JP6950491B2 - Transport device - Google Patents

Description

The present invention relates to a transport device.

Patent Document 1 describes an electrode laminating device including a first conveyor unit, a second conveyor unit, and an electrode plate support (laminated portion). In this electrode laminating device, the electrode plates are conveyed to the support plates of the electrode support by the first transfer conveyor unit and the second transfer conveyor unit, and a plurality of electrode plates are laminated on the support plates. Then, after the electrode plate is laminated on the support plate of the electrode support, the electrode support is moved to a subsequent process by the transport device.

U.S. Patent Application Publication No. 2011/0259712

In the manufacturing process of the power storage device, electrodes may be laminated at the same time on a plurality of lines. For example, when two electrodes are cut out from the electrode base material in the width direction, that is, so-called double striping is performed, the electrodes are laminated at the same time on the two lines, and the electrodes are laminated on the two laminated portions. Like the electrode laminating device described in Patent Document 1, the laminated portion on which the electrode laminated body is formed is transported to a subsequent process by the transport device. However, when the electrodes are laminated at the same time on a plurality of lines, a drive unit is provided for each laminated portion, so that the transport device may become large and the installation area of the transport device may increase.

The present invention provides a transfer device capable of miniaturization.

The transport device according to one aspect of the present invention includes a laminating jig in which a sheet-shaped electrode is laminated along a first direction by a first electrode laminating device and a second electrode laminating device to form an electrode laminated body. It is provided with a transport mechanism for transporting the laminating jig on which the electrode laminate is formed toward a subsequent process. The laminating jig includes a first laminating portion in which the electrode laminating body is formed by the first electrode laminating device, and a second laminating portion in which the electrode laminated body is formed by the second electrode laminating device. The first laminated portion and the second laminated portion are integrated with each other.

In this transfer device, the first electrode laminating device forms an electrode laminated body in the first laminating portion of the laminating jig, and the second electrode laminating device forms an electrode laminated body in the second laminating portion of the laminating jig. Then, the laminating jig on which the electrode laminated body is formed is conveyed to the subsequent process by the conveying mechanism. Since the first laminated portion and the second laminated portion are integrated, it is not necessary to provide a conveying mechanism for each electrode laminating device, and the conveying mechanism is common to the first electrode laminating device and the second electrode laminating device. Can be transformed into. As a result, the transport device can be miniaturized.

The transport mechanism may transport the laminating jig along the horizontal direction from the laminating position where the electrodes are laminated by the first electrode laminating device and the second electrode laminating device. For example, when the laminating jig is transported upward from the laminating position in the vertical direction, foreign matter such as active material particles adhering to the electrodes may fall on the first electrode laminating device and the second electrode laminating device. Therefore, by transporting the laminating jig along the horizontal direction from the laminating position, it is possible to suppress the falling of foreign matter and reduce the possibility that the electrode laminated body is defective.

The transport mechanism may transport the laminating jig along the vertical direction from the laminating position where the electrodes are laminated by the first electrode laminating device and the second electrode laminating device. For example, a stacking auxiliary unit for positioning the electrodes to be laminated on the stacking jig may be provided. Even in such a case, in the above configuration, the laminating jig can be conveyed without retracting the laminating auxiliary unit. Therefore, it is possible to simplify the first electrode laminating device and the second electrode laminating device.

The transport mechanism may include a first elevating mechanism capable of raising and lowering the stacking jig in the vertical direction, and a first moving mechanism capable of moving the first elevating mechanism in the horizontal direction. In this case, after the laminating jig is transported along the vertical direction, the laminating jig can be further conveyed along the horizontal direction. Therefore, the laminating jig is conveyed from the laminating position along the vertical direction, and the subsequent process is performed at a position different from the position where the first electrode laminating device and the second electrode laminating device are installed when viewed from the vertical direction. It becomes possible.

The transport mechanism may further include a second elevating mechanism capable of raising and lowering another laminating jig along the vertical direction, and a second moving mechanism capable of moving the second elevating mechanism along the horizontal direction. The first moving mechanism and the second moving mechanism may be arranged in parallel so as to sandwich the stacking position when viewed from the vertical direction. In this case, while the laminating jig on which the electrode laminated body is formed is conveyed and the post-process is performed, another laminating jig is arranged at the laminating position by the second elevating mechanism and the second moving mechanism, and the other laminating is performed. An electrode laminate can be formed on the jig. Therefore, the post-process and the process of forming the electrode laminate on the lamination jig can be performed in parallel.

The first direction may be the vertical direction, and the first elevating mechanism may adjust the position of the laminating jig when the electrode laminated body is formed along the first direction. In this case, the transport direction for transporting the laminating jig and the direction for adjusting the position of the laminating jig when the electrode laminate is formed coincide with each other. Therefore, apart from the first elevating mechanism, it is not necessary to provide a mechanism for adjusting the position of the laminating jig when the electrode laminated body is formed, so that the transport device can be simplified.

The laminating jig may further include a wall portion extending along the first direction and separating the first laminating portion and the second laminating portion. The first laminated portion and the second laminated portion are arranged along the first direction and fixed to the wall portion, and a plurality of laminated members in which electrodes are laminated along the first direction and along the first direction. A plurality of sandwiching members for sandwiching the electrode laminates arranged and formed on the laminated member along the first direction may be provided. In this case, the electrode laminates formed in the first laminated portion and the second laminated portion can be sandwiched along the first direction by the laminated member and the sandwiching member. This makes it possible to suppress the misalignment of the electrode laminate.

The laminating jig may be rotatable about a rotation axis penetrating the wall along the first direction. In this case, after carrying out the electrode laminated body formed on one of the first laminated portion and the second laminated portion, the laminating jig is rotated around the rotation axis to rotate the other of the first laminated portion and the second laminated portion. The electrode laminate formed in the above can be carried out. As a result, the electrode laminates formed in the first laminated portion and the second laminated portion can be transported to the subsequent process using a common transport path. Therefore, it is not necessary to merge the transport routes, and the transport routes can be simplified.

The plurality of sandwiching members may be movable independently of each other along the first direction. In this case, when the electrode laminate formed on the stacking jig is taken out from the stacking jig, it is possible to release only the sandwiching of the electrode laminate to be taken out without releasing the sandwiching of the other electrode laminates. .. Therefore, even when the electrode laminates formed on the stacking jig are taken out one by one, it is possible to suppress the misalignment of the other electrode laminates.

The transfer device may further include a receiving jig for receiving the electrode laminate formed on the laminate jig. The receiving jigs may be arranged along the first direction and may include a plurality of gripping portions for gripping the electrode laminate. The plurality of sandwiching members may be integrally movable along the first direction. The plurality of grips may be able to operate independently of each other. In this case, by making the plurality of sandwiching members integrally movable along the first direction, for example, the drive unit can be shared, and the stacking jig can be miniaturized. This makes it possible to further reduce the size of the transport mechanism. On the other hand, since the plurality of gripping portions of the receiving jig can operate independently of each other, when the electrode laminated body is taken out from the receiving jig, the gripping of the other electrode laminated body is not released and the taking-out target is taken. Only the gripping of the electrode laminate can be released. Therefore, even when the electrode laminates are taken out one by one from the receiving jig, it is possible to suppress the misalignment of the other electrode laminates.

The outer edge of the laminated member may be formed with a first notch penetrating the laminated member along the first direction, and the outer edge of the sandwiching member may be formed with a second notch penetrating the sandwiching member along the first direction. Notches may be formed. The first notch and the second notch may overlap each other along the first direction. The plurality of grips may grip the electrode laminate through the first notch and the second notch. In this case, when the electrode laminate formed on the laminate jig is delivered to the receiving jig, the grip portion is the first member of the laminate member while the electrode laminate is sandwiched between the laminate member and the sandwiching member. The electrode laminate can be gripped through the notch and the second notch of the holding member. That is, it is not necessary to release the sandwiching of the electrode laminate when the electrode laminate is delivered. Therefore, it is possible to suppress the misalignment of the electrode laminate.

The tabs of the electrodes introduced by the first electrode laminating device and the tabs of the electrodes introduced by the second electrode laminating device may project in opposite directions. In the upstream process, when two electrodes are cut out from the electrode base material in the width direction, so-called double striping, when the electrodes are manufactured, the electrodes can be laminated without changing the direction of the manufactured electrodes. .. This makes it possible to simplify the transfer path of the electrodes.

According to the present invention, the transport device can be miniaturized.

FIG. 1 is a cross-sectional view showing the inside of a power storage device manufactured by applying the transfer device according to the embodiment. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. FIG. 3 is a plan view showing a manufacturing facility including the transport device according to the first embodiment. FIG. 4 is a side view (including a partial cross section) showing the electrode laminating device shown in FIG. 5 (a) and 5 (b) are plan views showing the configurations of the partition plate and the positioning pusher shown in FIG. FIG. 6 is a side view showing the configuration of the partition plate shown in FIG. FIG. 7 is a side view showing the transport device shown in FIG. FIG. 8 is a side view showing the laminating jig shown in FIG. FIG. 9 is a plan view showing the laminating jig shown in FIG. 10 (a) is a perspective view of the sandwiching member shown in FIG. 8, and FIG. 10 (b) is a perspective view of the laminated member shown in FIG. FIG. 11 is a perspective view showing the laminating jig shown in FIG. FIG. 12A is a plan view showing the pallet shown in FIG. 3, and FIG. 12B is a side view showing the pallet shown in FIG. FIG. 13 is a diagram for explaining the operation of the manufacturing equipment shown in FIG. FIG. 14 is a diagram for explaining the operation of the manufacturing equipment shown in FIG. FIG. 15 is a diagram for explaining the operation of the manufacturing equipment shown in FIG. FIG. 16 is a diagram for explaining the operation of the manufacturing equipment shown in FIG. FIG. 17 is a plan view showing a manufacturing facility including the transfer device according to the second embodiment. FIG. 18 is a side view showing the laminating jig shown in FIG. 19 (a) to 19 (c) are diagrams for explaining the operation of the manufacturing equipment shown in FIG. 20 (a) and 20 (b) are diagrams for explaining the operation of the manufacturing equipment shown in FIG. 21 (a) and 21 (b) are diagrams for explaining the operation of the manufacturing equipment shown in FIG. 22 (a) and 22 (b) are diagrams for explaining the operation of the manufacturing equipment shown in FIG. FIG. 23 is a plan view showing a manufacturing facility including the transfer device according to the third embodiment. FIG. 24 is a side view (including a partial cross section) showing the transport device shown in FIG. 23. 25 (a) and 25 (b) are diagrams for explaining the operation of the manufacturing equipment shown in FIG. 23. 26 (a) and 26 (b) are diagrams for explaining the operation of the manufacturing equipment shown in FIG. 23.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same reference numerals are used for the same or equivalent elements, and duplicate description is omitted.

FIG. 1 is a cross-sectional view showing the inside of a power storage device manufactured by applying the transfer device according to the embodiment. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. The power storage device 1 shown in FIGS. 1 and 2 is configured as a non-aqueous electrolyte secondary battery such as a lithium ion secondary battery.

The power storage device 1 includes, for example, a case 2 having a substantially rectangular parallelepiped shape and an electrode assembly 3 housed in the case 2. The case 2 is made of a metal such as aluminum. Although not shown, a non-aqueous (organic solvent-based) electrolytic solution is injected into the case 2, for example. The positive electrode terminal 4 and the negative electrode terminal 5 are arranged on the case 2 so as to be separated from each other. The positive electrode terminal 4 is fixed to the case 2 via the insulating ring 6, and the negative electrode terminal 5 is fixed to the case 2 via the insulating ring 7. Further, an insulating film F is arranged between the electrode assembly 3 and the inner side surface and the bottom surface of the case 2, and the insulating film F insulates the case 2 from the electrode assembly 3. The lower end of the electrode assembly 3 is in contact with the inner bottom surface of the case 2 via the insulating film F. By arranging the spacer S between the electrode assembly 3 and the case 2, the gap between the electrode assembly 3 and the case 2 is filled. The spacer S includes one or a plurality of sheets, and the number of the sheets may vary depending on the thickness of the electrode assembly 3.

The electrode assembly 3 has a structure in which a plurality of positive electrodes 8 and a plurality of negative electrodes 9 are alternately laminated via a bag-shaped separator 10. The positive electrode 8 is wrapped in a bag-shaped separator 10. The positive electrode 8 in a state of being wrapped in the bag-shaped separator 10 is configured as a positive electrode 11 (electrode) with a separator. Therefore, the electrode assembly 3 has a structure in which a plurality of positive electrodes 11 with separators and a plurality of negative electrodes 9 are alternately laminated. The electrodes located at both ends of the electrode assembly 3 are negative electrodes 9.

The positive electrode 8 is a sheet-shaped electrode, and has, for example, a metal foil 14 which is a positive electrode current collector made of an aluminum foil, and a positive electrode active material layer 15 formed on both sides of the metal foil 14. The metal foil 14 has a foil main body portion 14a having a rectangular shape in a plan view and a tab 14b integrated with the foil main body portion 14a. The tab 14b projects from the edge of the foil body 14a near one end in the longitudinal direction. Then, the tab 14b penetrates the separator 10 in the vicinity of the side edge in the longitudinal direction of the separator 10. The tab 14b is connected to the positive electrode terminal 4 via the conductive member 12. In FIG. 2, the tab 14b is omitted for convenience.

The positive electrode active material layer 15 is formed on both the front and back surfaces of the foil main body portion 14a. The positive electrode active material layer 15 is a porous layer formed by containing the positive electrode active material and the binder. Examples of the positive electrode active material include composite oxides, metallic lithium, sulfur and the like. Composite oxides include, for example, at least one of manganese, nickel, cobalt and aluminum and lithium.

The negative electrode 9 is a sheet-shaped electrode, and has, for example, a metal foil 16 which is a negative electrode current collector made of copper foil, and a negative electrode active material layer 17 formed on both sides of the metal foil 16. The metal foil 16 has a foil main body portion 16a having a rectangular shape in a plan view and a tab 16b integrated with the foil main body portion 16a. The tab 16b projects from the edge of the foil body 16a near one end in the longitudinal direction. The tab 16b is connected to the negative electrode terminal 5 via the conductive member 13. In FIG. 2, the tab 16b is omitted for convenience.

The negative electrode active material layer 17 is formed on both the front and back surfaces of the foil body portion 16a. The negative electrode active material layer 17 is a porous layer formed by containing the negative electrode active material and the binder. Examples of the negative electrode active material include graphite, highly oriented graphite, mesocarbon microbeads, carbon such as hard carbon and soft carbon, alkali metals such as lithium and sodium, metal compounds, and SiOx (0.5 ≦ x ≦ 1.5). ) And other metal oxides or boron-added carbon and the like.

The separator 10 has a rectangular shape in a plan view. Examples of the material for forming the separator 10 include a porous film made of a polyolefin resin such as polyethylene (PE) and polypropylene (PP), or a woven fabric or non-woven fabric made of polypropylene, polyethylene terephthalate (PET), methyl cellulose and the like. ..

When manufacturing the power storage device 1 configured as described above, first, the positive electrode 11 with a separator and the negative electrode 9 are manufactured, and then the positive electrode 11 with a separator and the negative electrode 9 are alternately laminated to form an electrode laminate. Then, the electrode assembly 3 is obtained by fixing the positive electrode 11 with a separator and the negative electrode 9. Then, after connecting the tab 14b of the positive electrode 11 with a separator to the positive electrode terminal 4 via the conductive member 12, and connecting the tab 16b of the negative electrode 9 to the negative electrode terminal 5 via the conductive member 13, the electrode assembly 3 Is housed in the case 2.

(First Embodiment)
A manufacturing facility including the transfer device according to the first embodiment will be described with reference to FIG. FIG. 3 is a plan view showing a manufacturing facility including the transport device according to the first embodiment. For convenience of explanation, the XYZ Cartesian coordinate system is shown in the following drawings. That is, the direction in which the positive electrode 11 and the negative electrode 9 with a separator are introduced into the laminating jig 52 described later is set as the X-axis, the vertical direction is set as the Z-axis, and the directions orthogonal to the X-axis and the Z-axis are set as the Y-axis. The XY plane defined by the X-axis and the Y-axis is a horizontal plane.

As shown in FIG. 3, the manufacturing equipment 20 forms the electrode laminate 21 by alternately laminating the positive electrode 11 with a separator and the negative electrode 9 in a plurality of lines, and conveys the electrode laminate 21 to a subsequent process. do. In the present embodiment, the electrode laminate 21 is formed by two lines. The manufacturing equipment 20 includes an electrode laminating device 30A (first electrode laminating device), an electrode laminating device 30B (second electrode laminating device), and a transport device 50. Since the electrode laminating device 30A and the electrode laminating device 30B have the same configuration, the electrode laminating device 30B will be described here.

The electrode laminating device 30B will be described with reference to FIGS. 4 to 6. FIG. 4 is a side view (including a partial cross section) showing the electrode laminating device shown in FIG. 5 (a) and 5 (b) are plan views showing the configurations of the partition plate and the positioning pusher shown in FIG. FIG. 6 is a side view showing the configuration of the partition plate shown in FIG.

The electrode laminating device 30B shown in FIG. 4 is an electrode laminated body by alternately laminating a positive electrode 11 with a separator and a negative electrode 9 on a laminating jig 52 described later along the Z-axis direction (vertical direction, first direction). It is a device that forms 21. The electrode lamination device 30B includes a positive electrode transfer unit 31, a negative electrode transfer unit 32, a positive electrode supply conveyor 33, a negative electrode supply conveyor 34, an extrusion unit 35, an extrusion unit 36, a lamination auxiliary unit 38, and a controller 39. And have. Further, the electrode stacking device 30B includes electrode supply sensors 301 and 302 and stacking position sensors 303 and 304.

The positive electrode transport unit 31 is a unit that sequentially transports the positive electrode 11 with a separator while storing it. The positive electrode transport unit 31 drives a loop-shaped circulation member 311 extending along the Z-axis direction, a plurality of support members 312 attached to the outer peripheral surface of the circulation member 311 to support the positive electrode 11 with a separator, and the circulation member 311. It has a drive unit 313 and a drive unit 313.

The circulation member 311 is composed of, for example, an endless belt. The circulation member 311 is arranged apart from each other along the Z-axis direction, is bridged by two rollers supported by a circulation frame extending in the Z-axis direction, and is rotated along with the rotation of each roller. By rotating (circling) the circulation member 311 in this way, each support member 312 circulates and moves. Further, the circulation frame is slidably attached to the support frame fixed to the floor surface in the Z-axis direction, whereby the circulation member 311 moves along the Z-axis direction together with the two rollers. It is possible. In order to prevent the phase shift between the circulation member 311 and the roller, the circulation member 311 may be a belt with teeth and the roller may be a pulley.

The support member 312 is a member having a U-shaped cross section having a bottom wall and a pair of side walls. The bottom wall is a rectangular plate-shaped member attached to the outer peripheral surface of the circulation member 311. The pair of side walls are plate-shaped members erected on both edges of the bottom wall in the direction in which the circulation member 311 circulates. As an example in this embodiment, the side wall is formed in a bifurcated shape. However, the shape of the side wall may be any shape as long as it can support the positive electrode 11 with a separator. The pair of side walls face each other and are separated to an extent that the positive electrode 11 with a separator can be accommodated. The bottom wall and side walls are integrally formed of a metal such as stainless steel. The support member 312 may have a U-shaped cross section on the inside on which the positive electrode 11 with a separator is supported, and may be formed of, for example, two members.

A cushioning material such as a sponge is arranged on the inner surface of the bottom wall. The positive electrode 11 with a separator supplied from the positive electrode supply conveyor 33 to the support member 312 collides with the cushioning material when the transport speed of the positive electrode supply conveyor 33 is high, but the impact of the collision is caused by the cushioning material. It will be relaxed. That is, the cushioning material functions as an impact mitigating portion that cushions the impact on the separator-equipped positive electrode 11 when the support member 312 receives the separator-equipped positive electrode 11. As a result, when the positive electrode 11 with a separator is supplied to the support member 312, peeling of the positive electrode active material layer 15 of the positive electrode 11 with a separator can be suppressed.

The drive unit 313 rotates the circulation member 311 and moves the circulation member 311 along the Z-axis direction. The drive unit 313 rotates the circulation member 311 clockwise when viewed from the side opposite to the electrode stacking device 30A in the Y-axis direction. Therefore, the support member 312 on the positive electrode supply conveyor 33 side rises with respect to the circulation member 311, and the support member 312 on the laminating jig 52 side descends with respect to the circulation member 311. Although not particularly shown, the drive unit 313 moves the circulation member 311 along the Z-axis direction via a rotation motor that rotates (orbits) the circulation member 311 by rotating a roller and an elevating mechanism (not shown). It may have a structure having an elevating motor for moving the motor.

The negative electrode transport unit 32 is a unit that sequentially transports the negative electrode 9 while accumulating the negative electrode 9. The negative electrode transport unit 32 has a loop-shaped circulation member 321 extending along the Z-axis direction, a plurality of support members 322 attached to the outer peripheral surface of the circulation member 321 to support the negative electrode 9, and a drive for driving the circulation member 321. It has a unit 323 and. The structure of the support member 322 is the same as that of the support member 312.

The circulation member 321 is composed of, for example, an endless belt, similarly to the circulation member 311 described above. The circulation member 321 is arranged apart from each other along the Z-axis direction, is bridged by two rollers supported by a circulation frame extending in the Z-axis direction, and is rotated with the rotation of each roller. By rotating (circling) the circulation member 321 in this way, each support member 322 circulates and moves. Further, the circulation frame is slidably attached to the support frame fixed to the floor surface in the Z-axis direction, whereby the circulation member 321 moves along the Z-axis direction together with the two rollers. It is possible. In order to prevent the phase shift between the circulation member 321 and the roller, the circulation member 321 may be a belt with teeth and the roller may be a pulley.

The drive unit 323 rotates the circulation member 321 and moves the circulation member 321 along the Z-axis direction. The drive unit 323 rotates the circulation member 321 counterclockwise when viewed from the side opposite to the electrode stacking device 30A in the Y-axis direction. Therefore, the support member 322 on the negative electrode supply conveyor 34 side rises with respect to the circulation member 321, and the support member 322 on the laminating jig 52 side descends with respect to the circulation member 321. Here, the structure of the support structure and the drive mechanism of the circulation member of the negative electrode transfer unit 32 can be the same as that of the positive electrode transfer unit 31. For example, although not particularly shown, the drive unit 323 includes a rotation motor that rotates (orbits) the circulation member 321 by rotating the rollers, and an elevating mechanism (not shown), as in the drive unit 313. A structure may be configured in which the circulation member 321 is moved along the Z-axis direction via an elevating motor.

The positive electrode supply conveyor 33 conveys the positive electrode 11 with a separator toward the positive electrode transfer unit 31 along the X-axis direction (for example, the horizontal direction), and supplies the positive electrode 11 with a separator to the support member 312 of the positive electrode transfer unit 31. The positive electrode supply conveyor 33 has a plurality of claw portions 33a provided at equal intervals along the circulation direction of the positive electrode supply conveyor 33. The claw portion 33a extends in a direction orthogonal to the circulation direction and comes into contact with the end portion of the positive electrode 11 with a separator rearward in the transport direction. As a result, the positive electrode 11 with a separator is supplied to the positive electrode transport unit 31 at regular intervals.

In the present embodiment, the positive electrode 8 is manufactured by so-called double-row cutting in which two electrodes are cut out from the electrode base material in the width direction in the upstream process, and the positive electrode with a separator is not changed in the direction of each positive electrode 8. 11 is manufactured and supplied to the electrode laminating devices 30A and 30B. Therefore, the tab 14b of the positive electrode 11 with a separator supplied to the positive electrode supply conveyor 33 of the electrode stacking device 30A and the tab 14b of the positive electrode 11 with a separator supplied to the positive electrode supply conveyor 33 of the electrode stacking device 30B are separated from each other. It protrudes in opposite directions.

The negative electrode supply conveyor 34 conveys the negative electrode 9 toward the negative electrode transfer unit 32 along the X-axis direction (horizontal direction), and supplies the negative electrode 9 to the support member 322 of the negative electrode transfer unit 32. The negative electrode supply conveyor 34 has a plurality of claws 34a provided at equal intervals along the circulation direction of the negative electrode supply conveyor 34. The claw portion 34a extends in a direction orthogonal to the circulation direction and comes into contact with the end portion of the negative electrode 9 rearward in the transport direction. As a result, the negative electrode 9 is supplied to the negative electrode transport unit 32 at regular intervals.

In the present embodiment, the negative electrode 9 is manufactured by so-called double-row cutting in which two electrodes are cut out from the electrode base material in the width direction in the upstream process, and the electrode laminating device does not change the direction of each negative electrode 9. It is supplied to 30A and 30B. Therefore, the tab 16b of the negative electrode 9 supplied to the negative electrode supply conveyor 34 of the electrode stacking device 30A and the tab 16b of the negative electrode 9 supplied to the negative electrode supply conveyor 34 of the electrode stacking device 30B are opposite to each other. It is protruding.

The positive electrode 11 with a separator transferred from the positive electrode supply conveyor 33 to the support member 312 of the positive electrode transport unit 31 circulates so as to rise and then fall due to the rotation of the circulation member 311. At this time, the front and back sides of the positive electrode 11 with a separator are inverted at the upper part of the circulation member 311 and are positioned on the base end (root) side of the support member 312. The negative electrode 9 transferred from the negative electrode supply conveyor 34 to the support member 322 of the negative electrode transport unit 32 circulates so as to rise and then fall due to the rotation of the circulation member 321. At this time, the front and back sides of the negative electrode 9 are reversed at the upper part of the circulation member 321.

The extrusion unit 35 simultaneously extrudes a plurality of (six here) positive electrodes with separators 11 toward a laminated member 523 (see FIG. 8) having a plurality of upper and lower stages (here, six upper and lower stages), thereby causing six positive electrodes with separators. 11 is simultaneously laminated on the 6-stage laminated member 523. The extrusion unit 35 has a pair of extrusion members 351 that push the six separator-equipped positive electrodes 11 together, and a drive unit 352 that moves the extrusion members 351 toward the six-stage laminated member 523. The drive unit 352 is composed of, for example, a motor and a link mechanism.

A wall portion 317 extending in the Z-axis direction is arranged between the positive electrode transport unit 31 and the laminating jig 52. The wall portion 317 is provided with a plurality of (six in this case) slits 318 through which the positive electrode 11 with a separator extruded by the extrusion unit 35 passes. The slits 318 are arranged at equal intervals in the Z-axis direction. In this embodiment, as an example, the upper portion of the slit 318 is an inclined surface that inclines downward from the positive electrode transport unit 31 side toward the laminating jig 52 side. Further, the lower portion of the slit 318 is an inclined surface that inclines upward from the positive electrode transport unit 31 side toward the laminating jig 52 side. As a result, the positive electrode 11 with a separator can be appropriately guided to the laminated member 523, and the opening portion of the slit 318 on the inlet side (positive electrode transport unit 31 side) can be enlarged. As a result, even if the height position of the positive electrode 11 with a separator extruded by the extrusion unit 35 is slightly displaced, the positive electrode 11 with a separator can be passed through the slit 318. The position of the drive portion 352 of the extrusion unit 35 is fixed relative to the wall portion 317.

The extrusion unit 36 simultaneously extrudes a plurality of (six in this case) negative electrodes 9 toward a plurality of (here, six upper and lower) laminated members 523, thereby simultaneously pushing the six negative electrodes 9 into the six-stage laminated member 523. Stack. The extrusion unit 36 has a pair of extrusion members 361 that push the six negative electrodes 9 together, and a drive unit 362 that moves the extrusion members 361 to the six-stage laminated member 523 side. The configuration of the drive unit 362 is the same as that of the drive unit 352 of the extrusion unit 35. The drive unit of the extrusion units 35 and 36 may have a cylinder or the like.

A wall portion 319 extending in the Z-axis direction is arranged between the negative electrode transfer unit 32 and the laminating jig 52. The wall portion 319 is provided with a plurality of (six in this case) slits 320 through which the negative electrode 9 extruded by the extrusion unit 36 passes. The height position of each slit 320 is the same as the height position of each slit 318. As an example in the present embodiment, the upper portion of the slit 320 is an inclined surface that inclines downward from the negative electrode transport unit 32 side toward the laminating jig 52 side. Further, the lower portion of the slit 320 is an inclined surface that inclines upward from the negative electrode transport unit 32 side toward the laminating jig 52 side. As a result, the negative electrode 9 can be appropriately guided to the laminated member 523, and the opening portion of the slit 320 on the inlet side (negative electrode transport unit 32 side) can be enlarged. As a result, even if the height position of the negative electrode 9 extruded by the extrusion unit 36 is slightly displaced, the negative electrode 9 can be passed through the slit 320. The position of the drive portion 362 of the extrusion unit 36 is fixed relative to the wall portion 319.

The stacking auxiliary unit 38 is a unit that assists in laminating the positive electrode 11 with a separator and the negative electrode 9, and specifically, enables simultaneous laminating (simultaneous extrusion) of the positive electrode 11 with a separator and the negative electrode 9. The stacking auxiliary unit 38 includes a partition plate 381, a partition plate 382, a positioning pusher 383, a positioning pusher 384, and a drive unit 385-387.

The partition plate 381 is a member that is arranged above the laminated member 523 and partitions the positive electrode 11 with a separator and the negative electrode 9 at the time of introduction. In the partition plate 381, the positive electrode 11 with a separator at the time of introduction is placed on the upper surface 381a, and the negative electrode 9 is guided to the lower surface 381b side. The partition plate 381 is arranged at substantially the same position as the positive electrode 11 with a separator and the negative electrode 9 at the time of introduction in the Z-axis direction.

The partition plate 381 is a plate-shaped member having a rectangular shape, and includes an end portion 381c and an end portion 381d facing in the X-axis direction (introduction direction). Of the end portions of such a partition plate 381, the end portion 381c on the side where the positive electrode 11 with a separator is introduced is inclined downward from the horizontal portion of the partition plate 381 toward the outside. As a result, the introduced positive electrode 11 with a separator rides on the upper surface 381a of the partition plate 381 along the inclined end portion 381c. Further, the end portion 381d on the side where the negative electrode 9 is introduced is inclined upward from the horizontal portion of the partition plate 381 toward the outside. As a result, the introduced negative electrode 9 is guided to the lower surface 381b side of the partition plate 381 along the inclined end portion 381d. The size of the partition plate 381 in the X-axis direction is not particularly limited, but the size may be set so as to overlap the tab 14b of the positive electrode 11 with a separator and the tab 16b of the negative electrode 9 when viewed from the Z-axis direction. By setting the partition plate 381 to a size capable of partitioning the tabs 14b and 16b in this way, it is possible to prevent the positive electrode 11 and the negative electrode 9 with a separator from interfering with each other between the tabs 14b and 16b. The partition plate 381 is connected to a drive unit 385 for advancing and retreating the partition plate 381 in the Y-axis direction.

The partition plate 382 is a member that is arranged above the laminated member 523 and below the partition plate 381, and the negative electrode 9 at the time of introduction is placed on the upper surface 382a. The partition plate 382 is arranged at substantially the same position as the positive electrode 11 with a separator and the negative electrode 9 at the time of introduction in the Z-axis direction, and is separated from the partition plate 381 at least below the thickness of the negative electrode 9.

The partition plate 382 is a plate-shaped member having a rectangular shape, and includes an end portion 382c and an end portion 382d facing each other in the X-axis direction. Of the ends of such a partition plate 382, the end 382c on the side where the positive electrode 11 with a separator is introduced extends in the horizontal direction without being inclined. Further, the end portion 382c is arranged closer to the negative electrode transport unit 32 than the end portion 381c of the partition plate 381. As a result, the end portion 382c of the partition plate 382 is prevented from interfering with the end portion 381c of the partition plate 381 that is inclined downward. Further, the end portion 382d on the side where the negative electrode 9 is introduced is inclined downward from the horizontal portion of the partition plate 382 toward the outside. As a result, the introduced negative electrode 9 is guided to the upper surface 382a of the partition plate 382 along the inclined end portion 382d. The partition plate 382 is connected to a drive unit 385 for advancing and retreating the partition plate 382 in the Y-axis direction.

The drive unit 385 drives the partition plates 381 and 382 in the Y-axis direction. Therefore, the drive unit 385 moves the partition plates 381 and 382 arranged above the laminated member 523 in the direction away from the laminating jig 52 in the Y-axis direction, thereby moving the partition plates 381 and 382 from the laminating member 523. Pull it out (see (b) in FIG. 5). Further, the drive unit 385 relocates the pulled out partition plates 381 and 382 toward the stacking jig 52 in the Y-axis direction, thereby arranging them again above the stacking member 523 (see (a) in FIG. 5). .. The partition plate 381 and the partition plate 382 may be driven by the same drive unit or may be driven by different drive units.

The positioning pusher 383 and the positioning pusher 384 are members for positioning the positive electrode 11 with a separator mounted on the partition plate 381 and the negative electrode 9 mounted on the partition plate 382 in the Y-axis direction. That is, the positioning pusher 383 and the positioning pusher 384 can position the positive electrode 11 with a separator and the negative electrode 9 in the Y-axis direction immediately before being laminated on the laminated member 523. Further, the positioning pushers 383 and 384 support the positive electrode 11 with a separator and the negative electrode 9 when the partition plates 381 and 382 are pulled out from the laminated member 523. Since the positioning pushers 383 and 384 are arranged on the side opposite to the wall portion 521 of the laminating jig 52, they are placed on the upper edge 11a of the positive electrode 11 with a separator and the partition plate 382 placed on the partition plate 381. It comes into contact with the upper edge 9a of the negative electrode 9.

The positioning pusher 383 is arranged closer to the positive electrode transport unit 31 than the partition plates 381 and 382 in the X-axis direction. Further, the positioning pusher 383 is arranged closer to the positive electrode transport unit 31 than the tab 14b of the positive electrode 11 with a separator mounted on the partition plate 381. Therefore, the positioning pusher 383 can push the portion of the upper edge 11a of the positive electrode 11 with a separator that is closer to the positive electrode transport unit 31 than the tab 14b (see (b) in FIG. 5). The positioning pusher 383 pushes the upper edge 11a so that the lower edge 11b of the positive electrode 11 with a separator comes into contact with the wall portion 521 (see FIG. 8).

The positioning pusher 384 is arranged on the negative electrode transfer unit 32 side of the partition plates 381 and 382 in the X-axis direction. Further, the positioning pusher 384 is arranged closer to the negative electrode transport unit 32 than the tab 16b of the negative electrode 9 placed on the partition plate 382. Therefore, the positioning pusher 384 can push the portion of the upper edge 9a of the negative electrode 9 on the negative electrode transport unit 32 side of the tab 16b (see (b) in FIG. 5). The positioning pusher 384 pushes the upper edge 9a so that the lower edge 9b of the negative electrode 9 comes into contact with the wall portion 521. The positioning pushers 383 and 384 have a rod-like shape extending in the Z-axis direction. Therefore, the positioning pushers 383 and 384 position the positive electrode 11 and the negative electrode 9 with separators in the multi-stage laminated member 523, respectively.

The positioning pusher 383 is connected to a drive unit 386 for advancing and retreating the positioning pusher 383 in the Y-axis direction. The positioning pusher 384 is connected to a drive unit 387 for moving the positioning pusher 384 forward and backward in the Y-axis direction. The drive units 386 and 387 drive the positioning pushers 383 and 384 in the Y-axis direction. Therefore, the drive units 386 and 387 come into contact with the positive electrode 11 with a separator and the negative electrode 9 to perform positioning in the Y-axis direction by moving the positioning pushers 383 and 384 toward the stacking jig 52 in the Y-axis direction. (See (b) in FIG. 5). Further, the drive units 386 and 387 move the positioning pushers 383 and 384 in contact with the positive electrode 11 with a separator and the negative electrode 9 so as to be separated from the laminating jig 52 in the Y-axis direction and return them to their original positions (FIG. 5). (A).

In the electrode laminating device 30B, the laminating auxiliary unit 38 further includes a driving unit 388 and a driving unit 389. The drive unit 388 advances and retreats the positioning pusher 383 in the X-axis direction. The drive unit 388 is connected to the drive unit 386. The drive unit 388 drives the positioning pusher 383 and the drive unit 386 in the X-axis direction. Therefore, the drive unit 388 arranges the positioning pusher 383 at a position where the positioning operation can be performed by moving the positioning pusher 383 and the drive unit 386 in the X-axis direction. Further, the drive unit 388 retracts the positioning pusher 383 and the drive unit 386 by moving the positioning pusher 383 and the drive unit 386 in the X-axis direction so as not to hinder the movement of the stacking jig 52.

The drive unit 389 advances and retreats the partition plates 381 and 382 and the positioning pusher 384 in the X-axis direction. The drive unit 389 is connected to the drive unit 385 and the drive unit 387. The drive unit 389 drives the partition plates 381, 382, the positioning pusher 384, and the drive units 385, 387 in the X-axis direction. Therefore, the drive unit 389 arranges the partition plates 381 and 382 at positions where the partition plates can be operated and positions them by moving the partition plates 381, 382, the positioning pusher 384, and the drive units 385 and 387 in the X-axis direction. The pusher 384 is arranged at a position where the positioning operation is possible. Further, the drive unit 389 moves the partition plates 381, 382, the positioning pusher 384, and the drive units 385, 387 in the X-axis direction so as not to hinder the movement of the stacking jig 52, so that the partition plates 381, 382 do not interfere with the movement. , Positioning pusher 384, and drive units 385 and 387 are retracted. In the electrode laminating device 30A, the laminating auxiliary unit 38 does not include a driving unit 388 and a driving unit 389.

The controller 39 is composed of a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), an input / output interface, and the like. The controller 39 controls each part of the electrode laminating device 30B. Further, the controller 39 is connected to the electrode supply sensors 301 and 302 and the stacking position sensors 303 and 304, and can receive detection signals from these sensors. The controller 39 determines the control content based on the detection signal from each sensor and the program stored in the ROM, and controls each part of the electrode stacking device 30B.

The electrode supply sensor 301 is arranged near the end of the positive electrode supply conveyor 33 on the positive electrode transport unit 31 side, and detects the presence or absence of the claw portion 33a or the positive electrode 11 with a separator. The electrode supply sensor 301 periodically transmits a detection signal indicating the presence / absence of the claw portion 33a or the positive electrode 11 with a separator to the controller 39.

The electrode supply sensor 302 is arranged near the end of the negative electrode supply conveyor 34 on the negative electrode transfer unit 32 side, and detects the presence or absence of the claw portion 34a or the negative electrode 9. The electrode supply sensor 302 periodically transmits a detection signal indicating the presence or absence of the claw portion 34a or the negative electrode 9 to the controller 39.

In the stacking position sensor 303, the positive electrode 11 with a separator supported by the support member 312 has a predetermined stacking position (for example, a position corresponding between the stacking member 523 at the bottom of the stacking jig 52 and the sandwiching member 524). Is detected. The stacking position sensor 303 is independent of the vertical movement of the circulation member 311, and its height position is fixed by being attached to, for example, a circulation frame. When the stacking position sensor 303 detects that the positive electrode 11 with a separator supported by the support member 312 has reached the stacking position, it transmits a detection signal indicating that fact to the controller 39.

The stacking position sensor 304 reaches a predetermined stacking position (for example, a position corresponding between the stacking member 523 at the bottom of the stacking jig 52 and the sandwiching member 524) of the negative electrode 9 supported by the support member 322. Detect what you have done. The stacking position sensor 304 is independent of the vertical movement of the circulation member 321. For example, the height position of the stacking position sensor 304 is fixed by being attached to the circulation frame. When the stacking position sensor 304 detects that the negative electrode 9 supported by the support member 322 has reached the stacking position, it transmits a detection signal indicating that fact to the controller 39.

Subsequently, the transfer device 50 will be described with reference to FIGS. 3 and 7 to 11. FIG. 7 is a side view showing the transport device shown in FIG. FIG. 8 is a side view showing the laminating jig shown in FIG. FIG. 9 is a plan view showing the laminating jig shown in FIG. 10 (a) is a perspective view showing the sandwiching member shown in FIG. 8, and FIG. 10 (b) is a perspective view showing the laminated member shown in FIG. FIG. 11 is a perspective view showing the laminating jig shown in FIG. FIG. 12A is a plan view showing the pallet shown in FIG. 3, and FIG. 12B is a side view showing the pallet shown in FIG.

The transport device 50 is a device that transports the stacking jig 52 on which the electrode laminate 21 is formed toward a subsequent process. The transport device 50 includes a transport mechanism 51, a plurality of (here, two) laminating jigs 52, a carry-out conveyor 53, and a controller 54.

The transport mechanism 51 is a mechanism for transporting the laminating jig 52. In the present embodiment, the transport mechanism 51 transports the stacking jig 52 along the Y-axis direction (horizontal direction) from the stacking position P1 where the positive electrode 11 with a separator and the negative electrode 9 are laminated by the electrode stacking devices 30A and 30B. .. The stacking position P1 is a position where the electrode laminating devices 30A and 30B can introduce the positive electrode 11 with a separator and the negative electrode 9 into the laminating jig 52, and here, the positive electrode transport unit 31 and the negative electrode transport unit 32. The position between.

The transport mechanism 51 includes a rotating body 511, a plurality of (here, two) arm portions 512, a plurality of (here, two) arm portions 513, and a drive unit 514 to 516. The rotating body 511 is a columnar member. The rotating body 511 is configured to be rotatable around a central axis 511a extending in the Z-axis direction. The arm portion 512 extends in the horizontal direction from the outer peripheral surface of the rotating body 511. The arm portion 512 is configured to be able to advance and retreat with respect to the outer peripheral surface of the rotating body 511. The arm portion 512 rotates around the central axis 511a together with the rotating body 511. The two arm portions 512 rotatably support the laminating jig 52. The tip of one arm portion 512 is connected to the upper end of the rotating shaft 52a of the laminating jig 52, and the tip of the other arm portion 512 is connected to the lower end of the rotating shaft 52a of the laminating jig 52. The rotation shaft 52a penetrates the wall portion 521 along the Z-axis direction. Further, the arm portion 512 is configured to be movable in the Z-axis direction.

The arm portion 513 extends in the horizontal direction from the outer peripheral surface of the rotating body 511. The arm portion 513 extends in the direction opposite to the arm portion 512 with the rotating body 511 interposed therebetween. The arm portion 513 is configured to be able to advance and retreat with respect to the outer peripheral surface of the rotating body 511. The arm portion 513 rotates around the central axis 511a together with the rotating body 511. The two arm portions 513 rotatably support the laminating jig 52. The tip of one arm portion 513 is connected to the upper end of the rotating shaft 52a of the laminating jig 52, and the tip of the other arm portion 513 is connected to the lower end of the rotating shaft 52a of the laminating jig 52. Further, the arm portion 513 is configured to be movable in the Z-axis direction.

The drive unit 514 rotates the rotating body 511 around the central axis 511a. The drive unit 514 is, for example, a motor. The drive unit 515 reciprocates the arm unit 512 in the horizontal direction. The drive unit 515 is, for example, a cylinder. The drive unit 516 reciprocates the arm unit 513 in the horizontal direction. The drive unit 516 is, for example, a cylinder.

The laminating jig 52 is a unit that holds the electrode laminating body 21 formed by the electrode laminating devices 30A and 30B. The tab 14b of the positive electrode 11 with a separator introduced by the electrode laminating device 30A and the tab 14b of the positive electrode 11 with a separator introduced by the electrode laminating device 30B project in opposite directions. Similarly, the tab 16b of the negative electrode 9 introduced by the electrode laminating device 30A and the tab 16b of the negative electrode 9 introduced by the electrode laminating device 30B project in opposite directions. The laminating jig 52 has a rotating shaft 52a extending along the Z-axis direction, and is configured to be rotatable around the rotating shaft 52a. The laminating jig 52 includes a laminating portion 520A (first laminating portion), a laminating portion 520B (second laminating portion), and a wall portion 521.

The wall portion 521 is a plate-shaped member that extends along the Z-axis direction and extends along a plane that intersects (orthogonally) in the Y-axis direction. The wall portion 521 separates the laminated portion 520A and the laminated portion 520B. The wall portion 521 is formed with a plurality of screw holes (not shown) for fixing the laminated member 523 to the wall portion 521.

The laminated portion 520A holds the electrode laminated body 21 formed by the electrode laminating device 30A. The laminated portion 520B holds the electrode laminated body 21 formed by the electrode laminating device 30B. The laminated portion 520A and the laminated portion 520B are integrated with each other via the wall portion 521. The laminated portions 520A and 520B include a plurality of laminated members 523, a plurality of sandwiching members 524, and a plurality of elastic members 525.

A positive electrode 11 with a separator and a negative electrode 9 are alternately laminated along the Z-axis direction on each of the plurality of laminated members 523. The plurality of laminated members 523 are arranged along the Z-axis direction on both sides of the wall portion 521 in the Y-axis direction. Each of the plurality of laminated members 523 is fixed to the wall portion 521. The laminated member 523 is an L-shaped plate when viewed from the X-axis direction by a flat plate-shaped fixing portion 523c used for fixing the laminated member 523 and a flat plate-shaped laminated portion 523d used for laminating the positive electrode 11 with a separator and the negative electrode 9. It is formed in a shape. The fixed portion 523c and the laminated portion 523d are integrally formed.

The fixed portion 523c has a plate shape extending along a plane intersecting (orthogonal) in the Y-axis direction. The fixed portion 523c has a quadrangular shape when viewed from the Y-axis direction. The width of the fixed portion 523c in the X-axis direction is substantially the same as the width of the wall portion 521 in the X-axis direction. Convex portions 523e that engage with the sandwiching member 524 are formed on both side surfaces of the fixing portion 523c in the X-axis direction. The convex portion 523e extends along the Z-axis direction. The fixing portion 523c is formed with a plurality of screw holes 523f for fixing the laminated member 523 to the wall portion 521. The plurality of screw holes 523f correspond to the plurality of screw holes of the wall portion 521. The laminated member 523 is fixed to the wall portion 521 by screws or the like via, for example, a screw hole and a screw hole 523f of the wall portion 521. The laminated member 523 is fixed to the wall portion 521 at the same interval in the Z-axis direction.

The laminated portion 523d has a plate shape extending along a plane intersecting (orthogonal) in the Z-axis direction. The laminated portion 523d has a quadrangular shape when viewed from the Z-axis direction. Notches 523g (first notches) penetrating the laminated portion 523d along the Z-axis direction are formed on both edges of the laminated portion 523d in the X-axis direction. That is, a notch 523g that penetrates the laminated member 523 along the Z-axis direction is formed on the outer edge of the laminated member 523. Further, notches 523h that penetrate the laminated portion 523d along the Z-axis direction are formed on both sides of the fixed portion 523c at the edge portion of the laminated portion 523d on the fixed portion 523c side in the X-axis direction. The laminated portion 523d includes an upper surface 523a on which the positive electrode 11 with a separator and the negative electrode 9 are laminated, and a lower surface 523b on the opposite side of the upper surface 523a. The upper surface 523a and the lower surface 523b intersect (orthogonally) in the Z-axis direction.

The sandwiching member 524 is a member for sandwiching the electrode laminated body 21 formed on the laminated member 523 along the Z-axis direction. The plurality of sandwiching members 524 are arranged along the Z-axis direction on both sides of the wall portion 521 in the Y-axis direction. Each of the plurality of sandwiching members 524 is connected to a corresponding drive unit 527. The plurality of sandwiching members 524 can move (slide) independently of each other along the Z-axis direction. The sandwiching member 524 is formed in an L-shaped plate shape when viewed from the X-axis direction by a pair of flat plate-shaped extending portions 524c extending along the Z-axis direction and a sandwiching portion 524d used for sandwiching the electrode laminate 21. ing. The extending portion 524c and the sandwiching portion 524d are integrally formed.

The extending portion 524c has a plate shape extending along a plane intersecting (orthogonal) in the Y-axis direction. The extending portion 524c is arranged on both sides of the fixing portion 523c in the X-axis direction. The extending portions 524c are arranged side by side along the X-axis direction. That is, the extending portion 524c overlaps the fixed portion 523c when viewed from the X-axis direction. A concave portion 524e that engages with the convex portion 523e of the laminated member 523 is formed on the inner side surface of the extending portion 524c in the X-axis direction. The recess 524e extends along the Z-axis direction over the entire extending portion 524c. The extending portion 524c is formed with a plurality of screw holes 524f for connecting the holding member 524 to the driving portion 527. The sandwiching member 524 is fixed to the drive unit 527 via a screw hole 524f, for example, by a screw. When the sandwiching member 524 sandwiches the positive electrode 11 with a separator and the negative electrode 9 (electrode laminated body 21) laminated on the laminated member 523, the extending portions 524c of the sandwiching members 524 adjacent to each other along the Z-axis direction. Are separated from each other.

The sandwiching portion 524d has a plate shape extending along a plane intersecting (orthogonal) in the Z-axis direction. The sandwiching portion 524d has a quadrangular shape when viewed from the Z-axis direction. Notches 524 g (second notches) penetrating the sandwiched portion 524d along the Z-axis direction are formed on both edges of the sandwiched portion 524d in the X-axis direction. That is, a notch 524 g that penetrates the sandwiching member 524 along the Z-axis direction is formed on the outer edge of the sandwiching member 524. The notch 523 g and the notch 524 g overlap each other along the Z-axis direction. Here, as an example, the entire notch 523 g is included in the notch 524 g when viewed from the Z-axis direction. The sandwiching portion 524d includes a lower surface 524a for sandwiching the electrode laminate 21 with the upper surface 523a of the laminated portion 523d, and an upper surface 524b on the opposite side of the lower surface 524a. The lower surface 524a and the upper surface 524b intersect (orthogonally) in the Z-axis direction.

The laminated member 523 and the sandwiching member 524 are alternately arranged so as to face each other along the Z-axis direction. As a result, in the upper laminated member 523 of the pair of laminated members 523 adjacent to each other along the Z-axis direction and the sandwiching member 524 between the pair of laminated members 523, the lower surface 523b and the upper surface 524b face each other. Further, in the upper holding member 524 of the pair of holding members 524 adjacent to each other along the Z-axis direction and the laminated member 523 between the pair of holding members 524, the upper surface 523a and the lower surface 524a face each other. In the upper sandwiching member 524 of the pair of sandwiching members 524 adjacent to each other along the Z-axis direction and the laminated member 523 between the pair of sandwiching members 524, the lower surface 524a of the sandwiching member 524 and the laminated member 523 are formed. The distance D1 from the uppermost surface of the electrode laminate 21 is shorter than the distance D2 between the bottom surface of the extending portion 524c of the holding member 524 and the upper surface 524b of another holding member 524 adjacent to the holding member 524. As a result, even if the thickness of the electrode laminated body 21 varies among the plurality of sets of laminated member 523 and the sandwiching member 524, the electrode laminated body 21 is surely formed without interference between the extending portions 524c. It is sandwiched between.

The laminated member 523 and the holding member 524 are engaged with each other by a convex portion 523e and a concave portion 524e extending along the Z-axis direction. Therefore, the laminated member 523 and the sandwiching member 524 can slide with each other along the Z-axis direction. By moving each holding member 524 in the Z-axis direction by the plurality of driving units 527, the laminated member 523 and the holding member 524 slide with each other in the Z-axis direction. As a result, the distance between the upper surface 523a and the lower surface 524a is expanded, or the electrode laminate 21 formed on the laminated member 523 is sandwiched between the upper surface 523a and the lower surface 524a.

The elastic member 525 is elastically deformed as the laminated member 523 and the holding member 524 slide. As a result, the elastic member 525 applies an elastic force to the holding member 524 so that the holding member 524 holds the electrode laminated body 21 formed on the laminated member 523 with the laminated member 523. That is, the sandwiching member 524 sandwiches the electrode laminate 21 by the elastic force of the elastic member 525. The elastic member 525 is arranged between the lower surface 523b and the upper surface 524b facing each other. The elastic member 525 has one end attached to the laminated member 523 and the other end attached to the sandwiching member 524.

The other end of the elastic member 525 is arranged in the hole 524h formed in the upper surface 524b. That is, the other end of the elastic member 525 is attached to the upper surface 524b. Further, one end of the elastic member 525 is arranged in a hole (not shown) formed in the lower surface 523b. That is, one end of the elastic member 525 is attached to the lower surface 523b. Thereby, the position of the elastic member 525 in the horizontal direction is determined. The hole 524h does not penetrate the sandwiching portion 524d. Further, the hole formed in the lower surface 523b does not penetrate the laminated portion 523d. Here, the elastic member 525 is, for example, a coil spring. However, the elastic member 525 may be, for example, rubber or the like. Four elastic members 525 are arranged between a plurality of sets of lower surface 523b and upper surface 524b facing each other. The elastic member 525 may be provided over the entire area between the lower surface 523b and the upper surface 524b facing each other. Further, the elastic member 525 may not be provided.

The carry-out conveyor 53 conveys the electrode laminate 21 to a subsequent process on the production line. In the present embodiment, the carry-out conveyor 53 is a belt conveyor or a roller conveyor, and conveys a plurality of guided pallets 60.

As shown in FIGS. 12A and 12B, the guided pallet 60 includes a mounting table 61 and a plurality of guide members 62. The mounting table 61 is a rectangular plate-shaped member. The electrode laminate 21 is placed on the upper surface 61a of the mounting table 61. The plurality of guide members 62 are members for positioning the electrode laminate 21, and have a cylindrical shape. Each of the plurality of guide members 62 is erected on the upper surface 61a of the mounting table 61, and is arranged along the outer peripheral edge of the electrode laminate 21 mounted on the upper surface 61a. The electrode laminate 21 is placed in the region surrounded by the guide member 62, and is carried out in a post-process in a positioned state.

The controller 54 is composed of a CPU, RAM, ROM, an input / output interface, and the like. The controller 54 controls each part of the transport device 50. The controller 54 determines the control content based on the program stored in the ROM, and controls each part of the transfer device 50.

Next, the operation of the manufacturing equipment 20 will be described with reference to FIGS. 13 to 16. 13 to 16 are diagrams for explaining the operation of the manufacturing equipment shown in FIG.

First, as shown in FIG. 13, an empty laminating jig 52 is arranged at the laminating position P1 at the start of laminating. Specifically, the rotating body 511 rotates so that the empty laminating jig 52 supported by the arm portion 512 is arranged on the electrode laminating devices 30A and 30B, and the arm portion 512 separates from the rotating body 511. Extend in the direction. Then, by moving the arm portion 512 in the Z-axis direction, the laminating member 523 is arranged at a height at which the positive electrode 11 with a separator and the negative electrode 9 introduced by the extrusion units 35 and 36 can be introduced, and the laminating jig The position of 52 is fixed. As a result, the empty laminating jig 52 is arranged at the laminating position P1. Then, the holding member 524 is moved upward, and the distance between the upper surface 523a and the lower surface 524a is increased. On the other hand, the distance between the lower surface 523b and the upper surface 524b is reduced, and the elastic member 525 is elastically deformed so as to be compressed.

Further, the partition plates 381 and 382 of the electrode laminating device 30B are arranged at positions where the partitioning operation is possible, and the positioning pushers 383 and 384 of the electrode laminating device 30B are arranged at positions where the positioning operation is possible.

Subsequently, a laminating operation is performed. That is, the electrode stacking body 21 is formed by the electrode laminating device 30A on the laminating portion 520A of the laminating jig 52 supported by the arm portion 512, and the electrodes are formed on the laminating portion 520B of the laminating jig 52 supported by the arm portion 512. The electrode laminate 21 is formed by the laminate device 30B. Specifically, the extrusion units 35 and 36 make the upper surface 523a and the lower surface 523a so that the plurality of separator-equipped positive electrodes 11 and 9 conveyed by the positive electrode transfer unit 31 and the negative electrode transfer unit 32 are alternately laminated on the upper surface 523a. Introduced between 524a. The arm portion 512 gradually lowers the wall portion 521 so that the laminated positive electrode 11 and the negative electrode 9 do not hinder the introduction of the new separator-equipped positive electrode 11 and the negative electrode 9, so that the laminated member 523 can be raised. Descend. At this time, the elastic member 525 is further compressed.

Subsequently, when the lamination of the positive electrode 11 with the separator and the negative electrode 9 is completed, the sandwiching member 524 is lowered until the lower surface 524a of the sandwiching member 524 comes into contact with the upper surface of the electrode laminate 21 formed on the laminated member 523. As a result, the electrode laminate 21 formed on the upper surface 523a of the laminated member 523 is sandwiched between the laminated member 523 and the sandwiching member 524 by the elastic force (restoring force) of the elastic member 525.

Subsequently, the transfer operation by the transfer device 50 is performed. The transport operation is an operation of arranging the laminating jig 52 on which the electrode laminated body 21 is formed at the carry-out position P2 and arranging the empty laminating jig 52 at the laminating position P1. The carry-out position P2 is a position where the electrode laminate 21 formed on the stacking jig 52 can be carried out to the carry-out conveyor 53, and here, it is a position adjacent to the carry-out conveyor 53. Specifically, first, as shown in FIG. 14, the laminating auxiliary unit 38 of the electrode laminating device 30B is retracted to a position that does not interfere with the transportation of the laminating jig 52. Then, the arm portion 512 contracts toward the rotating body 511, and the laminating jig 52 is moved from the laminating position P1 to the rotating body 511 side along the Y-axis direction. Subsequently, as shown in FIG. 15, the rotating body 511 rotates 180 degrees, the arm portion 512 is arranged on the carry-out conveyor 53 side, and the arm portion 513 is arranged on the electrode laminating devices 30A and 30B. At this time, the laminating jig 52 supported by the arm portion 512 is located at the carry-out position P2. Then, as the arm portion 513 extends in the direction away from the rotating body 511, the empty laminating jig 52 supported by the arm portion 513 is arranged at the laminating position P1.

Subsequently, a laminating operation and an unloading operation are performed. That is, the electrode laminate 21 is formed on the stacking jig 52 supported by the arm portion 513, and the electrode laminate 21 is carried out from the stacking jig 52 supported by the arm portion 512. Since the stacking operation is the same as described above, the unloading operation will be specifically described here.

First, the electrode laminates 21 formed on the laminate 520A are transferred to the carry-out conveyor 53 one by one. At this time, an extraction device such as a robot hand (not shown) grips the electrode laminate 21 through the notch 523 g of the laminated member 523 and the notch 524 g of the sandwiching member 524. After that, the holding member 524 holding the electrode laminated body 21 held by the take-out device is raised, and the holding of the electrode laminated body 21 between the laminated member 523 and the holding member 524 is eliminated. At this time, the other electrode laminated body 21 is sandwiched by the laminated member 523 and the sandwiching member 524. Then, the take-out device places the electrode laminated body 21 on the guided pallet 60 arranged on the mounting surface 53a of the carry-out conveyor 53 while grasping the electrode laminated body 21. Then, the take-out device similarly takes out the next electrode laminate 21 and transfers it to the carry-out conveyor 53 (guided pallet 60).

Then, when all the electrode laminated bodies 21 formed on the laminated portion 520A are transferred to the carry-out conveyor 53, the laminating jig 52 is rotated 180 degrees around the rotation shaft 52a as shown in FIG. Then, the electrode laminated body 21 formed in the laminated portion 520B is transferred to the carry-out conveyor 53. Compared with the electrode laminate 21 formed on the laminated portion 520A, the electrode laminated body 21 formed on the laminated portion 520B is transferred to the carry-out conveyor 53 (guided pallet 60) one by one. It is the same, but differs in that it is turned upside down (front and back) during the transfer. This is because the positions of the positive electrode tab 14b and the negative electrode tab 16b of the electrode laminated body 21 formed on the laminated portion 520A and the electrode laminated body 21 formed on the laminated portion 520B are reversed (X) immediately after the lamination. By becoming (opposite in the axial direction). After that, the transport operation, the stacking operation, and the unloading operation are repeated.

As described above, according to the transfer operation and the carry-out operation of the transfer device 50, the stacking jig 52 is conveyed from the stacking position P1 to the carry-out position P2 without releasing the fixing of the electrode laminate 21, and is conveyed from the stacking jig 52. The electrode laminate 21 is delivered to the take-out device and transferred to the carry-out conveyor 53. Therefore, the misalignment of the positive electrode 11 with a separator and the negative electrode 9 (electrode laminate 21) is suppressed.

As described above, in the transport device 50, the electrode laminating device 30A forms the electrode laminating body 21 on the laminating portion 520A of the laminating jig 52, and the electrode laminating device 30B forms the electrode laminated body on the laminating portion 520B of the laminating jig 52. 21 is formed. Then, the laminating jig 52 on which the electrode laminated body 21 is formed is conveyed to the subsequent process by the conveying mechanism 51. Since the laminating portion 520A and the laminating portion 520B are integrated, it is not necessary to provide a transport mechanism for each of the electrode laminating devices 30A and 30B, and the transport mechanism 51 is shared with the electrode laminating devices 30A and 30B. Can be done. As a result, the transfer device 50 can be miniaturized.

For example, when the laminating jig 52 is transported upward from the laminating position P1 in the vertical direction, foreign matter such as active material particles adhering to the electrode (negative electrode 9) may fall on the electrode laminating devices 30A and 30B. On the other hand, the transport mechanism 51 transports the stacking jig 52 from the stacking position P1 along the horizontal direction. Therefore, since the foreign matter falls on the floor surface, it is possible to suppress the foreign matter from falling on the electrode laminating devices 30A and 30B, and it is possible to reduce the possibility that the electrode laminated body 21 is defective.

The electrode laminated body 21 formed in the laminated portions 520A and 520B is sandwiched by the laminated member 523 and the sandwiching member 524 along the Z-axis direction. Therefore, it is possible to suppress the misalignment of the electrode laminate 21.

The laminating jig 52 is rotatable around a rotating shaft 52a along the Z-axis direction. Therefore, after carrying out the electrode laminated body 21 formed on one of the laminated portion 520A and the laminated portion 520B, the laminating jig 52 is rotated around the rotation shaft 52a to form the other of the laminated portion 520A and the laminated portion 520B. The formed electrode laminate 21 can be carried out. As a result, the electrode laminate 21 formed in the laminated portion 520A and the laminated portion 520B can be transported to the subsequent process using a common transport path. Therefore, it is not necessary to merge the transport routes, and the transport routes can be simplified.

The plurality of sandwiching members 524 can move independently of each other along the Z-axis direction. Therefore, when the electrode laminate 21 formed on the stacking jig 52 is taken out from the stacking jig 52, only the electrode laminate 21 to be taken out is sandwiched without releasing the sandwiching of the other electrode laminates 21. It can be released. Therefore, when the electrode laminates 21 formed on the stacking jig 52 are taken out one by one, it is possible to suppress the misalignment of the other electrode laminates 21.

The tab 14b of the positive electrode 11 with a separator introduced by the electrode laminating device 30A and the tab 14b of the positive electrode 11 with a separator introduced by the electrode laminating device 30B project in opposite directions. Further, the tab 16b of the negative electrode 9 introduced by the electrode laminating device 30A and the tab 16b of the negative electrode 9 introduced by the electrode laminating device 30B project in opposite directions. In the upstream process, when the electrodes (positive electrode 8 and negative electrode 9) are manufactured by so-called double striping, the electrodes can be laminated without changing the orientation of the manufactured electrodes. This makes it possible to simplify the transfer path of the electrodes.

(Second Embodiment)
Next, the transport device according to the second embodiment will be described with reference to FIGS. 17 and 18. FIG. 17 is a plan view showing a manufacturing facility including the transfer device according to the second embodiment. FIG. 18 is a side view showing the laminating jig shown in FIG.

As shown in FIG. 17, the manufacturing facility 20A according to the second embodiment is mainly different from the manufacturing facility 20 according to the first embodiment in that the transport device 50A is provided in place of the transport device 50. The transport device 50A is mainly different from the transport device 50 in that the stacking jig 52A is provided in place of the stacking jig 52 and the receiving jig 55 is further provided.

As shown in FIG. 18, the laminating jig 52A is mainly provided with the laminating jig 52 in a point further including a pair of wall portions 522A, a pair of wall portions 522B, and an elastic member 526, and a method of driving the holding member 524. Is different. The pair of wall portions 522A are arranged in the laminated portion 520A, and the pair of wall portions 522B are arranged in the laminated portion 520B. Each of the wall portions 522A and 522B is a plate-shaped member extending along the Z-axis direction. The pair of wall portions 522A are arranged so as to sandwich the wall portions 521 in the X-axis direction. The pair of wall portions 522B are arranged so as to sandwich the wall portions 521 in the X-axis direction. The wall portions 522A and 522B are formed with a plurality of screw holes for fixing the holding member 524 to the wall portions 522A and 522B. The pair of wall portions 522A are connected to a drive unit 528A that moves the pair of wall portions 522A in the Z-axis direction. The pair of wall portions 522B are connected to a drive unit 528B that moves the pair of wall portions 522B in the Z-axis direction.

The plurality of sandwiching members 524 of the laminated portion 520A are configured to be integrally movable along the Z-axis direction. Specifically, the holding member 524 is fixed to the wall portion 522A by, for example, a screw via the screw hole 524f and the screw hole of the wall portion 522A. In the laminated portion 520A, the sandwiching member 524 is fixed to the wall portion 522A at equal intervals in the Z-axis direction. That is, the plurality of sandwiching members 524 are integrated with each other by fixing their extending portions 524c to the wall portion 522A. The plurality of sandwiching members 524 are integrated with each other via their respective extending portions 524c. Therefore, in the laminated portion 520A, the plurality of sandwiching members 524 are integrally moved in the Z-axis direction by the driving portion 528A connected to the wall portion 522A.

The plurality of sandwiching members 524 of the laminated portion 520B are configured to be integrally movable along the Z-axis direction. Specifically, the holding member 524 is fixed to the wall portion 522B by, for example, a screw via the screw hole 524f and the screw hole of the wall portion 522B. In the laminated portion 520B, the sandwiching member 524 is fixed to the wall portion 522B at equal intervals in the Z-axis direction. That is, the plurality of sandwiching members 524 are integrated with each other by fixing their extending portions 524c to the wall portion 522B. The plurality of sandwiching members 524 are integrated with each other via their respective extending portions 524c. Therefore, in the laminated portion 520B, the plurality of sandwiching members 524 are integrally moved in the Z-axis direction by the drive portion 528B connected to the wall portion 522B.

The elastic member 526 is provided on the holding member 524 so as to come into contact with the upper surface of the electrode laminate 21 in the Z-axis direction. Specifically, the elastic member 526 is provided on each lower surface 524a. As the elastic member 526, for example, a sponge, rubber, or the like can be used.

The receiving jig 55 is a unit that receives the electrode laminated body 21 formed on the laminating jig 52. The receiving jig 55 includes a wall portion 551, a pair of side wall portions 552, and a plurality of grip portions 553.

The wall portion 551 is a plate-shaped member that extends along the Z-axis direction and extends along a plane that intersects (orthogonally) in the Y-axis direction. The wall portion 551 is configured to be rotatable around a central axis 55a extending in the Z-axis direction. The central axis 55a penetrates the wall portion 551 along the Z-axis direction. The wall portion 551 is connected to a drive unit (not shown) for rotating the wall portion 551. The wall portion 551 is sandwiched between a pair of side wall portions 552 in the X-axis direction. The side wall portion 552 is a plate-shaped member that extends along the Z-axis direction and extends along a plane that intersects (orthogonally) in the X-axis direction. The wall portion 551 is located near the center of the side wall portion 552 in the Y-axis direction.

The wall portion 551 separates the receiving portion 550A and the receiving portion 550B. The receiving unit 550A receives a plurality of electrode laminates 21 from the laminated unit 520A. The receiving unit 550B receives a plurality of electrode laminates 21 from the laminated unit 520B. The receiving unit 550A and the receiving unit 550B are integrated with each other via the wall portion 551. Each of the receiving portions 550A and 550B includes a plurality of (here, six) gripping portions 553 for gripping the electrode laminate 21.

The plurality of grip portions 553 are arranged along the Z-axis direction on both sides of the wall portion 551 in the Y-axis direction. The grip portion 553 is provided corresponding to the set of the laminated member 523 and the sandwiching member 524 that sandwich the electrode laminate 21. Each of the plurality of grip portions 553 is connected to a corresponding drive portion (not shown) and is configured to be able to operate independently of each other. Each grip portion 553 includes a grip member 553a provided on one side wall portion 552 and a grip member 553b provided on the other side wall portion 552. The gripping members 553a and 553b are provided on the surfaces of the pair of side wall portions 552 facing each other, and are arranged along the opposite directions of the pair of side wall portions 552. The gripping members 553a and 553b are configured to be able to grip the electrode laminate 21 along the Z-axis direction.

By operating each of the gripping portions 553 individually by the plurality of driving units, the gripping portion 553 grips the electrode laminated body 21 or releases the gripping of the electrode laminated body 21. The grip portion 553 grips the electrode laminate 21 via the notch 523 g and the notch 524 g. That is, the grip member 553a has a shape corresponding to one notch 523 g and a notch 524 g, and the grip member 553b has a shape corresponding to the other notch 523 g and the notch 524 g.

Next, refer to (a) to (c) of FIG. 19, (a) and (b) of FIG. 20, (a) and (b) of FIG. 21, and (a) and (b) of FIG. 22. The operation of the manufacturing equipment 20A will be described. 19 (a) to (c), 20 (a) and (b), 21 (a) and (b), and 22 (a) and (b) are shown in FIG. It is a figure for demonstrating the operation of the manufacturing equipment. The operation of the manufacturing equipment 20A is mainly different from the operation of the manufacturing equipment 20 in the carrying-out operation. In the unloading operation of the manufacturing equipment 20A, the electrode laminate 21 is delivered from the stacking jig 52A to the receiving jig 55, and the electrode laminate 21 is transferred from the receiving jig 55 to the unloading conveyor 53 (guided pallet 60). Hereinafter, a specific description will be given. The laminating jig 52A supported by the arm portion 512 is arranged on the carry-out conveyor 53 side, and the laminating jig 52A supported by the arm portion 513 is arranged on the electrode laminating devices 30A and 30B. do.

First, the electrode laminate 21 formed on the laminated portion 520A is collectively delivered to the receiving jig 55 (receiving portion 550A). More specifically, the gripping members 553a and 553b of the receiving unit 550A operate so that the laminated member 523 and the sandwiching member 524 holding the electrode laminate 21 can be inserted. The spacing in the Z-axis direction is increased. Then, as shown in FIG. 19A, the arm portion 512 extends from the rotating body 511 toward the receiving jig 55, and the laminated member 523 and the sandwiching member 524 sandwiching the electrode laminated body 21 are gripping members. It is inserted between 553a and 553b.

Subsequently, as shown in FIG. 19B, the gripping portion 553 operates to grip the electrode laminate 21 through the notch 523 g of the laminated member 523 and the notch 524 g of the sandwiching member 524. As a result, all of the electrode laminated bodies 21 formed on the laminated portion 520A are in a state of being gripped by the gripping portions 553, respectively. Then, the sandwiching member 524 of the laminated portion 520A is raised, and the sandwiching of the electrode laminated body 21 between the laminated member 523 and the sandwiching member 524 is eliminated. At this time, the electrode laminated body 21 of the laminated portion 520B is sandwiched by the laminated member 523 and the sandwiching member 524. Then, as shown in FIG. 19C, the arm portion 512 contracts toward the rotating body 511, and the laminating portion 520A of the laminating jig 52A separates from the receiving portion 550A in the Y-axis direction. In this way, all of the electrode laminates 21 formed in the laminate 520A are delivered from the stacking jig 52A to the receiving jig 55.

Subsequently, as shown in FIG. 20A, the laminating jig 52A supported by the arm portion 512 rotates 180 degrees around the rotation shaft 52a. As a result, the laminated portion 520B is located on the receiving jig 55 side. Further, the receiving jig 55 rotates 180 degrees around the central axis 55a. As a result, the receiving portion 550A holding the electrode laminated body 21 is located on the carry-out conveyor 53 side, and the empty receiving portion 550B is located on the laminating jig 52A side.

Subsequently, as shown in (b) of FIG. 20 and (a) of FIG. 21, the electrode laminated body 21 formed in the laminated portion 520B is collectively delivered to the receiving jig 55 (receiving portion 550B). .. This delivery operation is the same as the delivery of the electrode laminate 21 formed on the laminated portion 520A. At this time, the electrode laminates 21 held by the receiving unit 550A are transferred to the unloading conveyor 53 one by one. The take-out device 56 grips the electrode laminate 21 through a portion that is not gripped by the grip portion 553. In the present embodiment, the take-out device 56 extends the arm 56a so as to straddle the carry-out conveyor 53, and grips the electrode laminate 21 by the robot hand 56b. After that, the gripping portion 553 gripping the electrode laminated body 21 gripped by the take-out device 56 operates, and the gripping of the electrode laminated body 21 by the gripping portion 553 is eliminated. At this time, the other electrode laminate 21 is gripped by the grip portion 553. Then, the take-out device 56 places the electrode laminated body 21 on the guided pallet 60 arranged on the mounting surface 53a of the carry-out conveyor 53 while holding the electrode laminated body 21. Then, the take-out device 56 similarly takes out the next electrode laminate 21 and transfers it to the carry-out conveyor 53 (guided pallet 60).

Then, as shown in FIG. 21 (b), when all the electrode laminates 21 gripped by the receiving unit 550A are transferred to the carry-out conveyor 53 (guided pallet 60), FIG. 22 (a) As shown in, the receiving jig 55 is rotated 180 degrees around the central axis 55a. Then, as shown in FIG. 22 (b), the electrode laminates 21 held by the receiving unit 550B are transferred to the unloading conveyor 53 one by one. At this time, the take-out device 56 flips the electrode laminate 21 upside down (that is, rotates 180 degrees around the rotation axis along the Y-axis direction) while holding the electrode laminate 21, and places the carry-out conveyor 53 on it. The electrode laminate 21 is placed on the guided pallet 60 arranged on the placement surface 53a.

In this way, according to the transport device 50A, the stacking jig 52 is transported from the stacking position P1 to the delivery position P3 without being released from the electrode laminate 21, and is received from the stacking jig 52 to the receiving jig 55. It is handed over and transferred to the carry-out conveyor 53. Therefore, the misalignment of the positive electrode 11 with a separator and the negative electrode 9 (electrode laminate 21) is suppressed.

The above transfer device 50A also produces the same effect as that of the transfer device 50.

In order to allow the plurality of sandwiching members 524 to move independently of each other in the Z-axis direction, the stacking jig 52 may become large, for example, a drive unit is individually provided for each of the sandwiching members 524. Then, the drive unit or the like of the transport mechanism 51 may become large depending on the weight or the like of the stacking jig 52. On the other hand, in the transport device 50A, by making the plurality of holding members 524 of the stacking jig 52A integrally movable along the Z-axis direction, for example, the drive unit can be shared, and the stacking cure can be performed. The jig 52A can be miniaturized. This makes it possible to further reduce the size of the transport mechanism 51. On the other hand, since the plurality of gripping portions 553 of the receiving jig 55 can operate independently of each other, when the electrode laminated body 21 is taken out from the receiving jig 55, the gripping of the other electrode laminated body 21 is released. Instead, only the gripping of the electrode laminate 21 to be taken out can be released. Therefore, when the electrode laminates 21 are taken out one by one from the receiving jig 55, it is possible to suppress the misalignment of the other electrode laminates 21.

The notch 523g formed on the outer edge of the laminated member 523 and the notch 524g formed on the outer edge of the sandwiching member 524 overlap each other along the Z-axis direction. Therefore, when the electrode laminate 21 formed on the laminate jig 52A is delivered to the receiving jig 55, the grip portion is held while the electrode laminate 21 is being sandwiched between the laminate member 523 and the sandwich member 524. The 553 can grip the electrode laminate 21 through the notch 523 g of the laminated member 523 and the notch 524 g of the sandwiching member 524. That is, when the electrode laminate 21 is delivered, it is not necessary to release the sandwiching of the electrode laminate 21 before the electrode laminate 21 is gripped by the grip portion 553. This makes it possible to suppress the misalignment of the electrode laminate 21.

Although the first embodiment and the second embodiment of the present invention have been described above, the present invention is not limited to the above embodiment. For example, the transport mechanism 51 may transport the stacking jig 52 from the stacking position P1 in the Z-axis direction.

(Third Embodiment)
The transfer device according to the third embodiment will be described with reference to FIGS. 23 and 24. FIG. 23 is a plan view showing a manufacturing facility including the transfer device according to the third embodiment. FIG. 24 is a side view (including a partial cross section) showing the transport device shown in FIG. 23.

As shown in FIGS. 23 and 24, the manufacturing equipment 20B according to the third embodiment includes a transfer device 50B instead of the transfer device 50, and the stacking auxiliary unit 38 of the electrode stacking device 30B has a drive unit 388 and a drive unit 388. It is mainly different from the manufacturing equipment 20 in that it does not have a drive unit 389.

The transfer device 50B is mainly different from the transfer device 50 in that the transfer mechanism 51B is provided in place of the transfer mechanism 51. The transport mechanism 51B transports the stacking jig 52 from the stacking position P1 along the Z-axis direction (vertical direction). The transport mechanism 51B transports the stacking jig 52 along the Z-axis direction, and then transports the stacking jig 52 along the Y-axis direction. The transport mechanism 51B cyclically moves the stacking jig 52 in the order of the stacking position P1, the carry-out position P2, and the standby position P4. The standby position P4 is a position on the opposite side of the electrode stacking devices 30A and 30B from the carry-out position P2 in a plan view. Here, the carry-out position P2 and the standby position P4 are higher than the stacking position P1 and the stacking auxiliary unit 38 in the Z-axis direction.

The transport mechanism 51B includes an elevating mechanism 71A (first elevating mechanism), an elevating mechanism 71B (second elevating mechanism), a moving mechanism 72A (first moving mechanism), and a moving mechanism 72B (second moving mechanism).

The moving mechanism 72A is a mechanism capable of moving the elevating mechanism 71A along the horizontal direction (here, the Y-axis direction). The moving mechanism 72A is provided at a position higher than the positive electrode transport unit 31 and the negative electrode transport unit 32 in the Z-axis direction. The moving mechanism 72A includes a rail 721A and a slider 722A. The rail 721A extends from the carry-out position P2 to the standby position P4 along the Y-axis direction. The slider 722A is a member that is movably held by the rail 721A along the Y-axis direction. In the moving mechanism 72A, for example, a rack is provided on the upper surface of the rail 721A, the pinion provided on the slider 722A is meshed with the rack, and the drive unit provided on the slider 722A rotationally drives the pinion, thereby causing the slider 722A to rotate. It moves along rail 721A. When the slider 722A moves along the rail 721A, the moving mechanism 72A moves the elevating mechanism 71A in the Y-axis direction.

The moving mechanism 72B is a mechanism capable of moving the elevating mechanism 71B along the horizontal direction (here, the Y-axis direction). The moving mechanism 72B is provided at a position higher than the positive electrode transport unit 31 and the negative electrode transport unit 32 in the Z-axis direction. The moving mechanism 72B includes a rail 721B and a slider 722B. The rail 721B extends from the carry-out position P2 to the standby position P4 along the Y-axis direction. Since the moving mechanism 72B has the same configuration as the moving mechanism 72A except that the elevating cylinder 711B is provided on the lower surface of the slider 722B, detailed description thereof will be omitted.

The moving mechanism 72A and the moving mechanism 72B are arranged in parallel in the X-axis direction. Specifically, the moving mechanism 72A and the moving mechanism 72B are provided so as to sandwich the stacking position P1, the carry-out position P2, and the standby position P4 of the stacking jig 52 (when viewed from the Z-axis direction) in a plan view. The rail 721A and the rail 721B are arranged substantially parallel to each other, and are provided so as to sandwich the stacking position P1, the carry-out position P2, and the standby position P4 of the stacking jig 52 in a plan view. The moving mechanism 72A is provided on the negative electrode transport unit 32 side, and the moving mechanism 72B is provided on the positive electrode transport unit 31 side.

The elevating mechanism 71A is a mechanism capable of elevating the laminating jig 52 along the Z-axis direction. The elevating mechanism 71A supports the laminating jig 52 and is held by the moving mechanism 72A so as to be movable along the Y-axis direction. The elevating mechanism 71A includes an elevating cylinder 711A, an arm portion 712A, an extending portion 713A, and a rotating mechanism 714A.

The elevating cylinder 711A is a cylinder that reciprocates the arm portion 712A along the Z-axis direction. The elevating cylinder 711A is provided on the lower surface of the slider 722A. The arm portion 712A extends along the Z-axis direction from the lower surface of the elevating cylinder 711A. The lower end of the arm portion 712A is connected to one end of the extending portion 713A. The extending portion 713A extends along the X-axis direction from one end to which the lower end of the arm portion 712A is connected toward the rail 721B. The rotation mechanism 714A is provided on the upper surface of the extending portion 713A. A rotation shaft 52a extending through the extending portion 713A along the Z-axis direction is connected to the rotation mechanism 714A. The rotation mechanism 714A is, for example, a motor, and rotates the laminating jig 52 around the rotation shaft 52a. In this way, the elevating mechanism 71A rotatably supports the laminating jig 52 around the rotating shaft 52a.

As the arm portion 712A expands and contracts up and down along the Z-axis direction, the elevating mechanism 71A raises and lowers the stacking jig 52 along the Z-axis direction. In the elevating mechanism 71A, the stacking jig 52 may be elevated by the slider 722A elevating the arm portion 712A instead of expanding and contracting the arm portion 712A along the Z-axis direction by the elevating cylinder 711A. .. Specifically, the elevating mechanism 71A may not be provided with the elevating cylinder 711A, and the arm portion 712A may penetrate the slider 722A along the Z-axis direction and be held by the slider 722A so as to be able to elevate.

The elevating mechanism 71B is a mechanism capable of elevating the laminating jig 52 along the Z-axis direction. The elevating mechanism 71B supports the laminating jig 52 and is held by the moving mechanism 72B so as to be movable along the Y-axis direction. The elevating mechanism 71B includes an elevating cylinder 711B, an arm portion 712B, an extending portion 713B, and a rotating mechanism 714B.

The elevating cylinder 711B is a cylinder that reciprocates the arm portion 712B along the Z-axis direction. The elevating cylinder 711B is provided on the lower surface of the slider 722B. The arm portion 712B extends along the Z-axis direction from the lower surface of the elevating cylinder 711B. The lower end of the arm portion 712B is connected to one end of the extending portion 713B. The extending portion 713B extends along the X-axis direction from one end to which the lower end of the arm portion 712B is connected toward the rail 721A. The rotation mechanism 714B is provided on the upper surface of the extending portion 713B. A rotating shaft 52a of another laminating jig 52 extends along the Z-axis direction through the extending portion 713B, and a rotating shaft 52a penetrating the extending portion 713B is connected to the rotating mechanism 714B. The rotation mechanism 714B is, for example, a motor, and rotates the laminating jig 52 around the rotation shaft 52a. In this way, the elevating mechanism 71B rotatably supports the laminating jig 52 around the rotating shaft 52a.

As the arm portion 712B expands and contracts up and down along the Z-axis direction, the elevating mechanism 71B raises and lowers the stacking jig 52 along the Z-axis direction. In the elevating mechanism 71B, the stacking jig 52 may be elevated by the slider 722B elevating the arm portion 712B instead of expanding and contracting the arm portion 712B along the Z-axis direction by the elevating cylinder 711B. .. Specifically, the elevating mechanism 71B may not be provided with the elevating cylinder 711B, and the arm portion 712B may penetrate the slider 722B along the Z-axis direction and be held by the slider 722B so as to be able to elevate.

The laminating jig 52 supported by the elevating mechanism 71A is located between the carry-out position P2 and the standby position P4 along the Y-axis direction by the moving mechanism 72A in a state where the arm portion 712A is contracted toward the slider 722A. The movement route is moved. This movement path is located between the positive electrode transfer unit 31 and the negative electrode transfer unit 32 when viewed from the Z-axis direction. Similarly, the laminating jig 52 supported by the elevating mechanism 71B is moved along the moving path by the moving mechanism 72B in a state where the arm portion 712B is contracted toward the slider 722B.

The laminating jig 52 supported by the elevating mechanism 71A is elevated and lowered between the upper position of the laminating position P1 and the laminating position P1 in the transport path along the Z-axis direction by the elevating mechanism 71A. At this time, the arm portion 712A of the elevating mechanism 71A expands and contracts along the Z-axis direction at a position sandwiched between the negative electrode transport unit 32 of the electrode stacking device 30A and the negative electrode transport unit 32 of the electrode stacking device 30B when viewed from the Z-axis direction. .. Similarly, the stacking jig 52 supported by the elevating mechanism 71B is moved up and down between the upper position of the stacking position P1 and the stacking position P1 in the transport path along the Z-axis direction by the elevating mechanism 71B. At this time, the arm portion 712B of the elevating mechanism 71B expands and contracts along the Z-axis direction at a position sandwiched between the positive electrode transport unit 31 of the electrode stacking device 30A and the positive electrode transport unit 31 of the electrode stacking device 30B when viewed from the Z-axis direction. ..

When the laminating jig 52 supported by the elevating mechanism 71A is located at the laminating position P1, the upper end of the extending portion 713A (rotating mechanism 714A) is higher than the lower end of the laminating jig 52 that moves the moving path. It is located below. Therefore, the elevating mechanism 71B supporting the laminating jig 52 can move the moving path without interfering with the elevating mechanism 71A. Similarly, when the laminating jig 52 supported by the elevating mechanism 71B is located at the laminating position P1, the elevating mechanism 71A supporting the laminating jig 52 moves without interfering with the elevating mechanism 71B. Can be moved.

Next, the operation of the manufacturing equipment 20B will be described with reference to FIGS. 25 (a) and 25 (b) and 26 (a) and 26 (b). 25 (a) and 25 (b) and 26 (a) and 26 (b) are diagrams for explaining the operation of the manufacturing equipment shown in FIG. 23. The operation of the manufacturing equipment 20B is mainly different from the operation of the manufacturing equipment 20 in the transport operation. Hereinafter, a specific description will be given. At the start of laminating, it is assumed that the laminating jig 52 supported by the elevating mechanism 71A is arranged at the laminating position P1 and the laminating jig 52 supported by the elevating mechanism 71B is arranged at the standby position P4. ..

First, a stacking operation is performed. That is, the electrode stacking body 21 is formed by the electrode laminating device 30A on the laminating portion 520A of the laminating jig 52 supported by the elevating mechanism 71A, and the electrodes are formed on the laminating portion 520B of the laminating jig 52 supported by the elevating mechanism 71A. The electrode laminate 21 is formed by the stacking device 30B. Specifically, the extrusion units 35 and 36 make the upper surface 523a and the lower surface 523a so that the plurality of separator-equipped positive electrodes 11 and 9 conveyed by the positive electrode transfer unit 31 and the negative electrode transfer unit 32 are alternately laminated on the upper surface 523a. Introduced between 524a. When the electrode laminate 21 is formed, the elevating mechanism 71A adjusts the position of the stacking jig 52 along the Z-axis direction. Specifically, the elevating mechanism 71A is laminated by gradually lowering the wall portion 521 so that the laminated positive electrode 11 and negative electrode 9 with a separator do not hinder the introduction of the new positive electrode 11 and negative electrode 9 with a separator. The member 523 is lowered.

Subsequently, the transfer operation by the transfer device 50B is performed. In the transport operation, the laminating jig 52 on which the electrode laminated body 21 is formed is arranged at the carry-out position P2, and an empty laminating jig 52 (another laminating jig) is arranged from the standby position P4 to the laminating position P1. The operation is included. Further, the transport operation includes an operation of arranging the stacking jig 52, which has finished carrying out the electrode laminate 21, at the standby position P4. Specifically, first, as shown in FIG. 25A, the arm portion 712A contracts toward the slider 722A, and the stacking jig 52 moves from the stacking position P1 toward the slider 722A along the Z-axis direction. By being moved, the laminating jig 52 is raised.

Subsequently, as shown in FIG. 25 (b), the stacking jig 52 supported by the elevating mechanism 71A is moved along the Y-axis direction toward the carry-out position P2 by the moving mechanism 72A. As a result, the laminating jig 52 supported by the elevating mechanism 71A is located at the carry-out position P2. In parallel with the movement of the laminating jig 52 supported by the elevating mechanism 71A, the empty laminating jig 52 supported by the elevating mechanism 71B moves from the standby position P4 along the Y-axis direction by the moving mechanism 72B. Will be done. As a result, the laminating jig 52 supported by the elevating mechanism 71B is located above the laminating position P1.

Subsequently, as shown in FIG. 26A, the arm portion 712B extends in the direction away from the slider 722B, so that the empty laminating jig 52 supported by the elevating mechanism 71B is lowered and emptied. Laminating jig 52 is arranged at the laminating position P1. Subsequently, a laminating operation and an unloading operation are performed. That is, the electrode laminate 21 is formed on the stacking jig 52 supported by the elevating mechanism 71B, and the electrode laminate 21 is carried out from the laminating jig 52 supported by the elevating mechanism 71A. Here, the electrode laminated body 21 is carried out first from the laminated portion 520B. While the laminating jig 52 supported by the elevating mechanism 71B is being moved to the laminating position P1, the carrying-out operation of the laminating jig 52 supported by the elevating mechanism 71A may be started. When all the electrode laminated bodies 21 formed on the laminated portion 520B are transferred to the carry-out conveyor 53, the laminating jig 52 is rotated 180 degrees around the rotating shaft 52a by the rotating mechanism 714A. Then, the electrode laminated body 21 formed in the laminated portion 520A is transferred to the carry-out conveyor 53.

Subsequently, as shown in FIG. 26 (b), after all the electrode laminates 21 have been carried out from the stacking jig 52 supported by the elevating mechanism 71A, the laminating cure supported by the elevating mechanism 71A. The jig 52 is moved from the carry-out position P2 toward the standby position P4 by the moving mechanism 72A. As a result, the laminating jig 52 supported by the elevating mechanism 71A is located at the standby position P4. After that, the transport operation, the stacking operation, and the unloading operation are repeated.

In the present embodiment, the transport mechanism 51B is provided above the electrode laminating device 30A and the electrode laminating device 30B, but may be provided below the electrode laminating device 30A and the electrode laminating device 30B. In this case, the laminating jig 52 is conveyed downward from the laminating position P1.

The elevating mechanism 71A may have a configuration in which the laminating jig 52 can be detachably gripped. The elevating mechanism 71A supports the stacking jig 52 by gripping the stacking jig 52. In this case, the elevating mechanism 71B and the moving mechanism 72B are not provided, and the elevating mechanism 71A and the moving mechanism 72A allow each of the plurality of stacking jigs 52 to be placed between the stacking position P1, the carry-out position P2, and the standby position P4. It may be moved.

The transport device 50B may include a laminating jig 52A instead of the laminating jig 52. Further, the transport device 50B may further include a receiving jig 55. In this case, the receiving jig 55 is arranged between the end of the moving mechanism 72A and the moving mechanism 72B on the carry-out position P2 side in the Y-axis direction and the carry-out conveyor 53, and has the same height as the carry-out position P2 in the Z-axis direction. It is placed on the conveyor belt.

As described above, in the present embodiment, the laminating jig 52 on which the electrode laminated body 21 is formed is conveyed from the laminating position P1 along the Z-axis direction (vertical direction). Therefore, it is not necessary to retract the stacking auxiliary unit 38 provided at a position in the horizontal direction from the stacking position P1 to transport the stacking jig 52. Therefore, the electrode laminating device 30B can be simplified as compared with the first embodiment.

The transport mechanism 51B has an elevating mechanism 71A capable of raising and lowering the stacking jig 52 along the Z-axis direction, and a moving mechanism 72A capable of moving the elevating mechanism 71A along the Y-axis direction. Therefore, after the laminating jig 52 is conveyed along the Z-axis direction (vertical direction), the laminating jig 52 can be further conveyed along the Y-axis direction (horizontal direction). Therefore, the laminating jig 52 is conveyed from the laminating position P1 along the Z-axis direction, and a post-process (unloading operation) of carrying out the electrode laminated body 21 formed on the laminating jig 52 from the laminating jig 52 is performed. , It is possible to perform the operation at a position different from the position where the electrode laminating device 30A and the electrode laminating device 30B are installed in a plan view. For example, when the carry-out operation is performed above the stacking position P1, foreign matter such as active material particles adhering to the electrode (negative electrode 9) may fall onto the electrode stacking devices 30A and 30B. On the other hand, since the carry-out operation is performed at a position different from that of the electrode laminating devices 30A and 30B in a plan view, it is possible to prevent foreign matter from falling onto the electrode laminating devices 30A and 30B. Therefore, it is possible to reduce the possibility that the electrode laminate 21 is defective.

The transport mechanism 51B moves the elevating mechanism 71B, which can elevate and elevate the laminating jig 52 different from the laminating jig 52 supported by the elevating mechanism 71A along the Z-axis direction, and the elevating mechanism 71B along the Y-axis direction. It has a possible moving mechanism 72B and. Further, the moving mechanism 72A and the moving mechanism 72B are arranged in parallel along the X-axis direction so as to sandwich the stacking position P1, the carry-out position P2, and the standby position P4 in a plan view. Therefore, after the laminating jig 52 supported by one of the elevating mechanism 71A and the elevating mechanism 71B is conveyed from the laminating position P1, while the electrode laminate 21 is taken out from the laminating jig 52, the elevating mechanism 71A and 71B The laminating jig 52 supported on the other side can be arranged at the laminating position P1 to form the electrode laminated body 21 on the laminating jig 52. Therefore, the step of carrying out the electrode laminate 21 from the stacking jig 52 (unloading operation) and the step of forming the electrode laminate 21 on the stacking jig 52 (lamination operation) can be performed in parallel. ..

The elevating mechanism 71A and the elevating mechanism 71B adjust the position of the laminating jig when the electrode laminated body 21 is formed along the Z-axis direction (first direction). Therefore, the transport direction for transporting the stacking jig 52 and the direction for adjusting the position of the stacking jig when the electrode laminate 21 is formed coincide with each other. Therefore, apart from the elevating mechanisms 71A and 71B, it is not necessary to provide a mechanism for adjusting the position of the laminating jig 52 when the electrode laminated body 21 is formed, so that the transport device 50B can be simplified. It will be possible.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. The sandwiching member 524 may not have a notch 524 g formed therein. In this case, for example, the electrode laminated body 21 can be gripped without releasing the sandwiching of the electrode laminated body 21 by making the size so that the sandwiching member 524 does not overlap the notch 523 g when viewed from the Z-axis direction. It is possible.

In the above embodiment, the power storage device 1 is a lithium ion secondary battery, but the transport devices 50, 50A, and 50B are storage devices for other secondary batteries such as a nickel hydrogen battery, an electric double layer capacitor, a lithium ion capacitor, and the like. It can also be applied to the transfer of an electrode laminate in an apparatus.

9 ... Negative electrode (electrode), 11 ... Positive electrode with separator (electrode), 14b ... Tab, 16b ... Tab, 21 ... Electrode laminate, 30A ... Electrode laminate (first electrode laminate), 30B ... Electrode laminate (No. 1) (2 electrode laminating device), 50, 50A, 50B ... Conveying device, 51 ... Conveying mechanism, 52, 52A ... Laminating jig, 52a ... Rotating shaft, 55 ... Receiving jig, 520A ... Laminating part (first laminating part), 520B ... Laminated part (second laminated part) 521 ... Wall part 523 ... Laminated member 523 g ... Notch (first notch) 524 ... Holding member 524 g ... Notch (second notch) 535 ... Grip part.

Claims (12)

A laminating jig in which a sheet-shaped electrode is laminated along a first direction by a first electrode laminating device and a second electrode laminating device to form an electrode laminated body, and a laminating jig.
A transport mechanism for transporting the stacking jig on which the electrode laminate is formed toward a subsequent process, and
With
The laminating jig includes a first laminating portion in which the electrode laminating body is formed by the first electrode laminating device, and a second laminating portion in which the electrode laminated body is formed by the second electrode laminating device. ,
The first laminated portion and the second laminated portion are integrated with each other.
The conveying mechanism conveys the stacking jig in the vertical direction from the stacking position stacking of the electrode is performed by the first electrode stack unit and the second electrode stacked unit, conveyance device. The transport mechanism includes a first lift mechanism elevatable along the stacking jig in the vertical direction, and a first moving mechanism capable of moving the first lifting mechanism along the horizontal direction, according to claim 1 The transport device according to. The transport mechanism further includes a second elevating mechanism capable of elevating and lowering another laminating jig in the vertical direction, and a second moving mechanism capable of moving the second elevating mechanism in the horizontal direction.
The transport device according to claim 2 , wherein the first moving mechanism and the second moving mechanism are arranged in parallel so as to sandwich the stacking position when viewed from the vertical direction. The first direction is the vertical direction.
The transport device according to claim 2 or 3, wherein the first elevating mechanism adjusts the position of the stacking jig when the electrode laminate is formed along the first direction. A laminating jig in which a sheet-shaped electrode is laminated along a first direction by a first electrode laminating device and a second electrode laminating device to form an electrode laminated body, and a laminating jig.
A transport mechanism for transporting the stacking jig on which the electrode laminate is formed toward a subsequent process, and
With
The laminating jig includes a first laminating portion in which the electrode laminating body is formed by the first electrode laminating device, a second laminating portion in which the electrode laminated body is formed by the second electrode laminating device, and the first laminating portion. A wall portion extending along one direction and separating the first laminated portion from the second laminated portion is provided.
The first laminated portion and the second laminated portion are integrated with each other.
Prior Symbol first laminated portion and the second stacking portion,
A plurality of laminated members arranged along the first direction and fixed to the wall portion, and the electrodes are laminated along the first direction.
The first is arranged along the direction, and a plurality of clamping members for clamping said laminated member and the electrode laminate formed along the first direction, conveyance device. The transport device according to claim 5 , wherein the laminating jig is rotatable about a rotation axis penetrating the wall portion along the first direction. The transport device according to claim 5 or 6, wherein the plurality of sandwiching members can move independently of each other along the first direction. A receiving jig for receiving the electrode laminate formed on the laminate jig is further provided.
The receiving jigs are arranged along the first direction and include a plurality of gripping portions for gripping the electrode laminate.
The plurality of sandwiching members can be integrally moved along the first direction.
The transport device according to claim 5 or 6, wherein the plurality of grip portions can operate independently of each other. A first notch penetrating the laminated member is formed on the outer edge of the laminated member along the first direction.
A second notch that penetrates the sandwiching member is formed on the outer edge of the sandwiching member along the first direction.
The first notch and the second notch overlap each other along the first direction.
The transport device according to claim 8 , wherein the plurality of gripping portions grip the electrode laminate through the first notch and the second notch. A fifth to a ninth aspect of the present invention, wherein the transport mechanism transports the laminating jig along a horizontal direction from a laminating position where the electrodes are laminated by the first electrode laminating device and the second electrode laminating device. The transport device according to any one item. A fifth to a ninth aspect of the present invention, wherein the transport mechanism transports the laminating jig along a vertical direction from a laminating position where the electrodes are laminated by the first electrode laminating device and the second electrode laminating device. The transport device according to any one item. Any one of claims 1 to 11, wherein the electrode tab introduced by the first electrode laminating device and the electrode tab introduced by the second electrode laminating device project in opposite directions to each other. The transport device according to the section.

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