Apparatus for manufacturing all-solid-state battery and method for manufacturing all-solid-state battery using same

Abstract

The present invention relates to an apparatus for manufacturing an all-solid-state battery, and more specifically comprises: a stacking unit which forms a stacked sheet by stacking a positive electrode body and a negative electrode body on an adhesive sheet; an inverting unit which vertically inverts the stacked sheet; a transfer unit which transfers, in one direction, the stacked sheet that has been inverted by the inverting unit; and a pressing unit which roll-presses the stacked sheet that is transferred by the transfer unit.

Description

All-solid-state battery manufacturing apparatus and all-solid-state battery manufacturing method using the same

[0001] The present invention relates to an apparatus for manufacturing an all-solid-state battery and a method for manufacturing an all-solid-state battery using the same.

[0002]

[0003] Recently, driven by industrial demands, the development of batteries with high energy density and safety is actively underway. For example, lithium-ion batteries are being commercialized not only in the fields of information and communication devices but also in the automotive sector. In the automotive sector, safety is considered particularly important because it is directly related to human life.

[0004] Recently, all-solid-state batteries in which liquid electrolytes are replaced with solid electrolytes have been proposed. By not using flammable organic dispersion media, all-solid-state batteries can significantly reduce the likelihood of fire or explosion in the event of a short circuit. Therefore, these all-solid-state batteries can offer significantly higher safety compared to lithium-ion batteries that use liquid electrolytes.

[0005]

[0006] The problem that the present invention aims to solve is to provide a manufacturing apparatus that continuously drives a pressure roller during the manufacturing of a sheet-type all-solid-state battery.

[0007] Another problem that the present invention aims to solve is to provide a device for continuously feeding adhesive sheets on which all-solid-state batteries are assembled.

[0008] Another problem that the present invention aims to solve is to provide a method for efficiently manufacturing an all-solid-state battery through a series of continuous processes using the all-solid-state battery manufacturing apparatus described above.

[0009]

[0010] A solid-state battery manufacturing apparatus according to an embodiment of the present invention may include: a stacking unit configured to form a stacked sheet by stacking a positive electrode and a negative electrode on an adhesive sheet; an inversion unit configured to invert the upper and lower sides of the stacked sheet; a transfer unit configured to transfer the stacked sheet inverted by the inversion unit in one direction; and a pressurizing unit configured to roll press the stacked sheet transferred through the transfer unit.

[0011] A method for manufacturing an all-solid-state battery according to another embodiment of the present invention may include: forming a laminated sheet by laminating a positive electrode and a negative electrode on an adhesive sheet; inverting the laminated sheet vertically using an inversion unit; feeding the vertically inverted laminated sheet into a transfer unit and transporting it in one direction; and rolling-pressing the laminated sheet fed into the transfer unit with a pressure roller.

[0012]

[0013] The all-solid-state battery manufacturing apparatus according to the present invention can continuously feed a sheet-type adhesive sheet into a pressure roller, thereby enabling the efficient manufacturing of an all-solid-state battery.

[0014] The method for manufacturing an all-solid-state battery according to the present invention can efficiently manufacture an all-solid-state battery through a series of continuous processes by using the all-solid-state battery manufacturing apparatus described above.

[0015]

[0016] FIG. 1 is a cross-sectional view of an all-solid-state battery according to one embodiment of the present invention.

[0017] FIG. 2 is a plan view of an all-solid-state battery according to one embodiment of the present invention.

[0018] FIGS. 3 and FIGS. 4 are conceptual diagrams of an all-solid-state battery manufacturing apparatus according to one embodiment of the present invention.

[0019] FIG. 5 is a plan view of a gasket sheet according to one embodiment of the present invention.

[0020] FIG. 6 is a perspective view of an adhesive sheet according to one embodiment of the present invention.

[0021] FIGS. 7a to 7d are conceptual diagrams illustrating the lamination of an all-solid-state battery on an adhesive sheet according to one embodiment of the present invention.

[0022] FIGS. 8a to 8e are conceptual diagrams illustrating the lamination of an all-solid-state battery on an adhesive sheet according to another embodiment of the present invention.

[0023] FIG. 9a is a conceptual diagram showing an inversion part according to one embodiment of the present invention.

[0024] FIGS. 9b and FIGS. 9c are front views of a laminated sheet according to one embodiment of the present invention.

[0025] FIGS. 10 and FIGS. 11 are a perspective view and a front view showing a transfer unit according to one embodiment of the present invention.

[0026] FIG. 12 is a conceptual diagram showing a transfer unit according to another embodiment of the present invention.

[0027] FIG. 13 is a perspective view of an all-solid-state battery manufacturing apparatus according to one embodiment of the present invention.

[0028] FIG. 14 is a front view of an all-solid-state battery manufacturing apparatus according to one embodiment of the present invention.

[0029] FIG. 15 is a flowchart illustrating a method for manufacturing an all-solid-state battery according to one embodiment of the present invention.

[0030]

[0031] In order to fully understand the structure and effects of the present invention, preferred embodiments of the present invention are described with reference to the attached drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms and various modifications can be made. The description of these embodiments is provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention.

[0032] In this specification, when a component is described as being on another component, it means that it may be formed directly on the other component or that a third component may be interposed between them. Additionally, in the drawings, the thicknesses of the components are exaggerated for the effective description of the technical content. Throughout the specification, parts indicated by the same reference numeral represent the same components.

[0033] The embodiments described herein will be described with reference to cross-sectional and / or plan views, which are exemplary illustrations of the invention. In the drawings, the thicknesses of films and regions are exaggerated for effective description of the technical content. Accordingly, the regions illustrated in the drawings are schematic in nature, and the shapes of the regions illustrated in the drawings are intended to illustrate specific forms of regions of the device and are not intended to limit the scope of the invention. Although terms such as first, second, third, etc., have been used to describe various components in the various embodiments of this specification, these components should not be limited by such terms. These terms are used merely to distinguish one component from another. The embodiments described and illustrated herein also include their complementary embodiments.

[0034] The terms used herein are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used herein, 'comprises' and / or 'comprising' do not exclude the presence or addition of one or more other components to the mentioned components.

[0035]

[0036] FIG. 1 is a cross-sectional view of an all-solid-state battery according to one embodiment of the present invention. FIG. 2 is a plan view of an all-solid-state battery according to one embodiment of the present invention.

[0037] Referring to FIG. 1, an all-solid-state battery (10) according to one embodiment may include a positive electrode layer (100), a negative electrode layer (200) facing the positive electrode layer (100), and a solid electrolyte layer (300) disposed between the positive electrode layer (100) and the negative electrode layer (200). However, not limited thereto, the all-solid-state battery (10) may further include an additional functional layer, such as an adhesion-enhancing layer, disposed between the positive electrode layer (100) and the solid electrolyte layer (300) or between the negative electrode layer (200) and the solid electrolyte layer (300).

[0038] In one embodiment, the anode layer (100) may include an anode current collector (110) and an anode active material layer (120) disposed on the anode current collector (110). Although not illustrated, the anode active material layer (120) may include an anode active material, a solid electrolyte, a conductive material, and a binder.

[0039] The positive current collector (110) can provide a reference surface on which the positive active material layer (120) is placed. The positive current collector (110) may include, for example, a plate or foil comprising indium (In), copper (Cu), magnesium (Mg), stainless steel, titanium (Ti), iron (Fe), cobalt (Co), nickel (Ni), zinc (Zn), aluminum (Al), germanium (Ge), lithium (Li), or an alloy thereof.

[0040] Meanwhile, unlike as illustrated in FIG. 1, the positive current collector (110) may be omitted in one embodiment of the present invention. Although not illustrated, a carbon layer with a thickness of 0.1 μm to 4 μm may be further disposed between the positive current collector (110) and the positive active material layer (120) to increase the bonding strength between the positive current collector (110) and the positive active material layer (120).

[0041] The positive electrode active material may include a material capable of reversibly absorbing and desorbing lithium ions. The positive electrode active material may include a plurality of particles. The positive electrode active material may include, for example, lithium transition metal oxides such as lithium cobalt oxide (LCO), lithium nickel oxide, lithium nickel cobalt oxide, lithium nickel cobalt aluminum oxide (NCA), lithium nickel cobalt manganese oxide (NCM), lithium manganate, and lithium iron phosphate, nickel sulfide, copper sulfide, lithium sulfide, iron oxide, or vanadium oxide, but is not necessarily limited to these. Each positive electrode active material may be a single material or a mixture of two or more materials.

[0042] Lithium transition metal oxides are, for example, Li a A 1-b B b D2(0.90≤a≤1, 0≤b≤0.5), Li a E 1-b B b O 2-c D c (0.90≤a≤1, 0≤b≤0.5, 0≤c≤0.05), LiE 2-b B b O 4-c D c (0≤b≤0.5, 0≤c≤0.05), Li a Ni 1-b-c Co b B c D α (0.90≤a≤1, 0≤b≤0.5, 0≤c≤0.05, 0<α<2), Li a Ni 1-b-c Co b B c O 2-α F α (0.90≤a≤1, 0≤b≤0.5, 0≤c≤0.05, 0<α<2), Li a Ni 1-b-c Mn bB c D α (0.90≤a≤1, 0≤b≤0.5, 0≤c≤0.05, 0<α≤2), Li a Nor 1-b-c Mn b B c O 2-α F α (0.90≤a≤1, 0≤b≤0.5, 0≤c≤0.05, 0<α<2), Li a Nor b E c G d O2(0.90≤a≤1, 0≤b≤0.9, 0≤c≤0.5, 0.001≤d≤0.1), Li a Nor b Co c Mn d G e O2(0.90≤a≤1, 0≤b≤0.9, 0≤c≤0.5, 0≤d≤0.5, 0.001≤e≤0.1), Li a NiG b O2(0.9≤a≤1, 0.001≤b≤0.1), Li a CoG b O2(0.90≤a≤1, 0.001≤b≤0.1), Li a MnG b O2(0.90≤a≤1, 0.001≤b≤0.1), Li a Mn2G b O4(0.90≤a≤1, 0.001≤b≤0.1), QO2, QS2, LiQS2, V2O5, LiV2O5, LiIO2, LiNiVO4, Li 3-f J2(PO4)3(0≤f≤2), Li 3-fIt is a compound represented by any one of Fe2(PO4)3 (0≤f≤2) or LiFePO4. In such compounds, the uppercase “A” is Ni, Co, Mn, or a combination thereof; the uppercase “B” is Al, Ni, Co, Mn, Cr, Fe, Mg, Sr, V, a rare earth element, or a combination thereof; the uppercase “D” is O, F, S, P, or a combination thereof; the uppercase “E” is Co, Mn, or a combination thereof; the uppercase “F” is F, S, P, or a combination thereof; the uppercase “G” is Al, Cr, Mn, Fe, Mg, La, Ce, Sr, V, or a combination thereof; the uppercase “Q” is Ti, Mo, Mn, or a combination thereof; the uppercase “I” is Cr, V, Fe, Sc, Y, or a combination thereof; and the uppercase “J” is V, Cr, Mn, Co, Ni, Cu, or a combination thereof.

[0043] The positive electrode active material may include, for example, a lithium salt of a transition metal oxide having a layered rock salt type structure among the lithium transition metal oxides described above. The "layered rock salt type structure" is, for example, a cubic rock salt type structure. <111> It is a structure in which oxygen and metal atomic layers are alternately and regularly arranged in a specific direction, thereby forming a two-dimensional plane for each atomic layer. The "cubic rock salt type structure" represents a sodium chloride (NaCl type) structure, which is a type of crystal structure; specifically, it exhibits a structure in which face-centered cubic lattices (fcc) formed by cations and anions, respectively, are offset from each other by half the ridge of the unit lattice. Lithium transition metal oxides having such a layered rock salt type structure are, for example, LiNi x Co y Al z O2(NCA) or LiNi x Co y Mn zO2(NCM) (0 <x<1,0<y<1, 0<z<1, x+y+z=1) 등의 삼원계 리튬전이금속산화물일 수 있다. 양극 활물질이 층상암염형 구조를 갖는 삼원계 리튬전이금속산화물을 포함하는 경우, 전고체 전지(10)의 에너지 밀도가 커지고 열안정성이 향상될 수 있다.

[0044] The aforementioned compound contained in the positive electrode active material may be covered by a coating layer (not shown). The positive electrode active material may also be a mixture of the aforementioned compound and the compound to which the coating layer is added. Meanwhile, the coating layer added to the surface of the positive electrode active material may include, for example, oxides, hydroxides, oxyhydroxides, oxycarbonates, or hydroxycarbonates of the following coating elements. The compounds forming this coating layer are amorphous or crystalline. The coating elements included in the coating layer may include Mg, Al, Co, K, Na, Ca, Si, Ti, V, Sn, Ge, Ga, B, As, Zr, or mixtures thereof. The coating layer may include, for example, Li2O-ZrO2 (LZO). The method for forming the coating layer is selected within a range that does not adversely affect the physical properties of the positive electrode active material. The method for forming the coating layer is, for example, spray coating or immersion.

[0045] When the positive electrode active material contains nickel (Ni) as a ternary lithium transition metal oxide such as NCA or NCM, for example, the capacity density of the all-solid-state battery (10) is increased, and the metal leaching of the positive electrode active material in the charged state can be reduced. As a result, the cycle characteristics of the all-solid-state battery (10) in the charged state are improved. Meanwhile, "cycle characteristics" is a characteristic that indicates the degree of deterioration of the all-solid-state battery (10) due to charging and discharging of the all-solid-state battery (10). An all-solid-state battery (10) with high cycle characteristics has a small degree of deterioration due to charging and discharging, while an all-solid-state battery (10) with low cycle characteristics may have a large degree of deterioration due to charging and discharging.

[0046] The positive active material may have a particle shape such as a sphere or an ellipsoid. The particle size and content of the positive active material are not particularly limited. In one embodiment, the positive active material is in the form of a polycrystalline structure and may include secondary particles formed by the aggregation of at least two primary particles. In other words, a single first particle may include a plurality of primary particles (NNP) aggregated together. The first particle may have a spherical or elliptical shape.

[0047] A solid electrolyte may be dispersed between the cathode active materials. The solid electrolyte dispersed between the cathode active materials may have a particulate form. The solid electrolyte dispersed between the cathode active materials may include a sulfide-based solid electrolyte with excellent lithium ion conductivity characteristics. Sulfide-based solid electrolytes are, for example, Li2S-P2S5, Li2S-P2S5-LiX (where X is a halogen element), Li2S-P2S5-Li2O, Li2S-P2S5-Li2O-LiI, Li2S-SiS2, Li2S-SiS2-LiI, Li2S-SiS2-LiBr, Li2S-SiS2-LiCl, Li2S-SiS2-B2S3-LiI, Li2S-SiS2-P2S5-LiI, Li2S-B2S3, and Li2S-P2S5-Z m S n (m, n are positive numbers, uppercase “Z” is one of Ge, Zn, or Ga), Li2S-GeS2, Li2S-SiS2-Li3PO4, Li2S-SiS2-Li p MO q (p, q are positive numbers, uppercase “M” is one of P, Si, Ge, B, Al, Ga, In), Li 7-x PS 6-x Cl x (0≤x≤2), Li 7-x PS 6-x Br x (0≤x≤2), and Li 7-x PS 6-x I xIt may include at least one selected from (0≤x≤2).

[0048] Sulfide-based solid electrolytes are, for example, Li 7-x PS 6-x Cl x (0≤x≤2), Li 7-x PS 6-x Br x (0≤x≤2), and Li 7-x PS 6-x I x It may be an argyrodite-type compound comprising one or more selected from (0≤x≤2). In particular, the sulfide-based solid electrolyte may be an argyrodite-type compound comprising one or more selected from Li6PS5Cl, Li6PS5Br, and Li6PS5I. The density of the argyrodite-type solid electrolyte may be 1.5 g / cc to 2.0 g / cc. By having a density of 1.5 g / cc or higher for the argyrodite-type solid electrolyte, the internal resistance of the all-solid-state battery is reduced, and defects such as penetration and short circuit of the solid electrolyte film due to lithium dendrite formation can be prevented. The elastic modulus of the solid electrolyte may be, for example, 15 GPa to 35 GPa.

[0049] The solid electrolyte in the positive active material layer (120) may have a smaller average particle size (D50) of intermediate particle size compared to the solid electrolyte in the solid electrolyte layer (300) described later. For example, the average particle size (D50) of the solid electrolyte included in the positive active material layer (120) may be 90% or less, 80% or less, 70% or less, 60% or less, 50% or less, 40% or less, 30% or less, or 20% or less of the average particle size (D50) of the solid electrolyte included in the solid electrolyte layer (300). Meanwhile, the average particle size (D50) may be a median diameter measured using a laser particle size distribution meter.

[0050] The positive active material layer (120) may include a conductive material. The conductive material may have conductivity without causing chemical changes in the all-solid-state battery (10), thereby increasing the conductivity of the positive active material and the solid electrolyte. The conductive material may include a carbon-based material. The conductive material may include, for example, one or more selected from graphite, carbon black, acetylene black, carbon nanofibers, and carbon nanotubes.

[0051] The positive active material layer (120) may further include a binder. The binder may bind the positive active material, solid electrolyte, and conductive material within the positive active material layer (120) together. The binder may include a material to improve the bonding strength between the positive active material layer (120) and the positive current collector (110). The binder may include, for example, polyvinylidene fluoride, styrene butadiene rubber (SBR), polytetrafluoroethylene, polyvinylidene fluoride, vinylidene fluoride / hexafluoropropylene copolymer, polyacrylonitrile, and polymethyl methacrylate.

[0052] Based on 100 parts by weight of the total positive active material, solid electrolyte, conductive material, and binder, the positive active material layer (120) may contain 85 parts by weight or more and 92 parts by weight or less of the positive active material. Based on 100 parts by weight of the total positive active material, solid electrolyte, conductive material, and binder, the positive active material layer (120) may contain 0.5 parts by weight or more and 1.5 parts by weight or less of the binder.

[0053] Based on 100 parts by weight of solid electrolyte within the positive active material layer (120), the positive active material layer (120) may contain 1 part by weight or more and 50 parts by weight or less of a conductive material. If the conductive material is included in the positive active material layer (120) in an amount less than 1 part by weight based on 100 parts by weight of solid electrolyte within the positive active material layer (120), the proportion of the conductive material decreases, and the electrical conductivity of the positive active material layer (120) may decrease. If the conductive material is included in the positive active material layer (120) in an amount exceeding 50 parts by weight based on 100 parts by weight of solid electrolyte within the positive active material layer (120), the proportion of the conductive material is excessively high, and a coating layer covering the surface of the solid electrolyte may not be properly formed.

[0054] The positive active material layer (120) may further include additives such as fillers, coating agents, dispersants, and ion conductivity aids in addition to the positive active material, solid electrolyte, conductive material, and binder described above.

[0055] The negative electrode layer (200) may include a negative electrode current collector (210) and a negative electrode coating layer (220) on the negative electrode current collector (210). The negative electrode current collector (210) may provide a reference surface on which the negative electrode coating layer (220) is placed. The negative electrode current collector (210) may include, for example, a material that does not react with lithium, that is, does not form any alloys or compounds with lithium. For example, the negative electrode current collector (210) may include at least one metal selected from the group consisting of copper (Cu), stainless steel, titanium (Ti), iron (Fe), cobalt (Co), and nickel (Ni). The thickness of the negative electrode current collector (210) may be 1 μm to 20 μm, more specifically 5 μm to 15 μm, and more specifically 7 μm to 10 μm.

[0056] The negative current collector (210) may be composed of one of the metals described above, or may include an alloy of two or more metals or a coating material. The negative current collector (210) may, for example, have a plate-like or foil-like shape. Meanwhile, in one embodiment, the negative current collector (210) may be omitted.

[0057] The negative electrode coating layer (220) can allow lithium metal to grow between the all-solid-state battery (10) and the negative electrode current collector (210) during charging. The negative electrode coating layer (220) can serve as a protective layer for the lithium metal and simultaneously suppress the precipitation and growth of lithium dendrites.

[0058] The cathode coating layer (220) may include metal and carbon. For example, the cathode coating layer (220) may include at least one metal selected from the group consisting of gold (Au), platinum (Pt), palladium (Pd), silicon (Si), silver (Ag), aluminum (Al), bismuth (Bi), tin (Sn), and zinc (Zn). The cathode coating layer (220) may include at least one carbon selected from the group consisting of carbon black, acetylene black, furnace black, ketjen black, and graphene. In one embodiment, the cathode coating layer (220) may include a mixture of carbon black and silver (Ag).

[0059] The cathode coating layer (220) may further include other additives in addition to metal and carbon. The cathode coating layer (220) may further include at least one additive selected from the group consisting of, for example, binders, fillers, coating agents, dispersants, and ion-conducting aids.

[0060] The negative electrode coating layer (220) may have a smaller thickness compared to the positive electrode active material layer (120). The thickness of the negative electrode coating layer (220) may be, for example, 50% or less, 40% or less, 30% or less, 20% or less, 10% or less, or 5% or less of the thickness of the positive electrode active material layer (120). The thickness of the negative electrode coating layer (220) may be, for example, 1 μm to 20 μm, 2 μm to 10 μm, or 3 μm to 7 μm. If the thickness of the negative electrode coating layer (220) is excessively thin, lithium dendrites formed between the negative electrode coating layer (220) and the negative electrode current collector (210) may cause the negative electrode coating layer (220) to collapse, thereby degrading the cycle characteristics of the all-solid-state battery (10). If the thickness of the negative electrode coating layer (220) increases excessively, the energy density of the all-solid-state battery (10) decreases, and the internal resistance of the all-solid-state battery (10) due to the negative electrode coating layer (220) increases, which may degrade the cycle characteristics of the all-solid-state battery (10).

[0061] Meanwhile, although not illustrated, a carbon layer may be further included to improve adhesion between the cathode coating layer (220) and the solid electrolyte layer (300).

[0062] A solid electrolyte layer (300) may be provided between the anode layer (100) and the cathode layer (200). The solid electrolyte layer (300) may include a sulfide-based solid electrolyte with excellent lithium ion conductivity characteristics. The solid electrolyte in the solid electrolyte layer (300) may be the same as or different from any one of the materials included in the solid electrolyte in the aforementioned anode active material layer (120).

[0063] The solid electrolyte layer (300) may include a first solid electrolyte layer (310) and a second solid electrolyte layer (320). The first solid electrolyte layer (310) may be adjacent to the anode layer (100), and the second solid electrolyte layer (320) may be adjacent to the cathode layer (200).

[0064] The second solid electrolyte layer (320) can be in direct contact with the negative electrode coating layer (220). By doing so, the second solid electrolyte layer (320) can suppress lithium dendrites formed between the negative electrode coating layer (220) and the negative electrode current collector (210). The second solid electrolyte layer (320) can effectively suppress negative side reactions. By doing so, the cell performance of the all-solid-state battery (10) according to the present invention can be improved.

[0065] The solid electrolyte in the solid electrolyte layer (300) may have particle shapes such as spheres or ellipsoids.

[0066] The solid electrolyte in the solid electrolyte layer (300) may include a sulfide-based solid electrolyte. The solid electrolyte in the solid electrolyte layer (300) may be amorphous, crystalline, or a mixture thereof. Additionally, the solid electrolyte may include sulfur (S), phosphorus (P), and lithium (Li) as at least constituent elements among the sulfide-based solid electrolyte materials described above, for example. For example, the solid electrolyte may be a material containing Li2S-P2S5. When using a sulfide-based solid electrolyte material containing Li2S-P2S5 to form the solid electrolyte, the molar ratio of Li2S and P2S5 is, for example, in the range of Li2S : P2S5 = 50 : 50 to 90 : 10.

[0067] In one embodiment, the solid electrolyte in the solid electrolyte layer (300) is Li 7-a M a PS 6-c X c It may be an argyrodite-type compound containing . Here, X may be Cl, Br, or a combination thereof. M may be Na, K, Fe, Mg, Ca, Ag, Cu, Zr, Zn, or a combination thereof. a and c may each be a real number between 0 and 2.

[0068] The density of the azyrodite-type solid electrolyte may be 1.5 g / cc to 2.0 g / cc. By having a density of 1.5 g / cc or higher for the azyrodite-type solid electrolyte, the internal resistance of the all-solid-state battery is reduced, and defects such as penetration and short circuit of the solid electrolyte film due to lithium dendrite formation can be prevented. The elastic modulus of the solid electrolyte in the solid electrolyte layer (300) is, for example, 15 GPa to 35 GPa.

[0069] The solid electrolyte layer (300) may further include a binder. The binder included in the solid electrolyte layer (300) is, for example, styrene butadiene rubber (SBR), polytetrafluoroethylene, polyvinylidene fluoride, polyethylene, etc., but is not limited to these. The binder of the solid electrolyte layer (300) may be the same as or different from the binder included in the positive electrode active material layer (120) or the binder included in the negative electrode coating layer (220).

[0070] Referring again to FIG. 1, the first solid electrolyte layer (310) may have a first thickness (t1), and the second solid electrolyte layer (320) may have a second thickness (t2). The solid electrolyte layer (300) may have a third thickness (T). The first thickness (t1) and the second thickness (t2) may have different thicknesses. The second thickness (t2) may be greater than the first thickness (t1).

[0071] The thinner the thickness of the solid electrolyte layer (300), the higher the energy density, but on the other hand, it is difficult to suppress the formation of lithium dendrites in the negative electrode, so there is a possibility of a short circuit.

[0072] In solid electrolytes, voids can form at the interface between the electrode and the electrolyte, which act as interfacial resistance and can lead to battery performance degradation.

[0073] Interfacial resistance can be reduced by applying pressure to the electrode and the solid electrolyte layer together. In one embodiment, since the sulfide-based solid electrolyte has high ionic conductivity and is mechanically soft, an all-solid-state battery with improved interfacial resistance can be fabricated through pressure application.

[0074] In one embodiment of the present invention, the anode layer (120) and the cathode layer (220) may include a pressurization process in the manufacturing process. In one embodiment of the present invention, the pressurization process may be performed by applying different pressures to each of the anode layer (120) and the cathode layer (220). In one embodiment of the present invention, the anode layer (120) may be manufactured by applying a relatively higher pressure compared to the cathode layer (220). For example, applying nanoscale particles to the anode and cathode active materials can increase the contact area with the solid electrolyte and improve interfacial resistance. In one embodiment, the anode active material may be in a polycrystalline form for reasons such as improved adhesion to the electrode plate, capacity characteristics, and lifespan characteristics, and may include secondary particles formed by the aggregation of at least two primary particles. In this case, the interface resistance between the anode layer (120) and the first solid electrolyte layer (310) is observed to be greater than the interface resistance between the cathode layer (220) and the second solid electrolyte layer (320), so the anode laminate can be manufactured by applying a relatively higher pressure compared to the cathode laminate. However, this is not limited thereto, and the anode layer (120) and the cathode layer (220) can be manufactured through a pressurization process in which different pressures are applied to each for various reasons.

[0075] One embodiment of the present invention can solve process problems that may occur when the interfacial resistance between the anode layer (120) and the first solid electrolyte layer (310) is different from the interfacial resistance between the cathode layer (220) and the second solid electrolyte layer (320) by dividing the solid electrolyte (300) into a first solid electrolyte layer (310) and a second solid electrolyte layer (320). For example, an all-solid-state battery manufactured according to the all-solid-state battery manufacturing method described below can provide an all-solid-state battery manufactured by applying different pressures to the anode stack and the cathode stack, respectively.

[0076] One embodiment of the present invention divides the solid electrolyte layer (300) into a first solid electrolyte layer (310) and a second solid electrolyte layer (320) and adjusts the thickness of each differently, thereby increasing energy density while suppressing the formation of lithium dendrites in the negative electrode. This allows for the provision of an all-solid-state battery (10) with improved stability against short-circuit risk and shock and high energy density.

[0077] The ratio (t2 / t1) of the second thickness t2 to the first thickness t1 may be 1 to 20. Specifically, the ratio (t2 / t1) of the second thickness t2 to the first thickness t1 may be 2 to 15, 4 to 11, or 4.5 to 5.5. When the ratio (t2 / t1) of the second thickness t2 to the first thickness t1 is within the aforementioned numerical range, the formation of lithium dendrites in the negative electrode is suppressed while increasing energy density, thereby improving stability against short-circuit risk and shock, and providing an all-solid-state battery (10) with high energy density.

[0078] The first thickness (t1) may be 30 μm or less. Specifically, the first thickness (t1) may be 25 μm or less, 20 μm or less, 14 μm or less, or 10 μm or less. The first thickness (t1) may be 0.1 μm or more. Specifically, the first thickness (t1) may be 1 μm or more, 2 μm or more, 4 μm or more, or 5 μm or more. If the first thickness (t1) exceeds the numerical range mentioned above, the energy density of the all-solid-state battery (10) may decrease. If the first thickness (t1) does not fall within the numerical range mentioned above, the first thickness (t1) may not be sufficient to form an interface with respect to the diameter of the active material powder within the positive electrode.

[0079] The second thickness (t2) may be 30 μm or more. Specifically, it may be 35 μm or more, 40 μm or more, 45 μm or more, 50 μm or more, 55 μm or more, and 60 μm or more. The second thickness (t2) may be 120 μm or less. Specifically, the second thickness (t2) may be 90 μm or less and 60 μm or less. If the second thickness (t2) does not fall within the aforementioned numerical range, it may be difficult to suppress the formation of lithium dendrites within the negative electrode, and there may be a risk of a short circuit. If the second thickness (t2) exceeds the aforementioned numerical range, the energy density of the all-solid-state battery (10) may decrease.

[0080] The third thickness (T) may be 120 μm or less. Specifically, the third thickness (T) may be 90 μm or less and 60 μm or less. The third thickness (T) may be 10 μm or more. Specifically, the third thickness (T) may be 30 μm or more and 50 μm or more. If the third thickness (T) exceeds the above numerical range, the energy density of the all-solid-state battery (10) may decrease.

[0081] Referring to FIGS. 1 and 2, the area of ​​the anode layer (100) and the area of ​​the cathode layer (200) may differ from each other. Specifically, the area of ​​the cathode layer (200) may be larger than the area of ​​the anode layer (100). The anode layer (100) may be completely superimposed within the cathode layer (200).

[0082] In one embodiment of the present invention, the first solid electrolyte layer (310) may have substantially the same area as the anode layer (100). The second solid electrolyte layer (320) may have substantially the same area as the cathode layer (200).

[0083] Referring to FIGS. 1 and 2, the first solid electrolyte layer (310) may have a first width (W1) in the first direction (D1). The second solid electrolyte layer (320) may have a second width (W2) in the first direction (D1). The first width (W1) may be smaller than the second width (W2).

[0084] The difference between the second width (W2) and the first width (W1) may be 10 mm or less. Specifically, the difference between the second width (W2) and the first width (W1) may be 8 mm or less, 5 mm or less, or 3 mm or less. The difference between the second width (W2) and the first width (W1) may be 0.1 mm or more, 0.5 mm or more, or 1 mm or more. If the above numerical range is exceeded, the size of the anode layer (100) becomes relatively smaller, so the discharge capacity is lowered and the energy density of the all-solid-state battery (10) may decrease. If the above numerical range is not met, it is difficult to suppress the formation of lithium dendrites in the negative electrode, and there may be a risk of a short circuit.

[0085] The ratio (W2 / W1) of the second width (W2) to the first width (W1) may be 1 to 1.6. Specifically, the ratio (W2 / W1) of the second width (W2) to the first width (W1) may be 1 to 1.5, 1 to 1.4, 1 to 1.3, 1 to 1.2, or 1 to 1.1.

[0086] If the ratio (W2 / W1) of the second width (W2) to the first width (W1) exceeds the numerical range, the energy density of the all-solid-state battery (10) is reduced.

[0087] Referring to FIGS. 1 and 2, the first solid electrolyte layer (310) may have a third width (W3) in the second direction (D2). The second solid electrolyte layer (320) may have a fourth width (W4) in the second direction (D2). The third width (W3) may be smaller than the fourth width (W4).

[0088] The difference between the third width (W3) and the fourth width (W4) may be 10 mm or less. Specifically, the difference between the third width (W3) and the fourth width (W4) may be 8 mm or less, 5 mm or less, or 3 mm or less. The difference between the fourth width (W4) and the third width (W3) may be 0.1 mm or more, 0.5 mm or more, or 1 mm or more. If the above numerical range is exceeded, the size of the anode layer (100) becomes relatively smaller, so the discharge capacity is lowered and the energy density of the all-solid-state battery (10) may decrease. If the above numerical range is not met, it is difficult to suppress the formation of lithium dendrites in the negative electrode, and there may be a risk of a short circuit.

[0089] The ratio (W4 / W3) of the fourth width (W4) to the third width (W3) may be 1 to 1.6. Specifically, the ratio (W4 / W3) of the fourth width (W4) to the third width (W3) may be 1 to 1.5, 1 to 1.4, 1 to 1.3, 1 to 1.2, or 1 to 1.1.

[0090] If the ratio (W4 / W3) of the fourth width (W4) to the third width (W3) exceeds the numerical range, the energy density of the all-solid-state battery (10) is reduced.

[0091]

[0092] FIGS. 3 and 4 are conceptual diagrams of an all-solid-state battery manufacturing apparatus according to an embodiment of the present invention. FIG. 3 is an overall conceptual diagram of an all-solid-state battery manufacturing apparatus according to an embodiment of the present invention. Referring to FIG. 3, the all-solid-state battery manufacturing apparatus according to an embodiment of the present invention may include an adhesive sheet supply unit (ASP), a positive electrode stacking unit (AP1), a positive electrode supply unit (AP2), a gasket stacking unit (GSP), a negative electrode stacking unit (CP1), a negative electrode supply unit (CP2), an inversion unit (RVP), a transfer unit (TRU), a pressurizing unit (PP), an adhesive sheet removal unit (RSP), and a stacking unit (SP).

[0093] The adhesive sheet supply unit (ASP) can supply an adhesive sheet (ADS, FIG. 6) for manufacturing an all-solid-state battery. A description of the adhesive sheet will be provided later in FIG. 6.

[0094] The anode lamination section (AP1) can perform lamination of an anode on an adhesive sheet. Lamination of an anode (AN) on an adhesive sheet (ADS) will be described later in FIG. 7a.

[0095] The anode supply unit (AP2) can manufacture an anode (AN, FIG. 7a) that is laminated on an adhesive sheet (ADS, FIG. 6) in the anode lamination unit (AP1). The anode (AN) may be substantially the same or similar to the anode layer (100) described above in FIG. 1 and FIG. 2.

[0096] The gasket lamination section (GSP) can perform lamination of a gasket sheet onto an anode laminated on an adhesive sheet. A detailed description of the gasket sheet (GKS) will be provided in FIG. 4.

[0097] The cathode stacking portion (CP1) can perform the stacking of a cathode (CN) on a gasket sheet (GKS) and an anode (AN). (Figs. 7d and 8e)

[0098] The cathode supply unit (CP2) can perform the manufacturing of a cathode (CN) that is stacked in the cathode stacking unit (CP1). The cathode (CN) may be substantially the same or similar to the cathode layer (200) described above in FIGS. 1 and 2.

[0099] The inversion unit (RVP) can perform the inversion of the upper and lower sides of the laminated sheet (STS) described later in FIG. 9a.

[0100] The transfer unit (TRU) transfers the laminated sheet (STS) and will be explained in detail in FIGS. 10 to 13, which will be described later.

[0101] The pressurizing unit (PP) can pressurize the laminated sheet (STS, FIG. 13).

[0102] The adhesive sheet removal unit (RSP) can remove the adhesive sheet from the conveyed and pressurized laminated sheet.

[0103] The stacking unit (SP) can perform the task of loading an all-solid-state battery from which the adhesive sheet has been removed in the adhesive sheet removal unit (RSP).

[0104]

[0105] FIG. 4 is an overall conceptual diagram of an all-solid-state battery manufacturing apparatus according to another embodiment of the present invention. I will explain it mainly in terms of the differences compared with FIG. 3. The all-solid-state battery manufacturing apparatus illustrated in FIG. 4 may include a first gasket stacking section (GSP1) and a second gasket stacking section (GSP2).

[0106] The first gasket stack (GSP1) may be located on the front side of the anode stack (AP1). Additionally, the second gasket stack (GSP2) may be located on the rear side of the anode stack (AP1). That is, the anode stack (AP1) may be located between the first gasket stack (GSP1) and the second gasket stack (GSP2). This may be because the short axis (GSK1, FIG. 8a) of the gasket is stacked in the first gasket stack (GSP1), and the long axis (GSK2, FIG. 8c) of the gasket is stacked in the second gasket stack (GSP2).

[0107]

[0108] FIG. 5 is a plan view of a gasket sheet (GKS) according to one embodiment of the present invention. Referring to FIG. 5, the gasket sheet (GKS) may include a first region (AR1), a second region (AR2), and an opening (OHP).

[0109] The first region (AR1) may be a region in contact with the positive body (AN) and the negative body (CN). That is, the first region (AR1) may be the difference between the first width (W1, FIG. 1) and the second width (W2, FIG. 1). The first region (AR1) may be a region that does not come into contact with the transfer unit (TRU, FIG. 10). Additionally, the first region (AR1) may be a region that comes into contact with the pressurizing unit (PP, FIG. 13 and FIG. 14). The first region (AR1) may include a plurality of regions (AR1a to AR1d).

[0110] The first region (AR1) may include a first-1 region (AR1a), a first-2 region (AR1b), a first-3 region (AR1c), and a first-4 region (AR1d). As illustrated in FIG. 5, the first region (AR1) may include a plurality of openings (OHP1 to OHP4). Additionally, the first region (AR1) may include a first opening (OHP1), a second opening (OHP2), a third opening (OHP3), and a fourth opening (OHP4). The first opening (OHP1) may be the region where the first anode (ANa), which will be described later in FIG. 7a, is located. The second opening (OHP2) may be the region where the second anode (ANb), which will be described later in FIG. 7a, is located. The third opening (OHP3) and the fourth opening (OHP4) may each be regions where the third anode (ANc) and the fourth anode (ANd) are located.

[0111] Region 1-1 (AR1a) can compensate for the area difference between the first anode (ANa) and the first cathode (CNa) shown in FIGS. 7a and 7d. Region 1-2 (AR1b) can compensate for the area difference between the second anode (ANb) and the second cathode (CNb). Region 1-3 (AR1c) can compensate for the area difference between the third anode (ANc) and the third cathode (CNc). Region 1-4 (AR1d) can compensate for the area difference between the fourth anode (ANd) and the fourth cathode (CNd).

[0112] One side of the first region (AR1a) may be in contact with the first anode (ANa). Additionally, the other side of the first region (AR1a) may be in contact with the first cathode (CNa). One side of each of the first region (AR1b), the first region (AR1c), and the first region (AR1d) may be in contact with the second anode (ANb) to the fourth anode (ANd), respectively. The other side of each of the first region (AR1b) to the first region (AR1d) may be in contact with the second cathode (CNb) to the fourth cathode (CNd), respectively.

[0113] The second region (AR2) may be an area of ​​the gasket sheet (GKS) excluding the first region (AR1). That is, the second region (AR2) may be an area that does not come into contact with the positive body (AN) and the negative body (CN, FIG. 7d). The second region (AR2) may be an area that comes into contact with the transfer unit (TRU) in FIG. 10, which will be described later. The second region (AR2) may be an area that does not come into contact with the pressurizing unit (PP) in FIG. 13 and FIG. 14, which will be described later. The second region (AR2) may be an area attached to the adhesive layer located on the adhesive sheet (ADS). That is, the second region (AR2) can prevent the adhesive layer from coming into contact with the transfer unit (TRU). If the adhesive layer comes into contact with the transfer unit (TRU), the transfer of the stacking unit by the transfer unit (TRU) may not be easy. The second region (AR2) of the gasket sheet (GKS) can block contact between the adhesive sheet (ADS, FIG. 6) and the transfer unit (TRU).

[0114] Referring to FIG. 5, the second region (AR2) may include a second-1 region (AR2a), a second-2 region (AR2b), and a second-3 region (AR2c). The second-1 region (AR2a), the second-2 region (AR2b), and the second-3 region (AR2c) may have the same area. Additionally, the areas of the second-1 region (AR2a), the second-2 region (AR2b), and the second-3 region (AR2c) may differ from each other. The second-1 region (AR2a) may be adjacent to the first-1 region (AR1a). The second-2 region (AR2b) may be located between the first-2 region (AR1b) and the first-3 region (AR1c). The second-3 region (AR2c) may be adjacent to the first-4 region (AR1d).

[0115] Each of the 1-1 region (AR1a) to 1-4 region (AR1d) and 2-1 region (AR2a) to 2-3 region (AR2c) may include dotted lines or pre-cut lines. After the pressurization process of the stacking unit, a plurality of stacks may be separated into unit stacks by the pre-cut lines. The stacks may be substantially identical or similar to the all-solid-state battery (10) described above in FIGS. 1 and 2.

[0116]

[0117] FIGS. 6 to 8e are stepwise drawings showing a stacking unit (ASP, AP1, GSP, CP1, FIG. 3) stacking an anode (AN) and a cathode (CN) on an adhesive sheet (ADS). Referring to FIGS. 6 to 7d, the stacking unit (ASP, AP1, GSP, CP1, FIG. 3) can sequentially stack an anode (AN), a gasket sheet (GKS), and a cathode (CN) on an adhesive sheet (ADS). Additionally, referring to FIG. 6 and FIGS. 8a to 8e, the stacking unit can sequentially stack a first gasket (GSK1), an anode (AN), a second gasket (GSK2), and a cathode (CN), which will be described later, on an adhesive sheet (ADS). The lamination unit may include the adhesive sheet supply unit (ASP), a positive body lamination unit (AP1), a positive body supply unit (AP2), a gasket lamination unit (GSP), a negative body lamination unit (CP1), and a negative body supply unit (CP2) as described in detail in FIG. 3. Additionally, the lamination unit (ASP, AP1, GSP1, GSP2, CP1, FIG. 4) may further include the first gasket lamination unit (GSP1) and the second gasket lamination unit (GSP2) as described in detail in FIG. 4. Below, the respective lamination sequences of the lamination unit and related descriptions will be explained in detail with reference to the drawings.

[0118]

[0119] FIG. 6 is a perspective view of an adhesive sheet (ADS) according to an embodiment of the present invention. Referring to FIG. 6, the adhesive sheet (ADS) according to an embodiment of the present invention may be configured to transport a laminated sheet (STS), which will be described later, in one direction. Additionally, although not illustrated, the adhesive sheet (ADS) may include an adhesive layer. This may be for laminating an anode (AN) and a cathode (CN) on the adhesive sheet (ADS).

[0120] The adhesive sheet (ADS) can perform the function of adhering to the laminated sheet (STS) to transport multiple laminates. Additionally, the adhesive sheet (ADS) can perform the function of protecting the surfaces of multiple laminates from a pressurizing device during a process of pressurizing multiple laminates. The adhesive sheet (ADS) may include polyethylene terephthalate, etc. However, the components of the adhesive sheet (ADS) may include any material capable of performing the aforementioned functions.

[0121] An adhesive layer (not shown) can serve to attach the laminated sheet (STS) to the adhesive sheet (ADS). The adhesive layer may be located between the adhesive sheet (ADS) and the laminated sheet (STS). The adhesive layer may include at least one selected from the group consisting of acrylic adhesives, silicone adhesives, and rubber adhesives.

[0122] The adhesive layer may be located on the upper surface of the laminated sheet (STS). Additionally, the adhesive layer may be located in a third direction of the laminated sheet (STS). The adhesive layer may be completely bonded to the laminated sheet (STS).

[0123] For example, the adhesive layer may have adhesive properties. For instance, the adhesive layer may have adhesive properties sufficient to allow the adhesive sheet (ADS) to be subsequently detached or peeled off. The adhesive layer may serve to attach the laminated sheet (STS) to the adhesive sheet (ADS). The adhesive layer may be located between the adhesive sheet (ADS) and the laminated sheet (STS). The adhesive layer may include at least one selected from the group consisting of acrylic adhesives, silicone adhesives, and rubber adhesives.

[0124]

[0125] FIGS. 7a to 7d are conceptual diagrams illustrating the lamination of an all-solid-state battery on an adhesive sheet (ADS) according to one embodiment of the present invention.

[0126] FIG. 7a is a conceptual diagram showing an anode (AN) laminated on an adhesive sheet (ADS) according to an embodiment of the present invention. Referring to FIG. 7a, an anode (AN) may be positioned on the adhesive sheet (ADS). FIG. 7a is a conceptual diagram showing the lamination of an anode (AN) in the anode lamination section (AP1) described above in FIG. 3. Additionally, a plurality of anodes (Ana to ANd) may be laminated on the adhesive sheet (ADS). As shown in FIG. 7a, a first anode (ANa), a second anode (ANb), a third anode (ANc), and a fourth anode (ANd) may be positioned on the adhesive sheet (ADS). The first anode (ANa) to the fourth anode (ANd) may be an anode (AN) manufactured in the anode supply section (AP2) described above in FIG. 3 and FIG. 4. Although not shown in FIG. 7a, an adhesive layer may be positioned between the adhesive sheet (ADS) and the first anode (ANa) to the fourth anode (ANd). The adhesive sheet and the first anode (ANa) to the fourth anode (ANd) may be attached to each other by the adhesive layer.

[0127] FIG. 7b is a diagram showing a gasket sheet (GKS) being laminated on an anode (AN) laminated in FIG. 7a. Referring to FIG. 7b, the gasket sheet (GKS) can be laminated on the edge portion of the anode (AN). Each of the first anode (ANa) to the fourth anode (ANd) can be provided in each of the first opening (OHP1) to the fourth opening (OHP4) of the gasket sheet (GKS). The first-1 region (AR1a) to the first-4 region (AR1d) of the gasket sheet (GKS) can be provided in each of the edge portions of the first anode (ANa) to the fourth anode (ANd). Additionally, the second-1 region (AR2a) to the second-3 region (AR2c) may not be in contact with the first anode (ANa) to the fourth anode (ANd).

[0128] FIG. 7c is a drawing showing the appearance after the gasket sheet (GKS) in FIG. 7b is laminated onto the adhesive sheet (ADS). Referring to FIG. 7c, the first anode (ANa) to the fourth anode (ANd) can be positioned respectively in the first opening (OHP1) to the fourth opening (OHP4) described above in FIG. 4.

[0129] FIG. 7d is a diagram showing the lamination of a cathode (CN) on a gasket sheet (GKS). Referring to FIG. 7d, a cathode (CN) can be laminated on the gasket sheet (GKS). The cathode (CN) can be laminated on the gasket sheet (GKS) and the anode (AN). Referring to FIG. 7d, a first cathode (CNa) can be laminated on a first anode (ANa). A second cathode (CNb) can be laminated on a second anode (ANb). A third cathode (CNc) can be laminated on a third anode (ANc). A fourth anode (ANd) can be laminated on a fourth anode (ANd). Each of the first to fourth cathodes (CNa) to the fourth cathodes (CNd) may have an area larger than that of the first to fourth anodes (ANa) to the fourth anodes (ANd), as described above in FIGS. 1 and 2. Accordingly, each of the first to fourth cathodes (CNa) to the fourth cathodes (CNd) may be laminated on the first to fourth anodes (ANa) to the first to fourth regions (AR1a) to the first to fourth regions (AR1d) of the gasket sheet (GKS), respectively. Additionally, the cathode (CN) may not be laminated on the second region (AR2) of the gasket sheet (GKS).

[0130]

[0131] FIGS. 8a to 8e are conceptual diagrams illustrating the lamination of an all-solid-state battery on an adhesive sheet (ADS) according to another embodiment of the present invention. I will explain the differences in comparison with FIGS. 7a to 7d.

[0132] The gasket sheet (GKS) illustrated in FIGS. 8a to 8e may be an assembled gasket sheet (GKS). That is, the gasket sheet (GKS) illustrated in FIGS. 8a to 8e may have a different structure from the gasket sheet (GKS) described above in FIG. 4. The assembled gasket sheet (GKS) may include a short-axis gasket and a long-axis gasket. The short-axis gasket and the long-axis gasket may be represented as a first gasket (GSK1) and a second gasket (GSK2), respectively.

[0133] The first gasket (GSK1) may be a gasket laminated on the short side of the anode (AN). As illustrated in FIG. 8a, a plurality of first gaskets (GSK1) may be laminated on the adhesive sheet (ADS). Unlike FIG. 7a, the first gaskets (GSK1) may be laminated on the adhesive sheet (ADS) prior to the anode (AN). The first gasket (GSK1) may include first-1 gaskets (GSK1a) through first-4 gaskets (GSK1d) and first-1' gaskets (GSK1a') through first-4' gaskets (GSK1d'). The first gasket (GSK1) may be laminated on the adhesive sheet (ADS) by the first gasket lamination portion (GSP1) described above in FIG. 4.

[0134] Referring to FIG. 8b, a positive body (AN) can be stacked between a plurality of first gaskets (GSK1). That is, a first positive body (ANa) can be stacked between the first-1 gasket (GSK1a) and the first-1' gasket (GSK1a'). A second positive body (ANb) can be stacked between the first-2 gasket (GSK1b) and the first-2' gasket (GSK1b'). A third positive body (ANc) can be stacked between the first-3 gasket (GSK1c) and the first-3' gasket (GSK1c'). A fourth positive body (ANd) can be located between the first-4 gasket (GSK1d) and the first-4' gasket (GSK1d').

[0135] Referring to FIG. 8c, a second gasket (GSK2) may be laminated along the major axis of each of the first anode (ANa) to the fourth anode (ANd). The second gasket (GSK2) may be located between each of the first anode (ANa) to the fourth anode (ANd). The second gasket (GSK2) may include second-1 gaskets (GSK2a) to second-4 gaskets (GSK2d) and second-1' gaskets (GSK2a') to second-4' gaskets (GSK2d'). The first anode (ANa) may be located between the second-1 gasket (GSK2a) and the second-1' gasket. The second anode (ANb) may be located between the second-2 gasket (GSK2b) and the second-2' gasket (GSK2b'). The third anode (ANc) may be located between the second-third gasket (GSK2c) and the second-third' gasket (GSK2c'). The fourth anode (ANd) may be located between the second-fourth gasket (GSK2d) and the second-fourth' gasket (GSK2d'). The second gasket (GSK2) may be laminated by the second gasket laminate (GSP2) described above in FIG. 4.

[0136] FIG. 8d is a drawing showing the assembled state of a prefabricated gasket. Referring to FIG. 8d, a gasket may be positioned at the edge of each of the first anode (ANa) to the fourth anode (ANd). Unlike the gasket sheet (GKS) of FIG. 4, the gasket of FIG. 8d may not include a second region (AR2). That is, the gasket of FIG. 8d may be a gasket corresponding to the first region (AR1).

[0137] Referring again to FIG. 8d, the first anode (ANa) may be surrounded by a first-1 gasket (GSK1a), a first-1' gasket (GSK1a'), a second-1 gasket (GSK2a) and a second-1' gasket (GSK2a'). Likewise, each of the second anode (ANb) to the fourth anode (ANd) may be surrounded by a first-2 gasket (GSK1b) to a first-4 gasket (GSK1d), a first-2' gasket (GSK1b') to a first-4' gasket (GSK1d'), a second-2 gasket (GSK2b) to a second-4 gasket (GSK2d), and a second-2' gasket (GSK2b') to a second-4' gasket (GSK2d').

[0138] FIG. 8e is a diagram showing a cathode (CN) stacked on an anode (AN) and a gasket as illustrated in FIG. 8d. A first cathode (CNa) to a fourth cathode (CNd) may be stacked on each of a first anode (ANa) to a fourth anode (ANd).

[0139]

[0140] FIG. 9a is a conceptual diagram showing an inversion unit (RVP) according to an embodiment of the present invention. Referring to FIG. 9a, the inversion unit (RVP) can perform the role of inverting the top and bottom of a laminated sheet (STS) stacked by the stacking unit described above. The inversion unit (RVP) may include any means for inverting the top and bottom of the laminated sheet (STS). The laminated sheet (STS) inverted by the inversion unit (RVP) can be inverted not only up and down but also left and right.

[0141] Referring to FIG. 9a, the laminated sheet (STS) may have an anode (AN), a gasket sheet (GKS), and a cathode (CN) sequentially stacked from the bottom with respect to the third direction (D3) on an adhesive sheet (ADS). The laminated sheet (STS) inverted by the inversion unit (RVP) may have the cathode (CN), the gasket sheet (GKS), and the anode (AN) sequentially positioned from the bottom with respect to the third direction (D3).

[0142]

[0143] FIGS. 9b and 9c are front views of a laminated sheet (STS) according to an embodiment of the present invention. FIG. 9b is a front view of a laminated sheet (STS) before being inverted vertically by an inversion unit (RVP). FIG. 9c is a front view of a laminated sheet (STS) inverted vertically by an inversion unit (RVP).

[0144] Referring to FIG. 9b, the laminated sheet (STS) before inversion may have the adhesive sheet (ADS), gasket sheet (GKS), positive body (AN), and negative body (CN) positioned sequentially from the bottom. The descriptions for each of the positive body (AN), negative body (CN), and gasket sheet (GKS) may be substantially the same or similar as those described in FIG. 5 and FIG. 7a through 7d.

[0145] Referring to FIG. 9c, the laminated sheet inverted by the inversion unit (RVP) may have the cathode (CN), gasket sheet (GKS), anode (AN), and adhesive sheet (ADS) sequentially positioned from the bottom.

[0146] Referring to FIGS. 9b and 9c, the gasket sheet (GKS) inverted by the inversion unit (RVP) can be inverted left and right. That is, in FIG. 9b, the gasket sheet (GKS) can be positioned in the order of the first-1 region (AR1a), the first-1' region (AR1a'), the first-2 region (AR1b), the first-2' region (AR1b'), the first-3 region (AR1c), the first-3' region (AR1c'), the first-4 region (AR1d), and the first-4' region (AR1d') from the left. In FIG. 9c, the gasket sheet (GKS) may be positioned in the order of the 1-4' region (AR1d'), 1-4 region (AR1d), 1-3' region (AR1c'), 1-3 region (AR1c), 1-2' region (AR1b'), 1-2 region (AR1b), 1-1' region (AR1a'), and 1-1 region (AR1a) from the left.

[0147]

[0148] FIGS. 10 and FIGS. 11 are a perspective view and a front view, respectively, of a transfer unit (TRU, FIG. 13) according to an embodiment of the present invention. FIG. 10 is a drawing showing a transfer unit (TRU) according to an embodiment of the present invention. Referring to FIG. 10, a laminated sheet (STS) whose upper and lower sides are inverted by the inversion unit (RVP) described above in FIG. 9a can be transferred by the transfer unit. The transfer unit (TRU) can be configured to transfer the laminated sheet (STS) in one direction. The transfer unit (TRU) can be configured to transfer the laminated sheet (STS) in a first direction (D1).

[0149] Referring to FIG. 10, the transfer unit may include a plurality of transfer sections (ISP). The transfer unit (TRU) may be any means capable of transferring a laminated sheet (STS). The transfer unit (TRU) may include a first transfer section (ISPa), a second transfer section (ISPb), and a third transfer section (ISPc).

[0150] The first transfer unit (ISPa) may include a first roller (Ra) and a first input belt (Ba). The second transfer unit (ISPb) may include a second roller (Rb) and a second input belt (Bb). The third transfer unit (ISPc) may include a third roller (Rc) and a third input belt (Bc). The first input belt (Ba), the second input belt (Bb), and the third input belt (Bc) may each be positioned parallel to the first direction (D1).

[0151] The first roller (Ra) can perform the function of rotating the first input belt (Ba). The first input belt (Ba), rotated by the first roller (Ra), can perform the function of transporting the laminated sheet (STS). The second roller (Rb) and the third roller (Rc) can perform the function of rotating the second input belt (Bb) and the third input belt (Bc), respectively. The laminated sheet (STS) can be transported in the first direction by the first to third input belts (Ba-Bc) rotated by the first roller (Ra), the second roller (Rb), and the third roller (Rc). The first input belt (Ba), the second input belt (Bb), and the third input belt (Bc) can come into contact with the second region (AR2) of the gasket sheet (GKS).

[0152]

[0153] The first transfer unit (ISPa) and the third transfer unit (ISPc) may be located on both sides of the laminated sheet (STS). The third transfer unit (ISPc) may be located in the middle area of ​​the laminated sheet (STS).

[0154] Referring to FIGS. 10 and 11, a second region (AR2) of the gasket sheet (GKS) can come into contact with a transfer unit (TRU). More specifically, the first transfer unit (ISPa) can come into contact with the second-1 region (AR2a). The second transfer unit (ISPb) can come into contact with the second-2 region (AR2b). The third transfer unit (ISPc) can come into contact with the second-3 region (AR2c). In particular, the first input belt (Ba) included in the first transfer unit (ISPa) can come into contact with the second-1 region (AR2a) of the gasket sheet (GKS). The second input belt (Bb) included in the second transfer unit (ISPb) can come into contact with the second-2 region (AR2b) of the gasket sheet (GKS). The third input belt (Bc) included in the third transfer section (ISPc) can come into contact with the second-third region (AR2c) of the gasket sheet (GKS).

[0155] Referring to FIG. 11, the laminated sheet (STS) can be transported by a first transport unit (ISPa), a second transport unit (ISPb), and a third transport unit (ISPc). If the transport unit (TRU) includes only the first transport unit (ISPa) and the third transport unit (ISPc), the center area of ​​the laminated sheet (STS) may descend due to its own weight when transported by the transport unit (TRU). The center area of ​​the laminated sheet (STS) may refer to the second-2 area (AR2b). If the center area of ​​the laminated sheet (STS) descends due to its own weight, unnecessary wrinkles may form during the pressurization step after being transported by the transport unit (TRU). Additionally, the front surface of the laminate may not receive pressure evenly, which may increase the defect rate during the manufacturing of all-solid-state batteries.

[0156]

[0157] FIG. 12 is a conceptual diagram showing a transfer unit (ISPa, ISPb, ISPc) according to another embodiment of the present invention. Referring to FIG. 12, the laminated sheet (STS) may include a plurality of guide holes. Additionally, the transfer unit (TRU) may include a plurality of guide pins coupled to the guide holes to fix the laminated sheet (STS). The guide holes and guide pins may be coupled to each other to perform the function of fixing the laminated sheet (STS) so that it is not separated from the input belt.

[0158] Guide holes may be formed on the laminated sheet (STS). As shown in FIG. 12, a plurality of guide holes may be formed on the laminated sheet (STS). The plurality of guide holes may be formed in the area where the laminated sheet (STS) and the transfer unit (TRU) come into contact. However, the plurality of guide holes may not be formed in the middle area of ​​the laminated sheet (STS). That is, the plurality of guide holes may be formed in the area where the laminated sheet (STS) comes into contact with the first transfer unit (ISPa) and the third transfer unit (ISPc). This may be because the laminated sheet (STS) can be easily fixed even if the plurality of guide holes are located only in the area where the laminated sheet (STS) and the first transfer unit (ISPa) and the third transfer unit (ISPc) come into contact.

[0159] Multiple guide holes may also be formed in the area where the second transfer unit (ISPb) and the laminated sheet (STS) come into contact, and are not necessarily formed only in the aforementioned area, but may be formed in any area that is used to fix the laminated sheet (STS). A first guide hole (GHa) may be located in the part of the laminated sheet (STS) that comes into contact with the first transfer unit (ISPa). Additionally, a third guide hole (GHc) may be located in the part of the laminated sheet (STS) that comes into contact with the third transfer unit (ISPc).

[0160] Guide pins may be formed in the transfer unit (TRU). Guide pins may be formed in multiple forms in the transfer unit (TRU). More specifically, the first transfer section (ISPa) and the third transfer section (ISPc) may form multiple guide pins. Additionally, multiple guide pins may be formed on the first input belt (Ba) and the third input belt (Bc). A first guide pin (GPa) may be located on the first input belt (Ba). Additionally, a third guide pin (GPc) may be located on the third input belt (Bc). The first guide pin (GPa) may be coupled with the first guide hole (GHa). The second guide pin may be coupled with the second guide hole (GDa, GDc, FIG. 12).

[0161] Referring again to FIG. 12, the spacing between a plurality of guide pins may be greater than the spacing between a plurality of guide holes. More specifically, a plurality of guide holes may be spaced apart from each other by a first spacing (Wa). Additionally, a plurality of guide pins may be spaced apart from each other by a second spacing (Wb). The first spacing (Wa) may be smaller than the second spacing (Wb). Additionally, the first spacing (Wa) may be equal to the second spacing (Wb). If the first spacing (Wa) is larger than the second spacing (Wb), a guide pin that is not coupled to a guide hole may come into contact with the laminated sheet (STS). A guide pin that is not in contact with a guide hole may form an unnecessary gap between the laminated sheet (STS) and the input belt. If an unnecessary gap is formed between the laminated sheet (STS) and the input belt, the transfer unit (TRU) may not be able to easily transfer the laminated sheet (STS). In addition, the gap between the laminated sheet (STS) and the input belt may make it difficult to pressurize the all-solid-state battery or laminate. If pressurization is not easily performed, the defect rate may increase during the manufacturing of the all-solid-state battery.

[0162]

[0163] FIG. 13 is a perspective view of an all-solid-state battery manufacturing apparatus according to an embodiment of the present invention. Referring to FIG. 13, a transfer unit (TRU) may be positioned by extending through a pressurizing unit (PP). That is, the transfer unit (TRU) may perform the function of transferring a laminated sheet (STS) to the pressurizing unit (PP). The pressurizing unit (PP) may be positioned on the transfer unit (TRU). More specifically, an input belt included in the transfer unit (TRU) may be extended in one direction from a reversing section (RVP) through the pressurizing unit (PP). The one direction may be a first direction.

[0164] Referring to FIG. 13, the transfer unit (TRU) can continuously feed laminated sheets (STS) into the pressurizing unit (PP). Multiple laminated sheets (STS) may be positioned on the transfer unit (TRU). When the transfer unit (TRU) transfers multiple laminated sheets (STS), the pressurizing unit (PP) can continuously press the multiple laminated sheets (STS). That is, the pressurizing rollers (RL1, RL2) included in the pressurizing unit (PP) can be driven continuously without stopping.

[0165] As a comparative example of the present invention, if the pressure rollers are not driven continuously but are driven only when a laminated sheet (STS) is fed, the pressure rollers (RL1, RL2) may repeatedly drive and stop. If the pressure rollers (RL1, RL2) repeatedly drive and stop, the energy required to drive the pressure rollers (RL1, RL2) may increase. That is, if the pressure rollers (RL1, RL2) are not driven continuously, the amount of power consumed during the manufacture of an all-solid-state battery may increase. Therefore, if the pressure rollers (RL1, RL2) are not driven continuously, the efficiency of manufacturing an all-solid-state battery may decrease.

[0166] A pressure unit (PP) may be configured to roll press a laminated sheet (STS). The pressure unit (PP) may include a first pressure roller (RL1) and a second pressure roller (RL2). The first pressure roller (RL1) and the second pressure roller (RL2) may perform the function of pressing the laminated sheet (STS). The first pressure roller (RL1) and the second pressure roller (RL2) may perform the function of roll pressing the laminated sheet (STS). The pressure roller included in the pressure unit (PP) may press the laminated sheet (STS) with a pressure of 1 ton / cm to 4 ton / cm.

[0167]

[0168] FIG. 14 is a front view of an all-solid-state battery manufacturing apparatus according to an embodiment of the present invention. Referring to FIG. 14, a first pressure roller (RL1) and a second pressure roller (RL2) can press a laminated sheet (STS). More specifically, the first pressure roller (RL1) can come into contact with an adhesive sheet (ADS) of the laminated sheet (STS). The second pressure roller (RL2) can come into contact with a negative body (CN) of the laminated sheet (STS). Although not shown in FIG. 14, a protective film may be further included between the negative body (CN) and the second pressure roller (RL2). The protective film is positioned between the second pressure roller (RL2) and the negative body (CN) and can perform the function of protecting the negative body (CN) when pressurized.

[0169] Referring to FIGS. 13 and 14, the first pressure roller (RL1) and the second pressure roller (RL2) may each include a step portion and a pressure unit (PP).

[0170] The stepped portions (ST1, ST2) may refer to areas with a smaller diameter among the pressure rollers. The stepped portions may be located in an area corresponding to the area where the transfer unit (TRU) is located among the pressure unit (PP). That is, the stepped portions may be formed so that the pressure unit (PP) does not come into contact with the transfer unit (TRU). The stepped portions may include a first stepped portion (ST1) and a second stepped portion (ST2). The first stepped portion (ST1) and the second stepped portion (ST2) may be included in the first pressure roller (RL1) and the second pressure roller (RL2), respectively. The first stepped portion (ST1) and the second stepped portion (ST2) may not come into contact with each other. More specifically, the first stepped portion (ST1) and the second stepped portion (ST2) may not come into contact with the laminated sheet (STS). The first step section (ST1) and the second step section (ST2) may not press the laminated sheet (STS). A transfer unit (TRU) may be located between the first step section (ST1) and the second step section (ST2).

[0171] Referring to FIG. 14, the first step section (ST1) may include a first-1 step section (ST1a), a first-2 step section (ST1b), and a first-3 step section (ST1c). The second step section (ST2) may include a second-1 step section (ST2a), a second-2 step section (ST2b), and a second-3 step section (ST2c). A third transfer section (ISPc) may be located between the first-1 step section (ST1a) and the second-1 step section (ST2a). A second transfer section (ISPb) may be located between the first-2 step section (ST1b) and the second-2 step section (ST2b). A third transfer section (ISPc) may be located between the first-3 step section (ST1c) and the second-3 step section (ST2c). The first transfer section (ISPa) to the third transfer section (ISPc) described above may refer to the input belts (Ba to Bc) among the transfer sections (ISP).

[0172] A second-third region (AR2c) of the gasket sheet (GKS) may be located between the first-first step (ST1a) and the second-first step (ST2a). A second-second region (AR2b) of the gasket sheet (GKS) may be located between the first-second step (ST1b) and the second-second step (ST2b). Additionally, a second-first region (AR2a) of the gasket sheet (GKS) may be located between the first-third step (ST1c) and the second-third step (ST2c).

[0173] The pressure unit (PP) may refer to the part where the first pressure roller (RL1) and the second pressure roller (RL2) come into contact with the laminated sheet (STS). The pressure unit (PP) may be the part where the pressure rollers substantially perform the function of pressing the laminated sheet (STS). More specifically, the first pressure roller (RL1) may include the first pressure unit (PP). The second pressure roller (RL2) may include the second pressure unit (PP). The first pressure unit (PP) and the second pressure unit (PP) may each come into contact with the laminated sheet (STS). The first pressure unit (PP) and the second pressure unit (PP) may press the laminated sheet (STS). The first pressure unit (PP) and the second pressure unit (PP) may roll press the laminated sheet (STS) by coming into contact with it.

[0174] Referring to FIG. 14, the first pressurizing unit (PS1) may include a first-1 pressurizing unit (PS1a) and a first-2 pressurizing unit (PS1b). The second pressurizing unit (PS2) may include a second-1 pressurizing unit (PS2a) and a second-2 pressurizing unit (PS2b).

[0175] Third and fourth cathode bodies (CNc, CNd) may be located between the first-1 pressurizing part (PS1a) and the second-1 pressurizing part (PS2a). Additionally, first-3 and first-4 regions (AR1c, AR1d) may be located between the first-21 pressurizing part (PS1a) and the second-1 pressurizing part (PS2a).

[0176] First and second cathode bodies (CNa, CNb) may be located between the first-2 pressurizing part (PS1b) and the second-2 pressurizing part (PS2b). Additionally, first-1 and first-2 regions (AR1a, AR1b) may be located between the first-2 pressurizing part (PS1b) and the second-2 pressurizing part (PS2b).

[0177] Referring to FIG. 14, the step portion (ST1, ST2) may include a first diameter (DI1). Additionally, the pressurizing portion (PS1, PS2) may include a second diameter (DI2). The first diameter (DI1) of the step portion may be smaller than the second diameter (DI2) of the pressurizing portion. When the first diameter (DI1) and the second diameter (DI2) are equal to or larger than each other, the pressurizing unit (PP) can pressurize not only the laminated sheet (STS) but also the transfer unit (TRU).

[0178] Additionally, as illustrated in FIG. 14, the first-1 pressurizing part (PS1a) and the second-1 pressurizing part (PS2a) may include a first-1 width (W1a). The first-2 pressurizing part (PS1b) and the second-2 pressurizing unit (PS2b) may include a first-2 width (W1b). Each of the first-1 step part (ST1a), the second-1 step part (ST2a), the first-2 step part (ST1b), the second-2 step part (ST2b), the first-3 step part (ST1c), and the second-3 step part (ST2c) may include a second-1 width, a second-2 width (W2b), and a second-3 width (W2c).

[0179] The 1-1 width (W1a) and the 1-2 width (W1b) may each be larger than the 2-1 width (W2a) to the 2-3 width (W2c). This may mean that the pressure area (PS1, PS2), which is the pressure-applied region of the pressure roller, is wider. If the pressure area (PS1, PS2) is smaller than the step area (ST1, ST2), the actual pressure-applying region of the pressure roller may be smaller. In other words, when driving the pressure roller, if the pressure-applied region is small, the energy used for pressure application may be smaller compared to the energy input during driving. This may worsen energy efficiency during the manufacture of all-solid-state batteries.

[0180] FIG. 15 is a flowchart illustrating a method for manufacturing an all-solid-state battery according to an embodiment of the present invention. Referring to FIG. 15, the method for manufacturing an all-solid-state battery according to an embodiment of the present invention may include forming a laminated sheet by laminating a positive electrode and a negative electrode on an adhesive sheet (S1), inverting the laminated sheet vertically with a reverse portion (S2), feeding the inverted laminated sheet into a transfer unit and transporting it in one direction (S3), and roll-pressing the laminated sheet fed into the transfer unit with a pressure roller (S4).

[0181] Forming a laminated sheet (STS) by laminating an anode and a cathode on an adhesive sheet (S1) may be substantially the same or similar as described in FIGS. 6 to 7d and FIGS. 8a to 8e. Inverting the laminated sheet up and down with an inversion unit (S2) may be substantially the same or similar as described in FIGS. 9a to 9c. Feeding the inverted laminated sheet into a transfer unit (TRU) and transporting it in one direction (S3) may be substantially the same or similar as described in FIGS. 10 to 13. Roll-pressing the laminated sheet (STS) fed into the transfer unit (TRU) with a pressure roller (S4) may be substantially the same or similar as described in FIG. 14.

[0182] I will explain the differences in comparison with the details described in FIGS. 6 to 14. A method for manufacturing an all-solid-state battery according to one embodiment of the present invention may further include peeling off an adhesive sheet (ADS) after roll-pressing a laminated sheet (STS). Peeling off the adhesive sheet (ADS) may include peeling off the adhesive sheet (ADS) located on the upper part of the laminated sheet (STS) that has been inverted and pressed by an inversion unit (RVP). The peeling of the adhesive sheet (ADS) may include any means capable of peeling off the sheet.

[0183]

[0184] Although embodiments of the present invention have been described above with reference to the attached drawings, the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

[0185]

[0186] ASP: Adhesive Sheet Supply Unit

[0187] AP1: Anode stacking section AP2: Anode supply section

[0188] GSP: Gasket laminate

[0189] GSP1: 1st gasket laminate GSP2: 2nd gasket laminate

[0190] CP1: Cathode stacking section CP2: Cathode supply section

[0191] RVP: Counter-reaction

[0192] TRU: Transfer Unit

[0193] PP: Pressurized unit

[0194] RSP: Adhesive sheet removal unit

[0195] SP: Stacking Department

[0196]

[0197] STS: Laminated Sheet

[0198] GKS: Gasket Sheet

[0199] OHP: Opening

[0200] OHP1: First opening OHP2: Second opening

[0201] OHP3: 3rd opening OHP4: 4th opening

[0202] AR1: Area 1

[0203] AR1a: Area 1-1 AR1b: Area 1-2

[0204] AR1c: Zones 1-3 AR1d: Zones 1-4

[0205] AR1a': Area 1-1' AR1b': Area 1-2'

[0206] AR1c': Regions 1-3' AR1d': Regions 1-4'

[0207]

[0208] AR2: Area 2

[0209] AR2a: Area 2-1 AR2b: Area 2-2

[0210] AR2c: Areas 2-3 AR2d: Areas 2-4

[0211] GSK1: First gasket

[0212] GSK1a: Gasket 1-1 GSK1b: Gasket 1-2

[0213] GSK1c: Gaskets 1-3 GSK1d: Gaskets 1-4

[0214] GSK1a': 1-1' gasket GSK1b': 1-2' gasket

[0215] GSK1c': 1-3' gasket GSK1d': 1-4' gasket

[0216] GSK2: The second gasket

[0217] GSK2a: Gasket 2-1 GSK2b: Gasket 2-2

[0218] GSK2c: Gaskets 2-3 GSK2d: Gaskets 2-4

[0219] GSK2a': 2-1' gasket GSK2b': 2-2' gasket

[0220] GSK2c': 2-3' gasket GSK2d': 2-4' gasket

[0221]

[0222] ADS: Adhesive Sheet

[0223]

[0224] AN: Polar body

[0225] Ana: 1st bipolar body ANb: 2nd bipolar body

[0226] ANc: Third positive electrode ANd: Fourth positive electrode

[0227]

[0228] CN: Cathode

[0229] Can: 1st cathode CNb: 2nd cathode

[0230] CNc: 3rd cathode CNd: 4th cathode

[0231]

[0232] ISP: Transfer unit

[0233] ISPa: 1st transfer section ISPb: 2nd transfer section

[0234] ISPc: 3rd Transfer Unit

[0235] Ba: 1st input belt Bb: 2nd input belt

[0236] Bc: 3rd input belt

[0237] Ra: 1st roller Rb: 2nd roller

[0238] Rc: 3rd roller

[0239] GPa: 1st guide pin GHa: 1st guide hole

[0240] GPc: 3rd guide pin GHc: 3rd guide hole

[0241] Wa: 1st interval Wb: 2nd interval

[0242]

[0243] PP: Pressurized unit

[0244] RL1: First pressure roller

[0245] ST1: 1st step section

[0246] ST1a: Step 1-1 ST1b: Step 1-2

[0247] ST1c: 1st-3rd step section

[0248] PS1: 1st pressurizing unit

[0249] PS1a: 1-1 Pressurizing section PS1b: 1-2 Pressurizing section

[0250] RL2: Second roller

[0251] ST2: Second step section

[0252] ST2a: Step 2-1 ST2b: Step 2-2

[0253] ST2c: 2-3rd step section

[0254] PS2: Second pressurizing unit

[0255] PS2a: 2-1 Pressurizing section PS2b: 2-2 Pressurizing section

[0256] W1a: 1-1 width W1b: 1-2 width

[0257] W2a: 2-1 width W2b: 2-2 width

[0258] W2c: Sections 2-3

[0259] DI1: 1st diameter DI2: 2nd diameter

Claims

1. A lamination unit configured to form a laminated sheet by laminating an anode and a cathode on an adhesive sheet; An inversion part configured to invert the upper and lower parts of the above-mentioned laminated sheet; A transfer unit configured to transfer the laminated sheet, which has been inverted by the inversion unit, in one direction; and A solid-state battery manufacturing apparatus comprising a pressurizing unit configured to roll press the laminated sheet conveyed through the conveying unit.

2. In Paragraph 1, The above laminated sheet includes a plurality of guide holes, and The above transfer unit comprises a plurality of guide pins for fixing the laminated sheet by being coupled with the guide hole, an all-solid-state battery manufacturing apparatus.

3. In Paragraph 2, A solid-state battery manufacturing apparatus in which the spacing between the plurality of guide pins is greater than the spacing between the plurality of guide holes.

4. In Paragraph 1, The above laminated sheet further includes a gasket sheet including an opening, and The above positive body is provided within the above opening, an all-solid-state battery manufacturing device.

5. In Paragraph 4, The above gasket sheet includes a first region including the opening and a second region excluding the first region, and The above second region is a solid-state battery manufacturing device that is in direct contact with the above transfer unit.

6. In Paragraph 5, The above transfer unit includes an input belt, and The above-mentioned input belt extends in one direction from the above-mentioned inversion section through the above-mentioned pressurizing unit, in an all-solid-state battery manufacturing device.

7. In Paragraph 6, A solid-state battery manufacturing apparatus comprising a plurality of input belts extending parallel to each other along the above-mentioned direction.

8. In Paragraph 4, The above gasket sheet includes a plurality of assembled gaskets, and A solid-state battery manufacturing device in which the above plurality of prefabricated gaskets are assembled to form the opening.

9. In Paragraph 1, The above-mentioned pressure unit includes a first pressure roller and a second pressure roller provided above and below the laminated sheet, respectively, and All-solid-state battery manufacturing apparatus, wherein at least one of the first pressure roller and the second pressure roller comprises a stepped portion that does not contact the laminated sheet.

10. In Paragraph 9, At least one of the first pressure roller and the second pressure roller further includes a pressure portion excluding the stepped portion, and A solid-state battery manufacturing device in which the diameter of the above-mentioned step portion is smaller than the diameter of the above-mentioned pressurized portion.

11. In Paragraph 1, The above adhesive sheet includes an adhesive layer, A solid-state battery manufacturing apparatus comprising at least one selected from the group consisting of an adhesive layer, an acrylic adhesive, a silicone adhesive, and a rubber adhesive.

12. Forming a laminated sheet by laminating an anode and a cathode on an adhesive sheet; Inverting the above-mentioned laminated sheet vertically using an inversion section; Feeding the above-mentioned inverted laminated sheet into a transfer unit and transferring it in one direction; and A method for manufacturing an all-solid-state battery, comprising rolling-pressing the laminated sheet fed into the above-mentioned transfer unit with a pressure roller.

13. In Paragraph 12, A method for manufacturing an all-solid-state battery, wherein forming the laminated sheet further comprises laminating a gasket sheet on the adhesive sheet.

14. In Paragraph 13, The above gasket sheet includes an opening, A method for manufacturing an all-solid-state battery, wherein the positive electrode is provided within the opening.

15. In Paragraph 13, A method for manufacturing an all-solid-state battery, wherein the above gasket sheet comprises a plurality of assembled gaskets joined together.

16. In Paragraph 14, The above gasket sheet includes a first region including the opening and a second region excluding the first region, and A method for manufacturing an all-solid-state battery, wherein the above-mentioned pressure roller selectively presses the first region excluding the second region.

17. In Paragraph 12, A method for manufacturing an all-solid-state battery, wherein feeding the laminated sheet into the transfer unit further comprises fixing the laminated sheet by mutually engaging the guide pin of the transfer unit with the guide hole of the laminated sheet.

18. In Paragraph 12, A method for manufacturing an all-solid-state battery, wherein the above-described pressure roller presses the above-described laminated sheet with a pressure of 1 ton / cm to 4 ton / cm.

19. In Paragraph 12, A method for manufacturing an all-solid-state battery, wherein the roll press of the above-mentioned laminated sheet is to continuously drive the above-mentioned pressure roller without stopping to press the above-mentioned laminated sheet.

20. In Paragraph 12, A method for manufacturing an all-solid-state battery, further comprising peeling off the adhesive sheet after roll-pressing the laminated sheet.

Images