Solid-state battery pole piece material roll manufacturing equipment

Abstract

The utility model discloses solid-state battery pole piece material roll manufacturing equipment, and relates to the technical field of solid-state battery manufacturing. The solid-state battery pole piece material roll manufacturing equipment comprises a pole piece unwinding device, a pole piece gluing device, a colloid curing device and a winding unit which are sequentially arranged along a pole piece conveying path, wherein the pole piece unwinding device is configured to be capable of unwinding a pole piece with a solid electrolyte layer; the pole piece gluing device is configured to be capable of carrying out glue coating on the surface of the pole piece; the colloid curing device is configured to be capable of curing the colloid on the pole piece; the winding unit comprises a diaphragm unwinding device and a pole piece winding device, the diaphragm unwinding device is configured to be capable of unwinding a diaphragm, and the pole piece winding device is configured to be capable of winding the diaphragm and a pole piece with colloid. According to the utility model, the fitting degree between the pole pieces in the lamination process can be improved, and the problem that the adjacent pole pieces are adhered due to colloid in the winding process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-state battery manufacturing, and in particular to a solid-state battery pole sheet material roll manufacturing device. Background Art

[0002] Solid-state batteries use solid electrolytes to replace electrolytes. They have the advantages of high energy density, high safety performance and long cycle life. They can be used in electric vehicles, mobile phones and other fields to improve endurance.

[0003] At present, the production process of solid-state batteries is still immature. It is difficult to ensure high fit between pole pieces when the prepared pole piece rolls are cut, laminated or wound with other pole pieces. If a colloid is coated on the pole piece to improve the fit, the colloid on the pole piece will stick to the adjacent pole piece during the winding process, making the pole piece roll unable to be used normally. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a solid-state battery pole sheet material roll manufacturing device, which can improve the fit between pole sheets in the lamination process and avoid the problem of adjacent pole sheets being adhered to each other due to colloid during the winding process.

[0005] The embodiment of the utility model provides a solid-state battery pole sheet material roll manufacturing device, which includes a pole sheet unwinding device, a pole sheet glue coating device, a colloid curing device and a winding unit which are sequentially arranged along the pole sheet conveying path;

[0006] Wherein, the pole piece unwinding device is configured to be able to unwind the pole piece with the solid electrolyte layer;

[0007] The pole piece glue coating device is configured to coat the surface of the pole piece with colloid;

[0008] The colloid curing device is configured to cure the colloid on the electrode piece;

[0009] The winding unit comprises a diaphragm unwinding device and a pole piece winding device, wherein the diaphragm unwinding device is configured to unwind the diaphragm, and the pole piece winding device is configured to wind up the diaphragm and the pole piece with colloid.

[0010] The solid-state battery pole piece material roll manufacturing equipment according to the embodiment of the utility model has at least the following beneficial effects: the pole piece unwinding device works to unwind the pole piece with a solid electrolyte layer on the surface, and in the process of the pole piece moving along its conveying path, the pole piece surface is firstly coated with glue by the pole piece gluing device, so that a glue frame can be manufactured on the surface of the pole piece, and then the glue frame on the pole piece is cured by the colloid curing device to accelerate the drying and forming speed of the glue frame, so as to form a pole piece with a solid electrolyte layer and a glue frame, so that the long pole piece just manufactured can be subsequently wound up by the winding unit; while the pole piece winding device is working, the diaphragm unwinding device unwinds the diaphragm, allowing the diaphragm to enter the pole piece winding device together with the pole piece.

[0011] Since the diaphragm and the electrode are rolled up together during the electrode rolling process, the diaphragm can isolate the adjacent electrode sheets inside and outside, and play a good protective role. Therefore, it can avoid the situation in which the adjacent electrode sheets inside and outside are stuck together due to the presence of the colloid during the rolling process, resulting in the electrode sheet material roll with the colloid being unable to be unwound and used normally; moreover, in the stacking or winding compounding process, the action of the colloid ensures a high degree of fit between adjacent electrode sheets.

[0012] In some embodiments of the utility model, the solid-state battery pole piece material roll manufacturing equipment also includes a defect detection device and a marking device, the colloid curing device, the defect detection device, the marking device and the winding unit are arranged in sequence along the pole piece conveying path, the defect detection device is configured to perform defect detection on the pole piece, and the marking device is configured to mark the pole piece according to the defect detection result.

[0013] In some embodiments of the utility model, two of the electrode gluing devices and two of the colloid curing devices are provided, one of the electrode gluing devices is configured to apply glue to one surface of the electrode, and the other electrode gluing device is configured to apply glue to the other relative surface of the electrode, and all of the electrode gluing devices and all of the colloid curing devices are alternately arranged in sequence along the conveying path of the electrode.

[0014] In some embodiments of the present invention, the defect detection device includes a first image collector and a second image collector, the first image collector is configured to capture an image of one surface of the pole piece, and the second image collector is configured to capture an image of another surface of the pole piece.

[0015] In some embodiments of the present invention, the first image collector, the second image collector, the marking device and the winding unit are arranged in sequence along the conveying path of the pole piece.

[0016] In some embodiments of the utility model, the first image collector is provided between the two electrode gluing devices along the electrode conveying path, and the second image collector, the marking device and the winding unit are arranged in sequence along the electrode conveying path.

[0017] In some embodiments of the present invention, the solid-state battery pole piece roll manufacturing equipment further includes a position detection device, which is configured to detect the position of the pole ear of the pole piece, and the position detection device is provided between the pole piece unwinding device and the pole piece gluing device along the pole piece conveying path;

[0018] And / or, the pole piece glue coating device is also configured to perform colloid coating around the solid electrolyte layer on the pole piece.

[0019] In some embodiments of the present invention, the pole piece gluing device comprises a transfer roller assembly, and the transfer roller assembly is provided with a gluing channel for the pole piece to pass through.

[0020] In some embodiments of the utility model, the electrode gluing device includes a gluing platform and a screen printing mechanism, the screen printing mechanism is located above the gluing platform, and the screen printing mechanism is configured to move up and down relative to the gluing platform and to glue the electrode located on the gluing platform.

[0021] In some embodiments of the utility model, the solid-state battery pole piece stock roll manufacturing equipment also includes a pole piece cache mechanism, which is arranged between the pole piece unwinding device and the pole piece gluing device along the pole piece conveying path; and / or, the pole piece cache mechanism is arranged between the colloid curing device and the winding unit along the pole piece conveying path.

[0022] 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

[0023] Figure 1 It is a structural schematic diagram of a solid-state battery pole sheet roll manufacturing device provided according to the first embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a solid-state battery pole sheet roll manufacturing device provided according to the second embodiment of the utility model;

[0025] Figure 3 It is a structural schematic diagram of a transfer roller in a gluing device provided in Embodiment 1 of the utility model; wherein, Figure 3(a) is a side view of the transfer roller, Figure 3 (b) is a schematic diagram showing the development of the outer peripheral surface of the transfer roller.

[0026] Figure numerals: 100, pole piece unwinding device; 200, pole piece gluing device; 210, transfer roller; 211, convex portion; 212, avoidance area; 300, colloid curing device; 400, pole piece winding device; 500, diaphragm unwinding device; 610, defect detection device; 620, marking device; 700, position detection device; 810, deviation correction mechanism; 820, tension rocker mechanism; 830, pole piece buffer mechanism. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Solid-state lithium metal battery is a new type of battery that uses solid electrolytes to replace the diaphragms and liquid electrolytes used in traditional lithium-ion batteries, allowing the graphite anodes or silicon anodes in traditional lithium-ion batteries to be replaced by lithium metal anodes. Lithium metal anodes have a higher energy density than traditional anodes, allowing batteries to store more energy in the same volume. Therefore, solid-state batteries have the advantages of high energy density, high safety performance and long cycle life, and can be widely used in electric vehicles, mobile phones and other fields to improve endurance.

[0031] However, the existing solid-state battery manufacturing process is still in the research stage, and the production technology is immature. Specifically, the prepared pole piece roll is cut, and the cut pole pieces are laminated or wound with other pole pieces. In this process, it is difficult to ensure a high degree of fit between the pole pieces, which affects the quality of the solid-state battery cell. If a colloid is coated on the surface of the pole piece in order to improve the fit between the pole pieces, then during the winding process of the pole piece, the colloid on the pole piece is easily adhered to the adjacent pole piece due to the winding force, which will cause the pole piece roll to be unable to be unwound and used normally, resulting in waste of the pole piece roll and increased production costs of solid-state batteries.

[0032] Based on the above problems, the utility model provides a solid-state battery electrode sheet material roll manufacturing equipment, which can sequentially coat, solidify and reel the electrode sheet with colloid during the process of electrode sheet unwinding and conveying, and can improve the fit between two adjacent electrode sheets in the stacking process. At the same time, it can also avoid the problem of mutual adhesion between adjacent electrode sheets inside and outside due to the action of colloid during the electrode sheet rewinding process, so that the electrode sheet material roll with colloid can be unwound normally, thereby preventing the electrode sheet material roll with colloid from being damaged, such as breakage, colloid damage, etc., during the unwinding process, thereby preventing material waste caused by the electrode sheet damage such as breakage and colloid damage.

[0033] Reference below Figures 1 to 3 The invention describes a solid-state battery pole sheet roll manufacturing device provided according to an embodiment of the invention.

[0034] like Figure 1 and Figure 3 As shown, according to the solid-state battery pole piece roll manufacturing equipment of the first embodiment of the utility model, a frame-shaped colloid can be manufactured on the pole piece with a solid electrolyte layer on the surface. At this time, the colloid is arranged around the solid electrolyte layer.

[0035] It can be understood that in the present embodiment, the electrode sheet is a negative electrode sheet, and the length and width of the negative electrode sheet are greater than the length and width of the positive electrode sheet. In the lamination process, the negative electrode sheet and the positive electrode sheet are stacked in the up and down direction, and the solid electrolyte layer is located between the negative electrode sheet and the positive electrode sheet. The upper and lower surfaces of the solid electrolyte layer are in contact with the negative electrode sheet and the positive electrode sheet respectively. The thickness of the colloid is larger than that of the positive electrode sheet. The positive electrode sheet is located in the area surrounded by the frame-shaped colloid and is in contact with the side wall of the colloid. Moreover, between the two adjacent negative electrode sheets, the colloids on the upper and lower sides are in contact. At this time, the colloid plays a role of support and barrier insulation to prevent the edges of the two adjacent negative electrode sheets from easily contacting and short-circuiting.

[0036] Therefore, the provision of the colloid can ensure a high degree of fit between the negative electrode sheet and the positive electrode sheet, and between adjacent negative electrode sheets.

[0037] The structure of the solid-state battery pole sheet roll manufacturing equipment includes a pole sheet unwinding device 100, a pole sheet glue coating device 200, a colloid curing device 300 and a winding unit. Among them, the pole sheet unwinding device 100, the pole sheet glue coating device 200, the colloid curing device 300 and the winding unit are sequentially arranged along the pole sheet conveying path.

[0038] In this embodiment, the pole piece unwinding device 100, the pole piece glue coating device 200, the colloid curing device 300 and the winding unit are sequentially arranged in intervals along the left-right direction.

[0039] The pole piece unwinding device 100 is configured to unwind a pole piece with a solid electrolyte layer. It is understandable that the pole piece unwinding device 100 can be an existing unwinding machine, which has the function of unwinding a pole piece roll with a solid electrolyte layer. The pole piece unwinding device 100 mainly includes a rotatable unwinding roller. After the pole piece roll is installed on the unwinding roller, the pole piece with a solid electrolyte layer formed on the surface is unwound through the rotation of the unwinding roller. The pole piece will pass through the pole piece glue coating device 200 and the colloid curing device 300 in sequence along its conveying path, and then be wound up by the winding unit to form a pole piece roll with a solid electrolyte layer and colloid on the surface.

[0040] The pole piece glue coating device 200 is configured to be able to perform colloid coating on the surface of the pole piece. Preferably, the pole piece glue coating device 200 is also configured to be able to perform colloid coating around the solid electrolyte layer on the pole piece to form a frame-shaped colloid. The pole piece glue coating device 200 is provided with a glue coating station. When the pole piece with the solid electrolyte layer moves to the glue coating station, the pole piece glue coating device 200 can perform glue coating on the pole piece at the glue coating station to form a frame-shaped colloid, that is, a glue frame, on the surface of the pole piece. If viewed from the top and bottom directions, the solid electrolyte layer is square, and the colloid is in the shape of a square frame.

[0041] In this embodiment, the structure of the pole piece gluing device 200 includes a transfer roller assembly and a rotary drive mechanism. The transfer roller assembly includes two transfer rollers 210, and the diameters of the two transfer rollers 210 may be the same or different. A gluing channel for the pole piece to pass through is formed between the two transfer rollers 210. The gluing station is located in the gluing channel. When the pole piece passes through the gluing channel, the outer peripheral surfaces of the two transfer rollers 210 are in contact with two opposite surfaces of the pole piece respectively. The function of the rotary drive mechanism is to drive the transfer roller assembly to rotate. The rotary drive mechanism may be a motor, which drives at least one transfer roller 210 to rotate and performs a gluing process on the pole piece passing through the gluing channel.

[0042] It is understandable that the two transfer rollers 210 can be arranged opposite to each other up and down, and the axis of the transfer roller 210 extends forward and backward. Of course, it is not excluded that the two transfer rollers 210 are arranged opposite to each other up and down, and the axis of the transfer roller 210 extends in the up and down direction.

[0043] In this embodiment, two transfer rollers 210 are arranged opposite to each other in an upper and lower direction. The diameter of the upper transfer roller 210 is larger than that of the lower transfer roller 210. The lower transfer roller 210 supports the electrode. The outer peripheral surface of the upper transfer roller 210 is provided with a convex portion 211, such as Figure 3 As shown, after the outer peripheral surface of the upper transfer roller 210 is unfolded, the convex portion 211 is in a square frame shape, and the convex portion 211 surrounds a square avoidance area 212 .

[0044] It is understandable that a slurry basin can be set above the upper transfer roller 210. During the rotation of the upper transfer roller 210, the colloidal slurry in the slurry basin flows to the convex part 211 through the bottom outlet. When the convex part 211 contacts the upper surface of the pole piece, the colloidal slurry is transferred to the pole piece to form a square-shaped colloid. During this process, the avoidance area 212 will provide an avoidance effect for the solid electrolyte layer on the pole piece to prevent the convex part 211 from crushing the solid electrolyte layer. A plurality of solid electrolyte layers are provided, and they are arranged at a certain interval along the length direction of the pole piece.

[0045] In this embodiment, the electrode gluing device 200 can continuously apply glue to one surface of the electrode without pausing the electrode conveyance for gluing, thereby allowing the electrode unwinding device 100 to unwind continuously and achieve single-sided gluing of the electrode.

[0046] The colloid curing device 300 is configured to cure the colloid on the electrode. The colloid curing device 300 is provided with a curing station. When the electrode with the colloid moves to the curing station, the colloid curing device 300 can cure the colloid on the electrode located at the curing station.

[0047] It is understandable that the colloid curing device 300 can complete the colloid curing work by hot air drying or radiation drying. When the colloid can be cured under infrared or ultraviolet irradiation, the radiation drying device can be used. When the colloid can be cured under convection hot air environment, the hot air drying device can be used.

[0048] In this embodiment, the colloid curing device 300 is a hot air drying device, which has a drying chamber, and the curing station is located in the drying chamber. When the electrode piece passes through the drying chamber, the hot air can transfer heat energy to the colloid on the electrode piece, thereby accelerating the drying speed of the colloid and making the colloid cure faster. Rollers can be arranged inside and outside the drying chamber to provide support for the electrode piece and change the conveying direction. Some rollers can be active rollers, which can provide driving force for the movement of the electrode piece.

[0049] The structure of the winding unit includes a diaphragm unwinding device 500 and a pole piece winding device 400. The diaphragm unwinding device 500 is configured to unwind the diaphragm, and the pole piece winding device 400 is configured to wind up the diaphragm and the pole piece with colloid.

[0050] It is understandable that the diaphragm unwinding device 500 can be an existing unwinding machine, and the pole piece winding device 400 can be an existing winding machine, wherein the diaphragm unwinding device 500 includes a rotatable unwinding roller, and when the diaphragm material roll is placed on the unwinding roller of the diaphragm unwinding device 500, the unwinding roller can unwind the diaphragm material roll during the rotation process; the pole piece winding device 400 includes a rotatable winding roller, and during the rotation of the winding roller, the diaphragm and the pole piece with the solid electrolyte layer and the colloid can be wound, thereby completing the winding work of the pole piece. In order to allow the diaphragm to fit the pole piece smoothly, multiple rollers can be set in the unwinding path of the diaphragm and the winding path of the pole piece.

[0051] During the process of winding the pole piece, the diaphragm is used as a protective film for the pole piece and is wound together with the pole piece. The diaphragm can be bonded to the surface of the pole piece with colloid or the surface without colloid, so that the diaphragm can play a role of barrier and protection between any adjacent inner and outer pole pieces, avoiding the situation that the inner and outer pole pieces are firmly adhered due to the presence of colloid, which makes it difficult to separate and unwind. Therefore, the pole piece coated with colloid can be wound. Moreover, when the pole piece roll with colloid is unwinding, the diaphragm is torn off the pole piece, which is convenient for subsequent cutting of the pole piece and winding or laminating with other pole pieces. At the same time, the colloid on the pole piece ensures that the pole pieces can fit tightly with each other.

[0052] In some embodiments, the solid-state battery electrode sheet roll manufacturing equipment also includes a defect detection device 610 and a marking device 620.

[0053] The colloid curing device 300, the defect detection device 610, the marking device 620 and the winding unit are sequentially arranged along the conveying path of the electrode. Moreover, the defect detection device 610 is configured to detect defects on the electrode, and the marking device 620 is configured to mark the electrode according to the defect detection result.

[0054] It can be understood that the defect detection device 610 can be an existing electrode defect detection device. The defect detection device 610 is provided with an inspection station. The structure of the defect detection device 610 mainly includes a CCD (charge coupled device) camera, which can take a picture of the colloid-carrying surface of the electrode located at the inspection station, and process the image of the electrode through the existing image recognition and processing technology to identify whether there are defects on the colloid-carrying surface of the electrode, and obtain the defect detection result. If there are defects on the surface of the electrode, the electrode is regarded as an NG electrode.

[0055] The marking device 620 can be an existing laser marking machine. The marking device 620 is provided with a marking station. The marking device 620 marks the NG pole pieces located at the marking station by laser marking, so as to facilitate the subsequent removal of the NG pole pieces after cutting, thereby ensuring the good quality of the solid-state battery cells.

[0056] In this embodiment, the electrode unwinding device 100 and the winding unit operate non-stop, and the electrode moves toward the marking station after passing the inspection station. When the electrode moves to the marking station, the marking device 620 completes the marking work.

[0057] In some embodiments, the solid-state battery pole piece roll manufacturing equipment further includes a position detection device 700. The position detection device 700 is configured to detect the position of the pole lug of the pole piece, and the position detection device 700 is provided between the pole piece unwinding device 100 and the pole piece glue coating device 200 along the conveying path of the pole piece.

[0058] It is understandable that the position detection device 700 can be a non-contact detector, such as a beam-type photoelectric switch or a slot-type photoelectric switch. In this embodiment, the electrode unwinding device 100 can unwind the electrode with the electrode tab and the solid electrolyte layer. When the electrode accurately moves to the glue coating station while the electrode tab moves along its conveying path, the position detection device 700 can be triggered by the electrode tab on other electrode tabs to generate a detection signal, and the electrode glue coating device 200 will start to coat the glue.

[0059] In addition, in order to avoid affecting the gluing effect due to the position offset of the pole piece, the solid-state battery pole piece roll manufacturing equipment also includes a correction mechanism 810. Along the conveying path of the pole piece, the correction mechanism 810 is arranged between the pole piece unwinding device 100 and the pole piece gluing device 200, and the pole piece is corrected before gluing. It can be understood that the correction mechanism 810 can be an existing correction device that can correct the offset of the position of the pole piece. Those skilled in the art should understand its specific structure and working principle, which will not be described in detail here.

[0060] In addition, in order to ensure the tension of the pole piece moving along its conveying path and the tension of the diaphragm moving along its conveying path, the solid-state battery pole piece roll manufacturing equipment also includes a tension swing rod mechanism 820. The tension swing rod mechanism 820 is set near the unwinding end of the pole piece unwinding device 100, the rewinding end of the pole piece rewinding device 400, and the unwinding end of the diaphragm unwinding device 500. It can be understood that the tension swing rod mechanism 820 can be an existing tension swing rod device, which can adjust the tension of the pole piece or the diaphragm so that their tension meets the requirements.

[0061] like Figure 2 As shown, the solid-state battery pole piece stock roll manufacturing equipment according to the second embodiment of the utility model is different from the first embodiment in that the structure of the pole piece gluing device 200 is different.

[0062] In this embodiment, the structure of the electrode glue coating device 200 includes a glue coating platform and a screen printing mechanism. The screen printing mechanism is located above the glue coating platform, and the screen printing mechanism is configured to move up and down relative to the glue coating platform, and the screen printing mechanism can move downward to coat the electrode located on the glue coating platform with glue.

[0063] It is understandable that the glue coating platform is provided with a glue coating station, and the glue coating platform can provide support for the electrode. In some examples, the glue coating platform is a vacuum adsorption platform, which can provide adsorption and fixation for the electrode, so that the position of the electrode is fixed relative to the glue coating station, so that the colloid can be coated on the upper surface of the electrode by the screen printing mechanism. The screen printing mechanism can be an existing screen printing device, which can screen print a frame-shaped colloid on the surface of the electrode.

[0064] In some embodiments, the solid-state battery pole piece roll manufacturing equipment further includes a pole piece cache mechanism 830. Among them, the pole piece cache mechanism 830 is provided between the pole piece unwinding device 100 and the pole piece glue coating device 200 along the pole piece conveying path, and the pole piece cache mechanism 830 is provided between the colloid curing device 300 and the winding unit along the pole piece conveying path.

[0065] It is understandable that since the electrode conveying speeds required by multiple processes such as the gluing process, the unwinding process, the curing process and the winding process are different, in order to avoid the electrode becoming loose or torn due to inconsistent conveying speeds of the front and rear electrodes, it is necessary to set up a electrode buffer mechanism 830 to balance the speed difference between the front and rear processes and maintain the tension of the electrode conveying.

[0066] The pole piece cache mechanism 830 can be an existing pole piece cache device. When the pole piece cache mechanism 830 is set between the pole piece unwinding device 100 and the pole piece gluing device 200, it can ensure that the pole piece unwinding device 100 runs non-stop during the screen printing process, and the pole piece unwinding work is continuously performed, so that the gluing rhythm of the pole piece and the pole piece unwinding rhythm do not interfere with each other; when the pole piece cache mechanism 830 is set between the colloid curing device 300 and the winding unit, it can ensure that the winding unit can run non-stop during the screen printing and curing process, and the pole piece winding work is continuously performed, so that the gluing and curing rhythm of the pole piece and the winding rhythm of the pole piece do not interfere with each other.

[0067] Of course, it is not excluded that the pole piece buffer mechanism 830 is only provided between the pole piece unwinding device 100 and the pole piece glue coating device 200, or that the pole piece buffer mechanism 830 is only provided between the colloid curing device 300 and the winding unit.

[0068] In the above-mentioned first and second embodiments, only one pole piece glue coating device 200 is provided, which can only coat one surface of the pole piece with colloid, thereby completing the glue coating work on one side of the pole piece.

[0069] In other embodiments, Figure 2 As shown, there are two pole piece gluing devices 200, one of which is configured to apply glue to one surface of the pole piece, and the other pole piece gluing device 200 is configured to apply glue to the other opposite surface of the pole piece, so that double-sided gluing of the pole piece can be achieved by the two pole piece gluing devices 200.

[0070] Moreover, two colloid curing devices 300 are provided, and all the electrode glue coating devices 200 and all the colloid curing devices 300 are alternately arranged along the electrode conveying path. Therefore, after the glue coating work on any surface of the electrode is completed, the manufactured colloid is dried and cured by the corresponding colloid curing device 300.

[0071] In this embodiment, if Figure 2 As shown, the two electrode glue coating devices 200 are respectively set as the first glue coating device and the second glue coating device, and the two colloid curing devices 300 are respectively set as the first curing device and the second curing device. The first glue coating device, the first curing device, the second glue coating device and the second curing device are sequentially arranged along the conveying path of the electrode. The first glue coating device can complete the colloid coating work on the upper surface of the electrode. A plurality of rollers are arranged between the first curing device and the second glue coating device to change the direction of the electrode, so that the upper and lower surfaces of the electrode are turned over, so that the surface of the electrode with colloid faces downward, and the surface of the electrode without colloid faces upward, so as to facilitate the second glue coating device to complete the colloid coating work on the surface of the electrode without colloid.

[0072] Each pole piece glue coating device 200 may include a screen printing mechanism and may also include a transfer roller assembly.

[0073] Of course, it is not excluded that in other embodiments, the electrode gluing device 200 is provided with one and includes a transfer roller assembly. In the transfer roller assembly, two transfer rollers 210 are provided with a convex portion 211. When the electrode passes through the gluing channel, the two transfer rollers 210 can coat the colloid on the two opposite surfaces of the electrode, thereby realizing the gluing work on the front and back sides of the electrode.

[0074] Furthermore, the defect detection device 610 includes a first image collector and a second image collector. The first image collector is configured to collect images of one surface of the pole piece, and the second image collector is configured to collect images of another surface of the pole piece. The first image collector and the second image collector can both be CCD cameras.

[0075] Since frame-shaped colloids are manufactured on two opposite surfaces of the pole piece, the first image collector and the second image collector can jointly complete defect detection on the two surfaces of the pole piece to determine whether the two surfaces of the pole piece with colloid are both defect-free. If one of the surfaces has defects, the pole piece is regarded as an NG pole piece and needs to be marked.

[0076] In a specific embodiment, Figure 2 As shown, the first image collector, the second image collector, the marking device 620 and the winding unit are sequentially arranged along the conveying path of the pole piece. In this embodiment, after the two opposite surfaces of the pole piece form a frame-shaped colloid, the first image collector and the second image collector are used to perform defect detection on the upper and lower surfaces of the pole piece respectively. After the defect detection work is completed, according to the defect detection result that the pole piece is NG, the marking device 620 is enabled to mark the pole piece.

[0077] In another specific embodiment, a first image collector is provided between two electrode gluing devices 200 along the electrode conveying path, and a second image collector, a marking device 620 and a winding unit are sequentially arranged along the electrode conveying path.

[0078] It can be understood that, along the conveying path of the electrode piece, the first image collector can be arranged between the first gluing device and the first curing device, or between the first curing device and the second gluing device.

[0079] In this embodiment, after the first gluing device is used to produce a frame-shaped colloid on one of the surfaces of the electrode, the first image collector is used to perform defect detection on the surface of the electrode with the colloid; if the defect detection result is an NG electrode, there is no need to subsequently use the second gluing device to gluing the electrode, thereby reducing the waste of colloid material, and the marking device 620 is subsequently used to mark the defective electrode.

[0080] Of course, it is not ruled out that a marking position is set at the downstream position of the first image collector. After the first image collector completes image acquisition and obtains the defect detection result as NG pole piece, the marking device 620 is used for marking so as to identify it before the second gluing device works, and then the second gluing device is controlled to stop and start according to the identification result.

[0081] If the first defect detection result is normal, the second glue coating device is used to coat the other surface of the pole piece with colloid, thereby completing the double-sided glue coating of the pole piece. Then, the second image collector is used to perform defect detection on the other surface of the pole piece, completing the front and back defect detection of the pole piece.

[0082] In the solid-state battery pole piece material roll manufacturing equipment provided in the embodiment of the utility model, the pole piece unwinding device 100 is operated to unwind the pole piece with a solid electrolyte layer on the surface. In the process of the pole piece moving along its conveying path, the pole piece surface is firstly coated with glue by the pole piece gluing device 200, so that a glue frame arranged around the solid electrolyte layer can be manufactured on the surface of the pole piece. Then, the glue frame on the pole piece is cured by the colloid curing device 300 to accelerate the drying and forming speed of the glue frame, thereby forming a pole piece with a solid electrolyte layer and a glue frame, so that the long pole piece just manufactured can be wound up by the winding unit later; while the pole piece winding device 400 is working, the diaphragm unwinding device 500 unwinds the diaphragm, allowing the diaphragm to enter the pole piece winding device 400 together with the pole piece.

[0083] Since the diaphragm and the electrode are rolled up together during the electrode rolling process, the diaphragm can isolate the adjacent electrode sheets inside and outside, and play a good protective role. Therefore, it can avoid the situation in which the adjacent electrode sheets inside and outside are stuck together due to the presence of the colloid during the electrode rolling process, resulting in the electrode sheet material roll with the colloid being unable to be unwound and used normally; moreover, in the lamination or winding compounding process, the action of the colloid can ensure a high degree of fit between adjacent electrode sheets.

[0084] 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.

[0085] 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 pole sheet roll manufacturing equipment, characterized in that: It includes a pole piece unwinding device, a pole piece gluing device, a colloid curing device and a winding unit which are sequentially arranged along the pole piece conveying path; Wherein, the pole piece unwinding device is configured to be able to unwind the pole piece with the solid electrolyte layer; The pole piece glue coating device is configured to coat the surface of the pole piece with colloid; The colloid curing device is configured to cure the colloid on the electrode piece; The winding unit comprises a diaphragm unwinding device and a pole piece winding device, wherein the diaphragm unwinding device is configured to unwind the diaphragm, and the pole piece winding device is configured to wind up the diaphragm and the pole piece with colloid.

2. The solid-state battery pole sheet roll manufacturing equipment according to claim 1, characterized in that: It also includes a defect detection device and a marking device. The colloid curing device, the defect detection device, the marking device and the winding unit are arranged in sequence along the conveying path of the electrode piece. The defect detection device is configured to perform defect detection on the electrode piece, and the marking device is configured to mark the electrode piece according to the defect detection result.

3. The solid-state battery pole sheet roll manufacturing equipment according to claim 2, characterized in that: There are two of each of the electrode gluing device and the colloid curing device, one of which is configured to apply glue to one surface of the electrode, and the other is configured to apply glue to the other opposite surface of the electrode, and all of the electrode gluing devices and all of the colloid curing devices are alternately arranged in sequence along the conveying path of the electrode.

4. The solid-state battery pole sheet roll manufacturing equipment according to claim 3, characterized in that: The defect detection device includes a first image collector and a second image collector. The first image collector is configured to capture an image of one surface of the pole piece, and the second image collector is configured to capture an image of another surface of the pole piece.

5. The solid-state battery pole sheet roll manufacturing equipment according to claim 4, characterized in that: The first image collector, the second image collector, the marking device and the winding unit are arranged in sequence along the conveying path of the pole piece.

6. The solid-state battery pole sheet roll manufacturing equipment according to claim 4, characterized in that: The first image collector is arranged between the two electrode gluing devices along the electrode conveying path, and the second image collector, the marking device and the winding unit are arranged in sequence along the electrode conveying path.

7. The solid-state battery pole sheet roll manufacturing equipment according to claim 1, characterized in that: It also includes a position detection device, which is configured to detect the position of the pole lug of the pole piece, and is provided between the pole piece unwinding device and the pole piece gluing device along the pole piece conveying path; And / or, the pole piece glue coating device is also configured to perform colloid coating around the solid electrolyte layer on the pole piece.

8. The solid-state battery pole sheet roll manufacturing equipment according to any one of claims 1 to 7, characterized in that: The pole piece glue coating device comprises a transfer roller assembly, and the transfer roller assembly is provided with a glue coating channel for the pole piece to pass through.

9. The solid-state battery pole sheet roll manufacturing equipment according to any one of claims 1 to 7, characterized in that: The pole piece gluing device comprises a gluing platform and a screen printing mechanism, wherein the screen printing mechanism is located above the gluing platform and is configured to move up and down relative to the gluing platform and to apply glue to the pole piece located on the gluing platform.

10. The solid-state battery pole sheet roll manufacturing equipment according to claim 9, characterized in that: It also includes a pole piece cache mechanism, which is arranged between the pole piece unwinding device and the pole piece gluing device along the pole piece conveying path; and / or, the pole piece cache mechanism is arranged between the colloid curing device and the winding unit along the pole piece conveying path.

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