Control method of coating device, and coating device

Abstract

The application discloses a control method of a coating device and the coating device. The control method comprises: controlling a positioning apparatus to perform initial positioning on a piece to be coated, wherein the piece to be coated has a first direction and a second direction and comprises two main faces and two end faces. Controlling two coating apparatuses to perform initial positioning on a coating film, wherein the coating film comprises a connecting area and two main coating areas, the two main coating areas are spaced apart in a first direction, and the connecting area is connected between the two main coating areas and is opposite to the first of the two end faces in a second direction. The two coating apparatuses respectively fix the corresponding main coating areas and each comprises a transmission mechanism used for transmitting the main coating area. Using a virtual axis for controlling the corresponding transmission mechanisms in the two coating apparatuses to synchronously move, so that the connecting area covers the first of the two end faces, and the two main coating areas respectively coat the corresponding one of the two main surfaces. The described solution can improve the reliability and precision of the coating action of the coating device.

Description

Control method of coating equipment and coating equipment

[0001] This application claims priority to Chinese patent application No. 2024103826252, filed on March 29, 2024, entitled “Control method for coating equipment and coating equipment”, which is incorporated herein by reference in its entirety.

Technical field

[0002] The present application relates to the technical field of battery assembly, and in particular to a control method for a coating device and a coating device. [Background Technology]

[0003] 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.

[0004] Batteries often feature an electrode assembly and a coating film. The coating film acts as an insulator and is used to coat the electrode assembly. During battery production, coating equipment is required to apply the coating film to the electrode assembly. However, existing coating equipment has low precision and is unable to meet the coating requirements for electrode assemblies.

[0005] [Summary of the invention]

[0006] In view of the above problems, the present application provides a control method for a covering device and a covering device, which can improve the reliability and accuracy of the covering action of the covering device.

[0007] In a first aspect, the present application provides a control method for a coating device, the control method comprising: controlling a positioning device to initially position a part to be coated, wherein the part to be coated has a first direction and a second direction orthogonal to each other, and includes two main surfaces arranged opposite to each other along the first direction and two end surfaces arranged opposite to each other along the second direction. Controlling two coating devices to initially position a coating film, wherein the coating film includes a connecting area and two main coating areas, the two main coating areas are spaced apart from each other along the first direction, the connecting area is connected between the two main coating areas and is arranged opposite to the first of the two end surfaces along the second direction. The two coating devices respectively fix the corresponding main coating areas, and respectively include a transmission mechanism for transmitting the main coating areas. Using a virtual axis to control the corresponding transmission mechanisms in the two coating devices to move synchronously, so that the connecting area covers the first of the two end surfaces, and the two main coating areas respectively cover the corresponding one of the two main surfaces.

[0008] This approach facilitates high-precision synchronous motion of the corresponding transmission mechanisms in the two coating devices, ensuring high consistency in the motion trajectories of the two main coating zones. This also improves the reliability and precision of the coating operation, thereby enhancing the coating effect and smoothness of the coating process. Furthermore, a single virtual axis can be used to control at least two real axes. This reduces the total number of axes required for the coating system, shortening commissioning time and improving R&D and production efficiency.

[0009] In some embodiments, the transmission mechanism includes a first transmission mechanism for driving the primary coating region to move in a first direction, and the virtual axis includes a first virtual axis. Using the virtual axis to control the synchronous movement of corresponding transmission mechanisms in the two coating devices includes: using the first virtual axis to control the first transmission mechanisms of the two coating devices to drive the corresponding primary coating regions to move synchronously in a second direction toward the object to be coated.

[0010] In the above manner, by utilizing the first virtual axis to control the first transmission mechanisms of the two covering devices, the consistency and movement accuracy of the two main covering areas in the second direction can be improved.

[0011] In some embodiments, the transmission mechanism includes a second transmission mechanism for cooperating with the primary coating region to flip, and the virtual axis includes a second virtual axis. Using the virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two coating devices includes: using the second virtual axis to control the second transmission mechanisms of the two coating devices to synchronously flip toward the corresponding primary surface in coordination with the corresponding primary coating region.

[0012] The above-mentioned method is helpful to improve the completion, consistency and movement accuracy of the flipping movement of the two main covering areas.

[0013] In some embodiments, the transmission mechanism includes a third transmission mechanism for driving the primary enveloping regions to move in the second direction, and the virtual axis includes a third virtual axis. Using the virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two enveloping devices includes: using the third virtual axis to control the third transmission mechanisms of the two enveloping devices to drive the corresponding primary enveloping regions to synchronously move toward each other in the first direction.

[0014] Through the above method, the two main covering areas can gradually approach the corresponding main surface along the first direction until they are attached to the corresponding main surface. By using the third virtual axis to control the third transmission mechanism of the two covering devices, it is beneficial to improve the consistency and movement accuracy of the flipping movement of the two main covering areas.

[0015] In some embodiments, control processes of at least two of the first virtual axis, the second virtual axis, and the third virtual axis are performed synchronously.

[0016] Through the above method, at least two of the first transmission mechanism, the second transmission mechanism and the third transmission mechanism can cooperate with each other, which is beneficial to simplifying the movement trajectory of the main covering area, shortening the movement time of the main covering area, and making the movement of the main covering area covering the main surface smoother and simpler, and the covering efficiency is higher.

[0017] In some embodiments, synchronizing the control processes of at least two of the first virtual axis, the second virtual axis, and the third virtual axis includes: in a first stage, setting the control processes of the first virtual axis and the second virtual axis to be synchronized. In a second stage, setting the control processes of the second virtual axis and the third virtual axis to be synchronized. In a third stage, setting the control processes of the first virtual axis, the second virtual axis, and the third virtual axis to be synchronized.

[0018] In the above manner, the process of the two main covering areas respectively covering the two main surfaces can be divided into the first stage, the second stage and the third stage, which is conducive to the smooth and efficient covering of the covering film on the workpiece to be covered.

[0019] In some embodiments, in the first phase, setting the control process of the first virtual axis and the second virtual axis to be synchronous includes: in the first phase, the third virtual axis is not running. In the second phase, setting the control process of the second virtual axis and the third virtual axis to be synchronous includes: in the second phase, the first virtual axis is not running.

[0020] Through the above method, the main coating area can move along the second direction when the connecting area is blocked by the first of the two end faces in the first stage, thereby causing the coating film to be tightened, which can enhance the adhesion tightness of the connecting area on the first of the two end faces, and can also reduce the total number of axes controlled by the controller in the second stage, which is beneficial to reducing the debugging time of the coating equipment.

[0021] In some embodiments, the control method further includes: in the second stage and the third stage, controlling the positioning device to drive the to-be-covered member to move along the second direction toward the connection area.

[0022] By adopting the above-mentioned method, the part to be coated can be moved closer to the next workstation while the main surface is being coated by the coating film, thereby improving the working efficiency of the coating equipment.

[0023] In some embodiments, controlling the two covering devices to initially position the covering film includes: using the two covering devices to initially position the covering film so that the connection area and the two main covering areas are coplanar with each other.

[0024] By the above method, the connection area can be easily contacted with the first of the two end surfaces during the coating process, so that there is a sufficient distance between the coating device and the connection area, reducing the interference of the coating device on the process of the connection area coating the first of the two end surfaces.

[0025] In some embodiments, controlling the two covering devices to initially position the covering film includes: using the two covering devices to initially position the covering film so that the connection region contacts the first of the two end surfaces. Alternatively, controlling the positioning device to initially position the object to be covered includes: using the positioning device to initially position the object to be covered so that the connection region contacts the first of the two end surfaces.

[0026] Through the above method, the connecting area can first contact the first of the two end surfaces before the main covering area covers the main surface. During the process of the main covering area covering the main surface, the first of the two end surfaces can support the connecting area, so that the first of the two end surfaces can be used as a fulcrum when the main covering area is flipped, which is beneficial to improving the stability of the main covering area flipping process.

[0027] In some embodiments, the control method further includes: decoupling the virtual axis from the transmission mechanisms of the two covering devices, and controlling the transmission mechanisms of the two covering devices to reset.

[0028] Through the above method, each transmission mechanism can be quickly reset.

[0029] In a second aspect, the present application provides a coating device, which is used to control a coating film to coat a part to be coated, wherein the part to be coated has a first direction and a second direction orthogonal to each other, and includes two main surfaces arranged opposite to each other along the first direction and two end surfaces arranged opposite to each other along the second direction. The coating film includes a connection area and two main coating areas, the two main coating areas are arranged spaced apart from each other along the first direction, and the connection area is connected between the two main coating areas. The coating device includes: a positioning device, two coating devices and a controller. The positioning device is used to initially position the part to be coated and to keep the two main surfaces at least partially exposed. The two coating devices are used to initially position the coating film so that the connection area is arranged opposite to the first of the two end surfaces along the second direction. The two coating devices respectively fix the corresponding main coating areas and respectively include a transmission mechanism for transmitting the main coating areas. The controller is used to execute program data during operation to complete the control method of the above-mentioned coating device.

[0030] 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

[0031] 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:

[0032] FIG1 is a schematic structural diagram of a vehicle to which an electrode assembly according to one or more embodiments is applied;

[0033] 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;

[0034] 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;

[0035] FIG4 is a schematic diagram of a partial structure of an electrode assembly according to one or more embodiments;

[0036] 5 is a schematic structural diagram of a positioning device and a coating device for transmitting a coating film and an electrode assembly according to one or more embodiments;

[0037] 6 is a simplified schematic diagram of the structure of a positioning device and a coating device for transmitting a coating film and an electrode assembly according to one or more embodiments;

[0038] FIG7 is a schematic diagram of a process of coating an electrode assembly with a coating film according to one or more embodiments;

[0039] FIG8 is a schematic structural diagram of a positioning device according to one or more embodiments;

[0040] FIG9 is a schematic diagram of a partial structure of a coating device according to one or more embodiments;

[0041] FIG10 is a schematic structural diagram of a fixture device for positioning an electrode assembly according to one or more embodiments;

[0042] FIG11 is a bottom view of a fixture device according to one or more embodiments;

[0043] FIG12 is a schematic diagram of the structure of a side-wrapping device transmitting a coating film and an electrode assembly according to one or more embodiments;

[0044] FIG13 is a schematic structural diagram of a side bag device according to one or more embodiments;

[0045] FIG14 is a schematic structural diagram of part A shown in FIG12;

[0046] FIG15 is a schematic structural diagram of the coating film and electrode assembly shown in FIG12;

[0047] FIG16 is a simplified schematic diagram of the structure of a coating device according to one or more embodiments;

[0048] FIG17 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;

[0049] FIG18 is a schematic structural diagram of an electrode assembly according to one or more embodiments;

[0050] FIG19 is a flow chart of a method for controlling a coating device according to one or more embodiments;

[0051] FIG20 is a schematic diagram of the relative positions of the electrode assembly and the covering film during initial positioning according to one or more embodiments;

[0052] FIG. 21 is a schematic diagram illustrating a motion trajectory of a film positioning portion according to one or more embodiments.

[0053] 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 open end; 120 end cap; 200 electrode assembly; 201 electrode lug; 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 module; 221 positive electrode sheet; 222 separator; 223 negative electrode sheet; 230 fixing member; 300 coating device; 301 coating film loading mechanism; 302 electrode assembly unloading mechanism; 303 jig conveyor line; 304 robot track; 305 dust removal mechanism; 310 Positioning device; 311 Positioning fixture; 312 Fourth transmission mechanism; 313 Electrode clamping cylinder; 3131 Electrode clamping jaw; 314 Electrode transmission motor; 3141 First electrode support; 3142 Second electrode support; 330 Coating device; 331 First sub-coating assembly; 332 Membrane positioning portion; 333 First transmission mechanism; 334 Second transmission mechanism; 335 Third 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 Fixture device; 351 Fixed support; 353 Limiting member; 354 ​​Limiting gap; 355 Elastic member; 356 Hook plate; 357 Rotating member; 370 Side wrapping device; 371 Side pressure plate; 372 First pressure plate transmission mechanism; 373 Second pressure plate transmission mechanism; 374 End pressure plate; 3741 End limit block; 3711 Side limit 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 tape attachment assembly; 390 Second tape attachment assembly; 400 Covering film; 410 Main covering area; 420 Connecting area; 421 Opening; 430 Side covering area; 440 End covering area; 511 First portion of the first tape; 512 Second portion of the first tape; 510 First tape; 521 First portion of the second tape; 522 Second portion of the second tape; 520 Second tape; D1 First direction; D2 Second direction; D3 Third direction. [Specific implementation method]

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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 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.

[0059] 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).

[0060] 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.

[0061] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0062] 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.

[0063] Batteries often feature an electrode assembly and a coating film. The coating film acts as an insulator and is used to coat the electrode assembly. During battery production, coating equipment is required to apply the coating film to the electrode assembly. However, existing coating equipment has low precision and is unable to meet the coating requirements for electrode assemblies.

[0064] In order to meet the coating requirements for continuous coating of multiple surfaces of the electrode assembly, the positioning device is configured to position the electrode assembly so that the position and posture of the electrode assembly can be kept stable and controlled. The coating device is configured to position the coating film so that the position and posture of the two main coating areas and the connecting area can be kept stable and controlled. The positioning device and the coating device are configured to drive the electrode assembly and the coating film to perform relative motion, which can adjust the relative position relationship between the two main surfaces and the two coating areas, thereby achieving coating of the two main surfaces of the electrode assembly. By introducing a virtual axis, it is convenient to achieve high-precision synchronous movement of the corresponding transmission mechanisms in the two coating devices, so that the motion trajectories of the two main coating areas are highly consistent, and at the same time, it can improve the reliability and accuracy of the coating action of the coating equipment, thereby improving the coating effect and the smoothness of the coating process.

[0065] Based on the above considerations, the present application provides a control method for a coating device and a coating device. The control method includes: controlling a positioning device to initially position the part to be coated, wherein the part to be coated has a first direction and a second direction orthogonal to each other, and includes two main surfaces arranged opposite to each other along the first direction and two end surfaces arranged opposite to each other along the second direction. Controlling two coating devices to initially position the coating film, wherein the coating film includes a connecting area and two main coating areas, the two main coating areas are spaced apart from each other along the first direction, and the connecting area is connected between the two main coating areas and is arranged opposite to the first of the two end surfaces along the second direction. The two coating devices respectively fix the corresponding main coating areas, and respectively include a transmission mechanism for transmitting the main coating areas. A virtual axis is used to control the synchronous movement of the corresponding transmission mechanisms in the two wrapping devices, thereby causing the connecting area to wrap around the first of the two end surfaces, and the two main wrapping areas to wrap around the corresponding one of the two main surfaces. The introduction of the virtual axis facilitates the high-precision synchronous movement of the corresponding transmission mechanisms in the two wrapping devices, ensuring high consistency in the motion trajectories of the two main wrapping areas. This also improves the reliability and accuracy of the wrapping action of the wrapping equipment, thereby enhancing the wrapping effect and the smoothness of the wrapping process. In addition, a virtual axis can be used to control at least two real axes. By introducing a virtual axis, the total number of axes that need to be controlled by the wrapping equipment can be reduced, which can reduce the debugging time of the wrapping equipment and improve R&D and production efficiency.

[0066] The control method of the coating device and the coating device disclosed in the embodiments of the present application are used to coat the part to be coated with a coating film. The part to be coated can be an electrode assembly. The electrode assembly and the coating film are arranged on a battery. The battery can be applied to 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, an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] In some embodiments, the battery 100a may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0071] 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.

[0072] 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.

[0073] The battery cell 1 includes 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 storage battery, etc. The battery cell 1 can be cylindrical, flat, rectangular, or in other shapes.

[0074] 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.

[0075] 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 .

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] Optionally, the battery cell 1 includes a housing 100, a bottom cover, and an electrode assembly 200. The housing 100 has an open end 112. A terminal post is disposed on the wall of the housing 100 opposite the open end 112. The terminal post has a through-hole. The housing and bottom cover are connected to form a receiving cavity that communicates with the through-hole. The active material coating portion of the electrode assembly 200 is disposed within the housing 100. The tab portion 201 of the electrode assembly 200 passes through the through-hole and connects to the side of the terminal post facing away from the receiving cavity.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.).

[0089] 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 / 3O2 (also referred to as NCM 333 ), LiNi 0.5 Co 0.2 Mn 0.3 O2 (also referred to as NCM 523 ), LiNi 0.5 Co 0.25 Mn 0.25 O2 (also referred to as NCM211), 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.

[0090] 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.

[0091] 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.).

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] In some embodiments, the electrode assembly 200 further includes a separator disposed between the positive electrode and the negative electrode.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] The electrolyte may be a form of electrolyte and may include an electrolyte salt and a solvent.

[0102] 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.

[0103] 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.

[0104] Among them, the gel electrolyte includes a skeleton network with a polymer as the electrolyte, combined with an ionic liquid-lithium salt.

[0105] Among them, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0106] 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.

[0107] 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.

[0108] As an example, a composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.

[0109] 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.

[0110] 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.

[0111] According to some embodiments of the present application, as shown in Figures 5 to 7, the coating device 300 described in the coating device embodiment of the present application is used to control the coating film 400 to coat the part to be coated, and the part to be coated has a first direction D1 and a second direction D2 that are orthogonal to each other, and includes two main surfaces 211 arranged opposite to each other along the first direction D1 and two end surfaces 212 arranged opposite to each other along the second direction D2. The coating film 400 includes a connecting area 420 and two main coating areas 410, and the two main coating areas 410 are arranged at intervals from each other along the first direction D1, and the connecting area 420 is connected between the two main coating areas 410. The coating device 300 includes a positioning device 310, two coating devices 330 and a controller. The positioning device 310 is used to initially position the part to be coated and to keep the two main surfaces 211 at least partially exposed. The two coating devices 330 are used to initially position the coating film 400, such that the connection region 420 is disposed opposite the first 212a of the two end surfaces 212 along the second direction D2. The two coating devices 330 respectively secure the corresponding primary coating region 410 and each include a transmission mechanism for transmitting the primary coating region 410. The controller is used to execute program data during operation to implement the control method of the coating apparatus 300 described below.

[0112] According to some embodiments of the present application, optionally, as shown in Figures 5 to 7, the part to be coated is an electrode assembly 200. The electrode assembly 200 includes an electrode body 210, the 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 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 equipment 300 includes a positioning device 310 and a coating device 330. The positioning device 310 is configured to position the electrode assembly 200 and to keep the two main surfaces 211 at least partially exposed. The coating device 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 positioning device 310 and the covering device 330 is configured to be movable relative to the 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.

[0113] 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 covering device 330 can be configured to drive the two main covering regions 410 to move respectively relative to the connection region 420.

[0114] The positioning device 310 and the coating device 330 can drive the electrode assembly 200 and the coating film 400 to perform relative movement. When the positioning device 310 positions the electrode assembly 200, the positioning device 310 can act on the electrode assembly 200 at the second of the two main surfaces 211, the two side surfaces 213, or the two end surfaces 212. When the positioning device 310 acts on the electrode assembly 200 at the two main surfaces 211, the two main surfaces 211 are partially exposed. When the positioning device 310 acts on the electrode assembly 200 at the second of the two side surfaces 213 or the two end surfaces 212b, the two main surfaces 211 can be fully exposed.

[0115] By setting up the positioning device 310 and the coating device 330, the relative position relationship between the two main surfaces 211 and the two coating areas can be adjusted, 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 coating film 400 coats 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 coating process can be improved, making the coating action more simple and smooth.

[0116] According to some embodiments of the present application, optionally, as shown in Figures 5 to 7, the relative movement between the positioning device 310 and the covering device 330 is configured so that the contact time of the connection area 420 with the first one 212a of the two end surfaces 212 is earlier than the contact time of the two main covering areas 410 with the corresponding one of the two main surfaces 211.

[0117] 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.

[0118] According to some embodiments of the present application, optionally, as shown in Figures 5 to 7, before the first one 212a of the two end surfaces 212 contacts the connection area 420, the covering device 330 is configured to make the connection area 420 and the two main covering areas 410 coplanar with each other.

[0119] By arranging the connecting region 420 and the two main covering regions 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 covering device 330 stretches the covering films 400 by pulling them, thereby making the connecting region 420 and the two main covering regions 410 coplanar with each other.

[0120] According to some embodiments of the present application, optionally, as shown in Figures 5 to 7, the covering device 330 is configured to make the connection area 420 in a suspended state, and the relative movement between the positioning device 310 and the covering device 330 is configured to make the first 212a of the two end faces 212 contact the connection area 420 in the suspended state.

[0121] 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.

[0122] According to some embodiments of the present application, optionally, as shown in Figures 5 to 7, 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 positioning device 310 and the covering device 330 move relative to each other.

[0123] The relative movement of the positioning device 310 and the coating device 330 allows for relative movement between the electrode assembly 200 and the coating film 400. The presence of the electrode ear 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 electrode ear 201 to be avoided, reducing interference with the coating process caused by the electrode ear 201, thereby improving the coating effectiveness of the coating film 400 on the first 212a of the two end surfaces 212.

[0124] 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.

[0125] 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.

[0126] According to some embodiments of the present application, optionally, as shown in Figures 5 to 7, at least one of the positioning device 310 and the covering device 330 is configured to move along the second direction D2, so that the electrode assembly 200 and the covering film 400 approach each other along the second direction D2, and after the first 212a of the two end surfaces 212 contacts the connection area 420, the 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 covering device 330 is also configured to move along the first direction D1, so that the ends of the two main covering areas 410 approach each other along the first direction D1, thereby making the two main covering areas 410 contact and cover the exposed portion of the corresponding one of the two main surfaces 211.

[0127] Specifically, the positioning device 310 can drive the electrode assembly 200 along the second direction D2 to approach the covering film 400, or the covering device 330 can drive the covering film 400 along the second direction D2 to approach the electrode assembly 200, or the positioning device 310 drives the electrode assembly 200 along the second direction D2 to approach the covering film 400 while the covering device 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 212a of the two end surfaces 212 contacts the connection area 420 and is covered.

[0128] 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 covering device 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.

[0129] 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.

[0130] According to some embodiments of the present application, optionally, as shown in Figures 5, 6 and 8, the positioning device 310 includes a positioning fixture 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.

[0131] When the positioning fixture 311 clamps the fixed electrode body 210, the positioning fixture 311 and the electrode body 210 can remain relatively fixed. By setting the positioning fixture 311 to clamp the fixed electrode body 210, the positioning device 310 can position the electrode assembly 200. By setting the positioning fixture 311 to clamp the fixed electrode body 210 from the outside of the two side surfaces 213 along the third direction D3, the positioning 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 positioning 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 positioning fixture 311 in clamping the fixed electrode body 210.

[0132] Furthermore, the electrode body 210 includes two electrode modules 220 described below. By setting the positioning 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 keep the two electrode modules 220 relatively fixed, thereby improving the stability of the positioning fixture 311 in clamping the fixed electrode body 210.

[0133] Optionally, as shown in FIG. 5 and FIG. 8 , the positioning fixture 311 is in transmission connection with the electrode clamping cylinder 313 , and the electrode clamping cylinder 313 can control the positioning fixture 311 to clamp or release the electrode body 210 .

[0134] According to some embodiments of the present application, optionally, as shown in Figures 5 to 7, the positioning device 310 includes a fourth transmission mechanism 312, and the fourth transmission mechanism 312 is configured to transmit the positioning fixture 311 to move along the second direction D2 toward the side where the coating film 400 is located, so that after the first one 212a of the two end surfaces 212 contacts the connection area 420, the first one 212a of the two end surfaces 212 and the connection area 420 continue to move synchronously along the second direction D2.

[0135] 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.

[0136] Furthermore, the fourth transmission mechanism 312 may be in transmission connection with the positioning fixture 311. The fourth transmission mechanism 312 may drive the electrode assembly 200 to move along the second direction D2 by driving the positioning fixture 311 to move along the second direction D2.

[0137] Optionally, the fourth transmission mechanism 312 includes an electrode drive motor 314, a lead screw, and a slider. The electrode drive motor 314 drives the lead screw. The slider is sleeved around the lead screw and threadedly engaged with the lead screw. The slider is fixed relative to the electrode assembly 200, with the lead screw's rotation axis parallel to the second direction D2. When the electrode drive motor 314 drives the lead screw, it drives the slider along the lead screw's rotation axis, thereby driving the electrode assembly 200 to move in the second direction D2.

[0138] According to some embodiments of the present application, optionally, as shown in Figures 5 and 8, the fourth transmission mechanism 312 includes an electrode transmission motor 314, a first electrode support 3141, and a second electrode support 3142. The electrode transmission motor 314 is disposed on the first electrode support 3141, and the electrode transmission motor 314 is configured to drive the second electrode support 3142 to move relative to the first electrode support 3141 along the second direction D2. The positioning fixture 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.

[0139] 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.

[0140] In some embodiments, the covering device 330 includes a support frame, a support transmission mechanism, and two spaced support plates. The support transmission mechanism and the two support plates are disposed on the support frame, with one end of each support plate being rotatably connected to the support frame. The support transmission mechanism is used to drive the two support plates to rotate relative to the support frame, so that the two support plates can switch between a flat state and an opposed state. The two support plates each have a support plane. In the flat state, the two support planes face the same direction and are coplanar. The two support planes are used to support a main covering area 410, respectively, so that the connection area 420 and the two main covering areas 410 are coplanar with each other. The two support plates are spaced apart so that the connection area 420 is suspended. In the opposed state, the two support planes are spaced and opposite to each other, so that the two main covering areas 410 supported by the two support planes are bent relative to the connection area 420. In this way, the two support plates switch from the flat state to the opposed state, enabling the two main covering areas 410 to cover the two main surfaces 211.

[0141] Optionally, the two support plates each have an adsorption structure, and the adsorption structure is used to keep the main covering area 410 relatively fixed to the support plate by adsorbing the main covering area 410 .

[0142] According to some embodiments of the present application, optionally, as shown in Figures 5 to 7, the two wrapping devices 330 each include a film positioning portion 332 and a first transmission mechanism 333. The two film positioning portions 332 respectively clamp and secure the ends of the wrapping film 400 away from the connection region 420. The first transmission mechanism 333 drives the two film positioning portions 332 toward each other along a first direction D1, so that the area of ​​the main wrapping region 410 not clamped by the film positioning portions 332 can be bent relative to the connection region 420 toward the corresponding main surface 211. For example, the film positioning portion 332 is a film clamp.

[0143] 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 positioning portions 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 positioning portions 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.

[0144] When the first transmission mechanism 333 drives the two film positioning portions 332 toward each other along the first direction D1, the two film positioning portions 332 can drive the ends of the covering film 400 away from the connection region 420 toward each other, thereby driving the two main covering regions 410 toward their corresponding main surfaces 211. When the main covering regions 410 move toward their corresponding main surfaces 211, the areas of the main covering regions 410 not clamped by the film positioning portions 332 can bend relative to the connection region 420.

[0145] In the first direction D1, the forces exerted by the two membrane positioning portions 332 on the connecting area 420 through the two main covering areas 410 can offset each other, so that the connecting 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 connecting area 420 is supported by the electrode body 210, so that the connecting area 420 can serve as a fulcrum for bending the area of ​​the main covering area 410 that is not clamped by the membrane positioning portion 332.

[0146] By setting the two membrane positioning parts 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 that is not clamped by the membrane positioning parts 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.

[0147] Optionally, as shown in FIG. 5 , FIG. 6 and FIG. 9 , the film positioning portion 332 is in transmission connection with a film clamping cylinder 336 , and the film clamping cylinder 336 can control the film positioning portion 332 to clamp or release the covering film 400 .

[0148] Optionally, as shown in Figures 5, 6, and 9, the first transmission mechanism 333 includes a first film transmission motor 337. The two first film transmission motors 337 are used to drive the two film positioning parts 332 closer to each other along the first direction D1. Specifically, the first 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 positioning part 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 positioning part 332 to move along the first direction D1.

[0149] Optionally, as shown in FIG5 , FIG6 and FIG9 , each film positioning portion 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 .

[0150] According to some embodiments of the present application, optionally, as shown in Figures 5, 6, and 9, the first 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 positioning portion 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.

[0151] 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.

[0152] According to some embodiments of the present application, optionally, as shown in Figures 5, 6 and 9, each coating device 330 further includes a second transmission mechanism 334, and the two second transmission mechanisms 334 respectively drive the corresponding film positioning parts 332 to rotate, so that the movement trend of the area of ​​the coating film 400 clamped by the film positioning part 332 relative to the connecting area 420 is consistent with the bending trend of the non-clamped area of ​​the main coating area 410 relative to the connecting area 420.

[0153] The unclamped area of ​​the main covering region 410 is bent relative to the connecting region 420 to form a covering around the main surface 211. After the unclamped area of ​​the main covering region 410 covers the main surface 211, the film positioning portion 332 can release its grip on the covering film 400. The area of ​​the covering film 400 clamped by the film positioning portion 332 also needs to be covered on the electrode body 210. By arranging the movement trend of the area of ​​the covering film 400 clamped by the film positioning portion 332 relative to the connecting region 420 to be consistent with the bending trend of the unclamped area of ​​the main covering region 410 relative to the connecting region 420, the area of ​​the covering film 400 clamped by the film positioning portion 332 can be brought closer to the electrode body 210, facilitating the covering of the area of ​​the covering film 400 clamped by the film positioning portion 332 on the electrode body 210.

[0154] In addition, after the membrane positioning portion 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 positioning portion 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 positioning portion 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.

[0155] Optionally, as shown in Figures 5, 6, and 9, the second transmission mechanism 334 includes a fourth membrane support 339 and a second membrane transmission motor 340. The fourth membrane support 339 is provided with a membrane positioning portion 332. The second membrane transmission 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.

[0156] According to some embodiments of the present application, optionally, as shown in Figures 5, 6, and 9, the first 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 transmission mechanism 334 includes a second film transmission motor 340, which is disposed on the second film support 342 and drives the film positioning portion 332 to rotate. The film positioning portion 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.

[0157] Such an arrangement can improve the movement freedom of the coating film 400 and enhance the coating effect.

[0158] According to some embodiments of the present application, optionally, as shown in Figures 5, 6, and 9, each coating device 330 further includes a third transmission mechanism 335. The two third transmission mechanisms 335 respectively drive the corresponding film positioning portion 332 to move along the second direction D2 toward the side where the electrode body 210 is located.

[0159] When the membrane positioning portion 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 covering membrane 400. With this arrangement, by driving the membrane positioning portion 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 region 420, and the main covering region 410 can be driven to move along the second direction D2 toward the side where the electrode body 210 is located. This allows the projections of the two main covering regions 410 along the first direction D1 onto the corresponding main surfaces 211 to gradually cover the exposed portions of the main surfaces 211, thereby facilitating the covering of the main surfaces 211 by the main covering regions 410.

[0160] Optionally, as shown in Figures 5, 6 and 9, the positioning device 310 includes a positioning clamp 311 and a fourth transmission mechanism 312, the positioning clamp 311 is configured to clamp and fix the electrode body 210, the fourth 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, so that 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 continue to move synchronously along the second direction D2, and the third transmission mechanism 335 drives the corresponding membrane positioning portion 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.

[0161] The direction in which the film positioning portion 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 the coating film 400 and the electrode assembly 200 being moved synchronously to the new station, the displacement stroke of the film positioning portion 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. This causes relative displacement between the coating film 400 and the electrode assembly 200, thereby enabling the first 212a of the two end surfaces 212 to contact the connection area 420 and driving the main coating area 410 to move along the second direction D2 toward the side where the electrode body 210 is located. This allows the projections of the two main coating areas 410 along the first direction D1 on the corresponding main surfaces 211 to gradually cover the exposed portions of the main surfaces 211, thereby facilitating the main coating areas 410 covering the main surfaces 211.

[0162] Optionally, as shown in Figures 5, 6, and 9, the third transmission mechanism 335 is provided with a third film transmission motor 341, which is used to drive the film positioning portion 332 to move along the second direction D2. Specifically, the third 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 positioning portion 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 positioning portion 332 to move along the second direction D2.

[0163] Optionally, as shown in Figures 5, 6, and 9, the coating device 330 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 transmission mechanism 334 and the membrane positioning portion 332 are disposed on the third membrane support 343. The third transmission mechanism 335 is in transmission connection with the third membrane support 343. The third transmission mechanism 335 can drive the third membrane support 343 to move in the second direction D2, thereby driving the second transmission mechanism 334 and the membrane positioning portion 332 to move in the second direction D2 via the third membrane support 343. The third transmission mechanism 335 is arranged on the second membrane support 342, and the first transmission mechanism 333 is connected to the second membrane support 342. The first transmission mechanism 333 can drive the second membrane support 342 to move along the first direction D1, thereby driving the third transmission mechanism 335, the third membrane support 343, the second transmission mechanism 334 and the membrane positioning part 332 to move along the first direction D1 through the second membrane support 342.

[0164] According to some embodiments of the present application, optionally, as shown in Figures 5, 6, and 9, the first 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 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 transmission mechanism 334 includes a second film transmission motor 340, which is arranged on the third film support 343 and drives the film positioning part 332 to rotate. The film positioning part 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.

[0165] Such an arrangement can further improve the movement freedom of the coating film 400 and enhance the coating effect.

[0166] According to some embodiments of the present application, optionally, as shown in Figures 5, 10 and 11, the coating equipment 300 also includes a fixture device 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.

[0167] After the two main coating regions 410 cover the two main surfaces 211 of the electrode body 210, the jig 350 can be used to clamp and secure the coating film 400 and the electrode body 210. The jig 350 can prevent the main coating regions 410 from separating from the main surfaces 211 of the electrode body 210, thereby improving the stability of the main coating regions 410 covering the main surfaces 211 of the electrode body 210.

[0168] According to some embodiments of the present application, optionally, as shown in FIG. 5 , FIG. 10 and FIG. 11 , the fixture device 350 is a carrying fixture that can be synchronously transferred with the covering film 400 and the electrode body 210 .

[0169] By setting the jig device 350 as a carrying jig 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.

[0170] Optionally, the positioning device 310 is a robot with a clamping function.

[0171] According to some embodiments of the present application, optionally, as shown in FIG. 5 , FIG. 10 and FIG. 11 , the positioning device 310 is configured to insert the electrode body 210 and the covering film 400 into the jig device 350 along the second direction D2 .

[0172] The positioning device 310 can drive the electrode assembly 200 toward the side where the coating film 400 is located along the second direction D2, thereby driving the electrode body 210 and the coating film 400 to be inserted into the jig device 350. After the electrode body 210 and the coating film 400 are inserted into the jig device 350, the jig device 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 positioning device 310 and the jig device 350 can alternately position the electrode assembly 200, which can make the movement of the electrode assembly 200 between different workstations smoother and simplify the action and structure of the jig device 350 to position the electrode assembly 200, thereby improving the coating efficiency.

[0173] Optionally, as shown in Figures 5, 10 and 11, the jig device 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 jig device 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 jig device 350.

[0174] According to some embodiments of the present application, optionally, as shown in Figures 5, 10, and 11, each fixture device 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 a first direction D1, and a limiting gap 354 is formed between the two. The limiting gap 354 is for inserting the electrode body 210 and the coating film 400. The opening and closing mechanism is configured to drive the two limiting members 353 to move closer to or away from each other.

[0175] 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 .

[0176] According to some embodiments of the present application, optionally, as shown in Figures 5, 10, and 11, 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.

[0177] By providing the elastic member 355 , the fixture device 350 can adaptively adjust the clamping force between the electrode body 210 and the coating film 400 .

[0178] Optionally, as shown in FIG. 5 , FIG. 10 and FIG. 11 , 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 .

[0179] According to some embodiments of the present application, optionally, as shown in Figures 5, 10, and 11, 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.

[0180] 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.

[0181] According to some embodiments of the present application, optionally, as shown in Figures 12 to 15, the coating film 400 includes a side coating area 430 connected to the main coating area 410, and the coating equipment 300 also includes a side coating device 370, which is configured to drive the side coating area 430 to contact and coat the side surface 213.

[0182] The side wrapping device 370 can adjust the relative position between the electrode assembly 200 and the side wrapping region 430. By providing the side wrapping device 370 to wrap the side wrapping region 430 on the side surface 213, the wrapping effect of the coating film 400 on the electrode body 210 can be improved.

[0183] According to some embodiments of the present application, optionally, as shown in Figures 12 to 15, the side wrapping device 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 wrapping area 430 to bend toward the side 213 relative to the main wrapping 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 wrapping area 430 on the side 213.

[0184] 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 .

[0185] Such a configuration allows the side wrapping device 370 to smoothly connect the action of bending the side wrapping area 430 and the action of wrapping the side wrapping area 430 on the side surface 213, which is beneficial to simplifying the action and structure of the side wrapping device 370 and improving the wrapping efficiency.

[0186] Alternatively, as shown in Figures 12 to 15, each main covering region 410 may be connected to two side covering regions 430. The two side covering regions 430 connected to the first of the two main covering regions 410 may be designated as B1 and B2, and the two side covering regions 430 connected to the second of the two main covering regions 410 may be designated as B3 and B4. The side covering device 370 includes four side pressure plates 371 corresponding to the four side covering 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] According to some embodiments of the present application, optionally, as shown in Figures 12 to 15, the covering film 400 includes an end covering area 440 connected to the main covering area 410, and the side covering device 370 is configured to contact the transmission end covering area 440 and cover the second one 212b of the two end surfaces 212.

[0191] The side wrapping device 370 can adjust the relative position between the electrode assembly 200 and the end wrapping region 440. By providing the side wrapping device 370 to wrap the end wrapping region 440 on the second end surface 212b of the two end surfaces 212, the wrapping effect of the coating film 400 on the electrode body 210 can be improved.

[0192] According to some embodiments of the present application, optionally, as shown in Figures 12 to 15, the side wrapping device 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 wrapping area 440 to bend relative to the main wrapping 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 wrapping area 440 on the second one 212b of the two end faces 212.

[0193] 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 .

[0194] Optionally, as shown in Figures 12 to 15 , each main covering region 410 is connected to an end covering region 440, and the side covering device 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] Optionally, as shown in Figures 12 to 15, 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.

[0199] Optionally, as shown in Figures 12 to 15, the side-packing device 370 includes a first pressure plate bracket 378 and a second pressure plate bracket 379. The second pressure plate bracket 379 is slidably mounted on the first pressure plate bracket 378 along a first direction D1. A first pressure plate transmission mechanism 372 is mounted 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 mounted on the second pressure plate bracket 379 and move synchronously with the second pressure plate bracket 379 along the first direction D1.

[0200] Furthermore, the first pressing plate bracket 378 and the second pressing plate bracket 379 are relatively fixedly arranged.

[0201] Optionally, as shown in Figures 12 to 15 , the end pressure plate 374 is provided with an adjustable end stopper 3741. The end stopper 3741 is used to abut the primary 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 adapted 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 primary cladding region 410, thereby improving the fit with the primary cladding region 410.

[0202] Optionally, as shown in Figures 12 to 15 , 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 region 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 used to accommodate 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 region 410, thereby improving the fit with the main coating region 410.

[0203] According to some embodiments of the present application, optionally, as shown in Figures 12 to 15 , 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.

[0204] 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.

[0205] According to some embodiments of the present application, optionally, 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, and the first tape attaching component 380 is used to attach the first tape 510 to the electrode assembly 200. The first tape 510 includes a first part 511 and a second part 512 connected to each other. 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 of the two end surfaces 212b.

[0206] 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.

[0207] According to some embodiments of the present application, optionally, the coating device 300 also includes a second tape attaching component 390, which is used to attach a second tape 520 to the electrode assembly 200, and the second tape 520 includes a first part 521 and a second part 522 connected to each other. 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.

[0208] According to some embodiments of the present application, optionally, as shown in Figures 4 and 18, the electrode body 210 includes two electrode modules 220 stacked on each other along the first direction D1, and each electrode module 220 includes a positive electrode plate 221, a separator 222 and a negative electrode plate 223 arranged in sequence.

[0209] 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.

[0210] Furthermore, the two electrode modules 220 can be connected in series or in parallel via the electrode ear portion 201 .

[0211] Optionally, the two electrode modules 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.

[0212] Optionally, the coating equipment 300 also 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 coating device 330. After the film positioning part 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 jig device 350 so that the jig device 350 can reach different workstations, or so that the jig device 350 can 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.

[0213] 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 jig device 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.

[0214] The jig conveyor line 303 can be installed through the dust removal mechanism 305, allowing the dust removal mechanism 305 to remove dust from the jig device 350 that is moved into the dust removal mechanism 305. For example, the dust removal mechanism 305 can remove dust from the unloaded jig device 350 by blowing and exhausting air. Furthermore, different jig conveyor lines 303 can be interconnected, allowing the jig device 350 to circulate through different jig conveyor lines 303.

[0215] 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 .

[0216] Optionally, the coating equipment 300 further includes a conveying device and an assembly device, wherein the conveying device is used to convey the structure to be assembled to each workstation of the assembly equipment. The workstations of the assembly equipment at least include a tab welding device, a shell insertion device, a tab insertion device, a pole welding device, and a bottom cover welding device.

[0217] The tab welding device 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 pole 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.

[0218] 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.

[0219] The purpose of the tab welding device is to form the tab portion 201 after pre-welding the tab sheet, and it can be an ultrasonic welding device, which can ensure that the tab 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 tab piercing device can adopt a clamping structure or a guiding structure, which can guide the tab portion 201 to pass through the through hole smoothly without interfering with the shell 100. The pole welding device is intended to achieve welding of the pole tab portion 201 and the pole, and it can be a laser welding device. The bottom cover welding device is intended to achieve welding of the circumferential edges of the bottom cover and the open end 112 of the shell 100, and is also a laser welding device.

[0220] In addition, the assembly equipment is not limited to including a tab welding device, a shell insertion device, a tab piercing device, a pole welding device, and a bottom cover welding device. For example, when the electrode assembly 200 includes multiple electrode modules 220, for example, when it includes two electrode modules 220, the assembly equipment also includes a matching component, which is used to stack the multiple electrode modules 220 so that the tabs of the two electrode modules 220 are roughly opposite to each other, so that the conveying structure can convey the matched electrode modules 220 to the tab welding device 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.

[0221] Regarding the embodiment of the coating device of the present application, you can also refer to the relevant content of the embodiment of the control method of the coating device below, which will not be repeated here.

[0222] According to some embodiments of the present application, as shown in Figures 19 and 20, the control method described in the embodiment of the control method of the coating apparatus of the present application includes: S100: controlling a positioning device to initially position a component to be coated, wherein the component to be coated has a first direction and a second direction that are orthogonal to each other, and includes two main surfaces disposed opposite to each other along the first direction and two end surfaces disposed opposite to each other along the second direction. S200: controlling two coating devices to initially position a coating film, wherein the coating film includes a connecting region and two main coating regions, the two main coating regions being spaced apart along the first direction, the connecting region connecting between the two main coating regions and disposed opposite to a first of the two end surfaces along the second direction. The two coating devices each secure a corresponding main coating region and each include a transmission mechanism for transmitting the main coating region. S300: controlling the corresponding transmission mechanisms in the two coating devices to move synchronously using a virtual axis, thereby causing the connecting region to cover the first of the two end surfaces and the two main coating regions to cover a corresponding one of the two main surfaces.

[0223] For example, the part to be coated may include an electrode assembly having a first direction and a second direction orthogonal to each other, and including two main surfaces arranged opposite to each other along the first direction and two end surfaces arranged opposite to each other along the second direction. The coating equipment is used to coat the coating film on the electrode assembly.

[0224] The positioning device can be used to control the position of the part to be coated. By controlling the positioning device to initially position the part to be coated, the part to be coated can be placed in a position that is easily covered by the coating film. The coating device can be used to control the position, posture, and shape of the coating film, thereby controlling the position and posture of the connection area and the two main coating areas. By controlling the two coating devices to initially position the coating film, the connection area can be arranged relative to the first of the two end surfaces along the second direction, facilitating the coating of the connection area on the first of the two end surfaces. At the same time, the two main coating areas can be positioned corresponding to the two main surfaces, facilitating the coating of the two main coating areas on the corresponding one of the two main surfaces.

[0225] In some embodiments, when the connection region is disposed opposite to the first of the two end surfaces along the second direction, the connection region may contact the first of the two end surfaces. In other embodiments, when the connection region is disposed opposite to the first of the two end surfaces along the second direction, the connection region may not contact the first of the two end surfaces.

[0226] The real axis refers to the motor's actual mechanical axis. The virtual axis is a calculated reference axis that doesn't have the actual motor structure but reflects the motor's motion characteristics. Coupling the virtual axis with the real axis allows for real-time dynamic control. By controlling the virtual axis to operate according to preset parameters, the real axis can also be controlled to operate according to preset parameters, driving the two main wrapping areas along preset trajectories to wrap around the corresponding one of the two main surfaces. Preset parameters for the real axis can include the position, velocity, and acceleration of the motor's servo axis.

[0227] During the coating process of the coating film on the part to be coated, the two coating devices need to move synchronously so that the two main coating areas are synchronously coated on the corresponding one of the two main surfaces. The two coating devices respectively include at least one transmission mechanism, and one of the coating devices includes at least one transmission mechanism that corresponds to and moves synchronously with the at least one transmission mechanism included in the other coating device. By introducing a virtual axis, it is convenient to achieve high-precision synchronous movement of the corresponding transmission mechanisms in the two coating devices, so that the consistency of the motion trajectories of the two main coating areas is high, and at the same time, the reliability and accuracy of the coating action of the coating equipment can be improved, thereby improving the coating effect and the smoothness of the coating process. In addition, at least two real axes can be controlled by a virtual axis. By introducing a virtual axis, the total number of axes that need to be controlled by the coating equipment can be reduced, the debugging time of the coating equipment can be reduced, and the R&D and production efficiency can be improved.

[0228] Since the two main wrapping areas are connected by the connecting area, if the corresponding transmission mechanisms in the two wrapping devices have low movement accuracy (for example, the rotation speed matching accuracy of the motor output shaft is low), the corresponding transmission mechanisms in the two wrapping devices will have low movement synchronization. One of the two main wrapping areas will interfere with the movement of the other, which may cause the wrapping film to be pulled and torn, and may also cause the two main wrapping areas to be misaligned relative to the corresponding two main surfaces, affecting the wrapping effect.

[0229] Optionally, the positioning device controls the part to be covered by clamping.

[0230] Optionally, the coating device controls the coating film by adsorption or clamping.

[0231] In some embodiments, each coating device has at least one film positioning portion, which can fix the coating film by adsorption or clamping, and the transmission mechanism controls the position, posture and shape of the coating film by driving the film positioning portion to move. For example, two coating devices each have two film positioning portions, and the four film positioning portions respectively clamp or adsorb the four corners of the coating film. The transmission mechanisms of the two coating devices control the movement of the four corners of the coating film relative to the part to be coated through the four film positioning portions, thereby controlling the position, posture and shape of the coating film. By using a virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two coating devices, the four film positioning portions can be made to move synchronously, and the motion trajectories and posture changes of the four film positioning portions can be matched, so that the consistency of the motion trajectories of the two main coating areas is high, which can improve the coating effect. Among them, the motion trajectories of the two main coating areas can be symmetrical to each other, and the movements of the two coating devices can be symmetrical to each other.

[0232] By controlling the virtual axis to run according to preset parameters, the real axis can be controlled to run according to preset parameters, thereby driving the film positioning part to move along the preset trajectory, and then driving the two main covering areas to cover the corresponding one of the two main surfaces respectively.

[0233] The film positioning portion may have an initial position and a target position. After the coating device initially positions the coating film, the film positioning portion is in the initial position. When the film positioning portion is in the target position, the two main coating areas are in contact with and coated on a corresponding one of the two main surfaces.

[0234] Controlling the virtual axis to run according to preset parameters, thereby driving the membrane positioning part to move along the preset trajectory includes:

[0235] The virtual axis is controlled to operate according to preset parameters, thereby driving at least two transmission mechanisms to drive corresponding film positioning parts to synchronously transform from an initial posture to a target posture.

[0236] In some embodiments, the relevant programs and parameters for the operation of the virtual axis are stored in the memory of the coating device and can be called by the controller of the coating device during the coating process.

[0237] According to some embodiments of the present application, optionally, the transmission mechanism includes a first transmission mechanism for driving the main coating area to move along the first direction, and the virtual axis includes a first virtual axis. Using the virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two coating devices includes:

[0238] S310: Using the first virtual axis to control the first transmission mechanisms of the two covering devices to drive the corresponding main covering areas to move synchronously along the second direction toward the object to be covered.

[0239] Specifically, the first virtual axis is used to control the first transmission mechanisms of the two enveloping devices to drive the corresponding main enveloping areas to move synchronously along the second direction toward the positioning device. By using the first virtual axis to control the first transmission mechanisms of the two enveloping devices, the consistency and movement accuracy of the two main enveloping areas along the second direction can be improved.

[0240] In some embodiments, each coating device has at least one film positioning portion, which can fix the coating film by adsorption or clamping. The first transmission mechanism controls the main coating area to move along the second direction by driving the film positioning portion to move along the second direction.

[0241] According to some embodiments of the present application, the transmission mechanism may optionally include a second transmission mechanism for cooperating with the main coating area to flip, and the virtual axis may include a second virtual axis. Using the virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two coating devices includes:

[0242] S320: Using the second virtual axis to control the second transmission mechanisms of the two covering devices to cooperate with the corresponding main covering areas to synchronously flip toward the corresponding main surfaces.

[0243] The two main covering areas can be flipped toward the corresponding main surface until they are attached to the corresponding main surface. By using the second virtual axis to control the second transmission mechanism of the two covering devices, it is beneficial to improve the completeness, consistency and movement accuracy of the flipping movement of the two main covering areas.

[0244] In some embodiments, each coating device has at least one film positioning portion, which can fix the coating film by adsorption or clamping, and the second transmission mechanism drives the film positioning portion to rotate to assist in controlling the corresponding main coating area to flip synchronously toward the corresponding main surface. Specifically, the film positioning portion contacts and adsorbs or clamps a portion of the coating film. When the two main coating areas are flipped toward the corresponding main surfaces respectively, the transmission mechanism drives the film positioning portion to rotate to control the coating film to flip together with the area adsorbed or clamped by the film positioning portion, thereby reducing the interference of the posture of the film positioning portion on the flipping of the two main coating areas toward the corresponding main surfaces. Furthermore, during the flipping process of the main coating area, the film positioning portion can rotate to keep the area of ​​the coating film adsorbed or clamped by the film positioning portion in the same plane as the corresponding main coating area.

[0245] In some embodiments, the film positioning portion absorbs or clamps a portion of the main covering area, and the transmission mechanism controls the flipping of the portion by driving the film positioning portion to rotate. In other embodiments, the covering film includes an end covering area connected to the main covering area, the end covering area being configured to contact and cover the second of the two end surfaces, and the film positioning portion absorbs or clamps a portion of the end covering area.

[0246] According to some embodiments of the present application, optionally, the transmission mechanism includes a third transmission mechanism for driving the main coating zones to move respectively along the second direction, and the virtual axis includes a third virtual axis. Using the virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two coating devices includes:

[0247] S330: Using the third virtual axis to control the third transmission mechanisms of the two covering devices to drive the corresponding main covering areas to move toward each other synchronously along the first direction.

[0248] With such an arrangement, the two main covering areas can gradually approach the corresponding main surfaces along the first direction until they are attached to the corresponding main surfaces. By using the third virtual axis to control the third transmission mechanism of the two covering devices, it is beneficial to improve the consistency and movement accuracy of the flipping movement of the two main covering areas.

[0249] In some embodiments, each coating device has at least one film positioning portion, which can fix the coating film by adsorption or clamping. The third transmission mechanism controls the main coating area to move along the first direction by driving the film positioning portion to move along the first direction.

[0250] According to some embodiments of the present application, optionally, control processes of at least two of the first virtual axis, the second virtual axis, and the third virtual axis are performed synchronously.

[0251] In other words, when one of the first, second, and third virtual axes controls the movement of the corresponding transmission mechanism, another of the first, second, and third virtual axes controls the movement of the corresponding transmission mechanism simultaneously. This arrangement allows at least two of the first, second, and third transmission mechanisms to cooperate with each other, simplifying the motion trajectory of the primary wrapping area and shortening its movement time, making the primary wrapping area's movement of the primary surface smoother and more concise, and improving wrapping efficiency.

[0252] According to some embodiments of the present application, optionally, the synchronous control process of at least two of the first virtual axis, the second virtual axis, and the third virtual axis includes:

[0253] S341: In the first stage, the control process of the first virtual axis and the second virtual axis are set to be performed synchronously.

[0254] During the first phase, the operation of the first virtual axis causes the first transmission mechanism to drive the main encapsulating area in the second direction. This, through the two main encapsulating areas, applies a pulling force to the connecting area toward the object to be encapsulated. Simultaneously, the connecting area is blocked by the first of the two end surfaces, allowing the connecting area to adhere tightly to the first of the two end surfaces. After the first phase, the main encapsulating area partially flips toward the main surface, resulting in a partial overlap between the main encapsulating area and the main surface in the second direction. During the first phase, the operation of the second virtual axis causes the second transmission mechanism to cooperate with the first transmission mechanism to reduce interference from the membrane positioning portion's posture with the main encapsulating area's movement in the second direction.

[0255] S342: In the second stage, the control processes of the second virtual axis and the third virtual axis are set to be performed synchronously.

[0256] During the second stage, the operation of the third virtual axis causes the third transmission mechanism to drive the main cladding region to move in the first direction, gradually reducing the distance between the end of the main cladding region distal to the connection region and the main surface along the first direction. During the second stage, the operation of the second virtual axis causes the second transmission mechanism to cooperate with the third transmission mechanism to reduce interference from the posture of the membrane positioning portion with the movement of the end of the main cladding region distal to the connection region along the first direction toward the main surface.

[0257] S343: In the third stage, the control processes of the first virtual axis, the second virtual axis, and the third virtual axis are set to be performed synchronously.

[0258] In the third stage, the operation of the first virtual axis can cause the first transmission mechanism to drive the main coating area to move in the second direction, and apply a pulling force toward the part to be coated to the connecting area through the two main coating areas. At the same time, the connecting area is blocked by the first of the two end surfaces, so that the connecting area can be tightly attached to the first of the two end surfaces. The operation of the third virtual axis can cause the third transmission mechanism to drive the main coating area to move in the first direction. Along the first direction, the distance between the end of the main coating area away from the connecting area and the main surface gradually decreases until they contact. After the third stage, the main coating area will cover the main surface. In the third stage, the operation of the second virtual axis can cause the second transmission mechanism to cooperate with the first transmission mechanism and the third transmission mechanism to reduce the interference of the posture of the membrane positioning portion on the simultaneous movement of the main coating area in the first and second directions.

[0259] By dividing the process of two main coating areas covering two main surfaces separately into the first, second, and third stages, the coating film can be smoothly and efficiently applied to the component to be coated. If the process of two main coating areas covering two main surfaces is divided into more stages, the transmission mechanism will have more movements and the control process will be more complex, which is not conducive to improving coating efficiency. If the process of two main coating areas covering two main surfaces is divided into fewer stages, the coating process will not have detailed movements, affecting the coating effect.

[0260] In some embodiments, each coating device has at least one film positioning portion, which can fix the coating film by adsorption or clamping. The first transmission mechanism is used to drive the film positioning portion to move in the second direction, the second transmission mechanism is used to drive the film positioning portion to rotate, and the third transmission mechanism is used to drive the film positioning portion to move in the first direction. In this way, the transmission mechanism can adjust the position and posture of the film positioning portion, thereby controlling the position, posture and shape of the coating film, so that the coating film is coated on the part to be coated.

[0261] Specifically, in the first stage, the synchronous operation of the first virtual axis and the second virtual axis can cause the first transmission mechanism to drive the film positioning portion to move in the second direction while the second transmission mechanism drives the film positioning portion to rotate, thereby causing the position, posture, and shape of the coating film to change. The film positioning portion can move along the second direction to be opposite to the main surface in the first direction so that the connection area covers and is closely attached to the first of the two end surfaces, and the main coating area is flipped toward the corresponding main surface and partially overlaps with the main surface along the second direction. In the second stage, the synchronous operation of the second virtual axis and the third virtual axis can cause the third transmission mechanism to drive the film positioning portion to move in the first direction toward the main surface while the second transmission mechanism drives the film positioning portion to rotate, thereby causing the corresponding main coating area to flip toward the main surface. In the third stage, the synchronous operation of the first, second, and third virtual axes can cause the film positioning portion to move and rotate in the first and second directions simultaneously, thereby causing the main coating area to flip toward the main surface until the main coating area covers the main surface.

[0262] Optionally, as shown in Figure 21, the preset trajectory of the movement of the membrane positioning part is divided into a first trajectory segment (point E2 to point F2 and point E1 to point F1), a second trajectory segment (point F2 to point G2 and point F1 to point G1) and a third trajectory segment (point G2 to point H2 and point G1 to point H1) in chronological order. In the first stage, the membrane positioning part moves along the first trajectory segment, that is, from point E2 to point F2 or from point E1 to point F1. In the second stage, the membrane positioning part moves along the second trajectory segment, that is, from point F2 to point G2 or from point F1 to point G1. In the third stage, the membrane positioning part moves along the third trajectory segment, that is, from point G2 to point H2 or from point G1 to point H1. The virtual axis can control the movement of the transmission mechanism by linear interpolation, and then control the membrane positioning part to move along the first trajectory segment, the second trajectory segment and the third trajectory segment in sequence. Among them, the first trajectory segment, the second trajectory segment and the third trajectory segment are straight lines or nearly straight lines.

[0263] If the preset trajectory of the membrane positioning unit's movement is divided into a large number of segments, the transmission mechanism will have to move more frequently, making the control process more complex and hindering coating efficiency. If the preset trajectory of the membrane positioning unit's movement is divided into fewer segments, the coating process will lack detailed movement, affecting the coating effect. Through linear interpolation, the virtual axis can perform data densification based on the preset trajectory and the actual motion characteristics of the membrane positioning unit, ensuring that the actual movement of the membrane positioning unit more accurately matches the first, second, and third trajectory segments, thereby precisely controlling the coating action.

[0264] According to some embodiments of the present application, optionally, in the first stage, setting the control process of the first virtual axis and the second virtual axis to be performed synchronously includes:

[0265] S3411: In the first phase, the third virtual axis does not operate.

[0266] Such an arrangement allows the main covering area to still move in the second direction when the connecting area is blocked by the first of the two end surfaces, thereby tightening the covering film and enhancing the adhesion of the connecting area to the first of the two end surfaces.

[0267] In the second stage, the control process of the second virtual axis and the third virtual axis is set to be synchronous, including:

[0268] S3421: In the second phase, the first virtual axis does not operate.

[0269] Such a setting can reduce the total number of axes controlled by the controller in the second stage, which is beneficial to reducing the debugging time of the coating equipment.

[0270] According to some embodiments of the present application, optionally, the control method further includes:

[0271] S344: In the second and third stages, the positioning device is controlled to drive the component to be covered to move along the second direction toward the connection area.

[0272] Such an arrangement allows the part to be coated to approach the position of the next process step while the main surface is being coated with the coating film, thereby improving the working efficiency of the coating equipment. In addition, the direction of movement of the part to be coated along the second direction toward the connection area is opposite to the direction of movement of the main coating area along the second direction toward the part to be coated. The positioning device can be controlled to drive the part to be coated to move along the second direction toward the connection area to achieve the mutual approach of the part to be coated and the main coating area along the second direction. In this way, in the second stage, the main coating area can be allowed to remain stationary in the second direction, and in the third stage, the movement displacement of the main coating area along the second direction can be reduced, thereby shortening the movement distance of the main coating area along the second direction during the coating process, thereby reducing the coating time and improving the coating efficiency.

[0273] In some embodiments, the positioning device includes a fourth transmission mechanism and a positioning fixture. The positioning fixture is used to clamp the component to be coated. The fourth transmission mechanism is used to drive the positioning fixture in a second direction toward the connection area under the control of a controller, thereby driving the component to be coated in the second direction toward the connection area. Furthermore, the motor output shaft of the fourth transmission mechanism is a real axis. The motor output shaft of the fourth transmission mechanism, together with the first virtual axis, the second virtual axis, and the third virtual axis, controls the coating process of the primary coating area on the primary surface through a four-axis linkage.

[0274] According to some embodiments of the present application, optionally, controlling the two coating devices to initially position the coating film includes:

[0275] S210: Initially positioning the covering film using two covering devices so that the connecting area and the two main covering areas are coplanar with each other, wherein the connecting area and the two main covering areas are coplanar or approximately coplanar with each other.

[0276] Such an arrangement can ensure that the covering device is sufficiently spaced from the connection area, reducing interference of the covering device on the process of the connection area covering the first of the two end surfaces, and facilitating contact between the connection area and the first of the two end surfaces during the covering process.

[0277] Furthermore, the covering device may include a film positioning portion. During the process of the connection area covering the first of the two end surfaces, the film positioning portion and the connection area are sufficiently spaced apart to reduce the risk of interference between the film positioning portion and the component to be covered.

[0278] According to some embodiments of the present application, optionally, controlling the two coating devices to initially position the coating film includes:

[0279] S220: Initially positioning the covering film using two covering devices so that the connection area contacts the first of the two end surfaces.

[0280] Such an arrangement allows the connection area to first contact the first of the two end surfaces before the main covering area covers the main surface. During the process of the main covering area covering the main surface, the first of the two end surfaces can support the connection area, so that the first of the two end surfaces can serve as a fulcrum when the main covering area is flipped, which is beneficial to improving the stability of the main covering area flipping process.

[0281] In some embodiments, before the two wrapping devices initially position the wrapping film, the connection area is opposite to and spaced from the first of the two end faces along the second direction. When the two wrapping devices initially position the wrapping film, the two wrapping devices can drive the wrapping film to move along the second direction toward the part to be wrapped so that the connection area can contact the first of the two end faces.

[0282] In some embodiments, the component to be coated includes a tab portion, the tab portion protruding from a first of two end surfaces, and an opening is provided in a connection region. Before initially positioning the coating film using the two coating devices, the method includes: using the two coating devices to position the coating film so that the connection region is disposed toward the tab portion. Initially positioning the coating film using the two coating devices includes: controlling the two coating devices to drive the coating film to move in a second direction toward the component to be coated so that the tab portion passes through the opening and the connection region contacts the first of the two end surfaces.

[0283] Controlling the positioning device to initially position the part to be covered includes:

[0284] S110: Initially positioning the component to be covered by using a positioning device so that the connection area contacts the first of the two end surfaces.

[0285] Such an arrangement allows the connection area to first contact the first of the two end surfaces before the main covering area covers the main surface. During the process of the main covering area covering the main surface, the first of the two end surfaces can support the connection area, so that the first of the two end surfaces can serve as a fulcrum when the main covering area is flipped, which is beneficial to improving the stability of the main covering area flipping process.

[0286] In some embodiments, before the positioning device initially positions the part to be covered, the connection area is opposite to and spaced from the first of the two end faces along the second direction. When the positioning device initially positions the part to be covered, the positioning device can drive the part to be covered to move along the second direction toward the connection area so that the connection area can contact the first of the two end faces.

[0287] In some embodiments, the component to be coated includes a tab portion protruding from a first of two end surfaces, and an opening is provided in the connection region. Before initially positioning the component to be coated using a positioning device, the method includes: using the positioning device to position the component to be coated such that the tab portion faces the connection region. Initially positioning the component to be coated using the positioning device includes: controlling the positioning device to drive the component to be coated to move in a second direction toward the coating film such that the tab portion passes through the opening and the connection region contacts the first of the two end surfaces.

[0288] According to some embodiments of the present application, optionally, the control method further includes:

[0289] S400: Decoupling the virtual axis from the transmission mechanisms of the two covering devices, and controlling the transmission mechanisms of the two covering devices to reset.

[0290] Before coating the main surface, the virtual axis must first be coupled to the transmission mechanisms of the two coating devices, allowing the virtual axis to control the transmission mechanisms. After coating the main surface and the first of the two end surfaces, the transmission mechanisms need to be reset to transfer the next coating film to the next part to be coated. This reset process requires low precision and synchronization of the transmission mechanisms. The virtual axis can be decoupled from the transmission mechanisms of the two coating devices, allowing each transmission mechanism to be quickly reset.

[0291] In some embodiments, when the transmission mechanisms of the two covering devices are reset, the virtual shaft and the transmission mechanisms of the two covering devices may still remain coupled.

[0292] Optionally, using virtual axes to control the synchronous movement of corresponding transmission mechanisms in the two covering devices includes: coupling the first virtual axis to at least two first transmission mechanisms via a first virtual gear, coupling the second virtual axis to at least two second transmission mechanisms via a second virtual gear, and coupling the third virtual axis to at least two third transmission mechanisms via a third virtual gear. Unlike gears with actual mechanical structures, the first, second, and third virtual gears are all virtual gears with program-controlled speed ratios. The first virtual gear can be used to control the speed ratio between the first virtual axis and the first transmission mechanism, the second virtual gear can be used to control the speed ratio between the second virtual axis and the second transmission mechanism, and the third virtual gear can be used to control the speed ratio between the third virtual axis and the third transmission mechanism.

[0293] According to some embodiments of the present application, optionally, the control method of the coating equipment includes: controlling the positioning device to perform initial positioning on the part to be coated, wherein the part to be coated has a first direction and a second direction orthogonal to each other, and includes two main surfaces arranged opposite to each other along the first direction and two end surfaces arranged opposite to each other along the second direction; controlling the two coating devices to perform initial positioning on the coating film, wherein the coating film includes a connecting area and two main coating areas, the two main coating areas are arranged to be spaced apart from each other along the first direction, the connecting area is connected between the two main coating areas and is arranged opposite to the first of the two end surfaces along the second direction; the two coating devices respectively fix the corresponding main coating areas, and respectively include a transmission mechanism for transmitting the main coating areas; using a virtual axis to control the corresponding transmission mechanisms in the two coating devices to move synchronously, so that the connecting area covers the first of the two end surfaces, and the two main coating areas respectively cover the corresponding one of the two main surfaces. The transmission mechanism includes a first transmission mechanism for driving the main coating area to move in a first direction, and the virtual axis includes a first virtual axis. Using the virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two coating devices includes: using the first virtual axis to control the first transmission mechanisms of the two coating devices to drive the corresponding main coating areas to move synchronously in a second direction toward the object to be coated. The transmission mechanism includes a second transmission mechanism for coordinating the flipping of the main coating areas, and the virtual axis includes a second virtual axis. Using the virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two coating devices includes: using the second virtual axis to control the second transmission mechanisms of the two coating devices to coordinate the flipping of the corresponding main coating areas toward the corresponding main surfaces. The transmission mechanism includes a third transmission mechanism for driving the main coating areas to move in the second direction, and the virtual axis includes a third virtual axis. Using the virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two coating devices includes: using the third virtual axis to control the third transmission mechanisms of the two coating devices to drive the corresponding main coating areas to move toward each other synchronously in the first direction. The control process of at least two of the first virtual axis, the second virtual axis, and the third virtual axis is performed synchronously. The synchronous control process of at least two of the first virtual axis, the second virtual axis, and the third virtual axis includes: in a first stage, setting the control process of the first virtual axis and the second virtual axis to be synchronous; in a second stage, setting the control process of the second virtual axis and the third virtual axis to be synchronous; and in a third stage, setting the control process of the first virtual axis, the second virtual axis, and the third virtual axis to be synchronous. In the first stage, setting the control process of the first virtual axis and the second virtual axis to be synchronous includes: in the first stage, the third virtual axis is not operating; in the second stage, setting the control process of the second virtual axis and the third virtual axis to be synchronous includes: in the second stage, the first virtual axis is not operating. In the second and third stages, controlling the positioning device to drive the part to be coated to move along the second direction toward the connection area. Controlling the two coating devices to initially position the coating film includes: using the two coating devices to initially position the coating film so that the connection area and the two main coating areas are coplanar with each other.Controlling the two covering devices to initially position the covering film includes: using the two covering devices to initially position the covering film so that the connection area contacts the first of the two end surfaces; or controlling the positioning device to initially position the object to be covered includes: using the positioning device to initially position the object to be covered so that the connection area contacts the first of the two end surfaces. Decoupling the virtual axis from the transmission mechanisms of the two covering devices, and controlling the transmission mechanisms of the two covering devices to reset.

[0294] In some embodiments, each coating device has at least one film positioning portion, which can fix the coating film by adsorption or clamping. The first transmission mechanism is used to drive the film positioning portion to move in the second direction, the second transmission mechanism is used to drive the film positioning portion to rotate, and the third transmission mechanism is used to drive the film positioning portion to move in the first direction. In this way, the transmission mechanism can adjust the position and posture of the film positioning portion to control the position, posture, and shape of the coating film, so that the main coating area is coated on the main surface. The end of the main coating area close to the film positioning portion can rotate around the end of the main coating area close to the connection area to achieve the flipping of the main coating area toward the main surface. The membrane positioning part has a first total displacement, a total angular deflection in the first direction and a second total displacement in the second direction between the initial position and the target position; using the virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two coating devices includes: controlling the first virtual axis to operate to control at least two first transmission mechanisms to drive the corresponding membrane positioning parts to synchronously move the first total displacement along the second direction toward the positioning device; controlling the second virtual axis to operate to control at least two second transmission mechanisms to drive the corresponding membrane positioning parts to synchronously rotate the total angular deflection; controlling the third virtual axis to operate to control at least two third transmission mechanisms to drive at least two membrane positioning parts to synchronously move the second total displacement along the first direction.

[0295] Furthermore, the motion trajectory of the film positioning portion is divided into a first trajectory segment, a second trajectory segment, and a third trajectory segment; the positioning device includes a fourth transmission mechanism and a positioning fixture, the positioning fixture is used to clamp the part to be coated, and the fourth transmission mechanism is used to drive the positioning fixture to move along the second direction toward the connection area under the control of the controller, thereby driving the part to be coated to move along the second direction toward the connection area; using the virtual axis to control the synchronous movement of the corresponding transmission mechanisms in the two coating devices includes:

[0296] In the first stage, the first virtual axis and the second virtual axis operate synchronously, thereby controlling the membrane positioning portion to move along the first trajectory segment, that is, the first virtual axis and the second virtual axis drive at least two transmission mechanisms to drive the corresponding membrane positioning portion to synchronously move the first displacement component and rotate the first angle component along the second direction toward the positioning device; in the first stage, the third virtual axis and the fourth transmission mechanism do not operate;

[0297] In the second stage, the second virtual axis and the third virtual axis operate synchronously, thereby controlling the membrane positioning portion to move along the second trajectory segment, that is, the second virtual axis and the third virtual axis drive at least two transmission mechanisms to drive the corresponding membrane positioning portions to synchronously move along the first direction by the second displacement component to move closer to each other and rotate by the second angle component; in the second stage, the first virtual axis does not operate, and the fourth transmission mechanism drives the positioning fixture to move along the second direction toward the connection area by the third displacement component;

[0298] In the third stage, the first virtual axis, the second virtual axis, and the third virtual axis operate synchronously, thereby controlling the membrane positioning portion to move along the third trajectory segment, that is, driving at least two transmission mechanisms to drive the corresponding membrane positioning portion to synchronously move the fourth displacement component along the second direction toward the positioning device, move the fifth displacement component along the first direction to move closer to each other, and rotate the third angle component; in the third stage, the fourth transmission mechanism drives the positioning fixture to move the sixth displacement component along the second direction toward the connection area;

[0299] During the process of the primary covering area covering the corresponding primary surface, the first total displacement is equal to the sum of the first and fourth displacement components; the total angular deflection is equal to the sum of the first, second, and third angular components; and the second total displacement is equal to the sum of the second and fifth displacement components. The relative displacement of the positioning fixture and the membrane positioning portion in the second direction is the sum of the first total displacement, the third, and the sixth displacement components.

[0300] Optionally, the total angular deflection ranges from 70° to 100°, the first angular component ranges from 5° to 50°, the second angular component ranges from 5° to 30°, and the third angular component ranges from 20° to 50°.

[0301] Optionally, using a virtual axis to control the synchronous movement of corresponding transmission mechanisms in the two coating devices includes: after the third stage or after the end of the third stage, controlling the electrode assembly and the coating film to move along the second direction toward the above-mentioned jig device so that the electrode assembly and the coating film are inserted into the jig device, and the jig device can clamp the electrode assembly and the coating film so that the main coating area remains taut and close to the main surface.

[0302] Optionally, the controller is a PLC controller, and the control method includes the following processes: first, the coating device is initialized, that is, the coating device is controlled to pick up the coating film through the film positioning part and initially position the coating film, and the positioning device is controlled to clamp the part to be coated through the positioning fixture and initially position the part to be coated; then the servo axes of the first transmission mechanism, the second transmission mechanism and the third transmission mechanism are adjusted to the coating waiting position and whether the adjustment results of the servo axes are in place are confirmed; after confirming that the servo axes are adjusted in place, the first transmission mechanism is coupled to the first virtual axis through the first virtual gear, the second transmission mechanism is coupled to the second virtual axis through the second virtual gear, and the third transmission mechanism is coupled to the third virtual axis through the third virtual gear and the coupling results are confirmed; after confirming that the coupling results meet the requirements, the virtual axis is controlled to return to the origin and the results are confirmed, and after confirming that the virtual axis returns to the origin, the first stage is entered and it is confirmed whether the operation results of the first stage meet the requirements, that is, through the virtual axis straight line Interpolation causes the membrane positioning part to move along the first trajectory segment and determines whether the posture of the membrane positioning part meets the requirements; after confirming that the posture of the membrane positioning part meets the requirements, the second stage is entered and the operation result of the second stage is confirmed to meet the requirements, that is, the membrane positioning part is moved along the second trajectory segment through virtual axis linear interpolation and the posture of the membrane positioning part meets the requirements; after confirming that the posture of the membrane positioning part meets the requirements, the third stage is entered and the operation result of the third stage is determined to meet the requirements, that is, the membrane positioning part is moved along the third trajectory segment through virtual axis linear interpolation and the posture of the membrane positioning part is determined to be the target posture; after confirming that the posture of the membrane positioning part is the target posture, the first transmission mechanism and the first virtual axis are decoupled, the second transmission mechanism and the second virtual axis are decoupled, and the third transmission mechanism and the third virtual axis are decoupled and it is determined whether the decoupling is completed; after confirming that the decoupling is completed, the first transmission mechanism, the second transmission mechanism and the third transmission mechanism return to a safe position to facilitate the coating of the next part to be coated.

[0303] Regarding the control method embodiment of the coating device of the present application, reference can also be made to the relevant content of the coating device embodiment above, which will not be repeated here.

[0304] To sum up, the embodiments of the present application can realize the adjustment of the relative position relationship between the workpiece to be coated and the coating film. By introducing a virtual axis, when the coating film coats the two main surfaces of the workpiece to be coated, it is convenient to realize the high-precision synchronous movement of the corresponding transmission mechanisms in the two coating devices, so that the motion trajectories of the two main coating areas are highly consistent, and at the same time, it can improve the reliability and accuracy of the coating action of the coating equipment, thereby improving the coating effect and the smoothness of the coating process.

[0305] 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 control method for a coating device, characterized in that: include: Controlling the positioning device to initially position the component to be covered, wherein the component to be covered has a first direction and a second direction orthogonal to each other, and includes two main surfaces disposed opposite to each other along the first direction and two end surfaces disposed opposite to each other along the second direction; Controlling two covering devices to initially position the covering film, wherein the covering film includes a connecting area and two main covering areas, the two main covering areas are spaced apart from each other along the first direction, the connecting area is connected between the two main covering areas and is arranged opposite to the first of the two end surfaces along the second direction; the two covering devices respectively fix the corresponding main covering areas and each include a transmission mechanism for transmitting the main covering areas; The corresponding transmission mechanisms in the two covering devices are controlled to move synchronously by using a virtual axis, so that the connecting area covers the first of the two end surfaces, and the two main covering areas respectively cover the corresponding one of the two main surfaces.

2. The control method according to claim 1, characterized in that: The transmission mechanism includes a first transmission mechanism for driving the main cladding area to move along the first direction, and the virtual axis includes a first virtual axis; The method of controlling the synchronous movement of the corresponding transmission mechanisms in the two covering devices by using a virtual axis includes: The first virtual axis is used to control the first transmission mechanisms of the two covering devices to drive the corresponding main covering areas to move synchronously along the second direction toward the object to be covered.

3. The control method according to claim 2, characterized in that: The transmission mechanism includes a second transmission mechanism for cooperating with the main covering area to flip, and the virtual axis includes a second virtual axis; The method of controlling the synchronous movement of the corresponding transmission mechanisms in the two covering devices by using a virtual axis includes: The second virtual axis is used to control the second transmission mechanisms of the two covering devices to cooperate with the corresponding main covering areas to turn toward the corresponding main surfaces synchronously.

4. The control method according to claim 3, characterized in that: The transmission mechanism includes a third transmission mechanism for driving the main cladding areas to move respectively along the second direction, and the virtual axis includes a third virtual axis; The method of controlling the synchronous movement of the corresponding transmission mechanisms in the two covering devices by using a virtual axis includes: The third virtual axis is used to control the third transmission mechanisms of the two covering devices to drive the corresponding main covering areas to move toward each other synchronously along the first direction.

5. The control method according to claim 4, characterized in that: Control processes of at least two of the first virtual axis, the second virtual axis, and the third virtual axis are performed synchronously.

6. The control method according to claim 5, characterized in that: The control process of at least two of the first virtual axis, the second virtual axis, and the third virtual axis is performed synchronously, comprising: In the first stage, the control processes of the first virtual axis and the second virtual axis are set to be performed synchronously; In the second stage, the control processes of the second virtual axis and the third virtual axis are set to be performed synchronously; In the third stage, the control processes of the first virtual axis, the second virtual axis, and the third virtual axis are set to be performed synchronously.

7. The control method according to claim 6, characterized in that: In the first stage, setting the control process of the first virtual axis and the second virtual axis to be performed synchronously includes: In the first phase, the third virtual axis does not operate; In the second stage, setting the control process of the second virtual axis and the third virtual axis to be performed synchronously includes: During the second phase, the first virtual axis does not operate.

8. The control method according to claim 6, characterized in that: The control method further includes: In the second stage and the third stage, the positioning device is controlled to drive the piece to be covered to move along the second direction toward the connecting area.

9. The control method according to any one of claims 1 to 8, characterized in that: The controlling of the two coating devices to initially position the coating film comprises: The two covering devices are used to initially position the covering film so that the connecting area and the two main covering areas are coplanar with each other.

10. The control method according to any one of claims 1 to 8, characterized in that: The controlling of the two coating devices to initially position the coating film comprises: Initially positioning the covering film using the two covering devices so that the connecting area and the first of the two end surfaces are in contact with each other; or The control positioning device performs initial positioning of the component to be covered, including: The piece to be covered is initially positioned by using a positioning device so that the connecting area and the first of the two end surfaces are in contact with each other.

11. The control method according to any one of claims 1 to 8, characterized in that: The control method further includes: The virtual shaft is decoupled from the transmission mechanisms of the two covering devices, and the transmission mechanisms of the two covering devices are controlled to reset.

12. A coating device, characterized in that: The coating device is used to control the coating film to coat the to-be-coated part, wherein the to-be-coated part has a first direction and a second direction orthogonal to each other, and includes two main surfaces disposed opposite to each other along the first direction and two end surfaces disposed opposite to each other along the second direction; the coating film includes a connecting area and two main coating areas, the two main coating areas are spaced apart from each other along the first direction, and the connecting area is connected between the two main coating areas; The coating equipment includes: A positioning device for initially positioning the article to be covered so that the two main surfaces are at least partially exposed; Two covering devices, used for initially positioning the covering film so that the connecting area is arranged opposite to the first of the two end surfaces along the second direction; the two covering devices respectively fix the corresponding main covering area and each include a transmission mechanism for transmitting the main covering area; A controller, configured to execute program data during operation to complete the method according to any one of claims 1 to 11.

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