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

Abstract

The present invention relates to an all-solid-state battery manufacturing apparatus and all-solid-state battery manufacturing method including same. More specifically, the all-solid-state battery manufacturing apparatus may include an electrode stack unit, a monocell transfer unit, and a cell stack unit, wherein: the electrode stack unit is configured to form a monocell by sequentially stacking a first electrode sheet and a second electrode sheet; and the monocell transfer unit is configured to transfer the monocell to a cell stack unit. The electrode stack unit may include: a first stack table including a first stage and a first rotation unit; a first input unit adjacent to the first location; and a second input unit adjacent to the second location. The electrode stack unit may further include a rotary transfer unit and a pressing unit.

Description

All-solid-state battery manufacturing device and method for manufacturing an all-solid-state battery using the same

[0001] The present invention relates to an all-solid-state battery manufacturing device and a method for manufacturing an all-solid-state battery using the same, and more specifically, to a manufacturing device and method capable of manufacturing a mono-cell and a stack cell by continuously stacking electrode layers or mono-cells on a rotating circulating stage.

[0002] The recent rapid proliferation of battery-powered electronic devices, such as mobile phones, laptops, and electric vehicles, has led to a rapid increase in demand for high-energy density, high-capacity secondary batteries. Accordingly, active research and development is underway to improve the performance of lithium secondary batteries.

[0003] A lithium secondary battery is a battery that includes a positive electrode and a negative electrode that contain active materials capable of intercalating and deintercalating lithium ions, and an electrolyte, and produces electrical energy through oxidation and reduction reactions when lithium ions are intercalated / deintercalated from the positive electrode and negative electrode.

[0004]

[0005] The problem to be solved by the present invention is to provide an all-solid-state battery manufacturing device capable of continuously manufacturing monocells and stack cells using electrode sheets that have undergone a pre-pressurization process.

[0006] Another problem to be solved by the present invention is to provide a method for manufacturing an all-solid-state battery using the above manufacturing device.

[0007]

[0008] According to the concept of the present invention, an all-solid-state battery manufacturing device may include an electrode lamination unit, the electrode lamination unit configured to sequentially laminate a first electrode sheet and a second electrode sheet to form a plurality of first monocells; a monocell transfer unit, the monocell transfer unit configured to invert some of the first monocells upside down to form second monocells and transfer the first and second monocells to the cell lamination unit; and a cell lamination unit.

[0009] The electrode stacking unit may include: a first stacking table including a first stage and a first rotation unit, the first rotation unit being configured to cycle through a first position, a second position, and a third position while the first stage rotates; a first input unit adjacent to the first position, the first input unit being configured to stack a first electrode sheet on the first stage; a second input unit adjacent to the second position, the second input unit being configured to stack a second electrode sheet on the first stage; a rotary transport unit adjacent to the third position; and a pressurizing unit adjacent to the rotary transport unit. The rotary transport unit may be configured to transfer a stack including the first electrode sheet and the second electrode sheet to the pressurizing unit, and the pressurizing unit may be configured to perform a pressurizing process on the stack to form a first monocell.

[0010] According to another concept of the present invention, an all-solid-state battery manufacturing device may include an electrode lamination unit configured to sequentially laminate a first electrode sheet and a second electrode sheet to form a plurality of first mono cells; a mono cell transfer unit configured to transfer the first mono cells to the cell lamination unit; and a cell lamination unit. The cell lamination unit may include: an inversion unit, a second lamination table, a third input unit, a fourth input unit, and a fifth input unit, and the inversion unit may be configured to invert some of the first mono cells upside down to form second mono cells.

[0011] According to another concept of the present invention, a method for manufacturing an all-solid-state battery may include: sequentially stacking a first electrode sheet and a second electrode sheet to form a plurality of first monocells; forming second monocells by flipping some of the first monocells upside down; and sequentially stacking an elastic pad, the first monocell, and the second monocell to form a stack cell. Forming the monocell includes: stacking a first electrode sheet on a first stage at a first position; stacking a second electrode sheet on the first stage at a second position; and performing a pressing process on a stack including the first and second electrode sheets, wherein the first stage may rotate and cycle between the first position and the second position.

[0012]

[0013] The all-solid-state battery manufacturing device according to the present invention can manufacture monocells and stack cells containing the monocells through a series of continuous processes using pre-pressurized electrode sheets. This allows the all-solid-state battery manufacturing process to be performed efficiently.

[0014] The all-solid-state battery manufacturing device according to the present invention can directly transfer manufactured monocells to a stacking unit or store them in a magazine and then transfer them. By controlling the monocell transfer time, any imbalance that may arise due to differences in monocell manufacturing time and stack cell manufacturing time can be resolved.

[0015]

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

[0017] FIG. 2 is a plan view illustrating an all-solid-state battery manufacturing device according to embodiments of the present invention.

[0018] Figure 3 is a plan view illustrating an electrode laminate according to one embodiment of the present invention.

[0019] Figure 4 is a front view illustrating a pressurizing unit of an electrode stack according to one embodiment of the present invention.

[0020] FIG. 5a is a plan view illustrating a monocell transport unit according to one embodiment of the present invention.

[0021] FIG. 5b is a plan view illustrating a cell stack according to one embodiment of the present invention.

[0022] FIG. 6a is a plan view illustrating a monocell transport unit according to another embodiment of the present invention.

[0023] FIG. 6b is a plan view illustrating a cell stack according to another embodiment of the present invention.

[0024] Figure 7 is a plan view illustrating an exhaust section according to one embodiment of the present invention.

[0025] FIGS. 8 to 15 are cross-sectional views illustrating a method for manufacturing an all-solid-state battery according to embodiments of the present invention.

[0026]

[0027] To fully understand the structure and effects of the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms and subject to various modifications. However, the description of these embodiments is provided solely to ensure a complete disclosure of the present invention and to fully inform those skilled in the art of the invention of the scope of the invention.

[0028] In this specification, when a component is referred to as being on another component, it means that it can be formed directly on the other component, or a third component may be interposed between them. Furthermore, in the drawings, the thicknesses of the components are exaggerated for the sake of clarity. Parts designated by the same reference numerals throughout the specification represent the same components.

[0029] The embodiments described herein will be described with reference to cross-sectional views, plan views, and / or perspective views, which are ideal illustrations of the present invention. Although terms such as "first," "second," and "third" are used to describe various components in various embodiments of this specification, these components should not be limited by these terms. These terms are used merely to distinguish one component from another. The embodiments described and illustrated herein also include complementary embodiments.

[0030] The terminology used herein is for the purpose of describing embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise. As used herein, the words "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components.

[0031] FIG. 1 is a cross-sectional view illustrating an all-solid-state battery according to embodiments of the present invention. Referring to FIG. 1, a mono-cell (MNC) of an all-solid-state battery according to one embodiment of the present invention is illustrated. The mono-cell (MNC) 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, the present invention is not limited thereto, and the mono-cell (MNC) 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).

[0032] The positive electrode layer (100) may include a positive electrode current collector (110) and a positive electrode active material layer (120) disposed on the positive electrode current collector (110). The positive electrode active material layer (120) may include a positive electrode active material, a solid electrolyte, a conductive material, and a binder.

[0033] The positive electrode current collector (110) can provide a reference surface on which the positive electrode active material layer (120) is arranged. The positive electrode current collector (110) can have a plate or foil shape. For example, the positive electrode current collector (110) can include 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.

[0034] Unlike that illustrated in FIG. 1, in one embodiment of the present invention, the positive electrode current collector (110) may be omitted. Although not illustrated, a carbon layer having a thickness of 0.1 μm to 4 μm may be additionally disposed between the positive electrode current collector (110) and the positive electrode active material layer (120) to increase the bonding strength between the positive electrode current collector (110) and the positive electrode active material layer (120).

[0035] The cathode active material may be a material that can reversibly absorb and desorb lithium ions. For example, the cathode active material may include, but is not limited to, 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. The cathode active materials may be used alone or as a mixture of two or more thereof.

[0036] Lithium transition metal oxides include, 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 b B 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 GeO2(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 Mn2GbO4(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 may be a compound represented by any one of Fe2(PO4)3(0≤f≤2), LiFePO4. In these compounds, the capital letter “A” is Ni, Co, Mn, or a combination thereof, the capital letter “B” is Al, Ni, Co, Mn, Cr, Fe, Mg, Sr, V, a rare earth element, or a combination thereof, the capital letter “D” is O, F, S, P, or a combination thereof, the capital letter “E” is Co, Mn, or a combination thereof, the capital letter “F” is F, S, P, or a combination thereof, the capital letter “G” is Al, Cr, Mn, Fe, Mg, La, Ce, Sr, V, or a combination thereof, the capital letter “Q” is Ti, Mo, Mn, or a combination thereof, the capital letter “I” is Cr, V, Fe, Sc, Y, or a combination thereof, and the capital letter “J” is V, Cr, Mn, Co, Ni, Cu, or a combination thereof.

[0037] The cathode 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 atomic layers and metal atomic layers are alternately and regularly arranged in a direction, and thereby each atomic layer forms a two-dimensional plane. The "cubic rock salt structure" refers to the sodium chloride type (NaCl type) structure, which is a type of crystal structure, and specifically refers to a structure in which the face-centered cubic lattice (fcc) formed by each cation and anion is arranged with a displacement of half of the ridge of the unit lattice. Lithium transition metal oxides having this layered rock salt structure include, for example, LiNi x Co y Al z O2(NCA) or LiNi x Co y Mnz O2(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, 모노셀(MNC)의 에너지 밀도가 커지고 열안정성이 향상될 수 있다.

[0038] The above-described compound included 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 above-described compound and a compound to which a coating layer is added. Meanwhile, the coating layer added to the surface of the positive electrode active material may include, for example, an oxide, a hydroxide, an oxyhydroxide, an oxycarbonate, or a hydroxycarbonate of the coating elements below. The compound forming the coating layer may be 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 may be 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 may include, for example, a spray coating method or an immersion method.

[0039] When the positive electrode active material is a ternary lithium transition metal oxide such as NCA or NCM and contains nickel (Ni), it may be possible to increase the capacity density of the monocell (MNC) and reduce metal dissolution of the positive electrode active material in a charged state. As a result, the cycle characteristics of the monocell (MNC) in a charged state may be improved. Meanwhile, the “cycle characteristics” are characteristics indicating the degree to which the monocell (MNC) deteriorates due to charge / discharge of the monocell (MNC). A monocell (MNC) with high cycle characteristics may have a small degree of deterioration due to charge / discharge, and a monocell (MNC) with low cycle characteristics may have a large degree of deterioration due to charge / discharge.

[0040] The shape of the positive electrode active material may include particle shapes such as a sphere or an ellipsoid, for example. The particle size and content of the positive electrode active material are not particularly limited.

[0041] The solid electrolyte may include a sulfide-based solid electrolyte having excellent lithium ion conductivity characteristics. Examples of the sulfide-based solid electrolyte include Li2S-P2S5, Li2S-P2S5-LiX (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, Li2S-P2S5-Z. m S n (m, n are positive numbers, capital letter “Z” represents Ge, Zn or Ga), Li2S-GeS2, Li2S-SiS2-Li3PO4, Li2S-SiS2-Li p MO q (p, q are positive numbers, capital letter “M” is one of P, Si, Ge, B, Al, Ga In), Li 7-x PS 6-x Cl x (0≤x≤2), Li 7-xPS 6-x Br x (0≤x≤2), and Li 7-x PS 6-x I x It may include at least one selected from (0≤x≤2).

[0042] Sulfide-based solid electrolytes include, 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 including at least one selected from (0≤x≤2). In particular, the sulfide-based solid electrolyte may be an argyrodite-type compound including at least one selected from Li6PS5Cl, Li6PS5Br, and Li6PS5I.

[0043] Alternatively, the sulfide-based solid electrolyte is Li 7-a M a PS 6-c X cIt may be an argyrodite-type compound containing (0≤a≤2, (0≤c≤2)), where X may be F, Br, Cl, or a combination thereof. M is candium (Sc), yttrium (Y), titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt (Co), rhodium (Rh), iridium (Ir), nickel (Ni), palladium (Pd), platinum (Pt), copper (Cu), silver (Ag), gold (Au), zinc (Zn), cadmium (Cd), mercury (Hg), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), arsenic (As), antimony (Sb), bismuth (Bi), or a combination thereof. Can be.

[0044] The density of the argyrodite-type solid electrolyte may be 1.5 g / cc to 2.0 g / cc. Since the argyrodite-type solid electrolyte has a density of 1.5 g / cc or more, the internal resistance of the all-solid-state battery is reduced, and the defect of the solid electrolyte membrane being penetrated and short-circuited due to the formation of lithium dendrites can be prevented. The elastic modulus of the solid electrolyte may be, for example, 15 GPa to 35 GPa.

[0045] The solid electrolyte included in the positive electrode active material layer (120) may have a smaller median particle size (D50) than the solid electrolyte included in the solid electrolyte layer (300). For example, the median particle size (D50) of the solid electrolyte included in the positive electrode 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 median particle size (D50) of the solid electrolyte included in the solid electrolyte layer (300). Meanwhile, the median particle size (D50) may be a median diameter measured using a laser particle size distribution meter.

[0046] The positive electrode active material layer (120) may include a conductive material. The conductive material may be conductive without causing chemical changes in the mono-cell (MNC), thereby increasing the conductivity of the positive electrode active material and the solid electrolyte. The conductive material may include a carbon-based material. For example, the conductive material may include one or more selected from graphite, carbon black, acetylene black, carbon nanofibers, and carbon nanotubes.

[0047] The positive electrode active material layer (120) may further include a binder. The binder may include a material for binding the positive electrode active material, solid electrolyte, and conductive material included in the positive electrode active material layer (120) and improving bonding strength with the positive electrode current collector (110). For example, the binder may include polyvinylidene fluoride, styrene butadiene rubber (SBR), polytetrafluoroethylene, polyvinylidene fluoride, vinylidene fluoride / hexafluoropropylene copolymer, polyacrylonitrile, or polymethyl methacrylate.

[0048] When the total amount of the positive electrode active material, the solid electrolyte, the conductive material, and the binder is 100 parts by weight, the positive electrode active material layer (120) may include 85 parts by weight to 92 parts by weight of the positive electrode active material. The positive electrode active material layer (120) may include 0.5 parts by weight to 1.5 parts by weight of the binder.

[0049] Within the positive electrode active material layer (120), the conductive material may be present in an amount of 1 to 50 parts by weight relative to 100 parts by weight of the solid electrolyte. If the conductive material is present in an amount less than 1 part by weight relative to 100 parts by weight of the solid electrolyte, the electrical conductivity of the positive electrode active material layer (120) may be reduced. If the conductive material is present in an amount greater than 50 parts by weight relative to 100 parts by weight of the solid electrolyte, the conductive material ratio may be excessively high, and thus a covering layer covering the surface of the solid electrolyte may not be properly formed.

[0050] According to embodiments, the positive electrode active material layer (120) may further include at least one additive selected from the group consisting of a filler, a coating agent, a dispersant, and an ion conductive auxiliary agent in addition to the above-described positive electrode active material, solid electrolyte, conductive agent, and binder.

[0051] The solid electrolyte layer (300) is disposed between the positive electrode layer (100) and the negative electrode layer (200) and may include a sulfide-based solid electrolyte having excellent lithium ion conductivity characteristics. The solid electrolyte included in the solid electrolyte layer (300) may be the same as or different from any one of the materials that may be included in the solid electrolyte included in the positive electrode active material layer (120) described above.

[0052] The solid electrolyte layer (300) of one embodiment may include a sulfide-based solid electrolyte. The sulfide-based solid electrolyte may be manufactured by treating starting materials such as Li2S and P2S5 by a melting rapid cooling method or a mechanical milling method. In addition, a heat treatment may be performed after the treatment. The solid electrolyte may be amorphous, crystalline, or a mixture thereof. In addition, the solid electrolyte may include, for example, at least sulfur (S), phosphorus (P), and lithium (Li) as constituent elements among the above-described sulfide-based solid electrolyte materials. For example, the solid electrolyte may be a material including Li2S-P2S5. When using a sulfide-based solid electrolyte material including Li2S-P2S5 to form the solid electrolyte, the mixing molar ratio of Li2S and P2S5 is, for example, in the range of Li2S:P2S5=50:50 to 90:10.

[0053] Sulfide-based solid electrolytes include, 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 including at least one selected from (0≤x≤2). In particular, the sulfide-based solid electrolyte may be an argyrodite-type compound including at least one selected from Li6PS5Cl, Li6PS5Br, and Li6PS5I.

[0054] Alternatively, the sulfide-based solid electrolyte is Li 7-a M a PS 6-c X cIt may be an argyrodite-type compound containing (0≤a≤2, (0≤c≤2)), where X may be F, Br, Cl, or a combination thereof. M is candium (Sc), yttrium (Y), titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt (Co), rhodium (Rh), iridium (Ir), nickel (Ni), palladium (Pd), platinum (Pt), copper (Cu), silver (Ag), gold (Au), zinc (Zn), cadmium (Cd), mercury (Hg), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), arsenic (As), antimony (Sb), bismuth (Bi), or a combination thereof. Can be.

[0055] The density of the argyrodite-type solid electrolyte may be 1.5 g / cc to 2.0 g / cc. When the argyrodite-type solid electrolyte has a density of 1.5 g / cc or more, the internal resistance of the all-solid-state battery is reduced, and the defect of the solid electrolyte membrane being penetrated and short-circuited due to the formation of lithium dendrites can be prevented. The elastic modulus of the solid electrolyte is, for example, 15 GPa to 35 GPa.

[0056] The solid electrolyte layer (300) may further include a binder. The binder in the solid electrolyte layer (300) may be, for example, styrene butadiene rubber (SBR), polytetrafluoroethylene, polyvinylidene fluoride, polyethylene, etc., but is not limited thereto. 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).

[0057] 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 disposed. The negative electrode current collector (210) may include, for example, a material that does not react with lithium, i.e., does not form an alloy or a compound 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.

[0058] The negative electrode current collector (210) may be composed of one of the above-described metals, or may include an alloy or coating material of two or more metals. The negative electrode current collector (210) may have, for example, a plate shape or a foil shape. Meanwhile, in one embodiment, the negative electrode current collector (210) may be omitted.

[0059] The negative electrode coating layer (220) can allow lithium metal to grow between the negative electrode current collector (210) and the monocell (MNC) when charging. The negative electrode coating layer (220) can act as a protective layer for the lithium metal and suppress the precipitation and growth of lithium dendrites.

[0060] The cathode coating layer (220) may include a 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).

[0061] The cathode coating layer (220) may further include additives other than metal and carbon. The cathode coating layer (220) may further include, for example, at least one additive selected from the group consisting of a binder, a filler, a coating agent, a dispersant, and an ion conductive additive.

[0062] The negative electrode coating layer (220) may have a smaller thickness than 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 um to 20 um, 2 um to 10 um, or 3 um to 7 um. If the thickness of the negative electrode coating layer (220) is too thin, lithium dendrites formed between the negative electrode coating layer (220) and the negative electrode current collector (210) may collapse the negative electrode coating layer (220), thereby deteriorating the cycle characteristics of the monocell (MNC). If the thickness of the cathode coating layer (220) increases excessively, the energy density of the monocell (MNC) may decrease and the internal resistance of the monocell (MNC) due to the cathode coating layer (220) may increase, thereby deteriorating the cycle characteristics of the monocell (MNC).

[0063] Meanwhile, although not shown, a carbon layer may be further included to improve adhesion between the cathode coating layer (220) and the solid electrolyte layer (300).

[0064] According to embodiments of the present invention, the width (or width) of the anode layer (100) may be smaller than the width (or width) of the cathode layer (200). For example, the anode layer (100) may have a first width (W1) in a first direction (D1), and the cathode layer (200) may have a second width (W2) in the first direction (D1). The first width (W1) may be smaller than the second width (W2). Since the first width (W1) is smaller than the second width (W2), a gasket may be further provided around the perimeter of the anode layer (100) to compensate for this.

[0065] According to embodiments of the present invention, the solid electrolyte layer (300) may include a positive electrode electrolyte layer (300a) and a negative electrode electrolyte layer (300b). The positive electrode electrolyte layer (300a) and the negative electrode electrolyte layer (300b) may be laminated to form a single solid electrolyte layer (300). The positive electrode electrolyte layer (300a) may be in contact with the positive electrode active material layer (120), and the negative electrode electrolyte layer (300b) may be in contact with the negative electrode coating layer (220).

[0066] For example, the positive electrode electrolyte layer (300a) and the negative electrode electrolyte layer (300b) may include solid electrolytes having the same composition. As another example, the positive electrode electrolyte layer (300a) and the negative electrode electrolyte layer (300b) may include solid electrolytes having different compositions.

[0067] The positive electrolyte layer (300a) may have a first width (W1), and the negative electrolyte layer (300b) may have a second width (W2). In other words, the width (or width) of the positive electrolyte layer (300a) may be smaller than the width (or width) of the negative electrolyte layer (300b). The first width (W1) of the positive electrolyte layer (300a) may be smaller than the second width (W2) of the negative electrolyte layer (300b). Since the first width (W1) of the positive electrolyte layer (300a) is smaller than the second width (W2) of the negative electrolyte layer (300b), a gasket may be further provided around the perimeter of the positive electrolyte layer (300a) to compensate for this.

[0068] Referring back to FIG. 1, the cathode layer (100) and the cathode electrolyte layer (300b) can form a first electrode layer (ETL1). The anode layer (100) and the anode electrolyte layer (300a) can form a second electrode layer (ETL2).

[0069]

[0070] Fig. 2 is a block diagram schematically illustrating an all-solid-state battery manufacturing device according to embodiments of the present invention. Referring to Fig. 2, the all-solid-state battery manufacturing device may include an electrode stacking unit (ESP), a monocell transport unit (MTP), a cell stacking unit (CSP), and a discharge unit (DIP).

[0071] The electrode stacking unit (ESP) can be configured to sequentially stack a first electrode sheet (ETS1) and a second electrode sheet (ETS2) to form a mono cell (MNC). The mono cell transfer unit (MTP) can be configured to transfer the mono cell (MNC) from the electrode stacking unit (ESP) to the cell stacking unit (CSP). The cell stacking unit (CSP) can be configured to sequentially stack an elastic pad (EPL), a first mono cell (MNC1), and a second mono cell (MNC2) to form a stack cell (STC). The discharge unit (DIP) can receive the stack cell (STC) from the cell stacking unit (CSP). The discharge unit (DIP) can be configured to separate and discharge the stack cell (STC) into good products and defective products.

[0072] Hereinafter, with reference to FIGS. 3, 4, 5a, 5b, 6a, 6b, and 7, the electrode stacking portion (ESP), the monocell transport portion (MTP), the cell stacking portion (CSP), and the discharge portion (DIP) will be described in more detail.

[0073] Fig. 3 is a plan view illustrating an electrode stacking unit according to embodiments of the present invention. Referring to Fig. 3, the electrode stacking unit (ESP) may include a first stacking table (STT1), a first input unit (ISU1), a second input unit (ISU2), a first discharge unit (DPU1), and a rotational transport unit (RTU). The electrode stacking unit (ESP) may further include a pressurizing unit (PRU).

[0074] The first input unit (ISU1), the second input unit (ISU2), the first input unit (ISU1) and the second input unit (ISU2) can be sequentially arranged in a clockwise direction along the periphery of the first stacking table (STT1).

[0075] The first input unit (ISU1) may include a first magazine unit (MAG1), a first transfer unit (TFU1), and a first alignment unit (ALU1). A plurality of first electrode sheets (ETS1) may be loaded into the first magazine unit (MAG1). The first magazine unit (MAG1) may be configured to sequentially supply the plurality of first electrode sheets (ETS1).

[0076] The first transfer unit (TFU1) may be configured to transfer the first electrode sheet (ETS1) supplied from the first magazine unit (MAG1) onto the first alignment unit (ALU1). For example, the first transfer unit (TFU1) may have the form of a robot arm capable of gripping and transferring the first electrode sheet (ETS1).

[0077] The first alignment unit (ALU1) may be configured to measure the alignment of the first electrode sheet (ETS1) transferred through the first transfer unit (TFU1). For example, the first alignment unit (ALU1) may inspect the alignment of the first electrode sheet (ETS1) through vision. Through the first alignment unit (ALU1), the first electrode sheet (ETS1) may be accurately aligned on the first stage (STG1) of the first stacking table (STT1) to be described later.

[0078] The second input unit (ISU2) may include a second magazine unit (MAG2), a second transfer unit (TFU2), and a second alignment unit (ALU2). A plurality of second electrode sheets (ETS2) may be loaded into the second magazine unit (MAG2). The second magazine unit (MAG2) may be configured to sequentially supply the plurality of second electrode sheets (ETS2).

[0079] The second transfer unit (TFU2) may be configured to transfer the second electrode sheet (ETS2) supplied from the second magazine unit (MAG2) onto the second alignment unit (ALU2). The second alignment unit (ALU2) may be configured to measure the alignment of the second electrode sheet (ETS2) transferred via the second transfer unit (TFU2).

[0080] In one embodiment, the first electrode sheet (ETS1) may include the cathode layer (200) and the cathode electrolyte layer (300b) described above with reference to FIG. 1. The first electrode sheet (ETS1) may have an interface between the cathode coating layer (220) and the cathode electrolyte layer (300b) activated through pre-pressurization. The second electrode sheet (ETS2) may include the cathode layer (100) and the cathode electrolyte layer (300a) described above with reference to FIG. 1. The second electrode sheet (ETS2) may have an interface between the cathode active material layer (120) and the cathode electrolyte layer (300a) activated through pre-pressurization. The first electrode sheet (ETS1) may correspond to the first electrode layer (ETL1) described above with reference to FIG. 1. The second electrode sheet (ETS2) may correspond to the second electrode layer (ETL2) described above with reference to FIG. 1.

[0081] The first stacking table (STT1) may include a first stage (STG1) and a first rotation unit (DRU1). The first stage (STG1) may be connected to the first rotation unit (DRU1) and may rotate 360 ​​degrees. For example, the first rotation unit (DRU1) may be configured to rotate the first stage (STG1) clockwise. The first rotation unit (DRU1) may have the form of a rotatable index table. For example, the first rotation unit (DRU1) may include a rotation plate and a motor for driving the rotation plate.

[0082] The first stage (STG1) can be sequentially moved to the first to eighth positions (PO1-PO8) by the first rotation unit (DRU1). Specifically, the first electrode sheet (ETS1) supplied from the first input unit (ISU1) can be laminated on the first stage (STG) at the first position (PO1). An alignment inspection between the first electrode sheet (ETS1) and the first stage (STG) can be performed on the first stage (STG) that has moved to the second position (PO2).

[0083] The first stage (STG1) can be moved from the second position (PO2) to the third position (PO3). The second electrode sheet (ETS2) supplied from the second input unit (ISU2) can be laminated on the first stage (STG1) at the third position (PO3). The second electrode sheet (ETS2) can be laminated on the first electrode sheet (ETS1). An alignment inspection between the second electrode sheet (ETS2) and the first stage (STG1) can be performed on the first stage (STG1) that has moved to the fourth position (PO4).

[0084] The first stage (STG1) can be moved from the fourth position (PO4) to the fifth position (PO5). On the first stage (STG1) moved to the fifth position (PO5), a defect inspection of a laminate including a first electrode sheet (ETS1) and a second electrode sheet (ETS2) can be performed.

[0085] The first discharge unit (DPU1) may be configured to discharge defective products. For example, the first discharge unit (DPU1) may take the form of a robotic arm capable of gripping and transporting a defective laminate on the first stage (STG1).

[0086] The first stage (STG1) can move from the fifth position (PO5) to the sixth position (PO6). At the sixth position (PO6), the laminate on the first stage (STG) can be transferred to the pressurizing unit (PRU) by the rotary transfer unit (ROA). For example, the rotary transfer unit (ROA) can transfer the laminate on the first stage (STG) to the input roll (ISR) of the pressurizing unit (PRU).

[0087] The rotary transport unit (RTU) may include a first rotary gripper (ROG1), a second rotary gripper (ROG2), and a rotary axis (ROA). Each of the first rotary gripper (ROG1) and the second rotary gripper (ROG2) may be configured to transfer the laminate to a pressurizing unit (PRU). For example, each of the first rotary gripper (ROG1) and the second rotary gripper (ROG2) may have the form of a robot arm capable of gripping and transporting the laminate on the first stage (STG1). Each of the first rotary gripper (ROG1) and the second rotary gripper (ROG2) may grip the laminate on the first stage (STG1) and transfer it to an input roll (ISR) of the pressurizing unit (PRU).

[0088] In one embodiment, the first rotary gripper (ROG1) and the second rotary gripper (ROG2) are connected to a rotary axis (ROA) and can rotate. For example, the rotary axis (ROA) can be configured to rotate the first rotary gripper (ROG1) and the second rotary gripper (ROG2) clockwise or counterclockwise. The rotary axis (ROA) can include a drive motor.

[0089] Referring again to FIG. 3, the first rotary gripper (ROG1) and the second rotary gripper (ROG2) can be arranged in a rotationally symmetrical manner about the rotation axis (ROA). The positions of the first rotary gripper (ROG1) and the second rotary gripper (ROG2) can be switched as the rotation axis (ROA) rotates. Through this, each of the first rotary gripper (ROG1) and the second rotary gripper (ROG2) can transfer the laminate from the first stage (STG1) to the pressurizing unit (PRU).

[0090] In one embodiment, the operations of the first stacking table (STT1) and the rotary transport unit (RTU) can be performed continuously. For example, immediately after the first stage (STG1) of the first stacking table (STT1) rotates and is positioned at the sixth position (PO6), the first rotary gripper (ROG1) can grip the laminate on the sixth position (PO6). In addition, the time required for the first stacking table (STT1) and the rotary transport unit (RTU) to operate for one cycle can be substantially the same. For example, the time T1 required for the first stage (STG1) to rotate from the sixth position (PO6) and be positioned again at the sixth position (PO6) and the time T2 required for the first rotary gripper (ROG1) that has gripped the laminate to make a half-turn (180° turn) to load the laminate on the pressurizing unit (PRU) and then make a half-turn (180° turn) again to be positioned at the sixth position (PO6) can be configured to be substantially the same. This allows for continuous formation and discharge of the laminate.

[0091] FIG. 4 is a front view illustrating a pressurizing unit according to one embodiment of the present invention. Referring to FIGS. 3 and 4, the pressurizing unit (PRU) may be configured to pressurize a laminate received from a rotary transport unit (RTU). In one embodiment, the pressurizing unit (PRU) may include a driving member (DRM) and a pressing roller (PRR). The driving member (DRM) may be configured to transfer the laminate to the pressing roller (PRR). In one embodiment, the driving member (DRM) may include an upper member and a lower member, and the laminate may be loaded between the upper member and the lower member. The driving member (DRM) may be configured to travel in a first direction. The pressing roller (PRR) may apply a linear pressure to the laminate loaded on the driving member (DRM) to form a first monocell (MNC1).

[0092] The pressurization unit (PRU) can be configured to simultaneously perform a heating process while pressurizing the laminate. In other words, the pressurization unit (PRU) can perform both pressurization and heating processes. For example, the pressurization unit (PRU) can utilize a hydraulic or servo motor method.

[0093] Referring again to FIG. 4, the pressurizing unit (PRU) may further include a first supply roll (MFR1), a second supply roll (MFR2), a first return roll (MTR1), a second return roll (MTR2), an input roll (ISR), and a first driving belt (DRM1). The first supply roll (MFR1) may include a wound upper substrate, and the second supply roll (MFR2) may include a wound lower substrate.

[0094] The upper substrate can be unwound from a first supply roll (MFR1), run in a first direction (D1), and rewound from a first recovery roll (MTR1). The lower substrate can be unwound from a second supply roll (MFR2), run in a first direction (D1), and rewound from a second recovery roll (MTR1).

[0095] The input roll (ISR) may be configured to transport the laminate by placing it between the upper substrate and the lower substrate. In one embodiment, the input roll (ISR) may include an upper input roll and a lower input roll. For example, the upper substrate provided from the first supply roll (MFR1); the laminate delivered from the rotary transport unit (RTU); and the lower substrate provided from the second supply roll (MFR2) may pass between the upper input roll and the lower input roll. As a result, the laminate may be placed and transported between the upper substrate and the lower substrate.

[0096] The above laminate can be bonded while passing through a pressure roller (PRP), thereby forming a first monocell (MNC1).

[0097] The upper substrate can be recovered by a first recovery roll (MTR1), and the lower substrate can be recovered by a second recovery roll (MRT2). As the lower substrate is recovered, a first monocell (MNC1) traveling in a first direction (D1) can be seated on a first driving belt (DRM1). The first driving belt (DRM1) can be arranged adjacent to the second recovery roll (MTR2). The first driving belt (DRM1) can be configured to travel in the first direction (D1). The first driving belt (DRM1) can transport the seated first monocell (MNC1) to a monocell transport unit (MTP). For example, the first monocell (MNC1) located between the upper substrate and the lower substrate can be discharged by the first driving belt (DRM1) as the lower substrate is recovered. The first driving belt (DRM1) can transport the first monocell (MNC1) to the cell input unit (CIU) of the monocell transfer unit (MTP).

[0098] FIG. 5a is a plan view illustrating a monocell transport unit (MTP) according to one embodiment of the present invention. FIG. 5b is a plan view illustrating a cell stack unit (CSP) according to one embodiment of the present invention.

[0099] First, referring to FIG. 5a, the monocell transfer unit (MTP) may include a cell injection unit (CIU), an inspection unit (IPU), a first cell transfer unit (CTU1), and a second cell transfer unit (CTU2).

[0100] The cell injection unit (CIU) may be configured to transfer the first monocell (MNC1) from the pressurization unit (PRU) of the electrode stacking unit (ESP) to the inspection unit (IPU). For example, the cell injection unit (CIU) may have the form of a robotic arm capable of gripping and transporting the first monocell (MNC1). The cell injection unit (CIU) may grip the first monocell (MNC1) on the first driving belt (DRM1) of the pressurization unit (PRU) and transfer it to the inspection unit (IPU).

[0101] The inspection unit (IPU) may be configured to inspect the quality of the first monocell (MNC1). For example, the inspection unit (IPU) may inspect whether the first monocell (MNC1) is good or defective through vision. Although not illustrated, the inspection unit (IPU) may further include a monocell discharge unit. If a defect exists in the first monocell (MNC1), the monocell discharge unit may discharge the first monocell (MNC1). If no defect exists in the first monocell (MNC1), the first monocell (MNC1) may be transported to the cell stacking portion (CSP) by the first and second cell transport units (CTU1, CTU2) described below.

[0102] The first cell transfer unit (CTU1) may include a first cell gripper (CEG1) and a second drive belt (DRM2). The first cell gripper (CEG1) may be configured to transfer the first monocell (MNC1) from the inspection unit (IPU) to the second drive belt (DRM2). For example, the first cell gripper (CEG1) may have the form of a robot arm capable of gripping and transferring the first monocell (MNC1). Alternatively, the first cell gripper (CEG1) may have the form of an adsorber capable of adsorbing and transferring the first monocell (MNC1). The second drive belt (DRM2) may be configured to transfer the first monocell (MNC1) to the fourth input unit (ISU4) of the cell stack (CSP). In one embodiment, the second drive belt (DRM2) may travel in the first direction (D1).

[0103] The second cell transfer unit (CTU2) may include a second cell gripper (CEG2) and a third drive belt (DRM3).

[0104] In one embodiment, the second cell gripper (CEG2) may be configured to transfer the first monocell (MNC1) from the inspection unit (IPU) to the third drive belt (DRM3). For example, the second cell gripper (CEG2) may have the form of a robot arm capable of gripping and transporting the first monocell (MNC1). Alternatively, the second cell gripper (CEG2) may have the form of an adsorber capable of absorbing and transporting the first monocell (MNC1). The third drive belt (DRM3) may be configured to transport the first monocell (MNC1) to the fifth input unit (ISU5) of the cell stack (CSP). In one embodiment, the third drive belt (DRM3) may travel in the first direction (D1).

[0105] The second cell transfer unit (CTU2) may further include an inversion unit (IVU).

[0106] In one embodiment, the second cell gripper (CEG2) of the second cell transfer unit (CTU2) can be configured to transfer the first monocell (MNC1) from the inspection unit (IPU) to the inversion unit (IPU). The inversion unit (IVU) can be configured to invert the first monocell (MNC1). In other words, the first monocell (MNC1) can be inverted by the inversion unit (IVU) to form a second monocell (MNC2). The second cell gripper (CEG2) can transfer the first monocell (MNC1) from the inspection unit (IPU) to the inversion unit (IVU). The second cell gripper (CEG2) can transfer the second monocell (MNC2) formed in the inversion unit (IVU) to the third driving belt (DRM3). The third drive belt (DRM3) may be configured to transport the second monocell (MNC2) to the fifth input unit (ISU5) of the cell stack (CSP). In one embodiment, the third drive belt (DRM3) may run in the first direction (D1).

[0107] Next, referring to FIG. 5b, the cell stacking portion (CSP) may be configured to sequentially stack an elastic pad, a first monocell (MNC1), and a second monocell (MNC2) to form a stack cell (STC). The cell stacking portion (CSP) may include a third input unit (ISU3), a fourth input unit (ISU4), a fifth input unit (ISU5), and a second stacking table (STT2).

[0108] The third to fifth input units (ISU3-ISU5) can be arranged sequentially in a clockwise direction around the perimeter of the second stacking table (STT2).

[0109] The third input unit (ISU) may include a third magazine unit (MAG3), a third transfer unit (TFU3), and a third alignment unit (ALU3). A plurality of elastic pads may be loaded into the third magazine unit (MAG3). The third magazine unit (MAG3) may be configured to sequentially supply the plurality of elastic pads.

[0110] The third transfer unit (TFU3) may be configured to transfer the elastic pad supplied from the third magazine unit (MAG3) onto the third alignment unit (ALU3). For example, the third transfer unit (TFU3) may take the form of a robotic arm capable of gripping and transferring the elastic pad.

[0111] The third alignment unit (ALU3) may be configured to measure the alignment of the elastic pad transferred via the third transfer unit (TFU3). For example, the third alignment unit (ALU3) may inspect the alignment of the elastic pad via vision. Through the third alignment unit (ALU3), the elastic pad can be accurately aligned on the second stage (STG2) of the second stacking table (STT2) described below.

[0112] The fourth input unit (ISU4) may include a fourth transfer unit (TFU4) and a fourth sorting unit (ALU4). The fourth transfer unit (TFU4) may be configured to transfer the first monocell (MNC1) from the first cell transfer unit (CTU1) of the monocell transfer unit (MTP) to the fourth sorting unit (ALU4). For example, the fourth transfer unit (TFU4) may have the form of a robotic arm capable of grasping and transporting the first monocell (MNC1).

[0113] The fourth alignment unit (ALU4) may be configured to measure the alignment of the first monocell (MNC1) transferred via the fourth transfer unit (TFU4). For example, the fourth alignment unit (ALU4) may inspect the alignment of the first monocell (MNC1) via vision. Through the fourth alignment unit (ALU4), the first monocell (MNC1) may be accurately aligned on the second stage (STG2) of the second stacking table (STT2) described below.

[0114] The fifth input unit (ISU5) may include a fifth transfer unit (TFU5) and a fifth sorting unit (ALU5). The fifth transfer unit (TFU5) may be configured to transfer the second monocell (MNC2) transferred from the monocell transfer unit (MTP) onto the fifth sorting unit (ALU5). In one embodiment, the fifth transfer unit (TFU5) may be configured to transfer the second monocell (MNC2) transferred from the second cell transfer unit (CTU2) onto the fifth sorting unit (ALU5). For example, the fifth transfer unit (TFU5) may have the form of a robotic arm capable of grasping and transporting the second monocell (MNC2).

[0115] In one embodiment, the fifth input unit (ISU5) may further include an inversion unit (IVU). For example, when the second cell transfer unit (CTU2) described above with reference to FIG. 5A does not include the inversion unit (IVU), the first monocell (MNC1) may be transferred via the second cell transfer unit (CTU2). The fifth input unit (ISU5) may include the inversion unit (IVU), thereby inverting the transferred first monocell (MNC1). The inversion unit (IVU) may be configured to invert the first monocell (MNC1) upside down. In other words, the first monocell (MNC1) may be inverted by the inversion unit (IVU), thereby forming the second monocell (MNC2). The fifth transfer unit (TFU5) may transfer the first monocell (MNC1) from the second cell transfer unit (CTU2) to the inversion unit (IVU). The fifth transfer unit (TFU5) can transfer the second monocell (MNC2) formed in the inversion unit (IVU) to the fifth alignment unit (ALU5).

[0116] The fifth alignment unit (ALU5) may be configured to measure the alignment of the second monocell (MNC2) transferred via the fifth transfer unit (TFU5). For example, the fifth alignment unit (ALU5) may inspect the alignment of the second monocell (MNC2) via vision. Through the fifth alignment unit (ALU4), the second monocell (MNC2) may be accurately aligned on the second stage (STG2) of the second stacking table (STT2) described below.

[0117] The second stacking table (STT2) may include a second stage (STG2) and a second rotation unit (DRU2). The second stage (STG2) may be connected to the second rotation unit (DRU2) and may rotate 360 ​​degrees. For example, the second rotation unit (DRU2) may be configured to rotate the second stage (STG2) clockwise. The second rotation unit (DRU2) may have the form of a rotatable index table. For example, the second rotation unit (DRU2) may include a rotation plate and a motor for driving the rotation plate.

[0118] The second stage (STG2) can be sequentially moved to the 11th to 18th positions (PO11-PO18) by the second rotation unit (DRU2). Specifically, an elastic pad supplied from the third input unit (ISU3) can be stacked on the second stage (STG2) at the 11th position (PO11). An alignment check between the elastic pad and the second stage (STG2) can be performed on the second stage (STG2) that has moved to the 12th position (PO12).

[0119] The second stage (STG2) can be moved from the 12th position (PO2) to the 15th position (PO15). The first monocell (MNC1) supplied from the 4th input unit (ISU4) can be stacked on the second stage (STG2) at the 15th position (PO15). The first monocell (MNC1) can be stacked on an elastic pad. An alignment check between the first monocell (MNC1) and the stage (STG) can be performed on the second stage (STG2) that has moved to the 16th position (PO16).

[0120] The second stage (STG2) can be moved from the 16th position (PO16) to the 17th position (PO17). The second monocell (MNC2) supplied from the 5th input unit (ISU5) can be stacked on the second stage (STG2) at the 17th position (PO17). The second monocell (MNC2) can be stacked on the first monocell (MNC1). An alignment check between the second monocell (MNC2) and the second stage (STG2) can be performed on the second stage (STG2) that has moved to the 18th position (PO18).

[0121] The second stage (STG2) can be moved from the 18th position (PO18) to the 11th position (PO11). An elastic pad supplied from the third input unit (ISU3) can be laminated on the second stage (STG2) at the 11th position (PO11). The elastic pad can be laminated on the second monocell (MNC2). An alignment check between the elastic pad and the second stage (STG2) can be performed on the second stage (STG2) that has moved to the 12th position (PO12).

[0122] In one embodiment, a first elastic pad, a first monocell (MNC1), a second monocell (MNC2), and a second elastic pad may be sequentially stacked on a second stage (STG2) to form a stack cell (STC). A defect inspection of the stack cell (STC) may be performed on the second stage (STG2) located at the twelfth position (PO12).

[0123] The second stage (STG2) can move from the 12th position (PO12) to the 13th position (PO13). At the 13th position (PO13), the stack cell (STC) on the second stage (STG2) can be transferred to the discharge part (DIP).

[0124]

[0125] FIG. 6a is a plan view illustrating a monocell transfer unit (MTP) according to another embodiment of the present invention. FIG. 6b is a plan view illustrating a cell stacking unit (CSP) according to another embodiment of the present invention.

[0126] First, referring to FIG. 6a, the monocell transport unit (MTP) may include a cell input unit (CIU), an inspection unit (IPU), a cell loading unit (CLU), a fourth magazine unit (MAG4), and a fifth magazine unit (MAG5).

[0127] The cell injection unit (CIU) and inspection unit (IPU) may have the same or similar configuration as described above with reference to FIG. 5a.

[0128] The cell loading unit (CLU) may be configured to load the first monocell (MNC1) that has been inspected by the inspection unit (IPU) into the fourth magazine unit (MAG4) or the fifth magazine unit (MAG5). In one embodiment, the cell loading unit (CLU) may include a loading gripper (LOG). For example, the loading gripper (LOG) may take the form of a robot arm capable of gripping and loading the first monocell (MNC1).

[0129] In one embodiment, the cell loading unit (CLU) may further include an inversion unit (IVU). The inversion unit (IVU) may be configured to invert the first monocell (MNC1) upside down. In other words, the first monocell (MNC1) may be flipped over by the inversion unit (IVU) to form a second monocell (MNC2). The cell loading unit (CLU) may be configured to load the first monocells (MNC1) into the fourth magazine unit (MAG4) and the second monocells (MNC2) into the fifth magazine unit (MAG5). The loading gripper (LOG) of the cell loading unit (CLU) may load some of the first monocells (MNC1) into the fourth magazine unit (MAG4) and transfer the remaining first monocells (MNC1) to the inversion unit (IVU). The loading gripper (LOG) can load the second monocells (MNC2) formed in the inversion unit (IVU) into the fifth magazine unit (MAG5).

[0130] The fourth magazine unit (MAG4) may be provided to the fourth input unit (ISU4) of the cell stack portion (CSP) described later. The fifth magazine unit (MAG5) may be provided to the fifth input unit (ISU5) of the cell stack portion (CSP) described later.

[0131] Although not shown, the monocell transport unit (MTP) may further include a magazine transport unit. The magazine transport unit may be configured to transport the fourth magazine unit (MAG4) and the fifth magazine unit (MAG5) to the cell stacking portion (CSP). In one embodiment, the magazine transport unit may be configured to transport the fourth magazine unit (MAG4) to the fourth insertion unit (ISU4) and to transport the fifth magazine unit (MAG5) to the fifth insertion unit (ISU5).

[0132] According to embodiments of the present invention, the first and second monocells (MNC1, MNC2) can be stored in a magazine and then transported, thereby resolving an imbalance that may occur due to a difference in monocell manufacturing time and stack cell manufacturing time.

[0133] Next, referring to FIG. 6b, the cell stack (CSP) may include a third input unit (ISU3), a fourth input unit (ISU4), a fifth input unit (ISU5), and a second stacking table (STT2).

[0134] The third to fifth input units (ISU3-ISU5) can be arranged sequentially in a clockwise direction around the perimeter of the second stacking table (STT2).

[0135] The third input unit (ISU) may include a third magazine unit (MAG3), a third transfer unit (TFU3), and a third alignment unit (ALU3). A plurality of elastic pads may be loaded into the third magazine unit (MAG3). The third magazine unit (MAG3) may be configured to sequentially supply the plurality of elastic pads.

[0136] The third transfer unit (TFU3) may be configured to transfer the elastic pad supplied from the third magazine unit (MAG3) onto the third alignment unit (ALU3). For example, the third transfer unit (TFU3) may take the form of a robotic arm capable of gripping and transferring the elastic pad.

[0137] The third alignment unit (ALU1) may be configured to measure the alignment of the elastic pad transferred via the third transfer unit (TFU3). For example, the third alignment unit (ALU3) may inspect the alignment of the elastic pad via vision. Through the third alignment unit (ALU3), the elastic pad can be accurately aligned on the second stage (STG2) of the second stacking table (STT2) described below.

[0138] The fourth input unit (ISU4) may include a fourth magazine unit (MAG4), a fourth transfer unit (TFU4), and a fourth alignment unit (ALU4).

[0139] The fourth magazine unit (MAG4) can be loaded with a plurality of first monocells (MNC1). The fourth magazine unit (MAG4) can be configured to sequentially supply the plurality of first monocells (MNC1). The fourth magazine unit (MAG4) can be transferred to the fourth input unit (ISU4) by the magazine transfer unit.

[0140] The fourth transfer unit (TFU4) may be configured to transfer the first monocell (MNC1) transferred from the fourth magazine unit (MAG4) onto the fourth sorting unit (ALU4). For example, the fourth transfer unit (TFU4) may have the form of a robotic arm capable of gripping and transferring the first monocell (MNC1).

[0141] The fourth alignment unit (ALU4) may be configured to measure the alignment of the first monocell (MNC1) transferred via the fourth transfer unit (TFU4). For example, the fourth alignment unit (ALU4) may inspect the alignment of the first monocell (MNC1) via vision. Through the fourth alignment unit (ALU4), the first monocell (MNC1) may be accurately aligned on the second stage (STG2) of the second stacking table (STT2) described below.

[0142] The fifth input unit (ISU5) may include a fifth magazine unit (MAG5), a fifth transfer unit (TFU5), and a fifth alignment unit (ALU5). The fifth input unit (ISU5) may further include an inversion unit (IVU).

[0143] In one embodiment, the fifth magazine unit (MAG5) may be loaded with a plurality of second monocells (MNC2). For example, when the cell loading unit (CLU) described above with reference to FIG. 6A includes an inversion unit, the fifth magazine unit (MAG5) may be loaded with a plurality of second monocells (MNC2). The fifth magazine unit (MAG5) may be configured to sequentially supply the plurality of second monocells (MNC2). The fifth magazine unit (MAG5) may be transferred to the fifth input unit (ISU5) by a magazine transfer unit. The fifth transfer unit (TFU5) may be configured to transfer the second monocells (MNC2) transferred from the fifth magazine unit (MAG5) onto the fifth alignment unit (ALU5). For example, the fifth transfer unit (TFU5) may have the form of a robot arm capable of gripping and transferring the second monocells (MNC2).

[0144] In another embodiment, the fifth magazine unit (MAG5) may be loaded with a plurality of first monocells (MNC1). For example, when the cell loading unit (CLU) described above with reference to FIG. 6A does not include an inversion unit, the fifth magazine unit (MAG5) may be loaded with a plurality of first monocells (MNC1). The fifth magazine unit (MAG5) may be configured to sequentially supply the plurality of first monocells (MNC1). The fifth transfer unit (TFU5) may be configured to transfer the first monocells (MNC1) transferred from the fifth magazine unit (MAG5) to the inversion unit (IVU). The inversion unit (IVU) may be configured to invert the first monocells (MNC1) upside down. In other words, the first monocells (MNC1) may be inverted by the inversion unit (IVU) to form the second monocells (MNC2). The fifth transfer unit (TFU5) may be configured to transfer the second monocell (MNC2) from the inversion unit (IVU) to the fifth sorting unit (ALU5). For example, the fifth transfer unit (TFU5) may take the form of a robotic arm capable of grasping and transferring the second monocell (MNC2).

[0145] The fifth alignment unit (ALU5) may be configured to measure the alignment of the second monocell (MNC2) transferred via the fifth transfer unit (TFU5). For example, the fifth alignment unit (ALU5) may inspect the alignment of the second monocell (MNC2) via vision. Through the fourth alignment unit (ALU4), the second monocell (MNC2) may be accurately aligned on the second stage (STG2) of the second stacking table (STT2) described below.

[0146] The second stacking table (STT2) may have the same or similar configuration as the second stacking table (STT2) described above with reference to FIG. 6b. At the 13th position (PO13), the stack cell (STC) on the second stage (STG2) may move to the discharge portion (DIP).

[0147]

[0148] FIG. 7 is a plan view illustrating a discharge unit (DIP) according to embodiments of the present invention. The discharge unit (DIP) may include a discharge gripper (EGR), a second discharge unit (DPU2), and a taping unit (TPU). The discharge gripper (EGR) may be configured to transfer a stack cell (STC) received from a cell stack unit (CSP) to the taping unit (TPU) or the second discharge unit (DPU2). The discharge gripper (EGR) may rotate clockwise or counterclockwise while holding the stack cell (STC). If there is a defect in the stack cell (STC), the discharge gripper (EGR) may discharge the stack cell (STC) to the second discharge unit (DPU2). If there is no defect in the stack cell (STC), the discharge gripper (EGR) may transfer the stack cell (STC) to the taping unit (TPU).

[0149] The taping unit (TPU) may be configured to tape the stack cell (STC) received from the discharge gripper (EGR). The taping unit (TPU) may rotate the stack and wind the tape on the stack.

[0150] A taped stack cell (STC) can be discharged from a taping unit (TPU) to an ejection unit (ETR). In one embodiment, the ejection unit (ETR) can be configured to grip the taped stack cell (STC). For example, the ejection unit (ETR) can include a gripper. In another embodiment, the ejection unit (ETR) can be configured to absorb the taped stack cell (STC). For example, the ejection unit (ETR) can include an absorber.

[0151] The ejector discharge unit (ETR) may include a tray capable of loading stack cells (STC). An all-solid-state battery may be manufactured using the stack cells (STC) loaded in the ejector discharge unit (ETR).

[0152]

[0153] FIGS. 8 to 15 are cross-sectional views illustrating a method for manufacturing an all-solid-state battery according to embodiments of the present invention. In this embodiment, a method for manufacturing an all-solid-state battery is described using the all-solid-state battery manufacturing apparatus described above with reference to FIGS. 2 to 4, FIGS. 5a, 5b, FIGS. 6a, 6b, and 7.

[0154] Referring to FIGS. 3 and 9, a first electrode sheet (ETS1) may be provided on a first stage (STG1) at a first position (PO1). The first electrode sheet (ETS1) may be the same as the first electrode layer (ETL1) described with reference to FIG. 1.

[0155] Referring to FIGS. 3 and 9, a second electrode sheet (ETS2) may be provided on the second stage (STG2) of the third position (PO3). The second electrode sheet (ETS2) may be the same as the second electrode layer (ETL2) described with reference to FIG. 1. Through this, a laminate (STS) in which the second electrode sheet (ETS2) is laminated on the first electrode sheet (ETS1) may be formed.

[0156] In one embodiment, the first electrode sheet (ETS1) may include the negative electrode layer (200) and the negative electrode electrolyte layer (300b) described above with reference to FIG. 1. The first electrode sheet (ETS1) may be prepared by sequentially coating a negative electrode coating layer (220) and a negative electrode electrolyte layer (300b) on a negative electrode current collector (210) and then pressing the same. The pressing process of the first electrode sheet (ETS1) may be performed at a lower pressure than the pressing process to be performed in a pressing unit (PRU) described below. Through the pressing process, the interface between the negative electrode coating layer (220) and the negative electrode electrolyte layer (300b) of the first electrode sheet (ETS1) may be activated. The second electrode sheet (ETS2) may include the positive electrode layer (100) and the positive electrode electrolyte layer (300a) described above with reference to FIG. 1. The second electrode sheet (ETS2) can be prepared by sequentially coating a positive electrode active material layer (120) and a positive electrode electrolyte layer (300a) on a positive electrode current collector (110) and then pressurizing them. The pressurizing process of the second electrode sheet (ETS2) can be performed at a lower pressure than the pressurizing process to be performed in a pressurizing unit (PRU) to be described later. Through the pressurizing process, the interface between the positive electrode active material layer (120) and the positive electrode electrolyte layer (300a) of the second electrode sheet (ETS2) can be activated.

[0157] In another embodiment, the first electrode sheet (ETS1) may include the positive electrode layer (100) and the positive electrode electrolyte layer (300a) previously described with reference to FIG. 1. The second electrode sheet (ETS2) may include the negative electrode layer (200) and the negative electrode electrolyte layer (300b) previously described with reference to FIG. 1.

[0158] Referring to FIGS. 3 and 10, the laminate can be transferred to the pressurizing unit (PRU) by the rotary transfer unit (RTU). The first rotary gripper (ROG1) can advance in the opposite direction to the first direction (D1) and be positioned on the first stage (STG1), and the second rotary gripper (ROG2) can advance in the first direction (D1) and be positioned on the pressurizing unit (PRU). Thereafter, the first rotary gripper (ROG1) can grip the laminate on the first stage (STG1), and the second rotary gripper (ROG2) can release the grip on the pressurizing unit (PRU). For example, when the second rotary gripper (ROG2) is gripping the laminate, it can release the grip to load the laminate on the pressurizing unit (PRU). Specifically, the laminate can be loaded on the input roll (ISR) of the pressurizing unit (PRU). Thereafter, the first rotary gripper (ROG1) can move backward in the first direction (D1), and the second rotary gripper (ROG2) can move backward in the opposite direction to the first direction (D1). Thereafter, the rotary axis (ROA) rotates, so that the positions of the first rotary gripper (ROG1) and the second rotary gripper (ROG2), which are arranged in a rotationally symmetrical form, can be switched.

[0159] The second rotary gripper (ROG2) whose position has been switched can perform the operation of the first rotary gripper (ROG1) before the position switch, and the first rotary gripper (ROG1) whose position has been switched can perform the operation of the second rotary gripper (ROG2) before the position switch. Thereafter, the rotational axis (ROA) rotates again, so that the positions of the first rotary gripper (ROG1) and the second rotary gripper (ROG2) arranged in a rotationally symmetrical form can be switched again.

[0160] In this way, the laminate can be transferred from the first stage (STG1) to the pressurizing unit (PRU) through the first rotary gripper (ROG1) and the second rotary gripper (ROG2) which are switched in position.

[0161] Referring to FIGS. 4 and 11, a pressurizing and heating process can be performed on a stack (STS) within a pressurizing unit (PRU). In one embodiment, the interface between the positive electrolyte layer (300a) and the negative electrolyte layer (300b) within the stack (STS) can be activated by the pressurizing and heating process. In other words, a first monocell (MNC1) can be formed by the pressurizing and heating process. The first monocell (MNC1) can be substantially the same as the monocell (MNC) described above with reference to FIG. 1. The first monocell (MNC1) can be transferred to the cell stacking unit (CSP) by the monocell transfer unit (MTP) described with reference to FIGS. 5A and 6A.

[0162] An all-solid-state battery can be manufactured using the first monocell (MNC1) transferred to the cell stack (CSP) by the following method.

[0163] Referring to FIGS. 5b, 6b, and 12, an elastic pad (ELP) may be provided on the second stage (STG2) at the eleventh position (PO11). The elastic pad (ELP) may be supplied through the third magazine unit (MAG3) of the third input unit (ISU3). The elastic pad (ELP) may alleviate stress generated due to volume changes in the battery cell during charging and discharging.

[0164] Referring to FIGS. 5b, 6b, and 13, a first monocell (MNC1) may be provided on the second stage (STG2) at the fifteenth position (PO15). The first monocell (MNC1) may be aligned and stacked on an elastic pad (ELP). The first monocell (MNC1) may be supplied through the fourth magazine unit (MAG4) of the fourth input unit (ISU4). The first monocell (MNC1) may be substantially the same as the first monocell (MNC1) described above with reference to FIG. 1. The cathode layer (200) of the first monocell (MNC1) may be in direct contact with the elastic pad (ELP). The anode layer (100) of the first monocell (MNC1) may be exposed upward.

[0165] Referring to FIGS. 5b, 6b and 14, a second monocell (MNC2) may be provided on the second stage (STG2) at the 17th position (PO17). The second monocell (MNC2) may be aligned and stacked on the first monocell (MNC1). The second monocell (MNC2) may be an upside-down version of the first monocell (MNC1). The second monocell (MNC2) may be supplied through the fifth magazine unit (MAG5) of the fifth input unit (ISU5). The anode layer (100) of the second monocell (MNC2) may be in direct contact with the anode layer (100) of the first monocell (MNC1). The cathode layer (200) of the second monocell (MNC2) may be exposed upward.

[0166] Referring to FIGS. 5b, 6b, and 15, the lamination process described above with reference to FIGS. 12 to 14 may be repeatedly performed while the second stage (STG2) is rotated by the second rotation unit (DRU2). The lamination process may be performed n times. n may be an integer greater than or equal to 1. After the lamination process is repeatedly performed, an elastic pad (ELP) may be further provided on the second stage (STG2) at the 11th position (PO11). Through this, a stack cell (STC) may be formed on the second stage (STG2) at the 11th position (PO11).

[0167] In one embodiment, the stack cell (STC) may include a laminate in which an elastic pad (EPL), a first monocell (MNC1), and a second monocell (MNC2) are sequentially stacked n times. n may be an integer greater than or equal to 3. The stack cell (STC) may further include a plurality of elastic pads (ELP). The first monocell (MNC1) and the second monocell (MNC2) may be sandwiched between adjacent elastic pads (ELP).

[0168] The stack cell (STC) can be discharged through the discharge port (DIP). For example, the stack cell (STC) can be transferred to the taping unit (TPU) through the discharge gripper (EGR) of the discharge port (DIP). A taping process can be performed on the stack cell (STC) within the taping unit (TPU). The taped stack cell (STC) can be loaded into the battery discharge unit (ETR).

[0169] According to embodiments of the present invention, monocells and stack cells can be manufactured through a series of continuous processes by laminating pre-pressurized first and second electrode sheets. This can improve the efficiency of the manufacturing process for all-solid-state batteries.

Claims

1. An electrode stacking unit, wherein the electrode stacking unit is configured to sequentially stack a first electrode sheet and a second electrode sheet to form a plurality of first monocells; A monocell transfer unit, wherein the monocell transfer unit is configured to form second monocells by inverting some of the first monocells and transfer the first and second monocells to a cell stacking unit; and Including a cell stack, The above electrode laminate: A first stacking table including a first stage and a first rotation unit, wherein the first rotation unit is configured to cycle through a first position, a second position, and a third position while the first stage rotates; A first input unit adjacent to the first position, the first input unit being configured to laminate a first electrode sheet on the first stage; A second input unit adjacent to the second position, the second input unit being configured to laminate a second electrode sheet on the first stage; a rotary transport unit adjacent to the third position; and Including a pressurizing unit adjacent to the above rotating transport unit, The above rotating transport unit is configured to transfer a laminate including the first electrode sheet and the second electrode sheet to the pressurizing unit, An all-solid-state battery manufacturing device, wherein the pressurizing unit is configured to perform a pressurizing process on the laminate to form the first monocell.

2. In paragraph 1, The above first input unit: A first magazine unit configured to supply the first electrode sheet; A first transfer device configured to transfer the first electrode sheet; and An all-solid-state battery manufacturing device, comprising a first alignment unit for inspecting alignment of the first electrode sheet.

3. In paragraph 1, The above rotary transport unit: Including a first rotary gripper, a second rotary gripper and a rotary shaft, An all-solid-state battery manufacturing device, wherein the first and second rotary grippers are arranged to form rotational symmetry with respect to the rotation axis, and the positions of the first and second rotary grippers are switched as the rotation axis rotates.

4. In paragraph 1, The above first electrode sheet includes a cathode layer and a cathode solid electrolyte layer, An all-solid-state battery manufacturing device, wherein the second electrode sheet includes a cathode layer and a cathode solid electrolyte layer.

5. In paragraph 4, The above monocell transport unit: Including a reversing unit; a first cell transfer unit; and a second cell transfer unit, The above-mentioned inversion unit is configured to invert some of the plurality of first monocells upside down to form the second monocells, The first cell transfer unit is configured to transfer the first monocells to the cell stacking unit, An all-solid-state battery manufacturing device, wherein the second cell transfer unit is configured to transfer the second monocells to the cell stacking unit.

6. In paragraph 1, The above monocell transport unit: Including a reversing unit; a cell loading unit; a second magazine unit; the second magazine unit; and a magazine transfer unit, The above inversion unit is configured to invert some of the first monocells upside down to form the second monocells, The cell loading unit is configured to load the first monocells into the second magazine unit and to load the second monocells into the third magazine unit. An all-solid-state battery manufacturing device, wherein the magazine transfer unit is configured to transfer the second and third magazine units to the cell stacking unit.

7. In paragraph 1, The above cell stacking portion: A second stacking table including a second stage and a second rotation unit, wherein the second rotation unit is configured to cycle through an 11th position, a 12th position, a 13th position, and a 14th position while the second stage rotates; A third input unit adjacent to the 11th position, the third input unit being configured to laminate the elastic pad on the second stage; a fourth injection unit adjacent to the 12th position, the fourth injection unit being configured to stack the first monocell on the second stage; and Including a fifth input unit adjacent to the 13th position, An all-solid-state battery manufacturing device, wherein the fifth input unit is configured to stack the second monocell on the second stage.

8. In paragraph 7, The above third input unit: A fourth magazine unit configured to supply the elastic pad; A third transfer device configured to transfer the above elastic pad, and An all-solid-state battery manufacturing device comprising a third alignment unit for checking the alignment of the elastic pad.

9. In paragraph 1, The above all-solid-state battery manufacturing device further includes a discharge unit, The above discharge part: A discharge gripper adjacent to the above cell stack; A second discharge unit that receives a defective laminate from the discharge gripper; and An all-solid-state battery manufacturing device comprising a taping unit that receives a good laminate from the above discharge gripper.

10. An electrode stacking unit, wherein the electrode stacking unit is configured to sequentially stack a first electrode sheet and a second electrode sheet to form a plurality of first monocells; A monocell transfer unit, wherein the monocell transfer unit is configured to transfer the first monocells to the cell stacking unit; and Including a cell stack, The above cell stacking portion: Includes a reversing unit, a second stacking table, a third input unit, a fourth input unit and a fifth input unit, An all-solid-state battery manufacturing device, wherein the above-mentioned inversion unit is configured to invert some of the first monocells upside down to form second monocells.

11. In the 10th paragraph, the electrode laminated portion: A first stacking table including a first stage and a first rotation unit, wherein the first rotation unit is configured to cycle through a first position, a second position, and a third position while the first stage rotates; A first input unit adjacent to the first position, the first input unit being configured to laminate a first electrode sheet on the first stage; A second input unit adjacent to the second position, the second input unit being configured to laminate a second electrode sheet on the first stage; a rotary transport unit adjacent to the third position; and Including a pressurizing unit adjacent to the above rotating transport unit, The above rotating transport unit is configured to transfer a laminate including the first electrode sheet and the second electrode sheet to the pressurizing unit, The above pressurizing unit is configured to perform a pressurizing process on the laminate to form the first monocell.

12. In paragraph 11, The above first input unit: A first magazine unit configured to supply the first electrode sheet; A first transfer device configured to transfer the first electrode sheet; and An all-solid-state battery manufacturing device, comprising a first alignment unit for inspecting alignment of the first electrode sheet.

13. In paragraph 10, The above first electrode sheet includes a cathode layer and a cathode solid electrolyte layer, An all-solid-state battery manufacturing device, wherein the second electrode sheet includes a cathode layer and a cathode solid electrolyte layer.

14. In paragraph 10, The above monocell transport unit: Including a cell loading unit; a second magazine unit; a third magazine unit; and a magazine transfer unit, The above cell loading unit is configured to load the first monocells into the second and third magazine units, An all-solid-state battery manufacturing device, wherein the magazine transfer unit is configured to transfer the second and third magazine units to the cell stacking unit.

15. In paragraph 10, The second stacking table includes a second stage and a second rotation unit, wherein the second rotation unit is configured to cycle through the 11th position, the 12th position, the 13th position, and the 14th position while the second stage rotates. The third input unit is configured to be adjacent to the 11th position and to laminate the elastic pad on the second stage, The fourth injection unit is adjacent to the 12th position and is configured to stack the first monocell on the second stage, An all-solid-state battery manufacturing device, wherein the fifth input unit is adjacent to the 13th position and is configured to stack the second monocell on the second stage.

16. In paragraph 10, The above all-solid-state battery manufacturing device further includes a discharge unit, The above discharge part: A discharge gripper adjacent to the above cell stack; A second discharge unit that receives a defective laminate from the discharge gripper; and An all-solid-state battery manufacturing device comprising a taping unit that receives a good laminate from the above discharge gripper.

17. Forming a plurality of first monocells by sequentially stacking the first electrode sheet and the second electrode sheet; Forming second monocells by inverting some of the first monocells; An elastic pad, comprising: sequentially stacking the first monocell and the second monocell to form a stack cell; Each of the plurality of first monocells is formed by: Laminating a first electrode sheet on a first stage at a first position; Laminating a second electrode sheet on the first stage at the second position; and Including performing a pressurizing process on a laminate including the first and second electrode sheets, A method for manufacturing an all-solid-state battery, wherein the first stage rotates and cycles between the first position and the second position.

18. In paragraph 17, Forming the above stack cell: Laminating an elastic pad on the second stage at the 11th position; Stacking the first monocell on the second stage at the 12th position; Stacking the second monocell on the second stage at the 13th position; and A method for manufacturing an all-solid-state battery, wherein the second stage rotates and cycles through the 11th position, the 12th position, and the 13th position.

19. In paragraph 17, The second stage is formed by circulating the 11th to 13th positions n times while the elastic pad, the first monocell, and the second monocell are stacked n times, A method for manufacturing an all-solid-state battery, wherein n is an integer greater than or equal to 3.

20. In paragraph 17, The above first electrode sheet includes a cathode layer and a cathode solid electrolyte layer, A method for manufacturing an all-solid-state battery, wherein the second electrode sheet includes a cathode layer and a cathode solid electrolyte layer.

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