Stacking apparatus and method for manufacturing all-solid-state battery using same

Abstract

The present invention relates to a stacking apparatus and a method for manufacturing an all-solid-state battery using same. More specifically, the stacking apparatus comprises: a main body; and a clamp unit arranged on the main body, wherein the clamp unit includes: a first clamp unit that comprises a first fixing part and a first vertical driving part configured to move the first fixing part vertically; and a second clamp unit that comprises a second fixing part and a second vertical driving part configured to move the second fixing part vertically. The first clamp unit and the second clamp unit are spaced apart from each other in a first direction, the first fixing part of the first clamp unit is configured to hold the upper surface of a first member, the second fixing part of the second clamp unit is configured to hold the upper surface of a second member, and the upper surfaces of the first member and the second member are configured to be positioned at different heights.

Description

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

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

[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 a stacking device for an all-solid-state secondary battery having a novel structure.

[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-mentioned stacking device.

[0008]

[0009] According to one embodiment of the present invention, a stacking device is provided, comprising: a main body; and a clamp unit disposed on the main body, wherein the clamp unit comprises: a first clamp unit including a first fixing unit and a first vertical driving unit configured to vertically move the first fixing unit; and a second clamp unit including a second fixing unit and a second vertical driving unit configured to vertically move the second fixing unit, wherein the first clamp unit and the second clamp unit are spaced apart from each other in a first direction, the first fixing unit of the first clamp unit is configured to grip an upper surface of a first member, the second fixing unit of the second clamp unit is configured to grip an upper surface of a second member, and the upper surface of the first member and the upper surface of the second member are positioned at different heights.

[0010] In another embodiment of the present invention, a method for manufacturing an all-solid-state battery using a stacking device including a first clamp unit and a second clamp unit is provided, the method comprising: preparing a stack in which a first member and a second member are arranged on an outer surface of one side of the first member; fixing the second member with the first clamp unit; arranging a third member on the first member, the second member surrounding the third member, the height of the third member being higher than the height of the second member; and fixing the third member with the second clamp unit.

[0011]

[0012] The stacking device according to the present invention can secure objects having different heights during the stacking process. Consequently, the stacking precision of an all-solid-state battery can be improved.

[0013]

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

[0015] FIG. 2 is a perspective view illustrating an all-solid-state battery according to embodiments of the present invention.

[0016] FIG. 3 is a perspective view illustrating a stacking device according to one embodiment of the present invention.

[0017] Figure 4 is a front view illustrating a stacking device according to one embodiment of the present invention.

[0018] FIG. 5 is a plan view illustrating a stacking device according to one embodiment of the present invention.

[0019] Figure 6 is a front view illustrating a stacking device according to another embodiment of the present invention.

[0020] FIG. 7 is a plan view illustrating a stacking device according to another embodiment of the present invention.

[0021] FIG. 8 is a perspective view illustrating a stacking device according to another embodiment of the present invention.

[0022] Figure 9 is a front view illustrating a stacking device according to another embodiment of the present invention.

[0023] FIG. 10 is a plan view illustrating a stacking device according to another embodiment of the present invention.

[0024] Fig. 11 is a perspective view illustrating a stacking device according to another embodiment of the present invention.

[0025] Fig. 12 is a front view illustrating a stacking device according to another embodiment of the present invention.

[0026] Fig. 13 is a plan view illustrating a stacking device according to another embodiment of the present invention.

[0027] Fig. 14 is a perspective view illustrating a stacking device according to another embodiment of the present invention.

[0028] Fig. 15 is a front view illustrating a stacking device according to another embodiment of the present invention.

[0029] Fig. 16 is a cross-sectional view taken along line CC' of Fig. 14.

[0030] Fig. 17 is a perspective view illustrating a stacking device according to another embodiment of the present invention.

[0031] Figures 18, 20, 22, 24, 26 and 28 are plan views illustrating a method for manufacturing an all-solid-state battery.

[0032] Figures 19a and 19b are cross-sectional views taken along lines A-A' and B-B' of Figure 18, respectively.

[0033] Figures 21a and 21b are cross-sectional views taken along lines A-A' and B-B' of Figure 20, respectively.

[0034] Figures 23a and 23b are cross-sectional views taken along lines A-A' and B-B' of Figure 22, respectively.

[0035] Figures 25a and 25b are cross-sectional views taken along lines A-A' and B-B' of Figure 24, respectively.

[0036] Figures 27a and 27b are cross-sectional views taken along lines A-A' and B-B' of Figure 26, respectively.

[0037] Figures 29a and 29b are cross-sectional views taken along lines A-A' and B-B' of Figure 28, respectively.

[0038]

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] When a component is said to be “connected” to another component in this specification, this includes not only cases where it is “directly connected,” but also cases where it is “connected with another component in between.”

[0044] In this specification, the meaning of B being located on A means that B is located in direct contact with A or that B is located on A with another layer located in between, and is not limited to being interpreted as B being located in contact with the surface of A.

[0045] In this specification, unless otherwise specified, the upper side in a superior-subordinate relationship refers to the third direction (D3). For example, the upper surface of a member may refer to a side facing the third direction (D3), and the lower surface may refer to a side opposite to the side.

[0046] FIG. 1 and FIG. 2 are cross-sectional views illustrating an all-solid-state battery according to embodiments of the present invention. Referring to FIG. 1 and FIG. 2, the all-solid-state battery may include a first member (20), a third member (30) disposed on the first member (20), and a multilayer member (40) disposed on one side of the third member (30), and the multilayer member (40) may include a second member (41) and a fourth member (42). The all-solid-state battery may further include a fifth member (50) disposed on the third member (30).

[0047] The first member (20) may include a first electrode (21) and a solid electrolyte (22). The first electrode (21) may be a positive electrode or a negative electrode. In one embodiment, the first electrode (21) may be a negative electrode. The negative electrode may include a negative electrode current collector and a negative electrode coating layer on the negative electrode current collector. The negative electrode current collector may provide a reference surface on which the negative electrode coating layer is disposed. The negative electrode current collector 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 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 may be 1 μm to 20 μm, more specifically, 5 μm to 15 μm, and more specifically, 7 μm to 10 μm.

[0048] The negative electrode current collector 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 may have, for example, a plate or foil shape. Meanwhile, in one embodiment, the negative electrode current collector may be omitted.

[0049] The cathode coating layer can enable lithium metal to grow between the cathode current collector and the lithium metal during charging of an all-solid-state battery. The cathode coating layer can act as a protective layer for the lithium metal and simultaneously suppress the precipitation and growth of lithium dendrites.

[0050] The cathode coating layer may include a metal and carbon. For example, the cathode coating layer 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 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 may include a mixture of carbon black and silver (Ag).

[0051] The cathode coating layer may further include additives other than metal and carbon. For example, the cathode coating layer may further include at least one additive selected from the group consisting of a binder, a filler, a coating agent, a dispersant, and an ion-conducting aid.

[0052] The negative electrode coating layer may have a thickness smaller than that of the positive electrode active material layer. The thickness of the negative electrode coating layer 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. The thickness of the negative electrode coating layer may be, for example, 1 μm to 20 μm, 2 μm to 10 μm, or 3 μm to 7 μm. If the thickness of the negative electrode coating layer is too thin, lithium dendrites formed between the negative electrode coating layer and the negative electrode current collector may collapse the negative electrode coating layer, thereby deteriorating the cycle characteristics of the all-solid-state battery. If the thickness of the negative electrode coating layer is excessively increased, the energy density of the all-solid-state battery may decrease and the internal resistance of the all-solid-state battery due to the negative electrode coating layer may increase, thereby deteriorating the cycle characteristics of the all-solid-state battery. Meanwhile, although not illustrated, a carbon layer may be further included to improve adhesion between the negative electrode coating layer and the solid electrolyte (22).

[0053] The solid electrolyte (22) is disposed between the positive and negative electrodes and may include a sulfide-based solid electrolyte having excellent lithium ion conductivity characteristics. The solid electrolyte (22) 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, sulfur (S), phosphorus (P), and lithium (Li) as at least 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 containing Li2S-P2S5 to form a solid electrolyte, the mixing molar ratio of Li2S and P2S5 is, for example, in the range of Li2S:P2S5=50:50 to 90:10.

[0054] 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(0≤x≤2) may be an argyrodite-type compound including at least one selected from. In particular, the sulfide-based solid electrolyte may be an argyrodite-type compound including at least one selected from Li6PS5Cl, Li6PS5Br, and Li6PS5I. The density of the argyrodite-type solid electrolyte may be 1.5 g / cc to 2.0 g / cc. 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 is, for example, 15 GPa to 35 GPa.

[0055] The solid electrolyte (22) may further include a binder. The binder in the solid electrolyte layer (22) may be, for example, styrene butadiene rubber (SBR), polytetrafluoroethylene, polyvinylidene fluoride, polyethylene, etc., but is not limited thereto. The binder of the solid electrolyte (22) may be the same as or different from the binder included in the positive electrode active material layer or the binder included in the negative electrode coating layer.

[0056] The third member (30) may include a second electrode. When the first electrode (21) is an anode, the second electrode may be an anode. When the first electrode (21) is an anode, the second electrode may be an anode. In one embodiment, the second electrode may be an anode. The anode may include a cathode current collector and a cathode active material layer disposed on the cathode current collector. For example, the cathode may have a form in which cathode active material layers are respectively coated on both surfaces of the cathode current collector.

[0057] The positive electrode active material layer may include a positive electrode active material, a solid electrolyte, a conductive material, and a binder.

[0058] The positive electrode current collector can provide a reference surface on which the positive electrode active material layer is disposed. The positive electrode current collector can have a plate or foil shape. For example, the positive electrode current collector 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.

[0059] In one embodiment of the present invention, the positive electrode current collector 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 and the positive electrode active material layer to enhance the bonding strength between the positive electrode current collector and the positive electrode active material layer.

[0060] 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.

[0061] 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 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 b O2(0.90≤a≤1, 0.001≤b≤0.1), Li aMn2GbO4(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.

[0062] 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, 전고체 전지(10)의 에너지 밀도가 커지고 열안정성이 향상될 수 있다.

[0063] 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.

[0064] When the positive electrode active material includes nickel (Ni) as a ternary lithium transition metal oxide such as NCA or NCM, for example, the capacity density of the all-solid-state battery can be increased, which can reduce metal dissolution of the positive electrode active material in a charged state. As a result, the cycle characteristics of the all-solid-state battery in a charged state can be improved. Meanwhile, the “cycle characteristics” are characteristics indicating the degree to which the all-solid-state battery is deteriorated due to charge / discharge of the all-solid-state battery. An all-solid-state battery (10) with high cycle characteristics can have a small degree of deterioration due to charge / discharge, and an all-solid-state battery with low cycle characteristics can have a large degree of deterioration due to charge / discharge.

[0065] 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.

[0066] 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).

[0067] 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(0≤x≤2) may be an argyrodite-type compound including at least one selected from. In particular, the sulfide-based solid electrolyte may be an argyrodite-type compound including at least one selected from Li6PS5Cl, Li6PS5Br, and Li6PS5I. The density of the argyrodite-type solid electrolyte may be 1.5 g / cc to 2.0 g / cc. 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.

[0068] The solid electrolyte included in the positive electrode active material layer may have a median particle size (D50) smaller than the solid electrolyte included in the solid electrolyte layer (22). For example, the median particle size (D50) of the solid electrolyte included in the positive electrode active material layer 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 (22). Meanwhile, the median particle size (D50) may be a median diameter measured using a laser particle size distribution meter.

[0069] The positive electrode active material layer may include a conductive material. The conductive material may have conductivity without causing chemical changes in the all-solid-state battery (10), thereby increasing the conductivity of the positive electrode active material and the solid electrolyte. The conductive material may include a carbon-based material. The conductive material may include, for example, one or more selected from graphite, carbon black, acetylene black, carbon nanofibers, and carbon nanotubes.

[0070] The positive electrode active material layer 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, and improving bonding strength with the positive electrode current collector. For example, the binder may include polyvinylidene fluoride, styrene butadiene rubber (SBR), polytetrafluoroethylene, polyvinylidene fluoride, vinylidene fluoride / hexafluoropropylene copolymer, polyacrylonitrile, or polymethyl methacrylate.

[0071] 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 may include 85 parts by weight to 92 parts by weight of the positive electrode active material. The positive electrode active material layer may include 0.5 parts by weight to 1.5 parts by weight of the binder.

[0072] Within the positive electrode active material layer, 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 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, preventing a coating layer covering the surface of the solid electrolyte from being properly formed.

[0073] According to embodiments, the positive electrode active material layer may further include at least one additive selected from the group consisting of a filler, a coating agent, a dispersant, and an ion conductive additive, in addition to the above-described positive electrode active material, a solid electrolyte, a conductive agent, and a binder.

[0074] The multilayer member (40) may be an inactive member. By including an inactive member, the solid electrolyte (22) of the all-solid-state battery is prevented from cracking during manufacture and / or charging and discharging, and as a result, the cycle characteristics of the all-solid-state battery are improved. In an all-solid-state battery that does not include an inactive member, cracks may occur in the solid electrolyte (22) in contact with the positive electrode layer during manufacture and / or charging and discharging of the all-solid-state battery, which increases the possibility of a short circuit occurring.

[0075] The inert member may include at least one selected from a lithium ion insulator and a lithium ion conductor. The inert member may be an electronic insulator. That is, the inert member may not be an electronic conductor. The inert member may be an ionic insulator. That is, the inert member may not be an ionic conductor. The inert member may include, for example, an organic material, an inorganic material, or an organic-inorganic composite material. The organic material may be, for example, a polymer. The inorganic material may be, for example, a ceramic such as a metal oxide. The organic-inorganic composite material may be a composite of a polymer and a metal oxide.

[0076] The above-mentioned inert member may be a member that does not contain an electrochemically active material, for example, an electrode active material. An electrode active material is a material that absorbs / releases lithium. The inert member is a member made of a material other than an electrode active material and used in the relevant technical field.

[0077] The multilayer member (40) may include a multilayer structure. For example, the multilayer member (40) may include a second member (41) and a fourth member (42). Although not shown in the drawing, the second member (41) and the fourth member (42) may include an adhesive layer and a support layer. In this case, the solid-state battery prevents cracking of the solid electrolyte (22) during manufacturing and / or charging / discharging, and as a result, the cycle characteristics of the solid-state battery are further improved. The multilayer member (40) can more effectively prevent deterioration of the solid-state battery by simultaneously providing support and adhesive force to the positive electrode layer and the solid electrolyte (22) compared to a single-layer structure.

[0078] The adhesive layer includes, for example, an organic material, and the support layer includes, for example, at least one selected from an organic material and an inorganic material. The adhesive layer may include, for example, a curable polymer. The curable polymer is a polymer that is cured by heat and / or pressure. The curable polymer is, for example, a solid at room temperature. The adhesive layer includes, for example, a heat-pressure curable film and / or a cured product thereof. The heat-pressure curable film is, for example, TSA-66 from Toray. The support layer may include, for example, at least one selected from paper, an insulating polymer, an ion-conducting polymer, an insulating inorganic material, an oxide-based solid electrolyte, and a sulfide-based solid electrolyte. The insulating polymer may be, for example, an olefin-based polymer such as polypropylene (PP) or polyethylene (PE).

[0079] The multilayer member (40) may include one or more multilayer structures. Although only two multilayer structures (41, 42) are illustrated in FIGS. 1 and 2, this is exemplary, and the number of the multilayer structures may be, for example, 1 to 100, 1 to 50, 1 to 40, 1 to 30, 1 to 20, or 1 to 10. As the number of multilayer structures included in the multilayer member (40) increases, the film strength of the multilayer member increases, thereby more effectively preventing unevenness of pressure applied to the solid electrolyte (22) during the pressurization process or the charge / discharge process.

[0080] The thickness of the multilayer member (40) may be equal to or less than the thickness of the third member (30). When the thickness of the multilayer member (40) is equal to or less than the thickness of the third member (30), the third member (30) and the solid electrolyte (22) are sufficiently in close contact, thereby reducing the interfacial resistance between the third member (30) and the solid electrolyte (22).

[0081] The thickness of the multilayer member (40) may be substantially the same as the thickness of the third member (30). When the thickness of the multilayer member (40) is substantially the same as the thickness of the third member (30), cracking of the solid electrolyte (22) is suppressed by applying uniform pressure to the solid electrolyte (22) during the manufacturing process and / or the charging / discharging process of the all-solid-state battery, thereby preventing a short circuit of the all-solid-state battery. In the present specification, the fact that two thicknesses are substantially the same means that the difference between the two thicknesses is 10% or less, 5% or less, or 3% or less. For example, the thickness of the multilayer member (40) may be 0.9 times, 0.95 times, 0.97 times, or 1.0 times, and may be 1.1 times, 1.05 times, or 1.03 times, the thickness of the third member (30).

[0082] The multilayer member (40) may be, for example, a gasket. By using a gasket as the multilayer member (40), cracks in the solid electrolyte (22) that occur due to a pressure difference during the pressing process can be effectively suppressed. The multilayer member (40) is, for example, a multilayer gasket.

[0083] The fifth member (50) may include a third electrode and a solid electrolyte, although not illustrated. The third electrode may be substantially the same electrode as the first electrode (21). The third electrode may be an anode or a cathode. The third electrode may be a cathode. In the present specification, the two electrodes being substantially the same means that both electrodes are anodes or both electrodes are cathodes. For example, both the third electrode and the first electrode may be anodes. Both the third electrode and the first electrode may be cathodes.

[0084] According to one embodiment of the present invention, the first member may include a cathode, the third member may include an anode, the fifth member may include a cathode, and the second member and the fourth member may include inert members.

[0085] In this case, the width of the inert member extending from one side of the positive electrode to the end of the solid electrolyte may be 1 to 30%, 1 to 25%, 1 to 20%, 1 to 15%, 1 to 10%, or 1 to 5% of the width of the positive electrode. If the width of the inert member is excessively large, the energy density of the all-solid-state battery is reduced. If the width of the inert member is excessively small, the effect of arranging the inert member is minimal.

[0086] The area of ​​the anode is smaller than the area of ​​the solid electrolyte in contact with the anode, and an inert member is arranged to surround the side of the anode to compensate for the area difference between the anode and the solid electrolyte. Since the area of ​​the inert member compensates for the difference between the area of ​​the anode and the area of ​​the solid electrolyte, cracks in the solid electrolyte layer caused by the pressure difference during the pressing process can be effectively suppressed. For example, the sum of the area of ​​the anode and the area of ​​the inert member is equal to the area of ​​the solid electrolyte.

[0087] The area of ​​the positive electrode may be less than 100%, less than or equal to 99%, less than or equal to 98%, less than or equal to 97%, less than or equal to 96%, less than or equal to 85%, or less than or equal to 93% of the area of ​​the solid electrolyte. For example, the area of ​​the positive electrode may be between 50% and less than 100%, between 50% and 99%, between 55% and 98%, between 60% and 97%, between 70% and 96%, between 80% and 95%, or between 85% and 95% of the area of ​​the solid electrolyte.

[0088] If the area of ​​the positive electrode is equal to or greater than that of the solid electrolyte, the possibility of a short circuit occurring due to physical contact between the positive and negative electrode coating layers or overcharging of lithium increases. The area of ​​the positive electrode is equal to the area of ​​the positive electrode active material layer, for example. The area of ​​the positive electrode is equal to the area of ​​the positive electrode current collector, for example.

[0089] The area of ​​the inert member may be 50% or less, 40% or less, 30% or less, 20% or less, or 10% or less of the area of ​​the anode. For example, the area of ​​the inert member may be 1% to 50%, 5% to 40%, 5% to 30%, 5% to 20%, or 5% to 15% of the area of ​​the anode.

[0090] The area of ​​the positive electrode may be smaller than the area of ​​the negative electrode current collector. For example, the area of ​​the positive electrode may be less than 99%, 98%, 97%, 96%, 85%, or 93% of the area of ​​the negative electrode current collector. For example, the area of ​​the positive electrode may be from 50% to less than 100%, from 50% to 99%, from 55% to 98%, from 60% to 97%, from 70% to 96%, from 80% to 95%, or from 85% to 95% of the area of ​​the negative electrode current collector. The area of ​​the negative electrode current collector is, for example, the same as the area of ​​the negative electrode layer. The area of ​​the negative electrode current collector is, for example, the same as the area of ​​the negative electrode coating layer.

[0091] FIG. 3 is a perspective view illustrating a stacking device of an all-solid-state battery according to embodiments of the present invention.

[0092] Referring to FIG. 3, the stacking device may include a stage (1000), a main body (100), a first clamp unit (200), and a second clamp unit (400). Components of the all-solid-state battery may be stacked in the working area (2000) of the stage (1000).

[0093] Meanwhile, although not shown, the stage (1000) may include a means for moving the materials stacked on the work area (2000) in the process progress direction. The process progress direction may be the first direction (D1), but is not necessarily limited thereto.

[0094] Referring to FIG. 3, the main body (100) can be placed on a stage (1000).

[0095] The main body (100) may be configured to move in the direction of the substrate. Referring to FIG. 3, the substrate direction may be a second direction (D2) intersecting the first direction (D1). Specifically, the main body (100) may be configured to move back and forth in the second direction (D2). The lower surface of the main body (100) and the stage (1000) may include a pair of guide rails and a guide block coupled to be connected to the guide rails. Since the guide rails and the guide block are configured by applying a mechanical element commonly referred to as an LM guide, a description of the specific structure will be omitted. However, the means for moving the main body (100) back and forth in the second direction (D2) is not necessarily limited to the LM guide. For example, the main body (100) may include a driving device using electricity, hydraulics, compressed air, etc. Meanwhile, although not illustrated, the main body (100) may further include an actuator. The second direction (D2) forward or backward movement of the main body (100) can be used to adjust the position of the clamp unit (200, 400) to fix the material stacked in the work area (2000).

[0096] Meanwhile, although not shown, the main body (100) may further include a means for moving in the process progress direction. The process progress direction may be the first direction (D1), but is not necessarily limited thereto.

[0097] Referring to FIG. 3, the clamp units (200, 400) may be arranged on the main body (100). The clamp units (200, 400) may include a first clamp unit (200) and a second clamp unit (400). The first clamp unit (200) and the second clamp unit (400) may be spaced apart from each other in a first direction (D1). The first clamp unit (200) and the second clamp unit (400) may be configured to grip different portions of the stacked members. Specifically, the first fixing portion of the first clamp unit may be configured to grip the upper surface of the first member, and the second fixing portion of the second clamp unit may be configured to grip the upper surface of the second member. The first clamp unit (200) and the second clamp unit (400) may be configured to grip members that are stacked at different heights, respectively. The first clamp unit (200) and the second clamp unit (400) may be configured to grip different members having different heights, respectively. Specifically, the upper surface of the first member and the upper surface of the second member may be positioned at different heights.

[0098] Referring to FIG. 3, the first clamp unit (200) may include a first fixing member (220) and a first vertical driving member (210) configured to vertically move the first fixing member (220). The second clamp unit (400) may include a second fixing member (420) and a second vertical driving member (410) configured to vertically move the second fixing member (420).

[0099] The first and second vertical driving units (210, 410) may be configured to move up and down in the third direction (D3). The first and second vertical driving units (210, 410) may include a driving device that is arranged between the first and second fixing units (220, 420) and the main body (100) and performs linear movement. Since the driving device is configured by applying a mechanical element called a cylinder, a description of the specific structure is omitted. However, the present invention is not limited thereto, and if the configuration can adjust the height of the first and second fixing units (220, 420), it may be included in the first and second vertical driving units (210, 410).

[0100] Referring to FIG. 4, the first and second vertical driving units (210, 410) can be controlled independently of each other. The first and second vertical driving units (210, 410) can be configured so that the first fixing unit (220) and the second fixing unit (420) can be positioned at the same height, respectively. The first and second vertical driving units (210, 410) can be configured so that the first fixing unit (220) and the second fixing unit (420) can be positioned at different heights, respectively. Although FIG. 4 illustrates that the height of the first fixing unit (220) is higher than the height of the second fixing unit (420), the height of the second fixing unit (420) may be higher than the height of the first fixing unit (220). In this case, the first fixing part (220) and the second fixing part (420) can each grip members that are stacked at different heights. The first fixing part (220) and the second fixing part (420) can each grip different members that have different heights. For example, the first fixing part (220) of the first clamp unit (200) can be configured to grip the upper surface of the first member, and the second fixing part (420) of the second clamp unit (400) can be configured to grip the upper surface of the second member.

[0101] Referring to FIG. 3, the first fixing part (220) may include a first connecting part (221) and a first fixing means (222). The second fixing part (420) may include a second connecting part (421) and a second fixing means (422).

[0102] The first connecting portion (221) can connect the first vertical driving portion (210) and the first fixing means (222). The first connecting portion (221) can be detachably coupled to the first fixing means (222). In this case, if the first fixing means (222) is damaged, worn, or has a problem, the problem can be solved by replacing only the first fixing means (222) without replacing the entire stacking device, making it easy to maintain the stacking device.

[0103] The description of the technical features described above with respect to the first connecting portion (221) can also be applied to the second connecting portion (421), so redundant descriptions are omitted.

[0104] The first fixing means (222) and the second fixing means (422) may be configured to hold one side of the member of the all-solid-state battery. The first fixing means (222) and the second fixing means (422) may include a configuration for fixing one side of the member of the all-solid-state battery by mechanical compression and vacuum suction, but are not necessarily limited thereto.

[0105] Referring to FIG. 5 as an embodiment of the present invention, the first fixing part (220) and the second fixing part (420) may have substantially the same length in the substrate direction. In the present specification, two lengths being substantially the same means that the difference between the two lengths is 10% or less, 5% or less, or 3% or less. For example, the length of the first fixing part (220) in the substrate direction may be 0.9 times, 0.95 times, 0.97 times, or 1.0 times, or 1.1 times, 1.05 times, or 1.03 times, the length of the second fixing part (420) in the substrate direction.

[0106] Referring to FIG. 6 as another embodiment of the present invention, the first fixing part (220) and the second fixing part (420) may have different lengths in the substrate direction (see FIG. 6). Referring to FIG. 7, when the first fixing part (220) and the second fixing part (420) have different lengths, the first fixing part (220) and the second fixing part (420) may each fix members with different heights.

[0107] Referring to FIGS. 8 to 10 as another embodiment of the present invention, the first clamp unit (200) may further include a first horizontal driving unit (223) configured to move in the direction of the substrate. Specifically, the first fixing unit (220) may further include a first horizontal driving unit (223).

[0108] The first horizontal driving unit (223) may be configured to move the first fixing means (222) back and forth in the second direction (D2). The first horizontal driving unit (223) may include a driving device that is arranged between the first connecting part (221) and the first fixing means (222) and performs linear movement. Since the driving device is configured by applying a mechanical element called a cylinder, a description of the specific structure is omitted. However, the present invention is not limited thereto, and any configuration capable of controlling the displacement of the first fixing means (222) in the substrate direction may be included in the first horizontal driving unit (223).

[0109] The first horizontal driving unit (223) may be configured such that the displacement (d1) of the first fixing unit (220) in the substrate direction is greater than the displacement (d2) of the second fixing unit in the substrate direction. The first horizontal driving unit (223) may be arranged between the first connecting unit (221) and the first fixing means (222), such that the displacement of the first fixing means (222) in the substrate direction is greater than the displacement of the second fixing means (422) in the substrate direction.

[0110] Referring to FIG. 10, when the displacement (d1) of the first fixing part (220) in the substrate direction is configured to be greater than the displacement (d2) of the second fixing part in the substrate direction, members having different heights can be fixed by the first fixing part (220) and the second fixing part (420), respectively.

[0111] Referring to FIGS. 11 to 13 as another embodiment of the present invention, the first clamp unit (200) may further include a first horizontal driving unit (223), and the second clamp unit (400) may further include a second horizontal driving unit (423) configured to move in the direction of the substrate. Specifically, the first fixing unit (220) may further include a first horizontal driving unit (223), and the second fixing unit (420) may further include a second horizontal driving unit (423). The first horizontal driving unit (223) may be configured to move the first fixing means (222) back and forth in the second direction (D2), and the second horizontal driving unit (423) may be configured to move the second fixing means (422) back and forth in the second direction (D2). Since the description of the first horizontal driving unit (223) described above may also be applied to the second horizontal driving unit (423), a detailed description thereof will be omitted.

[0112] The first and second horizontal driving units are independently controlled and can be configured to have different displacements in the substrate direction.

[0113] The first horizontal driving unit (223) and the second horizontal driving unit (423) may be configured such that the displacement (d1) of the first fixing unit (220) in the substrate direction is greater than the displacement (d2) of the second fixing unit (420) in the substrate direction. The first horizontal driving unit (223) may be arranged between the first connecting unit (221) and the first fixing means (222), and the second horizontal driving unit (423) may be arranged between the second connecting unit (421) and the second fixing means (422) such that the displacement of the first fixing unit (222) in the substrate direction is greater than the displacement of the second fixing unit (422) in the substrate direction.

[0114] Referring to FIGS. 14 to 16 as another embodiment of the present invention, the stacking device may include a first support member (300) and a second support member (500) disposed on a main body member (100). The first support member (300) may fix the first clamp unit (200) to the main body member (100). In this case, the first support member (300) may fix the first clamp unit (200) to the main body member so that it does not shake in the first direction (D1) and the second direction (D2), thereby improving precision when stacking the components of the all-solid-state battery.

[0115] A first clearance space (301) may be defined between the first support member (300) and the first fixing member (220). In this case, the first support member (300) may be configured to fix the first clamp unit (200) to the main body so that it does not shake in the first direction (D1) and the second direction (D2), while allowing for up-and-down movement in the third direction (D3).

[0116] The upper part of the first support member (300) can be coupled to the first fixing member (220) so as to be able to move up and down. That is, the first support member (300) can be coupled so as to be able to move up and down in response to the height of the first fixing member (220) changing during substrate work. In this case, the first support member (300) can fix the first fixing member (220) to the main body at various heights without shaking in the first direction (D1) and the second direction (D2).

[0117] The second support member (500) can fix the second clamp unit (400) to the main body (100). In this case, the second support member (500) can fix the second clamp unit (400) to the main body without shaking in the first direction (D1) and the second direction (D2), thereby improving precision when stacking the components of the all-solid-state battery.

[0118] A second clearance space (501) may be defined between the second support member (500) and the second fixing member (420). In this case, the second support member (500) may be configured to fix the second clamp unit (400) to the main body so that it does not shake in the first direction (D1) and the second direction (D2), while allowing for an up-and-down movement in the third direction (D3).

[0119] The upper part of the second support member (500) can be coupled to the second fixing member (420) so as to be able to move up and down. That is, the second support member (500) can be coupled so as to be able to move up and down in response to the height of the second fixing member (420) changing during substrate work. In this case, the second support member (500) can fix the second fixing member (420) to the main body at various heights without shaking in the first direction (D1) and the second direction (D2).

[0120] Referring to FIG. 17, a stacking device according to another embodiment of the present invention may include a stage (1000), a working area (2000), a main body (100), a first clamp unit (200), a first support (300), a second clamp unit (400), and a second support (500). The first clamp unit (200) may include a first vertical driving unit (210) and a first fixing unit (220). The first fixing unit (220) may include a first connecting unit (221), a first horizontal driving unit (223), and a first fixing means (222). The second clamp unit (400) may include a second vertical driving unit (410) and a second fixing unit (420). The second fixing unit (420) may include a second connecting unit (421), a second horizontal driving unit (423), and a second fixing means (422). A detailed description of the arrangement and function of each component of the stacking device is omitted as the previously described content may apply.

[0121] FIGS. 18, 20, 22, 24, 26, and 28 are plan views for explaining a method for manufacturing an all-solid-state battery. FIGS. 19a and 19b are cross-sectional views taken along lines A-A' and B-B' of FIG. 18, respectively. FIGS. 21a and 21b are cross-sectional views taken along lines A-A' and B-B' of FIG. 20, respectively. FIGS. 23a and 23b are cross-sectional views taken along lines A-A' and B-B' of FIG. 22, respectively. FIGS. 25a and 25b are cross-sectional views taken along lines A-A' and B-B' of FIG. 24, respectively. FIGS. 27a and 27b are cross-sectional views taken along lines A-A' and B-B' of FIG. 26, respectively. Figures 29a and 29b are cross-sectional views taken along lines A-A' and B-B' of Figure 28, respectively.

[0122] Referring to FIGS. 18, 19a, and 19b, a method for manufacturing an all-solid-state battery according to embodiments of the present invention may utilize a stacking device including a first clamp unit (200) and a second clamp unit (400). A stacked body in which a first member (20) and a second member (41) are stacked may be provided on a stage (1000). The second member (41) may be arranged on the outer side of one surface of the first member (20). The second clamp unit (400) may grip the second member (41).

[0123] A third member (30) may be provided on a laminate of a first member (20) and a second member (41). The second clamp unit (400) that holds the second member (41) may not overlap with the third member (30) in a third direction (D3). The first clamp unit (200) may not overlap with the third member (30) in a third direction (D3). The third member (30) may be provided on the first member (20) without being obstructed by the first clamp unit (200) and the second clamp unit (400).

[0124] Referring to FIGS. 20, 21a, and 21b, a method for manufacturing an all-solid-state battery according to embodiments of the present invention may provide a laminate in which a first member (20), a second member (41), and a third member (30) are laminated on a stage (1000). The second member (41) surrounds the third member (30), and the height of the third member (30) may be higher than the height of the second member (41). The first clamp unit (200) may grip the third member (30). The second clamp unit (400) may grip the second member (41).

[0125] Referring to FIGS. 22, 23a, and 23b, a method for manufacturing an all-solid-state battery according to embodiments of the present invention may provide a laminate in which a first member (20), a second member (41), and a third member (30) are laminated on a stage (1000). A lamination device may release the fixation of the second member (41) and the third member (30). A fourth member (42) may be provided on the laminate. The first clamp unit (200) may not overlap with the fourth member (42) in the third direction (D3). The second clamp unit (400) may not overlap with the fourth member (42) in the third direction (D3). The fourth member (42) may be provided on the second member (41) without being obstructed by the first clamp unit (200) and the second clamp unit (400). The fourth member (42) may surround the third member (30). The height of the fourth member (42) may be substantially the same as the height of the third member (30). In the present specification, the two heights being substantially the same means that the difference between the two heights is 10% or less, 5% or less, or 3% or less. For example, the height of the fourth member (42) may be 0.9 times, 0.95 times, 0.97 times, or 1.0 times, or 1.1 times, 1.05 times, or 1.03 times, the height of the third member (30).

[0126] Referring to FIGS. 24, 25a, and 25b, a method for manufacturing an all-solid-state battery according to embodiments of the present invention may provide a laminate in which a first member (20), a multilayer member (40), and a third member (30) are laminated on a stage (1000). The first clamp unit (200) may hold the third member (30). The second clamp unit (400) may hold the fourth member (42).

[0127] Referring to FIGS. 26, 27a, and 27b, a method for manufacturing an all-solid-state battery according to embodiments of the present invention may provide a laminate in which a first member (20), a multilayer member (40), and a third member (30) are laminated on a stage (1000). The multilayer member (40) may surround the third member (30). The multilayer member (40) may be arranged on the outer surface of one side of the first member (20).

[0128] A fifth member (50) may be provided on the laminate. When viewed in plan, the area of ​​the fifth member (50) may be substantially equal to or greater than the area of ​​the third member (30) as a reference. When viewed in plan, the area of ​​the fifth member (50) may be substantially equal to or different from the area of ​​the first member (20). In the present specification, the two areas being substantially equal means that the difference between the two areas is 10% or less, 5% or less, or 3% or less. For example, the area of ​​the first member (20) may be 0.9 times, 0.95 times, 0.97 times, or 1.0 times, or 1.1 times, 1.05 times, or 1.03 times, the area of ​​the fifth member (50).

[0129] The first clamp unit (200) may not overlap with the fifth member (50) in the third direction (D3). The second clamp unit (400) may not overlap with the fifth member (50) in the third direction (D3). The fifth member (50) may be provided on the laminate without being obstructed by the first clamp unit (200) and the second clamp unit (400).

[0130] Referring to FIGS. 28, 29a, and 29b, a method for manufacturing an all-solid-state battery according to embodiments of the present invention may provide a laminate in which a first member (20), a multilayer member (40), a third member (30), and a fifth member (50) are laminated on a stage (1000). The first clamp device (200) may grip the fifth member (50). The second clamp device (400) may grip the fourth member (42). Therefore, the laminate devices may each grip members having different heights of the laminate.

[0131] In a method for manufacturing an all-solid-state battery according to an embodiment of the present invention, the first member (20) may include a positive electrode (21) and a solid electrolyte (22). The second member (41) may include an inactive member. The third member (30) may include a negative electrode. The fourth member (42) may include an inactive member. The fifth member (50) may include a positive electrode. Descriptions of the positive electrode, the solid electrolyte, the inactive member, and the negative electrode are omitted because the previously described contents are applicable.

[0132] 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, it should be understood that the embodiments described above are exemplary in all respects and are not limiting.

Claims

1. Main body; and Including a clamp unit arranged on the above main body, The above clamp unit: A first clamp unit including a first fixing member and a first vertical driving member configured to vertically move the first fixing member; and A second clamp unit comprising a second fixed member and a second vertical driving member configured to vertically move the second fixed member; The first clamp unit and the second clamp unit are spaced apart from each other in the first direction, The first fixing portion of the first clamp unit is configured to grip the upper surface of the first member, The second fixing part of the second clamp unit is configured to grip the upper surface of the second member, A laminated device in which the upper surface of the first member and the upper surface of the second member are positioned at different heights.

2. In paragraph 1, The above first and second vertical driving units are controlled independently of each other, A stacking device in which the first and second vertical driving units are configured so that the first fixing unit and the second fixing unit can be positioned at different heights.

3. In paragraph 1, The above main body is configured to be able to move in the direction of the substrate, A laminated device in which the substrate direction is a second direction intersecting the first direction.

4. In paragraph 3, A laminated device wherein the first fixing portion and the second fixing portion have different lengths in the direction of the substrate.

5. In paragraph 1, The above first clamp unit further includes a first horizontal driving unit, The first horizontal driving unit is configured such that the displacement of the first fixed unit in the substrate direction is greater than the displacement of the second fixed unit in the substrate direction. A laminated device in which the substrate direction is a second direction intersecting the first direction.

6. In paragraph 1, The first clamp unit includes a first horizontal driving unit configured to move in the direction of the substrate, The second clamp unit includes a second horizontal driving unit configured to move in the direction of the substrate, A laminated device in which the substrate direction is a second direction intersecting the first direction.

7. In paragraph 1, Further comprising a first support member and a second support member arranged on the main body, The above first support member fixes the first clamp unit to the main body, The second support member is a laminated device that secures the second clamp unit to the main body.

8. In paragraph 7, A first free space is defined between the first support part and the first fixing part, A laminated device in which a second clearance space is defined between the second support portion and the second fixing portion.

9. In paragraph 8, The upper part of the first support part is connected to the first fixed part so as to be able to move up and down, A laminated device in which the upper part of the second support part is connected to the second fixed part so as to be able to move up and down.

10. A method for manufacturing an all-solid-state battery using a stacking device including a first clamp unit and a second clamp unit, Preparing a laminate having a first member and a second member arranged on the outer side of one side of the first member; Fixing the second member with the second clamp unit; Placing a third member on the first member, the second member surrounding the third member, the height of the third member being higher than the height of the second member; A method for manufacturing an all-solid-state battery, comprising fixing the third member with the first clamp unit.

11. In paragraph 10, Releasing the fixation of the second member and the third member; Placing a fourth member on the second member, the fourth member surrounding the third member; Fixing the fourth member with the first clamp unit and fixing the third member with the second clamp unit; Releasing the fixation of the third member and the fourth member; Placing a fifth member on the third member and the fourth member; and A method for manufacturing an all-solid-state battery, comprising fixing the fourth member with the first clamp unit and fixing the fifth member with the second clamp unit.

12. In paragraph 10, The above first member comprises a positive electrode and a solid electrolyte, The third member is a method for manufacturing an all-solid-state battery including a negative electrode.

13. In paragraph 11, The above first member comprises a positive electrode and a solid electrolyte, The third element comprises a cathode, The fifth component is a method for manufacturing an all-solid-state battery including a positive electrode.

14. In paragraph 10, A method for manufacturing an all-solid-state battery, wherein the second member comprises an inactive member.

15. In paragraph 11, A method for manufacturing an all-solid-state battery, wherein the height of the fourth member is substantially the same as the height of the third member.

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