Pole piece transferring device, pole piece manufacturing equipment and solid-state battery production line

Abstract

The utility model discloses a pole piece transferring device, pole piece manufacturing equipment and a solid-state battery production line, and relates to the technical field of solid-state battery manufacturing. The pole piece transferring device comprises a material belt film conveying unit which is configured to be capable of conveying a material belt film in the first direction, a pole piece feeding station, a rubber frame forming station and a pole piece discharging station are sequentially arranged above the material belt film in the first direction, and a plurality of first adsorption holes are formed in the material belt film; the pole piece transferring unit comprises a first clamping and conveying mechanism and a second clamping and conveying mechanism which are arranged in a spaced mode in the first direction, and the first clamping and conveying mechanism and the second clamping and conveying mechanism are both configured to be capable of clamping the material belt film and adsorbing the material belt film and pole pieces located on the material belt film in a vacuum mode; and the pole pieces on the material belt film are sequentially transferred to the rubber frame forming station and the pole piece discharging station from the pole piece feeding station. According to the utility model, the conveying precision of the pole piece in a rubber frame forming process can be improved, so that the forming quality of a rubber frame on the pole piece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-state battery manufacturing, and in particular to a pole piece transfer device, pole piece manufacturing equipment and a solid-state battery production line. Background Art

[0002] Compared with liquid batteries, solid-state batteries use solid electrolytes instead of liquid electrolytes and diaphragms, which makes solid-state batteries have higher energy density and can store more energy in the same volume. At present, the existing solid-state battery production process is not very mature. During the isostatic pressing process, the solid electrolyte membrane and the electrode membrane are prone to offset. At the same time, the edges of the anode membrane and the cathode membrane are prone to bending and contact, resulting in a short circuit. Therefore, it is necessary to coat the pole pieces with a glue frame to improve the adhesion between the pole pieces and prevent the problem of offset and bending contact. However, in the process of coating the pole pieces with glue frames, it is easy for the pole pieces to offset during transportation, resulting in the position of the formed glue frame offset, causing the molding effect of the glue frame to deteriorate, thereby affecting the quality of the solid-state battery cell. Utility Model Content

[0003] 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 pole piece transfer device, pole piece manufacturing equipment, and solid-state battery production line that can improve the conveying accuracy of pole pieces during the plastic frame molding process, thereby improving the plastic frame molding quality on the pole pieces.

[0004] The first embodiment of the present invention provides a pole piece transfer device, which includes:

[0005] A strip film conveying unit is configured to convey the strip film along a first direction, wherein a pole piece loading station, a plastic frame forming station, and a pole piece unloading station are sequentially arranged above the strip film along the first direction, and a plurality of first adsorption holes are formed on the strip film;

[0006] The electrode transfer unit includes a first clamping mechanism and a second clamping mechanism arranged at intervals along a first direction. The first clamping mechanism and the second clamping mechanism are both configured to clamp the material strip film and vacuum-absorb the material strip film and the electrode on the material strip film, so as to transfer the electrode on the material strip film from the electrode loading station to the plastic frame molding station and the electrode unloading station in sequence.

[0007] The electrode transfer device according to the first aspect of the present invention has at least the following beneficial effects: in the process of molding the electrode into a plastic frame, the material strip film conveying unit conveys the material strip film along the first direction, and uses the first clamping mechanism to firmly clamp the portion of the material strip film corresponding to the electrode loading station, and places the electrode from the electrode loading station on the material strip film. At this time, since the material strip film is provided with a first adsorption hole, the first clamping mechanism can exert an adsorption and fixing effect on the material strip film and the electrode thereon, so that the first clamping mechanism can stably convey the material strip film and the electrode from the electrode loading station to the plastic frame molding station so as to manufacture a plastic frame on the electrode, thereby ensuring that the electrode does not shift in position during the transfer process, thereby improving the manufacturing accuracy of the plastic frame; after completing the plastic frame molding work, the first clamping mechanism stably transfers the material strip film and the electrode with the plastic frame to the electrode unloading station.

[0008] By operating the first and second clamping mechanisms in a cross-operational manner, the production of the electrode frame can be completed efficiently. Furthermore, by providing a strip film, contamination of the first and second clamping mechanisms by the frame waste during the frame forming process can be avoided, thereby preventing the next electrode from being contaminated and shifting its position.

[0009] In some embodiments of the present invention, the first clamping mechanism and the second clamping mechanism both include an upper pressure plate, a lower pressure plate and a driving component, the lower pressure plate is provided with a vacuum air path and a plurality of second adsorption holes, the plurality of second adsorption holes are connected to the vacuum air path, and are configured to be able to vacuum adsorb the material strip film and the pole piece located on the material strip film, and the driving component is configured to be able to drive the upper pressure plate and the lower pressure plate close to each other to clamp the material strip film.

[0010] In some embodiments of the present invention, there are two upper pressure plates, and the two upper pressure plates are respectively located on opposite sides of the lower pressure plate in the first direction, and a number of second adsorption holes are located between the two upper pressure plates; and / or, the driving component includes a first linear driving member and a second linear driving member, the first linear driving member is configured to drive the upper pressure plate to move in the up and down directions, and the second linear driving member is configured to drive the lower pressure plate to move in the up and down directions.

[0011] In some embodiments of the present invention, the material strip film has a bearing surface with a width greater than a width of the pole piece.

[0012] In some embodiments of the present invention, the material strip film conveying unit includes an unwinding mechanism and a first rewinding mechanism, the unwinding mechanism is configured to unwind the material strip film, and the first rewinding mechanism is configured to rewind the material strip film.

[0013] In some embodiments of the present invention, the material strip film conveying unit also includes a second winding mechanism, the material strip film is formed with a plurality of rubber frames distributed in sequence along the extension direction of the material strip film, and the material strip film is covered with release paper for covering the rubber frames. The second winding mechanism is configured to peel off and wind up the release paper from the material strip film so that the rubber frame can be transferred to the electrode at the rubber frame forming station.

[0014] The second embodiment of the present invention provides a pole piece manufacturing device, which includes a rubber frame molding device and a pole piece transferring device as described in the first embodiment. The rubber frame molding device is configured to manufacture a rubber frame on a pole piece located at the rubber frame molding station.

[0015] According to the electrode manufacturing equipment of the embodiment of the second aspect of the utility model, there are at least the following beneficial effects: the electrode transfer device smoothly transfers the material strip film and the electrode on the material strip film to the glue frame molding station through vacuum adsorption, ensuring high conveying accuracy of the electrode and the position of the electrode is not easy to shift, so that the glue frame molding device can manufacture the glue frame on the electrode with high precision, ensuring good molding effect of the glue frame, thereby improving the manufacturing quality of the solid-state battery.

[0016] In some embodiments of the present invention, the pole piece manufacturing equipment also includes a pole piece flipping device, and two of the said plastic frame forming device and the said pole piece transferring device are provided and are arranged at intervals along the first direction. The said pole piece flipping device is arranged between the two said pole piece transferring devices and is configured to flip and transfer the pole piece so that the two relative surfaces of the pole piece are formed with the said plastic frame.

[0017] In some embodiments of the present invention, the electrode manufacturing equipment also includes a electrode drying device, which is configured to solidify the glue frame on the electrode; and / or, the electrode manufacturing equipment also includes an appearance inspection device, which is configured to perform appearance inspection on the electrode with a molded glue frame.

[0018] A third embodiment of the present invention provides a solid-state battery production line, which includes the pole piece manufacturing equipment as described in the second embodiment.

[0019] The solid-state battery production line according to the third aspect of the embodiment of the utility model has at least the following beneficial effects: by activating the above-mentioned electrode manufacturing equipment, the rubber frame manufacturing process on the electrode can be completed efficiently and accurately, thereby ensuring excellent adhesion between the electrode sheets, and preventing the solid electrolyte membrane and the electrode membrane from easily offsetting, and the anode membrane and the cathode membrane from easily bending, contacting, and short-circuiting at the edges during the isostatic pressing process, thereby improving the manufacturing quality of solid-state batteries.

[0020] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the pole piece transfer device provided according to an embodiment of the utility model;

[0022] Figure 2 1 is a top view of a pole piece transfer device provided according to an embodiment of the present utility model;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping and conveying mechanism in the pole piece transfer unit provided in an embodiment of the present utility model;

[0024] Figure 4 It is a cross-sectional schematic diagram of a clamping mechanism in a pole piece transfer unit provided according to an embodiment of the present utility model;

[0025] Figure 5 It is a structural schematic diagram of a pole piece manufacturing device provided according to an embodiment of the utility model;

[0026] Figure 6 It is a structural schematic diagram of a pole piece manufacturing device provided according to another embodiment of the present utility model;

[0027] Figure 7 It is a structural schematic diagram of a vacuum belt conveyor device in a pole piece manufacturing device provided according to an embodiment of the present utility model;

[0028] Figure 8 This is a schematic structural diagram of a strip film provided according to an embodiment of the present utility model;

[0029] Figure 9 It is a structural schematic diagram of a battery cell provided according to an embodiment of the present utility model;

[0030] Figure 10 It is a schematic diagram of the working principle of the pole piece transfer device provided according to an embodiment of the utility model.

[0031] Reference numerals: 110, negative electrode sheet; 120, positive electrode sheet; 130, plastic frame; 210, strip film; 211, first adsorption hole; 220, release paper; 230, composite film; 300, electrode sheet transfer unit; 310, clamping mechanism; 311, upper pressing plate; 312, lower pressing plate; 313, second adsorption hole; 314, first lifting seat; 315, second lifting seat; 316, second linear drive member; 317, limit block; 318, support; 319, first linear drive member; 320, base; 400, rubber frame forming device; 510, transfer robot; 520, electrode flipping device; 530, vacuum belt conveyor; 531, conveyor belt; 532, vacuum adsorption hole; 533, driven roller; 534, driving roller; 535, vacuum adsorption box; 610, unwinding mechanism; 620, first rewinding mechanism; 630, second rewinding mechanism; 700, electrode magazine; 810, deviation correction platform; 820, appearance inspection device; 900, electrode drying device. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should 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.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] Solid-state lithium metal battery is a new type of battery that uses solid electrolyte to replace the separator and liquid electrolyte used in traditional lithium-ion batteries, so that the graphite anode or silicon anode in traditional lithium-ion batteries can be replaced by lithium metal anode. The energy density of lithium metal anode is higher than that of traditional anode, allowing the battery to store more energy in the same volume.

[0036] However, the existing solid-state battery production process is immature. Compared with liquid electrolytes that can fully contact the electrode membrane, the solid electrolyte membrane in the solid-state battery is difficult to fit tightly with the electrode membrane, resulting in poor quality of the solid-state battery. To this end, the solid electrolyte membrane and the electrode membrane can be isostatically pressed together by running an isostatic pressing device. However, during the isostatic pressing process, the solid electrolyte membrane and the electrode membrane are easily offset due to the lateral force in the isostatic pressing container, affecting the manufacturing quality of the solid-state battery. In addition, during the isostatic pressing process or during the lamination process, the edges of the anode membrane and the cathode membrane are easily bent and contacted due to the pressing action, resulting in short circuit problems.

[0037] Based on this, it is necessary to coat the pole pieces with a plastic frame to improve the adhesion between the pole pieces, thereby avoiding the problem of offset between the solid electrolyte membrane and the electrode membrane, and the bending contact between the pole pieces. Figure 9 As shown, the surface of the negative electrode sheet is bonded with a solid electrolyte membrane, and the plastic frame is typically in the shape of a square ring. The plastic frame is arranged around the circumference of the negative electrode sheet and encloses the solid electrolyte membrane. The plastic frame is fixedly connected to the surface of the negative electrode sheet. During the lamination process, the positive and negative electrode sheets are stacked in the vertical direction. Moreover, the inner edge of the plastic frame is bonded to the outer edge of the positive electrode sheet. The positive and negative electrode sheets are cross-stacked to form a battery cell. At this time, the positive electrode sheet is located within the area formed by the two negative electrode sheets and the two plastic frames.

[0038] However, in the process of coating the electrode with a plastic frame, it is easy for the electrode to shift in position during transportation, resulting in the position of the plastic frame formed on the electrode shifting, causing the molding effect of the plastic frame to deteriorate, thereby affecting the quality of the solid-state battery cell.

[0039] Based on the above problems, the utility model provides a pole piece transfer device, pole piece manufacturing equipment and solid-state battery production line, which can improve the conveying accuracy of the pole piece in the rubber frame molding process, thereby improving the rubber frame molding quality on the pole piece.

[0040] Reference below Figures 1 to 10 The present invention describes a pole piece transfer device, pole piece manufacturing equipment and a solid-state battery production line provided according to an embodiment of the present invention.

[0041] like Figures 1 to 5 、 Figure 8 and Figure 9 As shown, the electrode transfer device according to the embodiment of the first aspect of the utility model can be applied to electrode manufacturing equipment. The function of the electrode transfer device is to stably transport the electrode, ensure high electrode transport accuracy, and avoid positional displacement of the electrode during the transfer process, so that the molding work of the rubber frame 130 can be completed efficiently and accurately on the surface of the electrode.

[0042] The electrode transfer device has a first direction, a second direction and an up-down direction, wherein the first direction, the second direction and the up-down direction are perpendicular to each other. In this embodiment, it is assumed that the first direction is the left-right direction and the second direction is the front-back direction.

[0043] The structure of the electrode transfer device includes a material strip film conveying unit and an electrode transfer unit 300 .

[0044] The film strip conveying unit is configured to convey a film strip 210 in a first direction. The film strip 210 is formed with a plurality of first adsorption holes 211. In this embodiment, the first adsorption holes 211 are circular holes arranged in an array, with the axes of the first adsorption holes 211 extending in the vertical direction. It is understood that the film strip 210 may be a plastic film such as PET film or PC film. The size, shape, and arrangement of the first adsorption holes 211 can be selected based on actual conditions and are not specifically limited here.

[0045] Furthermore, the strip film 210 has a bearing surface, and the function of the bearing surface is to provide a placement position for the electrode and to provide support. The width of the bearing surface is greater than the width of the electrode. It is understandable that the width direction of the bearing surface of the strip film 210 is the same as the width direction of the electrode. The extension direction of the strip film 210 is the left-right direction, the width direction of the strip film 210 is the front-back direction, the width direction of the electrode is the front-back direction, and the length direction of the electrode is the left-right direction. The width dimension of the bearing surface of the strip film 210 is designed to be larger than the width dimension of the electrode. When the colloid is formed on the upper surface of the electrode by coating or screen printing to form a glue frame 130, even if the colloid overflows to the outside of the electrode, the strip film 210 can receive the overflowed colloid, thereby preventing the surface of the equipment platform such as the electrode transfer unit from being contaminated by the colloid waste, thereby contaminating the next sheet of electrode and causing the position of the electrode to shift.

[0046] Of course, it is not excluded that in other embodiments, the width of the supporting surface of the strip film 210 is equal to the width of the electrode piece.

[0047] A pole piece loading station, a plastic frame forming station, and a pole piece unloading station are provided above the strip film 210, wherein the pole piece loading station, the plastic frame forming station, and the pole piece unloading station are arranged in sequence along the first direction of the strip film 210. It is understandable that after the pole piece is placed on the upper surface of the strip film 210 from the pole piece loading station, the strip film 210 can be moved along the first direction and the pole piece is sent from the pole piece loading station to the plastic frame forming station and the pole piece unloading station in sequence. Since the plastic frame forming station can be equipped with a plastic frame forming device 400, when the pole piece moves to the plastic frame forming station along with the strip film 210, the plastic frame 130 can be manufactured on the pole piece using the plastic frame forming device 400; when the plastic frame 130 manufacturing work is completed, the pole piece moves to the pole piece unloading station along with the strip film 210 so that the pole piece with the plastic frame 130 can be removed manually or by mechanical automation.

[0048] Specifically, the structure of the strip film conveying unit includes an unwinding mechanism 610 and a first rewinding mechanism 620. The unwinding mechanism 610 is configured to unwind the strip film 210, and the first rewinding mechanism 620 is configured to rewind the strip film 210. Through the cooperation of the unwinding mechanism 610 and the first rewinding mechanism 620, the strip film 210 can move along the first direction and pass through the electrode loading station, the plastic frame forming station, and the electrode unloading station in sequence, so that the electrode can be placed on the strip film 210 at the electrode loading station, and the electrode can be removed from the strip film 210 at the electrode unloading station.

[0049] It is understandable that the unwinding mechanism 610 can be an existing unwinding machine, which can continuously release the strip film 210 when the motor drives the unwinding roller. The first winding mechanism 620 can be an existing winding machine, which can continuously wind the strip film 210 when the motor drives the winding roller. In order to ensure that the unwinding speed, the electrode transfer speed and the winding speed are coordinated, a strip buffer device can be added between the unwinding mechanism 610 and the electrode loading station, and between the electrode unloading station and the first winding mechanism 620. The strip buffer device is an existing structure, and those skilled in the art should understand its specific structure and working principle, which will not be described in detail here.

[0050] The structure of the electrode transfer unit 300 includes a clamping mechanism 310 and a base 320. Two clamping mechanisms 310 are provided, and the two clamping mechanisms 310 are arranged on the base 320. In this embodiment, the two clamping mechanisms 310 are respectively configured as a first clamping mechanism and a second clamping mechanism. The first clamping mechanism and the second clamping mechanism are arranged at a certain interval along the first direction, with the first clamping mechanism located on one side of the strip film 210 in the width direction, and the second clamping mechanism located on the other side of the strip film 210 in the width direction, so that the first clamping mechanism and the second clamping mechanism do not interfere with each other during movement.

[0051] Moreover, the first clamping mechanism and the second clamping mechanism are both configured to clamp the material strip film 210 and vacuum absorb the material strip film 210 and the electrode located on the material strip film 210, so as to transfer the electrode on the material strip film 210 from the electrode loading station to the plastic frame molding station and the electrode unloading station in sequence.

[0052] It can be understood that each clamping mechanism 310 can clamp the strip film 210, so that the strip film 210 can move along the first direction under the driving action of the clamping mechanism 310. At the same time, since the strip film 210 is provided with a plurality of first adsorption holes 211, each clamping mechanism 310 can also apply a vacuum adsorption effect to the strip film 210 and the electrode thereon while clamping the strip film 210, so that the strip film 210 and the electrode can remain stable under the transfer action of the clamping mechanism 310 and are not prone to position displacement. Moreover, during the molding process of the rubber frame 130, the electrode remains fixed due to the adsorption and fixing effect, which is conducive to improving the molding accuracy of the rubber frame 130.

[0053] like Figure 10 As shown, Figure 10 (a) is a schematic diagram of the first clamping and conveying mechanism delivering the negative electrode sheet 110 to the plastic frame forming station, and the second clamping and conveying mechanism delivering the negative electrode sheet 110 to the sheet unloading station. Figure 10 (b) is a schematic diagram of the first clamping and conveying mechanism delivering the negative electrode sheet 110 to the plastic frame forming station and the second clamping and conveying mechanism returning to the electrode sheet loading station. Figure 10 (c) is a schematic diagram showing the first clamping mechanism delivering the negative electrode sheet 110 to the sheet unloading station, and the second clamping mechanism delivering the negative electrode sheet 110 to the frame molding station. Both the first and second clamping mechanisms, through the cooperation of the upper pressing plate 311 and the lower pressing plate 312, clamp and secure the strip film 210, while also applying vacuum suction to the strip film 210 and the negative electrode sheet 110 thereon.

[0054] When the first clamping mechanism is located at the electrode loading station and clamps the portion of the strip film 210 corresponding to the electrode loading station, the second clamping mechanism is located at the plastic frame molding station and clamps the portion of the strip film 210 corresponding to the plastic frame molding station; Figure 10 As shown in (a), after the molding of the plastic frame 130 is completed, the second clamping mechanism drives the strip film 210 and the electrode with the plastic frame 130 thereon to be transferred to the electrode unloading station so that the electrode can be removed from the electrode unloading station. At the same time, the first clamping mechanism drives the strip film 210 and the electrode thereon to be transferred to the plastic frame molding station so that the plastic frame 130 can be manufactured on the electrode. Figure 10As shown in (b), when the electrode with the plastic frame 130 is removed from the electrode unloading station, the second clamping mechanism will move in the opposite direction, return to the electrode loading station, and clamp the portion of the strip film 210 corresponding to the electrode loading station. Figure 10 As shown in (c), when the electrode transferred by the first clamping mechanism completes the molding work of the plastic frame 130, the first clamping mechanism will send the material strip film 210 and the electrode with the plastic frame 130 thereon to the electrode unloading station, and the second clamping mechanism will send the material strip film 210 and the electrode thereon from the electrode loading station to the plastic frame molding station.

[0055] By analogy, the first clamping mechanism and the second clamping mechanism can operate crosswise, and take turns to transfer the strip film 210 and the electrode thereon from the electrode loading station to the plastic frame molding station and the electrode unloading station in sequence.

[0056] The structure of the first pinching mechanism is consistent with that of the second pinching mechanism. Specifically, each pinching mechanism 310 includes an upper pressing plate 311, a lower pressing plate 312 and a driving component.

[0057] The lower pressure plate 312 is provided with a vacuum airway and a plurality of second suction holes 313. Each second suction hole 313 extends axially in the vertical direction. The second suction holes 313 can be circular, elongated, or arranged in an array. The plurality of second suction holes 313 are connected to the vacuum airway, which is connected to the vacuum pump via a pipe. Furthermore, the second suction holes 313 are configured to vacuum-hold the strip film 210 and the electrode sheet located thereon.

[0058] It is understandable that the size, shape and arrangement of the second adsorption holes 313 can be set according to actual needs and are not specifically limited here. The lower pressure plate 312 is located on the lower side of the strip film 210. When vacuuming, the second adsorption holes 313 can supply negative pressure airflow, so that the second adsorption holes 313 can apply vacuum adsorption to the strip film 210, so that the strip film 210 is firmly fixed on the lower pressure plate 312, and the second adsorption holes 313 will be connected to the first adsorption holes 211. Then, when the electrode is placed on the strip film 210 from the electrode loading station, the electrode will be subjected to the effect of vacuum adsorption, so that the electrode is fixed on the strip film 210, avoiding the position displacement of the electrode during the transfer process and the molding process of the rubber frame 130, which leads to a decrease in the molding accuracy of the rubber frame 130. When the electrode is transferred to the electrode unloading station, the vacuuming work can be stopped to release the vacuum adsorption effect on the strip film 210 and the electrode.

[0059] In this embodiment, two upper pressing plates 311 are provided, and the length direction of the upper pressing plates 311 extends along the width direction of the material strip film 210. One of the upper pressing plates 311 is located on one side of the lower pressing plate 312 in the first direction, and the other upper pressing plate 311 is located on the opposite side of the lower pressing plate 312 in the first direction. A plurality of second adsorption holes 313 are located between the two upper pressing plates 311. This design allows both ends of the material strip film 210 in the first direction to be clamped by the upper pressing plate 311 and the lower pressing plate 312, and the electrode is located between the two upper pressing plates 311. It can be understood that multiple groups of second adsorption holes 313 can be provided on the lower pressing plate 312, so that multiple electrode pieces can be placed on the material strip film 210 located on the upper surface of the lower pressing plate 312.

[0060] Of course, it is not ruled out that in other embodiments, only one upper pressing plate 311 is provided.

[0061] The driving component is configured to drive the upper pressing plate 311 and the lower pressing plate 312 toward each other to clamp the strip film 210, and to drive the upper pressing plate 311 and the lower pressing plate 312 away from each other to release the strip film 210. Specifically, the driving component includes a first linear driving member 319 and a second linear driving member 316, wherein the output end of the first linear driving member 319 is fixedly connected to one end of the upper pressing plate 311, and the first linear driving member 319 is configured to drive the upper pressing plate 311 to move in the up and down direction, and the output end of the second linear driving member 316 is fixedly connected to one end of the lower pressing plate 312, and the second linear driving member 316 is configured to drive the lower pressing plate 312 to move in the up and down direction. It is understandable that the first linear driving member 319 and the second linear driving member 316 can be linear driving devices such as electric cylinders, hydraulic cylinders, and pneumatic cylinders.

[0062] Through the cooperation of the first linear drive member 319 and the second linear drive member 316, the upper pressure plate 311 and the lower pressure plate 312 can approach each other in the up and down directions to clamp the strip film 210, and fix the strip film 210 and the pole piece through vacuum adsorption, so as to complete the stable transfer of the pole piece; moreover, the upper pressure plate 311 and the lower pressure plate 312 can move away from each other in the up and down directions to release the clamping effect on the strip film 210, and at the same time, release the vacuum adsorption effect on the strip film 210 and the pole piece, so as to complete the unloading of the pole piece.

[0063] In this embodiment, each clamping and conveying mechanism 310 further includes a first lifting seat 314, a second lifting seat 315, and a support 318. The first linear drive 319 and the second linear drive 316 are both telescopic cylinders and are mounted on the support 318, which is in turn mounted on the base 320. The first and second lifting seats 314, 315 are mounted on the support 318 via a slide rail and slider assembly, enabling smooth vertical movement of the first and second lifting seats 314, 315. The movable rod of the first linear drive 319 is fixedly connected to the first lifting seat 314, and the movable rod of the second linear drive 316 is fixedly connected to the second lifting seat 315. The upper end of the first lifting seat 314 is fixedly connected to the end of the upper platen 311 away from the strip film 210, while the upper end of the second lifting seat 315 is fixedly connected to the end of the lower platen 312 away from the strip film 210.

[0064] Furthermore, a limit block 317 is provided at the upper end of the first lifting seat 314, and the number of limit blocks 317 is not limited to one. The limit block 317 is bolted to the first lifting seat 314 and is capable of abutting against the second lifting seat 315. It is understood that the first linear drive 319 drives the first lifting seat 314 and the upper pressure plate 311 downward, while the second linear drive 316 drives the second lifting seat 315 and the lower pressure plate 312 upward. When the upper pressure plate 311 and the lower pressure plate 312 move into position, the limit block 317 abuts against the second lifting seat 315, limiting the position and preventing the upper pressure plate 311 and the lower pressure plate 312 from moving closer and damaging the strip film 210. The height of the limit block 317 relative to the first lifting seat 314 can be adjusted according to the thickness of the strip film 210.

[0065] In some embodiments, as Figure 5 As shown, the material strip film conveying unit further includes a second winding mechanism 630 .

[0066] The surface of the strip film 210 is formed with a plurality of plastic frames 130, which are spaced at regular intervals along the extension direction of the strip film 210. Furthermore, the surface of the strip film 210 is coated with release paper 220, which covers and protects the plastic frames 130. The second rewinding mechanism 630 is configured to peel the release paper 220 from the strip film 210 and rewind it, allowing the plastic frames 130 to be transferred to the electrode at the plastic frame forming station.

[0067] It is understood that the second winding mechanism 630 is an existing winding machine. The material film 210, the plastic frame 130, and the release paper 220 together form the composite film 230. The unwinding mechanism 610 can continuously unwind the composite film 230. At this time, the second winding mechanism 630 can peel off the release paper 220 from the composite film 230, leaving the plastic frame 130 on the composite film 230 in a naked state, so that the plastic frame 130 can be transferred to the lower surface of the electrode by pressing at the plastic frame forming station. The first winding mechanism 620 can rewind the material film 210 and separate the material film 210 and the plastic frame 130. At this time, the plastic frame 130 will avoid the first adsorption holes 211 on the material film 210. When the plastic frame 130 is in an exposed state, the electrode can be placed on the plastic frame 130 from the electrode loading station so that the plastic frame 130 is enclosed along the edge of the electrode, so that the surrounding side of the electrode and the plastic frame 130 can be pressed together by the existing plastic frame 130 pressing mechanism.

[0068] When the electrode transfer device provided in the embodiment of the first aspect of the present invention is used in the molding work of the plastic frame 130 on the electrode, the material strip film conveying unit will convey the material strip film 210 along the first direction to provide support for the electrode and collect colloidal waste. At this time, the sheet-shaped electrode (negative electrode 110) that has been cut can be placed manually or mechanically automated on the part of the material strip film 210 corresponding to the electrode loading station. At this time, at least one surface of the electrode is adhered to a solid electrolyte membrane.

[0069] At the same time, the electrode transfer unit 300 is activated, and the upper pressing plate 311 and the lower pressing plate 312 in the first clamping mechanism are used to firmly clamp the portion of the strip film 210 corresponding to the electrode loading station, so that the strip film 210 in this portion is in a fixed state, so that the electrode can be placed on the strip film 210 from the electrode loading station. At this time, since the strip film 210 is provided with a first adsorption hole 211 and the lower pressing plate 312 is provided with a second adsorption hole 313, the first clamping mechanism can exert a certain adsorption and fixing effect on the strip film 210 and the electrode thereon, so that the first clamping mechanism can stably deliver the strip film 210 and the electrode from the electrode loading station to the plastic frame forming station, so as to manufacture the plastic frame 130 on the electrode. This can improve the conveying accuracy of the electrode, ensure that the electrode does not shift in position during the transfer process, and thus improve the manufacturing accuracy of the plastic frame 130.

[0070] After the molding of the plastic frame 130 is completed, the first clamping mechanism stably transfers the material strip film 210 and the electrode with the plastic frame 130 to the electrode unloading station to complete manual unloading or automatic unloading.

[0071] When the first clamping mechanism transfers the electrode to the plastic frame forming station, the second clamping mechanism moves to the electrode loading station and clamps the strip film 210 located there, applying vacuum suction to the strip film 210 and the electrode thereon. When the first clamping mechanism transfers the electrode, with the plastic frame 130 formed on it, to the electrode unloading station, the second clamping mechanism transfers the electrode to the plastic frame forming station to form the plastic frame 130 on the electrode.

[0072] By operating the first and second clamping mechanisms in a cross-operational manner, the manufacturing of the electrode frame 130 can be completed efficiently and accurately. Furthermore, the provision of the strip film 210 can prevent the first and second clamping mechanisms from being contaminated by waste material from the frame 130 during the molding process, thereby preventing the next electrode from being contaminated and shifting its position.

[0073] like Figures 1 to 10 As shown, the pole piece manufacturing equipment according to the embodiment of the second aspect of the present utility model can complete the work of manufacturing the rubber frame 130 on the surface of the pole piece.

[0074] The structure of the electrode manufacturing equipment includes a plastic frame forming device 400 and a pole piece transfer device as described in the first embodiment. The plastic frame forming device 400 is located above the pole piece transfer device and is configured to manufacture a plastic frame 130 on a pole piece located at a plastic frame forming station. The pole piece transfer device can stably deliver the strip film 210 and the pole piece thereon to the plastic frame forming station, ensuring the accurate positioning of the pole piece at the plastic frame forming station, thereby improving the molding accuracy of the plastic frame 130 on the pole piece.

[0075] It is understood that in some examples, the plastic frame forming device 400 can be a screen printing mechanism or a dispensing and coating mechanism, which can produce the plastic frame 130 on the upper surface of the pole piece. In other examples, the plastic frame forming device 400 can be a hot pressing mechanism, which can produce the plastic frame 130 on the lower surface of the pole piece. In this case, the plastic frame 130 is formed on the surface of the strip film 210, and the plastic frame 130 on the strip film 210 is transferred to the lower surface of the pole piece through a hot pressing process.

[0076] In some embodiments, as Figure 6As shown, the electrode manufacturing equipment also includes a electrode flipping device 520. The plastic frame forming device 400 and the electrode transfer device are arranged in a one-to-one correspondence. Two plastic frame forming devices 400 are provided, and the two plastic frame forming devices 400 are spaced apart along the first direction. Two electrode transfer devices are also provided, and the two electrode transfer devices are spaced apart along the first direction. The electrode flipping device 520 is provided between the two electrode transfer devices and is configured to flip and transfer the electrode so that the plastic frame 130 is formed on both opposing surfaces of the electrode.

[0077] It is understandable that the pole piece flipping device 520 may include a manipulator and a vacuum suction cup, which adsorbs the pole piece through the vacuum suction cup, and controls the movement of the vacuum suction cup through the manipulator, so that the vacuum suction cup can drive the pole piece to flip 180 degrees, so that the upper surface of the pole piece is flipped downward. The manipulator may include a rotary cylinder and a two-dimensional linear module, wherein the rotary cylinder is arranged at the output end of the two-dimensional linear module, and the output end of the rotary cylinder is connected to the vacuum suction cup. The rotary cylinder is used to drive the vacuum suction cup to drive the pole piece to flip 180 degrees, and the two-dimensional linear module can drive the rotary cylinder, the vacuum suction cup and the pole piece to move in the first direction and the up and down directions respectively.

[0078] In order to achieve the formation of a plastic frame 130 on both sides (i.e., side A and side B) of the electrode, the first plastic frame forming device 400 is first used to complete the work of forming the plastic frame 130 on the A side of the electrode. The first electrode transfer device transfers the electrode to the first electrode unloading station. At this time, the electrode flipping device 520 can transfer the electrode with the plastic frame 130 formed on the A side from the first electrode unloading station to the second electrode loading station and complete the flipping of the electrode. Then, the second electrode transfer device transfers the electrode to the second plastic frame forming station, allowing the second plastic frame forming device 400 to manufacture the plastic frame 130 on the B side of the electrode. The second electrode transfer device sends the electrode with the plastic frame 130 on both sides to the second electrode unloading station.

[0079] In the electrode manufacturing equipment provided in the embodiment of the second aspect of the present utility model, the electrode transfer device smoothly transfers the material strip film 210 and the electrode on the material strip film 210 to the glue frame molding station through vacuum adsorption, ensuring high conveying accuracy of the electrode and the position of the electrode is not easily offset, so that the glue frame molding device 400 can manufacture the glue frame 130 on the electrode with high precision, ensuring good molding effect of the glue frame 130, thereby improving the manufacturing quality of the solid-state battery.

[0080] In some embodiments, as Figure 6As shown, the electrode manufacturing equipment also includes an electrode drying device 900. The electrode drying device 900 is configured to cure the plastic frame 130 on the electrode. After the plastic frame 130 is formed, it needs to be cured. In this case, the electrode drying device 900 can cure and dry the plastic frame 130 on the electrode using infrared heating to prevent deformation.

[0081] It can be understood that, in some examples, the electrode drying device 900 is set at the electrode unloading station, and after the electrode is dried, the electrode at the electrode unloading station can be transferred.

[0082] In other examples, a transfer robot 510 is provided above the electrode unloading station, and a vacuum belt conveyor 530 is provided on the side of the electrode unloading station away from the rubber frame molding station. The electrode at the electrode unloading station is transferred to the vacuum belt conveyor 530 by the transfer robot 510, and the electrode drying device 900 is provided above the vacuum belt conveyor 530 and can dry the electrode on the vacuum belt conveyor 530.

[0083] The transfer robot 510 may be a robot device with a vacuum suction cup, which can perform adsorption and fixation on the electrode. Figure 7 As shown, the vacuum belt conveyor 530 includes a conveyor belt 531, a driven roller 533, a vacuum adsorption box 535, and a drive roller 534. The vacuum adsorption box 535 has a vacuum adsorption chamber that can be connected to a vacuum pump via a pipeline. The vacuum adsorption box 535 is provided with adsorption holes. Rotatable driven rollers 533 are provided on both sides of the vacuum adsorption box 535 in a first direction. The drive roller 534 is provided below the vacuum adsorption box 535 and is driven to rotate by a rotating drive member such as a motor. The conveyor belt 531 is wound between the drive roller 534 and the two driven rollers 533. The surface of the conveyor belt 531 is provided with multiple vacuum adsorption holes 532. Driven by the driving roller 534, the conveying belt 531 can not only convey the electrode along the first direction, but also, since the vacuum adsorption chamber, the adsorption pores and the vacuum adsorption holes 532 are connected, the electrode can be firmly fixed on the conveying belt 531 with the help of vacuum adsorption, thereby ensuring that the electrode is conveyed with high accuracy and is not prone to positional displacement.

[0084] Further, such as Figure 6 As shown, the electrode manufacturing equipment further includes an appearance inspection device 820. The appearance inspection device 820 is configured to perform appearance inspection on the electrode formed with the plastic frame 130.

[0085] It is understood that the appearance inspection device 820 can be an existing visual recognition system that can collect image data of the electrode through the camera in the visual recognition system. By performing image recognition processing and analysis on the image data, it is determined whether the molding effect of the electrode frame 130 is poor and whether there are any defects in the appearance of the electrode; if so, the electrode is transferred to the NG station. In the case where the electrode drying device 900 and the vacuum belt conveyor 530 are provided, the appearance inspection device 820 can be installed above the vacuum belt conveyor 530.

[0086] In a specific embodiment, Figure 6 As shown, the electrode manufacturing equipment includes an electrode magazine 700, a transfer robot 510, a correction platform 810, a plastic frame forming device 400, an appearance inspection device 820, an electrode flipping device 520, an electrode drying device 900, a vacuum belt conveyor 530, and the electrode transfer device of the first embodiment. In this embodiment, the electrode moves from left to right and undergoes multiple processing steps to complete the double-sided molding of the electrode with a plastic frame 130.

[0087] There are two electrode magazines 700, which can stack multiple electrodes in the vertical direction. A transfer robot 510 is set above one of the electrode magazines 700. The transfer robot 510 can transfer the electrode pieces in the electrode magazine 700 one by one to the correction platform 810, and adjust the position of the electrode pieces through the correction platform 810 to complete the position correction of the electrode pieces. A transfer robot 510 is set above the correction platform 810. After completing the correction work, the transfer robot 510 transfers the electrode pieces to the first electrode loading station and places the electrode pieces on the material strip film 210.

[0088] There are two of each of the rubber frame forming device 400, the electrode transfer device, the electrode drying device 900, the appearance inspection device 820 and the vacuum belt conveyor 530. First, through the cooperation of the first rubber frame forming device 400 and the first electrode transfer device, a rubber frame 130 is formed on the A surface of the electrode. A transfer robot 510 is provided above the first electrode unloading station, and the transfer robot 510 can transfer the electrode located at the first electrode unloading station to the first vacuum belt conveyor 530. In the process of conveying the electrode by the vacuum belt conveyor 530, the appearance inspection of the electrode can be carried out by the first appearance inspection device 820, and the rubber frame 130 just manufactured on the electrode can be cured and dried by the first electrode drying device 900.

[0089] A transfer robot 510 is provided above the first vacuum belt conveyor 530, and the transfer robot 510 transfers the electrode from the vacuum belt conveyor 530 to the second electrode loading station. Then, through the cooperation of the second rubber frame forming device 400 and the second electrode transfer device, a rubber frame 130 is formed on the B surface of the electrode. A transfer robot 510 is also provided above the second electrode unloading station, and the transfer robot 510 can transfer the electrode located at the second electrode unloading station to the second vacuum belt conveyor 530. In the process of conveying the electrode by the vacuum belt conveyor 530, the second appearance inspection device 820 is used to perform an appearance inspection on the electrode, and the second electrode drying device 900 is used to perform a curing treatment on the rubber frame 130 just formed on the electrode.

[0090] A transfer robot 510 is also provided above the second vacuum belt conveyor 530. The transfer robot can transfer the electrodes with the plastic frame 130 on both sides from the vacuum belt conveyor 530 to the second electrode magazine 700 and stack them for subsequent electrode stacking processing.

[0091] The pole piece formed by the pole piece manufacturing equipment according to the second embodiment of the present invention can produce the following effects after the battery cell is made: during the isostatic pressing process of the battery cell under pressure, the rubber frame 130 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 application process, and can improve the connection effect between the solid electrolyte membrane and the electrode membrane. In addition, since the width of the negative pole piece 110 is greater than the width of the positive pole piece 120, the inner peripheral surface of the rubber frame 130 is in contact with the outer peripheral surface of the positive pole piece 120. Therefore, the rubber frame 130 can provide a certain support effect to the negative pole piece 110, thereby avoiding the problem of bending at the edge of the negative pole piece 110 during the pressurization process, which may cause a contact short circuit.

[0092] like Figures 1 to 10 As shown, the solid-state battery production line according to the third embodiment of the utility model includes the pole piece manufacturing equipment as in the second embodiment.

[0093] It is understandable that the solid-state battery manufacturing process includes multiple processing steps, such as rolling, cutting, rubber frame 130 manufacturing, quality inspection, etc., and each processing step corresponds to corresponding equipment. This embodiment only focuses on the electrode manufacturing equipment in the solid-state battery production line, and especially provides a unique structural design for the electrode transfer device in the electrode manufacturing equipment. It 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 in detail here.

[0094] In the solid-state battery production process, by activating the above-mentioned electrode manufacturing equipment, the manufacturing process of the rubber frame 130 on the electrode can be completed efficiently and accurately, thereby ensuring excellent adhesion between the electrode sheets, and preventing the solid electrolyte membrane and the electrode membrane from easily offsetting, and the anode membrane and the cathode membrane from easily bending and contacting at the edges, and short circuiting during the isostatic pressing process, thereby improving the manufacturing quality of solid-state batteries.

[0095] Throughout this specification, reference to terms such as "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 that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0096] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. The pole piece transfer device is characterized in that: include: a material strip film conveying unit configured to convey the material strip film (210) along a first direction, wherein a pole piece loading station, a plastic frame forming station, and a pole piece unloading station are sequentially provided above the material strip film (210) along the first direction, and the material strip film (210) is formed with a plurality of first adsorption holes (211); The electrode transfer unit (300) comprises a first clamping mechanism and a second clamping mechanism arranged at intervals along a first direction, wherein the first clamping mechanism and the second clamping mechanism are both configured to clamp the material strip film (210) and vacuum-absorb the material strip film (210) and the electrode on the material strip film (210) so as to sequentially transfer the electrode on the material strip film (210) from the electrode loading station to the plastic frame molding station and the electrode unloading station.

2. The pole piece transfer device according to claim 1, characterized in that: The first clamping mechanism and the second clamping mechanism both include an upper pressing plate (311), a lower pressing plate (312) and a driving component, the lower pressing plate (312) is provided with a vacuum air path and a plurality of second adsorption holes (313), the plurality of second adsorption holes (313) are connected to the vacuum air path, and are configured to vacuum adsorb the material strip film (210) and the pole piece located on the material strip film (210), and the driving component is configured to drive the upper pressing plate (311) and the lower pressing plate (312) to approach each other to clamp the material strip film (210).

3. The pole piece transfer device according to claim 2, characterized in that: There are two upper pressing plates (311), and the two upper pressing plates (311) are respectively located on opposite sides of the lower pressing plate (312) in the first direction, and a plurality of the second adsorption holes (313) are located between the two upper pressing plates (311); and / or, the driving component includes a first linear driving member (319) and a second linear driving member (316), and the first linear driving member (319) is configured to drive the upper pressing plate (311) to move in the up and down directions, and the second linear driving member (316) is configured to drive the lower pressing plate (312) to move in the up and down directions.

4. The pole piece transfer device according to claim 1, characterized in that: The material strip film (210) has a bearing surface with a width greater than that of the pole piece.

5. The pole piece transfer device according to claim 1, characterized in that: The material strip film conveying unit comprises an unwinding mechanism (610) and a first rewinding mechanism (620), wherein the unwinding mechanism (610) is configured to unwind the material strip film (210), and the first rewinding mechanism (620) is configured to rewind the material strip film (210).

6. The pole piece transfer device according to claim 5, characterized in that: The strip film conveying unit also includes a second winding mechanism (630), the strip film (210) is formed with a plurality of glue frames (130) spaced in sequence along the extension direction of the strip film (210), and the strip film (210) is covered with a release paper (220) for covering the glue frame (130), and the second winding mechanism (630) is configured to peel and wind the release paper (220) from the strip film (210) so that the glue frame (130) can be transferred to the electrode at the glue frame forming station.

7. Pole piece manufacturing equipment, characterized in that, It comprises a plastic frame forming device (400) and a pole piece transferring device according to any one of claims 1 to 6, wherein the plastic frame forming device (400) is configured to manufacture a plastic frame (130) on a pole piece located at the plastic frame forming station.

8. The pole piece manufacturing equipment according to claim 7, characterized in that: It also includes a pole piece flipping device (520), the said plastic frame forming device (400) and the said pole piece transfer device are each provided with two and are both spaced apart along the first direction, the said pole piece flipping device (520) is provided between the two said pole piece transfer devices, and is configured to flip and transfer the pole piece so that the said plastic frame (130) is formed on both opposite surfaces of the pole piece.

9. The pole piece manufacturing equipment according to claim 7 or 8, characterized in that: The invention also includes a pole piece drying device (900), wherein the pole piece drying device (900) is configured to solidify the plastic frame (130) on the pole piece; and / or, further includes an appearance inspection device (820), wherein the appearance inspection device (820) is configured to perform appearance inspection on the pole piece formed with the plastic frame (130).

10. Solid-state battery production line, characterized in that, It comprises the pole piece manufacturing equipment as described in any one of claims 7 to 9.

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