Method for manufacturing all-solid-state battery and all-solid-state battery manufactured thereby

Abstract

The present invention relates to a method for manufacturing an all-solid-state battery and an all-solid-state battery manufactured thereby, the method comprising the steps of: (S1) preparing a positive electrode and a negative electrode; (S2) obtaining appearance information of the positive electrode by means of a photographing unit; (S3) preparing a frame surrounding the positive electrode from a plate through the appearance information; and (S4) coupling the prepared frame to the outer circumferential surface of the positive electrode.

Description

Method for manufacturing an all-solid-state battery and an all-solid-state battery manufactured thereby

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2025-0038254 filed on March 25, 2025, and all contents disclosed in the document of said Korean patent application are incorporated herein as part of this specification.

[0002] The present invention relates to a method for manufacturing an all-solid-state battery and an all-solid-state battery manufactured thereby, and more specifically, to a method for manufacturing an all-solid-state battery that can minimize the occurrence of a gap caused by a difference in width or length between a negative electrode and a positive electrode, and an all-solid-state battery manufactured thereby.

[0003]

[0004] With the increasing technological development and demand for mobile devices, rechargeable secondary batteries are being used as an energy source for various mobile devices. Secondary batteries are also attracting attention as an energy source for electric vehicles and hybrid electric vehicles, which are being presented as alternatives to conventional gasoline and diesel vehicles that use fossil fuels.

[0005] Lithium-ion batteries currently on the market use liquid electrolytes and have a structure in which the negative and positive electrodes are separated by a separator. If the separator is damaged by deformation or external impact, a short circuit may occur, which can lead to risks such as overheating or explosion.

[0006] Therefore, all-solid-state batteries using solid electrolytes instead of liquid electrolytes are being proposed. All-solid-state batteries offer enhanced safety compared to lithium-ion batteries using liquid electrolytes, and can improve battery reliability by preventing electrolyte leakage.

[0007] However, all-solid-state batteries using solid electrolytes have lower ionic conductivity compared to liquid electrolytes, and their output characteristics deteriorate, especially at low temperatures. Additionally, compared to liquid electrolytes, it is difficult to form a uniform contact interface between the electrode and the solid electrolyte membrane, and poor contact with the electrode active material leads to increased resistance.

[0008] Generally, to solve this problem, an isotropic pressurization process was performed to bond the interface between the electrode and the solid electrolyte.

[0009] Accordingly, all-solid-state batteries are typically manufactured by sequentially stacking a negative electrode, a solid electrolyte membrane, and a positive electrode, then pre-packaging the unit cells composed of the stacked negative electrode, solid electrolyte membrane, and positive electrode using an aluminum pouch or the like, followed by an isotropic pressurization process. Afterward, the pre-packaged unit cells are unpackaged to check for defects in each unit cell. Subsequently, only the unit cells determined to be good are selected and re-stacking, and finally, the process is carried out through the main-packaging stage.

[0010] At this time, it is pointed out as a disadvantage that the unit cell has a high defect rate during the isotropic pressurization process, such as damage or bending of the edges of the anode or electrode due to gaps caused by differences in width or length between the cathode and the anode.

[0011]

[0012] (Prior Art Literature)

[0013] (Patent Document 1) Korean Published Patent Application No. 10-2024-0052314

[0014]

[0015] To solve the above-mentioned problems, the present invention aims to provide a mold for manufacturing a secondary battery capable of reducing the defect rate of a unit cell in an isotropic pressurization process, and a method for manufacturing an all-solid-state secondary battery using the same.

[0016] In addition, the present invention aims to provide a mold for manufacturing a secondary battery that can further simplify the method for manufacturing an all-solid-state secondary battery, and a method for manufacturing an all-solid-state secondary battery using the same.

[0017]

[0018] As a technical means for achieving the above-mentioned purpose, a method for manufacturing an all-solid-state battery according to one embodiment of the present invention comprises: (S1) a step of preparing a positive electrode (10) and a negative electrode (20); (S2) a step of obtaining external shape information of the positive electrode (10) through a photographing unit (100); (S3) a step of preparing a frame (31) that encloses the positive electrode (10) from a plate (30) through the external shape information; and (S4) a step of attaching the frame (31) prepared on the outer surface of the positive electrode (10).

[0019] In addition, a method for manufacturing an all-solid-state battery according to one embodiment of the present invention further comprises, prior to step (S3), a step of preparing a plate (30) having a width equal to or greater than the width and length of the negative electrode (20) from the external shape information of the negative electrode (20).

[0020] In addition, in the method for manufacturing an all-solid-state battery according to one embodiment of the present invention, the step (S3) is characterized by cutting the plate (30) to prepare the frame (31).

[0021] In addition, the method for manufacturing an all-solid-state battery according to one embodiment of the present invention is characterized in that, in step (S3), a storage space (S) corresponding to the shape of the positive electrode (10) is formed in the frame (31).

[0022] In addition, the method for manufacturing an all-solid-state battery according to one embodiment of the present invention is characterized in that, in step (S4), the positive electrode (10) is inserted into the storage space (S) and combined with the frame (31).

[0023] In addition, in the method for manufacturing an all-solid-state battery according to one embodiment of the present invention, the plate (30) is cut with a laser in step (S3).

[0024] In addition, in the method for manufacturing an all-solid-state battery according to one embodiment of the present invention, the imaging unit (100) is characterized as being a vision camera.

[0025] In addition, in a method for manufacturing an all-solid-state battery according to one embodiment of the present invention, the frame (31) is characterized by having a thickness corresponding to the thickness of the positive electrode (10).

[0026] In addition, the method for manufacturing an all-solid-state battery according to one embodiment of the present invention further comprises the step of (S5) forming a unit cell by stacking the positive electrode (10) combined with the frame (31) on one side of a solid electrolyte (40) stacked on one side of a negative electrode (20).

[0027] In addition, in a method for manufacturing an all-solid-state battery according to one embodiment of the present invention, the positive electrode (10) combined with the frame (31) is characterized by having a width corresponding to the negative electrode (20).

[0028] In addition, a method for manufacturing an all-solid-state battery according to one embodiment of the present invention is characterized by further including the step of (S6) isotropically pressurizing one or more stacked unit cells.

[0029] In addition, the method for manufacturing an all-solid-state battery according to one embodiment of the present invention is characterized by further including a step of stacking one or more unit cells prior to step (S6).

[0030] In addition, in the method for manufacturing an all-solid-state battery according to one embodiment of the present invention, the plate (30) is characterized as being an insulator.

[0031] In addition, the method for manufacturing an all-solid-state battery according to one embodiment of the present invention is characterized by further including the step of transmitting a signal to cut the plate (30) from the external shape information of the positive electrode (10) obtained from the imaging unit (100) in step (S3).

[0032] In addition, the all-solid-state battery according to one embodiment of the present invention is characterized by being manufactured by an all-solid-state manufacturing method according to one embodiment of the present invention.

[0033]

[0034] As described above, according to the method for manufacturing an all-solid-state battery and the all-solid-state battery manufactured thereby, by combining a frame to the outer surface of the positive electrode, the gap caused by the difference in width and length between the positive electrode and the negative electrode is reduced, thereby allowing the unit cell to be uniformly pressed during the isotropic pressing process and minimizing the defect rate caused by bending or damage.

[0035] In addition, according to the method for manufacturing an all-solid-state battery and the all-solid-state battery manufactured thereby, by cutting a plate using external shape information of the positive and negative electrodes to form a frame, it is possible to prepare a frame corresponding to a positive and negative electrodes having various widths and lengths.

[0036]

[0037] FIG. 1 is a flowchart illustrating a method for manufacturing an all-solid-state battery according to the present invention.

[0038] FIG. 2 is a diagram illustrating a method for manufacturing an all-solid-state battery according to the present invention, showing a photographing unit obtaining external shape information of a positive electrode.

[0039] FIG. 3 is a diagram illustrating a method for manufacturing an all-solid-state battery according to the present invention, showing a photographing unit obtaining external shape information of a negative electrode.

[0040] FIG. 4 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a plate prepared with the same width and length as the negative electrode.

[0041] FIG. 5 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a plate prepared having an area exceeding the width and length of a negative electrode.

[0042] FIG. 6 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a frame prepared from a plate through external shape information of a positive electrode and a negative electrode.

[0043] FIG. 7 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a frame attached to the outer surface of a positive electrode.

[0044] FIG. 8 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a unit cell formed.

[0045] Figure 9 is an exploded perspective view of the unit cell shown in Figure 8.

[0046] FIG. 10 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing one or more unit cells stacked.

[0047]

[0048] Embodiments that enable a person skilled in the art to easily implement the present invention are described in detail below with reference to the attached drawings. However, in describing the operating principles of preferred embodiments of the present invention in detail, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the essence of the present invention, such detailed description is omitted.

[0049] In addition, the same reference numerals are used for parts having similar functions and operations throughout the drawings. Throughout the specification, when a part is described as being connected to another part, this includes not only cases where they are directly connected, but also cases where they are indirectly connected with other elements in between. Furthermore, unless specifically stated otherwise, the inclusion of a certain component does not exclude other components but implies that additional components may be included.

[0050]

[0051] Hereinafter, a method for manufacturing an all-solid-state battery according to the present invention and an all-solid-state battery manufactured thereby will be described.

[0052] FIG. 1 is a flowchart illustrating a method for manufacturing an all-solid-state battery according to the present invention.

[0053] Referring to FIG. 1, the method for manufacturing an all-solid-state battery according to the present invention may include: (S1) a step of preparing a positive electrode (10) and a negative electrode (20); (S2) a step of obtaining external shape information of the positive electrode (10) through a photographing unit (100); (S3) a step of preparing a frame (31) that surrounds the positive electrode (10) from a plate (30) through the external shape information; (S4) a step of combining the frame (31) prepared on the outer surface of the positive electrode (10); (S5) a step of forming a unit cell by stacking the positive electrode (10) combined with the frame (31) on one surface of a solid electrolyte (40) stacked on one surface of the negative electrode (20); and (S6) a step of isotropically pressing one or more stacked unit cells.

[0054] FIG. 2 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a photographing unit obtaining external shape information of a positive electrode, and FIG. 3 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a photographing unit obtaining external shape information of a negative electrode.

[0055] With reference to FIGS. 2 and FIGS. 3, steps (S1) and (S2) will first be described in detail. The anode (10) prepared in step (S1) may be provided with a width (W1) and length (L1) that are smaller than the width (W2) and length (L2) of the cathode (20).

[0056] The positive electrode is composed of a positive current collector and a positive active material coated on the upper and lower surfaces of the positive current collector; the positive active material may be mixed with a conductive material and a binder, and a filler may be further added if necessary.

[0057] The positive current collector can generally have a thickness of 3 to 500 μm. Such a positive current collector is not particularly limited as long as it has high conductivity without causing chemical changes in the battery, and for example, stainless steel, aluminum, nickel, titanium, calcined carbon, or aluminum or stainless steel surface-treated with carbon, nickel, titanium, silver, etc. may be used. In addition, the positive current collector may form fine irregularities on its surface to increase the adhesion of the positive active material, and various forms such as films, sheets, foils, nets, porous bodies, foams, and nonwoven fabrics are possible.

[0058] As the positive electrode active material, layered compounds such as lithium cobalt oxide (LiCoO2) or lithium nickel oxide (LiNiO2), or compounds substituted with one or more transition metals; chemical formula Li1+ x Mn2- x Lithium manganese oxides such as O4 (where x is 0 to 0.33), LiMnO3, LiMn2O3, LiMnO2, etc.; lithium copper oxide (Li2CuO2); vanadium oxides such as LiV3O8, V2O5, Cu2V2O7, etc.; chemical formula LiNi1- x M xNi-site type lithium nickel oxide represented by O2 (where M = Co, Mn, Al, Cu, Fe, Mg, B, or Ga, and x = 0.01 ~ 0.3); chemical formula LiMn2- x M x Examples include lithium manganese complex oxides represented by O2 (where M = Co, Ni, Fe, Cr, Zn or Ta and x = 0.01 to 0.1) or Li2Mn3MO8 (where M = Fe, Co, Ni, Cu or Zn); LiMn2O4 in which part of the Li in the chemical formula is substituted with alkaline earth metal ions; disulfide compounds; Fe2(MoO4)3, but are not limited to these.

[0059] The cathode is composed of a cathode current collector and a cathode active material applied to the lower and upper surfaces of the cathode current collector, and a conductive material and a binder may be additionally mixed into the cathode active material and coated onto the cathode current collector.

[0060] The negative electrode current collector is generally made with a thickness of 3 to 500 μm. Such a negative electrode current collector is not particularly limited as long as it has high conductivity without causing chemical changes in the battery, and for example, copper, stainless steel, aluminum, nickel, titanium, calcined carbon, copper or stainless steel surface treated with carbon, nickel, titanium, silver, etc., and aluminum-cadmium alloy may be used. In addition, similar to the positive electrode current collector, fine irregularities may be formed on the surface to strengthen the bonding strength of the negative electrode active material, and it may be used in various forms such as film, sheet, foil, net, porous body, foam, nonwoven fabric, etc.

[0061] Meanwhile, the cathode current collector and the anode current collector are composed of a portion coated with a slurry mixed with an active material and a non-coated portion where the slurry is not coated. The non-coated portion is formed by cutting or by connecting a separate conductive member to the non-coated portion using ultrasonic welding or the like to form an electrode tab, and these electrode tabs are assembled to form a tab bundle.

[0062] (S2) In step, the imaging unit (100) can photograph the anode (10) to obtain information regarding the width (W1) and length (L1) of the anode (10). Additionally, at this time, the imaging unit (100) can also obtain information regarding the thickness of the anode (10). This imaging unit (100) may be equipped with a vision camera, but is not limited thereto and may be equipped with various imaging units capable of obtaining external shape information of the anode (10).

[0063] Additionally, in step (S2), the imaging unit (100) can photograph the cathode (20) to obtain information regarding the width (W2) and length (L2) of the cathode (20), and can also obtain information regarding the thickness of the cathode (20). The imaging unit (100) can obtain external shape information of the anode (10) and the cathode (20) by photographing the anode (10) and the cathode (20) through a single imaging unit, but as another example, the external shape information of the anode (10) and the cathode (20) can be obtained by photographing each of the anode (10) and the cathode (20) through two imaging units.

[0064] The imaging unit (100) can transmit the information obtained by imaging the positive electrode (10) and the negative electrode (20) to the control unit (300), and the control unit (300) can prepare a frame (31) that encloses the positive electrode (10) from the plate (30) in step (S3) using the information obtained in step (S2).

[0065]

[0066] FIG. 4 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a plate prepared with the same width and length as the negative electrode; FIG. 5 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a plate prepared with a width exceeding the width and length of the negative electrode; FIG. 6 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a frame prepared from the plate through the external shape information of the positive electrode and the negative electrode.

[0067] With reference to FIGS. 4 to 6, step (S3) is described in more detail. In step (S3), the control unit (300) can transmit a signal to the cutting unit (200) to cut the plate (30) according to a set shape based on the external shape (10a) information of the anode obtained from the imaging unit (100). At this time, the set shape may be a shape corresponding to the external shape (10a) information of the anode, and the set shape may also be a shape that takes into account the external shape (20a) information of the cathode.

[0068] The plate (30) may be prepared prior to step (S3), and the plate (30) may have a width (W2) and length (L2) equal to or greater than the width (W2) and length (L2) of the cathode (20) based on the external shape (20a) information of the cathode. Additionally, the plate (30) may be provided with a thickness corresponding to the thickness of the anode (10).

[0069] At this time, the plate (30) is provided as an insulator, and more specifically, it may be provided as a material such as PP (Polypropylene), LSR (Liquid Silicone Rubber), epoxy, urethane, etc., but is not particularly limited as long as it is an insulating material that is pressure-resistant and does not undergo shape deformation when isotropically pressurized.

[0070] The plate (30) can be prepared as a frame (31) by cutting along the shape of the anode (10) so that a storage space (S) corresponding to the shape of the anode (10) obtained in step (S2) is formed through the cutting part (200) in step (S3).

[0071] For example, based on the width (W1) and length (L1) information of the anode (10) obtained in step (S2), the cutting part (200) in step (S3) can cut the plate (30) so that a storage space (S) corresponding to the width (W1) and length (L1) of the anode (10) is formed.

[0072] At this time, the storage space (S) may be formed such that the edge of the frame (31) is partially open so that the positive tab portion (11) of the positive electrode (10) protrudes from the edge of the frame (31). For example, the storage space (S) may be formed such that a width corresponding to the positive tab portion (11) is formed with respect to the center of one edge of the frame (31) so that the positive tab portion (11) protrudes from one edge of the frame (31), and a space corresponding to the width (W1) and length (L1) of the positive electrode (10) is formed with respect to the center of the frame (31).

[0073] In addition, as another example, the storage space (S) may be formed with a width corresponding to the width (W1) of the anode (10) on one edge of the frame (31), and this width may be extended to the other side by the length (L1) of the anode (10).

[0074] Additionally, in step (S3), the plate (30) can be prepared as a frame (31) by cutting along the shape of the cathode (20) through the cutting section (200) so as to have an outer shape corresponding to the shape of the cathode (20) obtained in step (S2). For example, based on the width (W2) and length (L2) information of the cathode (20) obtained in step (S2), the cutting section in step (S3) can cut the plate (30) so that the outer shape of the plate (30) has the width (W2) and length (L2) of the cathode (20). At this time, the length (L2) of the cathode (20) may be the length (L2) of the cathode (20) excluding the cathode tab section (21).

[0075] The cutting unit (200) may be equipped with a laser unit that irradiates a laser. Additionally, as another example, the cutting unit (200) may be equipped with a knife unit with a sharp end.

[0076]

[0077] FIG. 7 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a frame attached to the outer surface of a positive electrode.

[0078] Referring to FIG. 7, step (S4) is described as follows: the frame (31) prepared through step (S3) can be coupled to the outer surface of the anode (10). More specifically, through step (S3), a storage space (S) corresponding to the anode (10) is formed in the frame (31), and in step (S4), the anode (10) can be inserted into the storage space (S) of the frame (31) and coupled to the frame (31).

[0079] At this time, as previously explained, when the positive electrode (10) is inserted into the storage space (S) of the frame (31), the positive electrode tab portion (11) can be inserted and coupled in a position such that it protrudes from one side of the edge of the frame (31).

[0080] Additionally, by step (S3), it may have a width (W2) and a length (L2) corresponding to the cathode (20). Accordingly, the anode (10) combined with the frame (31) may have a width (W2) and a length (L2) corresponding to the cathode (20), and thus may have a width corresponding to the cathode (20).

[0081] In addition, the frame (31) has a thickness corresponding to the thickness of the anode (10), thereby preventing a short circuit caused by the difference in thickness between the frame (31) and the anode (10) and preventing a gap from occurring between the anode (10) and the cathode (20).

[0082]

[0083] FIG. 8 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing a unit cell formed, and FIG. 9 is an exploded perspective view of the unit cell shown in FIG. 8.

[0084] Referring to FIGS. 8 and FIGS. 9, step (S5) can be described as follows: In step (S5), the anode (10) combined with the frame (31) through step (S4) can be stacked on one side of the solid electrolyte (40) stacked on one side of the cathode (20) to form a unit cell. In other words, in step (S5), the cathode (20), the solid electrolyte (40), and the anode (10) combined with the frame (31) can be sequentially stacked on one side to form a unit cell.

[0085] Here, the solid electrolyte (40) may be provided as a solid electrolyte made of a polymer-based, sulfide-based, or oxide-based material, and as another example, may be provided as a composite solid electrolyte mixed with a polymer and a ceramic.

[0086] Also, in step (S5), when forming a unit cell, the positive electrode (10) and the negative electrode (20) combined with the frame (31) may be arranged such that the tab portions (11, 21) are located in opposite directions, but are not limited thereto and may be arranged such that they are located in the same direction.

[0087] The unit cell refers to a monocell, a Type A bicell, a Type C bicell, and a halfcell, but may include all various cells not mentioned above. As previously described, the unit cell may be formed as a monocell in which a cathode (20), a solid electrolyte (40), and an anode (10) combined with a frame (31) are sequentially stacked.

[0088] In addition, as another example, the unit cell may be formed as a Type A bicell in which an anode (10), a solid electrolyte (40), a cathode (20), a solid electrolyte (40), and an anode (10) are sequentially stacked from top to bottom.

[0089] In addition, as another example, the unit cell may be formed as a C-type bicell in which a cathode (20), a solid electrolyte (40), an anode (10), a solid electrolyte (40), and a cathode (20) are sequentially stacked from top to bottom.

[0090] As another example, the unit cell may be formed as a half cell in which a negative electrode (20) or an anode (10) is interposed between a pair of solid electrolytes (40), that is, a solid electrolyte (40), a negative electrode (20) and a solid electrolyte (40), or a solid electrolyte (40), an anode (10) and a solid electrolyte (40) are sequentially stacked from top to bottom.

[0091] The cathode (20), solid electrolyte (40), and anode (10) constituting the A-type bicell, C-type bicell, or halfcell are the same as the aforementioned cathode (20), solid electrolyte (40), and anode (10), and since the anode (10) is combined with the frame (31), a redundant description will be omitted.

[0092] Meanwhile, the unit cell is not limited to the aforementioned form and may also include a stack form in which a cathode (20), a solid electrolyte (40), an anode (10) combined with a frame (31), a solid electrolyte (40), a cathode (20), a solid electrolyte (40), an anode (10) combined with a frame (31), and a cathode (20) are stacked in that order, or the same is repeatedly stacked.

[0093] FIG. 10 is a drawing for explaining a method for manufacturing an all-solid-state battery according to the present invention, showing one or more unit cells stacked.

[0094] Referring to FIG. 10, in step (S6), one or more unit cells formed through step (S5) can be isotropically pressed. At this time, in order to isotropically press one or more unit cells formed through step (S5) in step (S6), an additional step of stacking one or more unit cells formed through step (S5) can be performed prior to step (S6).

[0095] Isostatic pressing can be carried out using the Warm Isostatic Pressing (WIP) method. For example, Warm Isostatic Pressing (WIP) can be performed at a temperature between 45°C and 100°C so that the electrode constituent material is thermally stable and the interfacial contact between electrodes is well formed by the molding of the solid electrolyte.

[0096] For example, isotropic pressurization can be carried out with a pressure of 4,000 bar or more and 7,000 bar or less, and preferably with a pressure of about 5,000 bar.

[0097] (S6) The isostatic pressing performed in this step is not limited to this method and can be performed using a hot isostatic pressing (HIP) method or a cold isostatic pressing (CIP) method.

[0098] A frame (31) is positioned over the gap caused by the difference in width and length between the cathode (20) and the anode (10), so that the unit cell can be uniformly pressed during the isotropic pressing process in step (S6), and bending or damage to the electrode edge caused by the gap can be prevented, thereby minimizing the defect rate of the unit cell.

[0099] Although a method of isotropically pressurizing a plurality of unit cells stacked with reference to FIG. 10 has been described, it is also possible to isotropically press each unit cell and then stack them. That is, unit cells stacked in the order of the cathode, solid electrolyte, and anode as shown in FIG. 8 can be isotropically pressurized.

[0100] Meanwhile, the control unit (300) can not only control the cutting unit (200) through the external shape information of the anode (10) and / or cathode (20) obtained through the imaging unit (100), but also perform overall control so that the imaging unit (100) and the cutting unit (200) according to the present invention can perform their functions normally.

[0101] This control unit (300) may be implemented in the form of hardware or software, or may be implemented in a combined form of hardware and software. The control unit may be implemented in the form of a computing device (computation device) such as a microprocessor, but is not limited thereto and may be implemented in various forms that are obvious to those skilled in the art.

[0102] Additionally, the control unit (300) can determine the information obtained through the shooting unit (100) in real time and transmit an abnormal signal of the positive electrode (10) and / or negative electrode (20) to the operator, and can display such a signal on an equipment monitor (e.g., a display unit) or transmit it to the operator's terminal (e.g., a mobile phone).

[0103]

[0104] A solid-state battery manufactured by a solid-state battery manufacturing method according to one embodiment of the present invention is described.

[0105] Referring to FIGS. 8 to 10, the all-solid-state battery may include a unit cell and a battery case (not shown) in which a negative electrode (20), a solid electrolyte (40), and a positive electrode (10) combined with a frame (31) are sequentially stacked. One or more unit cells may be stacked and housed in the battery case (not shown).

[0106]

[0107] As specific parts of the present invention have been described in detail above, it is obvious to those skilled in the art that such specific descriptions are merely preferred embodiments and do not limit the scope of the invention, and that various changes and modifications are possible within the scope and spirit of the invention, and that such variations and modifications fall within the scope of the appended claims.

[0108] (Explanation of symbols)

[0109] 10: Anode 10a: Appearance of the anode

[0110] 11: Positive tab

[0111] 20: Cathode 20a: External shape of the cathode

[0112] 21: Cathode tab

[0113] 30: Plate 31: Frame

[0114] 40: Solid electrolyte

[0115] 100: Filming Department

[0116] 200: Cutting section

[0117] 300: Control unit

[0118] S: Storage space

Claims

1. (S1) Step of preparing the positive and negative electrodes; (S2) A step of obtaining external shape information of the anode through a shooting unit; (S3) A step of preparing a frame (31) that encloses the anode from the plate using the above external shape information; and (S4) A step of joining the frame prepared on the outer surface of the anode; characterized by a method for manufacturing an all-solid-state battery.

2. In Paragraph 1, A method for manufacturing an all-solid-state battery, characterized by further including the step of preparing a plate having a width equal to or greater than the width and length of the cathode from the external shape information of the cathode prior to the above step (S3).

3. In Paragraph 2, A method for manufacturing an all-solid-state battery characterized by cutting the plate to prepare the frame in the above step (S3).

4. In Paragraph 3, A method for manufacturing an all-solid-state battery, characterized in that, in step (S3) above, a storage space corresponding to the shape of the positive electrode is formed in the frame.

5. In Paragraph 4, A method for manufacturing an all-solid-state battery, characterized in that, in step (S4) above, the positive electrode is inserted into the storage space and combined with the frame.

6. In Paragraph 3, A method for manufacturing an all-solid-state battery characterized by cutting the plate with a laser in step (S3) above.

7. In Paragraph 2, A method for manufacturing an all-solid-state battery characterized in that the above-mentioned imaging unit is a vision camera.

8. In Paragraph 2, A method for manufacturing an all-solid-state battery characterized in that the above-described frame is provided with a thickness corresponding to the thickness of the above-described anode.

9. In Paragraph 2, (S5) A step of forming a unit cell by stacking the anode combined with the above frame onto one side of a solid electrolyte stacked on one side of a negative electrode; further comprising a method for manufacturing an all-solid-state battery.

10. In Paragraph 9, A method for manufacturing an all-solid-state battery characterized in that the positive electrode combined with the above frame has an area corresponding to the negative electrode.

11. In Paragraph 9, (S6) A step of isotropically pressurizing one or more stacked unit cells; further comprising a method for manufacturing an all-solid-state battery.

12. In Paragraph 11, A method for manufacturing an all-solid-state battery characterized by further including, prior to the above (S6) step, a step of stacking one or more of the above unit cells.

13. In Paragraph 2, A method for manufacturing an all-solid-state battery characterized in that the above-described plate is an insulator.

14. In Paragraph 3, A method for manufacturing an all-solid-state battery, characterized by further including, in the above step (S3), a step of transmitting a signal to cut the plate from the external shape information of the anode obtained from the imaging unit.

15. An all-solid-state battery manufactured by the all-solid-state battery manufacturing method described in any one of claims 1 to 14.

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