Electrode manufacturing apparatus and electrode manufacturing method

Abstract

An electrode manufacturing apparatus according to one embodiment of the present invention includes a box-shaped cast having an internal space for accommodating an electrode slurry and a current collector, an electrode slurry inlet for injecting the electrode slurry into the internal space, and a current collector inlet for injecting the current collector into the internal space, and a heat source configured to heat the cast to dry the electrode slurry filled inside the cast, wherein the current collector inlet is located at the center of a first surface of the cast on which the current collector inlet is formed in order to layer the electrode slurry on both sides of the current collector, and the cast is configured to press the electrode slurry toward the current collector to roll the electrode slurry layered on both sides of the current collector.

Description

Technical Field

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0116626, filed on September 4, 2023.

[0002] The present invention relates to an apparatus and a method for manufacturing an electrode for a lithium secondary battery, and more particularly, to an apparatus and a method for manufacturing an ultra-high loading electrode.

Background Art

[0003] As the technology development and demand for mobile devices increase, the demand for secondary batteries as an energy source has been rapidly increasing. In recent years, the use of secondary batteries as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs) has been realized. Therefore, among such secondary batteries, there is a high demand for lithium secondary batteries with high energy density, high discharge voltage, and output stability.

[0004] In particular, lithium secondary batteries used as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs) are required to have characteristics that can exhibit a large output in a short time along with high energy density.

[0005] Generally, a lithium secondary battery is manufactured by using substances capable of inserting and extracting lithium ions as the negative electrode and the positive electrode, and filling an organic electrolyte or a polymer electrolyte between the positive electrode and the negative electrode. When lithium ions are inserted and extracted from the positive electrode and the negative electrode, electrical energy is generated by a redox reaction.

[0006] At this time, the negative electrode and the positive electrode include an electrode active material layer on a current collector of each electrode. Such an electrode can be manufactured by mixing and stirring an electrode active material with a binder, a solvent, a conductive material, and a dispersant as necessary to produce an electrode slurry, and then applying the electrode slurry onto the current collector using a slot die coater and drying and rolling it.

[0007] In recent years, as the demand for secondary batteries with high energy density has increased, there has been a growing demand for high-loading and ultra-high-loading electrodes, in which more electrode slurry is loaded onto the current collector.

[0008] Incidentally, in the traditional electrode manufacturing method described above, as the loading amount (thickness) of the electrode slurry increases, the electrode slurry discharged from the slot die coater during the coating process becomes larger than the target electrode specifications due to its high fluidity. This leads to a sliding (collapse) phenomenon where the loading amount is smaller at the edges of the electrode slurry coated area compared to the center of the electrode slurry coated area, relative to the width direction of the coated area. Furthermore, in the traditional electrode manufacturing method, as the loading amount (thickness) of the electrode slurry increases, the drying process of the electrode slurry may deepen the occurrence of cracks caused by the difference in drying speed near the boundary between the electrode slurry coated area and the uncoated area.

[0009] Therefore, in manufacturing high-loading or ultra-high-loading electrodes, novel technological development is needed to solve the problems caused by the conventional electrode manufacturing methods described above. [Overview of the project] [Problems that the invention aims to solve]

[0010] The present invention aims to provide a novel electrode manufacturing apparatus and method for manufacturing high-loading electrodes or ultra-high-loading electrodes, which solves the problems of conventional electrode manufacturing methods despite the increase in loading amount. [Means for solving the problem]

[0011] According to one embodiment of the present invention, an electrode manufacturing apparatus is provided. The electrode manufacturing apparatus includes a box-shaped cast having an internal space for housing an electrode slurry and a current collector, an electrode slurry inlet for injecting the electrode slurry into the internal space, and a current collector inlet for introducing the current collector into the internal space, and a heat source configured to heat the cast to dry the electrode slurry filled inside the cast, wherein the current collector inlet is located in the center of the first surface of the cast on which the current collector inlet is formed in order to laminate the electrode slurry on both sides of the current collector, and the cast may be configured to press the electrode slurry in the direction of the current collector in order to roll the electrode slurry laminated on both sides of the current collector.

[0012] In one embodiment, the cast may further include a first vent hole for discharging gas generated by the vaporization of the solvent in the electrode slurry laminated on one side of the current collector to the outside of the cast, and a second vent hole for discharging gas generated by the vaporization of the solvent in the electrode slurry laminated on the other side of the current collector to the outside of the cast.

[0013] In one embodiment, the cast can be configured to allow independent adjustment of the lateral length, vertical length, and thickness of the internal space.

[0014] In one embodiment, the cast can be configured to fix the current collector.

[0015] In one embodiment, the cast can be configured to fix the current collector in an upright position.

[0016] In one embodiment, the internal space of the cast can be divided into a first internal space and a second internal space by the insertion of a current collector.

[0017] An electrode manufacturing apparatus according to one embodiment may further include a drive unit for moving the first and second pressing surfaces of the cast, which are used to press together electrode slurries laminated on both sides of a current collector, in the pressing direction.

[0018] In one embodiment, the heat source can be built into the cast.

[0019] In one embodiment, the heat source can be incorporated into the first and second pressure surfaces of the cast for rolling the electrode slurry laminated on both sides of the current collector.

[0020] In one embodiment, the electrode slurry inlet may include a first electrode slurry inlet for injecting electrode slurry to be laminated on one surface of the current collector, and a second electrode slurry inlet for injecting electrode slurry to be laminated on the other surface of the current collector.

[0021] According to another embodiment of the present invention, an electrode manufacturing method is provided. The electrode manufacturing method may involve manufacturing electrodes using the electrode manufacturing apparatus described above.

[0022] In one embodiment, the electrode manufacturing method may include the steps of: inserting a current collector into the current collector inlet; injecting electrode slurry through the electrode slurry inlet so that the electrode slurry is layered on both sides of the current collector; raising the temperature of the heat source to dry the electrode slurry; and rolling the electrode slurry simultaneously with the start of the raising temperature step or in the middle of the raising temperature step.

[0023] An electrode manufacturing method according to one embodiment may further include a step of adjusting the volume of the internal space of the cast so that the volume of the internal space of the cast is suitable for the specifications of the electrode to be manufactured, before the current collector insertion step.

[0024] In one embodiment, during the electrode slurry injection step, the loading amount of electrode slurry to be deposited on one surface of the current collector is 600 mg / 25 cm 2The electrode slurry can be injected in such an amount as described above.

[0025] In one embodiment, the step of raising the temperature of the heat source can be started in a state where the internal space is completely filled with the electrode slurry.

Advantages of the Invention

[0026] According to one embodiment of the present invention, an electrode slurry is injected into a cast having a sealed internal space with a defined standard, and the electrode slurry can be dried and crimped in a state where the internal space is completely filled with the electrode slurry. Therefore, there is no room for sliding due to the fluidity of the electrode slurry, and an electrode of a desired standard can be manufactured.

[0027] According to one embodiment of the present invention, the electrode slurry can be crimped simultaneously with the drying of the electrode slurry, and even if the loading amount of the electrode slurry is increased, cracks that may be caused by drying differences do not occur, and it is possible to manufacture an electrode with ultra-high loading.

[0028] According to one embodiment of the present invention, by crimping the electrode slurry simultaneously with the drying of the electrode slurry, the boiling point of the solvent in the electrode slurry can be lowered, and the drying temperature can be set lower compared to conventional electrode manufacturing equipment. Therefore, there is an effect of preventing physical property changes of the electrode due to a high drying temperature.

Brief Description of the Drawings

[0029] [Figure 1] It is a front view of an electrode manufacturing apparatus according to an exemplary embodiment. [Figure 2] It is an internal view of an electrode manufacturing apparatus according to an exemplary embodiment. [Figure 3] It is a top view of an electrode manufacturing apparatus according to an exemplary embodiment. [Figure 4] It is a drawing showing a state after an electrode slurry is injected into the internal space of a cast. [Figure 5]This is a flowchart illustrating an electrode manufacturing method according to an exemplary embodiment of the present invention. [Figure 6] This is a flowchart illustrating an electrode manufacturing method according to an exemplary embodiment of the present invention. [Modes for carrying out the invention]

[0030] Preferred embodiments of the present invention will now be described in detail with reference to the attached drawings. Before that, however, the terms and words used herein and in the claims shall not be construed to be limited to their ordinary or dictionary meanings, but rather to be interpreted as meanings and concepts consistent with the technical idea of ​​the present invention, based on the principle that inventors may appropriately define the concepts of terms in order to best describe their own inventions.

[0031] Therefore, the embodiments described herein and the configurations shown in the drawings represent only one of the most preferred embodiments of the present invention and do not represent the entire technical concept of the present invention; there may be a variety of equivalents and modifications that can substitute for them at the time of filing.

[0032] Furthermore, in describing the present invention, if it is determined that a specific description of a related known configuration or function may obscure the gist of the present invention, such detailed description will be omitted.

[0033] Since embodiments of the present invention are provided to give a more complete explanation to an ordinary person of the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or shown schematically for the sake of clarity. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes and proportions.

[0034] In this specification, the term "layering an electrode slurry" includes the concept of filling the remaining space within the cast (mold), excluding the current collector, with electrode slurry in order to form an electrode slurry layer on the current collector.

[0035] (First Embodiment) The present invention provides an electrode manufacturing apparatus as a first embodiment.

[0036] Figure 1 is a front view of an electrode manufacturing apparatus according to an exemplary embodiment, Figure 2 is an internal view of an electrode manufacturing apparatus according to an exemplary embodiment, Figure 3 is a top view of an electrode manufacturing apparatus according to an exemplary embodiment, and Figure 4 is a diagram showing the state after the electrode slurry has been injected into the internal space of the cast.

[0037] Referring to these drawings, an electrode manufacturing apparatus 100 according to an exemplary embodiment may include a box-shaped cast 110 having internal spaces 111a, 111b and a heat source 120. In one embodiment, the electrode manufacturing apparatus 100 can be configured to continuously press the drying electrode slurry 12 toward the current collector 11 while the current collector 11 and electrode slurry 12 are placed in the internal spaces 111a, 111b of the cast.

[0038] The electrode manufacturing apparatus 100 according to an embodiment of the present invention is configured such that the drying and rolling processes can be carried out simultaneously with the electrode slurry 12 sufficiently filled in internal spaces 111a and 111b having predetermined volumes. When electrodes are manufactured using such an electrode manufacturing apparatus 100, there is no room for sliding due to the fluidity of the electrode slurry, and electrodes can be manufactured according to the target electrode specifications. Furthermore, since the coating thickness of the electrode slurry is uniform and the drying and rolling processes can be carried out simultaneously, there is no risk of crack formation, so electrodes with a dramatically increased electrode slurry loading amount can be manufactured. In addition, because the electrode slurry is continuously subjected to pressure during drying, the boiling point of the solvent is lowered, and the electrodes can be dried at a lower drying temperature compared to conventional electrode drying methods, thus preventing changes in the physical properties of the electrodes due to high drying temperatures.

[0039] In one embodiment, the cast may include internal spaces 111a and 111b for housing the electrode slurry 12 and the current collector 11, electrode slurry inlets 112a and 112b for injecting the electrode slurry 12 into the internal spaces 111a and 111b, and a current collector inlet 113 for inserting the current collector 11 into the internal spaces 111a and 111b.

[0040] The above-mentioned cast 110 can be configured to be airtight in order to dry and compress the electrode slurry filled inside, and the material of the cast is not particularly limited, but it is preferably a metallic material with good thermal conductivity for drying the electrode slurry.

[0041] The internal spaces 111a and 111b can have a hexahedron (cuboid) shape corresponding to the shape of the electrode, and the cast 110 can be configured so that the lateral (X direction) length, vertical (Y direction) length, and thickness (Z direction) length of the internal spaces 111a and 111b can be adjusted independently. This makes it possible to adjust the volume of the internal spaces 111a and 111b to suit the target specifications of the electrode to be manufactured.

[0042] As shown in Figure 3, the current collector inlet 113 can be located in the center of the first surface 115 of the cast on which the current collector inlet is formed, thereby allowing the electrode slurry 12 to be laminated on both sides of the current collector 11.

[0043] When the current collector 11 is inserted into the internal spaces 111a and 111b of the cast via the current collector inlet 113, the internal spaces 111a and 111b can be divided into a first internal space 111a and a second internal space 111b by the current collector 11. The electrode slurry 12 injected into the first internal space 111a can become a first electrode active material layer 12a after drying and rolling, and the electrode slurry 12 injected into the second internal space 111b can become a second electrode active material layer 12b after drying and rolling.

[0044] The electrode slurry inlets 112a and 112b described above may be two or more, corresponding to the first internal space 111a and the second internal space 111b. That is, the electrode slurry inlets may include a first electrode slurry inlet 112a for injecting electrode slurry to be laminated on one surface 11a of the current collector, and a second electrode slurry inlet 112b for injecting electrode slurry to be laminated on the other surface 11b of the current collector.

[0045] When the electrode slurry 12 is injected into the internal spaces 111a and 111b, the cast 110 can be configured to fix the current collector 11 in place so that it does not move due to the flow of the electrode slurry. The cast 110 may include a current collector fixing member (not shown) to fix the current collector that has been placed into the internal space.

[0046] The configuration of the current collector fixing member described above is not particularly limited as long as it can prevent the electrode current collector from shaking during the injection of the electrode slurry 12, drying, and rolling processes. Specifically, it may be a gripper configured to grip both sides of the current collector. Such a gripper may include a first gripper mounted around the current collector inlet 113 and a second gripper mounted on the opposite surface of the first surface 115 on which the current collector inlet 113 is formed. The current collector can be fixed by the first gripper gripping one side of the current collector and the second gripper gripping the other side.

[0047] The cast 110 may be configured to fix the current collector in a horizontal position, or it may be configured to fix the current collector 11 in an upright position, as shown in Figures 2 and 4. Here, "horizontal position" means a state in which the plane of the current collector 11 is parallel to the bottom surface of the cast, and "upright position" means a state in which the plane of the current collector 11 is perpendicular to the bottom surface of the cast 110.

[0048] When the cast 110 is configured to fix the current collector 11 in an upright position, the direction of gravity of the electrode slurry (Y direction) when the electrode slurry is injected is parallel to the plane of the current collector, so the gravity of the electrode slurry does not act on the plane of the current collector. In other words, when the cast 110 is configured to fix the current collector in an upright position, even if the electrode slurry is injected simultaneously onto both sides of the current collector, the current collector will not be damaged by the weight of the electrode slurry, thus improving the productivity of electrode manufacturing.

[0049] On the other hand, if the cast 110 is configured to fix the current collector 11 in a horizontal position, the direction of gravity of the electrode slurry 12 becomes perpendicular to the plane of the current collector, so the weight of the electrode slurry 12 will exert a force on the current collector. In order to prevent damage to the current collector 11 due to the weight of the electrode slurry, a method of sequentially injecting the electrode slurry into the first internal space and then the second internal space can be considered when injecting the electrode slurry into the internal space of the cast. However, in this case, productivity is reduced compared to the case in which the current collector is configured to be fixed in an upright position.

[0050] The heat source 120 can be configured to heat the cast 110 in order to dry the electrode slurry 12 filled inside the cast. Referring to Figures 2 and 4, the heat source 120 can be built into the cast 110.

[0051] On the other hand, the cast 110 may have a hexahedral shape in which six walls are joined together in a sealed manner to dry and press the electrode slurry filled inside, but the parts in which the heat source is built in may be the first pressure surface 116 and the second pressure surface 117 for pressing the electrode slurry. It is preferable that the heat source is built in the first pressure surface 116 and the second pressure surface 117 because it can increase the drying efficiency when drying and rolling are performed simultaneously. However, it is not limited to this, and the heat source 120 may be built in the remaining four surfaces in addition to the first pressure surface 116 and the second pressure surface 117.

[0052] The heat source 120 is not limited in form or means as long as it can heat the cast 110 surrounding the heat source, and an induction heating coil can be given as a specific example of the heat source 120.

[0053] The temperature of the heat source 120 can be controlled by the temperature control unit 140. Specifically, after the internal space of the cast 110 is completely filled with electrode slurry, the temperature control unit 140 can control the heat source 120 to raise its temperature in order to dry the electrode slurry. When the temperature of the heat source rises, the cast is heated and the temperature of the electrode slurry rises. After the drying of the electrode slurry is complete, the temperature control unit 140 can control the heat source to lower its temperature so that the cast returns to room temperature.

[0054] When the heat source 120 is heated and the electrode slurry is heated, drying occurs in which the solvent in the electrode slurry vaporizes and is removed. At this time, the cast 110 may be equipped with vent holes 114a and 114b to discharge the vaporized solvent to the outside of the cast.

[0055] In one embodiment, the cast 110 may include a first vent hole 114a for discharging gas generated by the vaporization of the solvent in the electrode slurry laminated on one surface 11a of the current collector to the outside of the cast, and a second vent hole 114b for discharging gas generated by the vaporization of the solvent in the electrode slurry laminated on the other surface 11b of the current collector to the outside of the cast.

[0056] The positions of the first vent hole 114a and the second vent hole 114b are not particularly limited, but in order to improve the gas discharge efficiency, it is preferable that they be placed on the first pressure surface 116 and the second pressure surface 117, which are used to press the electrode slurry, among the six surfaces that make up the cast.

[0057] The cast 110 is configured to press the electrode slurry 12 in the direction of the current collector 11 in order to roll the electrode slurry that has been laminated on both sides of the current collector 11. Referring to Figure 4, the two surfaces constituting the cast 110 can be configured to move in the direction of the current collector in order to press the electrode slurry filling the internal space in the direction of the current collector (arrow direction). The two surfaces are opposite to each other, and in this specification, the two surfaces for pressing the electrode slurry filling the internal space of the cast are referred to as the first pressing surface 116 and the second pressing surface 117, respectively.

[0058] The electrode manufacturing apparatus 100 according to the present invention may further include a drive unit 130 for moving the first pressure surface 116 and the second pressure surface 117 of the cast in the crimping direction. The drive unit 130 may include a motor that provides a driving force to continuously move the first pressure surface 116 and the second pressure surface 117 during the drying of the electrode slurry. The drive unit also moves the first pressure surface 116 and the second pressure surface 117 in the crimping direction, but can maintain that state after moving the first pressure surface 116 and the second pressure surface 117 by a set distance. Furthermore, after the manufacturing of the electrode is completed, the drive unit 130 can provide a driving force to return the first pressure surface 116 and the second pressure surface 117 to their original positions.

[0059] An electrode manufacturing apparatus 100 according to one embodiment may include a main control unit 150, which may be configured to control the volume of the internal space of the cast 110, the temperature control unit 140, and the drive unit 130.

[0060] Unlike conventional electrode manufacturing equipment, the electrode manufacturing apparatus described above injects the electrode slurry into a cast with a sealed internal space that meets specified standards. This eliminates the possibility of sliding due to the fluidity of the electrode slurry, allowing for the production of electrodes of the desired specifications. Furthermore, the electrode slurry can be compressed simultaneously with drying, preventing crack formation, unlike conventional electrode manufacturing equipment. This also allows for a lower boiling point of the solvent in the electrode slurry, enabling a lower drying temperature than conventional electrode manufacturing equipment.

[0061] (Second Embodiment) As a second embodiment, the present invention provides a method for manufacturing electrodes.

[0062] An exemplary embodiment of the present invention provides an electrode manufacturing method characterized by using the electrode manufacturing apparatus described above. This provides the effects of the electrode manufacturing apparatus described above.

[0063] Figure 5 is a flowchart illustrating an electrode manufacturing method according to an exemplary embodiment of the present invention. Referring to Figure 5, an electrode manufacturing method according to one embodiment of the present invention may include a step P110 of inserting a current collector into the current collector inlet, a step P120 of injecting electrode slurry through the electrode slurry inlet so that the electrode slurry is laminated on both sides of the current collector, a heating step P130 of raising the temperature of the heat source to dry the electrode slurry, and a step P140 of rolling the electrode slurry simultaneously with the start of the heating step or in the middle of the heating step.

[0064] In the process of switching on the current collector, the current collector may be a positive electrode current collector or a negative electrode current collector.

[0065] The electrode slurry described above may be a positive electrode slurry or a negative electrode slurry. The electrode slurry can be prepared by mixing and stirring an electrode active material, a binder, a conductive material, and a solvent.

[0066] According to one embodiment of the present invention, step P120 for injecting the electrode slurry for the manufacture of an ultra-high loading electrode is performed such that the loading amount of the electrode slurry laminated on one surface of the current collector is 600 mg / 25 cm 2 The electrode slurry may be injected in an amount equal to or greater than the specified amount.

[0067] As described above, the electrode manufacturing method according to the present invention simultaneously performs the drying and crimping processes with the internal space of the cast 110 completely filled with electrode slurry. Therefore, even when the loading amount of electrode slurry is increased to a very high level, the coating thickness of the electrode slurry remains uniform. This eliminates differences in drying and rolling density depending on the horizontal position of the electrode, making it possible to manufacture ultra-high loading electrodes. Here, the loading amount of electrode slurry for ultra-high loading electrodes is 600 mg / 25 cm, based on the loading amount of electrode slurry laminated on one surface of the current collector. 2 For more details, see 700mg / 25cm 2 For more details, see 750mg / 25cm 2 ~1500mg / 25cm 2 More specifically, 800mg / 25cm 2 ~1200mg / 25cm 2 It is possible.

[0068] Figure 6 is a flowchart illustrating an electrode manufacturing method according to an exemplary embodiment of the present invention. Referring to Figure 6, an electrode manufacturing method according to one embodiment may further include a step P150 before the current collector insertion step, in which the volume of the internal space of the cast is adjusted so that it conforms to the specifications of the electrode to be manufactured.

[0069] The step of adjusting the volume of the internal space described above (P150) may include adjusting the lateral length, vertical length, and thickness of the internal space of the cast so that they correspond to the lateral length, vertical length, and thickness of the electrode to be manufactured, respectively.

[0070] The process P130 for raising the temperature of the heat source is started when the internal space is completely filled with the electrode slurry. This is because if the heat source is heated when the internal space is not completely filled with the electrode slurry, the electrodes cannot be manufactured to the desired specifications.

[0071] The present invention has been described in more detail above through the drawings and embodiments. However, the configurations described in the drawings or embodiments described herein are merely one embodiment of the present invention and do not represent the entire technical concept of the present invention. Therefore, there may be various equivalents and modifications that can be substituted for them at the time of filing. [Explanation of symbols]

[0072] 100: Electrode manufacturing equipment 110: Cast 111a: 1st internal space 111b:Second internal space 112a, 112b: Electrode slurry injection port 113: Current collector inlet 114a: First Benthole 114b: Second Bend Hall 115: 1st page 116: First pressure surface 117: Second pressure surface 120: Heat source 130: Drive unit 140: Temperature control section 150: Main Control Unit 11: Current collector 12: Electrode slurry

Claims

1. A box-shaped cast comprising an internal space for housing an electrode slurry and a current collector, an electrode slurry inlet for injecting the electrode slurry into the internal space, and a current collector inlet for inserting the current collector into the internal space, The cast includes a heat source configured to heat the cast in order to dry the electrode slurry filled inside the cast, In order to laminate the electrode slurry on both sides of the current collector, the current collector inlet is located in the center of the first surface of the cast on which the current collector inlet is formed. An electrode manufacturing apparatus, wherein the cast is configured to press the electrode slurry in the direction of the current collector in order to roll the electrode slurry laminated on both sides of the current collector.

2. The aforementioned cast members are A first vent hole for discharging gas generated by the vaporization of the solvent in the electrode slurry laminated on one surface of the current collector to the outside of the cast, The electrode manufacturing apparatus according to claim 1, further comprising: a second vent hole for discharging gas generated by the vaporization of the solvent of the electrode slurry laminated on the other side of the current collector to the outside of the cast.

3. The electrode manufacturing apparatus according to claim 1, wherein the cast is configured to independently adjust the lateral length, vertical length, and thickness of the internal space.

4. The electrode manufacturing apparatus according to claim 1, wherein the cast is configured to fix the current collector.

5. The electrode manufacturing apparatus according to claim 1, wherein the cast is configured to fix the current collector in an upright position.

6. The electrode manufacturing apparatus according to claim 1, wherein the internal space of the cast is divided into a first internal space and a second internal space by the insertion of a current collector.

7. The electrode manufacturing apparatus according to claim 1, further comprising a drive unit for moving the first and second pressing surfaces of the cast, which are used to press together electrode slurries laminated on both sides of the current collector, in the pressing direction.

8. The electrode manufacturing apparatus according to claim 1, wherein the heat source is built into the cast.

9. The electrode manufacturing apparatus according to claim 1, wherein the heat source is incorporated into the first and second pressing surfaces of the cast for rolling the electrode slurry laminated on both sides of the current collector.

10. The electrode manufacturing apparatus according to claim 1, wherein the electrode slurry inlet includes a first electrode slurry inlet for injecting an electrode slurry to be laminated on one surface of the current collector, and a second electrode slurry inlet for injecting an electrode slurry to be laminated on the other surface of the current collector.

11. An electrode manufacturing method for manufacturing an electrode using an electrode manufacturing apparatus according to any one of claims 1 to 10.

12. The process of inserting the current collector into the current collector insertion port, An injection step in which electrode slurry is injected through the electrode slurry injection port so that electrode slurry is deposited on both sides of the current collector, A heating step of raising the temperature of the heat source in order to dry the electrode slurry, The electrode manufacturing method according to claim 11, further comprising a rolling step of rolling the electrode slurry simultaneously with or during the heating step.

13. Before the aforementioned input process, The electrode manufacturing method according to claim 12, further comprising the step of adjusting the volume of the internal space of the cast so that the volume of the internal space is suitable for the specifications of the electrode to be manufactured.

14. In the injection step, the loading amount of electrode slurry to be deposited on one surface of the current collector is 600 mg / 25 cm ２ The electrode manufacturing method according to claim 12, wherein the electrode slurry is injected in an amount equal to or greater than the specified amount.

15. The electrode manufacturing method according to claim 12, wherein the heating step is started when the internal space is completely filled with the electrode slurry.

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