Electrode foil manufacturing device and battery

Abstract

To enable uniform pressure-bonding of a powder to a substrate.SOLUTION: An electrode foil manufacturing device 1 includes a feed section 10, a facing section 20, and an adjusting section 40. The feed section 10 feeds a powder to a sheet-like base material 2. The facing section 20 extends in a width direction of the base material 2, the direction being substantially orthogonal to a conveyance direction in which the base material 2 is conveyed. The facing section 20 presses the powder fed by the feed section 10 against the base material 2. The adjusting section 40 is provided at an end of the facing section 20 in the width direction. The adjusting section 40 adjusts an amount of the powder guided to the end.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to an apparatus for manufacturing an electrode foil and a battery.

Background Art

[0002] A technique of pressing a powder material onto a base material using a rolling roll is disclosed in, for example, Patent Document 1.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The powder material supplied to the base material as described in Patent Document 1 is not uniformly pressed onto the base material with the same thickness. Therefore, it is required to press the powder material onto the base material as uniformly as possible.

[0005] An example of the object of the present invention is to uniformly press a powder onto a base material.

Means for Solving the Problems

[0006] The invention according to claim 1 a supply unit that supplies a powder to a sheet-shaped base material; a facing portion that extends in the width direction of the base material, which is substantially orthogonal to the conveyance direction in which the base material is conveyed, and presses the powder supplied by the supply unit against the base material; and an adjustment unit that is provided at an end portion of the facing portion in the width direction and adjusts the amount of the powder guided to the end portion, the adjustment unit being provided in an apparatus for manufacturing an electrode foil.

[0007] The invention according to claim 8 A battery having an electrode foil manufactured using the manufacturing apparatus for an electrode foil according to any one of claims 1 to 3.

Advantages of the Invention

[0008] According to the above aspect of the present invention, powder can be uniformly pressure-bonded to a base material.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4A

Figure 4B

Figure 4C

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Mode for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are denoted by the same reference numerals, and the description thereof will be omitted as appropriate.

[0011] <First Embodiment> (Manufacturing Apparatus 1 for Electrode Foil) FIG. 1 is a schematic cross-sectional view of a manufacturing apparatus 1 for an electrode foil according to the first embodiment. FIG. 2 is an enlarged schematic cross-sectional view of a portion A shown in FIG. 1. The manufacturing apparatus 1 will be described with reference to FIGS. 1 and 2. The manufacturing apparatus 1 is an apparatus for manufacturing an electrode foil used in a battery. In the first embodiment, the sheet-like base material 2 is used for manufacturing the positive and negative electrodes of the battery. In the first embodiment, the manufacturing apparatus 1 conveys the base material 2 with an adhesive layer 3 (e.g., undercoat) in the conveyance direction DR1, attaches the powder P described later to the adhesive layer 3 (base material 2), and presses it with a pair of press rolls 90 to manufacture an electrode foil.

[0012] (Supply Unit 10) As shown in FIG. 2, the manufacturing apparatus 1 includes a supply unit 10, a facing unit 20, and a guide unit 30. The supply unit 10 according to the first embodiment has a housing, and the powder P is stored in the housing. The powder P according to the first embodiment is a granule, and the particle size of the granule is 15 [μm] or more and 110 [μm] or less. More preferably, it is in the range of 60 [μm] ± 30 [μm]. The supply unit 10 supplies the powder P to the conveyed base material 2.

[0013] (Facing Unit 20) The opposing part 20 according to the first embodiment, also referred to as a squeegee roll, has a cylindrical shape. The opposing part 20 has a shape extending in the width direction DR2 of the base material 2. The axis of the opposing part 20 is rotatably fixed to a bearing 22 provided in the fixing part 43 of the adjusting part 40. Although not shown in the figure, a driving device such as a motor may be connected to one end of the axis of the opposing part 20.

[0014] The width direction DR2 is a direction substantially orthogonal to the conveyance direction DR1 in which the base material 2 is conveyed, and is the width direction of the base material 2. In this specification, that the conveyance direction DR1 and the width direction DR2 are substantially orthogonal means that the angle formed by the conveyance direction DR1 and the width direction DR2 is 85[°] or more and 95[°] or less. The roll-shaped opposing part 20 rotates in the direction opposite to the conveyance direction DR1 in a plane orthogonal to the width direction DR2.

[0015] In the first embodiment, the opposing part 20 faces the press roll 90 with the base material 2 interposed therebetween. The opposing part 20 presses the base material 2 against the press roll 90. The opposing part 20 presses the powder P supplied by the supply part 10 against the base material 2 to make the thickness of the powder P adhering to the base material 2 uniform.

[0016] (Guide part 30) In the first embodiment, the guide part 30 has a plate shape and is also referred to as a shooter. The guide part 30 is obliquely arranged so as to extend downward as it advances in the conveyance direction DR1 in a side view. The guide part 30 guides the powder P supplied from the supply part 10 to the base material 2 conveyed in the conveyance direction DR1. The powder P is carried to the base material 2 being conveyed along the surface of the guide part 30. The guide part 30 is arranged on the upstream side of the opposing part 20 in the conveyance direction DR1. The guide part 30 is arranged on the upstream side of the supply part 10 in the conveyance direction DR1.

[0017] (Adjusting part 40) Figures 3 and 4A are schematic plan views when the manufacturing apparatus 1 shown in Fig. 2 is viewed from above. In Figs. 3 and 4A, the description of the supply unit 10 and the guide unit 30 is omitted. Fig. 4B is a cross-sectional view taken along the line A1-A1 of Fig. 3, showing a state where the deformation part 42 is not rotated. Fig. 4B(b) is a view showing Fig. 4B(a) with the fixing part 43 omitted. The manufacturing apparatus 1 according to the first embodiment further includes an adjustment unit 40. The adjustment unit 40 is provided at the end 21 of the opposing part 20 in the width direction DR2, and adjusts the amount of the powder P guided to the end 21.

[0018] In the first embodiment, the adjustment unit 40 may include a hinge 41, a plate-shaped deformation part 42, and a plate-shaped fixing part 43. The plate thickness of the deformation part 42 and the fixing part 43 can be appropriately set as long as it can have a desired strength. As an example, it can be set to 10 mm to 50 mm. The hinge 41 is provided so as to coincide with the upstream end of the opposing part 20 in the transport direction DR1.

[0019] The fixing part 43 is provided at the end 21. The downstream end 43a of the fixing part 43 in the transport direction DR1 may be located downstream of the midpoint 20a of the opposing part 20 in the transport direction DR1. In other words, it may be located downstream of the position where the distance between the opposing part 20 and the base material 2 is the closest. Thereby, in the region downstream of the downstream end 43a of the fixing part 43 (the region where the fixing part 43 is not provided), the powder P is in a state of being surely adhered to the adhesive layer 3 of the base material 2 by the opposing part 20.

[0020] The deformation part 42 is a member that deforms, rotates, moves, etc. In this embodiment, a configuration that rotates is exemplified. The deformation part 42 is rotatable with respect to the direction in which the fixing part 43 extends (transport direction DR1) via the hinge 41. In Fig. 3, the deformation part 42 rotates inward in the width direction DR2 at a rotation angle of θ1. Thus, the adjustment unit 40 according to the first embodiment is configured to be rotatable with respect to the transport direction DR1.

[0021] FIG. 4A is a schematic plan view showing the state of the adjustment unit 40 when the deformation part 42 is open toward the outside in the width direction DR2. The adjustment unit 40 according to the first embodiment may adjust the amount of the powder P guided to the end portion 21 according to the amount of the powder P covering the base material 2. Specifically, the adjustment unit 40 may adjust the amount of the powder P guided to the vicinity of the end portion 21 according to the so-called deposition (the amount of the powder P per unit area of the surface of the base material 2) in the vicinity of the end portion 21. That is, the adjustment unit 40 according to the first embodiment may adjust the angle at which the deformation part 42 rotates according to the deposition in the vicinity of the end portion 21.

[0022] For example, as shown in FIG. 4A, when the deformation part 42 is open at the rotation angle θ2 toward the outside in the width direction DR2, the amount of the powder P guided to the end portion 21 increases. And, for example, as shown in FIG. 3, when the deformation part 42 is open at the rotation angle θ1 toward the inside in the width direction DR2, the amount of the powder P guided to the end portion 21 decreases. In this way, the adjustment unit 40 may adjust the angle at which the deformation part 42 opens to adjust the amount of the powder P guided to the end portion 21. Incidentally, assuming that the rotation angle θ in the direction in which the deformation part 42 closes toward the inside in the width direction DR2 is positive and the rotation angle in the direction in which the deformation part 42 opens toward the outside in the width direction DR2 is negative, the range of the rotation angle θ of the deformation part 42 is, as an example, -5.0 [°] ≤ θ ≤ 5.0 [°], and preferably -1.0 [°] ≤ θ ≤ 1.0 [°], and more preferably -0.2 [°] ≤ θ ≤ 0.2 [°]. Also, it is preferable that the rotation angle θ can be set in steps of 0.1 [°] within the above range. The preferred range of the rotation angle θ will be described more specifically in the examples described later.

[0023] In a side view, the deformation part 42 has, as an example, a shape in which a right triangle is placed with the sharpest point among the three vertices facing downward, and is fixed to the hinge 41.

[0024] Specifically, one side of the right triangle formed by the deformation part 42 (here, the longest side of the right triangle) contacts and slides on the guide part 30. Another side is connected to the hinge 41. Note that the shape of the deformation part 42 in side view is not limited to a right triangle and can adopt various shapes, as long as the shape can prevent the powder P from spilling. In other words, in side view, the lower end 30a of the guide part 30 (the nip point between the guide part 30 and the base material 2) is aligned with the lower end 41a of the hinge 41, and the deformation part 42 is provided so as to fill the space between the guide part 30 and the hinge 41. Thereby, the space communicating to the outside around the lower end 41a of the hinge 41 can be eliminated, and the powder P supplied to the base material 2 (more specifically, the adhesive layer 3 of the base material 2) by the guide part 30 will not spill outside.

[0025] As shown in FIG. 4B, the deformation part 42 has a deformation part main body 42a and an elastic member 42b.

[0026] The deformation part main body 42a constitutes generally the entire shape of the deformation part 42. The material of the deformation part main body 42a is preferably one with high wear resistance, and for example, resin or metal can be adopted. In the case of resin, acrylic resin (PMMA), polycarbonate resin (PC), polyvinyl chloride resin (PVC), polyethylene terephthalate resin (PET), etc. can be used, and acrylic resin is preferred from the viewpoints of wear resistance and impact resistance, etc. In the case of metal, stainless steel material (SUS), aluminum alloy, and those obtained by hard chromium plating treatment on these metals and steel materials can be used. In the case of stainless steel material (SUS), in particular, martensitic stainless steel can be preferably used.

[0027] The elastic member 42b is attached to a portion that faces and slides against the guide portion 30 of the deformation portion main body 42a. The purpose of providing the elastic member 42b is as follows. That is, with respect to the axial direction of the hinge 41 (the vertical direction in the drawing), the contact portion of the deformation portion 42 with the guide portion 30 is oblique. Therefore, when the deformation portion 42 in a state without the elastic member 42b (that is, a configuration with only the deformation portion main body 42a) is rotated about the hinge 41 as the axis, a gap is generated between the deformation portion 42 and the guide portion 30. Since the powder P is fine, there is a risk of spilling from the gap. Therefore, in the deformation portion main body 42a, an elastic member 42b is provided at a portion that contacts the guide portion 30. The elastic member 42b is in a state of being pressed against the guide portion 30 and elastically deformed, and in the rotation within the above rotation range, the state of being pressed against the guide portion 30 is maintained.

[0028] The material of the elastic member 42b is, for example, rubber, and more specifically, natural rubber (NR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), acrylonitrile rubber (NBR), butyl rubber (IIR), ethylene-propylene rubber (EPDM), urethane rubber (U), silicone rubber (Si), fluororubber (FKM), chlorosulfonated polyethylene rubber (CSM), etc. can be used. From the viewpoints of mechanical strength and abrasion resistance, natural rubber, urethane rubber, and styrene-butadiene rubber can be preferably used.

[0029] (Function and effect) As described above, the manufacturing apparatus 1 according to the first embodiment includes a supply unit 10, a facing unit 20, and an adjustment unit 40. The adjustment unit 40 is provided at the end 21 of the facing unit 20 in the width direction DR2 and adjusts the amount of the powder P guided to the end 21. Generally, compared with the portions other than the vicinity of the end 21 of the facing unit 20, the variation in deposition (the amount of powder per unit area of the surface of the base material 2) in the vicinity of the end 21 of the facing unit 20 is large. However, in the first embodiment, by providing the adjustment unit 40, the amount of the powder P guided to the end 21 of the facing unit 20 can be adjusted, so that the variation in deposition in the vicinity of the end 21 of the facing unit 20 can be suppressed. Thereby, the powder P can be uniformly adhered to the base material 2. Therefore, the powder P can be uniformly crimped to the base material 2.

[0030] Furthermore, the adjustment unit 40 may be configured to be rotatable with respect to the transport direction DR1. Thereby, a mechanism for adjusting the amount of the powder P guided to the end 21 can be simply configured.

[0031] Furthermore, the adjustment unit 40 may adjust the amount of the powder P guided to the end 21 according to the amount of the powder P covering the base material 2. By measuring the amount of the powder P (deposition) covering the base material 2 and adjusting the amount of the powder P guided to the end 21, the powder P can be more accurately and uniformly adhered to the base material 2.

[0032] (Modification 1) FIG. 4C shows a side view of the manufacturing apparatus 1 according to Modification 1. In the manufacturing apparatus 1 according to Modification 1, a part of the region on the downstream side of the fixing portion 43 (the upper right region in the drawing) has a shape as if it is cut obliquely, and the axis of the facing portion 20 is not supported by the fixing portion 43 of the adjustment unit 40, but is rotatably supported by a member different from the fixing portion 43.

Examples

[0033] Examples will be described below. In order to calculate the appropriate range of the rotation angle θ, evaluation was performed under the following conditions.

[0034] <Implementation Conditions> The rotation angle (θ1 in FIG. 3) in the closing direction toward the inner side in the width direction was defined as positive, and the rotation angle (θ2 in FIG. 4A) in the opening direction toward the outer side in the width direction DR2 was defined as negative, and the relationship between the rotation angle θ and the amount of powder near the end was evaluated.

[0035] <Evaluation results> FIG. 5 is a graph plotting the relationship between the amount of powder at the end and the rotation angle based on the current implementation conditions. The horizontal axis in FIG. 5 indicates the amount of powder at the end, and the vertical axis indicates the rotation angle of the optimal rotating part with respect to the amount of powder at the end. Note that the "amount of powder at the end" indicates the ratio between the average value of the amount of powder adhering to the base material when viewed over the entire base material and the amount of powder adhering to the base material near the end. For example, in the graph of FIG. 5, when the amount of powder at the end is 0.9 (90%), it means that the amount of powder near the end is 10% less than the above average value. And the graph of FIG. 5 shows that when the amount of powder at the end is 0.9, the optimal rotation angle is approximately -1.0 [°].

[0036] As an example, as shown in FIG. 5, it can be seen that when the rotation angle θ is -1.0 [°] ≤ θ ≤ 1.0 [°], the ratio between the amount of powder near the end and the above average value is within ±10%. To control the amount of powder more precisely, preferably, -0.2° ≤ θ ≤ 0.2°. When the implementation conditions are different, the optimal amount of powder can be obtained by appropriately adjusting the rotation angle and the like.

[0037] <Second Embodiment> FIG. 6 is a schematic cross-sectional view of the manufacturing apparatus 1 for an electrode foil according to the second embodiment. FIG. 7 is a plan view when the manufacturing apparatus 1 shown in FIG. 6 is viewed from above. Note that in FIG. 7, the description of the guide part 30 and the supply part 10 is omitted. The manufacturing apparatus 1 according to the second embodiment is different from the first embodiment in that it includes a stirring part 50.

[0038] As shown in FIG. 6, the stirring unit 50 according to the second embodiment is provided between the opposing unit 20 and the guide unit 30. The stirring unit 50 according to the second embodiment stirs the powder P1 existing between the opposing unit 20 and the guide unit 30 by rotating. In the second embodiment, the stirring unit 50 rotates counterclockwise.

[0039] As shown in FIG. 7, the stirring unit 50 according to the second embodiment has a shape extending in the width direction DR2. The stirring unit 50 according to the second embodiment may include a drive unit 51 and blade parts 52. By the drive unit 51 rotating the blade parts 52, the powder P is stirred. As shown in FIG. 7, the blade parts 52 may be configured in a direction in which the powder P goes toward the inside in the width direction DR2.

[0040] As described above, the manufacturing apparatus 1 according to the second embodiment includes a supply unit 10, an opposing unit 20, a guide unit 30, and a stirring unit 50. By providing the stirring unit 50, it is possible to suppress the formation of powder lumps of the powder P in the region R between the opposing unit 20 and the guide unit 30. Thereby, the powder P can be adhered to the base material 2 without unevenness. Therefore, the powder P can be uniformly pressure-bonded to the base material 2.

[0041] Furthermore, the stirring unit 50 may adjust the degree of stirring according to the amount of the powder P covering the base material 2. More specifically, for example, the rotation speed of the stirring unit 50 may be adjusted according to the deposition (the amount of the powder P per unit area of the surface of the base material 2). Thereby, the powder P can be more accurately and uniformly pressure-bonded to the base material 2.

[0042] (Modification 2) FIG. 8 is a schematic cross-sectional view of the manufacturing apparatus 1 for an electrode foil in Modification 2. FIG. 9 is a plan view when the manufacturing apparatus 1 shown in FIG. 8 is viewed from above. As shown in FIG. 8, a flat plate 80 may be provided between the press roll 90 and the opposing unit 20. And in the modification, the opposing unit 20 may press the plate 80 via the base material 2 to adhere the powder P to the base material 2.

[0043] Further, as shown in FIG. 9, the stirring unit 50 in the modification may include a plurality of drive units 51. Further, the blade unit 52 in the modification may have a spiral shape.

[0044] <Third Embodiment> FIG. 10 is a schematic cross-sectional view of the manufacturing apparatus 1 according to the third embodiment. The manufacturing apparatus 1 according to the third embodiment includes a flow path setting unit 60, which is different from the first embodiment. The flow path setting unit 60 according to the third embodiment is provided between the opposing unit 20 and the guide unit 30 and sets the flow path of the powder P1 existing between the opposing unit 20 and the guide unit 30. The flow path setting unit 60 according to the third embodiment has a plate-like shape extending in the width direction DR2.

[0045] By providing the flow path setting unit 60, the region R between the opposing unit 20 and the guide unit 30 is divided into a region R1 and a region R2. That is, a region R1 is formed between the guide unit 30 and the flow path setting unit 60, and a region R2 is formed between the opposing unit 20 and the flow path setting unit 60.

[0046] The region R1 is a storage unit in which the powder P supplied from the supply unit 10 is stored. The powder P supplied from the supply unit 10 first lands on the storage unit. In the vertical direction DR3 (= the direction in which gravity acts, the up-and-down direction), the height of the upper edge 61 of the flow path setting unit is higher than the height of the upper surface 63 of the powder P stored in the storage unit (region R1).

[0047] The region R2 is a backflow path in which the powder P supplied to the base material 2 flows back. The flow of the powder P supplied to the base material 2 will be described. The supply unit 10 according to the third embodiment first supplies the powder P to the storage unit (region R1). Then, the powder P supplied to the region R1 is conveyed to the base material 2 along the D1 direction. A part of the powder P conveyed to the base material 2 is conveyed in the conveyance direction DR1 as it is. Another part of the powder P conveyed to the base material 2 is conveyed to the upper edge 61 of the flow path setting unit along the D2 direction by the opposing unit 20. That is, the powder P flows back toward the upper edge 61. Then, the powder P that has reached the upper edge 61 gets over the flow path setting unit and lands on the upper surface 63 (see arrow D3).

[0048] Further, in a cross-section orthogonal to the width direction DR2, a first interval t1 between the flow path setting portion 60 and the opposing portion 20 is larger than a second interval t2 between the opposing portion 20 and the base material 2. The first interval t1 is the shortest distance between the flow path setting portion 60 and the opposing portion 20. The second interval t2 is the shortest distance between the opposing portion 20 and the base material 2 (adhesive layer 3).

[0049] Also, in a cross-section orthogonal to the width direction DR2, the second interval t2 is smaller than a third interval t3 between the lower end edge 62 of the flow path setting portion 60 in the vertical direction DR3 and the base material 2 (adhesive layer 3). The third interval t3 is the shortest distance between the lower end edge 62 and the base material 2 (adhesive layer 3).

[0050] As described above, the manufacturing apparatus 1 for the electrode foil according to the third embodiment includes a supply unit 10, an opposing unit 20, a guide unit 30, and a flow path setting unit 60. By providing the flow path setting unit 60, it is possible to suppress the formation of powder piles of the powder P in the region R between the opposing unit 20 and the guide unit 30. Thereby, the powder P can be uniformly adhered to the base material 2. Therefore, the powder P can be uniformly pressure-bonded to the base material 2.

[0051] Furthermore, in the vertical direction DR3, the height of the upper end edge 61 of the flow path setting portion 60 may be higher than the height of the upper surface 63 of the powder P stored in the storage portion (region R1). Thereby, since the powder P flowing back from the reverse flow path (region R2) can be flowed back into the storage portion (region R1) again, the powder P can be effectively reused.

[0052] Furthermore, the manufacturing apparatus 1 for the electrode foil according to the third embodiment may include a suction unit 70 (not shown) that sucks the powder P accumulated in the reverse flow path (region R2). Thereby, even if there is no limitation on the height of the upper end edge 61 as described above, the powder P can be effectively reused.

[0053] <Fourth Embodiment> FIG. 11 is a schematic top view of a portion of the manufacturing apparatus 1 according to the fourth embodiment. FIG. 12 is a schematic side view of the manufacturing apparatus 1. FIG. 13 is a cross-sectional view taken along the line B1-B1 of FIG. 11. FIG. 14 is a cross-sectional view taken along the line B2-B2 of FIG. 13, showing a state in which the deformation portion 42 is not rotated. FIG. 15 shows a state in which the deformation portion 42 has been rotated inward. This embodiment differs from the first embodiment in the configuration of the adjustment portion 40, and the following description will mainly focus on the different parts, with the same parts being omitted where appropriate. In this embodiment, a drive unit 95 such as a motor that drives the opposing portion 20 is provided.

[0054] A changing portion adjustment screw 44 (a component corresponding to the hinge 41 of the first embodiment) is provided between the upstream end 20b of the facing portion 20 in the conveying direction DR1 and the rotation axis of the facing portion 20. A deformation portion 42 is attached to the lower end of the changing portion adjustment screw 44. By adjusting the amount of screwing of the changing portion adjustment screw 44, the rotation angle θ of the deformation portion 42 can be adjusted.

[0055] The deforming portion 42 has a substantially trapezoidal shape in a side view, and the slope on the downstream side in the conveying direction DR1 is shaped to fit between the facing portion 20 and the base material 2 (adhesive layer 3). An upstream end 42d of the deforming portion 42 coincides with the lower end 30a of the guide portion 30.

[0056] The fixed portion 43 is provided with a movable portion placement portion 49 that penetrates in the width direction DR2 as a space for placing the deformable portion 42 (see FIGS. 12 and 13).

[0057] Since the end 42c of the deformation portion 42 in the conveying direction DR1 is recessed under the opposing portion 20, even when the deformation portion 42 rotates, it does not come into contact with the opposing portion 20, and the width of the powder P in the width direction DR2 can be adjusted at the position (or a position close to that position) where the powder P is pressed against the adhesive layer 3 by the opposing portion 20.

[0058] Fifth Embodiment Figs. 16 and 17 are schematic top views of a part of the manufacturing apparatus 1 according to the fifth embodiment. In the present embodiment, in the adjustment unit 40, the deformation part 42 is provided as a part of the fixing part 43 and has a flexible structure (a structure that elastically deforms). Further, the adjustment unit 40 has a pressure applying part 47 that bends the deformation part 42.

[0059] As the deformation part 42, a member that elastically deforms, for example, a member such as resin or rubber can be adopted. Also, as described in the first embodiment, in the case of rotation, the rotation angle θ is in the range of ±5°, preferably in the range of ±1°, and more preferably in the range of ±0.2°. Therefore, since the amount of deformation in this embodiment is small, depending on the target amount of deformation, a metal plate such as SUS can also be used.

[0060] A second fixing part 45 that does not deform is provided at a position on the downstream side in the conveyance direction DR1 of the deformation part 42, more specifically, at a position corresponding to the hinge 41 of the first embodiment or the change part adjustment screw 44 of the fourth embodiment. For the second fixing part 45, for example, a metal bar or the like can be used.

[0061] The pressure applying part 47 has, for example, a screw-shaped pressure applying part main body 47a and a position fixing part 47b that fixes the position of the pressure applying part main body 47a. The position fixing part 47b has a screw hole screwed so as to correspond to the screw of the pressure applying part main body 47a.

[0062] By screwing the pressure applying part main body 47a into the position fixing part 47b and abutting the tip of the pressure applying part main body 47a against the outer surface 42f of the deformation part 42, the inner surface 42g of the deformation part 42 deforms so as to protrude inward. As a result, in the same manner as when the deformation part 42 rotates, the width in the width direction DR2 of the powder P landing on the base material 2 (adhesive layer 3) can be adjusted.

[0063] In addition, when it is desired to deform the deformation part 42 so as to open outward, the state in which the deformation part 4 is opened outward in advance may be set as the initial value, or the structure in which the tip of the pressure applying part main body 47a is fixed to the deformation part 42 may be adopted.

[0064] The embodiments of the present invention have been described above with reference to the drawings, but these are examples of the present invention, and various configurations other than the above can also be adopted.

[0065] In the embodiment, the opposing portion 20 may have a plate-like shape instead of a cylindrical shape.

[0066] In the first embodiment, the manufacturing apparatus 1 for the electrode foil may further include a stirring portion 50 in addition to the adjusting portion 40.

[0067] In the first embodiment, the manufacturing apparatus 1 for the electrode foil may further include a flow path setting portion 60 in addition to the adjusting portion 40.

[0068] Examples of reference embodiments are appended below. 1. A supply unit that supplies powder to a sheet-like base material, An opposing portion that extends in the width direction of the base material, which is substantially orthogonal to the conveyance direction in which the base material is conveyed, and presses the powder supplied by the supply unit against the base material, An adjusting unit that is provided at an end portion of the opposing portion in the width direction and adjusts the amount of the powder guided to the end portion, and a manufacturing apparatus for an electrode foil. 2. In the manufacturing apparatus for an electrode foil according to 1., The adjusting unit is configured to be rotatable with respect to the conveyance direction, and a manufacturing apparatus for an electrode foil. 3. In the manufacturing apparatus for an electrode foil according to 1., The adjusting unit is configured to be deformable with respect to the width direction, and a manufacturing apparatus for an electrode foil. 4. In the manufacturing apparatus for an electrode foil according to any one of 1. to 3., The adjusting unit adjusts the amount of the powder guided to the end portion according to the amount of the powder covering the base material, and a manufacturing apparatus for an electrode foil. 5. In the manufacturing apparatus for an electrode foil according to any one of 1. to 4., The opposing portion has a cylindrical shape, and a manufacturing apparatus for an electrode foil. 6. In the manufacturing apparatus for an electrode foil according to any one of 1. to 5., a guide part that is arranged on the upstream side in the conveyance direction with respect to the facing part and guides the powder supplied from the supply part to the base material; and a stirring part that is provided between the facing part and the guide part and stirs the powder existing between the facing part and the guide part. The manufacturing apparatus for an electrode foil further includes the stirring part. 7. In the manufacturing apparatus for an electrode foil according to any one of 1. to 6., a guide part that is arranged on the upstream side in the conveyance direction with respect to the facing part and guides the powder supplied from the supply part to the base material; and a flow path setting part that is provided between the facing part and the guide part and sets the flow path of the powder existing between the facing part and the guide part. The manufacturing apparatus for an electrode foil further includes the flow path setting part. 8. A battery having an electrode foil manufactured using the manufacturing apparatus for an electrode foil according to any one of claims 1 to 7.

Explanation of Signs

[0069] 1 Manufacturing apparatus 2 Base material 3 Adhesive layer 10 Supply part 20 Facing part 21 End part 30 Guide part 40 Adjusting part 41 Hinge 42 Changing part 42a Deformation part main body 42b Elastic member 43 Fixing part 44 Changing part adjusting screw 45 Second fixing part 47 Pressure applying part 50 Stirring part 51 Driving part 52 Blade part 60 Flow path setting part 80 Plate 90 Press roll DR1 Conveyance direction DR2 Width direction DR3 vertical direction P powder

Claims

1. A supply unit for supplying powder to a sheet-shaped base material, An opposing part that extends in the width direction of the base material, which is substantially orthogonal to the transport direction in which the base material is transported, and presses the powder supplied by the supply unit against the base material, An electrode foil manufacturing apparatus comprising an adjustment unit provided at an end of the opposing part in the width direction and for adjusting the amount of the powder guided to the end.

2. In the electrode foil manufacturing apparatus according to Claim 1, The adjustment unit is configured to be rotatable with respect to the transport direction. An electrode foil manufacturing apparatus.

3. In the electrode foil manufacturing apparatus according to Claim 1, The adjustment unit is configured to be deformable with respect to the width direction. An electrode foil manufacturing apparatus.

4. In the electrode foil manufacturing apparatus according to any one of Claims 1 to 3, The adjustment unit adjusts the amount of the powder guided to the end according to the amount of the powder covering the base material. An electrode foil manufacturing apparatus.

5. In the electrode foil manufacturing apparatus according to any one of Claims 1 to 3, The opposing part has a cylindrical shape. An electrode foil manufacturing apparatus.

6. In the electrode foil manufacturing apparatus according to any one of Claims 1 to 3, A guide part that is disposed upstream of the opposing part in the transport direction and guides the powder supplied from the supply unit to the base material, An electrode foil manufacturing apparatus further comprising a stirring unit provided between the opposing part and the guide part and for stirring the powder present between the opposing part and the guide part.

7. In the electrode foil manufacturing apparatus according to any one of Claims 1 to 3, A guide part that is disposed upstream of the opposing part in the transport direction and guides the powder supplied from the supply unit to the base material, ​ ​ ​

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