Battery adhesive tape application device

Abstract

Provided is a battery adhesive tape application device. The battery adhesive tape application device is configured to apply adhesive tape to a cylindrical electrode assembly (100). The battery adhesive tape application device comprises a first adhesive tape application mechanism (10) and a second adhesive tape application mechanism (20). The second adhesive tape application mechanism (20) and the first adhesive tape application mechanism (10) are arranged opposite to each other in a first direction (X), and a gap for accommodating the electrode assembly (100) is formed between the second adhesive tape application mechanism (20) and the first adhesive tape application mechanism (10); the first adhesive tape application mechanism (10) and the second adhesive tape application mechanism (20) are both configured to be movably arranged in the first direction (X); and the first direction (X) is perpendicular to the axial direction of the electrode assembly (100). The first adhesive tape application mechanism (10) is configured to apply a first adhesive tape (200) to the electrode assembly (100), and the second adhesive tape application mechanism (20) is configured to apply a second adhesive tape (300) to the electrode assembly (100), wherein the first adhesive tape (200) and the second adhesive tape (300) are joined end-to-end and wrapped around the outer periphery of the electrode assembly (100).

Description

Battery bonding equipment

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510111664.3, filed on January 23, 2025, entitled “Battery Adhesive Application Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of battery technology, and in particular to a battery adhesive applicator. Background Technology

[0004] With the development of new energy technologies, batteries are being used more and more widely, for example in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0005] In the battery manufacturing process, adhesive tape is often applied to various battery components using battery bonding equipment, such as the casing of individual battery cells or the tabs of electrode assemblies. The bonding efficiency and the cost of the equipment directly impact the overall economic efficiency of the battery. Therefore, effectively improving bonding efficiency and reducing the cost of battery bonding equipment is a pressing issue in battery technology. Summary of the Invention

[0006] In view of the above problems, this application provides a battery adhesive application device that can effectively improve adhesive application efficiency and reduce the cost of battery adhesive application device.

[0007] In a first aspect, embodiments of this application provide a battery adhesive applicator for applying adhesive to cylindrical electrode assemblies. The battery adhesive applicator includes a first adhesive applicator and a second adhesive applicator, which are disposed opposite to the first adhesive applicator along a first direction, forming a gap between them for accommodating the electrode assembly. Both the first and second adhesive applicators are configured to be movable along the first direction, which is perpendicular to the axial direction of the electrode assembly. The first adhesive applicator is used to attach a first adhesive tape to the electrode assembly, and the second adhesive applicator is used to attach a second adhesive tape to the electrode assembly, with the first and second adhesive tapes connected end-to-end and surrounding the outer periphery of the electrode assembly.

[0008] The battery adhesive bonding equipment described above places the cylindrical electrode assembly in the gap between the first and second adhesive bonding mechanisms when applying adhesive. The first and second mechanisms can complete the adhesive bonding work through a contactless bonding process, simplifying the overall bonding action and effectively improving bonding efficiency. Furthermore, it simplifies the structural complexity of the battery adhesive bonding equipment, helping to reduce its manufacturing cost.

[0009] In some embodiments of the first aspect, the first adhesive applicator includes a first base, a first rod, and a second rod, both rotatably connected to the first base, with their rotation axes parallel to the axial direction. The first and second rods are spaced apart along a second direction, and are used to attach the first adhesive tape to the electrode assembly, with the first direction, second direction, and axial direction being perpendicular to each other.

[0010] The above technical solution, through the rotatable design of the first and second rods, can effectively reduce the risk of the first adhesive tape curling up and improve the adhesive application quality.

[0011] In some embodiments of the first aspect, the first rod includes a first connector and a first adsorption member, the first connector being rotatably connected to a first base, and the first adsorption member being connected to the end of the first connector away from the first base, the first adsorption member being used to adsorb the first tape.

[0012] The above technical solution, by setting a first adsorption component, can effectively reduce the occurrence of slippage and displacement of the first adhesive tape, and can effectively improve the adhesive application quality.

[0013] In some embodiments of the first aspect, the first rod further includes a first roller, which is rotatably connected to the first adsorption member and disposed on the side of the first adsorption member close to the second rod along the second direction, and the rotation axis of the first roller is parallel to the axial direction.

[0014] The above technical solution, by introducing a first roller, can effectively reduce the risk of the electrode assembly or the first adhesive tape being scratched during the adhesive application process, thereby improving the product yield of the adhesive application quality.

[0015] In some embodiments of the first aspect, in the first direction, the end of the first roller away from the first connector is closer to the first connector than the side surface of the first adsorption member away from the first connector.

[0016] The above technical solution can reduce the influence of the first roller on the adsorption effect of the first adsorption element, not only improving the reliability of the first adsorption element adsorbing the first tape, but also improving the flatness of the first tape placed on the first adhesive mechanism, so as to reduce the risk of wrinkles or bubbles being generated when the first tape is subsequently attached to the electrode assembly, and improve the adhesive quality.

[0017] In some embodiments of the first aspect, the first adsorption member is provided with a first receiving groove, and at least a portion of the first roller is received in the first receiving groove.

[0018] The above technical solution, by introducing a first receiving groove, can reduce the space occupancy rate of the first roller and improve the overall structural compactness of the battery bonding equipment.

[0019] In some embodiments of the first aspect, the first adhesive applicator further includes a first elastic element connected between the first rod and the second rod, and used to apply a force to the first rod and the second rod that can drive them toward each other.

[0020] The above technical solution, by introducing a first elastic element, enables the first and second rods to automatically reset after the first adhesive applicator completes one adhesive applicator operation, thereby improving the ease of use of the battery adhesive applicator.

[0021] In some embodiments of the first aspect, the first adhesive applicator further includes a third rod connected to the first base and disposed between the first rod and the second rod, the third rod being configured to extend and retract along a first direction, the third rod being used to compress the first adhesive tape.

[0022] The above technical solution introduces a third rod, which can press the first tape tightly during the application process, thereby reducing the risk of the first tape moving or tilting, maintaining the stability of the first tape throughout the application process, and improving the application efficiency.

[0023] In some embodiments of the first aspect, the third rod includes a second elastic element and a first pressure head, the second elastic element being connected between the first base and the first pressure head, and the elastic modulus of the first pressure head being greater than the elastic modulus of the second elastic element.

[0024] The above technical solution, by reasonably setting the elastic modulus of the second elastic element and the first pressure head, can improve the pressing effect on the first tape while satisfying the telescopic function of the third rod in the first direction.

[0025] In some embodiments of the first aspect, the battery bonding device further includes a clamping mechanism for clamping and fixing the electrode assembly.

[0026] The above technical solution introduces a clamping mechanism, which can firmly clamp the electrode assembly during the adhesive application process, reducing displacement or vibration of the electrode assembly during adhesive application, thereby effectively improving the adhesive application quality.

[0027] In some embodiments of the first aspect, the clamping mechanism includes a first clamping member and a second clamping member, the first clamping member and the second clamping member being disposed opposite to each other along a first direction, and at least one of the first clamping member and the second clamping member being configured to be movable along the first direction.

[0028] The clamping mechanism of the above technical solution has a simple structure, which is not only easy to maintain, but also simplifies the overall structural complexity of the battery bonding equipment and helps to reduce the manufacturing cost of the battery bonding equipment.

[0029] In some embodiments of the first aspect, a first slot is provided on the side of the first clamping member facing the second clamping member, and the two opposite side walls of the first slot along the second direction are used to fit with the electrode assembly, wherein the first direction, the second direction and the axial direction are perpendicular to each other.

[0030] The above technical solution introduces a first slot, which can limit the displacement of the electrode assembly along the second direction, thereby further improving the stability of the electrode assembly during the adhesive application process.

[0031] In some embodiments of the first aspect, the size of the first slot gradually increases along the second direction in the first direction and in the direction in which the first clamping member points to the second clamping member.

[0032] The above technical solution can reduce the difficulty of docking the first slot with the electrode assembly to a certain extent during the process of the first clamping member moving close to the electrode assembly along the first direction, thereby improving the reliability of the clamping mechanism.

[0033] In some embodiments of the first aspect, the battery adhesive applicator further includes a driving device connected to the first adhesive applicator and the second adhesive applicator, and used to sequentially drive the first adhesive applicator and the second adhesive applicator to move along a first direction.

[0034] The driving device in the above technical solution optimizes the process and coordination of the adhesive application operation by sequentially driving the first adhesive application mechanism and the second adhesive application mechanism to move along the first direction. This design not only significantly improves the automation level of the battery adhesive application equipment, but also avoids interference problems that may occur when the first and second adhesive tapes are applied simultaneously.

[0035] In some embodiments of the first aspect, the battery adhesive applicator further includes an adhesive preparation device disposed near the first adhesive applicator and the second adhesive applicator, the adhesive preparation device being used to provide the first adhesive tape and the second adhesive tape.

[0036] The adhesive preparation device of the above technical solution can efficiently provide the first and second adhesive tapes, thereby helping to further improve the adhesive application efficiency of the battery bonding equipment.

[0037] In some embodiments of the first aspect, a first adhesive applicator is used to attach a first adhesive tape to the tab of the electrode assembly, and a second adhesive applicator is used to attach a second adhesive tape to the tab of the electrode assembly, with the first and second adhesive tapes connected end-to-end and wrapped around the outer periphery of the tab of the electrode assembly. This reduces the risk of short circuits caused by the tab of the motor assembly overlapping with the housing.

[0038] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0040] Figure 1 is a schematic diagram of the layout structure of a battery bonding device and an electrode assembly provided in some embodiments of this application;

[0041] Figure 2 is a three-dimensional structural diagram of the first adhesive application mechanism and the electrode assembly of a battery adhesive application device provided in some embodiments of this application;

[0042] Figure 3 is a three-dimensional structural schematic diagram of the first adhesive application mechanism of a battery adhesive application device provided in some embodiments of this application;

[0043] Figure 4 is a schematic diagram of the layout structure of another battery bonding device and electrode assembly provided in some embodiments of this application;

[0044] Figure 5 is a three-dimensional structural diagram of the first adhesive application mechanism and the electrode assembly of another battery adhesive application device provided in some embodiments of this application;

[0045] Figure 6 is a schematic diagram of the layout structure of another battery bonding device and electrode assembly provided in some embodiments of this application;

[0046] Figure 7 is a three-dimensional structural diagram of the first adhesive application mechanism and the electrode assembly of another battery adhesive application device provided in some embodiments of this application.

[0047] The reference numerals in the detailed embodiments are as follows: 100, electrode assembly; 200, first adhesive tape; 300, second adhesive tape; 10, first adhesive application mechanism; 11, first base; 12, first rod; 121, first connector; 122, first adsorption element; 123, first roller; 13, second rod; 14, first elastic element; 15, third rod; 151, second elastic element; 152, first pressure head; 20, second adhesive application mechanism; 30, clamping mechanism; 31, first clamping element; 311, first slot; 32, second clamping element; 40, driving device; 50, adhesive preparation device; 60, conveying device; 61, conveyor belt; 62, fixing component; X, first direction; Y, axial direction; Z, second direction. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, rather than to describe a specific order or hierarchy.

[0050] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0053] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0054] In this application, "multiple" means two or more (including two).

[0055] In this application, the term "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering.

[0056] In this application, the battery cell may 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., and the embodiments of this application are not limited thereto. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0057] With the development of new energy technologies, batteries are being used more and more widely, for example in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0058] In the battery production process, adhesive tape is often applied to some battery components using battery adhesive application equipment, such as the casing of individual battery cells or the tabs of electrode assemblies. The adhesive application efficiency and the cost of the battery adhesive application equipment directly affect the overall economic benefits of the battery.

[0059] In related technologies, a rotary adhesive application method is often used to apply adhesive to cylindrical electrode assemblies. For example, a battery adhesive application device includes a rotary drive mechanism and an adhesive application mechanism. The cylindrical electrode assembly is placed in the rotary drive mechanism. After the adhesive application mechanism applies one end of the adhesive tape to the electrode assembly, the rotary drive mechanism drives the electrode assembly to rotate, allowing the adhesive tape to wrap around the electrode assembly once. Then, the adhesive tape is cut to complete the adhesive application.

[0060] However, this rotary adhesive application method is relatively complex, involves multiple application steps, and is time-consuming, resulting in low overall adhesive application efficiency. Furthermore, the rotary adhesive application mechanism has a complex structure and high manufacturing costs.

[0061] Based on the above considerations, this application designs a battery adhesive applicator for applying adhesive to cylindrical electrode assemblies. The battery adhesive applicator includes a first adhesive applicator and a second adhesive applicator, which are arranged opposite to the first adhesive applicator along a first direction, forming a gap between them for accommodating the electrode assembly. Both the first and second adhesive applicators are configured to be movable along the first direction, which is perpendicular to the axial direction of the electrode assembly. Specifically, the first adhesive applicator applies a first adhesive tape to the electrode assembly, and the second adhesive applicator applies a second adhesive tape to the electrode assembly, with the first and second adhesive tapes connected end-to-end and surrounding the outer periphery of the electrode assembly.

[0062] The battery adhesive bonding equipment described above places the cylindrical electrode assembly in the gap between the first and second adhesive bonding mechanisms when applying adhesive. The first and second mechanisms can complete the adhesive bonding work through a contactless bonding process, simplifying the overall bonding action and effectively improving bonding efficiency. Furthermore, it simplifies the structural complexity of the battery adhesive bonding equipment, helping to reduce its manufacturing cost.

[0063] Figure 1 is a schematic diagram of the layout structure of a battery adhesive applicator and an electrode assembly provided in some embodiments of this application; Figure 2 is a schematic diagram of the three-dimensional structure of the first adhesive applicator mechanism and the electrode assembly of a battery adhesive applicator provided in some embodiments of this application; Figure 3 is a schematic diagram of the three-dimensional structure of the first adhesive applicator mechanism of a battery adhesive applicator provided in some embodiments of this application.

[0064] As shown in Figures 1 to 3, this application provides a battery adhesive applicator for applying adhesive to a cylindrical electrode assembly 100. The battery adhesive applicator includes a first adhesive applicator 10 and a second adhesive applicator 20. The second adhesive applicator 20 is disposed opposite to the first adhesive applicator 10 along a first direction X, and a gap is formed between them for accommodating the electrode assembly 100. Both the first adhesive applicator 10 and the second adhesive applicator 20 are configured to be movable along the first direction X, which is perpendicular to the axial direction Y of the electrode assembly 100. Specifically, the first adhesive applicator 10 is used to attach a first adhesive tape 200 to the electrode assembly 100, and the second adhesive applicator 20 is used to attach a second adhesive tape 300 to the electrode assembly 100, with the first adhesive tape 200 and the second adhesive tape 300 connected end-to-end and surrounding the outer periphery of the electrode assembly 100.

[0065] For example, when the battery adhesive applicator applies adhesive to the cylindrical electrode assembly 100, a first adhesive tape 200 is pre-installed on the first adhesive applicator 10, and a second adhesive tape 300 is pre-installed on the second adhesive applicator 20. The electrode assembly 100 is placed in the gap between the first adhesive applicator 10 and the second adhesive applicator 20. The first adhesive applicator 10 moves toward the electrode assembly 100 along a first direction X to attach the first adhesive tape 200 to the electrode assembly 100, and the second adhesive applicator 20 moves toward the electrode assembly 100 along the first direction X to attach the second adhesive tape 300 to the electrode assembly 100. The first adhesive tape 200 and the second adhesive tape 300 form an end-to-end ring structure around the outer periphery of the electrode assembly 100.

[0066] As an example, the first tape 200 can be manually pre-placed on the first adhesive application mechanism 10, and the second tape 300 can be pre-placed on the second adhesive application mechanism 20; alternatively, the adhesive preparation device 50 can automatically pre-place the first tape 200 on the first adhesive application mechanism 10 and the second tape 300 on the second adhesive application mechanism 20 before applying adhesive to the electrode assembly 100.

[0067] As an example, the first adhesive tape 200 pre-set on the first adhesive applicator 10 can be an independent sheet structure. After the first adhesive applicator 10 moves along the first direction X towards the electrode assembly 100 to attach the first adhesive tape 200 to the electrode assembly 100, the attachment of the first adhesive tape 200 is completed. The first adhesive tape 200 pre-set on the first adhesive applicator 10 can be a long strip structure, that is, the free end of the tape roll is placed on the first adhesive applicator 10. After the first adhesive applicator 10 moves along the first direction X towards the electrode assembly 100 to attach the first adhesive tape 200 to the electrode assembly 100, a cutter is used to cut and separate a portion of the first adhesive tape 200 attached to the electrode assembly 100 from the entire tape roll to complete the attachment of the first adhesive tape 200.

[0068] As an example, the second adhesive tape 300 pre-set on the second adhesive applicator 20 can be an independent sheet structure. After the second adhesive applicator 20 moves towards the electrode assembly 100 along the second direction Z to attach the second adhesive tape 300 to the electrode assembly 100, the attachment of the second adhesive tape 300 is completed. The second adhesive tape 300 pre-set on the second adhesive applicator 20 can be a long strip structure, that is, the free end of the tape roll is placed on the second adhesive applicator 20. After the second adhesive applicator 20 moves towards the electrode assembly 100 along the second direction Z to attach the second adhesive tape 300 to the electrode assembly 100, a cutter is used to cut and separate a portion of the second adhesive tape 300 attached to the electrode assembly 100 from the entire tape roll to complete the attachment of the second adhesive tape 300.

[0069] As an example, the electrode assembly 100 can be placed manually in the gap between the first adhesive application mechanism 10 and the second adhesive application mechanism 20; or the electrode assembly 100 can be transported to the gap between the first adhesive application mechanism 10 and the second adhesive application mechanism 20 by the conveying device 60.

[0070] As an example, the first adhesive applicator 10 and the second adhesive applicator 20 may move simultaneously along the first direction X toward the electrode assembly 100 to simultaneously apply the first adhesive tape 200 and the second adhesive tape 300; alternatively, the first adhesive applicator 10 may first move along the first direction X toward the electrode assembly 100 to apply the first adhesive tape 200 to the electrode assembly 100, and after the first adhesive tape 200 is applied, the second adhesive applicator 20 may then move along the first direction X toward the electrode assembly 100 to apply the second adhesive tape 300 to the electrode assembly 100; alternatively, the second adhesive applicator 20 may first move along the first direction X toward the electrode assembly 100 to apply the second adhesive tape 300 to the electrode assembly 100, and after the second adhesive tape 300 is applied, the first adhesive applicator 10 may then move along the first direction X toward the electrode assembly 100 to apply the first adhesive tape 200 to the electrode assembly 100.

[0071] The first direction X is perpendicular to the axial direction Y of the electrode assembly 100. That is, when the electrode assembly 100 is placed in the gap between the first adhesive application mechanism 10 and the second adhesive application mechanism 20, the first adhesive application mechanism 10 and the second adhesive application mechanism 20 are respectively located on both sides of the electrode assembly 100 along its own radial direction.

[0072] The size of the gap formed between the first adhesive applicator 10 and the second adhesive applicator 20 for accommodating the electrode assembly 100 matches the diameter of the electrode assembly 100. Furthermore, since both the first adhesive applicator 10 and the second adhesive applicator 20 are configured to be movable along the first direction X, the size of the gap has a certain degree of adjustability to accommodate electrode assemblies 100 of different specifications.

[0073] The first adhesive applicator 10 and the second adhesive applicator 20 may have the same structure or different structures.

[0074] The battery bonding equipment described above, when bonding adhesive to the cylindrical electrode assembly 100, places the electrode assembly 100 in the gap between the first bonding mechanism 10 and the second bonding mechanism 20. The first bonding mechanism 10 and the second bonding mechanism 20 can complete the bonding work by bonding them together, simplifying the overall bonding action and thus effectively improving bonding efficiency. Furthermore, it simplifies the structural complexity of the battery bonding equipment, helping to reduce its manufacturing cost.

[0075] In some embodiments, after the electrode assembly 100 is adhesively applied, the two ends of the first adhesive tape 200 and the second adhesive tape 300 attached to the electrode assembly 100 along the circumference of the electrode assembly 100 partially overlap. Specifically, the tail end of the first adhesive tape 200 and the head end of the second adhesive tape 300 overlap and cover each other in the circumference of the electrode assembly 100, and the head end of the first adhesive tape 200 and the tail end of the second adhesive tape 300 also overlap and cover each other in the circumference of the electrode assembly 100. This design can effectively avoid incomplete adhesive application caused by positioning deviation or insufficient tape length during the adhesive application process, thereby significantly improving the reliability of the electrode assembly 100 in subsequent use.

[0076] It should be noted that the beginning and end of the first tape 200 and the second tape 300 can be understood as follows: with one end of the first tape 200 as the beginning, the tape will pass through the end of the first tape 200, the beginning of the second tape 300, and the end of the second tape 300 in a clockwise direction.

[0077] In some embodiments, the first adhesive applicator 10 includes a first base 11, a first rod 12, and a second rod 13. Both the first rod 12 and the second rod 13 are rotatably connected to the first base 11, and their rotation axes are parallel to the axial direction Y. The first rod 12 and the second rod 13 are spaced apart along a second direction Z, and are used to attach the first adhesive tape 200 to the electrode assembly 100. The first direction X, the second direction Z, and the axial direction Y are perpendicular to each other.

[0078] For example, when the battery adhesive applicator applies adhesive to the cylindrical electrode assembly 100, the first adhesive tape 200 is fixed to one end of the first rod 12 near the second adhesive applicator 20 and the other end of the second rod 13 near the second adhesive applicator 20. During the process of the first adhesive applicator 10 moving along the first direction X towards the electrode assembly 100 to attach the first adhesive tape 200 to the electrode assembly 100, after the ends of the first rod 12 and the second rod 13 near the second adhesive applicator 20 contact the arcuate surface of the electrode assembly 100, the first rod 12 and the second rod 13 will experience a reaction force from the electrode assembly 100. This causes the first rod 12 and the second rod 13 to rotate relative to the first base 11 and move along the arcuate surface of the electrode assembly 100 as the first adhesive applicator 10 subsequently moves along the first direction X towards the electrode assembly 100, thereby pressing the first adhesive tape 200 tightly onto the surface of the electrode assembly 100 and reducing the risk of the first adhesive tape 200 tipping off.

[0079] The first rod 12 and the first base 11 are rotatably connected by a rotating member. For example, the rotating member can be disposed on the first base 11, and the first rod 12 can be provided with a corresponding mating member. The rotating member and the mating member rotate and engage to achieve the rotatable connection between the first rod 12 and the first base 11. Alternatively, the rotating member can be disposed on the first rod 12, and the first base 11 can be provided with a corresponding mating member. The rotating member and the mating member rotate and engage to achieve the rotatable connection between the first rod 12 and the first base 11.

[0080] As an example, the first rod 12 and the first base 11 can be rotatably connected by a pivot.

[0081] The second rod 13 and the first base 11 are rotatably connected by a rotating member. For example, the rotating member can be disposed on the first base 11, and the second rod 13 can be provided with a corresponding mating member. The rotating member and the mating member rotate and engage to achieve the rotatable connection between the second rod 13 and the first base 11. Alternatively, the rotating member can be disposed on the second rod 13, and the first base 11 can be provided with a corresponding mating member. The rotating member and the mating member rotate and engage to achieve the rotatable connection between the second rod 13 and the first base 11.

[0082] As an example, the second rod 13 and the first base 11 can be rotatably connected by a pivot.

[0083] Optionally, the first base 11 may be, but is not limited to, made of metallic or non-metallic materials. For example, metallic materials may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc., while non-metallic materials may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0084] Optionally, both the first rod 12 and the second rod 13 can be, but are not limited to, made of metallic or non-metallic materials. For example, metallic materials can be copper, copper alloys, aluminum, aluminum alloys, nickel, nickel alloys, titanium, titanium alloys, or stainless steel, while non-metallic materials can be ceramics, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0085] As an example, the first base 11, the first rod 12, and the second rod 13 can be made of the same material to simplify the manufacturing process and help reduce costs.

[0086] The above technical solution, through the rotatable design of the first rod 12 and the second rod 13, can effectively reduce the risk of the first tape 200 curling up and improve the adhesive application quality.

[0087] In some embodiments, the first rod 12 includes a first connector 121 and a first adsorption member 122. The first connector 121 is rotatably connected to the first base 11, and the first adsorption member 122 is connected to the end of the first connector 121 away from the first base 11. The first adsorption member 122 is used to adsorb the first tape 200.

[0088] The first adsorption member 122 can be detachably connected to the first connector 121, or it can be integrally formed on the first connector 121. The first adsorption member 122 can be directly connected to the first connector 121, or it can be constrained to the first connector 121 by other components. As an example, the connection method between the first connector 121 and the first adsorption member 122 can be, but is not limited to, bolt connection, riveting, snap-fit, or adhesive connection.

[0089] In some examples, the first suction element 122 is a vacuum suction cup, which uses negative pressure to generate suction to adhere objects to its surface. Depending on the application, vacuum suction cups can be made of different materials, such as silicone, rubber, and polyurethane, suitable for various flexible and fragile materials. Vacuum suction cups typically come in various shapes, including flat, corrugated, and polygonal types, to accommodate workpieces of different shapes and surfaces.

[0090] In other examples, the first adsorption element 122 is an electrostatic chuck, which generates an electrostatic field on the adsorption surface through electrodes, producing an adsorption force to fix the wiping material. Since electrostatic adsorption is particularly suitable for handling ultra-thin, lightweight, soft, or smooth materials, such as films, paper, and fabrics, using an electrostatic chuck to adsorb and fix the first tape 200 has a better effect.

[0091] In some other examples, the first adsorption element 122 is a negative pressure adsorber, and the first connector 121 has multiple through holes at the end away from the first base 11. The negative pressure adsorber is disposed inside the first connector 121. The negative pressure adsorber can generate suction force through the multiple through holes to adsorb and fix the first tape 200.

[0092] The above technical solution, by setting the first adsorption element 122, can effectively reduce the occurrence of slippage and displacement of the first adhesive tape 200, and can effectively improve the adhesive application quality.

[0093] In some embodiments, the first rod 12 further includes a first roller 123, which is rotatably connected to the first adsorption member 122 and disposed on the side of the first adsorption member 122 close to the second rod 13 along the second direction Z. The rotation axis of the first roller 123 is parallel to the axial direction Y.

[0094] For example, the first roller 123 is disposed inside the first adsorption member 122. During the process of the first adhesive applicator 10 moving along the first direction X toward the electrode assembly 100 to attach the first adhesive tape 200 to the electrode assembly 100, after the end of the first rod 12 near the second adhesive applicator 20 contacts the arc surface of the electrode assembly 100, the first rod 12 will be subjected to a reaction force from the electrode assembly 100. This causes the first rod 12 to rotate relative to the first base 11 and move along the arc surface of the electrode assembly 100 when the first adhesive applicator 10 subsequently moves along the first direction X toward the electrode assembly 100. The first roller 123 will also roll along the arc surface of the electrode assembly 100, thereby reducing the friction between the first rod 12 and the surface of the electrode assembly 100 or between the first rod 12 and the first adhesive tape 200 to a certain extent, so as to reduce the risk of the electrode assembly 100 or the first adhesive tape 200 being scratched.

[0095] The first roller 123 can be detachably connected to the first adsorption member 122, or it can be integrally formed on the first adsorption member 122. The first roller 123 can be directly connected to the first adsorption member 122, or it can be constrained to the first adsorption member 122 by other components.

[0096] Optionally, the first roller 123 may be, but is not limited to, made of metal or non-metal materials. For example, the metal material may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc., and the non-metal material may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0097] The above technical solution, by introducing the first roller 123, can effectively reduce the risk of the electrode assembly 100 or the first adhesive tape 200 being scratched during the adhesive application process, and improve the product yield of adhesive application quality.

[0098] In some embodiments, in the first direction X, the end of the first roller 123 away from the first connector 121 is closer to the first connector 121 relative to the side surface of the first suction member 122 away from the first connector 121. In other words, in the first direction X, the first roller 123 is slightly lower than the side surface of the first suction member 122 away from the first connector 121.

[0099] The above technical solution can reduce the influence of the first roller 123 on the adsorption effect of the first adsorption member 122. It can not only improve the reliability of the first adsorption member 122 adsorbing the first tape 200, but also improve the flatness of the first tape 200 placed on the first adhesive mechanism 10, so as to reduce the risk of wrinkles or bubbles being generated when the first tape 200 is subsequently attached to the electrode assembly 100, and improve the adhesive quality.

[0100] In some embodiments, the first adsorption member 122 is provided with a first receiving groove, and at least a portion of the first roller 123 is received in the first receiving groove.

[0101] For example, the first roller 123 may be partially or entirely contained in the first receiving groove.

[0102] The above technical solution, by introducing a first receiving groove, can reduce the space occupancy rate of the first roller 123 and improve the overall structural compactness of the battery bonding equipment.

[0103] In some embodiments, the second rod 13 includes a second connector and a second adsorption member. The second connector is rotatably connected to the first base 11, and the second adsorption member is connected to the end of the second connector away from the first base 11. The second adsorption member is used to adsorb the first tape 200.

[0104] In some embodiments, the second rod 13 further includes a second roller, which is rotatably connected to the second adsorption member and disposed on the side of the second adsorption member close to the first rod 12 along the second direction Z, and the rotation axis of the second roller is parallel to the axial direction Y.

[0105] In some embodiments, in the first direction X, the end of the second roller away from the second connector is closer to the second connector than the side surface of the second suction member away from the second connector.

[0106] In some embodiments, the second adsorption member is provided with a second receiving groove, and at least a portion of the second roller is received in the second receiving groove.

[0107] It should be noted that the second rod 13 may have the same structure as the first rod 12. The specific structural details of the second rod 13 can be referred to the relevant description of the first rod 12 mentioned above, and will not be repeated here.

[0108] In some embodiments, the first adhesive applicator 10 further includes a first elastic element 14, which is connected between the first rod 12 and the second rod 13 and is used to apply a force to the first rod 12 and the second rod 13 that can drive them to move closer to each other.

[0109] Exemplarily, after the first rod 12 and the second rod 13 rotate relative to the first base 11 and move along the arcuate surface of the electrode assembly 100 to firmly press the first adhesive tape 200 onto the surface of the electrode assembly 100, the first adhesive application mechanism 10 moves away from the motor assembly in the first direction X to return to its initial position. During this process, the first elastic member 14 can apply a force to the first rod 12 and the second rod 13 that can drive them closer to each other, so that the first rod 12 and the second rod 13 automatically reset to facilitate subsequent adhesive application to new electrode assemblies 100.

[0110] The first elastic element 14 can be detachably connected between the first rod 12 and the second rod 13, or it can be integrally formed on the first rod 12 and the second rod 13. The first roller 123 can be directly connected between the first rod 12 and the second rod 13, or it can be constrained between the first rod 12 and the second rod 13 by other components.

[0111] As an example, the first elastic element 14 may be, but is not limited to, made of rubber or spring steel.

[0112] The above technical solution, by introducing the first elastic element 14, enables the first rod 12 and the second rod 13 to automatically reset after the first adhesive applicator 10 completes one adhesive applicator operation, thereby improving the ease of use of the battery adhesive applicator.

[0113] In some embodiments, the first elastic element 14 is a spring.

[0114] In some embodiments, the first adhesive applicator 10 further includes a third rod 15, which is connected to the first base 11 and disposed between the first rod 12 and the second rod 13. The third rod 15 is configured to extend and retract along a first direction X, and is used to compress the first adhesive tape 200.

[0115] For example, during the process of the first adhesive applicator 10 moving along the first direction X toward the electrode assembly 100 to attach the first adhesive tape 200 to the electrode assembly 100, the third rod 15 abuts against the surface of the electrode assembly 100 to press a portion of the first adhesive tape 200 located between the third rod 15 and the electrode assembly 100. Since the third rod 15 is configured to be telescopically oriented along the first direction X, when the first adhesive applicator 10 subsequently moves along the first direction X toward the electrode assembly 100, the third rod 15 will be subjected to a reaction force from the electrode assembly 100. The third rod 15 avoids affecting the movement of the first adhesive applicator 10 by its own telescopic movement. Furthermore, as the first adhesive applicator 10 moves toward the electrode assembly 100 along the first direction X, the first rod 12 and the second rod 13 rotate relative to the first base 11 and move along the arc surface of the electrode assembly 100 to press the first adhesive tape 200 tightly onto the surface of the electrode assembly 100. At the same time, the third rod 15 will also squeeze the first adhesive tape 200 throughout the process to maintain the stability of the first adhesive tape 200.

[0116] As an example, the third rod 15 can be a rubber rod, which achieves telescopic movement through the elasticity of the rubber itself.

[0117] As an example, the third rod 15 can also be a mechanical spring mechanism, which achieves telescopic movement through the spring's restoring force.

[0118] The third rod 15 can be detachably connected to the first base 11, or it can be integrally mounted on the first base 11. The first roller 123 can be directly connected to the first base 11, or it can be constrained to the first base 11 by other components.

[0119] The above technical solution introduces a third rod 15, which can press the first tape 200 tightly during the adhesive application process, thereby reducing the risk of the first tape 200 moving or tilting, maintaining the stability of the first tape 200 throughout the adhesive application process, and improving adhesive application efficiency.

[0120] In some embodiments, the third rod 15 includes a second elastic element 151 and a first pressure head 152. The second elastic element 151 is connected between the first base 11 and the first pressure head 152, and the elastic modulus of the first pressure head 152 is less than the elastic modulus of the second elastic element 151.

[0121] For example, the second elastic element 151 has a larger elastic modulus and is mainly used to realize the telescoping function of the third rod 15 along the first direction X. The first pressure head 152 has a lower elastic modulus and can more effectively compress the first tape 200.

[0122] As an example, the second elastic element 151 can be a rubber rod, which achieves telescopic movement through the elasticity of the rubber itself.

[0123] As an example, the second elastic element 151 can also be a mechanical spring mechanism, which achieves the extension and retraction movement through the spring's restoring force.

[0124] In some examples, the first pressure head 152 is detachably connected to the second elastic member 151 for easy installation and removal, and to better accommodate the application of adhesive to electrode assemblies 100 of different sizes.

[0125] The above technical solution, by reasonably setting the elastic modulus of the second elastic element 151 and the first pressure head 152, can improve the pressing effect on the first tape 200 while satisfying the telescopic function of the third rod 15 along the first direction X.

[0126] For example, the elastic modulus of the second elastic element 151 and the first pressure head 152 can be measured by static mechanical tests, such as tensile tests, compression tests or bending tests.

[0127] In some embodiments, the second adhesive applicator 20 includes a second base, a third rod 15, and a fourth rod. The third rod 15 and the fourth rod are rotatably connected to the second base, and their rotation axes are parallel to the axial direction Y. The third rod 15 and the fourth rod are spaced apart along the second direction Z, and are used to attach the second adhesive tape 300 to the electrode assembly 100. The first direction X, the second direction Z, and the axial direction Y are perpendicular to each other.

[0128] In some embodiments, the third rod 15 includes a third connector and a third adsorption member. The third connector is rotatably connected to the second base, and the third adsorption member is connected to the end of the third connector away from the second base. The third adsorption member is used to adsorb the second tape 300.

[0129] In some embodiments, the third rod 15 further includes a third roller, which is rotatably connected to the third adsorption member and disposed on the side of the third adsorption member close to the fourth rod along the second direction Z. The rotation axis of the third roller is parallel to the axial direction Y.

[0130] In some embodiments, in the first direction X, the end of the third roller away from the third connector is closer to the third connector than the side surface of the third suction member away from the third connector.

[0131] In some embodiments, the third adsorption member is provided with a third receiving groove, and at least a portion of the third roller is received in the third receiving groove.

[0132] In some embodiments, the fourth rod includes a fourth connector and a fourth adsorption member. The fourth connector is rotatably connected to the second base, and the fourth adsorption member is connected to the end of the fourth connector away from the second base. The fourth adsorption member is used to adsorb the second tape 300.

[0133] In some embodiments, the fourth rod further includes a fourth roller, which is rotatably connected to the fourth adsorption member and disposed on the side of the fourth adsorption member close to the third rod 15 along the second direction Z, and the rotation axis of the fourth roller is parallel to the axial direction Y.

[0134] In some embodiments, in the first direction X, the end of the fourth roller away from the fourth connector is closer to the fourth connector than the side surface of the fourth suction member away from the fourth connector.

[0135] In some embodiments, the fourth adsorption member is provided with a fourth receiving groove, and at least a portion of the fourth roller is received in the fourth receiving groove.

[0136] In some embodiments, the second adhesive applicator 20 further includes a third elastic member connected between the third rod 15 and the fourth rod, and used to apply a force to the third rod 15 and the fourth rod that can drive them to move closer to each other.

[0137] In some embodiments, the second adhesive applicator 20 further includes a fifth rod connected to the second base and disposed between the third rod 15 and the fourth rod. The fifth rod is configured to extend and retract along a first direction X. The fifth rod is used to compress the second adhesive tape 300.

[0138] In some embodiments, the fifth rod includes a fourth elastic element and a second pressure head, the fourth elastic element being connected between the second base and the second pressure head, and the elastic modulus of the second pressure head being less than the elastic modulus of the fourth elastic element.

[0139] It should be noted that the second adhesive applicator 20 may have the same structure as the first adhesive applicator 10. For the specific structural details of the second adhesive applicator 20, please refer to the relevant description of the first adhesive applicator 10 above, which will not be repeated here.

[0140] Figure 4 is a schematic diagram of the layout structure of another battery adhesive applicator and electrode assembly 100 provided in some embodiments of this application, and Figure 5 is a schematic diagram of the three-dimensional structure of the first adhesive applicator 10 and electrode assembly 100 of another battery adhesive applicator provided in some embodiments of this application.

[0141] Referring again to Figures 4 and 5, in some embodiments, the battery bonding device further includes a clamping mechanism 30 for clamping and fixing the electrode assembly 100.

[0142] For example, when the battery adhesive applicator applies adhesive to the cylindrical electrode assembly 100, the clamping mechanism 30 first clamps and fixes the electrode assembly 100, and then the first adhesive applicator 10 and the second adhesive applicator 20 apply adhesive to the electrode assembly 100.

[0143] As an example, the clamping mechanism 30 may be, but is not limited to, a clamp-type gripper, a chuck, or a robotic arm.

[0144] The above technical solution introduces a clamping mechanism 30, which can stably clamp the electrode assembly 100 during the adhesive application process, reducing the displacement or vibration of the electrode assembly 100 during the adhesive application process, thereby effectively improving the adhesive application quality.

[0145] In some embodiments, the clamping mechanism 30 includes a first clamping member 31 and a second clamping member 32, the first clamping member 31 and the second clamping member 32 being disposed opposite to each other along a first direction X, and at least one of the first clamping member 31 and the second clamping member 32 being configured to be movable along the first direction X.

[0146] As an example, the first clamping member 31 may be configured to move along the first direction X, and the second clamping member 32 may be fixed; the first clamping member 31 may be fixed, and the second clamping member 32 may be configured to move along the first direction X; or both the first clamping member 31 and the second clamping member 32 may be configured to move along the first direction X.

[0147] As an example, the first clamping member 31 and / or the second clamping member 32 can be moved along the first direction X by manual driving, or the first clamping member 31 and / or the second clamping member 32 can be moved along the first direction X by a driving device 40, such as an electric cylinder or a servo motor.

[0148] Optionally, the first clamping member 31 and the second clamping member 32 can be, but are not limited to, block-shaped structures, plate-shaped structures or rod-shaped structures.

[0149] The first clamping member 31 and the second clamping member 32 may have the same structure or different structures.

[0150] The clamping mechanism 30 of the above technical solution has a simple structure, which is not only easy to maintain, but also simplifies the overall structural complexity of the battery bonding equipment and helps to reduce the manufacturing cost of the battery bonding equipment.

[0151] In some embodiments, the first clamping member 31 is provided with a first slot 311 on the side facing the second clamping member 32. The two opposite side walls of the first slot 311 along the second direction Z are used to fit with the electrode assembly 100. The first direction X, the second direction Z and the axial direction Y are perpendicular to each other.

[0152] For example, after the first clamping member 31 and the second clamping member 32 clamp the electrode assembly 100, a portion of the electrode assembly 100 will be located in the first slot 311, such that the two opposite side walls of the first slot 311 along the second direction Z are attached to the electrode assembly 100 to limit the displacement of the electrode assembly 100 along the second direction Z.

[0153] As an example, the projection shape of the first slot 311 along the axial direction Y can be, but is not limited to, a triangle, trapezoid, rectangle, or arc.

[0154] The above technical solution introduces a first slot 311, which can limit the displacement of the electrode assembly 100 along the second direction Z, thereby further improving the stability of the electrode assembly 100 during the adhesive application process.

[0155] In some embodiments, the second clamping member 32 has a second slot on the side facing the first clamping member 31, and the two opposite side walls of the second slot along the second direction Z are used to fit with the electrode assembly 100. This can further improve the stability of the electrode assembly 100 during the adhesive application process.

[0156] In some embodiments, in the first direction X, and in the direction from the first clamping member 31 to the second clamping member 32, the size of the first slot 311 gradually increases along the second direction Z. This allows the first slot 311 to form a trapezoidal slot, or it can be understood that the first slot 311 is a flared slot facing the second clamping member 32.

[0157] The above technical solution can reduce the difficulty of docking the first slot 311 with the electrode assembly 100 to a certain extent during the process of the first clamping member 31 moving close to the electrode assembly 100 along the first direction X, thereby improving the reliability of the clamping mechanism 30.

[0158] In some embodiments, in the direction of the first clamping member 32 pointing towards the first clamping member 31 in the first direction X, the size of the second slot gradually increases along the second direction Z. This allows the second slot to form a trapezoidal slot, or it can be understood that the second slot is a flared slot facing the first clamping member 31.

[0159] The above-mentioned technical solution can reduce the difficulty of docking the second slot with the electrode assembly 100 to a certain extent during the movement of the second clamping member 32 along the first direction X toward the electrode assembly 100, thereby improving the reliability of the clamping mechanism 30.

[0160] Figure 6 is a schematic diagram of the layout structure of another battery adhesive applicator and electrode assembly 100 provided in some embodiments of this application, and Figure 7 is a schematic diagram of the three-dimensional structure of the first adhesive applicator 10 and electrode assembly 100 of another battery adhesive applicator provided in some embodiments of this application.

[0161] Referring again to Figures 6 and 7, in some embodiments, the battery adhesive applicator further includes a drive device 40, which is connected to the first adhesive applicator 10 and the second adhesive applicator 20, and is used to sequentially drive the first adhesive applicator 10 and the second adhesive applicator 20 to move along the first direction X.

[0162] For example, when the battery adhesive applicator applies adhesive to the cylindrical electrode assembly 100, the drive device 40 may first drive the first adhesive applicator 10 to move closer to the electrode assembly 100 in the first direction X to attach the first adhesive tape 200 to the electrode assembly 100. After the first adhesive tape 200 is attached, the drive device 40 may then drive the second adhesive applicator 20 to move closer to the electrode assembly 100 in the first direction X to attach the second adhesive tape 300 to the electrode assembly 100.

[0163] Alternatively, the driving device 40 can first drive the second adhesive applicator 20 to move closer to the electrode assembly 100 in the first direction X to attach the second adhesive tape 300 to the electrode assembly 100. After the second adhesive tape 300 is attached, the driving device 40 can then drive the first adhesive applicator 10 to move closer to the electrode assembly 100 in the first direction X to attach the first adhesive tape 200 to the electrode assembly 100.

[0164] The first adhesive application mechanism 10 can be detachably connected to the drive device 40, or it can be integrally mounted on the drive device 40. The first adhesive application mechanism 10 can be directly connected to the drive device 40, or it can be constrained to the drive device 40 by other components.

[0165] The second adhesive application mechanism 20 can be detachably connected to the drive device 40, or it can be integrally mounted on the drive device 40. The second adhesive application mechanism 20 can be directly connected to the drive device 40, or it can be constrained to the drive device 40 by other components.

[0166] As an example, the drive unit 40 may be, but is not limited to, an electric cylinder, a servo motor, or a robotic arm.

[0167] The driving device 40 in the above technical solution optimizes the process and coordination of the adhesive application operation by sequentially driving the first adhesive application mechanism 10 and the second adhesive application mechanism 20 to move along the first direction X. This design not only significantly improves the automation level of the battery adhesive application equipment, but also avoids interference problems that may occur when the first adhesive tape 200 and the second adhesive tape 300 are applied simultaneously.

[0168] For example, when the first adhesive applicator 10 and the second adhesive applicator 20 operate in sequence, the order of tape application can be clear and unambiguous, which can avoid the risk of the first tape 200 and the second tape 300 sticking together and wrinkling at the ends to a certain extent.

[0169] In some embodiments, the driving device 40 includes a first driving member and a second driving member. The first driving member is connected to the first adhesive applicator 10 and is used to drive the first adhesive applicator 10 to move along the first direction X. The second driving member is connected to the second adhesive applicator 20 and is used to drive the second adhesive applicator 20 to move along the first direction X.

[0170] In some embodiments, the battery adhesive applicator further includes an adhesive preparation device 50, which is disposed near the first adhesive applicator 10 and the second adhesive applicator 20, and is used to provide a first adhesive tape 200 and a second adhesive tape 300.

[0171] For example, the adhesive preparation device 50 can be used to provide a first adhesive tape 200 and a second adhesive tape 300 in an independent sheet structure. Specifically, the adhesive preparation device 50 stores multiple sheets of the first adhesive tape 200 and multiple sheets of the second adhesive tape 300. Before applying adhesive to the electrode assembly 100, a robotic arm can place a sheet of the first adhesive tape 200 on the first adhesive application mechanism 10 and a sheet of the second adhesive tape 300 on the second adhesive application mechanism 20.

[0172] The adhesive preparation device 50 can also be used to provide a first adhesive tape 200 and a second adhesive tape 300 in the form of an elongated strip. Specifically, the adhesive preparation device 50 is equipped with a first tape roll and a second tape roll. Before applying adhesive to the electrode assembly 100, a portion of the first tape roll can be placed on the first adhesive application mechanism 10 by the supply mechanism and then cut by a cutter to form the first tape 200; and a portion of the second tape roll can be placed on the second adhesive application mechanism 20 by the supply mechanism and then cut by a cutter to form the second tape 300.

[0173] In some examples, the adhesive preparation device 50 may include a supply mechanism and a cutter. The supply mechanism includes a supply reel on which a first tape 200 and a second tape 300 are mounted, each reel being able to rotate smoothly to continuously supply tape.

[0174] In some examples, the adhesive preparation device 50 may also include a guiding mechanism that ensures that the tape is smoothly transported along a fixed path to the first adhesive application mechanism 10 and the second adhesive application mechanism 20 after being output from the reel.

[0175] In some examples, the adhesive preparation device 50 may also include a tension control mechanism to adjust the tension of the tape in real time during transport, thereby reducing the risk of adhesion failure caused by the tape being too loose or too tight.

[0176] The adhesive preparation device 50 of the above technical solution can efficiently provide the first adhesive tape 200 and the second adhesive tape 300, thereby helping to further improve the adhesive application efficiency of the battery adhesive application equipment.

[0177] In some embodiments, the first adhesive applicator 10 is used to attach the first adhesive tape 200 to the tab of the electrode assembly 100, and the second adhesive applicator 20 is used to attach the second adhesive tape 300 to the tab of the electrode assembly 100, with the first adhesive tape 200 and the second adhesive tape 300 connected end-to-end and wrapped around the outer periphery of the tab of the electrode assembly 100. This reduces the risk of short circuits caused by the tab of the motor assembly overlapping with the housing.

[0178] In some embodiments, the battery bonding equipment further includes a conveying device 60 for conveying the electrode assembly 100, with the first direction X perpendicular to the conveying direction of the conveying device 60. That is, the first bonding mechanism 10 and the second bonding mechanism 20 are respectively disposed on both sides of the conveying device 60 along the first direction X.

[0179] In some embodiments, the conveying device 60 includes a conveyor belt 61 and a fixing component 62. The fixing component 62 is fixedly connected to the conveyor belt 61 and is provided with a receiving cavity for accommodating the electrode assembly 100, so as to reduce the risk of the electrode assembly 100 moving or falling during the conveying process.

[0180] To better understand the battery adhesive application equipment provided in the embodiments of this application, based on the same inventive concept, embodiments of the above-mentioned battery adhesive application equipment in practical applications are described herein.

[0181] This application provides a battery adhesive applicator for applying adhesive to a cylindrical electrode assembly 100. The battery adhesive applicator includes a first adhesive applicator 10, a second adhesive applicator 20, and a clamping mechanism 30. The second adhesive applicator 20 is disposed opposite to the first adhesive applicator 10 along a first direction X, forming a gap between them for accommodating the electrode assembly 100. Both the first adhesive applicator 10 and the second adhesive applicator 20 are configured to be movable along the first direction X, which is perpendicular to the axial direction Y of the electrode assembly 100. Specifically, the first adhesive applicator 10 is used to attach a first adhesive tape 200 to the tab of the electrode assembly 100, and the second adhesive applicator 20 is used to attach a second adhesive tape 300 to the tab of the electrode assembly 100, with the first adhesive tape 200 and the second adhesive tape 300 connected end-to-end and surrounding the outer periphery of the tab of the electrode assembly 100.

[0182] A clamping mechanism 30 is used to clamp and fix the electrode assembly 100. The clamping mechanism 30 includes a first clamping member 31 and a second clamping member 32, which are disposed opposite to each other along a first direction X. At least one of the first clamping member 31 and the second clamping member 32 is configured to be movable along the first direction X. A first slot 311 is provided on the side of the first clamping member 31 facing the second clamping member 32. The two opposite side walls of the first slot 311 along a second direction Z are used to abut against the electrode assembly 100. The first direction X, the second direction Z, and the axial direction Y are mutually perpendicular. In the first direction X, and in the direction from which the first clamping member 31 points to the second clamping member 32, the size of the first slot 311 gradually increases along the second direction Z.

[0183] The first adhesive applicator 10 includes a first base 11, a first rod 12, a second rod 13, a first elastic element 14, and a third rod 15. Both the first rod 12 and the second rod 13 are rotatably connected to the first base 11, and their rotation axes are parallel to the axial direction Y. The first rod 12 and the second rod 13 are spaced apart along a second direction Z, and are used to attach the first adhesive tape 200 to the electrode assembly 100.

[0184] The first rod 12 includes a first connector 121, a first adsorption member 122, and a first roller 123. The first connector 121 is rotatably connected to the first base 11. The first adsorption member 122 is connected to the end of the first connector 121 away from the first base 11 and is used to adsorb the first adhesive tape 200. The first roller 123 is rotatably connected to the first adsorption member 122 and is disposed on the side of the first adsorption member 122 along the second direction Z close to the second rod 13. The rotation axis of the first roller 123 is parallel to the axial direction Y. The first adsorption member 122 is provided with a first receiving groove, and at least a portion of the first roller 123 is received in the first receiving groove.

[0185] The second rod 13 includes a second connector, a second suction member, and a second roller. The second connector is rotatably connected to the first base 11, and the second suction member is connected to the end of the second connector away from the first base 11. The second suction member is used to absorb the first adhesive tape 200. The second roller is rotatably connected to the second suction member and is located on the side of the second suction member close to the first rod 12 along the second direction Z. The rotation axis of the second roller is parallel to the axial direction Y. The second suction member has a second receiving groove, and at least a portion of the second roller is received in the second receiving groove.

[0186] A first elastic element 14 is connected between a first rod 12 and a second rod 13, and is used to apply a force to the first rod 12 and the second rod 13 that can drive them closer to each other. A third rod 15 is connected to a first base 11 and disposed between the first rod 12 and the second rod 13. The third rod 15 is configured to be telescopically oriented along a first direction X, and is used to compress the first adhesive tape 200. The third rod 15 includes a second elastic element 151 and a first pressure head 152. The second elastic element 151 is connected between the first base 11 and the first pressure head 152, and the elastic modulus of the first pressure head 152 is less than the elastic modulus of the second elastic element 151.

[0187] The second adhesive application mechanism 20 includes a second base, a third rod 15, a fourth rod, a third elastic element, and a fifth rod. Both the third rod 15 and the fourth rod are rotatably connected to the second base, and their rotation axes are parallel to the axial direction Y. The third rod 15 and the fourth rod are spaced apart along the second direction Z, and are used to attach the second adhesive tape 300 to the electrode assembly 100.

[0188] The third rod 15 includes a third connector, a third adsorption member, and a third roller. The third connector is rotatably connected to the second base, and the third adsorption member is connected to the end of the third connector away from the second base. The third adsorption member is used to adsorb the second tape 300. The third roller is rotatably connected to the third adsorption member and is located on the side of the third adsorption member along the second direction Z close to the fourth rod. The rotation axis of the third roller is parallel to the axial direction Y. The third adsorption member has a third receiving groove, and at least a portion of the third roller is received in the third receiving groove.

[0189] The fourth rod includes a fourth connector, a fourth adsorption member, and a fourth roller. The fourth connector is rotatably connected to the second base, and the fourth adsorption member is connected to the end of the fourth connector away from the second base. The fourth adsorption member is used to adsorb the second adhesive tape 300. The fourth roller is rotatably connected to the fourth adsorption member and is located on the side of the fourth adsorption member along the second direction Z close to the third rod 15. The rotation axis of the fourth roller is parallel to the axial direction Y. The fourth adsorption member has a fourth receiving groove, and at least a portion of the fourth roller is received in the fourth receiving groove.

[0190] A third elastic element is connected between the third rod 15 and the fourth rod, and is used to apply a force to the third rod 15 and the fourth rod to drive them closer together. A fifth rod is connected to the second base and disposed between the third rod 15 and the fourth rod. The fifth rod is configured to extend and retract along a first direction X, and is used to compress the second tape 300. The fifth rod includes a fourth elastic element and a second pressure head. The fourth elastic element is connected between the second base and the second pressure head, and the elastic modulus of the second pressure head is less than that of the fourth elastic element.

[0191] The battery bonding equipment described above, when bonding adhesive to the cylindrical electrode assembly 100, places the electrode assembly 100 in the gap between the first bonding mechanism 10 and the second bonding mechanism 20. The first bonding mechanism 10 and the second bonding mechanism 20 can complete the bonding work by bonding them together, simplifying the overall bonding action and thus effectively improving bonding efficiency. Furthermore, it simplifies the structural complexity of the battery bonding equipment, helping to reduce its manufacturing cost.

[0192] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0193] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery adhesive bonding device for applying adhesive to cylindrical electrode assemblies, the battery adhesive bonding device comprising: First adhesive application unit; The second adhesive applicator is disposed opposite to the first adhesive applicator along a first direction and forms a gap between them for accommodating the electrode assembly. Both the first adhesive applicator and the second adhesive applicator are configured to be movable along the first direction, which is perpendicular to the axial direction of the electrode assembly. The first adhesive applicator is used to attach a first adhesive tape to the electrode assembly, and the second adhesive applicator is used to attach a second adhesive tape to the electrode assembly, with the first and second adhesive tapes connected end to end and surrounding the outer periphery of the electrode assembly.

2. The battery adhesive applicator according to claim 1, wherein, The first adhesive applicator includes a first base, a first rod, and a second rod. Both the first rod and the second rod are rotatably connected to the first base, and the rotation axes of the first rod and the second rod are parallel to the axial direction. The first rod and the second rod are spaced apart along the second direction. The first rod and the second rod are used to attach the first tape to the electrode assembly. The first direction, the second direction and the axial direction are perpendicular to each other.

3. The battery adhesive applicator according to claim 2, wherein, The first rod includes a first connector and a first adsorption member. The first connector is rotatably connected to the first base, and the first adsorption member is connected to the end of the first connector away from the first base. The first adsorption member is used to adsorb the first tape.

4. The battery adhesive applicator according to claim 3, wherein, The first rod also includes a first roller, which is rotatably connected to the first adsorption member and disposed on the side of the first adsorption member close to the second rod along the second direction, and the rotation axis of the first roller is parallel to the axial direction.

5. The battery adhesive applicator according to claim 4, wherein, In the first direction, the end of the first roller away from the first connector is closer to the first connector than the side surface of the first suction member away from the first connector.

6. The battery adhesive applicator according to claim 4, wherein, The first adsorption element is provided with a first receiving groove, and at least a portion of the first roller is received in the first receiving groove.

7. The battery adhesive applicator according to any one of claims 2-6, wherein, The first adhesive applicator further includes a first elastic element, which is connected between the first rod and the second rod and is used to apply a force to the first rod and the second rod that can drive them to move closer to each other.

8. The battery adhesive applicator according to any one of claims 2-7, wherein, The first adhesive applicator further includes a third rod, which is connected to the first base and disposed between the first rod and the second rod. The third rod is configured to extend and retract along the first direction and is used to compress the first adhesive tape.

9. The battery adhesive applicator according to claim 8, wherein, The third rod includes a second elastic element and a first pressure head. The second elastic element is connected between the first base and the first pressure head, and the elastic modulus of the first pressure head is greater than that of the second elastic element.

10. The battery adhesive applicator according to any one of claims 1-9, wherein, The battery bonding equipment also includes a clamping mechanism for clamping and fixing the electrode assembly.

11. The battery adhesive applicator according to claim 10, wherein, The clamping mechanism includes a first clamping member and a second clamping member, the first clamping member and the second clamping member being disposed opposite to each other along the first direction, and at least one of the first clamping member and the second clamping member being configured to be movable along the first direction.

12. The battery adhesive applicator according to claim 11, wherein, The first clamping member has a first slot on the side facing the second clamping member. The two opposite side walls of the first slot along the second direction are used to fit with the electrode assembly. The first direction, the second direction and the axial direction are perpendicular to each other.

13. The battery adhesive applicator according to claim 12, wherein, In the first direction and in the direction in which the first clamping member points to the second clamping member, the size of the first slot gradually increases along the second direction.

14. The battery adhesive applicator according to any one of claims 1-13, wherein, The battery adhesive applicator further includes a driving device, which is connected to the first adhesive applicator and the second adhesive applicator, and is used to sequentially drive the first adhesive applicator and the second adhesive applicator to move along the first direction.

15. The battery adhesive applicator according to any one of claims 1-14, wherein, The battery adhesive applicator also includes an adhesive preparation device, which is located near the first adhesive applicator and the second adhesive applicator. The adhesive preparation device is used to provide the first adhesive tape and the second adhesive tape.

16. The battery adhesive applicator according to any one of claims 1-15, wherein, The first adhesive applicator is used to attach a first adhesive tape to the tab of the electrode assembly, and the second adhesive applicator is used to attach a second adhesive tape to the tab of the electrode assembly, so that the first adhesive tape and the second adhesive tape are connected end to end and wrapped around the outer periphery of the tab of the electrode assembly.

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