Pole piece double-faced adhesive frame forming method and device and solid-state battery production line

Abstract

The invention discloses a pole piece double-sided adhesive frame forming method and device and a solid-state battery production line, and relates to the technical field of solid-state battery manufacturing. The method comprises the steps that a first material belt film and a second material belt film are continuously conveyed, the first material belt film is located below the second material belt film, and the close surfaces of the first material belt film and the second material belt film are each provided with a plurality of rubber frames in the extending direction of the first material belt film and the second material belt film; placing the sheet-shaped pole piece on the rubber frame of the first material belt film, and enabling the rubber frame of the second material belt film to be opposite to the sheet-shaped pole piece up and down; respectively transferring the rubber frame of the first material belt film and the rubber frame of the second material belt film on two opposite surfaces of the sheet-shaped pole piece in a pressing manner, wherein the rubber frames are enclosed along the edge of the sheet-shaped pole piece; and stripping the first material belt film and the second material belt film from the rubber frame of the sheet-shaped pole piece. According to the method, the rubber frames can be efficiently manufactured on the two opposite surfaces of the pole pieces at the same time, the connectivity between the pole pieces is improved, and the conditions that the solid electrolyte membrane and the electrode membrane deviate relatively and the two adjacent pole pieces are short-circuited are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of solid-state battery manufacturing, and in particular to a method and device for forming a double-sided rubber frame for a pole piece, and a solid-state battery production line. Background Art

[0002] Compared with liquid batteries, solid-state batteries have higher energy density, so solid-state batteries are seen as a new type of battery that can replace liquid batteries and be widely used. At present, the production process of solid-state batteries is not mature. Compared with liquid electrolytes that can fully contact the electrode membrane, the solid electrolyte membrane of solid-state batteries is difficult to fit tightly with the electrode membrane, which affects the quality of solid-state batteries.

[0003] Based on this, solid-state battery cells are processed by isostatic pressing to improve the fit between the solid electrolyte membrane and the electrode membrane. However, during the pressing process, the solid electrolyte membrane and the electrode membrane are prone to relative displacement due to the lateral force in the isostatic pressing container. Moreover, during the isostatic pressing process or the lamination process, the edges of the anode membrane and the cathode membrane are prone to bending and contact due to the pressing action, resulting in a short circuit. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a method and device for forming a double-sided plastic frame of a pole piece and a solid-state battery production line, which can simultaneously manufacture plastic frames on two opposite surfaces of the pole piece, and the plastic frame manufacturing efficiency is high, thereby increasing the connection effect between the pole pieces in the solid-state battery cell, and avoiding the problem that the solid electrolyte membrane and the electrode membrane of the solid-state battery cell are easily offset during the isostatic pressing process, and the edges of two adjacent pole pieces are easily bent and contacted during the pressurization process, causing a short circuit.

[0005] The first embodiment of the present invention provides a method for forming a double-sided plastic frame of a pole piece, which comprises the following steps:

[0006] Continuously conveying a first material strip film and a second material strip film, wherein the first material strip film is located below the second material strip film, and surfaces of the first material strip film and the second material strip film close to each other are both provided with a plurality of plastic frames along their extension direction;

[0007] Placing the sheet-like electrode piece on the rubber frame of the first material strip film, and making the rubber frame of the second material strip film and the sheet-like electrode piece face each other in the vertical direction;

[0008] The plastic frame of the first material strip film and the plastic frame of the second material strip film are respectively transferred to two opposite surfaces of the sheet-like electrode piece by pressing, wherein the plastic frame is enclosed along the edge of the sheet-like electrode piece;

[0009] The first material strip film and the second material strip film are peeled off from the rubber frame of the sheet-shaped pole piece.

[0010] The method for forming a double-sided plastic frame of an electrode according to the first aspect of the present invention has at least the following beneficial effects: in the process of forming the plastic frame on the sheet-like electrode, the first material strip film with the plastic frame is conveyed, and the sheet-like electrode is placed on the plastic frame of the first material strip film, so that the sheet-like electrode and the plastic frame can be moved to the pressing station with the first material strip film, and at the same time, the second material strip film with the plastic frame is conveyed, and the plastic frame on the second material strip film is conveyed to the pressing station. At this time, there are plastic frames on both the upper and lower sides of the sheet-like electrode; then, the first material strip is pressed by pressing The film, the sheet-like electrode piece and the second material strip film are subjected to a certain pressure, so that the upper surface and the lower surface of the sheet-like electrode piece are accurately bonded to the glue frames on the upper and lower sides respectively, so that each glue frame can be enclosed along the edge of the sheet-like electrode piece, so that the glue frame can limit the solid electrolyte on the sheet-like electrode piece; after the pressing process is completed, the first material strip film and the second material strip film are peeled off, so that the first material strip film and the second material strip film are separated from the glue frame formed on the sheet-like electrode piece, thereby efficiently completing the work of forming the glue frames on the two relative surfaces of the sheet-like electrode piece.

[0011] By manufacturing a rubber frame on two opposite surfaces of the sheet pole piece, the rubber frame can exert a confining and limiting effect on the solid electrolyte in the structure of the solid-state battery cell, thereby preventing the solid electrolyte membrane and the electrode membrane from being relatively offset during the isostatic pressing process. At the same time, the connection effect between the solid electrolyte membrane and the electrode membrane can be improved, and the sheet pole piece can be supported, thereby avoiding the problem of bending contact and short circuit between two adjacent sheet pole pieces during the pressurization process.

[0012] In some embodiments of the present invention, before the plastic frame of the first material strip film and the plastic frame of the second material strip film are respectively transferred to the two opposite surfaces of the sheet-like pole piece by lamination, the following steps are included: the first material strip film and the second material strip film are respectively clamped and dragged at a set distance so that the sheet-like pole piece and the plastic frame are sent to the lamination station.

[0013] In some embodiments of the present invention, before the plastic frame of the first material strip film and the plastic frame of the second material strip film are respectively transferred to the two opposite surfaces of the sheet-shaped electrode piece by lamination, the following steps are also included: vacuum adsorption is applied to the first material strip film and the sheet-shaped electrode piece located at the lamination station, wherein the first material strip film is formed with a plurality of first adsorption holes;

[0014] And / or, the step of respectively clamping the first material strip film and the second material strip film and dragging them at a set distance comprises the following steps:

[0015] Acquire first position information of the glue frame on the first material strip film or the sheet-shaped electrode on the glue frame, and second position information of the glue frame on the second material strip film;

[0016] Applying a clamping action to the first material strip film and the second material strip film respectively;

[0017] determining a first set distance according to the first position information, and determining a second set distance according to the second position information;

[0018] The first material strip film is dragged according to the first set distance, and the second material strip film is dragged according to the second set distance, so that the sheet-like pole piece and the rubber frames on the upper and lower sides thereof are sent to the pressing station.

[0019] In some embodiments of the present invention, the step of peeling the first material strip film and the second material strip film from the plastic frame of the sheet-shaped electrode piece comprises the following steps:

[0020] In the process of the sheet-like pole piece moving with the first material strip film, the second material strip film is peeled off from the rubber frame located on the upper side of the sheet-like pole piece;

[0021] Then the first material strip film is peeled off from the rubber frame located at the lower side of the sheet-shaped pole piece.

[0022] In some embodiments of the present invention, the peeling of the first material strip film and the second material strip film from the rubber frame of the sheet-like pole piece also includes the following step: during the peeling of the second material strip film, a downward force is applied to the sheet-like pole piece by blowing air.

[0023] In some embodiments of the present invention, the continuously conveying the first material strip film and the second material strip film comprises the following steps:

[0024] Unwinding the first material film strip and the second material film strip respectively, wherein the first material film strip and the second material film strip are both covered with release paper for covering the plastic frame;

[0025] Respectively peeling off and rolling up the release paper on the first material strip film and the release paper on the second material strip film to expose the plastic frame;

[0026] The first material strip film and the second material strip film which have been peeled off the plastic frame are respectively rolled up.

[0027] The second aspect of the present invention provides a pole piece double-sided rubber frame molding device, which is used to implement the pole piece double-sided rubber frame molding method as described in the first aspect of the present invention, and the pole piece double-sided rubber frame molding device includes:

[0028] The strip film conveying unit is provided with two and is used for continuously conveying the first strip film and the second strip film respectively, and a loading station, a pressing station and a unloading station are sequentially provided along the conveying path of the first strip film;

[0029] A loading unit, which is arranged at the loading station and is used to place the sheet-shaped electrode on the rubber frame of the first material strip film;

[0030] A glue frame transfer unit, which is disposed at the pressing station and is used to press the glue frame of the first material strip film and the glue frame of the second material strip film onto two opposite surfaces of the sheet-like electrode respectively by pressing;

[0031] Two stripping units are provided and are used to strip the first material strip film and the second material strip film from the rubber frame of the sheet-shaped pole piece respectively.

[0032] The electrode double-sided glue frame forming device according to the second aspect of the present invention has at least the following beneficial effects: the first material strip film and the second material strip film, both of which are covered with glue frames, are respectively conveyed out by two material strip film conveying units, and the first material strip film can pass through the pressing station and the unloading station in sequence from the loading station, and at the loading station, the sheet electrode is placed on the glue frame of the first material strip film through the loading unit, and the first material strip film moves to the pressing station with the glue frame and the sheet electrode, and at the same time, the second material strip film moves to the pressing station with the glue frame, and then, the glue frame transfer unit is used to transfer the glue frame from top to bottom. Pressure is applied to the arranged second material strip film, the sheet-like electrode piece and the first material strip film, so that the glue frame on the first material strip film and the glue frame on the second material strip film are bonded to the sheet-like electrode piece at the same time, and the glue frame is arranged around the edge of the sheet-like electrode piece; when the sheet-like electrode piece leaves the pressing station with the first material strip film, the first material strip film and the second material strip film are respectively subjected to a peeling action by two peeling units, so that the first material strip film and the glue frame thereon are separated, and the second material strip film and the glue frame thereon are separated, so that glue frames are formed on two opposite surfaces of the sheet-like electrode piece, and the molding efficiency of the glue frames is high.

[0033] In some embodiments of the present invention, the electrode double-sided rubber frame forming device also includes a clamping guide unit, wherein two clamping guide units are provided and are respectively arranged corresponding to the first material strip film and the second material strip film, each of the clamping guide units includes a clamping mechanism and a linear drive mechanism, the clamping mechanism is configured to clamp the first material strip film or the second material strip film, and the linear drive mechanism is configured to drive the clamping mechanism to move reciprocatingly in a linear manner and deliver the rubber frame of the first material strip film or the rubber frame of the second material strip film to the pressing station.

[0034] In some embodiments of the present invention, the pole piece double-sided rubber frame forming device also includes a vacuum adsorption platform, the first material strip film is provided with a plurality of first adsorption holes, the vacuum adsorption platform extends from the loading station to the unloading station, the vacuum adsorption platform is provided with a plurality of second adsorption holes, and the vacuum adsorption platform is configured to be able to vacuum adsorb the first material strip film and the sheet-like pole piece on the first material strip film.

[0035] In some embodiments of the present invention, each of the material strip film conveying units includes a first unwinding mechanism, a first winding mechanism, and a second winding mechanism. The first unwinding mechanism is configured to unwind the first material strip film or the second material strip film, and the first winding mechanism is configured to wind up the first material strip film or the second material strip film. The surfaces of the first material strip film and the second material strip film that are close to each other are covered with release paper for covering several of the plastic frames, and the second winding mechanism is configured to peel off the release paper from the first material strip film or the second material strip film and wind up to expose the plastic frame.

[0036] A third aspect of the present invention provides a solid-state battery production line, which includes a pole piece double-sided rubber frame molding device as described in the second aspect of the present invention.

[0037] The solid-state battery production line according to the third aspect of the embodiment of the present invention has at least the following beneficial effects: by adopting the pole piece double-sided glue frame forming device of the above-mentioned structure, glue frames are simultaneously manufactured on the two opposite surfaces of the sheet-like pole piece, so that the glue frame can exert a position restriction effect on the solid electrolyte in the solid-state battery cell, thereby avoiding the relative displacement of the solid electrolyte membrane and the electrode membrane during the isostatic pressing process, and can improve the connection effect between the solid electrolyte membrane and the electrode membrane, and the glue frame can provide a certain support effect on the sheet-like pole piece, thereby preventing the two adjacent sheet-like pole pieces from bending and contacting and causing a short circuit when subjected to pressurization.

[0038] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the process of forming a double-sided rubber frame of a pole piece according to an embodiment of the present invention;

[0040] Figure 2 It is a specific flow chart of step S10 in the pole piece double-sided rubber frame forming method provided in an embodiment of the present invention;

[0041] Figure 3 is a schematic flow chart of a method for forming a double-sided rubber frame of a pole piece according to another embodiment of the present invention;

[0042] Figure 4 is a schematic flow chart of a method for forming a double-sided rubber frame of a pole piece according to another embodiment of the present invention;

[0043] Figure 5 1 is a schematic diagram of a specific flow chart of step S40 in the method for forming a double-sided rubber frame of a pole piece according to an embodiment of the present invention;

[0044] Figure 6 is a specific schematic diagram of step S40 in a method for forming a double-sided rubber frame of a pole piece according to another embodiment of the present invention;

[0045] Figure 7 2 is a schematic diagram of a specific flow chart of step S28 in the method for forming a double-sided rubber frame of a pole piece according to an embodiment of the present invention;

[0046] Figure 8 2 is a schematic diagram of the three-dimensional structure of a pole piece double-sided rubber frame forming device provided according to an embodiment of the present invention;

[0047] Fig. 9 2. It is a front view of a pole piece double-sided rubber frame forming device provided according to an embodiment of the present invention;

[0048] Fig.10 is a schematic diagram of a three-dimensional structure of a pole piece double-sided rubber frame molding device from another perspective according to an embodiment of the present invention;

[0049] Fig.11 yes Fig.10 A magnified schematic diagram of part A;

[0050] Fig.12 is a schematic diagram of the three-dimensional structure of a clamping guide unit provided according to an embodiment of the present invention;

[0051] Fig.13 is a schematic diagram of the three-dimensional structure of a vacuum belt conveyor mechanism provided according to an embodiment of the present invention;

[0052] Fig.14 is a schematic structural diagram of a first material strip film provided according to an embodiment of the present invention;

[0053] Fig.15 It is a schematic diagram of the structure of a solid-state battery cell provided according to an embodiment of the present invention.

[0054] : Reference numerals: 100, sheet electrode; 101, negative electrode; 102, positive electrode; 110, rubber frame; 200, material strip film; 201, first adsorption hole; 300, clamping guide unit; 310, linear drive mechanism; 320, translation seat; 330, fixed block; 340, pressing block; 350, linear drive member; 400, guide roller; 510, first unwinding mechanism; 520, second winding mechanism; 530, first winding mechanism; 610, rubber frame transfer unit; 620, vacuum adsorption platform; 710, cutting mechanism; 720, vacuum belt conveyor mechanism; 721, conveyor belt; 722, adsorption pores; 723, driven roller; 724, driving roller; 725, support; 800, second unwinding mechanism; 910, second rubber stripping roller; 920, first rubber stripping roller. DETAILED DESCRIPTION

[0055] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0056] In the description of the present invention, it is to be understood that a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Since traditional liquid lithium-ion batteries use diaphragms, liquid electrolytes and traditional anodes such as graphite anodes or silicon anodes; while solid-state batteries use solid electrolytes and lithium metal anodes, among which the energy density of lithium metal anodes is higher than that of traditional anodes, solid-state batteries can store more energy than liquid batteries in the same volume. Therefore, solid-state batteries are currently regarded as a new type of battery that can replace liquid batteries and are widely used in various fields.

[0059] However, the technical maturity of the existing solid-state battery manufacturing process is still insufficient. The liquid electrolyte in the liquid battery can fully contact the electrode membrane, while the solid electrolyte membrane in the solid-state battery is difficult to fit tightly to the electrode membrane, which will lead to poor quality of the solid-state battery. Therefore, after the solid-state battery cells are stacked, the solid electrolyte membrane and the electrode membrane can be pressed by isostatic pressing equipment to a certain extent, so that the solid electrolyte membrane and the electrode membrane can be more closely connected, which is conducive to improving the quality of the solid-state battery.

[0060] However, when the solid-state battery cell is isostatically pressed, the relative position between the solid electrolyte membrane and the electrode membrane is easily offset due to the lateral force in the isostatic pressure container, which in turn affects the connection effect between the solid electrolyte membrane and the electrode membrane, resulting in a decrease in the manufacturing quality of the solid-state battery. In addition, during the isostatic pressing process or the electrode stacking process, the edges of the anode membrane and the cathode membrane are easily bent and contacted due to the pressing effect, which leads to a short circuit problem.

[0061] Based on the above-mentioned problems, the present invention provides a method and device for forming a double-sided rubber frame for a pole piece, and a solid-state battery production line, which can simultaneously manufacture rubber frames on two opposite surfaces of the pole piece, and the rubber frame manufacturing efficiency is high, thereby increasing the connection effect between the pole pieces in the solid-state battery cell, and avoiding the problem that the solid electrolyte membrane and the electrode membrane of the solid-state battery cell are easily offset during the isostatic pressing process, and the edges of two adjacent pole pieces are easily bent and contacted during the pressurization process to cause a short circuit, thereby effectively improving the manufacturing quality of solid-state batteries.

[0062] Reference below Figures 1 to 15 The present invention describes a method and device for forming a double-sided rubber frame for a pole piece and a solid-state battery production line provided in accordance with an embodiment of the present invention.

[0063] like Figures 1 to 15 As shown, the pole piece double-sided rubber frame molding method according to the first embodiment of the present invention is applied to the manufacturing process of solid-state batteries. The pole piece double-sided rubber frame molding method includes the following steps:

[0064] Step S10: continuously conveying the first material strip film and the second material strip film, wherein the first material strip film is located below the second material strip film, and surfaces of the first material strip film and the second material strip film close to each other are both provided with a plurality of plastic frames 110 along their extension direction.

[0065] Step S20: placing the sheet-shaped pole piece 100 on the plastic frame 110 of the first material strip film, and making the plastic frame 110 of the second material strip film and the sheet-shaped pole piece 100 face each other in the upper and lower directions.

[0066] Step S30 : transferring the plastic frame 110 of the first material strip film and the plastic frame 110 of the second material strip film onto two opposite surfaces of the sheet-like pole piece 100 by pressing, wherein the plastic frame 110 is enclosed along the edge of the sheet-like pole piece 100 .

[0067] Step S40 : peeling the first material strip film and the second material strip film from the plastic frame 110 of the sheet-shaped pole piece 100 .

[0068] It is understandable that in the process of forming the glue frame 110 on the sheet-like pole piece 100, the glue frames 110 are arranged on the upper and lower sides of the sheet-like pole piece 100, so that the glue frames 110 on the upper and lower sides can be transferred to the sheet-like pole piece 100 at the same time, thereby shortening the time for manufacturing the glue frames 110 on both sides of the sheet-like pole piece 100, which helps to improve the manufacturing efficiency of the solid-state battery. Since the glue frame 110 lacks support, a plurality of glue frames 110 are manufactured on the surface of the first material strip film and the surface of the second material strip film. The plurality of glue frames 110 are evenly arranged at a certain interval along the extension direction of the first material strip film or the second material strip film, so that the glue frame 110 can obtain the support effect exerted by the first material strip film or the second material strip film, and the glue frame 110 can be transferred from the first material strip film or the second material strip film to the sheet-like pole piece 100.

[0069] Since the first material strip film is arranged below the second material strip film, the first material strip film can provide certain support to the sheet-like pole piece 100 and can drive the sheet-like pole piece 100 to move linearly. Therefore, a loading station, a pressing station and an unloading station are sequentially arranged along the conveying direction of the first material strip film.

[0070] In the transfer work of the glue frame 110, the first material strip film and the second material strip film are transported respectively, and the sheet electrode 100 is placed on the glue frame 110 of the first material strip film at the loading station manually or automatically, so that the glue frame 110 is enclosed along the edge of the sheet electrode 100. At this time, a solid electrolyte layer is formed on the two opposite surfaces of the sheet electrode 100. Then, during the transportation of the first material strip film, the sheet electrode 100 and the corresponding glue frame 110 follow the first material strip film to move to the pressing station; at the same time, during the transportation of the second material strip film, the second material strip film will send the glue frame 110 thereon to the pressing station. At this time, there are glue frames 110 on both the upper and lower sides of the sheet electrode 100, and the sheet electrode 100 and the glue frames 110 on the upper and lower sides are arranged relative to each other.

[0071] Then, a certain pressure is applied to the first material strip film, the sheet electrode piece 100 and the second material strip film located at the pressing station by pressing, so that the upper surface of the sheet electrode piece 100 and the upper rubber frame 110 are accurately bonded to each other, and the lower surface of the sheet electrode piece 100 and the lower rubber frame 110 are accurately bonded to each other, and each rubber frame 110 can be enclosed along the edge of the sheet electrode piece 100, so that the rubber frame 110 can exert a good limiting effect on the solid electrolyte layer on the sheet electrode piece 100.

[0072] After the pressing process is completed, the first material strip film and the second material strip film are respectively peeled off so that the sheet-shaped pole piece 100 can be unloaded manually or mechanically at the unloading station. Through the peeling operation, the first material strip film and the second material strip film are separated from the plastic frame 110 formed on the sheet-shaped pole piece 100, and finally the work of forming the plastic frame 110 on the two opposite surfaces of the sheet-shaped pole piece 100 is completed efficiently.

[0073] The sheet electrode 100 may be a negative electrode 101 or a positive electrode 102. Generally, the negative electrode 101 is set as a sheet electrode 100, and a plastic frame 110 is manufactured on the surface. Fig.15 As shown, the surface of the negative electrode plate 101 is adhered with a solid electrolyte membrane. Since the solid electrolyte membrane is square when viewed from top to bottom, the rubber frame 110 is usually in the shape of a square ring. Moreover, the rubber frame 110 is arranged around the circumference of the negative electrode plate 101 and encloses the solid electrolyte membrane. The rubber frame 110 and the surface of the negative electrode plate 101 are fixedly connected by bonding. The rubber frame 110 exerts a good limiting effect on the solid electrolyte membrane to prevent the solid electrolyte membrane and the electrode membrane from easily offset.

[0074] Furthermore, during the lamination process, the positive electrode sheet 102 and the negative electrode sheet 101 are stacked layer by layer in the up-and-down direction, and the inner edge of the rubber frame 110 is fitted with the outer edge of the positive electrode sheet 102, and the positive electrode sheet 102 and the negative electrode sheet 101 are cross-stacked to form a solid-state battery cell. At this time, the positive electrode sheet 102 is located in the area jointly formed by the two negative electrode sheets 101 and the two rubber frames 110.

[0075] When implementing the pole piece double-sided glue frame forming method provided in the first aspect of the embodiment of the present invention, the glue frame 110 is quickly manufactured on the two opposite surfaces of the sheet-like pole piece 100, so that the glue frame 110 can exert a role of enclosure and limitation on the solid electrolyte layer in the structure of the solid-state battery cell, effectively preventing the relative position displacement between the solid electrolyte membrane and the electrode membrane during the isostatic pressing process, and at the same time, it can also improve the connection effect between the solid electrolyte membrane and the electrode membrane; and, the glue frame 110 can provide support for the sheet-like pole piece 100, thereby avoiding the problem of bending contact and short circuit between two adjacent sheet-like pole pieces 100 during the pressurization process.

[0076] like Figure 1 and Figure 2 As shown, step S10: that is, the step of continuously conveying the first material strip film and the second material strip film, specifically includes the following steps:

[0077] Step S11 : unwinding the first material film and the second material film respectively, wherein the first material film and the second material film are both coated with release paper for covering the plastic frame 110 .

[0078] Step S12: peeling off and rolling up the release paper on the first material film and the release paper on the second material film respectively, so that the plastic frame 110 is exposed.

[0079] Step S13 : respectively rolling up the first material film and the second material film that have been peeled off the plastic frame 110 .

[0080] Since a plurality of adhesive frames 110 are formed on the surface of the first material film, when the first material film is rolled up for transportation and storage, the adhesive frames 110 are easily adhered to the inner and outer layers of the first material film, so a layer of release paper needs to be covered on the surface of the first material film, and at this time, the adhesive frame 110 is located between the first material film and the release paper. Similarly, a layer of release paper also needs to be covered on the second material film.

[0081] However, during the transfer work of the plastic frame 110, the release paper on the first material film and the second material film needs to be peeled off so that the plastic frame 110 can directly contact and adhere to the sheet-shaped electrode 100. Therefore, after the first material film and the second material film are unwound by the existing unwinding machine, the release paper is peeled off and rewound by the existing rewinding machine. When the rewinding machine is running, the release paper can be automatically torn and separated from the first material film or the second material film.

[0082] The first material film strip or the second material film strip is wound up by an existing winder. With the cooperation of the winder and the unwinder, the first material film strip or the second material film strip can be moved with the plastic frame 110 from the loading station to the pressing station and the unloading station in sequence.

[0083] In some embodiments, Figure 3 As shown, before step S30, that is, the step of transferring the first material strip film plastic frame 110 and the second material strip film plastic frame 110 to the two opposite surfaces of the sheet-shaped electrode 100 by lamination, the electrode double-sided plastic frame forming method includes the following steps:

[0084] Step S28: clamping the first material strip film and the second material strip film respectively, and dragging them at a set distance, so that the sheet-like pole piece 100 and the plastic frame 110 are sent to the pressing station.

[0085] It is understandable that the conveying of the first material strip film and the second material strip film is only achieved through the winding action of the winding machine, which makes it difficult to ensure that the sheet-shaped pole piece 100 and the rubber frame 110 are accurately delivered to the pressing station, which easily leads to low transfer accuracy and efficiency of the rubber frame 110. Therefore, the conveying direction of the first material strip film and the second material strip film is interfered by reciprocatingly clamping the first material strip film and the second material strip film. After clamping the first material strip film or the second material strip film, the first material strip film or the second material strip film is dragged according to the set distance, so that the first material strip film and the second material strip film can move in a straight line, and the rubber frame 110 and the sheet-shaped pole piece 100 are accurately delivered to the pressing station.

[0086] Specifically, if Figure 7 As shown, step S28: that is, the step of respectively clamping the first material strip film and the second material strip film and dragging them according to the set distance, specifically includes the following steps:

[0087] Step S281: obtaining first position information of the plastic frame 110 on the first material strip film or the sheet-shaped pole piece 100 on the plastic frame 110 , and second position information of the plastic frame 110 on the second material strip film.

[0088] Step S282: applying a clamping action to the first material strip film and the second material strip film respectively.

[0089] Step S283: determining a first set distance according to the first position information, and determining a second set distance according to the second position information.

[0090] Step S284: drag the first material strip film according to the first set distance, and drag the second material strip film according to the second set distance, so that the sheet-shaped pole piece 100 and the plastic frames 110 on the upper and lower sides thereof are sent to the pressing station.

[0091] In step S281, since the distance between the loading station and the pressing station is constant, and the rubber frame 110 cannot be accurately moved to the position of the loading station every time, there is a certain position deviation between the position of the rubber frame 110 and the position of the loading station. Therefore, it is necessary to determine the dragging distance based on the position deviation. Specifically, the first position information and the second position information can be obtained with high precision through the existing visual system.

[0092] In some examples, before the sheet-like pole piece 100 is placed in the first strip film's plastic frame 110, the first position information of the first strip film's plastic frame 110 is obtained. In other examples, after the sheet-like pole piece 100 is accurately placed in the first strip film's plastic frame 110, the first position information of the sheet-like pole piece 100 is obtained.

[0093] Step S282 may be executed before or after step S281, or simultaneously with step S281.

[0094] In step S283, after obtaining the first position information and the second position information, the first set distance and the second set distance can be determined, that is, the dragging distance for sending the rubber frame 110 and the sheet-like pole piece 100 of the first material strip film to the pressing station, and the dragging distance for sending the rubber frame 110 of the second material strip film to the pressing station are obtained.

[0095] Then, in step S284, the first material strip film and the second material strip film are dragged based on the first set distance and the second set distance to ensure that the sheet pole piece 100 and the rubber frames 110 on its upper and lower sides can be accurately moved to the pressing station, that is, the relative position of the sheet pole piece 100 and the rubber frame 110 is accurate and meets the set requirements, thereby ensuring that the rubber frame 110 can be accurately covered on the surface of the sheet pole piece 100, thereby improving the transfer accuracy of the rubber frame 110.

[0096] In some embodiments, Figure 4 As shown, before step S30, that is, the step of transferring the first material strip film plastic frame 110 and the second material strip film plastic frame 110 to the two opposite surfaces of the sheet-shaped electrode 100 by lamination, the electrode double-sided plastic frame forming method also includes the following steps:

[0097] Step S29 : applying vacuum adsorption to the first material strip film and the sheet-shaped pole piece 100 located at the pressing station, wherein a plurality of first adsorption holes 201 are formed in the first material strip film.

[0098] During the lamination process, the first strip film and the sheet-shaped pole piece 100 are fixed to a certain extent by vacuum adsorption, so as to avoid the problem that the sheet-shaped pole piece 100 is offset relative to the plastic frame 110, resulting in a decrease in the molding accuracy of the plastic frame 110. After the transfer of the plastic frame 110 is completed, the vacuum adsorption is released, so that the sheet-shaped pole piece 100 can leave the lamination station with the first strip film.

[0099] like Figure 1 and Figure 5 As shown, step S40: that is, the step of peeling the first material strip film and the second material strip film from the plastic frame 110 of the sheet-shaped electrode piece 100, specifically includes the following steps:

[0100] Step S41 : while the sheet-shaped pole piece 100 moves along with the first material strip film, the second material strip film is peeled off from the plastic frame 110 located on the upper side of the sheet-shaped pole piece 100 .

[0101] Step S43 : peeling off the first material strip film from the plastic frame 110 located at the lower side of the sheet-shaped pole piece 100 .

[0102] After completing the transfer of the rubber frame 110, the first material strip film and the second material strip film on the sheet-like pole piece 100 need to be peeled off. During the peeling process, the sheet-like pole piece 100 is prone to bending and deformation due to the simultaneous force on its two opposite sides, which affects the manufacturing quality of the solid-state battery.

[0103] Therefore, in this embodiment, the second material strip film is first peeled off from the sheet-like pole piece 100 by means of a stripping roller. During this process, the sheet-like pole piece 100 has a tendency to move upward with the second material strip film due to its adhesion with the second material strip film, but will fall back on the first material strip film under the action of gravity; then, the first material strip film is peeled off from the sheet-like pole piece 100 by means of a stripping roller. At this time, even if the sheet-like pole piece 100 has a tendency to move downward with the first material strip film due to its adhesion with the first material strip film, it will not fall due to the support provided by the support surface provided downstream, thereby avoiding the sheet-like pole piece 100 from bending and deforming uncontrollably due to the upward and downward forces acting on its two relative surfaces at the same place at the same time.

[0104] Furthermore, step S40: peeling the first material strip film and the second material strip film from the plastic frame 110 of the sheet-shaped pole piece 100 specifically includes the following steps:

[0105] Step S42: During the peeling process of the second material strip film, a downward force is applied to the sheet-shaped pole piece 100 by blowing air.

[0106] In order to ensure that the sheet-like pole piece 100 can fall smoothly when the second material strip film is peeled off, this embodiment uses blowing to apply a certain downward force to the sheet-like pole piece 100, so that the second material strip film can be separated from the plastic frame 110 located on the upper side of the sheet-like pole piece 100 smoothly and quickly.

[0107] like Figures 1 to 15 As shown, the pole piece double-sided rubber frame molding device according to the second aspect of the present invention is used to implement the pole piece double-sided rubber frame molding method according to the first aspect of the present invention.

[0108] The pole piece double-sided rubber frame molding device has a first direction, a second direction and an up-down direction, wherein the first direction is perpendicular to the second direction and the up-down direction respectively, and the second direction is perpendicular to the up-down direction. In this embodiment, it is assumed that the first direction is the left-right direction and the second direction is the front-back direction.

[0109] like Figures 8 to 15 As shown, the electrode double-sided rubber frame forming device includes a material strip film conveying unit, a loading unit, a rubber frame transfer unit 610 and a peeling unit.

[0110] The material strip film conveying unit is configured to convey the material strip film 200. In the present embodiment, since it is necessary to complete the transfer work of the glue frame 110 on the upper surface and the lower surface of the sheet-like pole piece 100 at the same time, the material strip film 200 with the glue frame 110 on the surface is arranged on the upper and lower sides of the sheet-like pole piece 100, and the material strip film 200 located on the lower side of the sheet-like pole piece 100 is set as the first material strip film, and the material strip film 200 located on the upper side of the sheet-like pole piece 100 is set as the second material strip film. In addition, there are two material strip film conveying units, one of which is set as the first material strip film conveying unit, which is used to continuously convey the first material strip film, and the other material strip film conveying unit is set as the second material strip film conveying unit, which is used to continuously convey the second material strip film. The first material strip film conveying unit is located below the second material strip film conveying unit.

[0111] Moreover, a loading station, a pressing station and a unloading station are sequentially arranged along the conveying path of the first material strip film. In this embodiment, the loading station is located on the right side of the pressing station, the unloading station is located on the left side of the pressing station, the first material strip film conveying unit conveys the first material strip film from right to left, and the second material strip film conveying unit conveys the second material strip film from right to left.

[0112] It should be noted that a plurality of plastic frames 110 are formed on the surface of the material strip film 200, and the plurality of plastic frames 110 are evenly distributed at set intervals along the extension direction of the material strip film 200, and the surface of the material strip film 200 is covered with release paper, and the release paper is used to cover the plurality of plastic frames 110 to protect the plastic frames 110, so as to avoid the unwinding of the material strip film 200. The first material strip film and the second material strip film can be, but not limited to, PET film, PC film or PVC film.

[0113] Specifically, the structure of each strip film conveying unit includes a first unwinding mechanism 510, a first rewinding mechanism 530, and a second rewinding mechanism 520. The first unwinding mechanism 510 is configured to unwind the strip film 200, the first rewinding mechanism 530 is configured to rewind the strip film 200, and the second rewinding mechanism 520 is configured to peel off the release paper from the strip film 200 and rewind it, so that the plastic frame 110 is exposed and can be transferred to the sheet-shaped electrode 100 at the lamination station.

[0114] In this embodiment, the first unwinding mechanism 510 is located on the right side of the first winding mechanism 530 , and the second winding mechanism 520 is located between the first unwinding mechanism 510 and the first winding mechanism 530 .

[0115] It is understandable that the first unwinding mechanism 510 can be an existing unwinding machine, and the first winding mechanism 530 and the second winding mechanism 520 can be an existing winding machine. A plurality of guide rollers 400 are arranged on the conveying path of the strip film 200 to change the moving direction of the strip film 200 and to keep the strip film 200 at a certain tension. In addition, a strip buffer mechanism can also be provided to ensure that the unwinding speed of the strip film 200, the transfer speed of the plastic frame 110 and the winding speed of the strip film 200 are coordinated and do not interfere with each other.

[0116] The loading unit is correspondingly arranged at the loading station, and is used to place the sheet-shaped pole piece 100 on the plastic frame 110 of the first strip film. The loading unit can be a manipulator with a vacuum suction cup, which sucks the sheet-shaped pole piece 100 by vacuum adsorption and accurately places it on the plastic frame 110.

[0117] The rubber frame transfer unit 610 is correspondingly arranged at the pressing station, and is used to press the rubber frame 110 of the first material strip film and the rubber frame 110 of the second material strip film respectively on the two opposite surfaces of the sheet-like pole piece 100 located at the pressing station by pressing. Among them, the rubber frame transfer unit 610 is an existing pressing mechanism, and the rubber frame 110 on the sheet-like pole piece 100 and the two material strip films 200 is pressed by the rubber frame transfer unit 610, so that the rubber frame 110 is formed on the upper surface and the lower surface of the sheet-like pole piece 100.

[0118] There are two stripping units, one of which is a first stripping unit for stripping the first material film from the plastic frame 110 of the sheet-like pole piece 100, and the other stripping unit is a second stripping unit for stripping the second material film from the plastic frame 110 of the sheet-like pole piece 100. The stripping unit may be a stripping roller.

[0119] It can be understood that when the two material strip film conveying units are started, the first unwinding mechanism 510, the second winding mechanism 520 and the first winding mechanism 530 are started at the same time, and the second winding mechanism 520 peels off the release paper on the material strip film 200, so that the rubber frame 110 on the material strip film 200 is in a naked state; at this time, the sheet-like pole piece 100 can be placed downward from the loading station on the rubber frame 110 of the first material strip film through the loading unit, so that the rubber frame 110 is enclosed along the edge of the sheet-like pole piece 100, and the sheet-like pole piece 100 and the rubber frame 110 can move together with the first material strip film.

[0120] Next, when the sheet-like pole piece 100 and the rubber frame 110 move to the pressing station with the first material strip film, the second material strip film will send the corresponding rubber frame 110 to the pressing station. At this time, the sheet-like pole piece 100 and the rubber frames 110 on the upper and lower sides are pressed by the rubber frame transfer unit 610, so that the sheet-like pole piece 100 and the rubber frame 110 are tightly bonded. Subsequently, under the winding action of the first winding mechanism 530, the material strip film 200 and the rubber frame 110 can be separated by the stripping unit, so that the rubber frame 110 is transferred from the material strip film 200 to the sheet-like pole piece 100.

[0121] Finally, when the sheet electrode 100 is moved from the pressing station to the unloading station, the unloading work of the sheet electrode 100 can be completed by manual unloading or robot unloading. At this time, the two opposite surfaces of the sheet electrode 100 are formed with solid electrolyte and glue frame 110.

[0122] When using the electrode double-sided rubber frame forming device provided by the second aspect of the embodiment of the present invention, the first material strip film and the second material strip film, both with the rubber frame 110, are respectively conveyed out through two material strip film conveying units, and the first material strip film can pass through the pressing station and the unloading station in sequence from the loading station. At the loading station, the sheet-like electrode 100 is accurately placed on the rubber frame 110 of the first material strip film through the loading unit, and the first material strip film is used as a transport carrier for the sheet-like electrode 100, so that the first material strip film provides the sheet-like electrode 100 with dual functions of support and conveyance.

[0123] When the first material strip film with the glue frame 110 and the sheet-like pole piece 100 is moved to the pressing station, and the second material strip film with the glue frame 110 is moved to the pressing station at the same time, the glue frame transfer unit 610 is used to apply pressure to the second material strip film, the sheet-like pole piece 100 and the first material strip film arranged from top to bottom, so that the glue frame 110 on the first material strip film and the glue frame 110 on the second material strip film are bonded to the sheet-like pole piece 100 at the same time, and the glue frame 110 is arranged around the edge of the sheet-like pole piece 100.

[0124] When the sheet-like pole piece 100 leaves the pressing station with the first material strip film, two stripping units are used to strip the first material strip film and the second material strip film respectively, so that the first material strip film and the rubber frame 110 thereon are separated, and the second material strip film and the rubber frame 110 thereon are separated, so that the rubber frames are formed on the two opposite surfaces of the sheet-like pole piece 100, and the molding efficiency of the rubber frame 110 is high.

[0125] In some embodiments, Figure 8 , Fig. 9 and Fig.12 As shown, the pole piece double-sided rubber frame forming device also includes a clamping guide unit 300. The clamping guide unit 300 is used to clamp and fix the strip film 200 and accurately deliver the rubber frame 110 on the strip film 200 to the pressing station.

[0126] Two clamping guide units 300 are provided, and are respectively arranged corresponding to the first material strip film and the second material strip film. One of the clamping guide units 300 is configured to clamp the first material strip film and accurately transport the rubber frame 110 and the sheet-shaped electrode 100 of the first material strip film to the pressing station; the other clamping guide unit 300 is configured to clamp the second material strip film and accurately transport the rubber frame 110 of the second material strip film to the pressing station.

[0127] The clamping guide unit 300 and the strip film conveying unit are arranged in a one-to-one correspondence. The two clamping guide units 300 are arranged at intervals along the up-down direction, and the two strip film conveying units are arranged at intervals along the up-down direction. At the pressing station, there is a second strip film and a rubber frame 110 on the upper side of the sheet-like pole piece 100, and there is a first strip film and a rubber frame 110 on the lower side of the sheet-like pole piece 100. At this time, solid electrolytes are formed on the upper and lower surfaces of the sheet-like pole piece 100, and the rubber frame 110 needs to be formed on the upper and lower surfaces of the sheet-like pole piece 100.

[0128] Specifically, the structure of each clamping guide unit 300 includes a clamping mechanism and a linear drive mechanism 310. The clamping mechanism is configured to clamp the strip film 200, and the linear drive mechanism 310 is configured to drive the clamping mechanism to move back and forth linearly, and transport the strip film 200 from the loading station to the pressing station, so that the rubber frame 110 on the strip film 200 is accurately delivered to the pressing station.

[0129] In this embodiment, the clamping guide unit 300 is arranged between the pressing station and the unloading station. Before unloading the sheet-like pole piece 100, the strip film 200 will be separated from the rubber frame 110 on the sheet-like pole piece 100, and the strip film 200 will be clamped and conveyed by the clamping guide unit 300, and at the same time, it will be wound by the first winding mechanism 530. At this time, the sheet-like pole piece 100 will fall on the support surface of the support seat after leaving the strip film 200, so as to be unloaded manually or automatically.

[0130] It is understandable that the linear drive mechanism 310 may be, but is not limited to, a linear module or an electric cylinder, etc. If the strip film 200 is conveyed only by the winding action of the first winding mechanism 530, the rubber frame 110 and the sheet-like pole piece 100 may not be accurately and quickly moved to the pressing station, resulting in low molding accuracy of the rubber frame 110 on the sheet-like pole piece 100.

[0131] Based on this problem, this embodiment applies a certain clamping effect to the material strip film 200 that has been peeled off the rubber frame 110 through the clamping mechanism, so that the material strip film 200 is fixed relative to the clamping mechanism, and then, the clamping mechanism is driven to move linearly through the linear driving mechanism 310, and the distance of the linear movement is controllable. Therefore, the clamping mechanism can move a certain distance with the material strip film 200 under the action of the linear driving mechanism 310, so that the material strip film 200 and the rubber frame 110 on it can move at the same time. For the first material strip film, the first material strip film will move with the rubber frame 110 and the sheet-like pole piece 100.

[0132] Through the above operation, the sheet-like pole piece 100 and the rubber frames 110 on its upper and lower sides can be accurately moved to the pressing station, ensuring that the relative position between the sheet-like pole piece 100 and the rubber frame 110 meets the set position requirements and there is no position deviation, so that the rubber frame 110 can be accurately laminated with the sheet-like pole piece 100, thereby improving the molding accuracy of the rubber frame 110 and avoiding the problem of low manufacturing accuracy of the rubber frame 110 caused by position deviation of the sheet-like pole piece 100 during transportation. This is beneficial to improving the manufacturing quality of solid-state batteries.

[0133] Specifically, Fig.12 As shown, the clamping mechanism includes a fixed block 330, a pressing block 340 and a linear drive member 350. The fixed block 330 is fixedly connected to the output end of the linear drive mechanism 310, a guide hole is formed between the pressing block 340 and the fixed block 330, and the guide hole is used for the feeding tape film 200 to pass through, the output end of the linear drive member 350 is fixedly connected to the pressing block 340, and the linear drive member 350 is configured to drive the pressing block 340 to move relative to the fixed block 330 to effectively clamp the tape film 200. The linear drive member 350 can be, but is not limited to, an electric cylinder, a hydraulic cylinder or a pneumatic cylinder.

[0134] In this embodiment, a translation seat 320 is provided at the output end of the linear drive mechanism 310, and the fixed block 330 is in a square ring shape and is fixedly connected to the upper surface of the translation seat 320, and the fixed block 330 has a square through hole. The linear drive member 350 is a telescopic cylinder, which is fixedly connected to the fixed block 330, and the pressure block 340 is located above the telescopic cylinder and is fixedly connected to the movable rod of the telescopic cylinder. The telescopic cylinder and the pressure block 340 are both arranged in the square through hole of the fixed block 330, and a guide hole is formed between the upper surface of the pressure block 340 and the fixed block 330, and the guide hole is a square hole. In addition, the width direction of the strip film 200 is consistent with the width direction of the guide hole, and the width dimension of the strip film 200 can be equal to or less than the width dimension of the guide hole.

[0135] When the telescopic cylinder drives the pressure block 340 to move upward, the size of the guide hole becomes smaller, and the pressure block 340 can exert a clamping effect on the material strip film 200 in the guide hole; when the telescopic cylinder drives the pressure block 340 to move downward, the size of the guide hole becomes larger, and the pressure block 340 releases the clamping effect on the material strip film 200 in the guide hole, then the material strip film 200 can move relative to the clamping mechanism along the extension direction of the guide hole.

[0136] Therefore, when the transfer work of the rubber frame 110 is completed on both sides of the sheet-like pole piece 100, the clamping mechanism will release the clamping and fixing effect on the material strip film 200, and will move in the opposite direction under the driving action of the linear driving mechanism 310; then, the clamping mechanism will re-apply the clamping and fixing effect to the material strip film 200, and drag the material strip film 200 to move a certain distance, so that the material strip film 200 will accurately transport the rubber frame 110 to the pressing station, wherein the first material strip film will also carry the sheet-like pole piece 100, and transport the rubber frame 110 and the sheet-like pole piece 100 to the pressing station together.

[0137] Of course, it is not excluded that in other embodiments, the pressing block 340 is located above the fixing block 330 and defines a guide hole together with the fixing block 330 .

[0138] It can be understood that, depending on the layout of the pole piece double-sided rubber frame molding device, the clamping guide unit 300 can be installed horizontally so that the linear drive mechanism 310 can drive the clamping mechanism to move in the first direction, or the clamping guide unit 300 can be installed vertically so that the linear drive mechanism 310 can drive the clamping mechanism to move in the up and down directions.

[0139] In some embodiments, the strip film 200 has a bearing surface with a width greater than the width of the sheet-like pole piece 100. It is understandable that the width dimension of the strip film 200 is greater than the width dimension of the sheet-like pole piece 100. Then, in the process of transferring the sheet-like pole piece 100 to the glue frame 110, the strip film 200 can receive the colloid overflowing from the sheet-like pole piece 100, avoiding the colloid overflowing to the outside of the sheet-like pole piece 100 and causing environmental pollution, such as the pressing surface of the glue frame transfer unit 610 and the surface of the support platform being contaminated, thereby affecting the transfer effect of the glue frame 110 of the next sheet-like pole piece 100. It should be noted that the support platform can provide a certain support effect to the strip film 200 and the sheet-like pole piece 100 during the pressing process.

[0140] In some embodiments, Figure 8 and Fig.13 As shown, the pole piece double-sided rubber frame forming device also includes a vacuum adsorption platform 620. Among them, the first material strip film is provided with a plurality of first adsorption holes 201, and the plurality of first adsorption holes 201 are arranged in an array on the first material strip film. The vacuum adsorption platform 620 extends from the loading station to the unloading station. Therefore, the vacuum adsorption platform 620, as a supporting platform, can provide support and vacuum adsorption to the first material strip film and the sheet-like pole piece 100 during the loading work, the transfer work of the rubber frame 110, and the unloading work. Specifically, the vacuum adsorption platform 620 is provided with a plurality of second adsorption holes, and the vacuum adsorption platform 620 is configured to be able to vacuum adsorb the first material strip film and the sheet-like pole piece 100 on the first material strip film.

[0141] It can be understood that the glue frame transfer unit 610 is arranged above the vacuum adsorption platform 620, and the vacuum adsorption platform 620 is located below the first material strip film and the sheet-like pole piece 100. There is a gap between the glue frame transfer unit 610 and the vacuum adsorption platform 620 in the up and down directions, and the gap can allow the first material strip film with the glue frame 110 and the second material strip film with the glue frame 110 and the sheet-like pole piece 100 to pass through. When the sheet-like pole piece 100 and the glue frames 110 on the upper and lower sides are moved to the pressing station together, the glue frame transfer unit 610 will apply a pressing process to them, so that the glue frames 110 on the upper and lower sides are respectively bonded to the upper surface and the lower surface of the sheet-like pole piece 100.

[0142] When the vacuum adsorption platform 620 is in operation, the vacuum adsorption of the second adsorption hole causes the first strip film to be adsorbed and fixed on the upper surface of the vacuum adsorption platform 620 by the negative pressure airflow. At this time, the second adsorption hole is connected to the first adsorption hole 201, and the sheet-like pole piece 100 is also adsorbed and fixed on the upper surface of the first strip film under the action of the negative pressure airflow. Then, when the sheet-like pole piece 100 is transferred to the plastic frame 110, the first strip film and the sheet-like pole piece 100 are fixed relative to the vacuum adsorption platform 620, which can prevent the sheet-like pole piece 100 from being offset and affecting the transfer accuracy of the plastic frame 110.

[0143] In some embodiments, a visual inspection mechanism is provided above the loading station, and the visual inspection mechanism is configured to obtain position data of the rubber frame 110 and / or the sheet-shaped pole piece 100. Moreover, each clamping guide unit 300 is configured to convey the material strip film 200 according to the position data to adjust the position of the rubber frame 110 and the sheet-shaped pole piece 100 at the pressing station.

[0144] It is understandable that the visual inspection mechanism can be a camera in an existing visual system, which can collect image data of the rubber frame 110 and / or the sheet-like pole piece 100, so as to obtain the position information of the rubber frame 110 and / or the sheet-like pole piece 100 before the transfer work of the rubber frame 110 begins. After obtaining the position information of the rubber frame 110 of the first strip film, the feeding unit can accurately place the sheet-like pole piece 100 on the rubber frame 110. At the same time, after obtaining the position information of the rubber frame 110 or the position information of the sheet-like pole piece 100, the clamping guide unit 300 can adjust the position of the strip film 200, and by dragging the strip film 200 a certain distance, the rubber frame 110 and the sheet-like pole piece 100 can be accurately moved to the pressing station to ensure that when the rubber frame 110 and the sheet-like pole piece 100 are overlapped, the relative position of the rubber frame 110 and the sheet-like pole piece 100 is accurate.

[0145] Specifically, before the sheet-like pole piece 100 moves to the pressing station, the position information of the rubber frame 110 located at the lower side of the sheet-like pole piece 100 and the position information of the rubber frame 110 located at the upper side of the sheet-like pole piece 100 are obtained through the visual detection mechanism, so that the position of the corresponding material strip film 200 is adjusted through the corresponding pressing and clamping guide unit 300, so that the sheet-like pole piece 100 can be accurately overlapped with the rubber frames 110 on the upper and lower sides.

[0146] In some embodiments, Figures 8 to 10 , Fig.13 As shown, the electrode double-sided rubber frame forming device also includes a cutting mechanism 710 , a second unwinding mechanism 800 and a vacuum belt conveying mechanism 720 .

[0147] Among them, the second unwinding mechanism 800 is configured to unwind the electrode material strip and convey it to the cutting mechanism 710 so as to cut the electrode material strip. The second unwinding mechanism 800 is an existing unwinding machine. The cutting mechanism 710 is configured to cut the electrode material strip into a plurality of sheet-like electrode sheets 100. The vacuum belt conveyor mechanism 720 is configured to convey the cut sheet-like electrode sheets 100 in the direction of the loading station. The loading unit is a transfer robot with a suction cup, and the loading unit is configured to transfer the sheet-like electrode sheets 100 from the vacuum belt conveyor mechanism 720 to the loading station, so that the sheet-like electrode sheets 100 accurately fall on the rubber frame 110 of the first material strip film.

[0148] In this embodiment, the cutting mechanism 710 is located on the left side of the second unwinding mechanism 800, and the vacuum belt conveyor mechanism 720 is located on the left side of the cutting mechanism 710. When the cutting mechanism 710 is in operation, the long electrode sheet strip released by the second unwinding mechanism 800 can be cut by the cutting knife that moves up and down, and a plurality of sheet-shaped electrode sheets 100 can be cut. Then, the sheet-shaped electrode sheets 100 fall on the conveying plane of the vacuum belt conveyor mechanism 720.

[0149] Specifically, if Fig.13 As shown, the vacuum belt conveyor mechanism 720 includes a conveyor belt 721, a driven roller 723, a driving roller 724 and a support 725. The support 725 is provided with driven rollers 723 on opposite sides in the first direction. The driven roller 723 is installed on the support 725 through a bearing seat. The driven roller 723 can rotate relative to the support 725 around the central axis extending along the second direction. The driving roller 724 is arranged below the support 725 through a bearing seat. The driving roller 724 can be driven to rotate by a rotating drive member such as a motor. The conveyor belt 721 is wound between the driving roller 724 and the two driven rollers 723. When the driving roller 724 is actively rotating, the conveyor belt 721 can run and convey the sheet-shaped pole piece 100 to the direction of the loading station.

[0150] The surface of the conveyor belt 721 is provided with a plurality of adsorption holes 722 arranged in an array. The interior of the support 725 is hollow to form a vacuum cavity. The vacuum cavity is provided with an air flow inlet and an air flow outlet. The air flow outlet is connected to the vacuum pumping equipment through a pipeline. There are multiple air flow inlets, which are located on the upper surface of the support 725. When the conveyor belt 721 is running, the air flow inlet is connected with the adsorption holes 722. The sheet-like electrode piece 100 is fixed relative to the conveyor belt 721 through the vacuum adsorption effect, so that the conveyor belt 721 can stably transport the sheet-like electrode piece 100.

[0151] The vacuum adsorption platform 620 and the vacuum belt conveyor mechanism 720 are arranged at intervals along the second direction. The transfer robot includes a vacuum suction cup and a robot arm, and the vacuum suction cup is fixedly connected to the movable end of the robot arm. The transfer robot uses the vacuum suction cup to adsorb and fix the sheet-like electrode piece 100, so that the sheet-like electrode piece 100 moves upward and leaves the conveyor belt 721, and then the transfer robot accurately places the sheet-like electrode piece 100 on the rubber frame 110 of the first strip film.

[0152] In some embodiments, Fig.10 and Fig.11 As shown, the first stripping unit includes a rotatable first stripping roller 920, the rotation axis of which extends along the second direction, and the second stripping unit includes a rotatable second stripping roller 910, the rotation axis of which also extends along the second direction.

[0153] The second stripping roller 910 is located above the first stripping roller 920, and the second stripping roller 910 is located between the first stripping roller 920 and the laminating station, that is, the second stripping roller 910 and the first stripping roller 920 are arranged in sequence along the conveying direction of the sheet-like pole piece 100. The second stripping roller 910 is first used to strip the second material film on the sheet-like pole piece 100, and then the first stripping roller 920 is used to strip the first material film on the sheet-like pole piece 100.

[0154] A guide roller 400 and a clamping guide unit 300 are arranged above the second stripping roller 910. The second material strip film can bypass the second stripping roller 910 and the guide roller 400 in sequence. At this time, the guide roller 400 can change the moving direction of the second material strip film and guide the second material strip film upward to the clamping guide unit 300. The clamping guide unit 300 can clamp the second material strip film and drag it in a straight line.

[0155] A guide roller 400 and a clamping guide unit 300 are arranged below the first stripping roller 920. The first material strip film can bypass the first stripping roller 920 and the guide roller 400 in sequence. At this time, the guide roller 400 can change the moving direction of the first material strip film and guide the first material strip film downward to the clamping guide unit 300. The clamping guide unit 300 can clamp the first material strip film and drag it in a straight line.

[0156] Since a material strip buffer mechanism can be additionally provided between the pressing and clamping guide unit 300 and the first winding mechanism 530 , the rhythm of the material strip film 200 dragged by the pressing and clamping guide unit 300 and the winding rhythm of the material strip film 200 do not interfere with each other.

[0157] It can be understood that after the sheet-like pole piece 100 is formed with the glue frame 110 on both sides, the sheet-like pole piece 100 continues to move along the conveying direction of the first material strip film. When the corresponding clamping guide unit 300 drags the second material strip film, the second material strip film that bypasses the second glue stripping roller 910 will first detach from the glue frame 110 on the upper side of the sheet-like pole piece 100. During this process, if the sheet-like pole piece 100 has a tendency to move upward with the second material strip film due to its adhesion to the second material strip film, the sheet-like pole piece 100 will fall back on the first material strip film under the action of gravity.

[0158] Then, the sheet-like pole piece 100 continues to move along with the first material strip film and reaches the first stripping roller 920. When the corresponding clamping guide unit 300 drags the first material strip film, the first material strip film that bypasses the first stripping roller 920 will be separated from the plastic frame 110 on the lower side of the sheet-like pole piece 100. In this process, even if the sheet-like pole piece 100 tends to move downward along with the first material strip film due to its adhesion to the first material strip film, it will maintain linear movement due to the downstream support surface and will not fall, thereby avoiding the problem that the sheet-like pole piece 100 is easily bent and deformed uncontrollably due to the upward and downward forces acting on the two relative surfaces of the sheet-like pole piece 100 at the same place at the same time.

[0159] Furthermore, the second stripping unit also includes a blowing mechanism. The blowing mechanism is disposed between the second stripping roller 910 and the first stripping roller 920, and the blowing mechanism may include a gas nozzle, which can spray a certain pressure gas. During the stripping of the second strip film, the blowing mechanism can exert a downward force on the sheet-like pole piece 100 to ensure that the sheet-like pole piece 100 located at the second stripping roller 910 can fall smoothly, and because the second strip film is subjected to the force of the second stripping roller 910 and the clamping guide unit 300, the sheet-like pole piece 100 is subjected to the force of the blowing mechanism, which enables the second strip film and the sheet-like pole piece 100 to be separated faster, and the stripping effect is good.

[0160] like Figures 1 to 15As shown, a solid-state battery production line according to an embodiment of the third aspect of the present invention includes a pole piece double-sided rubber frame molding device as in the embodiment of the second aspect.

[0161] After the transfer work of the glue frame 110 is completed, the positive electrode sheet 102 and the negative electrode sheet 101 are stacked, so that the inner edge of the glue frame 110 fits the outer edge of the positive electrode sheet 102, and the cross stacking is performed to form a solid-state battery cell. The solid-state battery cell made by the solid-state battery production line improved by the third aspect of the present invention can produce the following effects: in the process of isostatic pressing equipment maintaining pressure and pressurizing the solid-state battery cell, the glue frame 110 located between the solid electrolyte membrane and the electrode membrane can ensure that the solid electrolyte membrane and the electrode membrane will not be offset during the force process, and the connection effect between the solid electrolyte membrane and the electrode membrane can be enhanced. In addition, since the width dimension of the negative electrode sheet 101 is greater than the width dimension of the positive electrode sheet 102, the glue frame 110 can exert a certain support on the negative electrode sheet 101, so that even if the negative electrode sheet 101 bends during the pressurization process, it will not cause the edges of the two adjacent negative electrode sheets 101 to contact and short-circuit due to bending.

[0162] It is understandable that the manufacturing process of solid-state batteries includes multiple processes such as rolling process, solid electrolyte manufacturing process, pole piece cutting process, rubber frame manufacturing process, quality inspection process, etc., and each processing process is equipped with corresponding processing equipment. However, this embodiment only makes a unique structural design for the pole piece double-sided rubber frame forming device in the solid-state battery production line, and does not propose improvement requirements for other equipment in the solid-state battery production line. Therefore, those skilled in the art should understand the remaining equipment structure and working principle of the solid-state battery production line, which will not be described here.

[0163] In the solid-state battery production line provided by the third aspect of the embodiment of the present invention, by adopting the pole piece double-sided glue frame forming device of the above structure, the glue frame 110 is simultaneously manufactured on the two opposite surfaces of the sheet-like pole piece 100, so that the glue frame 110 can exert a position restriction effect on the solid electrolyte in the solid-state battery cell, thereby avoiding the relative displacement of the solid electrolyte membrane and the electrode membrane during the isostatic pressing process, and can improve the connection effect between the solid electrolyte membrane and the electrode membrane. Moreover, the glue frame 110 can provide a certain support for the sheet-like pole piece 100, thereby preventing the two adjacent sheet-like pole pieces 100 from bending and contacting and causing a short circuit when subjected to pressurization.

[0164] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0165] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for forming a double-sided rubber frame of a pole piece, characterized in that: The steps include: Continuously conveying a first material strip film and a second material strip film, wherein the first material strip film is located below the second material strip film, and surfaces of the first material strip film and the second material strip film that are close to each other are both provided with a plurality of plastic frames (110) along their own extension direction; Placing the sheet-shaped pole piece (100) on the rubber frame (110) of the first material strip film, and arranging the rubber frame (110) of the second material strip film and the sheet-shaped pole piece (100) to be opposite to each other in the upper and lower directions; The plastic frame (110) of the first material strip film and the plastic frame (110) of the second material strip film are respectively transferred to two opposite surfaces of the sheet-shaped pole piece (100) by pressing, wherein the plastic frame (110) is enclosed along the edge of the sheet-shaped pole piece (100); The first material strip film and the second material strip film are peeled off from the rubber frame (110) of the sheet-shaped pole piece (100).

2. The method for forming a double-sided rubber frame of a pole piece according to claim 1, characterized in that: Before the first material strip film and the second material strip film are respectively transferred to two opposite surfaces of the sheet-like pole piece (100) by lamination, the following steps are included: the first material strip film and the second material strip film are respectively clamped and dragged at a set distance so that the sheet-like pole piece (100) and the glue frame (110) are sent to the lamination station.

3. The method for forming a double-sided rubber frame of a pole piece according to claim 2, characterized in that: Before the first material strip film's plastic frame (110) and the second material strip film's plastic frame (110) are respectively transferred to two opposite surfaces of the sheet-shaped pole piece (100) by lamination, the method further includes the following steps: applying vacuum adsorption to the first material strip film and the sheet-shaped pole piece (100) located at the lamination station, wherein the first material strip film is formed with a plurality of first adsorption holes (201); And / or, the step of respectively clamping the first material strip film and the second material strip film and dragging them at a set distance comprises the following steps: Acquiring first position information of the glue frame (110) on the first material strip film or the sheet-shaped pole piece (100) on the glue frame (110), and second position information of the glue frame (110) on the second material strip film; Applying a clamping action to the first material strip film and the second material strip film respectively; determining a first set distance according to the first position information, and determining a second set distance according to the second position information; The first material strip film is dragged according to the first set distance, and the second material strip film is dragged according to the second set distance, so that the sheet-shaped pole piece (100) and the rubber frames (110) on the upper and lower sides thereof are sent to the pressing station.

4. The method for forming a double-sided rubber frame of a pole piece according to claim 1, characterized in that: The step of peeling the first material strip film and the second material strip film from the plastic frame (110) of the sheet-shaped pole piece (100) comprises the following steps: In the process of the sheet-shaped pole piece (100) moving along with the first material strip film, the second material strip film is peeled off from the rubber frame (110) located on the upper side of the sheet-shaped pole piece (100); The first material strip film is then peeled off from the rubber frame (110) located on the lower side of the sheet-shaped pole piece (100).

5. The method for forming a double-sided rubber frame of a pole piece according to claim 4, characterized in that: The process of peeling the first material strip film and the second material strip film from the plastic frame (110) of the sheet-like pole piece (100) also includes the following steps: during the peeling process of the second material strip film, a downward force is applied to the sheet-like pole piece (100) by blowing air.

6. The method for forming a double-sided rubber frame of a pole piece according to claim 1, characterized in that: The method of continuously conveying the first strip film and the second strip film comprises the following steps: Respectively unwinding a first material strip film and a second material strip film, wherein both the first material strip film and the second material strip film are coated with release paper for covering a plastic frame (110); The release paper on the first material strip film and the release paper on the second material strip film are peeled off and rolled up respectively, so that the plastic frame (110) is exposed; The first material strip film and the second material strip film which have been peeled off the plastic frame (110) are respectively rolled up.

7. The pole piece double-sided rubber frame forming device is characterized by: Used to implement the pole piece double-sided rubber frame molding method according to claim 1, the pole piece double-sided rubber frame molding device comprises: The strip film conveying unit is provided with two and is used for continuously conveying the first strip film and the second strip film respectively, and a loading station, a pressing station and a unloading station are sequentially provided along the conveying path of the first strip film; A loading unit, which is arranged at the loading station and is used to place the sheet-shaped pole piece (100) on the rubber frame (110) of the first material strip film; A rubber frame transfer unit (610), which is arranged at the pressing station and is used to press the rubber frame (110) of the first material strip film and the rubber frame (110) of the second material strip film onto two opposite surfaces of the sheet-shaped pole piece (100) respectively by pressing; Two peeling units are provided and are used to peel the first material strip film and the second material strip film from the rubber frame (110) of the sheet-shaped pole piece (100) respectively.

8. The pole piece double-sided rubber frame forming device according to claim 7, characterized in that: It also includes a clamping guide unit (300), two of which are provided and are respectively arranged corresponding to the first material strip film and the second material strip film, each of which includes a clamping mechanism and a linear drive mechanism (310), the clamping mechanism is configured to clamp the first material strip film or the second material strip film, and the linear drive mechanism (310) is configured to drive the clamping mechanism to move reciprocatingly and linearly, and to deliver the rubber frame (110) of the first material strip film or the rubber frame (110) of the second material strip film to the pressing station.

9. The pole piece double-sided rubber frame molding device according to claim 7, characterized in that: It also includes a vacuum adsorption platform (620), the first material strip film is provided with a plurality of first adsorption holes (201), the vacuum adsorption platform (620) extends from the loading station to the unloading station, the vacuum adsorption platform (620) is provided with a plurality of second adsorption holes, and the vacuum adsorption platform (620) is configured to be able to vacuum adsorb the first material strip film and the sheet-like pole piece (100) on the first material strip film.

10. The pole piece double-sided rubber frame molding device according to claim 7, characterized in that: Each of the material strip film conveying units includes a first unwinding mechanism (510), a first winding mechanism (530) and a second winding mechanism (520), wherein the first unwinding mechanism (510) is configured to unwind the first material strip film or the second material strip film, and the first winding mechanism (530) is configured to wind up the first material strip film or the second material strip film, and surfaces of the first material strip film and the second material strip film that are close to each other are coated with release paper for covering a plurality of the plastic frames (110), and the second winding mechanism (520) is configured to peel off the release paper from the first material strip film or the second material strip film and wind up so that the plastic frame (110) is exposed.

11. Solid-state battery production line, characterized in that: It comprises a pole piece double-sided rubber frame molding device as described in any one of claims 7 to 10.

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