Electrode cutting device for all-solid-state battery

Abstract

The present invention relates to an electrode cutting device for an all-solid-state battery. More specifically, the electrode cutting device for an all-solid-state battery comprises: an upper-knife cutting unit including an upper-knife holder and an upper knife; an upper-knife adjustment unit positioned on one side of the upper knife; and a lower knife, wherein the lower knife comprises an electrode entrance unit and a pair of lower-knife guide units disposed at either end of the electrode entrance unit, and each of the pair of lower-knife guide units includes a first lower-knife guide formed in a protruding shape and coming into contact with the upper knife and a second lower-knife guide extending in the longitudinal direction of the lower knife.

Description

Electrode cutting device for all-solid-state batteries

[0001] The present invention relates to an electrode cutting device, and more particularly, to an electrode cutting device for an all-solid-state battery, comprising a lower guide for preventing the upper guide from being overturned by lateral pressure and a lubricating part for reducing wear of the upper guide.

[0002]

[0003] All-solid-state batteries, unlike lithium-ion batteries, utilize solid electrolytes, which have led to changes in the electrode material. Consequently, all-solid-state batteries are replacing copper (Cu) with SUS as the anode substrate to reduce reactivity with the electrolyte. While aluminum (Al) is used as the cathode substrate, SUS, the anode substrate, has a tensile strength more than three times that of Al, requiring high shear force when shearing the anode plate. However, the brittleness of the coating applied to the anode plate limits the increase in shear force. Therefore, a cutting technology for all-solid-state batteries that minimizes shear load is needed.

[0004]

[0005] The problem to be solved by the present invention is to provide an electrode cutting device for an all-solid-state battery that increases the clearance between the upper and lower layers by adjusting the upper layer through incomplete bonding of the upper layer holder and the upper layer and lateral pressure, thereby preventing detachment during electrode cutting.

[0006] Another problem to be solved by the present invention is to provide an electrode cutting device for an all-solid-state battery including a lower guide part for preventing the upper part from overturning due to lateral pressure applied to the upper part.

[0007]

[0008] According to the concept of the present invention, an electrode cutting device for an all-solid-state battery includes a top-coat cutting portion including a top-coat holder and a top-coat; a top-coat adjusting portion located on a side of the top-coat; and a bottom coat, wherein the bottom coat includes an electrode entry / exit portion and a pair of bottom-coat guide portions respectively provided at both ends of the electrode entry / exit portion, and each of the pair of bottom-coat guide portions may include a first bottom-coat guide having a protruding shape that contacts the top coat and a second bottom-coat guide extending in the longitudinal direction of the bottom coat.

[0009] According to another concept of the present invention, an electrode cutting device for an all-solid-state battery includes a top-coat cutting portion including a top-coat holder and a top-coat; a top-coat adjusting portion located on a side of the top-coat; and a bottom coat, wherein the bottom coat includes a pair of bottom-coat guide portions provided at each end thereof, each of the pair of bottom-coat guide portions including a lubricating portion, and the lubricating portion may include a first oil groove located on one surface in contact with the top coat.

[0010]

[0011] The present invention uses a lower section including lower section guides located at both ends of the lower section, so that the upper section does not overturn even when lateral pressure is applied, and the clearance between the upper section and the lower section is increased, thereby reducing detachment when the electrode is cut.

[0012] The electrode cutting device for an all-solid-state battery according to the present invention can increase the clearance between the upper and lower layers by incomplete bonding of the upper layer holder and the upper layer.

[0013]

[0014] FIG. 1 is a schematic conceptual diagram illustrating an electrode cutting device according to embodiments of the present invention.

[0015] Figure 2 is a drawing showing a front view of a lower section according to embodiments of the present invention.

[0016] FIGS. 3A and 3B are side views of a lower portion according to embodiments of the present invention.

[0017] FIG. 4 is a perspective view showing a lower portion according to embodiments of the present invention.

[0018] FIG. 5 is a drawing showing a fastening state of an electrode cutting device for an all-solid-state battery according to embodiments of the present invention.

[0019] FIG. 6 is a drawing showing a fastening state of an electrode cutting device including a stripper according to embodiments of the present invention.

[0020] Figures 7 to 9 are conceptual diagrams briefly illustrating an electrode cutting process of an electrode cutting device according to embodiments of the present invention.

[0021]

[0022] 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.

[0023] 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.

[0024] Unless otherwise specified herein, the singular may also include the plural. Furthermore, unless otherwise specified, "A or B" may mean "including A, including B, or including A and B." As used herein, "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components.

[0025] The present invention is susceptible to various modifications and takes various forms. Specific embodiments are illustrated in the drawings and described in detail herein. However, this is not intended to limit the present invention to specific disclosed forms, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention.

[0026]

[0027] Fig. 1 is a schematic conceptual diagram illustrating an electrode cutting device according to embodiments of the present invention. Referring to Fig. 1, the electrode cutting device for an all-solid-state battery may include an upper section (UK) and a lower section (LK). The upper section (UK) and the lower section (LK) may each be symmetrical with respect to a first axis (D1).

[0028] Referring to FIG. 1 and FIG. 5 described below, an electrode cutting device for an all-solid-state battery may include an upper cutting portion (UKP), a top coat adjusting portion (UKAP), and a lower coat (LK). The upper cutting portion (UKP) may include a top coat holder (UKH), a top coat (UK), and a lower coat (LK).

[0029] The UK blade, which serves as a knife for delivering electrodes, can be positioned at the top of the electrode cutting device. The UK blade can be moved up and down to contact the LK blade. The UK blade can be moved up and down along a guide. The UK blade can move up and down to cooperate with the LK blade to cut the electrode.

[0030] The topcoat (UK) can be coupled to the upper holder (UKH). The topcoat (UKH) and the topcoat (UK) can be imperfectly coupled. The imperfect coupling means that the topcoat (UK) and the topcoat (UK) are not completely tightly coupled. The incomplete coupling may be a state in which the bolts that couple the topcoat holder (UKH) and the topcoat (UK) are not completely tightened. For example, the incomplete coupling may be a state in which the bolts that couple the topcoat holder (UKH) and the topcoat (UK) are loosened once or twice in the opposite direction of the tightening direction from the fully tightened state. The topholder (UKH) and the topcoat (UK) can be coupled with bolts, and a protrusion attached to the topcoat (UK) and a hole formed in the topcoat (UK) can be coupled by contact between them.

[0031] As the top coat holder (UKH) and the top coat (UK) are incompletely joined, the top coat (UK) can be adjusted vertically with respect to the bottom coat (LK) by the top coat adjustment part (UKAP). The top coat adjustment part (UKAP) can apply lateral pressure to the side of the top coat (UK) to increase the clearance between the top coat (UK) and the bottom coat (LK). The clearance is an indication of the gap between the top coat (UK) and the bottom coat (LK).

[0032] The UK blade can have a wide width on both sides of the blade's lower edge and a narrow blade toward the center in the longitudinal direction. In other words, the blade at the bottom of the UK can form a blade that slopes upward toward the center in the longitudinal direction of the UK. The reason for this configuration may be to increase the shear angle of the part (both sides) that first comes into contact with the electrode during electrode cutting. Increasing the shear angle facilitates pressure distribution on both sides of the blade, which can prevent the electrode from being torn or damaged.

[0033] The UKL is the lowermost part of the UK and is the part that comes into contact with the LK. The UKL may be the same thickness as the UK or may be thinner than the UK. The longer the UKL, the more likely it is that the electrode will detach when cut. The UKL may be less than 1 mm long.

[0034] The lower blade (LK) is a knife that engages with the upper blade (UK) to cut the electrode and can be located at the bottom of the electrode cutting device. Unlike the upper blade (UK) that moves up and down along a guide, the lower blade (LK) can be fixed in place. Unlike the upper blade (UK), the lower blade (LK) may not be equipped with a separate lower blade holder, but this is not necessarily limited to this, and a device for fixing the lower blade (LK), such as a lower frame, can be added.

[0035] The UKH can serve to fix the UK and support the UK cutting part (UKP) so that it can slide up and down. The UKH can fix the UK while moving it up and down along a guide. The UKH can be positioned above the UK and can be larger than the UK.

[0036] The UKAP may include a UKA and a cylinder (CD). The UKAP may be positioned on the side of the UK. The lower line (LK) may be positioned on one side of the UK, and the UKA may be positioned on the other side.

[0037] The UKA can fine-tune the clearance and perpendicularity of the UK to the lower coat (LK) within tolerance. The clearance between the UK and the lower coat can be a factor affecting electrode quality. The UKA can apply lateral pressure to the side of the UK to align the UK with the lower coat (LK). The applied lateral pressure aligns the UK perpendicular to the lower coat (LK), increasing the clearance and thus increasing the electrode cutting force, which can ultimately improve electrode quality.

[0038]

[0039] Fig. 2 is a front view of a lower portion (LK) according to embodiments of the present invention. Referring to Fig. 2, the lower portion (LK) may include an electrode entry / exit portion (EA) and a pair of lower portion guide portions (LGP) provided at each end of the electrode entry / exit portion (EA). The lower portion guide portion (LGP) may include a first lower portion guide (LG1), a second lower portion guide (LG2), and a lubricant portion (LP).

[0040] The lower guide portion (LGP) may include a first lower guide (LG1) in a protruding shape that comes into contact with the upper guide (UK), a second lower guide (LG2) that extends in the longitudinal direction of the lower guide (LK), and a lubrication portion (LP). The longitudinal direction refers to the direction in which the length or width of the lower guide (LK) is longer when taken as the front in a direction parallel to the second axis (D2) of FIG. 1.

[0041] The first lower guide (LG1) may be positioned at the upper end of the lower guide portion (LGP) in contact with the upper guide (UK). The first lower guide (LG1) may be positioned at both ends of the lower guide (LK). Additionally, the first lower guide (LG1) may be present as a pair of symmetrical guides at both ends of the lower guide (LK).

[0042] The first lower guide (LG1) may be configured such that the upper guide (UK) slides along the first surface (S1) of the first lower guide (LG1). Referring to FIGS. 3a, 3b, and 5, the first surface (S1) may be a surface where the lower guide (LK) and the upper guide (UK) come into contact. The first surface (S1) of the lower guide (LK) may be in contact with the upper guide (UK). Even when the upper guide (UK) is coupled to the upper guide holder (UKH) and is positioned at the uppermost position along the first axis (D1), the first surface (S1) of the lower guide (LK) may be in contact with the upper guide (UK). The lower guide portion (LGP) of the upper guide (UK) and the lower guide (LK) may always be in contact through the first surface (S1).

[0043] The first lower guide (LG1) can push the upper guide (UK) in the opposite direction to the direction of the lateral pressure applied to the upper guide (UK) by the upper guide adjustment unit (UKAP). Accordingly, the first lower guide (LG1) can prevent the upper guide (UK) from overturning due to the lateral pressure applied to the upper guide (UK) by the upper guide adjustment unit (UKAP). The first lower guide (LG1) may be equal to the width of the lower guide (LK) or may be shorter than the width of the lower guide (LK). The width of the lower guide (LK) refers to the length in the direction parallel to the third axis (D3) based on FIG. 3.

[0044] The second lower guide (LG2) may be positioned below the first lower guide (LG1). The second lower guide (LG2) may be integral with the first lower guide (LG1) or may have a separate structure. The second lower guide (LG2) may be positioned at both ends of the lower guide (LK). In addition, the second lower guide (LG2) may be present as a pair of symmetrical shapes at both ends of the lower guide (LK).

[0045] The second lower guide (LG2) can intersect the upper guide (UK) after sliding along the first surface (S1) when the upper guide (UK) is driven up and down and intersects the lower guide (LK). That is, unlike the first lower guide (LG1), the second lower guide (LG2) does not always share the first surface (S1) and can intersect the upper guide (UK) at the point where the electrode is cut off at the end of the first surface (S1).

[0046] The first lower guide (LG1) and the second lower guide (LG2) can be formed of the same material as the lower guide (LK).

[0047] The electrode entry / exit portion (EA) may include a surface of the lower channel (LK) through which an electrode may pass between the upper channel (UK) and the lower channel (LK) for cutting the electrode. The electrode entry / exit portion (EA) may be located between the lower channel guide portions (LKP). The electrode entry / exit portion (EA) may be a passage through which an electrode to be cut enters / exits.

[0048] The lubrication unit (LP) can prevent wear that may occur when the upper layer (UK) and the lower layer (LK) slide while sharing the first surface (S1). The lubrication unit (LP) may include a first oil groove (OH1) and a second oil groove (OH2). The first oil groove (OH1) may be located on the first lower layer guide (LG1). In addition, the second oil groove (OH2) may be located on the second lower layer guide (LG2), but is not necessarily limited thereto. The first oil groove (OH1) and the second oil groove (OH2) may be located at both ends of the lower layer (LK). In addition, the first oil groove (OH1) and the second oil groove (OH2) may exist as a pair in a symmetrical shape at both ends of the lower layer (LK).

[0049] The first oil groove (OH1) can prevent wear that occurs when the first lower guide (LG1) and the upper guide (UK) share the first surface (S1) and slide together. The first oil groove (OH1) can include a lubricant to reduce friction. The lubricant can be a typical lubricant used in industrial equipment, but is not necessarily limited thereto. The shape of the first oil groove (OH1) can be an inequality shape with a curved center portion as shown in FIGS. 2 and 4, but may also have a different shape.

[0050] Referring to FIGS. 2 and 4, the first oil grooves (OH1) located in the first lower guides (LG1) located at both ends of the lower guide (LK) may be formed with grooves that are bent in the opposite direction to the electrode entrance / exit portion (EA). In order to prevent the lubricant from getting on the electrode when cutting the electrode, the first oil groove (OH1) may have a shape that protrudes in the opposite direction to the electrode entrance / exit portion (EA). The lubricant included in the first oil groove (OH1) may have a separate lubricant supply portion, but even without the lubricant supply portion, the lubricant may be temporarily supplied when the electrode is cut. The lubricant may be supplied to the first oil groove (OH1) by a method such as spray injection.

[0051] The second oil groove (OH2) may be located on the second lower guide (LG2). The second oil groove (OH2) may discharge the lubricant supplied from the first oil groove (OH1). If the second oil groove (OH2) is absent, after the lubricant supplied from the first oil groove (OH1) is completely applied to the first surface (S1), the lubricant may penetrate not only the second lower guide (LG2) but also the electrode entrance / exit portion (EA). The second oil groove (OH2) may have an elongated oval shape with upper and lower surfaces as illustrated in FIGS. 2 and 4, but is not limited to this shape and may have a circular or polygonal shape. The second oil groove (OH2) may also have the same shape as the first oil groove (OH1).

[0052] The first oil groove (OH1) and the second oil groove (OH2) may each be formed in a form that penetrates the lower guide portion (LGP). The first oil groove (OH1) may not penetrate the lower guide portion (LGP), but the second oil groove (OH2) may be formed in a form that penetrates the lower guide portion (LGP).

[0053]

[0054] Fig. 3a is a side view of a lower guide (LK) according to embodiments of the present invention. Referring to Fig. 3a, a first lower guide (LG1) may be positioned above a first axis (D1) and a second lower guide (LG2) may be positioned below it. The height ratio of the first lower guide (LG1) and the second lower guide (LG2) based on the height of the lower guide (LK) parallel to the first axis (D1) may be 3:7, 2:8, 4:6, or 5:5.

[0055] In one embodiment, the first underpass guide (LG1) and the second underpass guide (LG2) may have a boundary line as shown in FIG. 3A. In another embodiment, if the first underpass guide (LG1) and the second underpass guide (LG2) are formed as a single body, there may be no boundary line between them. The width of the first underpass guide (LG1) and the second underpass guide (LG2) may be equal to or shorter than the width of the underpass (LK). The width of the underpass guide refers to the length in the direction parallel to the third axis in FIG. 3A.

[0056] The lower tool angle (LA) refers to the angle formed by the first plane (S1) where the lower tool (LK) and the upper tool (UK) meet and the third axis (D3). The closer the lower tool angle (LA) is to 90°, the greater the clearance between the lower tool (LK) and the upper tool (UK). Accordingly, the closer the lower tool angle (LA) is to 90°, the less likely it is that electrode detachment will occur during cutting.

[0057] The first surface (S1) refers to the surface where the upper surface (UK) and the lower surface (LK) meet. The first surface (S1) may be a surface shared by the upper surface (UK) and the lower surface (LK). Referring to FIG. 3, the first surface (S1) may be located on the right side of the first axis (D1). A lubricant supplied from the first oil groove (OH1) may be applied to the first surface (S1).

[0058] FIG. 3B is a side view of a lower guide according to embodiments of the present invention. Referring to FIG. 3B, the first lower guide (LG1) and the second lower guide (LG2) may each include a first guide tool angle (GA1) and a second guide tool angle (GA2). The first guide tool angle (GA1) represents the degree to which the first surface (S1) is inclined with respect to the third axis (D3) of the first guide (LG1), as illustrated in FIG. 3B. The second guide tool angle (GA2) represents the degree to which the height of the second guide tool angle (GA2) parallel to the first axis (D1) is inclined with respect to the third axis (D3) of the second guide (LG2). The first guide tool angle (GA1) may have an angle range of 85° to 90° or 88° to 90°. Additionally, the second guide tool angle (GA2) may be in an angle range of 85° to 90° or 88° to 90°. When the first guide tool angle (GA1) is less than 90°, when the upper guide (UK) slides along the first surface (S1), the contact force between the upper guide (UK) and the lower guide (LK) increases, which may increase the clearance, and accordingly, the cutting power of the electrode cutting device may be improved.

[0059] Fig. 4 is a perspective view of a lower channel (LK) according to embodiments of the present invention. Referring to Fig. 4, an electrode entry / exit portion (EA) may be positioned between a first lower channel guide (LG1) and second lower channel guides (LG2) located at opposite ends of the lower channel (LK). The electrode entry / exit portion (EA) may be shorter than the entire length of the lower channel (LK) including the lower channel guide portion (LGP).

[0060] FIG. 5 is a drawing showing a connection state of an electrode cutting device for an all-solid-state battery according to embodiments of the present invention. Referring to FIG. 5, the electrode cutting device may include an upper cutting part (UKP), a top coat adjusting part (UKAP), and a lower coat (LK). The top coat adjusting part (UKAP) may be coupled to the upper cutting part (UKP) or may be positioned separately. The upper cutting part (UKP) may include a top coat holder (UKH) and a top coat (UK). The top coat holder (UKH) and the top coat (UK) may be integrally coupled. The top coat holder (UKH) and the top coat (UK) may be incompletely coupled. The top coat holder (UKH) coupled to the top coat (UK) may be driven up and down.

[0061] An electrode supply section (ES) may be located on the side of the lower section (LK). The electrode supply section (ES) serves to continuously supply electrodes. The electrode (EP) supplied from the electrode supply section (ES) may be cut at regular intervals by the upper cutting section (UKP) that moves up and down and the fixed lower section (LK).

[0062]

[0063] Fig. 6 is a drawing showing a fastening state of an electrode cutting device including a stripper (STP) according to embodiments of the present invention. Referring to Fig. 6, the stripper (STP) can be arranged on the lower side of the top plate holder (UKH). The stripper (STP) prevents the electrode material from easily falling off the top plate (UK) and rising upward when the top plate (UK) rises upward after cutting the electrode material. That is, the stripper (STP) is provided to extend from the top plate holder (UKH) and to be elastically slidable. This controls the electrode material to be pressed by elastic force so that it does not rise upward when the top plate holder (UKH) is raised and lowered by a conventional driving means such as a conventional hydraulic or pneumatic cylinder.

[0064] Referring to Fig. 6, the stripper (STP) may not be in close contact with the top coat (UK). To adjust this, the top coat adjuster (UKA) of Fig. 6 may apply lateral pressure. The lateral pressure applied by the top coat adjuster (UKA) to the top coat (UK) or the top coat holder (UKH) may be in the range of 0.05 MPa to 1 MPa, 0.05 MPa to 0.5 MPa, or 0.1 MPa to 0.5 MPa.

[0065]

[0066] FIGS. 7 to 9 are conceptual diagrams briefly illustrating an electrode cutting process of an electrode cutting device according to embodiments of the present invention. Referring to FIG. 7, the top plate (UK) has at least a portion of a wide and thin plate shape. As in one embodiment of the present invention, the top plate (UK) may be installed in the top plate holder (UKH) by forming an inclined edge in an upright state according to a shear angle, but is not limited thereto. The top plate (UK) may have cutting particles coated on its surface. That is, the top plate (UK) may cut the electrode in one stroke by rapidly moving downward, but is not limited thereto, and the top plate (UK) may cut the electrode by reciprocating at short intervals. The cutting particles are not limited and may be various, but are preferably particles with high hardness, such as diamond, to reduce wear even with high friction.

[0067] Referring to Fig. 7, the electrode (EP) continuously supplied from the electrode supply unit (ES) can be cut into a certain size by an electrode cutting device located on the electrode supply unit (ES).

[0068]

[0069] Fig. 8 is a front view of an electrode cutting device according to an embodiment of the present invention. Referring to Fig. 8, the upper part (UK) may have a symmetrical structure with respect to the first axis (D1), or may have an asymmetrical structure if the shear angles of the two ends are different. The second axis (D2) is orthogonal to the first axis (D1) and the third axis (D3) and is parallel to the direction parallel to the electrode (EP). The first axis (D1) passes through the centers of the upper part (UK) and the lower part (LK).

[0070] The UK moves along the first axis (D1), particularly in the up-and-down direction, and cuts the electrode (EP). At this time, since kinetic energy is proportional to the square of the speed, the UK must move at a very high speed so that its kinetic energy increases significantly and the electrode (EP) can be easily cut. If the UK is heavy, its potential energy is proportional to its weight, so when the UK is positioned upward, its potential energy is large. Therefore, even if it simply falls freely downward, the converted kinetic energy is also large, so the electrode (EP) can be easily cut. However, if the UK is light, its potential energy is not large. Therefore, it is desirable for a separate power device to increase the kinetic energy when the UK holder (UKH) moves the UK from upward to downward. Such a separate power device may include, but is not limited to, a hydraulic or pneumatic press, an electric motor, and various other devices.

[0071] Meanwhile, if the UK does not form a slope and the lower surface of the UK is arranged parallel to the electrode EP, the lower surface simply strikes the electrode EP when the UK moves downward. Then, the contact area between the lower surface of the UK and the electrode EP is relatively large, so that the kinetic energy is dispersed and the electrode EP may not be sharply cut.

[0072]

[0073] Fig. 9 is a conceptual diagram illustrating a side view of an electrode cutting device according to an embodiment of the present invention. As described above, the thin side, i.e., the lower surface, of the upper surface (UK) according to an embodiment of the present invention for cutting the electrode (EP) may be symmetrical with respect to an imaginary plane. Here, the imaginary plane is a plane that simultaneously includes a first axis (D1) and a third axis (D3), and the first axis (D1) may pass through the center of the lower surface of the upper surface (UK). In addition, as illustrated in Fig. 9, the point at which the upper surface (UK) descends and contacts the electrode may preferably be close to one end of the surface of the lower surface (LK) that supports the electrode. The normal force that the lower surface (LK) supports the electrode upward and the force that the upper surface (UK) applies to the electrode when it descends may have opposite action directions.

[0074] Referring to FIGS. 7 and 9, the lower right portion of the upper surface (UK) may be formed to be inclined. The lower portion of the upper surface (UK) may be inclined upward from the upper surface land portion (UKL) in the opposite direction of the lower surface (LK). Accordingly, when the upper surface (UK) is lowered to cut the electrode (EP), the cut electrode can move in the opposite direction of the lower surface (LK) along the third axis (D3) at the same time as being cut. Accordingly, a gap of a certain distance may be generated between the electrodes cut by the electrode cutting device.

[0075] The top coat (UK) may have a thickness of 6 mm to 10 mm in the plate-shaped portion. Conventional top coats (UK) may require a separate process, such as a cutting process, to manufacture the lower surface. However, in practice, it may not be easy to manufacture the lower surface with a width of less than 0.1 mm. However, the top coat (UK) according to one embodiment of the present invention has at least a portion of a wide plate shape, and thus can be manufactured with a thickness of less than 0.1 mm, particularly up to 0.02 mm. Therefore, the top coat (UK) may be sharper, allowing for more sharp cutting of the electrode.

[0076]

[0077] Hereinafter, the present invention will be described in more detail through examples. However, these examples are intended to exemplify the present invention and the scope of the present invention is not limited to these examples.

[0078]

[0079] Example 1

[0080] A lower plate including lower plate guides located at both ends of the lower plate was manufactured, and an electrode cutting device was manufactured to apply lateral pressure of 0.05 MPa using a top plate adjuster to cut the electrode.

[0081]

[0082] Example 2

[0083] A lower plate including lower plate guides located at both ends of the lower plate was manufactured, and an electrode cutting device was manufactured to apply 0.1 MPa of lateral pressure using a top plate adjuster to cut the electrode.

[0084]

[0085] Example 3

[0086] A lower plate including lower plate guides located at both ends of the lower plate was manufactured, and an electrode cutting device was manufactured to apply 0.2 MPa of lateral pressure using a top plate adjuster to cut the electrode.

[0087]

[0088] Example 4

[0089] A lower plate including a lower plate guide and a lubricating plate located at both ends of the lower plate was manufactured, and an electrode cutting device was manufactured to apply a lateral pressure of 0.05 MPa using a top plate regulator to cut the electrode.

[0090]

[0091] Example 5

[0092] A lower plate including a lower plate guide and a lubricating plate located at both ends of the lower plate was manufactured, and an electrode cutting device was manufactured to apply a lateral pressure of 0.1 MPa using a top plate regulator to cut the electrode.

[0093]

[0094] Example 6

[0095] A lower plate including a lower plate guide and a lubricating plate located at both ends of the lower plate was manufactured, and an electrode cutting device was manufactured to apply a lateral pressure of 0.2 MPa using a top plate regulator to cut the electrode.

[0096]

[0097] Comparative Example 1

[0098] A lower electrode without a lower guide was manufactured, and an electrode cutting device was manufactured to apply 0.05 MPa of lateral pressure using a top-level regulator to cut the electrode.

[0099]

[0100] Comparative Example 2

[0101] A lower electrode without a lower guide was manufactured, and an electrode cutting device was manufactured to apply 0.1 MPa of lateral pressure using a top-level regulator to cut the electrode.

[0102]

[0103] Comparative Example 3

[0104] A lower electrode without a lower guide was manufactured, and an electrode cutting device was manufactured to apply 0.2 MPa of lateral pressure using a top-level regulator to cut the electrode.

[0105]

[0106] Comparative Example 4

[0107] A lower plate including a lower plate guide section excluding a lubricating section at both ends of the lower plate was manufactured, and an electrode cutting device was manufactured to apply a lateral pressure of 0.05 MPa using a top plate adjuster to cut the electrode.

[0108]

[0109] Comparative Example 5

[0110] A lower plate including a lower plate guide section excluding a lubricating section at both ends of the lower plate was manufactured, and an electrode cutting device was manufactured to apply a lateral pressure of 0.1 MPa using a top plate regulator to cut the electrode.

[0111]

[0112] Comparative Example 6

[0113] A lower plate including a lower plate guide section excluding a lubricating section at both ends of the lower plate was manufactured, and an electrode cutting device was manufactured to apply 0.2 MPa of lateral pressure using a top plate regulator to cut the electrode.

[0114]

[0115] Evaluation Example 1: Detachment level during electrode cutting according to the presence or absence of a lower guide

[0116] The lateral pressure and cut surface detachment when cutting the positive or negative electrode using the electrode cutting device manufactured in Examples 1 to 3 and Comparative Examples 1 to 3 are shown in Table 1.

[0117]

[0118] Example Pressure (MPa) Detachment (μm) Example 10.05 Uncut Example 20.16 0.65 Example 30.28 9.97 Comparative Example 10.05 Uncut Comparative Example 20.11 0 3.97 Comparative Example 30.28 5.38

[0119] As shown in Table 1, it can be confirmed that the electrode cutting devices of Examples 1 to 3 have reduced cutting surface detachment compared to the electrode cutting devices of Comparative Examples 1 to 3. In particular, when comparing Examples 1 to 3, it can be confirmed that detachment decreases as the lateral pressure of the top coat adjusting unit increases. Therefore, it can be confirmed that as the lateral pressure increases, the clearance between the top coat and the bottom coat increases, thereby increasing the cutting force of the electrode cutting device and thereby improving the quality of the cutting device.

[0120] Evaluation Example 2: Detachment level during electrode cutting according to the length of the sand land

[0121] The degree of detachment when the electrode was cut using the electrode cutting device manufactured in Examples 4 to 6 and Comparative Examples 4 to 6 is shown in Table 2.

[0122]

[0123] Example Land length (mm) Detachment (μm) Example 40 Uncut Example 50 60.65 um Example 60.5 33 2.87 um Comparative Example 40 Uncut Comparative Example 50 93.58 um Comparative Example 60.5 388 um

[0124] If the lower guide section lacks a lubricant, the wear of the upper section may increase. This increased wear may shorten the replacement cycle of the upper section and reduce the clearance between the upper and lower sections, which may reduce the performance of the electrode cutting device.

[0125] Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the patent claims, the detailed description of the invention, and the attached drawings, and it is obvious that this also falls within the scope of the present invention.

Claims

1. A cutting section including a drawing holder and a drawing; A top-down adjustment unit located on the side of the top-down; and Including the lower part, The above-mentioned lower part includes an electrode entry / exit portion and a pair of lower part guide portions provided at each end of the electrode entry / exit portion, An electrode cutting device for an all-solid-state battery, wherein each of the pair of lower guide sections includes a first lower guide having a protruding shape in contact with the upper guide and a second lower guide extending in the longitudinal direction of the lower guide.

2. In paragraph 1, An electrode cutting device for an all-solid-state battery, wherein the first lower guide is configured such that the upper guide slides along the first surface of the first lower guide.

3. In paragraph 1, An electrode cutting device for an all-solid-state battery, wherein the second lower guide is configured to allow the upper guide to slide from the first lower guide.

4. In paragraph 1, The above diagram moves in the up-and-down direction, and one side of the above diagram and one side of the above diagram intersect, An electrode cutting device for an all-solid-state battery, wherein the width of the electrode entrance portion is equal to or greater than the width of the electrode.

5. In paragraph 1, The above-mentioned holder and the above-mentioned table are incompletely joined, An electrode cutting device for an all-solid-state battery, wherein the above-mentioned phase adjustment unit includes a phase adjustment device that applies lateral pressure to the side surface of the above-mentioned phase.

6. In paragraph 1, The first lower guide and the second lower guide each include a first guide tool angle and a second guide tool angle, An electrode cutting device for an all-solid-state battery, wherein the first guide tool angle is different from the second guide tool angle.

7. In paragraph 1, An electrode cutting device for an all-solid-state battery, further comprising a stripper positioned between the upper and lower electrodes and separating the electrode from the upper and lower electrodes.

8. In paragraph 1, An electrode cutting device for an all-solid-state battery, wherein the above-mentioned surface includes a surface land portion, and the surface land portion has a length of more than 0 mm and less than or equal to 1 mm.

9. In paragraph 1, An electrode cutting device for an all-solid-state battery, wherein the lateral pressure of the above-mentioned pressure regulator is 0.05 MPa to 0.5 MPa.

10. A cutting section including a drawing holder and a drawing; A top-level adjustment unit located on the side of the top-level adjustment unit; and a bottom-level adjustment unit, The above-mentioned lower part includes a pair of lower part guides provided at each end, Each of the above pair of lower guide parts includes a lubricating part, An electrode cutting device for an all-solid-state battery, wherein the lubricating part includes a first oil groove located on one surface in contact with the upper surface.

11. In paragraph 10, An electrode cutting device for an all-solid-state battery, wherein the lower guide section includes a first lower guide having a protruding shape that comes into contact with the upper guide and a second lower guide extending in the longitudinal direction of the lower guide.

12. In paragraph 10, The above lubricating part further includes a second oil groove, The above first oil groove is formed as a groove that is curved in the opposite direction to the direction toward the electrode entrance / exit, An electrode cutting device for an all-solid-state battery, wherein the second oil groove is formed as a polygonal or circular groove.

13. In paragraph 11, An electrode cutting device for an all-solid-state battery, wherein the first lower guide is configured such that the upper guide slides along the first surface of the first lower guide.

14. In paragraph 11, An electrode cutting device for an all-solid-state battery, wherein the second lower guide is configured to allow the upper guide to slide from the first lower guide.

15. In paragraph 10, The above-mentioned holder and the above-mentioned table are incompletely joined, An electrode cutting device for an all-solid-state battery, wherein the above-mentioned phase adjustment unit includes a phase adjustment device that applies lateral pressure to the side of the phase.

16. In paragraph 11, The first lower guide and the second lower guide each include a first guide tool angle and a second guide tool angle, An electrode cutting device for an all-solid-state battery, wherein the first guide tool angle is different from the second guide tool angle.

17. In paragraph 10, An electrode cutting device for an all-solid-state battery, further comprising a stripper positioned between the upper and lower layers and separating the electrode from the upper layer.

18. In paragraph 10, An electrode cutting device for an all-solid-state battery, wherein the above-mentioned surface includes a surface land portion, and the surface land portion has a length of 0.5 mm to 5 mm.

19. In paragraph 10, An electrode cutting device for an all-solid-state battery, wherein the lateral pressure of the above-mentioned pressure regulator is 0.05 MPa to 0.5 MPa.

20. In paragraph 10, An electrode cutting device for an all-solid-state battery, wherein the upper and lower surfaces move in an up-and-down direction and one surface of the upper surface and one surface of the lower surface intersect.

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