JPH06203839A - Device for spirally winding and molding strip electrode and strip separator of battery - Google Patents

Abstract

PURPOSE:To stabilize the position of each element so as to prevent crumpling and spiral shift of each element by providing function as various means around a dividing table, when making a strip positive electrode, a strip negative electrode and a strip separator overlap one another and spirally winding them together to provide a cylindrical electrode set. CONSTITUTION:First to sixth work stations Stn1-Stn6 are set in the six evenly divided positions of the outer peripheral surface of a circular dividing table 10, the center element of a device, and a set of spiral electrodes are sequentially fabricated through the process of passing the stations in sequence to make a complete rotation. Deep recessed portions 10a are provided at the six evenly divided positions of the outer periphery of the table 10 and used as working space for winding operations, and first and second fixed guides 11, 12 are disposed in connection with each other along the circumferential direction of the table 10. While a strip positive electrode 1, a strip separator 3 and a strip negative electrode 2 thus made to overlap one another pass the guides 11, 12, magnet weights 17a, 17b are used to apply tension to the positive electrode 1, the separator 3 and the negative electrode 2 by way of first and second movable guides 14, 16, for winding the electrodes and the separator together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facility for manufacturing a spiral type electrode set incorporated in a cylindrical lithium battery or the like, and in particular, a band-shaped positive electrode, a negative electrode and a separator are wound in a spiral shape. The present invention relates to a molding device.

[0002]

BACKGROUND OF THE INVENTION In a cylindrical lithium battery or the like, a positive electrode and a negative electrode, which are formed in a strip shape, are stacked with a separator interposed therebetween, and the whole is spirally wound to form a cylindrical electrode set. Is known (called a spiral electrode type battery).

This type of spiral electrode type battery has a completely different electrode structure from the conventionally mass-produced manganese battery, alkaline battery, nickel cadmium battery and the like. The current situation is that it cannot be diverted and is produced in a state close to handmade. Since the strip-shaped positive electrode is formed by using the punching metal as the core material and depositing the powder on both surfaces of the core material, the core material is often not located parallel to the center position. In such a case, there is a possibility that the core material may be caught on the basis of the surface of the core material at the time of the winding process, and collapse may occur.

An object of the present invention is to provide an apparatus capable of automatically and efficiently performing the work of stacking a strip positive electrode, a strip negative electrode, and a strip separator and spirally winding them to form a cylindrical electrode set. To provide.

[0005]

In order to achieve the above-mentioned object, in the present invention, two first and second fixed guides are arranged so as to be continuous with each other with a winding work space interposed therebetween. A first movable guide having a position overlapping with the first fixed guide and a position separated therefrom, and a second movable guide having a position overlapping with the second fixed guide and a position separated therefrom. A plurality of working jig sets each including and are arranged at equal intervals on the circumference, and an indexing table is provided which is divided and rotated with the interval of the working jig sets as one unit. Then, a first electrode setting means for setting one strip-shaped electrode on the first fixed guide of the working jig set in an initial state at a certain indexing position, and a first electrode setting with respect to the rotation direction of the indexing table. The first movable guide is arranged at a predetermined indexing position on the downstream side of the means, and is overlapped on the first fixed guide on which the one strip-shaped electrode is set in the process of rotating the working jig set in a divided manner. On the guide,
Separator setting means for setting a long strip-shaped separator so as to extend over the second fixed guide, and a predetermined indexing position further downstream of the separator setting means, and stacked on the second fixed guide. In the process in which the second electrode setting means for setting another strip-shaped electrode on the second movable guide and the work jig set that has been processed by the second electrode setting means are rotated in a divided manner, into the work space for winding. And a means for winding the separator and both strip-shaped electrodes around a rotating core, and means for taking out the spirally-shaped electrode set from the winding work space of the working jig set that has been processed by the winding means. .

[0006]

A station having the functions of the respective means is provided around the indexing table, and each work jig set sequentially passes through each station in accordance with the divisional rotation of the indexing table. A spiral electrode set is automatically formed using the strip electrode, the strip separator, and the second strip electrode as materials.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a front view showing an overall schematic configuration of an apparatus according to an embodiment of the present invention.
Indicates an indexing table which is a central element of the device. The following work jig sets are rotationally symmetrically arranged at positions where the outer peripheral surface of the circular indexing table 10 is divided into six equal parts, and the indexing table 10 is rotated clockwise by 60 degrees and divided into six parts. It makes a round by rotation. Around the indexing table 10, the first to sixth work stations St are provided.
n1 to Stn6 are set, and the index table 10
In the process in which each work jig set sequentially passes through each station and goes around, spiral electrode sets are sequentially manufactured. The movement of the work jig set and the movement of the peripheral devices at the first to sixth stations are shown in FIGS. 2 to 7, respectively.

First, the construction of the work jig set will be described with reference to these drawings. As shown in FIG. 1, a deep recess 10a is formed at a position that divides the outer peripheral surface of the indexing table 10 into six equal parts, and this recess 10a is the above-mentioned winding work space. Indexing table 1 with the recess 10a interposed therebetween
Two first and second fixed guides 11 and 12 are arranged so as to be continuous in the circumferential direction of 0.

As shown in FIGS. 2 to 7, the first fixed guide 11 is provided with a groove 11a for setting the strip positive electrode 1 which is one strip electrode, and the second fixed guide. A groove 12 a for setting the strip-shaped separator 3 is formed at 12. These concave grooves 11a, 1
2a are arranged on the same circumferential line with the recess 10a interposed therebetween.
Inside the first fixed guide 11, a magnet (not shown) for stably holding the strip-shaped positive electrode 1 mounted in the groove 11a is provided.

A fine adjustment guide 13 is provided at the tip of the first fixed guide 11. This fine adjustment guide 13
Can be moved in a direction orthogonal to the arrangement direction of the concave groove 11a, and its width is made to match the width of the strip positive electrode 1. The width of the concave groove 11a is set to be slightly wider than the width.

Corresponding to the first fixed guide 11, a first movable guide 14 is provided by a displacement driving mechanism (not shown) to take a position overlapping with the first fixed guide 11 and a position away from the first fixed guide 11. ing. Then, the concave groove 1 for setting the strip separator 3 also on the first movable guide 14.
4a is formed.

Further, the first movable guide 14 is shown in FIG.
As shown in FIG. 4, a large number of through holes 14b are formed in the bottom surface of the concave groove 14a, and the external suction pump 1 is provided via the internal space 14c.
Connected to 5. As a result, when the suction pump 15 is operated, negative pressure is generated in the internal space 14c, and the strip-shaped separator 3 mounted in the groove 14a is suction-held.

The first movable guide 14 is attached to the first
When it is arranged on the fixed guide 11 of the
4a is adjusted to be located on the same plane as the concave groove 12a of the second fixed guide 12. A vacuum suction mechanism for sucking the strip-shaped separator 3 is also provided in the concave groove 12a similarly to the first movable guide 14, although not shown.

On the other hand, corresponding to the second fixed guide 12, the second fixed guide 12 is driven by a displacement driving mechanism (not shown).
A second movable guide 16 is provided, which has a position overlapping with the upper position and a position separated from the upper position. The second movable guide 16 is provided with a groove 16a for setting the strip negative electrode 2 which is the other strip electrode, and is provided with a vacuum suction mechanism similar to the above guide.

Further, a magnet weight 17b corresponding to the first movable guide 14 and a magnet weight 17a corresponding to the second movable guide 16 are arranged via a holding mechanism which will be described later. At the time of winding the separator 3, a desired tension is applied to them.

Further, winding core shafts 18a and 18b, which are divided into two, are provided in the recess 10a. These core shafts 18a and 18b are moved forward and backward in the axial direction and are rotationally driven by the winding drive mechanism described later.

The above is the configuration of the working jig set. Next, the movements of the work jig set and the peripheral mechanism at each work station will be described in order. First, in the first station, the strip-shaped positive electrode 1 is set on the first fixed guide 11. As shown in FIG. 2, the adhesive tape 5 is attached in advance to the end of the strip positive electrode 1 in a protruding state. The belt-shaped positive electrode 1 with the adhesive tape 5 is set in the concave groove 11a of the first fixed guide 11 by the vacuum suction type handling mechanism 19 which is the first electrode setting means shown in FIG. Then, the strip-shaped positive electrode 1 is attracted and held by the magnet on the first fixed guide 11 (the positive electrode 1 has a punching metal as a core material and is magnetically attracted). Further, in the first station, next, the first fixed guide 11 on which the strip-shaped positive electrode 1 is set is placed on the first fixed guide 11.
The movable guide 14 of is overlapped. The state is shown in FIG.

Next, in the process in which the working jig set rotates in two parts from the first station to the second station, and further to the third station, as shown in FIG. 3, the movable jig is movable with the concave groove 12a of the second fixed guide 12. The long strip-shaped separator 3 is set so as to span the groove 14a of the guide 14. That is, as shown in FIG. 1, the separator supply drum 2 forming a part of the separator setting means in the second station.
0 is set. The separator pulled out from the roll 4 in which the strip separator 3 is continuously wound is a drum 20.
Vacuum suction is performed, and a predetermined portion of the separator adsorbed on the drum 20 is cut into a predetermined length with a heat wire cutter 21,
The adhesive tape 7 is attached to the tip of the next separator in a state of protruding. That is, the separator 3 pulled out from the roll 4 is guided to the drum 20 via the plurality of rollers 22a and 22b, but a returning device 23 that grips the separator 4 in the vicinity of the drum 20 and pulls the separator 4 in the opposite direction is provided. After being disposed and cut by the heat ray cutter 21, the separator on the trailing side is retracted by a predetermined amount, separated from the preceding separator 4 by a predetermined distance, and then the adhesive tape 7 is attached. The tension roller 22b absorbs the looseness of the separator 4 at the time of retreating.

Then, in the process of rotating the working jig set from the first station to the second station, the drum 20 rotates synchronously, and the separator 3 is attached to the second fixed guide 12.
Of the separator 3 is set, and the drum 20 rotates in synchronization with the work jig set rotating to the third station, and the other half of the separator 3 is set on the first movable guide 14. The separator 3 set on the second fixed guide 12 and the first movable guide 14 is held by the vacuum suction mechanism as described above.

At the next third station, as shown in FIG. 4, the second fixed guide 1 on which the separator 3 is set.
The second movable guide 16 is overlaid on top of 2. Figure 1
It is also shown in 0.

Next, in the process of rotating the working jig set from the third station to the fourth station, as shown in FIG. 5, the strip negative electrode 2 is moved to the concave groove 16a of the second movable guide 16.
Set to. As shown in FIG. 1, the third station has a negative electrode supply mechanism 25 as a second electrode setting means. This is a belt-type transport mechanism, in which the belt-shaped negative electrode 2 with the adhesive tape 6 protruding to the end is used as a belt for the vacuum chamber 2.
6, the belt 27 with holes is rotated as the indexing table 10 rotates, and the strip-shaped negative electrode 2 adsorbed on the belt 27 is set on the second movable guide 16. . Then, the strip-shaped negative electrode 2 is held by the second movable guide 16 by the vacuum suction mechanism.

At the next fourth station, as shown in FIG. 5, the holding jig 30 enters the recess 10a, and first presses the end of the strip negative electrode 2 to attach the adhesive tape 6 to the separator 3.
Then, the separator 3 is pressed and the adhesive tape 5 at the end of the belt-shaped positive electrode 1 is attached to the separator 3. Further, in the state where the separator 3 is held by the holding jig 30, the core shaft 18a, which has been retracted to the both sides of the recess 10a until then,
18b advance to each other and sandwich the pressed separator 3 between the tips of the half-split core shafts 18a and 18b.
When the separator 3 is sandwiched between the winding shafts 18a and 18b, the holding jig 30 retreats back to its original position.

At the same time, in the fourth station, the magnet weights 17a and 17b move, and the magnet weight 1 is attached to the end of the separator 3 set in the first movable guide 14.
7b overlap, and the magnet weight 17a overlaps the end of the strip negative electrode 2 set in the second movable guide 16. The magnet weights 17a and 17b have built-in magnets, and the first and second movable guides 14 and 1 made of a magnetic material.
The strip-shaped negative electrode 2 and the separator 3 are sandwiched by 6 and magnetically attracted. By setting the magnet weights 17a and 17b in this way, resistance is applied to the strip-shaped negative electrode 2 and the separator 3 at the time of winding in the next step, and they are wound while applying an appropriate tension to them.

Here, these magnet weights 17a, 17
The holding mechanism of b will be described. As shown in FIG. 11 and FIGS. 9 and 10, the magnet weights 17 a, 17
b has two parallel guide rails 31, 31 arranged along the periphery of the indexing table 10, both side surfaces of which correspond to each other, and along the guide rails 31, that is, of the indexing table 10. The index table 10 can be moved back and forth along the peripheral surface in the rotational direction of the index table 10. The guide rail 31 is supported by a support member 32, and is approached to the peripheral surface of the indexing table 10 by a drive mechanism (not shown) connected to the support member 32.
It is possible to move away and move in the lateral direction that is parallel to it. Further, as shown in FIG. 9, the initial position of the preceding magnet weight 17b for the separator (the third
A metal holding metal fitting 33 attached to the indexing table 10 is arranged in the vicinity of the position (where the separator 3 is held at the station), and the magnet weight 17b in the standby state is placed.
However, it is magnetically attracted to the holding metal fitting 33, and is rotated with the rotation of the indexing table 10 while holding a predetermined standby position.

Next, in the process of rotating the working jig set from the fourth station to the fifth station, and further to the sixth station, the winding shafts 18a and 18b rotate integrally with the rotation of the indexing table 10. And the winding shafts 18a and 1
8b, the strip-shaped negative electrode 2 disposed on the upper surface side of one half of the separator 3 and attached to the separator 3 with the adhesive tape 6, and the adhesive tape disposed on the lower surface side of the other half. The strip-shaped positive electrode 1 attached to the separator 3 at 5 is wound around the core shafts 18a and 18b while being pulled out from the fixed guide and the movable guide, respectively.

At this time, the strip-shaped positive electrode 1 set on the first fixed guide 11 is pressed by the first movable guide 14, and one end side of the separator 3 set on the second fixed guide 12 is above it. Since it is held by the second movable guide 16 of the guide groove 11a,
The posture is not disturbed when pulled out from the body, and it can be rolled in without causing wrinkles. In addition, the second movable guide 1
Since the magnet weight 17a is attached to the rear end of the strip-shaped negative electrode 2 set to 6 and the magnet weight 17b is attached to the end of the separator 3 set to the first movable guide 14, Appropriate resistance (load) is applied to the strip-shaped negative electrode 2 and the separator 3 that are pulled out,
It can be rolled up without wrinkles with proper tension applied. Further, the free roller 35 contacts the electrode set wound around the winding shafts 18a and 18b to adjust the outer shape.

In the fifth station, the winding process has progressed to about half, but the proximity sensor 36 is provided at a predetermined position of the fifth station, and the magnet weight 17a,
By detecting the position of 17b, it is possible to detect whether or not the separator 3, the strip negative electrode 2, and the strip positive electrode 1 are normally pulled out from the guide due to the winding and are wound around the core shafts 18a and 18b. ing. If it is determined that the electrode set is not normal, the defective electrode set in the subsequent process is eliminated.

At the stage when the work jig set is indexed at the sixth station, the spiral-shaped electrode set is completely wound by the winding shafts 18a and 18b, and the separator 3
The end of the electrode set 40 is stopped by the adhesive tape 7 at the rear end. At the sixth station, the completed spiral electrode set 40 is taken out, and at this station and the next first station, the working jig set is returned to the initial state.

FIG. 12 shows the details of the operation at the sixth station.
~ Shown in FIG. That is, as shown in FIGS. 12 and 13, the manipulator 41 enters the recess 10a,
The electrode set 40 completed by winding the winding shafts 18a and 18b is gripped and fixed. In that state, the winding shaft 18a
And 18b are reversed by about 90 degrees, and after adjusting (correcting) the center hole of the winding start portion of the electrode set 40 into a shape close to a cylinder (FIG. 14), the core shafts 18a and 18b retreat in the directions away from each other. The electrode set 40 (FIG. 15). Then, the manipulator 41 carries out the electrode set 40 (FIG. 16).

The mechanism for rotating the core shafts 18a and 18b in the forward and reverse directions will be described below. The core shafts 18a and 18b are attached to fixed gears formed in the shape of internal teeth along the vicinity of the peripheral surface of the indexing table 10. The connected rotary gears are engaged with each other, and as the indexing table 10 rotates, the core shafts 18a, 18a
When b revolves, it meshes with both gears to rotate in a predetermined direction. By this rotation, both the strip electrodes 1 and 2 and the separator 3 are wound. That is, the above-described free roller 35, the fixed gear, the rotary gear, and the like constitute a means for winding the separator and both strip electrodes on the winding core.

On the other hand, for reversing the core shafts 18a and 18b for correcting the center hole of the electrode set 40, one end of an L-shaped swing lever 43 is attached to the core shafts 18a and 18b as shown in FIG. The tip of the cylinder rod 45a of the air cylinder 45 can come into contact with the other end of the swing lever 43. The swing lever 43 has one end 43a.
By rotating in a predetermined direction around the
The a and 18b are adapted to rotate in opposite directions. Then, the rotation of the swing lever 43 is performed by the extension of the air cylinder 43. When the air cylinder 45 contracts, the rocking lever 43 returns to its original position due to the elastic restoring force of the torsion spring (which is elastically deformed during the above rotation) attached to the rocking lever 45 (not shown). . That is, the swing lever 43 and the air cylinder 45 constitute the center hole correcting means.

When the above-mentioned processing in the station 6 is completed, the guide rails 31 of the magnet weights 17a and 17b move backward and separate from the guides. Then, the action of magnetic attraction generated between the guide and the guide is released, and the magnet weights 17a and 17b move (fall) in the predetermined direction along the guide rail 31 by their own weight. Therefore, as shown in FIG. 11, both are located at the lower end of the guide rail 31. At this time, the preceding one of the magnet weights 17b is attracted to the holding metal fitting 33, and thereafter, the station 3
Keep its position until. The other magnet weight 17a
Moves relatively rearward along the guide rail 31 as the indexing table 10 rotates, and is finally located at the rearmost end of the guide rail 31.
Prepare for processing in.

Since the strip-shaped positive electrode 1 is formed by using punched metal as a core material and adhering manganese dioxide powder to both surfaces thereof, the core material is not located at the center. That is, it is preferable to be parallel to the plane of the strip-shaped positive electrode 1, but in reality there will be deviation. As a result, there is a bias in the winding, and the winding cannot be done neatly. Therefore, by moving the fine adjustment guide 13 in a predetermined direction, winding can be performed neatly.

The fine adjustment guide 13 is aligned each time a strip-shaped positive electrode made of a different rod is used. That is, once the alignment is done, it is not done while using the same rod.

As described above, the work is continuously performed in each station, and every time the indexing table 10 is divided and rotated once, the completed spiral electrode set 40 is taken out from the sixth station. That is, when the indexing table 10 makes one rotation, the six electrode sets 40 are completed.

[0036]

As described above in detail, in the apparatus of the present invention, a plurality of work jig sets are arranged on the indexing table at equal intervals, and a plurality of work stations are set around the indexing table. Then, the respective sharing steps are carried out in parallel at the respective stations, and the work of forming the cylindrical positive electrode, the negative electrode of the band, and the separator of the belt shape by overlapping and winding them can be automatically carried out in a progressive manner.

In particular, the work jig set is provided with two fixed guides and two movable guides, and the strip positive electrode, the strip negative electrode, and the strip separator, which are materials for the spiral electrode set, are set in their respective dedicated guides. Therefore, when these materials are wound on the core shaft, the respective materials are dragged out from the respective guides in a stable posture, and wrinkles are not generated, and the materials are not spirally displaced and wound.

[Brief description of drawings]

FIG. 1 is a front view showing the overall schematic configuration of an apparatus according to the same embodiment.

FIG. 2 is a state diagram of a work jig set at the first station of the apparatus according to the embodiment of the present invention.

FIG. 3 is a state diagram of a work jig set in the second station.

FIG. 4 is a state diagram of a work jig set at the third station.

FIG. 5 is a state diagram of a work jig set at the fourth station.

FIG. 6 is a state diagram of a work jig set at the fifth station.

FIG. 7 is a state diagram of the work jig set at the sixth station.

8 is a sectional view taken along line AA of FIG.

FIG. 9 is a cross-sectional view showing a state in which a first movable guide is superposed on a first fixed guide in the above-described embodiment apparatus.

FIG. 10 is a cross-sectional view showing a state in which a second movable guide is superposed on a second fixed guide in the above-described embodiment apparatus.

FIG. 11 is a diagram illustrating a holding mechanism for a magnet weight of the apparatus of this embodiment shown in FIG.

FIG. 12 is a first operational process chart of the sixth station of the apparatus according to the same embodiment.

FIG. 13 is a second operation process diagram of the sixth embodiment of the apparatus according to the same embodiment.

FIG. 14 is an operational process diagram No. 3 in the sixth station of the apparatus according to the above embodiment.

FIG. 15 is an operation process chart No. 4 in the sixth station of the apparatus according to the above embodiment.

FIG. 16 is a fifth operation step diagram of the sixth embodiment of the apparatus according to the same.

FIG. 17 is an operation process chart No. 6 in the sixth station of the apparatus according to the above embodiment.

[Explanation of symbols]

1 band-shaped positive electrode 2 band-shaped negative electrode 3 band-shaped separator 4 separator roll 5 adhesive tape 6 adhesive tape 7 adhesive tape 10 indexing table 10a recessed part (rolling work space) 11 first fixed guide 12 second fixed guide 13 fine adjustment guide 14th 1 movable guide 16 2nd movable guide 17a, 17b magnet weight 18a, 18b winding core shaft 19 positive electrode supply handling mechanism (first electrode setting means) 20 separator supply drum (separator setting means) 21 heat wire cutter 25 negative electrode supply mechanism ( Second electrode setting means) 30 Holding jig 35 Free roller 40 Spiral type electrode set 41 Manipulator 43 Swing lever (center hole correcting means) 45 Air cylinder (center hole correcting means)

Claims (6)

[Claims] 1. A pair of first and second fixed guides arranged so as to be continuous with a winding work space sandwiched therebetween, a position overlapping the first fixed guide, and a position separated therefrom. A plurality of work jig sets each having a first movable guide that takes a position, and a second movable guide that takes a position overlapping with the second fixed guide and a position separated from the second fixed guide are arranged at equal intervals on the circumference. An indexing table, which is arranged as a set and is divided and rotated with the interval of the working jig set as one unit, and one strip-shaped electrode on the first fixed guide of the working jig set in an initial state at a certain indexing position. A first electrode setting means for setting, and a process in which the working jig set is divided and rotated in a predetermined indexing position on the downstream side of the first electrode setting means with respect to the rotation direction of the indexing table, One of the strip electrodes is Separator setting means for setting a long strip-shaped separator so as to extend over the first movable guide and the second fixed guide that are stacked on the first fixed guide that has been set, and further the separator setting means. By a second electrode setting means arranged at a predetermined indexing position on the downstream side and setting another strip-shaped electrode on a second movable guide stacked on the second fixed guide, and by the second electrode setting means. Means for winding the separator and both strip-shaped electrodes around a core rotating in the winding work space in a process in which the processed work jig set is rotated in a divided manner, and the work jig set processed by the winding means And a means for taking out the spirally-shaped electrode set from the winding work space, and a strip-shaped electrode for a battery and a separator. Apparatus for molding involving the spirally. 2. A magnet weight having a position overlapping with the first and second movable guides and a position separated therefrom, and the magnet weight is allowed to move in a stable state along the guide direction of the movable guide. And a predetermined position of the first and second movable guides is made of a magnetic material, and the magnetic separator attracts between the magnet weight and the magnetic material. The strip-shaped battery cell according to claim 1, wherein the other strip-shaped electrode is sandwiched between the magnet weight and each of the movable guides to apply a predetermined winding load during the winding process. A device that spirally wraps the electrode and separator to form. 3. The strip-shaped electrode for a battery according to claim 2, further comprising detection means for detecting the position of the magnet weight during the winding process so that whether the winding state is appropriate can be determined. A device that winds and separators into a spiral shape. 4. The fixed and movable guides on which the negative electrode side of the two strip electrodes and the strip separator are set are formed with a large number of through holes on their setting surfaces, and the through holes are sucked. 4. A negative pressure generated by the suction means connected to the means so that the guide surface is sucked and held on the set surface of each guide.
An apparatus for spirally winding and forming a strip-shaped electrode for battery and a separator as described in 1. 5. The strip electrode for a battery according to claim 2, further comprising center hole correcting means for rotating the winding core in a direction opposite to the winding direction. A device that winds and separators into a spiral shape. 6. A fine adjustment guide is arranged at the tip of the predetermined guide for setting the positive electrode-side strip electrode of the two strip electrodes so as to be movable in a direction substantially orthogonal to the pull-out direction thereof. Any one of claims 2 to 4
An apparatus for spirally winding and forming a strip-shaped electrode for a battery and a separator according to the item.