A solid-state battery sheet manufacturing device and a solid-state battery manufacturing apparatus

Abstract

The application relates to a solid-state battery sheet manufacturing device and a solid-state battery manufacturing equipment. The solid-state battery sheet manufacturing device comprises a composite mechanism, a first adhesive frame unwinding assembly, a pole piece unwinding assembly, a second adhesive frame unwinding assembly and a material belt composite assembly, the first adhesive frame unwinding assembly, the pole piece unwinding assembly and the second adhesive frame unwinding assembly are arranged upstream of the material belt composite assembly; and a sheet manufacturing mechanism, comprising a main drive traction assembly and a cutting assembly, the main drive traction assembly is arranged downstream of the material belt composite assembly, and the cutting assembly is arranged downstream of the main drive traction assembly. In this way, the first adhesive frame material belt, the pole piece material belt and the second adhesive frame material belt are compounded by the material belt composite assembly, and then the compounded material belt is cut by the cutting assembly to form a pole piece sheet, thereby avoiding cutting and manufacturing sheets for the pole piece, the solid-state electrolyte layer and the adhesive frame, which is beneficial to improving the sheet manufacturing efficiency and further improving the production efficiency of the whole machine, so as to better meet the capacity demand.

Description

Technical Field

[0001] This application relates to the field of solid-state battery manufacturing equipment technology, specifically to a solid-state battery wafer fabrication apparatus and solid-state battery preparation equipment. Background Technology

[0002] With the continuous advancement of technology and the increasing demands of people, battery technology is also constantly evolving. Among them, solid-state batteries are a new type of battery technology that uses a solid electrolyte instead of a liquid electrolyte. Compared with traditional liquid batteries, solid-state batteries have advantages such as higher energy density, faster charging speed, better safety performance, and longer lifespan, and have attracted widespread attention.

[0003] In existing technologies, solid-state batteries generally include a positive electrode, a negative electrode, a solid electrolyte, and a frame. The process requires first cutting the positive and negative electrode sheets, solid electrolyte, and frame into sheets, and then stacking these sheets on a stacking table to form a solid-state battery cell. However, existing solid-state battery manufacturing equipment has low sheet-forming efficiency, which cannot match the stacking efficiency of the stacking process, resulting in low overall equipment production efficiency and an inability to meet capacity requirements. Utility Model Content

[0004] Therefore, it is necessary to provide a solid-state battery wafer fabrication device and solid-state battery preparation equipment that can improve wafer fabrication efficiency and better meet production capacity requirements in order to address the above problems.

[0005] A solid-state battery fabrication apparatus, comprising:

[0006] The composite mechanism includes a first film frame unwinding assembly, an electrode unwinding assembly, a second film frame unwinding assembly, and a strip composite assembly, wherein the first film frame unwinding assembly, the electrode unwinding assembly, and the second film frame unwinding assembly are all arranged upstream of the strip composite assembly; and

[0007] The film-making mechanism includes a main drive traction assembly and a cutting assembly, wherein the main drive traction assembly is arranged downstream of the strip composite assembly, and the cutting assembly is arranged downstream of the main drive traction assembly.

[0008] In some embodiments, the first frame unwinding assembly is used to unwind and output the first frame material strip, the electrode unwinding assembly is used to unwind and output the electrode material strip, the second frame unwinding assembly is used to unwind and output the second frame material strip, and the material strip composite assembly is used to sequentially roll-press and composite the first frame material strip, the electrode material strip, and the second frame material strip to form a composite material strip;

[0009] The main drive traction assembly is used to pull the composite strip along the path toward the cutting assembly, and the cutting assembly is used to cut the composite strip along the path to form electrode sheets.

[0010] In some embodiments, the composite mechanism further includes a first release film winding assembly disposed between the downstream of the tape composite assembly and the upstream of the main drive traction assembly, for winding the first release film on the composite tape along the path.

[0011] In some embodiments, the sheet-making mechanism further includes a second release film winding assembly disposed downstream of the tape composite assembly and upstream of the main drive traction assembly for winding up the second release film on the composite tape along the path.

[0012] In some embodiments, the film-making mechanism further includes a feeding assembly disposed downstream of the cutting assembly.

[0013] In some embodiments, the film-making mechanism further includes a fourth vision inspection component arranged on the material feeding path of the material feeding component.

[0014] In some embodiments, the film-making mechanism further includes a third dust removal assembly arranged on the material conveying path of the material conveying assembly.

[0015] In some embodiments, the material conveying assembly is a vacuum belt conveyor.

[0016] A solid-state battery fabrication apparatus, characterized in that it includes a stacking device and a solid-state battery wafer fabrication device as described in any of the above embodiments.

[0017] A method for fabricating a solid-state battery includes the following steps:

[0018] Unwinding outputs the first rubber frame strip, the electrode strip, and the second rubber frame strip;

[0019] The first frame material strip, the electrode material strip, and the second frame material strip are sequentially rolled together to form a composite material strip;

[0020] The composite strip is cut to form electrode sheets.

[0021] In some embodiments, the step of sequentially rolling and bonding the first frame strip, the electrode strip, and the second frame strip together with the step of cutting the composite strip includes:

[0022] The first release film on one side of the composite strip is wound up;

[0023] The second release film on the other side of the composite strip is wound up.

[0024] The aforementioned solid-state battery fabrication apparatus, solid-state battery preparation equipment, and solid-state battery fabrication method utilize a material strip composite assembly to composite the first frame material strip, the electrode material strip, and the second frame material strip. Then, a cutting assembly is used to cut the composite material strip to form electrode sheets. This avoids separately cutting and fabricating the electrode sheet, solid electrolyte layer, and frame, which helps to improve the fabrication efficiency and thus the overall production efficiency of the machine, so as to better meet the production capacity requirements. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the solid-state battery fabrication apparatus in one embodiment of this application;

[0026] Figure 2 This is a solid-state battery formed by stacking electrode sheets and positive electrode sheets in one embodiment of this application;

[0027] Figure 3 This is a flowchart of the solid-state battery fabrication method in one embodiment of this application. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] Please see Figure 1 and Figure 2This application provides a solid-state battery fabrication apparatus, including a composite mechanism 10 and a fabrication mechanism 20. The composite mechanism 10 includes a first frame unwinding assembly 11, an electrode unwinding assembly 12, a second frame unwinding assembly 13, and a strip composite assembly 14. The first frame unwinding assembly 11, the electrode unwinding assembly 12, and the second frame unwinding assembly 13 are all arranged upstream of the strip composite assembly 14, and are respectively used to unwind and output the first frame strip a1, the electrode strip a2, and the second frame strip a3 to the strip composite assembly 14. A solid electrolyte layer is disposed on both sides of the electrode strip a2. The strip composite assembly 14 is used to sequentially roll-composite the first frame strip a1, the electrode strip a2, and the second frame strip a3 to form a composite strip a4. It should be noted that the electrode strip a2 can be a negative electrode strip; however, in other embodiments it can also be a positive electrode strip, which is not limited here. The first frame strip a1 and the second frame strip a3 can be either single-layer or double-layer frames; no limitation is made here. For ease of understanding, this article uses the electrode strip a2 as an example of a negative electrode strip.

[0035] The electrode forming mechanism 20 includes a main drive traction assembly 21 and a cutting assembly 22. The main drive traction assembly 21 is arranged downstream of the strip composite assembly 14 and is used to pull the composite strip a4 downstream. The cutting assembly 22 is arranged downstream of the main drive traction assembly 21 and is used to cut the composite strip a4 to form an electrode sheet D. The electrode sheet D includes a first adhesive frame d1, a negative electrode sheet d2, and a second adhesive frame d3 stacked sequentially.

[0036] In this way, the first frame strip a1, the electrode strip a2, and the second frame strip a3 are combined using the strip composite assembly 14, and then the composite strip a4 is cut using the cutting assembly 22 to form the electrode sheet D. This avoids cutting the electrode sheet, solid electrolyte layer, and frame separately, which helps to improve the sheet production efficiency and thus improve the overall production efficiency of the machine, so as to better meet the production capacity requirements.

[0037] It should be noted that, please refer to Figure 2 Because the composite assembly 14 sequentially composites the first frame tape a1, the electrode tape a2, and the second frame tape a3, the electrode sheet D formed by the cutting assembly 22 includes a first frame d1, a negative electrode d2, and a second frame d3 stacked sequentially. During subsequent stacking, the electrode sheet D and the positive electrode E are alternately stacked to form a battery cell. Since the first frame d1 and the second frame d3 are stacked on both sides of the negative electrode d2, the negative electrode tab d21 on the negative electrode d2 is insulated from the adjacent positive electrode E, and the positive electrode tab e1 on the positive electrode E is also insulated from the adjacent negative electrode d2. This prevents the tab from contacting the adjacent electrode and causing a short circuit, thus improving the safety of the solid-state battery.

[0038] Please continue reading Figure 1 Specifically, in this embodiment, the first adhesive frame strip a1 unwound by the first adhesive frame unwinding assembly 11 includes a first release film a5 and a plurality of first adhesive frames d1 disposed on the same side of the first release film a5. Each first adhesive frame d1 is arranged sequentially along the length direction of the first release film a5.

[0039] The composite mechanism 10 also includes a first release film winding assembly, which is arranged between the downstream of the tape composite assembly 14 and the upstream of the main drive traction assembly 21, for winding the first release film a5 on the composite tape a4 that passes through, so that the composite tape a4 that reaches the main drive traction assembly 21 does not contain the first release film a5.

[0040] Furthermore, the first release film winding assembly includes a first guide roller 151, a first tension adjusting assembly, and a first release film winding member 15. The first guide roller 151 allows the first release film a5 on the composite strip a4 to be wound around it. The first release film winding member 15 is arranged downstream of the first guide roller 151 and is used to wind the first release film a5 on the composite strip a4 that has been wound around the first guide roller 151. The first tension adjusting assembly is arranged between the downstream of the first guide roller 151 and the upstream of the first release film winding member 15 and is used to adjust the tension of the first release film a5 so that the tension of the first release film a5 remains stable, so that the first release film winding member 15 can stably wind the first release film a5.

[0041] Optionally, the first tension adjustment assembly includes a second guide roller 152, a third guide roller 154, and a first moving roller 153. The second guide roller 152 is arranged downstream of the first guide roller 151, the third guide roller 154 is arranged downstream of the second guide roller 152, the first release film winding member 15 is arranged downstream of the third guide roller 154, and the first moving roller 153 is movably disposed between the second guide roller 152 and the third guide roller 154. Thus, after the first release film a5 on the composite strip a4 separates from the composite strip a4 at the first guide roller 151, it sequentially passes through the second guide roller 152, the first moving roller 153, and the third guide roller 154, and is then wound up by the first release film winding member 15. The first moving roller 153 can move relative to the second guide roller 152 and the third guide roller 154, thereby causing the first release film a5 to be tensioned or relaxed, that is, to adjust the tension of the first release film a5 and ensure that the tension of the first release film a5 remains stable.

[0042] It should be noted that the tension of the first release film can be adjusted by means of translation or oscillation, which is not limited here.

[0043] Please continue reading Figure 1Specifically, in this embodiment, the composite mechanism 10 further includes a deviation correction component 129, which is arranged between the downstream of the electrode unwinding component 12 and the upstream of the strip composite component 14. The deviation correction component 129 is used to correct the deviation of the passing electrode strip a2, preventing deviation in the width direction between the electrode strip a2 entering the strip composite component 14 and the first frame strip a1 and the second frame strip a3.

[0044] Specifically, in this embodiment, the composite mechanism 10 further includes a fourth guide roller 121, a first tape-joining assembly 122, and a fifth guide roller 123. The fourth guide roller 121 and the fifth guide roller 123 are both arranged downstream of the electrode unwinding assembly 12 and upstream of the correction assembly 129, while the first tape-joining assembly 122 is arranged between the fourth guide roller 121 and the fifth guide roller 123. Thus, the electrode strip a2 unwound from the electrode unwinding assembly 12 sequentially passes through the fourth guide roller 121, the first tape-joining assembly 122, the fifth guide roller 123, the correction assembly 129, and the tape composite assembly 14. The fourth guide roller 121 and the fifth guide roller 123 are used to deflect the passing electrode strip a2, ensuring that the electrode strip a2 between the fourth guide roller 121 and the fifth guide roller 123 passes through the first tape-joining assembly 122, facilitating tape-joining operations at the first tape-joining assembly 122.

[0045] It should be noted that when the material roll on the electrode unwinding assembly 12 is used up and needs to be replaced, the electrode material strip a2 is first cut at the first splicing assembly 122, and the downstream cut end of the electrode material strip a2 is fixed using the first splicing assembly 122. Then, the empty material roll on the electrode unwinding assembly 12 is removed, and a new full material roll is loaded onto the electrode unwinding assembly 12. The starting end of the material strip on the full material roll is then pulled to the first splicing assembly 122 and bonded to the downstream cut end of the electrode material strip a2 fixed by the first splicing assembly 122 using adhesive tape, thus completing the splicing.

[0046] In a specific embodiment, the composite mechanism 10 further includes a second tension adjustment component. This second tension adjustment component is arranged between the downstream of the electrode unwinding component 12 and the upstream of the correction component 129, and is used to adjust the tension of the electrode strip a2 so that the tension of the electrode strip a2 remains stable, so that the electrode strip a2 enters the strip composite component 14 with a certain tension, which is beneficial to improving the quality of strip composite.

[0047] Optionally, the second tension adjustment assembly includes a sixth guide roller 125, a seventh guide roller 127, and a second motion roller 126. The sixth guide roller 125 is arranged downstream of the electrode unwinding assembly 12, the seventh guide roller 127 is arranged downstream of the sixth guide roller 125, the web guiding assembly 129 is arranged downstream of the seventh guide roller 127, and the second motion roller 126 is movably disposed between the sixth guide roller 125 and the seventh guide roller 127. Thus, the electrode strip a2 unwound from the electrode unwinding assembly 12 passes sequentially through the sixth guide roller 125, the second motion roller 126, the seventh guide roller 127, and the web guiding assembly 129. The second motion roller 126 can move relative to the sixth guide roller 125 and the seventh guide roller 127, thereby tensioning or relaxing the passing electrode strip a2, thus adjusting the tension of the electrode strip a2 and ensuring that the tension of the electrode strip a2 remains stable.

[0048] It should be noted that the tension of the electrode strip a2 can be adjusted by means of translation or oscillation, which is not limited here.

[0049] Specifically, in this embodiment, the composite mechanism 10 further includes a first dust removal component 124 and a second dust removal component 120. Both the first dust removal component 124 and the second dust removal component 120 are arranged between the downstream of the electrode unwinding component 12 and the upstream of the correction component 129. The first dust removal component 124 is used to remove dust from one side of the passing electrode strip a2, and the second dust removal component 120 is used to remove dust from the other side of the passing electrode strip a2. Thus, by using the first dust removal component 124 and the second dust removal component 120 to remove dust from both sides of the electrode strip a2, dust and other contaminants are avoided from remaining on the surface of the electrode strip a2 entering the strip composite assembly 14.

[0050] Specifically Figure 1 In the illustrated embodiment, the electrode unwinding assembly 12, the fourth guide roller 121, the first tape-connecting assembly 122, the fifth guide roller 123, the first dust removal assembly 124, the sixth guide roller 125, the second motion roller 126, the seventh guide roller 127, the second dust removal assembly 120, and the web-correcting assembly 129 are arranged sequentially from upstream to downstream. That is, the electrode strip a2 unwound from the electrode unwinding assembly 12 passes sequentially through the fourth guide roller 121, the first tape-connecting assembly 122, the fifth guide roller 123, the first dust removal assembly 124, the sixth guide roller 125, the second motion roller 126, the seventh guide roller 127, the second dust removal assembly 120, and the web-correcting assembly 129 before entering the strip composite assembly 14 for composite processing.

[0051] In a specific embodiment, the composite material assembly 14 includes a first composite roller 141 and a second composite roller 142, both of which are rotatable about their own axes. The first composite roller 141 and the second composite roller 142 are arranged parallel to each other and opposite to each other, forming a composite channel between them for the first frame material a1, the electrode material a2, and the second frame material a3 to pass through. Thus, the first composite roller 141 and the second composite roller 142 jointly compress the first frame material a1, the electrode material a2, and the second frame material a3 passing between them, causing the first frame material a1, the electrode material a2, and the second frame material a3 to sequentially adhere to each other to form a composite material a4.

[0052] Furthermore, the strip composite assembly 14 also includes an adjustment assembly 143, which is connected to the second composite roller 142. The adjustment assembly 143 is used to move the second composite roller 142 closer to or further away from the first composite roller 141, thereby adjusting the width of the composite channel, and thus adjusting the pressure applied to the first frame strip a1, the electrode strip a2, and the second frame strip a3 passing through the composite channel.

[0053] It should be noted that the first electrode strip a2 or the first frame strip a1 and the second frame strip a3 have a bonding adhesive. This bonding adhesive can be a pressure-sensitive adhesive or a heat-sensitive adhesive, and is not limited here. The first composite roller 141 and the second composite roller 142 can be room temperature rollers or hot-press rollers, as long as they can achieve the composite of the first frame strip a1, the electrode strip a2, and the second frame strip a3, and are not limited here.

[0054] Specifically, in this embodiment, the composite mechanism 10 further includes a first visual inspection component 1291 and a second visual inspection component 128. Both the first visual inspection component 1291 and the second visual inspection component 128 are arranged downstream of the electrode unwinding component 12 and upstream of the correction component 129, respectively used to detect surface defects on opposite sides of the passing electrode strip a2. Optionally, both the first visual inspection component 1291 and the second visual inspection component 128 can be cameras.

[0055] In a specific embodiment, the composite mechanism 10 further includes an eighth guide roller 111, a second tape-joining assembly 112, and a ninth guide roller 113. The eighth guide roller 111 and the ninth guide roller 113 are both arranged downstream of the first frame unwinding assembly 11 and upstream of the tape composite assembly 14. The second tape-joining assembly 112 is arranged between the eighth guide roller 111 and the ninth guide roller 113. Thus, the first frame tape a1 unwound from the first frame unwinding assembly 11 sequentially passes through the eighth guide roller 111, the second tape-joining assembly 112, the ninth guide roller 113, and the tape composite assembly 14. The eighth guide roller 111 and the ninth guide roller 113 are used to deflect the passing first frame tape a1, ensuring that the first frame tape a1 between the eighth guide roller 111 and the ninth guide roller 113 passes through the second tape-joining assembly 112, facilitating tape-joining operations at the second tape-joining assembly 112.

[0056] It should be noted that when the material roll on the first frame unwinding assembly 11 is used up and needs to be replaced, the first frame material strip a1 is first cut at the second splicing assembly 112, and the downstream cut end of the first frame material strip a1 is fixed by the second splicing assembly 112. Then, the empty material roll on the first frame unwinding assembly 11 is removed, and a new full material roll is loaded onto the first frame unwinding assembly 11. The starting end of the material strip on the full material roll is then pulled to the second splicing assembly 112, and bonded to the downstream cut end of the first frame material strip a1 fixed by the second splicing assembly 112 with adhesive tape, thus completing the splicing.

[0057] In a specific embodiment, the composite mechanism 10 further includes a tenth guide roller 131, a third tape-joining assembly 132, and an eleventh guide roller 133. The tenth guide roller 131 and the eleventh guide roller 133 are both arranged downstream of the second frame unwinding assembly 13 and upstream of the tape composite assembly 14. The third tape-joining assembly 132 is arranged between the tenth guide roller 131 and the eleventh guide roller 133. Thus, the second frame tape a3 unwound from the second frame unwinding assembly 13 sequentially passes through the tenth guide roller 131, the third tape-joining assembly 132, the eleventh guide roller 133, and the tape composite assembly 14. The tenth guide roller 131 and the eleventh guide roller 133 are used to deflect the passing second frame tape a3, ensuring that the second frame tape a3 between the tenth guide roller 131 and the eleventh guide roller 133 passes through the third tape-joining assembly 132, facilitating tape-joining operations at the third tape-joining assembly 132.

[0058] It should be noted that when the material roll on the second frame unwinding assembly 13 is used up and needs to be replaced, firstly, the second frame material strip a3 is cut at the third splicing assembly 132, and the downstream cut end of the second frame material strip a3 is fixed using the third splicing assembly 132. Then, the empty material roll on the second frame unwinding assembly 13 is removed, and a new full material roll is loaded onto the second frame unwinding assembly 13. The starting end of the material strip on the full material roll is then pulled to the third splicing assembly 132, and bonded to the downstream cut end of the second frame material strip a3 fixed by the third splicing assembly 132 with adhesive tape, thus completing the splicing.

[0059] In embodiments of this application, the film-making mechanism 20 further includes a third visual inspection component 26. This third visual inspection component 26 is arranged downstream of the first release film winding assembly and upstream of the main drive traction assembly 21, so that it can visually inspect the side of the composite strip a4 with the first adhesive frame a1. Thus, if a surface defect is detected in a segment of the composite strip a4, the defective electrode sheet D will be rejected after that segment is subsequently cut to form the electrode sheet D. It should be noted that the first visual inspection component 1291 can be a camera.

[0060] Specifically, in this embodiment, the electrode forming mechanism 20 further includes a conveying assembly 25, which is arranged downstream of the cutting assembly 22 to receive the electrode sheet material D formed by cutting the composite material strip a4 by the cutting assembly 22. Optionally, the conveying assembly 25 is a vacuum belt conveyor. In actual use, firstly, the main drive traction assembly 21 pulls the composite material strip a4 a certain distance towards the cutting assembly 22, so that the starting end of the composite material strip a4 reaches the belt of the conveying assembly 25 and is attracted and fixed on the belt; then, the cutting assembly 22 cuts the composite material strip a4. At this time, a portion of the cut electrode sheet material D is attracted and fixed on the belt of the conveying assembly 25. Then, the belt of the conveying assembly 25 moves downstream, thereby driving the electrode sheet material D to move downstream together.

[0061] In a specific embodiment, the film-making mechanism 20 further includes a fourth visual inspection component 24, which is arranged on the material feeding path of the material feeding component 25, so that the fourth visual inspection component 24 can perform visual inspection on the electrode sheet material D on the material feeding component 25.

[0062] Furthermore, the fourth vision inspection component 24 is used to perform dimensional inspection on the electrode sheet material D on the feeding assembly 25 to determine whether the dimensions of the electrode sheet material D are qualified; and / or, the fourth vision inspection component 24 is used to perform surface defect inspection on the electrode sheet material D on the feeding assembly 25 to determine whether surface defects exist in the electrode sheet material D. It should be noted that the fourth vision inspection component 24 may be a camera.

[0063] In a specific embodiment, the electrode fabrication mechanism 20 further includes a third dust removal component 23, which is arranged on the feeding path of the feeding component 25, so that the third dust removal component 23 can remove dust from the electrode sheet material D on the feeding component 25 to ensure that the cleanliness of the electrode sheet material D on the feeding component 25 meets the process requirements.

[0064] Specifically Figure 1 In the illustrated embodiment, the third dust removal component 23 and the fourth visual inspection component 24 are arranged sequentially along the feeding direction of the feeding component 25. That is, the electrode sheet D on the feeding component 25 passes through the third dust removal component 23 for dust removal and the fourth visual inspection component 24 for visual inspection.

[0065] Specifically, in this embodiment, the second adhesive frame strip a3 unwound by the second adhesive frame unwinding assembly 13 includes a second release film a6 and a plurality of second adhesive frames d3 disposed on the same side of the second release film a6. Each second adhesive frame d3 is arranged sequentially along the length of the second release film a6.

[0066] The film-making mechanism 20 also includes a second release film winding assembly, which is arranged downstream of the first release film winding assembly and upstream of the main drive traction assembly 21, for winding the second release film a6 on the composite strip a4, such that the composite strip a4 reaching the main drive traction assembly 21 does not contain the second release film a6.

[0067] Furthermore, the second release film winding assembly includes a twelfth guide roller 281, a third tension adjusting assembly, and a second release film winding member 28. The twelfth guide roller 281 allows the second release film a6 on the composite strip a4 to be wound around it. The second release film winding member 28 is arranged downstream of the twelfth guide roller 281 and is used to wind the second release film a6 on the composite strip a4 that has been wound around the twelfth guide roller 281. The third tension adjusting assembly is arranged between the downstream of the twelfth guide roller 281 and the upstream of the second release film winding member 28 and is used to adjust the tension of the second release film a6 so that the tension of the second release film a6 remains stable, so that the second release film winding member 28 can stably wind the second release film a6.

[0068] Optionally, the third tension adjustment assembly includes a thirteenth guide roller 282, a fourteenth guide roller 284, and a third motion roller 283. The thirteenth guide roller 282 is arranged downstream of the twelfth guide roller 281, the fourteenth guide roller 284 is arranged downstream of the thirteenth guide roller 282, the second release film winding member 28 is arranged downstream of the fourteenth guide roller 284, and the third motion roller 283 is movably disposed between the thirteenth guide roller 282 and the fourteenth guide roller 284. Thus, after the second release film a6 on the composite strip a4 separates from the composite strip a4 at the twelfth guide roller 281, it sequentially passes through the thirteenth guide roller 282, the third motion roller 283, and the fourteenth guide roller 284, and is then wound up by the second release film winding member 28. The third motion roller 283 can move relative to the thirteenth pass roller 282 and the fourteenth pass roller 284, thereby causing the second release film a6 to be tensioned or relaxed, that is, to adjust the tension of the second release film a6 and ensure that the tension of the second release film a6 remains stable.

[0069] It should be noted that the tension of the second release film can be adjusted by means of translation or oscillation, which is not limited here.

[0070] In a specific embodiment, the film-making mechanism 20 further includes a cutting component 27, which is arranged between the downstream of the third visual inspection component 26 and the upstream of the second release film winding component. The cutting component 27 is used to cut the passing composite strip a4 to form tabs on the electrode strip a2 of the composite strip a4.

[0071] It should be noted that the cutting component 27 is not necessary. In some embodiments, when the electrode strip a2 unwound from the electrode unwinding assembly 12 has tabs, the cutting component 27 is not required. In some embodiments, when the electrode strip a2 unwound from the electrode unwinding assembly 12 does not have tabs, the cutting component 27 is required.

[0072] The position of the cutting component 27 is not limited to the area between the downstream of the third vision inspection component 26 and the upstream of the second release film winding component. It can also be arranged between the downstream of the electrode unwinding component 12 and the upstream of the material tape composite component 14, as long as it can be cut on the electrode material tape a2 to form an electrode tab. No limitation is made here.

[0073] Based on the above-described solid-state battery fabrication apparatus, this application also provides a solid-state battery fabrication device. This solid-state battery fabrication device includes a stacking device and the solid-state battery fabrication apparatus as described in any of the above embodiments. The solid-state battery fabrication apparatus is used to fabricate the above-described electrode sheet D. The stacking device is used to stack the electrode sheet D to form a solid-state battery.

[0074] It should be noted that when the electrode in electrode sheet D is a negative electrode, the stacking device is used to stack electrode sheet D and the positive electrode to form a solid-state battery. When the electrode in electrode sheet D is a positive electrode, the stacking device is used to stack electrode sheet D and the negative electrode to form a solid-state battery.

[0075] Based on the above-described solid-state battery fabrication apparatus, this application also provides a method for fabricating solid-state batteries. Please see below. Figure 1 and Figure 3 The solid-state battery fabrication method includes the following steps:

[0076] S10. Unwind and output the first frame strip a1, the electrode strip a2, and the second frame strip a3. Specifically, the first frame strip a1 is unwound and output downstream of the strip composite assembly 14 using the first frame unwinding assembly 11, the electrode strip a2 is unwound and output downstream of the strip composite assembly 14 using the electrode unwinding assembly 12, and the second frame strip a3 is unwound and output downstream of the strip composite assembly 14 using the second frame unwinding assembly 13. Both sides of the electrode strip a2 have solid electrolyte layers. The first frame strip a1 includes a first release film a5 and a plurality of first frames d1 disposed on the same side of the first release film a5, with each first frame d1 arranged sequentially along the length direction of the first release film a5. The second frame strip a3 includes a second release film a6 and a plurality of second frames d3 disposed on the same side of the second release film a6, with each second frame d3 arranged sequentially along the length direction of the second release film a6.

[0077] S20. The first frame strip a1, electrode strip a2, and second frame strip a3 are sequentially roll-pressed together to form a composite strip a4. Specifically, the strip composite assembly 14 roll-presses the first frame strip a1, electrode strip a2, and second frame strip a3, so that the first frame strip a1, electrode strip a2, and second frame strip a3 are composited to form a composite strip a4. The composite strip a4 includes a first release film, a first frame, a solid electrolyte layer, an electrode, a solid electrolyte layer, a second frame, and a second release film, which are sequentially stacked.

[0078] S30. The first release film on the composite strip a4 is wound up using the first release film winding assembly, so that the first release film is separated from the other layers of the composite strip a4. At this time, the composite strip a4 includes a first adhesive frame, a solid electrolyte layer, an electrode sheet, a solid electrolyte layer, a second adhesive frame, and a second release film stacked in sequence.

[0079] The second release film on the composite strip a4 is wound up using the second release film winding assembly, so that the second release film is separated from the other layers of the composite strip a4. At this time, the composite strip a4 includes a first adhesive frame, a solid electrolyte layer, an electrode sheet, a solid electrolyte layer and a second adhesive frame stacked in sequence.

[0080] S40. The composite strip a4 is cut to form an electrode sheet D. Specifically, the composite strip a4 is cut using the cutting component 22, and the cut part is an electrode sheet D, thus completing the sheet making process.

[0081] Thus, the above solid-state battery manufacturing method first combines the first frame strip a1, the electrode strip a2, and the second frame strip a3 to form a composite strip a4, and then cuts the composite strip a4 to form the electrode sheet D. This avoids cutting and manufacturing the electrode sheet, solid electrolyte layer, and frame separately, which helps to improve the manufacturing efficiency and thus improve the overall production efficiency to better meet the production capacity requirements.

[0082] Furthermore, step S10 also includes: using the first dust removal component 124 and the second dust removal component 120 to remove dust from both sides of the electrode strip a2, respectively, to ensure that the cleanliness of the electrode strip a2 reaching the strip composite component 14 meets the process requirements.

[0083] Furthermore, step S10 also includes: using the correction component 129 to correct the electrode strip a2 to ensure that the electrode strip a2 of the strip composite component 14 is aligned with the first frame strip a1 and the second frame strip a3.

[0084] In a specific embodiment, step S30 further includes:

[0085] The composite strip a4 is visually inspected using the third vision inspection component 26. Specifically, after the first release film a5 on the composite strip a4 is wound up using the first release film winding component, the third vision inspection component 26 is used to visually inspect the side of the composite strip a4 that is away from the second release film a6.

[0086] In a specific embodiment, the method further includes the following after step S40:

[0087] The electrode sheet material D is received by the material conveying assembly 25 and conveyed downstream. During the conveying process, the electrode sheet material D is dusted by the third dust removal assembly 23 and visually inspected by the fourth vision inspection assembly 24.

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A solid-state battery fabrication apparatus, characterized in that, include: The composite mechanism (10) includes a first frame unwinding assembly (11), an electrode unwinding assembly (12), a second frame unwinding assembly (13), and a strip composite assembly (14). The first frame unwinding assembly (11), the electrode unwinding assembly (12), and the second frame unwinding assembly (13) are all arranged upstream of the strip composite assembly (14). and The film-making mechanism (20) includes a main drive traction assembly (21) and a cutting assembly (22), wherein the main drive traction assembly (21) is arranged downstream of the strip composite assembly (14) and the cutting assembly (22) is arranged downstream of the main drive traction assembly (21).

2. The solid-state battery fabrication apparatus according to claim 1, characterized in that, The first frame unwinding assembly (11) is used to unwind and output the first frame material strip (a1), the electrode unwinding assembly (12) is used to unwind and output the electrode material strip (a2), the second frame unwinding assembly (13) is used to unwind and output the second frame material strip (a3), and the material strip composite assembly (14) is used to sequentially roll and composite the first frame material strip (a1), the electrode material strip (a2) and the second frame material strip (a3) ​​to form a composite material strip (a4); The main drive traction assembly (21) is used to pull the composite strip (a4) along the path toward the cutting assembly (22), and the cutting assembly (22) is used to cut the composite strip (a4) along the path and form an electrode sheet (D).

3. The solid-state battery fabrication apparatus according to claim 1, characterized in that, The composite mechanism (10) further includes a first release film winding assembly, which is arranged between the downstream of the material strip composite assembly (14) and the upstream of the main drive traction assembly (21) for winding the first release film (a5) on the composite material strip (a4) along the route.

4. The solid-state battery fabrication apparatus according to claim 1, characterized in that, The sheet-making mechanism (20) further includes a second release film winding assembly, which is arranged between the downstream of the material strip composite assembly (14) and the upstream of the main drive traction assembly (21) for winding the second release film (a6) on the composite material strip (a4) along the path.

5. The solid-state battery fabrication apparatus according to claim 1, characterized in that, The film-making mechanism (20) also includes a feeding assembly (25) arranged downstream of the cutting assembly (22).

6. The solid-state battery fabrication apparatus according to claim 5, characterized in that, The film-making mechanism (20) also includes a fourth vision detection component (24), which is arranged on the material feeding path of the material feeding component (25).

7. The solid-state battery fabrication apparatus according to claim 5, characterized in that, The film-making mechanism (20) also includes a third dust removal component (23), which is arranged on the material conveying path of the material conveying component (25).

8. The solid-state battery fabrication apparatus according to claim 5, characterized in that, The material conveying assembly (25) is a vacuum belt conveyor.

9. A solid-state battery fabrication apparatus, characterized in that, It includes a stacking device and a solid-state battery fabrication device as described in any one of claims 1 to 8.

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