Battery coating equipment and battery production system

Abstract

The present invention provides a battery coating device and a battery production system, relating to the field of battery technology. The battery coating device includes a first coating unit and a second coating unit. The present invention utilizes the first coating unit to coat the entire surface of a battery cell, excluding the end faces, with a first protective film. The second coating unit then coats both end faces of the battery cell with a second protective film. Compared to the related art method of coating each surface of the battery cell individually, the coating efficiency of the battery cell can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more particularly, to a battery coating device and a battery production system. Background Art

[0002] Batteries are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools, etc.

[0003] During the battery production process, a protective film needs to be coated on the outside of the battery cell to protect the battery cell and improve its insulation. How to improve the efficiency of the battery cell coating is a research direction in battery technology. Summary of the Invention

[0004] The present application provides a battery coating device and a battery production system, which can improve the efficiency of battery cell coating.

[0005] In the first aspect, an embodiment of the present application provides a battery coating device, comprising a first coating unit and a second coating unit, the first coating unit comprising a mounting frame, a first clamping device and a rotary film-releasing device, the first clamping device being connected to the mounting frame and being used to clamp at least one of the opposite ends of a battery cell, the rotary film-releasing device being installed on the mounting frame and being configured to rotate around the first clamping device, the rotary film-releasing device being used to wrap a first protective film around the circumference between the opposite ends of the battery cell; the second coating unit being used to attach a second protective film to the end faces of the opposite ends of the battery cell.

[0006] By adopting the above technical solution, a first coating unit is used to coat the circumference of the battery cell except the end face with a first protective film, and then a second coating unit is used to coat the two end faces of the battery cell with a second protective film. Compared with the related technology that can only coat each surface of the battery cell one by one, the coating efficiency of the battery cell can be improved.

[0007] In some embodiments of the present application, the mounting frame includes two first brackets arranged opposite to each other along a first direction, the first direction intersects with the arrangement direction of the rotating film placing device to the first clamping device, the first clamping device includes two first clamping components, and the two first clamping components are installed one-to-one on the two first brackets and are used to clamp the opposite ends of the battery cells one-to-one.

[0008] By adopting the above technical solution, two first brackets are used to install two first clamping assemblies respectively, thereby improving the installation stability of the first clamping device. The two first clamping assemblies jointly clamp the battery cell, thereby improving the position stability of the battery cell during the coating process.

[0009] In some embodiments of the present application, the first clamping assembly includes a supporting mechanism and a pressing mechanism, the supporting mechanism is connected to the mounting frame, the pressing mechanism is connected to the supporting mechanism, the supporting mechanism and the pressing mechanism are arranged relative to each other and cooperate with each other to clamp the end of the battery cell.

[0010] By adopting the above technical solution, the first surface of the battery cell is supported by a supporting mechanism to complete the initial fixation of the battery cell on the first clamping device, and then the second surface is pressed by a clamping mechanism to achieve clamping of the end of the battery cell, which can improve the stability of clamping the battery cell.

[0011] In some embodiments of the present application, the supporting mechanism includes a first mounting member, a first telescopic member and a supporting member, the first mounting member is connected to the first bracket, the first telescopic member is connected to the first mounting member, the supporting member is connected to the first telescopic member, and moves along the first direction driven by the first telescopic member.

[0012] By adopting the above technical solution, the supporting mechanism is designed to include a first mounting member, a first telescopic member and a supporting member. The first telescopic member is used to drive the supporting member to move, which facilitates the adjustment of the distance between the two supporting members. This not only facilitates the support and clamping of the battery cell, but also improves the universality of the first clamping device for battery cells of different lengths.

[0013] In some embodiments of the present application, the supporting member includes a connecting portion and a supporting portion connected at an angle, the connecting portion is used to connect to the first mounting member and to install the clamping mechanism, and the supporting portion has a supporting surface parallel to the first direction.

[0014] By adopting the above technical solution, the supporting member is designed to be a connecting portion and a supporting portion connected at an angle, and the connecting portion is used to dock the first mounting member and to install the clamping mechanism, achieving multi-purpose integration.

[0015] In some embodiments of the present application, the clamping mechanism includes a second mounting member, a second telescopic member and a clamping member, the second mounting member is mounted on the supporting mechanism, the second telescopic member is mounted on the second mounting member, the clamping member is connected to the second telescopic member, and is driven by the second telescopic member to approach or move away from the supporting surface.

[0016] By adopting the above technical solution, the clamping mechanism is designed to include a second mounting member, a second telescopic member and a clamping member. The second telescopic member is used to drive the clamping member to move, thereby facilitating adjustment of the distance between the clamping member and the clamping mechanism.

[0017] In some embodiments of the present application, the rotary film unwinding device includes a rotating frame, a rotary drive assembly and a film unwinding assembly. The rotating frame is connected to the mounting frame in a manner of rotating around the first clamping device. The rotary drive assembly is connected to the mounting frame and is transmission-connected to the rotating frame for driving the rotating frame to rotate. The film unwinding assembly is connected to the rotating frame and is used to unwind the first protective film.

[0018] Using the above technical solution, the rotary film unwinding device is designed to include a rotating frame, a rotary drive assembly and a film unwinding assembly. The rotary drive assembly drives the rotating frame to rotate around the battery cell, while the first protective film on the film unwinding assembly can be driven to wrap around the battery cell. The rotating frame rotates around the battery cell once, and the first protective film just wraps around the circumference of the battery cell. The structure is ingenious, and the first protective film can completely cover the circumference of the battery cell.

[0019] In some embodiments of the present application, the mounting frame includes two first brackets and two mounting shafts, the two first brackets are arranged opposite to each other along a first direction, the first direction intersects with the arrangement direction of the rotating film placing device to the first clamping device, the two mounting shafts are installed one-to-one on the two first brackets, and the two ends of the rotating frame along the first direction are connected one-to-one to the two mounting shafts, and the rotating frame is configured to rotate around the axis of the mounting shaft.

[0020] By adopting the above technical solution, the installation of the rotating frame is achieved by installing the shaft, thereby improving the stability of the rotating frame during rotation.

[0021] In some embodiments of the present application, the rotation drive assembly includes a first drive member, a transmission gear set and a transmission ring gear, the first drive member and the transmission gear set are both connected to one of the first brackets, the transmission ring gear is sleeved on the mounting shaft and can rotate around the axis of the mounting shaft, the first drive member, the transmission gear set and the transmission ring gear are sequentially connected in transmission, and the transmission ring gear is connected to the rotating frame and rotates synchronously.

[0022] Using the above technical solution, the rotary drive assembly is designed to include a first drive member, a transmission gear set and a transmission ring gear. The first drive member and the transmission gear set are used to drive the transmission ring gear to rotate around the mounting axis, while driving the rotating frame to rotate. The transmission is smooth and the speed can be adjusted.

[0023] In some embodiments of the present application, the first clamping device is fixedly connected to the two mounting shafts.

[0024] By adopting the above technical solution, the first clamping device is fixedly mounted on the mounting shaft, and there is no need to configure a separate mounting base for the first clamping device, thereby simplifying the equipment structure.

[0025] In some embodiments of the present application, the film unwinding assembly includes an unwinding mechanism and a flattening mechanism, both of which are installed on the rotating frame, and the flattening mechanism is located between the unwinding mechanism and the first clamping device. The unwinding mechanism is used to unwind the first protective film, and the flattening mechanism is used to receive the first protective film released by the unwinding mechanism and to flatten the first protective film.

[0026] By adopting the above technical solution, the film unwinding assembly is designed to include an unwinding mechanism and a flattening mechanism. The flattening mechanism can flatten the first protective film unwound by the unwinding mechanism to improve the flatness of the first protective film covering the battery cell.

[0027] In some embodiments of the present application, the rotary film placing device further includes a cutting assembly, which is connected to the leveling mechanism and is used to cut the first protective film leveled by the leveling mechanism.

[0028] By adopting the above technical solution, the rotary film unwinding device is designed to further include a cutting assembly. After the first protective film is wrapped around the battery cell for one circle, the cutting assembly is used to conveniently cut the first protective film.

[0029] In some embodiments of the present application, the battery film packaging equipment also includes a control device and a rotation angle detection device, the rotation angle detection device is connected to the mounting frame and is used to detect the rotation angle of the rotating frame, the control device is respectively communicated with the angle detection device, the rotation drive assembly and the cutting assembly, and the control device is configured to control the actions of the rotation drive assembly and the cutting assembly based on the detected rotation angle of the rotating frame.

[0030] By adopting the above technical solution, the battery film coating equipment is designed to also include a control device and a rotation angle detection device. The control device controls the action of the rotary drive assembly and the cutting assembly through the rotation angle of the rotating frame, thereby reducing the possibility of excessive or incomplete rotation of the rotating frame. At the same time, the first protective film can be automatically cut after the rotating frame rotates one circle and the first protective film just covers the circumference of the battery cell for one circle.

[0031] In some embodiments of the present application, the first coating unit further includes a first body and a first moving device installed on the first body, the mounting frame is connected to the first moving device, and the first moving device is used to drive the mounting frame to move toward or away from the second coating unit.

[0032] By adopting the above technical solution, the first moving device is utilized to conveniently drive the mounting frame and the first clamping device and the rotating film placing device thereon to move closer to or away from the second laminating unit.

[0033] In some embodiments of the present application, the first moving device includes a second driving member and a linear reciprocating motion assembly, the second driving member and the linear reciprocating motion assembly are transmission-connected and both are installed on the first body, the mounting frame is installed on the linear reciprocating motion assembly, and the linear reciprocating motion mechanism is configured to drive the mounting frame to move toward or away from the second coating unit under the drive of the second driving member.

[0034] By adopting the above technical solution, the first moving device is designed to include a second driving member and a linear reciprocating motion assembly, and the reciprocating motion of the first linear reciprocating motion mechanism is used to drive the mounting frame to move, so that the mounting frame can be moved closer to or away from the second coating unit.

[0035] In some embodiments of the present application, the linear reciprocating motion assembly includes a screw and a slider connected to the screw, the screw is rotatably installed on the first body around its own axis, and is transmission-connected to the second driving member, the mounting frame is installed on the slider, and the slider drives the mounting frame to move toward or away from the second coating unit under the rotation of the screw.

[0036] By adopting the above technical solution, the screw slider structure is used to drive the installation frame to move, the transmission is stable, and the stability of the installation frame during movement is improved.

[0037] In some embodiments of the present application, the first moving device further includes a transmission mechanism, the number of the screw rods is two, and the second driving member is respectively connected to the two screw rods through the transmission mechanism.

[0038] By adopting the above technical solution, two linear reciprocating motion components are used to drive the installation frame to move, thereby improving the stability of the installation and movement of the installation frame. At the same time, the two linear reciprocating motion components are connected by a transmission mechanism, and a second driving member can simultaneously drive the two linear reciprocating motion components to move, thereby simplifying the structure.

[0039] In some embodiments of the present application, the transmission mechanism includes a worm and two worm wheels, one end of the worm is connected to the second driving member and rotates under the drive of the second driving member, the other end of the worm is respectively connected to the two worm wheels, and the two worm wheels are coaxially connected to the ends of the two screws away from the second coating unit.

[0040] By adopting the above technical solution, the worm and the worm wheel are used to realize the transmission of the second driving member and the two linear reciprocating motion components, and the transmission is smooth and the structure is simple.

[0041] In some embodiments of the present application, the battery film packaging equipment also includes a position detection device and a control device. The position detection device is installed on the first moving device and is used to detect the position information of the mounting bracket. The control device is respectively communicated with the position detection device and the second driving member. The control device controls the action of the second driving member based on the position information detected by the position detection device.

[0042] By adopting the above technical solution, the battery film coating equipment is designed to also include a position detection device and a control device. The control device controls the opening and closing of the second driving member according to the position information of the mounting frame, thereby reducing the possibility of the linear movement of the mounting frame exceeding the preset position.

[0043] In some embodiments of the present application, the position detection device includes two first opposing photoelectric switches and two second opposing photoelectric switches, the two first opposing photoelectric switches are installed at one end of the first movable device away from the second coating unit, and are arranged opposite to each other along a first direction, the two second opposing photoelectric switches are installed at one end of the first movable device close to the second coating unit, and are arranged opposite to each other along the first direction, the first direction intersects with the arrangement direction from the rotating film placing device to the first clamping device, and intersects with the moving direction of the mounting frame driven by the first movable device.

[0044] By adopting the above technical solution, when the mounting bracket reaches one end of the first movable device, the position of the mounting bracket is detected by using two first opposing photoelectric switches. When the mounting bracket reaches the other end of the first movable device, the position of the mounting bracket is detected by using two second opposing photoelectric switches. This can realize the detection of the mounting bracket at both ends of the moving stroke, and there is no need to detect the mounting bracket when it is between the two ends of the first movable device, thereby optimizing the detection method and detection structure.

[0045] In some embodiments of the present application, the second coating unit includes a second body and two end face coating devices installed on the second body, one of the two end face coating devices is used to install the second protective film on one of the end faces at opposite ends of the battery cell, and the other of the two end face coating devices is used to install the second protective film on the other end face at opposite ends of the battery cell.

[0046] By adopting the above technical solution, two end face film laminating devices are used to complete the laminating of the opposite ends of the battery cell, which has a simple structure and is easy to implement.

[0047] In some embodiments of the present application, the end face film laminating device includes a third telescopic member, a pushing member and a film mounting member, the telescopic end of the third telescopic member is connected to the pushing member, the pushing member is connected to the film mounting member, and the second protective film is installed on the side of the film mounting member facing away from the pushing member.

[0048] Using the above technical solution, the end face film mounting device is designed to include a third telescopic member, a pushing member and a film mounting member. The third telescopic member is used to drive the pushing member and the film mounting member to move, so as to facilitate the attachment of the second protective film on the film mounting member to the end face of the battery cell.

[0049] In some embodiments of the present application, the second body is provided with a first accommodating groove, and the two end face film laminating devices are installed in the first accommodating groove.

[0050] By adopting the above technical solution, the first accommodating groove is utilized to not only facilitate the installation of the end face film laminating device, but also to accommodate the battery cells, thereby improving the position stability of the battery cells during the film laminating process.

[0051] In some embodiments of the present application, the battery film encapsulation equipment further includes a heating unit for heating the battery cell, a heating unit for heating at least one of the first protective film and the second protective film.

[0052] By adopting the above technical solution and using the heating unit for heating, the connection stability between the first protective film and / or the second protective film and the battery cell can be improved.

[0053] In some embodiments of the present application, the battery coating device includes a second body, and the heating unit and the second coating unit are both installed on the second body.

[0054] By adopting the above technical solution, the heating unit and the second laminating unit are both installed on the second body, so that the heating unit and the second laminating unit are integrated into one body, making the device structure more compact.

[0055] In some embodiments of the present application, the second body is provided with a second receiving groove, and the heating unit is installed in the second receiving groove.

[0056] By adopting the above technical solution, the second body is provided with a second receiving groove, which facilitates the installation of the heating unit.

[0057] In some embodiments, the heating unit includes a heating element, a heat conductor, and a temperature detection element. The heat conductor is mounted on the heating element and used to heat the battery cell. The temperature detection element is connected to the heat conductor and used to detect the temperature of the heat conductor.

[0058] By adopting the above technical solution, the heating element and the heat conducting element are used to heat the battery cell, and the temperature of the heat conducting element is detected by the temperature detecting element, thereby reducing the possibility of the heat conducting element overheating and damaging the battery cell.

[0059] In some embodiments of the present application, the battery coating equipment further includes a transfer unit, which is used to transfer the battery cell after the first protective film is installed on the first coating unit to the second coating unit, and to transfer the battery cell after the second protective film is installed on the second coating unit to the heating unit.

[0060] By adopting the above technical solution, the battery coating equipment is designed to include a transfer unit, which drives the battery monomers to be transferred between the first coating unit, the second coating unit and the heating unit, thereby improving the coating and heating efficiency of the battery monomers.

[0061] In some embodiments of the present application, the transfer unit includes a third body, a second moving device, a lifting device and an adsorption device. The second moving device is installed on the third body. The lifting device is connected to the second moving device and moves between the first coating unit, the second coating unit and the heating unit under the drive of the second moving device. The adsorption device is installed on the lifting device and is lifted and lowered under the drive of the lifting device. The adsorption device is used to adsorb the battery cell.

[0062] Using the above technical solution, the transfer unit is designed to include a third body, a second moving device, a lifting device and an adsorption device. The second moving device and the lifting device can be used to enable the adsorption device to drive the battery cell to move in two degrees of freedom, thereby facilitating the transfer of the battery cell.

[0063] In some embodiments of the present application, the transfer unit further includes a second clamping device, which is installed on the adsorption device and is used to clamp the battery cell adsorbed by the adsorption device.

[0064] By adopting the above technical solution, the second clamping device is used to clamp the battery cell adsorbed by the adsorption device, thereby reducing the possibility of separation of the first protective film from the battery cell when the adsorption device adsorbs the first protective film on the surface of the battery cell.

[0065] In a second aspect, an embodiment of the present application provides a battery production system, including a battery encapsulation device as described in the above technical solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0067] Figure 1 A schematic structural diagram of a battery coating device provided in some embodiments of the present application;

[0068] Figure 2 A schematic structural diagram of a first coating unit of a battery coating device provided in some embodiments of the present application;

[0069] Figure 3 A schematic structural diagram of a mounting frame, a first clamping device, and a rotary film-unloading device for a battery film encapsulation device provided in some embodiments of the present application;

[0070] Figure 4 A schematic structural diagram of a first clamping assembly of a battery encapsulation device provided in some embodiments of the present application;

[0071] Figure 5 A schematic structural diagram of a rotary film unloading device for a battery film coating device provided in some embodiments of the present application;

[0072] Figure 6 An exploded view of a rotary film unwinding device for a battery film coating device provided in some embodiments of the present application;

[0073] Figure 7 A schematic structural diagram of a rotary drive assembly of a battery coating device provided in some embodiments of the present application;

[0074] Figure 8 A schematic diagram of the partial structure of the first coating unit of the battery coating equipment provided in some embodiments of the present application;

[0075] Figure 9 A schematic structural diagram of a second coating unit and a heating unit of a battery coating device provided in some embodiments of the present application;

[0076] Figure 10 A schematic structural diagram of a second heating assembly of a battery encapsulation device provided in some embodiments of the present application;

[0077] Figure 11 A schematic structural diagram of a transfer unit of a battery coating device provided in some embodiments of the present application;

[0078] Figure 12 A schematic structural diagram of the second clamping device of the battery encapsulation equipment provided in some embodiments of the present application.

[0079] The reference numerals of the specific embodiments are as follows:

[0080] 1000. Battery coating equipment;

[0081] 100. A first laminating unit;

[0082] 110. Mounting frame; 111. First bracket; 112. Mounting shaft; 113. Support frame;

[0083] 120, first clamping device; 121, first clamping assembly; 1211, supporting mechanism; 12111, first mounting member; 12112, first telescopic member; 12113, supporting member; 12113a, connecting portion; 12113b, supporting portion; 1212, pressing mechanism; 12121, second mounting member; 12122, second telescopic member; 12123, pressing member;

[0084] 130. Rotary film unwinding device; 131. Rotating frame; 1311. Frame body; 1312. Connecting ear; 132. Rotary drive assembly; 1321. First drive member; 1322. Transmission gear set; 13221. First gear; 13222. Second gear; 13223. Third gear; 13224. Gear shaft; 1323. Transmission ring gear; 133. Film unwinding assembly; 1331. Unwinding mechanism; 13311. Unwinding roller; 1332. Leveling mechanism; 13321. Mounting frame; 13322. Leveling roller; 134. Cutting assembly; 1341. Fourth telescopic member; 1342. Cutter;

[0085] 140. Rotation angle detection device;

[0086] 150. First Body;

[0087] 160. First moving device; 161. Second driving member; 162. Linear reciprocating motion assembly; 1621. Screw; 1622. Slider; 163. Transmission mechanism; 1631. Worm; 1632. Worm gear;

[0088] 170. Position detection device; 171. First photoelectric switch; 172. Second photoelectric switch;

[0089] 200, second laminating unit; 210, second housing; 211, first receiving tank; 212, second receiving tank; 220, end-face laminating device; 221, third telescopic member; 222, pushing member; 223, film mounting member;

[0090] 300, heating unit; 310, heat conducting member; 311, mounting slot; 320, heating member; 330, temperature detecting member;

[0091] 400, transfer unit; 410, third body; 420, second moving device; 430, lifting device; 431, second bracket; 432, fifth telescopic member; 433, guide member; 440, adsorption device; 441, negative pressure pump; 442, suction cup; 450, second clamping device; 451, second clamping assembly; 4511, third driving member; 4512, clamping claw;

[0092] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0093] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0094] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only 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 drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0095] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the 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.

[0096] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0097] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0098] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0099] The term "plurality" used in this application refers to two or more (including two).

[0100] Below, the embodiments of the present application are described in detail.

[0101] During the battery production process, the battery cells need to be coated. For example, square lithium battery cells are coated with a polymer material protective film to improve the insulation, chemical resistance and mechanical strength of the battery cells, thereby better protecting the active materials inside the battery cells.

[0102] When coating, related battery coating equipment can usually only coat the surface of one or both sides of the battery, and then the battery needs to be flipped over to coat the other surfaces. This is not only inconvenient to operate, but also has low coating efficiency. In addition, it is impossible to achieve rapid and close fitting between the battery cell and the protective film.

[0103] Therefore, how to improve the coating efficiency of battery cells and achieve rapid and close adhesion between battery cells and protective films is an important issue in battery production and processing.

[0104] In view of this, the present application provides a battery coating device, which clamps the two ends of the battery cell through the first clamping device of the first coating unit, and then uses the rotating film release device of the first coating unit to coat the circumference of the battery cell, and then uses the second coating unit to coat the two end faces of the battery cell. It can achieve rapid coating of the battery cell and improve the coating efficiency. After coating, the battery cell is heated by the heating unit, so as to achieve rapid and close fitting between the battery cell and the protective film.

[0105] The following is combined with Figure 1-12 The battery coating device 1000 provided in an embodiment of the present application is introduced.

[0106] Combined with attachment Figure 1 and attached Figure 2As shown, an embodiment of the present application provides a battery coating device 1000, including a first coating unit 100 and a second coating unit 200, the first coating unit 100 includes a mounting frame 110, a first clamping device 120 and a rotating film-releasing device 130, the first clamping device 120 is connected to the mounting frame 110, and is used to clamp at least one of the opposite ends of a battery cell (not shown in the figure), the rotating film-releasing device 130 is installed on the mounting frame 110, and is configured to be able to rotate around the first clamping device 120, the rotating film-releasing device 130 is used to wrap a first protective film (not shown in the figure) around the circumference between the opposite ends of the battery cell; the second coating unit 200 is used to attach a second protective film (not shown in the figure) to the end faces of the opposite ends of the battery cell.

[0107] The first coating unit 100 includes a mounting frame 110, a first clamping device 120 and a rotary film placing device 130. The mounting frame 110 serves as an installation base for the first clamping device 120 and the rotary film placing device 130. The structural form of the mounting frame 110 is not limited, as long as it can meet the installation requirements of the first clamping device 120 and the rotary film placing device 130. Optional implementation methods of the mounting frame 110 are given below.

[0108] The first clamping device 120 is used to clamp at least one of the two opposite ends of the battery cell. In some embodiments, the first clamping device 120 can clamp one end or both ends of the battery cell along the length direction.

[0109] The rotating film placing device 130 is rotatably connected to the mounting frame 110. The rotating film placing device 130 rotates around its own axis. The axial direction of the rotating film placing device 130 is parallel to the length direction of the battery cell on the first clamping device 120. In some embodiments, the axial direction of the rotating film placing device 130 and the length direction of the battery cell are both horizontal.

[0110] The first protective film released by the rotating film releasing device 130 can be connected to the surface of one side of the battery cell by bonding and / or hot melting. For example, the first protective film can be placed on the surface of the battery cell by a robotic arm (not shown in the figure) or a hot melting mechanism (not shown in the figure) that can clamp the first protective film and move it, thereby realizing the connection between the first protective film and the battery cell. The above-mentioned robotic arm or hot melting mechanism can be independent of the battery film encapsulation equipment 1000 of this embodiment, and can also be regarded as a part of the battery film encapsulation equipment 1000 of this embodiment.

[0111] When the first protective film is connected to the surface of the battery cell, as the rotating film unwinding device 130 rotates around the battery cell, the first protective film can be wrapped around the circumference between the opposite ends of the battery cell. Since the first protective film in this application has certain adhesive properties, it can be directly adhered to the battery cell, thereby achieving the wrapping of the circumference of the battery cell.

[0112] After the first protective film is applied, the battery cell is moved to the second coating unit 200 to coat both end faces with the second protective film. The second protective film is bonded to the end faces of the battery cell, thereby completing the coating of the battery cell.

[0113] The battery coating equipment 1000 provided in the present application utilizes a first coating unit 100 to coat the circumference of the battery cell except the end face with a first protective film, and then utilizes a second coating unit 200 to coat the two end faces of the battery cell with a second protective film. Compared with the related art which can only coat each surface of the battery cell one by one, the coating efficiency of the battery cell can be improved. Finally, heating is performed by the heating unit 300 described below, which can improve the connection stability between the first protective film and / or the second protective film and the battery cell respectively.

[0114] The battery cells mentioned in the embodiments of this application may be lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, and the embodiments of this application are not limited thereto. The battery cells may be cylindrical, flat, rectangular, or in other shapes, and the embodiments of this application are not limited thereto.

[0115] The battery cells mentioned in the embodiments of the present application may include an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator. The battery cells primarily rely on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to operate. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector. The positive electrode current collector includes a positive electrode coating region and a positive electrode tab connected to the positive electrode coating region. The positive electrode coating region is coated with the positive electrode active material layer, and the positive electrode tab is not coated with the positive electrode active material layer.

[0116] The battery cells described in the embodiments of the present application are suitable for use in batteries and electrical devices using the batteries, such as vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools.

[0117] Combined with attachment Figure 3As shown, in some examples, optionally, the mounting frame 110 includes two first brackets 111 arranged opposite to each other along a first direction X, the first direction X intersects with the arrangement direction of the rotating film placing device 130 to the first clamping device 120, and the first clamping device 120 includes two first clamping components 121, and the two first clamping components 121 are installed one-to-one on the two first brackets 111, and are used to clamp the opposite ends of the battery cells one-to-one.

[0118] The structure of the first bracket 111 is not limited. The two first brackets 111 are arranged opposite to each other along the first direction X. The first direction X is parallel to the length direction of the rotating film unwinding device 130 and also parallel to the length direction of the battery cell. In some embodiments, the first direction X is a horizontal direction.

[0119] Correspondingly, in this embodiment, the first clamping device 120 is designed to include two first clamping components 121, and the two first clamping components 121 are also arranged opposite to each other along the first direction X in the figure. One of the two first clamping components 121 is used to clamp one end of the battery cell in the length direction, and the other clamping component is used to clamp the other end of the battery cell in the length direction.

[0120] This embodiment utilizes two first brackets 111 to correspondingly install two first clamping assemblies 121, thereby improving the installation stability of the first clamping device 120. At the same time, the two first clamping assemblies 121 are utilized to clamp both ends of the battery cell. Compared with the method of clamping only one end of the battery cell, the position stability of the battery cell during the coating process can be improved.

[0121] The first clamping assembly 121 of this embodiment has various structural forms. In some embodiments, two first clamping assemblies 121 may respectively press the two ends of the battery cell, and then the two first clamping assemblies 121 may clamp the battery cell together.

[0122] In some embodiments, the two first clamping assemblies 121 may respectively adsorb the two ends of the battery cell, and then the two first clamping assemblies 121 adsorb the battery cell and then clamp the battery cell.

[0123] In some embodiments, each of the following first clamping components 121 can respectively clamp the end portions of the circumference of the battery cell. When the first clamping component 121 under this structure is wrapping the first protective film, the two ends of the first protective film along the first direction X will be directly attached to the first clamping component 121, but will not affect the adhesion of the first protective film as a whole to the battery cell. Moreover, before the second protective film is attached to the battery cell, the first protective film and the first clamping component 121 can be released by releasing the clamping of the first clamping component 121 and the battery cell.

[0124] In some embodiments, the mounting frame 110 further includes a support frame 113 , which is mounted on the two mounting shafts 112 and surrounds the internal rotating film placing device 130 , thereby protecting the rotating frame 131 of the rotating film placing device 130 during rotation.

[0125] Combined with attachment Figure 4 As shown, in some examples, optionally, the first clamping assembly 121 includes a supporting mechanism 1211 and a clamping mechanism 1212, the supporting mechanism 1211 is connected to the mounting frame 110, and the clamping mechanism 1212 is connected to the supporting mechanism 1211, and the supporting mechanism 1211 and the clamping mechanism 1212 are arranged relative to each other and cooperate with each other to clamp the end of the battery cell.

[0126] In some implementations, the circumference of the battery cell includes a first surface and a second surface opposite to each other. The first surface may be an upper surface of the battery cell, and the second surface may be a lower surface of the battery cell.

[0127] The supporting mechanism 1211 may be located below the pressing mechanism 1212 . The supporting mechanism 1211 is fixedly connected to the mounting frame 110 . For example, the supporting mechanism 1211 may be installed on the mounting shaft 112 on the mounting frame 110 .

[0128] When clamping the battery cell, the battery cell is first placed on the two supporting mechanisms 1211 for preliminary fixation. At this time, both ends of the first surface of the battery cell along the length direction are placed on the supporting mechanisms 1211 .

[0129] Then, the two ends of the second surface of the battery cell are pressed by the pressing mechanism 1212 to complete the clamping of the entire battery cell, thereby improving the stability of the clamped battery cell.

[0130] In some examples, optionally, the supporting mechanism 1211 includes a first mounting member 12111, a first telescopic member 12112 and a supporting member 12113, the first mounting member 12111 is connected to the first bracket 111, the first telescopic member 12112 is connected to the first mounting member 12111, the supporting member 12113 is connected to the first telescopic member 12112, and moves along the first direction X driven by the first telescopic member 12112.

[0131] The first mounting member 12111 may be a block member or a plate member, and the first telescopic member 12112 may be a telescopic member capable of linear reciprocating motion such as a cylinder, an electric cylinder, or a hydraulic cylinder. The telescopic direction of the first telescopic member 12112 is also along the first direction X.

[0132] The supporting member 12113 can be a plate-shaped member or a block-shaped member. The supporting member 12113 is connected to the movable end of the first telescopic member 12112. For example, when the first telescopic member 12112 is a cylinder, the supporting member 12113 is installed on the end of the piston rod of the cylinder away from the cylinder body through a mechanical fixed connection. The first telescopic member 12112 is used to drive the supporting member 12113 to move, which facilitates the adjustment of the distance between the two supporting members 12113. It is not only convenient to support and clamp the battery cell, but also can improve the universality of the first clamping device 120 for battery cells of different lengths.

[0133] In some embodiments, the number of the first telescopic members 12112 and the supporting members 12113 can be designed to be multiple (for example, two in the figure), and the multiple first telescopic members 12112 are connected to the multiple supporting members 12113 in a one-to-one correspondence. The first surface of the battery cell is supported by the multiple supporting members 12113, thereby improving the stability of the position of the battery cell when the battery cell is placed on the first clamping assembly 121 for initial fixation.

[0134] In some examples, optionally, the supporting member 12113 includes a connecting portion 12113a and a supporting portion 12113b connected at an angle, the connecting portion 12113a is used to connect to the first mounting member 12111, the clamping mechanism 1212 is installed on the connecting portion 12113a, and the supporting portion 12113b has a supporting surface parallel to the first direction X, and the supporting surface is used to support the battery cell.

[0135] The connecting portion 12113a and the supporting portion 12113b may be plate-shaped or block-shaped, etc., and their specific shapes are not listed in detail in this embodiment.

[0136] The connecting portion 12113a and the supporting portion 12113b can be integrally connected or integrally formed during processing. The angle between the connecting portion 12113a and the supporting portion 12113b means that the angle between the two is greater than 0° and less than or equal to 90°. In some embodiments, the connecting portion 12113a and the supporting portion 12113b are perpendicular to each other.

[0137] The connecting portion 12113a is not only used to connect the first telescopic member 12112, but also used to install the clamping mechanism 1212, and also used to clamp the end face of the limiting battery cell. It is multi-purpose and there is no need to configure an installation base for the clamping mechanism 1212 on the supporting mechanism 1211.

[0138] In some embodiments, the supporting surface may be the upper surface of the supporting portion 12113b in the figure.

[0139] In some examples, optionally, the clamping mechanism 1212 includes a second mounting member 12121, a second telescopic member 12122 and a clamping member 12123, the second mounting member 12121 is installed on the supporting mechanism 1211, the second telescopic member 12122 is installed on the second mounting member 12121, the clamping member 12123 is connected to the second telescopic member 12122, and is driven by the second telescopic member 12122 to approach or move away from the supporting surface.

[0140] In some embodiments, the second mounting member 12121 includes vertical mounting portions on both sides and a horizontal mounting portion connected between the two vertical mounting portions. The two vertical mounting portions and the horizontal mounting portion form an H-shaped mounting structure, thereby improving the installation stability of the second mounting member 12121.

[0141] The second telescopic member 12122 is installed on the vertical installation portion, and the installation method can be plug-in, clip-on, etc., which are not listed one by one in this embodiment.

[0142] The second telescopic member 12122 has the same or similar structure to the aforementioned first telescopic member 12112 . For example, the second telescopic member 12122 may also be a telescopic member structure such as a pneumatic cylinder, an electric cylinder, a hydraulic cylinder, or the like.

[0143] When the battery cells are compressed, the second telescopic member 12122 is used to drive the compression member 12123 to move, thereby facilitating adjustment of the distance between the compression member 12123 and the supporting surface and adapting to battery cells of different thicknesses.

[0144] Combined with attachment Figure 5 and attached Figure 6 As shown, in some examples, optionally, the rotary film unwinding device 130 includes a rotating frame 131, a rotary drive assembly 132 and a film unwinding assembly 133. The rotating frame 131 is connected to the mounting frame 110 in a manner of rotating around the first clamping device 120. The rotary drive assembly 132 is connected to the mounting frame 110 and is transmission-connected to the rotating frame 131 for driving the rotating frame 131 to rotate. The film unwinding assembly 133 is connected to the rotating frame 131 and is used to unwind the first protective film.

[0145] The rotating frame 131 is connected to the mounting frame 110 in a manner of rotating around the first clamping device 120. The rotation axis of the rotating frame 131 is parallel to the arrangement direction of the two first clamping assemblies 121 and also parallel to the length direction of the battery cell. In some embodiments, the rotation axis of the rotating frame 131 is the first direction X in the figure.

[0146] The rotation drive assembly 132 may be any structure that can output torque and drive the rotating frame 131 to rotate. Optional implementations of the rotation drive assembly 132 are given below.

[0147] The film releasing assembly 133 is used to release the first protective film. Since the battery cell is fixed and the free end of the first protective film connected to the battery cell is also fixed, the first protective film can be wrapped around the battery cell circumferentially during the rotation of the rotating frame 131.

[0148] In some embodiments, the rotating frame 131 includes a frame body 1311 and two connecting ears 1312 connected to the two ends of the frame body 1311 in the length direction to form a door-shaped structure. The two connecting ears 1312 are used to connect the two first brackets 111 and can rotate on the first bracket 111.

[0149] The film placing assembly 133 can be installed on the two connecting ears 1312. The film placing assembly 133 is located between the frame body 1311 and the battery cell, and rotates synchronously with the rotating frame 131. Since the position of the battery cell is fixed, when the free end of the rolled first protective film is bonded or hot-melted on the battery cell, the rotation of the film placing assembly 133 can make the first protective film wrapped around the circumference of the battery cell.

[0150] In this embodiment, the rotary film unwinding device 130 is designed to include a rotating frame 131, a rotating drive component 132 and a film unwinding component 133. The rotating drive component 132 drives the rotating frame 131 to rotate around the battery cell, while driving the first protective film on the film unwinding component 133 to wrap around the battery cell. The rotating frame 131 rotates around the battery cell once, and the first protective film just wraps around the circumference of the battery cell. The structure is ingenious, and the first protective film can completely cover the circumference of the battery cell.

[0151] Combined with the attachment again Figure 5 and 6 As shown, in some examples, optionally, the mounting frame 110 includes two first brackets 111 and two mounting shafts 112, the two first brackets 111 are arranged opposite to each other along the first direction X, the first direction X intersects with the arrangement direction of the rotating film placing device 130 to the first clamping device 120, the two mounting shafts 112 are installed one-to-one on the two first brackets 111, and the rotating frame 131 is connected to the two mounting shafts 112 at both ends along the first direction X, and the rotating frame 131 is configured to rotate around the axis of the mounting shaft 112.

[0152] The installation shaft 112 can be fixed to the first bracket 111 by mechanical connection methods such as welding and bolt connection, and the installation shaft 112 itself cannot rotate on the first bracket 111.

[0153] The two mounting shafts 112 are installed on the two first brackets 111 in a one-to-one correspondence, which means that one of the two mounting shafts 112 is installed on one of the two first brackets 111, and the other of the two mounting shafts 112 is installed on the other of the two first brackets 111. The same explanation applies to other "one-to-one correspondence" connection relationships in this application.

[0154] The rotating frame 131 is installed by two installation shafts 112 , so that both ends of the rotating frame 131 can be rotatably connected to the first bracket 111 , thereby improving the stability of the rotating frame 131 during rotation.

[0155] Combined with the attached drawings Figure 5-7 As shown, in some examples, optionally, the rotation drive assembly 132 includes a first drive member 1321, a transmission gear set 1322 and a transmission ring gear 1323, the first drive member 1321 and the transmission gear set 1322 are both connected to one of the first brackets 111, the transmission ring gear 1323 is sleeved on the mounting shaft 112 and can rotate around the axis of the mounting shaft 112, the first drive member 1321, the transmission gear set 1322 and the transmission ring gear 1323 are sequentially connected in transmission, and the transmission ring gear 1323 is connected to the rotating frame 131 and rotates synchronously.

[0156] The first driving member 1321 can be a structure that outputs torque, such as a motor, and the output shaft of the first driving member 1321 is in driving connection with the transmission gear set 1322 .

[0157] In some embodiments, the transmission gear set 1322 includes a first gear 13221, a gear shaft 13224, a second gear 13222 and a third gear 13223. The gear shaft 13224 is installed on the corresponding first bracket 111 and has a first end and a second end opposite to each other. The first end is located on the side of the first bracket 111 away from the adjacent first clamping component 121, and the second end is located on the side of the first bracket 111 close to the adjacent first clamping component 121.

[0158] The first gear 13221 is coaxially connected to the output shaft of the first driving member 1321, the second gear 13222 is installed at the first end, and the third gear 13223 is installed at the second end. The first gear 13221 and the second gear 13222 are meshed with each other, and the third gear 13223 and the transmission ring gear 1323 are meshed with each other. During transmission, the output shaft of the first driving member 1321 and the first gear 13221 rotate synchronously, driving the second gear 13222 and the third gear 13223 to rotate synchronously, and the third gear 13223 drives the transmission ring gear 1323 and the rotating frame 131 to rotate, which has the advantage of smooth transmission through gear transmission.

[0159] In some embodiments, the radial dimension of the first gear 13221 can be smaller than the radial dimensions of the second gear 13222 and the third gear 13223 (for example, the radial dimension of the first gear 13221 is half of the radial dimension of the second gear 13222 and the third gear 13223, respectively), and equal to the radial dimension of the transmission ring gear 1323, and the radial dimensions of the second gear 13222 and the third gear 13223 are equal, thereby achieving deceleration of the rotation of the first driving member 1321 through the transmission gear set 1322.

[0160] In some examples, optionally, the first clamping device 120 is fixedly connected to the two mounting shafts 112 .

[0161] When the first clamping device 120 includes two first clamping assemblies 121 , one of the two first clamping assemblies 121 is installed on one of the mounting shafts 112 , and the other of the two first clamping assemblies 121 is installed on the other mounting shaft 112 .

[0162] The mounting shaft 112 is not only used to mount the rotating frame 131 , but also used to mount the first clamping device 120 . Therefore, there is no need to configure a separate mounting base for the first clamping device 120 , thereby simplifying the equipment structure.

[0163] Combined with the attachment again Figure 6 As shown, in some examples, optionally, the film unwinding assembly 133 includes an unwinding mechanism 1331 and a flattening mechanism 1332, both of which are installed on the rotating frame 131, and the flattening mechanism 1332 is located between the unwinding mechanism 1331 and the first clamping device 120, the unwinding mechanism 1331 is used to unwind the first protective film, and the flattening mechanism 1332 is used to receive the first protective film released by the unwinding mechanism 1331 and to flatten the first protective film.

[0164] The unwinding mechanism 1331 may include an unwinding roller 13311 , and both ends of the unwinding roller 13311 are mounted on two connecting ears 1312 of the rotating frame 131 in a one-to-one correspondence, and can rotate on the connecting ears 1312 .

[0165] The first protective film is placed on the unwinding roller 13311 in the form of a roll. Since the free end of the rolled first protective film is connected to the battery cell clamped and fixed on the first clamping device 120, during the rotation of the rotating frame 131 and the unwinding roller 13311, the rotational force gives the rolled first protective film a certain pulling force to drive the unwinding roller 13311 to rotate, thereby realizing the unwinding of the first protective film.

[0166] The leveling mechanism 1332 is located between the unwinding mechanism 1331 and the first clamping device 120. The leveling mechanism 1332 includes a mounting frame 13321 and two leveling rollers 13322 located in the mounting frame 13321. The mounting frame 13321 can be installed on two connecting ears 1312. The two leveling rollers 13322 are connected to the mounting frame 13321 in a manner of rotating around their own axes, and a leveling gap is formed between the two leveling rollers 13322. When the rolled first protective film is unrolled, the first protective film is leveled through the leveling gap between the two leveling rollers 13322 to improve the flatness of the first protective film covering the battery cell.

[0167] In some examples, optionally, the rotary film placing device 130 further includes a cutting component 134 , which is connected to the flattening mechanism 1332 and is used to cut the first protective film flattened by the flattening mechanism 1332 .

[0168] The rotary film unwinding device 130 is designed to further include a cutting assembly 134 . After the first protective film is wrapped around the battery cell for one circle, the cutting assembly 134 is used to conveniently cut the first protective film.

[0169] The cutting assembly 134 can be installed on the above-mentioned installation frame 13321 , and the cutting assembly 134 is located between the installation frame 13321 and the first clamping device 120 .

[0170] In some embodiments, the cutting assembly 134 may include a fourth telescopic member 1341 and a cutter 1342 , and the fourth telescopic member 1341 is mounted on the mounting frame 13321 by a mechanical fixed connection.

[0171] The fourth telescopic member 1341 may include a telescopic structure such as a cylinder, an electric cylinder or a hydraulic cylinder. The number of the fourth telescopic member 1341 may be one or more. The telescopic end of the fourth telescopic member 1341 is connected to the cutter 1342 and is used to drive the cutter 1342 to cut the first protective film. After completing the wrapping of a battery cell, the first protective film is cut off so that the rolled first protective film can be used for the next wrapping operation.

[0172] Combined with the attachment again Figure 7 As shown, in some examples, optionally, the battery coating device 1000 further includes a control device (not shown in the figure) and a rotation angle detection device 140, the rotation angle detection device 140 is connected to the mounting frame 110, and is used to detect the rotation angle of the rotating frame 131, the control device is respectively communicated with the angle detection device, the rotation drive assembly 132 and the cutting assembly 134, and the control device is configured to control the actions of the rotation drive assembly 132 and the cutting assembly 134 based on the detected rotation angle of the rotating frame 131.

[0173] The control device may include a controller, which may include a PLC control circuit or an MCU control circuit, etc. The control device has the functions of receiving signals, performing data processing on the signals, and sending control instructions to the action device (such as the first driving member 1321).

[0174] The control device can be communicatively connected with the first driving member 1321 , the rotation angle detection device 140 and the cutting assembly 134 . The communicatively connected means that the two are connected via a wired circuit or a wireless signal.

[0175] The rotation angle detection device 140 may include a rotary encoder, which is installed on the gear shaft 13224. The rotation angle of the second gear 13222 is detected by the rotary encoder. The control device then processes the rotation angle detected by the rotary encoder to obtain the rotation angle of the rotating frame 131, thereby controlling the start and stop of the first driving member 1321.

[0176] The rotary encoder may include an encoding disk, a light-emitting diode, a photodiode, and a signal processing circuit (not shown in the figure). The light-emitting diode emits a light beam to illuminate the encoding disk. At this time, the gear shaft 13224 drives the encoding disk to rotate, so that the light beam passes through a series of transparent and opaque stripes or holes engraved on the encoding disk, forming a light and dark change, and a corresponding electrical signal is generated by the photodiode. Then, the internal signal processing circuit processes it and finally outputs a digital signal that meets the requirements. The converted and processed digital signal is transmitted to the control device, and the control device can finally obtain the rotation angle of the second gear 13222 and the rotating frame 131.

[0177] When the control device determines that the rotating frame 131 has rotated one circle, it sends a stop command to the first driving member 1321 and an action command to the fourth telescopic member 1341 to cut the first protective film. At this point, the first protective film is coated around one battery cell.

[0178] The control device controls the movement of the rotating drive assembly 132 and the cutting assembly 134 through the rotation angle of the rotating frame 131, thereby reducing the possibility of excessive or incomplete rotation of the rotating frame 131. At the same time, the first protective film can be automatically cut after the rotating frame 131 rotates one circle and the first protective film just covers the circumference of the battery cell.

[0179] Combined with attachment Figure 8 As shown, in some examples, optionally, the first coating unit 100 also includes a first body 150 and a first moving device 160 installed on the first body 150, the mounting frame 110 is connected to the first moving device 160, and the first moving device 160 is used to drive the mounting frame 110 to move toward or away from the second coating unit 200.

[0180] The first body 150 serves as an installation base for the first moving device 160 , the installation frame 110 and other structures. Its structural form is not limited. For example, it can be a frame structure or a machine structure as shown in the figure.

[0181] The first moving device 160 can be any device that can drive the mounting frame 110 to move horizontally toward or away from the second laminating unit 200, for example, it can be a transmission belt, or a linear motion structure such as a cylinder, which are not listed one by one in this embodiment.

[0182] The first moving device 160 is used to conveniently drive the mounting frame 110 and the first clamping device 120 and the rotating film placing device 130 thereon to approach or move away from the second coating unit 200. When the battery coating equipment 1000 of this embodiment also includes the following transfer unit 400, the first moving device 160 conveniently drives the mounting frame 110 and the battery cells thereon to approach the transfer unit 400 to facilitate the transfer unit 400 to receive the materials.

[0183] In some examples, optionally, the first moving device 160 includes a second driving member 161 and a linear reciprocating motion assembly 162, the second driving member 161 and the linear reciprocating motion assembly 162 are transmission-connected and are both installed on the first body 150, the mounting frame 110 is installed on the linear reciprocating motion assembly 162, and the linear reciprocating motion mechanism is configured to drive the mounting frame 110 to move toward or away from the second coating unit 200 under the drive of the second driving member 161.

[0184] Second drive member 161 may be a torque output structure such as a motor, and linear reciprocating motion assembly 162 may be understood as a structure that converts torque into linear motion. Alternatively, second drive member 161 may be a power output source such as a pneumatic or hydraulic source, and linear reciprocating motion assembly 162 may be a pneumatic or hydraulic cylinder.

[0185] The first moving device 160 is designed to include a second driving member 161 and a linear reciprocating motion assembly 162 . The reciprocating motion of the linear reciprocating motion assembly 162 is used to drive the mounting frame 110 to move, so that the mounting frame 110 can move closer to or farther from the second laminating unit 200 .

[0186] In some examples, optionally, the linear reciprocating motion assembly 162 includes a screw rod 1621 and a slider 1622 connected to the screw rod 1621. The screw rod 1621 is rotatably mounted on the first body 150 around its own axis and is in transmission connection with the second driving member 161. The mounting frame 110 is mounted on the slider 1622. The slider 1622 drives the mounting frame 110 to move toward or away from the second coating unit 200 under the rotation of the screw rod 1621.

[0187] The length direction of the screw rod 1621 is set along the second direction Y in the figure. The second direction Y is perpendicular to the first direction X, and both can be horizontal directions.

[0188] The slider 1622 is threadedly connected to the screw rod 1621. The above-mentioned first bracket 111 is installed above the slider 1622. The first bracket 111 limits the slider 1622 from rotating around the screw rod 1621, so that when the screw rod 1621 rotates, the slider 1622 can drive the bracket to move linearly.

[0189] The screw rod 1621 and the slider 1622 structure are used to drive the mounting frame 110 to move, and the transmission is stable, thereby improving the stability of the mounting frame 110 during the movement process.

[0190] In some examples, optionally, the linear reciprocating motion assembly 162 further includes a transmission mechanism 163 , the number of the screw rods 1621 is two, and the second driving member 161 is respectively connected to the two screw rods 1621 through the transmission mechanism 163 .

[0191] The transmission mechanism 163 is connected to the two screw rods 1621 respectively. The transmission mechanism 163 can be used to transmit the torque of the second driving member 161 to the two screw rods 1621, thereby simplifying the structure.

[0192] There are various structural forms of the transmission mechanism 163, such as a gear set (this embodiment is not shown in the figure) or the worm wheel 1632 and worm 1631 described below. Of course, when the transmission mechanism 163 includes a gear set, it can be connected to the second driving member 161 through an intermediate gear, and the other two gears on both sides of the intermediate gear are simultaneously connected to the two screw rods 1621. The directions of the wires of the two screw rods 1621 are opposite, so that when the two gears on both sides rotate in opposite directions under the drive of the intermediate gear, the two screw rods 1621 are driven to rotate in opposite directions, and at the same time, the two sliders 1622 can be driven to move linearly in one direction.

[0193] In some examples, optionally, the transmission mechanism 163 includes a worm 1631 and two worm wheels 1632, one end of the worm 1631 is connected to the second driving member 161 and rotates under the drive of the second driving member 161, and the other end of the worm 1631 is respectively connected to the two worm wheels 1632, and the two worm wheels 1632 are coaxially connected to the ends of the two screw rods 1621 away from the second coating unit 200.

[0194] The length direction of the worm 1631 is set along the first direction X in the figure, and the second driving member 161 is connected to one end of the worm 1631. When the worm 1631 rotates, the two worm wheels 1632 rotate synchronously, thereby driving the two screw rods 1621 to rotate synchronously, and then driving the two sliders 1622 and the mounting frame 110 thereon to move.

[0195] The present application utilizes a worm 1631 and a worm wheel 1632 to realize the transmission of the second driving member 161 and the two linear reciprocating motion components 162 , and the transmission is smooth and the structure is simple.

[0196] In some examples, optionally, the battery coating device 1000 also includes a position detection device 170 and a control device. The position detection device 170 is installed on the first moving device 160 and is used to detect the position information of the mounting frame 110. The control device is respectively communicated with the position detection device 170 and the second driving member 161. The control device controls the action of the second driving member 161 based on the position information detected by the position detection device 170.

[0197] In addition to the following photoelectric switch, the position detection device 170 can also be a distance sensor, a proximity sensor, or other structures. The position detection device 170 is used to detect the position information of the mounting bracket 110 .

[0198] The position detection device 170 is used to detect whether the mounting bracket 110 has reached the limit position of the moving stroke, for example, whether it is located at the two ends of the screw rod 1621.

[0199] The control device has been described above and will not be described in detail in this embodiment.

[0200] When the mounting bracket 110 reaches the limit position of the movement stroke, the control device turns off the second driving member 161 to reduce the possibility that the linear movement of the mounting bracket 110 exceeds the preset position.

[0201] In some examples, optionally, the position detection device 170 includes two first opposing photoelectric switches 171 and two second opposing photoelectric switches 172, the two first opposing photoelectric switches 171 are installed at one end of the first movable device 160 away from the second coating unit 200, and are arranged opposite to each other along the first direction X, and the two second opposing photoelectric switches 172 are installed at one end of the first movable device 160 close to the second coating unit 200, and are arranged opposite to each other along the first direction X, and the first direction X intersects with the arrangement direction of the rotating film placing device 130 to the first clamping device 120, and intersects with the moving direction of the mounting frame 110 driven by the first movable device 160.

[0202] The two first opposing photoelectric switches 171 are respectively provided with their own transmitters and receivers (not shown in the figure). An infrared light beam is emitted by the transmitter of one first opposing photoelectric switch 171, and the infrared light beam is received by the other opposing photoelectric switch. When the mounting bracket 110 reaches the first limit position, the receiver of the first opposing photoelectric switch 171 cannot receive the infrared light beam. At this time, the control device determines that the mounting bracket 110 has reached the first limit position (located at the end of the screw rod 1621 away from the second coating unit 200).

[0203] The working principles of the two first opposing photoelectric switches 171 are similar, and will not be described in detail in this embodiment.

[0204] When the mounting frame 110 reaches one end of the first moving device 160, the position of the mounting frame 110 is detected by using two first opposing photoelectric switches 171. When the mounting frame 110 reaches the other end of the first moving device 160, the position of the mounting frame 110 is detected by using two second opposing photoelectric switches 172. This can realize the detection of the mounting frame 110 at both ends of the moving range, and there is no need to detect the mounting frame 110 when it is between the two ends of the first moving device 160, thereby optimizing the detection method and detection structure.

[0205] Combined with attachment Figure 9 As shown, in some examples, optionally, the second coating unit 200 includes a second body 210 and two end face coating devices 220 installed on the second body 210, one of the two end face coating devices 220 is used to install the second protective film on one of the end faces at opposite ends of the battery cell, and the other of the two end face coating devices 220 is used to install the second protective film on the other end face at opposite ends of the battery cell.

[0206] The second body 210 may have a similar or different structure and shape to the aforementioned first body 150. For example, both may be box structures. The second body 210 mainly serves as the installation base of the second laminating unit 200. The present embodiment does not impose any restrictions on its structural form.

[0207] The two end surface film laminating devices 220 can be installed on the second body 210 in opposite directions along the first direction X in the figure, so that the second protective film can be installed on both ends of the battery cell.

[0208] The end face film laminating device 220 is mainly used to install the second protective film on the end face of the battery cell. The end face film laminating device 220 may include a robot, and the control device controls the robot to realize the installation of the second protective film. The end face film laminating device 220 may also include the following third telescopic member 221, pushing member 222 and film installation member 223, as long as the second protective film can be installed on one end face of the battery cell.

[0209] In some examples, optionally, the end face film laminating device 220 includes a third telescopic member 221, a pushing member 222 and a film mounting member 223, the telescopic end of the third telescopic member 221 is connected to the pushing member 222, the pushing member 222 is connected to the film mounting member 223, and a second protective film is installed on the side of the film mounting member 223 facing away from the pushing member 222.

[0210] The structure of the third telescopic member 221 may be the same as or similar to that of the aforementioned first telescopic member 12112 , second telescopic member 12122 , etc. For example, the third telescopic member 221 may be a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, etc.

[0211] The pushing member 222 is mainly used to connect the third telescopic member 221 and the membrane mounting member 223. The cross-sectional area of the pushing member 222 is much larger than the cross-sectional area of the telescopic end of the telescopic member, thereby evenly distributing the pressure of the second telescopic member 12122 to the membrane mounting member 223, reducing the stress concentration phenomenon of the membrane mounting member 223, which makes it difficult for the second protective film to be completely bonded to the end face of the battery cell.

[0212] When installing the second protective film, the third telescopic member 221 is used to drive the pushing member 222 and the film mounting member 223 to move, so as to facilitate attaching the second protective film on the film mounting member 223 to the end face of the battery cell.

[0213] In some examples, optionally, the second body 210 is provided with a first receiving groove 211 , and the two end surface film laminating devices 220 are installed in the same first receiving groove 211 .

[0214] The size of the first receiving groove 211 is greater than the length of the battery cell, and after the two end surface film laminating devices 220 are installed, the interval between the two end surface film laminating devices 220 along the first direction X also needs to be greater than or equal to the length of the battery cell.

[0215] The first receiving groove 211 not only facilitates the installation of the end face film laminating device 220 , but also can accommodate the battery cells, thereby improving the position stability of the battery cells during the film laminating process.

[0216] In some examples, optionally, the battery coating device 1000 includes a heating unit, wherein the heating unit 300 is used to heat at least one of the battery cell, the first protective film, and the second protective film.

[0217] After the second protective film is coated, the heating unit 300 is used to heat at least one of the battery cell, the first protective film and the second protective film to achieve further hot pressing after the protective film and the battery cell are bonded, thereby improving the stability of the connection between the protective film and the battery cell.

[0218] In some examples, optionally, the battery coating equipment 1000 includes a second body 210 , and the second coating unit 200 and the heating unit 300 are both installed in the second body 210 .

[0219] In some embodiments, the heating unit 300 may be used to heat at least one surface of the coated battery cell.

[0220] The heating unit 300 may be any heating structure capable of heating a battery cell, for example, it may include a heating wire, a heating plate, etc.

[0221] The heating unit 300 may heat the lower surface of the battery cell, or heat the lower surface and two side surfaces simultaneously, or heat the entire circumference of the battery cell.

[0222] The heating temperature of the heating unit 300 may be between 50 degrees Celsius and 80 degrees Celsius, and further, may be between 60 degrees Celsius and 70 degrees Celsius, so as to reduce the impact on the performance of the battery cells.

[0223] The second body 210 has been introduced above. In this embodiment, the heating unit 300 is also installed in the second body 210, so that the heating unit 300 and the second laminating unit 200 are integrated into one body, making the device structure more compact.

[0224] In some examples, optionally, the second body 210 is provided with a second receiving groove 212 , and the heating unit 300 is installed in the second receiving groove 212 .

[0225] The size of the second receiving groove 212 may be similar to that of the first receiving groove 211 , and there is a certain distance between them.

[0226] The second housing 210 is provided with a second receiving groove 212 to facilitate the installation of the heating unit 300 and also facilitate the positioning of the battery cell during heating.

[0227] In some embodiments, when a second heating component is provided in the second body 210 or the first receiving tank 211 , the second heating component is used to heat the first receiving tank 211 .

[0228] Combined with attachment Figure 10 As shown, in some examples, optionally, the heating unit 300 includes a heat conductor 310, a heating element 320 and a temperature detection element 330, the heat conductor 310 is installed on the heating element 320, and the temperature detection element 330 is connected to the heat conductor 310 and is used to detect the temperature of the heat conductor 310.

[0229] The heat conducting member 310 is mounted on the second body 210 . The heating member 320 is mounted on the lower surface of the heat conducting member 310 and is used to heat the heat conducting member 310 . The temperature detecting member 330 is connected to the heating member 320 to control the heating temperature of the heating member 320 .

[0230] The heat conducting member 310 may be a plate-shaped member made of a heat conducting material such as metal or ceramic, and the heating member 320 may be a heating plate or a heating wire.

[0231] The heat conducting member 310 is provided with an open mounting groove 311 , and the temperature detecting member 330 can be embedded in the mounting groove 311 , thereby improving the accuracy of temperature detection.

[0232] In some embodiments, the temperature detection element 330 and the heating element 320 can also be connected to the above-mentioned control device respectively. The control device controls the heating temperature of the heating element 320 based on the temperature of the heat conductor 310 detected by the temperature detection element 330, thereby reducing the possibility of the heat conductor 310 being damaged by excessive temperature.

[0233] After the battery cell is coated, the battery cell is placed on the heat conductor 310 for heating. The heat of the heating element 320 is transferred to the battery cell through the heat conductor 310, and then transferred to the first protective film and the second protective film, thereby realizing the hot pressing connection between the first protective film and the second protective film and the battery cell respectively, further improving the connection stability between the first protective film and the second protective film and the battery cell respectively.

[0234] Combined with attachment Figure 1 , Attachment Figure 11 and attached Figure 12 As shown, in some examples, optionally, the battery coating equipment 1000 also includes a transfer unit 400, which is used to transfer the battery cells after the first protective film is installed on the first coating unit 100 to the second coating unit 200, and to transfer the battery cells after the second protective film is installed on the second coating unit 200 to the heating unit 300.

[0235] The transport unit 400 may be any structure capable of transporting battery cells, such as a robotic arm.

[0236] The reason for configuring the transfer unit 400 is that the battery monomers need to flow between the first coating unit 100, the second coating unit 200 and the third coating unit. Therefore, this embodiment designs the battery coating equipment 1000 to include a transfer unit 400, and utilizes the transfer unit 400 to drive the battery monomers to be transferred between the first coating unit 100, the second coating unit 200 and the heating unit 300, thereby improving the coating and heating efficiency of the battery monomers.

[0237] In some examples, optionally, the transfer unit 400 includes a third body 410, a second moving device 420, a lifting device 430 and an adsorption device 440, the second moving device 420 is installed on the third body 410, the lifting device 430 is connected to the second moving device 420 and moves between the first coating unit 100, the second coating unit 200 and the heating unit 300 under the drive of the second moving device 420, the adsorption device 440 is installed on the lifting device 430 and is lifted and lowered under the drive of the lifting device 430, and the adsorption device 440 is used to adsorb battery cells.

[0238] In this embodiment, the first body 150 and the second body 210 may be mounted on one supporting member, and the third body 410 may be mounted on the first body 150 and / or the third body 410 .

[0239] In some embodiments, the third body 410 includes a vertical plate and a horizontal plate. The vertical plate is mounted on the first body 150 and / or the second body 210 . The horizontal plate is connected to the upper end of the vertical plate and is used to mount the second moving device 420 .

[0240] The second moving device 420 can be any device that can move along the second direction Y, such as a moving slider 1622, a moving trolley, etc., and can also be a telescopic part including a cylinder.

[0241] The second direction Y is the arrangement direction of the first body 150 to the second body 210 , is also the length direction of the screw rod 1621 , and is also the arrangement direction of the first receiving groove 211 to the second receiving groove 212 .

[0242] The lifting device 430 includes a second bracket 431, a fifth telescopic member 432 and a guide member 433. The upper end of the fifth telescopic member 432 is installed on the second bracket 431. The lower end of the fifth telescopic member 432 is connected to the adsorption device 440. The guide member 433 is installed on the second bracket 431, and the length direction extends along the third direction Z. The third direction Z can be a vertical direction. The adsorption device 440 is slidably connected to the guide member 433 so that when the adsorption device 440 slides driven by the lifting device 430, the guide member 433 can slide and guide the adsorption device 440.

[0243] The adsorption device 440 includes a negative pressure pump 441 and a suction cup 442. The negative pressure pump 441 is installed on the suction cup 442 and is connected to the inner cavity of the suction cup 442. The suction cup 442 is connected to the telescopic end of the fifth telescopic member 432 and is slidably connected to the guide member 433 along the third direction Z. Under the action of the negative pressure pump 441, the suction cup 442 generates negative pressure, thereby adsorbing the battery cell, so that the second moving device 420 and the lifting device 430 can drive the battery cell to move and lift.

[0244] In this embodiment, the transfer unit 400 is designed to include a third body 410, a second moving device 420, a lifting device 430 and an adsorption device 440. The second moving device 420 and the lifting device 430 can be used to enable the adsorption device 440 to drive the battery cell to move in two degrees of freedom, thereby facilitating the transfer of the battery cell.

[0245] In some examples, optionally, the transport unit 400 further includes a second clamping device 450 , which is mounted on the adsorption device 440 and is used to clamp the battery cell adsorbed by the adsorption device 440 .

[0246] The second clamping device 450 is used to clamp the battery cell adsorbed by the adsorption device 440 to reduce the possibility of separation of the first protective film from the battery cell when the adsorption device 440 adsorbs the first protective film on the surface of the battery cell.

[0247] The second clamping device 450 may include two second clamping components 451 arranged opposite to each other along the second direction Y. The second clamping component 451 includes a third driving member 4511 and a clamping jaw 4512. The third driving member 4511 is installed on the suction cup 442 and is used to drive the clamping jaw 4512 to rotate, so that the two clamping jaws 4512 are relatively close to or far away from each other, and adjust the angle of the clamping jaw 4512 on the suction cup 442.

[0248] 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.

[0249] Combined with attachment Figure 1-12As shown, an embodiment of the present application provides a battery coating device 1000, including a first coating unit 100 and a second coating unit 200. The first coating unit 100 includes a mounting frame 110, a first clamping device 120 and a rotating film-releasing device 130. The first clamping device 120 is connected to the mounting frame 110 and is used to clamp at least one of the opposite ends of the battery cell. The rotating film-releasing device 130 is installed on the mounting frame 110 and is configured to be able to rotate around the first clamping device 120. The rotating film-releasing device 130 is used to wrap a first protective film around the circumference between the opposite ends of the battery cell; the second coating unit 200 is used to attach a second protective film to the end faces of the opposite ends of the battery cell. The mounting frame 110 includes two first brackets 111 arranged opposite each other along a first direction X. The first direction X intersects the arrangement direction from the rotating film unwinding device 130 to the first clamping device 120. The first clamping device 120 includes two first clamping assemblies 121, which are mounted one-to-one on the two first brackets 111 and are used to clamp the opposite ends of the battery cells. The first clamping assemblies 121 include a supporting mechanism 1211 and a clamping mechanism 1212. The supporting mechanism 1211 is connected to the mounting frame 110, and the clamping mechanism 1212 is connected to the supporting mechanism 1211. The supporting mechanism 1211 and the clamping mechanism 1212 are spaced apart from each other and cooperate to clamp the ends of the battery cells. The supporting mechanism 1211 includes a first mounting member 12111, a first telescopic member 12112, and a supporting member 12113. The first mounting member 12111 is connected to the first bracket 111, the first telescopic member 12112 is connected to the first mounting member 12111, and the supporting member 12113 is connected to the first telescopic member 12112. Driven by the first telescopic member 12112, the supporting member 12113 moves along the first direction X. The supporting member 12113 includes a connecting portion 12113a and a supporting portion 12113b connected at an angle. The connecting portion 12113a is used to connect to the first mounting member 12111 and to mount the pressing mechanism 1212. The supporting portion 12113b has a supporting surface parallel to the first direction X. The pressing mechanism 1212 includes a second mounting member 12121, a second telescopic member 12122, and a pressing member 12123. The second mounting member 12121 is mounted on the supporting mechanism 1211, the second telescopic member 12122 is mounted on the second mounting member 12121, and the pressing member 12123 is connected to the second telescopic member 12122 and moves closer to or away from the supporting surface under the drive of the second telescopic member 12122. The rotary film unwinding device 130 includes a rotating frame 131, a rotary drive assembly 132, and a film unwinding assembly 133. The rotating frame 131 is connected to the mounting frame 110 in a manner that rotates around the first clamping device 120. The rotary drive assembly 132 is connected to the mounting frame 110 and is in transmission connection with the rotating frame 131 for driving the rotating frame 131 to rotate. The film unwinding assembly 133 is connected to the rotating frame 131 and is used to unwind the first protective film.The mounting frame 110 includes two first brackets 111 and two mounting shafts 112. The two first brackets 111 are arranged opposite each other along a first direction X, which intersects the arrangement direction of the rotating film placing device 130 to the first clamping device 120. The two mounting shafts 112 are mounted one-to-one on the two first brackets 111. The rotating frame 131 is connected to the two mounting shafts 112 at both ends along the first direction X. The rotating frame 131 is configured to rotate about the axis of the mounting shafts 112. The rotation drive assembly 132 includes a first driving member 1321, a transmission gear set 1322, and a transmission ring gear 1323. The first driving member 1321 and the transmission gear set 1322 are each connected to one of the first brackets 111. The transmission ring gear 1323 is sleeved on the mounting shaft 112 and can rotate about the axis of the mounting shaft 112. The first driving member 1321, the transmission gear set 1322, and the transmission ring gear 1323 are sequentially connected in a transmission manner. The transmission ring gear 1323 is connected to the rotating frame 131 and rotates synchronously. The first clamping device 120 is fixedly connected to the two mounting shafts 112. The film unwinding assembly 133 includes an unwinding mechanism 1331 and a flattening mechanism 1332. Both unwinding mechanism 1331 and flattening mechanism 1332 are mounted on the rotating frame 131. Flattening mechanism 1332 is located between unwinding mechanism 1331 and the first clamping device 120. Unwinding mechanism 1331 is used to unwind the first protective film, while flattening mechanism 1332 is used to receive and flatten the first protective film released by unwinding mechanism 1331. The rotary film unwinding device 130 also includes a cutting assembly 134, which is connected to flattening mechanism 1332 and is used to cut the first protective film after flattening mechanism 1332. The battery coating equipment 1000 also includes a control device and a rotation angle detection device 140. The rotation angle detection device 140 is connected to the mounting frame 110 and is used to detect the rotation angle of the rotating frame 131. The control device is respectively connected to the angle detection device, the rotation drive assembly 132, and the cutting assembly 134. The control device is configured to control the operation of the rotation drive assembly 132 and the cutting assembly 134 based on the detected rotation angle of the rotating frame 131. The first coating unit 100 also includes a first body 150 and a first moving device 160 mounted on the first body 150. The mounting frame 110 is connected to the first moving device 160, and the first moving device 160 is used to drive the mounting frame 110 to move toward or away from the second coating unit 200. The first moving device 160 includes a second driving member 161 and a linear reciprocating motion assembly 162. The second driving member 161 and the linear reciprocating motion assembly 162 are transmission-connected and are both installed on the first body 150. The mounting frame 110 is installed on the linear reciprocating motion assembly 162. The linear reciprocating motion mechanism is configured to drive the mounting frame 110 to move toward or away from the second coating unit 200 under the drive of the second driving member 161.The linear reciprocating motion assembly 162 includes a screw rod 1621 and a slider 1622 connected to the screw rod 1621. The screw rod 1621 is rotatably mounted on the first body 150 about its own axis and is in transmission connection with the second drive member 161. The mounting frame 110 is mounted on the slider 1622. The slider 1622 drives the mounting frame 110 toward or away from the second laminating unit 200 under the rotation of the screw rod 1621. The first moving device 160 also includes a transmission mechanism 163. There are two screw rods 1621, and the second drive member 161 is in transmission connection with each of the two screw rods 1621 through the transmission mechanism 163. The transmission mechanism 163 includes a worm 1631 and two worm gears 1632. One end of the worm 1631 is connected to the second drive member 161 and rotates under the drive of the second drive member 161. The other end of the worm 1631 is connected to the two worm gears 1632. The two worm gears 1632 are coaxially connected to the ends of the two lead screws 1621 facing away from the second coating unit 200. The battery coating equipment 1000 also includes a position detection device 170 and a control device. The position detection device 170 is mounted on the first moving device 160 and is used to detect the position information of the mounting frame 110. The control device is in communication with the position detection device 170 and the second drive member 161. The control device controls the movement of the second drive member 161 based on the position information detected by the position detection device 170. The position detection device 170 includes two first opposing photoelectric switches 171 and two second opposing photoelectric switches 172. The two first opposing photoelectric switches 171 are mounted on the end of the first movable device 160 facing away from the second laminating unit 200 and are arranged opposite each other along a first direction X. The two second opposing photoelectric switches 172 are mounted on the end of the first movable device 160 closer to the second laminating unit 200 and are arranged opposite each other along the first direction X. The first direction X intersects with the arrangement direction from the rotating film placement device 130 to the first clamping device 120 and intersects with the movement direction of the mounting frame 110 driven by the first movable device 160. The second laminating unit 200 includes a second body 210 and two end surface laminating devices 220 mounted on the second body 210. One of the two end surface laminating devices 220 is used to apply the second protective film to one of the opposing end surfaces of the battery cell, and the other of the two end surface laminating devices 220 is used to apply the second protective film to the other opposing end surface of the battery cell. The end-face film laminating device 220 includes a third telescopic member 221, a pusher 222, and a film mounting member 223. The telescopic end of the third telescopic member 221 is connected to the pusher 222, which is in turn connected to the film mounting member 223. A second protective film is mounted on the side of the film mounting member 223 facing away from the pusher 222. The second body 210 is provided with a first receiving slot 211, and the two end-face film laminating devices 220 are mounted within the first receiving slot 211.The battery coating device 1000 also includes a heating unit 300 for heating at least one of the battery cell, the first protective film, and the second protective film. The battery coating device 1000 includes a second body 210, and the heating unit 300 and the second coating unit 200 are both installed on the second body 210. The second body 210 is provided with a second receiving groove 212, and the heating unit 300 is installed in the second receiving groove 212. The heating unit 300 includes a heating element 320, a heat conductive element 310, and a temperature detection element 330. The heat conductive element 310 is installed on the heating element 320 and is used to heat the battery cell. The temperature detection element 330 is connected to the heat conductive element 310 and is used to detect the temperature of the heat conductive element 310. The battery coating equipment 1000 also includes a transfer unit 400, which is used to transfer the battery monomer after the first protective film is installed on the first coating unit 100 to the second coating unit 200, and to transfer the battery monomer after the second protective film is installed on the second coating unit 200 to the heating unit 300. The transfer unit 400 includes a third body 410, a second moving device 420, a lifting device 430 and an adsorption device 440. The second moving device 420 is installed on the third body 410, the lifting device 430 is connected to the second moving device 420 and moves between the first coating unit 100, the second coating unit 200 and the heating unit 300 under the drive of the second moving device 420. The adsorption device 440 is installed on the lifting device 430 and is lifted and lowered under the drive of the lifting device 430. The adsorption device 440 is used to adsorb battery monomers. The transfer unit 400 further includes a second clamping device 450 , which is mounted on the adsorption device 440 and is used to clamp the battery cell adsorbed by the adsorption device 440 .

[0250] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0251] In a second aspect, an embodiment of the present application provides a battery production system, which includes the above-mentioned battery coating device 1000.

[0252] 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 of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery coating device, characterized in that: include: a first film coating unit comprising a mounting frame, a first clamping device, and a rotary film-releasing device, wherein the first clamping device is connected to the mounting frame and is used to clamp at least one of the opposite ends of the battery cell; the rotary film-releasing device is mounted on the mounting frame and is configured to rotate around the first clamping device, and the rotary film-releasing device is used to wrap a first protective film around the circumference between the opposite ends of the battery cell; as well as The second film covering unit is used to attach a second protective film to the end surfaces at two opposite ends of the battery cell.

2. The battery film coating device according to claim 1, characterized in that: The mounting frame includes two first brackets arranged opposite to each other along a first direction, the first direction intersects with the arrangement direction of the rotating film placing device to the first clamping device, the first clamping device includes two first clamping components, the two first clamping components are installed on the two first brackets in a one-to-one correspondence, and are used to clamp the opposite ends of the battery cells in a one-to-one correspondence.

3. The battery film encapsulation equipment according to claim 2, characterized in that: The first clamping assembly includes a supporting mechanism and a pressing mechanism. The supporting mechanism is connected to the mounting frame, and the pressing mechanism is connected to the supporting mechanism. The supporting mechanism and the pressing mechanism are arranged relative to each other and cooperate with each other to clamp the end of the battery cell.

4. The battery film encapsulation equipment according to claim 3, characterized in that: The supporting mechanism includes a first mounting member, a first telescopic member and a supporting member, the first mounting member is connected to the first bracket, the first telescopic member is connected to the first mounting member, the supporting member is connected to the first telescopic member, and moves along the first direction driven by the first telescopic member.

5. The battery film encapsulation device according to claim 4, characterized in that: The supporting member includes a connecting portion and a supporting portion connected at an angle, the connecting portion is connected to the first mounting member, the pressing mechanism is installed on the connecting portion, and the supporting portion has a supporting surface parallel to the first direction, and the supporting surface is used to support the battery cell.

6. The battery film encapsulation equipment according to claim 5, characterized in that: The clamping mechanism includes a second mounting member, a second telescopic member and a clamping member. The second mounting member is mounted on the supporting mechanism, the second telescopic member is mounted on the second mounting member, and the clamping member is connected to the second telescopic member and is moved closer to or away from the supporting surface under the drive of the second telescopic member.

7. The battery film coating device according to claim 1, characterized in that: The rotary film unwinding device includes a rotating frame, a rotary drive assembly and a film unwinding assembly. The rotating frame is connected to the mounting frame in a manner of rotating around the first clamping device. The rotary drive assembly is connected to the mounting frame and is transmission-connected to the rotating frame for driving the rotating frame to rotate. The film unwinding assembly is connected to the rotating frame and is used to unwind the first protective film.

8. The battery film coating device according to claim 7, characterized in that: The mounting frame includes two first brackets and two mounting shafts, the two first brackets are arranged opposite to each other along a first direction, the first direction intersects with the arrangement direction of the rotating film placing device to the first clamping device, the two mounting shafts are installed on the two first brackets one by one, and the two ends of the rotating frame along the first direction are connected to the two mounting shafts one by one, and the rotating frame is configured to rotate around the axis of the mounting shaft.

9. The battery film coating device according to claim 8, characterized in that: The rotary drive assembly includes a first drive member, a transmission gear set and a transmission ring gear. The first drive member and the transmission gear set are both connected to one of the first brackets. The transmission ring gear is sleeved on the mounting shaft and can rotate around the axis of the mounting shaft. The first drive member, the transmission gear set and the transmission ring gear are sequentially connected in transmission. The transmission ring gear is connected to the rotating frame and rotates synchronously.

10. The battery film encapsulation device according to claim 8, characterized in that: The first clamping device is fixedly connected to the two mounting shafts.

11. The battery film encapsulation device according to claim 7, characterized in that: The film unwinding assembly includes an unwinding mechanism and a flattening mechanism, both of which are installed on the rotating frame. The flattening mechanism is located between the unwinding mechanism and the first clamping device. The unwinding mechanism is used to unwind the first protective film, and the flattening mechanism is used to receive the first protective film released by the unwinding mechanism and to flatten the first protective film.

12. The battery film encapsulation device according to claim 11, characterized in that: The rotary film placing device further includes a cutting assembly, which is connected to the leveling mechanism and is used to cut the first protective film leveled by the leveling mechanism.

13. The battery film encapsulation device according to claim 12, characterized in that: The battery film packaging equipment also includes a control device and a rotation angle detection device. The rotation angle detection device is connected to the mounting frame and is used to detect the rotation angle of the rotating frame. The control device is respectively communicated with the angle detection device, the rotation drive assembly and the cutting assembly. The control device is configured to control the actions of the rotation drive assembly and the cutting assembly based on the detected rotation angle of the rotating frame.

14. The battery film encapsulation device according to claim 1, characterized in that: The first laminating unit further includes a first body and a first moving device installed on the first body. The mounting frame is connected to the first moving device. The first moving device is used to drive the mounting frame to move toward or away from the second laminating unit.

15. The battery film encapsulation device according to claim 14, characterized in that: The first moving device includes a second driving member and a linear reciprocating motion component, the second driving member and the linear reciprocating motion component are transmission-connected and both are installed on the first body, the mounting frame is installed on the linear reciprocating motion component, and the linear reciprocating motion component is configured to drive the mounting frame to move toward or away from the second coating unit under the drive of the second driving member.

16. The battery film encapsulation device according to claim 15, characterized in that: The linear reciprocating motion assembly includes a screw and a slider connected to the screw. The screw is rotatably installed on the first body around its own axis and is transmission-connected to the second driving member. The mounting frame is installed on the slider. The slider drives the mounting frame to move toward or away from the second coating unit under the rotation of the screw.

17. The battery film encapsulation device according to claim 16, characterized in that: The first moving device further includes a transmission mechanism, the number of the screw rods is two, and the second driving member is respectively connected to the two screw rods through the transmission mechanism.

18. The battery film encapsulation device according to claim 17, characterized in that: The transmission mechanism includes a worm and two worm wheels. One end of the worm is connected to the second driving member and rotates under the drive of the second driving member. The other end of the worm is respectively connected to the two worm wheels. The two worm wheels are coaxially connected to the ends of the two screws away from the second coating unit.

19. The battery film encapsulation device according to claim 15, characterized in that: The battery film packaging equipment also includes a position detection device and a control device. The position detection device is installed on the first moving device and is used to detect the position information of the mounting bracket. The control device is respectively communicated with the position detection device and the second driving member. The control device controls the action of the second driving member based on the position information detected by the position detection device.

20. The battery film encapsulation device according to claim 19, characterized in that: The position detection device includes two first opposing photoelectric switches and two second opposing photoelectric switches. The two first opposing photoelectric switches are installed at one end of the first movable device away from the second coating unit and are arranged opposite to each other along a first direction. The two second opposing photoelectric switches are installed at one end of the first movable device close to the second coating unit and are arranged opposite to each other along the first direction. The first direction intersects with the arrangement direction from the rotary film placing device to the first clamping device, and intersects with the moving direction of the mounting frame driven by the first movable device.

21. The battery film encapsulation device according to claim 1, characterized in that: The second coating unit includes a second body and two end face coating devices installed on the second body, one of the two end face coating devices is used to install the second protective film on one of the end faces at opposite ends of the battery cell, and the other of the two end face coating devices is used to install the second protective film on the other end face at opposite ends of the battery cell.

22. The battery film encapsulation device according to claim 21, characterized in that: The end face film laminating device includes a third telescopic member, a pushing member and a film mounting member. The telescopic end of the third telescopic member is connected to the pushing member, the pushing member is connected to the film mounting member, and the second protective film is installed on the side of the film mounting member away from the pushing member.

23. The battery film encapsulation device according to claim 21, characterized in that: The second body is provided with a first accommodating groove, and the two end face film laminating devices are installed in the same first accommodating groove.

24. The battery film encapsulation device according to any one of claims 1 to 23, characterized in that: The battery encapsulation equipment further includes a heating unit for heating the battery cells.

25. The battery film encapsulation device according to claim 24, characterized in that: The battery coating equipment includes a second body, and the heating unit and the second coating unit are both installed on the second body.

26. The battery film encapsulation device according to claim 25, characterized in that: The second body is provided with a second accommodating groove, and the heating unit is installed in the second accommodating groove.

27. The battery film encapsulation device according to claim 26, characterized in that: The heating unit includes a heating element, a heat conducting element, and a temperature detecting element. The heat conducting element is mounted on the heating element and is used to heat the battery cell. The temperature detecting element is connected to the heat conducting element and is used to detect the temperature of the heat conducting element.

28. The battery film encapsulation device according to claim 24, characterized in that: The battery coating equipment also includes a transfer unit, which is used to transfer the battery cell after the first protective film is installed on the first coating unit to the second coating unit, and to transfer the battery cell after the second protective film is installed on the second coating unit to the heating unit.

29. The battery film encapsulation device according to claim 28, characterized in that: The transfer unit includes a third body, a second moving device, a lifting device and an adsorption device. The second moving device is installed on the third body. The lifting device is connected to the second moving device and moves between the first coating unit, the second coating unit and the heating unit under the drive of the second moving device. The adsorption device is installed on the lifting device and is lifted and lowered under the drive of the lifting device. The adsorption device is used to adsorb the battery cell.

30. The battery film encapsulation device according to claim 29, characterized in that: The transfer unit further includes a second clamping device, which is mounted on the adsorption device and is used to clamp the battery cell adsorbed by the adsorption device.

31. A battery production system, characterized in that: Comprising the battery packaging device as described in any one of claims 1-30.

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