Manufacturing apparatus and method for laminated electrode body

Abstract

To provide a device and a method for manufacturing a laminate electrode with an excellent productivity.SOLUTION: A device for manufacturing a laminate electrode body 10 includes: an arrangement device 20 for dividing a sheet-like separator 13 into a plurality of flat surface parts 16A, 16B, 16C, 16D, and 16E and arranging the flat surface parts 16A, 16B, 16C, 16D, and 16E on top of one another; a supply device 30 for supplying electrodes 11 and 12 forming the laminate electrode body 10 so that the electrodes 11 and 12 line up along one flat surface part 16A, 16B, 16C, or 16D; and a cutting device 46 for cutting the flat surface parts 16A, 16B, 16C, and 16D between the electrodes 11 and 12 while the flat surface parts 16A, 16B, 16C, and 16D and the electrodes 11 and 12 lining up along the flat surface parts 16A, 16B, 16C, and 16D are laminated.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an apparatus and method for manufacturing a laminated electrode assembly. [Background technology]

[0002] Patent Document 1 discloses a technology for manufacturing a stacked electrode body for a secondary battery by bending a single separator into a zigzag shape and inserting positive and negative electrodes alternately into the gaps in the separator created by the bending. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-103425 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above method, one electrode is inserted into one gap, so only one laminated electrode body is manufactured in one process, resulting in low productivity.

[0005] The present disclosure was completed in light of the above circumstances, and an object of the present disclosure is to provide a highly productive manufacturing apparatus and manufacturing method for a laminated electrode body. [Means for solving the problem]

[0006] The manufacturing apparatus for a laminated electrode body according to the present disclosure includes: an arrangement device that divides a sheet-like separator into a plurality of planar sections and arranges the plurality of planar sections so as to be stacked; a supply device that supplies electrodes constituting the laminated electrode body so that a plurality of the electrodes are arranged along one of the planar portions; The laminated laminate further includes a cutting device that cuts the planar portions between the electrodes in a state in which the planar portions and the electrodes aligned along the planar portions are stacked.

[0007] The method for producing a laminated electrode body according to the present disclosure includes: A sheet-like separator is divided into a plurality of planar sections, and the planar sections are arranged so as to be stacked, The electrodes constituting the laminated electrode body are supplied so that a plurality of the electrodes are arranged along one of the planar portions; In a state in which the plurality of planar portions and the plurality of electrodes aligned along the planar portions are stacked, the planar portions are cut between the electrodes. [Effects of the Invention]

[0008] According to the present disclosure, since a plurality of electrodes are arranged side by side along one flat surface, it is possible to provide a highly productive manufacturing device and manufacturing method for a laminated electrode body. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a side view showing a state in which one flat portion is disposed on negative electrodes arranged on a stacking table in the manufacturing apparatus of embodiment 1. [Figure 2] Plan view of the state in Figure 1 [Figure 3] FIG. 1 is a side view of a supply device for supplying electrodes so that they are aligned along a flat surface. [Figure 4] A side view showing the state in which a positive electrode is provided on the flat surface from the state in FIG. 1. [Figure 5] Plan view of Figure 4 [Figure 6] A side view showing the state in which two flat sections are arranged from the state in FIG. 4. [Figure 7] A side view showing the state in which a negative electrode is provided on the flat portion from the state in FIG. [Figure 8] Plan view of Figure 7 [Figure 9] 8 is a side view showing a state in which a positive electrode is provided, two flat portions are arranged, and a negative electrode is provided from the state of FIG. [Figure 10] A side view showing how the separator is cut when the separator, negative electrode, and positive electrode are stacked. [Figure 11] 11 is a side view showing a state in which the separator is cut from the state of FIG. 10 and separated into a plurality of laminated electrode bodies. [Figure 12] FIG. 10 is a side view showing a state in which one flat portion is disposed on negative electrodes arranged on a stacking table in the manufacturing apparatus of embodiment 2. [Figure 13] 13 is a side view showing the separator cut from the state shown in FIG. 12 to separate one flat portion. [Figure 14] 14 is a side view showing the state in which a positive electrode is provided on the flat portion from the state of FIG. 13. [Figure 15] 15 is a side view showing the state in which the flat portion is disposed from the state of FIG. 14. [Figure 16] A side view showing the state in which the separator is cut from the state in Figure 15 and one flat portion is separated. [Figure 17] A side view showing how the separator is cut when the separator, negative electrode, and positive electrode are stacked. [Figure 18] 18 is a side view showing a state in which the separator is cut from the state of FIG. 17 and separated into a plurality of laminated electrode bodies. DETAILED DESCRIPTION OF THE INVENTION

[0010] Here, a preferred example of the present disclosure will be described. The arrangement device is a manufacturing device for a laminated electrode body that forms a plurality of the planar portions connected via folded portions by bending the separator in a zigzag shape. The arrangement device is a manufacturing device for a laminated electrode body that forms two of the planar portions connected to one folded portion by pulling a part of the separator hanging down vertically in the horizontal direction. a stretching step of forming two flat portions connected to one folded portion by pulling a part of the separator hanging down vertically in a horizontal direction; and a supplying step of supplying the plurality of electrodes so that they are aligned along the flat surface portion.

[0011] [Embodiment 1] A first embodiment of the present disclosure will be described with reference to FIGS. 1 to 11. Note that the present invention is not limited to these examples, but is defined by the claims, and includes all modifications within the meaning and scope of the claims. In this first embodiment, the front-to-back direction is defined as the positive direction of the X axis in FIGS. 1 to 11. The left-to-right direction is defined as the positive direction of the Y axis in FIGS. 2, 5, and 8. The left-to-right direction and the width direction are used synonymously. The up-to-down direction is defined as the positive direction of the Z axis in FIGS. 1, 3, 4, 6, 7, 9 to 11.

[0012] The manufacturing apparatus of this embodiment 1 is an apparatus for manufacturing a laminated electrode body 10 (see FIG. 11 ) configured by alternately stacking a plurality of sheet-like negative electrodes 11 and a plurality of sheet-like positive electrodes 12 with separators 13 sandwiched therebetween. The manufacturing apparatus includes a stacking table 15, an arrangement device 20, a supplying device 30, and a cutting device 46. The stacking table 15 is used to stack the plurality of negative electrodes 11, the plurality of positive electrodes 12, and the separators 13. On the stacking table 15, the plurality of negative electrodes 11 are arranged in a line in the front-rear direction, and the plurality of positive electrodes 12 are arranged in a line in the front-rear direction.

[0013] As shown in Fig. 1, the arrangement device 20 includes a take-up roll 21 around which one long flexible separator 13 is wound, a movable chuck 22, a plurality of movable rollers 23A and 23B, and a plurality of deflection rollers 24A, 24B, and 24C. The take-up roll 21 has its axis oriented in the left-right direction and is disposed at the upper rear of the stacking table 15. The separator 13 is unwound from the take-up roll 21 so as to hang downward. The portion of the separator 13 that extends downward from the take-up roll 21 is defined as a unwinding portion 13D.

[0014] The movable chuck 22 is adapted to reciprocate in the front-to-rear direction (horizontal direction) between an initial position (not shown) and a withdrawal position (see FIGS. 1 and 2) forward of the initial position by a drive mechanism (not shown). The direction of movement of the movable chuck 22 from the initial position to the withdrawal position is parallel to the arrangement direction of the negative electrodes 11 and the arrangement direction of the positive electrodes 12 on the stacking table 15. The height of the movement path of the movable chuck 22 is slightly above the upper surface of the stacking table 15. The initial position is a position where the movable chuck 22 can chuck the lower end of the feed portion 13D of the separator 13. The withdrawal position is set to a position forward of the front end of the stacking table 15.

[0015] A plurality of deflecting rollers 24A, 24B, and 24C are rotatably provided below the winding roll 21. The deflecting rollers 24A, 24B, and 24C are arranged at intervals along the front surface of the downward-facing payout portion 13D of the separator 13. A plurality of movable rollers 23A and 23B are rotatably provided below the winding roll 21. The movable rollers 23A and 23B are arranged at heights between adjacent deflecting rollers 24A, 24B, and 24C in the vertical direction. Each of the movable rollers 23A and 23B is reciprocated in the front-to-rear direction (horizontally) by a drive mechanism (not shown) between a standby position (see FIG. 1) behind the payout portion 13D of the separator 13 and an installation position (see FIG. 9) ahead of the standby position. The direction of movement of the movable rollers 23A, 23B between the standby position and the installation position is parallel to the direction in which the negative electrodes 11 and positive electrodes 12 are arranged on the stacking table 15. The movable rollers 23A, 23B are set behind the stacking table 15. The installation position is set forward of the stacking table 15.

[0016] As shown in FIGS. 2, 5, and 8, the supply device 30 includes a negative electrode storage section 31, a positive electrode storage section 32, a negative electrode supply mechanism 33, a positive electrode supply mechanism 36, a negative electrode transfer mechanism 40, and a positive electrode transfer mechanism 43. The negative electrode storage section 31 is box-shaped with an open top and is located behind and to the right of the stacking table 15. A plurality of horizontally oriented negative electrodes 11 are stored in the negative electrode storage section 31 in a vertically stacked state. The positive electrode storage section 32 is box-shaped with an open top and is located behind and to the left of the stacking table 15. A plurality of horizontally oriented positive electrodes 12 are stored in the positive electrode storage section 32 in a vertically stacked state.

[0017] The negative electrode supply mechanism 33 is disposed to the right of the stacking table 15, and is moved back and forth in the left-right direction by a drive mechanism (not shown) between a preparation position (see FIGS. 1 and 5) spaced apart from the stacking table 15 and a supply position (see FIG. 8) closer to the stacking table 15 than the preparation position. The negative electrode supply mechanism 33 has one negative electrode support member 34 that is elongated in the front-rear direction, and multiple negative electrode holding members 35. The multiple negative electrode holding members 35 extend in a cantilevered manner from the negative electrode support member 34 toward the stacking table 15, and are arranged side by side in the front-rear direction. Each negative electrode holding member 35 operates to hold a negative electrode 11 and to release the held negative electrode 11.

[0018] The positive electrode supply mechanism 36 is disposed to the left of the stacking table 15, and is moved back and forth in the left-right direction by a drive mechanism (not shown) between a preparation position (see FIGS. 2 and 8) spaced apart from the stacking table 15 and a supply position (see FIG. 5) closer to the stacking table 15 than the preparation position. The positive electrode supply mechanism 36 has one positive electrode support member 37 that is elongated in the front-rear direction, and multiple positive electrode holding members 38. The multiple positive electrode holding members 38 extend in a cantilevered manner from the positive electrode support member 37 toward the stacking table 15 and are arranged side by side in the front-rear direction. The positive electrode holding member 38 performs an operation of holding a positive electrode 12 and an operation of releasing the held positive electrode 12.

[0019] The negative electrode transport mechanism 40 has a negative electrode movable member 41 driven by a drive mechanism (not shown), and a negative electrode suction cup 42 held by the negative electrode movable member 41 (see FIG. 2). The negative electrode suction cup 42 holds the negative electrode 11 in an adsorbed state and can release the held negative electrode 11. The negative electrode suction cup 42 moves between a position where it holds the negative electrode 11 in the negative electrode storage section 31 and a position where it causes the held negative electrode 11 to be held by each holding section.

[0020] The positive electrode transport mechanism 43 has a positive electrode movable member 44 driven by a drive mechanism (not shown), and a positive electrode suction cup 45 held by the positive electrode movable member 44. The positive electrode suction cup 45 is capable of holding the positive electrode 12 in an adsorbed state and releasing the held positive electrode 12. The positive electrode suction cup 45 moves between a position where it holds the positive electrode 12 in the positive electrode reservoir 32 and a position where it causes the held positive electrode 12 to be held by each holder.

[0021] 10, the cutting device 46 is disposed above the stacking table 15. The cutting device 46 includes a lifting member 47 that is driven to move up and down by a drive mechanism (not shown), and a plurality of cutters 48 that protrude downward from the lifting member 47. The plurality of cutters 48 have elongated cutting blades that extend in the left-right direction, and are disposed at intervals in the front-rear direction.

[0022] Next, the manufacturing process of the stacked electrode assembly 10 will be described. First, with the negative electrode supply mechanism 33 in the standby position, the negative electrode suction cups 42 of the negative electrode supply mechanism 33 attract the negative electrodes 11 in the negative electrode reservoir 31, and the negative electrodes 11 are held by the negative electrode holders 35 of the negative electrode supply mechanism 33. After all of the negative electrode holders 35 have held the negative electrodes 11, the negative electrode supply mechanism 33 moves from the standby position to the supply position, and the negative electrodes 11 held by the negative electrode holders 35 are placed on the upper surface of the stacking table 15. The negative electrode holders 35 are arranged in a line in the front-to-rear direction, and therefore the negative electrodes 11 are arranged in a line in the front-to-rear direction on the upper surface of the stacking table 15. Also, around the same time as this process, the positive electrode supply mechanism 36 holds the positive electrodes 12 in the holders of the positive electrode supply mechanism 36 in the standby position.

[0023] Next, the movable chuck 22 grips the lower end of the feed portion 13D of the separator 13 and pulls the separator 13 horizontally forward while hooking it onto the first turning roller 24A, which is located at the lowest position. As a result, as shown in FIGS. 1 and 2, a single flat surface 16A (hereinafter, the first flat surface 16A) extending in the horizontal direction (front-to-back direction) is disposed above the multiple negative electrodes 11 on the stacking table 15. The first flat surface 16A is the portion of the separator 13 between the movable chuck 22 and the first turning roller 24A. While the movable chuck 22 is disposing the first flat surface 16A, the negative electrode supply mechanism 33 returns to the standby position, and the negative electrode 11 is held by the negative electrode holding member 35.

[0024] Next, the positive electrode supply mechanism 36 moves from the preparation position to the supply position, and the positive electrodes 12 individually held by the positive electrode holding members 38 are supplied to the upper surface of the first flat portion 16A. Since the positive electrode holding members 38 are arranged in a line in the front-rear direction, the positive electrodes 12 are also placed in a line in the front-rear direction. The positive electrodes 12 placed on the first flat portion 16A are individually positioned directly above the negative electrodes 11 on the stacking table 15 (see FIGS. 4 and 5).

[0025] After this, the lowest first movable roller 23A moves from the standby position to the installation position. At this time, the first movable roller 23A pushes the feed portion 13D of the separator 13 forward while passing between the first turning roller 24A and the second lowest second turning roller 24B, pushing the separator 13 forward. As shown in FIG. 6 , when the first movable roller 23A reaches the installation position, the second flat portion 16B and the third flat portion 16C are simultaneously installed. The second flat portion 16B is a portion of the separator 13 between the first turning roller 24A and the first movable roller 23A, and is positioned above the first flat portion 16A in a state stretched in the front-to-rear direction. The third flat portion 16C is a portion of the separator 13 between the second turning roller 24B and the first movable roller 23A, and is positioned above the second flat portion 16B in a state stretched in the front-to-rear direction.

[0026] 7 and 8, the negative electrode supply mechanism 33 supplies a plurality of negative electrodes 11 between the second flat portion 16B and the third flat portion 16C. The supplied negative electrodes 11 are placed on the second flat portion 16B in a lined-up state in the front-to-back direction. The negative electrodes 11 on the second flat portion 16B are positioned directly above the positive electrodes 12 on the first flat portion 16A. Then, a plurality of positive electrodes 12 are placed on the third flat portion 16C in a lined-up state in the front-to-back direction. Then, the second movable member 23B moves from the standby position to the placement position, thereby placing the fourth flat portion 16D and the fifth flat portion 16E above the third flat portion 16C. Then, as shown in FIG. 9, a plurality of negative electrodes 11 are placed on the fourth flat portion 16D in a lined-up state in the front-to-back direction.

[0027] Thereafter, when the deflecting rollers 24A, 24B, and 24C and the movable rollers 23A and 23B are removed from the separator 13, the separator 13 is formed into a zigzag shape in which the plurality of flat surfaces 16A, 16B, 16C, 16D, and 16E are connected via the folded portion 17. The separator 13 is cut at the folded portion 17 where the fourth flat surface 16D and the fifth flat surface 16E are connected. On the upper surface of the stacking table 15, the plurality of negative electrodes 11 aligned in the front-rear direction, the plurality of positive electrodes 12 aligned in the front-rear direction, and the plurality of flat surfaces 16A, 16B, 16C, 16D, and 16E are stacked vertically.

[0028] Thereafter, as shown in FIG. 10 , a cutting device 46 descends, and the planar portions 16A, 16B, 16C, 16D, and 16E are cut by a plurality of cutters 48 arranged at intervals in the front-rear direction. The cutting positions are between the electrodes 11 and 12 adjacent in the front-rear direction. The folded portion 17 is also cut, and the planar portions 16A, 16B, 16C, 16D, and 16E that were connected via the folded portion 17 are separated. As shown in FIG. 11 , this cutting process results in a plurality of stacked electrode bodies 10 arranged in the front-rear direction, each of which has a configuration in which a plurality of negative electrodes 11 and a plurality of positive electrodes 12 are stacked with separators 13 interposed therebetween.

[0029] The manufacturing apparatus for the laminated electrode body 10 of the first embodiment includes an arrangement device 20, a supply device 30, and a cutting device 46. The arrangement device 20 divides a sheet-like separator 13 into a plurality of planar portions 16A, 16B, 16C, 16D, and 16E. The plurality of planar portions 16A, 16B, 16C, 16D, and 16E divided by the arrangement device 20 are arranged so as to be stacked one above the other with the electrodes 11 and 12 interposed therebetween. The supply device 30 includes a negative electrode supply mechanism 33 and a positive electrode supply mechanism 36. The negative electrode supply mechanism 33 supplies a plurality of negative electrodes 11 that constitute the laminated electrode body 10 so as to be aligned along one of the planar portions 16A, 16B, 16C, 16D, and 16E. The positive electrode supply mechanism 36 supplies the plurality of positive electrodes 12 that constitute the stacked electrode body 10 so that they are aligned along one of the planar portions 16A, 16B, 16C, 16D, and 16E. The cutting device 46 cuts the planar portions 16A, 16B, 16C, 16D, and 16E between the electrodes 11 and 12 in a state in which the plurality of planar portions 16A, 16B, 16C, 16D, and 16E and the plurality of electrodes 11 and 12 aligned along the planar portions 16A, 16B, 16C, 16D, and 16E are stacked.

[0030] In a manufacturing method using this manufacturing apparatus, a sheet-like separator 13 is divided into a plurality of planar portions 16A, 16B, 16C, 16D, and 16E, and the plurality of planar portions 16A, 16B, 16C, 16D, and 16E are stacked with the electrodes 11 and 12 sandwiched between them. Next, the electrodes 11 and 12 that constitute the laminated electrode body 10 are supplied so that the plurality of electrodes 11 and 12 are aligned along one of the planar portions 16A, 16B, 16C, 16D, and 16E. Next, with the plurality of planar portions 16A, 16B, 16C, 16D, and 16E and the plurality of electrodes 11 and 12 aligned along the planar portions 16A, 16B, 16C, 16D, and 16E stacked, the planar portions 16A, 16B, 16C, 16D, and 16E are cut between the electrodes 11 and 12. According to the manufacturing apparatus and manufacturing method of the first embodiment, the plurality of electrodes 11 and 12 (laminated electrode body 10) are arranged side by side along one of the planar portions 16A, 16B, 16C, 16D, and 16E, which provides excellent productivity.

[0031] The arrangement device 20 bends the separator 13 in a zigzag shape to form a plurality of planar portions 16A, 16B, 16C, 16D, and 16E that are connected via the fold-back portions 17. The planar portions 16A, 16B, 16C, 16D, and 16E can be stacked with the electrodes 11 and 12 while the plurality of planar portions 16A, 16B, 16C, 16D, and 16E remain connected via the fold-back portions 17. This eliminates the need to cut the separator 13 and separate the planar portions 16A, 16B, 16C, 16D, and 16E one by one every time an electrode 11 or 12 is supplied, thereby improving productivity.

[0032] The arrangement device 20 pulls a part (feed-out portion 13D) of the separator 13 hanging vertically in the horizontal direction, thereby forming two flat portions 16A, 16B, 16C, 16D, and 16E that are connected to one folded-back portion 17. Since the two flat portions 16A, 16B, 16C, 16D, and 16E can be arranged with a single action, production efficiency is high.

[0033] [Embodiment 2] A second embodiment of the present disclosure will be described with reference to Figures 12 to 18. In this second embodiment, with regard to the front-to-back direction, the positive direction of the X axis in Figures 12 to 18 is defined as the front. With regard to the up-down direction, the positive direction of the Z axis in Figures 12 to 18 is defined as the up.

[0034] The manufacturing apparatus of this embodiment 2 is an apparatus for manufacturing a laminated electrode body 10 (see FIG. 18) configured by alternately stacking a plurality of sheet-like negative electrodes 11 and a plurality of sheet-like positive electrodes 12 with separators 13 sandwiched therebetween. The manufacturing apparatus is equipped with a stacking table 15, an arrangement device 50, a supply device 30 (not shown), and a cutting device 60. The laminated electrode body 10, negative electrodes 11, and positive electrodes 12 are the same members as in embodiment 1, and the supply device 30 has the same configuration as in embodiment 1, so they are denoted by the same reference numerals and detailed description thereof will be omitted.

[0035] 12, the arrangement device 50 includes a winding roll 21 around which one long flexible separator 13 is wound, a movable chuck 51, and one separation cutting blade 52. The winding roll 21 has its axis oriented in the left-right direction and is disposed behind the stacking table 15. The separator 13 is unwound forward from the upper end of the winding roll 21. The portion of the separator 13 that extends forward from the winding roll 21 is defined as the unwound portion 13D.

[0036] The movable chuck 51 is adapted to reciprocate in the front-to-rear direction (horizontally) between an initial position (not shown) and a withdrawal position (see FIGS. 12 and 15) forward of the initial position by a drive mechanism (not shown). The direction of movement of the movable chuck 51 from the initial position to the withdrawal position is parallel to the arrangement direction of the negative electrodes 11 and the arrangement direction of the positive electrodes 12 on the stacking table 15. The height of the movement path of the movable chuck 51 is above the upper surface of the stacking table 15. The initial position is a position where the movable chuck 51 can chuck the front end of the payout portion 13D of the separator 13. The withdrawal position is set at a position forward of the front end of the stacking table 15. The separation cutting blade 52 is arranged at a position forward of the winding roll 21.

[0037] The cutting device 60 is disposed above the stacking table 15. The cutting device 60 includes a lifting member 61 that is driven to move up and down by a drive mechanism (not shown), and a plurality of cutters 62 that protrude downward from the lifting member 61. The plurality of cutters 62 have elongated cutting blades that extend in the left-right direction, and are disposed at intervals in the front-rear direction.

[0038] Next, the manufacturing process of the stacked electrode assembly 10 will be described. First, with the negative electrode supply mechanism 33 (not shown) in the standby position, the negative electrode suction cups 42 of the negative electrode transport mechanism 40 (not shown) attract the negative electrodes 11 in the negative electrode reservoir 31 (not shown) and hold them on each negative electrode holding member 35 of the negative electrode supply mechanism 33. After all of the negative electrode holding members 35 have held the negative electrodes 11, the negative electrode supply mechanism 33 moves from the standby position to the supply position, and the multiple negative electrodes 11 held by the negative electrode holding members 35 are placed on the upper surface of the stacking table 15. The multiple negative electrode holding members 35 are arranged in a line in the front-to-rear direction, so that the multiple negative electrodes 11 are arranged in a line in the front-to-rear direction on the upper surface of the stacking table 15. Also, around the same time as this process, the positive electrode transport mechanism 43 holds the positive electrodes 12 on each positive electrode holding member 38 of the positive electrode supply mechanism 36 in the standby position.

[0039] Next, the movable chuck 51 grips the front end of the feed portion 13D of the separator 13 and pulls the separator 13 horizontally forward. As a result, as shown in FIG. 12, one flat portion 18A (hereinafter referred to as the first flat portion 18A) extending in the horizontal direction (front-to-back direction) is disposed above the multiple negative electrodes 11 on the stacking table 15. After the first flat portion 18A is disposed, the separation cutting blade 52 descends and separates the rear end of the first flat portion 18A from the feed portion 13D, as shown in FIG. 13. While the movable chuck 51 is disposing the first flat portion 18A, the negative electrode supply mechanism 33 returns to the standby position, and the negative electrodes 11 are held by each negative electrode holding member 35.

[0040] Next, a plurality of positive electrodes 12 are supplied to the upper surface of the first flat portion 18A by the positive electrode supply mechanism 36. Since the plurality of positive electrode holding members 38 are arranged so as to be aligned in the front-rear direction, the plurality of positive electrodes 12 are also placed so as to be aligned in the front-rear direction. The plurality of positive electrodes 12 placed on the first flat portion 18A are individually positioned directly above the plurality of negative electrodes 11 on the stacking table 15 (see FIG. 14).

[0041] Next, the movable chuck 51, which has returned to its initial position, grips the front end of the feed portion 13D of the separator 13 and pulls the separator 13 horizontally forward. As a result, as shown in FIG. 15, the second flat portion 18B, which extends in the horizontal direction (front-to-back direction), is disposed above the multiple positive electrodes 12 placed on the first flat portion 18A. After the second flat portion 18B is disposed, the separation cutting blade 52 descends and separates the rear end of the second flat portion 18B from the feed portion 13D, as shown in FIG. 16. While the second flat portion 18B is being disposed, the negative electrode supply mechanism 33 returns to the ready position, and the negative electrode 11 is held by each negative electrode holding member 35, and the positive electrode supply mechanism 36 returns to the ready position, and the positive electrode 12 is held by each positive electrode holding member 38.

[0042] Next, a plurality of negative electrodes 11 are supplied to the upper surface of the second flat surface portion 18B by the negative electrode supply mechanism 33. Since the plurality of negative electrode holding members 35 are arranged in a line in the front-rear direction, the plurality of negative electrodes 11 are also placed in a line in the front-rear direction. The plurality of negative electrodes 11 placed on the second flat surface portion 18B are individually positioned directly above the plurality of positive electrodes 12 on the stacking table 15 (see FIG. 17). Thereafter, by repeating the same process as above, the third flat surface portion 18C and the fourth flat surface portion 18D are disposed, and a plurality of positive electrodes 12 are supplied to the upper surface of the third flat surface portion 18C, and a plurality of negative electrodes 11 are supplied to the upper surface of the fourth flat surface portion 18D.

[0043] Thereafter, the cutting device 60 is operated, and the flat portions 18A, 18B, 18C, 18D, and 18E are cut by a plurality of cutters 62. The cutting positions are the portions between the electrodes 11 and 12 adjacent in the front-rear direction. By this cutting, the flat portions 18A, 18B, 18C, and 18D are separated, and a plurality of stacked electrode bodies 10, each having a configuration in which a plurality of negative electrodes 11 and a plurality of positive electrodes 12 are stacked with separators 13 interposed therebetween, are formed in a state lined up in the front-rear direction.

[0044] The manufacturing apparatus for the laminated electrode body 10 of the second embodiment includes an arrangement device 50, a supply device 30, and a cutting device 60. The arrangement device 50 divides a sheet-like separator 13 into a plurality of planar portions 18A, 18B, 18C, and 18D. The planar portions 18A, 18B, 18C, and 18D divided by the arrangement device 50 are arranged so as to be stacked one above the other with the electrodes 11 and 12 interposed therebetween. The supply device 30 includes a negative electrode supply mechanism 33 and a positive electrode supply mechanism 36. The negative electrode supply mechanism 33 supplies a plurality of negative electrodes 11 that constitute the laminated electrode body 10 so as to be aligned along one of the planar portions 18A, 18B, 18C, and 18D. The positive electrode supply mechanism 36 supplies a plurality of positive electrodes 12 that constitute the laminated electrode body 10 so as to be aligned along one of the planar portions 18A, 18B, 18C, and 18D. In a state in which the plurality of planar portions 18A, 18B, 18C, 18D and the plurality of electrodes 11, 12 aligned along the planar portions 18A, 18B, 18C, 18D are stacked, the cutting device 60 cuts the planar portions 18A, 18B, 18C, 18D between the electrodes 11, 12. According to the manufacturing device and manufacturing method of the present embodiment 2, the plurality of electrodes 11, 12 are arranged aligned along one planar portion 18A, 18B, 18C, 18D, and therefore productivity is excellent.

[0045] <Other Examples> The present invention is not limited to the embodiments described above and illustrated in the drawings, and the following embodiments are also included within the technical scope of the present invention. The electrodes may be arranged so as to be aligned in the front-to-back and left-to-right directions along one plane portion. The separator may be bent into a zigzag shape by unwinding the separator while reciprocating a roll around which the separator is wound. [Explanation of symbols]

[0046] 10...Laminated electrode body 11...Negative electrode (electrode) 12...Positive electrode (electrode) 13...Separator 16A, 18A...1st plane part (plane part) 16B, 18B…Second plane part (plane part) 16C,18C...Third plane part (plane part) 16D, 18D...4th plane part (plane part) 16E...Fifth plane part (plane part) 14...Folding section 20,50...Installation device 30…Feeding device 46,60...cutting device

Claims

1. an arrangement device that divides a sheet-like separator into a plurality of planar sections and arranges the plurality of planar sections so as to be stacked; a supply device that supplies electrodes constituting the laminated electrode body so that a plurality of the electrodes are arranged along one of the planar portions; a cutting device configured to cut the planar portions between the electrodes in a state in which the planar portions and the electrodes arranged along the planar portions are stacked, The arrangement device is a manufacturing device for a laminated electrode body that forms a plurality of the planar portions connected via folded portions by bending the separator in a zigzag shape.

2. The arrangement device is a manufacturing apparatus for a laminated electrode body as described in Claim 1, which forms two planar portions connected to one folded portion by pulling a portion of the separator hanging vertically in the horizontal direction.

3. A method of dividing a sheet-like separator into a plurality of planar sections connected via folded sections by bending the sheet-like separator in a zigzag shape, and arranging the plurality of planar sections so as to be stacked; The electrodes constituting the laminated electrode body are supplied so that a plurality of the electrodes are arranged along one of the planar portions; A method for manufacturing a laminated electrode body, in which the flat portions and the electrodes arranged along the flat portions are stacked, and the flat portions are cut between the electrodes.

4. An extension process in which a portion of the separator hanging vertically is pulled horizontally to form two planar portions connected to one folded portion; The method for manufacturing a laminated electrode body according to claim 3 , wherein a supplying step of supplying the plurality of electrodes so as to be aligned along the flat surface portion is repeated.

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