Electrode manufacturing method and electrode manufacturing apparatus

Abstract

To provide an electrode manufacturing method and an electrode manufacturing apparatus that can prevent active material from scattering when powdered active material is compressed.SOLUTION: A method for manufacturing an electrode having an active material layer includes the steps of placing a cylindrical body with its axis oriented vertically, supplying active material that constitutes the active material layer into the cylindrical body, flattening an upper surface of the active material inside the cylindrical body, adding an electrolyte to the active material with the flattened upper surface inside the cylindrical body, pressing the active material with the electrolyte added inside the cylindrical body, and removing the cylindrical body.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a method for manufacturing an electrode and an apparatus for manufacturing an electrode.

Background Art

[0002] When manufacturing an active material layer included in an electrode of a lithium ion battery, a powdery active material is compacted. Such a method and apparatus for manufacturing an electrode are described in Patent Document 1.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in such a manufacturing method, since the active material is in powder form, it is difficult to handle. For example, although the active material is placed to be compacted, if there are irregularities on the surface of the placed active material, there will be portions with different electrode densities in the active material layer. Therefore, when the surface of the active material is smoothed after placing the active material, although the surface can be made flat, the active material may be scattered.

[0005] In view of the above circumstances, at least one embodiment of the present disclosure aims to provide a method for manufacturing an electrode and an apparatus for manufacturing an electrode that can prevent the active material from scattering when compacting the powdery active material.

Means for Solving the Problems

[0006] To achieve the above object, a method for manufacturing an electrode according to the present disclosure is a method for manufacturing an electrode including an active material layer, the method including: installing a cylindrical body so that its axial direction faces the vertical direction; supplying an active material constituting the active material layer into the cylindrical body; flattening the upper surface of the active material in the cylindrical body; adding an electrolytic solution to the active material whose upper surface has been flattened in the cylindrical body; pressing the active material to which the electrolytic solution has been added in the cylindrical body; and removing the cylindrical body.

[0007] In addition, a manufacturing apparatus for an electrode according to the present disclosure is a manufacturing apparatus for an electrode including an active material layer, the apparatus including: a lifting and lowering unit configured to lift or lower a cylindrical body in a vertical direction such that its axial direction faces the vertical direction; a supply unit configured to supply an active material constituting the active material layer into the cylindrical body; a flattening unit configured to flatten the upper surface of the active material in the cylindrical body; an adding unit configured to add an electrolytic solution to the active material whose upper surface has been flattened in the cylindrical body; and a pressing unit configured to press the active material to which the electrolytic solution has been added in the cylindrical body.

Advantages of the Invention

[0008] According to the method for manufacturing an electrode and the manufacturing apparatus for an electrode of the present disclosure, since the active material is pressed in a cylindrical body, it is possible to prevent the active material from scattering when the powdery active material is compacted.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Mode for Carrying Out the Invention

[0010] Hereinafter, the manufacturing method of the electrode and the manufacturing apparatus of the electrode according to the embodiments of the present disclosure will be described with reference to the drawings. The embodiments described below show one aspect of the present disclosure, do not limit this disclosure, and can be arbitrarily changed within the scope of the technical idea of the present disclosure.

[0011] (Embodiment 1) As shown in FIG. 1, the lithium ion battery 1 includes a positive electrode 2, a negative electrode 3, and a separator 4 provided between the positive electrode 2 and the negative electrode 3. The positive electrode 2 includes a positive electrode active material layer 5 and a positive electrode current collector 6. The negative electrode 3 includes a negative electrode active material layer 7 and a negative electrode current collector 8.

[0012] FIG. 2 shows a schematic configuration of a manufacturing apparatus 10 for the positive electrode 2 and the negative electrode 3 (hereinafter, these are collectively referred to as "electrodes"). The manufacturing apparatus 10 includes a lifting and lowering unit 12 that raises or lowers a cylindrical cylinder body 11 in the vertical direction with its axial direction facing the vertical direction, a supply unit 13 that supplies an active material 14 (an aggregate of active material particles) that constitutes the positive electrode active material layer 5 and the negative electrode active material layer 7 into the cylinder body 11, a flattening unit 15 that flattens the upper surface 14a of the active material 14 in the cylinder body 11, an adding unit 16 that adds an electrolytic solution 17 to the active material 14 whose upper surface 14a has been flattened in the cylinder body 11, and a pressing unit 18 that presses the active material 14 to which the electrolytic solution 17 has been added in the cylinder body 11.

[0013] The configuration of the elevating and lowering unit 12 is not particularly limited. For example, the elevating and lowering unit 12 may include a pair of gripping parts 12a, 12a for gripping the cylindrical body 11 and a moving part 12b for moving the pair of gripping parts 12a, 12a in the vertical direction. Although two elevating and lowering units 12 are depicted in Fig. 2, this is a configuration in which the elevating and lowering unit 12 for placing the cylindrical body 11 and the elevating and lowering unit 12 for removing the cylindrical body 11 are provided separately as described later. The elevating and lowering unit 12 may be movable in the horizontal direction so that these two operations can be performed by one elevating and lowering unit 12.

[0014] The configuration of the supply unit 13 is not particularly limited. For example, the supply unit 13 may include a storage part 13a for storing the active material 14 and a nozzle part 13b for supplying the active material 14 in the storage part 13a into the cylindrical body 11.

[0015] The configuration of the flattening unit 15 is not particularly limited. For example, the flattening unit 15 may flatten the upper surface 14a of the active material 14 in the cylindrical body 11 by gripping the cylindrical body 11 and vibrating the cylindrical body 11. In this case, the flattening unit 15 may include, for example, a pair of gripping parts 15a, 15a for gripping the cylindrical body 11 and a vibration generating part 15b for vibrating the gripping parts 15a, 15a. Further, the flattening unit 15 may flatten the upper surface 14a of the active material 14 by stroking it with, for example, a brush or a spatula (see Figs. 6 and 7).

[0016] The configuration of the addition unit 16 is not particularly limited. For example, the addition unit 16 may include a storage part 16a for storing the electrolytic solution 17 and a nozzle part 16b for supplying the electrolytic solution 17 in the storage part 16a into the cylindrical body 11.

[0017] The configuration of the pressing unit 18 is not particularly limited. For example, the pressing unit 18 may include a piston part 18a movable in the upward limit direction and a moving device 18b for moving the piston part 18a in the vertical direction.

[0018] As described below, the manufacturing apparatus 10 manufactures the active material layer 9, which is the positive electrode active material layer 5 or the negative electrode active material layer 7. However, the positive electrode active material layer 5 and the negative electrode active material layer 7 are usually manufactured using different active materials 14. By combining the two types of active material layers 9 (the positive electrode active material layer 5 and the negative electrode active material layer 7), the positive electrode current collector 6, the negative electrode current collector 8, and the separator 4, a lithium ion battery 1 including the positive electrode 2 and the negative electrode 3 is formed. However, the assembling unit 19 for assembling these may be provided separately from the manufacturing apparatus 10 or may be included in the manufacturing apparatus 10. In the manufacturing apparatus 10 shown in FIG. 2, it is assumed that the assembling unit 19 is provided separately from the manufacturing apparatus 10.

[0019] Next, based on FIG. 2, a method for manufacturing an electrode according to Embodiment 1 of the present disclosure will be described. First, the elevating / lowering unit 12 installs the cylindrical body 11 so that its axial direction faces the vertical direction (step S1). Next, the supply unit 13 supplies the active material 14 that constitutes the active material layer 9 into the cylindrical body 11 (step S2). Next, the flattening unit 15 flattens the upper surface 14a of the active material 14 in the cylindrical body 11 (step S3). Next, the adding unit 16 adds the electrolytic solution 17 to the active material 14 whose upper surface 14a has been flattened in the cylindrical body 11 (step S4). Next, the pressing unit 18 presses the active material 14 to which the electrolytic solution 17 has been added within the cylindrical body 11 (step S5). Next, the elevating / lowering unit 12 raises the cylindrical body 11 to remove the cylindrical body 11 from the compacted active material 14 (step S6). Thereby, the active material layer 9 is formed. Finally, by combining the two active material layers 9 (the positive electrode active material layer 5 and the negative electrode active material layer 7), the positive electrode current collector 6, the negative electrode current collector 8, and the separator 4, the positive electrode 2 and the negative electrode 3 are formed, and a lithium ion battery 1 including the positive electrode 2, the negative electrode 3, and the separator 4 is formed (step S7).

[0020] According to the method for manufacturing an electrode according to Embodiment 1, since the active material 14 is pressed within the cylindrical cylindrical body 11, it is possible to prevent the active material 14 from scattering when the powdery active material 14 is compacted.

[0021] (Modification of Embodiment 1) In Embodiment 1, the location where the cylindrical body 11 is installed is not mentioned. However, for example, the cylindrical body 11 may be installed on a conveyor. When the cylindrical body 11 is installed on the conveyor, since the cylindrical body 11 is moved by the conveyor, the elevating part 12, the supply part 13, the flattening part 15, the adding part 16, and the pressing part 18 of the manufacturing apparatus 10 can be fixed along the moving direction of the cylindrical body 11 above the conveyor. Thereby, it is possible to automate steps S1 to S6 in the above-described manufacturing method.

[0022] The cylindrical body 11 may be installed on the current collector. Thereby, since the active material layer 9 is manufactured on the current collector, the positive electrode 2 and the negative electrode 3 are manufactured. The current collector may be placed on the conveyor.

[0023] As shown in FIG. 3, the manufacturing apparatus 10 may include a vacuum apparatus 20 in which at least the supply part 13, the flattening part 15, the adding part 16, and the pressing part 18 are provided inside. In this configuration, since the supply of the active material 14 (see FIG. 2) into the cylindrical body 11 to the pressing of the active material 14 can be performed in a vacuum state, the active material 14 does not scatter into the surrounding air. Thus, the effect of preventing the active material from scattering when pressing the active material can be enhanced. When the manufacturing apparatus 10 includes a conveyor 21, it is preferable that the conveyor 21 can pass through the inside of the vacuum apparatus 20. In FIG. 3, the elevating part 12 is arranged outside the vacuum apparatus 20, but the elevating part 12 may also be provided inside the vacuum apparatus 20.

[0024] As shown in FIG. 4, a plurality of pressing parts 18 may be provided so as to be movable along a rotation orbit 22. In this configuration, a part of the conveyor 21 that moves the cylindrical body 11 and a part of the rotation orbit 22 overlap in the vertical direction. With such a configuration, in a portion where a part of the conveyor 21 and a part of the rotation orbit 22 overlap in the vertical direction, the pressing part 18 can be moved in synchronization with the movement of the conveyor 21 by the operation described below.

[0025] As shown in Fig. 5, in a portion where a part of the conveyor 21 and a part of the rotation orbit 22 overlap in the vertical direction, the cylindrical body 11 is at position P by the conveyor 21 0 to position P 5 and is moving toward it. Suppose that when the cylindrical body 11 reaches position P 0 , the piston part 18a of the pressing part 18 descends to press the active material 14 inside the cylindrical body 11. Since the movement of the cylindrical body 11 and the movement of the pressing part 18 are synchronized in this state, while the cylindrical body 11 moves from position P 0 to position P 5 , the active material 14 inside the cylindrical body 11 is pressed by the piston part 18a. When the cylindrical body 11 reaches position P 5 , the piston part 18a ascends and the pressing of the active material 14 ends. Thereby, the active material 14 in the plurality of cylindrical bodies 11 can be continuously pressed.

[0026] (Embodiment 2) Next, a method for manufacturing an electrode and an electrode manufacturing apparatus according to Embodiment 2 of the present disclosure will be described. The method for manufacturing an electrode and the electrode manufacturing apparatus according to Embodiment 2 are for manufacturing an electrode provided with a frame body in which an active material is accommodated. In Embodiment 2, the same components as those in Embodiment 1 are denoted by the same reference numerals, and detailed descriptions thereof are omitted. Also, unless otherwise specified and as long as there is no structural contradiction, each modification of Embodiment 1 may be applied in Embodiment 2 as well.

[0027] The manufacturing method according to Embodiment 2 described below can be implemented using the manufacturing apparatus 10 (see Fig. 2) according to Embodiment 1. As shown in Fig. 6, the frame body 30 is installed (step S0). The installation location of the frame body 30 is not particularly limited, but like the modification of Embodiment 1, it may be on a conveyor or a current collector.

[0028] In step S1, which is performed subsequent to step S0, unlike step S1 of Embodiment 1, the cylindrical body 11 is placed on the frame body 30 such that one end face 11a of the cylindrical body 11 contacts the upper end face 30a of the frame body 30. The operations of steps S2 to S4, which are performed subsequent to step S1, are the same as those in Embodiment 1.

[0029] Before step S5 that is performed after step S4, a separator 4 is placed on the upper surface 14a of the active material 14 to which the electrolytic solution 17 has been added (step S10). Thereby, in step S5, the active material 14 to which the electrolytic solution 17 has been added is pressed by the piston portion 18a of the pressing portion 18 with the separator 4 interposed therebetween. In subsequent step S6, the cylindrical body 11 is removed and the piston portion 18a is also raised, and the pressing of the active material 14 is completed. Incidentally, if the cylindrical body 11 is removed while the piston portion 18a is pressing the active material 14 and then the piston portion 18a is raised, it is possible to prevent the separator 4 from being removed from the active material 14 together with the cylindrical body 11.

[0030] Although the size of the separator 4 has not been mentioned, when pressing the active material 14 with the separator 4 interposed therebetween within the cylindrical body 11, it is preferable that the separator 4 has a size that allows the peripheral edge of the separator 4 to bend along the inner peripheral surface of the cylindrical body 11. When using the separator 4 of such a size, at the end of step S6, the separator 4 with the peripheral edge bent is placed on the active material 14. This separator 4 is shaped into a flat shape as much as possible using a suitable instrument 31 (step S11). Next, the active material 14 is pressed with the separator 4 interposed therebetween by a finishing pressing device 32 (step S12). If the separator 4 of the above-mentioned size is used, the peripheral edge of the separator 4 comes into contact with the upper end surface 30a of the frame body 30, so that it is possible to suppress the active material 14 from being extruded from between the frame body 30 and the separator 4 when pressing the active material 14 in step S12.

[0031] After that, in the assembly section 19 (see FIG. 2), a current collector is combined with the one manufactured by the above manufacturing method to form an electrode. Two such electrodes (corresponding to a positive electrode and a negative electrode) are manufactured, and the two electrodes are combined so that the respective separators 4 are laminated, and the frames 30 are fixed to each other, thereby forming a lithium ion battery. When the frame 30 is placed on the current collector in step S0, the electrode is manufactured at the end of step S12. In this case, the assembly section 19 performs the assembly operation of the lithium ion battery by combining the completed electrodes instead of the electrode assembly operation.

[0032] Similar to Embodiment 1, in the method for manufacturing an electrode according to Embodiment 2, since the active material 14 is pressed within the cylindrical tubular body 11, it is possible to prevent the active material 14 from scattering when the powdery active material 14 is compacted.

[0033] (Embodiment 3) Next, a method for manufacturing an electrode and an apparatus for manufacturing an electrode according to Embodiment 3 of the present disclosure will be described. The method for manufacturing an electrode and the apparatus for manufacturing an electrode according to Embodiment 3 are for manufacturing an electrode including a frame in which an active material is accommodated. In Embodiment 3, the same components as those in Embodiment 1 are denoted by the same reference numerals, and detailed descriptions thereof are omitted. Also, unless otherwise specified and as long as there is no structural contradiction, each modification of Embodiment 1 may be applied in Embodiment 3.

[0034] The manufacturing method according to Embodiment 3 described below can be implemented using the manufacturing apparatus 10 (see FIG. 2) according to Embodiment 1. As shown in FIG. 7, the frame 30 is installed (step S0). The installation location of the frame 30 is not particularly limited, but similar to the modification of Embodiment 1, it may be on the conveyor.

[0035] In step S20, which is performed following step S0, a separator 4, whose periphery is formed to extend from the upper end surface 30a to the inner peripheral surface 30b of the frame body 30, is fitted into the frame body 30. When the separator 4 is fitted into the frame body 30, the periphery of the separator 4 extends along the upper end surface 30a to the inner peripheral surface 30b of the frame body 30, and the central portion surrounded by the periphery of the separator 4 is flush with the lower end surface 30c of the frame body 30.

[0036] In step S1, which is performed following step S20, unlike step S1 of Embodiment 1, the cylindrical body 11 is installed within the frame body 30 such that one end surface 11a of the cylindrical body 11 abuts against the separator 4. The operations of steps S2 to S5, which are performed following step S1, are the same as those of Embodiment 1. In subsequent step S6, the cylindrical body 11 is removed and the piston portion 18a is also raised, ending the pressing of the active material 14.

[0037] After the end of step S6, a current collector 40 is placed on the upper surface 14a of the active material 14 (step S21). Next, the current collector 40 is pressed toward the active material 14 by a finishing pressing device 32 (step S22). Finally, the current collector 40 is welded and fixed to the frame body 30 by a welding device 41 (step S23), thereby manufacturing an electrode.

[0038] After this, in the assembly section 19 (see FIG. 2), two electrodes (corresponding to the positive electrode and the negative electrode) manufactured by the above manufacturing method are manufactured, and the two electrodes are combined so as to sandwich the respective separators 4, and the frame bodies 30 are fixed to each other, thereby forming a lithium-ion battery. In Embodiment 3, since the electrode is manufactured at the end of step S23, the assembly section 19 performs the assembly operation of the lithium-ion battery by combining the completed electrodes instead of the assembly operation of the electrodes.

[0039] Similar to Embodiment 1, in the method for manufacturing an electrode according to Embodiment 3, since the active material 14 is pressed inside the cylindrical tubular body 11, it is possible to prevent the active material 14 from scattering when the powdery active material 14 is compacted. Further, at the end of Step S23, an electrode in which the active material 14 is wrapped by the separator 4, the current collector 40, and the frame body 30 is manufactured, so that the handling of the electrode in the subsequent assembly operation of the lithium ion battery becomes easy.

[0040] (Embodiment 4) Next, a method for manufacturing an electrode and an electrode manufacturing apparatus according to Embodiment 4 of the present disclosure will be described. The method for manufacturing an electrode and the electrode manufacturing apparatus according to Embodiment 4 are those in which the method of combining the positive electrode and the negative electrode is changed with respect to Embodiment 3. In Embodiment 4, the same components as those in Embodiment 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

[0041] As described above, Embodiment 4 is different from Embodiment 3 in the method of combining the positive electrode and the negative electrode. Therefore, there are some differences from Embodiment 3 in the method of manufacturing the electrode. First, the differences between the method of manufacturing the electrode of Embodiment 4 and Embodiment 3 will be described.

[0042] As shown in FIG. 8, similar to Embodiment 3, after installing the frame body 30 in Step S0, the separator 4 formed in Step S20 is fitted into the frame body 30. However, in Embodiment 4, a separator 4 having a size such that its peripheral edge protrudes outside the frame body 30 when the separator 4 is fitted into the frame body 30 is used. After performing Step S20, Steps S1 to S6 are sequentially performed in the same manner as in Embodiment 3.

[0043] After the end of step S6, in step S21, similarly to Embodiment 3, the current collector 40 is placed on the upper surface 14a of the active material 14. However, in Embodiment 4, when placed on the upper surface 14a of the active material 14, although the periphery protrudes outside the frame body 30, a current collector 40 having a size that is inside the periphery of the separator 4 is used. After performing step S21, step S22 is performed in the same manner as in Embodiment 3. As a result, an electrode in which the active material 14 is wrapped by the separator 4, the current collector 40, and the frame body 30 is manufactured.

[0044] Next, the assembly operation of a lithium-ion battery in which two electrodes manufactured by the above-described method are combined as the positive electrode 2 and the negative electrode 3 will be described. In step S30 following step S22, the positive electrode 2 and the negative electrode 3 are combined such that the separators 4a and 4b of the positive electrode 2 and the negative electrode 3 are bonded to each other. In the subsequent step S31, the peripheral edge portion 4a1 of the separator 4a and the peripheral edge portion 4b1 of the separator 4b are bonded to each other and sandwiched by a pair of tools 50, 50. At an arbitrary position of the bonded peripheral edge portions 4a1, 4b1, a resin supply nozzle 52 for supplying the resin 51 is inserted between the peripheral edge portions 4a1, 4b1. In this state, the resin 51 is supplied from the resin supply nozzle 52 into the space defined by the peripheral edge portions 4a1, 4b1, the frame body 30d of the positive electrode 2, and the frame body 30e of the negative electrode 330e.

[0045] When the supplied resin 51 is solidified, the resin 51 fixes the frame bodies 30d, 30e in a state where they are bonded to each other. Finally, the positive current collector 6 and the separator 4a are welded and fixed to the frame body 30d by the welding device 41, and the negative current collector 8 and the separator 4b are welded and fixed to the frame body 30e (step S32), whereby the lithium-ion battery 1 is assembled.

[0046] When two electrodes manufactured by the method of Embodiment 4 are combined as the positive electrode 2 and the negative electrode 3, since the frame bodies 30d, 30e of the respective electrodes are fixed by the resin 51 in a state where they are bonded to each other, a robust lithium-ion battery 1 is obtained.

Explanation of Reference Numerals

[0047] 2 Positive electrode (electrode), 3 Negative electrode (electrode), 4 Separator, 5 Positive electrode active material layer (active material layer), 6 Positive electrode current collector (current collector), 7 Negative electrode active material layer (active material layer), 8 Negative electrode current collector (current collector), 9 Active material layer, 10 Manufacturing apparatus, 11 Cylindrical body, 11a One end face of the (cylindrical body), 12 Lifting and lowering part, 13 Supply part, 14 Active material, 15 Flattening part, 16 Addition part, 17 Electrolyte, 18 Pressing part, 20 Vacuum apparatus, 21 Conveyor, 22 Rotation orbit, 30 Frame body, 30a Upper end face of the (frame body), 30d Cylindrical body, 30e Cylindrical body, 40 Current collector.

Claims

1. A method for manufacturing an electrode comprising an active material layer, comprising: installing a cylindrical body so that its axial direction faces the vertical direction; supplying an active material constituting the active material layer into the cylindrical body; flattening the upper surface of the active material in the cylindrical body; adding an electrolyte to the active material whose upper surface has been flattened in the cylindrical body; pressing the active material to which the electrolyte has been added in the cylindrical body; removing the cylindrical body; A method for manufacturing an electrode.

2. The electrode further comprises a frame for accommodating the active material layer, The manufacturing method comprises the step of installing the frame, The cylindrical body is placed on the frame such that one end face of the cylindrical body contacts the upper end face of the frame. The method for manufacturing an electrode according to claim 1.

3. The electrode further comprises a separator, The manufacturing method includes the step of placing the separator on the upper surface of the active material before pressing the active material to which the electrolyte has been added, The active material to which the electrolyte has been added is pressed with the separator interposed therebetween. The method for manufacturing an electrode according to claim 2.

4. The electrode comprises: a frame for accommodating the active material layer; a separator; a current collector; further comprising, The manufacturing method comprises: the step of installing the frame; the step of fitting the separator into the frame; including, The cylindrical body is installed in the frame such that one end face of the cylindrical body abuts against the separator, After the step of removing the cylindrical body, the manufacturing method further includes: the step of placing the current collector on the upper surface of the active material; the step of pressing the current collector toward the active material; the step of fixing the current collector to the frame; The method for manufacturing an electrode according to claim 1.

5. Manufacturing positive and negative electrodes, which are two of the electrodes, by the method for manufacturing an electrode according to claim 4; fixing the frame of the positive electrode and the frame of the negative electrode in a state where the separator of the positive electrode and the separator of the negative electrode are overlapped. A method for manufacturing an electrode.

6. The step of pressing the active material to which the electrolyte has been added is performed on a conveyor, Moving a pressing part for pressing the active material so as to be synchronized with the movement of the conveyor. The method for manufacturing an electrode according to any one of claims 1 to 5.

7. An electrode manufacturing apparatus including a living material layer, a lifting and lowering unit configured to lift or lower a cylindrical body in a state where its axial direction faces the vertical direction; a supply unit configured to supply a living material that constitutes the living material layer into the cylindrical body; a flattening unit configured to flatten the upper surface of the living material in the cylindrical body; an adding unit configured to add an electrolytic solution to the living material whose upper surface has been flattened in the cylindrical body; and a pressing unit configured to press the living material to which the electrolytic solution has been added in the cylindrical body. An electrode manufacturing apparatus comprising the above components.

8. The apparatus further includes a conveyor configured to place and move the cylindrical body, wherein the pressing unit is configured to be movable along a rotational orbit, and a part of the rotational orbit overlaps with a part of the conveyor in the vertical direction. The electrode manufacturing apparatus according to claim 7.

9. The apparatus further includes a vacuum device, wherein at least the supply unit, the flattening unit, the adding unit, and the pressing unit are provided in the vacuum device. The electrode manufacturing apparatus according to claim 7 or 8.

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