Adhesive application apparatus and battery production device

Abstract

The present application relates to an adhesive application apparatus and a battery production device. The adhesive application apparatus comprises: adhesive tape, comprising a first release layer, an adhesive layer, and a second release layer which are sequentially stacked; a clamping assembly, which is connected to one of the first release layer and the second release layer, is clamped at two opposite ends of the adhesive tape, and stretches the adhesive tape in a second direction parallel to the adhesive tape; and an adhesive application member, which is movably arranged in a first direction and has an adhesive application position at which the adhesive tape is pressed against the surface of an electrode assembly and a separation position at which separation from the adhesive tape occurs. In the present application, the first release layer and the second release layer can reduce the probability of contamination on the surface of the adhesive layer, and the clamping assembly can also stretch the adhesive tape, so that the adhesive tape can be more tightly and smoothly attached to the surface of the electrode assembly, thereby reducing the probability of residual air between the adhesive tape and the electrode assembly. In addition, the adhesive application member can further increase the tightness and stability of the adhesive tape attaching to the surface of the electrode assembly, so that the adhesive tape can be more firmly and smoothly attached to the surface of the electrode assembly.

Description

Adhesive application equipment and battery production equipment Related applications

[0001] This application claims priority to Chinese patent application No. 2024230448995, filed on December 10, 2024, entitled "Adhesive Application Device and Battery Production Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, and in particular to an adhesive application device and battery production equipment. Background Technology

[0003] For the electrode assembly of a solid-state battery cell, adhesive needs to be applied to the surface of the electrode assembly to reduce the probability of external particles or foreign objects entering the electrode assembly structure and to protect the electrode assembly.

[0004] In the current adhesive application process, air can easily remain between the adhesive tape and the electrode assembly. This causes the air to clump together and form bubbles after pressing, affecting the overall structure of the electrode assembly. Summary of the Invention

[0005] Based on this, this application provides an adhesive application device and a battery production equipment.

[0006] In a first aspect, this application provides an adhesive application apparatus for applying adhesive to the electrode assembly of a solid-state battery cell. The adhesive application apparatus includes adhesive tape, a clamping assembly, and an adhesive application component. The adhesive tape includes a first release layer, an adhesive layer, and a second release layer sequentially stacked along a first direction. The clamping assembly clamps the adhesive tape at opposite ends and is connected to one of the first and second release layers. The clamping assembly is controllably capable of stretching the adhesive tape along a second direction parallel to the adhesive tape. The adhesive application component is movably disposed along the first direction and has an application position for pressing the adhesive tape against the surface of the electrode assembly and a separation position for separating from the adhesive tape.

[0007] Through the above structure, the first and second release layers can first protect the adhesive layer, reducing the probability of contamination on the adhesive layer surface. Furthermore, the first and second release layers can provide a clamping space connected to the clamping assembly, allowing the clamping assembly to stably clamp the adhesive tape and stretch it, enabling the adhesive tape to adhere more tightly and smoothly to the surface of the electrode assembly, reducing the probability of residual air between the adhesive tape and the electrode assembly. Moreover, combined with the pressing action of the adhesive applicator, the adhesion tightness and stability of the adhesive tape on the electrode assembly surface can be further improved, making the adhesive tape adhere more firmly and smoothly to the surface of the electrode assembly.

[0008] In some embodiments, the first release layer includes an adhesion region overlapping the adhesive layer and an extension region extending beyond the adhesive layer, the extension region being located on opposite sides of the adhesion region along a second direction and having a connection portion for connection with a clamping assembly.

[0009] The above structure allows the adhesive tape to be stably connected to the clamping assembly through the extension area of ​​the first release layer. The clamping assembly stretches the adhesive tape, allowing it to adhere more smoothly to the surface of the electrode assembly, resulting in a tighter bond between the adhesive tape and the electrode assembly.

[0010] In some embodiments, the clamping assembly includes a first clamping member and a second clamping member clamping extended regions on opposite sides along a second direction, at least one of the first clamping member and the second clamping member being movably disposed along the second direction so that the two can move closer to each other or further apart.

[0011] By setting the first clamping member and the second clamping member, the adhesive paper can be stably clamped and stretched along the second direction, so that the adhesive paper can be more smoothly attached to the surface of the electrode assembly, and the adhesive paper and the electrode assembly can be more tightly bonded.

[0012] In some embodiments, the connecting portion is configured as a first connecting hole, and at least one of the first clamping member and the second clamping member includes a first clamping plate and a second clamping plate clamped on both sides of the corresponding extension area along a first direction, and the first clamping plate and the second clamping plate are each provided with a second connecting hole that mates with the first connecting hole; the clamping assembly also includes a positioning pin, which is sequentially inserted through the first connecting hole and the second connecting hole.

[0013] Thus, while the first and second clamping plates clamp the extension area, the positioning pin can achieve a fixed connection between the extension area and the first and second clamping plates, so that while the first and second clamping plates clamp the extension area, the first clamping member and the second clamping member can stretch the adhesive paper in the second direction to improve the flatness of the adhesive paper.

[0014] In some embodiments, the adhesive part is a flexible adhesive part.

[0015] With the above structure, when the adhesive component presses the adhesive paper against the surface of the electrode assembly, the adhesive component can press more tightly against the adhesive paper, which can better squeeze out the residual air between the adhesive paper and the electrode assembly, making the adhesive paper and the electrode assembly adhere more tightly.

[0016] In some embodiments, the adhesive applicator has a pressing surface facing the clamping assembly and corresponding to the adhesive layer. In the adhesive application position, the pressing surface presses the adhesive layer against the surface of the electrode assembly along a first direction; in the separation position, the pressing surface separates from the adhesive paper.

[0017] In this way, when the adhesive part is in the pressing position, the pressing surface can match the adhesive layer and press the adhesive layer better against the large surface of the electrode assembly.

[0018] In some embodiments, the abutting surface is an arcuate surface that bends and protrudes toward the clamping assembly, and in a second direction, the protrusion height of the abutting surface gradually decreases from the middle to both ends.

[0019] With the above structure, the pressure surface can better expel the air between the adhesive paper and the electrode assembly surface during the adhesive application process, making the adhesive paper and the electrode assembly adhere more tightly.

[0020] In some embodiments, the ratio between the height of the highest point protruding on the pressing surface and the width of the pressing surface in the second direction is 1 / 50 to 1 / 5.

[0021] Therefore, by setting the ratio between the height of the highest point of the protrusion on the pressing surface and the width of the pressing surface in the second direction within the above range, the pressing surface can better achieve air venting between the adhesive paper and the electrode assembly surface, making the adhesive paper and the electrode assembly adhere more tightly.

[0022] In some embodiments, the adhesive applicator further includes a support member for supporting the electrode assembly, the support member being disposed along a first direction on the side of the clamping assembly opposite to the adhesive applicator.

[0023] By setting up support components, the electrode assembly can be supported and positioned, allowing the adhesive application component to press the adhesive paper onto the electrode assembly, thus achieving the application of adhesive to the electrode assembly.

[0024] Secondly, this application also provides a battery production apparatus, including the adhesive applicator as described above.

[0025] The aforementioned adhesive applicator and battery production equipment firstly cover both sides of the adhesive layer with a first release layer and a second release layer, which can reduce the probability of contamination of the adhesive layer surface. In addition, the first release layer and the second release layer can provide a clamping space connected to the clamping component, so that the clamping component can stably clamp the adhesive paper and stretch the adhesive paper, so that the adhesive paper can be more tightly and flatly attached to the surface of the electrode component, reducing the probability of residual air between the adhesive paper and the electrode component. Furthermore, combined with the pressing action of the adhesive applicator, the adhesion tightness and stability of the adhesive paper on the surface of the electrode component can be further improved, so that the adhesive paper is more firmly and flatly attached to the surface of the electrode component. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0027] Figure 1 is a schematic diagram of the adhesive applicator according to one or more embodiments.

[0028] Figure 2 is a schematic diagram of the adhesive tape structure in an adhesive applicator according to one or more embodiments.

[0029] Figure 3 is a schematic diagram of the structure of adhesive tape attached to an electrode assembly according to one or more embodiments.

[0030] Explanation of reference numerals in the attached drawings: 100, adhesive applicator; 200, electrode assembly; 10, adhesive tape; 20, clamping assembly; 30, adhesive applicator; 40, support member; 11, first release layer; 12, adhesive layer; 13, second release layer; 14, bonding area; 15, extension area; 16, connecting part; 21, first clamping member; 22, second clamping member; 23, first clamping plate; 24, second clamping plate; 25, positioning pin; a, first direction; b, second direction. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0037] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in other fields. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0038] Traditional battery cells typically include a casing and an electrode assembly disposed inside the casing. The casing surrounds the electrode assembly and is filled with electrolyte so that the electrode assembly can be fully immersed in the electrolyte.

[0039] Compared to traditional battery cells, solid-state battery cells replace the electrolyte with a solid electrolyte layer sandwiched between the positive and negative electrode plates. Solid-state battery cells offer higher safety and higher energy density, and are therefore being used more and more widely.

[0040] For a solid-state battery cell, the positive electrode, electrolyte layer, and negative electrode are stacked sequentially to form an electrode assembly. That is, the electrolyte layer and the positive and negative electrodes are in solid-solid surface contact. The contact interface between the electrolyte layer and the positive and negative electrodes directly affects the performance and cycle stability of the electrode assembly. Therefore, adhesive tape is usually attached to the surface of the electrode assembly to protect it, reducing the probability of external particles or foreign objects entering the electrode assembly structure and making the structure more stable.

[0041] However, currently, when applying adhesive to electrode components, air tends to remain between the electrode components and the adhesive tape. During subsequent isostatic pressing operations, the air between the electrode components and the adhesive tape will clump together to form bubbles, affecting the overall structure of the electrode components.

[0042] Based on the above considerations, to address the problem of air residue easily remaining between the adhesive tape and the electrode assembly, leading to air agglomeration and bubble formation after pressing, thus affecting the overall structure of the electrode assembly, this application provides an adhesive application device. Firstly, both sides of the adhesive layer are covered with a first release layer and a second release layer, reducing the probability of contamination on the adhesive layer surface. Furthermore, the first and second release layers provide a clamping space connected to a clamping component, allowing the clamping component to stably clamp the adhesive tape and stretch it, enabling the adhesive tape to adhere more tightly and smoothly to the surface of the electrode assembly, further reducing the probability of air residue between the adhesive tape and the electrode assembly. Moreover, combined with the pressing action of the adhesive application component, the adhesion tightness and stability of the adhesive tape on the electrode assembly surface can be further improved, resulting in a more secure and smoother adhesion of the adhesive tape to the electrode assembly surface.

[0043] Referring to Figures 1 and 2, an embodiment of this application provides an adhesive application device 100 for applying adhesive to the electrode assembly 200 of a solid-state battery cell. The adhesive application device 100 includes adhesive tape 10, a clamping assembly 20, and an adhesive application component 30. The adhesive tape 10 includes a first release layer 11, an adhesive layer 12, and a second release layer 13 sequentially stacked along a first direction a. The clamping assembly 20 clamps the adhesive tape 10 at opposite ends and is connected to one of the first release layer 11 and the second release layer 13. The clamping assembly 20 is controllably capable of stretching the adhesive tape 10 along a second direction b parallel to the adhesive tape 10. The adhesive application component 30 is movably disposed along the first direction a and has an application position for pressing the adhesive tape 10 against the surface of the electrode assembly 200 and a separation position for separating from the adhesive tape 10.

[0044] It should be noted that a solid-state battery cell refers to a battery cell with a solid electrolyte, that is, the electrolyte is a solid electrolyte layer sandwiched between the positive and negative electrode plates, and the contact interfaces between the electrolyte layer and the positive and negative electrode plates are all solid. In other words, the electrode assembly 200 of a solid-state battery cell includes a positive electrode plate, an electrolyte layer, and a negative electrode plate stacked together.

[0045] When applying adhesive to the electrode assembly 200, it can be applied to the large surface of the electrode assembly 200. The large surface of the electrode assembly 200 refers to the two surfaces with the largest area in the electrode assembly 200, which are usually the surfaces of the outermost positive or negative electrode sheets stacked on top of each other.

[0046] Specifically, the adhesive tape 10 includes a first release layer 11, an adhesive layer 12, and a second release layer 13. The adhesive layer 12 is a structure with adhesive properties, capable of adhering to the surface of the electrode assembly 200. It should be noted that the adhesive layer 12 has two opposing surfaces, one of which may be adhesive while the other is non-adhesive. That is, one surface of the adhesive layer 12 is the adhesive surface, and the other surface can be a base film, which is non-adhesive.

[0047] When the adhesive layer 12 is attached to the electrode assembly 200, the adhesive side of the adhesive layer 12 is attached to the surface of the electrode assembly 200, while the other side can provide protection.

[0048] Further, the first release layer 11 and the second release layer 13 respectively cover the adhesive side and the non-adhesive side of the adhesive layer 12. Before applying the adhesive, one of the first release layer 11 and the second release layer 13 is first peeled off to expose the adhesive side of the adhesive layer 12. Then, the peeled-off release layer is connected to the clamping assembly 20 so that the adhesive tape 10 can be fixed and stretched by the clamping assembly 20. At this time, the adhesive side of the adhesive layer 12 faces the large surface of the electrode assembly 200. The adhesive layer 12 is applied to the large surface of the electrode assembly 200, and then the release layer on the other side of the adhesive layer 12 is peeled off to complete the adhesive application on one large surface of the electrode assembly 200. Repeating the above process, the other large surface of the electrode assembly 200 can be adhesively applied to complete the overall adhesive application operation of the electrode assembly 200.

[0049] Understandably, the materials of the first release layer 11 and the second release layer 13 may be, but are not limited to, polypropylene, polyethylene, polytetrafluoroethylene, polyimide, polyetheretherketone, polyvinyl chloride, polyethylene terephthalate, etc.

[0050] The first release layer 11, the adhesive layer 12, and the second release layer 13 are stacked sequentially along the first direction a, that is, the first direction a is the thickness direction of the adhesive paper 10, which is also the stacking direction of the adhesive paper 10.

[0051] The clamping assembly 20 is a structure capable of clamping and fixing the adhesive tape 10 and stretching it. After being connected to the first release layer 11 or the second release layer 13, the clamping assembly 20 can clamp the adhesive tape 10 at opposite ends along the second direction b, and then stretch the adhesive tape 10 along the second direction b, so that the adhesive tape 10 can remain as flat as possible. In this way, when the adhesive tape 10 is attached to the large surface of the electrode assembly 200, the probability of residual air between the adhesive tape 10 and the surface of the electrode assembly 200 can be effectively reduced, making the adhesion between the adhesive tape 10 and the electrode assembly 200 tighter.

[0052] The adhesive applicator 30 refers to a structure capable of pressing the adhesive tape 10 onto the surface of the electrode assembly 200, so that the adhesive tape 10 can be tightly adhered to the electrode assembly 200. The adhesive applicator 30 is movably disposed along a first direction a, and during the movement, the adhesive applicator 30 has an adhesive application position and a separation position.

[0053] During the adhesive application process, the clamping assembly 20 can be positioned above the electrode assembly 200, and the adhesive applicator 30 can be positioned above the clamping assembly 20. In this case, the first direction a is the vertical direction. The adhesive applicator 30 moves along the first direction a towards the clamping assembly 20 until it contacts the adhesive paper 10 held by the clamping assembly 20, and then moves the adhesive paper 10 downwards synchronously until it adheres to the surface of the electrode assembly 200. At this point, the adhesive applicator 30 applies downward pressure to ensure that the adhesive paper 10 is stably adhered to the surface of the electrode assembly 200. At this time, the adhesive applicator 30 is in the adhesive application position.

[0054] After the adhesive is applied, the adhesive applicator 30 moves upward until it separates from the adhesive tape 10 on the clamping assembly 20. At this point, the adhesive applicator 30 is in the separated position. Then, the release layer on the other side of the adhesive layer 12 is peeled off, thus completing the adhesive application on one large surface of the electrode assembly 200.

[0055] Through the above structure, the first release layer 11 and the second release layer 13 can firstly protect the adhesive layer 12, reducing the probability of contamination on the surface of the adhesive layer 12. Furthermore, the first release layer 11 and the second release layer 13 can provide a clamping space connected to the clamping assembly 20, allowing the clamping assembly 20 to stably clamp the adhesive tape 10 and stretch it, enabling the adhesive tape 10 to adhere more tightly and smoothly to the surface of the electrode assembly 200, reducing the probability of residual air between the adhesive tape 10 and the electrode assembly 200. Furthermore, combined with the pressing action of the adhesive applicator 30, the adhesion tightness and stability of the adhesive tape 10 on the surface of the electrode assembly 200 can be further improved, making the adhesive tape 10 adhere more firmly and smoothly to the surface of the electrode assembly 200.

[0056] As shown in FIG2, in some embodiments, the first release layer 11 includes a bonding area 14 overlapping the adhesive layer 12 and an extension area 15 extending beyond the adhesive layer 12. The extension area 15 is located on opposite sides of the bonding area 14 along the second direction b and has a connecting portion 16 for connecting to the clamping assembly 20.

[0057] Specifically, the bonding area 14 overlaps with the adhesive layer 12, and the extension areas 15 are located on opposite sides of the bonding area 14 along the second direction b. The clamping component 20 is clamped in the extension areas 15 on both sides, thereby connecting the clamping component 20 with the adhesive tape 10. Based on this, the clamping component 20 can stretch the adhesive tape 10 along the second direction b, making the adhesive tape 10 flatter.

[0058] Furthermore, the second release layer 13 overlaps with the adhesive layer 12, and the second release layer 13 is attached to the adhesive side of the adhesive layer 12. Before applying the adhesive, the second release layer 13 is first removed, exposing the adhesive side of the adhesive layer 12.

[0059] Then, the clamping assembly 20 clamps the two side extension regions 15 of the first release layer 11 and connects to the connecting portion 16 of the extension regions 15. Under the pressure of the adhesive applicator 30, the adhesive side surface of the adhesive layer 12 can be adhered to the surface of the electrode assembly 200.

[0060] With the above structure, the adhesive tape 10 can be stably connected to the clamping assembly 20 through the extension area 15 of the first release layer 11. The clamping assembly 20 stretches the adhesive tape 10, so that the adhesive tape 10 can be more smoothly attached to the surface of the electrode assembly 200, and the adhesive tape 10 and the electrode assembly 200 are more tightly bonded.

[0061] In some embodiments, the clamping assembly 20 includes a first clamping member 21 and a second clamping member 22 clamping an extension region 15 on opposite sides along a second direction b, wherein at least one of the first clamping member 21 and the second clamping member 22 is movably disposed along the second direction b so that the two can move closer to each other or further away from each other.

[0062] Specifically, the first clamping member 21 and the second clamping member 22 are respectively clamped on the extension areas 15 on opposite sides of the first release layer 11 and connected to the connecting portions 16 on the corresponding extension areas 15. At least one of the first clamping member 21 and the second clamping member 22 is movably disposed along the second direction b, thereby allowing the first clamping member 21 and the second clamping member 22 to move closer to or further away from each other along the second direction b.

[0063] When the first clamping member 21 and the second clamping member 22 move away from each other, the adhesive tape 10 held between them can be stretched, so that the adhesive tape 10 can be more smoothly attached to the surface of the electrode assembly 200.

[0064] By setting the first clamping member 21 and the second clamping member 22, the adhesive tape 10 can be stably clamped and stretched along the second direction b, so that the adhesive tape 10 can be more smoothly attached to the surface of the electrode assembly 200, and the adhesive tape 10 and the electrode assembly 200 can be more tightly bonded.

[0065] In some embodiments, the connecting portion 16 is configured as a first connecting hole. At least one of the first clamping member 21 and the second clamping member 22 includes a first clamping plate 23 and a second clamping plate 24 clamped along a first direction a on both sides of the corresponding extension area 15. Both the first clamping plate 23 and the second clamping plate 24 have a second connecting hole (not shown in the figure) that mates with the first connecting hole. The clamping assembly 20 also includes a positioning pin 25, which passes through the first connecting hole and the second connecting hole in sequence.

[0066] Specifically, the connecting portion 16 is configured as a first connecting hole opened in the extension region 15. The first clamping member 21 and the second clamping member 22 both include a first clamping plate 23 and a second clamping plate 24, which are stacked along the first direction a to clamp the extension region 15 between the first clamping plate 23 and the second clamping plate 24.

[0067] Furthermore, the first clamping plate 23 and the second clamping plate 24 are both provided with second connecting holes, and the second connecting holes are provided in a one-to-one correspondence with the first connecting holes on the extension area 15.

[0068] The clamping assembly 20 also includes positioning pins 25. When the extension area 15 is clamped between the first clamping plate 23 and the second clamping plate 24, the first connecting hole on the extension area 15 corresponds one-to-one with the second connecting hole on the first clamping plate 23 and the second clamping plate 24. By sequentially inserting the positioning pins 25 into the first connecting hole and the second connecting hole along the first direction a, a fixed connection between the extension area 15 and the first clamping plate 23 and the second clamping plate 24 can be achieved.

[0069] Thus, based on the clamping of the extension area 15 by the first clamping plate 23 and the second clamping plate 24, the positioning pin 25 can achieve a fixed connection between the extension area 15 and the first clamping plate 23 and the second clamping plate 24, so that while the first clamping plate 23 and the second clamping plate 24 clamp the extension area 15, the first clamping member 21 and the second clamping member 22 can stretch the adhesive paper 10 along the second direction b, thereby improving the flatness of the adhesive paper 10.

[0070] In some embodiments, the adhesive element 30 is an elastic adhesive element 30. Specifically, the adhesive element 30 may be, but is not limited to, a silicone adhesive element 30, a rubber adhesive element 30, or other elastic materials.

[0071] With the above structure, when the adhesive applicator 30 presses the adhesive tape 10 against the surface of the electrode assembly 200, the adhesive applicator 30 can press the adhesive tape 10 more tightly, which can better squeeze out the residual air between the adhesive tape 10 and the electrode assembly 200, making the adhesive tape 10 and the electrode assembly 200 adhere more tightly.

[0072] In some embodiments, the adhesive applicator 30 has a pressing surface (not shown) facing the clamping assembly 20 and corresponding to the adhesive layer 12. In the adhesive application position, the pressing surface presses the adhesive layer 12 against the surface of the electrode assembly 200 along a first direction a. In the separation position, the pressing surface separates from the adhesive tape 10.

[0073] Specifically, the adhesive applicator 30 is disposed above the clamping assembly 20, and the lower surface of the adhesive applicator 30 is configured as a pressing surface, and the position and area of ​​the pressing surface are matched with the adhesive layer 12.

[0074] In this way, when the adhesive part 30 is in the pressing position, the pressing surface can match the adhesive layer 12 and press the adhesive layer 12 better against the large surface of the electrode assembly 200.

[0075] In some embodiments, the pressing surface is an arcuate surface that curves and protrudes toward the clamping assembly 20, and in the second direction b, the protrusion height of the pressing surface gradually decreases from the middle to both ends.

[0076] Specifically, the pressing surface is configured as an arc surface that curves and protrudes towards the clamping assembly 20, and in the second direction b, the protrusion height of the pressing surface gradually decreases from the middle to both ends. That is to say, the pressing surface is an arc surface that protrudes from the middle.

[0077] When the pressing surface presses the adhesive tape 10 against the surface of the electrode assembly 200, the highest point of the protrusion in the middle of the pressing surface first contacts the adhesive tape 10, and the adhesive tape 10 corresponding to that position is adhered to the surface of the electrode assembly 200. Then, as the pressing surface continues to move downward, the adhesive tape 10 is completely adhered to the surface of the electrode assembly 200 from the middle to both ends.

[0078] With the above structure, the pressing surface can better expel the air between the adhesive paper 10 and the surface of the electrode assembly 200 during the adhesive application process, making the adhesive paper 10 and the electrode assembly 200 adhere more tightly.

[0079] In some embodiments, the ratio between the height of the highest point protruding on the pressing surface and the width of the pressing surface in the second direction b is 1 / 50 to 1 / 5.

[0080] Specifically, the height of the highest point of the protrusion in the middle of the pressing surface and the width of the pressing surface in the second direction b will affect the final bending angle and shape of the arc surface, thereby affecting the air venting effect between the adhesive paper 10 and the surface of the electrode assembly 200 during the adhesive application process.

[0081] Therefore, by setting the ratio between the height of the highest point of the protrusion on the pressing surface and the width of the pressing surface in the second direction b within the above range, the pressing surface can better achieve air venting between the adhesive tape 10 and the surface of the electrode assembly 200, and make the adhesive tape 10 and the electrode assembly 200 fit more tightly.

[0082] In some embodiments, the adhesive applicator 100 further includes a support member 40 for supporting the electrode assembly 200, the support member 40 being disposed along a first direction a on the side of the clamping assembly 20 away from the adhesive applicator 30.

[0083] Specifically, the support member 40 may be configured as a support base, and the upper surface of the support base is a support surface. Placing the electrode assembly 200 on the support surface can support and position the electrode assembly 200.

[0084] The clamping assembly 20 is positioned above the support member 40 along the first direction a, and then the adhesive applicator 30 is positioned above the clamping assembly 20 along the first direction a. In this way, when the electrode assembly 200 is placed on the support member 40, the adhesive applicator 30 moves downward, thereby attaching the adhesive tape 10 on the clamping assembly 20 to the surface of the electrode assembly 200.

[0085] By providing support and positioning for the electrode assembly 200, the adhesive applicator 30 can press the adhesive paper 10 onto the electrode assembly 200, thereby achieving adhesive application to the electrode assembly 200.

[0086] Based on the same concept as the adhesive applicator 100 described above, this application also provides a battery production apparatus, including the adhesive applicator 100 as described above.

[0087] According to one or more embodiments, in specific use, a suction cup can be used to vacuum-adsorb the adhesive tape 10. First, the second release layer 13 on the adhesive tape 10 is peeled off. Then, the extension area 15 of the first release layer 11 is clamped onto the first clamping member 21 and the second clamping member 22, and the positioning pin 25 is inserted into the first connecting hole and the second connecting hole, thereby realizing the connection and fixation between the adhesive tape 10 and the first clamping member 21 and the second clamping member 22.

[0088] The first clamping member 21 and the second clamping member 22 move away from each other along the second direction b, stretching the adhesive paper 10 between them to make the adhesive paper 10 flatter.

[0089] The adhesive applicator 30 moves downward until the pressing surface contacts the adhesive tape 10, at which point the adhesive tape 10 conforms to the pressing surface. The adhesive applicator 30 continues to move downward to the application position, where the pressing surface presses the adhesive tape 10 against the large surface of the electrode assembly 200. During the pressing process, the pressing surface can release air between the adhesive tape 10 and the electrode assembly 200, making the adhesion between the adhesive tape 10 and the electrode assembly 200 tighter.

[0090] After the adhesive is applied, the adhesive part 30 moves upward and separates from the adhesive tape 10. At this time, the first release layer 11 on the other side of the adhesive layer 12 is peeled off, thus achieving adhesive application on a large surface of one side of the electrode assembly 200.

[0091] By repeating the above process, adhesive can be applied to the other side of the electrode assembly 200.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A taping device for taping an electrode assembly of a solid-state battery cell, the taping device comprising: a tape comprising a first release layer, an adhesive layer, and a second release layer sequentially stacked along a first direction; a clamping assembly clamped to opposite ends of the tape and connected to one of the first release layer and the second release layer, the clamping assembly being controllable to stretch the tape along a second direction parallel to the tape; and a taping member movably arranged along the first direction and having a taping position for pressing the tape against a surface of the electrode assembly and a separation position for separating from the tape.

2. The taping device of claim 1, wherein, The first release layer comprises a fit area overlapping the adhesive layer and an extension area beyond the adhesive layer, the extension area being located on opposite sides of the fit area along the second direction and having a connection portion for connection with the clamping assembly.

3. The taping device of claim 2, wherein, The clamping assembly comprises a first clamping member and a second clamping member clamped to the extension areas on opposite sides along the second direction, at least one of the first clamping member and the second clamping member being movably arranged along the second direction so as to be capable of moving towards or away from each other.

4. The taping device of claim 3, wherein, The connection portion is configured as a first connection hole, at least one of the first clamping member and the second clamping member comprises a first clamping plate and a second clamping plate clamped to the extension areas on opposite sides along the first direction, the first clamping plate and the second clamping plate each having a second connection hole matched with the first connection hole; The clamping assembly further comprises a positioning pin sequentially arranged through the first connection hole and the second connection hole.

5. The taping device of any one of claims 1-4, wherein, The taping member is an elastic taping member.

6. The taping device of claim 5, wherein, The taping member has a pressing surface arranged towards the clamping assembly and corresponding to the adhesive layer, the pressing surface pressing the adhesive layer against the surface of the electrode assembly along the first direction when in the taping position, and the pressing surface being separated from the tape when in the separation position.

7. The taping device of claim 6, wherein, The pressing surface is an arc surface curved and protruding towards the clamping assembly, and in the second direction, the protruding height of the pressing surface gradually decreases from the middle to the ends.

8. The taping device of claim 7, wherein, The ratio between the height of the highest protruding point on the pressing surface and the width of the pressing surface in the second direction is 1 / 50 to 1 / 5.

9. The taping device of any of claims 1-8, wherein, The taping device further comprises a support member for supporting the electrode assembly, the support member being arranged on a side of the clamping assembly away from the taping member along the first direction. 10.A battery production apparatus comprising the taping device according to any one of claims 1 to 9.

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