Device for manufacturing all-solid-state battery, and method for manufacturing all-solid-state battery using same

Abstract

The present invention relates to a device for manufacturing an all-solid-state battery and, more specifically, comprises: an electrode supply unit for supplying monocells; a transfer unit for transferring the monocells in a second direction; and a pressing unit configured to press the monocells which are being transferred, comprising a first pressing roller and a second pressing roller spaced apart from each other in the second direction, wherein the first pressing roller is configured to partially press the monocells and the second pressing roller is configured to entirely press the monocells.

Description

All-solid-state battery manufacturing device and all-solid-state battery manufacturing method 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 method for transporting and pressurizing an all-solid-state battery cell.

[0002]

[0003] Recent industrial demands have led to the active development of batteries with high energy density and safety. For example, lithium-ion batteries are being used not only in information and communication devices, but also in the automotive sector. Safety is particularly important in the automotive sector, as it is directly related to life.

[0004] All-solid-state batteries are being proposed, replacing the electrolyte with a solid electrolyte. By eliminating the use of flammable organic dispersion media, all-solid-state batteries can significantly reduce the risk of fire or explosion in the event of a short circuit.

[0005]

[0006] The problem to be solved by the present invention is to provide an all-solid-state battery manufacturing device capable of stepwise pressurizing a cell.

[0007] 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.

[0008]

[0009] An all-solid-state battery manufacturing device according to one embodiment of the present invention comprises: an electrode supply unit configured to supply a monocell; a transport unit configured to transport the monocell in a second direction; and a pressurizing unit configured to pressurize the transported monocell, wherein the pressurizing unit comprises: a first pressurizing roller and a second pressurizing roller spaced apart from each other in the second direction, wherein the first pressurizing roller is configured to partially pressurize the monocell, and the second pressurizing roller is configured to entirely pressurize the monocell.

[0010] According to another embodiment of the present invention, a method for manufacturing an all-solid-state battery includes forming a monocell by stacking a second electrode body on a first electrode body; transporting the monocell in a second direction; and pressing the monocell transported in the second direction with a plurality of pressure rollers, wherein pressing the monocell may include: partially pressing the monocell with a first pressure roller; and after the partial pressing process, fully pressing the monocell with a second pressure roller.

[0011]

[0012] The all-solid-state battery manufacturing device according to the present invention can be manufactured through a series of processes that pressurize cells step by step, thereby forming an all-solid-state battery without a separate alignment process. This allows the manufacturing process of the all-solid-state battery to be performed efficiently.

[0013]

[0014] FIG. 1 is a cross-sectional view illustrating an all-solid-state battery according to embodiments of the present invention.

[0015] Figure 2 is a plan view illustrating an all-solid-state battery manufacturing device according to embodiments of the present invention.

[0016] FIG. 3a and FIG. 3b are perspective views illustrating an all-solid-state battery manufacturing device according to one embodiment of the present invention.

[0017] Figures 4a to 4c are front views of an all-solid-state battery monocell according to one embodiment of the present invention.

[0018] FIG. 5 is a perspective view illustrating an all-solid-state battery manufacturing device according to one embodiment of the present invention.

[0019] Figures 6a to 6c are plan views of an all-solid-state battery monocell according to one embodiment of the present invention.

[0020] FIG. 7a and FIG. 7b are drawings showing a guide of an all-solid-state battery manufacturing device according to one embodiment of the present invention.

[0021] FIGS. 8A to 8C are cross-sectional views of a pressure roller of an all-solid-state battery manufacturing device according to one embodiment of the present invention.

[0022] FIGS. 9 and 10 are perspective views showing a rotary moving unit of an all-solid-state battery manufacturing device according to one embodiment of the present invention.

[0023] FIG. 11 and FIG. 12 are flowcharts showing the sequence of a method for manufacturing an all-solid-state battery according to one embodiment of the present invention.

[0024]

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029]

[0030] 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).

[0031] 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.

[0032] 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.

[0033] 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).

[0034] 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.

[0035] Lithium transition metal oxides include, for example, Li a A 1-b B b D2(0.90≤a≤1, 0≤b≤0.5), Li aHAVE BEEN 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 Mr 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 Mr 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 b HAVE BEEN c G d O2(0.90≤a≤1, 0≤b≤0.9, 0≤c≤0.5, 0.001≤d≤0.1), Li a Ni b Co c Mr 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 bO2(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-f It 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.

[0036] 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 arranged alternately and regularly in the direction, and each atomic layer thereby 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 Mn z 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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-x PS 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).

[0041] 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.

[0042] Alternatively, the sulfide-based solid electrolyte is Li 7-a MaPS 6-c X c It 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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).

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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).

[0060] 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.

[0061] 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).

[0062] 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).

[0063] 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.

[0064] According to embodiments of the present invention, the solid electrolyte layer (300) may include a positive electrode solid electrolyte layer (300a) and a negative electrode solid electrolyte layer (300b). The positive electrode solid electrolyte layer (300a) and the negative electrode solid electrolyte layer (300b) may be laminated to form one solid electrolyte layer (300). The positive electrode solid electrolyte layer (300a) may be in contact with the positive electrode active material layer (120), and the negative electrode solid electrolyte layer (300b) may be in contact with the negative electrode coating layer (220).

[0065] For example, the positive electrode solid electrolyte layer (300a) and the negative electrode solid electrolyte layer (300b) may include solid electrolytes having the same composition. As another example, the positive electrode solid electrolyte layer (300a) and the negative electrode solid electrolyte layer (300b) may include solid electrolytes having different compositions.

[0066] The positive electrode solid electrolyte layer (300a) may have a first width (W1), and the negative electrode solid electrolyte layer (300b) may have a second width (W2). In other words, the width (or width) of the positive electrode solid electrolyte layer (300a) may be smaller than the width (or width) of the negative electrode solid electrolyte layer (300b). The first width (W1) of the positive electrode solid electrolyte layer (300a) may be smaller than the second width (W2) of the negative electrode solid electrolyte layer (300b). Since the first width (W1) of the positive electrode solid electrolyte layer (300a) is smaller than the second width (W2) of the negative electrode solid electrolyte layer (300b), a gasket may be further provided around the periphery of the positive electrode solid electrolyte layer (300a) to compensate for this.

[0067] Referring back to FIG. 1, the cathode layer (100) and the cathode solid electrolyte layer (300b) can constitute a first electrode layer (ETL1). The anode layer (100) and the anode solid electrolyte layer (300a) can constitute a second electrode layer (ETL2).

[0068] The first electrode layer (ETL1) may be identical to the first electrode body. Additionally, the second electrode layer (ETL2) may be identical to the second electrode body.

[0069]

[0070] FIG. 2 is a plan view illustrating an all-solid-state battery manufacturing device according to embodiments of the present invention. Referring to FIG. 2, a monocell (MNC) can be pressed by a pair of press rollers (RL). The monocell (MNC) can be a cell stack.

[0071]

[0072] FIG. 3A is a perspective view illustrating an all-solid-state battery manufacturing device according to one embodiment of the present invention. Referring to FIG. 3A, the all-solid-state battery manufacturing device may include an electrode supply unit (ESU), a conveying unit, and a pressurizing unit. The monocell (MNC) may be conveyed and pressurized in the order of the electrode supply unit (ESU), the conveying unit, and the pressurizing unit. The pressurizing unit may include a first pressurizing roller (PRR1) and a second pressurizing roller (PRR2).

[0073] An electrode supply unit (ESU) may be configured to supply monocells (MNC). The electrode supply unit (ESU) may be a component for transferring the monocells (MNC) to a transport unit. The electrode supply unit (ESU) may transport the monocells (MNC) in a second direction (D2). The electrode supply unit (ESU) may be a conveyor belt for moving the monocells (MNC). Additionally, any means for moving the monocells (MNC) may be used, not limited to a conveyor belt.

[0074] The transport unit can transport the monocell (MNC) in a second direction (D2). The transport unit can include a first gripper (GRP1), a transport belt (TFB), and a guide (GD). The transport unit is a unit for transporting the monocell (MNC), and can also include transporting the monocell (MNC) by the same means as the electrode supply unit (ESU).

[0075] The first gripper (GRP1) may be configured to transport the monocell (MNC) from the electrode supply unit (ESU) to the transport belt (TFB) via the first pressure roller (PRR1) to be described later. The first gripper (GRP1) may be configured to grip the monocell (MNC). Referring to FIG. 3A, a pair of first grippers (GRP1) may be positioned at both ends of the monocell (MNC) with respect to the first direction (D1). The pair of first grippers (GRP1) may grip and fix the monocell (MNC) and then transport it in the second direction (D2). The pair of first grippers (GRP1) may grip and transport the monocell (MNC) one by one.

[0076] The transport belt (TFB) can transport the pressurized monocell (MNC) from the first pressure roller (PRR1) to the second pressure roller (PRR2). The transport belt (TFB) can receive the pressurized monocell (MNC) from the first pressure roller (PRR1) from a pair of first grippers (GRP1) and transport it to the second pressure roller (PRR2). The transport belt (TFB) can be a transport means in the form of an electrode supply unit (ESU). The transport belt (TFB) can be in the form of a conveyor belt as a belt for transporting the monocell (MNC).

[0077] The guide (GD) may be configured to secure the second region (AR2) of the monocell (MNC), which will be described later. The guide (GD) may be positioned in the third direction (D3) of the transport belt (TFB). The guide (GD) may be in the form of a rail or a belt. The guide (GD) may serve to hold a spaced portion of the monocell (MNC). The spaced portion may be a portion corresponding to the second region (AR2), which may be a temporarily unpressurized portion of the monocell (MNC). In addition, the spaced portion may refer to the first side (SD1) and the second side (SD2). In addition, the spaced portion may refer to the fourth region (AR4), which will be described later.

[0078] The first pressure roller (PRR1) may be configured to partially pressurize the monocell (MNC). Partially pressurizing the monocell (MNC) may mean pressurizing the first region (AR1), which is a part of the monocell (MNC). Partially pressurizing the monocell (MNC) may be temporary pressurization performed to fix the electrode body so that it does not move when the monocell (MNC) is transported. The first pressure roller (PRR1) may be configured to press the monocell (MNC) in a third direction (D3). The first pressure roller (PRR1) may be a roller having an irregular diameter.

[0079] The second pressure roller (PRR2) may be configured to pressurize the entire monocell (MNC). Pressurizing the entire monocell (MNC) may mean pressing the entire area of ​​the monocell. The entire area of ​​the monocell (MNC) may be the area that combines the first area (AR1) and the second area (AR2). Pressurizing the entire area of ​​the monocell (MNC) may be performed by a method for pressing an all-solid-state battery. For example, pressing the entire monocell (MNC) may be performed by a roll pressing method.

[0080] The monocell (MNC) can be pressurized twice by a first pressurizing roller (PRR1) and a second pressurizing roller (PRR2). The monocell (MNC) can be temporarily pressurized by the first pressurizing roller (PRR1) and then fully pressurized by the second pressurizing roller (PRR2).

[0081] A monocell (MNC) partially pressurized by a first pressure roller (PRR1) can be transported by a transport belt (TFB). Referring to Fig. 3a, when the monocell (MNC) is transported by the transport belt (TFB), a guide (GD) may serve to press a spaced portion of a second region (AR2). This may be to ensure that the spaced portion is also fully pressurized when the monocell (MNC) is fully pressurized by the second pressure roller (PRR2). In other words, the guide (GD) may serve to hold the spaced portion of the monocell (MNC) pressurized by the first pressure roller (PRR1). The guide (GD) illustrated in Fig. 3a may be a rail-shaped guide (GD). The rail-shaped guide (GD) may be composed of a pair of rails. The rail-shaped and belt-shaped guides (GD) will be described later with reference to Figs. 7a and 7b.

[0082]

[0083] Fig. 3b is a perspective view illustrating an all-solid-state battery manufacturing device according to another embodiment of the present invention. The differences compared to Fig. 3a will be mainly explained. The all-solid-state manufacturing device of Fig. 3b may utilize a rotary movement unit (RTU) as a transport unit. The rotary movement unit (RTU) may transport a monocell (MNC) pressed by a first pressure roller (PRR1) to a second pressure roller (PRR2).

[0084] A rotary motion unit (RTU) may include a plurality of second grippers (GRP2) and a rotating member (RTP) configured to rotate the second grippers (GRP2). The plurality of second grippers (GRP2) may be composed of two or four second grippers (GRP2), but is not limited thereto. FIG. 9 illustrates a case where there are two second grippers (GRP2), and FIG. 10 illustrates a case where there are four second grippers (GRP2), respectively.

[0085]

[0086] FIG. 4A is a plan view of an all-solid-state battery monocell (MNC) according to an embodiment of the present invention. FIG. 4A may be a plan view of a monocell (MNC) pressed by a first press roller (PRR1). Referring to FIG. 4A, the monocell (MNC) may include a first region (AR1) and a second region (AR2). The second region (AR2) may include a first side (SD1) and a second side (SD2). The first region (AR1) may be a central portion of the monocell (MNC). The central portion may refer to the exact center portion of the monocell (MNC) illustrated in FIG. 4A. In addition, the first region (AR1) may not completely coincide with the central portion of the monocell (MNC). When the first region (AR1) is the central portion of the monocell (MNC), the first side (SD1) and the second side (SD2) may have the same area. Additionally, if the first region (AR1) does not completely coincide with the center of the monocell (MNC), the areas of the first side (SD1) and the second side (SD2) may be different from each other.

[0087] The first region (AR1) of the monocell (MNC) may be a region pressed by the first pressure roller (PRR1). The first region (AR1) may be a region partially pressed by the first pressure roller (PRR1). The first region (AR1) may be a region temporarily pressed by the first pressure roller (PRR1).

[0088] The second region (AR2) of the monocell (MNC) may be an area excluding the first region (AR1). The second region (AR2) may include a first side (SD1) and a second side (SD2). The second region (AR2) may be an area that is not partially pressed by the first pressure roller (PRR1). The second region (AR2) may be an area that is not temporarily pressed by the first pressure roller (PRR1).

[0089] FIG. 4B is a front view of an all-solid-state battery monocell (MNC) according to an embodiment of the present invention. FIG. 4B may be a view of the monocell (MNC) of FIG. 4A when viewed in a direction parallel to the second direction (D2). Referring to FIG. 4B, the first side (SD1) and the second side (SD2) of the monocell (MNC), excluding the first region (AR1), may be spaced apart from each other. When the first region (AR1) of the monocell (MNC) is pressed by the first pressure roller (PRR1), the surface of the second region (AR2), excluding the first region (AR1), may be spaced apart from each other. In addition, when the first region (AR1) of the monocell (MNC) is pressed by the first pressure roller (PRR1), the surface of the second region (AR2), excluding the first region (AR1), may be wrinkled.

[0090] Fig. 4c illustrates a plan view of an all-solid-state battery monocell (MNC) according to one embodiment of the present invention. Referring to Fig. 4c, the monocell (MNC) can temporarily pressurize only the first region (AR1) with the first pressure roller (PRR1) and then pressurize both the first region (AR1) and the second region (AR2) with the second pressure roller (PRR2).

[0091]

[0092] Fig. 5 is a perspective view illustrating an all-solid-state battery manufacturing device according to another embodiment of the present invention. Referring to Fig. 5, the pressurizing unit of the all-solid-state battery manufacturing device may include a first pressurizing roller (PRR1), a second pressurizing roller (PRR2), and a third pressurizing roller (PRR3). The pressurizing unit may include a plurality of rollers. For example, the pressurizing unit may further include a fourth pressurizing roller in addition to the first to third pressurizing rollers (PRR1-PRR3), but is not necessarily limited thereto.

[0093] The first pressure roller (PRR1) and the second pressure roller (PRR2) illustrated in FIG. 5 may be the same as or different from the first pressure roller (PRR1) and the second pressure roller (PRR2) illustrated in FIGS. 3a and 3b. Referring to FIG. 5, the monocell (MNC) can be transported to the first pressure roller (PRR1) by a pair of grippers. The first pressure roller (PRR1) can pressurize a part of the monocell (MNC). The first pressure roller (PRR1) can temporarily pressurize a part of the monocell (MNC). Temporarily pressing a part of the monocell (MNC) may be to prevent the electrode body from moving during the transport of the monocell (MNC), as described above. The part temporarily pressed by the first pressure roller (PRR1) may be the third area (AR3) of the monocell (MNC). The portion of the monocell (MNC) excluding the third area (AR3) may be the fourth area (AR4). The third area (AR3) and the fourth area (AR4) combined may be the entire area of ​​the monocell (MNC).

[0094] The third region (AR3) may be a region where the first pressure roller (PRR1) presses the monocell (MNC). The area of ​​the third region may be less than half of the area of ​​the entire region of the monocell (MNC). In addition, the area of ​​the third region (AR3) may be half of the area of ​​the entire region of the monocell (MNC). When the area of ​​the third region (AR3) is half of the area of ​​the entire region of the monocell (MNC), the areas of the third region (AR3) and the fourth region (AR4) may be the same.

[0095] The third pressure roller (PRR3) can pressurize the remaining portion of the monocell (MNC). The third pressure roller (PRR3) can temporarily pressurize the remaining portion of the monocell (MNC). Temporarily pressing the remaining portion of the monocell (MNC) may be to prevent the electrode body from moving during the transport of the monocell (MNC), as described above. The portion temporarily pressed by the third pressure roller (PRR3) may be the fourth region (AR4) of the monocell (MNC).

[0096] The monocell (MNC) can temporarily pressurize the third region (AR3) with the first press roller (PRR1) and then temporarily pressurize the fourth region (AR4) with the third press roller (PRR3). The monocell (MNC) with the third region (AR3) and the fourth region (AR4) temporarily pressurized can be fully pressurized with the second press roller (PRR2). The full pressurization can be performed using the roll pressing method as described above.

[0097]

[0098] FIGS. 6A to 6C are plan views of an all-solid-state battery monocell (MNC) according to another embodiment of the present invention. Referring to FIG. 6A, half of the total area of ​​the monocell (MNC) may be a third area (AR3). Additionally, the third area (AR3) may be smaller than half of the total area of ​​the monocell (MNC). A portion of the monocell (MNC) excluding the third area (AR3) may be a fourth area (AR4). When the third area (AR3) of the monocell (MNC) is smaller than half of the total area, the area of ​​the third area (AR3) may be smaller than the area of ​​the fourth area (AR4). FIG. 6B is a front view showing the appearance of the monocell (MNC) after pressing the third area (AR3) of the monocell (MNC) with the first pressure roller (PRR1). Referring to Fig. 6b, when the third region (AR3) of the monocell (MNC) is temporarily pressed by the first pressure roller (PRR1), the fourth region (AR4) that is not temporarily pressed can be separated. The separated fourth region (AR4) of the monocell (MNC) can be temporarily pressed by the third pressure roller (PRR3). Fig. 6c is a drawing sequentially showing the pressed area when the monocell (MNC) is pressed in the order of the first pressure roller (PRR1), the third pressure roller (PRR3), and the second pressure roller (PRR2).

[0099] FIGS. 7A and 7B are drawings showing a guide (GD) of an all-solid-state battery manufacturing device according to one embodiment of the present invention. Referring to FIG. 7A, the guide (GD) may be composed of a pair of rails. Each of the pair of rails may be a rail including a vent portion (BNP) and a rail portion (RLP). The vent portion (BNP) may have a curved shape. Referring to FIG. 3A, the vent portion (BNP) may have a curved shape in a second direction (D2). The vent portion (BNP) may serve to help the second region (AR2) of the monocell (MNC) to be easily inserted into the guide (GD). The vent portion (BNP) may be located at a portion where the monocell (MNC) and the guide (GD) first come into contact so that the monocell (MNC) can be easily inserted into the guide (GD). The rail portion (RLP) can act to press the spaced portion of the monocell (MNC) so that the entire area of ​​the monocell (MNC) is fully pressed by the second press roller (PRR2).

[0100] Referring to Fig. 7b, the guide (GD) may be in the form of a guide belt as well as a pair of rails as described above. The guide belt may be composed of a first guide belt (GDB1) and a second guide belt (GDB2). The first guide belt (GDB1) may be positioned in the third direction (D3) of the first side (SD1), and the second guide belt (GDB2) may be positioned in the third direction (D3) of the second side (SD2). The guide belt may not include a separate vent part (BNP). The first guide belt (GDB1) and the second guide belt (GDB2) may pressurize the first side (SD1) and the second side (SD2), respectively. The monocell (MNC) whose first side (SD1) and second side (SD2) are pressurized by the first guide belt (GDB1) and the second guide belt (GDB2), respectively, can be finally fully pressurized by the second pressure roller (PRR2). The pressure applied to the first side (SD1) and second side (SD2) by the first guide belt (GDB1) and the second guide belt (GDB2), respectively, may be less than the pressure applied to the first pressure roller (PRR1) or the third pressure roller (PRR3). The pressure applied to the monocell (MNC) by the first guide belt (GDB1) or the second guide belt (GDB2) may be less than the pressure applied to the first pressure roller (PRR1) or the third pressure roller (PRR3) temporarily.

[0101] Figures 8a to 8c illustrate cross-sections of a first pressure roller (PRR1) or a third pressure roller (PRR3) according to embodiments of the present invention. Referring to Figure 8a, Figure 8a illustrates a front view of the first pressure roller (PRR1).

[0102] The first pressure roller (PRR1) may include a first pressure region (PAR1) that comes into contact with the first region (AR1) of the monocell (MNC). The first pressure region (PAR1) may be located at the center of the first pressure roller (PRR1). The first pressure region (PAR1) of the first pressure roller (PRR1) may be a region that temporarily presses the first region (AR1) of the monocell (MNC). The diameter of the first pressure region (PAR1) may be the length of a portion parallel to the third direction (D3) based on FIG. 8A. The diameter of the first pressure region (PAR1) may be larger than the diameter of a portion excluding the first pressure region (PAR1). Since the diameter of the first pressure region (PAR1) is larger than the diameter of a portion excluding the first pressure region, the first pressure region (PAR1) may come into contact with the first region (AR1) of the monocell (MNC). The first pressure area (PAR1) may be half of the total area of ​​the first pressure roller (PRR1). Additionally, the first pressure area (PAR1) may be larger than half of the total area of ​​the first pressure roller (PRR1).

[0103] Referring to FIG. 8b, the first pressure roller (PRR1) illustrated in FIG. 5 may include a third pressure region (PAR3) that comes into contact with the third region (AR3) of the monocell (MNC). The third pressure region (PAR3) may be located in a part of the first pressure roller (PRR1) illustrated in FIG. 5. The third pressure region (PAR3) of the first pressure roller (PRR1) illustrated in FIG. 5 may be an region that temporarily presses the third region (AR3) of the monocell (MNC). The diameter of the third pressure region (PAR3) may be the length of a portion parallel to the third direction (D3) based on FIG. 8b. The diameter of the third pressure region (PAR3) may be larger than the diameter of a portion excluding the third pressure region (PAR3). Since the diameter of the third pressure area (PAR3) is larger than the diameter of the portion of the first pressure roller (PRR1) excluding the third pressure area (PAR3) illustrated in FIG. 5, the third pressure area (PAR3) can be in contact with the third area (AR3) of the monocell (MNC). The third pressure area (PAR3) may be half of the total area of ​​the first pressure roller (PRR1) illustrated in FIG. 5. In addition, the third pressure area (PAR3) may be smaller than half of the total area of ​​the first pressure roller (PRR1) illustrated in FIG. 5.

[0104] Referring to FIG. 8c, the third pressure roller (PRR3) may include a fourth pressure region (PAR4) that comes into contact with the fourth region (AR4) of the monocell (MNC). The fourth pressure region (PAR4) may be located on a part of the third pressure roller (PRR3). The fourth pressure region (PAR4) of the third pressure roller (PRR3) may be an region that temporarily presses the fourth region (AR4) of the monocell (MNC). The diameter of the fourth pressure region (PAR4) may be the length of a portion parallel to the third direction (D3) based on FIG. 8c. The diameter of the fourth pressure region (PAR4) may be larger than the diameter of a portion of the third pressure roller (PRR3) excluding the fourth pressure region (PAR4). Since the diameter of the fourth pressurized area (PAR4) is larger than the diameter of the portion excluding the fourth pressurized area (PAR4), only the fourth pressurized area (PAR4) can come into contact with the fourth area (AR4) of the monocell (MNC). The fourth pressurized area (PAR4) may be half of the total area of ​​the third pressurized roller (PRR3). In addition, the fourth pressurized area (PAR4) may be smaller than half of the total area of ​​the third pressurized roller (PRR3).

[0105] FIG. 9 and FIG. 10 are drawings illustrating a rotary movement unit of an all-solid-state battery manufacturing device according to one embodiment of the present invention. Referring to FIG. 9, the rotary movement unit (RTU) may include second grippers (GRP2) and a rotation unit (RTP). The rotation unit (RTP) may rotate perpendicular to the first direction (D1) to move the monocell (MNC). The rotation unit (RTP) may rotate clockwise with respect to a direction parallel to the movement direction of the monocell (MNC).

[0106] Figure 10 is a drawing showing an embodiment of a rotary motion unit (RTU) having four second grippers (GRP2).

[0107]

[0108] Fig. 11 illustrates a sequence of a method for manufacturing an all-solid-state battery according to an embodiment of the present invention. The all-solid-state battery can be manufactured in the following order: forming a mono-cell (MNC) by stacking a second electrode body on a first electrode body (S100), transporting the mono-cell (MNC) in a first direction (D1) (S110), partially pressing the mono-cell (MNC) with a first pressure roller (PRR1) (S120), and fully pressing the mono-cell (MNC) with a second pressure roller (PRR2) (S130). Transporting the mono-cell (MNC) in the first direction (D1) (S110) can be carried out by a pair of first grippers (GRP1) illustrated in Figs. 3a and 3b. Partially pressurizing the monocell (MNC) with the first pressure roller (PRR1) (S120) can be performed by partially pressing the monocell (MNC) with the first pressure roller (PRR1) illustrated in FIGS. 3a and 3b. Fully pressurizing the monocell (MNC) with the second pressure roller (PRR2) (S130) can be performed by fully pressing the monocell (MNC) with the second pressure roller (PRR2) illustrated in FIGS. 3a and 3b.

[0109] Fig. 12 illustrates a sequence of a method for manufacturing an all-solid-state battery according to another embodiment of the present invention. The all-solid-state battery can be manufactured in the following order: forming a mono-cell (MNC) by stacking a second electrode body on a first electrode body (S200), transporting the mono-cell (MNC) in a second direction (D2) (S210), temporarily pressing a portion of the mono-cell (MNC) with a first pressure roller (PRR1) (S220), temporarily pressing the remaining portion of the mono-cell (MNC) with a third pressure roller (PRR3) (S230), and pressing the entire mono-cell (MNC) with a second pressure roller (PRR2) (S240). Transporting the mono-cell (MNC) in the second direction (D2) (S210) can be carried out by the first gripper (GRP1) illustrated in Fig. 5. Temporarily pressurizing a part of the monocell (MNC) with the first pressure roller (PRR1) (S220) can temporarily pressurize the third region (AR3) of the monocell (MNC) with the first pressure roller (PRR1) illustrated in FIG. 5. Temporarily pressurizing the remaining part of the monocell (MNC) with the third pressure roller (PRR3) (S230) can temporarily pressurize the fourth region (AR4) of the monocell (MNC) with the third pressure roller (PRR3) illustrated in FIG. 5. Pressurizing the entire monocell (MNC) with the second pressure roller (PRR2) (S240) can pressurize the entire region of the monocell (MNC) with the second pressure roller (PRR2) illustrated in FIG. 5.

[0110] In forming a monocell (MNC) by laminating a second electrode body on a first electrode body (S100, S200), the first electrode body may include a cathode layer (200) and a cathode solid electrolyte layer (300b). In addition, the second electrode body may include a cathode layer (100) and a cathode solid electrolyte layer (300a), but is not necessarily limited thereto.

[0111]

[0112] The method for manufacturing an all-solid-state battery according to the present invention can simplify the all-solid-state battery manufacturing process by performing a process of temporarily pressurizing a portion of a cell stack using a first press roller (PRR1) or a third press roller (PRR3). In particular, since a continuous process can be implemented by transporting monocells (MNC), the process time can be shortened.

[0113] Additionally, the all-solid-state battery manufacturing device according to an embodiment of the present invention can manufacture an all-solid-state battery through a series of processes for pressurizing a mono-cell (MNC) without a separate alignment process. This allows the manufacturing process of the all-solid-state battery to be performed efficiently.

[0114]

[0115] While embodiments of the present invention have been described with reference to the attached drawings, the present invention may be implemented in other specific forms without altering the technical spirit or essential features thereof. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

Claims

1. An electrode supply unit configured to supply a monocell; A transport unit that transports the monocell in the second direction; and Including a pressurizing unit configured to pressurize the monocell being transported, The above pressurizing unit includes: a first pressurizing roller and a second pressurizing roller spaced apart in the second direction; The above first pressure roller is configured to partially pressurize the monocell, An all-solid-state battery manufacturing device, wherein the second pressure roller is configured to pressurize the entire monocell.

2. In paragraph 1, The above monocell includes a first region that is partially pressurized and a second region that is another region, The above transport unit: A pair of first grippers configured to transport the monocell from the electrode supply unit to the transport belt via the first pressure roller; The transport belt configured to transport the monocell pressed by the first pressure roller to the second pressure roller; and An all-solid-state battery manufacturing device, comprising a guide configured to fix the second region of the monocell pressed by the first pressurizing roller.

3. In paragraph 2, The above first region is the central part of the monocell, An all-solid-state battery manufacturing device, wherein the above partial pressurization is temporary pressurization for fixing the monocell.

4. In paragraph 2, The second region includes a first side and a second side, The above guide is composed of a pair of rails crossing the first side and the second side of the monocell, An all-solid-state battery manufacturing device, wherein each of the pair of rails includes a bent portion having a curved shape.

5. In paragraph 2, An all-solid-state battery manufacturing device, wherein the guide includes a guide belt configured to pressurize the first side and the second side of the monocell.

6. In paragraph 1, The above transport unit: A pair of first grippers configured to transport the monocell from the electrode supply unit to the transport belt via the first pressure roller; and A rotary moving unit configured to transfer the monocell pressed by the first pressure roller to the second pressure roller, An all-solid-state battery manufacturing device, wherein the rotary moving unit includes a plurality of second grippers for holding the monocell, and a rotating part configured to rotate the second grippers.

7. In paragraph 1, The above transport unit includes a pair of first grippers for transporting the monocell in a second direction, The above pressurizing unit further includes a third pressurizing roller between the first pressurizing roller and the second pressurizing roller, The above first pressure roller is configured to temporarily pressurize a portion of the monocell, An all-solid-state battery manufacturing device, wherein the third pressure roller is configured to temporarily pressurize the remaining portion of the monocell.

8. In paragraph 7, The above part of the above monocell is the third region of the above monocell, The remaining portion of the above monocell is the fourth region of the above monocell, An all-solid-state battery manufacturing device, wherein the area of ​​the third region is less than half of the area of ​​the entire region of the monocell.

9. In paragraph 2, The first pressure roller includes a first pressure region that directly contacts the first region of the monocell, An all-solid-state battery manufacturing device, wherein the diameter of the first pressurized region is larger than the diameter of a portion excluding the first pressurized region.

10. In paragraph 8, The first pressure roller includes a third pressure region that directly contacts the third region of the monocell, The third pressure roller includes a fourth pressure region that directly contacts the fourth region of the monocell, The diameter of the third pressurized area is larger than the diameter of the portion excluding the third pressurized area, An all-solid-state battery manufacturing device, wherein the diameter of the fourth pressurized region is larger than the diameter of a portion excluding the fourth pressurized region.

11. In paragraph 1, The above monocell is composed of a first electrode body and a second electrode body, The first electrode body includes a cathode layer and a cathode solid electrolyte layer, An all-solid-state battery manufacturing device, wherein the second electrode body includes a cathode layer and a cathode solid electrolyte layer.

12. Forming a monocell by laminating a second electrode body on a first electrode body; Transporting the monocell in the second direction; and Including pressing the monocell transferred in the second direction with a plurality of pressurizing rollers, Pressurizing the above monocell: Partially pressurizing the monocell with a first pressure roller; and A method for manufacturing an all-solid-state battery, comprising pressurizing the monocell entirely with a second pressurizing roller after the partial pressurizing process.

13. In paragraph 12, The above monocell includes a first region that is partially pressurized and a second region that is another region, Transporting the above monocell in the second direction: Transferring the monocell to the first pressure roller using a pair of first grippers; Transferring the monocell pressed from the first pressure roller to the second pressure roller by a transfer belt; and A method for manufacturing an all-solid-state battery, comprising fixing the second region of the monocell pressed by the first pressurizing roller as a guide.

14. In paragraph 13, The above first region is the central part of the monocell, A method for manufacturing an all-solid-state battery, wherein the above partial pressurization is temporary pressurization for fixing the monocell.

15. In paragraph 13, The second region includes a first side and a second side, A method for manufacturing an all-solid-state battery, wherein fixing the second region comprises fixing the first side and the second side of the monocell with a pair of rails, respectively.

16. In paragraph 13, The second region includes a first side and a second side, A method for manufacturing an all-solid-state battery, wherein fixing the second region includes fixing the first side and the second side with a guide belt that pressurizes the first side and the second side.

17. In paragraph 13, Transporting the above monocell in the second direction: Transferring the monocell to the first pressure roller with the pair of first grippers; and It includes transporting the monocell pressed by the first pressurizing roller to the second pressurizing roller by means of a rotary moving unit, A method for manufacturing an all-solid-state battery, wherein the rotary moving unit comprises a plurality of second grippers that hold the monocell and a rotating unit that rotates the second grippers to transfer the monocell from the first pressure roller to the second pressure roller.

18. In paragraph 12, The above plurality of pressure rollers further include a third pressure roller between the first pressure roller and the second pressure roller, Pressurizing the above monocell: Temporarily pressurizing a portion of the monocell with the first pressurizing roller; and A method for manufacturing an all-solid-state battery, comprising temporarily pressurizing the remaining portion of the monocell with the third pressurizing roller.

19. In paragraph 18, The above part of the above monocell is the third region of the above monocell, The remaining portion of the above monocell is the fourth region of the above monocell, A method for manufacturing an all-solid-state battery, wherein the area of ​​the third region is less than half of the area of ​​the entire region of the monocell.

20. In paragraph 12, The first electrode body includes a cathode layer and a cathode solid electrolyte layer, A method for manufacturing an all-solid-state battery, wherein the second electrode body includes a cathode layer and a cathode solid electrolyte layer.

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