Winding machine, method for connecting electrode material, tab forming machine, method for recycling electrode material, method for manufacturing electrode material, and method for manufacturing electrode body

Abstract

The winding machine (30) includes a negative electrode material supply device (31), an outer diaphragm supply device (33), and a winding device (35). The negative electrode material supply device (31) has a first receiving section (31b) for receiving sheet-like negative electrode material (1), a second receiving section (31c) for receiving sheet-like negative electrode material (1), and a pull-out section (31d). The pull-out section (31d) includes a second pull-out roller (m2) that pulls out from the second receiving section (31c) while holding the front end (1U) of the negative electrode material (1) received in the second receiving section (31c).

Description

Technical Field

[0001] This disclosure relates to a winding machine, a method for connecting electrode materials, a tab forming machine, a method for recycling electrode materials, a method for manufacturing electrode materials, and a method for manufacturing electrode bodies. Background Technology

[0002] Previously, there were known methods for forming an electrode body by winding an electrode material wound on a spool and a diaphragm wound on a spool (for example, see Patent Document 1).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2009-252467 Summary of the Invention

[0006] The technical problem that the invention aims to solve

[0007] However, the processing of electrode materials is complex.

[0008] The purpose of this disclosure is to provide a winding machine that can easily process electrode materials, a method for connecting electrode materials, an electrode tab forming machine, a method for recycling electrode materials, a method for manufacturing electrode materials, and a method for manufacturing electrode bodies.

[0009] Technical solutions for solving technical problems

[0010] The winding machine disclosed herein includes an electrode material supply device, a diaphragm supply device, and a winding device. The electrode material supply device has a second receiving portion for receiving sheet-shaped second electrode material and a pulling portion for pulling the second electrode material out of the second receiving portion. The diaphragm supply device supplies a sheet-shaped diaphragm. The winding device winds the second electrode material and the diaphragm. The pulling portion includes a pull-out roller that pulls the second electrode material out of the second receiving portion while holding the front end of the second electrode material.

[0011] The tab forming machine disclosed herein includes a tab forming apparatus and an electrode material recovery apparatus. The tab forming apparatus forms sheet-like electrode material by forming tabs on sheet-like raw material. The electrode material recovery apparatus has a second receiving section for receiving the electrode material and a pulling section for pulling the electrode material into the second receiving section. The pulling section includes a pull-out roller that pulls out the material while holding the front end of a guide belt, which is mounted on a spool disposed in the second receiving section.

[0012] The method for manufacturing the electrode material and electrode body disclosed herein includes the following steps: forming a sheet-like electrode material by forming a tab on a sheet-like raw material in a tab forming machine; winding the electrode material in a roll of a conveying device disposed in the tab forming machine; removing the conveying device from the tab forming machine; installing the conveying device on a winding machine; pulling the electrode material wound on the roll from the conveying device; and forming an electrode body by overlapping and winding the electrode material and a sheet-like diaphragm.

[0013] Invention Effects

[0014] According to this disclosure, a winding machine that can easily process electrode materials, a method for connecting electrode materials, an electrode tab forming machine, a method for recycling electrode materials, a method for manufacturing electrode materials, and a method for manufacturing electrode bodies can be provided. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the structure of the electrode manufacturing system according to the embodiment.

[0016] Figure 2 This is a side view schematically illustrating the structure of the conveying device according to the embodiment.

[0017] Figure 3 This is a side view schematically illustrating the structure of the conveying device according to the embodiment.

[0018] Figure 4 This is a front view schematically showing the structure of the conveying device according to the embodiment.

[0019] Figure 5 This is a front view schematically showing the structure of the conveying device according to the embodiment.

[0020] Figure 6 This is a side view showing the structure of the roll according to the embodiment.

[0021] Figure 7 This is a schematic diagram illustrating the operation of the cover in the implementation method.

[0022] Figure 8 This is a schematic diagram illustrating the operation of the cover in the implementation method.

[0023] Figure 9 This is a schematic diagram illustrating the structure and operation of the clamping device in the embodiment.

[0024] Figure 10 This is a schematic diagram illustrating the structure and operation of the clamping device in the embodiment.

[0025] Figure 11 This is a schematic diagram illustrating the structure and operation of the clamping device in the embodiment.

[0026] Figure 12 This is a schematic diagram illustrating the structure and operation of the clamping device in the embodiment.

[0027] Figure 13 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0028] Figure 14 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0029] Figure 15 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0030] Figure 16 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0031] Figure 17 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0032] Figure 18 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0033] Figure 19 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0034] Figure 20 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0035] Figure 21 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0036] Figure 22 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0037] Figure 23 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0038] Figure 24 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0039] Figure 25 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0040] Figure 26 This is a schematic diagram illustrating the structure and operation of the pull-in section in the implementation method.

[0041] Figure 27This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0042] Figure 28 This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0043] Figure 29 This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0044] Figure 30 This is a schematic diagram illustrating the structure and operation of the pull-out part in the implementation method.

[0045] Figure 31 This is a schematic diagram illustrating the structure and operation of the pull-out part in the implementation method.

[0046] Figure 32 This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0047] Figure 33 This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0048] Figure 34 This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0049] Figure 35 This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0050] Figure 36 This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0051] Figure 37 This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0052] Figure 38 This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0053] Figure 39 This is a schematic diagram illustrating the structure and operation of the pull-out part in the embodiment.

[0054] Figure 40 This is a schematic diagram illustrating the structure and operation of the pull-out part in the implementation method. Detailed Implementation

[0055] (Electrode manufacturing system 100)

[0056] Figure 1This is a schematic diagram showing the structure of the electrode manufacturing system 100 according to an embodiment. The electrode manufacturing system 100 is used to manufacture electrode bodies 5. Electrode bodies 5 are used in electronic components such as lithium secondary batteries, lithium capacitors, and double-layer capacitors. In this embodiment, the electrode body 5 has a pair of positive and negative tab terminals.

[0057] like Figure 1 As shown, the electrode manufacturing system 100 includes a negative electrode tab forming machine 10, a positive electrode tab forming machine 20, a winding machine 30, and multiple conveying devices 40.

[0058] [Negative electrode tab forming machine 10]

[0059] The negative electrode tab forming machine 10 includes a negative electrode wide-width raw material supply device 11, a tab forming device 12, and a negative electrode material recycling device 13. The negative electrode wide-width raw material supply device 11 is an example of the "raw material supply device" of this disclosure. The negative electrode material recycling device 13 is an example of the "electrode material recycling device" of this disclosure.

[0060] A wide-width negative electrode material supply device 11 is disposed on the opposite side of the negative electrode material recycling device 13, across the tab forming device 12. The wide-width negative electrode material supply device 11 has a frame 11a, a hanging shaft 11b, and a pull-out section 11c. The frame 11a is a box for housing the hanging shaft 11b and the pull-out section 11c. The hanging shaft 11b is driven to rotate by a servo motor (not shown). A sheet-like wide-width negative electrode material 1a is wound on the hanging shaft 11b. The wide-width negative electrode material 1a is a wide strip composed of a sheet-like negative electrode foil (e.g., copper foil) and a negative electrode active material (e.g., carbon material) coated on the surface of the negative electrode foil. The pull-out section 11c feeds the wide-width negative electrode material 1a pulled from the hanging shaft 11b toward the tab forming device 12. The pull-out section 11c consists of multiple rollers.

[0061] A tab forming device 12 is disposed between a negative electrode wide-width raw material supply device 11 and a negative electrode material recycling device 13. The tab forming device 12 includes a frame 12a, a support roller 12b, a tab forming section 12c, a slitting machine 12d, and a pair of feed rollers 12e. The frame 12a is a housing for the support roller 12b, the tab forming section 12c, the slitting machine 12d, and the pair of feed rollers 12e. The support roller 12b supports the negative electrode wide-width raw material 1a fed from the negative electrode wide-width raw material supply device 11 from below. The tab forming section 12c faces the surface of the negative electrode wide-width raw material 1a. The tab forming section 12c forms tabs on both sides of the negative electrode wide-width raw material 1a in the width direction. The tabs are formed into a desired shape (zigzag, curved, etc.). A laser emitting device or the like that that emits laser light can be used as the tab forming section 12c. The slitting machine 12d cuts the negative electrode wide-width raw material 1a with tabs formed along the center of the width direction. Thus, a single sheet of wide negative electrode raw material 1a is divided into two sheets of negative electrode material 1 along its length. A pair of feed rollers 12e are configured to hold the two sheets of negative electrode material 1 from above and below. The pair of feed rollers 12e are driven to rotate by a servo motor (not shown). The pair of feed rollers 12e deliver the two sheets of negative electrode material 1 to the negative electrode material recovery device 13.

[0062] The negative electrode material recycling device 13 is disposed on the opposite side of the negative electrode wide raw material supply device 11, across the tab forming device 12. The negative electrode material recycling device 13 includes a first recycling device 14 and a second recycling device 15.

[0063] The first recycling device 14 recycles one of the two negative electrode materials 1 fed from the tab forming device 12. The first recycling device 14 is disposed between the tab forming device 12 and the second recycling device 15. The first recycling device 14 has a frame 14a, a first storage section 14b, a second storage section 14c, and a pull-in section 14d. The frame 14a is a box for storing the first storage section 14b, the second storage section 14c, and the pull-in section 14d. The first storage section 14b and the second storage section 14c are opposite each other across the pull-in section 14d. The first storage section 14b and the second storage section 14c are spaces for storing the negative electrode material 1. In this embodiment, a conveying device 40 for recycling the negative electrode material 1 is disposed in the first storage section 14b and the second storage section 14c respectively. The pull-in section 14d is disposed between the first storage section 14b and the second storage section 14c. The pull-in section 14d pulls the negative electrode material 1 from the tab forming device 12 into either the first storage section 14b or the second storage section 14c. In this embodiment, pulling the negative electrode material 1 into the first storage section 14b or the second storage section 14c is synonymous with pulling the negative electrode material 1 into the conveying device 40 and winding it. The pull-in section 14d alternately switches the pulling of the negative electrode material 1 into the first storage section 14b and the second storage section 14c respectively. Specifically, the pull-in section 14d begins pulling the negative electrode material 1 into the conveying device 40 disposed in the second storage section 14c after the pulling of the negative electrode material 1 into the conveying device 40 disposed in the first storage section 14b is completed. The conveying device 40 filled with negative electrode material 1 (hereinafter referred to as the "filled conveying device") is removed from the first storage section 14b, and in its place, the conveying device 40 without the negative electrode material 1 wound (hereinafter referred to as the "empty conveying device") is installed in the first storage section 14b. After the filled conveying device 40 is stored in a designated location as needed, it is conveyed to the negative electrode material supply device 31 of the winding machine 30, which will be described later. When the negative electrode material 1 is pulled into the conveying device 40 located in the second storage section 14c, the filled conveying device 40 is replaced with the empty conveying device 40 in the same manner. The structure of the conveying device 40 will be described later.

[0064] The second recycling device 15 recycles the other of the two negative electrode materials 1 fed from the tab forming device 12. The second recycling device 15 has the same function and structure as the first recycling device 14. The second recycling device 15 has a frame 15a, a first storage section 15b, a second storage section 15c, and a pull-in section 15d. The frame 15a is a box for storing the first storage section 15b, the second storage section 15c, and the pull-in section 15d. The first storage section 15b and the second storage section 15c are opposite each other across the pull-in section 15d. The first storage section 15b and the second storage section 15c are spaces for storing the negative electrode material 1. In this embodiment, a conveying device 40 for recycling the negative electrode material 1 is respectively arranged in the first storage section 15b and the second storage section 15c. The pull-in section 15d is disposed between the first storage section 15b and the second storage section 15c. The pull-in section 15d pulls the negative electrode material 1 from the tab forming device 12 into either the first storage section 15b or the second storage section 15c. The pull-in section 15d alternately switches the pulling of the negative electrode material 1 into the first storage section 15b and the second storage section 15c. Specifically, the pull-in section 15d begins pulling the negative electrode material 1 into the conveying device 40 located in the second storage section 15c after the pulling of the negative electrode material 1 into the conveying device 40 located in the first storage section 15b is completed. The filled conveying device 40 is removed from the first storage section 15b, and an empty conveying device 40 is installed in the first storage section 15b. After being stored in a designated location as needed, the filled conveying device 40 is then transported to the negative electrode material supply device 31 of the winding machine 30, which will be described later. After the negative electrode material 1 is pulled into the conveying device 40 disposed in the second storage section 15c, the filled conveying device 40 is replaced with an empty conveying device 40 in the same manner.

[0065] The structure and operation of pull-in section 14d and pull-in section 15d will be described later.

[0066] [Positive electrode tab forming machine 20]

[0067] The positive electrode tab forming machine 20 has the same function and structure as the negative electrode tab forming machine 20. The positive electrode tab forming machine 20 includes a positive electrode wide-width raw material supply device 21, a tab forming device 22, and a positive electrode material recovery device 23. The positive electrode wide-width raw material supply device 21 is an example of the "raw material supply device" of this disclosure. The positive electrode material recovery device 23 is an example of the "electrode material recovery device" of this disclosure.

[0068] A wide-width positive electrode material supply device 21 is disposed on the opposite side of the positive electrode material recycling device 23, across the tab forming device 22. The wide-width positive electrode material supply device 21 has a frame 21a, a hanging shaft 21b, and a pull-out section 21c. The frame 21a is a box that houses the hanging shaft 21b and the pull-out section 21c. The hanging shaft 21b is driven to rotate by a servo motor (not shown). A sheet-like wide-width positive electrode material 2a is wound on the hanging shaft 21b. The wide-width positive electrode material 2a is a wide strip composed of a sheet-like positive electrode foil (e.g., aluminum foil) and a positive electrode active material (e.g., lithium metal oxide) coated on the surface of the positive electrode foil. The pull-out section 21c feeds the wide-width positive electrode material 2a pulled from the hanging shaft 21b toward the tab forming device 22. The pull-out section 21c consists of multiple rollers.

[0069] A tab forming apparatus 22 is positioned between a positive electrode wide-width raw material supply device 21 and a positive electrode material recycling device 23. The tab forming apparatus 22 includes a frame 22a, a support roller 22b, a tab forming section 22c, a slitting machine 22d, and a pair of feed rollers 22e. The frame 22a houses the support roller 22b, the tab forming section 22c, the slitting machine 22d, and the pair of feed rollers 22e. The support roller 22b supports the positive electrode wide-width raw material 2a fed from the positive electrode wide-width raw material supply device 21 from below. The tab forming section 22c faces the surface of the positive electrode wide-width raw material 2a. The tab forming section 22c forms tabs on both sides of the positive electrode wide-width raw material 2a in the width direction. The tabs are formed into a desired shape (zigzag, curved, etc.). A laser emitting device or similar device that emits laser light can be used as the tab forming section 22c. The slitting machine 22d cuts the positive electrode wide-width raw material 2a with tabs formed along the center of its width direction. Thus, a single sheet of wide positive electrode material 2a is divided into two sheets of positive electrode material 2 along its length. A pair of feed rollers 22e are configured to hold the two sheets of positive electrode material 2 from above and below. The pair of feed rollers 22e are driven to rotate by a servo motor (not shown). The pair of feed rollers 22e deliver the two sheets of positive electrode material 2 to the positive electrode material recovery device 23.

[0070] The positive electrode material recycling device 23 is disposed on the opposite side of the positive electrode wide raw material supply device 21, across the tab forming device 22. The positive electrode material recycling device 23 includes a first recycling device 24 and a second recycling device 25.

[0071] The first recycling device 24 recycles one of the two positive electrode materials 2 fed from the tab forming device 22. The first recycling device 24 is disposed between the tab forming device 22 and the second recycling device 25. The first recycling device 24 has a frame 24a, a first storage section 24b, a second storage section 24c, and a pull-in section 24d. The frame 24a is a box for storing the first storage section 24b, the second storage section 24c, and the pull-in section 24d. The first storage section 24b and the second storage section 24c are opposite each other across the pull-in section 24d. The first storage section 24b and the second storage section 24c are spaces for storing the positive electrode material 2. In this embodiment, a conveying device 40 for recycling the positive electrode material 2 is disposed in the first storage section 24b and the second storage section 24c respectively. This conveying device 40 has the same function and structure as the conveying device 40 used in the negative electrode tab forming machine 10 described above. A pull-in section 24d is disposed between the first storage section 24b and the second storage section 24c. The pull-in section 24d pulls the positive electrode material 2 from the tab forming device 22 into the first storage section 24b or the second storage section 24c. In this embodiment, pulling the positive electrode material 2 into the first storage section 24b or the second storage section 24c is synonymous with pulling the positive electrode material 2 into the conveying device 40 and winding it. The pull-in section 24d alternately switches the pulling of the positive electrode material 2 into the first storage section 24b and the second storage section 24c respectively. Specifically, the pull-in section 24d begins pulling the positive electrode material 2 into the conveying device 40 disposed in the second storage section 24c after the pulling of the positive electrode material 2 into the conveying device 40 disposed in the first storage section 24b is completed. The filled conveying device 40 is removed from the first storage section 24b, and an empty conveying device 40 is installed in the first storage section 24b. After the filled conveying device 40 is stored in a designated location as needed, it is conveyed to the positive electrode material supply device 32 of the winding machine 30, which will be described later. When the positive electrode material 2 is pulled into the conveying device 40 arranged in the second storage section 24c, the filled conveying device 40 is replaced with an empty conveying device 40 in the same manner.

[0072] The second recycling device 25 recycles the other of the two positive electrode materials 2 fed from the tab forming device 22. The second recycling device 25 has the same function and structure as the first recycling device 24. The second recycling device 25 has a frame 25a, a first storage section 25b, a second storage section 25c, and a pull-in section 25d. The frame 25a is a box for storing the first storage section 25b, the second storage section 25c, and the pull-in section 25d. The first storage section 25b and the second storage section 25c are opposite each other across the pull-in section 25d. The first storage section 25b and the second storage section 25c are spaces for storing the positive electrode material 2. In this embodiment, a conveying device 40 for recycling the positive electrode material 2 is respectively arranged in the first storage section 25b and the second storage section 25c. The pull-in section 25d is disposed between the first storage section 25b and the second storage section 25c. The pull-in section 25d pulls the positive electrode material 2 from the tab forming device 22 into either the first storage section 25b or the second storage section 25c. The pull-in section 25d alternately switches the pulling of the positive electrode material 2 into each of the first and second storage sections 25b. Specifically, the pull-in section 25d begins pulling the positive electrode material 2 into the conveying device 40 located in the second storage section 25c after the pulling of the positive electrode material 2 into the conveying device 40 located in the first storage section 25b is completed. The filled conveying device 40 is removed from the first storage section 25b, and an empty conveying device 40 is installed in the first storage section 25b. After being stored in a designated location as needed, the filled conveying device 40 is then transported to the positive electrode material supply device 32 of the winding machine 30, which will be described later. After the positive electrode material 2 is pulled into the conveying device 40 disposed in the second storage section 25c, the filled conveying device 40 is replaced with an empty conveying device 40 in the same manner.

[0073] The structure and operation of pull-in section 24d and pull-in section 25d will be described later.

[0074] [Winding machine 30]

[0075] The winding machine 30 includes a negative electrode material supply device 31, a positive electrode material supply device 32, an outer diaphragm supply device 33, an inner diaphragm supply device 34, and a winding device 35. The negative electrode material supply device 31 and the positive electrode material supply device 32 are examples of the "electrode material supply device" of this disclosure. The outer diaphragm supply device 33 and the inner diaphragm supply device 34 are examples of the "diaphragm supply device" of this disclosure.

[0076] The negative electrode material supply device 31 pulls the negative electrode material 1 from the conveying device 40 and supplies it to the winding device 35. The negative electrode material supply device 31 has a frame 31a, a first storage section 31b, a second storage section 31c, and a pull-out section 31d. The frame 31a is a box for storing the first storage section 31b, the second storage section 31c, and the pull-out section 31d. The first storage section 31b and the second storage section 31c are opposite each other across the pull-out section 31d. The first storage section 31b and the second storage section 31c are spaces for storing the negative electrode material 1. In this embodiment, the conveying device 40 for supplying the negative electrode material 1 is respectively arranged in the first storage section 31b and the second storage section 31c. The pull-out section 31d is disposed between the first storage section 31b and the second storage section 31c. The pull-out section 31d pulls the negative electrode material 1 out from either the first storage section 31b or the second storage section 31c. In this embodiment, pulling out the negative electrode material 1 from the first storage section 31b or the second storage section 31c is synonymous with pulling out the wound negative electrode material 1 from the conveying device 40. The negative electrode material 1 pulled out by the pull-out section 31d is supplied to the winding device 35. The pull-out section 31d alternately switches the pulling out of the negative electrode material 1 from the first storage section 31b and the second storage section 31c, respectively. Specifically, when the pull-out section 31d finishes pulling out the negative electrode material 1 from the conveying device 40 disposed in the first storage section 31b, it begins to pull out the negative electrode material 1 from the conveying device 40 disposed in the second storage section 31c. The empty conveying device 40 is removed from the first storage section 31b, and in its place, the filled conveying device 40 is installed in the first storage section 31b. After the empty conveying device 40 is stored in a designated location as needed, it is conveyed to the first recycling device 14 or the second recycling device 15 of the aforementioned negative electrode material recycling device 13. After the negative electrode material 1 is pulled out from the conveying device 40 located in the second storage section 31c, the empty conveying device 40 is replaced with a filled conveying device 40 using the same procedure. The structure and operation of the pull-out section 31d will be described later.

[0077] The positive electrode material supply device 32 pulls the positive electrode material 2 from the conveying device 40 and supplies it to the winding device 35. The positive electrode material supply device 32 has a frame 32a, a first storage section 32b, a second storage section 32c, and a pull-out section 32d. The frame 32a is a box for storing the first storage section 32b, the second storage section 32c, and the pull-out section 32d. The first storage section 32b and the second storage section 32c are opposite each other across the pull-out section 32d. The first storage section 32b and the second storage section 32c are spaces for storing the positive electrode material 2. In this embodiment, the conveying device 40 for supplying the positive electrode material 2 is respectively arranged in the first storage section 32b and the second storage section 32c. The pull-out section 32d is disposed between the first storage section 32b and the second storage section 32c. The pull-out section 32d pulls the positive electrode material 2 out from either the first storage section 32b or the second storage section 32c. In this embodiment, pulling out the positive electrode material 2 from the first storage section 32b or the second storage section 32c is synonymous with pulling out the wound positive electrode material 2 from the conveying device 40. The positive electrode material 2 pulled out by the pull-out section 32d is supplied to the winding device 35. The pull-out section 32d alternately switches the pulling out of the positive electrode material 2 from the first storage section 32b and the second storage section 32c, respectively. Specifically, the pull-out section 32d begins pulling out the positive electrode material 2 from the conveying device 40 disposed in the second storage section 32c after the pulling out of the positive electrode material 2 from the conveying device 40 disposed in the first storage section 32b is completed. The empty conveying device 40 is removed from the first storage section 32b, and in its place, the filled conveying device 40 is installed in the first storage section 32b. After the empty conveying device 40 is stored in a designated location as needed, it is conveyed to the first recycling device 24 or the second recycling device 25 of the aforementioned positive electrode material recycling device 23. When the positive electrode material 2 has been pulled out from the conveying device 40 located in the second storage section 32c, the empty conveying device 40 is replaced with a fully filled conveying device 40 following the same procedure. The structure and operation of the pull-out section 32d will be described later.

[0078] An outer diaphragm supply device 33 is disposed between the negative electrode material supply device 31 and the winding device 35. The outer diaphragm supply device 33 supplies an insulating outer diaphragm 3 to the winding device 35. The outer diaphragm supply device 33 has a frame 33a, a first storage section 33b, a second storage section 33c, a switching section 33d, and a pull-out section 33e. The frame 33a is a box that houses the first storage section 33b, the second storage section 33c, the switching section 33d, and the pull-out section 33e. The wound outer diaphragm 3 is stored in the first storage section 33b and the second storage section 33c. The first storage section 33b and the second storage section 33c can each use a removable box. The switching section 33d switches the supply source of the outer diaphragm 3 to either the first storage section 33b or the second storage section 33c. The pull-out section 33e feeds the outer diaphragm 3 toward the winding device 35. The pull-out section 33e consists of multiple rollers.

[0079] An inner diaphragm supply device 34 is disposed between the positive electrode material supply device 32 and the winding device 35. The inner diaphragm supply device 34 supplies an insulating inner diaphragm 4 to the winding device 35. The inner diaphragm supply device 34 has a frame 34a, a first storage section 34b, a second storage section 34c, a switching section 34d, and a pull-out section 34e. The frame 34a is a box that houses the first storage section 34b, the second storage section 34c, the switching section 34d, and the pull-out section 34e. The wound inner diaphragm 4 is stored in the first storage section 34b and the second storage section 34c. The first storage section 34b and the second storage section 34c can each use a detachable box. The switching section 34d switches the supply source of the inner diaphragm 4 to either the first storage section 34b or the second storage section 34c. The pull-out section 34e feeds the inner diaphragm 4 to the winding device 35. The pull-out section 34e consists of multiple rollers.

[0080] The winding device 35 forms an electrode body 5 by sequentially stacking and winding an outer diaphragm 3, a negative electrode material 1, an inner diaphragm 4, and a positive electrode material 2. The winding device 35 includes a frame 35a, a negative electrode material feeding section 35b, a positive electrode material feeding section 35c, an outer diaphragm feeding section 35d, an inner diaphragm feeding section 35e, and a winding shaft 35f. The frame 35a is a housing for the negative electrode material feeding section 35b, the positive electrode material feeding section 35c, the outer diaphragm feeding section 35d, the inner diaphragm feeding section 35e, and the winding shaft 35f. The negative electrode material feeding section 35b transports the negative electrode material 1 supplied from the negative electrode material supply device 31 via the outer diaphragm supply device 33 to the winding shaft 35f. The positive electrode material feeding section 35c transports the positive electrode material 2 supplied from the positive electrode material supply device 32 via the inner diaphragm supply device 34 to the winding shaft 35f. The outer diaphragm feed section 35d conveys the outer diaphragm 3 supplied from the outer diaphragm supply device 33 to the winding shaft 35f. The inner diaphragm feed section 35e conveys the inner diaphragm 4 supplied from the inner diaphragm supply device 34 to the winding shaft 35f. The winding shaft 35f is driven to rotate by a servo motor (not shown). As the winding shaft 35f rotates, an electrode body 5 is formed by sequentially stacking the outer diaphragm 3, the negative electrode material 1, the inner diaphragm 4, and the positive electrode material 2.

[0081] (Conveying device 40)

[0082] Figure 2 and Figure 3 This is a side view schematically showing the structure of the conveying device 40. Figure 4 and Figure 5 This is a schematic front view showing the structure of the conveying device 40. Figure 2 and Figure 4 In the middle, the braking device 46, described later, is in the braking state. Figure 3 and Figure 5 In the middle, the braking device 46 is in the released state.

[0083] As described above, the conveying device 40 is used for conveying the negative electrode material 1 between the negative electrode tab forming machine 10 and the winding machine 30, and for conveying the positive electrode material 2 between the positive electrode tab forming machine 20 and the winding machine 30. In the following description, the negative electrode material 1 and the positive electrode material 2 are collectively referred to as "electrode material 6".

[0084] The conveying device 40 is a so-called cartridge used for the convenient handling (specifically, conveying) of the electrode material 6. The conveying device 40 of this embodiment simplifies its structure by not equipping it with electrical components that require power. It should be noted that, in this specification, "conveyance" refers to movement from one location to another, and also includes the concept of temporary storage at a designated location during movement.

[0085] The conveying device 40 includes a housing 41, a drum 42, a support shaft 43, first and second power connectors 44a and 44b, first and second sealing parts 45a and 45b, a braking device 46, a baffle device 47, a traveling device 48, and a clamping device 49. The first and second power connectors 44a and 44b are examples of the "power connectors" of this disclosure. The first and second sealing parts 45a and 45b are examples of the "sealing parts" of this disclosure.

[0086] The housing 41 houses various components, including the reel 42. The housing 41 consists of a cover 41a and a base plate 41b. The cover 41a is mounted on the base plate 41b. The cover 41a is an external component that covers the components housed inside. The base plate 41b is a supporting component that supports the cover 41a and the components housed within it. The base plate 41b is supported by a traveling device 48. The shapes of both the cover 41a and the base plate 41b can be appropriately modified.

[0087] like Figure 2 and Figure 3 As shown, the housing 41 has a general-purpose insertion opening 41c and a sensing opening 41d. The general-purpose insertion opening 41c is a through hole formed on the front surface F1 of the housing 41. The general-purpose insertion opening 41c is used to insert the electrode material 6 or the lead strip 42b described later. A clamping device 49 is provided in the general-purpose insertion opening 41c. The sensing opening 41d is a through hole formed on the rear surface F2 of the housing 41. The sensing opening 41d is opposite to the drum 42 in a radial direction perpendicular to the axis of the support shaft 43 described later. The sensing opening 41d is used to allow the emitted light emitted from the outer diameter detection sensor S to pass through. Although in Figure 1 Not shown in the diagram, but the outer diameter detection sensor S is installed in each storage section of the negative electrode tab forming machine 10, the positive electrode tab forming machine 20, and the winding machine 30. The outer diameter detection sensor S detects the outer diameter of the electrode material 6. The outer diameter of the electrode material 6 is used to estimate the remaining amount of electrode material 6 wound on the spool 42. A baffle device 47, described later, is provided inside the sensing opening 41d. The opening and closing of the sensing opening 41d is switched by the baffle device 47.

[0088] like Figure 2 and Figure 3As shown, the housing 41 has a first edge sensor insertion hole 41e and a second edge sensor insertion hole 41f. The first edge sensor insertion hole 41e and the second edge sensor insertion hole 41f respectively penetrate the housing 41 in an axial direction parallel to the axis of the support shaft 43 (described later). The first edge sensor insertion hole 41e and the second edge sensor insertion hole 41f are respectively the inner spaces of a cylindrical component made of a light-transmitting material. Both ends of the cylindrical component are joined to the housing 41. The first edge sensor insertion hole 41e and the second edge sensor insertion hole 41f are not connected to the internal space of the housing 41. Therefore, the internal space of the housing 41 is kept airtight. An edge sensor light-projecting part T1 is inserted into the first edge sensor insertion hole 41e. An edge sensor light-receiving part T2 is inserted into the second edge sensor insertion hole 41f. The edge sensor light-projecting part T1 projects laser light towards the edge sensor light-receiving part T2. The edge sensor light-receiving part T2 receives the laser light projected by the edge sensor light-projecting part T1. The edge sensor light-receiving part T2 detects the edge position of the electrode material 6 based on the laser light-receiving position. It should be noted that since the square tube component is translucent, it does not obstruct the light reception of the edge sensor light-receiving part T2. The edge sensor light-projecting part T1 and the edge sensor light-receiving part T2 are not components of the conveying device 40, but rather components of the negative electrode tab forming machine 10, the positive electrode tab forming machine 20, and the winding machine 30. Specifically, the edge sensor light-projecting part T1 and the edge sensor light-receiving part T2 are disposed in the respective receiving parts of the negative electrode tab forming machine 10, the positive electrode tab forming machine 20, and the winding machine 30. The edge sensor light-projecting part T1 and the edge sensor light-receiving part T2 are configured such that when the conveying device 40 is disposed in the receiving part, they enter the first and second edge sensor insertion holes 41e and 41f, and when the conveying device 40 is removed from the receiving part, they retract from the first and second edge sensor insertion holes 41e and 41f.

[0089] like Figure 4 and Figure 5 As shown, the housing 41 has a first recess 41g and a second recess 41h. The first recess 41g is a bottomed recess formed on the first side surface F3 of the housing 41. A through hole is formed on the bottom surface of the first recess 41g for inserting one end of the support shaft 43. A first power connector 44a is housed inside the first recess 41g. The second recess 41h is a bottomed recess formed on the second side surface F4 of the housing 41. A through hole is formed on the bottom surface of the second recess 41h for inserting the other end of the support shaft 43. A second power connector 44b is housed inside the second recess 41h.

[0090] The spool 42 is a component used for winding the electrode material 6. Figure 2 and Figure 3 The diagram shows the state in which electrode material 6 is wound on spool 42. Figure 4 and Figure 5The diagram shows the state where the electrode material 6 is not wound on the spool 42. Figure 6 This is a side view showing the structure of the spool 42. The spool 42 has a spool body 42a and a guide belt 42b. The spool body 42a is formed in a cylindrical shape. The guide belt 42b is a thread used to connect the skeleton body 42a and the electrode material 6. In this embodiment, the guide belt 42b is formed in a sheet shape. The base end of the guide belt 42b is fixed to the side peripheral surface 42c of the spool body 42a. The electrode material 6 is connected to the front end of the guide belt 42b via an adhesive member 42d. The electrode material 6 can be wound around the guide belt 42b on the side peripheral surface 42c of the spool body 42a.

[0091] like Figure 4 and Figure 5 As shown, the support shaft 43 is inserted through the center of the drum 42. The support shaft 43 supports the drum 42. The support shaft 43 is fixed to the drum 42 and rotates together with the drum 42. One end of the support shaft 43 passes through the bottom surface of the first recess 41g and protrudes into the inside of the first recess 41g. The other end of the support shaft 43 passes through the bottom surface of the second recess 41h and protrudes into the inside of the second recess 41h. A pair of bearing portions 43a, 43a are installed on the support shaft 43. The pair of bearing portions 43a, 43a are arranged on both sides of the drum 42. The pair of bearing portions 43a, 43a support the support shaft 43 so that it can rotate freely. Each bearing portion 43a is arranged on an LM (Linear Motion) guide 43b. Each LM guide 43b is arranged on a support platform 43c. Each support platform 43c is arranged on a base plate 41b. Figure 4 and Figure 5 As shown, the first power connector 44a is fixed to one end of the support shaft 43, and the second power connector 44b is fixed to the other end of the support shaft 43. The first power connector 44a is housed inside the first recess 41g. Preferably, the first power connector 44a does not protrude outward from the first recess 41g. Thus, when the conveying device 40 is being transported, the first power connector 44a can be prevented from contacting surrounding objects. The second power connector 44b is housed inside the second recess 41h. Preferably, the second power connector 44b does not protrude outward from the second recess 41h. Thus, when the conveying device 40 is being transported, the second power connector 44b can be prevented from contacting surrounding objects.

[0092] Here, as Figure 4 and Figure 5 As shown, the first power connector 44a is connected to the drive connector 100a. The drive connector 100a is fixed to the front end of the drive shaft 100b. If the drive shaft 100b is driven to rotate by a servo motor (not shown), the support shaft 43 connected to the drive connector 100a and the first power connector 44a rotates. Simultaneously, the spool 42 rotates in the desired direction, thereby winding the electrode material 6 onto the spool 42 or pulling the electrode material 6 out of the spool 42.

[0093] The drive connector 100a and drive shaft 100b are not components of the conveying device 40, but rather components of the negative electrode tab forming machine 10, the positive electrode tab forming machine 20, and the winding machine 30, respectively. Specifically, the drive connector 100a and drive shaft 100b are located in the respective storage sections of the negative electrode tab forming machine 10, the positive electrode tab forming machine 20, and the winding machine 30.

[0094] In this embodiment, a plurality of teeth formed at the front end of the first power connector 44a engage with a plurality of teeth formed at the front end of the drive connector 100a, thereby connecting the first power connector 44a and the drive connector 100a. However, the connection structure of the first power connector 44a and the drive connector 100a is not limited to this.

[0095] It should be noted that, in Figure 4 and Figure 5 In this configuration, the first power connector 44a is connected to the drive connector 100a, but depending on the orientation of the conveying device 40, either the first power connector 44a is connected to the drive connector 100a, or the second power connector 44b is connected to the drive connector 100a. Thus, by providing power connectors at both ends of the support shaft 43, the support shaft 43 can be rotated regardless of the orientation of the conveying device 40.

[0096] The first sealing part 45a seals the gap between the cover 41a of the housing 41 and the support shaft 43. The second sealing part 45b seals the gap between the cover 41a of the housing 41 and the support shaft 43. This suppresses changes in the internal environment (e.g., humidity) of the housing 41, thus preventing the deterioration of the electrode material 6. Known mechanical seals can be used as the first and second sealing parts 45a and 45b.

[0097] Braking device 46 brakes the rotation of drum 42. Braking device 46 can be switched between a braking state that brakes the rotation of drum 42 and a releasing state that does not brake the rotation of drum 42. When the electrode material 6 is pulled out from drum 42 or wound onto drum 42, braking device 46 is switched to the releasing state to not impede the movement of the electrode material 6. When the conveying device 40 is in use, braking device 46 is switched to the braking state to prevent the electrode material 6 wound on drum 42 from loosening and tangling. Switching of braking device 46 is performed manually by the operator.

[0098] like Figure 4 and Figure 5As shown, the braking device 46 includes a brake block 46a, a brake operating part 46b, and a first linkage mechanism 46c. The brake block 46a is disposed inside the housing 41, opposite to the side of the drum 42. The brake operating part 46b is disposed outside the housing 41 and can rotate about a predetermined axis 46d. The first linkage mechanism 46c connects the brake block 46a and the brake operating part 46b. The first linkage mechanism 46c causes the brake block 46a to separate from or contact the drum 42 according to the rotation of the brake operating part 46b. Specifically, if the operator performs the rotation operation while standing vertically with the brake operating part 46b on, the first linkage mechanism 46c operates by bringing the brake block 46a into contact with the drum 42. Figure 4 On the other hand, if the operator performs a rotation operation to make the brake operating part 46b lie horizontally, the first linkage mechanism 46c actuates to make the brake block 46a disengage from the drum 42. Figure 5 ).

[0099] In this way, by rotating the brake operating part 46b, the brake device 46 can be easily switched between the braking state and the release state.

[0100] It should be noted that in this embodiment, brake blocks 46a are provided on both sides of the drum 42, but brake blocks 46a may also be provided on only one side of the drum 42.

[0101] like Figure 2 and Figure 3 As shown, the cover device 47 includes a cover 47a and a second linkage mechanism 47b. The cover 47a is disposed inside the housing 41. For example, a plate-shaped component can be used as the cover 47a. The cover 47a opens and closes the sensing opening 41d. The second linkage mechanism 47b connects the first linkage mechanism 46c of the braking device 46 to the cover 47a. The second linkage mechanism 47b moves the cover 47a according to the rotation of the braking operation part 46b of the braking device 46, thereby opening and closing the sensing opening 41d.

[0102] Here, Figure 7 and Figure 8 This is a schematic diagram illustrating the operation of the cover 47a. Figure 7 and Figure 8 The diagram shows the state of the cover 47a viewed from the inside of the housing 41. An opening 47c is formed in the cover 47a.

[0103] When the operator performs the rotation operation while standing vertically with the brake operating part 46b in place, the second linkage mechanism 47b moves downward via the first linkage mechanism 46c through the cover plate 47a. Figure 7As a result, the opening 47c of the cover 47a is deviated from the sensing opening 41d, and the sensing opening 41d is closed by the cover 47a. Therefore, when the conveying device 40 is being transported, changes in the internal environment (e.g., humidity) of the housing 41 can be suppressed, thereby suppressing the deterioration of the electrode material 6.

[0104] On the other hand, when the operator performs a rotation operation to make the brake operating part 46b lie horizontally, the second linkage mechanism 47b is activated via the first linkage mechanism 46c to move the cover plate 47a upward. Figure 8 Therefore, the opening 47c of the baffle 47a coincides with the sensing opening 41d, and the sensing opening 41d is opened. Thus, when the electrode material 6 is pulled out from the spool 42 or when the electrode material 6 is wound on the spool 42, the outer diameter of the electrode material 6 can be detected by the outer diameter detection sensor S.

[0105] In this way, the sensing opening 41d can be automatically opened and closed in conjunction with the switching of the braking device 46, thus eliminating the need for complicated operations of the cover 47a.

[0106] The traveling device 48 supports the housing 41 for movement. The traveling device 48 is positioned below the housing 41. The traveling device 48 has wheels.

[0107] The clamping device 49 is mounted on the housing 41. In this embodiment, the clamping device 49 is disposed outside the housing 41 and mounted on the front surface F1 of the housing 41. The clamping device 49 holds the front end of the guide tape 42b or the front end of the electrode material 6 that protrudes from the insertion opening 41c out of the housing 41. Therefore, when pulling the electrode material 6 out of the spool 42 or winding the electrode material 6 on the spool 42, the operator does not need to remove the guide tape 42b or the front end of the electrode material 6 from the housing 41. Thus, the conveying device 40 can be quickly installed in the receiving parts of the negative electrode tab forming machine 10, the positive electrode tab forming machine 20, and the winding machine 30.

[0108] like Figure 2 and Figure 3 As shown, the clamping device 49 is covered by a protective cover 50. The protective cover 50 is a box made of metal, plastic, or the like. The protective cover 50 is installed on the box 41 in a way that allows it to be opened and closed. It is opened when the electrode material 6 is pulled out from the spool 42 or when the electrode material 6 is wound on the spool 42. The protective cover 50 is closed when the conveying device 40 is being transported. Therefore, when the conveying device 40 is being transported, it is possible to prevent the clamping device 49 from hitting surrounding objects.

[0109] Here, Figures 9 to 12 This is a schematic diagram illustrating the structure and operation of the clamping device 49. Figure 9 and Figure 11 This is a side view of the clamping device 49. Figure 10 and Figure 12 This is a top view of the clamping device 49. Figure 9 and Figure 10 In the middle, the state in which the electrode material 6 is held by the clamping device 49 is in the middle. Figure 11 and Figure 12 In the middle, the electrode material 6 is not held by the clamping device 49. Figures 9 to 12 The protective cover 50 is not shown in the diagram.

[0110] The clamping device 49 includes a clamping operation part 49a, a linkage mechanism 49b, a first support part 49c, a second support part 49d, an LM guide 49e, a first gripping part 49f, a second gripping part 49g, and a guide 49h. A pair of linkage mechanisms 49b, the first support part 49c, the second support part 49d, and the LM guide 49e are provided on each side.

[0111] The clamping operating part 49a is rotatable about a predetermined axis 49j. The linkage mechanism 49b connects the first and second support parts 49c and 49d to the predetermined axis 49j, respectively. The first support part 49c supports the first gripping part 49f. The second support part 49d supports the first gripping part 49g. The first gripping part 49f is located below the second gripping part 49g. The linkage mechanism 49b, based on the rotation of the clamping operating part 49a, causes the first and second support parts 49c and 49d to separate or contact along the LM guide 49e, respectively.

[0112] When the operator rotates the clamping operating part 49a in a vertically upright manner, the linkage mechanism 49b moves in such a way that the first and second support parts 49c and 49d approach each other. Figure 9 and Figure 10 Thus, the first and second gripping portions 49f and 49g approach each other and grip the front end of the electrode material 6. When the first and second gripping portions 49f and 49g grip the front end of the electrode material 6, they close the insertion opening 41c. This suppresses changes in the internal environment (e.g., humidity) of the housing 41, thereby preventing the deterioration of the electrode material 6.

[0113] On the other hand, when the operator performs a rotation operation by lying horizontally with the clamping operating part 49a in place, the linkage mechanism 49b operates in a manner where the first and second support parts 49c and 49d are separated. Figure 11 and Figure 12Therefore, the first and second gripping portions 49f and 49g separate from each other, releasing the tip of the electrode material 6. Thus, when the first and second gripping portions 49f and 49g are no longer gripping the tip of the electrode material 6, they release the insertion opening 41c. Therefore, when the electrode material 6 is pulled out from the spool 42 or wound onto the spool 42, the movement of the electrode material 6 is not obstructed.

[0114] The guide member 49h is installed on the first gripping part 49f located below the second gripping part 49g. The guide member 49h supports the front end of the electrode material 6 from below. As a result, the sagging of the front end of the electrode material 6 protruding from the first and second gripping parts 49f and 49g can be suppressed, thereby improving the processability of the front end of the electrode material 6.

[0115] It should be noted that, in Figures 9 to 12 The description explains the case where the front end of the electrode material 6 is held by the clamping device 49, but the clamping device 49 can also hold the front end of the guide belt 42b.

[0116] (Structure and operation of pull-in part 14d)

[0117] The pull-in portion 14d of the negative electrode tab forming machine 10, the pull-in portion 15d of the negative electrode tab forming machine 10, the pull-in portion 24d of the positive electrode tab forming machine 20, and the pull-in portion 25d of the positive electrode tab forming machine 20 are examples of the "pull-in portion" of the present invention.

[0118] Pull-in sections 14d, 15d, 24d, and 25d each have the same structure and operate in the same manner. Therefore, the structure and operation of pull-in section 14d will be described below with reference to the accompanying drawings, as a representative example of a "pull-in section". Figures 13-26 This is a schematic diagram used to illustrate the structure and operation of the pull-in section 14d.

[0119] like Figure 13 As shown, the pull-in part 14d includes a fixed guide roller a, a first movable guide roller b1, a second movable guide roller b2, a first pull-out roller c1, a second pull-out roller c2, a fixed gripping part d, a first movable gripping part e1, a second movable gripping part e2, a cutter f, a first position sensor g1, a second position sensor g2, and an adhesive pad h.

[0120] A fixed guide roller a is disposed upstream of the cutter f. The position of the fixed guide roller a is fixed. A first movable guide roller b1 is disposed downstream of the cutter f. The first movable guide roller b1 can move between a guiding position for guiding the negative electrode material 1 and a retracted position that does not obstruct the conveying of the first movable gripping part e1. A second movable guide roller b2 is disposed downstream of the cutter f. The second movable guide roller b2 can move between a guiding position for guiding the negative electrode material 1 and a retracted position that does not obstruct the conveying of the second movable gripping part e2. In this embodiment, upstream and downstream are terms based on the flow direction of the negative electrode material 1.

[0121] The first pull-out roller c1 is positioned opposite the clamping device 49 of the conveying device 40 disposed in the first storage section 14b. The first pull-out roller c1 is composed of a pair of drive rollers that can be separated from or contact each other. The pair of drive rollers constituting the first pull-out roller c1 can be rotated and driven by a servo motor (not shown). The second pull-out roller c2 is positioned opposite the clamping device 49 of the conveying device 40 disposed in the second storage section 14c. The second pull-out roller c2 is composed of a pair of drive rollers that can be separated from or contact each other. The pair of drive rollers constituting the second pull-out roller c2 can be rotated and driven by a servo motor (not shown). The fixed gripping part d is disposed between the fixed guide roller a and the cutter f. The fixed gripping part d is composed of a pair of pads that can be separated from or contact each other. The first movable gripping part e1 is configured to be movable between the first pull-out roller c1 and the cutter f. The first movable gripping part e1 is composed of a pair of pads that can be separated from or contact each other. The second movable gripping part e2 is configured to move between the second pull-out roller c2 and the cutter f. The second movable gripping part e2 consists of a pair of pads that can separate from or contact each other.

[0122] The cutter f is positioned downstream of the fixed gripping part d. The cutter f is configured to retract to a position that does not obstruct the movement of the adhesive pad h. The first position sensor g1 is positioned upstream of the first pull-out roller c1. The first position sensor g1 detects the position of the rear end of the negative electrode material 1 or the front end of the guide belt 42b. The second position sensor g2 is positioned upstream of the second pull-out roller c2. The second position sensor g2 detects the position of the rear end of the negative electrode material 1 or the front end of the guide belt 42b. The adhesive pad h is positioned at the same location as the cutter f. The adhesive pad h is configured to adhere an adhesive component (not shown) to the beginning end 1P of the negative electrode material 1 and the front end 1R of the guide belt 42b, as described later.

[0123] First, such as Figure 13As shown, the conveying device 40 for winding the negative electrode material 1 is disposed in the first storage section 14b, and the empty conveying device 40 for unwound negative electrode material 1 is disposed in the second storage section 14c. The negative electrode material 1 is pulled into the conveying device 40 disposed in the first storage section 14b via the pull-in section 14d. Specifically, after the negative electrode material 1 is sequentially guided by the fixed guide roller a and the first movable guide roller b1, it is pulled into the conveying device 40 disposed in the first storage section 14b between the first pull-out roller c1. The clamping device 49 of the conveying device 40 disposed in the first storage section 14b does not hold the negative electrode material 1. The first stop 14e fixes the conveying device 40 disposed in the first storage section 14b. The clamping device 49 of the conveying device 40 disposed in the second storage section 14c holds the guide belt 42b. The front end 1R of the guide belt 42b is inserted between the second pull-out roller c2.

[0124] Next, as Figure 14 As shown, the first stop 14f is fixedly disposed in the empty conveying device 40 of the second storage section 14c.

[0125] Next, as Figure 15 As shown, the second pull-out roller c2 holds the front end 1R of the guide belt 42b.

[0126] Next, although not shown in the figure, when the desired amount of negative electrode material 1 is filled into the conveying device 40 disposed in the first storage section 14b, the drive shaft 100b (see reference) Figure 4 The rotation drive of the negative electrode material 1 stops, thus interrupting the winding.

[0127] Next, as Figure 16 As shown, the fixed gripping part d grips the negative electrode material 1, and the first movable gripping part e1 grips the negative electrode material 1. At this time, the first movable gripping part e1 is located on the opposite side of the fixed gripping part d with reference to the cutter f. Furthermore, as... Figure 16 As shown, the first pull-out roller c1 holds the negative electrode material 1, and the clamping device 49 of the conveying device 40 disposed in the second storage part 14c releases the guide belt 42b.

[0128] Next, as Figure 17 As shown, the cutter f cuts the negative electrode material 1. Thus, the negative electrode material 1 is severed between the starting end 1P and the ending end 1Q. Furthermore, as... Figure 17As shown, the second pull-out roller c2 rotates while holding the front end 1R of the guide belt 42b, thereby pulling out the front end 1R of the guide belt 42b. This eliminates the need for manual pulling of the guide belt 42b, allowing for easy handling (specifically, recycling) of the electrode material. The front end 1R of the guide belt 42b is inserted between the second movable gripping parts e2. At this time, the second position sensor g2 detects the position of the front end of the guide belt 42b, and the rotation of the second pull-out roller c2 stops when the front end of the guide belt 42b protrudes a predetermined amount from the second movable gripping part e2.

[0129] Next, as Figure 18 As shown, the first movable gripping part e1, while gripping the end portion 1Q of the negative electrode material 1, begins to convey it towards the first receiving part 14b, and the first movable guide roller b1 begins to move from the guiding position of guiding the negative electrode material 1 to a retracted position that does not obstruct the conveying of the first movable gripping part e1. At this time, the spool 42 rotates by the amount of movement of the first movable gripping part e1, thereby winding the negative electrode material 1 onto the spool 42. Furthermore, as... Figure 18 As shown, the second movable gripping part e2 grips the front end 1R of the guide belt 42b, and the cutter f retracts to a position that does not obstruct the movement of the adhesive pad h.

[0130] Next, as Figure 19 As shown, the first movable gripping part e1 continues to convey the terminal part 1Q of the negative electrode material 1, while the first movable guide roller b1 completes its movement to the retraction position. Additionally, as... Figure 19 As shown, with the second movable gripping part e2 gripping the front end 1R of the guide belt 42b, it begins to transport the front end 1R of the guide belt 42b toward the starting end 1P of the negative electrode material 1 cut by the cutter f. At this time, the drum 42 rotates by the amount of movement of the second movable gripping part e2, thereby feeding out the guide belt 42b.

[0131] Next, as Figure 20 As shown, the first movable gripping part e1 continues to convey the terminal part 1Q of the negative electrode material 1, and the second movable gripping part e2 continues to convey the front end part 1R of the guide belt 42b. At this time, the second movable guide roller b2 is in a retracted position that does not obstruct the conveying of the second movable gripping part e2.

[0132] Next, as Figure 21 As shown, the first movable gripping part e1 continues to transport the terminal part 1Q of the negative electrode material 1, and the second movable gripping part e2 completes the transport of the front end part 1R of the guide belt 42b. Additionally, as... Figure 21 As shown, the second movable guide roller b2 begins to move toward the guide position of the guide belt 42b and the negative electrode material 1.

[0133] Next, as Figure 22As shown, the first movable gripping part e1 completes the conveying of the terminal part 1Q of the negative electrode material 1, and the second movable guide roller b2 completes the movement to the guide position.

[0134] Next, as Figure 23 As shown, the adhesive pad h uses an adhesive component to connect the front end 1R of the lead strip 42b to the starting end 1P of the negative electrode material 1. Additionally, as... Figure 23 As shown, the first movable holding part e1 releases the terminal part 1Q of the negative electrode material 1.

[0135] Next, as Figure 24 As shown, the first pull-out roller c1 rotates while holding the end portion 1Q of the negative electrode material 1, thereby pulling in the end portion 1Q of the negative electrode material 1. Thus, the end portion 1Q of the negative electrode material 1 is pulled in front of the first pull-out roller c1. At this time, the drum 42 rotates the first pull-out roller c1 by the amount the end portion 1Q is pulled in, thereby winding the negative electrode material 1 onto the drum 42. Furthermore, the first position sensor g1 detects the position of the rear end of the negative electrode material 1, and when the rear end of the end portion 1Q moves away from the first movable gripping part e1 by a predetermined amount, the rotation drive of the first pull-out roller c1 stops. Then, as... Figure 24 As shown, the clamping device 49 of the conveying device 40 disposed in the first storage section 14b holds the negative electrode material 1.

[0136] Next, as Figure 25 As shown, the fixed gripping part d releases the starting end 1P of the negative electrode material 1, and the second movable gripping part e2 releases the front end 1R of the lead belt 42b. Additionally, as... Figure 25 As shown, the first pull-out roller c1 releases the terminal portion 1Q of the negative electrode material 1, and the second pull-out roller c2 releases the lead belt 42b.

[0137] Next, as Figure 26 As shown, the drive shaft 100b (see reference) is connected to the conveying device 40 disposed in the second storage section 14c. Figure 4 The rotary drive causes the drum 42 to rotate. As a result, the lead tape 42b and the negative electrode material 1 are sequentially wound onto the drum 42.

[0138] (Structure and operation of pull-out part 31d)

[0139] The pull-out section 31d and pull-out section 32d of the winding machine 30 are examples of the "pull-out section" of this disclosure.

[0140] Pull-out sections 31d and 32d have the same structure and operate in the same manner. Therefore, the structure and operation of pull-out section 31d will be described below with reference to the accompanying drawings as a representative example of a "pull-out section". Figures 27-40 This is a schematic diagram used to illustrate the structure and operation of the pull-out part 31d.

[0141] like Figure 27 As shown, the pull-out part 31d includes a fixed guide roller j, a first movable guide roller k1, a second movable guide roller k2, a first pull-out roller m1, a second pull-out roller m2, a fixed gripping part n, a first movable gripping part p1, a second movable gripping part p2, a cutter q, a first position sensor r1, a second position sensor r2, and an adhesive pad s.

[0142] A fixed guide roller j is positioned downstream of the cutter q. The position of the fixed guide roller j is fixed. A first movable guide roller k1 is positioned upstream of the cutter q. The first movable guide roller k1 can move between a guiding position for guiding the negative electrode material 1 and a retracted position that does not obstruct the conveying of the first movable gripping part p1. A second movable guide roller k2 is positioned upstream of the cutter q. The second movable guide roller k2 can move between a guiding position for guiding the negative electrode material 1 and a retracted position that does not obstruct the conveying of the second movable gripping part p2. In this embodiment, upstream and downstream are terms based on the flow direction of the negative electrode material 1.

[0143] The first pull-out roller m1 is positioned opposite the clamping device 49 of the conveying device 40 disposed in the first storage section 31b. The first pull-out roller m1 is composed of a pair of drive rollers that can be separated from or contact each other. The pair of drive rollers constituting the first pull-out roller m1 can be rotated and driven by a servo motor (not shown). The second pull-out roller m2 is positioned opposite the clamping device 49 of the conveying device 40 disposed in the second storage section 31c. The second pull-out roller m2 is composed of a pair of drive rollers that can be separated from or contact each other. The pair of drive rollers constituting the second pull-out roller m2 can be rotated and driven by a servo motor (not shown). The fixed gripping part n is disposed between the fixed guide roller j and the cutter q. The fixed gripping part n is composed of a pair of pads that can be separated from or contact each other. The first movable gripping part p1 is configured to be movable between the first pull-out roller m1 and the cutter q. The first movable gripping part p1 is composed of a pair of pads that can be separated from or contact each other. The second movable gripping part p2 is configured to move between the second pull-out roller m2 and the cutter q. The second movable gripping part p2 is composed of a pair of pads that can separate from or contact each other.

[0144] The cutter q is positioned upstream of the fixed gripping part n. The cutter q is configured to retract to a position that does not obstruct the movement of the adhesive pad s. A first position sensor r1 is positioned downstream of the first pull-out roller m1. The first position sensor r1 detects the position of the front or rear end of the negative electrode material 1. A second position sensor r2 is positioned downstream of the second pull-out roller m2. The second position sensor r2 detects the position of the front or rear end of the negative electrode material 1. The adhesive pad s is positioned at the same location as the cutter q. The adhesive pad s is configured to adhere an adhesive component (not shown) to the beginning end 1S and the front end 1U of the negative electrode material 1, as described later.

[0145] First, such as Figure 27 As shown, a conveying device 40 that pulls out the negative electrode material 1 is disposed in the first receiving section 31b, and a conveying device 40 filled with the negative electrode material 1 is disposed in the second receiving section 31c. The negative electrode material 1 is pulled out from the conveying device 40 disposed in the first receiving section 31b via the pulling section 31d. Specifically, the negative electrode material 1 is pulled out from the conveying device 40 disposed in the first receiving section 31b, and after passing between the first pulling rollers m1, it is guided in sequence by the first movable guide roller k1 and the fixed guide roller j. The clamping device 49 of the conveying device 40 disposed in the first receiving section 31b does not hold the negative electrode material 1. The first stop member 14g fixes the conveying device 40 disposed in the first receiving section 31b. The clamping device 49 of the conveying device 40 disposed in the second receiving section 31c holds the negative electrode material 1. The front end 1U of the negative electrode material 1 is inserted between the second pulling rollers m2. It should be noted that the negative electrode material 1 pulled out from the conveying device 40 disposed in the first storage section 31b is an example of the "first electrode material" of this disclosure, and the negative electrode material 1 filled in the conveying device 40 disposed in the second storage section 31c is an example of the "second electrode material" of this disclosure.

[0146] Next, as Figure 28 As shown, the first stop 14h is fixed to the conveying device 40 of the second storage section 31c.

[0147] Next, as Figure 29 As shown, the second pull-out roller m2 holds the front end 1U of the negative electrode material 1.

[0148] Next, although not shown in the figure, when the amount of negative electrode material 1 remaining in the conveying device 40 disposed in the first storage section 31b is below a predetermined amount, the drive shaft 100b (see reference) Figure 4 The rotation drive of the electrode stops, thus interrupting the pulling out of the negative electrode material 1.

[0149] Next, as Figure 30 As shown, the fixed gripping part n grips the negative electrode material 1, and the first movable gripping part p1 grips the negative electrode material 1. At this time, the first movable gripping part p1 is located on the opposite side of the fixed gripping part n with the cutter q as a reference. In addition, as Figure 30 As shown, the first pull-out roller m1 holds the negative electrode material 1, and the clamping device 49 of the conveying device 40 disposed in the second storage section 31c releases the negative electrode material 1.

[0150] Next, as Figure 31 As shown, the cutter q cuts the negative electrode material 1. Thus, the negative electrode material 1 is severed between the starting end 1S and the ending end 1T. Furthermore, as... Figure 31As shown, the second pull-out roller m2 rotates while holding the front end 1U of the negative electrode material 1, thereby pulling out the front end 1U of the negative electrode material 1. Therefore, the operator does not need to manually pull out the front end 1U of the negative electrode material 1, thus simplifying the handling (specifically, replacement) of the electrode material. The front end 1U of the negative electrode material 1 is inserted between the second movable gripping parts p2. At this time, the second position sensor r2 detects the position of the front end of the negative electrode material 1, and when the front end of the negative electrode material 1 protrudes a predetermined amount from the second movable gripping part p2, the rotation of the second pull-out roller m2 stops.

[0151] Next, as Figure 32 As shown, the first movable gripping part p1, while gripping the end part 1T of the negative electrode material 1, begins to move towards the first receiving part 31b, and the first movable guide roller k1 begins to move from the guiding position of guiding the negative electrode material 1 towards a retracted position that does not obstruct the movement of the first movable gripping part p1. At this time, the spool 42 rotates by the amount of movement of the first movable gripping part p1, thereby winding the negative electrode material 1 onto the spool 42. Furthermore, as... Figure 32 As shown, the second movable gripping part p2 grips the front end 1U of the negative electrode material 1, and the cutter q retracts to a position that does not obstruct the operation of the adhesive pad s.

[0152] Next, as Figure 33 As shown, the first movable gripping part p1 continues to convey the terminal part 1T of the negative electrode material 1, while the first movable guide roller k1 completes its movement to the retraction position. Additionally, as... Figure 33 As shown, with the second movable gripping part p2 holding the front end 1U of the negative electrode material 1, it begins to transport the front end 1U of the negative electrode material 1 toward the starting end 1S of the negative electrode material 1 cut by the cutter q. At this time, the drum 42 rotates by the amount of movement of the second movable gripping part p2, thereby feeding out the negative electrode material 1.

[0153] Next, as Figure 34 As shown, the first movable gripping part p1 continues to transport the terminal part 1T of the negative electrode material 1, and the second movable gripping part p2 continues to transport the front end part 1U of the negative electrode material 1. At this time, the second movable guide roller k2 is in a retracted position that does not obstruct the transport of the second movable gripping part p2.

[0154] Next, as Figure 35 As shown, the first movable gripping part p1 continues to transport the terminal part 1T of the negative electrode material 1, while the second movable gripping part p2 completes the transport of the front end part 1U of the negative electrode material 1. Additionally, as... Figure 35 As shown, the second movable guide roller k2 begins to move toward the guide position of the negative electrode material 1 and the guide position of the negative electrode material 1.

[0155] Next, as Figure 36As shown, the first movable gripping part p1 completes the conveying of the terminal part 1T of the negative electrode material 1, and the second movable guide roller k2 completes the movement to the guide position.

[0156] Next, as Figure 37 As shown, the adhesive pad s uses an adhesive component to connect the front end 1U of the negative electrode material 1 to the beginning end 1S of the negative electrode material 1. Additionally, as... Figure 37 As shown, the first movable holding part p1 releases the terminal part 1T of the negative electrode material 1.

[0157] Next, as Figure 38 As shown, the first pull-out roller m1 is driven to rotate while holding the end portion 1T of the negative electrode material 1, thereby pulling in the end portion 1T of the negative electrode material 1. Thus, the end portion 1T of the negative electrode material 1 is pulled in front of the first pull-out roller m1. At this time, the drum 42 rotates the first pull-out roller m1 by the amount of pull-in of the end portion 1T, thereby winding the negative electrode material 1 onto the drum 42. Furthermore, the first position sensor r1 detects the position of the rear end of the negative electrode material 1, and when the rear end of the negative electrode material 1 moves away from the first movable holding part p1 by a predetermined amount, the rotation drive of the first pull-out roller m1 stops. Then, as... Figure 38 As shown, the clamping device 49 of the conveying device 40 disposed in the first storage section 31b holds the negative electrode material 1.

[0158] Next, as Figure 39 As shown, the fixed gripping part n releases the initial end portion 1S of the negative electrode material 1, and the second movable gripping part p2 releases the front end portion 1U of the negative electrode material 1. Additionally, as... Figure 39 As shown, the first pull-out roller m1 releases the terminal part 1T of the negative electrode material 1, and the second pull-out roller m2 releases the negative electrode material 1.

[0159] Next, as Figure 40 As shown, the drive shaft 100b connected to the conveying device 40 disposed in the second storage section 31c (see reference) Figure 4 The rotary drive causes the drum 42 to rotate. As a result, the negative electrode material 1 wound on the drum 42 is pulled out.

[0160] (Manufacturing method of electrode material 6 and electrode body 5)

[0161] As explained above, in the electrode body manufacturing system 1, a method for manufacturing electrode material 6 (at least one of negative electrode material 1 and positive electrode material 2) and a method for manufacturing electrode body 5 are implemented.

[0162] [Manufacturing method of electrode material 6]

[0163] First, in the negative electrode tab forming machine 10, a sheet-like negative electrode material 1 is formed by forming tabs on a sheet-like wide negative electrode raw material 1a. Next, the negative electrode material 1 is wound onto a spool 42 of a conveying device 40 disposed within the negative electrode tab forming machine 10. Then, the conveying device 40 is removed from the negative electrode tab forming machine 10. Through the above process, the negative electrode material 1, as one of the electrode materials 6, is manufactured.

[0164] Furthermore, in the positive electrode tab forming machine 20, a sheet-like positive electrode material 2 is formed by forming tabs on a sheet-like wide positive electrode raw material 2a. Next, the positive electrode material 2 is wound onto a spool 42 of a conveying device 40 disposed within the positive electrode tab forming machine 20. Then, the conveying device 40 is removed from the positive electrode tab forming machine 20. Through the above process, the positive electrode material 2, as one of the electrode materials 6, is manufactured.

[0165] [Manufacturing method of electrode 5]

[0166] First, the conveying device 40, which has a spool 42 wound with negative electrode material 1, is conveyed. Next, the conveying device 40 is installed on the negative electrode material supply device 31 of the winding machine 30. Then, the negative electrode material 1 wound on the spool 42 is pulled out from the conveying device 40.

[0167] In addition, the conveying device 40, which has a spool 42 wound with the positive electrode material 2, is used to convey the material. Then, the conveying device 40 is installed on the positive electrode material supply device 32 of the winding machine 30. Next, the positive electrode material 2 wound on the spool 42 is pulled out from the conveying device 40.

[0168] Then, an electrode body 5 is formed by overlapping and winding the negative electrode material 1, the positive electrode material 2, the sheet-like outer diaphragm 3, and the sheet-like inner diaphragm 4.

[0169] (Modifications of the implementation method)

[0170] The above describes one embodiment of the present disclosure, but the present disclosure is not limited to the above embodiment and various modifications can be made without departing from the spirit of the disclosure.

[0171] (A) In the above embodiment, the first and second power connectors 44a and 44b are fixed to the support shaft 43, but it is also possible that only one of the first and second power connectors 44a and 44b is fixed to the support shaft 43. In this case, only one end of the support shaft 43 protrudes outward from the housing 41.

[0172] (B) The box 41 may also not have the first and second recesses 41g and 41h.

[0173] (C) The conveying device 40 may also not have at least one of the braking device 46, the shielding device 47, the traveling device 48 and the clamping device 49.

[0174] (D) The traveling device 48 can also be an AGV (Automatic Guided Vehicle) capable of automatically moving while supporting the housing 41. As an AGV, it can use image recognition, electromagnetic induction, magnetic induction, laser guidance, or non-guided driving methods. When the traveling device 48 is an AGV, the braking operation part 46b of the braking device 46 and the clamping operation part 49a of the clamping device 49 can be manually operated by the operator, or they can be automatically operated by the mechanisms provided in the negative electrode material recovery device 13, the positive electrode material recovery device 23, the negative electrode material supply device 31, and the positive electrode material supply device 32.

[0175] (E) In the above embodiment, the tab forming device 12 of the negative electrode tab forming machine 10 has a slitting machine 12d, but the slitting machine 12d may also be arranged in the front section of the negative electrode tab forming machine 10. In this case, the conveying device 40 may also be used in the conveying of the negative electrode half-width raw material formed by the slitting machine 12d.

[0176] (F) In the above embodiment, the tab forming device 22 of the positive electrode tab forming machine 20 has a slitting machine 22d, but the slitting machine 22d may also be arranged in the front section of the positive electrode tab forming machine 20. In this case, the conveying device 40 may also be used in conveying the positive electrode half-width raw material formed by the slitting machine 22d.

[0177] (Note 1-1)

[0178] The winding machine disclosed herein comprises: an electrode material supply device having a second receiving portion for receiving sheet-like second electrode material and a pulling portion for pulling the second electrode material out of the second receiving portion; a diaphragm supply device for supplying sheet-like diaphragms; and a winding device for winding the second electrode material and the diaphragm, wherein the pulling portion includes a pulling roller that pulls the second electrode material out of the second receiving portion while holding the front end portion of the second electrode material.

[0179] (Notes 1-2)

[0180] As described in Appendix 1-1, the winding machine has a first receiving portion for receiving a sheet-shaped first electrode material, and after the pulling portion pulls the first electrode material out from the first receiving portion, it pulls the second electrode material out from the second receiving portion. After the winding device winds the first electrode material and the diaphragm, it winds the second electrode material and the diaphragm.

[0181] (Notes 1-3)

[0182] The winding machine as described in Appendix 1-1 or 1-2, wherein the pull-out section includes: a cutter for cutting off the first electrode material; and a movable holding section for conveying the front end of the second electrode material pulled out by the roller to the beginning end of the first electrode material cut by the cutter while holding the front end of the second electrode material pulled out by the roller.

[0183] (Notes 1-4)

[0184] As described in Appendix 1-3, the winding machine includes a fixed guide roller disposed on the downstream side of the cutter and a movable guide roller disposed on the upstream side of the cutter, the movable guide roller being movable between a guiding position for guiding the second electrode material and a retracting position that does not obstruct the conveying of the movable gripping part.

[0185] (Notes 1-5)

[0186] The winding machine as described in any one of Appendix 1-1 to 1-4, wherein the pull-out section includes a position sensor for detecting the position of the front end of the second electrode material.

[0187] (Notes 1-6)

[0188] The electrode material connection method disclosed herein includes the following steps: cutting a sheet-like first electrode material; pulling out a sheet-like second electrode material while holding the front end; conveying the second electrode material to the beginning end of the cut first electrode material while holding the front end; and connecting the beginning end of the first electrode material to the front end of the second electrode material.

[0189] (Note 2-1)

[0190] The tab forming machine disclosed herein includes: a tab forming apparatus that forms a sheet-like electrode material by forming tabs on a sheet-like raw material; and an electrode material recycling apparatus having a second receiving section for receiving the electrode material and a pulling section for pulling the electrode material into the second receiving section, the pulling section including a pull-out roller that pulls out while holding the front end of a guide belt mounted on a spool disposed in the second receiving section.

[0191] (Note 2-2)

[0192] As described in Appendix 2-1, the electrode forming machine has a first receiving section for receiving the electrode material, and the pulling section pulls the electrode material into a second receiving section after pulling the electrode material into the first receiving section.

[0193] (Notes 2-3)

[0194] According to Appendix 2-1 or 2-2, the tab forming machine includes: a cutter for cutting the electrode material; and a movable gripping part for conveying the electrode material to the beginning end of the electrode material cut by the cutter while holding the front end of the guide belt pulled out by the roller.

[0195] (Notes 2-4)

[0196] According to the tab forming machine described in Appendix 2-3, the pull-in section includes a fixed guide roller disposed on the upstream side of the cutter and a movable guide roller disposed on the downstream side of the cutter. The movable guide roller is movable between a guiding position for guiding the electrode material and a retracting position that does not obstruct the conveying of the movable gripping section.

[0197] (Notes 2-5)

[0198] According to any one of Appendices 2-1 to 2-4, the tab forming machine, wherein the pull-in section includes a position sensor for detecting the position of the front end of the guide strip.

[0199] (Notes 2-6)

[0200] The electrode material recycling method disclosed herein includes the following steps: cutting sheet-like electrode material; conveying the cut electrode material to a first receiving section while holding the terminal portion; and pulling the electrode material into the receiving section while holding the terminal portion.

[0201] (Notes 2-7)

[0202] According to the electrode material recycling method described in Appendix 2-6, the electrode material recycling method further includes the following step: using a clamping device of a conveying device disposed in the first receiving part and having a roll of the electrode material wound inside to hold the end part of the electrode material.

[0203] (Notes 2-8)

[0204] The electrode material connection method disclosed herein includes the following steps: cutting a sheet-like electrode material; pulling out a guide belt while holding the front end of the guide belt, the guide belt being mounted on a spool disposed in a storage section; conveying the front end of the guide belt to the beginning end of the cut electrode material while holding the front end of the guide belt; and connecting the front end of the guide belt to the beginning end of the electrode material.

[0205] Explanation of reference numerals in the attached figures

[0206] 100: Electrode manufacturing system; 10: Negative electrode tab forming machine; 20: Positive electrode tab forming machine; 30: Winding machine; 40: Conveying device; 41: Housing; 42: Drum; 43: Support shaft; 44a: First power connector; 44b: Second power connector; 45a: First sealing part; 45b: Second sealing part; 46: Braking device; 47: Sheathing device; 48: Traveling device; 49: Clamping device.

Claims

1. A winding machine, comprising: An electrode material supply device has a second receiving portion for receiving sheet-shaped second electrode material and a pulling portion for pulling the second electrode material out of the second receiving portion; A diaphragm supply device that supplies sheet-like diaphragms; and A winding device for winding the second electrode material and the diaphragm. The pull-out section includes a pull-out roller that pulls out the second receiving section while holding the front end of the second electrode material.

2. A method for connecting electrode materials, comprising the following steps: Cut the sheet-like first electrode material; Pull out while holding the front end of the sheet-like second electrode material; While holding the front end of the second electrode material, it is transferred to the beginning end of the cut first electrode material; and Connect the front end of the second electrode material to the beginning end of the first electrode material.

3. A tab forming machine, comprising: An electrode forming apparatus that forms sheet-like electrode material by forming electrodes on sheet-like raw materials; and An electrode material recycling device has a second receiving section for receiving the electrode material and a pulling section for pulling the electrode material into the second receiving section. The pull-in section includes a pull-out roller that pulls out the guide belt while holding the front end of the guide belt, which is mounted on a spool disposed in the second storage section.

4. A method for recycling electrode material, comprising the following steps: Cut sheet-like electrode material; While holding the cut end of the electrode material, it is transported to the first storage section; While holding the end portion of the electrode material, pull it into the receiving portion.

5. A method for connecting electrode materials, comprising the following steps: Cut sheet-like electrode material; Pull out while holding the front end of the guide belt, which is mounted on a spool located in the storage section; While holding the front end of the guide band, it is conveyed to the beginning end of the cut electrode material; and Connect the front end of the lead to the beginning end of the electrode material.

6. A method for manufacturing an electrode material and an electrode body, comprising the following steps: In the tab forming machine, tabs are formed on sheet-like raw materials to create sheet-like electrode materials; The electrode material is wound on a drum of a conveying device located within the tab forming machine; The conveying device is removed from the tab forming machine; The conveying device is installed on the winding machine; The electrode material wound on the spool is pulled out from the conveying device; as well as An electrode body is formed by overlapping and winding the electrode material and a sheet-like diaphragm.

7. A method for manufacturing an electrode material, comprising the following steps: In the tab forming machine, tabs are formed on sheet-like raw materials to create sheet-like electrode materials; The electrode material is wound onto a spool in a conveying device configured within the tab forming machine; and The conveying device is removed from the tab forming machine.

8. A method for manufacturing an electrode, comprising the following steps: A conveying device having a roll on which sheet-like electrode material is wound; The conveying device is installed on the winding machine; The electrode material wound on the spool is pulled out from the conveying device; and An electrode body is formed by overlapping and winding the electrode material with a sheet-like diaphragm.

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