All-solid-state battery manufacturing device and manufacturing method

Abstract

According to the embodiment of the present invention, since the pressing process is performed in a state where the plate-shaped material and the die mold for containing the plate-shaped material are housed in an external punch mold, a large number of plate-shaped materials can be dry-pressed. Therefore, the dry pressing process of the plate-shaped material can be simplified and the time required for the process can be shortened.

Description

[Technical Field]

[0001] Embodiments of the present invention relate to an all-solid-state battery, and an apparatus and method for manufacturing the all-solid-state battery. [Background technology]

[0002] Recently, in response to industrial demands, active development of batteries with high energy density and safety has been underway. All-solid-state batteries are batteries in which a positive electrode, a solid electrolyte, and a negative electrode are laminated and then compressed to form a compact structure. These batteries use a solid electrolyte instead of the liquid electrolyte used in conventional secondary batteries.

[0003] All-solid-state batteries are manufactured using either wet isostatic pressing or dry isostatic pressing. The wet isostatic pressing method has the drawback of low productivity due to the complicated sealing and desealing processes involved in the wet process. Therefore, there is a growing trend toward dry isostatic pressing in the development of all-solid-state batteries. An example of a manufacturing method using the dry isostatic pressing method is disclosed in U.S. Patent No. 5,490,969 (registered February 13, 1996). However, the manufacturing method disclosed in the prior document is suitable for pressing cylindrical products, and therefore a new manufacturing method needs to be developed to produce plate-shaped all-solid-state batteries.

[0004] The above-mentioned information disclosed in the background of the invention is intended to enhance understanding of the background of the invention only, and may therefore include information that does not constitute prior art. Summary of the Invention [Problem to be solved by the invention]

[0005] Embodiments of the present invention provide an all-solid-state battery, and an apparatus and method for manufacturing the all-solid-state battery. [Means for solving the problem]

[0006] An embodiment of the present invention can provide an apparatus for manufacturing an all-solid-state battery, the apparatus including: a pressure vessel having an accommodation space for accommodating a medium; a pair of closing covers for opening and closing the pressure vessel; an external punch mold that is partially or completely accommodated inside the pressure vessel; and a die mold that is inserted into the external punch mold with a plurality of plate-shaped materials accommodated therein; wherein a surface of the plate-shaped material, a plate surface of the die mold containing the plate-shaped material, and a plate surface of the external punch mold containing the die dies are parallel to each other, the external punch mold is arranged so that an outer side thereof contacts the medium, and the die mold is arranged between the external punch mold and the closing cover and does not contact the medium.

[0007] The external punch mold may include a disk-shaped base plate and a mold receiving portion extending from the base plate in a plate shape to receive the die mold.

[0008] The die mold includes a die plate having a plate surface with a plurality of recessed portions into which the plate-shaped material is inserted, a die pad portion supporting the die plate, and a fixing film coupled to the die plate with the plate-shaped material inserted in the recessed portions, and the die plate can be inserted into the mold receiving portion.

[0009] The mold may further include a circular ejection plate having a through hole formed therein through which the die plate is inserted, and the ejection plate may be disposed between the base plate of the outer punch mold and the die pad portion of the die mold.

[0010] The ejection plate may include a cutting portion cut into a shape corresponding to the shape of the die pad portion on a surface facing the die pad portion.

[0011] The pressure vessel may have a disk shape and may include a pressurizing portion in which the medium is accommodated, and a cover inserting portion formed on both ends of the disk, communicating with the pressurizing portion and to which the closing cover is connected.

[0012] The inner diameter of the pressure member may be smaller than the diameter of the closing cover, and the diameters of the base plate and the ejection plate may correspond to the diameter of the closing cover.

[0013] The inner diameter of the pressure member may be larger than the diameter of the closing cover, the diameter of the base plate may correspond to the inner diameter of the pressure member, and the diameter of the ejection plate may correspond to the diameter of the closing cover.

[0014] The apparatus may further include a support unit including: a correction unit disposed at a lower portion of the pressure vessel and configured to push and move the closing cover toward the pressure vessel during a pressurizing process; a support block disposed at an upper portion of the pressure vessel; and a support unit configured to support the correction unit and the support block.

[0015] The correction unit may include a moving block disposed under the closing cover, a guide block disposed under the moving block and supporting the moving block, a support base coupled to the guide block and supporting the guide block, an insertion bolt rotatably installed on one side of the support base and moving the moving block in one direction, and an extraction bolt rotatably installed on the other side of the support base and installed facing the insertion bolt and moving the moving block toward the insertion bolt.

[0016] The upper or lower surface of the moving block may be an inclined surface, and the height of the moving block may decrease from the end of the moving block facing the insertion bolt to the end of the moving block facing the withdrawal bolt.

[0017] The upper surface of the guide block may be an inclined surface, and the height of the guide block may increase from the end facing the insertion bolt to the end facing the withdrawal bolt.

[0018] An embodiment of the present invention may provide a method for manufacturing an all-solid-state battery, including the steps of: inserting a plate-shaped material into each of a plurality of recesses of a die plate and bonding a fixing film to the die plate; inserting the die plate into a mold receiving portion of an external punch die; inserting the external punch die into a pressure vessel and inserting a lower closing cover into a lower portion of the pressure vessel so as to be in close contact with a base plate and an ejection plate of the external punch die; filling a medium into the pressure vessel with the upper and lower closing covers inserted into the pressure vessel, and pressurizing the medium by additionally pumping it through a pipe separately connected to the pressure vessel or the closing cover; and moving a moving block to bring the lower closing cover into close contact with the pressure vessel and performing a pressurizing process.

[0019] The pressing step may include correcting the displacement of the lower closing cover by moving the moving block by an amount corresponding to the displacement of the lower closing cover pressed by the pressure during pressing.

[0020] The surface of the plate-shaped material, the plate surface of the die plate in which the plate-shaped material is accommodated, and the plate surface of the mold accommodating portion in which the die mold is accommodated may be parallel to one another.

[0021] The outer punch die is arranged so that its outside is in contact with the medium, and the die die is arranged between the inside of the outer punch die and the closing cover and does not come into contact with the medium.

[0022] Furthermore, an embodiment of the present invention can provide an all-solid-state battery manufactured by the manufacturing method of any one of items 13 to 16.

[0023] An embodiment of the present invention can provide an apparatus for manufacturing an all-solid-state battery, the apparatus including: a pressure vessel having an accommodation space for accommodating a medium; a pair of closing covers for opening and closing the pressure vessel; an external punch die that is partially or completely accommodated inside the pressure vessel and has a base plate and a plurality of mold accommodating sections that extend from the base plate in a plate-like shape and accommodate the die dies; and a plurality of die dies that are inserted into the mold accommodating sections while accommodating a plurality of plate-shaped materials; wherein a surface of the plate-shaped material, a plate surface of the die die containing the plate-shaped material, and a plate surface of the external punch die containing the die dies are parallel to each other, and the external punch die is positioned to contact the medium, and the die die is positioned between the external punch die and the closing covers so as not to contact the medium.

[0024] The mold receiving portions may be spaced apart from one another so as not to overlap each other.

[0025] The die mold includes a die plate having a plate surface with a plurality of recessed portions into which the plate-shaped material is inserted, a die pad portion supporting the die plate, and a fixing film coupled to the die plate with the plate-shaped material inserted in the recessed portions, and the die plate can be inserted into the mold receiving portion.

[0026] The mold may further include a disk-shaped ejector plate having a plurality of through holes formed therein through which the die plate is inserted, and the ejector plate may be disposed between the base plate of the outer punch mold and the die pad portion of the die mold.

[0027] The ejection plate may include a cutting portion cut into a shape corresponding to the shape of the die pad portion on a surface facing the die pad portion.

[0028] The pressure vessel may have a disk shape and may include a pressurizing portion in which the medium is accommodated, and a cover inserting portion formed on both ends of the disk, communicating with the pressurizing portion and to which the closing cover is connected.

[0029] The inner diameter of the pressure member may be smaller than the diameter of the closing cover, and the diameters of the base plate and the ejection plate may correspond to the diameter of the closing cover.

[0030] The apparatus may further include a support unit including: a correction unit disposed at a lower portion of the pressure vessel and configured to push and move the closing cover toward the pressure vessel during a pressurizing process; a support block disposed at an upper portion of the pressure vessel; and a support unit configured to support the correction unit and the support block.

[0031] The correction unit may include a moving block disposed under the closing cover, a guide block disposed under the moving block and supporting the moving block, a support base coupled to the guide block and supporting the guide block, an insertion bolt rotatably installed on one side of the support base and moving the moving block in one direction, and an extraction bolt rotatably installed on the other side of the support base and installed facing the insertion bolt and moving the moving block toward the insertion bolt.

[0032] The upper or lower surface of the moving block may be an inclined surface, and the height of the moving block may decrease from the end of the moving block facing the insertion bolt to the end of the moving block facing the withdrawal bolt.

[0033] The upper surface of the guide block may be an inclined surface, and the height of the guide block may increase from the end facing the insertion bolt to the end facing the withdrawal bolt.

[0034] An embodiment of the present invention may provide a method for manufacturing an all-solid-state battery, including the steps of: inserting a plate-shaped material into each of a plurality of recesses of a die plate and bonding a fixing film to the die plate; inserting the plurality of die plates into each of a plurality of mold receiving portions of an external punch die; inserting the external punch die into a pressure vessel and inserting a lower closing cover into a lower part of the pressure vessel so as to be in close contact with a base plate and an ejection plate of the external punch die; filling a medium into the pressure vessel with the upper and lower closing covers inserted into the pressure vessel, and pressurizing the medium by additionally pumping it through a pipe separately connected to the pressure vessel or the closing cover; and moving a moving block to bring the lower closing cover into close contact with the pressure vessel and performing a pressurizing process.

[0035] The surface of the plate-shaped material, the plate surface of the die plate in which the plate-shaped material is accommodated, and the plate surface of the mold accommodating portion in which the die mold is accommodated may be parallel to one another.

[0036] The outer punch die is disposed so as to contact the medium, and the die die is disposed between the outer punch die and the closing cover and may not contact the medium.

[0037] The step of performing the pressure process may include correcting the displacement of the lower closing cover by moving the moving block by an amount corresponding to the displacement of the lower closing cover pressed by the pressure during pressure application.

[0038] Furthermore, an embodiment of the present invention can provide an all-solid-state battery manufactured by the manufacturing method of any one of items 29 to 32. [Effects of the Invention]

[0039] According to an embodiment of the present invention, the pressing process is performed while the plate material and the die mold containing the plate material are housed in an external punch mold, so the plate material can be dry-pressed. Therefore, pre- and post-processes related to packaging, such as the use of an outer shell material to prevent contact between the plate material and the medium, vacuuming, drying, and unpacking, can be eliminated or simplified. This reduces the cost of process materials, simplifies the dry pressing process for the plate material, and shortens the process time, thereby reducing the manufacturing cost of the pressing process.

[0040] Furthermore, according to the embodiment of the present invention, the pressing of the closing cover during the pressurizing process can be prevented, and deformation and fatigue damage of the mold can be prevented. This can further contribute to the manufacturing cost of the pressurizing process by reducing maintenance and repair costs, such as extending the life of pressurizing equipment parts. [Brief explanation of the drawings]

[0041] [Figure 1] 1 is a front cross-sectional view showing an apparatus for manufacturing an all-solid-state battery according to an embodiment of the present invention. [Figure 2] 1 is a side cross-sectional view showing an apparatus for manufacturing an all-solid-state battery according to an embodiment of the present invention. [Figure 3] FIG. 3 is a cross-sectional view showing a manufacturing unit of the all-solid-state battery manufacturing apparatus shown in FIGS. 1 and 2. [Figure 4] FIG. 4 is an exploded perspective view showing a main part of the all-solid-state battery manufacturing apparatus shown in FIG. 3. [Figure 5] 5 is a cutaway perspective view of the external punch die according to FIG. 4. FIG. [Figure 6] 5 is a perspective view showing the ejection plate and die mold assembly shown in FIG. 4. FIG. [Figure 7] FIG. 7 is a cutaway perspective view of the ejector plate and die mold according to FIG. 6. [Figure 8] FIG. 5 is an exploded perspective view of the die mold according to FIG. 4. [Figure 9] FIG. 9 is a cross-sectional view of the die mold according to FIG. 8. [Figure 10] FIG. 7 is a cross-sectional view of the ejector plate and die mold according to FIG. 6. [Figure 11] 4 is a schematic diagram showing the direction of pressure applied to the main part shown in FIG. 3. [Figure 12] FIG. 4 is a cross-sectional view showing a main part of an apparatus for manufacturing an all-solid-state battery according to another embodiment of the present invention. [Figure 13] 4 is a schematic view of a part of the production unit according to FIG. 3; FIG. [Figure 14] 13 is a schematic view of a part of the production unit according to FIG. 12. FIG. [Figure 15] 3 is a schematic view of a part of the support unit according to FIGS. 1 and 2; FIG. [Figure 16] 3 is a schematic diagram illustrating the operating principle of the support unit according to FIGS. 1 and 2; FIG. [Figure 17] 1 is a front cross-sectional view showing an apparatus for manufacturing an all-solid-state battery according to an embodiment of the present invention. [Figure 18] 1 is a side cross-sectional view showing an apparatus for manufacturing an all-solid-state battery according to an embodiment of the present invention. [Figure 19] FIG. 19 is a cross-sectional view showing a manufacturing unit of the manufacturing apparatus for the all-solid-state battery according to FIGS. 17 and 18. [Figure 20] FIG. 20 is an exploded perspective view showing a main part of the all-solid-state battery manufacturing apparatus shown in FIG. 19. [Figure 21] 21 is a cutaway perspective view of a portion of the external punch die according to FIG. 20. FIG. [Figure 22] FIG. 21 is a perspective view showing the ejection plate according to FIG. 20. [Figure 23] FIG. 21 is an exploded perspective view of the die mold according to FIG. 20. [Figure 24] FIG. 24 is a partial cross-sectional view of the die mold according to FIG. 23. [Figure 25] 21 is a partial cross-sectional view of the die and outer punch tooling of FIG. 20. FIG. [Figure 26] FIG. 20 is a schematic diagram showing the direction of pressure applied to the main part according to FIG. 19. DETAILED DESCRIPTION OF THE INVENTION

[0042] The following examples are provided to more fully explain the present invention to those skilled in the art, and the scope of the present invention is not limited to the following examples, as they may be modified into many other forms. Rather, these examples are provided to make the present disclosure more complete and thorough, and to fully convey the concept of the present invention to those skilled in the art.

[0043] In the following drawings, the thickness and size of each layer have been exaggerated for convenience and clarity of explanation, and the same reference numerals refer to the same elements throughout the drawings. As used herein, the term "and / or" includes any one and all combinations of one or more of the associated listed items. In addition, in this specification, the term "connected" refers not only to a case where member A and member B are directly connected, but also to a case where member A and member B are indirectly connected via member C between them.

[0044] The terms used in this specification are for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in this specification, the singular forms can include the plural forms unless the context clearly dictates otherwise. Furthermore, as used in this specification, the words "comprise," "include," and / or "comprising," "including," specify the presence of a stated shape, number, step, operation, member, element, and / or group thereof, but do not exclude the presence or addition of one or more other shapes, numbers, operations, members, elements, and / or groups.

[0045] In this specification, terms such as "first" and "second" are used to describe various members, components, regions, layers, and / or portions, but it is clear that these members, components, regions, layers, and / or portions should not be limited by these terms. These terms are used only to distinguish one member, component, region, layer, or portion from another region, layer, or portion. Thus, a first member, first component, first region, first layer, or first portion described in detail below can be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the present invention.

[0046] Terms related to space, such as "beneath," "below," "lower," "above," and "upper," may be used to facilitate understanding of one element or feature from another element or feature shown in the drawings. These terms related to space are used to facilitate understanding of the present invention in various process states or use states of the present invention, and are not intended to limit the present invention. For example, if an element or feature in the drawing is turned over, an element or feature described as "beneath" or "below" becomes "upper" or "upper." Therefore, "beneath" is a concept that encompasses "upper" or "below."

[0047] Hereinafter, an all-solid-state battery, an apparatus and method for manufacturing the all-solid-state battery according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0048] FIG. 1 is a front cross-sectional view showing an apparatus for manufacturing an all-solid-state battery according to one embodiment of the present invention, and FIG. 2 is a side cross-sectional view showing an apparatus for manufacturing an all-solid-state battery according to one embodiment of the present invention.

[0049] As shown in FIGS. 1 and 2, an apparatus 10 for manufacturing an all-solid-state battery according to an embodiment of the present invention may include a manufacturing unit 100 and a support unit 300 that supports the manufacturing unit 100.

[0050] The manufacturing unit 100 may include a pressure vessel 110 and closing covers 120a and 120b for applying pressure, an external punch mold 130 for shaping the plate-shaped material, an ejection plate 140, and a die mold 150. The support unit 300 may include a correction unit 310 for gap correction, a support unit 330 (usually called a yoke and composed of a yoke-ring and a yoke-block) that supports the manufacturing unit 100 from above and below, and a support block 350 that is inserted between the correction unit 310 and the support unit 330.

[0051] Hereinafter, the structure of the manufacturing unit and the manufacturing method of the all-solid-state battery will be described in detail.

[0052] FIG. 3 is a cross-sectional view showing a manufacturing unit of the manufacturing apparatus for the all-solid-state battery shown in FIGS. 1 and 2, and FIG. 4 is an exploded perspective view showing the main parts of the manufacturing apparatus for the all-solid-state battery shown in FIG.

[0053] 1 to 4, an all-solid-state battery manufacturing apparatus 10 is equipment for pressurizing a plate-shaped material 1 (see FIG. 8) that will become an electrode body of an all-solid-state battery. The manufacturing apparatus 10 may include a pressure vessel 110 and a pair of closing covers 120a, 120b for pressurizing, as well as an outer punch mold 130, an ejection plate 140, and a die mold 150 for containing and shaping the plate-shaped material 1.

[0054] For example, the plate-shaped material 1 may include a structure in which an electrode plate for an all-solid-state battery and an electrolyte or various buffer films are laminated. That is, the plate-shaped material 1 refers to a material that needs to be densified through an ultra-high pressure pressing process. For example, the plate-shaped material 1 may include an electrode plate, an electrolyte, other films, plates, etc., for the purpose of generating a uniform pressure distribution on the upper and lower surfaces of a single or multi-layer all-solid-state battery. Conventional methods can be used to laminate the plate-shaped material 1.

[0055] As shown in FIGS. 3 and 4, the pressure vessel 110 has a cylindrical appearance and a cylindrical internal space that runs from top to bottom. Cylindrical closing covers 120a and 120b are inserted into the upper and lower parts of the internal space. For example, the pressure vessel 110 and the closing covers 120a and 120b may be made of stainless steel. The area excluding the cover insert 114 into which the closing covers 120a and 120b are inserted may be defined as the pressure section 112. The pressure section 112 may be filled with a medium that applies an ultra-high isotropic pressure to the plate-shaped material 1. In some examples, the medium may be water or oil. In some examples, the inner diameter Dc of the cover insert 114 may be larger than the inner diameter Dv of the pressure section 112. After the upper closing cover 120a is attached to the pressure vessel 110 and the outer punch mold 130 is attached inside the pressure vessel 110, the lower closing cover 120b, on which the removable die mold 150 and ejection plate 140 are mounted, may be partially housed in the pressure vessel 110, and the medium may be filled in the pressure vessel 110. Thereafter, although not shown in the drawings, a pressure pump system, in which the medium moves through a pipe installed through the closing covers 120a, 120b or the side of the pressure vessel 110, may be used to precisely control the addition or discharge of the medium. Thus, when the medium filled in the pressure unit 112 is compressed to a specific target pressure with the upper and lower closing covers 120a, 120b fastened, a high or ultra-high pressure for compressing the plate-shaped material 1 may be generated. For example, the pressure applied inside the pressure vessel 110 may be in the high or ultra-high pressure range of 100 MPa to 700 MPa. The plate-shaped material 1 is housed in each mold and placed in the pressure unit 112.

[0056] Figure 5 is a cutaway perspective view of the external punch die according to Figure 4, Figure 6 is a combined perspective view of the ejector plate and die die according to Figure 4, Figure 7 is a cutaway perspective view of the ejector plate and die die according to Figure 6, Figure 8 is an exploded perspective view of the die die according to Figure 4, Figure 9 is a cross-sectional view of the die die according to Figure 8, Figure 10 is a cross-sectional view of the ejector plate and die die according to Figure 6, and Figure 11 is a schematic diagram showing the direction of pressure applied to the main parts according to Figure 3.

[0057] As shown in FIGS. 3 to 5 , the external punch die 130 is coupled to the die die 150 via an ejector plate 140. Exemplarily, the external punch die 130 may be made of an elastic material such as rubber. The external punch die 130 may include a disk-shaped base plate 132 and a mold receiving portion 134 integrally formed with the base plate 132. The base plate 132 may have a predetermined thickness and a diameter corresponding to the inner diameter of the cover insert portion 114 and the diameter Dc of the upper and lower closing covers 120a and 120b. The mold receiving portion 134 extends upward from the upper surface of the base plate 132 and receives a die plate 154 (see FIGS. 7 and 8 ) of the die die 150. To this end, the mold receiving portion 134 may have a hollow box shape and communicate with the lower surface of the base plate 132. The size and shape of the mold receiving portion 134 may correspond to the size and shape of the die plate 154 (described below). When the external punch die 130 is inserted into the pressure vessel 110, the mold receiving portion 134 is positioned within the pressure unit 112 for pressure forming of the plate-shaped material 1. The outer side of the mold receiving portion 134 and the upper side of the base plate 132 are in contact with the medium while abutting the pressure unit 112. However, the side and lower sides of the base plate 132 may be positioned within the cover insertion portion 114. The external punch die 130 can be assembled or fixed to the pressure vessel using a conventional manufacturing method for isostatic pressing equipment. The die plate 154 of the die mold 150, which corresponds to the moving portion, is inserted and installed inside the mold receiving portion 134, which corresponds to the fixed portion, with the ejector plate 140 sandwiched between them. Thereafter, the die mold 150 and the plate-shaped material 1 are removed from the mold receiving portion 134 by pulling the ejector plate 140 and withdrawing the die mold 150. In the pressurizing process for manufacturing an all-solid-state battery proposed in the present invention, the above-mentioned pulling and pulling operations are repeated through the fixed mold receiving portion 134 in a "dry method."

[0058] As shown in FIGS. 4, 6, and 7, the ejector plate 140 is configured to pull the die mold 150 into and out of the external punch mold 130. The ejector plate 140 is disk-shaped and has a through-hole 142 formed in the center of the plate surface. A cutting portion 144 may be formed on the lower surface of the ejector plate 140 at the position corresponding to the through-hole 142. The cutting portion 144 has a shape corresponding to the shape of a die pad portion 152 of the die mold 150 (described below), and may be cut in a tapered or stepped shape, for example. For example, with reference to FIG. 7, the height of the through-hole 142 may correspond to half the thickness of the ejector plate 140. The thickness of the cutting portion 144 may correspond to the remaining half of the thickness of the ejector plate 140. Due to the presence of the cutting portion 144, the die mold 150 can be easily separated from the external punch mold 130 by pulling the ejector plate 140. The ejector plate 140 provides support between the elastic outer punch 130 and the steel closing cover 120b during compression of the plate material 1. The ejector plate 140 also provides support and cushioning between the closing cover 120b and the die 150, preventing excessive deformation of the base plate 132. The ejector plate 140 is not fixed to the pressure vessel 110 or the closing cover 120b, and is subject to repeated contact and separation during the compression process. Because the ejector plate 140 provides support and cushioning and is subject to frequent contact and separation, it may be made of a material with a predetermined durability. For example, the ejector plate 140 may be made of the same stainless steel or a similar material as the closing covers 120a, 120b or the die 150.

[0059] 4, 6 to 8, the die mold 150 may include a die pad portion 152, a die plate 154 having a recessed portion 154a that is filled with and supports the plate-shaped material 1, and a fixing film 156 attached to the die plate 154. The die pad portion 152 and the die plate 154 may be integrally formed, or the fixing film 156 may be provided separately and attached to the die plate 154. Alternatively, the die pad portion 152 and the die plate 154 may be formed separately depending on the process characteristics and purpose.

[0060] The die pad portion 152 is a portion that comes into close contact with the cutting portion 144 when the die mold 150 is inserted into the eject plate 140. The die pad portion 152 may be formed to a predetermined size and have a shape corresponding to the cutting portion 144. A die plate 154 is formed to extend from the upper portion of the die pad portion 152.

[0061] The die plate 154 is a rectangular parallelepiped plate having a predetermined size. The die plate 154 may have recessed portions 154a formed on both left and right side surfaces of the plate, as shown in FIG. 8. Exemplarily, the recessed portions 154a may be formed as a rectangle with a predetermined depth. However, the shape of the recessed portions 154a is not limited to a simple rectangle, and may basically have a shape and step corresponding to the outer shape of the plate-shaped material 1. For example, a plurality of recessed portions 154a may be formed symmetrically on the left and right sides of the die plate 154. After the plate-shaped material 1 is filled into the recessed portions 154a, it is densified through a pressing process. Once the recessed portions 154a are filled with the plate-shaped material 1, a fixing film 156 is attached to prevent the plate-shaped material 1 from coming off.

[0062] 8 and 9, the fixing film 156 is a film that fixes the sheet material 1 on the die plate 154, and may be fixed to the die plate 154 by a lamination method or the like. Exemplarily, the fixing film 156 may be made of a polymer material such as PE. The fixing film 156 may be selected from any polymer material that meets the desired lamination process characteristics, such as adhering to the die mold 150 above a certain temperature while maintaining a release property that allows it to easily separate from the sheet material 1. After the fixing film 156 is laminated, the die mold 150 is inserted into the ejector plate 140 and then inserted into the outer punch mold 130.

[0063] FIG. 10 shows only the combined state of the die 150 and the external punch 130, excluding the ejection plate 140. When the die 150 and the external punch 130 are combined as shown in FIG. 10, the fixing film 156 and the mold receiving portion 134 of the external punch 130 are positioned sequentially outside the sheet material 1. When the external punch 130 is inserted into the pressure vessel 110 in this state, pressure is applied to the mold receiving portion 134 of the external punch 130, as shown in FIG. 11. The applied pressure is perpendicular to the sheet surface of the mold receiving portion 134. The pressure of the medium applied to the outside of the mold receiving portion 134 causes the inside of the mold receiving portion 134 to adhere to the die plate 154, applying uniform "flat pressure" to the sheet material 1.

[0064] As described above, since pressure is applied uniformly to the entire plate surface of the mold receiving portion 134, the pressing process of this embodiment can be defined as a planar pressing process. Although the pressure from the actual medium acts on the entire outer punch die 130, since the base plate 132 is supported by the steel closing cover 120b, no effective pressure is generated or is offset. Therefore, only the planar pressure perpendicular to the plane of the plate material 1 is effective pressure. However, since ultra-high pressure can press in and deform parts of the outer punch die 130, a structure to prevent this is required (this will be explained later).

[0065] In the above-described embodiment, the diameters of the base plate 132, ejection plate 140, and closing covers 120a and 120b of the outer punch die 130 are all similar or identical, and are larger than the inner diameter of the pressure vessel 110. However, a manufacturing unit with a different structure from the above-described embodiment may be provided.

[0066] Hereinafter, an apparatus for manufacturing an all-solid-state battery according to another embodiment of the present invention will be described (only the structure different from the above-described embodiment will be described).

[0067] FIG. 12 is a cross-sectional view showing the main part of an apparatus for manufacturing an all-solid-state battery according to another embodiment of the present invention.

[0068] As shown in FIG. 12 , in a manufacturing unit 100′ according to another embodiment of the present invention, the inner diameter Dv of the pressurizing portion 112 of the pressure vessel 110′ may be larger than the inner diameter Dc of the cover insert portion 114′. Exemplarily, the diameter of the base plate 132 may correspond to the inner diameter of the pressurizing portion 112. The diameters of the ejector plate 140 and the closing covers 120a and 120b may correspond to the inner diameter of the cover insert portion 114′. All structures and assembly procedures are the same as those of the above-described embodiment, but the external punch die 130 is first inserted into the pressure vessel 110′ and then joined. Because the external punch die 130 is made of an elastic material, it can be deformed and inserted, or the mold receiving portion and the base plate can be separated and then joined. The structure in which the die mold 150 and the plate material 1, which are the movable portion, are pulled into and pulled out of the mold receiving portion of the external punch die 130, which is the fixed portion, is the same as that of the above-described embodiment.

[0069] In each of the above-described embodiments, the plate material 1 is accommodated in the die 150 and pressurized while inserted inside the outer punch 130, so that the plate material 1 can be pressurized dry. Therefore, the pressurizing process for the plate material is simplified compared to wet pressurizing methods, and the required process time can be shortened. In addition, because the vacuum sealing bag is replaced with a laminating film, the cost of consumable materials can be reduced, and the manufacturing cost of the pressurizing process can be reduced.

[0070] In the manufacturing apparatus for an all-solid-state battery having the above-described configuration, the manufacturing unit is supported by a support unit. The structure and operation of the support unit will be described in detail below.

[0071] FIG. 13 is a schematic diagram showing a part of the manufacturing unit according to FIG. 3, and FIG. 14 is a schematic diagram showing a part of the manufacturing unit according to FIG.

[0072] As shown in FIG. 13, pressure from the medium inside the pressure vessel 110 is directed toward the inner circumferential surface of the pressure vessel 110, toward the base plate 132 of the external punch die 130, and toward the plate surface of the mold receiving portion 134. At this time, pressure is transmitted to the ejector plate 140 and the closing covers 120a and 120b, causing them to be pushed downward by a certain distance (hereinafter referred to as the "pushing amount"). Because the diameter of the base plate 132 of the external punch die 130 is larger than the inner diameter of the pressure vessel 110, the edge (area A) of the base plate 132 is not subjected to direct pressure. At this time, stress may concentrate on the upper portion A' of the edge of the base plate 132, which is subjected to relatively different levels of pressure, causing deformation. In the embodiment shown in FIG. 14, stress may concentrate on the lower portion B' of the edge (area B) of the base plate 132, causing deformation. Deformation can lead to durability issues such as fatigue breakage, which must be prevented. For this reason, a support unit 300 is provided.

[0073] FIG. 15 is a schematic view of a part of the support unit according to FIGS.

[0074] As shown in FIGS. 1, 2 and 15, the support unit 300 includes a correction portion 310, a support portion 330, and a support block 350.

[0075] The correcting unit 310 is configured to prevent the ejection plate 140 and the closing cover 120b, which are in contact with the outer punch die 130, from being pushed in and to correct the amount of pushing in. The correcting unit 310 may include a moving block 311, a guide block 312, an insertion bolt 313, an extraction bolt 314, and a support 315.

[0076] The moving block 311 is disposed below the closing cover 120b and is a heavy body with a trapezoidal cross section as viewed in FIG. 15. More specifically, the moving block 311 may be trapezoidal in that the height (the distance between the top and bottom surfaces) of the end on the insertion bolt 313 side is greater than the height of the end on the extraction bolt 314 side. Therefore, the top and bottom surfaces of the moving block 311 form an inclined surface. The moving block 311 may be pushed toward the extraction bolt 314 by the insertion bolt 313 and move. As the moving block 311 moves, its height gradually increases, so that the moving block 311 pushes up the closing cover 120b. This prevents the outer punch die 130, the ejection plate 140, and the closing cover 120b from being pushed in. A guide block 312 is in close contact with the bottom of the moving block 311.

[0077] The guide block 312 is disposed below the moving block 311. The guide block 312 is a heavy body having a substantially hexahedral shape and an inclined upper surface with reference to FIG. 15. More specifically, the guide block 312 may have a height (distance between the upper and lower surfaces) that increases from the end on the insertion bolt 313 side to the end on the withdrawal bolt 314 side. The lower surface of the guide block 312 is not an inclined surface, but is closely attached and fixed parallel to the inner bottom surface of the support base 315. The angle θ between an imaginary reference line parallel to the lower surface of the guide block 312 and the upper inclined surface of the guide block 312 (or the lower surface of the moving block) may be designed taking into account the above-mentioned pushing amount.

[0078] The insertion bolt 313 may be rotatably installed on one side of the support base 315, and the extraction bolt 314 may be rotatably installed on the other side of the support base 315 opposite the insertion bolt 313. For example, the insertion bolt 313 may be disposed on the taller side of the moving block 311, and the extraction bolt 314 may be disposed on the shorter side of the moving block 311, as shown in FIG. 15 . When the insertion bolt 313 rotates, the insertion bolt 313 may move linearly toward and away from the extraction bolt 314. When the extraction bolt 314 rotates, the insertion bolt 313 may move linearly toward and away from the insertion bolt 313. Therefore, by rotating the insertion bolt 313, the moving block 311 can be pushed and moved toward the extraction bolt 314. As a result, the moving block 311 moves toward the extraction bolt 314 along the guide block 312 and its height gradually increases, thereby bringing the closing cover 120b into close contact with the pressure vessel 110. Conversely, the pull-out bolt 314 can be rotated to push and move the moving block 311 toward the insertion bolt 313. As a result, the moving block 311 moves along the guide block 312 toward the insertion bolt 313, gradually decreasing in height, creating a gap between the closing cover 120b and the correction part 310. Then, the manufacturing unit 100 can be separated from the support unit 300.

[0079] Although not shown in the drawings, for example, one screw bolt may pass through the moving block 311 from one side to the other and be rotatably connected to both sides of the support base 315. In this case, when the screw bolt is rotated in one direction, the moving block 311 may move in the direction of inserting the closing cover 120b, and when the screw bolt is rotated in the other direction, the moving block may move in the direction of withdrawing the closing cover.

[0080] For example, the support base 315 may have a box shape that is open upward. The support base 315 accommodates the moving block 311 and the guide block 312, and the lower surface of the guide block 312 may be fixed to the inner bottom surface. An insertion bolt 313 may be rotatably inserted into one of the opposing sides, and a withdrawal bolt 314 may be rotatably inserted into the other. Alternatively, as shown in FIG. 15 , the support base 315 may have a substantially U-shaped cross section rather than a box shape. In this case, the insertion bolt 313 and the withdrawal bolt 314 may be installed on the opposing sides, respectively. The outer bottom surface of the support base 315 may be fixed to the support part 330.

[0081] 1 and 2, the support unit 330 is illustrated as a ring-shaped yoke system supporting the manufacturing unit 100 from above and below, but is not limited thereto. For example, in the case of relatively low-pressure small equipment, the yoke system may be replaced with a crossbar and hydraulic unit. A support block 350 may be inserted between the upper part of the manufacturing unit 100 and the support unit 330. The lower part of the manufacturing unit 100 may be supported by a compensation unit 310. The portion of the support block 350 that contacts the upper part is referred to as an upper contact portion 331, and the portion of the compensation unit 310 that contacts the lower surface of the support base 315 is referred to as a lower contact portion 332. While a pair of support blocks 350 have conventionally been inserted between the support unit 330 and the manufacturing unit 100, in this embodiment, a compensation unit 310 capable of compensating for the amount of compression is provided in place of the lower support block 350.

[0082] In a structure without the compensating unit 310, when pressure is applied after inserting the closing cover into the pressure vessel and inserting support blocks into the top and bottom of the pressure vessel, the closing cover is first pressed in, deforming the lower part of the support unit, which then pressurizes the outer punch die, causing it to be pressed in again. However, in the present invention, the compensating unit 310 is provided, which prevents the closing cover from being pressed in.

[0083] FIG. 16 is a schematic diagram showing the operating principle of the support unit shown in FIGS. 1 and 2 (up, down, left and right directions are based on FIG. 16).

[0084] As shown in Figure 16, the moving direction of the moving block 311 is a linear direction parallel to the lower contact portion 332 of the support portion 330. After inserting the closing cover 120b into the pressure vessel 110 and inserting the support block 350 and the correction portion 310, rotating the insertion bolt 313 causes the moving block 311 to move in the x direction. Because the left and right sides of the moving block 311 have different heights, the height of the lower closing cover 120b changes depending on the linear movement of the moving block 311. That is, as the moving block 311 moves in the x direction (toward the withdrawal bolt), the height of the moving block 311 gradually increases, causing the lower closing cover 120b to rise in the y direction. As the lower closing cover 120b rises, the pressurization process is performed without the lower closing cover 120b being pushed too far out of the pressure vessel 110. The upper closing cover 120a on the opposite side, not adjacent to the outer punch mold 130, the ejection plate 140, and the die mold 150, may be indented due to pressure, as in the conventional method. The pressure applies a force in the opposite direction (y), causing the lower closing cover 120b to be indented. For example, if the indentation amount is constant and is measured in advance, the indentation amount can be corrected using a passive method in which the moving block 311 is moved in advance by an amount corresponding to the indentation amount. Alternatively, if the indentation amount is not constant and real-time measurement is required, the indentation amount can be corrected using an active automatic control method in which the indentation amount is monitored and the moving block 311 is moved in response to the degree of indentation. For example, the lift value (e.g., in mm) of the closing cover 120b for correcting the indentation amount can be calculated by multiplying the movement value (e.g., in mm) of the moving block 311 by sinθ (y = x × sinθ).

[0085] Meanwhile, a large amount of all-solid-state batteries can be produced by applying the structures of the above-described embodiments. Hereinafter, an all-solid-state battery, an apparatus and method for manufacturing an all-solid-state battery according to another embodiment of the present invention will be described in detail with reference to the accompanying drawings. (It is noted that in some drawings, the number of external punch dies and die dies has been reduced and simplified for ease of illustration. Also, in the apparatus for manufacturing an all-solid-state battery according to this embodiment, the manufacturing unit is supported by a support unit. The structure of the support unit is the same as in the above-described embodiment, so a detailed description thereof will be omitted. It is also noted that the reference numerals shown in FIGS. 17 to 26 apply only to the configurations shown in FIGS. 17 to 26.)

[0086] FIG. 17 is a front cross-sectional view showing an apparatus for manufacturing an all-solid-state battery according to one embodiment of the present invention, and FIG. 18 is a side cross-sectional view showing an apparatus for manufacturing an all-solid-state battery according to one embodiment of the present invention.

[0087] As shown in FIGS. 17 and 18, an apparatus 10 for manufacturing an all-solid-state battery according to an embodiment of the present invention may include a manufacturing unit 100 and a support unit 300 that supports the manufacturing unit 100.

[0088] The manufacturing unit 100 may include a pressure vessel 110 and closing covers 120a and 120b for applying pressure, an external punch mold 130 for shaping the plate-shaped material, an ejection plate 140, and a die mold 150. The support unit 300 may include a correction unit 310 for gap correction, a support unit 330 (usually called a yoke and composed of a yoke-ring and a yoke-block) that supports the manufacturing unit 100 from above and below, and a support block 350 that is inserted between the correction unit 310 and the support unit 330.

[0089] Hereinafter, the structure of the manufacturing unit and the manufacturing method of the all-solid-state battery will be described in detail.

[0090] FIG. 19 is a cross-sectional view showing a manufacturing unit of the manufacturing apparatus for the all-solid-state battery shown in FIGS. 17 and 18, and FIG. 20 is an exploded perspective view showing the main parts of the manufacturing apparatus for the all-solid-state battery shown in FIG.

[0091] 17 to 20, the manufacturing apparatus 10 for an all-solid-state battery is equipment for pressurizing a plate-shaped material 1 (see FIG. 24) that will become an electrode body of an all-solid-state battery. The manufacturing apparatus 10 may include a pressure vessel 110 for pressurizing, a pair of closing covers 120a, 120b, an outer punch mold 130 for containing and shaping the plate-shaped material 1, an ejection plate 140, and a die mold 150.

[0092] For example, the plate-shaped material 1 may include a structure in which an electrode plate for an all-solid-state battery and an electrolyte or various buffer films are laminated. That is, the plate-shaped material 1 refers to a material that needs to be densified through an ultra-high pressure pressing process. For example, the plate-shaped material 1 may include an electrode plate, an electrolyte, other films, plates, etc., for the purpose of generating a uniform pressure distribution on the upper and lower surfaces of a single or multi-layer all-solid-state battery. Conventional methods can be used to laminate the plate-shaped material 1.

[0093] As shown in FIGS. 19 and 20 , the pressure vessel 110 has a cylindrical appearance and a cylindrical internal space that runs from top to bottom. Cylindrical closing covers 120a and 120b are inserted into the upper and lower portions of the internal space. For example, the pressure vessel 110 and the closing covers 120a and 120b may be made of stainless steel. The area excluding the cover insert 114 into which the closing covers 120a and 120b are inserted may be defined as the pressure section 112. The pressure section 112 may be filled with a medium that applies ultra-high isotropic pressure to the plate-shaped material 1. In some examples, the medium may be water or oil. In some examples, the inner diameter Dc of the cover insert 114 may be larger than the inner diameter Dv of the pressure section 112. After the upper closing cover 120a is attached to the pressure vessel 110 and the outer punch mold 130 is attached inside the pressure vessel 110, the lower closing cover 120b, on which the removable die mold 150 and ejection plate 140 are mounted, may be partially housed in the pressure vessel 110, and the medium may be filled in the pressure vessel 110. Thereafter, although not shown in the drawings, a pressure pump system, in which the medium moves through a pipe installed through the closing covers 120a and 120b or the side of the pressure vessel 110, may be used to precisely control the additional supply or discharge of the medium. Thus, when the medium filled in the pressure unit 112 is compressed to a specific target pressure with the upper and lower closing covers 120a and 120b fastened, a high or ultra-high pressure for pressing the plate-shaped material 1 may be generated. For example, the pressure applied inside the pressure vessel 110 may be in the high or ultra-high pressure range of 100 MPa to 700 MPa. The plate-shaped material 1 is housed in each mold and placed in the pressure unit 112.

[0094] Figure 21 is a cutaway perspective view showing a portion of the external punch die according to Figure 20, Figure 22 is a perspective view showing the ejection plate according to Figure 20, Figure 23 is an exploded perspective view of the die die according to Figure 20, Figure 24 is a partial cross-sectional view of the die die according to Figure 23, Figure 25 is a partial cross-sectional view of the die die and external punch die according to Figure 20, and Figure 26 is a schematic diagram showing the direction of pressure applied to the main parts according to Figure 19.

[0095] 19 to 21 , the external punch mold 130 is coupled to the die mold 150 via an ejector plate 140. For example, the external punch mold 130 may be made of an elastic material such as rubber. The external punch mold 130 may include a disk-shaped base plate 132 and a plurality of mold receiving portions 134 integrally formed with the base plate 132.

[0096] The base plate 132 has a predetermined thickness and a diameter corresponding to the inner diameter of the cover inserting portion 114 and the diameter Dc of the upper and lower closing covers 120a and 120b.

[0097] The mold accommodating portions 134 extend upward from the upper surface of the base plate 132 and accommodate the die plates 154 (see FIG. 7) of the die mold 150. To this end, the mold accommodating portions 134 may have a hollow box shape and communicate with the lower surface of the base plate 132. The multiple mold accommodating portions 134 may be spaced apart by a predetermined distance so as not to overlap each other. The size and shape of the mold accommodating portions 134 may correspond to the size and shape of the die plates 154, which will be described later. The number of mold accommodating portions 134 may also correspond to the number of die plates 154.

[0098] When the external punch die 130 is inserted into the pressure vessel 110, the mold receiving portion 134 is positioned within the pressure unit 112 for pressure forming of the plate-shaped material 1. The outer side of the mold receiving portion 134 and the upper side of the base plate 132 are in contact with the medium while abutting the pressure unit 112. However, the side and lower sides of the base plate 132 may be positioned within the cover insertion portion 114. The external punch die 130 can be assembled or fixed to the pressure vessel using a conventional manufacturing method for isostatic pressing equipment. The die plate 154 of the die mold 150, which corresponds to the moving portion, is inserted and installed inside the mold receiving portion 134, which corresponds to the fixed portion, with the ejector plate 140 sandwiched between them. Thereafter, the die mold 150 and the plate-shaped material 1 are removed from the mold receiving portion 134 by pulling the ejector plate 140 and withdrawing the die mold 150. In the pressurizing process for manufacturing an all-solid-state battery proposed in the present invention, the above-mentioned pulling and pulling operations are repeated through the fixed mold receiving portion 134 in a "dry method."

[0099] 21 and 22, the ejector plate 140 is configured to pull the die 150 into and out of the external punch 130. The ejector plate 140 is disk-shaped and has a plurality of through holes 142 formed therethrough. The positions and number of the through holes 142 may correspond to the positions and number of the mold receiving portions 134 of the external punch 130. Cutting portions 144 may be formed on the lower surface of the ejector plate 140 at positions corresponding to the positions of the through holes 142. The cutting portions 144 may be tapered or stepped to correspond to the shape of the die pad portion 152 of the die 150, which will be described later. Due to the presence of the cutting portions 144, multiple die 150 can be easily separated from multiple external punch 130 at once by pulling the ejector plate 140. The ejector plate 140 provides support between the elastic outer punch die 130 and the steel closing cover 120b during compression of the plate material 1. The ejector plate 140 also provides support and cushioning between the closing cover 120b and the die 150, preventing excessive deformation of the base plate 132. The ejector plate 140 is not fixed to the pressure vessel 110 or the closing cover 120b, and is subject to repeated contact and separation during the compression process. Because the ejector plate 140 provides support and cushioning and is subject to frequent contact and separation, it may be made of a material with a predetermined durability. For example, the ejector plate 140 may be made of a material, such as steel, similar to or the same as the closing covers 120a, 120b or the die 150.

[0100] 20, 22 to 24, the die mold 150 may include a die pad portion 152, a die plate 154 having a recessed portion 154a that is filled with and supports the plate-shaped material 1, and a fixing film 156 attached to the die plate 154. The die pad portion 152 and the die plate 154 may be formed integrally or separately depending on the process characteristics or purpose. The fixing film 156 may be provided separately and attached to the die plate 154.

[0101] The die pad portion 152 is a portion that comes into close contact with the cutting portion 144 when the die mold 150 is inserted into the eject plate 140. The die pad portion 152 may be formed to a predetermined size and have a shape corresponding to the cutting portion 144. A die plate 154 is formed to extend from the upper portion of the die pad portion 152.

[0102] The die plate 154 is a rectangular parallelepiped plate having a predetermined size. A plurality of die plates 154 may be provided, each formed to correspond to the number and shape of the mold receiving portions 134 of the external punch die 130. The die plate 154 may have recessed portions 154a formed on both left and right plate surfaces as shown in FIG. 7. The recessed portions 154a are used to fill and support the plate-shaped material 1. For example, the recessed portions 154a may be formed to have a rectangular shape with a predetermined depth. The shape of the recessed portions 154a is not limited to a rectangular shape. That is, the shape of the recessed portions 154a is not limited to a specific shape as long as it has a shape and steps that basically correspond to the outer shape of the plate-shaped material. For example, a plurality of recessed portions 154a may be formed symmetrically on the left and right plate surfaces of the die plate 154. After the plate-shaped material 1 is filled into the recessed portions 154a, it is densified through a pressing process. With the plate-shaped material 1 filled in the recessed portion 154a, a fixing film 156 is attached to prevent the plate-shaped material 1 from coming off.

[0103] 23 and 24, the fixing film 156 is a film that fixes the sheet material 1 on the die plate 154, and may be fixed to the die plate 154 by a lamination method or the like. Exemplarily, the fixing film 156 may be made of a polymer material such as PE. The fixing film 156 must adhere to the die mold 150 above a certain temperature, but must maintain a release property that allows it to easily separate from the sheet material 1. Therefore, any polymer material that matches the characteristics of the lamination process may be selected and used as the fixing film 156. After the fixing film 156 is laminated, the die mold 150 is inserted into the ejector plate 140 and then inserted into the outer punch mold 130.

[0104] FIG. 25 shows an enlarged view of the recessed portion 154a when the die 150 and the external punch 130 are coupled, excluding the ejection plate 140. As shown in FIG. 25, when the die 150 and the external punch 130 are coupled, the fixed film 156 and the mold receiving portion 134 of the external punch 130 are positioned sequentially outside the sheet material 1. When the external punch 130 is inserted into the pressure vessel 110 in this state, pressure is applied to the mold receiving portion 134 of the external punch 130, as shown in FIG. 10. The applied pressure is perpendicular to the sheet surface of the mold receiving portion 134. The pressure of the medium applied to the outside of the mold receiving portion 134 causes the inside of the mold receiving portion 134 to adhere to the die plate 154, applying uniform "flat pressure" to the sheet material 1.

[0105] As described above, the pressure is applied uniformly to the entire plate surface of the mold receiving portion 134, so the pressing process of this embodiment can be defined as a planar pressing process. Although the pressure from the actual medium acts on the entire outer punch die 130, the base plate 132 is supported by the steel closing cover 120b, so no effective pressure is generated or is offset. Therefore, only the planar pressure perpendicular to the plane of the plate material 1 is effective pressure. However, because ultra-high pressure can press in and deform parts of the outer punch die 130, a structure to prevent this is required (this will be explained later).

[0106] In the above-described embodiment, the plate material 1 is accommodated in the die 150 and pressurized while inserted inside the outer punch 130, so that the plate material 1 can be pressurized in a dry manner. Therefore, the pressurizing process for the plate material is simplified compared to a wet pressurizing method, and the required process time can be shortened. In addition, because the vacuum sealing bag is replaced with a laminating film (fixed film), the cost of consumable materials can be reduced, and the manufacturing cost of the pressurizing process can be reduced.

Claims

1. A pressure vessel having a storage space formed therein for storing a medium; a pair of closing covers for opening and closing the pressure vessel; an external punch die partially or completely contained within the pressure vessel; and a die mold that is inserted into the external punch mold while containing a plurality of plate-shaped materials; The external punch mold includes a disk-shaped base plate and a mold receiving portion extending from the base plate in a plate shape to receive the die mold, a surface of the plate-shaped material, a plate surface of the die mold in which the plate-shaped material is accommodated, and a plate surface of the external punch mold in which the die mold is accommodated are parallel to each other; The external punch mold is arranged so that its outside is in contact with the medium, and the die mold is arranged between the external punch mold and the closing cover and does not contact the medium.

2. 2. The apparatus for manufacturing an all-solid-state battery according to claim 1, wherein the die mold includes: a die plate having a plate surface on which a plurality of recesses into which the plate-shaped material is inserted are formed; a die pad portion supporting the die plate; and a fixing film coupled to the die plate with the plate-shaped material inserted in the recesses; and the die plate is inserted into the mold receiving portion.

3. 3. The apparatus for manufacturing an all-solid-state battery according to claim 2, further comprising a circular ejection plate having a through hole formed therein through which the die plate is inserted, the ejection plate being disposed between the base plate of the external punch mold and the die pad portion of the die mold.

4. The apparatus for manufacturing an all-solid-state battery according to claim 3 , wherein the ejection plate includes a cutting portion on a surface facing the die pad portion, the cutting portion being cut into a shape corresponding to a shape of the die pad portion.

5. 4. The apparatus for manufacturing an all-solid-state battery according to claim 3, wherein the pressure vessel has a disk shape and includes: a pressure section in which the medium is accommodated; and cover insertion sections formed on both ends of the disk, the pressure section communicating with the pressure section and to which the closing cover is coupled.

6. 6. The apparatus for manufacturing an all-solid-state battery according to claim 5, wherein an inner diameter of the pressurizing unit is smaller than a diameter of the closing cover, and diameters of the base plate and the ejection plate correspond to a diameter of the closing cover.

7. 6. The apparatus for manufacturing an all-solid-state battery according to claim 5, wherein an inner diameter of the pressure applying portion is larger than a diameter of the closing cover, a diameter of the base plate corresponds to the inner diameter of the pressure applying portion, and a diameter of the ejection plate corresponds to a diameter of the closing cover.

8. 2. The apparatus for manufacturing an all-solid-state battery according to claim 1, further comprising: a support unit including: a correction unit disposed at a lower part of the pressure vessel and configured to push and move the closing cover toward the pressure vessel during a pressurizing step; a support block disposed at an upper part of the pressure vessel; and a support unit configured to support the correction unit and the support block.

9. 10. The apparatus for manufacturing an all-solid-state battery of claim 8, wherein the correction unit includes: a moving block disposed below the closing cover; a guide block disposed below the moving block and supporting the moving block; a support base coupled to the guide block and supporting the guide block; an insertion bolt rotatably installed on one side of the support base and moving the moving block in one direction; and an extraction bolt rotatably installed on the other side of the support base and facing the insertion bolt and moving the moving block toward the insertion bolt.

10. 10. The apparatus for manufacturing an all-solid-state battery according to claim 9, wherein an upper surface or a lower surface of the moving block is an inclined surface, and a height of the moving block decreases from an end of the moving block facing the insertion bolt to an end of the moving block facing the extraction bolt.

11. 11. The apparatus for manufacturing an all-solid-state battery according to claim 10, wherein an upper surface of the guide block is an inclined surface, and a height of the guide block increases from an end portion of the guide block facing the insertion bolt to an end portion of the guide block facing the withdrawal bolt.

12. inserting a plate-shaped material into each of the plurality of recesses of the die plate, and bonding a fixing film to the die plate; inserting the die plate into a mold receiving portion of an outer punch die; inserting the outer punch die into a pressure vessel, and inserting a lower closing cover into a lower portion of the pressure vessel so as to be in close contact with a base plate and an ejection plate of the outer punch die; Filling a medium into the pressure vessel with the upper and lower closing covers inserted into the pressure vessel, and pressurizing the medium by additionally pumping it through a pipe separately connected to the pressure vessel or the closing covers; and a step of moving a moving block to bring the lower closing cover into close contact with the pressure vessel, and performing a pressurizing process.

13. The method of claim 12, wherein the pressurizing comprises moving the moving block by an amount corresponding to a displacement of the lower closing cover pressed by the pressure during the pressurizing to compensate for the displacement.

14. The method for manufacturing an all-solid-state battery according to claim 12 , wherein a surface of the plate-shaped material, a plate surface of the die plate in which the plate-shaped material is accommodated, and a plate surface of the mold accommodating portion in which the die metal mold is accommodated are parallel to each other.

15. 15. The method for manufacturing an all-solid-state battery according to claim 14, wherein the outer punch mold is arranged so that an outer side thereof contacts the medium, and the die mold is arranged between an inner side of the outer punch mold and the closing cover and does not contact the medium.

16. a pressure vessel having a storage space formed therein for storing a medium; a pair of closing covers for opening and closing the pressure vessel; An external punch mold that is partially or entirely housed inside the pressure vessel and has a base plate and a plurality of mold housing portions that are formed as plate-like extensions from the base plate and that house the die molds; and a plurality of die molds each inserted into the mold receiving portion with a plurality of plate-shaped materials accommodated therein; a surface of the plate-shaped material, a plate surface of the die mold in which the plate-shaped material is accommodated, and a plate surface of the external punch mold in which the die mold is accommodated are parallel to each other; The external punch mold is disposed so as to contact the medium, and the die mold is disposed between the external punch mold and the closing cover and does not contact the medium.

17. The apparatus for manufacturing an all-solid-state battery according to claim 16 , wherein the plurality of mold receiving portions are arranged at intervals so as not to overlap each other.

18. 18. The apparatus for manufacturing an all-solid-state battery according to claim 17, wherein the die mold includes: a die plate having a plate surface on which a plurality of recesses into which the plate-shaped material is inserted are formed; a die pad portion supporting the die plate; and a fixing film coupled to the die plate in a state in which the plate-shaped material is inserted into the recesses; and the die plate is inserted into the mold accommodating portion.

19. 19. The apparatus for manufacturing an all-solid-state battery according to claim 18, further comprising a circular ejection plate having a plurality of through holes formed therein through which the die plate is inserted, the ejection plate being disposed between the base plate of the outer punch mold and the die pad portion of the die mold.

20. The apparatus for manufacturing an all-solid-state battery according to claim 19 , wherein the ejection plate includes a cutting portion on a surface facing the die pad portion, the cutting portion being cut into a shape corresponding to a shape of the die pad portion.

21. 20. The apparatus for manufacturing an all-solid-state battery according to claim 19, wherein the pressure vessel has a disk shape and includes: a pressure section in which the medium is accommodated; and cover insertion sections formed on both ends of the disk shape, communicating with the pressure section and to which the closing cover is coupled.

22. 22. The apparatus for manufacturing an all-solid-state battery according to claim 21, wherein an inner diameter of the pressing part is smaller than a diameter of the closing cover, and diameters of the base plate and the ejection plate correspond to a diameter of the closing cover.

23. 17. The apparatus for manufacturing an all-solid-state battery according to claim 16, further comprising: a support unit including: a correction unit disposed at a lower part of the pressure vessel and configured to push and move the closing cover toward the pressure vessel during a pressurizing step; a support block disposed at an upper part of the pressure vessel; and a support unit configured to support the correction unit and the support block.

24. 24. The apparatus for manufacturing an all-solid-state battery of claim 23, wherein the correction unit includes: a moving block disposed below the closing cover; a guide block disposed below the moving block and supporting the moving block; a support base coupled to the guide block and supporting the guide block; an insertion bolt rotatably installed on one side of the support base and moving the moving block in one direction; and an extraction bolt rotatably installed on the other side of the support base and installed to face the insertion bolt and move the moving block toward the insertion bolt.

25. 25. The apparatus for manufacturing an all-solid-state battery according to claim 24, wherein an upper surface or a lower surface of the moving block is an inclined surface, and a height of the moving block decreases from an end on a side facing the insertion bolt to an end on a side facing the extraction bolt.

26. 26. The apparatus for manufacturing an all-solid-state battery according to claim 25, wherein an upper surface of the guide block is an inclined surface, and a height of the guide block increases from an end portion of the guide block facing the insertion bolt to an end portion of the guide block facing the withdrawal bolt.

27. inserting a plate-shaped material into each of the plurality of recesses of the die plate, and bonding a fixing film to the die plate; inserting the plurality of die plates into a plurality of mold receiving portions of an outer punch die, respectively; inserting the outer punch die into the pressure vessel, and inserting a lower closing cover into the lower part of the pressure vessel so as to be in close contact with the base plate and the ejection plate of the outer punch die; Filling a medium into the pressure vessel with the upper and lower closing covers inserted into the pressure vessel, and pressurizing the medium by additionally pumping it through a pipe separately connected to the pressure vessel or the closing covers; and a step of moving a moving block to bring the lower closing cover into close contact with the pressure vessel, and performing a pressurizing process.

28. 28. The method for manufacturing an all-solid-state battery according to claim 27, wherein a surface of the plate-shaped material, a plate surface of the die plate in which the plate-shaped material is accommodated, and a plate surface of the mold accommodating portion in which the die mold is accommodated are parallel to each other.

29. 29. The method for manufacturing an all-solid-state battery according to claim 28, wherein the external punch mold is arranged so as to contact the medium, and the die mold is arranged between the external punch mold and the closing cover and does not contact the medium.

30. 28. The method of claim 27, wherein the pressing step comprises moving the moving block by an amount corresponding to a displacement of the lower closing cover pressed by the pressure during pressing.

Images