Water spraying device and electrode drying device including same

Abstract

The present invention relates to a water spraying device and an electrode drying device including same. A water spraying device of the present invention comprises: a base part: a spray part including at least one spray nozzle for spraying a fluid; and an adjustment part which couples the spray part to the base part and linearly moves and rotates the spray part relative to the base part, wherein the spray nozzle is configured to be moved in horizontal and vertical directions or to be rotated while forming an arc, by the adjustment part.

Description

Water spraying device and electrode drying device including the same

[0001] The present invention relates to a water spraying device and an electrode drying device including the same, and more particularly, to a device capable of minimizing a thermal wrinkling phenomenon that may occur during the process of drying an electrode sheet.

[0002] This application claims the benefit of priority to Republic of Korea Patent Application No. 10-2023-0191015, dated December 26, 2023, and all contents of the document in said Korean patent application are incorporated herein by reference.

[0003]

[0004] Types of secondary batteries widely used today include lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-hydrogen batteries, and nickel-zinc batteries.

[0005] Secondary batteries of this type are typically formed by housing the electrode assembly and electrolyte within a battery case.

[0006] Here, the electrode assembly is generally formed as a jelly-roll type assembly having a structure in which a separator is interposed between long sheet-shaped positive and negative electrodes and then rolled up, a stack type assembly having a structure in which rectangular positive and negative electrodes are laminated with a separator interposed between them, a stack-folding type assembly in which unit cells are rolled up by a long separator film, or a lamination-stack type assembly in which battery cells are laminated with a separator interposed between them and attached to each other.

[0007] In addition, in addition to the commonly used liquid electrolyte, the electrolyte may also be replaced with a solid electrolyte or a gel-type semi-solid electrolyte that has an intermediate state between a liquid and a solid by adding an additive to the solid electrolyte.

[0008] The electrode assembly as described above is housed in a battery case, and depending on the type of battery case, it can be classified into a cylindrical battery and a square battery in which the electrode assembly is housed in a cylindrical or square metal can, and a pouch-type battery in which the electrode assembly is housed in a pouch-type case made of an aluminum laminate sheet.

[0009] Meanwhile, a method for manufacturing an electrode of such a secondary battery involves a process of dispersing an active material, a conductive material, a binder, etc. in a solvent to produce a slurry, applying it to an electrode current collector, and drying it.

[0010] At this time, as a method of drying the electrode, there is a method of drying the electrode sheet manufactured in sheet form by putting it in a drying device in a rolled state, but in this case, since the drying process is carried out in an overlapping state, there is a problem that there is a difference in the degree of drying between the inside and outside.

[0011] Therefore, conventionally, an electrode sheet is passed through an oven with an empty interior, and a drying device within the oven is operated to dry the passing electrode sheet.

[0012] However, if drying is performed in the above manner, excessive heat may be transferred to areas where slurry is not applied, which may cause thermal wrinkles.

[0013] In the past, various attempts were made to solve the problem of thermal wrinkles occurring in the non-coated portion of the electrode sheet where slurry was not applied, but no significant effect was seen.

[0014] [Prior Art Literature]

[0015] Korean Patent Publication No. 10-2023-0067927

[0016]

[0017] Accordingly, the present invention was created to solve the above problems, and the purpose of the present invention is to provide a device that can minimize the thermal wrinkle phenomenon that may occur during the process of drying an electrode sheet.

[0018] Other objects and advantages of the present invention can be understood through the following description and will be more clearly understood through the embodiments of the present invention. Furthermore, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims.

[0019]

[0020] According to the present invention, a water spraying device is provided, comprising: a base part; a spraying part including at least one spray nozzle for spraying a fluid; and a control part that connects the spraying part to the base part and moves the spraying part linearly and rotationally around the base part; wherein the spraying nozzle is configured to move in horizontal and vertical directions or rotate in an arc by the control part.

[0021] The above-mentioned injection unit may include a support bar extending in a horizontal direction; a support plate extending along the length of the support bar and having both ends bent; and a spray nozzle coupled to the support bar.

[0022] A plurality of spray nozzles are combined on the above-mentioned one support bar, and the spray nozzles can be arranged to be spaced apart at a predetermined interval along the length direction of the support bar.

[0023] The above support plate can be connected at both ends with the two ends of the support bar at the bent ends.

[0024] The above control unit may include a pair of connecting members that are connected to both ends of the support plate; and a support that connects each of the connecting members and the base plate.

[0025] The above connecting member may include a slit formed to extend in a vertical direction, and the support plate may include a first fixing pin and a second fixing pin configured at both ends to be insertable into the slit of the connecting member.

[0026] The slit may include a vertical movement slit extending in a straight line shape and a circular movement slit extending in an arc shape, and the connecting member may include a first connecting member located on one side of the support plate and including the vertical movement slit; and a second connecting member located on the other side of the support plate and including the circular movement slit.

[0027] The support member may include a first support member that is axially connected to the first connecting member; and a second support member that is connected to the second connecting member; wherein the second support member includes a main slit that extends in a vertical direction, and the second connecting member may include a third fixing pin that is configured to be insertable into the main slit of the second support member.

[0028] The above support plate is guided by the vertical movement slit of the first connecting member and the main slit of the second support member to move in the up-and-down direction, and is guided by the circular movement slit of the second connecting member to rotate around the rotation axis.

[0029] The base plate includes a guide rail extending along the width direction at the upper portion, and the support member can be coupled to the guide rail so as to be slidable in the width direction of the base plate.

[0030] One spray nozzle included in the spray unit is connected to a water pipe through which water is supplied and an air pipe through which air is supplied, and the spray nozzle may further include a control valve for controlling the fluid flow of the water pipe and the air pipe.

[0031] According to the present invention, an electrode drying device for drying an electrode sheet is provided.

[0032] The electrode drying device is characterized by including an oven body including a sheet entrance opening through which an electrode sheet passes; and a water spraying device according to claim 1 for spraying either water or air onto an electrode sheet passing through the sheet entrance opening within the oven body.

[0033] The above oven body may further include a drying unit that transmits high temperature heat to the electrode sheet to dry the electrode sheet.

[0034] The above drying unit may include at least one of an infrared tube emitting infrared rays and a hot air nozzle emitting hot air.

[0035]

[0036] According to the present invention, the electrode sheet can be effectively dried.

[0037] In addition, according to the present invention, the thermal wrinkling phenomenon of the electrode sheet can be minimized, thereby improving the efficiency of the process.

[0038]

[0039] Figure 1 is a perspective view of the water injection device of the present invention.

[0040] Figure 2 is another perspective view of the water injection device of the present invention.

[0041] Figure 3 is a plan view and a front view of the water spray device of the present invention.

[0042] Figure 4 is a perspective view of the spraying unit and the control unit included in the water spraying device of the present invention.

[0043] Fig. 5 is another perspective view of the spraying unit and the control unit included in the water spraying device of the present invention.

[0044] Figure 6 is a side view of one side of the spraying unit and the control unit included in the water spraying device of the present invention.

[0045] Figure 7 is a side view of the other side of the spraying unit and the control unit included in the water spraying device of the present invention.

[0046] Figure 8 is an exemplary diagram showing the vertical movement of the injection unit and the control unit included in the water injection device of the present invention.

[0047] Fig. 9 is a perspective view showing the movement of the injection unit and control unit of Fig. 8.

[0048] Fig. 10 is another perspective view showing the movement of the injection unit and control unit of Fig. 8.

[0049] Fig. 11 is an exemplary diagram showing the rotational movement of the injection unit and the control unit included in the water injection device of the present invention.

[0050] Fig. 12 is another exemplary diagram showing the rotational movement of the injection unit and the control unit included in the water injection device of the present invention.

[0051] Fig. 13 is a side view showing the rotational movement of the injection unit and the control unit included in the water injection device of the present invention.

[0052] Fig. 14 is a plan view of a water injection device showing horizontal movement of the injection unit and control unit of the present invention.

[0053] Fig. 15 is a perspective view of a spray nozzle included in the spray unit of the present invention.

[0054] Fig. 16 is an exemplary diagram showing the operation of the water injection device of the present invention.

[0055] Fig. 17 is another exemplary diagram of the operation of the water injection device of the present invention.

[0056] Fig. 18 is another exemplary diagram of the operation of the water injection device of the present invention.

[0057] Fig. 19 is a perspective view of the electrode drying device of the present invention.

[0058] Figure 20 is a schematic diagram simply showing a drying unit included in the electrode drying device of the present invention.

[0059]

[0060] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concept of a term to best explain his or her invention, they should be construed as meanings and concepts consistent with the technical spirit of the present invention.

[0061] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0062] In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0063] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or schematically illustrated for clearer explanation. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes or proportions.

[0064] In the present invention, “slit” refers to a general term for a through hole having a long axis in one direction and a short axis in a direction perpendicular to the long axis, and includes cases where the shape is rectangular, oval, or bead-shaped.

[0065]

[0066] The present invention relates to a water spraying device and an electrode drying device including the same. The water spraying device of the present invention is capable of selectively spraying water and air, and a spray nozzle included in the water spraying device of the present invention is configured to be freely movable.

[0067] FIGS. 1 to 18 relate to a water spraying device of the present invention, and FIGS. 19 and 20 relate to an electrode drying device of the present invention.

[0068] Hereinafter, specific embodiments of a water spray device and an electrode drying device including the same according to the present invention will be described in detail with reference to the attached drawings. For reference, the directions of front / back, up / down / left / right, etc. used to designate relative positions in the following description are intended to aid understanding of the invention, and unless otherwise specified, the directions depicted in the drawings are taken as a reference.

[0069]

[0070] Here, the longitudinal direction of an object refers to the direction of the axis that has the longer length among the horizontal and vertical axes of the object. Furthermore, the width direction of an object refers to the direction of the axis that has the shorter length among the horizontal and vertical axes of the object.

[0071]

[0072] Water spray device (1000)

[0073] Fig. 1 is a perspective view of a water spray device (1000) of the present invention, Fig. 2 is another perspective view of the water spray device (1000) of Fig. 1 viewed from a different direction, and Fig. 3 is a plan view and a front view of the water spray device (1000) of the present invention. (However, Fig. 3 has a part of the base plate (110) cut away for ease of understanding.)

[0074] The water spraying device (1000) of the present invention includes a base, a spraying unit (200), and a control unit (300) as shown in FIGS. 1 to 3.

[0075]

[0076] The above base part includes a base plate (110) that serves to support the lower part of the injection part (200) and the control part (300).

[0077] The above base plate (110) can be formed in various shapes, and may be in the shape of a basket with the edges bent upward as shown in FIGS. 1 to 3.

[0078] A separate drain hole (112) may be formed at the bottom of the above base plate (110) through which liquid such as water can be discharged.

[0079] The above base plate (110) includes a pair of guide rails (111) extending along the width direction of the base plate (110) at the upper portion.

[0080] The above injection unit (200) and control unit (300) are coupled to the base plate (110) through the guide rail (111).

[0081]

[0082] FIG. 4 is a perspective view of a spray unit (200) and a control unit (300) included in a water spray device (1000) of the present invention, FIG. 5 is another perspective view of a spray unit (200) and a control unit (300) included in a water spray device (1000) of the present invention, FIG. 6 is a side view of one side of a spray unit (200) and a control unit (300) included in a water spray device (1000) of the present invention, and FIG. 7 is a side view of the other side of a spray unit (200) and a control unit (300) included in a water spray device (1000) of the present invention.

[0083] The above injection unit (200) includes at least one injection nozzle (210) that injects a fluid.

[0084] The above-described injection unit (200) includes a support bar (220), a support plate (230), and a spray nozzle (210). More specifically, the injection unit (200) includes a support bar (220) extending in a horizontal direction, a support plate (230) extending along the longitudinal direction of the support bar (220) and having both ends bent, and a spray nozzle (210) coupled with the support bar (220).

[0085] A plurality of spray nozzles (210) are coupled to the above-mentioned one support bar (220) as shown in FIGS. 1 to 5. Specifically, the auxiliary nozzles are arranged at a predetermined interval along the length direction of the support bar (220).

[0086] The above-mentioned spray nozzle (210) is coupled to the support bar (220) so as to be fixed without shaking on the support bar (220). Therefore, the above-mentioned spray nozzle (210) and the support bar (220) may be manufactured as an integral part.

[0087] The above-mentioned spray nozzle (210) sprays fluid supplied from the outside through an opened portion, and at this time, the fluid is introduced into the spray nozzle (210) through a moving pipe connected to one side of the spray nozzle (210).

[0088] The above support plate (230) serves to support the above support bar (220).

[0089] As shown in Fig. 4, the support plate (230) is connected to both ends of the support bar (220) at the bent ends. Accordingly, each spray nozzle (210) connected to the support bar (220) moves in conjunction with the movement of the support plate (230). That is, it is possible to adjust the spray position of the fluid sprayed through the spray nozzle (210) by moving the support plate (230).

[0090]

[0091] The above-mentioned control unit (300) connects the injection unit (200) to the base unit and functions to move the injection unit (200) linearly and rotationally around the base unit. That is, the above-mentioned control unit (300) is a portion directly connected to the guide rail (111) of the base plate (110).

[0092] The above-described control unit (300) includes a connecting member (310) and a support member (320) as illustrated in FIGS. 1 to 7. More specifically, the control unit (300) includes a pair of connecting members (310) that are coupled to both ends of the support plate (230) and a support member (320) that couples each of the connecting members (310) and the base plate (110).

[0093] The above connecting member (310) includes a first connecting member (310a) located on one side of the support plate (230) and a second connecting member (310b) located on the other side of the support plate (230).

[0094] In addition, the support (320) includes a first support (320a) coupled to the first connecting member (310a) and a second support (320b) coupled to the second connecting member (310b).

[0095]

[0096] The above connecting member (310) includes a slit formed to extend in the vertical direction. The supporting plate (230) and the connecting member (310) are connected through the slit. Specifically, the supporting plate (230) includes a fixing pin configured to be insertable into the slit of the connecting member (310) at both ends. More specifically, the fixing pin is included in the outer end of the supporting plate (230), i.e., the surface facing the connecting member (310).

[0097] The above fixed pin has a protruding shape so that it can be inserted into the slit of the connecting member (310).

[0098] The above fixed pin is configured to be guided and moved in the slit shape. Accordingly, the support plate (230) moves in conjunction with the fixed pin as it is guided and moved in the slit of the connecting member (310).

[0099] The slit of the above connecting member (310) includes a vertical movement slit (S1) extended in a straight line shape and an arc movement slit (S2) extended in an arc shape.

[0100] A pair of connecting members (310) arranged on both sides of the above support plate (230) each include slits of different shapes.

[0101] Specifically, the first connecting member (310a) includes a vertical movement slit (S1) as shown in FIG. 6, and the second connecting member (310b) includes an arc movement slit (S2) as shown in FIG. 7.

[0102] More specifically, the first connecting member (310a) includes a pair of vertical moving slits (S1) that are spaced apart from each other and formed in parallel, and the second connecting member (310b) includes a pair of circular moving slits (S2) that are spaced apart from each other in a symmetrical manner.

[0103] The fixing pin of the above support plate (230) includes a first fixing pin (P1) inserted into the vertical movement slit (S1) of the first connecting member (310a) and a second fixing pin (P2) inserted into the circular movement slit (S2) of the second connecting member (310b).

[0104] Accordingly, the first fixed pin (P1) inserted into the vertical movement slit (S1) is configured to be able to reciprocate only in the vertical direction, and the second fixed pin (P2) inserted into the circular movement slit (S2) is configured to be able to reciprocate while drawing an arc.

[0105] The first support member (320a) is axially coupled with the first connecting member (310a). Therefore, the first connecting member (310a) is configured to be rotatable around the rotation axis (Ax), which is the portion coupled with the first support member (320a).

[0106] The second support member (320b) includes a main slit (S3) extending in the vertical direction, and the second connecting member (310b) is coupled to the second support member (320b) through the main slit (S3). Specifically, the second connecting member (310b) includes a third fixing pin (P3) configured to be insertable into the main slit (S3) of the second support member (320b), on one surface facing the main slit (S3), and the second connecting member (310b) is coupled to the second support member (320b) as the third fixing pin (P3) is inserted into the main slit (S3).

[0107]

[0108] The spray nozzle (210) of the present invention is characterized in that it is configured to move in horizontal and vertical directions or rotate in an arc by the control unit (300).

[0109] FIG. 8 is an exemplary diagram showing the vertical movement of the spray unit (200) and the control unit (300) included in the water spray device (1000) of the present invention, FIG. 9 is a perspective view showing the movement of the spray unit (200) and the control unit (300) of FIG. 8, and FIG. 10 is another perspective view showing the movement of the spray unit (200) and the control unit (300) of FIG. 8.

[0110] The above support plate (230) is guided by the vertical movement slit (S1) of the first connecting member (310a) and the main slit (S3) of the second support (320b) to move in the up-and-down direction, as shown in FIGS. 8 to 10.

[0111] Specifically, when the support plate (230) is moved upward as illustrated in FIGS. 8 and 9, only the second connecting member (310b) moves upward together with the support plate (230). Specifically, the second connecting member (310b) connected to one side of the support plate (230) moves upward with respect to the second support member (320b), and at the same time, the other side of the support plate (230) moves directly upward with respect to the first connecting member (310a). At this time, since the first connecting member (310a) is axially coupled with the first support member (320a), its vertical movement is limited.

[0112] Conversely, when the support plate (230) is moved downward as shown in FIGS. 8 and 10, only the second connecting member (310b) moves downward together with the support plate (230). Specifically, the second connecting member (310b) connected to one side of the support plate (230) moves downward with respect to the second support member (320b), and at the same time, the other side of the support plate (230) moves directly downward with respect to the first connecting member (310a). At this time, since the first connecting member (310a) is axially coupled with the first support member (320a), its vertical movement is limited.

[0113] The above support plate (230) moves in the up-and-down direction by the movement of the first fixing pin (P1) configured to be slidable in the vertical movement slit (S1) of the first connecting member (310a).

[0114] The second connecting member (310b) moves in the up-and-down direction by the movement of the third fixing pin (P3) configured to be slidable in the main slit (S3) of the second support (320b) as shown in FIG. 8.

[0115] Therefore, when adjusting the height of the injection nozzle (210), the support plate (230) and the second connecting member (310b) coupled to one side of the support plate (230) are moved simultaneously.

[0116]

[0117] FIG. 11 is an exemplary view showing the rotational movement of the spray unit (200) and the control unit (300) included in the water spray device (1000) of the present invention, FIG. 12 is another exemplary view showing the rotational movement of the spray unit (200) and the control unit (300) included in the water spray device (1000) of the present invention, and FIG. 13 is a side view showing the rotational movement of the spray unit (200) and the control unit (300) included in the water spray device (1000) of the present invention.

[0118] The above support plate (230) is guided to the circular movement slit (S2) of the second connecting member (310b) as shown in FIGS. 11 to 13 and rotates around the rotation axis (Ax).

[0119] Specifically, when the support plate (230) is rotated as shown in FIGS. 11 to 13, only the first connecting member (310a) rotates together with the support plate (230).

[0120] The third fixing pin (P3) included on one side of the support plate (230) is inserted into the vertical movement slit (S1) of the first connecting member (310a), so that its rotational movement is restricted. In addition, the second connecting member (310b) connected to the other side of the support plate (230) is restricted from rotational movement because the third fixing pin (P3) is inserted into the main slit (S3).

[0121] However, since the other side of the support plate (230) has the second fixing pin (P2) inserted into the circular movement slit (S2), the second fixing pin (P2) rotates in conjunction with sliding the circular movement slit (S2). At this time, the second fixing pin (P2) inserted into one of the pair of circular movement slits (S2) slides upward, and the second fixing pin (P2) inserted into the other slides downward.

[0122] In addition, the first connecting member (310a) is axially coupled with the first support member (320a), so it rotates together with the support plate (230) around the rotation axis (Ax).

[0123] That is, the support plate (230) rotates by the movement of the second fixed pin (P2) configured to be slidable in the circular movement slit (S2) of the second connecting member (310b) and the rotation of the first connecting member (310a) that rotates by the rotation axis (Ax) of the first support (320a).

[0124] Therefore, when adjusting the tilted angle of the spray nozzle (210), the support plate (230) and the first connecting member (310a) coupled to one side of the support plate (230) are rotated simultaneously.

[0125]

[0126] Fig. 14 is a plan view of a water injection device (1000) showing horizontal movement of the injection unit (200) and the control unit (300) of the present invention.

[0127] The above base plate (110) includes a guide rail (111) extending along the width direction on the upper portion as shown in FIGS. 1 to 3 and FIG. 14. More specifically, the base plate (110) includes a pair of guide rails (111) corresponding to both ends of the support plate (230).

[0128] The above support (320) is coupled to the guide rail (111) so as to be slidable in the width direction of the base plate (110).

[0129] Accordingly, the support plate (230) slides horizontally in dependence on the support (320) together with the connecting members (310) connected on both sides.

[0130]

[0131] Fig. 15 is a perspective view of a spray nozzle (210) included in the spray unit (200) of the present invention.

[0132] The water spray device (1000) of the present invention can selectively spray water and air through a single spray nozzle (210). That is, the spray nozzle (210) of the present invention can be connected to at least two or more moving pipes through which fluid is supplied, and one spray nozzle (210) can selectively spray fluids supplied through the plurality of moving pipes.

[0133] One spray nozzle (210) included in the above spray unit (200) is connected to a water pipe (240a) through which water is supplied and an air pipe (240b) through which air is supplied, as shown in FIG. 15.

[0134] The above spray nozzle (210) further includes a control valve (not shown) that controls the fluid flow of the water pipe (240a) and the air pipe (240b), and the spray pattern of water and air can be controlled by operating the control valve.

[0135] Figure 16 is an exemplary diagram illustrating the operation of the water injection device (1000) of the present invention.

[0136] According to Fig. 16, the control valves of all spray nozzles (210) are operated so that only the water pipe (240a) is connected, and thus only water is sprayed from each spray nozzle (210). In this case, the humidity can be increased by increasing the amount of moisture in the space where the water spray device (1000) is located.

[0137] Fig. 17 is another exemplary diagram of the operation of the water injection device (1000) of the present invention.

[0138] According to Fig. 17, the control valves of all spray nozzles (210) are operated so that only the air pipe (240b) is connected, and thus only air is sprayed to each spray nozzle (210). In this case, if the moisture content in the space where the water spray device (1000) is located is too high, the humidity can be lowered by increasing the amount of air sprayed.

[0139] Fig. 18 is another exemplary diagram for the operation of the water injection device (1000) of the present invention.

[0140] According to Fig. 17, some of the multiple spray nozzles (210) have their control valves operated so that only the water pipe (240a) is connected, and the rest have their control valves operated so that only the air pipe (240b) is connected. In this case, the amount of water and air injected through a single water injection device (1000) can be finely adjusted to more sensitively control humidity.

[0141]

[0142] Electrode drying device (1)

[0143] Fig. 19 is a perspective view of the electrode drying device (1) of the present invention.

[0144] The electrode drying device (1) of the present invention performs the function of drying a transported electrode sheet (Sh).

[0145] The above electrode sheet (Sh) specifically includes a sheet-shaped current collector and an electrode slurry applied on the current collector.

[0146] The above electrode slurry is included on the upper part of the electrode sheet (Sh) in FIG. 19.

[0147] The electrode drying device (1) includes an oven body (2000) and a water spray device (1000) as illustrated in Fig. 19. In addition, the electrode drying device (1) of the present invention further includes a drying unit (3000) that transmits high-temperature heat to the electrode sheet (Sh) to dry the electrode sheet (Sh).

[0148] The drying unit (3000) specifically serves to dry the electrode slurry contained on the upper portion of the electrode sheet (Sh). Therefore, the drying unit (3000) is preferably located on the upper portion of the electrode sheet (Sh) within the oven body (2000).

[0149] Figure 20 is a schematic diagram simply showing a drying unit (3000) included in the electrode drying device (1) of the present invention.

[0150] The above drying unit (3000) may be applied in various types, and may include at least one of an infrared tube emitting infrared rays and a hot air nozzle emitting hot air, as shown in FIG. 20.

[0151] The above oven body (2000) includes a sheet entrance (E) opened to allow an electrode sheet (Sh) to pass through.

[0152] The above sheet entrances (E) are formed on the oven body (2000) so as to face each other, and the electrode sheet (Sh) transferred in one direction is transferred through the sheet entrance (E) formed on one side of the oven body (2000) to the sheet entrance (E) on the opposite side.

[0153] The above water spray device (1000) directly controls the humidity within the oven body (2000) to control the environment in which the electrode sheet (Sh) dries, and also performs the function of cooling the electrode sheet (Sh) by directly spraying water or air onto it.

[0154] That is, the water spray device (1000) directly sprays either water or air onto the electrode sheet (Sh) passing through the sheet entrance (E) to prevent heat wrinkles from being formed when excessive heat is transferred to a portion of the electrode sheet (Sh) by the drying unit (3000), etc.

[0155] At this time, the area where the above thermal wrinkles may occur may vary depending on the size and type of the electrode sheet (Sh) and the output and type of the drying unit (3000). Therefore, the position where the water and air are intensively sprayed must be adjusted each time, but since the electrode drying device (1) of the present invention can move the spray nozzle (210) in all directions, the spraying direction can be freely controlled.

[0156] For example, the support plate (230) of the water spray device (1000) can be moved up and down to adjust the spray range of the fluid directed toward the electrode sheet (Sh). In addition, the support plate (230) can be rotated or moved horizontally to spray the fluid intensively on a portion of the electrode sheet (Sh).

[0157]

[0158] The present invention has been described in more detail through drawings and examples. However, the configurations described in the drawings or examples described in this specification are merely embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

[0159] [Explanation of symbols]

[0160] 1: Electrode drying device

[0161] 1000: Water spray device

[0162] 2000: Oven body

[0163] 3000: Drying unit

[0164] 110: Base Plate

[0165] 111: Guide rail

[0166] 112: Drain hole

[0167] 200: Injection part

[0168] 210: Injection nozzle

[0169] 220: Support bar

[0170] 230: Support plate

[0171] 240a: Water pipe

[0172] 240b: Air pipe

[0173] 300: Control Unit

[0174] 310: Connecting member

[0175] 310a: First connecting member

[0176] 310b: Second connecting member

[0177] 320: Support

[0178] 320a: First support

[0179] 320b: Second support

[0180] S1: Vertical moving slit

[0181] S2: Arc-moving slit

[0182] S3: Main slit

[0183] P1: First fixed pin

[0184] P2: Second fixed pin

[0185] P3: Third fixed pin

[0186] Ax: axis of rotation

[0187] Sh: Electrode sheet

[0188] E: Seat entrance

Claims

1. Base section; an injection unit comprising at least one injection nozzle for injecting a fluid; and A control unit that connects the injection unit to the base unit and moves the injection unit linearly and rotationally around the base unit; A water spray device characterized in that the spray nozzle is configured to move in horizontal and vertical directions or rotate in an arc by the control unit.

2. In paragraph 1, The above injection part, A support bar formed by extending horizontally; A support plate extending along the longitudinal direction of the above support bar and having both ends bent; and A water spraying device comprising a spray nozzle coupled with the above support bar.

3. In paragraph 2, A plurality of spray nozzles are combined on the above one support bar, A water spray device in which the above spray nozzles are arranged at a predetermined interval along the length direction of the support bar.

4. In paragraph 2, The above support plate is a water spraying device in which the bent ends are connected to the two ends of the support bar.

5. In paragraph 2, The above control unit, A pair of connecting members that are joined to both ends of the above support plate; and A water injection device including a support that connects each of the above connecting members and the base plate.

6. In paragraph 5, The above connecting member includes a slit formed to extend in the vertical direction, A water injection device wherein the support plate includes a first fixing pin and a second fixing pin, each of which is configured to be insertable into a slit of the connecting member at both ends.

7. In paragraph 6, The above slit includes a vertical movement slit extended in a straight line shape and a circular movement slit extended in an arc shape, The above connecting member is, A first connecting member positioned on one side of the support plate and including the vertical moving slit; and A water injection device comprising a second connecting member positioned on the other side of the support plate and including the circular moving slit; 8. In paragraph 7, The above support is, A first support member that is axially connected to the first connecting member; and A second support member coupled with the second connecting member; The second support includes a main slit formed to extend in the vertical direction, A water injection device wherein the second connecting member includes a third fixing pin configured to be insertable into the main slit of the second support.

9. In paragraph 8, A water injection device in which the support plate is guided by the vertical movement slit of the first connecting member and the main slit of the second support member to move in the up and down direction, and is guided by the circular movement slit of the second connecting member to rotate around the rotation axis.

10. In paragraph 5, The above base plate includes a guide rail extending along the width direction at the upper portion, The above support is a water spraying device coupled to the guide rail so as to be slidable in the width direction of the base plate.

11. In paragraph 1, One spray nozzle included in the above spray section is connected to a water pipe through which water is supplied and an air pipe through which air is supplied. A water spray device wherein the above spray nozzle further includes a control valve for controlling the fluid flow of the water pipe and the air pipe.

12. An electrode drying device for drying an electrode sheet, An oven body including a sheet inlet opening through which an electrode sheet is passed; and An electrode drying device characterized by including a water spraying device according to claim 1 for spraying either water or air onto an electrode sheet passing through the sheet inlet / outlet within the oven body.

13. In paragraph 12, An electrode drying device wherein the oven body further includes a drying unit that transmits high temperature heat to the electrode sheet to dry the electrode sheet.

14. In paragraph 13, The above drying unit is an electrode drying device including at least one of an infrared tube emitting infrared rays and a hot air nozzle emitting hot air.

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