Battery buffer production equipment and production method

Abstract

The present application discloses a production device and a production method for a battery buffer. The production equipment includes an unwinding assembly, a first die-cutting device, a first attaching mechanism, and a second die-cutting device. The unwinding assembly is used to unwind the first release paper, the first material tape, and the second material tape. The first die-cutting device is used to die-cut the first material tape into a first buffer strip, and transfer the first buffer strip to the first release paper, and the length direction of the first buffer strip is perpendicular to the tape running direction of the first release paper. The first attaching mechanism is used to attach the second material tape to the first release paper, and make the second material tape located on at least one side of the first buffer strip along its own length direction. The second die-cutting device is used to cut the second material tape into a second buffer strip along the width direction of the first release paper. The present application realizes asynchronous docking and bonding of the first material tape and the second material tape through standardized design, which can reduce the waste of raw materials of the first material tape and the second material tape, which is conducive to reducing costs and improving production efficiency.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a production device and a production method for a battery buffer. Background Art

[0002] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0003] A battery device usually includes multiple battery cells to meet the voltage requirements of electrical equipment. A buffer is usually provided between two adjacent battery cells to facilitate heat dissipation and buffer the expansion and deformation of the battery cells. In the development of battery technology, how to reduce the production cost of buffers and improve the production efficiency of buffers has always been a research direction in the industry. Summary of the invention

[0004] The embodiments of the present application provide a production device and a production method for a battery buffer, which are beneficial to reducing the production cost of the battery buffer and improving the production efficiency thereof.

[0005] According to the first aspect of the present application, the present application provides a production device for a battery buffer, the production device comprising an unwinding assembly, a first die-cutting device, a first attaching mechanism and a second die-cutting device. The unwinding assembly is used to unwind the first release paper, the first material strip and the second material strip. The first die-cutting device is used to die-cut the first material strip into a first buffer strip, and transfer the first buffer strip to the first release paper, wherein the length direction of the first buffer strip is perpendicular to the tape running direction of the first release paper. The first attaching mechanism is used to attach the second material strip to the first release paper, and make the second material strip located on at least one side of the first buffer strip along its own length direction. The second die-cutting device is used to cut the second material strip into a second buffer strip along the width direction of the first release paper. The embodiment of the present application forms a frame-shaped buffer structure by die-cutting the first material strip into a strip-shaped first buffer strip and asynchronously transferring it to the first release paper, then attaching the second material strip to both sides of the first buffer strip along its own length direction, and then die-cutting the second material strip. This technical solution realizes the asynchronous docking and bonding of the first material strip and the second material strip through standardized design. On the one hand, it can reduce the amount of cutting waste of the first material strip and the second material strip, reduce the waste of raw materials, and help reduce costs. On the other hand, it is also beneficial to improve the production efficiency of battery buffer components.

[0006] In some embodiments, the unwinding assembly is also used to unwind the first support film and the second support film; the first die-cutting device includes a first die-cutting mechanism, a first transfer mechanism, a second die-cutting mechanism, and a second transfer mechanism. The first die-cutting mechanism is used to fit the first support film and the first material strip, and asynchronously die-cut the first material strip into a strip-shaped first material strip along the width direction of the first material strip, the width direction of the first material strip is perpendicular to the running direction of the first material strip, and the width direction of the first material strip is parallel to the running direction of the first material strip; the first transfer mechanism is used to asynchronously transfer the first material strip to the second support film; the second die-cutting mechanism is used to die-cut the first material strip along the running direction of the second support film to form a first buffer strip; the second transfer mechanism is used to transfer the first buffer strip to the first release paper. The first die-cutting device forms the first buffer strip by two die-cutting operations, which is conducive to improving the position accuracy of the first buffer strip on the first release paper, reducing the adverse effects of the position deviation of the first buffer strip on the attachment of the second material strip, reducing the risk of the first buffer strip overlapping with the second material strip or the distance between them being too large, and is conducive to improving the production rate of the battery buffer.

[0007] In some embodiments, the production equipment further comprises a first recycling mechanism and a second recycling mechanism, wherein the first recycling mechanism and the second recycling mechanism are used to recycle the first support film and the second support film respectively, thereby facilitating the reuse of the support film material and improving the material utilization rate.

[0008] In some embodiments, the second die-cutting device is also used to cut the first buffer strip into a third buffer strip along the width direction of the first release paper. The first buffer strip is cut into two third buffer strips, and the two third buffer strips can respectively form one of the side strips of the two battery buffers, which is beneficial to reduce the number of die-cutting and transfer times of the first die-cutting device, simplify the production process, and improve production efficiency. The second die-cutting device can simultaneously cut the second material strip and the first buffer strip in one cutting operation, which is beneficial to simplify the process and improve production efficiency. In addition, the edges of the second buffer strip and the third buffer strip formed by cutting along the running direction of the first release paper can be set flush, which is convenient for determining the product outer edge of the entire battery buffer and improving the production rate of the battery buffer.

[0009] In some embodiments, the unwinding assembly is also used to unwind the second release paper and the first single-sided tape; the production equipment also includes a third die-cutting device and a second attaching mechanism; the third die-cutting device is used to attach the second release paper to cover the first buffer strip and the second buffer strip, and die-cut the second release paper and the first release paper to form a sheet-shaped first semi-finished product; the second attaching mechanism is used to adhere the first single-sided tape to the second release paper layer of the first semi-finished product, and the second release paper layer is formed after the second release paper is die-cut; the production equipment also includes a third recycling mechanism, and the third recycling mechanism is used to peel off and recycle the first single-sided tape and the second release paper layer from the first semi-finished product to form a second semi-finished product. The second release paper can cover the adhesive layer on the surface of the first buffer strip and the second buffer strip, reduce the amount of adhesive bonded to the third die-cutting device, and is conducive to extending the service life of the third die-cutting device.

[0010] In some embodiments, the third die-cutting device is further used to die-cut a first tear-off mark on the first release paper layer of the first semi-finished product, the first release paper layer being formed by die-cutting the first release paper; along the width direction of the first release paper, the first tear-off mark protrudes from one end surface of the first release paper layer. When assembling the battery buffer to the battery cell, it is convenient to tear off the first release paper layer through the first tear-off mark, which is conducive to improving the assembly efficiency of the battery buffer.

[0011] In some embodiments, the unwinding assembly is also used to unwind the third release paper; the production equipment also includes a fourth die-cutting device and a third transfer mechanism, the fourth die-cutting device is used to die-cut the third release paper into a third release paper layer, and the third transfer mechanism is used to transfer the third release paper layer to the side of the second semi-finished product provided with the second buffer strip. The third release paper layer can cover the second buffer strip and the first buffer strip, or the third release paper layer can cover the second buffer strip and the third buffer strip, thereby protecting the buffer strip.

[0012] In some embodiments, the fourth die-cutting device is further used to die-cut a second tear-off mark on the third release paper layer, and along the width direction of the third release paper, the second tear-off mark protrudes from one end surface of the third release paper layer. When the battery buffer is assembled to the battery cell, it is convenient to tear off the third release paper layer through the second tear-off mark, which is conducive to improving the assembly efficiency of the battery buffer.

[0013] In some embodiments, the unwinding assembly is also used to unwind the first protective film; the production equipment also includes a third attaching mechanism, the third attaching mechanism is used to attach the first protective film to the first surface of the third release paper, and the first surface is arranged opposite to the second surface of the third release paper used to attach the first buffer strip. The first protective film can support the third release paper layer, and a layer of the first protective film is formed on the outer side of the third release paper layer facing away from the first release paper layer, which is conducive to improving the anti-deformation ability of the battery buffer and facilitating the assembly of the battery buffer.

[0014] In some embodiments, the unwinding assembly is also used to unwind the second protective film; the production equipment also includes a fourth attaching mechanism, which is located upstream of the first die-cutting device along the tape-feeding direction of the first release paper; the fourth attaching mechanism is used to attach the second protective film to the third surface of the first release paper, and the third surface is arranged opposite to the fourth surface of the first release paper used to attach the first buffer strip and the second material strip. The second protective film can support the first release paper, and a layer of the second protective film is formed on the outside of the first release paper facing away from the first buffer strip and the second material strip, which is conducive to improving the deformation resistance of the first release paper and facilitating the subsequent production process of the battery buffer.

[0015] In some embodiments, the unwinding assembly is also used to unwind the second single-sided tape; the production equipment also includes a fourth attaching mechanism, which is located upstream of the first die-cutting device along the tape feeding direction of the first release paper, and the fourth attaching mechanism is used to adhere the second single-sided tape to the fourth surface of the first release paper, and the fourth surface is used to attach the first buffer strip and the second material strip. When assembling the battery buffer, after tearing off the first release paper layer and the third release paper layer, the first buffer strip or the third buffer strip, and the second buffer strip can be kept in a frame-like structure by the second single-sided tape, which is conducive to reducing the possibility of displacement of the buffer strip during assembly, transportation, etc., and the second single-sided tape can also be bonded to one of the battery cells, which is conducive to improving the assembly stability between the battery buffer and the battery cell.

[0016] In some embodiments, the unwinding assembly is also used to unwind the double-sided tape; the production equipment also includes a fifth attaching mechanism, which is located upstream of the first attaching mechanism along the running direction of the first release paper, and is used to attach the double-sided tape to both sides of the first release paper along its width direction for bonding the second material tape. As a result, the second material tape only needs to have a single-sided adhesive backing, which is conducive to simplifying the process.

[0017] According to the second aspect of the present application, the embodiments of the present application also provide a production method for producing battery buffer components using the production equipment provided by any embodiment of the first aspect of the present application, the production method comprising: die-cutting a first material strip into a first buffer strip, and transferring the first buffer strip to a first release paper, wherein the length direction of the first buffer strip is perpendicular to the tape running direction of the first release paper; attaching a second material strip to the first release paper, and making the second material strip located on one side of the first buffer strip along its own length direction; and cutting the second material strip into second buffer strips along the width direction of the first release paper.

[0018] In some embodiments, the first material strip is die-cut into a first buffer strip, and the first buffer strip is transferred to a first release paper, including: laminating the first support film and the first material strip, and asynchronously die-cutting the first material strip into a first strip along the width direction of the first material strip; the width direction of the first material strip is perpendicular to the running direction of the first material strip, and the width direction of the first material strip is parallel to the running direction of the first material strip; transferring the first material strip to the second support film; die-cutting the first material strip along the running direction of the second support film to form a first buffer strip; transferring the first buffer strip to the first release paper.

[0019] In some embodiments, the production method of the embodiment of the present application further includes: cutting the first buffer strip into third buffer strips along the width direction of the first release paper.

[0020] In some embodiments, after the second material strip is cut into second buffer strips along the width direction of the first release paper, the production method of the embodiment of the present application also includes: laminating the second release paper to cover the first buffer strip and the second buffer strip, and die-cutting the second release paper and the first release paper to form a first semi-finished product in a sheet form; bonding the first single-sided tape to the second release paper layer of the first semi-finished product, and the second release paper layer is formed by die-cutting the second release paper; peeling off and recovering the first single-sided tape and the second release paper layer from the first semi-finished product to form a second semi-finished product.

[0021] In some embodiments, die-cutting the second release paper and the first release paper includes: die-cutting a first tear-off mark on the first release paper layer; the first release paper layer is formed by die-cutting the first release paper, and along the width direction of the first release paper, the first tear-off mark protrudes from one of the end faces of the first release paper layer.

[0022] In some embodiments, after forming the second semi-finished product, the production method of the embodiment of the present application further includes: die-cutting the third release paper into a third release paper layer; and transferring the third release paper layer to a side of the second semi-finished product provided with the second buffer strip.

[0023] In some embodiments, die-cutting the third release paper into a third release paper layer includes: die-cutting a second tear-off mark on the third release paper layer; along the width direction of the third release paper, the second tear-off mark protrudes from one end surface of the third release paper layer.

[0024] In some embodiments, before die-cutting the third release paper into a third release paper layer, the production method of an embodiment of the present application also includes: attaching a first protective film to a first surface of the third release paper, the first surface being arranged relative to a second surface of the third release paper for bonding to a first buffer strip.

[0025] In some embodiments, before transferring the first buffer strip to the first release paper, the production method of the embodiment of the present application also includes: bonding a second protective film to the third surface of the first release paper, and the third surface and the fourth surface of the first release paper are arranged opposite to each other for attaching the first buffer strip and the second material strip.

[0026] In some embodiments, before transferring the first buffer strip to the first release paper, the production method of the embodiment of the present application further includes: bonding a second single-sided tape to a fourth surface of the first release paper for attaching the first buffer strip and the second material tape.

[0027] In some embodiments, before attaching the second material tape to the first release paper, the production method of the embodiment of the present application further includes: attaching double-sided tape to both sides of the first release paper along its width direction for bonding the second material tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the structure of the production equipment of the battery buffer provided in some embodiments of the present application.

[0030] Figure 2 yes Figure 1 A schematic structural diagram of the first die-cutting device of the production equipment shown.

[0031] Figure 3 It is a schematic diagram of the structure after the production equipment provided in some embodiments of the present application die-cuts the first material tape into the first material strip.

[0032] Figure 4 It is a schematic diagram of the structure after the production equipment provided in some embodiments of the present application die-cuts the first material strip into the first buffer strip.

[0033] Figure 5 It is a schematic diagram of the structure after the production equipment provided in some embodiments of the present application transfers the first buffer strip to the first release paper.

[0034] Figure 6 It is a schematic diagram of the structure after the production equipment provided in some embodiments of the present application die-cuts the first buffer strip and the second material strip.

[0035] Figure 7 It is a schematic cross-sectional view of a first semi-finished product produced by the production equipment provided in some embodiments of the present application.

[0036] Figure 8 It is a schematic cross-sectional view of a second semi-finished product produced by the production equipment provided in some embodiments of the present application.

[0037] Fig. 9 It is a cross-sectional schematic diagram of a battery buffer produced by the production equipment provided in some embodiments of the present application.

[0038] Fig.10 It is a schematic structural diagram of the first release paper layer produced by the production equipment provided in some embodiments of the present application.

[0039] Fig.11 It is a schematic diagram of the structure of the third release paper layer produced by the production equipment provided in some embodiments of the present application.

[0040] Fig.12 It is a schematic cross-sectional view of a process product produced by the production equipment provided in some embodiments of the present application.

[0041] Fig.13 It is a cross-sectional schematic diagram of a battery buffer produced by production equipment provided in other embodiments of the present application.

[0042] Fig.14 It is a flow chart of a production method for producing battery buffer components using production equipment provided in some embodiments of the present application.

[0043] Fig.15 It is a schematic diagram of the process of die-cutting a first material strip into a first buffer strip and transferring the first buffer strip to a first release paper in the production method provided in some embodiments of the present application.

[0044] Fig.16 It is a flow chart of a production method for producing battery buffer components using production equipment provided in other embodiments of the present application.

[0045] In the attached figure:

[0046] Production equipment 1, a first unwinding mechanism 11, a second unwinding mechanism 12, a third unwinding mechanism 13, a fourth unwinding mechanism 14, a fifth unwinding mechanism 15, a sixth unwinding mechanism 16, a seventh unwinding mechanism 17, an eighth unwinding mechanism 18, a ninth unwinding mechanism 19, a tenth unwinding mechanism 110, an eleventh unwinding mechanism 111, a twelfth unwinding mechanism 112, a first die-cutting device 20, a first die-cutting mechanism 21, a first transfer mechanism 22, a second die-cutting mechanism 23, a second transfer mechanism 24, a first attaching mechanism 31, a second attaching mechanism 32, a third attaching mechanism 33, a fourth attaching mechanism 34, a fifth attaching mechanism 35, a second die-cutting device 40, a first recovery mechanism 51, a second recovery mechanism 52, a third recovery mechanism 53, a fourth recovery mechanism 54, a fifth recovery mechanism 55, a sixth recovery mechanism 56, a third die-cutting device 60, a fourth die-cutting device 81, and a third transfer mechanism 82;

[0047] First release paper 2, first release paper layer 201, first tear mark 202, third surface 203, third surface 204;

[0048] First material strip 3, first buffer strip 301, first material strip 302, third buffer strip 303;

[0049] Second material strip 4, second buffer strip 401;

[0050] A third release paper 7, a third release paper layer 701, a second tear-off mark 702, a first surface 703, and a second surface 704;

[0051] Battery buffer 9, first semi-finished product 901, second semi-finished product 902;

[0052] Second release paper a3, second release paper layer a31;

[0053] The first protective film 8, the first supporting film a1, the second supporting film a2, the first single-sided tape a4, the second protective film a5, the second single-sided tape a6, and the double-sided tape a7. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0055] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0056] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0057] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0059] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0060] The term “plurality” used in this application refers to two or more (including two).

[0061] In the embodiments of the present application, "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; at the same time, "vertical" includes not only the absolutely vertical situation, but also the roughly vertical situation conventionally recognized in engineering.

[0062] A battery device usually includes a plurality of battery cells stacked together to meet the voltage requirements of the electrical equipment. A buffer frame is usually provided between two adjacent battery cells to facilitate heat dissipation and buffer the expansion and deformation of the battery cells. The buffer frame is roughly in the shape of a square, and a buffer space is defined inside the buffer frame. For the preparation of the buffer frame, one feasible way is to cut off the middle of a complete buffer sheet to make a hollow square buffer frame. This method will cause a lot of waste of raw materials and increase costs.

[0063] The buffer frame is usually made of microporous foam material. Due to the high thermal management requirements of the local area of ​​the battery cell, at least one side of the buffer frame can be replaced with silicone rubber or other heat-resistant and high-strength materials. For the preparation of such a buffer frame, a feasible way is to first prepare a plurality of buffer bars, at least some of which are made of different materials, and then assemble the plurality of buffer bars together through a jig to form a frame structure. The production efficiency of such a buffer frame is low, which affects the production efficiency of the entire battery device.

[0064] In view of this, the embodiment of the present application provides a technical solution, which is to form a battery buffer by die-cutting the first material strip into a strip-shaped first buffer strip and asynchronously transferring it to the first release paper, and then attaching the second material strip to both sides of the first buffer strip along its own length direction, and then die-cutting the second material strip. This technical solution realizes the asynchronous docking and lamination of the first material strip and the second material strip through standardized design, which can reduce the amount of cutting waste of the first material strip and the second material strip, reduce the waste of raw materials, and help reduce costs. On the other hand, it is also conducive to improving production efficiency.

[0065] The technical solution provided in the embodiment of the present application can be applied to the production equipment of battery buffer components. The production equipment of battery buffer components provided in the embodiment of the present application is introduced below in conjunction with the accompanying drawings.

[0066] Figure 1 is a schematic diagram of the structure of a battery buffer production device provided in some embodiments of the present application, Figure 2 yes Figure 1 The schematic diagram of the structure of the first die-cutting device of the production equipment shown, Figure 3 is a schematic diagram of the structure after the production equipment provided in some embodiments of the present application die-cuts the first material strip into the first material strip, Figure 4 is a schematic diagram of the structure after the production equipment provided in some embodiments of the present application die-cuts the first material strip into the first buffer strip, Figure 5 is a schematic diagram of the structure of the production equipment provided in some embodiments of the present application after the first buffer strip is transferred to the first release paper, Figure 6 is a schematic diagram of the structure after the production equipment provided in some embodiments of the present application die-cuts the first buffer strip and the second material strip, Figure 7 is a cross-sectional schematic diagram of a first semi-finished product produced by a production device provided in some embodiments of the present application, Figure 8 is a cross-sectional schematic diagram of a second semi-finished product produced by a production device provided in some embodiments of the present application, Fig. 9 is a cross-sectional schematic diagram of a battery buffer produced by a production device provided in some embodiments of the present application, Fig.10 is a schematic structural diagram of a first release paper layer produced by a production device provided in some embodiments of the present application, Fig.11 is a schematic structural diagram of a third release paper layer produced by a production device provided in some embodiments of the present application, Fig.12 is a schematic cross-sectional view of a product produced by a production device according to some embodiments of the present application. Fig.13 It is a cross-sectional schematic diagram of a battery buffer produced by the production equipment provided in some embodiments of the present application.

[0067] Reference Figures 1 to 13The production equipment 1 of the battery buffer provided in the embodiment of the present application includes an unwinding assembly, a first die-cutting device 20, a first attaching mechanism 31 and a second die-cutting device 40. The unwinding assembly is used to unwind the first release paper 2, the first material strip 3 and the second material strip 4. The first die-cutting device 20 is used to die-cut the first material strip 3 into a first buffer strip 301, and transfer the first buffer strip 301 to the first release paper 2, and the length direction of the first buffer strip 301 is perpendicular to the tape running direction of the first release paper 2. The first attaching mechanism 31 is used to attach the second material strip 4 to the first release paper 2, and make the second material strip 4 located on at least one side of the first buffer strip 301 along its own length direction. The second die-cutting device 40 is used to cut the second material strip 4 into the second buffer strip 401 along the width direction of the first release paper 2.

[0068] The battery buffer 9 produced by the production equipment 1 of the embodiment of the present application is used to be assembled between two adjacent battery cells to form a buffer space between the two battery cells, which is beneficial to the heat dissipation of the battery cells and buffers the expansion and deformation of the battery cells.

[0069] The battery buffer 9 may include a buffer structure and a protective structure arranged on the outside of the buffer structure. The buffer structure includes at least a portion of the first buffer strip 301 and the second buffer strip 401. The protective structure includes at least a portion of the first release paper 2. When the battery buffer 9 is assembled, the protective structure can be removed and the buffer structure can be installed between two battery cells.

[0070] The unwinding assembly may include a plurality of unwinding mechanisms independently arranged from each other, each unwinding mechanism being used to unwind a corresponding material. The unwinding mechanism may include a rotatably arranged unwinding roller, and the material is wound around the unwinding roller.

[0071] Optionally, the unwinding assembly includes a first unwinding mechanism 11, a second unwinding mechanism 12 and a third unwinding mechanism 13, the first unwinding mechanism 11 is used to unwind the first release paper 2, the second unwinding mechanism 12 is used to unwind the first material tape 3, and the third unwinding mechanism 13 is used to unwind the second material tape 4.

[0072] The materials of the first material strip 3 and the second material strip 4 may be the same or different.

[0073] Optionally, the first material strip 3 may be foam. For example, the first material strip 3 may include microporous foamed polypropylene material, which has excellent shock absorption, cushioning, heat insulation, temperature resistance and other properties.

[0074] Optionally, the second material strip 4 may be made of silicone, rubber, etc.

[0075] There may be one or two second unwinding mechanisms 12. When there are two second unwinding mechanisms 12, the two second unwinding mechanisms 12 may be used to unwind first material strips 3 of different materials respectively.

[0076] There may be two third unwinding mechanisms 13. The two third unwinding mechanisms 13 may be used to unwind two second material strips 4 of the same material, or may be used to unwind two second material strips 4 of different materials. Accordingly, the first attaching mechanism 31 is used to attach the two second material strips 4 to the first release paper 2, and the two second material strips 4 are respectively located on both sides of the first buffer strip 301 along its own length direction.

[0077] The first die-cutting device 20 can use an asynchronous cutter to die-cut the first material strip 3 into a strip-shaped first buffer strip 301 .

[0078] The first die-cutting device 20 can die-cut the first material strip 3 into the first buffer strip 301 through one die-cutting operation, or can die-cut the first material strip 3 into the first buffer strip 301 through multiple die-cutting operations.

[0079] Reference Figure 5 The first die-cutting device 20 transfers the first buffer strip 301 to the first release paper 2 in a predetermined posture, wherein the length direction of the first buffer strip 301 is perpendicular to the running direction of the first release paper 2, and the width direction of the first buffer strip 301 is parallel to the running direction of the first release paper 2.

[0080] The first die-cutting device 20 can die-cut the first material tape 3 at preset time intervals to form a plurality of first buffer strips 301. The first die-cutting device 20 can also transfer the plurality of first buffer strips 301 to the first release paper 2 at preset intervals. In other words, along the running direction of the first release paper 2, the plurality of first buffer strips 301 are spaced apart on the first release paper 2.

[0081] The first buffer strip 301 can be used as a side strip of a battery buffer component 9 as a whole, and the first buffer strip 301 can also be used as a side strip of two battery buffer components 9 after being cut.

[0082] The first attaching mechanism 31 can attach the second material tape 4 to the first release paper 2 in a predetermined posture and predetermined position. The predetermined posture of the second material tape 4 is that the length direction of the second material tape 4 is parallel to the running direction of the first release paper 2, and the width direction of the second material tape 4 is parallel to the width direction of the first release paper 2. The predetermined position of the second material tape 4 is that the second material tape 4 is located on one side of the length direction of the first buffer strip 301. When there are two second material tapes 4, the first buffer strip 301 is located between the two second material tapes 4.

[0083] The second die-cutting device 40 cuts the second material strip 4 along the width direction of the first release paper 2, which means that the cutter of the second die-cutting device 40 extends roughly along the width direction of the first release paper 2, so that the second material strip 4 can be cut into multiple second buffer strips 401 distributed along the length direction of the second material strip 4.

[0084] The length direction of the second buffer strip 401 is consistent with that of the second material strip 4 , and the length direction of the first buffer strip 301 is perpendicular to that of the second buffer strip 401 . Two oppositely disposed second buffer strips 401 and two oppositely disposed first buffer strips 301 can be enclosed to form a frame structure.

[0085] In the embodiment of the present application, the first material strip 3 is die-cut into a strip-shaped first buffer strip 301 and asynchronously transferred to the first release paper 2, and then the second material strip 4 is attached to both sides of the first buffer strip 301 along its own length direction, and then the second material strip 4 is die-cut to form a frame-shaped buffer structure. This technical solution realizes the asynchronous docking and lamination of the first material strip 3 and the second material strip 4 through a standardized design. On the one hand, it can reduce the amount of cutting waste of the first material strip 3 and the second material strip 4, reduce the waste of raw materials, and help reduce costs. On the other hand, it is also conducive to improving the production efficiency of the battery buffer 9.

[0086] In some embodiments, reference Figure 1 , Figure 3 and Figure 4 The unwinding assembly is also used to unwind the first support film a1 and the second support film a2. The first die-cutting device 20 includes a first die-cutting mechanism 21, a first transfer mechanism 22, a second die-cutting mechanism 23 and a second transfer mechanism 24. The first die-cutting mechanism 21 is used to fit the first support film a1 and the first material tape 3, and asynchronously die-cut the first material tape 3 into a strip-shaped first material strip 302 along the width direction of the first material tape 3. The width direction of the first material tape 3 is perpendicular to the running direction of the first material tape 3, and the width direction of the first material strip 302 is parallel to the running direction of the first material tape 3. The first transfer mechanism 22 is used to transfer the first material strip 302 to the second support film a2. The second die-cutting mechanism 23 is used to die-cut the first material strip 302 along the running direction of the second support film a2 to form a first buffer strip 301. The second transfer mechanism 24 is used to transfer the first buffer strip 301 to the first release paper 2. The unwinding assembly further includes a fourth unwinding mechanism 14 and a fifth unwinding mechanism 15 . The fourth unwinding mechanism 14 is used to unwind the first supporting film a1 , and the fifth unwinding mechanism 15 is used to unwind the second supporting film a2 .

[0087] Before the first material tape 3 is bonded to the first support film a1, a treatment agent can be applied to both sides of the first material tape 3 in advance and double-sided tape can be applied thereto. Before the first material tape 3 is bonded to the first support film a1, the protective layer of the double-sided tape on the side of the first material tape 3 facing the first support film a1 can be peeled off, so that the first material tape 3 is bonded to the first support film a1, and in the subsequent process, it is bonded to the second support film a2 and the first release paper 2 in sequence.

[0088] The first die-cutting mechanism 21 die-cuts the first material strip 3 along the width direction of the first material strip 3, which means that the cutter of the first die-cutting mechanism 21 extends substantially along the width direction of the first material strip 3, so as to die-cut the first material strip 3 into a plurality of first material strips 302 distributed along the length direction of the first material strip 3, wherein the first material strips 302 are strip-shaped structures extending along the width direction of the first material strip 3. The width dimension of the first buffer strip 301 can be determined by the first die-cutting mechanism 21.

[0089] The second die-cutting mechanism 23 die-cuts the first material strip 302 along the running direction of the second support film a2, which means that the cutter of the second die-cutting mechanism 23 extends roughly along the running direction of the second support film a2, and the second die-cutting mechanism 23 can cut at least one end of the first material strip 302 along its own length direction to determine the length dimension of the first buffer strip 301.

[0090] The first support film a1 is used to support the first material strip 3, so as to facilitate die-cutting the first material strip 3. The second support film a2 is used to support the first material strip 302, so as to facilitate die-cutting the first material strip 302. The first support film a1 and the second support film a2 are both film structures used in the process of forming the first buffer strip 301 from the first material strip 3, and belong to process films used in the preparation process of the battery buffer 9, and do not form a part of the battery buffer 9.

[0091] The materials of the first supporting film a1 and the second supporting film a2 may be the same or different.

[0092] Optionally, the material of the first support film a1 may include polyethylene terephthalate or other suitable materials. The thickness of the first support film a1 may be 0.06 mm-0.08 mm.

[0093] Optionally, the material of the second support film a2 may include polyethylene terephthalate or other suitable materials. The thickness of the second support film a2 may be 0.06 mm-0.08 mm.

[0094] In the embodiment of the present application, transfer refers to transferring the transferred object from one support structure and attaching it to another support structure. For example, the first transfer mechanism 22 can transfer the first material strip 302 from the first support film a1 and attach it to the second support film a2; the second transfer mechanism 24 can transfer the first buffer strip 301 from the second support film a2 and attach it to the first release paper 2.

[0095] In some examples, the first transfer mechanism 22 can transfer the first material strip 302 to the second support film a2 in an asynchronous manner. In other words, the spacing between the plurality of first material strips 302 on the second support film a2 is different from the spacing between the plurality of first material strips 302 on the first support film a1. The second transfer mechanism 24 can transfer the first buffer strip 301 to the first release paper 2 in a synchronous or asynchronous manner.

[0096] In some examples, the first transfer mechanism 22 may also transfer the first material strips 302 to the second support film a2 in a synchronous manner, and the spacing between the plurality of first material strips 302 on the second support film a2 is the same as the spacing between the plurality of first material strips 302 on the first support film a1. The second transfer mechanism 24 may transfer the first buffer strips 301 to the first release paper 2 in an asynchronous manner, so that two adjacent first buffer strips 301 have sufficient spacing on the first release paper 2.

[0097] The first die-cutting device 20 of the embodiment of the present application forms the first buffer strip 301 by two die-cutting operations, which is beneficial to improving the position accuracy of the first buffer strip 301 on the first release paper 2, reducing the adverse effect of the position deviation of the first buffer strip 301 on the attachment of the second material strip 4, and reducing the risk of the first buffer strip 301 overlapping with the second material strip 4 or the distance between them being too large, which is beneficial to improving the production efficiency of the battery buffer 9.

[0098] The first die-cutting device 20 of the embodiment of the present application supports the first material strip 3 during the first die-cutting process through the first support film a1, and supports the first material strip 3 during the second die-cutting process through the second support film a2, which is beneficial to improving the die-cutting effect of the first buffer strip 301 and reducing the possibility of damage to the first release paper 2 caused by the die-cutting operation of the first material strip 3.

[0099] In some embodiments, the production equipment 1 further includes a first recycling mechanism 51 and a second recycling mechanism 52, and the first recycling mechanism 51 and the second recycling mechanism 52 are used to recycle the first supporting film a1 and the second supporting film a2, respectively.

[0100] The first recycling mechanism 51 and the second recycling mechanism 52 may include rotatable winding rollers, and the first supporting film a1 and the second supporting film a2 may be respectively wound up on the winding rollers of the first recycling mechanism 51 and the second recycling mechanism 52 .

[0101] In the embodiment of the present application, the first support film a1 and the second support film a2 are respectively recovered by the first recovery mechanism 51 and the second recovery mechanism 52 , which is beneficial to the reuse of the support film materials and improves the material utilization rate.

[0102] In some embodiments, the second die-cutting device 40 is further used to cut the first buffer strip 301 into third buffer strips 303 along the width direction of the first release paper 2 .

[0103] The second die-cutting device 40 cuts the first buffer strip 301 along the width direction of the first release paper 2, which means that the cutter of the second die-cutting device 40 extends roughly along the width direction of the first release paper 2 to cut the first buffer strip 301 into two third buffer strips 303 distributed along the running direction of the first release paper 2.

[0104] The direction in which the second die-cutting device 40 cuts the second material strip 4 is the same as the direction in which the second die-cutting device 40 cuts the first buffer strip 301. The second die-cutting device 40 can cut the second material strip 4 and the first buffer strip 301 simultaneously in one cutting operation, which is conducive to simplifying the process and improving production efficiency. In addition, the edges of the second buffer strip 401 and the third buffer strip 303 formed by cutting along the running direction of the first release paper 2 can be arranged flush, which is convenient for determining the product outer edge of the entire battery buffer 9 and improving the production efficiency of the battery buffer 9.

[0105] Alternatively, the second die-cutting device 40 may also cut the second material strip 4 and the first buffer strip 301 separately in multiple cutting operations.

[0106] The first buffer strip 301 is divided into two third buffer strips 303, and the two third buffer strips 303 can respectively form one of the side strips of the two battery buffers 9, which is beneficial to reduce the number of die-cutting and transfer times of the first die-cutting device 20, simplify the production process, and improve production efficiency.

[0107] In some embodiments, reference Figure 1 , Figure 7 and Figure 8 The unwinding assembly is also used to unwind the second release paper a3 and the first single-sided tape a4. The production equipment 1 also includes a third die-cutting device 60 and a second attaching mechanism 32. The third die-cutting device 60 is used to attach the second release paper a3 to cover the first buffer strip 301 and the second buffer strip 401, and to die-cut the second release paper a3 and the first release paper 2 to form a sheet-like first semi-finished product 901. The second attaching mechanism 32 is used to adhere the first single-sided tape a4 to the second release paper layer a31 of the first semi-finished product 901, and the second release paper layer a31 is formed by die-cutting the second release paper a3. The production equipment 1 also includes a third recycling mechanism 53, which is used to peel off and recycle the first single-sided tape a4 and the second release paper layer a31 from the first semi-finished product 901 to form a second semi-finished product 902.

[0108] The unwinding mechanism further includes a sixth unwinding mechanism 16 and a seventh unwinding mechanism 17. The sixth unwinding mechanism 16 is used for unwinding the second release paper a3, and the seventh unwinding mechanism 17 is used for unwinding the first single-sided adhesive tape a4.

[0109] The third die-cutting device 60 covers the first buffer strip 301 and the second buffer strip 401 with the second release paper a3 , and the first buffer strip 301 and the second buffer strip 401 are sandwiched between the first release paper 2 and the second release paper a3 .

[0110] The third die-cutting device 60 can die-cut the second release paper a3 and the first release paper 2 along the width direction of the first release paper 2 to form a plurality of first semi-finished products 901 distributed along the running direction of the first release paper 2 .

[0111] The first semi-finished product 901 may include a first release paper layer 201, a second release paper layer a31, and a first buffer strip 301 and a second buffer strip 401 sandwiched between the first release paper layer 201 and the second release paper layer a31 after the first release paper 2 is die-cut by the third die-cutting device 60. Alternatively, the first semi-finished product 901 may include a first release paper layer 201, a second release paper layer a31, and a third buffer strip 303 and a second buffer strip 401 sandwiched between the first release paper layer 201 and the second release paper layer a31.

[0112] The first single-sided tape a4 may be a tape with greater viscosity to enhance the bonding strength between the first single-sided tape a4 and the second release paper layer a31. Through the bonding effect between the first single-sided tape a4 and the second release paper layer a31, the third recycling mechanism 53 can more effectively separate and recycle the second release paper layer a31 from the first semi-finished product 901.

[0113] Optionally, the first single-sided adhesive tape a4 may be green adhesive tape.

[0114] The second semi-finished product 902 is formed after the second release paper layer a31 is removed from the first semi-finished product 901. The second semi-finished product 902 may include the first release paper layer 201, and the first buffer strip 301 and the second buffer strip 401 disposed on the surface of the first release paper layer 201; or the second semi-finished product 902 may include the first release paper layer 201, and the third buffer strip 303 and the second buffer strip 401 disposed on the surface of the first release paper layer 201.

[0115] The second release paper a3 can cover the adhesive layer on the surface of the first buffer strip 301 and the second buffer strip 401 , thereby reducing the amount of adhesive adhering to the third die-cutting device 60 , which is beneficial to extending the service life of the third die-cutting device 60 .

[0116] In some embodiments, the production equipment 1 may further include a protective layer recovery mechanism, and the protective layer recovery mechanism is used to recover the protective layer of the surface adhesive layer of the first buffer strip 301 and the second buffer strip 401 .

[0117] The surfaces of the first buffer strip 301 and the second buffer strip 401 may be provided with double-sided tape. Before the second release paper a3 is attached to and covers the first buffer strip 301 and the second buffer strip 401, the protective layer of the surface adhesive layer of the first buffer strip 301 and the second buffer strip 401 may be peeled off and recycled in advance by the protective layer recycling mechanism.

[0118] In some embodiments, reference Fig.10The third die-cutting device 60 is also used to die-cut a first tear-off mark 202 on the first release paper layer 201 of the first semi-finished product 901, where the first release paper layer 201 is formed by die-cutting the first release paper 2. Along the width direction of the first release paper 2, the first tear-off mark 202 may protrude from one end surface of the first release paper layer 201.

[0119] Along the width direction of the first release paper 2 , the first tear-off mark 202 may protrude from the second buffer strip 401 , so that the first release paper layer 201 can be easily torn off through the first tear-off mark 202 when the battery buffer 9 is assembled to the battery cell, thereby improving the assembly efficiency of the battery buffer 9 .

[0120] In some embodiments, the unwinding assembly is also used to unwind the third release paper 7. The production equipment 1 also includes a fourth die-cutting device 81 and a third transfer mechanism 82, the fourth die-cutting device 81 is used to die-cut the third release paper 7 into a third release paper layer 701, and the third transfer mechanism 82 is used to transfer the third release paper layer 701 to a side of the second semi-finished product 902 provided with the second buffer strip 401.

[0121] The unwinding assembly further includes a twelfth unwinding mechanism 112 , which is used for unwinding the third release paper 7 .

[0122] The third transfer mechanism 82 can transfer the third release paper layer 701 to the second semi-finished product 902 , and allow the second buffer strip 401 to be sandwiched between the third release paper layer 701 and the first release paper layer 201 .

[0123] The third release paper layer 701 may cover the second buffer strip 401 and the first buffer strip 301 , or the third release paper layer 701 may cover the second buffer strip 401 and the third buffer strip 303 , thereby protecting the buffer strips.

[0124] When assembling the battery buffer 9, one of the third release paper layer 701 and the first release paper layer 201 can be torn off and attached to one of the battery cells, and then the other of the third release paper layer 701 and the first release paper layer 201 can be torn off and then attached to the other battery cell. The buffer frame formed by the second buffer bar 401 and the first buffer bar 301, or the buffer frame formed by the second buffer bar 401 and the third buffer bar 303 can be located between two adjacent battery cells.

[0125] In some embodiments, reference Fig.11 The fourth die-cutting device 81 is also used to die-cut a second tear-off mark 702 on the third release paper layer 701. Along the width direction of the third release paper 7, the second tear-off mark 702 can protrude from one end surface of the third release paper layer 701.

[0126] Along the width direction of the third release paper 7 , the second tear-off mark 702 may protrude from the second buffer strip 401 , making it easy to tear off the third release paper layer 701 through the second tear-off mark 702 when assembling the battery buffer 9 to the battery cell, thereby improving the assembly efficiency of the battery buffer 9 .

[0127] Along the thickness direction of the first release paper layer 201 , the first tearing mark position 202 and the second tearing mark position 702 are staggered with each other, so as to facilitate tearing off the first release paper layer 201 and the third release paper layer 701 respectively.

[0128] In some embodiments, reference Figure 1 and Fig. 9 The unwinding assembly is also used to unwind the first protective film 8. The production equipment 1 also includes a third attaching mechanism 33, which is used to attach the first protective film 8 to the first surface 703 of the third release paper 7, and the first surface 703 is arranged opposite to the second surface 704 of the third release paper 7 for attaching the first buffer strip 301.

[0129] The unwinding assembly further includes an eighth unwinding mechanism 18 , which is used for unwinding the first protective film 8 .

[0130] The third release paper 7 has a first surface 703 and a second surface 704 that are opposite to each other. The second surface 704 is used for attaching the first buffer strip 301 . The first protective film 8 can be adhered to the first surface 703 of the third release paper 7 .

[0131] The fourth die-cutting device 81 can be used to die-cut the third release paper 7 and the first protective film 8 together.

[0132] Optionally, the material of the first protective film 8 may include polyethylene terephthalate or other suitable materials. The thickness of the first protective film 8 may be 0.07 mm-0.08 mm.

[0133] The first protective film 8 can support the third release paper layer 701 , and a first protective film 8 is formed on the outer side of the third release paper layer 701 facing away from the first release paper layer 201 , which is beneficial to improving the deformation resistance of the battery buffer 9 and facilitating the assembly of the battery buffer 9 .

[0134] In some embodiments, reference Figure 1 and Fig.12 The unwinding assembly is also used to unwind the second protective film a5. The production equipment 1 also includes a fourth attaching mechanism 34, which is located upstream of the first die-cutting device 20 along the running direction of the first release paper 2. The fourth attaching mechanism 34 is used to attach the second protective film a5 to the third surface 203 of the first release paper 2, and the third surface 203 is arranged opposite to the fourth surface 204 of the first release paper 2 for attaching the first buffer strip 301 and the second material strip 4.

[0135] The unwinding assembly further includes a ninth unwinding mechanism 19, which is used for unwinding the second protective film a5.

[0136] The material of the second protective film a5 may be the same as or different from the material of the first protective film 8 .

[0137] Optionally, the material of the second protective film a5 may include polyethylene terephthalate or other suitable materials. The thickness of the second protective film a5 may be less than the thickness of the first release paper 2, and the thickness of the second protective film a5 may be 0.06 mm-0.08 mm.

[0138] The second protective film a5 can support the first release paper 2, and form a layer of second protective film a5 on the outer side of the first release paper 2 facing away from the first buffer strip 301 and the second material strip 4, which is beneficial to improving the deformation resistance of the first release paper 2 and facilitating the subsequent production process of the battery buffer component 9.

[0139] In some embodiments, the production equipment 1 further includes a fourth recycling mechanism 54 , which can be disposed at the most downstream of the production process of the production equipment 1 , and is used to separate the second protective film a5 from the first release paper layer 201 and recycle the second protective film a5 .

[0140] In some embodiments, reference Figure 1 , Fig.12 and Fig.13 The unwinding assembly is also used to unwind the second single-sided tape a6. The production equipment 1 also includes a fourth attaching mechanism 34, which is located upstream of the first die-cutting device 20 along the tape feeding direction of the first release paper 2. The fourth attaching mechanism 34 is used to adhere the second single-sided tape a6 to the fourth surface 204 of the first release paper 2, and the fourth surface 204 is used to attach the first buffer strip 301 and the second material tape 4.

[0141] The unwinding assembly further includes a tenth unwinding mechanism 110, which is used for unwinding the second single-sided adhesive tape a6.

[0142] The fourth attaching mechanism 34 is located upstream of the first die-cutting device 20, and the fourth attaching mechanism 34 can adhere the second single-sided tape a6 to the fourth surface 204 before the first buffer strip 301 and the second material tape 4 are attached to the fourth surface 204 of the first release paper 2. The first buffer strip 301, the second material tape 4 or other structures attached to the first release paper 2 can all be attached to the second single-sided tape a6.

[0143] The third die-cutting device 60 simultaneously die-cuts the second single-sided adhesive tape a6 while die-cutting the first release paper 2 .

[0144] When assembling the battery buffer 9, after tearing off the first release paper layer 201 and the third release paper layer 701, the first buffer strip 301 or the third buffer strip 303, and the second buffer strip 401 can maintain a frame-like structure through the second single-sided tape a6, which is beneficial to reduce the possibility of displacement of the buffer strip during assembly, transportation, etc., and the second single-sided tape a6 can also be bonded to one of the battery cells, which is beneficial to improve the assembly stability between the battery buffer 9 and the battery cell.

[0145] In some embodiments, the second single-sided tape a6 has a release paper protective layer on one side of the adhesive layer, and the production equipment 1 further includes a fifth recycling mechanism 55, which is used to separate and recycle the release paper protective layer from the second single-sided tape a6.

[0146] In some embodiments, the unwinding assembly is also used to unwind the double-sided tape a7. The production equipment 1 also includes a fifth attaching mechanism 35, which is located upstream of the first attaching mechanism 31 along the running direction of the first release paper 2, and the fifth attaching mechanism 35 is used to attach the double-sided tape a7 to both sides of the first release paper 2 along its own width direction for bonding the second material tape 4.

[0147] The unwinding assembly includes an eleventh unwinding mechanism 111, and the eleventh unwinding mechanism 111 is used for unwinding the double-sided adhesive tape a7.

[0148] The double-sided tape a7 is adhered to the position of the third surface 203 for attaching the second material tape 4 .

[0149] Along the running direction of the first release paper 2 , the fifth attaching mechanism 35 may be located downstream of the fourth attaching mechanism 34 .

[0150] The fifth attaching mechanism 35 can also cut the double-sided tape a7, and attach the two double-sided tapes a7 formed by cutting to the two sides of the first release paper 2 along its own width direction respectively.

[0151] In the embodiment of the present application, a double-sided adhesive tape a7 is firstly attached to the first release paper 2, and the second material tape 4 only needs a single-sided adhesive backing, which is conducive to simplifying the process.

[0152] In some embodiments, the production equipment 1 further includes a sixth recycling mechanism 56, which is used to recycle the cut waste of the double-sided tape a7.

[0153] The embodiment of the present application also provides a method for producing battery buffer components using the production equipment 1 . Fig.14 is a flow chart of a production method for producing battery buffers using a production device provided in some embodiments of the present application, referring to Fig.14 The production method of producing a battery buffer by a production device provided in an embodiment of the present application includes:

[0154] Step S20, die-cutting the first material strip 3 into the first buffer strip 301, and transferring the first buffer strip 301 to the first release paper 2; wherein the length direction of the first buffer strip 301 is perpendicular to the running direction of the first release paper 2;

[0155] Step S40, attaching the second material tape 4 to the first release paper 2, and making the second material tape 4 located on at least one side of the first buffer strip 301 along its own length direction; and

[0156] Step S60 , cutting the second material strip 4 into second buffer strips 401 along the width direction of the first release paper 2 .

[0157] Fig.15 is a schematic diagram of a process of die-cutting a first material strip into a first buffer strip and transferring the first buffer strip to a first release paper in a production method provided in some embodiments of the present application. Fig.15 , die-cutting the first material strip 3 into the first buffer strip 301, and transferring the first buffer strip 301 to the first release paper 2, specifically may include: step S21, laminating the first support film a1 and the first material strip 3, and asynchronously die-cutting the first material strip 3 into a strip-shaped first material strip 302 along the width direction of the first material strip 3; wherein the width direction of the first material strip 3 is perpendicular to the running direction of the first material strip 3, and the width direction of the first material strip 302 is parallel to the running direction of the first material strip 3; step S22, transferring the first material strip 302 to the second support film a2; step S23, die-cutting the first material strip 302 along the running direction of the second support film a2 to form the first buffer strip 301; and step S24, transferring the first buffer strip 301 to the first release paper 2.

[0158] In some embodiments, the production method provided by the embodiments of the present application further includes: cutting the first buffer strip 301 into third buffer strips 303 along the width direction of the first release paper 2 .

[0159] It is understandable that the cutting of the first buffer strip 301 and the cutting of the second material strip 4 in step S80 may be performed simultaneously in one cutting process, or may be performed separately in different cutting processes.

[0160] Fig.16 is a flow chart of a production method for producing battery buffers using production equipment provided in some other embodiments of the present application. It should be noted that: Fig.16 Only one executable order of step S11 to step S83 is schematically shown, and steps S11 to step S83 may also have other suitable execution orders, which will not be repeated here one by one.

[0161] In some embodiments, reference Fig.16After the second material strip 4 is cut into second buffer strips 401 along the width direction of the first release paper 2, the production method provided in the embodiment of the present application further includes:

[0162] Step S71, laminating the first buffer strip 301 and the second buffer strip 401 with the second release paper a3, and die-cutting the second release paper a3 and the first release paper 2 to form a sheet-shaped first semi-finished product 901;

[0163] Step S72, bonding the first single-sided adhesive tape a4 to the second release paper layer a31 of the first semi-finished product 901, wherein the second release paper layer a31 is formed by die-cutting the second release paper a3; and

[0164] Step S73 , peeling off and recovering the first single-sided adhesive tape a4 and the second release paper layer a31 from the first semi-finished product 901 to form a second semi-finished product 902 .

[0165] In some embodiments, die-cutting the second release paper a3 and the first release paper 2 includes: die-cutting a first tear-off mark 202 on the first release paper layer 201. Along the width direction of the first release paper 2, the first tear-off mark 202 protrudes from one end surface of the first release paper layer 201.

[0166] In some embodiments, reference Fig.16 After forming the second semi-finished product 902, the production method provided in the embodiment of the present application further includes:

[0167] Step S82, die-cutting the third release paper 7 into a third release paper layer 701;

[0168] Step S83 , transferring the third release paper layer 701 to the side of the second semi-finished product 902 where the second buffer strip 401 is provided.

[0169] In some embodiments, die-cutting the third release paper 7 into the third release paper layer 701 includes: die-cutting a second tear mark 702 on the third release paper layer 701. Along the width direction of the third release paper 7, the second tear mark 702 protrudes from one end surface of the third release paper layer 701.

[0170] In some embodiments, reference Fig.16 Before the third release paper 7 is die-cut into the third release paper layer 701, the production method provided in the embodiment of the present application also includes: step S81, attaching the first protective film 8 to the first surface 703 of the third release paper 7, and the first surface 703 is arranged opposite to the second surface 704 of the third release paper 7 for bonding the first buffer strip 301.

[0171] In some embodiments, after transferring the third release paper layer 701 to the side of the second semi-finished product 902 provided with the second buffer strip 401 , the method provided in the embodiment of the present application may further include: die-cutting the shape of the product and removing the outer frame waste to form a battery buffer 9 .

[0172] In some embodiments, before transferring the first buffer strip 301 to the first release paper 2, the method provided in the embodiment of the present application also includes: step S11, bonding the second single-sided tape a6 on the fourth surface 204 of the first release paper 2 for attaching the first buffer strip 301 and the second material tape 4.

[0173] In some embodiments, reference Fig.16 Before transferring the first buffer strip 301 to the first release paper 2, the production method of the embodiment of the present application also includes: step S12, bonding the second protective film a5 to the third surface 203 of the first release paper 2, and the third surface 203 is arranged opposite to the fourth surface 204 of the first release paper 2 for attaching the first buffer strip 301 and the second material tape 4.

[0174] Optionally, step S12 may be performed before or after the second single-sided adhesive tape a6 is adhered to the third surface 203 of the first release paper 2 .

[0175] In some embodiments, reference Fig.16 Before attaching the second material tape 4 to the first release paper 2 , the production method provided in the embodiment of the present application further includes: step S13 , attaching the double-sided tape a7 to both sides of the first release paper 2 along its own width direction for bonding the second material tape 4 .

[0176] Optionally, step S13 can be performed before the first material strip 3 is die-cut into the first buffer strip 301 and the first buffer strip 301 is transferred to the first release paper 2, and after the second single-sided tape a6 is bonded to the third surface 203 of the first release paper 2. The production equipment 1 of the battery buffer provided in the embodiment of the present application includes an unwinding assembly, a first die-cutting device 20, a first attaching mechanism 31, a second die-cutting device 40, a third die-cutting device 60, a second attaching mechanism 32, a third recycling mechanism 53, a fourth die-cutting device 81, a third transfer mechanism 82, a third attaching mechanism 33, a fourth attaching mechanism 34 and a fifth attaching mechanism 35. The unwinding assembly is used to unwind the first release paper 2, the first material strip 3, the second material strip 4, the first support film a1, the second support film a2, the second release paper a3, the first single-sided tape a4, the third release paper 7, the first protective film 8, the second protective film a5, the second single-sided tape a6 and the double-sided tape a7. The first die-cutting device 20 includes a first die-cutting mechanism 21, a first transfer mechanism 22, a second die-cutting mechanism 23, and a second transfer mechanism 24. The first die-cutting mechanism 21 is used to attach the first support film a1 and the first material strip 3, and asynchronously die-cut the first material strip 3 into a strip-shaped first material strip 302 along the width direction of the first material strip 3. The first transfer mechanism 22 is used to asynchronously transfer the first material strip 302 to the second support film a2. The second die-cutting mechanism 23 is used to die-cut the first material strip 302 along the running direction of the second support film a2 to form a first buffer strip 301. The second transfer mechanism 24 is used to transfer the first buffer strip 301 to the first release paper 2. The first attachment mechanism 31 is used to attach the second material strip 4 to the first release paper 2, and make the second material strip 4 located on at least one side of the first buffer strip 301 along its own length direction. The second die-cutting device 40 is used to cut the second material strip 4 into the second buffer strip 401 along the width direction of the first release paper 2, and to cut the first buffer strip 301 into the third buffer strip 303 along the width direction of the first release paper 2. The third die-cutting device 60 is used to laminate the second release paper a3 to cover the first buffer strip 301 and the second buffer strip 401, and to die-cut the second release paper a3 and the first release paper 2 to form a sheet-like first semi-finished product 901. The second attaching mechanism 32 is used to adhere the first single-sided tape a4 to the second release paper layer a31 of the first semi-finished product 901, and the second release paper layer a31 is formed by die-cutting the second release paper a3. The third recycling mechanism 53 is used to peel off and recycle the first single-sided tape a4 and the second release paper layer a31 from the first semi-finished product 901 to form a second semi-finished product 902. The fourth die-cutting device 81 is used to die-cut the third release paper 7 into the third release paper layer 701. The third transfer mechanism 82 is used to transfer the third release paper layer 701 to the side of the second semi-finished product 902 provided with the second buffer strip 401. The third attaching mechanism 33 is used to attach the first protective film 8 to the first surface 703 of the third release paper 7. Along the running direction of the first release paper 2, the fourth attaching mechanism 34 is located upstream of the first die-cutting device 20.The fourth attaching mechanism 34 is used to attach the second protective film a5 to the third surface 203 of the first release paper 2, and to adhere the second single-sided tape a6 to the fourth surface 204 of the first release paper 2. The fifth attaching mechanism 35 is located upstream of the first attaching mechanism 31, and is used to attach the double-sided tape a7 to both sides of the first release paper 2 along its width direction, so as to adhere the second material tape 4.

[0177] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application 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 replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. 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 application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery buffer production equipment, characterized in that: include: An unwinding assembly, used for unwinding the first release paper, the first material tape and the second material tape; A first die-cutting device, used for die-cutting the first material tape into a first buffer strip, and transferring the first buffer strip to the first release paper, wherein the length direction of the first buffer strip is perpendicular to the running direction of the first release paper; A first attaching mechanism, used for attaching the second material strip to the first release paper, so that the second material strip is located on at least one side of the first buffer strip along its own length direction; as well as The second die-cutting device is used to cut the second material strip into second buffer strips along the width direction of the first release paper.

2. The production equipment according to claim 1, characterized in that: The unwinding assembly is also used to unwind the first supporting film and the second supporting film; The first die-cutting device comprises: a first die-cutting mechanism, used for laminating the first supporting film and the first material tape, and asynchronously die-cutting the first material tape into a first material strip along a width direction of the first material tape, wherein the width direction of the first material tape is perpendicular to a running direction of the first material tape, and the width direction of the first material strip is parallel to the running direction of the first material tape; A first transfer mechanism, used for transferring the first material strip to the second supporting film; A second die-cutting mechanism, used for die-cutting the first material strip along the running direction of the second supporting film to form the first buffer strip; The second transfer mechanism is used to transfer the first buffer strip to the first release paper.

3. The production equipment according to claim 2, characterized in that: The production equipment includes a first recovery mechanism and a second recovery mechanism, wherein the first recovery mechanism and the second recovery mechanism are used to recover the first support film and the second support film respectively.

4. The production equipment according to any one of claims 1 to 3, characterized in that: The second die-cutting device is used to cut the first buffer strip into third buffer strips along the width direction of the first release paper.

5. The production equipment according to claim 1, characterized in that: The unwinding assembly is also used for unwinding the second release paper and the first single-sided adhesive tape; The production equipment includes a third die-cutting device and a second attaching mechanism; the third die-cutting device is used to attach the second release paper to cover the first buffer strip and the second buffer strip, and die-cut the second release paper and the first release paper to form a sheet-shaped first semi-finished product; the second attaching mechanism is used to adhere the first single-sided tape to the second release paper layer of the first semi-finished product, and the second release paper layer is formed by die-cutting the second release paper; The production equipment includes a third recycling mechanism, and the third recycling mechanism is used to peel off and recycle the first single-sided tape and the second release paper layer from the first semi-finished product to form a second semi-finished product.

6. The production equipment according to claim 5, characterized in that: The third die-cutting device is used for die-cutting a first tear-off mark on the first release paper layer of the first semi-finished product, wherein the first release paper layer is formed by die-cutting the first release paper; Along the width direction of the first release paper, the first tear-off mark protrudes from one end surface of the first release paper layer.

7. The production equipment according to claim 5 or 6, characterized in that: The unwinding assembly is also used for unwinding the third release paper; The production equipment includes a fourth die-cutting device and a third transfer mechanism, the fourth die-cutting device is used to die-cut the third release paper into a third release paper layer, and the third transfer mechanism is used to transfer the third release paper layer to the side of the second semi-finished product where the second buffer strip is provided.

8. The production equipment according to claim 7, characterized in that: The fourth die-cutting device is used to die-cut a second tear-off mark on the third release paper layer, and along the width direction of the third release paper, the second tear-off mark protrudes from one end surface of the third release paper layer.

9. The production equipment according to claim 7, characterized in that: The unwinding assembly is also used for unwinding the first protective film; The production equipment includes a third attaching mechanism, which is used to attach the first protective film to the first surface of the third release paper, and the first surface is arranged opposite to the second surface of the third release paper used for attaching the first buffer strip.

10. The production equipment according to claim 1, characterized in that: The unwinding assembly is also used for unwinding the second protective film; The production equipment includes a fourth attaching mechanism, which is located upstream of the first die-cutting device along the feeding direction of the first release paper; the fourth attaching mechanism is used to attach the second protective film to the third surface of the first release paper, and the third surface is arranged opposite to the fourth surface of the first release paper for attaching the first buffer strip and the second material tape.

11. The production equipment according to claim 1, characterized in that: The unwinding assembly is also used for unwinding the second single-sided adhesive tape; The production equipment includes a fourth attaching mechanism, which is located upstream of the first die-cutting device along the tape feeding direction of the first release paper. The fourth attaching mechanism is used to adhere the second single-sided tape to the fourth surface of the first release paper, and the fourth surface is used to attach the first buffer strip and the second material tape.

12. The production equipment according to claim 1, characterized in that The unwinding assembly is also used for unwinding the double-sided adhesive tape; The production equipment includes a fifth attaching mechanism, which is located upstream of the first attaching mechanism along the feeding direction of the first release paper. The fifth attaching mechanism is used to attach the double-sided tape to both sides of the first release paper along its own width direction for bonding to the second material tape.

13. A method for producing a battery buffer using the production equipment according to any one of claims 1 to 12, characterized in that: include: Die-cutting the first material tape into a first buffer strip, and transferring the first buffer strip to the first release paper, wherein the length direction of the first buffer strip is perpendicular to the running direction of the first release paper; Attaching the second material tape to the first release paper, and making the second material tape located on one side of the first buffer strip along its length direction; as well as The second material strip is cut into second buffer strips along the width direction of the first release paper.

14. The production method according to claim 13, characterized in that: Die-cutting the first material strip into a first buffer strip, and transferring the first buffer strip to the first release paper, comprising: Laminating the first support film and the first material tape, and asynchronously die-cutting the first material tape into a first material strip along the width direction of the first material tape; the width direction of the first material tape is perpendicular to the running direction of the first material tape, and the width direction of the first material strip is parallel to the running direction of the first material tape; Transferring the first material strip to a second supporting film; Die-cutting the first material strip along the running direction of the second supporting film to form the first buffer strip; and The first buffer strip is transferred to the first release paper.

15. The production method according to claim 13 or 14, characterized in that: The production method further includes: cutting the first buffer strip into third buffer strips along a width direction of the first release paper.

16. The production method according to claim 13, characterized in that: After the second material strip is cut into second buffer strips along the width direction of the first release paper, the production method further comprises: Laminating the first buffer strip and the second buffer strip with a second release paper, and die-cutting the second release paper and the first release paper to form a sheet-shaped first semi-finished product; bonding the first single-sided adhesive tape to the second release paper layer of the first semi-finished product, wherein the second release paper layer is formed by die-cutting the second release paper; The first single-sided adhesive tape and the second release paper layer are peeled off and recovered from the first semi-finished product to form a second semi-finished product.

17. The production method according to claim 16, characterized in that: Die-cutting the second release paper and the first release paper includes: die-cutting a first tear-off mark on the first release paper layer; the first release paper layer is formed by die-cutting the first release paper, and along the width direction of the first release paper, the first tear-off mark protrudes from one of the end faces of the first release paper layer.

18. The production method according to claim 13, characterized in that: After forming the second semi-finished product, the production method further comprises: Die-cutting the third release paper into a third release paper layer; The third release paper layer is transferred to a side of the second semi-finished product where the second buffer strip is disposed.

19. The production method according to claim 18, characterized in that The third release paper is die-cut into a third release paper layer, comprising: die-cutting a second tear-off mark on the third release paper layer; along the width direction of the third release paper, the second tear-off mark protrudes from one end surface of the third release paper layer.

20. The production method according to claim 18 or 19, characterized in that: Before die-cutting the third release paper into the third release paper layer, the production method further comprises: The first protective film is attached to the first surface of the third release paper, and the first surface is arranged opposite to the second surface of the third release paper for attaching to the first buffer strip.

21. The production method according to claim 13, characterized in that: Before transferring the first buffer strip to the first release paper, the production method further includes: A second protective film is adhered to the third surface of the first release paper, and the third surface is arranged opposite to a fourth surface of the first release paper used for attaching the first buffer strip and the second material tape.

22. The production method according to claim 13, characterized in that: Before transferring the first buffer strip to the first release paper, the production method further includes: A second single-sided tape is adhered to a fourth surface of the first release paper for attaching the first buffer strip and the second material tape.

23. The production method according to claim 13, characterized in that: Before attaching the second material tape to the first release paper, the production method further comprises: Double-sided adhesive tape is attached to both sides of the first release paper along its width direction for bonding the second material tape.

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