Film wrapping device and film wrapping method for battery cells, and battery apparatus production system

Abstract

The present application provides a film wrapping device and film wrapping method for battery cells, and a battery apparatus production system. In the film wrapping device, a conveying apparatus comprises a conveying mechanism and a plurality of carriers, the plurality of carriers are provided on the conveying mechanism, and the conveying mechanism cyclically conveys the carriers for carrying battery cells; and a plurality of film wrapping apparatuses are provided in the conveying direction of the carriers, and in each film wrapping apparatus, a film wrapping assembly is used for wrapping an insulating film on the surface of a casing of a battery cell, and a transfer assembly is used for transferring the battery cell between the film wrapping assembly and a carrier. Because the plurality of film wrapping apparatuses are arranged in the conveying direction of the carriers to wrap insulating films on the surfaces of casings of the battery cells, the battery cells can be provided to the plurality of film wrapping apparatuses by means of one conveying apparatus, which facilitates reducing the number of the conveying apparatuses arranged, reduces the space occupied by the film wrapping device for the battery cells, and facilitates miniaturization of the battery device production system.

Description

Battery cell coating equipment and methods and battery assembly production system Cross-references to related applications

[0001] This application claims priority to Chinese Patent Application No. 202510100014.9, filed on January 22, 2025, entitled “Coating apparatus and method for battery cells and battery device production system”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery manufacturing technology, and in particular to a coating equipment and method for battery cells, as well as a battery device manufacturing system. Background Technology

[0003] Battery devices have advantages such as high specific energy and high power density, and are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships and power tools.

[0004] As the application fields of battery devices continue to expand, the supply of battery devices is also increasing, leading to greater attention being paid to battery device production equipment. How to reduce the space occupied by battery device production equipment has begun to attract the attention of those skilled in the art. Summary of the Invention

[0005] In view of the above problems, this application provides a coating equipment and method for battery cells and a battery device production system. The coating equipment for battery cells occupies less space, which is beneficial to the miniaturization of the battery device production system.

[0006] In a first aspect, some embodiments of this application provide a coating device for a battery cell. The coating device for a battery cell includes a conveying device and a plurality of coating devices. The conveying device includes a conveying mechanism and a plurality of carriers. The plurality of carriers are disposed on the conveying mechanism, and the conveying mechanism cyclically conveys the carriers. The carriers are used to carry battery cells. The plurality of coating devices are disposed along the conveying direction of the carriers. The coating devices include a transfer assembly and a coating assembly. The coating assembly is used to cover the surface of the outer shell of the battery cell with an insulating film. The transfer assembly is used to transfer the battery cell between the coating assembly and the carriers.

[0007] In the above structure, since multiple coating devices are arranged along the conveying direction of the carrier to cover the surface of the battery cell shell with an insulating film, it is possible to provide battery cells to multiple coating devices through a single conveying device, instead of arranging multiple conveying devices to provide battery cells to multiple coating devices one by one. This helps to reduce the number of conveying devices, reduce the space occupied by the coating equipment of the battery cell, and facilitate the miniaturization of the battery production system.

[0008] According to some embodiments of this application, the battery cell coating equipment provides a conveying mechanism that drives the carrier component by magnetic force. This not only enables the conveying device to convey the carrier component quickly, but also makes the conveying position accurate, which helps to shorten the transfer positioning time, leaving more time for workstation operation. It also reduces the friction and collision between the carrier component and the conveying mechanism, which helps to reduce the wear of the carrier component.

[0009] According to some embodiments of this application, a battery cell coating apparatus includes a carrier with multiple support positions for placing battery cells. By providing multiple support positions in the carrier, multiple battery cells can be placed on the carrier, which increases the capacity of the conveying device to transport battery cells.

[0010] According to some embodiments of this application, the number of battery cell coating devices provided is equal to the number of bearing positions. Each coating device is configured in a one-to-one correspondence with a bearing position and is used to coat the battery cell in the corresponding bearing position. This allows multiple coating devices to coat multiple battery cells while the bearing member is waiting for the coating of one battery cell, thereby improving the working efficiency of the coating device.

[0011] According to some embodiments of this application, the battery cell coating apparatus includes a bearing position comprising a clamping assembly for clamping the battery cell. The clamping assembly secures the battery cell by clamping it within the bearing position, further reducing the possibility of the battery cell wobbling or shifting within the bearing, and thus minimizing the possibility of damage to the battery cell due to impacts.

[0012] According to some embodiments of this application, the battery cell coating apparatus further includes a detection device for detecting the insulating film covering the outer casing.

[0013] According to some embodiments of this application, a battery cell coating apparatus includes a conveying mechanism comprising a first conveying section and multiple second conveying sections. A coating device is used to coat the battery cells conveyed by the first conveying section. The multiple second conveying sections are spaced apart along a direction intersecting the conveying direction. A detection device is used to detect the insulating film in the battery cells conveyed by the second conveying sections. By providing multiple second conveying sections spaced apart along a direction intersecting the conveying direction, the parallel arrangement of the multiple second conveying sections enables parallel conveying of the carrier components, achieving flow separation. The detection device improves the detection efficiency of the coating apparatus by detecting the insulating film of the battery cells in the carrier components within the parallel conveying multiple second conveying sections.

[0014] According to some embodiments of this application, the number of detection devices in the battery cell coating equipment is equal to the number of second conveying sections. Each detection device is configured in a one-to-one correspondence with a second conveying section and is used to detect the battery cells in the corresponding second conveying section. Since each detection device detects a battery cell in one second conveying section, the detection time for that battery cell in one second conveying section is consumed. This allows multiple battery cells in different second conveying sections to be detected simultaneously within one detection time, improving the working efficiency of the coating equipment.

[0015] According to some embodiments of this application, a battery cell coating apparatus includes a conveying mechanism comprising a second connecting mechanism and a third connecting mechanism. The second connecting mechanism is disposed upstream of a plurality of second conveying sections along the conveying direction, and is used to transfer a carrier from a first conveying section to a second conveying section. The third connecting mechanism is disposed downstream of the plurality of second conveying sections along the conveying direction, and is used to transfer a carrier from a second conveying section to a first conveying section. By disposing the second connecting mechanism upstream of the plurality of second conveying sections along the conveying direction, a carrier conveyed from the first conveying section can be transferred to a second conveying section via the second connecting mechanism. By disposing the third connecting mechanism downstream of the plurality of second conveying sections along the conveying direction, a carrier conveyed from a second conveying section can be transferred to a first conveying section via the third connecting mechanism, so as to return to the first conveying section for recycling.

[0016] According to some embodiments of this application, a battery cell coating device includes multiple first conveying sections arranged sequentially along a conveying direction. A first connecting mechanism for transferring a carrier between two adjacent first conveying sections is provided. By providing the first connecting mechanism between two adjacent first conveying sections, the first connecting mechanism can transfer the carrier on the two adjacent first conveying sections according to the conveying direction, enabling the carrier to be smoothly transferred between the two adjacent first conveying sections.

[0017] According to some embodiments of this application, the number of first conveying sections is equal to the number of coating devices. The first conveying sections and coating devices are arranged in a one-to-one correspondence, so that each first conveying section is provided with a corresponding coating device. This allows each first conveying section to be provided with a coating device to coat the battery cells on the carrier, which is beneficial for dispersing multiple coating devices along the conveying direction.

[0018] According to some embodiments of this application, a battery cell coating device is provided with a buffer position at the upstream conveying mechanism of the coating device and / or a buffer position at the upstream conveying mechanism of the detection device. The buffer position is used to temporarily store the carrier, so that after the carrier is conveyed from the station with a shorter process time, it can wait for the station with a longer process time to finish its process before entering the station with a longer process time, thus playing a buffering role in the conveying of the carrier.

[0019] According to some embodiments of this application, a battery cell coating apparatus includes a testing device comprising a thickness measuring assembly and an insulation testing assembly, which are spaced apart along a conveying direction. The thickness measuring assembly is used to detect the thickness of the insulating film, and the insulation testing assembly is used to detect the insulation performance of the insulating film. By including the thickness measuring assembly and the insulation testing assembly in the testing device, the thickness and insulation performance of the insulating film on the battery cell can be tested, thereby enabling quality control of the insulating film and improving the quality of the obtained battery cells.

[0020] According to some embodiments of this application, the battery cell coating apparatus further includes an appearance inspection device, which is disposed upstream of the coating apparatus in the conveying direction to inspect the appearance of the battery cells. By disposing of the appearance inspection device upstream of the conveying direction of the coating apparatus to inspect the appearance of the battery cells before coating, battery cells that do not meet the appearance requirements can be selected out and temporarily not coated, ensuring that the appearance of all battery cells to be coated is qualified, which is beneficial to improving the coating quality of battery cells.

[0021] According to some embodiments of this application, the battery cell coating equipment further includes a cleaning device located upstream of the coating equipment in the conveying direction for removing dust from the battery cells, thereby improving the cleanliness of the outer surface of the battery cells and improving the quality of subsequent battery cell coating.

[0022] According to some embodiments of this application, a battery cell coating apparatus is provided, which further includes an insulating film cutting device disposed between the coating apparatus and the detection device.

[0023] According to some embodiments of this application, the battery cell coating equipment includes a transfer assembly comprising a coating loading mechanism and a coating unloading mechanism. The coating loading mechanism is used to transfer the battery cells on the carrier to the coating assembly, and the coating unloading mechanism is used to transfer the battery cells on the coating assembly to the carrier.

[0024] According to some embodiments of this application, the battery cell coating equipment further includes a feeding device and a discharging device. The feeding device is located upstream of the coating device in the conveying direction and is used to transfer the battery cell to the carrier. The discharging device is located downstream of the detection device in the conveying direction and is used to transfer the battery cell off the carrier.

[0025] Secondly, some embodiments of this application provide a method for coating a battery cell, the method comprising the following steps: loading a battery cell by placing the battery cell on a carrier of a conveying device located at a first position; transporting the battery cell by a conveying mechanism of the conveying device driving the carrier to move downstream; coating the battery cell with an insulating film by a coating device coating the surface of the battery cell's outer shell with an insulating film; unloading the battery cell by removing the battery cell coated with the insulating film from the carrier; and returning the carrier to its original position by a conveying mechanism that transports the carrier back to the first position.

[0026] In the above scheme, after the battery cells are wrapped and unloaded, the carrier holding the battery cells in the first position will return to the first position, so that the carrier moves cyclically under the drive of the conveying mechanism.

[0027] According to some embodiments of this application, a method for coating battery cells is provided, in which multiple coating devices are arranged sequentially along the conveying direction of the carrier. Multiple coating devices can simultaneously coat multiple battery cells with insulating film, which is beneficial for improving coating efficiency.

[0028] Thirdly, some embodiments of this application provide a battery device manufacturing system, which includes a coating device for battery cells as provided in any of the above technical solutions, the coating device being used to coat the battery cells.

[0029] The technical solutions provided by the embodiments of this disclosure have at least the following beneficial effects:

[0030] This application provides a coating apparatus for battery cells. The coating apparatus includes a conveying device and multiple coating units. The conveying device includes a conveying mechanism and multiple carriers. The carriers are disposed on the conveying mechanism and the conveying mechanism cyclically conveys the carriers, which are used to carry battery cells. The multiple coating units are arranged along the conveying direction of the carriers. Each coating unit includes a transfer assembly and a coating assembly. The coating assembly is used to coat the surface of the battery cell's outer shell with an insulating film, and the transfer assembly is used to transfer the battery cells between the coating assembly and the carriers. In this structure, because multiple coating units are arranged along the conveying direction of the carriers to coat the surface of the battery cell's outer shell with an insulating film, battery cells can be provided to multiple coating units through a single conveying device. This reduces the number of conveying devices required, decreases the space occupied by the battery cell coating equipment, and facilitates the miniaturization of the battery production system.

[0031] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0033] Figure 1 is a schematic diagram of the structure of a battery cell coating device provided in some embodiments of this application;

[0034] Figure 2 is a schematic diagram of the structure of the carrier in the battery cell coating device provided in some embodiments of this application;

[0035] Figure 3 is a schematic diagram of the conveying mechanism in the battery cell coating device provided in some embodiments of this application;

[0036] Figure 4 is a flowchart of a method for coating a battery cell according to some embodiments of this application.

[0037] In the picture:

[0038] 1. Conveying device; 11. Conveying mechanism; 111. First conveying section; 112. Second conveying section; 113. Second connecting mechanism; 114. Third connecting mechanism; 115. First connecting mechanism; 12. Carrier; 121. Carrier position; 122. Clamping assembly; 2. Coating device; 21. Transfer assembly; 211. Coating feeding mechanism; 212. Coating unloading mechanism; 22. Coating assembly; 3. Detection device; 31. Thickness measuring assembly; 32. Insulation testing assembly; 4. Appearance inspection device; 5. Cleaning device; 6. Insulation film cutting device; 7. Feeding device; 8. Unloading device; 10. Battery cell. Detailed Implementation

[0039] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0040] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0041] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0043] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0044] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] Battery devices possess advantages such as high energy density and high power density, and are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric cars, electric aircraft, electric ships, and power tools. As the application fields of battery devices continue to expand, the supply of battery devices is also constantly increasing, and how to improve the production volume of battery devices is receiving increasing attention from those skilled in the art.

[0046] The battery device mentioned in the embodiments of this application includes multiple battery modules, where a battery module refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity.

[0047] In the production of battery cells, an insulating film needs to be coated onto the surface of each cell. Various processing steps are required before and after coating, thus the coating equipment typically consists of a coating section and a measurement section. Because the coating process is complex, involves numerous operations, and requires manual, timed feeding, it presents an efficiency bottleneck. To improve production efficiency, a common solution is to increase the number of coating devices and correspondingly increase the number of transfer channels for battery cells, ensuring a one-to-one correspondence between the number of coating devices and transfer channels. However, this approach not only increases equipment investment but also enlarges the space occupied by the battery production equipment, making it unacceptable to most battery manufacturers.

[0048] To reduce the space occupied by battery cell coating equipment, some embodiments of this application provide a battery cell coating device. This device includes a conveying device and multiple coating units. The conveying device includes a conveying mechanism and multiple carriers. The carriers are disposed on the conveying mechanism and the conveying mechanism cyclically conveys the carriers, which carry battery cells. The multiple coating units are arranged along the conveying direction of the carriers. Each coating unit includes a transfer assembly and a coating assembly. The coating assembly is used to coat the surface of the battery cell's outer shell with an insulating film, and the transfer assembly is used to transfer the battery cells between the coating assembly and the carriers. In this structure, because multiple coating units are arranged along the conveying direction of the carriers to coat the surface of the battery cell's outer shell with an insulating film, battery cells can be provided to multiple coating units through a single conveying device. This reduces the number of conveying devices required, decreases the space occupied by the battery cell coating equipment, and facilitates the miniaturization of the battery production system.

[0049] The battery cell coating apparatus described in this application embodiment can be used to coat the surface of the battery cell casing with an insulating film.

[0050] The technical solutions for the battery cell coating equipment and battery device production system provided in the specific embodiments of this application will be further described below.

[0051] An embodiment of this application provides a coating device for a battery cell 10. Referring to FIG1, the coating device for the battery cell 10 includes a conveying device 1 and a plurality of coating devices 2. The conveying device 1 includes a conveying mechanism 11 and a plurality of carriers 12. The plurality of carriers 12 are disposed on the conveying mechanism 11, and the conveying mechanism 11 cyclically conveys the carriers 12. The carriers 12 are used to carry the battery cell 10. The plurality of coating devices 2 are arranged along the conveying direction of the carriers 12. The coating device 2 includes a transfer assembly 21 and a coating assembly 22. The coating assembly 22 is used to cover the surface of the outer shell of the battery cell 10 with an insulating film. The transfer assembly 21 is used to transfer the battery cell 10 between the coating assembly 22 and the carriers 12.

[0052] The conveying device 1 can be a device used to convey the battery cell 10 in the coating equipment of the battery cell 10. It can convey the battery cell 10 between various stations in the coating setup, so that the battery cell 10 can be transferred sequentially in each station and can be processed sequentially in each station.

[0053] The carrier 12 can be a component in the conveying device 1 used to carry the battery cells 10. By carrying the battery cells 10, it not only facilitates the transfer of the battery cells 10, but also protects the carried battery cells 10, reducing the possibility of damage to the battery cells 10 from impacts. The conveying mechanism 11 can be a mechanism used to convey the carrier 12. It can drive the carrier 12 to move, so as to realize the conveying of the battery cells 10 in the carrier 12.

[0054] The conveying mechanism 11 circulates the carrier 12, which means that the conveying mechanism 11 is arranged in a ring, so that it drives the carrier 12 to move circumferentially. This helps to reduce the space occupied by the transmission mechanism, and thus helps to reduce the space occupied by the coating equipment.

[0055] The coating device 2 can be a device for coating an insulating film onto the surface of the casing of a battery cell 10. By providing multiple coating devices 2, the coating equipment can simultaneously coat multiple battery cells 10 with insulating film, thus achieving high coating efficiency. The multiple coating devices 2 are arranged along the conveying direction of the carrier 12, which can be sequentially spaced along the conveying direction of the carrier 12. This allows the carrier 12 to pass through the multiple coating devices 2 sequentially under the drive of the transmission mechanism, enabling the multiple coating devices 2 to sequentially coat multiple battery cells 10 passing through the carrier 12, thereby improving the working efficiency of the coating equipment.

[0056] The coating assembly 22 can be an assembly mechanism for coating an insulating film onto the surface of the casing of the battery cell 10. The transfer assembly 21 can be an assembly mechanism for transferring the battery cell 10 between the coating assembly 22 and the carrier 12. The transfer assembly 21 can transfer the battery cell 10 on the carrier 12 to the coating assembly 22 for coating, or it can transfer the coated battery cell 10 on the coating assembly 22 to the carrier 12 so that the battery cell 10 can move downstream with the carrier 12 for other processing steps.

[0057] In the above structure, since multiple coating devices 2 are arranged along the conveying direction of the carrier 12 to coat the surface of the outer shell of the battery cell 10 with an insulating film, the battery cell 10 can be provided to multiple coating devices 2 through a single conveying device 1. This helps to reduce the number of conveying devices 1, reduce the space occupied by the coating equipment of the battery cell 10, and facilitate the miniaturization of the battery production system.

[0058] In some embodiments, the conveying mechanism 11 drives the carrier 12 by magnetic force.

[0059] The conveying mechanism 11, which drives the carrier 12 by magnetic force, can be described as using electromagnetic principles to achieve the cyclical transfer of multiple carriers 12. For example, the conveying mechanism 11 includes a control module, a magnetic conveying track, and a magnetic actuator mounted thereon. The carrier 12 is a magnetic carrier 12, which generates a magnetic force with the magnetic actuator. Under the control of the control module, the carrier 12 can move cyclically along the conveying direction according to a preset pattern under the action of the magnetic force. This not only makes the conveying device 1 transfer the carrier 12 quickly but also ensures high precision in the conveying position, which helps to shorten the transfer positioning time, allowing more time for workstation operations. Furthermore, it reduces friction and collision between the carrier 12 and the conveying mechanism 11, thus reducing wear on the carrier 12.

[0060] In some embodiments, referring to FIG2, the carrier 12 is provided with a plurality of carrier positions 121, which are used to place the battery cell 10.

[0061] The support position 121 refers to a portion provided on the support member 12 for placing the battery cell 10. It can position the battery cell 10, which helps reduce the possibility of the battery cell 10 swaying within the support member 12. For example, one support position 121 can support one battery cell 10, making it less likely for adjacent battery cells 10 to collide. In other embodiments, one support position 121 can support at least two battery cells 10.

[0062] By providing multiple support positions 121 in the support member 12, multiple battery cells 10 can be placed in the support member 12 through the multiple support positions 121 provided thereon, which helps to increase the ability of the transmission device 1 to transmit battery cells 10.

[0063] In some embodiments, the number of carrier positions 121 is equal to the number of coating devices 2, and the coating devices 2 are arranged in a one-to-one correspondence with the carrier positions 121 and are used to coat the battery cells 10 in the corresponding carrier positions 121.

[0064] By setting the number of bearing positions 121 to be equal to the number of coating devices 2, the coating devices 2 can be set in a one-to-one correspondence with the bearing positions 121, so that the coating devices 2 and the bearing positions 121 correspond one-to-one.

[0065] The coating device 2 is configured in a one-to-one correspondence with the carrier position 121. This means that each coating device 2 corresponds to a specific carrier position 121, and is used to coat the battery cell 10 in its corresponding specific carrier position 121. Since each coating device 2 coats one battery cell 10 in one carrier position 121, consuming the coating time of one battery cell 10, multiple coating devices 2 can coat multiple battery cells 10 while the carrier 12 waits for the coating time of one battery cell 10, thus improving the working efficiency of the coating equipment.

[0066] In some embodiments, the bearing position 121 includes a clamping component 122 for clamping the battery cell 10.

[0067] The clamping assembly 122 can be a component used to position the battery cell 10 in the carrier position 121. The clamping assembly 122 fixes the battery cell 10 by clamping it in the carrier position 121, which further reduces the possibility of the battery cell 10 shaking or shifting in the carrier 12, and helps to reduce the possibility of the battery cell 10 being damaged by impact.

[0068] For example, the clamping assembly 122 includes pairs of springs or rubber blocks spaced apart, with the battery cell 10 clamped between the pairs of springs or rubber blocks to position the battery cell 10 in the bearing position 121.

[0069] In some embodiments, the battery cell coating equipment further includes a detection device 3 for detecting the insulating film covering the casing.

[0070] The detection device 3 can be a device for detecting the insulating film on the battery cell 10. For example, the detection device 3 can be disposed downstream of the coating device 2 in the conveying direction, so that the insulating film on the coated battery cell 10 can be detected by the detection device 3.

[0071] In some embodiments, referring to FIG3, the conveying mechanism 11 includes a first conveying segment 111 and a plurality of second conveying segments 112. The coating device 2 is used to coat the battery cell 10 conveyed by the first conveying segment 111 with a coating. The plurality of second conveying segments 112 are arranged at intervals along a direction intersecting the conveying direction. The detection device 3 is used to detect the insulating film in the battery cell 10 conveyed by the second conveying segment 112.

[0072] The first conveying segment 111 and the second conveying segment 112 can be different structural segments within the conveying mechanism 11. The first conveying segment 111 and the second conveying segment 112 together form a ring-shaped conveying mechanism 11, enabling the carrier 12 to be conveyed cyclically. The first conveying segment 111 can be a structural segment equipped with a coating device 2, used to coat the battery cells 10 in the carrier 12 conveyed by the first conveying segment 111. The second conveying segment 112 can be a structural segment equipped with a detection device 3, used to detect the insulating film in the battery cells 10 in the carrier 12 conveyed by the second conveying segment 112.

[0073] By setting up multiple second conveying sections 112, which are spaced apart along a direction intersecting the conveying direction, the parallel arrangement of the multiple second conveying sections 112 enables parallel conveying of the carrier 12, thus achieving flow diversion. The detection device 3 improves the detection efficiency of the coating equipment by detecting the insulating film of the battery cell 10 in the carrier 12 of the parallel conveying multiple second conveying sections 112.

[0074] In some embodiments, the number of detection devices 3 is equal to the number of second transmission segments 112. The detection devices 3 are configured in a one-to-one correspondence with the second transmission segments 112 and are used to detect the battery cells 10 in the corresponding second transmission segment 112.

[0075] By setting the number of detection devices 3 to be equal to the number of the second transmission segment 112, the detection devices 3 are set in a one-to-one correspondence with the second transmission segment 112, so that the detection devices 3 can correspond one-to-one with the second transmission segment 112.

[0076] The detection devices 3 are configured in a one-to-one correspondence with the second conveyor sections 112. This means that each detection device 3 corresponds to a specific second conveyor section 112, and is used to detect the battery cells 10 on its corresponding specific second conveyor section 112. Since each detection device 3 detects the battery cells 10 in one second conveyor section 112, the detection time for one battery cell 10 in that second conveyor section 112 is consumed. This allows multiple battery cells 10 in different second conveyor sections 112 to be detected simultaneously within one detection time, improving the working efficiency of the coating equipment.

[0077] In some embodiments, the conveying mechanism 11 includes a second connecting mechanism 113 and a third connecting mechanism 114. The second connecting mechanism 113 is disposed upstream of a plurality of second conveying segments 112 along the conveying direction and is used to transfer the carrier 12 on the first conveying segment 111 to the second conveying segment 112. The third connecting mechanism 114 is disposed downstream of a plurality of second conveying segments 112 along the conveying direction and is used to transfer the carrier 12 on the second conveying segment 112 to the first conveying segment 111.

[0078] The second connecting mechanism 113 and the third connecting mechanism 114 can be mechanisms for transferring the carrier 12 between the first conveying segment 111 and the second conveying segment 112. By arranging the second connecting mechanism 113 upstream of the plurality of second conveying segments 112 along the conveying direction, the carrier 12 conveyed from the first conveying segment 111 can be transferred to the second conveying segment 112 through the second connecting mechanism 113.

[0079] For example, the second connecting mechanism 113 can transfer the carrier 12 transmitted from the first transmission segment 111 to the second transmission segment 112. This can be done by transferring the carrier 12 transmitted sequentially from the first transmission segment 111 to multiple second transmission segments 112 in sequence according to a preset pattern.

[0080] By setting the third connecting mechanism 114 downstream of the plurality of second conveying sections 112 along the conveying direction, the carrier 12 conveyed from the second conveying section 112 can be transferred to the first conveying section 111 through the third connecting mechanism 114, so as to return to the first conveying section 111 for circulation.

[0081] For example, the third connecting mechanism 114 can transfer the carrier 12 from the second transmission segment 112 to the first transmission segment 111. This can be done by transferring multiple carriers 12 from the second transmission segment 112 to the first transmission segment 111 in sequence according to a preset rule, so that the multiple carriers 12 from the second transmission segment 112 can return to the first transmission segment 111 again, so as to perform a cycle in sequence.

[0082] In some embodiments, a plurality of first conveying segments 111 are provided, and the plurality of first conveying segments 111 are arranged sequentially along the conveying direction. A first connecting mechanism 115 for transferring the carrier 12 between two adjacent first conveying segments 111 is provided.

[0083] By setting up multiple first conveyor segments 111 and arranging them sequentially along the conveying direction, it is beneficial to increase the length of the conveying mechanism 11, so that the conveying mechanism 11 can provide a sufficient number of workstations to provide a sufficient number of workstations for a large number of processes.

[0084] The first connecting mechanism 115 can be a mechanism for transferring the carrier 12 between two adjacent first conveying sections 111. By setting the first connecting mechanism 115 between two adjacent first conveying sections 111, the first connecting mechanism 115 can transfer the carrier 12 on the two adjacent first conveying sections 111 in the conveying direction, so that the carrier 12 can be smoothly transferred between the two adjacent first conveying sections 111.

[0085] In some embodiments, the number of first conveying segments 111 is equal to the number of coating devices 2, and the first conveying segments 111 and coating devices 2 are arranged in a one-to-one correspondence.

[0086] By setting the number of first conveying segments 111 to be equal to the number of coating devices 2, and setting the first conveying segments 111 to correspond one-to-one with the coating devices 2, each first conveying segment 111 is provided with a corresponding coating device 2, so that each first conveying segment 111 is provided with a coating device 2 to coat the battery cells 10 on the carrier 12, which is beneficial to disperse the multiple coating devices 2 along the conveying direction.

[0087] In some embodiments, a buffer position is provided at the conveying mechanism 11 upstream of the coating device 2 and / or a buffer position is provided at the conveying mechanism 11 upstream of the detection device 3, the buffer position being used to temporarily store the carrier 12.

[0088] The buffer position can be a blank station in the conveying mechanism 11 where the carrier 12 is set. The buffer position is used to temporarily store the carrier 12 sent from the upstream, so that the carrier 12 can wait for the appropriate time to be sent to the downstream station. It can be set between the station with a shorter process time and the station with a longer process time, so that after the carrier 12 is sent from the station with a shorter process time, it can wait for the station with a longer process time to finish its process before entering the station with a longer process time, thus playing a buffering role in the transmission of the carrier 12.

[0089] A buffer position is provided at the conveying mechanism 11 upstream of the coating device 2 and / or at the conveying mechanism 11 upstream of the detection device 3. This can be achieved by providing a buffer position only at the conveying mechanism 11 upstream of the coating device 2 to temporarily store the carrier 12 that is about to enter the station of the coating device 2; or by providing a buffer position only at the conveying mechanism 11 upstream of the detection device 3 to temporarily store the carrier 12 that is about to enter the station of the detection device 3; or by providing a buffer position at both the conveying mechanism 11 upstream of the coating device 2 and the conveying mechanism 11 upstream of the detection device 3 to temporarily store the carrier 12 that is about to enter the station of the detection device 3.

[0090] In some embodiments, the detection device 3 includes a thickness measurement assembly 31 and an insulation test assembly 32, which are spaced apart along the conveying direction. The thickness measurement assembly 31 is used to detect the thickness of the insulating film, and the insulation test assembly 32 is used to detect the insulation performance of the insulating film.

[0091] The thickness measurement assembly 31 can be an assembly mechanism for measuring the thickness of the insulating film. The insulation testing assembly 32 can be an assembly mechanism for testing the insulation performance of the insulating film. By including the thickness measurement assembly 31 and the insulation testing assembly 32 in the detection device 3, the thickness and insulation performance of the insulating film on the battery cell 10 can be tested, so as to perform quality control of the insulating film and improve the quality of the obtained battery cell 10.

[0092] For example, the thickness measurement assembly 31 may measure the thickness of the insulating film by utilizing the relationship between the thickness of the insulating film and optical properties such as the transmittance of the insulating film.

[0093] In some embodiments, the coating apparatus further includes an appearance inspection device 4, which is disposed upstream of the coating apparatus 2 in the conveying direction for inspecting the appearance of the battery cell 10.

[0094] The appearance inspection device 4 can be a device used to inspect the appearance of the battery cell 10. By setting the appearance inspection device 4 upstream of the conveying direction of the coating device 2, the appearance of the battery cell 10 before coating can be inspected, and battery cells 10 with unqualified appearance can be selected and temporarily not coated, so that the appearance of the battery cells 10 that are coated is qualified, which is beneficial to improving the coating quality of the battery cells 10.

[0095] For example, the appearance inspection device 4 can use image recognition technology to identify defects on the surface of the battery cell 10. The appearance inspection device 4 may include a charge-coupled device (CCD) camera. CCD cameras have advantages such as high sensitivity, resistance to strong light, and low distortion, which helps to improve the quality of the acquired images of the surface of the battery cell 10 and improve the accuracy of the inspection results of the appearance inspection device 4.

[0096] In some embodiments, the coating apparatus further includes a cleaning device 5, which is disposed upstream of the coating apparatus 2 in the conveying direction for removing dust from the battery cells 10.

[0097] The cleaning device 5 can be a device for cleaning the outer surface of the battery cell 10, which improves the cleanliness of the outer surface of the battery cell 10 and is beneficial to improving the quality of the subsequent coating of the battery cell 10.

[0098] For example, the cleaning device 5 may include a blowing device that can clean dust from the surface of the battery cell 10 by blowing air. In some embodiments, the cleaning air blown by the blowing device may also be a plasma gas, which is beneficial to improving the cleaning ability of the surface of the battery cell 10.

[0099] In some embodiments, the coating apparatus further includes an insulating film cutting device 6, which is disposed between the coating apparatus 2 and the detection device 3.

[0100] The insulating film cutting device 6 can be used to cut the insulating film covering the surface of the battery cell 10. The insulating film cutting device 6 can cut notches at the corner edges of the insulating film, allowing the corners of the insulating film to be easily bent and bonded to the surface of the battery cell 10. Alternatively, the insulating film cutting device 6 can be used to cut the insulating film into a preset shape. After cutting by the insulating film cutting device 6, the insulating film on the outer periphery of the battery cell 10 can be in a preset shape, which helps improve the consistency of the insulating film on the outer periphery of the battery cell 10.

[0101] For example, the insulating film cutting device 6 may include a laser cutter, which is beneficial to improving the cutting quality of the insulating film.

[0102] In some embodiments, the transfer assembly 21 includes a coating loading mechanism 211 and a coating unloading mechanism 212. The coating loading mechanism 211 is used to transfer the battery cell 10 on the carrier 12 to the coating assembly 22, and the coating unloading mechanism 212 is used to transfer the battery cell 10 on the coating assembly 22 to the carrier 12.

[0103] The coating loading mechanism 211 can be a mechanism in the transfer assembly 21 used to transfer the battery cell 10 from the carrier 12 to the coating assembly 22. Through the transfer of the coating loading mechanism 211, the battery cell 10 can be removed from the conveying device 1 and placed into the coating device 2, so that the battery cell 10 is removed from the conveying device 1 for coating.

[0104] The coating unloading mechanism 212 can be a mechanism in the transfer assembly 21 used to transfer the battery cell 10 from the coating assembly 22 to the carrier 12. It can place the coated battery cell 10 back onto the carrier 12 so that the battery cell 10 can continue to be conveyed. Through the transfer of the coating unloading mechanism 212, the battery cell 10 can be removed from the coating device 2 and placed into the carrier 12 so that the battery cell 10 can continue to be conveyed by the transfer device 1.

[0105] For example, the coating feeding mechanism 211 and the coating unloading mechanism 212 may include mechanical grippers that can easily pick up and transfer the battery cells 10.

[0106] In some embodiments, the coating equipment further includes a feeding device 7 and a discharging device 8. The feeding device 7 is located upstream of the coating device 2 in the conveying direction and is used to transfer the battery cell 10 to the carrier 12. The discharging device 8 is located downstream of the detection device 3 in the conveying direction and is used to transfer the battery cell 10 off the carrier 12.

[0107] The feeding device 7 can be a device in the coating equipment used to transfer battery cells 10 from external equipment to the conveying device 1, enabling the battery cells 10 to enter the coating equipment. By setting the feeding device 7 upstream of the coating device 2 in the conveying direction, the feeding device 7 can transfer battery cells 10 without insulating film to the coating equipment, so that the conveying device 1 can move the battery cells 10 without insulating film towards the coating device 2.

[0108] The unloading device 8 can be a device in the coating equipment used to transfer the coated and inspected battery cell 10 from the conveying device 1 to an external device, which enables the coated battery cell 10 to be unloaded from the coating equipment. By setting the unloading device 8 downstream of the inspection device 3 in the conveying direction, the inspected battery cell 10 covered with insulating film can be unloaded from the coating equipment.

[0109] Some embodiments of this application also provide a method for coating a battery cell 10. Referring to FIG4, the method for coating a battery cell 10 includes the following steps:

[0110] S1. Load battery cell 10, placing the battery cell 10 on the carrier 12 of the conveying device 1 at the first position.

[0111] In step S1, during loading, the battery cell 10 is placed on the carrier 12 located at the first position, so that the battery cell 10 can be transported downstream from the starting position of the conveying device 1 on the carrier 12, so that it can be transported under the support of the carrier 12 and processed through each process in sequence.

[0112] S2. The transport battery cell 10 is moved downstream by the conveying mechanism 11 of the conveying device 1, which drives the carrier 12.

[0113] In step S2, the conveying mechanism 11 drives the carrier 12 to move by applying a driving force to the carrier 12, so that the carrier 12 can carry the battery cell 10 downstream, thereby transferring the battery cell 10 between various processes.

[0114] S3. The battery cell 10 is covered with an insulating film. The coating device 2 covers the surface of the outer shell of the battery cell 10 with an insulating film.

[0115] In step S3, the coating device 2 is used to coat the surface of the outer shell of the battery cell 10 with an insulating film to wrap the outer shell of the battery cell 10 and perform a coating process on the battery cell 10.

[0116] S4. Unload the battery cell 10, removing the battery cell 10 covered with the insulating film from the carrier 12.

[0117] In step S4, the battery cell 10 covered with the insulating film is unloaded from the carrier 12 to achieve the unloading of the battery cell 10 covered with the insulating film.

[0118] S5, the carrier 12 returns to its original position, and the conveying mechanism 11 conveys the carrier 12 back to the first position.

[0119] In step S5 above, by causing the conveying mechanism 11 to convey the carrier 12 back to the first position, the carrier 12 that has removed the battery cell 10 can return to the first position again, so that the carrier 12 can transport the battery cell 10 downstream from the starting position of the conveying device 1 again.

[0120] In the above scheme, after the battery cell 10 is wrapped and unloaded, the carrier 12 holding the battery cell 10 in the first position will return to the first position, so that the carrier 12 will move cyclically under the drive of the conveying mechanism 11.

[0121] In some embodiments, multiple coating devices 2 are provided, and the multiple coating devices 2 are arranged sequentially along the conveying direction of the carrier 12. The multiple coating devices 2 are arranged sequentially along the conveying direction of the carrier 12, which can be arranged at intervals along the conveying direction of the carrier 12, so that the coating equipment can simultaneously coat multiple battery cells 10 with insulating film, thereby giving the coating equipment a high coating efficiency.

[0122] Some embodiments of this application also provide a battery device manufacturing system, which includes a coating device for battery cells 10 provided by any of the above technical solutions, the coating device being used to coat the battery cells 10.

[0123] Some embodiments of this application provide a coating device for a battery cell 10. The coating device includes a conveying device 1, a detection device 3, an appearance detection device 4, a cleaning device 5, an insulating film cutting device 6, a feeding device 7, a discharging device 8, and multiple coating devices 2. The carrier 12 in the conveying device 1 is cyclically conveyed under the action of the conveying mechanism 11. The multiple coating devices 2 are arranged along the conveying direction of the carrier 12 and cover the surface of the outer shell of the battery cell 10 with an insulating film. The detection device 3 is arranged downstream of the coating devices 2, and the thickness measurement assembly 31 and the insulation test assembly 32 therein are spaced apart along the conveying direction. The cleaning device 5 is arranged upstream of the appearance detection device 4 in the conveying direction. The appearance detection device 4 is arranged upstream of the coating devices 2 in the conveying direction. The feeding device 7 is arranged upstream of the cleaning device 5 in the conveying direction. The discharging device 8 is arranged downstream of the detection device 3 in the conveying direction. In the above structure, since multiple coating devices 2 are arranged along the conveying direction of the carrier 12 to coat the surface of the outer shell of the battery cell 10 with an insulating film, the battery cell 10 can be provided to multiple coating devices 2 through a single conveying device 1. This helps to reduce the number of conveying devices 1, reduce the space occupied by the coating equipment of the battery cell 10, and facilitate the miniaturization of the battery production system.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A coating device for a single battery cell, comprising: A conveying device includes a conveying mechanism and a plurality of carriers, wherein the plurality of carriers are disposed on the conveying mechanism, and the conveying mechanism cyclically conveys the carriers, wherein the carriers are used to carry individual battery cells; Multiple coating devices are arranged along the conveying direction of the carrier. Each coating device includes a transfer assembly and a coating assembly. The coating assembly is used to coat the surface of the outer shell of the battery cell with an insulating film. The transfer assembly is used to transfer the battery cell between the coating assembly and the carrier.

2. The coating equipment for a single battery cell according to claim 1, wherein, The conveying mechanism drives the carrier component by magnetic force.

3. The coating equipment for a battery cell according to claim 1 or 2, wherein, The carrier has multiple support positions, which are used to place the battery cells.

4. The coating equipment for a single battery cell according to claim 3, wherein, The number of the bearing positions is equal to the number of the coating devices. The coating devices are arranged one-to-one with the bearing positions and are used to coat the battery cells in the corresponding bearing positions.

5. The coating equipment for a battery cell according to claim 3 or 4, wherein, The bearing position includes a clamping component for clamping the battery cell.

6. The coating apparatus for a battery cell according to any one of claims 1-5, wherein, The battery cell coating equipment also includes a detection device for detecting the insulating film covering the outer casing.

7. The coating equipment for a single battery cell according to claim 6, wherein, The conveying mechanism includes a first conveying section and a plurality of second conveying sections. The coating device is used to coat the battery cells conveyed by the first conveying section with a coating. The plurality of second conveying sections are spaced apart along a direction intersecting the conveying direction. The detection device is used to detect the insulating film in the battery cells conveyed by the second conveying sections.

8. The coating equipment for a single battery cell according to claim 7, wherein, The number of detection devices is equal to the number of the second transmission segments. Each detection device is set up in a one-to-one correspondence with the second transmission segment and is used to detect the battery cells in the corresponding second transmission segment.

9. The coating apparatus for a battery cell according to claim 7 or 8, wherein, The conveying mechanism includes a second connecting mechanism and a third connecting mechanism. The second connecting mechanism is disposed upstream of the plurality of second conveying segments along the conveying direction and is used to transfer the carrier on the first conveying segment to the second conveying segment. The third connecting mechanism is disposed downstream of the plurality of second conveying segments along the conveying direction and is used to transfer the carrier on the second conveying segment to the first conveying segment.

10. The coating apparatus for a battery cell according to any one of claims 7-9, wherein, The first conveying section is provided in multiple ways, and the multiple first conveying sections are arranged sequentially along the conveying direction. A first connecting mechanism for transferring the carrier between two adjacent first conveying sections is provided.

11. The coating apparatus for a single battery cell according to claim 10, wherein, The number of the first conveying segments is equal to the number of the coating devices, and the first conveying segments and the coating devices are arranged in a one-to-one correspondence.

12. The coating apparatus for a battery cell according to any one of claims 6-11, wherein, A buffer position is provided at the conveying mechanism upstream of the coating device and / or at the conveying mechanism upstream of the detection device, the buffer position being used to temporarily store the carrier.

13. The coating apparatus for a battery cell according to any one of claims 6-12, wherein, The coating equipment also includes an insulating film cutting device, which is disposed between the coating equipment and the detection device.

14. The coating apparatus for a battery cell according to any one of claims 6-13, wherein, The coating equipment further includes a feeding device and a discharging device. The feeding device is located upstream of the coating device in the conveying direction and is used to transfer the battery cell to the carrier. The discharging device is located downstream of the detection device in the conveying direction and is used to transfer the battery cell off the carrier.

15. The coating apparatus for a battery cell according to any one of claims 6-14, wherein, The detection device includes a thickness measurement assembly and an insulation testing assembly, which are spaced apart along the conveying direction. The thickness measurement assembly is used to detect the thickness of the insulating film, and the insulation testing assembly is used to detect the insulation performance of the insulating film.

16. The coating apparatus for a battery cell according to any one of claims 1-15, wherein, The coating equipment also includes an appearance inspection device, which is located upstream of the coating equipment in the conveying direction and is used to inspect the appearance of the battery cell.

17. The coating apparatus for a battery cell according to any one of claims 1-16, wherein, The coating equipment also includes a cleaning device, which is located upstream of the coating equipment in the conveying direction for removing dust from the battery cells.

18. The coating apparatus for a battery cell according to any one of claims 1-17, wherein, The transfer assembly includes a coating loading mechanism and a coating unloading mechanism. The coating loading mechanism is used to transfer the battery cells on the carrier to the coating assembly, and the coating unloading mechanism is used to transfer the battery cells on the coating assembly to the carrier.

19. A method for coating a single battery cell, comprising: Load the battery cells and place them on the carrier of the conveying device located at the first position; The conveying mechanism of the conveying device drives the carrier to move downstream during the transport of the battery cells. The battery cell is coated with an insulating film, and the coating device coats the surface of the battery cell's outer shell with an insulating film. The battery cell is unloaded from the carrier by unloading the battery cell covered with the insulating film; The carrier returns to its original position, and the conveying mechanism transports the carrier back to the first position.

20. The coating method for a single battery cell according to claim 19, wherein, The coating device is provided in multiple ways, and the multiple coating devices are arranged sequentially along the conveying direction of the carrier.

21. A battery device manufacturing system, comprising a coating device for battery cells as described in any one of claims 1-18, the coating device being used to coat battery cells.

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