Tape cutting apparatus

Abstract

The present application provides a tape cutting apparatus. The tape cutting apparatus comprises a cutting assembly, a driving device, and a blocking member. The cutting assembly comprises a cutting blade holder, a cutting blade, a protective member, and elastic members. The cutting blade comprises a blade body and a blade edge. The blade body is connected to the cutting blade holder. The protective member is slidably connected to the cutting blade holder. The elastic members are disposed between the protective member and the cutting blade holder. The protective member is disposed on at least one side of the blade edge. The blade edge is lower than the protective member. The cutting blade holder is connected to the driving device. The blocking member is disposed corresponding to the protective member. The blocking member and the protective member are spaced apart from each other. A tape passing channel is formed between the blocking member and the protective member. The driving device is used for driving the cutting assembly to move. The protective member is close to or distant from the blocking member. The tape cutting apparatus provided in the present application is beneficial to improving the degree of automation of tape segment processing and manufacturing, reducing manual involvement, and thus effectively improving the work efficiency of tape segment cutting.

Description

Adhesive tape cutting device

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application 202422356432.8, filed on September 26, 2024, entitled “Adhesive tape cutting device”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the field of adhesive tape processing equipment, in particular to an adhesive tape cutting 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. In the production process of the battery cell, two or more electrode assemblies need to be bonded to form an overall structure by using an adhesive tape segment. In the process of making the adhesive tape segment, after a predetermined length of adhesive tape segment is released from the adhesive tape roll, the adhesive tape segment needs to be cut by hand before use, and the cutting work efficiency is low.

[0006] SUMMARY

[0007] In view of the above problems, the present application provides an adhesive tape cutting device, which is beneficial to improve the automation degree of adhesive tape segment processing and manufacturing, reduce the degree of manual participation, and thus effectively improve the cutting work efficiency of the adhesive tape segment.

[0008] The present application provides an adhesive tape cutting device, which includes a cutting assembly, a driving device, and a blocking piece. The cutting assembly includes a knife seat, a cutting knife, a protective piece, and an elastic piece. The cutting knife includes a knife body and a knife edge. The knife body is connected to the knife seat. The protective piece is slidably connected to the knife seat. The elastic piece is arranged between the protective piece and the knife seat. At least one side of the knife edge is provided with the protective piece. The knife edge is lower than the protective piece. The knife seat is connected to the driving device. The blocking piece is arranged corresponding to the protective piece. The blocking piece and the protective piece are arranged in a spaced manner. A tape passing channel is formed between the blocking piece and the protective piece. The driving device is used to drive the movement of the cutting assembly. The protective piece is close to or away from the blocking piece.

[0009] The tape cutting device of the embodiment of the present application realizes cutting of the adhesive tape through the cooperation of the cutting assembly, the driving device and the blocking piece to obtain the adhesive tape segment, thereby facilitating to improve the automation degree of the adhesive tape segment processing and manufacturing, reduce the degree of manual participation, and effectively improve the cutting work efficiency of the adhesive tape segment. During the processing and manufacturing of the adhesive tape segment, manual operation is required to thread the adhesive tape in the threading channel. Alternatively, during the later maintenance of the cutting assembly, manual operation is required to clean the adhesive tape remaining on the cutting assembly or the adhesive peeled from the adhesive tape. The cutting assembly comprises a protective piece. The cutting edge of the cutting knife is lower than the protective piece, so that the protective piece can effectively shield the cutting edge, thereby facilitating to reduce the possibility of contact between the hands of the personnel and the cutting edge and improve the safety of the cutting assembly.

[0010] In some implementable manners, the driving device comprises a telescopic rod, the knife seat is connected with the telescopic rod, the telescopic rod is driven to move in extension and retraction to drive the cutting assembly to move, the blocking piece is arranged corresponding to the protective piece along the axial direction of the telescopic rod, and the sliding direction of the protective piece relative to the knife seat is the same as the axial direction of the telescopic rod.

[0011] When the driving device is in the working state, the telescopic rod can be extended or retracted to drive the cutting assembly to switch between the initial working position and the cutting working position. The telescopic rod has good linear motion precision, thereby facilitating to keep the moving direction of the cutting assembly accurate to ensure that the protective piece can accurately contact the blocking piece and that the protective piece can smoothly slide relative to the knife seat and is not prone to jamming.

[0012] In some implementable manners, the axial direction of the telescopic rod is the same as the vertical direction, the cutting assembly is located above the telescopic rod, and the blocking piece is located above the protective piece.

[0013] The driving device can drive the cutting assembly to move up and down along the vertical direction through the telescopic rod. The cutting assembly can perform the cutting action on the adhesive tape from below the adhesive tape. During the upward movement of the cutting assembly to prepare for cutting the adhesive tape, when other objects (for example, hands) block the protective piece at the unexpected position where the protective piece is not in contact with the blocking piece, the driving device can cut off the power, at this time, the telescopic rod can be retracted under the action of the gravity of the cutting assembly itself to avoid the objects at the protective piece, thereby effectively reducing the possibility that the cutting edge of the cutting assembly is higher than the protective piece and causes injury to the objects due to the continuous driving of the driving device.

[0014] In some implementable manners, the cutting edge is lower than the top surface of the protective piece facing the blocking piece, the top surface is a plane, the cutting edge is provided with the protective piece on one side along the horizontal direction, and the cutting edge and the protective piece have a gap therebetween.

[0015] The top surface of the protection piece is flat, which is beneficial to ensure that the contact area between the protection piece and the blocking piece is large, so that the force on the protection piece is balanced, and at the same time, it is beneficial to reduce the component force generated between the protection piece and the blocking piece in the horizontal direction, and reduce the possibility of the protection piece and the blocking piece moving out of position after being in contact. The gap between the blade and the protection piece makes it difficult for the two to rub against each other when they move relative to each other, reducing the frictional resistance between them and also reducing the possibility of the blade scratching the protection piece.

[0016] In some possible implementations, the blocking piece is a blocking plate, the blocking piece includes a horizontal plate and two vertical plates, both of which are arranged on the side of the horizontal plate facing the top surface, the distance between the vertical plate and the top surface is smaller than the distance between the horizontal plate and the top surface, and the recess formed by the horizontal plate and the two vertical plates forms at least part of the tape passing channel.

[0017] After the driving device drives the cutting assembly to move a predetermined distance, the protection piece contacts the two vertical plates of the blocking piece, so that the blocking piece can block the movement of the protection piece. The two vertical plates of the blocking piece and the protection piece form two force points, so that the force on the protection piece is balanced, and the protection piece and the blocking piece are in a stable contact state. The protection piece and the horizontal plate have a spacing, so that the protection piece and the horizontal plate do not clamp the tape passing through the tape passing channel.

[0018] In some possible implementations, the protection piece includes a protection plate and a guide column connected to each other, the protection plate has a spacing with the tool seat, the blade is lower than the protection plate, the tool seat includes a guide hole, the guide column is in sliding fit with the guide hole, an elastic piece is arranged in the guide hole, and the blocking piece is arranged corresponding to the protection plate along the axial direction of the guide hole.

[0019] The guide column of the protection piece and the guide hole of the tool seat can be positioned with each other. When assembling the elastic piece, the protection piece and the tool seat, the elastic piece can be first placed in the guide hole of the tool seat, and then the guide column of the protection piece is aligned and inserted into the guide hole, so that the elastic piece and the protection piece are quickly and accurately assembled with the tool seat. The elastic piece arranged in the guide hole makes the elastic piece not easy to fall out of the tool seat.

[0020] In some possible implementations, the cutting assembly further includes a limiting guide sleeve, at least part of the limiting guide sleeve is located in the guide hole, the guide column includes a column body and a limiting cap, the protection plate is connected to the column body, the limiting guide sleeve is sleeved on the column body, the center hole of the limiting guide sleeve has a diameter smaller than that of the limiting cap, and the elastic piece is arranged between the limiting cap and the tool seat.

[0021] The limiting guide sleeve can limit the guard, reducing the possibility that the guide column of the guard is withdrawn from the guide hole, causing the guard to separate from the tool apron. After the guard, the tool apron and the limiting guide sleeve are assembled, the limiting cap of the guide column is located in the guide hole and can abut against the limiting guide sleeve, so that the guide column cannot be withdrawn from the limiting guide sleeve and the guide hole.

[0022] In some possible implementation manners, the cutting assembly further comprises a detection sensor and a sensing trigger, the detection sensor is connected to the tool apron, and the sensing trigger is connected to the guard plate. When the guard plate moves relative to the tool apron, the sensing trigger is used to trigger the detection sensor.

[0023] During the process in which the driving device drives the cutting assembly to move from the initial station to the cutting station, the guard can contact the blocking piece only after the cutting assembly moves a predetermined stroke. If the actual stroke of the cutting assembly is less than the predetermined stroke, and at the same time, other objects (for example, hands) appear at the guard by accident and press the guard to slide relative to the tool apron, the guard plate can drive the sensing trigger to move synchronously, so that the sensing trigger moves relative to the detection sensor. The sensing trigger can trigger the detection sensor, so that the adhesive tape cutting equipment cuts off the power supply of the driving device, so that the driving device stops driving the cutting assembly to continue moving, effectively reducing the possibility that the cutting knife injures the objects appearing at the guard.

[0024] In some possible implementation manners, the detection sensor is a proximity switch or a photoelectric sensor. The detection sensor has high detection accuracy and high sensitivity, which is beneficial to improve the detection accuracy of the detection sensor and shorten the detection reaction time.

[0025] In some possible implementation manners, the number of guide columns is two or more, one guard plate is connected to the two or more guide columns, and the number of guide holes is one-to-one corresponding to the number of guide columns.

[0026] The mode that one guard plate is connected to the tool apron through two or more guide columns is beneficial to improve the force balance of the guard plate and ensure that the guard can slide relative to the tool apron smoothly and is not prone to jamming. 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 the 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 application;

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

[0032] Fig. 5 is a partial structural schematic diagram of a tape cutting device according to an embodiment of the application;

[0033] Fig. 6 is a partial structural schematic diagram of a tape cutting device according to an embodiment of the application;

[0034] Fig. 7 is a partial exploded structural schematic diagram of a tape cutting device according to an embodiment of the application;

[0035] Fig. 8 is a structural schematic diagram of a tape to be cut by a tape cutting device according to an embodiment of the application at an initial station;

[0036] Fig. 9 is a structural schematic diagram of a tape being cut by a tape cutting device according to an embodiment of the application at a cutting station;

[0037] Fig. 10 is a partial structural schematic diagram of a tape cutting device according to an embodiment of the application;

[0038] Fig. 11 is a partial cross-sectional structural schematic diagram of a tape cutting device according to an embodiment of the application;

[0039] Fig. 12 is a partial structural schematic diagram of a tape cutting device according to an embodiment of the application.

[0040] Explanation of Reference Signs:

[0041] 1, vehicle; 10, battery device; 10a, case; 10b, first case portion; 10c, second case portion;

[0042] 11, controller; 12, motor;

[0043] 20, battery module;

[0044] 30, battery cell;

[0045] 40, end cap; 41, electrode terminal;

[0046] 50, housing;

[0047] 60, electrode assembly;

[0048] 70, tape cutting device;

[0049] 80, cutting assembly;

[0050] 81, blade holder; 811, guide hole;

[0051] 82, cutting knife; 821, knife body; 822, knife edge;

[0052] 83, guard; 83a, top surface; 831, guard plate; 832, guide post; 832a, post body; 832b, limit cap;

[0053] 84, elastic member;

[0054] 90, driving device; 91, telescopic rod;

[0055] 100, blocking member; 101, horizontal plate; 102, vertical plate;

[0056] 110, limit guide sleeve;

[0057] 120, detection sensor;

[0058] 130, induction trigger member;

[0059] 200, adhesive tape segment;

[0060] 300, adhesive tape;

[0061] Z, vertical direction. DETAILED DESCRIPTION

[0062] The embodiments of the technical scheme 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 scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0063] 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 meaning understood by the skilled person in the field to which the embodiments of the present application belong.

[0064] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying 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.

[0065] In addition, the technical terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0066] 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-mentioned terms in the embodiments of the present application can be understood according to the specific circumstances.

[0067] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate 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 directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0068] 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 demand of its market is also increasing.

[0069] In the present application, the battery monomer can include lithium ion secondary battery monomer, lithium ion primary battery monomer, lithium-sulfur battery monomer, sodium lithium ion battery monomer, sodium ion battery monomer or magnesium ion battery monomer, etc. The embodiments of the present application are not limited to this. The battery monomer can be flat body, rectangular body or other shape, etc. The embodiments of the present application are not limited to this.

[0070] 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 cells.

[0071] 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.

[0072] 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 vehicle, a hybrid electric vehicle, or an extended range vehicle, 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 car toy, an electric ship toy, and an electric plane 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 embodiments of the present application do not specially limit the above-mentioned electric devices.

[0073] 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 devices, but for the sake of brevity of description, the following embodiments are described taking an electric vehicle as an example.

[0074] FIG. 1 schematically shows the 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 vehicle, a hybrid electric vehicle, or an extended range vehicle, etc. The vehicle 1 is internally provided with a battery device 10. The battery device 10 can be arranged at the bottom, the head, or the 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 serve as the 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 working power demand for starting, navigation, and driving of the vehicle 1.

[0075] In some embodiments of the present application, the battery device 10 can not only serve as the operating power source of the vehicle 1, but also serve as the driving power source of the vehicle 1 to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1.

[0076] To meet different power requirements, the battery device 10 can include a plurality of battery cells. A battery cell refers to the smallest unit that constitutes 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 scenarios. The battery device 10 referred to 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 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 the battery module 20 constitutes a battery pack.

[0077] FIG. 2 schematically shows the structure of the battery device 10. Referring to FIG. 2, the battery device 10 includes a case 10a and battery cells (not shown). The battery cells are accommodated in the case 10a.

[0078] The case 10a can be a simple solid structure such as a cuboid or a cylinder or a sphere, or a complex solid structure composed of a cuboid or a cylinder or a sphere, and the present application is not limited thereto. The material of the case 10a can be an alloy material such as an aluminum alloy or a ferrous alloy, a high polymer material such as polycarbonate or polyisocyanurate foam plastic, or a composite material such as glass fiber and epoxy resin, and the present application is not limited thereto.

[0079] The case 10a is used to accommodate the battery cells, and the case 10a can have various structures. In some embodiments, the case 10a can include a first case portion 10b and a second case portion 10c. The first case portion 10b and the second case portion 10c are mutually covered. The first case portion 10b and the second case portion 10c together define an accommodation space for accommodating the battery cells. The second case portion 10c can be a hollow structure with one end open. In some embodiments, the first case portion 10b is a plate-shaped structure. The first case portion 10b covers the open side of the second case portion 10c to form the case 10a having the accommodation space. In some embodiments, the first case portion 10b and the second case portion 10c can also be hollow structures with one side open. The open side of the first case portion 10b covers the open side of the second case portion 10c to form the case 10a having the accommodation space. Of course, the first case portion 10b and the second case portion 10c can have various shapes, such as a cylinder, a cuboid, etc.

[0080] To improve the sealing performance of the first case portion 10b and the second case portion 10c after being connected, a sealing member such as sealing glue, a sealing ring, etc. can be provided between the first case portion 10b and the second case portion 10c.

[0081] 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.

[0082] In the battery device 10, the battery cell can be one or multiple. When the battery cell is multiple, the multiple battery cells can be connected in series, in parallel, or in a mixed manner. The mixed manner means that the multiple battery cells are connected in both series and parallel. The multiple battery cells can be directly connected in series, in parallel, or in a mixed manner, and then the whole of the multiple battery cells is accommodated in the box 10a. Of course, the multiple battery cells can be first connected in series, in parallel, or in a mixed manner to form a battery module 20. The multiple battery modules 20 are then connected in series, in parallel, or in a mixed manner to form a whole, and are accommodated in the box 10a.

[0083] In some embodiments, FIG. 3 schematically shows the structure of the battery module 20. Referring to FIG. 3, the battery cell 30 can be multiple. The multiple battery cells 30 are first connected in series, in parallel, or in a mixed manner to form the battery module 20. The multiple battery modules 20 are then connected in series, in parallel, or in a mixed manner to form a whole, and are accommodated in the box 10a.

[0084] The multiple battery cells 30 in the battery module 20 can be electrically connected through a busbar component to achieve parallel, series, or mixed connection of the multiple battery cells 30 in the battery module 20.

[0085] 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., which is not limited in the embodiments of the present application. The battery cell 30 can be a flat body, a cuboid, or other shapes, etc., which is also not limited in the embodiments of the present application. However, for the sake of simplicity, the following embodiments take the square battery cell 30 as an example for description.

[0086] FIG. 4 schematically shows the exploded structure of the battery cell 30. The battery cell 30 refers to the smallest unit that constitutes a battery. Referring to FIG. 4, the battery cell 30 includes an end cover 40, a shell 50, and an electrode assembly 60.

[0087] The end cover 40 refers to a component that covers the opening of the shell 50 to isolate the internal environment of the battery cell 30 from the external environment. For example, the shape of the end cover 40 can be adapted to the shape of the shell 50 to fit the shell 50. For example, the end cover 40 can be made of a material with certain hardness and strength (such as aluminum alloy), so that the end cover 40 is not easy to deform when subjected to extrusion and collision, so that the battery cell 30 can have higher structural strength, and the safety performance can also be improved. The end cover 40 can be provided with functional components such as an electrode terminal 41. The electrode terminal 41 can be used for electrical connection with the electrode assembly 60 for output or input of the electrical energy of the battery cell 30.

[0088] In some embodiments, the end cover 40 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 30 reaches a threshold value. The material of the end cover 40 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the present application does not make special limitations. In some embodiments, an insulating component can also be provided on the inner side of the end cover 40, which can be used to isolate the electrical connection components in the shell 50 from the end cover 40 to reduce the risk of short circuit. Exemplarily, the insulating component can be plastic, rubber, etc.

[0089] The shell 50 is a component for cooperating with the end cover 40 to form the internal environment of the battery cell 30. The formed internal environment 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 covered on the opening to form the internal environment of the battery cell 30. Without limitation, the end cover 40 and the shell 50 can also be integrated. Specifically, the end cover 40 and the shell 50 can form a common connecting surface before other components enter the shell. When it is necessary to encapsulate the internal environment of the shell 50, the end cover 40 is covered on the shell 50. The shell 50 can be various shapes and various sizes, such as cuboid, hexagonal prism, etc. Specifically, the shape of the shell 50 can be determined according to the specific shape and size of the electrode assembly 60. The material of the shell 50 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the present application does not make special limitations.

[0090] The electrode assembly 60 is a component where electrochemical reactions occur in the battery cell 30. The shell 50 can contain two or more electrode assemblies 60. Each electrode assembly 60 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and usually has a separator between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have a portion of active material constituting the main body of the electrode assembly. The portion of the positive electrode sheet and the negative electrode sheet without active material respectively constitutes the tab (not shown in the figure). The positive tab and the negative tab can be located at one end of the main body or at two 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 tab connects the electrode terminal to form a current loop.

[0091] In some possible implementation manners, referring to Figure 4, one battery monomer 30 includes two or more electrode assemblies 60. The two or more electrode assemblies 60 need to be bonded to form an integral structure by using the adhesive tape segment 200, and then the integral structure formed by the two or more electrode assemblies 60 is loaded into the shell 50. Exemplarily, the two or more electrode assemblies 60 are arranged in a stack. The adhesive tape segment 200 can be wound or bound around the periphery of the two or more electrode assemblies 60, so that the two or more electrode assemblies 60 form an integral structure.

[0092] Figure 5 schematically shows a partial structure of the adhesive tape cutting device 70. Figure 6 schematically shows a partial structure of the adhesive tape cutting device 70. Figure 7 schematically shows a partial exploded structure of the adhesive tape cutting device 70.

[0093] Referring to Figures 5, 6 and 7, the embodiment of the present application provides an adhesive tape cutting device 70. The adhesive tape cutting device 70 is used for cutting adhesive tape to obtain the adhesive tape segment 200. The adhesive tape cutting device 70 includes a cutting assembly 80, a driving device 90 and a blocking piece 100.

[0094] The cutting assembly 80 includes a knife seat 81, a cutting knife 82, a protection piece 83 and an elastic piece 84. The cutting knife 82 includes a knife body 821 and a knife edge 822. The knife body 821 of the cutting knife 82 is connected to the knife seat 81. The protection piece 83 is slidably connected to the knife seat 81. The elastic piece 84 is arranged between the protection piece 83 and the knife seat 81. The protection piece 83 is arranged on at least one side of the knife edge 822. The knife edge 822 of the cutting knife 82 is lower than the protection piece 83. The knife seat 81 of the cutting assembly 80 is connected to the driving device 90. The blocking piece 100 is arranged corresponding to the protection piece 83. The blocking piece 100 is located on the movement path of the protection piece 83. The blocking piece 100 and the protection piece 83 are arranged in a spaced manner. A tape passing channel is formed between the blocking piece 100 and the protection piece 83. The driving device 90 is used for driving the movement of the cutting assembly 80. The protection piece 83 is close to or away from the blocking piece 100.

[0095] Fig. 8 schematically shows the structure of the adhesive tape 300 to be cut by the adhesive tape cutting apparatus 70 in the initial position. Fig. 9 schematically shows the structure of the adhesive tape 300 cut by the adhesive tape cutting apparatus 70 in the cutting position. Referring to Figs. 8 and 9, the adhesive tape 300 released from the adhesive tape roll can pass through the tape passing channel between the blocking member 100 and the guard member 83. Then the driving device 90 is started to drive the cutting assembly 80 to switch from the initial position to the cutting position. Under the driving action of the driving device 90, the cutting assembly 80 as a whole approaches the blocking member 100, while the guard member 83 approaches the blocking member 100. After the guard member 83 in the cutting assembly 80 contacts the blocking member 100, the guard member 83 is stopped from moving by the blocking member 100, while the knife holder 81 and the cutting knife 82 continue to move, so that the guard member 83 slides relative to the knife holder 81. The guard member 83 and the knife holder 81 jointly apply an external force to the elastic member 84 to accumulate elastic potential energy of the elastic member 84. The relative movement between the guard member 83 and the cutting knife 82 causes the blade 822 of the cutting knife 82 to switch from a state below the guard member 83 to a state above the guard member 83, and the blade 822 above the guard member 83 can cut and sever the adhesive tape 300 to obtain the adhesive tape segment 200.

[0096] After the cutting knife 82 completes the cutting, the driving device 90 can drive the cutting assembly 80 to move away from the blocking member 100, so that the knife holder 81 and the cutting knife 82 switch from the cutting position to the initial position. The elastic member 84 releases the elastic potential energy, so that under the action of the elastic member 84, the guard member 83 slides relative to the knife holder 81, and the guard member 83 still maintains the contact state with the blocking member 100. After the driving device 90 drives the knife holder 81 and the cutting knife 82 to move away from the blocking member 100 by a predetermined distance, the elastic member 84 returns to the initial state, while the guard member 83 is separated from the contact state with the blocking member 100, and the two are separated. After the driving device 90 drives the cutting assembly 80 as a whole to continue to move away from the blocking member 100 by a predetermined distance, the driving device 90 stops working, while the cutting assembly 80 returns to the initial state, waiting for the next cutting action.

[0097] The tape cutting device 70 of the embodiment of the present application realizes the cutting of the tape 300 through the cooperation of the cutting assembly 80, the driving device 90 and the blocking piece 100 to obtain the tape segment 200, thereby facilitating the improvement of the automation degree of the processing and manufacturing of the tape segment 200, the reduction of the degree of manual participation, and the effective improvement of the cutting work efficiency of the tape segment 200. During the processing and manufacturing of the tape segment 200, manual threading operation is required to thread the tape 300 in the threading channel. Alternatively, during the later maintenance of the cutting assembly 80, manual cleaning is required for the residual tape on the cutting assembly 80 or the gel peeled from the tape 300. The cutting assembly 80 comprises a protective piece 83. The cutting edge 822 of the cutting knife 82 is lower than the protective piece 83, so that the protective piece 83 can effectively shield the cutting edge 822, thereby facilitating the reduction of the possibility of the contact between the hands of the personnel and the cutting edge 822 and improving the safety of the cutting assembly 80. In addition, during the cutting of the tape 300 by the cutting assembly 80, the cutting edge 822 of the cutting knife 82 is always lower than the protective piece 83 before the protective piece 83 contacts the blocking piece 100. The cutting edge 822 of the cutting knife 82 contacts the blocking piece 100 when the cutting edge 822 is at a relatively close distance from the tape 300, and then the cutting edge 822 is gradually switched from the state of being lower than the protective piece 83 to the state of being higher than the protective piece 83, so that the cutting edge 822 higher than the protective piece 83 can cut the tape 300. Therefore, the cutting assembly 80 also has good safety during the cutting of the tape 300.

[0098] In some implementable manners, the distance between the cutting edge 822 of the cutting knife 82 and the tape 300 is 3-5 mm when the protective piece 83 contacts the blocking piece 100. For example, the distance between the cutting edge 822 of the cutting knife 82 and the tape 300 is 3 mm, 4 mm or 5 mm when the protective piece 83 contacts the blocking piece 100. In some examples, the distance between the cutting edge 822 of the cutting knife 82 and the protective piece 83 is 2-4 mm when the cutting assembly 80 is at the initial station.

[0099] In some implementable manners, the blade body 821 of the cutting knife 82 is detachably connected to the knife seat 81. In some examples, the blade body 821 is detachably connected to the knife seat 81 by using screws or other fasteners.

[0100] In some implementable manners, referring to FIG. 9, the driving device 90 comprises a telescopic rod 91. The knife seat 81 is connected to the telescopic rod 91. The telescopic rod 91 is telescopically movable to drive the movement of the cutting assembly 80. The blocking piece 100 and the protective piece 83 are correspondingly arranged along the axial direction of the telescopic rod 91. The blocking piece 100 and the protective piece 83 form a threading channel therebetween. The sliding direction of the protective piece 83 relative to the knife seat 81 is the same as the axial direction of the telescopic rod 91.

[0101] When the driving device 90 is in operation, the telescopic rod 91 can be extended or retracted to drive the cutting assembly 80 to switch between the initial station and the cutting station. The telescopic rod 91 has good linear motion precision, thereby facilitating the cutting assembly 80 to keep accurate moving direction, so as to ensure that the guard 83 can accurately contact the blocking member 100, and meanwhile, ensure that the guard 83 can smoothly slide relative to the knife holder 81 and is not prone to jamming.

[0102] In some examples, the driving device 90 can include a pneumatic cylinder or a hydraulic cylinder.

[0103] In some examples, the axial direction of the telescopic rod 91 is the same as the vertical direction Z. The cutting assembly 80 is located above the telescopic rod 91. The blocking member 100 is located above the guard 83.

[0104] The driving device 90 can drive the cutting assembly 80 to move up and down along the vertical direction Z through the telescopic rod 91. The cutting assembly 80 can perform a cutting action on the adhesive tape 300 from below the adhesive tape 300. In the process of moving upward of the cutting assembly 80 to prepare for cutting the adhesive tape 300, when other objects (for example, hands) at the position of the guard 83 not in contact with the blocking member 100 unexpectedly block the guard 83, the driving device 90 can cut off power, at this time, the telescopic rod 91 can be retracted under the action of gravity of the cutting assembly 80 itself to avoid the objects at the position of the guard 83, effectively reducing the possibility that the driving device 90 continues to drive the cutting assembly 80 to cause the cutting edge 822 to be higher than the guard 83 and cause injury to the objects.

[0105] In some examples, FIG. 10 schematically shows a partial structure of the adhesive tape cutting device 70. Referring to FIG. 10, the cutting edge 822 of the cutting knife 82 is lower than the top surface 83a of the guard 83 facing the blocking member 100. The top surface 83a of the guard 83 is planar. In the horizontal direction, one side of the cutting edge 822 is provided with the guard 83, and the cutting edge 822 has a gap with the guard 83.

[0106] After the driving device 90 drives the cutting assembly 80 to move a predetermined distance, the top surface 83a of the guard 83 can contact the blocking member 100, so that the blocking member 100 can block the movement of the guard 83. The top surface 83a of the guard 83 is planar, which is beneficial to ensure that the contact area between the guard 83 and the blocking member 100 is large, so that the force acting on the guard 83 is balanced, and meanwhile, is beneficial to reduce the component force between the guard 83 and the blocking member 100 in the horizontal direction, thereby reducing the possibility that the guard 83 and the blocking member 100 move out of position after contacting. The cutting edge 822 has a gap with the guard 83, so that when the cutting edge 822 and the guard 83 move relative to each other, the two are not prone to friction, reducing the friction resistance therebetween, and also reducing the possibility that the cutting edge 822 scratches the guard 83.

[0107] In some examples, referring to FIG. 10, the blocking member 100 can be a blocking plate. The blocking member 100 includes a horizontal plate 101 and two vertical plates 102. The two vertical plates 102 are arranged on one side of the horizontal plate 101 facing the top surface 83a of the guard 83. In the horizontal direction, the two vertical plates 102 are arranged at the two ends of the horizontal plate 101, respectively. The distance between the vertical plate 102 and the top surface 83a is smaller than the distance between the horizontal plate 101 and the top surface 83a. The recess formed by the horizontal plate 101 and the two vertical plates 102 of the blocking member 100 forms at least part of the tape passing channel.

[0108] After the driving device 90 drives the cutting assembly 80 to move a predetermined distance, the guard 83 is in contact with the two vertical plates 102 of the blocking member 100, so that the blocking member 100 can block the movement of the guard 83. The two vertical plates 102 of the blocking member 100 and the guard 83 form two force points, so as to ensure that the guard 83 is balanced in force and that the guard 83 and the blocking member 100 are in a stable contact state. The guard 83 and the horizontal plate 101 have a spacing, so that the guard 83 and the horizontal plate 101 do not clamp the tape 300 passing through the tape passing channel.

[0109] In some realizable modes, FIG. 11 schematically shows a partial cross-sectional structure of the tape cutting device 70. Referring to FIG. 11, the guard 83 includes a guard plate 831 and a guide column 832 connected to each other. The guard plate 831 has a spacing with the knife seat 81. The cutting edge 822 of the cutting knife 82 is lower than the guard plate 831. The knife seat 81 includes a guide hole 811. The guide column 832 and the guide hole 811 are in sliding fit. The elastic member 84 is arranged in the guide hole 811. In the axial direction of the guide hole 811, the blocking member 100 is arranged corresponding to the guard plate 831.

[0110] The guide column 832 of the guard 83 and the guide hole 811 of the knife seat 81 can function as positioning each other. When assembling the elastic member 84, the guard 83 and the knife seat 81, the elastic member 84 can be first put into the guide hole 811 of the knife seat 81, and then the guide column 832 of the guard 83 is aligned and inserted into the guide hole 811, so as to facilitate the quick and accurate assembly of the elastic member 84 and the guard 83 with the knife seat 81. The arrangement of the elastic member 84 in the guide hole 811 makes the elastic member 84 not easy to fall out of the knife seat 81.

[0111] In some examples, the elastic member 84 can be a spiral spring. The guide column 832 of the guard 83 is a circular column. The guide hole 811 of the knife seat 81 is a circular hole.

[0112] In some examples, the cutting assembly 80 further comprises a limiting guide sleeve 110. At least a part of the limiting guide sleeve 110 is located in the guide hole 811 of the knife holder 81. The guide post 832 comprises a post body 832a and a limiting cap 832b. The guard plate 831 is connected to the post body 832a. The limiting guide sleeve 110 is sleeved on the post body 832a. The central hole of the limiting guide sleeve 110 has a diameter smaller than that of the limiting cap 832b. The elastic member 84 is arranged between the limiting cap 832b and the knife holder 81.

[0113] The limiting guide sleeve 110 can limit the guard 83, reducing the possibility that the guide post 832 of the guard 83 is withdrawn from the guide hole 811 and causes the guard 83 to be separated from the knife holder 81. After the guard 83, the knife holder 81 and the limiting guide sleeve 110 are assembled, the limiting cap 832b of the guide post 832 is located in the guide hole 811 and can abut against the limiting guide sleeve 110, so that the guide post 832 cannot be withdrawn from the limiting guide sleeve 110 and the guide hole 811.

[0114] In the process that the cutting assembly 80 moves from the initial station to the cutting station, after the guard 83 contacts the blocking member 100 and the guard 83 slides relative to the knife holder 81, the guide post 832 slides in the guide hole 811, the limiting cap 832b of the guide post 832 is out of contact with the limiting guide sleeve 110, and at the same time, the limiting cap 832b compresses the elastic member 84 to accumulate elastic potential energy of the elastic member 84.

[0115] In the process that the cutting assembly 80 moves from the cutting station to the initial station, the elastic member 84 releases the elastic potential energy to push the guide post 832 to slide in the guide hole 811. After the limiting cap 832b of the guide post 832 recontacts the limiting guide sleeve 110, the guard 83 moves synchronously with the knife holder 81, and at the same time, the guard plate 831 is out of contact with the blocking member 100.

[0116] In some examples, FIG. 12 schematically shows a partial structure of the adhesive tape cutting device 70. Referring to FIG. 12, the cutting assembly 80 further comprises a detection sensor 120 and a sensing trigger 130. The detection sensor 120 is connected to the knife holder 81. The sensing trigger 130 is connected to the guard plate 831. When the guard plate 831 moves relative to the knife holder 81, the sensing trigger 130 is used to trigger the detection sensor 120.

[0117] The cutting assembly 80 needs to move a predetermined stroke before the guard 83 can contact the blocking member 100 during the driving of the cutting assembly 80 from the initial station to the cutting station by the driving device 90. If the adhesive tape cutting apparatus 70 detects that the actual stroke of the cutting assembly 80 is less than the predetermined stroke, and other objects (e.g. hands) accidentally appear at the guard 83 and press the guard 83 to slide relative to the knife holder 81, the guard plate 831 can drive the sensing trigger 130 to move synchronously, so that the sensing trigger 130 moves relative to the detection sensor 120. The sensing trigger 130 can trigger the detection sensor 120, so that the adhesive tape cutting apparatus 70 cuts off the power supply of the driving device 90, so that the driving device 90 stops driving the cutting assembly 80 to continue moving, effectively reducing the possibility of the cutting knife 82 injuring the objects appearing at the guard 83.

[0118] In some examples, the driving device 90 can drive the cutting assembly 80 to move up and down along the vertical direction Z through the telescopic rod 91. If the adhesive tape cutting apparatus 70 detects that the actual stroke of the cutting assembly 80 is less than the predetermined stroke, and other objects (e.g. hands) accidentally appear at the guard 83 and press the guard 83 to slide relative to the knife holder 81, the guard plate 831 can drive the sensing trigger 130 to move synchronously, so that the sensing trigger 130 moves relative to the detection sensor 120. The sensing trigger 130 can trigger the detection sensor 120, so that the adhesive tape cutting apparatus 70 cuts off the power supply of the driving device 90, and the telescopic rod 91 can retract under the gravity of the cutting assembly 80 to avoid the objects at the guard 83, effectively reducing the possibility of the driving device 90 continuing to drive the cutting assembly 80, so that the cutting edge 822 is higher than the guard 83 and causes injury to the objects.

[0119] For example, the driving device 90 can include a pneumatic cylinder or a hydraulic cylinder. The sensing trigger 130 can trigger the detection sensor 120, so that the adhesive tape cutting apparatus 70 cuts off the power supply of the driving device 90, so that the driving device 90 can be depressurized, so that the telescopic rod 91 can retract under the gravity of the cutting assembly 80.

[0120] In some examples, if the adhesive tape cutting apparatus 70 detects that the actual stroke of the cutting assembly 80 is equal to the predetermined stroke, it is judged that the guard 83 contacts the blocking member 100, at this time, the detection sensor 120 can be powered off, so that when the blocking member 100 presses the guard 83 to slide relative to the knife holder 81, the sensing trigger 130 moves relative to the detection sensor 120. The sensing trigger 130 will not trigger the detection sensor 120, and the adhesive tape cutting apparatus 70 will not cut off the power supply of the driving device 90.

[0121] In some examples, the detection sensor 120 is a proximity switch or a photoelectric sensor. The detection sensor 120 has high detection accuracy and high sensitivity, which is conducive to improving the detection accuracy of the detection sensor 120 and shortening the detection reaction time. The sensing trigger 130 is in the form of a sheet structure. In the horizontal direction, the sensing trigger 130 is located on one side of the detection sensor 120.

[0122] In some examples, the cutting assembly 80 comprises a mounting bracket. The mounting bracket is connected to the knife seat 81. The detection sensor 120 is arranged on the mounting bracket.

[0123] In some examples, the protective plate 831 is provided with the sensing trigger 130 and the detection sensor 120 on the side away from the cutting knife 82.

[0124] In some examples, the number of guide columns 832 is two or more. The two or more guide columns 832 are arranged in the horizontal direction. One protective plate 831 is connected to the two or more guide columns 832. The number of guide holes 811 corresponds to the number of guide columns 832.

[0125] The protective plate 831 is connected to the knife seat 81 in a sliding manner through the two or more guide columns 832, which is conducive to improving the force balance of the protective plate 831 and ensuring that the protective plate 831 can slide smoothly relative to the knife seat 81 and is not prone to jamming.

[0126] In some examples, the number of elastic members 84, the number of limiting guide sleeves 110, and the number of guide holes 811 correspond to the number of guide columns 832.

[0127] In some examples, the number of guide columns 832 is two. The protective plate 831 is connected to the two guide columns 832 at opposite ends. The sensing trigger 130 is connected to the middle region of the protective plate 831. The connection region of the sensing trigger 130 and the protective plate 831 is located between the two guide columns 832.

[0128] In some examples, the protective plate 831 is detachably connected to each guide column 832. For example, the protective plate 831 and each guide column 832 are detachably connected through screws or other fasteners.

[0129] 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 tape cutting apparatus, wherein, The application relates to a cutting assembly, which comprises a cutter seat, a cutting knife, a protection piece and an elastic piece, the cutting knife comprises a cutter body and a cutter edge, the cutter body is connected to the cutter seat, the protection piece is slidably connected to the cutter seat, the elastic piece is arranged between the protection piece and the cutter seat, at least one side of the cutter edge is provided with the protection piece, and the cutter edge is lower than the protection piece. A driving device is connected to the cutter seat. A blocking piece is arranged corresponding to the protection piece, the blocking piece and the protection piece are spaced apart, a belt passing channel is formed between the blocking piece and the protection piece, the driving device is used for driving the cutting assembly to move, and the protection piece is close to or far away from the blocking piece. The driving device comprises a telescopic rod, the cutter seat is connected to the telescopic rod, the telescopic rod is telescopically moved to drive the cutting assembly to move, the blocking piece and the protection piece are arranged corresponding to each other along the axial direction of the telescopic rod, and the sliding direction of the protection piece relative to the cutter seat is the same as the axial direction of the telescopic rod.

2. The tape cutting apparatus of claim 1, wherein, The axial direction of the telescopic rod is the same as the vertical direction, the cutting assembly is located above the telescopic rod, and the blocking piece is located above the protection piece.

3. The tape cutting apparatus of claim 2, wherein, The cutter edge is lower than the top surface of the protection piece facing the blocking piece, the top surface is a plane, one side of the cutter edge is provided with the protection piece, and a gap is formed between the cutter edge and the protection piece.

4. The tape cutting apparatus of claim 3, wherein, The blocking piece is a blocking plate, the blocking piece comprises a horizontal plate and two vertical plates, the two vertical plates are arranged on one side of the horizontal plate facing the top surface, the distance between the vertical plate and the top surface is smaller than the distance between the horizontal plate and the top surface, and a recess formed by the horizontal plate and the two vertical plates forms at least part of the belt passing channel.

5. The tape cutting apparatus of claim 4, wherein, The protection piece comprises a protection plate and a guide column connected to each other, a gap is formed between the protection plate and the cutter seat, the cutter edge is lower than the protection plate, the cutter seat comprises a guide hole, the guide column is slidably matched with the guide hole, the elastic piece is arranged in the guide hole, and the blocking piece and the protection plate are arranged corresponding to each other along the axial direction of the guide hole.

6. The tape cutting apparatus according to any one of claims 1 to 5, wherein, The cutting assembly further comprises a limiting guide sleeve, at least part of the limiting guide sleeve is located in the guide hole, the guide column comprises a column body and a limiting cap, the protection plate is connected to the column body, the limiting guide sleeve is sleeved on the column body, the center hole diameter of the limiting guide sleeve is smaller than the diameter of the limiting cap, and the limiting cap is arranged with the elastic piece between the limiting cap and the cutter seat.

7. The tape cutting apparatus of claim 6, wherein, The cutting assembly further comprises a detection sensor and a sensing trigger piece, the detection sensor is connected to the cutter seat, the sensing trigger piece is connected to the protection plate, and the sensing trigger piece is used for triggering the detection sensor when the protection plate moves relative to the cutter seat.

8. The tape cutting apparatus according to claim 6 or 7, wherein, The detection sensor is a proximity switch or a photoelectric sensor.

9. The tape cutting apparatus of claim 8, wherein, The number of the guide columns is two or more than two, one protection plate is connected to two or more than two guide columns, and the number of the guide holes is one-to-one corresponding to the number of the guide columns.

10. The tape cutting apparatus according to any one of claims 6 to 9, wherein, ​

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