Tab adhesive tape application device

Abstract

The present application provides a tab adhesive tape application device. The tab adhesive tape application device comprises an adhesive tape support member and cutting assemblies. The adhesive tape support member has two bearing surfaces arranged opposite to each other. The cutting assemblies are respectively arranged at two opposite sides of the adhesive tape support member. Each cutting assembly comprises a body, an annular cutting edge, and a plurality of air suction holes; the body has a locating plane facing a corresponding bearing surface; the annular cutting edge is arranged on the locating plane; the annular cutting edge protrudes from the locating plane; air inlets of the air suction holes are formed at the locating plane; and the annular cutting edge surrounds the air suction holes. The tab adhesive tape application device of the present application can ensure accurate alignment and good overlap between two adhesive tape segments adhered to the front surface and the back surface of a welding position, thereby effectively improving the adhesive tape application efficiency.

Description

Tab taping device

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202422334761.2, filed on September 25, 2024, entitled “Tab taping device”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the field of battery, in particular to a tab taping device. BACKGROUND

[0004] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy-saving and environmentally friendly advantages. For electric vehicles, battery device technology is an important factor for their development.

[0005] The battery device includes a battery cell. The battery cell includes an electrode assembly and a tab connector. The tab of the electrode assembly is welded to the tab connector. The welding position of the tab and the tab connector needs to be taped, for example, a blue tape is pasted. In the taping process, the tape needs to be cut manually, and then the tape is pasted on the welding position of the tab and the tab connector manually. The taping work efficiency is low.

[0006] SUMMARY

[0007] In view of the above problems, the present application provides a tab taping device which can ensure that the two tape segments pasted on the front and back of the welding position are accurately aligned with each other and have good coincidence, and effectively improve the taping work efficiency.

[0008] The present application provides a tab taping device, which includes a tape support and a cutting assembly. The tape support includes two opposite bearing surfaces. The cutting assembly is arranged on the opposite sides of the tape support. The cutting assembly includes a body, a ring-shaped cutting blade, and a plurality of air suction holes. The body has a positioning plane facing the bearing surface. The ring-shaped cutting blade is arranged on the positioning plane. The ring-shaped cutting blade protrudes from the positioning plane. The air suction holes have air inlets arranged on the positioning plane. The ring-shaped cutting blade is arranged around the air suction holes.

[0009] The tab gluing device provided by the embodiment of the present application comprises a tape support and a cutting assembly. The cutting assembly can cut the tape and obtain a tape segment, and meanwhile, the cutting assembly can adsorb and fix the tape segment, so that the cutting assembly itself can realize synchronous cutting and adsorption, effectively ensuring the position accuracy of the tape segment. After the cutting and adsorption actions are completed, the cutting assemblies arranged on both sides of the tape support can be synchronously moved to the front and back surfaces of the welding position, and can synchronously glue the front and back surfaces of the welding position. The tape segments obtained by the cutting assemblies arranged on both sides of the tape support are of the same shape and size, so that the two tape segments pasted on the front and back surfaces of the welding position can be accurately aligned and have good coincidence, and the possibility of exposed adhesive surface of the two tape segments is reduced. Meanwhile, the tab gluing device provided by the embodiment of the present application replaces the manual gluing process, and effectively improves the gluing work efficiency.

[0010] In some possible implementation manners, the tab gluing device further comprises a first positioning member and a second positioning member. One of the tape support and the cutting assembly is provided with the first positioning member, and the other is correspondingly provided with the second positioning member matched with the first positioning member.

[0011] When the cutting assembly performs the cutting and adsorption actions, the cutting assembly moves along the first direction to approach the bearing surface of the tape support. After the cutting assembly moves a predetermined distance along the first direction to approach the bearing surface of the tape support, the first positioning member and the second positioning member are in contact and aligned with each other, so as to provide positioning and guidance for the continuous movement of the cutting assembly, thereby improving the position accuracy of the cutting assembly and reducing the possibility that the cutting assemblies arranged on both sides of the tape support are in an asymmetric state due to the position deviation of the cutting assembly.

[0012] In some possible implementation manners, one of the first positioning member and the second positioning member is a positioning sleeve, and the other is a positioning pin matched with the positioning sleeve in a plug-in manner.

[0013] The structures of the first positioning member and the second positioning member are relatively simple, which is beneficial to reducing the machining difficulty and assembly difficulty of the first positioning member and the second positioning member.

[0014] In some possible implementation manners, the tape support further comprises a plurality of air blowing holes. The air outlet of the air blowing hole is arranged on the bearing surface.

[0015] The air blowing hole of the tape support is used to be connected with a gas supply device. When the cutting assembly moves away from the bearing surface, the gas supply device can blow air to the tape segment through the air blowing hole, so as to apply a force to the tape segment, making the tape segment relatively easy to overcome the adhesive force between the adhesive surface and the bearing surface, which is beneficial to ensuring that the tape segment is separated from the bearing surface smoothly, and reducing the possibility that the tape segment is torn or separated from the positioning plane due to the adhesion between the tape segment and the bearing surface.

[0016] In some possible implementation manners, the bearing surface is a concave-convex surface.

[0017] In the case that the adhesive surface of the adhesive tape is bonded to the bearing surface of the adhesive tape support, the concave-convex structure of the bearing surface of the adhesive tape support can be beneficial to reduce the bonding area between the adhesive surface of the adhesive tape and the bearing surface of the adhesive tape support, thereby being beneficial to reduce the bonding force between the adhesive tape segment and the bearing surface, so that the adhesive tape segment adsorbed on the cutting assembly can relatively easily overcome the bonding force between the adhesive surface and the bearing surface when the cutting assembly moves away from the bearing surface, and the adhesive tape segment and the bearing surface can be smoothly separated.

[0018] In some possible implementation manners, the bearing surface comprises a convex portion. The surface of the convex portion is a spherical surface.

[0019] The convex portion of the bearing surface can provide good support for the adhesive tape, and can relatively reduce the bonding area between the adhesive tape and the bearing surface. The convex portion of the bearing surface is not easy to exert local concentrated stress on the adhesive tape, and the possibility that the bearing surface extrudes the adhesive tape to cause the adhesive tape to tear is reduced.

[0020] In some possible implementation manners, the adhesive tape support comprises a base body and a non-stick layer. The non-stick layer is arranged on the surface of the base body. The non-stick layer has the bearing surface.

[0021] When the cutting assembly cuts the adhesive tape, the adhesive surface of the adhesive tape is bonded to the non-stick layer. The bonding force between the adhesive surface of the adhesive tape and the non-stick layer is relatively small, so that the adhesive tape segment adsorbed on the cutting assembly can relatively easily overcome the bonding force between the adhesive surface and the bearing surface when the cutting assembly moves away from the bearing surface, and the adhesive tape segment and the bearing surface can be smoothly separated.

[0022] In some possible implementation manners, the non-stick layer is a Teflon coating or a ceramic particle coating, thereby being beneficial to ensure that the adhesive tape support has good support performance, and the Teflon coating or the ceramic particle coating is stably connected to the base body, and the non-stick layer is not easy to peel off from the base body.

[0023] In some possible implementation manners, the tab pasting device comprises a first driving device. The cutting assembly is connected to the first driving device. The first driving device is configured to drive the cutting assembly to move towards or away from the adhesive tape support along a first direction.

[0024] The first driving device drives the cutting assembly to move in a manner that can realize automatic control of the movement process of the cutting assembly towards the adhesive tape support, the cutting process, and the movement process of the cutting assembly away from the adhesive tape support, is beneficial to improve the position accuracy of the cutting assembly, thereby being beneficial to reduce the position error of the cutting assembly when the adhesive tape segment is pasted, and ensure that the cutting assembly can accurately paste the adhesive tape segment at a predetermined position.

[0025] In some possible implementation manners, the tab pasting device comprises a second driving device. The first driving device is connected with the second driving device. The second driving device is configured to drive the first driving device and the cutting assembly to move synchronously in the second direction, so as to switch the cutting assembly between the cutting station and the pasting station. The first direction is perpendicular to the second direction.

[0026] The manner in which the second driving device drives the cutting assembly to switch between the cutting station and the pasting station can realize automatic control of the movement process of the cutting assembly, and is beneficial to improving the movement position accuracy of the cutting assembly, thereby being beneficial to reducing the position error of the cutting assembly when pasting the adhesive tape segment, and ensuring that the cutting assembly can accurately paste the adhesive tape segment at the predetermined position. BRIEF DESCRIPTION OF DRAWINGS

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments, and are not intended to limit the scope of the present application. Moreover, the same reference numerals are used throughout the same figures. In the drawings:

[0028] FIG. 1 is a structural schematic diagram of a vehicle according to an embodiment of the present application;

[0029] FIG. 2 is a structural schematic diagram of a battery device according to an embodiment of the present application;

[0030] FIG. 3 is a structural schematic diagram of a battery module according to an embodiment of the present application;

[0031] FIG. 4 is an exploded structural schematic diagram of a battery cell according to an embodiment of the present application;

[0032] FIG. 5 is a connection structural schematic diagram of an electrode assembly and a tab according to an embodiment of the present application;

[0033] FIG. 6 is a connection structural schematic diagram of an electrode assembly and an adhesive tape segment according to an embodiment of the present application;

[0034] FIG. 7 is a partial structural schematic diagram of a tab pasting device according to an embodiment of the present application;

[0035] FIG. 8 is a partial structural schematic diagram of a cutting assembly according to an embodiment of the present application;

[0036] FIG. 9 is a partial sectional structural schematic diagram of a cutting assembly according to an embodiment of the present application;

[0037] FIG. 10 is a partial structural schematic diagram of a cutting assembly cutting an adhesive tape according to an embodiment of the present application;

[0038] FIG. 11 is a partial structural schematic diagram of a cutting assembly adsorbing an adhesive tape segment according to an embodiment of the present application;

[0039] Fig. 12 is a schematic view of a cutting assembly taping process according to an embodiment of the present application;

[0040] Fig. 13 is a schematic view of a partial structure of a tab taping device according to an embodiment of the present application;

[0041] Fig. 14 is a schematic view of a partial cross-sectional structure of a tab taping device according to an embodiment of the present application;

[0042] Fig. 15 is a schematic view of a partial structure of an adhesive tape support according to an embodiment of the present application;

[0043] Fig. 16 is a schematic view of a partial cross-sectional structure of an adhesive tape support according to an embodiment of the present application;

[0044] Fig. 17 is a schematic view of a partial structure of a tab taping device according to an embodiment of the present application;

[0045] Fig. 18 is a schematic view of a partial structure of a tab taping device according to an embodiment of the present application.

[0046] Legend of reference signs:

[0047] 1, vehicle; 10, battery device; 10a, box body; 10b, first box body part; 10c, second box body part; 11, controller; 12, motor; 20, battery module; 30, battery cell; 40, end cover; 41, electrode terminal; 50, housing; 60, electrode assembly; 61, tab; 70, adapter piece; 80, welding position; 90, adhesive tape; 100, adhesive tape section; 110, adhesive tape support; 110a, base body; 110b, non-stick layer; 111, bearing surface; 1111, convex part; 112, air blowing hole; 120, cutting assembly; 121, body; 1211, positioning plane; 122, annular cutting blade; 123, air suction hole; 130, first positioning member; 140, second positioning member; 150, first driving device; 160, second driving device; 161, screw rod; 162, adapter seat; 163, motor; 170, adhesive tape feeding roll; 180, adhesive tape collecting roll; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0048] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0049] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should be understood as the usual meanings understood by the persons skilled in the art to which the embodiments of the present application belong.

[0050] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0051] In addition, the technical terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0052] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0053] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0054] At present, from the development of market situation, the application of battery device is more and more widely. The battery device is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of battery device, the market demand is also increasing.

[0055] In the present application, the battery cell can include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc. The present application embodiments are not limited thereto. The battery cell can be in the shape of a flat body, a cuboid, or other shapes, etc. The present application embodiments are not limited thereto.

[0056] The battery device mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. The battery device mentioned in the present application can be a battery pack. For example, the battery device mentioned in the present application can include a battery module. The battery device generally includes a box for packaging one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell.

[0057] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work.

[0058] The electric device described in the embodiments of the present application can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, and an electric tool, etc. The vehicle can be a fuel automobile, a gas automobile, or a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid electric automobile, or an extended range automobile, etc. The spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, for example, a game console, an electric automobile toy, an electric ship toy, and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, etc. The present application embodiments do not specially limit the above-mentioned electric devices.

[0059] It should be understood that the technical solutions described in the embodiments of the present application are not only limited to the above-mentioned battery devices and electric devices, but can also be applied to all battery devices including a box and electric devices using the battery device. However, for the sake of simplicity of description, the following embodiments are described taking an electric vehicle as an example.

[0060] Fig. 1 schematically shows a structure of a vehicle 1. Referring to Fig. 1, the vehicle 1 can be a fuel automobile, a gas automobile, or a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid automobile, or a range extended automobile, etc. The vehicle 1 is internally provided with a battery device 10. The battery device 10 can be arranged at a bottom, a head, or a tail of the vehicle 1. The battery device 10 can be used for power supply of the vehicle 1. For example, the battery device 10 can be used as an operating power source of the vehicle 1. The vehicle 1 can further include a controller 11 and a motor 12. The controller 11 is used to control the battery device 10 to supply power to the motor 12. For example, the power demand for starting, navigation, and driving of the vehicle 1.

[0061] In some embodiments of the present application, the battery device 10 can not only be used as an operating power source of the vehicle 1, but also be used as a driving power source of the vehicle 1 to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1.

[0062] In order to meet different power demands, the battery device 10 can include a plurality of battery cells. The battery cell refers to the smallest unit constituting a battery module or a battery pack. The plurality of battery cells can be connected in series and / or in parallel via electrode terminals to be applied to various application occasions. The battery device 10 mentioned in the present application includes a battery module or a battery pack. Among them, the plurality of battery cells can be connected in series or in parallel or in a mixed manner. The mixed manner refers to a mixture of series connection and parallel connection. In the embodiments of the present application, the plurality of battery cells can directly constitute a battery pack, or first constitute a battery module 20, and then the battery module 20 constitutes a battery pack.

[0063] Fig. 2 schematically shows a structure of the battery device 10. Referring to Fig. 2, the battery device 10 includes a box body 10a and battery cells (not shown in the figure). The battery cells are accommodated in the box body 10a.

[0064] The box body 10a can be a simple cuboid or a cylinder or a sphere, or a complex three-dimensional structure composed of a simple cuboid or a cylinder or a sphere, which is not limited in the embodiments of the present application. The material of the box body 10a can be an alloy material such as aluminum alloy or iron alloy, a high polymer material such as polycarbonate or polyisocyanurate foam plastic, or a composite material such as glass fiber and epoxy resin, which is not limited in the embodiments of the present application.

[0065] The box 10a is used to accommodate the battery cells. The box 10a can be of various structures. In some embodiments, the box 10a can include a first box part 10b and a second box part 10c. The first box part 10b and the second box part 10c are mutually coverable. The first box part 10b and the second box part 10c together define an accommodation space for accommodating the battery cells. The second box part 10c can be a hollow structure with one end open. In some embodiments, the first box part 10b is a plate-like structure. The first box part 10b covers the open side of the second box part 10c to form the box 10a with the accommodation space. In some embodiments, the first box part 10b and the second box part 10c can also be hollow structures with one side open. The open side of the first box part 10b covers the open side of the second box part 10c to form the box 10a with the accommodation space. Of course, the first box part 10b and the second box part 10c can be of various shapes, such as a cylinder, a cuboid, etc.

[0066] To improve the sealing performance of the first box part 10b and the second box part 10c after being connected, a sealing member, such as a sealant, a sealing ring, etc., can be arranged between the first box part 10b and the second box part 10c.

[0067] In some embodiments, the first box part 10b covers the top of the second box part 10c. The first box part 10b can also be referred to as an upper box cover, and the second box part 10c can also be referred to as a lower box.

[0068] In the battery device 10, the battery cells can be one or multiple. When the battery cells are multiple, the multiple battery cells can be connected in series, in parallel, or in a mixed connection. The mixed connection means that there are both series connection and parallel connection among the multiple battery cells. The multiple battery cells can be directly connected in series, in parallel, or in a mixed connection, and then the whole of the multiple battery cells is accommodated in the box 10a. Of course, the multiple battery cells can first be connected in series, in parallel, or in a mixed connection to form a battery module 20. The multiple battery modules 20 are then connected in series, in parallel, or in a mixed connection to form a whole, which is accommodated in the box 10a.

[0069] In some embodiments, the structure of the battery module 20 is schematically shown in FIG. 3. Referring to FIG. 3, the battery cells 30 can be multiple. The multiple battery cells 30 are first connected in series, in parallel, or in a mixed connection to form the battery module 20. The multiple battery modules 20 are then connected in series, in parallel, or in a mixed connection to form a whole, which is accommodated in the box 10a.

[0070] The multiple battery cells 30 in the battery module 20 can be electrically connected through a busbar component to achieve parallel connection, series connection, or mixed connection of the multiple battery cells 30 in the battery module 20.

[0071] In the embodiments of the present application, the battery cell 30 can include a lithium ion battery cell, a sodium ion battery cell, or a magnesium ion battery cell, etc., and the embodiments of the present application are not limited thereto. The battery cell 30 can be in a flat body, a cuboid, or other shapes, etc., and the embodiments of the present application are not limited thereto. However, for the sake of simplicity, the following embodiments will be described by taking a cuboid square battery cell 30 as an example.

[0072] FIG. 4 schematically shows an exploded structure of the battery cell 30. The battery cell 30 refers to the smallest unit constituting the battery device 10. Referring to FIG. 4, the battery cell 30 includes an end cap 40, a case 50, and an electrode assembly 60.

[0073] The end cap 40 refers to a component that covers the opening of the case 50 to isolate the internal environment of the battery cell 30 from the external environment. For example, the shape of the end cap 40 can be adapted to the shape of the case 50 to fit the case 50. For example, the end cap 40 can be made of a material with certain hardness and strength (such as aluminum alloy), so that the end cap 40 is not easily deformed when subjected to extrusion and impact, so that the battery cell 30 can have higher structural strength, and the safety performance can also be improved. The end cap 40 can be provided with functional components such as an electrode terminal 41. The electrode terminal 41 can be used to electrically connect with the electrode assembly 60, for outputting or inputting the electrical energy of the battery cell 30.

[0074] In some embodiments, the end cap 40 can also be provided with a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 30 reaches a threshold value. The material of the end cap 40 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application are not specially limited thereto. In some embodiments, an insulating component can also be provided on the inner side of the end cap 40, which can be used to isolate the electrical connection components in the case 50 from the end cap 40 to reduce the risk of short circuit. For example, the insulating component can be plastic, rubber, etc.

[0075] The shell 50 is a component for fitting the end cover 40 to form an internal environment of the battery cell 30. The internal environment formed therein can be used to accommodate the electrode assembly 60, electrolyte (not shown in the figure), and other components. The shell 50 and the end cover 40 can be independent components. An opening can be provided on the shell 50, and the end cover 40 is fitted to the opening to form the internal environment of the battery cell 30. The end cover 40 and the shell 50 can also be integrated. Specifically, the end cover 40 and the shell 50 can be formed as a common connecting surface before other components are accommodated in the shell. When it is necessary to seal the internal environment of the shell 50, the end cover 40 is fitted to the shell 50. The shell 50 can be of various shapes and sizes, such as a cuboid, a hexagonal prism, and the like. Specifically, the shape of the shell 50 can be determined according to the specific shape and size of the electrode assembly 60. The shell 50 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, and the like, and the present application does not make special limitations on this.

[0076] The electrode assembly 60 is a component in which electrochemical reactions occur in the battery cell 30. Two or more electrode assemblies 60 can be contained in the shell 50. Each electrode assembly 60 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and an insulating member is usually provided between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have portions of active materials that constitute a main body of the electrode assembly. The portions of the positive electrode sheet and the negative electrode sheet that do not have active materials each constitute a tab. The positive tab and the negative tab can be located at one end of the main body or at both ends of the main body, respectively. In the charging and discharging process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs are connected to the electrode terminal to form a current loop.

[0077] In some possible implementation manners, FIG. 5 schematically shows a connection structure of the electrode assembly 60 and the adapter tab 70. FIG. 6 schematically shows a connection structure of the electrode assembly 60 and the adhesive tape segment 100. Referring to FIG. 5 and FIG. 6, the battery cell 30 further includes the adapter tab 70. The tab 61 of the electrode assembly 60 is welded with the adapter tab 70. For example, the tab 61 and the adapter tab 70 can be connected by ultrasonic welding. The adapter tab 70 is welded with the electrode terminal 41. The adapter tab 70 electrically connects the tab 61 and the electrode terminal 41. After the welding of the tab 61 and the adapter tab 70 is completed, the welding position 80 formed by the tab 61 and the adapter tab 70 needs to be pasted on the front and back surfaces. The adhesive tape segments 100 pasted on the front and back surfaces of the welding position 80 can cover the welding position 80 of the tab 61 and the adapter tab 70. For example, the adhesive tape segment 100 can be a blue adhesive tape with one sticky surface and one non-sticky surface. During the welding of the tab 61 and the adapter tab 70, there is a possibility that metal scraps exist in the welding position 80. The pasted adhesive tape segment 100 can fix the metal scraps possibly existing in the welding position 80, effectively reducing the possibility that the metal scraps fall and electrically connect the positive tab and the negative tab, thereby facilitating the reduction of the possibility that the positive tab and the negative tab are short-circuited.

[0078] In the related art, in the adhesive pasting process, the adhesive tape segment needs to be manually cut, and then the adhesive tape segment is manually pasted on the welding position 80 of the tab 61 and the adapter tab 70, thereby reducing the adhesive pasting efficiency. In addition, after the adhesive tape segment is pasted on the front surface of the welding position 80 by manual operation, the adhesive tape segment is pasted on the back surface of the welding position 80. Because the adhesive tape segments on the front and back surfaces of the welding position 80 are not accurately aligned with each other and have a deviation in coincidence degree, the adhesive tape segments on the front and back surfaces of the welding position 80 are misaligned with each other, thereby exposing the sticky surface of the adhesive tape segment. When the sticky surface of the adhesive tape segment is exposed, the sticky surface of the adhesive tape segment can be bonded to the adjacent structural member (for example, the adjacent tab 61), so that the adhesive tape segment and the structural member are pulled by each other, thereby causing the adhesive tape segment and the structural member to be damaged or the positions of the adhesive tape segment and the structural member to be deviated.

[0079] The tab adhesive pasting equipment in the embodiment of the present application can simultaneously paste the front and back surfaces of the welding position 80, and facilitate the accurate alignment and good coincidence degree of the adhesive tape segments on the front and back surfaces of the welding position 80.

[0080] FIG. 7 schematically shows a partial structure of the tab adhesive pasting equipment. FIG. 8 schematically shows a partial structure of the cutting assembly. FIG. 9 schematically shows a partial cross-sectional structure of the cutting assembly. Referring to FIG. 7, FIG. 8 and FIG. 9, the tab adhesive pasting equipment includes an adhesive tape support 110 and a cutting assembly 120.

[0081] The adhesive tape support 110 comprises two opposite bearing surfaces 111. The adhesive tape support 110 is provided with a cutting assembly 120 on each side. The cutting assembly 120 comprises a body 121, a ring-shaped cutting blade 122 and a plurality of air suction holes 123. The body 121 has a positioning plane 1211 facing the bearing surface 111. The ring-shaped cutting blade 122 is arranged on the positioning plane 1211. The ring-shaped cutting blade 122 protrudes from the positioning plane 1211. The air suction holes 123 have their air inlets arranged on the positioning plane 1211. The ring-shaped cutting blade 122 is arranged around the air suction holes 123.

[0082] Fig. 10 schematically shows a partial structure of the cutting assembly 120 cutting the adhesive tape 90. Fig. 11 schematically shows a partial structure of the cutting assembly 120 adsorbing the adhesive tape segment 100. Referring to Figs. 10 and 11, the adhesive tape 90 has opposite adhesive and non-adhesive surfaces. The adhesive tape 90 to be cut passes between the adhesive tape support 110 and the cutting assembly 120. The adhesive surface of the adhesive tape 90 faces the bearing surface 111 of the adhesive tape support 110. The non-adhesive surface of the adhesive tape 90 faces the cutting assembly 120. When the cutting assembly 120 cuts the adhesive tape 90 partially, the bearing surface 111 of the adhesive tape support 110 supports the adhesive tape 90. The ring-shaped cutting blade 122 of the cutting assembly 120 and the bearing surface 111 of the adhesive tape support 110 can jointly apply a force to the adhesive tape 90, so that the ring-shaped cutting blade 122 cuts the adhesive tape 90 partially and obtains the adhesive tape segment 100 with a predetermined shape. The air suction holes 123 of the cutting assembly 120 are connected to a negative pressure device. When the negative pressure device works, the air suction holes 123 can generate a negative pressure, so that the cut adhesive tape segment 100 can be adsorbed on the positioning plane 1211 of the body 121, so as to facilitate the cutting assembly 120 to carry the adhesive tape segment 100 to the adhesive application station to apply adhesive to the welding position 80. Fig. 12 schematically shows the adhesive application process of the cutting assembly 120. Referring to Fig. 12, after the cutting and adsorbing actions are completed, the cutting assemblies 120 provided on both sides of the adhesive tape support 110 can be moved synchronously to the front and back surfaces of the welding position 80, and can synchronously apply adhesive to the front and back surfaces of the welding position 80. After the adhesive application action is completed, the cutting assembly 120 is separated from the adhesive tape segment 100, and returns to the cutting station to cut the next adhesive tape segment 100.

[0083] The tab gluing device of the embodiment of the present application comprises a tape support 110 and a cutting assembly 120. The cutting assembly 120 can cut the tape 90 and obtain the tape segment 100, and meanwhile the cutting assembly 120 can adsorb and fix the tape segment 100, so that the cutting assembly 120 itself can realize synchronous cutting and adsorption, effectively ensuring the position accuracy of the tape segment 100. After the cutting and adsorption actions are completed, the cutting assemblies 120 arranged on both sides of the tape support 110 can be synchronously moved to the front and back surfaces of the welding position 80, and can synchronously glue the front and back surfaces of the welding position 80. The tape segments 100 obtained by the cutting assemblies 120 arranged on both sides of the tape support 110 are the same in shape and size, so that the two tape segments 100 pasted on the front and back surfaces of the welding position 80 can be accurately aligned and have good coincidence, reducing the possibility that the two tape segments 100 have exposed adhesive surfaces. Meanwhile, the tab gluing device of the embodiment of the present application replaces the manual gluing process, effectively improving the gluing work efficiency.

[0084] With respect to the tape support 110, the cutting assembly 120 arranged on one side of the tape support 110 is symmetrically arranged with the cutting assembly 120 arranged on the other side of the tape support 110. Therefore, the tape segments 100 obtained by the cutting assemblies 120 arranged on both sides of the tape support 110 are the same in shape, size and position, so that the two tape segments 100 pasted on the front and back surfaces of the welding position 80 can be accurately aligned and have good coincidence, reducing the possibility that the two tape segments 100 have exposed adhesive surfaces on the front and back surfaces of the welding position 80.

[0085] In some implementable modes, FIG. 13 schematically shows the partial structure of the tab gluing device. Referring to FIG. 13, the tab gluing device further comprises a first positioning member 130 and a second positioning member 140. One of the tape support 110 and the cutting assembly 120 is provided with the first positioning member 130, and the other is correspondingly provided with the second positioning member 140 matched with the first positioning member 130.

[0086] When the cutting and adsorbing actions are performed by the cutting assembly 120, the cutting assembly 120 moves towards the bearing surface 111 of the adhesive tape support 110 along the first direction X. After the cutting assembly 120 moves a predetermined distance towards the bearing surface 111 of the adhesive tape support 110 along the first direction X, the first positioning member 130 and the second positioning member 140 are in contact with each other to provide positioning and guiding for the continuous movement of the cutting assembly 120, so as to improve the position accuracy of the cutting assembly 120 and reduce the possibility that the cutting assembly 120 on both sides of the adhesive tape support 110 is in an asymmetric state due to the position deviation of the cutting assembly 120. After the cutting and adsorbing actions are completed, the cutting assembly 120 moves away from the bearing surface 111 of the adhesive tape support 110 along the first direction X. After the cutting assembly 120 moves a predetermined distance away from the bearing surface 111 of the adhesive tape support 110 along the first direction X, the first positioning member 130 and the second positioning member 140 are separated from each other.

[0087] In some examples, one of the first positioning member 130 and the second positioning member 140 is a positioning sleeve, and the other is a positioning pin matched with the positioning sleeve.

[0088] The positioning sleeve has a central positioning hole. After the cutting assembly 120 moves a predetermined distance towards the bearing surface 111 of the adhesive tape support 110 along the first direction X, the positioning pin and the positioning sleeve are matched with each other along the first direction X to provide positioning and guiding for the continuous movement of the cutting assembly 120. The structure of each of the first positioning member 130 and the second positioning member 140 is relatively simple, which is conducive to reducing the machining difficulty and assembly difficulty of each of the first positioning member 130 and the second positioning member 140.

[0089] Exemplarily, the adhesive tape support 110 is provided with the positioning sleeve. The cutting assembly 120 is correspondingly provided with the positioning pin. Each cutting assembly 120 can be correspondingly provided with two positioning pins, and the adhesive tape support 110 is provided with two positioning sleeves corresponding to one cutting assembly 120.

[0090] In some realizable modes, FIG. 14 schematically shows a partial cross-sectional structure of the tab taping equipment. Referring to FIG. 14, the adhesive tape support 110 further includes a plurality of air blowing holes 112. The air outlet of the air blowing hole 112 is arranged on the bearing surface 111.

[0091] Since the adhesive surface of the adhesive tape 90 faces the bearing surface 111 of the adhesive tape support 110, when the cutting assembly 120 cuts the adhesive tape 90, the adhesive surface of the adhesive tape 90 is bonded with the bearing surface 111, so that when the cutting assembly 120 moves away from the bearing surface 111, the adhesive tape segment 100 adsorbed on the cutting assembly 120 needs to overcome the bonding force between the adhesive surface and the bearing surface 111 to realize the separation of the adhesive tape segment 100 from the bearing surface 111.

[0092] The blowing hole 112 of the adhesive tape support 110 is used to communicate with a gas supply device. When the cutting assembly 120 moves away from the bearing surface 111, the gas supply device can blow gas to the adhesive tape segment 100 through the blowing hole 112 to apply a force to the adhesive tape segment 100, so that the adhesive tape segment 100 can relatively easily overcome the adhesion between the adhesive surface and the bearing surface 111, thereby facilitating the separation of the adhesive tape segment 100 from the bearing surface 111 and reducing the possibility of tearing of the adhesive tape segment 100 or the detachment of the adhesive tape segment 100 from the positioning plane 1211.

[0093] In some possible implementations, Fig. 15 schematically shows a partial structure of the adhesive tape support 110. Referring to Fig. 15, the bearing surface 111 of the adhesive tape support 110 is a concave-convex surface. The bearing surface 111 of the adhesive tape support 110 is a non-flat surface.

[0094] When the adhesive surface of the adhesive tape 90 is adhered to the bearing surface 111 of the adhesive tape support 110, the concave-convex structure of the bearing surface 111 of the adhesive tape support 110 can facilitate the reduction of the adhesion area between the adhesive surface of the adhesive tape 90 and the bearing surface 111 of the adhesive tape support 110, thereby facilitating the reduction of the adhesion between the adhesive tape segment 100 and the bearing surface 111, so that when the cutting assembly 120 moves away from the bearing surface 111, the adhesive tape segment 100 adsorbed on the cutting assembly 120 can relatively easily overcome the adhesion between the adhesive surface and the bearing surface 111, thereby ensuring the separation of the adhesive tape segment 100 from the bearing surface 111.

[0095] In some examples, referring to Fig. 15, the bearing surface 111 of the adhesive tape support 110 includes convex portions 1111. The convex portions 1111 and the convex portions 1111 form concave portions. The surface of the convex portion 1111 of the bearing surface 111 is a spherical surface. For example, the convex portion 1111 of the bearing surface 111 can be a semi-spherical surface. The convex portion 1111 of the bearing surface 111 can provide good support for the adhesive tape 90, while relatively reducing the adhesion area between the adhesive tape 90 and the bearing surface 111. The convex portion 1111 of the bearing surface 111 is less likely to apply local concentrated stress to the adhesive tape 90, thereby reducing the possibility of tearing of the adhesive tape 90 caused by the extrusion of the bearing surface 111 to the adhesive tape 90.

[0096] In some examples, Fig. 16 schematically shows a partial cross-sectional structure of the adhesive tape support 110. Referring to Fig. 16, the adhesive tape support 110 includes a base body 110a and a non-stick layer 110b. The non-stick layer 110b is arranged on the surface of the base body 110a. The non-stick layer 110b has the bearing surface 111.

[0097] When the cutting assembly 120 cuts the adhesive tape 90, the adhesive surface of the adhesive tape 90 is bonded with the non-stick layer 110b. The bonding force between the adhesive surface of the adhesive tape 90 and the non-stick layer 110b is relatively small, so that when the cutting assembly 120 moves away from the bearing surface 111, the adhesive tape segment 100 adsorbed on the cutting assembly 120 can relatively easily overcome the bonding force between the adhesive surface and the bearing surface 111, ensuring that the adhesive tape segment 100 is smoothly separated from the bearing surface 111.

[0098] In some examples, the non-stick layer 110b can be a Teflon coating or a ceramic particle coating, so as to facilitate ensuring that the adhesive tape support 110 has good support performance, and the Teflon coating or the ceramic particle coating is stably connected with the base 110a, facilitating ensuring that the non-stick layer 110b is not easy to peel off from the base 110a. For example, the material of the base 110a can be a metal material. For example, the material of the base 110a can be aluminum or an aluminum alloy.

[0099] In some possible implementations, FIG. 17 schematically shows a partial structure of the tab taping equipment. Referring to FIG. 17, the tab taping equipment includes a first driving device 150. The cutting assembly 120 is connected with the first driving device 150. The first driving device 150 is configured to drive the cutting assembly 120 to move along a first direction X to approach or move away from the adhesive tape support 110.

[0100] The manner in which the first driving device 150 drives the cutting assembly 120 to move can realize automatic control of the process in which the cutting assembly 120 moves to approach the adhesive tape support 110, the cutting process, and the process in which the cutting assembly 120 moves to move away from the adhesive tape support 110, facilitating improving the position accuracy of the cutting assembly 120, thereby facilitating reducing the position error of the cutting assembly 120 when taping, and ensuring that the cutting assembly 120 can accurately paste the adhesive tape segment 100 at a predetermined position.

[0101] In some examples, the first driving device 150 can include a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. The pneumatic cylinder, the hydraulic cylinder, or the electric cylinder includes a telescopic rod. The telescopic rod of the pneumatic cylinder, the hydraulic cylinder, or the electric cylinder is connected with the cutting assembly 120.

[0102] In some possible implementations, referring to FIG. 17, the tab taping equipment includes a second driving device 160. The first driving device 150 is connected with the second driving device 160. The second driving device 160 is configured to drive the first driving device 150 and the cutting assembly 120 to move synchronously along a second direction Y, so as to switch the cutting assembly 120 between the cutting station and the taping station. The first direction X is perpendicular to the second direction Y. In some examples, the first direction X can be a vertical direction, and the second direction Y can be a horizontal direction.

[0103] The second driving device 160 drives the switching mode of the cutting assembly 120 between the cutting station and the taping station, which can realize the automatic control of the moving process of the cutting assembly 120, and is beneficial to improve the moving position precision of the cutting assembly 120, thereby being beneficial to reduce the position error of the cutting assembly 120 when taping, and ensuring that the cutting assembly 120 can accurately paste the tape segment 100 at the predetermined position.

[0104] In some examples, the second driving device 160 includes a lead screw 161, an adapter seat 162, and a motor 163. The lead screw 161 is threadedly connected with the adapter seat 162. The motor 163 is connected with the lead screw 161. The motor 163 drives the lead screw 161 to rotate, and the lead screw 161 drives the adapter seat 162 to move along the second direction Y. The first driving device 150 is connected with the adapter seat 162.

[0105] In some implementable manners, FIG. 18 schematically shows the partial structure of the tab taping equipment. Referring to FIG. 18, the tab taping equipment further includes a tape feeding roll 170 and a tape collecting roll 180. The tape feeding roll 170 and the tape collecting roll 180 are respectively located on both sides of the tape support 110.

[0106] The tape feeding roll 170 can place a tape roll. The tape 90 released by the tape feeding roll 170 can be conveyed to the tape support 110 and the cutting assembly 120. After the cutting assembly 120 locally cuts the tape 90 to obtain the tape segment 100 to be pasted, the remaining tape 90 waste can enter the tape collecting roll 180 for storage.

[0107] In some examples, the cutting assembly 120 locally cuts the tape 90 to obtain a rectangular tape segment 100, and a matching rectangular hole is formed on the remaining tape 90 waste.

[0108] In some examples, the number of the tape feeding roll 170 and the number of the tape collecting roll 180 are both two. The tape 90 released by one tape feeding roll 170 can be conveyed to one bearing surface 111 of the tape support 110, and the tape 90 released by the other tape feeding roll 170 can be conveyed to the other bearing surface 111 of the tape support 110.

[0109] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present 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 tab taping device, comprising: a tape support, comprising two opposite bearing surfaces; a cutting assembly, the tape support is provided with the cutting assembly on both sides, the cutting assembly comprises a body, a ring-shaped cutting blade and a plurality of air suction holes, the body has a positioning plane facing the bearing surfaces, the ring-shaped cutting blade is arranged on the positioning plane and protrudes from the positioning plane, the air suction holes are arranged on the positioning plane, and the ring-shaped cutting blade surrounds the air suction holes.

2. The tab taping apparatus of claim 1, wherein, The tab taping device further comprises a first positioning member and a second positioning member, one of the tape support and the cutting assembly is provided with the first positioning member, and the other is provided with the second positioning member matched with the first positioning member.

3. The tab taping apparatus of claim 2, wherein, One of the first positioning member and the second positioning member is a positioning sleeve, and the other is a positioning pin matched with the positioning sleeve.

4. The tab taping apparatus according to any one of claims 1 to 3, wherein The tape support further comprises a plurality of air blowing holes, and the air blowing holes are arranged on the bearing surfaces.

5. The tab taping apparatus of any one of claims 1 to 4, wherein, The bearing surfaces are concave-convex surfaces.

6. The tab taping apparatus of claim 5, wherein, The bearing surfaces comprise convex portions, and the surfaces of the convex portions are spherical surfaces.

7. The tab taping apparatus of claim 5 or 6, wherein, The tape support comprises a base body and a non-stick layer, the non-stick layer is arranged on the surface of the base body, and the non-stick layer has the bearing surfaces.

8. The tab taping apparatus of claim 7, wherein, The non-stick layer is a Teflon coating or a ceramic particle coating.

9. The tab taping apparatus of any one of claims 1 to 8, wherein, The tab taping device comprises a first driving device, the cutting assembly is connected with the first driving device, and the first driving device is used to drive the cutting assembly to move towards or away from the tape support along a first direction.

10. The tab taping apparatus of claim 9, wherein, The tab taping device comprises a second driving device, the first driving device is connected with the second driving device, the second driving device is used to drive the first driving device and the cutting assembly to move synchronously along a second direction, so that the cutting assembly switches between a cutting station and a taping station, and the first direction is perpendicular to the second direction.

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