Pole piece processing device based on reinforced ring cutting forming and solid-state battery production line

Abstract

This utility model discloses an electrode processing device and a solid-state battery production line based on reinforcing ring cutting and forming, belonging to the technical field of electrode production equipment. The electrode processing device based on reinforcing ring cutting and forming includes a film belt conveying assembly, a film belt cutting assembly, and a transfer and laminating assembly. The film belt conveying assembly is configured to convey a film belt; the film belt cutting assembly is configured to cut the film belt conveyed by the film belt conveying assembly to obtain a film sheet; the transfer and laminating assembly is configured to transfer and laminate the film sheet cut by the film belt cutting assembly to the edge of a first electrode sheet, so that an annular reinforcing ring is formed at the edge of the first electrode sheet. The first electrode sheet is a positive electrode sheet or a negative electrode sheet, which is beneficial to improve the strength of the edge area of ​​the positive electrode sheet or negative electrode sheet and improve the production quality of the positive electrode sheet or negative electrode sheet.

Description

Technical Field

[0001] This utility model relates to the field of electrode production equipment technology, and in particular to an electrode processing device based on reinforcing ring cutting and forming and a solid-state battery production line. Background Technology

[0002] Solid-state batteries use solid electrolytes instead of the separators and liquid electrolytes used in traditional lithium-ion batteries, thus allowing the battery to store more energy in the same volume.

[0003] In the production of solid-state batteries, our company forms a plastic frame at the edge of one of the positive and negative electrode sheets, embeds the other positive and negative electrode sheet into the plastic frame, and then performs a pressing process on the positive and negative electrode sheets, thereby improving the bonding and insulation effect of the positive and negative electrode sheets.

[0004] However, in subsequent research, our company further discovered that a gap is formed between the frame and the edge of the positive or negative electrode embedded in the frame. During the pressing process, the gap between the frame and the edge of the positive or negative electrode embedded in the frame is prone to collapse, which can lead to a short circuit between the positive and negative electrode, resulting in poor production quality. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an electrode processing device based on reinforcing ring cutting and forming, which is beneficial for improving the strength of the edge region of the positive or negative electrode sheet and improving the production quality of the positive or negative electrode sheet.

[0006] This utility model also proposes a solid-state battery production line.

[0007] An electrode processing apparatus based on reinforcing ring cutting according to an embodiment of the present invention includes: a film belt conveying assembly configured to convey a film belt; a film belt cutting assembly configured to cut the film belt conveyed by the film belt conveying assembly to obtain a film sheet; and a transfer and laminating assembly configured to transfer and laminate the film sheet cut by the film belt cutting assembly to the edge of a first electrode sheet, thereby forming an annular reinforcing ring at the edge of the first electrode sheet, wherein the first electrode sheet is a positive electrode sheet or a negative electrode sheet.

[0008] The electrode processing apparatus based on reinforcing ring cutting according to the present invention has at least the following beneficial effects: the film belt conveying assembly is used to convey the film belt, and the film belt cutting assembly can cut the film belt conveyed by the film belt conveying assembly, thereby cutting out a film sheet for lamination from the film belt. The transfer lamination assembly can transfer the film sheet cut by the film belt cutting assembly and laminate it to the edge of the first electrode sheet, so that an annular reinforcing ring is formed at the edge of the first electrode sheet. The setting of the reinforcing ring can be used to improve the strength of the first electrode sheet in the edge region. The first electrode sheet is a positive electrode sheet or a negative electrode sheet. A plastic frame is formed at the positive electrode sheet or the negative electrode sheet. When the positive electrode sheet and the negative electrode sheet are laminated and pressed, the setting of the reinforcing ring can be used to improve the strength of the cell inside the plastic frame, reduce the risk of the cell collapsing at the gap inside the plastic frame and causing a short circuit, thereby improving the production quality and safety of the cell of the first electrode sheet manufactured using the electrode processing apparatus based on reinforcing ring cutting.

[0009] According to some embodiments of the present invention, the film belt includes a substrate, an adhesive layer, and an isolation layer stacked sequentially. The film belt conveying assembly includes a first unwinding roller, a first winding roller, and a second winding roller. The first unwinding roller is used to unwind the film belt. The two ends of the isolation layer are respectively connected to the first unwinding roller and the first winding roller. The first winding roller is used to peel the isolation layer off the adhesive layer. The two ends of the substrate are respectively connected to the first unwinding roller and the second winding roller. The second winding roller is used to wind up the substrate. The transfer bonding assembly is used to bond the adhesive layer of the film to the first electrode sheet.

[0010] And / or, the electrode processing apparatus based on reinforcing ring cutting also includes a flipping assembly configured to flip the first electrode, and a transfer laminating assembly capable of laminating films onto the two end faces of the first electrode respectively.

[0011] According to some embodiments of the present invention, the electrode processing device based on reinforcing ring cutting and forming has a material picking station, and the film strip cutting component is a laser cutter, which is mounted on the conveying path of the film strip; at the material picking station, the transfer bonding component is opposite to the laser cutter to obtain the film cut by the laser cutter from the film strip.

[0012] According to some embodiments of the present invention, the transfer bonding assembly includes an adsorption head and a transformer. The transformer is connected to the adsorption head to generate a negative pressure in the adsorption head, which is used to adsorb the membrane.

[0013] According to some embodiments of the present invention, the electrode processing device based on the reinforcing ring cutting and forming also has a lamination station, and the transfer lamination assembly further includes a transfer member, which is configured to drive the adsorption head to move along multiple axes, so that the adsorption head moves between the material picking station and the lamination station, and the transfer lamination assembly laminations the film onto the first electrode at the lamination station.

[0014] According to some embodiments of this utility model, the reinforcing ring is configured as a closed loop or an open loop.

[0015] According to some embodiments of this utility model, the diaphragm is arranged in a ring shape;

[0016] Alternatively, the transfer bonding assembly can bond multiple films to the same end face of the first electrode, so that the multiple films face each other end to end to form a reinforcing ring.

[0017] A solid-state battery production line according to a second aspect of the present invention includes an electrode processing apparatus based on reinforcing ring cutting and forming as shown in any one of the first aspects.

[0018] The solid-state battery production line according to the embodiments of the present invention has at least the following beneficial effects: The solid-state battery production line includes an electrode processing device based on reinforcing ring cutting as shown in any of the first aspects. A film conveying assembly is used to convey film tape, and a film tape cutting assembly can cut the film tape conveyed by the film tape conveying assembly to cut out films for lamination from the film tape. A transfer lamination assembly can transfer and laminate the films cut by the film tape cutting assembly to the edge of the first electrode, so that an annular reinforcing ring is formed at the edge of the first electrode. The reinforcing ring can be used to improve the strength of the first electrode in the edge region. The first electrode is a positive electrode or a negative electrode. A frame is formed at the positive electrode or negative electrode. When the positive electrode and the negative electrode are laminated and pressed, the reinforcing ring can be used to improve the strength of the cell inside the frame and reduce the risk of short circuit caused by the cell collapsing at the gap inside the frame. This improves the production quality and safety of the cells with the first electrode manufactured using the electrode processing device based on reinforcing ring cutting.

[0019] According to some embodiments of the present invention, the solid-state battery production line further includes a first conveying device for conveying a first electrode sheet, a forming device for forming a frame on the first electrode sheet or a second electrode sheet, and a laminating device for laminating the first electrode sheet and the second electrode sheet. The electrode processing device based on the reinforcing ring cutting and forming can laminate the film onto the first electrode sheet conveyed by the first conveying device. The first electrode sheet is one of a positive electrode sheet and a negative electrode sheet, and the second electrode sheet is the other of a positive electrode sheet and a negative electrode sheet. The laminating device can embed the first electrode sheet or the second electrode sheet in the frame to form a cell. The reinforcing ring is at least partially disposed on the inner side of the frame.

[0020] According to some embodiments of the present invention, the molding device includes a printing plate, a scraper, a first driving assembly and an adhesive supply assembly. The printing plate has a frame-shaped perforation. The adhesive supply assembly is used to transport adhesive to the surface of the printing plate. The first driving assembly is connected to the scraper for driving the scraper to move back and forth along the surface of the printing plate, so that an adhesive frame matching the frame-shaped perforation is formed on the first electrode or the second electrode.

[0021] And / or, the solid-state battery production line also includes a curing device and a second conveying device for conveying the second electrode sheet. The molding device and the curing device are sequentially arranged in the conveying direction of the first conveying device or the second conveying device. The curing device is used to accelerate the curing of the adhesive frame located on the first electrode sheet or the second electrode sheet.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of a solid-state battery production line (forming a reinforcing ring and a plastic frame on the first electrode sheet) according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the film strip cutting assembly and the transfer bonding assembly of the electrode processing device based on reinforcing ring cutting and forming according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of a solid-state battery production line for forming a battery cell from the first electrode and the second electrode, according to an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the structure of a solid-state battery production line (forming a glue frame after stacking the first electrode and the second electrode) according to another embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of a solid-state battery production line for forming a battery cell from the first electrode and the second electrode, according to another embodiment of the present invention.

[0029] Icon labels:

[0030] 100. Membrane belt conveyor assembly; 110. First unwind roller; 120. First take-up roller;

[0031] 200. Membrane tape cutting assembly;

[0032] 300. Transfer lamination assembly; 310. Adsorption head; 320. Transfer component; 330. Lamination station; 331. First bonding station; 332. Second bonding station;

[0033] 400. Molding device; 410. Molding station;

[0034] 500. First conveying device; 510. First conveying station;

[0035] 610. Inspection component; 611. Inspection station; 620. Rejection component; 621. Rejection station; 630. Flipping component; 631. Flipping station;

[0036] 700. Second conveying device; 710. Second conveying station;

[0037] 800. Lamination unit; 810. Stacking station;

[0038] 910, First electrode; 920, Second electrode; 930, Solid electrolyte layer; 940, Frame; 950, Gap; 960, Reinforcing ring. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0042] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0043] Reference Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the electrode processing device based on reinforcing ring cutting and forming according to this utility model includes a film conveying assembly 100, a film cutting assembly 200, and a transfer and bonding assembly 300.

[0044] Reference Figure 1 , Figure 2 and Figure 3As shown, the film belt conveying assembly 100 is configured to convey the film belt so that the film belt is conveyed along a preset direction. The film belt cutting assembly 200 is mounted on the conveying path of the film belt to cut the film belt conveyed by the film belt conveying assembly 100, thereby cutting out a film sheet for lamination from the continuously conveyed film belt, that is, the film sheet and the film belt are made of the same material.

[0045] Reference Figure 1 , Figure 2 and Figure 3 As shown, the electrode processing device based on reinforcing ring cutting has a material picking station and a lamination station 330. The transfer lamination assembly 300 can move between the material picking station and the lamination station 330. At the material picking station, the transfer lamination assembly 300 is opposite to the film strip cutting assembly 200, and both the transfer lamination assembly 300 and the film strip cutting assembly 200 are arranged opposite to the film strip. The transfer lamination assembly 300 can pick up the film sheet cut by the film strip cutting assembly 200, and then the transfer lamination assembly 300 can transfer it to the lamination station 330, and lamination the film sheet onto the first electrode 910 at the lamination station 330, so that the film sheet and the first electrode 910 are laminated together. An annular reinforcing ring 960 composed of the film sheet is formed at the edge of the first electrode 910, that is, the reinforcing ring 960 is arranged corresponding to the edge area of ​​the first electrode 910.

[0046] Reference Figure 1 , Figure 2 and Figure 3 As shown, specifically, the first electrode 910 is either a positive or negative electrode. It is combined with a frame 940 formed at the positive or negative electrode to form a battery cell after the positive and negative electrodes are laminated. When the battery cell is pressed, the reinforcing ring 960 can be used to improve the strength of the battery cell inside the frame 940, reduce the risk of short circuit caused by the battery cell collapsing at the gap 950 inside the frame 940, and thus improve the production quality and safety of the battery cell manufactured using the electrode processing device based on the reinforcing ring cutting and forming.

[0047] Reference Figure 1 , Figure 2 and Figure 3As shown, specifically, the first electrode 910 can be a negative electrode. A solid electrolyte layer 930 is formed on both end faces of the negative electrode. The electrode processing apparatus based on reinforcing ring cutting can laminate a film onto the end face of the negative electrode, that is, laminate a film onto the solid electrolyte layer 930, so that a reinforcing ring 960 is formed at the edge of the end face of the negative electrode. A plastic frame 940 can also be formed at the edge of the negative electrode, and the plastic frame 940 is at least partially formed on the reinforcing ring 960. The inner edge of the reinforcing ring 960 is located inside the plastic frame 940. During the electrode assembly process, the positive electrode sheet can be embedded in the frame 940 located at the negative electrode sheet. The reinforcing ring 960 covers the gap 950 between the inner side of the frame 940 and the edge of the positive electrode sheet. When the cell is pressed together, the reinforcing ring 960 can be used to improve the strength of the cell inside the frame 940, reduce the risk of the cell collapsing at the gap 950 inside the frame 940 and causing a short circuit, thereby improving the production quality and safety of the cell using the electrode assembly 910 manufactured with the reinforcing ring cutting and forming device.

[0048] Reference Figure 1 , Figure 2 and Figure 3 As shown, it can be understood that the film belt includes a substrate, an adhesive layer, and a release layer stacked sequentially, i.e., the adhesive layer is sandwiched between the substrate and the release layer, and the release layer is used to prevent the adhesive layer from contacting other objects. The film belt can initially be in a roll shape, and the film belt conveying assembly 100 can convey the film belt by unwinding and rewinding it.

[0049] Reference Figure 1 , Figure 2 and Figure 3 As shown, specifically, the film conveyor assembly 100 includes a first unwinding roller 110, a first winding roller 120, and a second winding roller. The film belt is initially connected to the first unwinding roller 110. Both ends of the separator layer are connected to the first unwinding roller 110 and the first winding roller 120, respectively. By driving the first unwinding roller 110 and the first winding roller 120 to rotate synchronously, the first winding roller 120 can wind up the separator film, i.e., peel the separator layer from the adhesive layer, thus exposing the adhesive layer of the film belt. Both ends of the substrate are connected to the first unwinding roller 110 and the first winding roller 120, respectively. By driving the first unwinding roller 110 and the second winding roller to rotate synchronously, the second winding roller can be used to wind up the substrate and adhesive layer after they have separated from the separator layer, thereby achieving the conveying of the substrate and adhesive layer.

[0050] Reference Figure 1 , Figure 2 and Figure 3As shown, the membrane tape cutting assembly 200 can cut the substrate and adhesive layer after they are separated from the separator to obtain a membrane sheet, while the transfer bonding assembly 300 can grasp one end of the substrate of the membrane sheet and bond the adhesive layer of the membrane sheet to the first electrode 910. Through the adhesiveness of the adhesive layer, the bonding of the adhesive layer and the first electrode 910 is achieved, that is, the bonding of the adhesive layer and the first electrode 910 is achieved.

[0051] Reference Figure 1 , Figure 2 and Figure 3 As shown, specifically, the membrane strip can be a PI film (polyimide film). The PI film has high tensile strength, elastic modulus and tear resistance. By laminating the membrane with the first electrode 910, the tensile and bending resistance of the edge area of ​​the first electrode 910 can be significantly improved, thereby reducing the risk of short circuit caused by the collapse of the battery cell composed of the first electrode 910 at the gap 950 inside the frame 940. This improves the production quality and safety of the battery cell using the electrode processing device based on the reinforcing ring cutting and forming.

[0052] It should be understood that in some other embodiments, the transfer bonding assembly 300 may bond the diaphragm to the edge of the end face of the first electrode 910 by means of pressure and heat.

[0053] Reference Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the film strip cutting assembly 200 is a laser cutter. The laser cutter is mounted on the film strip's transport path. After the release layer is peeled off, the adhesive layer and the substrate are transported vertically. The laser cutter is mounted above the adhesive layer and spaced apart from it. This electrode processing device based on reinforcing ring cutting can complete the cutting of the film strip without contacting the adhesive layer through laser cutting, which helps to avoid the problem of inconvenient cutting due to the adhesive layer's stickiness.

[0054] Reference Figure 1 , Figure 2 and Figure 3 As shown, specifically, the laser cutter can be mounted above the conveyed film belt. Correspondingly, at the material handling station, the transfer and laminating assembly 300 is located below the conveyed film belt. That is, the laser cutter, film belt, and transfer and laminating assembly 300 are arranged vertically in sequence, and both the laser cutter and the transfer and laminating assembly 300 are positioned opposite to the conveyed film belt. Under the cutting action of the laser cutter, film sheets can be cut from the conveyed film belt, and the cut film sheets fall onto the transfer and laminating assembly 300. Through the gripping and transfer of the film belt by the transfer and laminating assembly 300, the cut film sheets can be transferred to the laminating station 330 to achieve the lamination of the film sheets onto the first electrode 910.

[0055] Reference Figure 1 , Figure 2 and Figure 3 As shown, it can be understood that the transfer bonding assembly 300 includes an adsorption head 310, a transformer, and a rotary drive assembly. The rotary drive assembly can drive the adsorption head 310 to rotate up and down. The transformer is connected to the adsorption head 310. Through the transformer's voltage transformation, the adsorption head 310 can generate a negative pressure. The adsorption head 310 is used to adsorb the membrane.

[0056] Reference Figure 1 , Figure 2 and Figure 3 As shown, when the transfer and laminating assembly 300 moves to the material handling station, the rotary drive assembly can drive the adsorption head 310 to flip upward, so that the adsorption head 310 is facing upward and opposite to the conveyed film belt. The film belt cutting assembly 200 can achieve non-contact cutting of the conveyed film belt by laser cutting and controlling the working distance. After the transformer operates, the adsorption head 310 generates a downward attraction force, thereby adsorbing the film sheet cut from the film belt, so that the film sheet is tightly attached to the adsorption head 310. Then, the rotary drive assembly can drive the adsorption head 310 to flip downward, so that the adsorption head 310 drives the film sheet to flip downward, so that the adhesive layer of the film sheet is set downward. The transfer and laminating assembly 300 can move to the laminating station 330 to laminate the adhesive layer of the film sheet to the end face of the first electrode 910, so that an annular reinforcing ring 960 is formed at the edge of the end face of the first electrode 910.

[0057] Reference Figure 1 , Figure 2 and Figure 3 As shown, it should be noted that the rotary drive assembly can be a rotary motor, and the output shaft of the rotary motor is connected to the adsorption head 310 to drive the adsorption head 310 to rotate up and down.

[0058] Reference Figure 1 , Figure 2 and Figure 3 As shown, it can be understood that the transfer lamination assembly 300 also includes a transfer member 320, which is configured to drive the adsorption head 310 to move along multiple axes. Specifically, the transfer member 320 can be used to drive the adsorption head 310 to move along the X-axis, Y-axis and Z-axis to drive the adsorption head 310 to move between the material picking station and the lamination station 330.

[0059] Reference Figure 1 , Figure 2 and Figure 3As shown, after the transfer member 320 drives the adsorption head 310 to the material handling station, the rotary drive assembly can drive the adsorption head 310 to flip upwards. The transfer member 320 can also drive the adsorption head 310 to move upwards and closer to the membrane belt. Combined with the transformer's voltage transformation and the membrane belt cutting assembly 200's cutting action, the adsorption head 310 can be directly facing the membrane sheet cut from the membrane belt. Through downward adsorption force, the membrane sheet is adsorbed onto the adsorption head 310. Then, the transfer member 320 can drive the adsorption head 310 downwards, providing space for the rotation of the adsorption head 310. The rotary drive assembly can then drive the adsorption head 310 to rotate, causing the adsorption head 310 to flip the membrane sheet downwards, so that the adhesive layer is positioned downwards. Then, the transfer member 320 can drive the adsorption head 310 to move to the lamination station 330. The transfer member 320 can drive the adsorption head 310 to press down on the first electrode 910 located at the lamination station 330, so that the adhesive layer of the membrane located on the adsorption head 310 abuts against the end face of the first electrode 910. Through the adhesiveness of the adhesive layer, the lamination of the adhesive layer and the first electrode 910 is achieved.

[0060] Reference Figure 1 , Figure 2 and Figure 3 As shown, it should be noted that the transfer component 320 is a multi-axis drive assembly. Through multiple linear drive modules such as linear modules, screw modules, or rack and pinion modules, the adsorption head 310 can be driven to move along multiple axes. Its structure is a conventional technical means in this field and will not be described in detail here.

[0061] Reference Figure 1 , Figure 2 and Figure 3 As shown, it is understood that the electrode processing device based on the reinforcing ring cutting and forming also includes a flipping assembly 630. The flipping assembly 630 has a flipping station 631. The flipping assembly 630 is configured to flip the first electrode 910 located at the flipping station 631, so that the first electrode 910 is rotated 180 degrees. The transfer and laminating assembly 300 can laminate a film on the first electrode 910 before flipping and on the first electrode 910 after flipping, so as to achieve lamination of films on the two end faces of the first electrode 910 respectively, so that the two end faces of the first electrode 910 are respectively formed with reinforcing rings 960 to meet the requirement of stacking multiple first electrodes 910 in the cell structure.

[0062] Reference Figure 1 , Figure 2 and Figure 3As shown, specifically, the lamination station 330 includes a first lamination station 331 and a second lamination station 332. The first electrode sheet 910 before flipping and the first electrode sheet 910 after flipping can be conveyed to the first lamination station 331 and the second lamination station 332 respectively. The transfer lamination assembly 300 can laminate films onto the first electrode sheet 910 located at the first lamination station 331 and the second lamination station 332 respectively, so that the two end faces of the first electrode sheet 910 are respectively formed with reinforcing rings 960.

[0063] Reference Figure 1 , Figure 2 and Figure 3 As shown, specifically, the flipping assembly 630 includes a flipping drive component and a fixture. The fixture allows for a detachable connection to the first electrode 910. The flipping drive component can drive the fixture to rotate 180 degrees to flip the first electrode 910. The flipping drive component can be a rotary motor or a rotary robotic arm. The fixture can be designed according to the specifications and shape of the first electrode 910, which will not be elaborated here.

[0064] Reference Figure 1 , Figure 2 and Figure 3 As shown, it can be understood that the reinforcing ring 960 is arranged in a closed loop, and the diaphragm can be arranged in a complete ring. The membrane strip cutting assembly 200 cuts a complete ring on the conveyed membrane strip to obtain the diaphragm. The transfer laminating assembly 300 can laminate the complete ring-shaped diaphragm onto the end face of the first electrode 910, so that the end face of the first electrode 910 forms a reinforcing ring 960. The arrangement of the reinforcing ring 960 can be used to improve the strength of the cell inside the frame 940, reduce the risk of short circuit caused by the cell collapsing at the gap 950 inside the frame 940, thereby improving the production quality and safety of the cell manufactured using the electrode processing device based on reinforcing ring cutting.

[0065] It should be understood that in some other embodiments, the transfer bonding assembly 300 can bond multiple diaphragms to the same end face of the first electrode 910, so that the multiple diaphragms are end to end facing each other to jointly form a reinforcing ring 960. Specifically, the diaphragms are arranged in strips, and the electrode processing device based on reinforcing ring cutting can bond four diaphragms to the end face of the first electrode 910 in a head-to-end splicing manner, so that the four end-to-end connected diaphragms together form a ring-shaped reinforcing ring 960, and the reinforcing ring 960 is arranged in a closed loop.

[0066] It should be understood that in some other embodiments, the reinforcing ring 960 is arranged in an open-loop configuration. The transfer bonding assembly 300 can bond multiple films to the same end face of the first electrode 910, so that the multiple films are end to end, but at least two adjacent films are spaced apart to form the open-loop reinforcing ring 960. The open-loop configuration of the reinforcing ring 960 allows for lower film bonding accuracy but can improve the efficiency of film bonding on the first electrode 910.

[0067] Reference Figure 1 , Figure 2 and Figure 3 As shown in the figure, the present invention provides a solid-state battery production line, including an electrode processing device based on reinforcing ring cutting and forming as shown in any of the above embodiments. The film conveyor assembly 100 is used to convey the film conveyor assembly 200, which can cut the film conveyor assembly 100 to cut out film sheets for lamination. The transfer lamination assembly 300 can transfer and laminate the film sheets cut by the film conveyor assembly 200 to the edge of the first electrode 910, so that an annular reinforcing ring 960 is formed at the edge of the first electrode 910. The reinforcing ring 960 can be used to improve the strength of the first electrode 910 in the edge area. The first electrode 910 is a positive electrode or a negative electrode. A frame 940 is formed at the positive electrode or negative electrode. When the positive electrode and the negative electrode are laminated and pressed together, the reinforcing ring 960 can be used to improve the strength of the cell inside the frame 940, reduce the risk of the cell collapsing at the gap 950 inside the frame 940 and causing a short circuit, thereby improving the production quality and safety of the cell manufactured using the electrode processing device based on the reinforcing ring cutting and forming.

[0068] Reference Figure 1 , Figure 2 and Figure 3As shown, it can be understood that the solid-state battery production line also includes a first conveying device 500 for conveying the first electrode 910, a forming device 400 for forming a frame 940 on the first electrode 910, and a laminating device 800 for stacking the first electrode 910 and the second electrode 920. The electrode processing device based on the reinforcing ring cutting and forming can laminate the film onto the first electrode 910 conveyed by the first conveying device 500. The first electrode 910 is a negative electrode and the second electrode 920 is a positive electrode. The laminating device 800 can sequentially stack the first electrode 910, the solid electrolyte layer 930, and the second electrode 920, such that the first electrode 910 or the second electrode 920 is embedded in the frame 940 to form a cell. The reinforcing ring 960 is at least partially disposed on the inner side of the frame 940. The first conveying device 500 can convey the first electrode 910 to the flipping assembly 630, and transfer the first electrode 910 between the flipping assembly 630 and the transfer bonding assembly 300, and transfer it from the flipping assembly 630 to the forming device 400.

[0069] The molding apparatus 400 is provided with a molding station 410, to which the first electrode 910 is conveyed. The molding apparatus 400 can form a plastic frame 940 on the first electrode 910 located at the molding station 410. The laminating apparatus 800 has a stacking station 810, at which the laminating apparatus 800 can stack the first electrode 910, the solid electrolyte layer 930, and the second electrode 920 to form a battery cell.

[0070] Reference Figure 1 , Figure 2 and Figure 3 As shown, the electrode processing apparatus based on the reinforcing ring cutting and forming can form a reinforcing ring 960 on the first electrode 910. The forming apparatus 400 is used to directly form a plastic frame 940 at the reinforcing ring 960 on the first electrode 910, so that the plastic frame 940 is at least partially formed on the reinforcing ring 960, and the inner edge of the reinforcing ring 960 protrudes from the inner side of the plastic frame 940. The laminating apparatus 800 can realize the stacking of the first electrode 910 and the second electrode 920, so that the second electrode 920 is embedded in the plastic frame on the first electrode 910. At position 940, the reinforcing ring 960 covers the gap 950 between the inner side of the frame 940 and the second electrode 920, thus providing support and reinforcement. During cell pressing, the reinforcing ring 960 increases the cell's strength inside the frame 940, reducing the risk of short circuits caused by the cell collapsing at the gap 950 inside the frame 940. This improves the production quality and safety of the first electrode 910 manufactured using this reinforcing ring-based electrode processing device. The first electrode 910 can be a negative electrode, and the second electrode 920 can be a positive electrode.

[0071] It should be noted that the frame 940 can be made of silicone, PI film or other adhesive materials. The frame 940 can improve the bonding and insulation effect between the first electrode 910 and the second electrode 920.

[0072] It should be understood that, in some other embodiments, the electrode processing apparatus based on the reinforcing ring cutting and forming can form the reinforcing ring 960 on the first electrode 910. The forming apparatus 400 is used to directly form the frame 940 at the reinforcing ring 960 on the first electrode 910, such that the frame 940 is at least partially formed on the reinforcing ring 960, and the inner edge of the reinforcing ring 960 protrudes from the inner side of the frame 940. The laminating apparatus 800 can realize the stacking of the first electrode 910 and the second electrode 920, so that the second electrode 920 is embedded in the first electrode. At the frame 940 on electrode 910, the reinforcing ring 960 covers the gap 950 between the inner side of the frame 940 and the second electrode 920, thus providing support and reinforcement. During cell pressing, the reinforcing ring 960 increases the cell's strength inside the frame 940, reducing the risk of short circuits caused by cell collapse at the gap 950. This improves the production quality and safety of the first electrode 910 manufactured using this reinforcing ring-based electrode processing device. The first electrode 910 can be a positive electrode, and the second electrode 920 can be a negative electrode.

[0073] It should be understood that in some other embodiments, after the electrode processing apparatus based on reinforcing ring cutting and forming laminates the diaphragm onto the positive electrode, a reinforcing ring 960 is formed at the edge of the end face of the positive electrode. The outer edge of the reinforcing ring 960 protrudes from the outer edge of the positive electrode. The forming apparatus 400 can form a frame 940 at the end face of the negative electrode. During the lamination process, the positive electrode can be embedded in the frame 940 located at the negative electrode. Under the pressure of the frame 940, the portion of the reinforcing ring 960 protruding from the positive electrode can be squeezed into the gap 950 between the positive electrode and the frame 940, thereby playing a supporting and reinforcing role. When the cell is pressed, the setting of the reinforcing ring 960 can be used to improve the strength of the cell inside the frame 940, reduce the risk of the cell collapsing inside the frame 940 and causing a short circuit, thereby improving the production quality and safety of the cell of the first electrode 910 manufactured using the electrode processing apparatus based on reinforcing ring cutting and forming.

[0074] It should be understood that in some other embodiments, the first electrode 910 is a negative electrode and the second electrode 920 is a positive electrode. That is, after the electrode processing apparatus based on reinforcing ring cutting and forming laminates the film onto the negative electrode, a reinforcing ring 960 is formed at the edge of the end face of the negative electrode. The outer edge of the reinforcing ring 960 protrudes from the outer edge of the negative electrode. The forming apparatus 400 is used to form a frame 940 at the end face of the positive electrode. During the stacking process, the negative electrode can be embedded in the frame 940 located at the positive electrode. The compression of the reinforcing ring 960 allows the portion of the reinforcing ring 960 protruding from the negative electrode to be squeezed into the gap 950 between the negative electrode and the frame 940, thereby providing support and reinforcement. When the cell is pressed together, the reinforcing ring 960 can be used to increase the strength of the cell inside the frame 940, reducing the risk of the cell collapsing at the gap 950 inside the frame 940 and causing a short circuit. This improves the production quality and safety of the cell using the electrode processing device based on the reinforcing ring cutting and forming.

[0075] Reference Figure 4 and Figure 5 As shown, it should be understood that in some other embodiments, the electrode processing apparatus based on the reinforcing ring cutting and forming lamination applies a diaphragm to the first electrode 910, so that a reinforcing ring 960 is formed at the edge of the end face of the first electrode 910, and the outer edge of the reinforcing ring 960 protrudes from the outer edge of the first electrode 910. The lamination apparatus 800 can realize the stacking of the first electrode 910 and the second electrode 920, where the area of ​​the second electrode 920 is larger than the area of ​​the first electrode 910. Then, the forming apparatus 400 can extend the reinforcing ring 960 beyond the outer edge of the first electrode 910. A frame 940 is directly formed in the area of ​​electrode 910, allowing the reinforcing ring 960 to cover the gap 950 between the inner side of the frame 940 and the first electrode 910, thus providing support and reinforcement. During cell pressing, the reinforcing ring 960 enhances the cell's strength within the frame 940, reducing the risk of short circuits caused by cell collapse within the frame 940. This improves the production quality and safety of cells manufactured using this reinforcing ring-based electrode processing apparatus. The first electrode 910 is the positive electrode, and the second electrode 920 is the negative electrode.

[0076] It should be understood that in some other embodiments, the electrode processing apparatus based on the reinforcing ring cutting and forming lamination applies a diaphragm to the first electrode 910, such that a reinforcing ring 960 is formed at the edge of the end face of the first electrode 910, and the outer edge of the reinforcing ring 960 protrudes from the outer edge of the first electrode 910. The lamination apparatus 800 can stack the first electrode 910 and the second electrode 920, where the area of ​​the second electrode 920 is larger than the area of ​​the first electrode 910. Then, the forming apparatus 400 can make the reinforcing ring 960 protrude from the first electrode. A frame 940 is directly formed in area 910, allowing the reinforcing ring 960 to cover the gap 950 between the inner side of the frame 940 and the first electrode 910, thus providing support and reinforcement. During cell pressing, the reinforcing ring 960 enhances the cell's strength within the frame 940, reducing the risk of short circuits caused by cell collapse. This improves the production quality and safety of cells using this reinforcing ring-based electrode processing device. The first electrode 910 is the negative electrode, and the second electrode 920 is the positive electrode.

[0077] Reference Figure 1 , Figure 2 and Figure 3 As shown, it can be understood that in this embodiment, the molding apparatus 400 includes a printing plate, a scraper, a first driving assembly, and an adhesive supply assembly. The printing plate has frame-shaped perforations. The adhesive supply assembly is used to deliver adhesive to the surface of the printing plate. The first driving assembly is connected to the scraper for driving the scraper to reciprocate along the surface of the printing plate, so that an adhesive frame 940 matching the frame-shaped perforations is formed on the first electrode 910 or the second electrode 920.

[0078] Reference Figure 1 , Figure 2 and Figure 3 As shown, the molding device 400 is mounted on the conveying path of the first electrode 910. The first conveying device 500 is provided with a first conveying station 510. After the first electrode 910 is fed to the first conveying station 510, the first conveying device 500 can be used to convey the first electrode 910 so that multiple first electrode 910s pass through the molding station 410 of the molding device 400 in sequence. The molding device 400 includes a printing plate, a scraper, a first driving assembly, and an adhesive supply assembly.

[0079] The printing plate has frame-shaped perforations. The adhesive supply assembly is used to deliver adhesive to the upper surface of the printing plate. The first drive assembly is connected to the scraper drive to drive the scraper to move back and forth along the surface of the printing plate to achieve uniform coating of adhesive. The adhesive can pass through the printing plate and be coated downwards at the frame-shaped perforations, thereby applying adhesive to the first electrode 910 located at the molding station 410 of the molding device 400, so that an adhesive frame 940 corresponding to the frame-shaped perforations is formed on the first electrode 910. In the production process of solid-state batteries, the first electrode 910 needs to be stacked sequentially with the solid electrolyte layer 930 and the second electrode 920. One of the first electrode 910 and the second electrode 920 is a positive electrode and the other is a negative electrode. The adhesive frame 940 formed on the first electrode 910 can fit with the solid electrolyte layer 930 and the second electrode 920, which helps to limit the lateral displacement of the solid electrolyte layer 930 relative to the first electrode 910 or the second electrode 920, thereby improving the bonding effect between the solid electrolyte layer 930 and the positive and negative electrodes.

[0080] It should be noted that the first drive component can be a linear drive module such as a linear module or a screw module, and the adhesive supply component includes a liquid pump and a container. The container is used to store the adhesive, and the liquid pump is used to supply the adhesive in the container to the printing plate.

[0081] Reference Figure 1 , Figure 2 and Figure 3 As shown, it is understandable that, considering that the curing speed of the adhesive will affect the production efficiency of the electrode, the solid-state battery production line also includes a curing device. The forming device 400 and the curing device are arranged sequentially along the conveying direction of the first conveying device 500. The first conveying device 500 can convey the first electrode 910 from the forming device 400 to the curing device. The curing device is used to accelerate the curing of the adhesive frame 940, that is, to shorten the curing time of the adhesive frame 940 and reduce the waiting time for the curing of the adhesive frame 940, which is beneficial to improving the production efficiency of the electrode of the solid-state battery.

[0082] Reference Figure 1 , Figure 2 and Figure 3 As shown, specifically, the curing device includes a heater, which provides heat to the first electrode 910 on the first conveying device 500. That is, the curing device increases the curing speed of the adhesive frame 940 on the first electrode 910 by heating and drying, which helps to reduce the waiting time for the adhesive frame 940 to cure and improve the electrode production efficiency of solid-state batteries.

[0083] It should be understood that in some other embodiments, the curing device also includes a fan, with the fan outlet facing the first conveying device 500. The operation of the fan helps to accelerate the air flow speed at the first conveying device 500, thereby accelerating the curing speed of the adhesive frame 940 of the first electrode 910 located on the first conveying device 500, reducing the waiting time for the adhesive frame 940 to cure, and improving the electrode production efficiency of solid-state batteries.

[0084] It should be understood that, in some other embodiments, for photosensitive adhesives, the curing device may include a specific light source, which, when irradiated by the specific light source, accelerates the curing of the adhesive and helps to reduce the curing time of the adhesive frame 940.

[0085] It should be understood that in some other embodiments, the forming apparatus 400 includes a material conveying device, a first pressure roller, a second pressure roller, and a roller drive motor. The material conveying device is used to convey the film material carrying the frame 940 and to allow the film material carrying the frame 940 to pass between the first pressure roller and the second pressure roller. The first conveying device 500 can convey the first electrode 910 through the first pressure roller and the second pressure roller, so that the first electrode 910 and the frame 940 pass through the first pressure roller and the second pressure roller overlapping. The roller drive motor can drive the first pressure roller and the second pressure roller to rotate synchronously, thereby applying pressure to the overlapping first electrode 910 and the frame 940, thereby transferring the frame 940 from the film material to the first electrode 910, so that the frame 940 is formed on the first electrode 910, which is beneficial to maintaining the shape stability of the frame 940 transferred to the first electrode 910.

[0086] Understandably, the solid-state battery production line also includes a second conveying device 700 for conveying the second electrode 920. The second conveying device 700 has a second conveying station 710, where the second electrode 920 is fed. The second conveying device 700 can convey the second electrode 920 at the second conveying station 710. Through the automatic conveying of the second electrode 920, it can cooperate with the forming device 400 and the laminating device 800 to achieve the stacking of the first electrode 910 and the second electrode 920 to obtain a battery cell and improve the production quality of the battery cell.

[0087] It should be noted that the first conveying device 500 and the second conveying device 700 can be a conveying device consisting of a take-up roller and an unwind roller, a belt conveying device, or a roller conveying device, etc. Their structures are conventional technical means in this field and will not be described in detail here.

[0088] Understandably, the solid-state battery production line also includes an inspection component 610 and a rejection component 620. The inspection component 610 has an inspection station 611, which can visually inspect the workpiece located at the inspection station 611 to check the forming effect of the frame 940 on the first electrode 910 or the second electrode 920. By comparing it with a preset image, it can determine whether the forming effect of the frame 940 meets expectations. The rejection component 620 is configured to remove the first electrode 910 or the second electrode 920 that fails the inspection based on the inspection result of the inspection component 610. The rejection component 620 has a rejection station 621, which can remove the first electrode 910 or the second electrode 920 that fails the inspection to the rejection station 621 for subsequent manual inspection or waste recycling. This means that the solid-state battery production line also includes a quality inspection process to reject the first electrode 910 or the second electrode 920 that does not meet the expected molding of the frame 940, thus ensuring the production quality of the battery cells.

[0089] It should be noted that the detection component 610 can perform detection by taking pictures and recognizing images using a vision camera. Its structure and detection principle are conventional techniques in this field and will not be described in detail here. The rejection component 620 includes a multi-axis robotic arm and grippers. The multi-axis robotic arm drives the grippers to move, and with the opening and closing of the grippers, the first electrode 910 or the second electrode 920 that fails the inspection can be removed from the preset conveying path, thereby improving the production quality of the battery cells.

[0090] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pole piece processing apparatus based on reinforced ring cutting forming, characterized in that, include: A membrane conveyor assembly (100) is configured to convey a membrane belt; A membrane tape cutting assembly (200) is configured to cut the membrane tape conveyed by the membrane tape conveying assembly (100) to obtain a membrane sheet; The transfer bonding assembly (300) is configured to transfer and bond the membrane sheet cut by the membrane strip cutting assembly (200) to the edge of the first electrode (910), thereby forming an annular reinforcing ring (960) at the edge of the first electrode (910), the first electrode (910) being a positive electrode or a negative electrode.

2. The pole piece machining apparatus based on reinforced ring cutting forming according to claim 1, characterized in that: The film tape includes a substrate, an adhesive layer, and a separator layer stacked sequentially. The film tape conveying assembly (100) includes a first unwinding roller (110), a first winding roller (120), and a second winding roller. The first unwinding roller (110) is used to unwind the film tape. The two ends of the separator layer are respectively connected to the first unwinding roller (110) and the first winding roller (120). The first winding roller (120) is used to peel the separator layer off the adhesive layer. The two ends of the substrate are respectively connected to the first unwinding roller (110) and the second winding roller. The second winding roller is used to wind up the substrate. The transfer lamination assembly (300) is used to laminate the adhesive layer of the film onto the first electrode (910). And / or, it also includes a flipping assembly (630) configured to flip the first electrode (910), and the transfer bonding assembly (300) capable of bonding the film to the two end faces of the first electrode (910) respectively.

3. The electrode processing device based on reinforcing ring cutting and forming according to claim 1, characterized in that: The electrode processing device based on reinforcing ring cutting has a material picking station. The film strip cutting assembly (200) is a laser cutter, which is mounted on the conveying path of the film strip. At the material picking station, the transfer bonding assembly (300) is opposite to the laser cutter to obtain the film cut by the laser cutter from the film strip.

4. The electrode processing device based on reinforcing ring cutting and forming according to claim 3, characterized in that: The transfer bonding assembly (300) includes an adsorption head (310) and a transformer. The transformer is connected to the adsorption head (310) to generate a negative pressure. The adsorption head (310) is used to adsorb the membrane.

5. The electrode processing apparatus based on reinforcing ring cutting and forming according to claim 4, characterized in that: The electrode processing device based on reinforcing ring cutting and forming also has a lamination station (330), and the transfer lamination assembly (300) further includes a transfer member (320), which is configured to drive the adsorption head (310) to move along multiple axes, so that the adsorption head (310) moves between the material picking station and the lamination station (330), and the transfer lamination assembly (300) laminates the film to the first electrode (910) at the lamination station (330).

6. The electrode processing apparatus based on reinforcing ring cutting and forming according to claim 1, characterized in that: The reinforcing ring (960) can be configured as a closed loop or an open loop.

7. The electrode processing apparatus based on reinforcing ring cutting and forming according to claim 1, characterized in that: The diaphragm is arranged in a ring shape; Alternatively, the transfer bonding assembly (300) can bond multiple of the membrane sheets to the same end face of the first electrode (910), so that the multiple membrane sheets are aligned end to end to form the reinforcing ring (960).

8. A solid-state battery production line, characterized in that, Includes the electrode processing apparatus based on reinforcing ring cutting as described in any one of claims 1 to 7.

9. The solid-state battery production line according to claim 8, characterized in that: It also includes a first conveying device (500) for conveying a first electrode (910), a forming device (400) for forming a frame (940) on the first electrode (910) or a second electrode (920), and a laminating device (800) for laminating the first electrode (910) and the second electrode (920). The electrode processing device based on reinforcing ring cutting can laminate the diaphragm onto the first electrode (910) conveyed by the first conveying device (500). The first electrode (910) is one of a positive electrode and a negative electrode, and the second electrode (920) is the other of a positive electrode and a negative electrode. The laminating device (800) can embed the first electrode (910) or the second electrode (920) into the frame (940) to form a battery cell. The reinforcing ring (960) is at least partially disposed on the inner side of the frame (940).

10. The solid-state battery production line according to claim 9, characterized in that: The molding device (400) includes a printing plate, a scraper, a first driving assembly, and an adhesive supply assembly. The printing plate has a frame-shaped perforation. The adhesive supply assembly is used to deliver adhesive to the surface of the printing plate. The first driving assembly is connected to the scraper for driving the scraper to reciprocate along the surface of the printing plate, so that the adhesive frame (940) matching the frame-shaped perforation is formed on the first electrode (910) or the second electrode (920). And / or, it also includes a curing device and a second conveying device (700) for conveying the second electrode (920), wherein the molding device (400) and the curing device are sequentially arranged in the conveying direction of the first conveying device (500) or the second conveying device (700), and the curing device is used to accelerate the curing of the adhesive frame (940) located on the first electrode (910) or the second electrode (920).

Images