveyor line conveys the welding positioning jig through the first welding mechanism and the second welding mechanism in sequence, the first welding mechanism is used to weld the first pole ear portion of the first electrode assembly and the first pole ear portion of the second electrode assembly to each other, and the second welding mechanism is used to weld the second pole ear portion of the first electrode assembly and the second pole ear portion of the second electrode assembly to each other.

28. The battery processing equipment according to claim 1, characterized in that The battery processing equipment includes a coating equipment for an electrode assembly; the electrode assembly includes an electrode body, the electrode body has a first direction, a second direction and a third direction orthogonal to each other, and includes two main surfaces arranged opposite to each other along the first direction, two end surfaces arranged opposite to each other along the second direction, and two side surfaces arranged opposite to each other along the third direction, the coating equipment includes: A first positioning assembly, configured to position the electrode assembly so that the two main surfaces are at least partially exposed; A first covering component, configured to position the covering film, wherein the covering film includes two main covering areas spaced apart from each other and a connecting area connected between the two main covering areas; At least one of the first positioning assembly and the first covering assembly is configured to drive the electrode assembly and the covering film to perform relative movement so that the connecting area contacts and covers the first of the two end surfaces, and the two main covering areas respectively contact and cover the exposed portion of the corresponding one of the two main surfaces.

29. The battery processing equipment according to claim 28, characterized in that: The electrode assembly further comprises a pole ear portion protrudingly disposed on the first of the two end surfaces, an opening is disposed on the connection area, and the pole ear portion is disposed to pass through the opening as the electrode assembly and the coating film move relative to each other.

30. The battery processing equipment according to claim 28, characterized in that The covering film includes a side covering area connected to the main covering area, and the covering device also includes a second covering component, which is configured to drive the side covering area to contact and cover the side surface.

31. The battery processing equipment according to claim 30, characterized in that: The covering film includes an end covering area connected to the main covering area, and the second covering component is configured to drive the end covering area to contact and cover the second of the two end surfaces.

32. The battery processing equipment according to claim 28, characterized in that The coating film also includes a side coating area and an end coating area connected to the main coating area, wherein the side coating area is coated on the side surface, and the end coating area is coated on the second of the two end surfaces. The coating device also includes a first tape attaching component, which is used to drive the electrode assembly and the first tape to move relative to each other. The first tape includes a first part and a second part connected to each other. The first tape attaching component is arranged to attach the first part of the first tape to the side coating area and the second part of the first tape to the end coating area at a corner formed by the side surface and the second of the two end surfaces.

33. The battery processing equipment according to claim 32, characterized in that: The coating device also includes a second tape attaching assembly, which is used to drive the electrode assembly and the second tape to perform relative movement, the second tape includes a first part and a second part connected to each other, and the second tape attaching assembly is arranged to attach the first part of the second tape to the main coating area and the second part of the second tape to the side coating area at a corner formed by the side surface and the main surface.

34. The battery processing equipment according to claim 33, characterized in that: The number of the first parts of the second tape is two and they are located at both ends of the second part of the second tape. The second tape attaching assembly is configured to attach the two first parts of the second tape to corresponding ones of the two main covering areas respectively.

35. A battery processing method, characterized in that: The battery processing method comprises: Controlling the material conveying assembly to convey a first electrode assembly and a second electrode assembly, wherein the first electrode assembly and the second electrode assembly respectively include an electrode body and an electrode ear portion disposed on the electrode body; Controlling the pairing assembly to pair the first electrode assembly and the second electrode assembly so that the electrode body of the first electrode assembly and the electrode body of the second electrode assembly overlap each other; The welding assembly is controlled to weld the paired electrode lug portion of the first electrode assembly and the electrode lug portion of the second electrode assembly to each other.

36. The battery processing method according to claim 35, characterized in that: The controlling pairing component to pair the first electrode component and the second electrode component comprises: Controlling the pairing feeding mechanism to pick up the first electrode assembly and the second electrode assembly in pairs, and placing them on the first detection conveying line and the second detection conveying line respectively; Controlling the sorting mechanism to pair the first electrode assembly and the second electrode assembly in a qualified state; The stacking mechanism is controlled to stack the paired electrode body of the first electrode assembly and the electrode body of the second electrode assembly.

37. The battery processing method according to claim 36, characterized in that: The control sorting mechanism is configured to pair the first electrode assembly and the second electrode assembly in a qualified state, comprising: When the first electrode assembly and the second electrode assembly picked up in pairs are both in a qualified state, the first electrode assembly and the second electrode assembly picked up in pairs are used as the paired first electrode assembly and the second electrode assembly.

38. The battery processing method according to claim 37, characterized in that: The battery processing equipment is provided with a non-conforming product recovery area; The control sorting mechanism is configured to pair the first electrode assembly and the second electrode assembly in a qualified state, comprising: When at least one of the first electrode assembly and the second electrode assembly picked up in pairs is in a non-conforming state, the first electrode assembly and / or the second electrode assembly in the non-conforming state are sorted to the non-conforming product recycling area.

39. The battery processing method according to claim 38, characterized in that: The battery processing equipment is provided with a first qualified product temporary storage area corresponding to the first electrode assembly and a second qualified product temporary storage area corresponding to the second electrode assembly, The control sorting mechanism is configured to pair the first electrode assembly and the second electrode assembly in a qualified state, comprising: When the first electrode assembly and the second electrode assembly picked up in pairs are in a qualified state, and the second electrode assembly is in a non-qualified state, and the second electrode assembly does not exist in the second qualified product temporary storage area, the first electrode assembly is sorted to the first qualified product temporary storage area, and the non-qualified second electrode assembly is sorted to the non-qualified product recycling area; or, When the first electrode assembly in the first electrode assembly and the second electrode assembly picked up in pairs is in an unqualified state, the second electrode assembly is in a qualified state, and the first electrode assembly does not exist in the first qualified product temporary storage area, the unqualified first electrode assembly is sorted to the unqualified product recovery area, and the second electrode assembly is sorted to the second qualified product temporary storage area.

40. The battery processing method according to claim 38, characterized in that: The battery processing equipment is provided with a first qualified product temporary storage area corresponding to the first electrode assembly and a second qualified product temporary storage area corresponding to the second electrode assembly; The control sorting mechanism is configured to pair the first electrode assembly and the second electrode assembly in a qualified state, comprising: When the first electrode assembly in the first electrode assembly and the second electrode assembly picked up in the pair mode is in a qualified state, and the second electrode assembly is in a non-qualified state, and the second electrode assembly exists in the second qualified product temporary storage area, the non-qualified second electrode assembly is sorted to the non-qualified product recovery area, and the second electrode assembly in the second qualified product temporary storage area is moved back to the second pairing conveyor line; or, When the first electrode assembly in the first electrode assembly and the second electrode assembly picked up in the pair mode is in a non-qualified state, and the second electrode assembly is in a qualified state, and the first electrode assembly exists in the first qualified product temporary storage area, the non-qualified first electrode assembly is sorted to the non-qualified product recycling area, And the first electrode assembly in the first qualified product temporary storage area is moved back to the first pairing conveying line.

41. The battery processing method according to any one of claims 35 to 40, characterized in that: The controlling welding assembly to weld the paired pole ear portion of the first electrode assembly and the pole ear portion of the second electrode assembly to each other comprises: Controlling the jig adjustment mechanism to adjust the welding positioning jig to clamp and fix the paired first electrode assembly and the second electrode assembly; Controlling the welding conveyor line to deliver the welding positioning jig into the welding mechanism; The welding mechanism is controlled to weld the pole ear portion of the first electrode assembly and the pole ear portion of the second electrode assembly clamped by the welding positioning jig.

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