Apparatus for manufacturing electrode assembly, solid-state battery, and apparatus for manufacturing solid-state battery

Abstract

The utility model discloses a manufacturing device of an electrode assembly, a solid-state battery and manufacturing equipment of the solid-state battery. The manufacturing device of the electrode assembly comprises a first cutting die, a second cutting die and a first negative pressure mechanism. The first cutting die comprises a first cutting plate and an annular cutter set arranged on the first cutting plate. And the annular cutter group is used for cutting the hot melt adhesive sheet into a hot melt adhesive frame. The second cutting die comprises a second cutting plate, and the second cutting plate and the first cutting plate are oppositely arranged. The first negative pressure mechanism is connected to the annular cutter set and used for adsorbing the hot melt adhesive frame. According to the manufacturing device of the electrode assembly, the deformation of the insulating rubber frame in the moving and transporting process can be reduced, and the forming quality of the electrode plate is improved, so that the yield and the operation stability of a solid-state battery are improved.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a manufacturing device for an electrode assembly, a solid-state battery and manufacturing equipment thereof. Background Art

[0002] Solid-state batteries are batteries that use solid materials as electrolytes. Solid-state batteries have high charging efficiency, high energy density, and low risk of explosion, and are of high research value.

[0003] During the production process of solid-state batteries, the hot melt adhesive frame is easily deformed, which reduces the molding quality of the electrode plates. The above problems need to be improved. Utility Model Content

[0004] In view of the above problems, the present application provides an electrode assembly manufacturing device, a solid-state battery and its manufacturing equipment, which can reduce the deformation of the rubber frame and improve the quality of the electrode piece, so as to improve the operating stability of the solid-state battery.

[0005] In a first aspect, the present application provides a manufacturing device for an electrode assembly, comprising a first cutting die, a second cutting die and a first negative pressure mechanism. The first cutting die comprises a first cutting plate and an annular cutting knife group arranged on the first cutting plate. The annular cutting knife group is used to cut a hot melt adhesive sheet into a hot melt adhesive frame. The second cutting die comprises a second cutting plate, and the second cutting plate is arranged opposite to the first cutting plate. The first negative pressure mechanism is connected to the annular cutting knife group, and the first negative pressure mechanism is used to adsorb the hot melt adhesive frame.

[0006] In the technical solution of the embodiment of the present application, a second cutting die is provided in the manufacturing device of the electrode assembly to support the hot melt adhesive sheet, and an annular cutting knife group is provided in the first cutting die to cut the hot melt adhesive sheet to obtain an annular hot melt adhesive frame. In particular, a first negative pressure mechanism is provided, which is connected to the annular cutting knife group, and the cut hot melt adhesive frame is adsorbed, and the hot melt adhesive frame is supported by the annular cutting knife group to maintain the shape of the hot melt adhesive frame, reduce the risk of deformation of the hot melt adhesive frame during movement, improve the molding quality of the electrode sheet, and thus improve the yield rate and operation stability of the solid-state battery.

[0007] In some embodiments, the annular cutting knife group includes a first cutting knife and a second cutting knife, the second cutting knife is arranged on the periphery of the first cutting knife, the first cutting knife, the second cutting knife and the first cutting plate together enclose a cutting cavity, and the first negative pressure mechanism is connected to the cutting cavity. In the above structure, by setting two annular cutting knives, and setting the second cutting knife on the periphery of the first cutting knife, a space for accommodating the hot melt adhesive frame is formed in the gap between the first cutting knife and the second cutting knife, and by setting the first negative pressure mechanism in the above mechanism, a negative pressure is formed in the cutting cavity of the first cutting die, and the hot melt adhesive frame is adsorbed, so that the hot melt adhesive frame can maintain its frame shape during the moving and transportation process, improve the structural integrity of the hot melt adhesive frame during bonding, and reduce the risk of deformation of the hot melt adhesive frame.

[0008] In some embodiments, the surface of the second cutting die facing the first cutting die is concave to form a cutting groove, and the cutting groove is arranged corresponding to the annular cutting knife group, and the cutting groove can accommodate at least part of the hot melt adhesive frame. In the above structure, the cutting groove is arranged on the surface of the second cutting die, which facilitates the annular cutting knife group to cut the hot melt adhesive sheet and improves the efficiency of the cutting process.

[0009] In some embodiments, the manufacturing device of the electrode assembly further includes an unwinding mechanism, which is used to convey the hot melt adhesive sheet along the first direction. In the above structure, by providing the unwinding device, the first cutting die and the second cutting die are automatically fed, thereby improving the efficiency of hot melt adhesive frame cutting.

[0010] In some embodiments, the unwinding mechanism includes an unwinding drum and a winding drum. The winding drum is arranged on one side of the unwinding drum along the first direction. The first cutting die and the second cutting die are arranged between the unwinding drum and the winding drum. In the above structure, the unwinding drum is arranged to automatically provide the uncut hot melt film to the first cutting die and the second cutting die, and the winding drum is arranged to collect the waste after cutting. Through the rotation of the winding drum and the appropriate tension control, the waste can be wound up in an orderly manner, which is convenient for subsequent processing and recycling.

[0011] In some embodiments, the manufacturing device of the electrode assembly also includes a moving mechanism, which is connected to the first cutting die and is used to move the first cutting die to a preset position. In the above structure, by setting a moving mechanism, the first cutting die and the hot melt adhesive frame that has been cut can be moved to the preset position at the same time to perform the next operation step. The first cutting die forms a negative pressure through the first negative pressure mechanism to adsorb the hot melt adhesive frame in the cutting cavity, thereby improving the integrity of the hot melt adhesive frame structure during movement, reducing the risk of deformation of the hot melt adhesive frame, and improving the molding yield of the electrode pole piece, thereby improving the production efficiency of the solid-state battery and the stability of the operation of the solid-state battery.

[0012] In some embodiments, the manufacturing device of the electrode assembly further includes a hot pressing mechanism, which includes a first pressing plate and a second pressing plate arranged opposite to each other, the first pressing plate is used to support the hot melt adhesive frame and the electrode pole piece, and the second pressing plate is used to heat and pressurize the hot melt adhesive frame. In the above process, by setting the first pressing plate, a stable support is provided for the electrode pole piece and the hot melt adhesive frame, and the second pressing plate performs hot pressing on the hot melt adhesive frame, thereby improving the efficiency of connecting the hot melt adhesive frame with the electrode pole piece.

[0013] In some embodiments, a waste discharge cavity is formed between the first cutting blade and the first cutting plate, and the manufacturing device of the electrode assembly further includes a second negative pressure mechanism, which is connected to the waste discharge cavity, and is used to discharge the waste after cutting. In the above structure, the second negative pressure mechanism is connected to the waste discharge cavity, and can absorb the waste in the middle of the rubber frame after cutting, and the waste can be discharged at the target position by controlling the second negative pressure mechanism.

[0014] In some embodiments, the manufacturing device of the solid-state battery further includes a control component, which includes a first controller electrically connected to the first negative pressure mechanism, and a second controller electrically connected to the second negative pressure mechanism. In the above structure, the first controller can control the adsorption force between the first cutting die and the hot melt adhesive frame, and the second controller can control the adsorption force between the first cutting die and the waste material. The above structure can automatically control the movement of the hot melt adhesive frame on the first cutting die and the discharge of the waste material, thereby improving the control efficiency and production efficiency of the solid-state battery manufacturing process.

[0015] In a second aspect, the present application provides a solid-state battery manufacturing device, which includes the manufacturing device of the electrode assembly in the above-mentioned embodiment.

[0016] In a third aspect, the present application provides a solid-state battery manufactured using a solid-state battery manufacturing device as in the above-mentioned embodiment.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0019] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0020] Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application;

[0021] Figure 3 A schematic diagram of the structure of an electrode assembly provided in some embodiments of the present application;

[0022] Figure 4 A schematic diagram of the structure of a manufacturing device for an electrode assembly provided in some embodiments of the present application;

[0023] Figure 5 A schematic diagram of the structure of a first cutting die provided in some embodiments of the present application;

[0024] Figure 6 A schematic diagram of the structure of a heat pressing mechanism provided in some embodiments of the present application.

[0025] DETAILED DESCRIPTION OF REFERENCE NUMERALS

[0026] 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor; 5. Box; 51. First box part; 52. Second box part; 53. Accommodation space; X, first direction; 7. Solid-state battery; 10. Electrode assembly; 101. Electrode pole piece; 102. Hot melt adhesive frame; 103. Waste; 104. Hot melt adhesive sheet; 6. Manufacturing device for electrode assembly; 601. First cutting die; 602. Second cutting die; 603. Cutting groove; 604. First cutting board; 605. Annular cutting knife group; 606. Second cutting board; 607. First cutting knife; 608. Second cutting knife; 609. Unwinding drum; 610. Winding drum; 611. Hot pressing mechanism; 612. First pressing plate; 613. Second pressing plate. DETAILED DESCRIPTION

[0027] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein 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 figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0029] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations 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. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may 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 article generally indicates that the associated objects before and after are in an "or" relationship.

[0032] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0033] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0034] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0035] 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.

[0036] 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.

[0037] A solid-state battery refers to a battery that uses solid substances as electrolytes. A solid-state battery generally includes a packaging shell and an electrode assembly disposed in the packaging shell. The electrode assembly includes a plurality of stacked electrode plates. The electrode plates include a current collector and a solid active material disposed on the current collector. Adjacent electrode plates are connected by an insulating rubber frame. The insulating rubber frame is arranged along the circumference of the electrode plates, and the insulating rubber frames of two adjacent electrode plates are stacked and interconnected to stack multiple electrode plates into an electrode assembly. In order to reduce the area occupied by the insulating rubber frame and improve the energy density of the solid-state battery, the thickness and width of the insulating frame are usually reduced as much as possible.

[0038] However, the rubber frame has low strength due to its small thickness and width. It is easy to deform during transportation, which reduces the efficiency and yield rate of the connection between the electrode plate and the insulating rubber frame.

[0039] Based on the above problems, the embodiment of the present application provides a manufacturing device for an electrode assembly, in which a second cutting die is provided in the manufacturing device for the electrode assembly to support the hot melt adhesive sheet, and a ring-shaped cutting knife group is provided in the first cutting die to cut the hot melt adhesive sheet to obtain a ring-shaped hot melt adhesive frame. In particular, a first negative pressure mechanism is provided, which is connected to the ring-shaped cutting knife group, and the cut hot melt adhesive frame is adsorbed, and the hot melt adhesive frame is supported by the ring-shaped cutting knife group to maintain the shape of the hot melt adhesive frame, reduce the risk of deformation of the hot melt adhesive frame during movement, improve the molding quality of the electrode sheet, and thus improve the yield rate and operation stability of the solid-state battery.

[0040] The battery device of the present application is described in detail below.

[0041] The solid-state battery mentioned in the embodiments of the present application can form a battery cell assembly (Battery Cell Assembly), and the battery device (Battery Apparatus) can include multiple battery cell assemblies (Battery Cell Assembly), and the battery device is used to provide voltage and capacity. The battery cell assembly (Battery Cell Assembly) can include multiple solid-state batteries, and the multiple solid-state batteries are connected in series, parallel or mixed through a busbar component.

[0042] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of solid-state batteries; as an example, a battery cell assembly may be a battery module, and a battery module is formed by arranging and fixing a plurality of solid-state batteries to form an independent module. As an example, a battery module may be formed by bundling a plurality of solid-state batteries by a cable tie.

[0043] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0044] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0045] As an example, the battery cell assembly may also be housed in the casing by directly fixing a plurality of solid-state batteries to the casing.

[0046] In the embodiment of the present application, the battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0047] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0048] In some embodiments, the battery device may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0049] The battery device disclosed in the embodiments of the present application can be used in various energy storage systems that use the battery device as a power source or use the battery device as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0050] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0051] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0052] like Figure 1As shown, a battery device 2 is disposed inside the vehicle 1, and the battery device 2 may be disposed at the bottom, head, or tail of the vehicle 1. The battery device 2 may be used to power the vehicle 1, for example, the battery device 2 may be used as an operating power source for the vehicle 1.

[0053] The vehicle 1 may further include a controller 3 and a motor 4 , wherein the controller 3 is used to control the battery device 2 to supply power to the motor 4 , for example, to meet the power requirements of starting, navigating and driving the vehicle 1 .

[0054] In some embodiments of the present application, the battery device 2 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0055] Figure 2 Schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application.

[0056] The box 5 is used to accommodate the battery cells, and the box 5 can be of various structures. In some embodiments, the box 5 can include a first box portion 51 and a second box portion 52, the first box portion 51 and the second box portion 52 cover each other, and the first box portion 51 and the second box portion 52 jointly define a storage space 53 for accommodating the battery cells. The second box portion 52 can be a hollow structure with one end open, the first box portion 51 is a plate-like structure, and the first box portion 51 covers the open side of the second box portion 52 to form a box 5 with a storage space 53; the first box portion 51 and the second box portion 52 can also be hollow structures with one side open, and the open side of the first box portion 51 covers the open side of the second box portion 52 to form a box 5 with a storage space 53. Of course, the first box portion 51 and the second box portion 52 can be of various shapes, such as a cylinder, a cuboid, etc.

[0057] In order to improve the sealing performance after the first box body 51 and the second box body 52 are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the first box body 51 and the second box body 52 .

[0058] Assuming that the first box body portion 51 covers the top of the second box body portion 52 , the first box body portion 51 can also be referred to as an upper box cover, and the second box body portion 52 can also be referred to as a lower box body.

[0059] In the battery device 2, there can be one or more battery cells. If there are more than one battery cell, the battery cells can be connected in series, in parallel or in a mixed connection. A mixed connection means that the battery cells are connected in series and in parallel. The battery cells can be directly connected in series, in parallel or in a mixed connection, and then the whole formed by the battery cells can be accommodated in the box 5; of course, the battery cells can also be connected in series, in parallel or in a mixed connection to form a battery module, and then the battery modules can be connected in series, in parallel or in a mixed connection to form a whole, and then accommodated in the box 5.

[0060] In some optional embodiments, the battery cells may also be directly accommodated in the box body 5 to reduce the connection components or support components required to form the battery module and improve the energy density of the battery device 2.

[0061] Exemplarily, a battery cell may be the smallest unit constituting the battery device 2. The battery cell may be a solid-state battery 7.

[0062] like Figure 3 As shown, the solid-state battery 7 generally includes: a packaging shell and an electrode assembly 10. The packaging shell has an inner cavity, and the electrode assembly is arranged in the inner cavity. The electrode assembly 10 includes a positive electrode sheet and a negative electrode sheet stacked. Among them, a solid electrolyte is provided on the electrode sheet. A hot melt adhesive frame 102 is provided on the periphery of the electrode sheet 101, and the insulating adhesive frames between two adjacent electrode sheets are connected to each other. The insulating adhesive frame insulates and provides support for the electrode sheet.

[0063] In some optional embodiments, hot melt adhesive may be used to manufacture an insulating adhesive frame to form a hot melt adhesive frame.

[0064] In some optional embodiments, the solid electrolyte includes one or more of a sulfide solid electrolyte, an oxide solid electrolyte, a halide solid electrolyte, and a polymer solid electrolyte.

[0065] Sulfide solid electrolytes include sulfide crystalline solid electrolytes, sulfide glass and glass ceramic solid electrolytes.

[0066] Please refer to Figures 4 to 6 , Figure 4 A schematic diagram of a structure of an electrode assembly manufacturing device provided in some embodiments of the present application, Figure 5 A schematic diagram of the structure of a first cutting die provided in some embodiments of the present application, Figure 6 This is a schematic diagram of the structure of the heat pressing mechanism in some embodiments of the present application.

[0067] As shown in the figure, the manufacturing device 6 of the electrode assembly provided in the embodiment of the present application includes a first cutting die 601, a second cutting die 602 and a first negative pressure mechanism (not shown in the figure). The first cutting die 601 includes a first cutting plate 604 and an annular cutting knife group 605 arranged on the first cutting plate 604. The annular cutting knife group 605 is used to cut the hot melt adhesive sheet 104 into a hot melt adhesive frame 102. The second cutting die 602 includes a second cutting plate 606, and the second cutting plate 606 is arranged opposite to the first cutting plate 604. The first negative pressure mechanism is connected to the annular cutting knife group 605, and the first negative pressure mechanism is used to adsorb the hot melt adhesive frame 102.

[0068] The first cutting plate 604 provides a space for the annular cutter group 605 to be installed. The annular cutter group 605 protrudes from the side surface of the first cutting plate 604 facing the second cutting die 602. The annular cutter group 605 can be set according to the shape of the hot melt adhesive frame 102. The annular cutter group 605 is used to cut the hot melt adhesive sheet 104 and form the hot melt adhesive frame 102, thereby improving the accuracy of the precise size and shape of the hot melt adhesive frame 102. The second cutting plate 606 is used to support the hot melt adhesive frame 102, so that the annular cutter group 605 can cut it. The annular cutter group 605 can be two annular knives, or a plurality of intersecting blades, and the annular knives and blades can be set along the edge of the hot melt adhesive frame 102.

[0069] Optionally, the first negative pressure mechanism may include a connecting tube, a control device and a vacuum pump, one end of the connecting tube is connected to the vacuum pump, and the other end is connected to the annular cutting knife group 605. After the annular cutting knife group 605 cuts the hot melt adhesive frame 102, it is adsorbed on the annular cutting knife group for easy movement.

[0070] In the technical solution of the embodiment of the present application, a second cutting die 602 is provided in the manufacturing device 6 of the electrode assembly to support the hot melt adhesive sheet 104, and an annular cutting knife group 605 is provided in the first cutting die 601 to cut the hot melt adhesive sheet 104 to obtain an annular hot melt adhesive frame 102. In particular, a first negative pressure mechanism is provided, which is connected to the annular cutting knife group 605, and the cut hot melt adhesive frame 102 is adsorbed, and the hot melt adhesive frame 102 is supported by the annular cutting knife group 605 to maintain the shape of the hot melt adhesive frame 102, reduce the risk of deformation of the hot melt adhesive frame 102 during movement, improve the molding quality of the electrode piece, and thus improve the yield rate and operation stability of the solid-state battery 7.

[0071] In some embodiments of the present application, the annular cutting knife group 605 includes a first cutting knife 607 and a second cutting knife 608, the second cutting knife 608 is arranged on the outer periphery of the first cutting knife 607, the first cutting knife 607, the second cutting knife 608 and the first cutting plate 604 together form a cutting cavity, and the first negative pressure mechanism is connected to the cutting cavity.

[0072] Exemplarily, the first cutting blade 607 is arranged along the inner edge of the hot melt adhesive frame 102, and the second cutting blade 608 is arranged along the outer edge of the hot melt adhesive frame 102. The first cutting blade 607 and the second cutting blade 608 cooperate with each other to accurately control the width and depth of the cutting, so that the size and shape of the hot melt adhesive frame 102 meet the design requirements. The formation of the cutting cavity provides a stable supporting environment for the hot melt adhesive frame 102. During the cutting process, the hot melt adhesive sheet 104 is confined in the cutting cavity, reducing the cutting error caused by material movement or vibration.

[0073] In the above structure, two annular cutting knives are provided, and the second cutting knife 608 is provided on the periphery of the first cutting knife 607, and a space for accommodating the hot melt adhesive frame 102 is formed in the gap between the first cutting knife 607 and the second cutting knife 608, and the first negative pressure mechanism is connected to the cutting chamber, and the cut hot melt adhesive frame 102 is tightly adsorbed on the annular cutting knife group by generating a negative pressure environment. This adsorption effect not only helps to maintain the shape of the hot melt adhesive frame 102 stable, but also facilitates subsequent transfer and processing. During the movement and transportation of the hot melt adhesive frame 102, negative pressure adsorption can effectively reduce its deformation caused by external force. The molding quality of the electrode plate 101 and the yield rate of the solid-state battery 7 are improved, thereby improving the operating stability of the solid-state battery 7.

[0074] In some embodiments of the present application, the surface of the second cutting die 602 facing the first cutting die 601 is concave to form a cutting groove 603, and the cutting groove 603 is arranged corresponding to the annular cutting knife group 605, and the cutting groove 603 can accommodate at least part of the hot melt adhesive frame 102.

[0075] It is understandable that, relative to the planar support plate, the cutting groove 603 can reduce the friction resistance between the cutting knife and the hot melt adhesive sheet 104 during the cutting process, thereby increasing the cutting speed. In addition, the cutting groove 603 provides a clear cutting path and positioning reference for the annular cutter group 605, making the cutting process more accurate and efficient, and reducing the cutting error caused by inaccurate positioning. The cutting groove 603 not only serves as a cutting path, but also provides additional support for the hot melt adhesive sheet 104 during the cutting process. When the annular cutter group 605 starts cutting, the hot melt adhesive sheet 104 will begin to deform and gradually enter the cutting groove 603. In this process, the side wall of the cutting groove 603 will provide a certain support to the hot melt adhesive sheet 104, which helps to keep its shape stable. Since the cutting groove 603 can accommodate at least part of the hot melt adhesive frame 102, after the cutting is completed, the bottom and side of the hot melt adhesive frame 102 will be supported to a certain extent. This support helps prevent the hot melt adhesive frame 102 from deforming during subsequent processing, especially during movement and transportation.

[0076] It is understandable that, when at least part of the hot melt adhesive frame 102 falls into the cutting groove 603 , the first negative pressure mechanism can be activated to adsorb it into the cutting cavity and move it to a preset position along with the first cutting die 601 .

[0077] In the above structure, the cutting groove 603 formed by the concave surface of the second cutting die 602 improves the cutting efficiency and enhances the stability of the cutting process, which not only optimizes the production process, but also reduces the production cost and defective product rate, providing strong support for the manufacture of high-precision products such as solid-state batteries 7.

[0078] In some embodiments of the present application, the manufacturing device 6 of the electrode assembly further includes a reeling mechanism, which is used to convey the hot melt adhesive sheet 104 along the first direction X. In the above structure, by providing the reeling device, the first cutting die 601 and the second cutting die 602 are automatically fed, thereby improving the efficiency of cutting the hot melt adhesive frame 102.

[0079] In some embodiments of the present application, the unwinding mechanism includes an unwinding drum 609 and a winding drum 610 . The winding drum 610 is disposed on one side of the unwinding drum 609 along the first direction X. The first cutting die 601 and the second cutting die 602 are disposed between the unwinding drum 609 and the winding drum 610 .

[0080] The unwinding drum 609 is responsible for storing and automatically releasing the uncut hot melt adhesive sheet 104. As the unwinding drum 609 rotates, the hot melt adhesive sheet 104 is smoothly transported between the first cutting die 601 and the second cutting die 602, providing continuous raw materials for subsequent cutting operations. The hot melt adhesive sheet 104 is accurately cut between the first cutting die 601 and the second cutting die 602. The annular cutting knife group 605 of the first cutting die 601 is responsible for cutting out the hot melt adhesive frame 102, while the cutting groove 603 of the second cutting die 602 plays a supporting and positioning role. After the cutting is completed, the waste material 103 (i.e., the excess hot melt adhesive sheet 104 that has been cut off) is transported to the winding drum 610. The winding drum 610 winds up the waste material 103 in an orderly manner through rotation and appropriate tension control. This winding method not only reduces the space occupied by the waste material 103, but also facilitates subsequent transportation, storage and processing.

[0081] During this process, the first negative pressure mechanism can absorb and stabilize the hot melt adhesive frame 102. For example, after the first cutting die 601 cuts the first hot melt adhesive frame 102, the first negative pressure mechanism can be activated and absorb the first hot melt adhesive frame 102, and the first cutting die 601 can be moved to the target position, and then the first negative pressure mechanism is closed, and the hot melt adhesive frame 102 is separated from the first cutting die 601 and placed at the target position. Then, the first cutting die 601 is moved to the unwinding mechanism to continue cutting the next hot melt adhesive frame 102, and the above process is repeated.

[0082] The above technical solution realizes the automatic supply, cutting and collection of waste 103 of hot melt adhesive sheet 104, greatly improving production efficiency and automation. The design of the winding drum 610 enables the waste 103 to be wound up in an orderly manner, reducing the difficulty and cost of handling the waste 103. At the same time, this also provides convenience for the recycling and reuse of the waste 103. Through reasonable layout and structural design, the entire production process is optimized. The collaborative work between the various components makes the entire system more compact and efficient. Stable raw material supply and precise cutting operation help to improve the molding quality of the hot melt adhesive frame 102, thereby improving the yield and operating stability of products such as solid-state batteries 7. In some embodiments of the present application, the manufacturing device 6 of the electrode assembly also includes a moving mechanism, which is connected to the first cutting die 601 and is used to move the first cutting die 601 to a preset position.

[0083] The moving mechanism is used to accurately move the first cutting die 601 and the hot melt adhesive frame 102 thereon to a preset position. This is crucial for accurate docking and assembly in subsequent processing steps, and helps reduce defective products caused by position deviation. Exemplarily, the moving mechanism may include a robotic arm, a linear slide, a synchronous belt drive device, and a cylinder or a hydraulic cylinder, which may be set according to actual needs.

[0084] In the above structure, during the movement, the first negative pressure mechanism continues to work, and the hot melt adhesive frame 102 is tightly adsorbed in the cutting cavity by forming a negative pressure. This adsorption effect not only maintains the shape stability of the hot melt adhesive frame 102, but also reduces the impact of vibration and impact caused by movement on the hot melt adhesive frame 102, thereby reducing the risk of deformation. Through the automated moving mechanism, the time for manual handling and positioning can be significantly shortened, and the operating efficiency of the entire production line can be improved. At the same time, due to the reduction of interference from human factors, the stability and reliability of the production process are also improved. Stable movement process and precise positioning help to maintain the integrity and consistency of the hot melt adhesive frame 102, thereby improving the molding yield of the electrode plate 101. This is crucial for the manufacture of high-precision products such as solid-state batteries 7, and helps to improve the overall performance and operational stability of the product.

[0085] like Figure 6 As shown, in some embodiments of the present application, the manufacturing device 6 of the electrode assembly also includes a hot pressing mechanism 611, and the hot pressing mechanism 611 includes a first pressing plate 612 and a second pressing plate 613 that are relatively arranged. The first pressing plate 612 is used to support the hot melt adhesive frame 102 and the electrode plate 101, and the second pressing plate 613 is used to heat and pressurize the hot melt adhesive frame 102.

[0086] The first pressing plate 612 is used as a supporting platform to stably place the electrode sheet 101 and the hot melt adhesive frame 102. Its surface needs to be in good contact with the electrode sheet 101 and the hot melt adhesive frame 102, and prevent sliding or offset during the hot pressing process. Through precise positioning mechanisms (such as positioning pins, clamps, etc.), the first pressing plate 612 can also ensure the accurate alignment of the electrode sheet 101 and the hot melt adhesive frame 102 before hot pressing, laying the foundation for subsequent hot pressing operations.

[0087] A heating element (such as a resistance wire, a heating tube, etc.) is embedded inside the second pressing plate 613 to quickly heat up the hot melt adhesive frame 102. When the second pressing plate 613 drops to contact the first pressing plate 612, the heating element starts to work and transfers heat to the hot melt adhesive frame 102, making it softened and fluid. At the same time, the second pressing plate 613 also applies a certain pressure to the hot melt adhesive frame 102 through a mechanical structure (such as a transmission mechanism driven by a cylinder, a hydraulic cylinder or a servo motor). This pressure helps the hot melt adhesive frame 102 to better fill the gap between the electrode plates 101 and remove air and impurities therein.

[0088] Under the action of temperature increase and pressure, the hot melt adhesive frame 102 gradually softens and penetrates into the surface and pores of the electrode plate 101. As the temperature increases and the pressure increases, a strong chemical bond and mechanical lock are formed between the hot melt adhesive frame 102 and the electrode plate 101, thereby achieving a tight connection.

[0089] After the hot pressing process is completed, the second pressing plate 613 rises and separates from the first pressing plate 612, and the electrode assembly 10 is initially formed. Subsequent processing steps such as cooling and curing can be performed to further improve the strength and stability of the connection.

[0090] In the above process, the hot pressing mechanism 611 improves the connection efficiency between the hot melt adhesive frame 102 and the electrode plate 101 by rapidly heating and pressurizing. Stable support and precise positioning ensure the accurate alignment of the electrode plate 101 and the hot melt adhesive frame 102 during the hot pressing process, thereby ensuring the reliability and consistency of the connection. The automated hot pressing mechanism 611 reduces the need for manual operation, reduces labor intensity and production costs. A strong connection helps to improve the overall performance of the electrode assembly 10, including conductivity, mechanical strength and durability. This is crucial for the manufacture of high-performance electronic products such as solid-state batteries 7.

[0091] In some embodiments of the present application, a waste discharge chamber is formed between the first cutting knife 607 and the first cutting plate 604, and the electrode assembly manufacturing device 6 also includes a second negative pressure mechanism, which is connected to the waste discharge chamber and is used to discharge the waste 103 after cutting.

[0092] When the first cutting blade 607 cuts the hot melt adhesive frame 102, a waste area will be formed inside the adhesive frame. The waste 103 may be excess adhesive, cut scraps, etc. The waste discharge chamber is located between the first cutting blade 607 and the first cutting plate 604, so that the waste 103 generated during the cutting process can be effectively collected, thereby preventing the waste 103 from being scattered or accumulated in the cutting area, affecting the subsequent cutting quality and production efficiency.

[0093] The second negative pressure mechanism is connected to the waste discharge chamber, and adsorbs the waste 103 in the waste discharge chamber by generating negative pressure (i.e., pressure lower than atmospheric pressure). This adsorption effect enables the waste 103 to be guided to a target location along a specific path, such as a waste 103 collection box or a waste 103 conveyor belt. By controlling the suction force and duration of the second negative pressure mechanism, the discharge location and discharge amount of the waste 103 can be accurately controlled. This helps to keep the production site clean and tidy and reduce the potential contamination of equipment and products by the waste 103.

[0094] In the above structure, the automated waste 103 discharge process reduces the time for manual cleaning of waste 103, allowing the cutting operation to be carried out continuously, thereby improving production efficiency. Timely discharge of waste 103 avoids its accumulation and interference in the cutting area, ensuring the accuracy and consistency of cutting. It reduces the scattering and flying of waste 103, improves the working environment at the production site, and reduces the health hazards to workers. It reduces the wear and blockage of equipment and tools by waste 103, and reduces the maintenance cost and failure rate of equipment.

[0095] In some embodiments of the present application, the manufacturing device 6 of the electrode assembly further includes a control component, which includes a first controller 3 electrically connected to the first negative pressure mechanism, and a second controller 3 electrically connected to the second negative pressure mechanism.

[0096] The first controller 3 is electrically connected to the first negative pressure mechanism, and is responsible for controlling the magnitude of the negative pressure generated by the first negative pressure mechanism, thereby adjusting the adsorption force between the first cutting die 601 and the hot melt adhesive frame 102. This adjustment capability enables the hot melt adhesive frame 102 to be stably attached to the first cutting die 601 during the cutting and moving process, reducing the risk of falling off or deformation due to insufficient adsorption force. Optionally, through precise algorithms and sensor feedback, the first controller 3 can adjust the adsorption force in real time to adapt to hot melt adhesive frames 102 of different materials, thicknesses and shapes, ensuring the smooth progress of the cutting and moving process.

[0097] The second controller 3 is electrically connected to the second negative pressure mechanism, and is responsible for controlling the adsorption force of the second negative pressure mechanism on the waste 103 in the waste discharge chamber. During the cutting process, the waste 103 is collected in the waste discharge chamber, and the second controller 3 controls the waste 103 to be discharged at a specific time and position by adjusting the negative pressure. This control mechanism not only ensures that the waste 103 can be discharged in a timely and accurate manner, but also reduces the risk of accumulation and blockage of the waste 103 in the waste discharge chamber, thereby improving the continuity and stability of the cutting process.

[0098] In the above structure, through automated control, the need for manual intervention is reduced, making the entire production process more efficient and accurate. The first controller 3 and the second controller 3 work together to achieve precise control of key links such as cutting, moving and waste 103 discharge. Automated control makes the production process smoother and reduces downtime and delays caused by human factors. At the same time, precise adsorption force control and waste 103 discharge mechanism improve the speed and accuracy of cutting and moving, thereby improving overall production efficiency. Stable adsorption force and precise waste 103 discharge mechanism ensure that the hot melt adhesive frame 102 maintains integrity and consistency during cutting and moving, reducing quality problems caused by deformation or contamination.

[0099] The embodiment of the present application also provides a manufacturing device for a solid-state battery, which includes the manufacturing device 6 of the electrode assembly in the above embodiment. A second cutting die 602 is provided in the manufacturing device 6 of the electrode assembly to support the hot-melt adhesive sheet 104, and an annular cutting knife group 605 is provided in the first cutting die 601 to cut the hot-melt adhesive sheet 104 to obtain an annular hot-melt adhesive frame 102. In particular, a first negative pressure mechanism is provided, which is connected to the annular cutting knife group 605, and the cut hot-melt adhesive frame 102 is adsorbed, and the hot-melt adhesive frame 102 is supported by the annular cutting knife group 605 to maintain the shape of the hot-melt adhesive frame 102, thereby reducing the risk of deformation of the hot-melt adhesive frame 102 during movement, improving the molding quality of the electrode sheet, and thus improving the yield rate and operation stability of the solid-state battery 7.

[0100] The embodiment of the present application provides a solid-state battery 7, which is manufactured using the manufacturing equipment of the solid-state battery in the above embodiment. The solid-state battery 7 in the present application is manufactured by the above equipment, and has the characteristics of high manufacturing efficiency and good operating stability.

[0101] 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 manufacturing device for an electrode assembly, characterized in that: include: A first cutting die, comprising a first cutting plate and an annular cutting knife group arranged on the first cutting plate, wherein the annular cutting knife group is used to cut the hot melt adhesive sheet into a hot melt adhesive frame; A second cutting die, comprising a second cutting plate, wherein the second cutting plate is arranged opposite to the first cutting plate; The first negative pressure mechanism is connected to the annular cutter assembly, and the first negative pressure mechanism is used for adsorbing the hot melt adhesive frame.

2. The manufacturing device according to claim 1, characterized in that: The annular cutting knife group includes a first cutting knife and a second cutting knife, the second cutting knife is arranged on the outer periphery of the first cutting knife, the first cutting knife, the second cutting knife and the first cutting plate together form a cutting cavity, and the first negative pressure mechanism is connected to the cutting cavity.

3. The manufacturing device according to claim 2, characterized in that: The surface of the second cutting die facing the first cutting die is concave to form a cutting groove, and the cutting groove is arranged corresponding to the annular cutting knife group, and the cutting groove can accommodate at least a part of the hot melt adhesive frame.

4. The manufacturing device according to claim 1, characterized in that: The manufacturing device further comprises an unwinding mechanism, and the unwinding mechanism is used to transport the hot melt adhesive sheet along a first direction.

5. The manufacturing device according to claim 4, characterized in that: The unwinding mechanism comprises: Unwind the reel, and a winding drum, arranged on one side of the unwinding drum along the first direction, Wherein, the first cutting die and the second cutting die are arranged between the unwinding drum and the winding drum.

6. The manufacturing device according to any one of claims 1 to 5, characterized in that: The manufacturing device of the electrode assembly further includes a moving mechanism, which is connected to the first cutting die and is used to move the first cutting die to a preset position.

7. The manufacturing device according to claim 6, characterized in that: The manufacturing device of the electrode assembly also includes a hot pressing mechanism, which includes a first pressing plate and a second pressing plate arranged opposite to each other, the first pressing plate is used to support the hot melt adhesive frame and the electrode plate, and the second pressing plate is used to heat and pressurize the hot melt adhesive frame.

8. The manufacturing device according to claim 2, characterized in that: A waste discharge cavity is formed between the first cutting blade and the first cutting plate. The manufacturing device of the electrode assembly also includes a second negative pressure mechanism, which is connected to the waste discharge cavity and is used to discharge waste after cutting.

9. The manufacturing device according to claim 8, characterized in that: The manufacturing device further includes a control component, which includes a first controller electrically connected to the first negative pressure mechanism, and a second controller electrically connected to the second negative pressure mechanism.

10. A solid-state battery manufacturing device, characterized in that: A manufacturing device comprising the electrode assembly according to any one of claims 1 to 9.

11. A solid-state battery, characterized in that: The solid-state battery is manufactured using the solid-state battery manufacturing equipment as described in claim 10.

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