Adhesive tape adhering device, adhesive tape adhering method, and battery production line

Abstract

Disclosed are an adhesive tape adhering device, an adhesive tape adhering method, and a battery production line. The adhesive tape adhering device is used for adhering an adhesive tape to a workpiece, and comprises: an adhesive tape adhering mechanism, which comprises adhesive tape suction heads and is used for suctioning adhesive tapes; and a shaping mechanism, which comprises shaping assemblies, wherein each shaping assembly comprises a first shaping member and a second shaping member which are spaced apart, and the spacing space between the first shaping member and the second shaping member forms a shaping channel; and each adhesive tape suction head is configured to: pass through the shaping channel, enable one end portion of two end portions of the corresponding adhesive tape to be in contact with the first shaping member, pass through the gap between the adhesive tape suction head located in the shaping channel and the first shaping member, enable the other end portion of the two end portions of the adhesive tape to be in contact with the second shaping member, and pass through the gap between the adhesive tape suction head located in the shaping channel and the second shaping member, so that the two end portions of the adhesive tape are bent, and the adhesive tape passing through the shaping channel is adhered to a workpiece.

Description

Glue pasting device, glue pasting method and battery production line

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on the Chinese patent application with application number 202410257922.4, application date March 7, 2024, and invention name “Gluing device, glueing method and battery production line”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into the present disclosure as a reference. Technical Field

[0003] The present disclosure relates to the technical field of battery manufacturing, and in particular to a gluing device, a gluing method and a battery production line. Background Art

[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.

[0005] During the battery manufacturing process, especially in the gluing process, there are problems such as low gluing efficiency and unreliable gluing.

[0006] Summary of the Invention

[0007] In order to solve the above technical problems, the present disclosure provides a gluing device, a gluing method and a battery production line with high gluing efficiency and more reliable gluing.

[0008] The present disclosure is achieved through the following technical solutions.

[0009] A first aspect of the present disclosure provides a glue-applying device for sticking an adhesive tape to a workpiece, the glue-applying device comprising: a glue-applying mechanism including a glue-sucking head for sucking up the adhesive tape; a shaping mechanism including a shaping assembly, the shaping assembly including a first shaping member and a second shaping member arranged at intervals, the interval space between the first shaping member and the second shaping member constituting a shaping channel; wherein the glue-sucking head is configured to pass through the shaping channel and make one of the two end portions of the adhesive tape contact the first shaping member and pass through the gap between the glue-sucking head and the first shaping member in the shaping channel, the other of the two end portions of the adhesive tape contact the second shaping member and pass through the gap between the glue-sucking head and the second shaping member in the shaping channel, thereby bending the two end portions of the adhesive tape, and sticking the adhesive tape passing through the shaping channel to the workpiece.

[0010] The glue absorbing head and the shaping assembly cooperate to achieve bending of the two ends of the tape by contacting the first shaping member and the second shaping member, respectively. Furthermore, the tape, driven by the glue absorbing head, can pass through the shaping channel between the first and second shaping members. This allows the two ends of the tape to be shaped to extend generally along the direction of movement of the glue absorbing head. In other words, the first and second shaping members cooperate with the glue absorbing head to perform a shaping function. In this way, even if the location where the tape is to be applied is concave, the bent tape can fit more closely to the workpiece, providing a more secure adhesion, improving gluing efficiency, and reducing labor costs.

[0011] In some embodiments, the glue suction head includes a first side wall and a second side wall located on opposite sides of a first direction; the glue suction head is configured as follows: the glue suction head passes through the shaping channel along the second direction, and the two end portions of the tape are bent by the misalignment action between the first side wall and the first shaping member along the second direction and the misalignment action between the second side wall and the second shaping member along the second direction, and the second direction is perpendicular to the first direction.

[0012] By cooperating with the first shaping member and the second shaping member respectively on the two side walls (the first side wall and the second side wall) of the adhesive tape, the two ends of the adhesive tape can be bent along the two side walls respectively, thereby improving the bending and shaping effect, making it more suitable for fitting with the workpiece, making the adhesion more secure, and fully protecting the workpiece.

[0013] In some embodiments, the glue suction head includes a bottom wall, which is connected to the first side wall and the second side wall, the bottom wall is provided with a bottom wall suction hole, the first side wall is provided with a first side wall suction hole, and the second side wall is provided with a second side wall suction hole, the first side wall suction hole and the second side wall suction hole are respectively used to absorb the two ends of the tape, and the bottom wall suction hole is used to absorb the part between the two ends of the tape.

[0014] The glue suction head absorbs the part between the two ends of the tape through the suction holes in the bottom wall, and absorbs the two ends of the tape through the suction holes in the first side wall and the second side wall, so that the two ends of the tape can be kept in a bent state. In this way, in the process of the glue suction head passing the absorbed tape through the shaping channel and sticking it to the ear, the risk of tearing caused by the tape pulling the electrode assembly due to the two ends of the tape being stuck to the large surface of the electrode assembly can be avoided, thereby improving the reliability of the sticking.

[0015] In some embodiments, the first side wall suction hole, the second side wall suction hole, and the bottom wall suction hole are respectively connected to the negative pressure device via a gas channel.

[0016] The negative pressure device provides negative pressure to absorb the tape, and the negative pressure device releases the tape, making it convenient to control the suction head to absorb and release the tape.

[0017] In some embodiments, the first shaping member includes a first roller that can rotate freely around an axis, and the second shaping member includes a second roller that can rotate freely around an axis. The first roller and the second roller are parallel to each other and located at the same position in the second direction.

[0018] By means of the first roller and the second roller rotating freely around the axis, the friction between the two ends of the tape and the first roller and the second roller respectively when the tape passes through the shaping channel can be reduced, so that the tape can pass through the shaping channel more smoothly and complete the bending and gluing operations.

[0019] In some embodiments, the first shaping member includes a first shaping plate, and the second shaping member includes a second shaping plate.

[0020] When the adhesive suction head passes through the shaping channel, the first shaping plate and the second shaping plate respectively contact the two ends of the adhesive tape, bending the adhesive tape in a scraping manner to improve the bending effect.

[0021] In some embodiments, at least one of the first shaping member and the second shaping member is configured to float along the first direction.

[0022] Therefore, when the glue suction head passes through the shaping channel, one of the two end portions of the tape is squeezed between the first side wall and the first shaping piece, and the other end portion is squeezed between the second side wall and the second shaping piece. In this way, the two end portions are always bent along the first side wall and the second side wall respectively, thereby improving the shaping effect, being able to be more adaptably adhered to the tab, and being more firmly adhered, thereby fully protecting the tab.

[0023] In some embodiments, the shaping assembly includes a shaping bracket, a first shaping mounting frame and a second shaping mounting frame, the first shaping member is arranged on the first shaping mounting frame, the second shaping member is arranged on the second shaping mounting frame, a first elastic member is connected between the shaping bracket and the first shaping mounting frame, the first elastic member can be extended and retracted along the first direction so that the first shaping member floats along the first direction; and / or, a second elastic member is connected between the shaping bracket and the second shaping mounting frame, the second elastic member can be extended and retracted along the first direction so that the second shaping member floats along the first direction.

[0024] During the process of the glue suction head passing through the shaping channel, one of the two end portions of the tape is squeezed between the first side wall and the first shaping member, and the other end portion is squeezed between the second side wall and the second shaping member through the expansion and contraction of at least one of the first elastic member and the second elastic member along the first direction. In this way, the two end portions of the tape are bent respectively against the first side wall and the second side wall, thereby improving the shaping effect and being more adaptable to be adhered to the tab, resulting in a more secure fit.

[0025] In some embodiments, a first guide member is provided on the shaping bracket, the first guide member extends along the first direction, and the first shaping mounting frame is slidably provided on the first guide member; and / or, a second guide member is provided on the shaping bracket, the second guide member extends along the first direction, and the second shaping mounting frame is slidably provided on the second guide member.

[0026] The first guide member and the second guide member are respectively slidably matched with the first shaping mounting frame and the second shaping mounting frame, thereby improving the stability of the first shaping member and the second shaping member floating along the first direction and improving the bending reliability of the tape.

[0027] In some embodiments, the shaping mechanism also includes a shaping frame and a shaping drive member arranged on the shaping frame, the driving end of the shaping drive member is connected to the shaping bracket, and the shaping drive member can drive the shaping component to approach or move away from the workpiece along the second direction.

[0028] By driving the shaping component to approach or move away from the workpiece along the second direction through the shaping drive, the distance between the shaping component and the workpiece can be adjusted to adapt to different workpiece sizes.

[0029] In some embodiments, at least two groups of the glue suction heads are provided, and two adjacent groups of the glue suction heads are spaced apart along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction.

[0030] Multiple sets of adhesive tape suction heads can absorb multiple adhesive tapes at the same time. When the adhesive tape suction heads pass through the shaping channel, multiple adhesive tapes can be bent at the same time, so that the bent adhesive tapes can be pasted on multiple workpieces or multiple different parts of the same workpiece at the same time, thereby improving the pasting efficiency.

[0031] In some embodiments, two adjacent groups of the glue suction heads are configured to be able to move closer to or farther away from each other along the third direction.

[0032] As a result, the distance between the two sets of glue suction heads in the third direction can be adjusted, thereby adapting to more types of workpieces and improving versatility.

[0033] In some embodiments, the glue applying mechanism further includes: a glue suction head driving member, configured to drive at least one group of glue suction heads to move along the third direction.

[0034] The glue suction head is driven to move along the third direction by the glue suction head driving member, so as to automatically adjust the distance between the two groups of glue suction heads and efficiently adapt to more types of workpieces.

[0035] In some embodiments, each group of the glue suction heads includes two glue suction blocks, and the two glue suction blocks are spaced apart along the first direction and are configured to be able to approach or move away from each other along the first direction.

[0036] Therefore, the distance in the first direction between the two glue suction blocks of each group of glue suction heads can be adjusted, so as to adapt to more types of workpieces and improve versatility.

[0037] In some embodiments, the glue-applying device further includes: a glue supply mechanism, comprising at least two glue supply units, each of the glue supply units being configured to be switchable between a glue changing station and a glue supply station, the glue suction head sucking the adhesive tape cut from the film roll carried by the glue supply unit at the glue supply station, and the glue changing station being used to replace the film roll.

[0038] Each glue supply unit can switch between the glue changing station and the glue supply station, which can realize the replacement of film rolls without stopping the machine, continuously provide tape to the glue head, and improve production efficiency.

[0039] In some embodiments, when any one of the at least two glue supply units is located at the glue supply station, the remaining glue supply units are located at their respective glue changing stations.

[0040] Therefore, each glue supply unit can independently switch between the glue supply station and the glue changing station, making it convenient for each glue supply unit to change the film.

[0041] In some embodiments, the glue supply mechanism also includes a slide rail and at least two glue supply driving components, each of the glue supply units can be slidably arranged on the slide rail, and each of the glue supply driving components is configured to drive the glue supply unit to slide between the glue changing station and the glue supply station.

[0042] Each glue supply unit is driven by an independent glue supply drive component, which facilitates the separate control of each glue supply unit and improves the reliability of each glue supply unit when switching.

[0043] In some embodiments, each of the glue supply units includes a glue supply bracket, a film installation shaft and a glue feeding mechanism. The film installation shaft is respectively arranged on both sides of the glue supply bracket in the third direction, and the glue feeding mechanism is respectively arranged on both sides of the glue supply bracket in the third direction.

[0044] As a result, each glue supply unit can deliver two adhesive tapes at the same time, so that the glue suction head can absorb two adhesive tapes at a time, improving the glue feeding efficiency and further improving the glue laminating efficiency.

[0045] In some embodiments, the glue feeding mechanism includes a glue pulling mechanism, a glue pressing mechanism and a glue cutting mechanism. Along the conveying direction of the tape, the glue pressing mechanism, the glue cutting mechanism and the glue pulling mechanism are arranged in sequence; the glue pulling mechanism is used to pull the tape to unwind, the glue pressing mechanism is used to press the tape in the second direction, and the glue cutting mechanism is used to cut the tape.

[0046] In this way, the adhesive tape can be automatically provided to the adhesive head, thereby improving the adhesive feeding efficiency and thus improving the adhesive laminating efficiency.

[0047] In some embodiments, the glue-applying mechanism further includes a movable frame, which is connected to the glue-absorbing head and is used to drive the glue-absorbing head to move along the first direction and the second direction respectively.

[0048] As a result, the glue suction head can automatically complete the glue suction and glue application operations, thereby improving the glue application efficiency.

[0049] The second aspect of the present disclosure provides a glue-applying method for sticking an adhesive tape to a workpiece, the glue-applying method comprising: a glue-sucking step in which a glue-sucking head sucks the adhesive tape; a tape-shaping step in which the glue-sucking head passes through a shaping channel formed by the interval space between a first shaping member and a second shaping member, so that the two end portions of the sucked adhesive tape contact the first shaping member and the second shaping member respectively, thereby bending the two end portions of the adhesive tape; a glue-applying step in which the glue-sucking head sticks the adhesive tape passing through the shaping channel to the workpiece, wherein, in the tape-shaping step, one end portion of the two end portions of the adhesive tape contacts the first shaping member and passes through the gap between the glue-sucking head and the first shaping member in the shaping channel, and the other end portion of the two end portions of the adhesive tape contacts the second shaping member and passes through the gap between the glue-sucking head and the second shaping member in the shaping channel.

[0050] The glue suction head and shaping assembly work together to bring the two ends of the tape into contact with the two shaping pieces, bending and shaping the tape. This bend and shaping allows the tape to fit more accurately and securely with the workpiece's recessed structure, improving production efficiency and reducing labor costs. During battery manufacturing, the connection between the two tabs and the base of each tab are effectively protected. The gluing device automatically completes the tab gluing operation, improving gluing efficiency and, in turn, battery production efficiency and reducing labor costs.

[0051] In some embodiments, after the tape shaping step and before the glue applying step, the glue applying method further includes: a tape bending and holding step, wherein the two ends of the bent tape are respectively sucked through the first side wall suction hole of the first side wall and the second side wall suction hole of the second side wall of the glue suction head.

[0052] The glue suction head absorbs the part between the two ends of the tape through the suction holes in the bottom wall, and absorbs the two ends of the tape through the suction holes in the first side wall and the second side wall, so that the two ends of the tape can be kept in a bent state. In this way, in the process of the glue suction head passing the absorbed tape through the shaping channel and sticking it to the ear, the risk of tearing caused by the tape pulling the electrode assembly due to the two ends of the tape being stuck to the large surface of the electrode assembly can be avoided, thereby improving the reliability of the sticking.

[0053] In some embodiments, the glue application method further includes: a glue supply step, which includes: switching the glue supply unit of the glue roll to be replaced at the glue supply station from the glue supply station to the glue changing station; switching the glue supply unit of the replaced film at the glue changing station from the glue changing station to the glue supply station; and the glue supply unit at the glue supply station provides the adhesive tape to the glue suction head.

[0054] The glue supply unit can switch between the glue changing station and the glue supply station, which can realize the replacement of film rolls without stopping the machine, continuously provide tape to the glue head, and improve production efficiency.

[0055] In some embodiments, the glue supply unit at the glue supply station provides the tape to the glue suction head, including: unwinding the tape by pulling the glue pulling mechanism of the glue supply unit at the glue supply station; pressing the tape by the glue pressing mechanism of the glue supply unit at the glue supply station; and cutting the tape by the glue cutting mechanism of the glue supply unit at the glue supply station.

[0056] In this way, the adhesive tape can be automatically provided to the adhesive head, thereby improving the adhesive feeding efficiency and thus improving the adhesive laminating efficiency.

[0057] A third aspect of the present disclosure provides a battery production line, comprising: a providing device for providing a workpiece; and a gluing device as described in any of the above embodiments.

[0058] In some embodiments, the workpiece includes at least two electrode assemblies, the tabs of two adjacent electrode assemblies are connected to each other, and the tabs are located in a recessed space between the two adjacent electrode assemblies; the glue suction head is constructed as follows: the tape passing through the shaping channel is adhered to the tabs and covers the tabs.

[0059] Effects of the invention:

[0060] Through the present disclosure, the bending and shaping of the adhesive tape can be achieved, and the bent and shaped adhesive tape can fit the workpiece more adaptably, adhere more firmly, and improve the gluing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0062] FIG1 is a schematic structural diagram of a glue application device provided in some embodiments of the present disclosure;

[0063] FIG2 is a schematic structural diagram of a glue suction head provided in some embodiments of the present disclosure;

[0064] FIG3 is a front view of a glue suction head provided in some embodiments of the present disclosure;

[0065] FIG4 is a side view of a glue suction head provided by some embodiments of the present disclosure;

[0066] FIG5 is a schematic structural diagram of a shaping mechanism provided in some embodiments of the present disclosure;

[0067] FIG6 is a top view of a shaping mechanism provided in some embodiments of the present disclosure;

[0068] FIG7 is a schematic structural diagram of a glue supply unit provided in some embodiments of the present disclosure;

[0069] Figure 8(a) is a top view of the electrode assembly before the tape is attached;

[0070] FIG8( b ) is a front view of the electrode assembly before the tape is attached;

[0071] FIG9 is a flow chart of a glue application method provided by some embodiments of the present disclosure;

[0072] FIG10 is a flow chart of a glue application method provided by other embodiments of the present disclosure;

[0073] FIG11 is a flow chart of a glue application method provided by yet other embodiments of the present disclosure;

[0074] FIG12 is a flow chart of a glue application method provided in some further embodiments of the present disclosure.

[0075] Explanation of reference numerals 100 - glue sticking device; 1 - glue sticking mechanism; 10 - glue sucking head; 101 - first side wall; 101a - first side wall suction hole; 102 - second side wall; 103 - bottom wall; 103a - bottom wall suction hole; 11 - glue sucking block; 11a - adjustment hole; 12 - glue sucking head driving member; 121 - first support frame; 122 - second support frame; 13 - glue sucking head bracket; 14 - guide rail; 15 - fixing block; 15a - positioning hole; 2 - shaping mechanism; 20 - shaping assembly; 20a - shaping channel; 21 - first shaping member; 22 - second shaping member; 23 - shaping bracket; 24 - First shaping mounting frame; 25-second shaping mounting frame; 261-first guide member; 262-second guide member; 27-shaping frame; 28-shaping drive member; 291-first elastic member; 292-second elastic member; 3-glue supply mechanism; 30-glue supply unit; 30a-first glue supply unit; 30b-second glue supply unit; 301-slide rail; 302-glue drive member; 31-glue supply bracket; 32-glue mounting shaft; 33-glue feeding mechanism; 331-glue pulling mechanism; 332-glue pressing mechanism; 333-glue cutting mechanism; 200-tape; 300-electrode assembly; 310-tab; 320-large surface; A-glue changing station; A1-first glue changing station; A2-second glue changing station; B-glue supply station; x-first direction; z-second direction; y-third direction. DETAILED DESCRIPTION

[0076] The following embodiments of the technical solution of the present disclosure are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present disclosure and are therefore only examples and are not intended to limit the scope of protection of the present disclosure.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which the present disclosure belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure; the terms "including" and "having" and any variations thereof in the specification of the present disclosure and the above-mentioned drawings are intended to cover non-exclusive inclusions.

[0078] In the description of the embodiments of the present disclosure, technical terms such as "first," "second," and "third" are used solely to distinguish different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means more than two, unless otherwise specifically defined.

[0079] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0080] In the description of the embodiments of the present disclosure, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0081] In the description of the embodiments of the present disclosure, the orientations or positional relationships indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present disclosure.

[0082] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0083] In the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0084] Hereinafter, the present disclosure will be described in detail.

[0085] At present, the application of new energy batteries in life and industry is becoming more and more extensive. New energy batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as in aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding. In the battery production and manufacturing process, multiple parts of the battery need to be pasted with tape to protect the battery. When pasting tape on the local flat structure of the battery, it can be automated through a gluing device to improve battery production efficiency and reduce labor costs. When pasting tape on the local uneven structure of the battery (such as a concave structure), most of the current methods use manual pasting, which is not only inefficient but also increases labor costs.

[0086] For example, during the electrode assembly pairing process in battery manufacturing, first, tape is applied to the interconnected tabs between two flat electrode assemblies. Then, one of the electrode assemblies is rotated 180° toward the other, so that the two electrode assemblies form a pair of electrode assemblies with a mirror-symmetrical structure. During the rotation of the electrode assemblies, the interconnected tabs will bend, the connection points are prone to cracking, and the base of the tabs is also at risk of breaking. Therefore, before the electrode assemblies are rotated and paired, covering the connection points and bases of the two tabs with tape can fully protect the tabs. Since a recessed area is formed between the opposing ends of the two electrode assemblies and the interconnected tabs are located in this recessed area, the opposing ends of the two electrode assemblies and the connected tabs together form a roughly U-shaped recessed structure. When applying the tape, if you want to completely cover the base of the tabs, you need to shape the tape into a shape that matches the recessed structure. Therefore, there is an urgent need for a tape-applying device that can shape the tape so that the shaped tape can be more appropriately attached to a concave structure like this.

[0087] In view of this, the present disclosure provides a glue-applying device for sticking adhesive tape to a workpiece, the glue-applying device includes a glue-applying mechanism and a shaping mechanism, the glue-applying mechanism includes a glue suction head for sucking up the adhesive tape; the shaping mechanism includes a shaping assembly, the shaping assembly includes a first shaping piece and a second shaping piece spaced apart, and the spacing space between the first shaping piece and the second shaping piece constitutes a shaping channel; wherein the glue suction head is configured to: be able to pass through the shaping channel and make the two end portions of the adhesive tape contact the first shaping piece and the second shaping piece respectively, thereby bending the two end portions of the adhesive tape, and the adhesive tape passing through the shaping channel is stuck to the workpiece.

[0088] Through the cooperation between the glue suction head and the shaping component, the two ends of the tape can be bent and shaped. The bent and shaped tape can fit the workpiece more appropriately, stick more firmly, improve efficiency and reduce labor costs.

[0089] The workpiece can be a pair of electrode assemblies for a battery. Of course, the workpiece can also be other parts with a concave structure, such as a part with a roughly U-shaped structure, which is also applicable. That is, the gluing device of the embodiment of the present disclosure can be used in the battery production process, for example, for gluing the tabs in the process of pairing the electrode assemblies of the battery. Of course, those skilled in the art should understand that the gluing device provided by the embodiment of the present disclosure is not only used for gluing in the battery production and manufacturing process, but can also be used for gluing other workpieces that require gluing.

[0090] In the embodiment of the present disclosure, the battery may be a battery cell.

[0091] The battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be recharged to activate the active material after the battery cell is discharged and can be used continuously.

[0092] The battery cells may be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present disclosure.

[0093] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator. The tabs include a positive tab and a negative tab. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are inserted and removed between the positive and negative electrodes. The separator is placed between the positive and negative electrodes to prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0094] In some embodiments, the battery cell further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This disclosure does not specifically limit the type of electrolyte, and the electrolyte may be selected based on needs. The electrolyte may be liquid, gel, or solid.

[0095] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (e.g., polypropylene), a composite metal housing (e.g., a copper-aluminum composite housing), or an aluminum-plastic film.

[0096] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in the present disclosure.

[0097] In some embodiments, the housing includes an end cap and a shell. The shell has an opening, and the end cap closes the opening to form a sealed space for accommodating the electrode assembly, electrolyte, and other substances. The shell may have one or more openings. One or more end caps may also be provided.

[0098] In some embodiments, the housing is provided with at least one electrode terminal, which is electrically connected to the tab. The electrode terminal may be directly connected to the tab or indirectly connected to the tab via a connecting member. The electrode terminal may be provided on the end cap or on the housing.

[0099] In some embodiments, the housing is provided with a pressure relief mechanism for releasing the internal pressure of the battery cell.

[0100] In the embodiments of the present disclosure, the battery may also be a single physical module including one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel or in hybrid via a busbar.

[0101] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to FIG. 1 to FIG. 7 .

[0102] The embodiment of the present disclosure provides a glue-applying device 100 for sticking an adhesive tape 200 to a workpiece. The glue-applying device 100 includes a glue-applying mechanism 1 and a shaping mechanism 2. The glue-applying mechanism 1 includes a glue-sucking head 10 for sucking up the adhesive tape. The shaping mechanism 2 includes a shaping assembly 20, and the shaping assembly 20 includes a first shaping member 21 and a second shaping member 22 that are spaced apart. The space between the first shaping member 21 and the second shaping member 22 constitutes a shaping channel 20a. The glue-sucking head 10 is configured to pass through the shaping channel 20a and bring the two ends of the adhesive tape into contact with the first shaping member 21 and the second shaping member 22, respectively, so that the two ends of the adhesive tape are bent, and the adhesive tape passing through the shaping channel 20a is stuck to the workpiece.

[0103] The gluing device 100 can be used in the battery production process, for example, for gluing the tabs in the battery electrode assembly pairing process. Referring to Figures 8(a) and 8(b), the workpiece is an electrode assembly 300 of a battery as an example. In the pairing process of two electrode assemblies, a recessed area is formed between the opposite ends of the two electrode assemblies 300. The interconnected tabs 310 of the two electrode assemblies 300 are located in the recessed area. Therefore, the opposite ends of the two electrode assemblies 300 and the connected tabs 310 together form a roughly U-shaped recessed structure. When applying the tape 200, if you want to completely cover the base of the tab, you need to shape the tape 200 into a shape that matches the recessed structure, such as a roughly U-shape.

[0104] The adhesive suction head 10 can pass through the shaping channel 20 a and make the two ends of the adhesive tape contact the first shaping member 21 and the second shaping member 22 respectively, so that the two ends of the adhesive tape are bent.

[0105] The ability of the glue sucking head 10 to pass through the shaping channel 20a can be understood as at least one of the glue sucking head 10 and the shaping assembly 20 moving toward each other, thereby allowing the glue sucking head 10 to pass through the shaping channel 20a. For example, referring to Figures 1, 2, and 5, the shaping assembly 20 can be relatively stationary, and the glue sucking head 10 moves toward the shaping assembly 20 along the second direction z (moving from top to bottom in Figure 5), allowing the glue sucking head 10 to pass through the shaping channel 20a; alternatively, the glue sucking head 10 can be relatively stationary, and the shaping assembly 20 moves toward the glue sucking head, allowing the glue sucking head 10 to pass through the shaping channel 20a; or the glue sucking head 10 and the shaping assembly 20 move toward each other, allowing the glue sucking head 10 to pass through the shaping channel 20a.

[0106] The adhesive absorbing head 10 can pass through the shaping channel 20a and bring the two ends of the adhesive tape into contact with the first shaping member 21 and the second shaping member 22, respectively, thereby bending the two ends of the adhesive tape. As the adhesive absorbing head 10 passes through the shaping channel 20a, one end of the adhesive tape 200 contacts the first shaping member 21 and passes through the gap between the adhesive absorbing head 10 and the first shaping member 21 in the shaping channel 20a, thereby bending the one end. The other end of the adhesive tape 200 contacts the second shaping member 22 and passes through the gap between the adhesive absorbing head 10 and the second shaping member 22 in the shaping channel 20a, thereby bending the other end. The two bent ends are thus formed into a shape that generally extends along the second direction Z.

[0107] For example, in this embodiment, the shaping assembly 20 is relatively stationary, and the adhesive absorbing head 10 moves along the second direction z (e.g., the vertical direction) toward the shaping assembly 20, allowing the adhesive absorbing head 10 to pass through the shaping channel 20a. When the adhesive absorbing head 10 absorbs the adhesive tape 200, the two ends of the adhesive tape 200 extend beyond the two side walls of the adhesive absorbing head 10. During the process of the adhesive absorbing head 10 passing through the shaping channel 20a, the two ends of the adhesive tape 200 interfere with and contact the first shaping member 21 and the second shaping member 22, respectively, causing the two ends of the adhesive tape 200 to bend upward.

[0108] The tape 200 that passes through the shaping channel 20a can be pasted on the workpiece while the two ends of the tape 200 interfere with the first shaping member 21 and the second shaping member 22 and are bent, that is, the tape 200 is pasted on the workpiece while being bent; or the two ends of the tape 200 are bent before being pasted on the workpiece. During the process of pasting the tape, at least a portion of the glue suction head 10 passes through the shaping channel 20a in one direction (for example, from top to bottom along the second direction z) and is located in the shaping channel 20a. In addition, although not shown in the figure, it can be understood that in some embodiments, there is a conveying mechanism for the electrode assembly 300, such as a conveyor belt, below the shaping channel 20a; in other embodiments, there is a supporting platform for positioning the electrode assembly 300 below the shaping channel 20a.

[0109] In one example, referring to Figures 1, 2, 5, 6, 8(a) and 8(b), when the glue sticking device sticks the tape on the pole ear, the electrode assembly 300 can be located directly below the shaping channel 20a. When the glue suction head 10 passes through the shaping channel 20a, the tape 200 can be bent and stuck to the pole ear. Specifically, the two ends of the tape 200 are respectively in interference contact with the first shaping member 21 and the second shaping member 22, while the middle parts of the two ends are bonded to the interconnected pole ears 310, and the bent parts of the two ends of the tape 200 are respectively bonded to the opposite end surfaces of the two electrode assemblies 300. When the two ends of the tape 200 are completely separated from the first shaping member 21 and the second shaping member 22, the two ends of the tape 200 are also all bonded to the opposite end surfaces of the electrode assembly 300, thereby fully covering the pole ear.

[0110] In another example, during the process of the glue suction head 10 passing through the shaping channel 20a, the tape 200 can be bent and then pasted to the tabs. Specifically, after the two ends of the tape 200 are bent in interference contact with the first shaping piece 21 and the second shaping piece 22 respectively, the glue suction head 10 is used to stick the middle part at the two ends of the tape 200 to the interconnected tabs 310, and the bent parts at the two ends of the tape 200 are stuck to the opposite end surfaces of the two tab components, thereby fully covering the tabs.

[0111] Thus, through the mutual cooperation between the glue suction head 10 and the shaping assembly 20, the two ends of the tape 200 are respectively brought into contact with the two shaping members to bend and shape the two ends of the tape 200. After the bending and shaping, the tape 200 can be more adaptively fitted with the recessed structure of the workpiece, the adhesion is more secure, and production efficiency can be improved and labor costs can be reduced. During the battery production process, the position where the two tabs are connected to each other and the roots of each tab are effectively protected, and the tab gluing operation is automatically completed by the gluing device, thereby improving the gluing efficiency, thereby improving the battery production efficiency and reducing labor costs.

[0112] In some embodiments, the glue suction head 10 includes a first side wall 101 and a second side wall 102 located on opposite sides along a first direction x; the glue suction head is configured as follows: the glue suction head 10 passes through the shaping channel 20a along a second direction z, and the two ends of the tape 200 are bent by the misalignment action between the first side wall 101 and the first shaping member 21 along the second direction z and the misalignment action between the second side wall 102 and the second shaping member 22 along the second direction z, and the second direction z is perpendicular to the first direction x.

[0113] When the adhesive tape 200 is sucked by the adhesive suction head 10 , two ends of the adhesive tape 200 extend beyond the first side wall 101 and the second side wall 102 , respectively.

[0114] 2 , 5 and 6 , the misalignment between the first side wall 101 and the first shaping member 21 along the second direction z and the misalignment between the second side wall 102 and the second shaping member 22 along the second direction z cause the two ends of the adhesive tape 200 to bend. This can be understood as follows: during the process of the adhesive suction head 10 passing through the shaping channel 20a along the second direction z (for example, the up and down direction), one of the two ends of the adhesive tape 200 is restricted between the first side wall 101 and the first shaping member 21, and the other end is restricted between the second side wall 102 and the second shaping member 22, thereby improving the bending effect. "Restriction" can be understood as one end of the adhesive tape 200 being squeezed between the first side wall 101 and the first shaping member 21, causing its opposite sides to be squeezed into contact with the first side wall 101 and the first shaping member 21 and bend, respectively, while the other end is squeezed between the second side wall 102 and the second shaping member 22, causing its opposite sides to be squeezed into contact with the second side wall 102 and the second shaping member 22 and bend, respectively. Of course, "restriction" can also be understood as the two ends of the adhesive tape 200 being in non-compressive contact between the first side wall 101 and the first shaping member 21 and between the second side wall 102 and the second shaping member 22, respectively. That is, when the adhesive tape 10 passes through the shaping channel 20a along the second direction z (e.g., the vertical direction), one end of the adhesive tape 200 is located in the gap between the first side wall 101 and the first shaping member 21, and the other end is located in the gap between the second side wall 102 and the second shaping member 22, which can also improve the bending effect of the two ends of the adhesive tape 10.

[0115] By staggering the two side walls (the first side wall 101 and the second side wall 102) of the glue suction head 10 with the first shaping member 21 and the second shaping member 22 respectively, the two end portions of the tape 200 can be bent basically along the two side walls, thereby improving the bending and shaping effect, and being more adaptable to fit the tabs between the two electrode assemblies 300, so that the adhesion is more secure and the tabs are fully protected.

[0116] In some embodiments, referring to Figures 2 and 3, the glue suction head 10 includes a bottom wall 103, which is connected to the first side wall 101 and the second side wall 102. The bottom wall 103 is provided with a bottom wall suction hole 103a, the first side wall 101 is provided with a first side wall suction hole 101a, and the second side wall 102 is provided with a second side wall suction hole (not marked in the figure). The first side wall suction hole 101a and the second side wall suction hole are respectively used to absorb the two end portions of the adhesive tape 200, and the bottom wall suction hole 103a is used to absorb the portion between the two end portions of the adhesive tape 200.

[0117] The glue suction head 10 absorbs the part between the two ends of the tape 200 through the bottom wall suction hole 103a, and absorbs the two ends of the tape 200 through the first side wall suction hole 101a and the second side wall suction hole, and can keep the two ends in a bent state. In this way, in the process of the glue suction head 10 sticking the absorbed tape 200 along the second direction z (for example, the up and down direction) through the shaping channel 20a to the electrode ear 310, it can avoid the two ends of the tape 200 sticking to the large surface 320 of the electrode assembly 300 (as shown in Figure 8 (b)), which may cause the tape 200 to pull the electrode assembly 300 and cause the risk of tearing, thereby improving the reliability of the pasting.

[0118] For example, the first side wall suction hole 101a, the second side wall suction hole and the bottom wall suction hole 103a can be connected to a negative pressure device (not shown) via gas channels respectively.

[0119] The negative pressure device provides a negative pressure to absorb the adhesive tape 200, and the negative pressure device releases the adhesive tape 200, so as to facilitate the control of the adhesive suction head to absorb and release the adhesive tape.

[0120] For example, the number of the first side wall suction hole 101 a , the second side wall suction hole and the bottom wall suction hole 103 a may be 1, 2, 3 or more.

[0121] 5 and 6 , the first shaping member 21 includes a first roller that can rotate freely around an axis, and the second shaping member 22 includes a second roller that can rotate freely around an axis. The first roller and the second roller are parallel to each other and located at the same position in the second direction z.

[0122] The first and second rollers freely rotating about their axes can be understood as meaning that they can rotate about their axes under the action of an external contact force, i.e., the first and second rollers do not require additional drive components to provide the necessary power for rotation. For example, as the adhesive suction head 10 passes through the shaping channel 20a along the second direction z, the ends of the adhesive tape 200 contact the first and second rollers, respectively, and the adhesive forces between the adhesive surfaces at the two ends and the first and second rollers drive the first and second rollers to rotate.

[0123] By means of the first roller and the second roller that rotate freely around the axis, when the glue suction head 10 passes through the shaping channel 20a along the second direction z, the friction between the two ends of the adhesive tape 200 and the first roller and the second roller respectively can be reduced, so that the glue suction head 10 can pass through the shaping channel 20a more smoothly and complete the bending and gluing operations.

[0124] In some embodiments, the first shaping member 21 includes a first shaping plate, and the second shaping member 22 includes a second shaping plate.

[0125] When the adhesive suction head 10 passes through the shaping channel 20a along the second direction z, the first shaping plate and the second shaping plate respectively contact the two ends of the adhesive tape 200 to bend the adhesive tape 200 in a scraping manner, thereby improving the bending effect.

[0126] In some embodiments, at least one of the first shaping member 21 and the second shaping member 22 is configured to float along the first direction x.

[0127] It can be understood that the first shaping member 21 can move toward or away from the second shaping member 22 along the first direction x. For example, the first shaping member 21 is stationary, and the second shaping member 22 moves toward or away from the first shaping member 21 along the first direction x; or the second shaping member 22 is stationary, and the first shaping member 21 moves toward or away from the second shaping member 22 along the first direction x; or both the first shaping member 21 and the second shaping member 22 can move toward or away from each other.

[0128] Therefore, when the glue suction head 10 passes through the shaping channel 20a along the second direction z, one of the two end portions of the tape 200 can be squeezed between the first side wall 101 and the first shaping member 21, and the other end portion can be squeezed between the second side wall 102 and the second shaping member 22. In this way, the two end portions are always bent along the first side wall 101 and the second side wall 102 respectively, thereby improving the shaping effect, being able to be more adaptably adhered to the tab, and being more firmly adhered, thereby fully protecting the tab.

[0129] In some embodiments, referring to Figures 5 and 6, the shaping assembly 20 includes a shaping bracket 23, a first shaping mounting frame 24 and a second shaping mounting frame 25, the first shaping member 21 is arranged on the first shaping mounting frame 24, and the second shaping member 22 is arranged on the second shaping mounting frame 25, and a first elastic member 291 is connected between the shaping bracket 23 and the first shaping mounting frame 24, and the first elastic member 291 can be extended and retracted along the first direction x so that the first shaping member 21 floats along the first direction x; and / or, a second elastic member 292 is connected between the shaping bracket 23 and the second shaping mounting frame 25, and the second elastic member 292 can be extended and retracted along the first direction x so that the second shaping member 22 floats along the first direction x.

[0130] The shaping bracket 23 can be a frame structure. The first shaping mounting frame 24 is used to support the first shaping member 21, and the second shaping mounting frame 25 is used to support the second shaping member 22. For example, when the first shaping member 21 is a first rotating roller and the second shaping member 22 is a second rotating roller, the first shaping member 21 is rotatably mounted on the first shaping mounting frame 24, and the second shaping member 22 is rotatably mounted on the second shaping mounting frame 25.

[0131] During the process of the glue suction head 10 passing through the shaping channel 20a along the second direction z, one of the two end portions of the tape 200 is squeezed between the first side wall 101 and the first shaping member 21, and the other end portion is squeezed between the second side wall 102 and the second shaping member 22 by at least one of the first elastic member 291 and the second elastic member 292 extending and contracting along the first direction x. In this way, the surfaces opposite to the adhesive surfaces (such as non-adhesive surfaces) of the two end portions are always bent against the first side wall 101 and the second side wall 102, respectively, thereby improving the shaping effect and being more adaptable to the tab, resulting in a more secure fit.

[0132] In some embodiments, a first guide member 261 is provided on the shaping bracket 23, the first guide member 261 extends along the first direction x, and the first shaping mounting frame 24 is slidably provided on the first guide member 261; and / or, a second guide member 262 is provided on the shaping bracket 23, the second guide member 262 extends along the first direction x, and the second shaping mounting frame 25 is slidably provided on the second guide member 262.

[0133] One end of the first guide member 261 can be fixed to a side plate of the shaping bracket 23, and the other end passes through the sliding hole on the first shaping mounting frame 24, so as to realize the sliding connection between the first shaping mounting frame 24 and the first guide member 261, so that the first shaping member 21 can float more smoothly along the first direction x.

[0134] One end of the second guide member 262 can be fixed to the other side plate of the shaping bracket 23, and the other end passes through the sliding hole on the second shaping mounting frame 25, so as to realize the sliding connection between the second shaping mounting frame 25 and the second guide member 262, so that the second shaping member 22 can float more smoothly along the first direction x.

[0135] In some embodiments, the shaping mechanism 2 also includes a shaping frame 27 and a shaping drive 28 arranged on the shaping frame 27. The driving end of the shaping drive 28 is connected to the shaping bracket 23. The shaping drive 28 can drive the shaping component 20 to approach or move away from the workpiece along the second direction z.

[0136] The shaping drive 28 drives the shaping assembly 20 to approach or move away from the workpiece along the second direction z, so that the distance between the shaping assembly 20 and the workpiece can be adjusted to adapt to different workpiece sizes.

[0137] The shaping drive member 28 may be a cylinder, and the driving end of the cylinder can be extended and retracted along the second direction z, thereby driving the shaping assembly 20 to approach or move away from the workpiece along the second direction z.

[0138] The shaping drive member 28 can also be a driving structure such as a hydraulic cylinder, a linear motor, or a combination of a motor and a transmission component. The transmission component can be a belt transmission component, a chain transmission component, a screw nut transmission component, etc.

[0139] In some embodiments, referring to FIG. 1 to FIG. 4 , at least two groups of glue suction heads 10 are provided, and two adjacent groups of glue suction heads 10 are spaced apart along a third direction y, and the third direction y is perpendicular to the first direction x and the second direction z.

[0140] The glue suction heads 10 can be arranged in two, three, four, five or more groups.

[0141] Multiple groups of glue suction heads 10 can absorb multiple tapes 200 at the same time. When the glue suction heads 10 pass through the shaping channel 20a along the second direction z, multiple tapes 200 can be bent at the same time, so that they can be pasted on multiple workpieces or multiple different parts of the same workpiece at the same time, thereby improving the pasting efficiency.

[0142] For example, referring to Figures 8(a) and 8(b), when the adhesive tape is applied to a pair of electrode assemblies by the adhesive tape application device 100, two tabs 310 arranged along the third direction y are extended from one end of the stack of each electrode assembly. Two sets of adhesive tape application heads 10 can be provided. When the adhesive tape application heads 10 pass through the shaping channel 20a along the second direction z, the two sets of adhesive tape application heads 10 can simultaneously bend the two adhesive tapes 200, thereby simultaneously applying the adhesive tapes to the two tabs 310, thereby improving the application efficiency.

[0143] In some embodiments, two adjacent groups of glue suction heads 10 are configured to move closer to or farther from each other along the third direction y, thereby adjusting the distance between the two groups of glue suction heads 10 in the third direction y to accommodate more types of workpieces.

[0144] At least one of the two adjacent groups of glue suction heads 10 can move closer to or farther from each other relative to the other group. That is, only one of the two adjacent groups of glue suction heads 10 can move closer to or farther from the other group, or both groups can move closer to or farther from each other.

[0145] For example, for different types of batteries, when the electrode assemblies are paired, the spacing between the two tabs 310 along the third direction y may be different. By adjusting the distance between the two sets of glue suction heads 10 in the third direction y to match the spacing between the two tabs 310, glue sticking operations can be performed for different types of batteries, thereby improving versatility.

[0146] In some embodiments, the glue applying mechanism 1 further includes a glue suction head driving member for driving at least one group of glue suction heads 10 to move along the third direction y.

[0147] For example, each group of glue suction heads 10 can be driven by a glue suction head driver 12. The glue suction head driver 12 can be a driving structure such as a cylinder, a hydraulic cylinder, a linear motor, a servo motor, etc., or can be a combination of a motor and a transmission assembly, and the transmission assembly can be a belt transmission assembly, a chain transmission assembly, a screw nut transmission assembly, etc.

[0148] For example, the glue sticking mechanism 1 also includes a glue suction head bracket 13, which is provided with a guide rail 14 extending along the third direction y. Each group of glue suction heads 10 is slidably connected to the guide rail 14. The glue suction head driving member 12 can be a cylinder fixed on the glue suction head bracket 13. Two cylinders are provided, and the telescopic ends of each cylinder are respectively connected to the glue suction head 10, for driving each group of glue suction heads 10 to approach or move away from each other along the third direction y.

[0149] In some embodiments, referring to Figures 1-4 , each set of glue suction heads 10 includes two glue suction blocks 11 . The two glue suction blocks 11 are spaced apart along a first direction x and are configured to move closer to or further away from each other along the first direction x. Thus, the spacing in the first direction x between the two glue suction blocks 11 of each set of glue suction heads 10 is adjustable to accommodate different types of workpieces or different locations on the same workpiece.

[0150] For example, referring to Figures 8(a) and 8(b), for different types of batteries, when the electrode assemblies are paired, the spacing between the two stacks in the first direction x may be different. By adjusting the distance in the first direction x between the two glue suction blocks 11 of each group of glue suction heads 10 to match the spacing between the two stacks, glue sticking operations can be performed for different types of batteries, thereby improving versatility.

[0151] For example, each group of glue suction heads 10 may include a fixing block 15, on which a plurality of positioning holes 15a distributed along the first direction x are provided, and at least one of the two glue suction blocks 11 is provided with an adjustment hole 11a extending along the first direction x, and the adjustment hole 11a is fixedly connected to the corresponding positioning hole 15a by a fastener.

[0152] The distance between the two glue sucking blocks 11 is adjusted by adjusting the holes 11a to correspond to the positioning holes 15a at different positions.

[0153] In some embodiments, referring to Figures 1 and 7, the glue laminating device 100 also includes a glue supply mechanism 3, the glue supply mechanism 3 includes at least two glue supply units 30, each glue supply unit 30 is configured to be able to switch between a glue changing station A and a glue supply station B, the glue suction head 10 absorbs the tape cut from the film roll carried by the glue supply unit 30 at the glue supply station B, and the glue changing station A is used to replace the film roll.

[0154] When one or more glue supply units 30 at glue supply station B are supplying adhesive tape to the glue suction head 10, the remaining glue supply units 30 are at glue change station A. The glue supply units 30 at glue change station A can be used to replace the film roll as a backup, for example, replacing an empty film roll with a new one. When the glue supply unit 30 at glue supply station B needs to be replaced, for example, when the film roll is exhausted, one or more glue supply units 30 at glue supply station B are switched to glue change station A. Then, one or more glue supply units 30 at glue change station A that have been replaced with new film rolls are switched to glue supply station B to supply adhesive tape to the glue suction head 10. The one or more glue supply units 30 switched to glue change station A can be used to replace the film roll as a backup. This cycle allows for non-stop film replacement and improves production efficiency.

[0155] In one example, when any one of the at least two glue supply units 30 is located at the glue supply station B, the remaining glue supply units 30 are located at their respective glue changing stations A.

[0156] The number of glue supply units 30 corresponds to the number of glue changing stations A, that is, the glue supply units 30 correspond one to one with the glue changing stations A. Each glue supply unit 30 can switch between the glue supply station B and its own glue changing station A, which facilitates the control of each glue supply unit 30.

[0157] For example, referring to FIG1 , two glue supply units 30 and two glue changing stations A are provided, namely, a first glue supply unit 30a and a first glue changing station A1 corresponding to the first glue supply unit 30a, and a second glue supply unit 30b and a second glue changing station A2 corresponding to the second glue supply unit 30b. When the first glue supply unit 30a is located at glue supply station B, supplying adhesive tape to the glue suction head 10, the second glue supply unit 30b is located at the second glue changing station A2 as a backup. When the film roll in the first glue supply unit 30a needs to be replaced, the first glue supply unit 30a switches from glue supply station B to the first glue changing station A1, and the second glue supply unit 30b, loaded with a new film roll, switches from the second glue changing station A2 to glue supply station B, thereby supplying adhesive tape to the glue suction head 10. The first glue supply unit 30a, which has switched to the first glue changing station A1, can then replace the film roll as a backup.

[0158] In some embodiments, the glue supply mechanism 3 also includes a slide rail 301 and at least two glue supply driving components 302. Each glue supply unit 30 can be slidably arranged on the slide rail 301. Each glue supply driving component 302 is configured to drive the glue supply unit 30 to slide between the glue changing station A and the glue supply station B respectively.

[0159] Each glue supply unit 30 is driven by an independent glue supply driving member 302 , which facilitates the separate control of each glue supply unit 30 and simplifies the structure.

[0160] In one example, each glue supply driving member 302 includes a telescopic cylinder, and the telescopic end of each telescopic cylinder is respectively connected to the glue supply unit 30 .

[0161] The glue supply drive 302 can also be a drive structure such as a hydraulic cylinder, a linear motor, or a combination of a motor and a transmission component. The transmission component can be a belt transmission component, a chain transmission component, a screw nut transmission component, etc.

[0162] In some embodiments, referring to Figures 1 and 7, each glue supply unit 30 includes a glue supply bracket 31, a film installation shaft 32 and a glue feeding mechanism 33. The film installation shaft 32 is respectively arranged on both sides of the glue supply bracket 31 in the third direction y, and the glue feeding mechanism 33 is respectively arranged on both sides of the glue supply bracket 31 in the third direction y.

[0163] Each film roll mounting shaft 32 is used to carry the film roll, and each glue feeding mechanism 33 is used to feed the adhesive tape on the film roll. As a result, each glue feeding unit 30 can feed two adhesive tapes simultaneously, so that the glue suction head 10 can suck up two adhesive tapes at a time, improving glue feeding efficiency and thus improving battery production efficiency.

[0164] In some embodiments, the glue feeding mechanism 33 includes a glue pulling mechanism 331, a glue pressing mechanism 332 and a glue cutting mechanism 333. Along the conveying direction of the tape 200, the glue pressing mechanism 332, the glue cutting mechanism 333 and the glue pulling mechanism 331 are arranged in sequence; the glue pulling mechanism 331 is used to pull the tape 200 to unwind, the glue pressing mechanism 332 is used to press the tape 200 in the second direction z, and the glue cutting mechanism 333 is used to cut the tape 200.

[0165] First, the adhesive tape 200 is pulled along the adhesive tape conveying direction (for example, the first direction x) by the glue pulling mechanism 331 so that the adhesive tape 200 is pulled out to a suitable length. Then, the glue pressing mechanism 332 presses the adhesive tape 200 in the second direction z so that the pulled-out adhesive tape 200 has a certain tension. Then, the glue suction head 10 absorbs the pulled-out adhesive tape 200. Finally, the glue cutting mechanism 333 cuts the pulled-out adhesive tape 200. The glue pulling mechanism 331 releases the pulled-out adhesive tape 200, so that the glue suction head 10 absorbs the pulled-out adhesive tape 200 and cooperates with the shaping component 20 to bend the adhesive tape 200 and then stick it to the workpiece, thereby automatically completing one glue feeding and gluing operation, thereby improving battery production efficiency.

[0166] In some embodiments, the adhesive pulling mechanism 331 includes a clamping cylinder, a clamping jaw disposed on the clamping cylinder, and a rubber pulling cylinder for driving the clamping cylinder to move. The clamping cylinder is used to drive the clamping jaw to clamp and release the adhesive tape 200, and the rubber pulling cylinder is used to drive the clamping cylinder to move so that the adhesive tape 200 is pulled to the appropriate cutting length.

[0167] In some embodiments, the glue pressing mechanism 332 includes a glue pressing cylinder and a pressing block provided at a driving end of the glue pressing cylinder. The glue pressing cylinder is used to drive the pressing block to move along the second direction z to press the adhesive tape 200 .

[0168] In some embodiments, the cutting mechanism 333 includes a cutting cylinder and a cutter disposed at a driving end of the cutting cylinder. The cutting cylinder is used to drive the cutter to move to cut the tape 200 .

[0169] In some embodiments, referring to FIG. 1 , the glue applying mechanism 1 further includes a movable frame 120 , which is connected to the glue suction head 10 and is used to drive the glue suction head 10 to move along the first direction x and the third direction y, respectively.

[0170] The glue suction head 10 can reciprocate between the glue supply station B and the glue application station along a first direction x, and pass through the shaping channel along a second direction z. Specifically, the glue suction head 10 moves along the first direction x to the glue supply station B to absorb the cut adhesive tape 200, then returns to the glue application station. Next, the glue suction head 10 passes through the shaping channel along the second direction z, bends and shapes the absorbed adhesive tape 200, and then adheres it to the workpiece. This allows the glue suction head 10 to automatically complete the glue suction and application operations, improving production efficiency.

[0171] For example, the movable frame 120 includes a first support frame 121, a second support frame 122, a third driving member and a fourth driving member. The first support frame 121 includes a first guide rail along the first direction x, the second support frame 122 includes a second guide rail extending along the second direction z, the second support frame 122 is slidably connected to the first guide rail, the glue suction head 10 is slidably connected to the second guide rail, the driving end of the third driving member is connected to the second support frame 122, the fourth driving member is arranged on the second support frame 122, and the driving end of the fourth driving member is connected to the glue suction head 10, the third driving member is used to drive the second support frame 122 to move along the first guide rail, thereby driving the glue suction head 10 and the fourth driving member to move along the first direction x together, and the fourth driving member is used to drive the glue suction head 10 to move along the second guide rail in the second direction z.

[0172] The glue supply drive 302 can be a drive structure such as a cylinder, a hydraulic cylinder, a linear motor, etc., or it can be a combination of a motor and a transmission component. The transmission component can be a belt transmission component, a chain transmission component, a screw nut transmission component, etc.

[0173] The present disclosure also provides a method for applying adhesive tape to a workpiece, as shown in FIG9 . The method includes:

[0174] S1000: Glue suction step: The glue suction head sucks up the tape;

[0175] S2000: Adhesive tape shaping step: The adhesive suction head passes through the shaping channel formed by the space between the first shaping member and the second shaping member, so that the two ends of the sucked adhesive tape contact the first shaping member and the second shaping member respectively, thereby bending the two ends of the adhesive tape;

[0176] S3000: Glue sticking step: The glue suction head sticks the tape that has passed through the shaping channel to the workpiece.

[0177] In the tape shaping step, one of the two end portions of the tape contacts the first shaping piece and passes through the gap between the glue suction head located in the shaping channel and the first shaping piece, and the other end portion of the tape contacts the second shaping piece and passes through the gap between the glue suction head located in the shaping channel and the second shaping piece.

[0178] In S1000 , the adhesive suction head 10 may generate negative pressure through a negative pressure device to suck the middle portion of the adhesive tape 200 , so that both ends of the adhesive tape 200 extend beyond the two side walls of the adhesive suction head 10 .

[0179] In S2000, at least one of the adhesive tape 10 and the shaping assembly 20 moves toward each other, allowing the adhesive tape 10 to pass through the shaping passage 20a. For example, the shaping assembly 20 may be relatively stationary, and the adhesive tape 10 moves toward the shaping assembly 20, allowing the adhesive tape 10 to pass through the shaping passage 20a. The ends of the adhesive tape 200 contact the first shaping member 21 and the second shaping member 22, respectively, thereby bending the ends of the adhesive tape.

[0180] In S3000 , when the adhesive suction head 10 passes through the shaping channel 20 a , the adhesive tape 200 may be attached to the workpiece while being bent at both ends; or the adhesive tape 200 may be attached to the workpiece after being bent at both ends.

[0181] 8(a) and 8(b), the workpiece takes the electrode assembly 300 of a battery as an example. In the pairing process of the two electrode assemblies, a recessed area is formed between the opposite ends of the two electrode assemblies 300, and the interconnected pole ears 310 of the two electrode assemblies 300 are located in the recessed area. Therefore, the opposite ends of the two electrode assemblies 300 and the connected pole ears 310 together form a roughly U-shaped recessed structure. When pasting the tape 200, if the root of the pole ear is to be completely covered, the tape 200 needs to be shaped into a shape that matches the recessed structure, such as a roughly U-shape.

[0182] The electrode assembly 300 can be located directly below the shaping channel 20a. When the glue suction head 10 passes through the shaping channel 20a, the tape 200 can be bent and adhered to the pole ear. Specifically, while the two ends of the tape 200 are respectively bent in interference contact with the first shaping piece 21 and the second shaping piece 22, the middle part of the two ends is adhered to the interconnected pole ears 310, and the bent parts of the two ends of the tape 200 are respectively adhered to the opposite end faces of the two electrode assemblies 300. When the two ends of the tape 200 are completely separated from the first shaping piece 21 and the second shaping piece 22, the two ends of the tape 200 are also all adhered to the opposite end faces of the electrode assembly 300, thereby fully covering the pole ears.

[0183] Thus, through the mutual cooperation between the glue suction head 10 and the shaping assembly 20, the two ends of the tape 200 are respectively brought into contact with the two shaping members to bend and shape the two ends of the tape 200. After the bending and shaping, the tape 200 can be more adaptively fitted with the recessed structure of the workpiece, the adhesion is more secure, and production efficiency can be improved and labor costs can be reduced. During the battery production process, the position where the two tabs are connected to each other and the roots of each tab are effectively protected, and the tab gluing operation is automatically completed by the gluing device, thereby improving the gluing efficiency, thereby improving the battery production efficiency and reducing labor costs.

[0184] In some embodiments, referring to FIG. 10 , after the tape shaping step and before the adhesive application step, the adhesive application method further includes:

[0185] S4000: Adhesive tape bending and holding step: Adhere the two ends of the bent adhesive tape respectively through the first side wall suction hole of the first side wall and the second side wall suction hole of the second side wall of the adhesive suction head.

[0186] During the process of the glue suction head 10 passing through the shaping channel 20a, the two end portions of the tape 200 are bent toward the first side wall 101 and the second side wall 102 respectively. The two end portions of the tape 200 are adsorbed by the first side wall suction holes 101a and the second side wall suction holes, and the two end portions can be kept in a bent state, thereby reducing or avoiding the risk that the two end portions of the tape 200 may stick to the large surface of the stack and cause the tape to pull the layer tabs 310 and cause possible tearing.

[0187] In some embodiments, referring to FIG. 11 , the adhesive laminating method further includes: an adhesive supplying step, which includes:

[0188] S5100: Switch the glue supply unit of the glue roll to be replaced from the glue supply station to the glue changing station; switch the glue supply unit of the glue roll that has been replaced from the glue changing station to the glue supply station;

[0189] S5200: The glue supply unit at the glue supply station provides adhesive tape to the glue suction head.

[0190] At least two glue supply units 30 can be provided. When one or more glue supply units 30 located at glue supply station B are supplying adhesive tape to the glue suction head 10, the remaining glue supply units 30 are located at glue change station A. The glue supply units 30 at glue change station A can be used to replace the film roll as a backup, for example, replacing an empty film roll with a new one. When the glue supply unit 30 at glue supply station B needs to be replaced with a new film roll, for example, when the film roll is exhausted, one or more glue supply units 30 at glue supply station B are switched to glue change station A. Subsequently, one or more glue supply units 30 at glue change station A carrying the replaced film roll are switched to glue supply station B to supply adhesive tape to the glue suction head 10. The one or more glue supply units 30 switched to glue change station A can then be used to replace the film roll as a backup. This cycle allows for non-stop film replacement, thereby improving production efficiency.

[0191] In some embodiments, referring to FIG. 12 , the step of the glue supply unit at the glue supply station providing the adhesive tape to the glue suction head includes:

[0192] S5210: Unwinding the adhesive tape by pulling the adhesive tape through the adhesive pulling mechanism of the adhesive feeding unit at the adhesive feeding station;

[0193] S5220: Pressing the adhesive tape by the adhesive pressing mechanism of the adhesive supply unit at the adhesive supply station;

[0194] S5230: Cutting the adhesive tape by the adhesive cutting mechanism of the adhesive supply unit at the adhesive supply station.

[0195] The adhesive tape 200 is pulled along the adhesive tape conveying direction (for example, the first direction x) by the adhesive pulling mechanism 331 to stretch the adhesive tape 200 to an appropriate length. Then, the adhesive pressing mechanism 332 presses the adhesive tape 200 in the second direction z. Under the combined action of the pulling force of the adhesive pulling mechanism 331 and the pressure of the adhesive pressing mechanism 332, the stretched adhesive tape 200 has a certain tension. Then, the adhesive suction head 10 absorbs the stretched adhesive tape 200. Finally, the adhesive cutting mechanism 333 cuts the stretched adhesive tape 200. The adhesive pulling mechanism 331 releases the adhesive tape 200. The adhesive suction head 10 absorbs the exposed adhesive tape 200 and cooperates with the shaping component 20 to bend the adhesive tape 200 and then stick it to the workpiece, thereby completing a adhesive laminating operation.

[0196] The embodiment of the present disclosure further provides a battery production line, including: a providing device for providing workpieces; such as the gluing device 100 mentioned above.

[0197] Through the mutual cooperation between the glue suction head 10 and the shaping component 20, the two ends of the tape 200 are respectively contacted with the two shaping parts to bend and shape the two ends of the tape 200. The bent and shaped tape 200 can fit more adaptably with the concave structure of the workpiece, and the adhesion is more secure, which can improve production efficiency and reduce labor costs.

[0198] In some embodiments, the workpiece includes at least two electrode assemblies, the tabs of two adjacent electrode assemblies are connected to each other, and the tabs are located in a recessed space between the two adjacent electrode assemblies; the glue suction head is configured such that the tape passing through the shaping channel is adhered to the tabs and covers the tabs.

[0199] During the battery production and manufacturing process, the connection points between the two pole tabs and the roots of each pole tab are effectively protected, and the pole tab gluing operation is automatically completed through the gluing device, which improves the gluing efficiency, thereby improving battery production efficiency and reducing labor costs.

[0200] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure, and they should all be included in the scope of the specification of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the technical content.

Claims

1. A gluing device for sticking an adhesive tape to a workpiece, the gluing device comprising: The adhesive tape applying mechanism includes an adhesive suction head for sucking the adhesive tape; A shaping mechanism includes a shaping assembly, wherein the shaping assembly includes a first shaping member and a second shaping member spaced apart from each other, wherein the space between the first shaping member and the second shaping member constitutes a shaping channel; Wherein, the glue suction head is constructed as follows: it can pass through the shaping channel and make one of the two end portions of the adhesive tape contact with the first shaping piece and pass through the gap between the glue suction head and the first shaping piece located in the shaping channel, and the other end portion of the two end portions of the adhesive tape contact with the second shaping piece and pass through the gap between the glue suction head and the second shaping piece located in the shaping channel, so that the two end portions of the adhesive tape are bent, and the adhesive tape passing through the shaping channel is adhered to the workpiece.

2. The adhesive laminating device according to claim 1, wherein: The glue suction head includes a first side wall and a second side wall located on opposite sides of a first direction; The glue suction head is configured as follows: the glue suction head passes through the shaping channel along a second direction, and the two end portions of the adhesive tape are bent by the misalignment action between the first side wall and the first shaping member along the second direction, and the misalignment action between the second side wall and the second shaping member along the second direction, wherein the second direction is perpendicular to the first direction.

3. The adhesive laminating device according to claim 2, wherein: The adhesive suction head includes a bottom wall, which is connected to the first side wall and the second side wall. The bottom wall is provided with a bottom wall suction hole, the first side wall is provided with a first side wall suction hole, and the second side wall is provided with a second side wall suction hole. The first side wall suction hole and the second side wall suction hole are respectively used to absorb the two end portions of the adhesive tape, and the bottom wall suction hole is used to absorb the portion of the adhesive tape between the two end portions.

4. The adhesive laminating device according to claim 3, wherein: The first side wall suction hole, the second side wall suction hole and the bottom wall suction hole are respectively connected to the negative pressure device via gas channels.

5. The glue applying device according to any one of claims 2 to 4, wherein: The first shaping member includes a first roller that can rotate freely around an axis, and the second shaping member includes a second roller that can rotate freely around an axis. The first roller and the second roller are parallel to each other and located at the same position in the second direction.

6. The glue applying device according to any one of claims 2 to 5, wherein: The first shaping member includes a first shaping plate, and the second shaping member includes a second shaping plate.

7. The glue applying device according to any one of claims 2 to 6, wherein: At least one of the first shaping member and the second shaping member is configured to be able to float along the first direction.

8. The adhesive laminating device according to claim 7, wherein: The shaping assembly includes a shaping bracket, a first shaping mounting frame and a second shaping mounting frame, wherein the first shaping member is arranged on the first shaping mounting frame, and the second shaping member is arranged on the second shaping mounting frame. A first elastic member is connected between the shaping bracket and the first shaping mounting frame, and the first elastic member can be stretched and retracted along the first direction so that the first shaping member floats along the first direction; And / or, a second elastic member is connected between the shaping bracket and the second shaping mounting frame, and the second elastic member can be stretched and retracted along the first direction to make the second shaping member float along the first direction.

9. The adhesive laminating device according to claim 8, wherein: The shaping bracket is provided with a first guide member, the first guide member extends along the first direction, and the first shaping mounting frame is slidably provided on the first guide member; and / or, The shaping bracket is provided with a second guide member, the second guide member extends along the first direction, and the second shaping mounting frame is slidably provided on the second guide member.

10. The adhesive application device according to claim 8 or 9, wherein: The shaping mechanism also includes a shaping frame and a shaping drive member arranged on the shaping frame, the driving end of the shaping drive member is connected to the shaping bracket, and the shaping drive member can drive the shaping component to approach or move away from the workpiece along the second direction.

11. The glue applying device according to any one of claims 2 to 10, wherein: At least two groups of the glue suction heads are provided, and two adjacent groups of the glue suction heads are spaced apart along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction.

12. The adhesive laminating device according to claim 11, wherein: Two adjacent groups of the glue suction heads are configured to be able to approach or move away from each other along the third direction.

13. The adhesive laminating device according to claim 12, wherein: The glue sticking mechanism further comprises: The glue suction head driving component is used to drive at least one group of glue suction heads to move along the third direction.

14. The glue applying device according to any one of claims 11 to 13, wherein: Each group of the glue suction heads includes two glue suction blocks, which are spaced apart along the first direction and are configured to be able to approach or move away from each other along the first direction.

15. The glue applying device according to any one of claims 2 to 14, wherein: The glue sticking device further comprises: The glue supply mechanism includes at least two glue supply units, each of which is configured to be switchable between a glue changing station and a glue supply station. The glue suction head absorbs the tape cut from the film roll carried by the glue supply unit at the glue supply station, and the glue changing station is used to replace the film roll.

16. The adhesive application device according to claim 15, wherein: When any one of the at least two glue supply units is located at the glue supply station, the remaining glue supply units are located at their respective glue changing stations.

17. The adhesive laminating device according to claim 16, wherein: The glue supply mechanism also includes a slide rail and at least two glue supply driving parts. Each of the glue supply units can be slidably arranged on the slide rail, and each of the glue supply driving parts is configured to drive the glue supply unit to slide between the glue changing station and the glue supply station.

18. The glue applying device according to any one of claims 15 to 17, wherein: Each of the glue supply units includes a glue supply bracket, a film installation shaft and a glue feeding mechanism. The film installation shaft is respectively arranged on both sides of the glue supply bracket in the third direction, and the glue feeding mechanism is respectively arranged on both sides of the glue supply bracket in the third direction.

19. The adhesive laminating device according to claim 18, wherein: The glue feeding mechanism includes a glue pulling mechanism, a glue pressing mechanism and a glue cutting mechanism. Along the conveying direction of the tape, the glue pressing mechanism, the glue cutting mechanism and the glue pulling mechanism are arranged in sequence; the glue pulling mechanism is used to pull the tape to unwind, the glue pressing mechanism is used to press the tape in the second direction, and the glue cutting mechanism is used to cut the tape.

20. The glue applying device according to any one of claims 2 to 19, wherein: The glue sticking mechanism further includes a movable frame connected to the glue sucking head and configured to drive the glue sucking head to move along the first direction and the second direction respectively.

21. A method for applying adhesive tape to a workpiece, the method comprising: Glue suction step: a glue suction head sucks up the adhesive tape; The adhesive tape shaping step comprises: the adhesive suction head passes through a shaping channel formed by the space between the first shaping member and the second shaping member, so that the two ends of the sucked adhesive tape contact the first shaping member and the second shaping member respectively, thereby bending the two ends of the adhesive tape; Glue sticking step: the glue suction head sticks the tape passing through the shaping channel to the workpiece, Wherein, in the tape shaping step, one of the two end portions of the tape contacts the first shaping piece and passes through the gap between the glue suction head and the first shaping piece located in the shaping channel, and the other end portion of the tape contacts the second shaping piece and passes through the gap between the glue suction head and the second shaping piece located in the shaping channel.

22. The adhesive laminating method according to claim 21, wherein: After the tape shaping step and before the glue applying step, the glue applying method further includes: The adhesive tape is bent and maintained in a step of respectively sucking the two ends of the bent adhesive tape through the first side wall suction hole of the first side wall and the second side wall suction hole of the second side wall of the adhesive suction head.

23. The adhesive laminating method according to claim 21 or 22, wherein: The glue application method further includes: a glue supplying step, wherein the glue supplying step includes: Switching the glue supply unit of the film to be replaced at the glue supply station from the glue supply station to the glue changing station; Switching the glue supply unit of the glue changing station where the glue roll has been replaced from the glue changing station to the glue supply station; The glue supply unit located at the glue supply station provides the adhesive tape to the glue suction head.

24. The adhesive laminating method according to claim 23, wherein: The glue supply unit at the glue supply station provides the adhesive tape to the glue suction head, including: Unwinding the adhesive tape by pulling the adhesive pulling mechanism of the adhesive supply unit located at the adhesive supply station; Pressing the adhesive tape by the adhesive pressing mechanism of the adhesive supply unit located at the adhesive supply station; The adhesive tape is cut by the adhesive cutting mechanism of the adhesive supply unit located at the adhesive supply station.

25. A battery production line comprising: a providing device for providing a workpiece; The glue applying device according to any one of claims 1 to 20.

26. The battery production line according to claim 25, wherein: The workpiece includes at least two electrode assemblies, the tabs of two adjacent electrode assemblies are connected to each other, and the tabs are located in a recessed space between the two adjacent electrode assemblies; The adhesive suction head is constructed as follows: the adhesive tape passing through the shaping channel is adhered to the tab and covers the tab.

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