JP2023122877A - Electrode carry-out device - Google Patents

Abstract

To return an electrode separating and dropping from a transfer target electrode to a certain position without damaging the electrode.SOLUTION: An electrode carry-out device includes electrode storage sections 30, 40 in which a plurality of sheet-shaped electrodes 10, 20 are stacked and stored in a horizontal position, a transfer device 50 for transferring, to a stacking table 56 which holds uppermost transfer target electrode 18, 28 out of the plurality of electrodes 10, 20 stacked in the electrode storage sections 30, 40 in an adsorbed state, and on which the electrodes 10, 20 and a separator 22 are stacked, separating devices 60, 65 that separate transfer non-target electrodes 19, 29 as transfer non-targets from the transfer target electrodes 18, 28 and drop them to the electrode storage sections 30, 40 when the transfer non-target electrodes 19, 29 come into close contact with the lower surfaces of the transfer target electrodes 18, 28 held by the transfer device 50, and guide members 32, 42 that guide the transfer non-target electrodes 19, 29 separated from the transfer target electrodes 18, 28 so that the transfer non-target electrodes 19, 29 drop into the electrode storage sections 30, 40 while maintaining them in a constant position in plan view.SELECTED DRAWING: Figure 4

Description

The present invention relates to an electrode unloading device.

Patent Literature 1 discloses an electrode stacking device that includes a box-shaped electrode storage portion with an open top, a transfer device, and an air injection device. A plurality of sheet-like electrodes stacked in a horizontal posture are accommodated in the electrode accommodating portion. The transfer device sucks the upper surface of the electrode in the electrode storage section with a suction pad, and transfers the sucked electrode to the stacking table. When the suction pad sucks the electrode to be transferred, another electrode may come into close contact with the lower surface of this electrode. In this case, the lower electrode is separated from the electrode to be transferred by injecting air from the air injection device toward the electrode. The separated lower electrode falls into the electrode storage section due to its own weight.

JP 2015-082491 A

The electrode housing portion has a box shape and has peripheral wall portions surrounding the electrodes from the front, rear, left, and right. Therefore, in the process of dropping the separated electrode, the outer peripheral edge of the coated portion of the electrode may come into sliding contact with the peripheral wall portion over the entire circumference, causing deformation such as curling up or being damaged. As a countermeasure, it is conceivable to make the electrode housing portion larger than the electrode so that the outer peripheral edge portion of the electrode does not come into contact with the peripheral wall portion of the electrode housing portion. However, with this countermeasure, the drop positions of the electrodes in a plan view are not constant, so the positional relationship between the suction pads and the electrodes is not uniform, and when the electrodes are transferred onto the stacking table, the positions of the electrodes are not aligned. .

The present disclosure has been completed based on the circumstances as described above, and an object of the present disclosure is to return an electrode that has fallen away from a transfer target electrode to a fixed position without damaging it.

The electrode carrying-out device of the present disclosure includes:
an electrode storage unit for storing a plurality of sheet-shaped electrodes stacked in a horizontal posture;
a transfer device that holds the uppermost electrode to be transferred among the plurality of electrodes stacked in the electrode storage part in an adsorbed state and transfers the electrode and the separator to a stacking table for stacking the electrode and the separator; ,
When a transfer non-target electrode that is not to be transferred is in close contact with the lower surface of the transfer target electrode held by the transfer device, the transfer non-target electrode is detached from the transfer target electrode and dropped into the electrode storage part. a release device that causes
and a guide member that guides the non-transfer target electrode separated from the transfer target electrode so as to drop into the electrode storage part while maintaining a constant position in a plan view.

In the electrode carry-out device of the present disclosure, the non-transfer target electrode, which is separated from the transfer target electrode and falls, is kept at a fixed position in plan view by the guide member. This allows the falling non-transferred electrode to be returned to a fixed position in the electrode reservoir without damage.

1 is a perspective view of an electrode unloading device according to Embodiment 1. FIG. Perspective view showing two types of negative electrode shapes Perspective view showing the shape of two types of positive electrodes A perspective view showing a state in which a negative electrode not to be transferred is in close contact with the lower surface of the negative electrode to be transferred lifted by the transfer device. A side view showing a state in which a non-transfer negative electrode is in close contact with the lower surface of the transfer target negative electrode lifted by the transfer device. A perspective view showing a state in which a negative electrode not to be transferred is separated from a negative electrode to be transferred. FIG. 11 is a perspective view showing a negative electrode storage section that constitutes the electrode carry-out device of Embodiment 2;

A preferred example of the present disclosure will now be presented.
- The electrode has a base material, a coated portion in which slurry is applied to the base material, and an uncoated portion in which the base material is exposed without being coated with the slurry, and the guide member is disposed so as to be in sliding contact with the uncoated portion. According to this configuration, even if the uncoated portion is damaged, the power generation function and the electromotive function are not affected, so the performance of the electrode is not hindered by the guide member.
- The electrode carry-out device in which the guide member is inserted through a guide hole formed in the uncoated portion. With this configuration, there is no possibility that the electrode will come off from the guide member.
- The electrode unloading device, wherein a plurality of the guide holes are formed in the uncoated portion, and a plurality of the guide members are individually inserted into the plurality of the guide holes. According to this configuration, the electrodes can be reliably positioned in plan view.
The detachment device detaches the non-transferable electrode from the transferable electrode by an air jet pressure, and the uncoated portion is a target portion of the air jetted from the detachment device. An electrode carry-out device that functions as a According to this configuration, it is possible to prevent the coated portion of the electrode from being deformed by the air injection pressure.

[Embodiment 1]
A first embodiment embodying the present disclosure will be described with reference to FIGS. 1 to 6. FIG. The present invention is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims. In the first embodiment, regarding the front-rear direction, the positive direction of the X-axis in FIGS. 1 to 6 is defined as the front. Regarding the left-right direction, the positive direction of the Y-axis in FIGS. 1 to 4 and 6 is defined as right. The left-right direction and the width direction are used synonymously. Regarding the vertical direction, the positive direction of the Z-axis in FIGS. 1 to 6 is defined as upward.

The electrode carrying-out apparatus of this embodiment is an apparatus used for manufacturing a laminated electrode body composed of alternately laminating a sheet-like negative electrode 10 and a sheet-like positive electrode 20 with a sheet-like separator 55 interposed therebetween. . The electrode unloading device includes a stacking table 56, a negative electrode storage unit 30 for storing the negative electrode 10, a positive electrode storage unit 40 for storing the positive electrode 20, a transfer device 50, and a negative electrode removal device 60. and a positive electrode detachment device 65 . On the upper surface of the stacking table 56, the negative electrodes 10 stored in the negative electrode storage section 30 and the positive electrodes 20 stored in the positive electrode storage section 40 are alternately transferred one by one. Laminated.

<Negative electrode 10>
The negative electrode 10 includes a sheet-like negative electrode substrate 11 having a rectangular shape as a whole and a negative electrode slurry 12 applied to both front and back surfaces of the negative electrode substrate 11 . 1, 2, 4 to 6, the thickness of the negative electrode 10 is exaggerated. The negative electrode slurry 12 is obtained by kneading a negative electrode active material, a binder, a conductive material, a dispersion thickener, and the like, and is applied to a region of the negative electrode substrate 11 excluding the rear end portion. A rectangular region of the negative electrode 10 coated with the negative electrode slurry 12 functions as a negative electrode coating portion 13 .

A rear end region of the negative electrode 10 where the negative electrode substrate 11 is not coated with the negative electrode slurry 12 and the negative electrode substrate 11 is exposed is defined as a negative electrode side uncoated portion 14 elongated in the left-right direction. . One negative electrode cutout 15 and two negative electrode guide holes 16 are formed in the negative electrode uncoated portion 14 . The negative electrode side notch portion 15 is arranged only at one of both left and right end portions of the negative electrode side uncoated portion 14 . The negative electrode side notch portion 15 is formed by cutting out a portion of the rear edge portion 10R and a portion of the side edge portion 10S of the outer peripheral edge of the negative electrode 10 in a rectangular shape. The two negative guide holes 16 are arranged in the center of the negative electrode uncoated portion 14 in the left-right direction and at the left and right ends on the side where the negative notch 15 is not formed. The opening area of the negative electrode side guide hole 16 is smaller than that of the negative electrode side notch portion 15 .

<Positive electrode 20>
The positive electrode 20 has the same configuration as the negative electrode 10 as a whole. 1 and 3, the thickness of the positive electrode 20 is exaggerated. A region of the positive electrode 20 where the positive electrode substrate 21 is coated with the positive electrode slurry 22 functions as a positive electrode side coating portion 23 . A front end region of the positive electrode 20 where the positive electrode substrate 21 is exposed without being coated with the positive electrode slurry 22 is defined as a positive electrode side uncoated portion 24 elongated in the left-right direction. One positive electrode side notch portion 25 and two positive electrode side guide holes 26 are formed in the positive electrode side uncoated portion 24 . The positive electrode side notch portion 25 is arranged only at one of the right and left end portions of the positive electrode side uncoated portion 24 . The positive electrode side notch portion 25 is formed by cutting out a portion of the front edge portion 20F and a portion of the side edge portion 20S of the outer peripheral edge of the positive electrode 20 in a rectangular shape. The two positive electrode side guide holes 26 are arranged at the center portion in the left-right direction of the positive electrode side uncoated portion 24 and at the end portion of the left and right end portions where the positive electrode side notch portion 25 is not formed.

<Negative electrode storage unit 30>
As shown in FIG. 1, the negative electrode storage section 30 is arranged on the left side of the stacking table 56 . The negative electrode storage section 30 has a horizontal negative electrode base 31 and three (a plurality of) negative electrode guide members 32 projecting upward from the rear end portion of the negative electrode base 31 . The three negative electrode guide members 32 are bar-shaped with a circular cross section, and are arranged at intervals in the left-right direction.

In the negative electrode storage part 30, two types of negative electrodes 10 having different shapes of the negative electrode side uncoated parts 14 in plan view are alternately stacked in a horizontal posture and stored. The two types of negative electrodes 10 are held at fixed positions in plan view by fitting the negative electrode side guide holes 16 into the negative electrode guide members. As shown in FIG. 2, the two types of negative electrodes 10 are composed of negative electrodes 10 of the same shape, and one of the negative electrodes 10 can be reversed around a front-rear symmetry axis (not shown) at the center in the left-right direction. Thus, a combination of two types of negative electrodes 10 is established.

When the two types of negative electrodes 10 are stacked one on top of the other so that the outer edges of the negative electrodes 10 are aligned with each other, the positions of the negative electrode side notches 15 are reversed left and right between the two types of negative electrodes 10, and the upper negative electrode side notch. A portion of the lower negative electrode side uncoated portion 14 is exposed in the portion 15 . An exposed region of the lower negative electrode side uncoated portion 14 is defined as a negative electrode side exposed portion 17 . The negative electrode side exposed portion 17 is a region including the negative electrode side guide hole 16 . The position of the negative electrode side guide hole 16 in the central portion in the left-right direction matches between the two types of negative electrodes 10 .

<Positive electrode storage unit 40>
A positive electrode reservoir 40 is arranged to the right of the stacking table 56 . The positive electrode storage part 40 has a horizontal positive electrode base 41 and three (plurality of) positive electrode guide members 42 projecting upward from the front end of the positive electrode base 41 . The three positive electrode guide members 42 are bar-shaped with a circular cross section and are arranged at intervals in the left-right direction.

The positive electrode storage part 40 stores two types of positive electrodes 20 having different shapes of the positive electrode side uncoated parts 24 in a plan view, alternately stacked in a horizontal posture. The two types of positive electrodes 20 are held at fixed positions in plan view by fitting the positive electrode guide hole 26 into the positive electrode guide member 42 . As shown in FIG. 3, the two types of positive electrodes 20 are composed of positive electrodes 20 of the same shape, and one of the positive electrodes 20 can be inverted around a symmetrical axis (not shown) in the front-rear direction at the center in the left-right direction. Thus, a combination of two types of positive electrodes 20 is established.

When the two types of positive electrodes 20 are stacked one on top of the other so that the outer edges of the positive electrodes 20 are aligned, the position of the positive electrode side notch 25 is reversed left and right between the two types of positive electrodes 20, and the upper positive electrode side notch. A portion of the lower positive electrode side uncoated portion 24 is exposed at the portion 25 . The exposed region of the lower positive electrode side uncoated portion 24 is defined as a positive electrode side exposed portion 27 . The positive electrode side exposed portion 27 is a region including the positive electrode side guide hole 26 . The position of the positive electrode side guide hole 26 in the central portion in the left-right direction matches between the two types of positive electrodes 20 .

<Transfer device 50>
The transfer device 50 has a function of picking up, one by one, the uppermost negative electrode 18 to be transferred among the plurality of negative electrodes 10 stacked in the negative electrode storage section 30 and transferring it to the stacking table 56 . The transfer device 50 also has a function of picking up the uppermost positive electrode 28 to be transferred one by one from among the plurality of positive electrodes 20 stacked in the positive electrode storage section 40 and transferring it to the stacking table 56 .

The transfer device 50 includes a movable member 51 moved by a drive mechanism (not shown), an arm portion 52 extending downward from the movable member 51 , and a suction cup 53 attached to the lower end portion of the arm portion 52 . The movable member 51 moves back and forth in the horizontal direction between a position above the negative electrode storage section 30 , a position above the stacking table 56 , and a position above the positive electrode storage section 40 . The transfer path of the movable member 51 includes a position above the stacking table 56 . The movable member 51 moves up and down directly above the negative electrode storage section 30 for unloading, feeds up and down directly above the stacking table 56 , and carries out up and down directly above the positive electrode storage section 40 . conduct. The suction cup 53 sticks to the upper surface of the negative electrode side coating portion 13 to suck the negative electrode 10 . The suction cup 53 adheres to the upper surface of the positive electrode side coating portion 23 to suck the positive electrode 20 .

<Negative Electrode Detachment Device 60>
The negative electrode detachment device 60 is provided above the negative electrode storage section 30 . When the transfer device 50 lifts a plurality of negative electrodes 10 at once, the negative electrode detachment device 60 leaves only the uppermost transfer target negative electrode 18 and the transfer non-target negative electrode 19 below it. It is a device for separating the The transfer non-target negative electrode 19 is the negative electrode 10 that is stacked second from the uppermost end among the plurality of negative electrodes 10 stacked in the negative electrode storage portion 30 .

The negative electrode detachment device 60 is horizontally moved by a driving mechanism (not shown). The negative electrode separating device 60 has a negative electrode air nozzle 61 that jets air downward or obliquely downward. When the negative electrode detachment device 60 moves in the left-right direction, the negative electrode air nozzle 61 moves in the left-right direction with the air ejection direction directed toward the negative electrode side uncoated portion 14 .

<Positive Electrode Separation Device 65>
The positive electrode detachment device 65 is provided above the positive electrode storage section 40 . When the transfer device 50 lifts a plurality of positive electrodes 20 at once, the positive electrode detachment device 65 leaves only the uppermost transfer target positive electrode 28 and the transfer non-target positive electrode 29 below it. It is a device for separating the The transfer non-target positive electrode 29 is the positive electrode 20 that is stacked second from the uppermost end among the plurality of positive electrodes 20 stacked in the positive electrode storage portion 40 .

The positive electrode detachment device 65 is moved laterally by a drive mechanism (not shown). The positive electrode separation device 65 has a positive electrode air nozzle 66 that jets air downward or obliquely downward. When the positive electrode detachment device 65 moves in the left-right direction, the positive electrode air nozzle 66 moves in the left-right direction with the air ejection direction directed toward the positive electrode side uncoated portion 24 .

<Unloading process>
Next, the process of transferring the negative electrode 10 and the positive electrode 20 to the stacking table 56 will be described. First, the suction cup 53 of the transfer device 50 moves right above the negative electrode storage section 30 and descends to suck the upper surface of the negative electrode 18 to be transferred. When the sucker 53 rises while sucking the negative electrode 18 to be transferred, the negative electrode 18 to be transferred is lifted. At this time, if the non-transfer negative electrode 19 is in close contact with the lower surface of the transfer negative electrode 18 due to static electricity or the like, the transfer non-target negative electrode 19 is lifted together with the transfer negative electrode 18 . In this case, air is jetted from the negative electrode air nozzle 61 of the negative electrode separation device 60 toward the upper surface of the negative electrode side exposed portion 17 of the negative electrode 19 not to be transferred. The negative electrode 19 not to be transferred is separated from the negative electrode 18 to be transferred by the jet pressure of the air and falls.

Since the two negative electrode side guide holes 16 are fitted into the two negative electrode guide members 32, the non-transferable negative electrode 19 that falls does not shift its position or change its direction in plan view. . As a result, the non-transfer negative electrode 19 separated from the transfer target negative electrode 18 drops while maintaining a constant position and orientation, and returns to its original position (stacking position) in the negative electrode storage section 30 .

After detaching the non-transfer negative electrode 19 , the transfer target negative electrode 18 is transported and placed on the stacking table 56 by the transfer device 50 . When the negative electrode 19 not to be transferred is separated, the air ejected from the negative electrode separating device 60 is blown toward only the negative electrode side exposed portion 17 of the negative electrode 19 not to be transferred, and the negative electrode 18 to be transferred is blown. The negative electrode side uncoated portion 14 is not sprayed. Therefore, the negative electrode 18 to be transferred is not displaced in the front, rear, left, and right directions with respect to the sucker 53 due to the air injection pressure, and the mounting position of the negative electrode 18 to be transferred on the stacking table 56 is constant.

After placing the negative electrode 10 on the stacking table 56 , the separator 55 is placed on the upper surface of the placed negative electrode 10 . During this time, the suction cup 53 of the transfer device 50 moves right above the positive electrode storage part 40 and descends to suck the upper surface of the positive electrode 28 to be transferred. When the sucker 53 rises while sucking the positive electrode 28 to be transferred, the positive electrode 28 to be transferred is lifted. At this time, when the non-transferred positive electrode 29 is in close contact with the lower surface of the transferable positive electrode 28 and is lifted together with it, the positive electrode air nozzle 66 of the positive electrode detachment device 65 is removed as in the case of the negative electrode 10 . air is jetted toward the upper surface of the positive electrode side exposed portion 27 of the transfer non-target positive electrode 29 . Due to the jet pressure of the air, the transfer non-target positive electrode 29 is separated from the transfer target positive electrode 28 and falls.

Since the two positive electrode side guide holes 26 are fitted into the two positive electrode guide members 42, the non-target positive electrode 29 to be dropped does not shift its position or change direction in plan view. . As a result, the non-transfer positive electrode 29 separated from the transfer target positive electrode 28 drops while maintaining a constant position and orientation, and returns to its original position (stacking position) in the positive electrode storage section 40 .

After separating the positive electrode 29 not to be transferred, the positive electrode 28 to be transferred is transferred to the upper surface of the stacking table 56 by the transfer device 50 and placed on the upper surface of the separator 55 . When the positive electrode 29 not to be transferred is separated, the air ejected from the positive electrode separating device 65 is blown only toward the positive electrode side exposed portion 27 of the positive electrode 29 not to be transferred, and the negative electrode 18 to be transferred is blown. The positive electrode side uncoated portion 24 is not sprayed. Therefore, the transfer target positive electrode 28 is not displaced in the front, rear, left, and right directions with respect to the sucker 53 due to the air injection pressure, and the placement position of the transfer target positive electrode 28 on the stacking table 56 is constant. That is, in plan view, the positive electrode 28 to be transferred is placed in a proper positional relationship with respect to the negative electrode 10 placed on the stacking table 56 .

After the positive electrode 20 is placed on the stacking table 56 , the separator 55 is placed on the top surface of the placed positive electrode 20 . Thereafter, the step of transferring the negative electrode 10 described above and the step of transferring the positive electrode 20 described above are repeated to form a stacked electrode assembly on the stacking table 56 .

When the negative electrode 10 is unloaded from the negative electrode storage unit 30, the non-transferable negative electrode 19, which is detached and dropped from the negative electrode 18 to be transferred, is used as the negative electrode 18 to be transferred in the next carrying-out step. transferred to As described above, the negative electrode 19 not to be transferred that has fallen away from the negative electrode 18 to be transferred is placed at a predetermined position in the plan view of the negative electrode storage section 30 by the negative electrode guide member 32 (it is not stacked from the beginning). position). Therefore, the non-transferred negative electrode 19 returned to the negative electrode storage section 30 is attracted to the suction cups 53 while maintaining a proper positional relationship with the suction cups 53 .

When the positive electrode 20 is unloaded from the positive electrode storage unit 40, the non-transported positive electrode 29, which is detached and dropped from the transported positive electrode 28, is used as the transported positive electrode 28 in the next transport step. transferred to Similarly to the negative electrode 10 , the non-transported positive electrode 29 that has fallen away from the positive electrode 28 to be transported is also returned to a predetermined position in the plan view of the positive electrode storage section 40 by the positive electrode guide member 42 . Therefore, the transferred non-target positive electrode 29 returned to the positive electrode storage section 40 is attracted to the suction cups 53 while maintaining a proper positional relationship with the suction cups 53 .

<Actions and effects of the first embodiment>
The electrode unloading device of Embodiment 1 has a negative electrode storage unit 30 , a positive electrode storage unit 40 , a transfer device 50 , a negative electrode separation device 60 , and a positive electrode separation device 65 . In the negative electrode storage part 30, a plurality of sheet-like negative electrodes 10 are stacked in a horizontal posture and stored. The plurality of negative electrodes 10 stacked in the negative electrode storage section 30 are composed of two types of negative electrodes 10 having different shapes in plan view. In the negative electrode storage section 30, two types of negative electrodes 10 are alternately stacked. The negative electrode 10 includes a negative electrode base material 11, a negative electrode side coating portion 13 in which the negative electrode slurry 12 is applied to the negative electrode base material 11, and the negative electrode base material 11 is exposed without the negative electrode slurry 12 being applied. and the negative electrode side uncoated portion 14 .

The positive electrode storage unit 40 stores a plurality of sheet-like positive electrodes 20 stacked in a horizontal posture. The plurality of positive electrodes 20 stacked in the positive electrode storage section 40 are composed of two types of positive electrodes 20 having different shapes in plan view. In the positive electrode storage section 40, two types of positive electrodes 20 are alternately stacked. The positive electrode 20 includes a positive electrode base material 21, a positive electrode side coating portion 23 in which the positive electrode base material 21 is coated with the negative electrode slurry 12, and the positive electrode base material 21 is exposed without the positive electrode slurry 22 being applied. and a positive electrode side uncoated portion 24 .

The transfer device 50 holds the uppermost negative electrode 18 to be transferred among the plurality of negative electrodes 10 stacked in the negative electrode storage part 30 in an adsorbed state, and separates the negative electrode 10, the positive electrode 20, and the separator. 55 to a stacking table 56 for stacking. In addition, the transfer device 50 holds the uppermost positive electrode 28 to be transferred among the plurality of positive electrodes 20 stacked in the positive electrode storage section 40 in an attracted state and transfers it to the stacking table 56 .

The negative electrode detaching device 60 removes the non-transferable negative electrode 19 when the non-transferable negative electrode 19 is in close contact with the lower surface of the transferable negative electrode 18 adsorbed and held by the transfer device 50 . It is separated from the negative electrode 18 to be transferred by the jet pressure of the air and dropped into the negative electrode storage section 30 . The negative electrode separating device 60 separates the negative electrode 19 not to be transferred from the negative electrode 18 to be transferred by the air injection pressure. The negative electrode side uncoated portion 14 of the negative electrode 10 functions as a target portion to which the air jetted from the negative electrode detachment device 60 is blown. It is possible to prevent deformation of the negative electrode side coated portion 13 of the negative electrode 10 due to the air injection pressure.

When the non-transferable positive electrode 29, which is not to be transferred, is brought into close contact with the lower surface of the positive electrode 28 to be transferred which is adsorbed and held by the transfer device 50, the positive electrode detachment device 65 removes the positive electrode 29 to be transferred. It is separated from the positive electrode 28 to be transferred by the jet pressure of the air and is dropped into the positive electrode storage section 40 . The positive electrode separation device 65 separates the transfer non-target positive electrode 29 from the transfer target positive electrode 28 by air injection pressure. The positive electrode side uncoated portion 24 of the positive electrode 20 functions as a target portion to which the air ejected from the positive electrode detachment device 65 is blown. It is possible to prevent deformation of the positive electrode side coated portion 23 of the positive electrode 20 due to the air injection pressure.

The negative electrode storage section 30 guides the non-transfer negative electrode 19 separated from the transfer target negative electrode 18 so as to fall to a predetermined position in the negative electrode storage section 30 while maintaining a fixed position in plan view. A plurality of negative electrode guide members 32 are provided. The negative electrode guide member 32 allows the falling non-transferable negative electrode 19 to be returned to a fixed position in the negative electrode reservoir 30 without damage.

The negative electrode guide member 32 is arranged so as to be in sliding contact with the negative electrode side uncoated portion 14 . Even if the negative electrode side uncoated portion 14 is damaged, the power generation function and the electromotive function are not affected, so the performance of the negative electrode 10 is not hindered by the negative electrode guide member 32 .

A plurality of negative electrode guide holes 16 are formed in the negative electrode uncoated portion 14 . The plurality of negative electrode guide members 32 are individually inserted into the plurality of negative electrode side guide holes 16 . With this configuration, there is no risk that the negative electrode 10 will come off the negative electrode guide member 32 . The negative electrode 10 can be reliably positioned with respect to the negative electrode storage section 30 in plan view.

The positive electrode storage section 40 guides the transfer non-target positive electrode 29 separated from the transfer target positive electrode 28 so as to drop to a predetermined position of the positive electrode storage section 40 while maintaining a constant position in plan view. A plurality of positive electrode guide members 42 are provided. The positive electrode guide member 42 allows the falling transfer asymmetric positive electrode 29 to be returned to a fixed position in the positive electrode reservoir 40 without damage.

The positive electrode guide member 42 is arranged so as to be in sliding contact with the positive electrode side uncoated portion 24 . Even if the positive electrode side uncoated portion 24 is damaged, the power generation function and the electromotive function are not affected, so the performance of the positive electrode 20 is not hindered by the positive electrode guide member 42 .

A plurality of positive electrode side guide holes 26 are formed in the positive electrode side uncoated portion 24 . The plurality of positive electrode guide members 42 are individually inserted through the plurality of positive electrode side guide holes 26 . With this configuration, there is no risk that the positive electrode 20 will come off the positive electrode guide member 42 . The positive electrode 20 can be reliably positioned with respect to the positive electrode storage portion 40 in plan view.

The two types of negative electrodes 10 have negative electrode side exposed portions 17 that are not hidden by the upper negative electrode 10 and are exposed in plan view when the two types of negative electrodes 10 are overlapped. When the non-transferable negative electrode 19 is in close contact with the lower surface of the transferable negative electrode 18 , the negative electrode separation device 60 jets air toward only the negative electrode side exposed portion 17 of the non-transferable negative electrode 19 . According to this configuration, the air injection pressure does not act on the negative electrode 18 to be transferred that is attracted to the transfer device 50 . Therefore, when the negative electrode 19 not to be transferred is separated from the negative electrode 18 to be transferred by injecting air, the negative electrode 18 to be transferred can be prevented from being displaced with respect to the transfer device 50 .

The two types of positive electrodes 20 have a positive electrode side exposed portion 27 that is not hidden by the upper positive electrode 20 and is exposed in plan view when the two types of positive electrodes 20 are overlapped. When the non-transferable positive electrode 29 is brought into close contact with the lower surface of the transferable positive electrode 28 , the positive electrode separation device 65 injects air toward only the positive electrode side exposed portion 27 of the non-transferable positive electrode 29 . According to this configuration, the injection pressure of air does not act on the positive electrode 28 to be transferred which is attracted to the transfer device 50 . Therefore, it is possible to prevent the transfer target positive electrode 28 from being displaced with respect to the transfer device 50 when air is jetted to separate the transfer non-target positive electrode 29 from the transfer target positive electrode 28 .

The negative electrode side exposed portion 17 is formed only in the negative electrode side uncoated portion 14 of the negative electrode 10 . Even if the negative electrode side uncoated portion 14 is damaged, it does not affect the power generation function and the electromotive function. never come. The positive electrode side exposed portion 27 is formed only in the positive electrode side uncoated portion 24 of the positive electrode 20 . Even if the positive electrode side uncoated portion 24 is damaged, it does not affect the power generation function and the electromotive function. never come.

When one of the two types of negative electrodes 10 stacked in the negative electrode storage section 30 is turned upside down, the shape of the negative electrode side uncoated portions 14 of both negative electrodes 10 in plan view is , are identical. Therefore, only one type of negative electrode 10 is required. When one positive electrode 20 of the two types of positive electrodes 20 stacked in the positive electrode storage portion 40 is turned upside down, the shape of the positive electrode side uncoated portions 24 of both positive electrodes 20 in plan view is , are identical. Therefore, only one type of positive electrode 20 is required.

The negative electrode side uncoated portion 14 has a negative electrode cutout portion 15 that exposes the negative electrode side exposed portion 17 of the negative electrode side uncoated portion 14 of the lower negative electrode 10 when the two types of negative electrodes 10 are overlapped. is formed. According to this configuration, the negative electrode-side exposed portion 17 does not need to have a shape that partially protrudes from the outer peripheral edge of the negative electrode-side uncoated portion 14, so that the negative electrode-side exposed portion 17 is not deformed by interference of foreign matter. can be prevented. The negative electrode side cutout portion 15 is formed by recessing a portion of the linear edge portion (the rear edge portion 10R and the side edge portion 10S) of the outer peripheral edge of the negative electrode side uncoated portion 14 . According to this configuration, the position of the negative electrode-side cutout 15 and the orientation of the negative electrode 10 in a plan view can be visually confirmed more easily than in the case of a hole-shaped cutout having the opening edge connected over the entire circumference.

The positive electrode side uncoated portion 24 has a positive electrode side notch portion 25 that exposes the positive electrode side exposed portion 27 of the positive electrode side uncoated portion 24 of the lower positive electrode 20 when the two types of positive electrodes 20 are overlapped. is formed. According to this configuration, the positive electrode side exposed portion 27 does not need to have a shape that partially protrudes from the outer peripheral edge of the positive electrode side uncoated portion 24, so that the positive electrode side exposed portion 27 is not deformed by interference of foreign matter. can be prevented. The positive electrode side notch portion 25 has a shape in which a portion of the linear edge portion (the front edge portion 20F and the side edge portion 20S) of the outer peripheral edge of the positive electrode side uncoated portion 24 is recessed. According to this configuration, the position of the positive electrode-side cutout 25 and the direction of the positive electrode 20 in a plan view can be visually confirmed more easily than when the opening edge is a hole-shaped cutout that extends over the entire circumference.

[Embodiment 2]
A second embodiment embodying the present disclosure will be described with reference to FIG. The present invention is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims. In the first embodiment, regarding the front-rear direction, the positive direction of the X-axis in FIG. 7 is defined as the front. Regarding the left-right direction, the positive direction of the Y-axis in FIG. 7 is defined as right. The left-right direction and the width direction are used synonymously. Regarding the vertical direction, the positive direction of the Z-axis in FIG. 7 is defined as upward.

In the electrode unloading device of the second embodiment, the guide member 71 provided in the electrode storage section 70 has a form different from that of the first embodiment. The guide member 71 of the second embodiment protrudes upward in a rod shape from a plurality of positions on the outer peripheral edge of the base 72 . The plurality of guide members 71 are adapted to slidably contact a plurality of locations on the front edge, a plurality of locations on both left and right side edges, and a plurality of locations on the rear edge of the outer peripheral edge of the electrode 73 . Compared with the case where the entire outer peripheral edge of the electrode 73 is in sliding contact, deformation and damage of the outer peripheral edge portion of the electrode 73 can be suppressed. Further, since the guide member 71 has a rod shape with a circular cross section, the guide member 71 and the outer peripheral edge of the electrode 73 are in point contact. Therefore, in this respect as well, deformation and damage to the outer peripheral portion of the electrode 73 can be suppressed.

<Other Examples>
The present invention is not limited to the embodiments explained by the above description and drawings, and the following embodiments are also included in the technical scope of the present invention.
The detachment device may inject air toward the coating portion.
The number of guide members (the number of guide holes formed in one electrode) is not limited to three, and may be two or four or more.
The number of guide members (the number of guide holes formed in one electrode) may be only one. In this case, if the cross-sectional shape of the guide member (the opening shape of the guide hole) is made non-circular, the electrode can be held in a fixed posture in plan view.

Instead of forming a guide hole in the electrode, a concave portion or a convex portion may be formed on the outer peripheral edge of the non-coated portion, and the concave portion or the convex portion may be brought into sliding contact with the guide member.

10... Negative electrode (electrode)
11... Base material for negative electrode (base material)
12 Slurry for negative electrode (slurry)
13... Negative electrode side coating part (coating part)
14... Negative electrode side uncoated portion (uncoated portion)
15... Negative electrode side notch (notch)
16 Negative electrode side guide hole (guide hole)
18 Negative electrode to be transferred (electrode to be transferred)
19... Transfer non-target negative electrode (transfer non-target electrode)
20... Positive electrode (electrode)
21 ... Base material for positive electrode (base material)
22 Slurry for positive electrode (slurry)
23... Positive electrode side coating part (coating part)
24... positive electrode side uncoated portion (uncoated portion)
25... positive electrode side notch (notch)
26...Positive electrode side guide hole (guide hole)
28... Positive electrode to be transferred (electrode to be transferred)
29... Transfer asymmetric positive electrode (transfer asymmetric electrode)
30... Negative electrode storage part (electrode storage part)
32... Negative electrode guide member (guide member)
40... Positive electrode storage part (electrode storage part)
42... Positive electrode guide member (guide member)
50... Transfer device 55... Separator 56... Stacking table 60... Negative electrode detachment device (detachment device)
65 Positive electrode detachment device (detachment device)
70... Electrode storage part 71... Guide member 73... Electrode

Claims (5)

an electrode storage unit for storing a plurality of sheet-shaped electrodes stacked in a horizontal posture;
a transfer device that holds the uppermost electrode to be transferred among the plurality of electrodes stacked in the electrode storage part in an adsorbed state and transfers the electrode and the separator to a stacking table for stacking the electrode and the separator; ,
When a transfer non-target electrode that is not to be transferred is in close contact with the lower surface of the transfer target electrode held by the transfer device, the transfer non-target electrode is detached from the transfer target electrode and dropped into the electrode storage part. a release device that causes
and a guide member that guides the non-transferred electrode separated from the transferable electrode so as to drop into the electrode storage section while maintaining a constant position in a plan view. The electrode has a substrate, a coated portion in which slurry is applied to the substrate, and an uncoated portion in which the substrate is exposed without being coated with the slurry,
2. The electrode unloading device according to claim 1, wherein said guide member is arranged so as to be in sliding contact with said uncoated portion. 3. The electrode unloading device according to claim 2, wherein said guide member is inserted through a guide hole formed in said uncoated portion. A plurality of the guide holes are formed in the uncoated portion,
4. The electrode unloading device according to claim 3, wherein a plurality of said guide members are individually inserted into a plurality of said guide holes. The detachment device is adapted to detach the non-transfer target electrode from the transfer target electrode by an air jet pressure,
5. The electrode unloading device according to any one of claims 2 to 4, wherein the uncoated portion functions as a portion to be sprayed with air jetted from the detachment device.

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