Solid-state battery cutting and stacking all-in-one machine

Abstract

The utility model discloses a solid-state battery cutting and stacking all-in-one machine, and relates to the technical field of solid-state battery manufacturing. The solid-state battery cutting and stacking all-in-one machine comprises an unwinding device, a gluing device, a curing device, a cutting device and a stacking device which are sequentially arranged along a conveying path of a first pole piece coil; wherein the unwinding device is configured to be capable of unwinding a first pole piece material roll, and a solid electrolyte layer is arranged on the surface of the first pole piece material roll; the gluing device is configured to be capable of gluing the first pole piece material roll so as to form a glue frame surrounding the solid electrolyte layer; the curing device is configured to dry and cure the rubber frame; the cutting device is configured to cut the first pole piece material roll so as to form a first pole piece with a solid electrolyte layer and a rubber frame; the lamination device is configured to be capable of laminating the first pole piece and the second pole piece so as to form a solid-state battery cell. The device is high in battery cell manufacturing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-state battery manufacturing, in particular to a solid-state battery cutting and stacking integrated machine. Background Art

[0002] Solid-state lithium batteries are composed of positive electrode materials, negative electrode materials and solid electrolytes. They have the advantages of small size, high energy density, high flexibility and safe use. Therefore, solid-state lithium batteries are regarded as ideal batteries for electric vehicles. At present, the production process of solid-state batteries is still immature, and it is impossible to process the electrode sheet rolls with a solid electrolyte layer on the surface to directly manufacture battery cells, resulting in low efficiency in battery cell manufacturing. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a solid-state battery cutting and stacking machine with high battery cell manufacturing efficiency.

[0004] The embodiment of the utility model provides a solid-state battery cutting and stacking machine, which comprises an unwinding device, a gluing device, a curing device, a cutting device and a stacking device which are sequentially arranged along the conveying path of the first electrode sheet roll;

[0005] The unwinding device is configured to unwind the first pole sheet roll, and a solid electrolyte layer is provided on the surface of the first pole sheet roll;

[0006] The glue coating device is configured to coat the first electrode sheet roll with glue to form a glue frame surrounding the solid electrolyte layer;

[0007] The curing device is configured to dry and cure the glue frame;

[0008] The cutting device is configured to cut the first pole sheet roll to form a first pole sheet with a solid electrolyte layer and a rubber frame;

[0009] The stacking device is configured to stack the first pole sheet and the second pole sheet to form a solid-state battery cell.

[0010] The solid-state battery cutting and stacking machine according to the embodiment of the utility model has at least the following beneficial effects: the first pole piece roll with the solid electrolyte layer on the surface is unwound by the unwinding device, and then the surface of the first pole piece roll is coated with glue by the gluing device to manufacture a plurality of glue frames, and then the glue frames on the first pole piece roll are dried by the curing device, so that the cured glue frames can surround and limit the solid electrolyte layer on the first pole piece roll, thereby improving the connection effect between the solid electrolyte layer and the first pole piece, and at the same time, can also play the role of supporting and separating the first pole piece of the solid-state battery cell. , making it easier for two adjacent first pole sheets to overlap tightly and avoid short circuit failure caused by contact between two adjacent first pole sheets; then, the first pole sheet roll is cut by a cutting device to form pieces of first pole sheets with solid electrolyte layers and glue frames, so as to be stacked with the second pole sheets; after completing the cutting of the first pole sheets, the stacking device can stack the first pole sheets and the second pole sheets to directly form a solid-state battery cell, without the need to roll up the pole sheets coated with glue frames and transfer them to the existing stacking machine for cutting and stacking, thereby simplifying the structure of the solid-state battery cell manufacturing equipment and improving the cell preparation efficiency.

[0011] In some embodiments of the present invention, the gluing device includes a gluing station and a screen printing mechanism. The screen printing mechanism is located above the gluing station and is configured to move up and down relative to the gluing station and to glue the first pole piece roll on the gluing station.

[0012] In some embodiments of the utility model, the solid-state battery cutting and stacking machine also includes a first cache device, and the unwinding device, the first cache device and the gluing device are arranged in sequence along the conveying path of the first pole sheet material roll, and the first cache device is configured to cache the first pole sheet material roll located between the unwinding device and the gluing device.

[0013] In some embodiments of the utility model, the solid-state battery cutting and stacking machine also includes a second cache device, and the curing device, the second cache device and the cutting device are arranged in sequence along the conveying path of the first electrode sheet roll, and the second cache device is configured to cache the first electrode sheet roll located between the curing device and the cutting device.

[0014] In some embodiments of the utility model, the solid-state battery cutting and stacking machine also includes a defect detection device, a first manipulator and an NG material box, the cutting device, the defect detection device and the stacking device are arranged in sequence along the conveying path of the first pole sheet material roll, the defect detection device is provided with a first inspection station, and is configured to perform defect detection on the first pole sheet on the first inspection station, and the first manipulator is configured to transfer the NG first pole sheet from the first inspection station to the NG material box.

[0015] In some embodiments of the utility model, two first inspection stations are provided and are arranged in sequence along the conveying path of the first pole sheet roll, and the defect detection device includes two visual inspection mechanisms, one of which is located above one of the first inspection stations, and the other visual inspection mechanism is located below the other first inspection station.

[0016] In some embodiments of the utility model, the solid-state battery cutting and stacking machine also includes a positioning device, a second manipulator and a chamfering and cutting device, the cutting device, the positioning device and the chamfering and cutting device are arranged in sequence along the conveying path of the first pole sheet material roll, the positioning device is provided with a positioning station, and is configured to be able to position the first pole sheet on the positioning station, the chamfering and cutting device is provided with a cutting station, and is configured to be able to cut the first pole sheet on the cutting station so that the first pole sheet is formed with a chamfered pole ear, and the second manipulator is configured to be able to transfer the first pole sheet from the positioning station to the cutting station.

[0017] In some embodiments of the present invention, the solid-state battery cutting and stacking machine also includes a size detection device, and the cutting device, the size detection device and the positioning device are arranged in sequence along the conveying path of the first electrode sheet roll. The size detection device is provided with a second detection station and is configured to be able to take photos and detect the size of the first electrode sheet on the second detection station to determine whether the first electrode sheet is a good product.

[0018] In some embodiments of the utility model, the solid-state battery cutting and stacking machine also includes a dust removal device, and the chamfering and cutting device, the dust removal device and the defect detection device are arranged in sequence along the conveying path of the first pole sheet roll, and the dust removal device is configured to clean the surface of the first pole sheet.

[0019] In some embodiments of the utility model, there are two gluing devices, namely the first gluing device and the second gluing device, and there are two curing devices, namely the first curing device and the second curing device. The first gluing device, the first curing device, the second gluing device and the second curing device are arranged in sequence along the conveying path of the first pole piece roll. The first gluing device is configured to be able to apply glue to one of the surfaces of the first pole piece roll, and the second gluing device is configured to be able to apply glue to another surface of the first pole piece roll.

[0020] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a solid-state battery cutting and stacking machine provided according to an embodiment of the utility model.

[0022] Figure numerals: 100, unwinding device; 200, gluing device; 300, curing device; 410, cutting device; 420, chamfering and cutting device; 500, stacking device; 610, first cache device; 620, second cache device; 700, size detection device; 800, dust removal device; 910, first visual detection mechanism; 920, second visual detection mechanism. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it is to be understood that a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] At present, in the field of battery technology, it is mainly divided into liquid batteries and solid-state batteries. Among them, the structure of liquid batteries is composed of positive electrode materials, negative electrode materials, electrolytes and diaphragms. Compared with liquid batteries, solid-state batteries are energy storage devices that do not contain liquid in their structure and all materials exist in solid form. Specifically, the structure of solid-state batteries is composed of positive electrode materials, negative electrode materials and solid electrolytes.

[0027] Since solid-state lithium metal batteries use solid electrolytes instead of the diaphragms and liquid electrolytes used in traditional lithium-ion batteries, the graphite or silicon anodes in traditional lithium-ion batteries can be replaced by lithium metal anodes. Compared with traditional anodes, lithium metal anodes have a higher energy density, allowing batteries to store more energy in the same volume. Therefore, solid-state lithium metal batteries have the advantages of small size, high energy density, high flexibility, and safe use, and are regarded as ideal batteries for electric vehicles.

[0028] However, the current production process of solid-state batteries is still immature, and it is impossible to process the electrode sheet rolls with a solid electrolyte layer formed on the surface to directly manufacture battery cells, resulting in low efficiency in battery cell manufacturing.

[0029] Based on the above problems, the utility model provides a solid-state battery cutting and stacking machine, which can sequentially perform processes such as glue frame coating and curing, cutting into sheets and stacking on electrode sheet rolls with solid electrolyte layers, thereby directly processing to form solid-state battery cells. This can simplify the structure of solid-state battery cell manufacturing equipment, reduce the space occupied in the workshop, and improve the manufacturing efficiency of solid-state battery cells.

[0030] Reference below Figure 1 A solid-state battery cutting and stacking machine provided according to an embodiment of the utility model is described.

[0031] like Figure 1 As shown, the solid-state battery cutting and stacking machine according to an embodiment of the utility model is used to process the first pole sheet roll, wherein a solid electrolyte layer is provided on the surface of the first pole sheet roll.

[0032] It can be understood that the solid-state battery cell is composed of a first pole piece, a solid electrolyte layer and a second pole piece, the solid electrolyte layer is fixed on the surface of the first pole piece, the size of the first pole piece is larger than the size of the second pole piece, and the first pole piece and the second pole piece are in sheet shape, so after the first pole piece and the second pole piece are stacked, the solid electrolyte layer is located between the first pole piece and the second pole piece, and contacts the first pole piece and the second pole piece respectively. In this embodiment, the first pole piece is a negative pole piece, and the second pole piece is a positive pole piece.

[0033] The structure of the solid-state battery cutting and stacking machine includes an unwinding device 100, a gluing device 200, a curing device 300, a cutting device 410 and a laminating device 500. The unwinding device 100, the gluing device 200, the curing device 300, the cutting device 410 and the laminating device 500 are sequentially arranged along the conveying path of the first electrode sheet roll.

[0034] In this embodiment, the unwinding device 100 , the gluing device 200 , the curing device 300 , the cutting device 410 , and the laminating device 500 are arranged from left to right at certain intervals.

[0035] The unwinding device 100 is configured to unwind the first pole piece roll. It is understandable that the unwinding device 100 is a prior art, and its main structure includes an unwinding shaft and a rotating drive mechanism. The first pole piece roll is placed on the unwinding shaft. The rotating drive mechanism can be a motor, which is used to drive the unwinding shaft to rotate, so that the unwinding shaft continuously unwinds the first pole piece roll, and the head end of the first pole piece roll moves to the gluing device 200, the curing device 300 and the cutting device 410 in sequence.

[0036] The glue coating device 200 is configured to coat the first pole sheet roll with glue to form a glue frame surrounding the solid electrolyte layer, and the glue frame is fixed on the surface of the first pole sheet roll.

[0037] It can be understood that the first pole piece roll has manufactured multiple solid electrolyte layers before unwinding, and the multiple solid electrolyte layers are arranged at uniform intervals along the length direction of the first pole piece roll. Through the operation of the glue coating device 200, multiple glue frames can be manufactured on the surface of the first pole piece roll, and the multiple glue frames are arranged at intervals along the length direction of the first pole piece roll. Each glue frame is arranged corresponding to each solid electrolyte layer, and the inner peripheral surface of the glue frame is in contact with the outer peripheral surface of the solid electrolyte layer, that is, the glue frame surrounds the solid electrolyte layer. Looking in the direction perpendicular to the surface of the first pole piece roll (in this embodiment, in the up and down direction), if the solid electrolyte layer is square, the glue frame is square.

[0038] The thickness of the rubber frame is greater than the thickness of the solid electrolyte layer, and the rubber frame is made of a non-conductive colloid material. After the first pole piece and the second pole piece are stacked in the up-down direction, the rubber frame of the upper first pole piece and the rubber frame of the lower first pole piece are arranged opposite to each other and in contact with each other. At this time, the second pole piece is located between the two upper and lower adjacent first pole pieces. Specifically, the second pole piece is located in the space surrounded by the rubber frames on the upper and lower sides and the solid electrolyte layers on the upper and lower sides. The setting of the rubber frame can support and separate the first pole pieces on the upper and lower sides and insulate them, thereby preventing the first pole pieces on the upper and lower sides from being bent at the edges and contacting each other during the pressing process, thereby causing a short circuit.

[0039] In a specific embodiment, the gluing device 200 includes a gluing station and a screen printing mechanism. The screen printing mechanism is located above the gluing station, and the screen printing mechanism is configured to move up and down relative to the gluing station and to apply glue to the first pole piece roll on the gluing station. The unrolled first pole piece roll will move to the gluing station, and when the solid electrolyte layer and the screen printing mechanism are arranged relative to each other up and down, the screen printing mechanism moves downward and prints a glue frame surrounding the solid electrolyte layer on the upper surface of the first pole piece roll.

[0040] It can be understood that the gluing device 200 includes a vacuum belt conveying mechanism, which is located below the screen printing mechanism. The vacuum belt conveying mechanism includes a vacuum negative pressure belt, and the vacuum negative pressure belt provides a gluing station. When the vacuum belt conveying mechanism is in operation, the vacuum negative pressure belt can apply vacuum adsorption to the first pole piece roll, and drive the first pole piece roll to move, prompting the part of the first pole piece roll with the solid electrolyte layer to move to the gluing station, so that the screen printing mechanism can perform gluing on the first pole piece roll. After manufacturing a glue frame, the first pole piece roll continues to move under the action of the vacuum negative pressure belt, which facilitates the screen printing mechanism to manufacture glue frames on the subsequent parts of the first pole piece roll. When the vacuum negative pressure belt drives the first pole piece roll to move, the unwinding device 100 will continue to unwind.

[0041] The vacuum belt conveyor mechanism and the screen printing mechanism are both existing technologies. This embodiment does not make any improvements to their structures. Those skilled in the art should understand their specific structures and working principles, so they will not be described in detail here.

[0042] The curing device 300 is configured to dry and cure the glue frame. After the first electrode sheet roll is coated with glue, the manufactured glue frame needs to be cured to make the structure of the glue frame more stable and strong, so that the glue frame can play a good supporting and separating and insulating role in the solid-state battery cell.

[0043] It is understandable that the curing of the glue frame can be completed by drying curing, radiation curing, etc. When the glue frame can be cured under infrared or ultraviolet irradiation, radiation curing equipment can be selected; if the glue frame can be cured under convection hot air environment, drying curing equipment can be selected.

[0044] In some examples, the curing device 300 can use existing drying equipment to accelerate the drying speed of the rubber frame, so that the rubber frame is completely dry, thereby completing the curing of the rubber frame. Multiple rollers can be arranged inside and outside the curing device 300, and the first pole piece material is wound on the rollers, so that the rollers support and change the direction of the first pole piece material roll, so that the first pole piece material roll can pass through the curing device 300 smoothly and stably, and the rubber frame on the first pole piece material roll can be cured.

[0045] The cutting device 410 is configured to cut the first pole piece roll to form a first pole piece with a solid electrolyte layer and a rubber frame. After the rubber frame is manufactured, the surface of the first pole piece roll has both a solid electrolyte layer and a rubber frame. Then, the first pole piece roll can be cut to form first pole pieces of uniform specifications, which is convenient for the subsequent lamination of the first pole piece and the second pole piece.

[0046] It can be understood that the cutting device 410 is provided with a cutting station. The cutting device 410 is a prior art, and its main structure includes a cutting platform, a cutting knife and a linear drive mechanism. The cutting platform provides a cutting station, and the cutting knife is located above the cutting station. The linear drive mechanism can be a hydraulic cylinder, a cylinder, etc., and its function is to drive the cutting knife to move in the up and down directions, so that the cutting knife moves downward and cuts the first pole piece roll to form a first pole piece. At this time, the upper surface of the first pole piece has a solid electrolyte layer and a rubber frame arranged around the solid electrolyte layer.

[0047] In a specific example, the cutting platform can be a vacuum negative pressure platform, which can apply vacuum adsorption to the first pole piece roll on its upper surface. During cutting, the first pole piece roll remains stable under the adsorption and fixation of the cutting platform, ensuring a good cutting effect. After cutting, the cutting platform breaks the vacuum, and the first pole piece leaves the cutting station under the push of the subsequent part of the first pole piece roll. A conveying device can be provided between the cutting platform and the curing device 300 to deliver the first pole piece roll to the cutting station.

[0048] In addition, a measuring device for measuring the length of the first pole sheet roll may be provided at the conveying device. The measuring device is a prior art, and its main structure includes a roller and an encoder matched with the roller. The roller rotates under the friction drive of the first pole sheet roll, and the rotation angle of the roller is measured by the encoder. In this way, the moving distance of the first pole sheet roll can be obtained, that is, the length data of the first pole sheet roll on the cutting station can be obtained, and then the position of the first pole sheet roll on the cutting station can be controlled to ensure that the cutting effect of the cutting device 410 is good and the size of each first pole sheet cut is consistent.

[0049] The stacking device 500 is configured to stack the first pole sheet and the second pole sheet to form a solid-state battery cell.

[0050] It can be understood that the stacking device 500 is a prior art, and its main structure includes a stacking platform and a handling robot. The stacking platform is provided with a stacking station. The handling robot includes a vacuum suction cup. There are two handling robots, one of which can apply vacuum adsorption to the first pole piece, and the other handling robot can apply vacuum adsorption to the second pole piece. Therefore, the first pole piece and the second pole piece can be respectively transported to the stacking station of the stacking platform by two handling robots, and stacked in the order of upper and lower. Finally, the stacked solid-state battery cells are unloaded manually or by a unloading robot.

[0051] One of the handling robots can move to the cutting device 410, vacuum absorb the first electrode sheet leaving the cutting station and transfer it to the lamination station. Another handling robot moves to the loading station where the second electrode sheet is placed, vacuum absorbs the second electrode sheet on the loading station and transfers it to the lamination station. Of course, an unwinding mechanism and a cutting mechanism can also be set for the second electrode sheet to cut the second electrode sheet roll into pieces of second electrode sheets, and stack them with the first electrode sheet.

[0052] During the operation of the solid-state battery cutting and stacking machine provided in the embodiment of the utility model, the first pole sheet roll with the solid electrolyte layer on the surface is first unwound by the unwinding device 100; then, the surface of the first pole sheet roll is coated with a glue frame by the gluing device 200 to manufacture a plurality of glue frames on the surface of the first pole sheet roll, and then the glue frame on the first pole sheet roll is dried by the curing device 300 to ensure that the cured glue frame can surround and limit the solid electrolyte layer on the first pole sheet roll, thereby improving the connection effect between the solid electrolyte layer and the first pole sheet, and at the same time, it can also play a supporting and separating insulating role on the first pole sheet of the solid-state battery cell, so that any two adjacent first pole sheets in the solid-state battery cell are more easily overlapped and can avoid short circuit failure caused by contact between two adjacent first pole sheets.

[0053] Next, the first pole sheet roll is cut by the cutting device 410 to form first pole sheets with solid electrolyte layers and rubber frames, so as to facilitate the subsequent lamination of the first pole sheet and the second pole sheet. After the first pole sheet is cut, the first pole sheet and the second pole sheet can be stacked by the lamination device 500 to directly form a solid-state battery cell.

[0054] The embodiment of the utility model adopts the above-mentioned structural design, which can directly process the first electrode sheet roll with a solid electrolyte layer coated on the surface, and stack it with the second electrode sheet to form a solid-state battery cell. There is no need to roll up the electrode sheet coated with a glue frame and transfer it to the existing stacking machine for cutting and stacking, thereby simplifying the structure of the solid-state battery cell manufacturing equipment and improving the efficiency of cell preparation.

[0055] In some embodiments, Figure 1 As shown, the solid-state battery cutting and stacking machine also includes a first buffer device 610. The unwinding device 100, the first buffer device 610 and the glue coating device 200 are sequentially arranged along the conveying path of the first electrode sheet roll, and the first buffer device 610 is configured to cache the first electrode sheet roll located between the unwinding device 100 and the glue coating device 200.

[0056] It can be understood that the first buffer device 610 is an existing electrode sheet buffer device. This embodiment does not improve the structure of the first buffer device 610. Those skilled in the art should understand its specific structure and working principle, which will not be described in detail here. The first buffer device 610 can adjust the tension and cache the first electrode sheet roll, balance the speed difference between the unwinding process and the gluing process, maintain the tension of the first electrode sheet roll during the process of being transported from the unwinding device 100 to the gluing device 200, and ensure that the unwinding device 100 can continue to operate during the gluing process to unwind the first electrode sheet roll, thereby avoiding the first electrode sheet roll from being loosened or torn due to the different conveying speeds of the first electrode sheet roll in the unwinding process and the gluing process.

[0057] Further, such as Figure 1 As shown, the solid-state battery cutting and stacking machine also includes a second buffer device 620. The curing device 300, the second buffer device 620 and the cutting device 410 are sequentially arranged along the conveying path of the first electrode sheet roll, and the second buffer device 620 is configured to cache the first electrode sheet roll between the curing device 300 and the cutting device 410.

[0058] It is understandable that the structure of the second buffer device 620 can be the same as that of the first buffer device 610. The second buffer device 620 can balance the speed difference between the curing process and the cutting process, maintain the tension of the first electrode sheet roll during the process of being transported from the curing device 300 to the cutting device 410, and ensure that the rhythm (i.e., speed) of the gluing process does not interfere with the rhythm of the cutting process.

[0059] Of course, a deviation correction device may be provided on the conveying path of the first pole sheet stock roll, and the deviation correction device may correct the deviation of the first pole sheet stock roll.

[0060] In some embodiments, Figure 1 As shown, the solid-state battery cutting and stacking machine also includes a defect detection device, a first robot and an NG material box.

[0061] Among them, the cutting device 410, the defect detection device and the laminating device 500 are sequentially arranged along the conveying path of the first electrode sheet roll. The defect detection device is provided with a first detection station, and the defect detection device is configured to perform defect detection on the first electrode sheet on the first detection station, so as to screen each first electrode sheet, thereby identifying and distinguishing qualified products from unqualified products, so as to facilitate the subsequent first manipulator to remove the NG (i.e. NOT GOOD, unqualified) first electrode sheet, so as to stack the first electrode sheet that meets the requirements with the second electrode sheet.

[0062] It is understandable that the defect detection device can adopt an existing electrode defect detection device, which can detect surface defects of the cut first electrode, such as side burrs, powder loss, etc. A conveying device such as a belt conveyor or a handling robot can be provided between the cutting device 410 and the first inspection station to transfer the cut first electrode to the first inspection station.

[0063] The first manipulator and the NG material box can be arranged beside the first inspection station. Moreover, the first manipulator is configured to transfer the NG first pole piece from the first inspection station to the NG material box. It can be understood that the structure of the first manipulator may include a vacuum suction cup and a robotic arm. The robotic arm may be a multi-axis robotic arm or a linear motion module of two dimensions or above. When the current first pole piece is identified as unqualified during the defect detection work, the robotic arm will drive the vacuum suction cup to move, so that the vacuum suction cup adsorbs the NG first pole piece on the first inspection station and transports it to the NG material box to avoid the NG first pole piece and the second pole piece from overlapping and processing unqualified solid-state battery cells.

[0064] In a specific embodiment, two first inspection stations are provided, and the two first inspection stations are arranged in sequence along the conveying path of the first pole piece roll. The defect detection device includes two visual inspection mechanisms, and the two visual inspection mechanisms are respectively a first visual inspection mechanism 910 and a second visual inspection mechanism 920. The first visual inspection mechanism 910 and the second visual inspection mechanism 920 can be existing CCD (Charge coupled Device) cameras, which can capture the image of the first pole piece so as to detect whether the first pole piece has defects.

[0065] One of the visual inspection mechanisms is located above one of the first inspection stations, and the visual inspection mechanism can take a picture of the upper surface of the first pole piece on the first inspection station, and detect whether the upper surface and side of the first pole piece have defects. Another visual inspection mechanism is located below another first inspection station, and the visual inspection mechanism can take a picture of the lower surface of the first pole piece on the first inspection station, and detect whether the lower surface and side of the first pole piece have defects.

[0066] It can be understood that in some examples, the defect detection device includes a belt conveyor mechanism, a suction cup robot and a position detector. Two first inspection stations are arranged on the belt conveyor mechanism. After the first pole piece is transferred from the cutting station to the belt conveyor mechanism, the first pole piece is first moved to one of the first inspection stations. At this time, a position detector such as a photoelectric switch can be used to detect the presence of the first pole piece at the first inspection station. Then, the visual inspection mechanism located above performs defect detection on the upper surface and side of the first pole piece.

[0067] Next, the first pole piece moves to the next first inspection station. At this time, another position detector is used to detect the presence of the first pole piece at the first inspection station. Then, the first pole piece is sucked and moved upward by the suction cup manipulator, so that the first pole piece leaves the conveying plane of the belt conveyor mechanism. Since the belt conveyor mechanism is a double-belt conveyor, the visual inspection mechanism located below can perform defect detection on the lower surface and the other side of the first pole piece.

[0068] In some embodiments, Figure 1 As shown, the solid-state battery cutting and stacking machine also includes a positioning device, a second robot and a chamfering and cutting device 420.

[0069] Among them, the cutting device 410, the positioning device and the chamfering cutting device 420 are arranged in sequence along the conveying path of the first pole piece roll. The positioning device is provided with a positioning station, and the positioning device is configured to position the first pole piece on the positioning station. After positioning, it is convenient to use the chamfering cutting device 420 to accurately cut the first pole piece. It can be understood that the positioning device is a prior art and can take pictures and position the first pole piece on the positioning station. The positioning device may include a positioning table and a plurality of CCD cameras. The positioning table is provided with a positioning station. The plurality of CCD cameras can take pictures of the first pole piece located at the positioning station, and determine the position of the first pole piece at the positioning station through the existing visual recognition technology.

[0070] The chamfering and cutting device 420 is provided with a cutting station, and the chamfering and cutting device 420 is configured to cut the first pole piece on the cutting station so that the first pole piece is formed with a chamfered pole ear. The chamfer on the pole ear can be a rounded angle or a flat angle. The second manipulator is configured to transfer the first pole piece from the positioning station to the cutting station.

[0071] It is understandable that the chamfering and cutting device 420 adopts the existing pole tab chamfering forming equipment, which mainly includes a chamfering forming mold, and the first pole piece is punched with high precision by the chamfering forming mold to complete the pole tab chamfering forming.

[0072] The second manipulator may include a vacuum adsorption plate and a multi-axis manipulator. The multi-axis manipulator can drive the vacuum adsorption plate to move and adjust the position of the vacuum adsorption plate according to the position of the first pole piece determined by the positioning device, so that the vacuum adsorption plate can accurately adsorb the first pole piece located on the positioning station, so as to accurately transfer the first pole piece to the cutting station, and perform precise cutting processing on the first pole piece through the chamfering cutting device 420, so that each first pole piece has a chamfered pole ear, and ensure that the specifications of each first pole piece are consistent, thereby ensuring the quality of the solid-state battery cell.

[0073] Further, such as Figure 1 As shown, the solid-state battery cutting and stacking machine also includes a size detection device 700. The cutting device 410, the size detection device 700 and the positioning device are sequentially arranged along the conveying path of the first electrode sheet roll. The size detection device 700 is provided with a second detection station, and the size detection device 700 is configured to be able to take a photo of the size of the first electrode sheet on the second detection station to determine whether the first electrode sheet is a good product.

[0074] It is understandable that the size detection device 700 includes a CCD camera, and the size detection device 700 can take a picture of the first pole piece on the second detection station, collect the image of the first pole piece, and calculate the size of the first pole piece through existing image recognition and processing technology, and judge whether the size of the first pole piece after cutting meets the requirements, so as to screen out the first pole piece as a good product. If the size of the first pole piece does not meet the requirements, the first pole piece needs to be removed. At this time, the first manipulator can be used to transfer the first pole piece from the second detection station to the NG material box, or the first manipulator can be used to move the first pole piece to the NG material box when the first pole piece moves to the first detection station.

[0075] Of course, a rejection device may also be provided at the second inspection station, the rejection device including a rejection robot and a waste box. When the size of the first pole piece at the second inspection station is identified as unqualified, the rejection robot vacuum absorbs the first pole piece and transfers it to the waste box.

[0076] In this embodiment, in order to reduce manufacturing costs and save space, the size detection device 700 and the positioning device share the same CCD camera, and the first detection station and the second detection station are located at the same place. After the CCD camera captures the image of the first pole piece, the size and position data of the first pole piece can be obtained, and first determine whether the size of the first pole piece is qualified. If the size of the first pole piece is qualified, the second manipulator accurately adjusts the position of the first pole piece on the cutting station according to the position data.

[0077] Further, such as Figure 1 As shown, the solid-state battery cutting and stacking machine also includes a dust removal device 800. The chamfering and cutting device 420, the dust removal device 800 and the defect detection device are sequentially arranged along the conveying path of the first pole sheet roll. The dust removal device 800 is configured to clean the surface of the first pole sheet.

[0078] It is understandable that the dust removal device 800 can remove dust particles on the surface of the first pole piece by air blowing or by brush cleaning, so as to avoid dust particles affecting the accuracy of subsequent defect detection and causing an increase in the waste of the first pole piece. After the chamfering and cutting work is completed, the first pole piece is transferred from the cutting station to the belt conveyor, and the dust removal device 800 can clean the first pole piece on the belt conveyor. After the cleaning process is completed, the first pole piece is transferred to the first inspection station for defect detection.

[0079] It is understandable that the first pole piece can be transferred between various workstations by using a handling robot.

[0080] In some embodiments, the glue coating device 200 and the curing device 300 are each provided, and the glue coating process and the glue frame curing are performed only on one surface of the first electrode sheet roll, such as the upper surface. In this embodiment, one surface of the first electrode sheet roll is coated with a solid electrolyte layer.

[0081] In some other embodiments, two gluing devices 200 are provided, and the two gluing devices 200 are respectively the first gluing device and the second gluing device. Two curing devices 300 are provided, and the two curing devices 300 are respectively the first curing device and the second curing device. Moreover, the first gluing device, the first curing device, the second gluing device and the second curing device are sequentially arranged along the conveying path of the first electrode sheet roll.

[0082] The first gluing device is configured to apply glue to one surface of the first pole piece roll, and the first curing device can cure the glue frame on the surface. The second gluing device is configured to apply glue to the other surface of the first pole piece roll, and the second curing device can cure the glue frame on the surface. In this embodiment, both surfaces of the first pole piece roll are coated with a solid electrolyte layer.

[0083] It can be understood that since the upper and lower surfaces of the first electrode sheet roll are provided with solid electrolyte layers, the two glue coating devices 200 and the two curing devices 300 can be used to manufacture glue frames on the upper and lower surfaces of the first electrode sheet roll. When laminating, the second electrode sheets can be placed on both the upper and lower sides of the first electrode sheet, and the solid electrolyte layers on the upper and lower sides of the first electrode sheet are in contact with the two second electrode sheets respectively. Then, the first electrode sheets and the second electrode sheets can be alternately stacked.

[0084] In addition, if the top and bottom pole pieces of the solid-state battery cell are both first pole pieces, the corresponding gluing device 200 can be activated to apply glue on the upper surface of the first pole piece located at the bottom to produce a glue frame, and to apply glue on the bottom surface of the first pole piece located at the top to produce a glue frame. There is no need to produce glue frames on the upper and lower surfaces of the two first pole pieces.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0086] 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 spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. Solid-state battery cutting and stacking machine, characterized in that: It includes an unwinding device, a gluing device, a curing device, a cutting device and a laminating device which are sequentially arranged along the conveying path of the first electrode sheet roll; The unwinding device is configured to unwind the first pole sheet roll, and a solid electrolyte layer is provided on the surface of the first pole sheet roll; The glue coating device is configured to coat the first electrode sheet roll with glue to form a glue frame surrounding the solid electrolyte layer; The curing device is configured to dry and cure the glue frame; The cutting device is configured to cut the first pole sheet roll to form a first pole sheet with a solid electrolyte layer and a rubber frame; The stacking device is configured to stack the first pole sheet and the second pole sheet to form a solid-state battery cell.

2. The solid-state battery cutting and stacking machine according to claim 1, characterized in that: The gluing device comprises a gluing station and a screen printing mechanism. The screen printing mechanism is located above the gluing station and is configured to move up and down relative to the gluing station and to apply glue to the first pole piece roll on the gluing station.

3. The solid-state battery cutting and stacking machine according to claim 2, characterized in that: It also includes a first cache device, wherein the unwinding device, the first cache device and the gluing device are arranged in sequence along the conveying path of the first pole piece stock roll, and the first cache device is configured to cache the first pole piece stock roll located between the unwinding device and the gluing device.

4. The solid-state battery cutting and stacking machine according to claim 3, characterized in that: It also includes a second cache device, wherein the curing device, the second cache device and the cutting device are arranged in sequence along the conveying path of the first pole piece roll, and the second cache device is configured to cache the first pole piece roll located between the curing device and the cutting device.

5. The solid-state battery cutting and stacking machine according to claim 1, characterized in that: It also includes a defect detection device, a first robot and an NG material box. The cutting device, the defect detection device and the stacking device are arranged in sequence along the conveying path of the first electrode sheet roll. The defect detection device is provided with a first inspection station and is configured to perform defect detection on the first electrode sheet on the first inspection station. The first robot is configured to transfer the first electrode sheet with a defect detection result of NG from the first inspection station to the NG material box.

6. The solid-state battery cutting and stacking machine according to claim 5, characterized in that: There are two first inspection stations, which are arranged in sequence along the conveying path of the first pole piece roll. The defect detection device includes two visual inspection mechanisms, one of which is located above one of the first inspection stations, and the other visual inspection mechanism is located below the other first inspection station.

7. The solid-state battery cutting and stacking machine according to claim 6, characterized in that: It also includes a positioning device, a second robot and a chamfering and cutting device, wherein the cutting device, the positioning device and the chamfering and cutting device are arranged in sequence along the conveying path of the first pole piece roll, the positioning device is provided with a positioning station, and is configured to be able to position the first pole piece on the positioning station, the chamfering and cutting device is provided with a cutting station, and is configured to be able to cut the first pole piece on the cutting station so that the first pole piece is formed with a chamfered pole ear, and the second robot is configured to be able to transfer the first pole piece from the positioning station to the cutting station.

8. The solid-state battery cutting and stacking machine according to claim 7, characterized in that: It also includes a size detection device. The cutting device, the size detection device and the positioning device are arranged in sequence along the conveying path of the first electrode sheet roll. The size detection device is provided with a second detection station and is configured to be able to take photos and detect the size of the first electrode sheet on the second detection station to determine whether the first electrode sheet is a good product.

9. The solid-state battery cutting and stacking machine according to claim 7, characterized in that: It also includes a dust removal device. The chamfering and cutting device, the dust removal device and the defect detection device are arranged in sequence along the conveying path of the first pole piece roll, and the dust removal device is configured to clean the surface of the first pole piece.

10. The solid-state battery cutting and stacking machine according to any one of claims 1 to 9, characterized in that: The two gluing devices are provided, namely the first gluing device and the second gluing device, and the two curing devices are provided, namely the first curing device and the second curing device. The first gluing device, the first curing device, the second gluing device and the second curing device are arranged in sequence along the conveying path of the first pole piece roll. The first gluing device is configured to be able to apply glue to one surface of the first pole piece roll, and the second gluing device is configured to be able to apply glue to another surface of the first pole piece roll.

Images