Solid-state battery cell manufacturing device based on single-sided rubber frame molding

Abstract

The utility model discloses a solid-state battery cell manufacturing device based on single-sided rubber frame forming, and relates to the technical field of solid-state battery manufacturing. The device comprises a first pole piece conveying mechanism, a second pole piece conveying mechanism, a rubber frame forming mechanism and a lamination mechanism, the first pole piece conveying mechanism is used for conveying a first pole piece; a forming station is arranged on the first pole piece conveying mechanism; the second pole piece conveying mechanism is used for conveying a second pole piece; the rubber frame forming mechanism is used for manufacturing a rubber frame on the surface of the first pole piece, and the thickness of the rubber frame is greater than that of the second pole piece; the rubber frame forming mechanism is arranged above the forming station; and the lamination mechanism is used for sequentially and alternately laminating the second pole pieces and the first pole pieces with the rubber frames, so that the second pole pieces are embedded into the rubber frames of the first pole pieces. According to the utility model, two times of rubber frame forming on one pole piece are not needed, so that the connectivity between the pole pieces is increased, and the conditions that the solid electrolyte layer and the pole pieces deviate relatively and the two adjacent pole pieces are short-circuited are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to solid state battery manufacturing technical field especially relates to a kind of solid state battery cell manufacturing device based on single-face rubber frame forming. BACKGROUND

[0002] Solid state battery is the novel battery of using solid state electrolyte to replace the diaphragm and liquid electrolyte in traditional liquid battery, and solid state lithium battery can use lithium metal anode to replace the graphite or silicon anode in traditional lithium ion battery, and the energy density of lithium metal anode is higher than that of traditional anode, allowing solid state battery to store more energy in the same volume, so that solid state battery is expected to replace liquid battery and be widely used.

[0003] The existing solid state battery production process is not mature, compared with liquid electrolyte which can fully contact with pole piece, the solid state electrolyte layer in solid state battery is difficult to tightly adhere with pole piece, thereby leading to the quality of solid state battery is affected.

[0004] In the related art, to improve the positioning and adhesion effect between the solid state electrolyte layer and the pole piece, and to improve the quality of the solid state battery, a double-sided rubber frame is formed on one of the positive pole piece and the negative pole piece by a forming process, and the other is embedded in the rubber frame, so that the positive pole piece and the negative pole piece are staggered and stacked into a cell, and the cell is subjected to isostatic pressing. Through the enclosing and limiting effect of the rubber frame, the transverse displacement between the positive pole piece and the negative pole piece can be limited, and the solid state electrolyte layer and the pole piece can be tightly adhered. In the traditional rubber frame manufacturing process, a piece of pole piece is sequentially sent to the first forming station, the turning station and the second forming station, and the rubber frame is formed on the two surfaces of the pole piece by the rubber frame forming mechanism. However, the manufacturing method causes the corresponding manufacturing equipment to have a complex structure, occupy a large space, and have a high cost. In addition, the alignment of the two rubber frames located on the two sides of the pole piece cannot be ensured. SUMMARY

[0005] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a solid state battery cell manufacturing device based on single-face rubber frame forming, which does not need to perform rubber frame forming on a pole piece twice, has high rubber frame manufacturing efficiency, thereby can increase the connection effect between the pole pieces in the solid state battery cell, and can avoid the problems that the solid state electrolyte layer of the solid state battery cell is prone to position deviation in the isostatic pressing process, and the edges of the adjacent two pole pieces are prone to bending contact and causing short circuit in the pressing process.

[0006] The utility model embodiment provides a kind of solid state battery cell manufacturing device based on single-face rubber frame forming, comprising:

[0007] The first pole piece conveying mechanism is provided with a forming station;

[0008] The second pole piece conveying mechanism is used for conveying the second pole piece.

[0009] The glue frame forming mechanism is used for manufacturing a glue frame on the surface of the first pole piece, and the thickness of the glue frame is greater than that of the second pole piece.

[0010] The laminating mechanism is used for alternately laminating the second pole piece and the first pole piece with the glue frame.

[0011] According to the solid-state battery cell manufacturing device based on single-face glue frame forming, the glue frame is manufactured on one surface of the first pole piece by the glue frame forming mechanism, and the thickness of the formed glue frame is greater than that of the second pole piece.

[0012] In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-face glue frame forming further comprises:

[0013] The tab glue pasting mechanism is used for manufacturing a tab glue tape at the tab of one of the first pole piece and the second pole piece.

[0014] In some embodiments of the utility model, the tab glue pasting mechanism is arranged on the first pole piece conveying mechanism.

[0015] The first pole piece conveying mechanism sequentially conveys the first pole piece to the glue frame forming mechanism, the glue frame forming mechanism and the laminating mechanism.

[0016] The second pole piece conveying mechanism conveys the second pole piece to the laminating mechanism.

[0017] In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided adhesive frame forming further comprises:

[0018] The drying mechanism is used for drying the first pole piece with the adhesive frame, and is arranged on the first pole piece conveying mechanism and located between the adhesive frame forming mechanism and the laminating mechanism.

[0019] In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided adhesive frame forming further comprises:

[0020] The first cutting mechanism is arranged on the first pole piece conveying mechanism and used for cutting the first pole piece;

[0021] The first cutting mechanism is located upstream of the tab adhesive attaching mechanism;

[0022] Or,

[0023] The first cutting mechanism is located between the tab adhesive attaching mechanism and the adhesive frame forming mechanism;

[0024] Or,

[0025] The first cutting mechanism is located between the adhesive frame forming mechanism and the drying mechanism;

[0026] Or,

[0027] The first cutting mechanism is located between the drying mechanism and the laminating mechanism.

[0028] In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided adhesive frame forming further comprises:

[0029] The defect detection mechanism is used for defect detection and processing of the first pole piece with the adhesive frame, and the NG pole piece is removed.

[0030] In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided adhesive frame forming further comprises:

[0031] The deviation correction mechanism is used for deviation correction processing of the first pole piece.

[0032] In some embodiments of the utility model, the tab adhesive attaching mechanism is arranged on the second pole piece conveying mechanism;

[0033] The first pole piece conveying mechanism sequentially conveys the first pole piece to the adhesive frame forming mechanism and the laminating mechanism;

[0034] The second pole piece conveying mechanism sequentially conveys the second pole piece to the tab adhesive attaching mechanism and the laminating mechanism.

[0035] In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided adhesive frame forming further includes:

[0036] The second tab mechanism is provided with the second pole piece conveying mechanism and is used for cutting the second pole piece;

[0037] The second tab mechanism is located upstream of the tab adhesive attaching mechanism;

[0038] Or,

[0039] The second tab mechanism is located between the tab adhesive attaching mechanism and the lamination mechanism.

[0040] In some embodiments of the utility model, the tab adhesive attaching mechanism includes an adhesive tape unwinding assembly, a release paper winding assembly and a transfer film winding assembly;

[0041] The adhesive tape unwinding assembly is used for unwinding the transfer film, wherein the transfer film is formed with a plurality of tab adhesives 160, and the plurality of tab adhesives are sequentially and spacedly distributed along the extension direction of the transfer film; the transfer film is covered with release paper used for covering the tab adhesives;

[0042] The release paper winding assembly is used for peeling off the release paper from the transfer film and winding, so that the tab adhesives can be transferred to the preset tab of the first pole piece tape at the forming station; the transfer film winding assembly is used for winding the transfer film from which the release paper has been peeled off.

[0043] Other features and advantages of the utility model will be set forth in the subsequent description, and some of them become apparent from the description, or are understood through the implementation of the utility model. The purposes and other advantages of the utility model can be realized and obtained through the structures specially pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 It is one of the structural schematic diagrams of the solid-state battery cell according to the embodiments of the utility model;

[0045] Figure 2 It is the second structural schematic diagram of the solid-state battery cell according to the embodiments of the utility model;

[0046] Figure 3 It is the front view of the solid-state battery cell manufacturing device based on single-sided adhesive frame forming according to the embodiments of the utility model;

[0047] Figure 4 It is the three-dimensional structural schematic diagram of the solid-state battery cell manufacturing device based on single-sided adhesive frame forming according to the embodiments of the utility model;

[0048] Figure 5 is a front view of a solid-state battery cell manufacturing device based on single-sided adhesive frame forming according to another embodiment of the present application;

[0049] Figure 6 is a front view of a solid-state battery cell manufacturing device based on single-sided adhesive frame forming according to another embodiment of the present application;

[0050] Figure 7 is a structural schematic view of a transfer roller of a solid-state battery cell manufacturing device based on single-sided adhesive frame forming according to another embodiment of the present application; wherein, Figure 7 (a) is a side view schematic view of the transfer roller, Figure 7 (b) is an expanded schematic view of the outer circumferential surface of the transfer roller.

[0051] Reference signs:

[0052] 110, first pole piece; 120, solid-state electrolyte layer; 130, adhesive frame; 140, second pole piece; 150, pole tab; 160, pole tab adhesive tape; 200, first unwinding device; 300, adhesive frame forming mechanism; 310, transfer roller; 311, relief portion; 312, avoidance area; 400, drying mechanism; 510, first cutting mechanism; 520, defect detection mechanism; 610, pole piece buffer device; 620, deviation correction mechanism; 630, tension swing lever device; 710, protective film unwinding device; 720, winding device. DETAILED DESCRIPTION

[0053] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0054] In the description of the present application, it should be understood that the features limited as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0055] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] Solid-state batteries are a new type of battery that uses a solid electrolyte to replace the separator and liquid electrolyte in traditional liquid batteries. Solid-state lithium batteries can use a lithium metal anode to replace the graphite or silicon anode in traditional lithium-ion batteries. Compared with traditional anodes, lithium metal anodes have a higher energy density, allowing solid-state batteries to store more energy in the same volume, making solid-state batteries a promising candidate to replace liquid batteries and be widely used.

[0057] The existing solid-state battery manufacturing process is not very mature. Compared with liquid electrolytes that can fully contact the electrodes, the solid electrolyte layer in solid-state batteries is difficult to adhere tightly to the electrodes, which leads to adverse effects on the quality of solid-state batteries.

[0058] In related technologies, to improve the positioning and bonding effect between the solid electrolyte layer and the electrode sheets, thereby improving the quality of solid-state batteries, our company uses a molding process to manufacture a frame on both sides of one of the positive and negative electrode sheets. The other frame is embedded within the frame, allowing the positive and negative electrode sheets to be stacked alternately to form a battery cell. The cell is then subjected to isostatic pressing. The frame's enclosure and limiting effect restricts lateral displacement between the positive and negative electrode sheets and ensures a tight bond between the solid electrolyte layer and the electrode sheets. In traditional frame manufacturing processes, electrode sheets are typically fed sequentially to a first forming station, a flipping station, and a second forming station. A frame forming mechanism then manufactures frames on both surfaces of the electrode sheets. However, this method results in complex equipment structures, large space requirements, and high costs. Furthermore, manufacturing frames on opposite sides of the electrode sheet makes it difficult to ensure the alignment of the two frames located on opposite sides of the electrode sheet.

[0059] To address the aforementioned issues, this invention provides a solid-state battery cell manufacturing apparatus based on single-sided frame molding. Each electrode only requires single-sided frame molding, eliminating the need for two separate frame molding processes on the same electrode. Only one frame molding mechanism is needed to complete the molding process, reducing equipment space requirements. The single-sided frame ensures alignment between the two frames on opposite surfaces of the electrode, and the high manufacturing efficiency enhances the connection between electrodes in the solid-state battery cell. It also prevents positional misalignment between the solid electrolyte layer and the electrode during isostatic pressing, and avoids bending and short-circuiting at the edges of adjacent electrodes during pressurization, thus effectively improving the manufacturing quality of solid-state batteries.

[0060] The following is for reference. Figures 1 to 7 This invention describes a solid-state battery cell manufacturing apparatus based on single-sided adhesive frame molding, according to an embodiment of the present invention.

[0061] like Figures 1 to 3As shown, the solid-state battery cell manufacturing device based on single-sided adhesive frame forming according to the embodiment of the utility model,

[0062] The adhesive frame 130 is formed on one surface of the first pole piece 110 by the adhesive frame forming mechanism 300, and the thickness of the formed adhesive frame 130 is greater than the thickness of the second pole piece 140; therefore, during the stacking process, the second pole piece 140 is completely embedded in the adhesive frame 130 of the first pole piece 110, the adhesive frame 130 can ensure that the solid-state electrolyte layer 120 and the pole piece of the solid-state battery cell do not deviate in position during the isostatic pressing process, improve the connection effect between the solid-state electrolyte layer 120 and the pole piece, and the adhesive frame 130 can support the first pole piece 110, as far as possible to avoid the bending of the first pole piece 110 during the stress process, so as to reduce the probability of deformation of the first pole piece 110; by setting the single-sided adhesive frame 130 on a single surface of the first pole piece 110, it is not necessary to form the adhesive frame on one pole piece twice, which reduces the process flow and the cost of the adhesive frame forming equipment, at the same time, only one adhesive frame forming is required for a single pole piece, the positions of the adhesive frames 130 of the stacked multiple first pole pieces 110 are basically the same, and the relative positions of the adhesive frames 130 and the first pole pieces 110 can be unified, so that the adhesive frames 130 on both sides of the first pole piece 110 after lamination have high alignment.

[0063] It can be understood that the thickness of the adhesive frame 130 is greater than or equal to the thickness of the second pole piece 140, so that the second pole piece 140 can be completely embedded in the adhesive frame 130, the adhesive frame 130 is formed on one surface of the first pole piece 110, and the first pole piece 110 and the second pole piece 140 are alternately stacked, so that a single adhesive frame 130 is formed between the adjacent two first pole pieces 110, that is, compared with the double-sided adhesive frame 130 in the prior art, the single-sided adhesive frame 130 provided on the first pole piece 110 has a larger thickness and can connect the solid-state electrolyte layers located on both sides of the second pole piece 140 and the second pole piece 140, without the need to form adhesive frames 130 on the opposite two surfaces of the first pole piece 110, so that the alignment of the two adhesive frames 130 located on the opposite two surfaces of the pole piece is high.

[0064] The first pole piece 110 and the second pole piece 140 are two pole pieces with opposite polarities, the first pole piece 110 can be a negative pole piece, and the second pole piece 140 can be a positive pole piece, of course, in other embodiments, the first pole piece 110 can be a positive pole piece, and the second pole piece 140 can be a negative pole piece, as long as the polarities of the first pole piece 110 and the second pole piece 140 are opposite, the embodiment of the utility model is not particularly limited. The first pole piece 110 can be a single pole piece in the form of a sheet, or a preset pole piece region in a first pole piece tape.

[0065] The glue frame 130 can be formed on one surface of the first pole piece 110 by coating, screen printing, or pressing.

[0066] The lamination mechanism alternately stacks the first pole piece 110 and the second pole piece 140 in sequence, so that the second pole piece 140 is embedded in the glue frame 130, to improve the positioning accuracy of the solid-state electrolyte layer 120 and the first pole piece 110 and the second pole piece 140. The thickness of the glue frame 130 is greater than the thickness of the second pole piece 140, so that the single-sided glue frame 130 can be manufactured on the first pole piece 110, without the need for secondary manufacturing of the glue frame 130 on the first pole piece 110. Considering that the solid-state electrolyte layer 120 has poor adhesion to the pole piece compared to the liquid-state electrolyte, it is difficult to achieve close adhesion of the solid-state electrolyte layer 120 to the pole piece. A pressing mechanism in the prior art can be added to press the laminated first pole piece 110 and second pole piece 140, to achieve close adhesion of the first pole piece 110, the solid-state electrolyte layer 120, and the second pole piece 140 by pressing, and the glue frame 130 on the first pole piece 110 can limit the lateral displacement of the solid-state electrolyte layer 120 relative to the first pole piece 110 and the second pole piece 140, thereby improving the pressing and adhesion of the solid-state electrolyte layer 120 to the first pole piece 110 and the second pole piece 140, i.e., improving the adhesion of the solid-state electrolyte layer 120 to the positive pole piece and the negative pole piece.

[0067] The lamination mechanism is used to laminate the first pole piece 110 and the second pole piece 140 to form a solid-state battery cell. The lamination mechanism can use existing lamination equipment, which mainly includes a lamination table and a handling robot. The lamination table is provided with a lamination station, and the handling robot includes a vacuum chuck and a mechanical arm. The mechanical arm can drive the vacuum chuck to move and adsorb or release the pole piece. The number of handling robots is two, one of which can apply a vacuum adsorption action to the first pole piece 110 with the solid-state electrolyte layer 120 and the glue frame 130, and the other can apply a vacuum adsorption action to the second pole piece 140. Therefore, the first pole piece 110 and the second pole piece 140 are respectively handled by the two handling robots to the lamination station of the lamination table and stacked in the order of up and down. After the solid-state battery cell is completed by lamination, it can be taken out by manual or unloading robot.

[0068] The second pole piece 140 and the first pole piece 110 with the adhesive frame 130 are sequentially and alternately transported to the laminating mechanism, the laminating mechanism sequentially and alternately laminates the first pole piece 110, the solid-state electrolyte layer 120 and the second pole piece 140, so that the second pole piece 140 is embedded in the adhesive frame 130 of the first pole piece 110, and the solid-state electrolyte layer 120 is embedded in the inner periphery of the adhesive frame 130.

[0069] The solid-state electrolyte layer 120 is embedded in the inner periphery of the adhesive frame 130, and the first pole piece 110 and the adhesive frame 130 can serve as a support matrix for the solid-state electrolyte layer 120, and the processing is relatively simple. Specifically, during the laminating process, the first pole piece 110, the solid-state electrolyte layer 120 and the second pole piece 140 are sequentially laminated, and the solid-state electrolyte layer 120 is embedded in the adhesive frame 130 through pressing.

[0070] Of course, in other embodiments, the solid-state electrolyte layer 120 can be formed on the first pole piece 110, and then the solid-state electrolyte layer 120 on the first pole piece 110 is glued, so that the adhesive frame 130 is formed on the solid-state electrolyte layer 120. In the subsequent lamination step, the first pole piece 110 and the second pole piece 140 are laminated, which realizes the sequential lamination of the first pole piece 110, the solid-state electrolyte layer 120 and the second pole piece 140, and is conducive to reducing the difficulty of the sequential lamination of the first pole piece 110, the solid-state electrolyte layer 120 and the second pole piece 140, so as to meet the manufacturing requirements of the solid-state battery cell. The second pole piece 140 is embedded in the adhesive frame 130 to limit the lateral displacement of the solid-state electrolyte layer 120 relative to the second pole piece 140, so as to improve the pressing and bonding effect of the solid-state electrolyte layer 120 with the positive pole piece and the negative pole piece.

[0071] The first pole piece conveying mechanism is a conventional vacuum belt conveying mechanism, which includes a vacuum negative pressure belt. The first pole piece material belt is arranged on the vacuum negative pressure belt, and the first pole piece material belt is used to convey the first pole piece 110. The vacuum negative pressure belt provides a forming station.

[0072] The solid-state battery cell manufacturing device based on single-sided adhesive frame forming further includes a first unwinding device 200. The first unwinding device 200 is used to unwind the first pole piece 110 material roll to unwind a long first pole piece material belt with a solid-state electrolyte layer 120, which facilitates subsequent adhesive frame 130 coating and curing. Among them, Figure 5 The a direction in the above formula is the conveying direction of the first pole piece material belt.

[0073] It can be understood that the first unwinding device 200 can be a conventional unwinding machine, which mainly includes an unwinding roller and a rotary driving mechanism. The pole piece roll is installed on the unwinding roller, and the rotary driving mechanism can be a motor, which is used to drive the unwinding roller to rotate and continuously unwind the first pole piece material belt.

[0074] Please refer toFigure 5 and Figure 6 In some embodiments, the solid-state battery cell manufacturing device based on single-sided adhesive frame forming further comprises a protective film unwinding device 710 and a winding device 720. The protective film unwinding device 710 is used to unwind the protective film material tape; the winding device 720 is used to wind the first electrode sheet material tape with the adhesive frame 130 and the protective film material tape together to form a coated electrode sheet roll material.

[0075] It can be understood that during the unwinding of the coated electrode sheet roll material, since the protective film material tape is attached to the first electrode sheet material tape, it is necessary to separate the protective film material tape and the first electrode sheet material tape. At this time, the protective film material tape can be wound by the protective film winding mechanism to separate the protective film material tape from the first electrode sheet material tape, facilitating subsequent cutting and stacking of the first electrode sheet material tape with the solid-state electrolyte layer 120 and the adhesive frame 130.

[0076] The protective film unwinding device 710 can use an existing unwinding machine, and the unwinding device 200 can be an existing winding machine. When the protective film unwinding device 710 and the unwinding device 200 are running simultaneously, the first electrode sheet material tape with the solid-state electrolyte layer 120 and the adhesive frame 130 and the unwound protective film material tape can be wound together by the unwinding device 200, thereby completing the winding work of the first electrode sheet material tape. In order to allow the protective film material tape to be smoothly attached to the first electrode sheet material tape, a plurality of rollers can be provided on the unwinding path of the protective film material tape and the winding path of the first electrode sheet material tape.

[0077] It can be understood that during the winding process, the protective film material tape can be attached to the surface of the first electrode sheet material tape with the adhesive frame 130 or without the adhesive frame 130, so that the protective film can play a good separating and protecting role between the inner and outer electrode sheets, avoiding the problem that the first electrode sheet material tape of the inner and outer layers is firmly adhered due to the action of the adhesive frame 130, causing the first electrode sheet material tape to be difficult to separate or even damaged during subsequent unwinding work.

[0078] The second electrode sheet conveying mechanism is an existing vacuum belt conveying mechanism, which includes a vacuum negative pressure belt. The second electrode sheet material tape is arranged on the vacuum negative pressure belt, and the second electrode sheet material tape is used to convey the second electrode sheet 140.

[0079] Of course, the solid-state battery cell manufacturing device based on single-sided adhesive frame forming further comprises a second unwinding device. The second unwinding device is used to unwind the second electrode sheet 140 roll material to unwind a long second electrode sheet material tape, facilitating subsequent pasting of the tab adhesive tape 160 or cutting.

[0080] It is understandable that the second unwinding device can be an existing unwinding machine, whose main structure includes an unwinding roller and a rotary drive mechanism. The electrode roll is mounted on the unwinding roller, and the rotary drive mechanism can be a motor, which is used to drive the unwinding roller to rotate so that the unwinding roller continuously unwinds the second electrode strip.

[0081] The frame forming mechanism 300 includes a screen printing mechanism and a lifting mechanism. The screen printing mechanism is located above the forming station and can move up and down relative to the forming station under the drive of the lifting mechanism, applying adhesive to the first electrode strip on the forming station. When the unwound first electrode strip moves to the forming station, the solid electrolyte layer 120 is positioned vertically opposite the screen printing mechanism. Then, the screen printing mechanism moves downward to print the frame 130 on the upper surface of the first electrode strip.

[0082] The vacuum belt conveyor is located below the screen printing mechanism. When the vacuum belt conveyor is in operation, the vacuum negative pressure belt applies a vacuum adsorption effect to the first electrode strip and moves it, causing the corresponding first electrode 110 to move to the forming station so that the screen printing mechanism can apply adhesive to the first electrode strip. After one adhesive frame 130 is coated, the first electrode strip continues to move under the action of the vacuum negative pressure belt, facilitating the screen printing mechanism to sequentially manufacture multiple adhesive frames 130 in the subsequent parts of the first electrode strip.

[0083] like Figures 6 to 7 As shown, in some other examples, the frame forming mechanism 300 includes a roller transfer mechanism, which includes a transfer roller 310 assembly and a rotary drive assembly. The transfer roller 310 assembly includes two transfer rollers 310 with the same or different diameters, spaced apart to form a coating channel for the passage of the first electrode strip. The coating channel provides a forming station. When the first electrode strip passes through the coating channel, the outer circumferential surfaces of the two transfer rollers 310 contact the opposite surfaces of the first electrode strip. The rotary drive assembly can be a motor, used to drive at least one transfer roller 310 to rotate and apply adhesive to the first electrode strip passing through the coating channel.

[0084] Specifically, the two transfer rollers 310 are arranged vertically opposite each other. The lower transfer roller 310 can effectively support the first electrode strip, while the outer peripheral surface of the upper transfer roller 310 is provided with a raised part 311. As shown in the figure, after the outer peripheral surface of the upper transfer roller 310 is unfolded, the raised part 311 is square in shape, and a square clearance area 312 is formed in the middle of the raised part 311.

[0085] It can be understood that, in the process of rotating the upper transfer roller 310, the gelatinous paste in the upper paste basin flows to the convex part 311 of the transfer roller 310 through the bottom outlet, and when the convex part 311 contacts the upper surface of the first tab material belt, the gelatinous paste is transferred to the first tab material belt to form the gel frame 130. In the process of coating the gel, the avoidance area 312 can provide avoidance for the solid electrolyte layer 120 on the first tab material belt to avoid the convex part 311 from damaging the solid electrolyte layer 120. Through the roller transfer mechanism, the first tab material belt is continuously coated, and the first tab material belt does not need to be paused for coating.

[0086] As shown in Figures 1 to 2 In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided gel frame forming further comprises a tab adhesive attaching mechanism, which is used for manufacturing a tab adhesive tape 160 at the tab 150 of one of the first tab 110 and the second tab 140.

[0087] The tab 150 is an electrical connection part on the tab, which is used for connecting with external circuit; the tab adhesive tape 160 can fix the tab 150 to prevent displacement, bending or damage of the tab 150 during battery assembly and use, and can also avoid short circuit caused by accidental contact of the tab 150 with other parts; by manufacturing the tab adhesive tape 160 at the tab 150 of one of the first tab 110 and the second tab 140 through the tab adhesive attaching mechanism, the tabs 150 of the first tab 110 and the second tab 140 can be isolated by one-time manufacturing of the tab adhesive tape 160, so as to avoid short circuit caused by contact of the tabs 150 of the first tab 110 and the second tab 140 as much as possible; the gel frame 130 is disconnected at the tab 150, which can avoid the gel frame 130 from interfering with the function of the adhesive tape. It should be noted that the tab adhesive tape 160 needs to be arranged on the surface of both sides of the tab 150 to avoid short circuit caused by accidental contact of any surface of the tab 150 with other parts.

[0088] As shown in Figures 3 to 4 In some embodiments of the utility model, the tab adhesive attaching mechanism is arranged on the first tab conveying mechanism; the first tab conveying mechanism sequentially conveys the first tab 110 to the gel frame forming mechanism 300, the gel frame forming mechanism 300 and the lamination mechanism; the second tab conveying mechanism conveys the second tab 140 to the lamination mechanism.

[0089] The tab adhesive pasting mechanism is arranged on the first tab conveying mechanism, can process the first tab 110, and can stack the first tab 110 with the tab adhesive tape 160 and the glue frame 130 and the second tab 140 without the tab adhesive tape and the glue frame, so that the first tab 110 and the second tab 140 are not mixed in the processing process, and the error probability is reduced; the tab adhesive pasting mechanism and the glue frame forming mechanism 300 are used to paste the tab adhesive tape 160 on the first tab 110 and manufacture the glue frame 130, the tab adhesive tape 160 and the glue frame 130 are concentrated on the first tab 110, the processing process of the second tab 140 is simplified, and the overall manufacturing process is clearer and smoother.

[0090] The tab adhesive pasting mechanism can manufacture the tab adhesive tape 160 at the tab 150 of the first tab 110, can manufacture the tab adhesive tape 160 at the preset tab 150 of the first tab material tape, or can convey the tab-shaped first tab 110 through the conveying belt of the prior art and manufacture the tab adhesive tape 160 at the tab 150 of the first tab 110.

[0091] As shown in Figures 5 to 6 In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided glue frame forming further includes a drying mechanism 400, the drying mechanism 400 is used for drying the first tab 110 with the glue frame 130; the drying mechanism 400 is arranged on the first tab conveying mechanism and is located between the glue frame forming mechanism 300 and the stacking mechanism.

[0092] The drying mechanism 400 is a drying mechanism in the prior art, the drying mechanism 400 can dry and solidify the glue frame 130, so that the glue frame 130 is not separated from the first tab 110; after the glue frame 130 is formed on any surface of the first tab 110, the drying mechanism 400 is used to dry the first tab 110 and the glue frame 130 thereon, so that the glue frame 130 is shaped faster, and the forming effect of the glue frame 130 is improved.

[0093] As shown in Figure 4 In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided glue frame forming further includes a first cutting mechanism 510, which is arranged on the first tab conveying mechanism and is used for cutting the first tab 110.

[0094] The first cutting mechanism 510 can be used for cutting the first pole piece 110; a cutting station is arranged on the vacuum negative pressure belt of the first pole piece conveying mechanism, and the first cutting mechanism 510 is arranged at the first cutting station; the first cutting mechanism 510 can also be used for cutting the first pole piece material belt with the glue frame 130 to form a pole piece with a preset piece-shaped pole piece area and the glue frame 130. In another embodiment, the first cutting mechanism 510 can also cut the piece-shaped first pole piece 110 to a size within a set range.

[0095] The first cutting mechanism 510 can adopt an existing pole piece cutting device, which mainly includes a cutting platform, a cutting knife and a linear driving mechanism. The cutting knife is located above the cutting station, and the linear driving mechanism can be a hydraulic cylinder, an air cylinder or the like, which can drive the cutting knife to move in the up-down direction, so that the cutting knife moves downward and cuts the first pole piece material belt into pieces.

[0096] In some embodiments of the utility model, the first cutting mechanism 510 is located upstream of the tab rubber pasting mechanism, the first pole piece 110 is first cut into a piece-shaped first pole piece 110, and then the first pole piece 110 is transferred to the tab rubber pasting mechanism one by one.

[0097] In some embodiments of the utility model, the first cutting mechanism 510 is located between the tab rubber pasting mechanism and the glue frame forming mechanism 300; the first pole piece 110 can be cut into a piece-shaped first pole piece 110 after the tab rubber tape 160 is pasted, and then the first pole piece 110 is transferred to the glue frame forming mechanism 300 one by one.

[0098] In some embodiments of the utility model, the first cutting mechanism 510 is located between the glue frame forming mechanism 300 and the drying mechanism 400; the first pole piece 110 can be cut into a piece-shaped first pole piece 110 after the glue frame 130 is manufactured on the first pole piece 110, and then the glue frame 130 is solidified.

[0099] In some embodiments of the utility model, the first cutting mechanism 510 is located between the drying mechanism 400 and the stacking mechanism; the first pole piece 110 with the glue frame 130 can be cut after the glue frame 130 on the first pole piece 110 is solidified and dried.

[0100] Further, when the first unwinding device 200, the glue frame forming mechanism 300, the drying mechanism 400 and the first cutting mechanism 510 are sequentially arranged along the conveying path of the first pole piece material belt, pole piece buffer devices 610 are respectively arranged between the glue frame forming mechanism 300, the drying mechanism 400 and the first cutting mechanism 510.

[0101] It can be understood that the pole piece buffer device 610 can adopt an existing pole piece buffer mechanism. The pole piece buffer device 610 located between the first unwinding device 200 and the rubber frame forming mechanism 300 can buffer the first pole piece tape to balance the speed difference between the unwinding process and the rubber coating process, maintain the tension of the first pole piece tape during the process of being transported from the first unwinding device 200 to the rubber frame forming mechanism 300, and ensure that the first unwinding device 200 can continuously unwind the first pole piece tape during the rubber coating process, so as to avoid the situation that the first pole piece tape is loose or even torn due to the inconsistent transport speed of the first pole piece tape in the unwinding process and the rubber coating process. Similarly, the pole piece buffer device 610 located between the drying mechanism 400 and the first cutting mechanism 510 can buffer the tape to balance the speed difference between the curing process and the cutting process, and ensure that the rubber coating and curing rhythm and the cutting rhythm do not interfere with each other.

[0102] As shown in Figure 3 In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided rubber frame forming further comprises a defect detection mechanism 520. The defect detection mechanism 520 is used for performing defect detection processing on the first pole piece 110 with the rubber frame 130, and performing rejection processing on the defective pole piece.

[0103] Through the defect detection mechanism 520, the first pole piece 110 and the rubber frame 130 thereon are detected. If a defect is detected in the first pole piece 110, the first pole piece 110 is determined as an NG (Not Good, unqualified) first pole piece 110. Then, the NG first pole piece 110 needs to be transferred to an NG station by a mechanical hand. Of course, an NG magazine or a waste box can be arranged at the NG station to collect the NG first pole piece 110. If the first pole piece 110 is good and has no defect, the first pole piece 110 is determined as qualified and is transferred to a stacking station. The rubber frame 130 on the first pole piece 110 can be captured by a camera module to obtain a captured image of the rubber frame 130. The captured image is compared with a set image to determine whether the forming effect of the rubber frame 130 on the first pole piece 110 is qualified. If the deviation value of the comparison is less than a first set threshold, the corresponding first pole piece 110 is determined as qualified. If the deviation value of the comparison is greater than or equal to a second set threshold, the corresponding first pole piece 110 is determined as unqualified.

[0104] If the rubber frame 130 has a defect, the first pole piece 110 corresponding to the defective rubber frame 130 is rejected, so as to avoid the problem that the first pole piece 110 with a defect participates in the stacking and pressing steps to cause quality defects of the solid-state battery. This is beneficial to improve the manufacturing quality of the solid-state battery cell.

[0105] Similarly, after manufacturing of any surface of the first tab sheet 110 or the second tab sheet 140, a photographing pattern of the tab ear 150 of the first tab sheet 110 or the second tab sheet 140 is obtained by photographing through the camera module, and the photographing pattern is compared with the set pattern, so as to determine whether the tab ear 150 is qualified in the placement effect on the first tab sheet 110.

[0106] The defect detection mechanism 520 can adopt an existing tab defect detection device, and can detect surface defects of the tab, such as side burrs and powder falling. The defect detection mechanism 520 can include a camera module, a first mechanical hand and an NG box. The first mechanical hand and the NG box can be arranged beside the camera module. Moreover, the first mechanical hand can transfer the NG tab from the defect detection station to the NG box. It can be understood that the first mechanical hand can include a vacuum suction plate and a mechanical arm. When the current tab is identified as NG in the defect detection work, the mechanical arm drives the vacuum suction plate to move, and the NG tab on the defect detection station is adsorbed and carried to the NG box, so as to avoid affecting the quality of the solid-state battery cell. The defect detection mechanism 520 is arranged at each defect detection station. The camera module can be a CCD (Charge coupled Device, Charge coupled Device) camera, which can collect images of the tab, so as to detect whether the tab has defects.

[0107] As shown in Figures 5 to 6 In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided adhesive frame forming further includes a deviation correction mechanism 620, and the deviation correction mechanism 620 is used for deviation correction treatment of the first tab sheet 110. The deviation correction mechanism 620 is used for deviation correction treatment of the first tab sheet 110, so that the forming precision of the adhesive frame 130 can be avoided due to the position deviation of the first tab sheet 110. Specifically, the first tab sheet 110 needs to complete the deviation correction process before being transferred to the forming station. The deviation correction mechanism 620 can adopt an existing deviation correction mechanism 620, and the position of the first tab sheet 110 is corrected before gluing.

[0108] In some embodiments of the utility model, the tab ear adhesive attaching mechanism is arranged on the second tab sheet conveying mechanism. The first tab sheet conveying mechanism sequentially conveys the first tab sheet 110 to the adhesive frame forming mechanism 300 and the lamination mechanism. The second tab sheet conveying mechanism sequentially conveys the second tab sheet 140 to the tab ear adhesive attaching mechanism and the lamination mechanism.

[0109] The second pole piece 140 can be a single pole piece in a sheet shape, or a preset pole piece area in a second pole piece tape. After the tab adhesive tape 160 is pasted on the second pole piece 140 by the tab adhesive pasting mechanism, the second pole piece 140 is transferred to the lamination mechanism, and after the rubber frame 130 is manufactured on the first pole piece 110 by the rubber frame forming mechanism 300, the first pole piece 110 is transferred to the lamination mechanism, and the lamination mechanism laminates the second pole piece 140 with the tab adhesive tape 160 and the first pole piece 110 with the rubber frame 130; in this way, the rubber frame 130 and the tab adhesive tape 160 are arranged on different pole pieces, so that the manufacturing process of the rubber frame 130 and the pasting process of the tab adhesive tape 160 can be carried out at the same time, thereby shortening the production time.

[0110] The tab adhesive pasting mechanism can also manufacture the tab adhesive tape 160 at the tab 150 of the preset tab 150 of the second pole piece tape, or can convey the sheet-shaped second pole piece 140 by the conveying belt of the prior art, and manufacture the tab adhesive tape 160 at the tab 150 of the second pole piece 140.

[0111] In some embodiments of the utility model, the solid-state battery cell manufacturing device based on single-sided rubber frame forming further includes a second cutting mechanism, the second cutting mechanism is provided with a second pole piece conveying mechanism and is used for cutting the second pole piece 140.

[0112] The second cutting mechanism is used for cutting the second pole piece 140; the second cutting mechanism is used for cutting the second pole piece tape to form a pole piece with a preset sheet-shaped pole piece area and a rubber frame 130. In another embodiment, the second cutting mechanism can also cut the sheet-shaped second pole piece 140 to a size within a set range.

[0113] The second pole piece tape conveys the second pole piece 140 to the second cutting station, and the second cutting mechanism can adopt an existing pole piece cutting device, which mainly includes a cutting platform, a cutting knife and a linear driving mechanism. The cutting knife is located above the cutting station, and the linear driving mechanism can be a hydraulic cylinder, an air cylinder or the like, which can drive the cutting knife to move in the up-down direction, so that the cutting knife moves downward and cuts the first pole piece tape into pieces.

[0114] In some embodiments, the second cutting mechanism is located upstream of the tab adhesive pasting mechanism; the second pole piece 140 can be cut before the tab adhesive tape 160 is pasted on the second pole piece 140.

[0115] In some embodiments, the second cutting mechanism is located between the tab adhesive pasting mechanism and the lamination mechanism; the second pole piece 140 can be cut after the tab adhesive tape 160 is pasted on the second pole piece 140.

[0116] In some embodiments of the utility model, the tab adhesive pasting mechanism comprises a tape unwinding assembly, a release paper winding assembly and a transmission film winding assembly.

[0117] The tape unwinding assembly is used for unwinding the transmission film, wherein the transmission film is formed with a plurality of tab tapes 160, the plurality of tab tapes 160 are sequentially and spacedly distributed along the extension direction of the transmission film, and the transmission film is covered with release paper for covering the tab tapes 160. The release paper winding assembly is used for peeling off the release paper from the transmission film and winding, so that the tab tapes 160 can be transferred to the preset tab 150 of the first pole piece tape at the forming station. The transmission film winding assembly is used for winding the transmission film from which the release paper has been peeled off.

[0118] The tab adhesive pasting mechanism further comprises a pressing assembly in the prior art, which can transfer the tape to the tab 150 of the first pole piece tape by pressing. The tape unwinding assembly can be an existing unwinder, and the release paper winding assembly and the transmission film winding assembly can be existing winders. The transmission film, the tab tapes 160 and the release paper together form a composite film, the tape unwinding assembly can continuously unwind the composite film, at this time, the release paper winding assembly can peel off the release paper on the composite film, so that the tab tapes 160 on the composite film are in a bare state, so that the tab tapes 160 can be transferred to the tab 150 of the first pole piece tape at the pasting station by pressing, and the transmission film winding assembly can wind the transmission film and separate the transmission film and the tab tapes 160.

[0119] As shown in Figures 5 to 6 Further, in order to ensure that the tension of the first pole piece tape and the tension of the protective film tape during the conveying process meet the requirements, the solid-state battery cell manufacturing device based on the single-sided adhesive frame forming further comprises a tension swing lever device 630.

[0120] Among them, the tension swing lever device 630 is arranged at the nearby position of the unwinding end of the first unwinding mechanism, the tension swing lever device 630 is arranged at the nearby position of the unwinding end of the second unwinding mechanism, the tension swing lever device 630 is arranged at the nearby position of the winding end of the protective film winding device 720, and the tension swing lever device 630 is arranged at the nearby position of the unwinding end of the protective film unwinding device 710. It can be understood that the tension swing lever device 630 can adopt an existing tension swing lever mechanism, which can adjust the tension of the first pole piece tape or the protective film tape, so that their tension meets the requirements.

[0121] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0122] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A solid-state battery cell manufacturing apparatus based on single-sided adhesive frame forming, characterized by, The solid-state battery cell manufacturing device based on single-sided adhesive frame forming includes: A first electrode sheet conveying mechanism for conveying a first electrode sheet (110); an adhesive frame forming station is arranged on the first electrode sheet conveying mechanism; A second electrode sheet conveying mechanism for conveying a second electrode sheet (140); An adhesive frame forming mechanism (300) for manufacturing an adhesive frame (130) on the surface of the first electrode sheet (110), and the thickness of the adhesive frame (130) is greater than the thickness of the second electrode sheet (140); the adhesive frame forming mechanism (300) is arranged above the forming station; A laminating mechanism for alternately laminating the second electrode sheet (140) and the first electrode sheet (110) with the adhesive frame (130) in sequence, so that the second electrode sheet (140) is embedded in the adhesive frame (130) of the first electrode sheet (110).

2. The single-sided tape frame forming-based solid-state battery cell manufacturing apparatus according to claim 1, characterized by, The solid-state battery cell manufacturing device based on single-sided adhesive frame forming further includes: An electrode lug adhesive attaching mechanism for manufacturing an electrode lug adhesive tape (160) at the electrode lug (150) of one of the first electrode sheet (110) and the second electrode sheet (140).

3. The single-sided tape frame forming-based solid-state battery cell manufacturing apparatus according to claim 2, characterized by, The electrode lug adhesive attaching mechanism is arranged on the first electrode sheet conveying mechanism; The first electrode sheet conveying mechanism sequentially conveys the first electrode sheet (110) to the adhesive frame forming mechanism (300), the adhesive frame forming mechanism (300), and the laminating mechanism; The second electrode sheet conveying mechanism conveys the second electrode sheet (140) to the laminating mechanism.

4. The single-sided tape frame forming-based solid-state battery cell manufacturing apparatus according to claim 3, characterized by, The solid-state battery cell manufacturing device based on single-sided adhesive frame forming further includes: A drying mechanism (400) for drying the first electrode sheet (110) with the adhesive frame (130); the drying mechanism (400) is arranged on the first electrode sheet conveying mechanism and located between the adhesive frame forming mechanism (300) and the laminating mechanism.

5. The single-sided tape frame forming-based solid-state battery cell manufacturing apparatus according to claim 4, characterized by, The solid-state battery cell manufacturing device based on single-sided adhesive frame forming further includes: A first cutting mechanism (510) arranged on the first electrode sheet conveying mechanism and used for cutting the first electrode sheet (110); The first cutting mechanism (510) is located upstream of the electrode lug adhesive attaching mechanism; Or, The first cutting mechanism (510) is located between the electrode lug adhesive attaching mechanism and the adhesive frame forming mechanism (300); Or, The first cutting mechanism (510) is located between the adhesive frame forming mechanism (300) and the drying mechanism (400); Or, The first cutting mechanism (510) is located between the drying mechanism (400) and the laminating mechanism.

6. The single-sided tape frame forming-based solid-state battery cell manufacturing apparatus according to claim 1, characterized by, The solid-state battery cell manufacturing device based on single-sided adhesive frame forming further includes: A defect detection mechanism (520) for defect detection of the first electrode sheet (110) with the adhesive frame (130) and for rejecting the NG electrode sheet.

7. The single-sided tape frame forming-based solid-state battery cell manufacturing apparatus according to claim 1, characterized by, The solid-state battery cell manufacturing device based on single-sided adhesive frame forming further includes: A correction mechanism (620) for correcting the first electrode sheet (110).

8. The single-sided tape frame forming-based solid-state battery cell manufacturing apparatus according to claim 2, characterized by, The electrode lug adhesive attaching mechanism is arranged on the second electrode sheet conveying mechanism; The first pole piece conveying mechanism sequentially conveys the first pole piece (110) to the frame forming mechanism (300) and the lamination mechanism; The second pole piece conveying mechanism sequentially conveys the second pole piece (140) to the tab adhesive attaching mechanism and the lamination mechanism.

9. The single-sided tape frame forming-based solid-state battery cell manufacturing apparatus according to claim 8, characterized by, The solid-state battery cell manufacturing device based on the single-sided frame forming further comprises: A second cutting mechanism, which is arranged on the second pole piece conveying mechanism and is used for cutting the second pole piece (140); The second cutting mechanism is located upstream of the tab adhesive attaching mechanism; Or, The second cutting mechanism is located between the tab adhesive attaching mechanism and the lamination mechanism.

10. The single-sided tape frame forming-based solid-state battery cell manufacturing apparatus according to claim 2, characterized by, The tab adhesive attaching mechanism comprises a tape unwinding assembly, a release paper winding assembly, and a conveying film winding assembly; The tape unwinding assembly is used for unwinding the conveying film, wherein the conveying film is formed with a plurality of tab adhesives (160) which are sequentially and spaced apart along the extension direction of the conveying film; the conveying film is covered with release paper for covering the tab adhesives (160); The release paper winding assembly is used for peeling off the release paper from the conveying film and winding it, so that the tab adhesives (160) can be transferred to the preset tab (150) of the first pole piece tape at the forming station; the conveying film winding assembly is used for winding the conveying film from which the release paper has been peeled off.

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