Gluing device and battery production equipment

Abstract

The utility model relates to a rubberizing device and battery production equipment, and the rubberizing device comprises a piece of gummed paper which comprises a first release layer, a bonding layer and a second release layer which are stacked in sequence; the clamping assembly is connected with one of the first release layer and the second release layer, is clamped at two opposite ends of the gummed paper and is used for stretching the gummed paper along a second direction parallel to the gummed paper; and the rubberizing piece is movably arranged along the first direction and is provided with a rubberizing position for pressing the gummed paper on the surface of the electrode assembly and a separating position for separating from the gummed paper. The first release layer and the second release layer can reduce the probability that the surface of the bonding layer is polluted, the clamping assembly can stretch the gummed paper, the gummed paper can be attached to the surface of the electrode assembly more tightly and more smoothly, and the probability of residual air between the gummed paper and the electrode assembly is reduced; in addition, the gluing piece can further improve the gluing tightness and stability of the gummed paper on the surface of the electrode assembly, so that the gummed paper can be more firmly and flatly attached to the surface of the electrode assembly.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of batteries, in particular to a rubber pasting device and a battery production equipment. BACKGROUND

[0002] For the electrode assembly of a solid-state battery monomer, rubber needs to be pasted on the surface of the electrode assembly to reduce the probability of external particulate matter or foreign matter entering the electrode assembly structure and to protect the electrode assembly.

[0003] In the current rubber pasting operation, air is easily left between the rubber and the electrode assembly, which causes air to agglomerate and form bubbles after pressing, affecting the overall structure of the electrode assembly. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a rubber pasting device and a battery production equipment in view of the problem that air is easily left between the rubber and the electrode assembly, which causes air to agglomerate and form bubbles after pressing, affecting the overall structure of the electrode assembly.

[0005] In a first aspect, the application provides a rubber pasting device for pasting rubber on an electrode assembly of a solid-state battery monomer, the rubber pasting device comprising a rubber, a clamping assembly and a rubber pasting element, the rubber comprising a first release layer, an adhesive layer and a second release layer which are sequentially stacked in a first direction; the clamping assembly is clamped at opposite ends of the rubber and connected to one of the first release layer and the second release layer; the clamping assembly can be controlled to stretch the rubber along a second direction parallel to the rubber; the rubber pasting element is movably arranged along the first direction and has a rubber pasting position for pressing the rubber against the surface of the electrode assembly and a separation position for separating from the rubber.

[0006] Through the above structure, the first release layer and the second release layer can first protect the adhesive layer and reduce the probability of the surface of the adhesive layer being contaminated. In addition, the first release layer and the second release layer can provide a clamping space connected to the clamping assembly, so that the clamping assembly can stably clamp the rubber and stretch the rubber, so that the rubber can be more tightly and evenly pasted to the surface of the electrode assembly, reducing the probability of air being left between the rubber and the electrode assembly. Further, in combination with the pressing action of the rubber pasting element, the tightness and stability of the rubber on the surface of the electrode assembly can be further improved, so that the rubber is more firmly and evenly attached to the surface of the electrode assembly.

[0007] In some embodiments, the first release layer comprises a pasting area overlapping the adhesive layer and an extension area extending beyond the adhesive layer, the extension area being located on opposite sides of the pasting area along the second direction and having a connecting portion for being connected to the clamping assembly.

[0008] Through the above structure, the adhesive paper can be stably connected with the clamping assembly through the extension area of the first release layer. The adhesive paper can be stretched by the clamping assembly, so that the adhesive paper can be more flatly attached to the surface of the electrode assembly, and the adhesive paper and the electrode assembly can be more tightly attached.

[0009] In some embodiments, the clamping assembly includes a first clamping piece and a second clamping piece clamped to the extension areas on opposite sides in the second direction. At least one of the first clamping piece and the second clamping piece is movably arranged in the second direction, so that the two can be close to or away from each other.

[0010] By arranging the first clamping piece and the second clamping piece, the adhesive paper can be stably clamped and stretched in the second direction, so that the adhesive paper can be more flatly attached to the surface of the electrode assembly, and the adhesive paper and the electrode assembly can be more tightly attached.

[0011] In some embodiments, the connecting part is configured as a first connecting hole. At least one of the first clamping piece and the second clamping piece includes a first clamping plate and a second clamping plate clamped to the corresponding extension area on both sides in the first direction. The first clamping plate and the second clamping plate are both provided with a second connecting hole matched with the first connecting hole. The clamping assembly further includes a positioning pin, which is sequentially arranged in the first connecting hole and the second connecting hole.

[0012] In this way, the first clamping plate and the second clamping plate realize clamping of the extension area, and the positioning pin realizes fixed connection between the extension area and the first clamping plate and the second clamping plate, so that the first clamping plate and the second clamping plate can stretch the adhesive paper in the second direction while clamping the extension area, improving the flatness of the adhesive paper.

[0013] In some embodiments, the adhesive piece is an elastic adhesive piece.

[0014] Through the above structure, when the adhesive piece presses the adhesive paper against the surface of the electrode assembly, the adhesive piece can be more tightly pressed against the adhesive paper, and can better squeeze out the residual air between the adhesive paper and the electrode assembly, so that the adhesive paper and the electrode assembly can be more tightly attached.

[0015] In some embodiments, the adhesive piece has a pressing surface arranged towards the clamping assembly and corresponding to the bonding layer. In the pressing position, the pressing surface presses the bonding layer against the surface of the electrode assembly in the first direction. In the separation position, the pressing surface is separated from the adhesive paper.

[0016] In this way, when the adhesive piece is in the pressing position, the pressing surface can match the bonding layer and better press the bonding layer against the large surface of the electrode assembly.

[0017] In some embodiments, 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 both ends.

[0018] Through the above structure, the pressing surface can better discharge air between the adhesive tape and the surface of the electrode assembly during the gluing process, so that the adhesive tape and the electrode assembly are more closely attached.

[0019] In some embodiments, the ratio between the height of the highest protrusion on the pressing surface and the width of the pressing surface in the second direction is 1 / 50-1 / 5.

[0020] Therefore, by setting the ratio between the height of the highest 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 discharge air between the adhesive tape and the surface of the electrode assembly, so that the adhesive tape and the electrode assembly are more closely attached.

[0021] In some embodiments, the gluing device further comprises a support for supporting the electrode assembly, and the support is arranged on the side of the clamping assembly away from the gluing member along the first direction.

[0022] By arranging the support, the electrode assembly can be supported and positioned, so that the gluing member can press the adhesive tape onto the electrode assembly to achieve gluing of the electrode assembly.

[0023] In a second aspect, the application also provides a battery production device comprising the gluing device as described above.

[0024] The above gluing device and battery production device can first cover the two side surfaces of the adhesive layer with the first release layer and the second release layer, so as to reduce the probability of contamination of the surface of the adhesive layer. In addition, the first release layer and the second release layer can provide a clamping space connected with the clamping assembly, so that the clamping assembly can stably clamp the adhesive tape and stretch the adhesive tape, so that the adhesive tape can be more closely and evenly attached to the surface of the electrode assembly, and the probability of residual air between the adhesive tape and the electrode assembly is reduced. Further, in combination with the pressing effect of the gluing member, the close attachment of the adhesive tape to the surface of the electrode assembly can be further improved, so that the adhesive tape is more firmly and evenly attached to the surface of the electrode assembly. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a structural schematic diagram of a gluing device according to one or more embodiments.

[0026] Figure 2 FIG. 2 is a structural schematic diagram of an adhesive tape in a gluing device according to one or more embodiments.

[0027] Figure 3 FIG. 3 is a structural schematic diagram of an adhesive tape attached to an electrode assembly according to one or more embodiments.

[0028] The reference signs are as follows: 100, adhesive attaching device; 200, electrode assembly; 10, adhesive paper; 20, clamping assembly; 30, adhesive attaching piece; 40, supporting piece; 11, first release layer; 12, adhesive layer; 13, second release layer; 14, attaching area; 15, extending area; 16, connecting part; 21, first clamping piece; 22, second clamping piece; 23, first clamping plate; 24, second clamping plate; 25, positioning pin; a, first direction; b, second direction. DETAILED DESCRIPTION

[0029] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application.

[0030] In the description of the present application, it should be understood that, if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0032] In the present application, unless specifically defined otherwise, if there is a description of a first feature "on" or "under" a second feature, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0033] In the present application, unless specifically defined otherwise, if there is a description of a first feature "on" or "under" a second feature, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be a mediating element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a mediating element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0035] At present, from the development of market situation, the application of battery is more and more extensive. The battery is not only applied to the energy storage power system of hydropower, thermal power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles and other fields. With the continuous expansion of the application field of battery, the market demand is also increasing.

[0036] The traditional battery monomer usually includes a shell and an electrode assembly arranged inside the shell. The shell is wrapped outside the electrode assembly, and an electrolyte is filled in the shell, so that the electrode assembly can be fully soaked in the electrolyte.

[0037] Compared with the traditional battery monomer, the electrolyte in the solid-state battery monomer is replaced by a solid-state electrolyte layer, and the electrolyte layer is sandwiched between the positive and negative electrode sheets. The solid-state battery monomer has higher safety and higher energy density, and therefore is more and more widely used.

[0038] For a solid-state battery cell, a positive electrode sheet, an electrolyte layer, and a negative electrode sheet are sequentially stacked to form an electrode assembly. That is, the electrolyte layer and the positive and negative electrode sheets are in surface contact in a solid-solid manner. The contact interface between the electrolyte layer and the positive and negative electrode sheets directly affects the use performance and cycle stability of the electrode assembly. Therefore, it is usually necessary to attach a rubber paper to the surface of the electrode assembly to protect the electrode assembly, which can reduce the probability of external particulate matter or foreign matter entering the electrode assembly structure, making the structure of the electrode assembly more stable.

[0039] However, at present, when the electrode assembly is attached with rubber paper, air is easily left between the electrode assembly and the rubber paper. During the subsequent isostatic pressing operation, the air between the electrode assembly and the rubber paper will gather to form bubbles, affecting the overall structure of the electrode assembly.

[0040] Based on the above considerations, in order to solve the problem that air is easily left between the rubber paper and the electrode assembly, causing air to gather to form bubbles after pressing, affecting the overall structure of the electrode assembly, the present application provides a rubber attaching device. First, the two side surfaces of the bonding layer are covered with a first release layer and a second release layer, which can reduce the probability of the bonding layer surface being contaminated. In addition, the first release layer and the second release layer can provide a clamping space connected to the clamping assembly, so that the clamping assembly can stably clamp the rubber paper and stretch the rubber paper, so that the rubber paper can be more tightly and evenly attached to the surface of the electrode assembly, reducing the probability of air being left between the rubber paper and the electrode assembly. Further, in combination with the pressing action of the rubber attaching part, the attachment tightness and stability of the rubber paper on the surface of the electrode assembly can be further improved, so that the rubber paper is more firmly and evenly attached to the surface of the electrode assembly.

[0041] Referring to Figure 1 and Figure 2 An embodiment of the present application provides a rubber attaching device 100 for attaching rubber paper to an electrode assembly 200 of a solid-state battery cell. The rubber attaching device 100 includes rubber paper 10, a clamping assembly 20, and a rubber attaching part 30. The rubber paper 10 includes a first release layer 11, a bonding layer 12, and a second release layer 13 sequentially stacked along a first direction a. The clamping assembly 20 is clamped at opposite ends of the rubber paper 10 and connected to one of the first release layer 11 and the second release layer 13. The clamping assembly 20 can be controlled to stretch the rubber paper 10 along a second direction b parallel to the rubber paper 10. The rubber attaching part 30 is movably arranged along the first direction a and has a rubber attaching position for pressing the rubber paper 10 against the surface of the electrode assembly 200 and a separation position for separating the rubber paper 10.

[0042] It should be noted that the solid-state battery cell refers to a battery cell with a solid-state electrolyte, i.e., the electrolyte is provided as a solid-state electrolyte layer, and is sandwiched between the positive electrode sheet and the negative electrode sheet, and the electrolyte layer is in solid-state contact with the positive and negative electrode sheets. That is, the electrode assembly 200 of the solid-state battery cell includes a positive electrode sheet, an electrolyte layer, and a negative electrode sheet stacked.

[0043] When the electrode assembly 200 is taped, it can be taped on the large surface of the electrode assembly 200. Among them, the large surface of the electrode assembly 200 refers to the two surfaces with the largest area in the electrode assembly 200, usually refers to the surface of the positive electrode sheet or the negative electrode sheet stacked on the outermost layer.

[0044] Specifically, the adhesive paper 10 includes a first release layer 11, an adhesive layer 12, and a second release layer 13. Among them, the adhesive layer 12 refers to a structure with adhesion, which can adhere to the surface of the electrode assembly 200. It should be noted that the adhesive layer 12 has two opposite surfaces, one of which can have adhesion, and the other of which can not have adhesion. That is, one side surface of the adhesive layer 12 is the adhesive surface, and the other side surface can be provided as a base film, and the base film does not have adhesion.

[0045] When the adhesive layer 12 is attached to the electrode assembly 200, the side surface of the adhesive layer 12 with adhesion is attached to the surface of the electrode assembly 200, and the other side surface can play a protective role.

[0046] Further, the first release layer 11 and the second release layer 13 cover the side surface of the adhesive layer 12 with adhesion and the side surface of the adhesive layer 12 without adhesion, respectively. Before taping, first tear one of the first release layer 11 and the second release layer 13 to expose the side surface of the adhesive layer 12 with adhesion. Then, the torn release layer is connected to the clamping assembly 20, so as to fix and stretch the adhesive paper 10 by the clamping assembly 20. At this time, the side surface of the adhesive layer 12 with adhesion is arranged towards the large surface of the electrode assembly 200, and the adhesive layer 12 is attached to the large surface of the electrode assembly 200, and then the release layer on the other side of the adhesive layer 12 is torn off, so as to complete the taping on one of the large surfaces of the electrode assembly 200. By repeating the above process, the other large surface of the electrode assembly 200 can be taped, so as to complete the overall taping operation of the electrode assembly 200.

[0047] It can be understood that the materials of the first release layer 11 and the second release layer 13 can be, but are not limited to, polypropylene, polyethylene, polytetrafluoroethylene, polyimide, polyether ether ketone, polyvinyl chloride, polyethylene terephthalate, etc.

[0048] The first release layer 11, the bonding layer 12 and the second release layer 13 are sequentially stacked along the first direction a, that is, the first direction a is the thickness direction of the adhesive paper 10, that is, the stacking direction of the adhesive paper 10.

[0049] The clamping assembly 20 refers to a structure capable of clamping and fixing the adhesive paper 10 and stretching the adhesive paper 10. After the clamping assembly 20 is connected with the first release layer 11 or the second release layer 13, it can be clamped at opposite ends of the adhesive paper 10 along the second direction b, and then stretch the adhesive paper 10 along the second direction b, so that the adhesive paper 10 can be as flat as possible. In this way, when the adhesive paper 10 is attached to the large surface of the electrode assembly 200, the probability of air remaining between the adhesive paper 10 and the surface of the electrode assembly 200 can be effectively reduced, and the adhesive paper 10 and the electrode assembly 200 can be more closely attached.

[0050] The adhesive attaching piece 30 refers to a structure capable of pressing the adhesive paper 10 to the surface of the electrode assembly 200, so that the adhesive paper 10 can be closely attached to the electrode assembly 200. The adhesive attaching piece 30 is movably arranged along the first direction a, and has an adhesive attaching position and a separation position during movement.

[0051] During the adhesive attaching process, the clamping assembly 20 can be arranged above the electrode assembly 200, and the adhesive attaching piece 30 can be arranged above the clamping assembly 20. At this time, the first direction a is the vertical direction. The adhesive attaching piece 30 moves towards the clamping assembly 20 along the first direction a until it contacts the adhesive paper 10 clamped by the clamping assembly 20, and then synchronously moves the adhesive paper 10 downward until the adhesive paper 10 is attached to the surface of the electrode assembly 200. At this time, the adhesive attaching piece 30 applies pressure downward so that the adhesive paper 10 can be stably attached to the surface of the electrode assembly 200. At this time, the adhesive attaching piece 30 is located at the adhesive attaching position.

[0052] After the adhesive attaching is completed, the adhesive attaching piece 30 moves upward until the adhesive attaching piece 30 is separated from the adhesive paper 10 on the clamping assembly 20, at which time the adhesive attaching piece 30 is located at the separation position. Then the release layer on the other side of the bonding layer 12 is removed, and the adhesive attaching of the large surface of the electrode assembly 200 is completed.

[0053] Through the above structure, the first release layer 11 and the second release layer 13 can first protect the adhesive layer 12, reducing the probability of the surface of the adhesive layer 12 being contaminated. In addition, the first release layer 11 and the second release layer 13 can provide a clamping space connected with the clamping assembly 20, so that the clamping assembly 20 can stably clamp the adhesive tape 10 and stretch the adhesive tape 10, enabling the adhesive tape 10 to be more tightly and evenly attached to the surface of the electrode assembly 200, reducing the probability of air remaining between the adhesive tape 10 and the electrode assembly 200. Further, in combination with the pressing effect of the adhesive member 30, the attachment tightness and stability of the adhesive tape 10 on the surface of the electrode assembly 200 can be further improved, enabling the adhesive tape 10 to be more firmly and evenly attached to the surface of the electrode assembly 200.

[0054] As shown in Figure 2 some embodiments, the first release layer 11 includes an attachment area 14 overlapping the adhesive layer 12 and an extension area 15 extending beyond the adhesive layer 12, the extension area 15 being located on opposite sides of the attachment area 14 along the second direction b and having a connecting portion 16 for connecting with the clamping assembly 20.

[0055] Specifically, the attachment area 14 overlaps the adhesive layer 12, and the extension area 15 is located on opposite sides of the attachment area 14 along the second direction b, clamping the clamping assembly 20 on the two extension areas 15 to achieve the connection between the clamping assembly 20 and the adhesive tape 10. On this basis, the clamping assembly 20 can stretch the adhesive tape 10 along the second direction b, making the adhesive tape 10 more even.

[0056] Further, the second release layer 13 overlaps the adhesive layer 12 and is attached to the side surface of the adhesive layer 12 having adhesion. Before the adhesive is attached, the second release layer 13 is first removed to expose the side surface of the adhesive layer 12 having adhesion.

[0057] Then, the clamping assembly 20 is clamped on the two extension areas 15 of the first release layer 11 and connected with the connecting portion 16 of the extension area 15. Under the pressure of the adhesive member 30, the side surface of the adhesive layer 12 having adhesion can be attached to the surface of the electrode assembly 200.

[0058] Through the above structure, the adhesive tape 10 can be stably connected with the clamping assembly 20 through the extension area 15 of the first release layer 11, and the adhesive tape 10 can be stretched by the clamping assembly 20, enabling the adhesive tape 10 to be more evenly attached to the surface of the electrode assembly 200, making the attachment between the adhesive tape 10 and the electrode assembly 200 more tight.

[0059] In some embodiments, the clamping assembly 20 comprises a first clamping member 21 and a second clamping member 22 clamping the extension region 15 on opposite sides in the second direction b, at least one of the first clamping member 21 and the second clamping member 22 being movably arranged in the second direction b so as to enable the first clamping member 21 and the second clamping member 22 to move closer to or farther away from each other.

[0060] Specifically, the first clamping member 21 and the second clamping member 22 are clamped on the extension region 15 on opposite sides of the first release layer 11 respectively, and are connected to the connecting portion 16 on the corresponding extension region 15. At least one of the first clamping member 21 and the second clamping member 22 is movably arranged in the second direction b, so that the first clamping member 21 and the second clamping member 22 can move closer to or farther away from each other in the second direction b.

[0061] When the first clamping member 21 and the second clamping member 22 move farther away from each other, the adhesive tape 10 clamped therebetween can be stretched, so that the adhesive tape 10 can be more flatly attached to the surface of the electrode assembly 200.

[0062] By arranging the first clamping member 21 and the second clamping member 22, the adhesive tape 10 can be stably clamped and stretched in the second direction b, so that the adhesive tape 10 can be more flatly attached to the surface of the electrode assembly 200, and the adhesive tape 10 can be more closely attached to the electrode assembly 200.

[0063] In some embodiments, the connecting portion 16 is configured as a first connecting hole, and at least one of the first clamping member 21 and the second clamping member 22 comprises a first clamping plate 23 and a second clamping plate 24 clamped on both sides of the corresponding extension region 15 in the first direction a, and the first clamping plate 23 and the second clamping plate 24 are both provided with a second connecting hole (not shown in the figure) matched with the first connecting hole. The clamping assembly 20 further comprises a positioning pin 25, which is sequentially arranged in the first connecting hole and the second connecting hole.

[0064] Specifically, the connecting portion 16 is configured as a first connecting hole arranged on the extension region 15. The first clamping member 21 and the second clamping member 22 both comprise a first clamping plate 23 and a second clamping plate 24, and the first clamping plate 23 and the second clamping plate 24 are arranged in a stack in the first direction a, clamping the extension region 15 between the first clamping plate 23 and the second clamping plate 24.

[0065] Further, the first clamping plate 23 and the second clamping plate 24 are both provided with a second connecting hole, and the second connecting hole is arranged in one-to-one correspondence with the first connecting hole on the extension region 15.

[0066] The clamping assembly 20 further comprises 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 holes on the extension area 15 are arranged one by one corresponding to the second connecting holes on the first clamping plate 23 and the second clamping plate 24. The positioning pins 25 are sequentially inserted into the first connecting holes and the second connecting holes in the first direction a, so as to realize the fixed connection between the extension area 15 and the first clamping plate 23 and the second clamping plate 24.

[0067] Therefore, on the basis of the clamping of the extension area 15 by the first clamping plate 23 and the second clamping plate 24, the positioning pins 25 can realize the fixed connection between the extension area 15 and the first clamping plate 23 and the second clamping plate 24, so that the first clamping piece 21 and the second clamping piece 22 can stretch the adhesive tape 10 in the second direction b while the first clamping plate 23 and the second clamping plate 24 clamp the extension area 15, thereby improving the flatness of the adhesive tape 10.

[0068] In some embodiments, the adhesive piece 30 is an elastic adhesive piece 30. Specifically, the adhesive piece 30 can be but is not limited to a silicone adhesive piece 30, a rubber adhesive piece 30 or other materials with elasticity.

[0069] Through the above structure, when the adhesive piece 30 presses the adhesive tape 10 against the surface of the electrode assembly 200, the adhesive piece 30 can be pressed more closely with the adhesive tape 10, which can better squeeze out the residual air between the adhesive tape 10 and the electrode assembly 200, so that the adhesive tape 10 and the electrode assembly 200 are more closely attached.

[0070] In some embodiments, the adhesive piece 30 has a pressing surface (not shown in the figure) facing the clamping assembly 20 and corresponding to the bonding layer 12, when in the adhesive position, the pressing surface presses the bonding layer 12 against the surface of the electrode assembly 200 in the first direction a. When in the separation position, the pressing surface is separated from the adhesive tape 10.

[0071] Specifically, the adhesive piece 30 is arranged above the clamping assembly 20, the lower surface of the adhesive piece 30 is configured as the pressing surface, and the position and area of the pressing surface are matched with the bonding layer 12.

[0072] In this way, when the adhesive piece 30 is in the pressing position, the pressing surface can match the bonding layer 12 and better press the bonding layer 12 against the large surface of the electrode assembly 200.

[0073] In some embodiments, the pressing surface is an arc surface curved and protruding towards the clamping assembly 20, and in the second direction b, the protruding height of the pressing surface gradually decreases from the middle to both ends.

[0074] Specifically, the pressing surface is arranged as an arc surface protruding towards the clamping assembly 20, and in the second direction b, the protruding height of the pressing surface gradually decreases from the middle to the two ends. That is, the pressing surface is an arc surface protruding from the middle.

[0075] When the pressing surface presses the adhesive tape 10 onto the surface of the electrode assembly 200, first, the highest point of the pressing surface protruding from the middle is in contact with the adhesive tape 10, and the adhesive tape 10 corresponding to this position is attached to the surface of the electrode assembly 200. Then, as the pressing surface continues to move downward, the adhesive tape 10 is fully attached to the surface of the electrode assembly 200 from the middle to the two ends.

[0076] Through the above structure, the pressing surface can better exhaust the air between the adhesive tape 10 and the surface of the electrode assembly 200 during the adhesive attaching process, so that the adhesive tape 10 and the electrode assembly 200 are more closely attached.

[0077] In some embodiments, 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 is 1 / 50-1 / 5.

[0078] Specifically, 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 will both affect the final bending angle and shape of the arc surface, thereby affecting the air exhaust effect between the adhesive tape 10 and the surface of the electrode assembly 200 during the adhesive attaching process.

[0079] 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 exhaust the air between the adhesive tape 10 and the surface of the electrode assembly 200, so that the adhesive tape 10 and the electrode assembly 200 are more closely attached.

[0080] In some embodiments, the adhesive attaching device 100 further comprises a support 40 for supporting the electrode assembly 200, and the support 40 is arranged on the side of the clamping assembly 20 away from the adhesive attaching member 30 along the first direction a.

[0081] Specifically, the support 40 can be but is not limited to a support seat, and the upper surface of the support seat is a support surface. Placing the electrode assembly 200 on the support surface can support and position the electrode assembly 200.

[0082] The clamping assembly 20 is arranged above the support 40 along the first direction a, and then the adhesive attaching member 30 is arranged above the clamping assembly 20 along the first direction a. In this way, when the electrode assembly 200 is placed on the support 40, the adhesive attaching member 30 moves downward, and the adhesive tape 10 on the clamping assembly 20 can be attached to the surface of the electrode assembly 200.

[0083] Through the support 40, the electrode assembly 200 can provide support and positioning, so that the adhesive member 30 can press the adhesive paper 10 against the electrode assembly 200, and the adhesive of the electrode assembly 200 is realized.

[0084] Based on the same concept as the above adhesive device 100, the application also provides a battery production equipment, which comprises the adhesive device 100 as described above.

[0085] According to one or more embodiments, the application can use a suction cup to vacuum adsorb the adhesive paper 10, first tear off the second release layer 13 on the adhesive paper 10. Then the first release layer 11 is clamped between 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, so that the connection and fixation between the adhesive paper 10 and the first clamping member 21 and the second clamping member 22 are realized.

[0086] The first clamping member 21 and the second clamping member 22 are away from each other along the second direction b, and the adhesive paper 10 between them is stretched, so that the adhesive paper 10 is more flat.

[0087] The adhesive member 30 moves downward to contact the adhesive paper 10 with the pressing surface, at this time the adhesive paper 10 is profiled with the pressing surface. The adhesive member 30 continues to move downward to the adhesive position, at this time the pressing surface presses the adhesive paper 10 against the large surface of the electrode assembly 200, and in the pressing process, the pressing surface can exhaust between the adhesive paper 10 and the electrode assembly 200, so that the adhesive between the adhesive paper 10 and the electrode assembly 200 is more closely.

[0088] After the adhesive is completed, the adhesive member 30 moves upward and separates from the adhesive paper 10. At this time, the first release layer 11 on the other side of the adhesive layer 12 is torn off, and the adhesive of one side of the electrode assembly 200 is realized.

[0089] The above process can be repeated to perform the adhesive operation on the other side of the electrode assembly 200.

[0090] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0091] The above embodiments only express several embodiments of the application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the application, a number of variations and improvements can be made, which belong to the protection scope of the application. Therefore, the protection scope of the patent of the application should be subject to the appended claims.

Claims

1. A taping device, characterized by A device for taping an electrode assembly of a solid-state battery cell, the device comprising: a tape including 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 disposed 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 includes a fitting area overlapping the adhesive layer and an extension area beyond the adhesive layer, the extension area being located on opposite sides of the fitting 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 includes 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 disposed along the second direction to allow the two to approach or move away from each other.

4. The 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 includes a first clamping plate and a second clamping plate clamped on both sides of the corresponding extension area along the first direction, and the first clamping plate and the second clamping plate each have a second connection hole matched with the first connection hole; The clamping assembly further includes a positioning pin sequentially passing through the first connection hole and the second connection hole.

5. The taping device of claim 1, wherein, The taping member is an elastic taping member.

6. The taping device of claim 5, wherein, The taping member has a pressing surface disposed 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 in the taping position, and the pressing surface is separated from the tape 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 both ends.

8. The taping device of claim 7, wherein, 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 is 1 / 50-1 / 5.

9. The taping device of claim 1, wherein, The device further includes a support for supporting the electrode assembly, the support being disposed on a side of the clamping assembly away from the taping member along the first direction.

10. A battery production apparatus characterized by comprising: The device includes the taping device according to any one of claims 1-9.

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