JP2002110148A - Battery manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery manufacturing device where the productivity of a battery is improved while the alignment precision of an electrode sheet is maintained. SOLUTION: When welding an electrode sheet 1 to a tab Tb, an initial correction sensor group 4A firstly detects the position of a boundary part K of an active material coated part 21. A lift roller 5b falls at a high speed according to the detection result so that the boundary part K is moved fast up to a front F1 of a final correction sensor 4B. Then the lift roller 5b falls at a low speed, and moves the boundary part K at a low speed by a prescribed distance after the final correction sensor 4B detects the boundary part K at a detection position F2, so that an electrode sheet 1 is stopped at a tab welding position F3 with high precision.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery manufacturing apparatus for a secondary battery or the like, and more particularly to a battery manufacturing apparatus for positioning an electrode sheet and mounting a tab, a protective tape, or the like at a predetermined position on the electrode sheet.

[0002]

2. Description of the Related Art For example, a secondary battery such as a lithium ion battery includes a positive electrode current collector obtained by applying a positive electrode active material as an electrode material to a metal current collector and a negative electrode current collector obtained by applying a negative electrode active material. Have. Each current collector is wound in a state of being stacked with a separator (insulating material) interposed therebetween. A battery manufacturing apparatus (winding machine) for forming the current collector is disclosed in JP-A-9-18073.
Japanese Unexamined Patent Application Publication No. 5 (1999) -205 is known.
For example, as shown in FIG. 7, in the battery manufacturing apparatus 70, an electrode sheet (positive electrode sheet) in which a positive electrode active material is applied to a belt-shaped metal sheet at regular intervals, and an electrode sheet (in which a negative electrode active material is applied similarly) The negative electrode sheet) and the strip-shaped separator sheet are conveyed to the sheet winding section 71 by the respective conveying mechanisms, and are wound so that the sheets overlap each other in the sheet winding section 71.

In the transport process, a tab is welded to each electrode sheet, and a protective tape for protecting the tab is attached. For example, in the electrode sheet transport mechanism 73 for transporting the negative electrode sheet, the tab is welded to the electrode sheet 75 sent out from the electrode sheet roll 74 by the tab welding device 76, and the tape is protected by the tape attaching device 77. Is affixed.

Here, the tab welding operation in the tab welding device 76 is performed by temporarily stopping the active material non-applied portion at the tab welding position such that the tab is welded to the active material non-applied portion on the electrode sheet 75. Done. The welding position of the tab is preset based on the pattern of the active material applied to the electrode sheet 75, but it is difficult to always exactly match the preset welding position of the tab with the actual application pattern,
A process for appropriately correcting the stop position of the active material non-applied portion is required.

[0005] This correction processing is performed by adjusting the transport amount of the electrode sheet 75 intermittently transported by the feed roller 72 provided on the upstream side of the sheet winding section 71 by driving the drive roller 80 up and down. Done. For this reason,
An upstream side of the tab welding device 76 is provided with a sensor 78 for detecting a boundary portion between the active material application portion and the non-application portion, which serves as a reference for the drive roller 80 correcting the transport amount of the electrode sheet 75. When the drive roller 80 moves down at a low speed, the electrode sheet 75 on the upstream side is conveyed at a low speed. Thereafter, when the sensor 78 detects the boundary portion, the drive roller 80 further descends by a certain amount, and conveys the electrode sheet 75 by a certain amount based on the boundary portion detected by the sensor 78, and a predetermined amount of the active material uncoated portion is determined. Position so that the position is at the welding position of the tab.

[0006] Positioning correction processing for attaching a protective tape is performed in a similar manner. Therefore, a sensor 79 for detecting the position of the welded tab is provided on the upstream side of the tape attaching device 77, and the driving roller 80
Based on the detection result of No. 9, the welded tab is positioned at the tape attaching position.

[0007] Here, the welding position of the tab is very important because it affects the performance of a commercialized battery, and the attaching position of the protective tape is very important to surely protect the tab. Therefore, in order to improve the mounting position accuracy of the tab or the protective tape to a certain level or more, the sensors 78 and 7 are used.
Since the feed amount of the electrode sheet 75 after the detection of the boundary portion by the step 9 is required to be highly accurate, the correction processing by lowering the drive roller 80 is performed at a low speed.

[0008]

However, in the above-described battery manufacturing apparatus 70, when the electrode sheet 75 is conveyed by the feed roller 72, the position of the boundary portion is greatly shifted from the detection position of the sensor 78. In such a case, the time until the boundary portion can be detected by the sensor 78 becomes longer, and the productivity of the battery decreases.

On the other hand, in order to increase the productivity, the driving roller 8
If the correction process based on the decrease of 0 is performed at high speed, the electrode sheet 7 after the detection of the boundary portion by the sensors 78 and 79 will
5, the precision of the feeding amount cannot be ensured, and the precision of the mounting position of the tab or the protective tape is reduced, which causes inconvenience such that the expected performance cannot be obtained.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and has as one of its main objects to provide a battery manufacturing apparatus capable of improving the productivity of a battery while maintaining the positioning accuracy of an electrode sheet. I have one.

[0011]

Means for Solving the Problems and Effects of the Invention Means effective to achieve the above object will be described below. The operation and the like will be described as necessary.

Means 1. In the process of transporting the electrode sheet on which the electrode material is applied at regular intervals, a predetermined portion of the electrode sheet is positioned at a predetermined position, and is transported by a predetermined transport mechanism in a battery manufacturing apparatus for mounting a predetermined member on the electrode sheet. A plurality of detection means for detecting a predetermined portion of the electrode sheet, and a conveyance amount control means for controlling a conveyance amount of the electrode sheet according to a detection result of each of the detection means, wherein the conveyance amount control means comprises: A battery manufacturing apparatus, wherein a traveling position of the electrode sheet is corrected stepwise based on a detection result of each detecting means, and the predetermined portion is positioned at the predetermined position.

According to the above-mentioned means 1, the running position of the electrode sheet is corrected stepwise based on the detection results of the plurality of detecting means, and the predetermined portion of the electrode sheet is positioned at the predetermined position. For this reason, among the detection results of the plurality of detection units, the detection result of the predetermined detection unit is used for high-speed processing, and the detection result of another predetermined detection unit is used for high-precision processing, The productivity of the battery can be improved while maintaining the positioning accuracy of the electrode sheet.

Means 2. In the process of transporting the electrode sheet on which the electrode material is applied at regular intervals, a predetermined portion of the electrode sheet is positioned at a predetermined position, and is transported by a predetermined transport mechanism in a battery manufacturing apparatus for mounting a predetermined member on the electrode sheet. A first detection unit and a second detection unit that detect a predetermined portion of the electrode sheet, and a conveyance amount control unit that controls a conveyance amount of the electrode sheet according to a detection result of each of the detection units. The conveyance amount control means corrects the traveling position of the electrode sheet by adjusting the conveyance amount of the electrode sheet according to the detection result of the first detection means,
A battery manufacturing apparatus for positioning the predetermined portion at the predetermined position by transporting the electrode sheet by a predetermined amount based on a detection result of the detecting means.

According to the means (2), before the second detecting means detects a predetermined portion, the traveling position of the electrode sheet in the transport direction is corrected according to the detection result of the first detecting means,
A predetermined portion of the electrode sheet is positioned at a predetermined position based on the detection result of the second detection means. For this reason, the detection result of the first detection unit is used for high-speed processing, and the detection result of the second detection unit is used for high-precision processing. Can be improved in productivity.

Means 3. In the process of transporting the electrode sheet on which the electrode material is applied at regular intervals, a predetermined portion of the electrode sheet is positioned at a predetermined position, and is transported by a predetermined transport mechanism in a battery manufacturing apparatus for mounting a predetermined member on the electrode sheet. A first detection unit and a second detection unit that detect a predetermined portion of the electrode sheet, and a conveyance amount control unit that controls a conveyance amount of the electrode sheet according to a detection result of each of the detection units. The transport amount control unit, after correcting the traveling position of the electrode sheet based on the detection result of the first detection unit so that the second detection unit can detect the travel position,
A battery manufacturing apparatus, wherein the predetermined portion is positioned at the predetermined position by transporting the electrode sheet by a predetermined amount based on a detection result of the second detection unit.

According to the means (3), the traveling position of the electrode sheet is corrected in accordance with the detection result of the first detecting means so that the second detecting means can detect a predetermined portion. Therefore, the detection result of the first detection unit is used for high-speed processing, and the detection result of the second detection unit is used for high-precision processing, thereby maintaining the positioning accuracy of the electrode sheet while maintaining the battery accuracy. Can be improved in productivity.

Means 4. In the means 2 or 3, the transport amount control means adjusts the transport speed of the electrode sheet when performing correction based on the detection result of the first detection means, the electrode sheet after the correction is performed. Wherein the traveling speed of the electrode sheet is corrected to be faster than the transport speed of the battery.

According to the means 4, the electrode sheet can be conveyed at a relatively high speed in a certain section before the second detecting means performs the detecting process. As a result, the positioning accuracy of the electrode sheet can be improved, and the productivity can be improved.

Means 5 In any one of the means 2 to 4, the first detecting means is composed of a plurality of sensors arranged at predetermined intervals along a transport direction of the electrode sheet, and the first detecting means is Based on the detection result of each sensor, the position of a predetermined portion of the electrode sheet is specified in a stepwise manner, and the transport amount control means controls the electrode sheet at a predetermined transport amount according to the detection result of the first detection means. A battery manufacturing apparatus for transporting a battery.

According to the means 5, the first detecting means comprises:
Consists of a plurality of sensors arranged at predetermined intervals along the transport direction of the electrode sheet, based on the detection results of each sensor,
The position of a predetermined portion of the electrode sheet is specified step by step. That is, the first detecting means specifies the position of the predetermined portion from the position of the sensor that has detected the predetermined portion, and corrects the transport amount of the electrode sheet by a predetermined correction amount corresponding to the specified position. In this way, simple correction can be performed without strictly specifying the position of the predetermined part. Therefore, the correction can be performed even when the transport speed of the electrode sheet is increased in the detection section of the first detection means, and as a result, the positioning accuracy of the electrode sheet can be improved and the productivity can be improved.

Means 6. In any one of the means 2 to 4, the first detecting means may include a plurality of sensors capable of detecting an electrode material application portion to which the electrode material is applied, at a predetermined interval along a transport direction of the electrode sheet. In the configuration as provided, the first detection means, based on the detection results of the sensors, the electrode material application portion and the electrode non-application portion where the electrode material is not applied step by step A battery manufacturing apparatus, wherein the position of a boundary portion of the electrode sheet is specified, and the transport amount control means transports the electrode sheet by a predetermined transport amount according to the number of the sensors that have detected the electrode material application section. .

According to the means 6, the first detecting means comprises:
Consisting of a plurality of sensors arranged at predetermined intervals along the transport direction of the electrode sheet, the position of the boundary portion of the electrode sheet is specified step by step from the number of sensors that detected the electrode material application portion, and the specified The transport amount of the electrode sheet is corrected by a predetermined correction amount corresponding to the position. In this way, simple correction can be performed without strictly specifying the position of the predetermined part. Therefore, the correction can be performed even when the transport speed of the electrode sheet is increased in the detection section of the first detection means, and as a result, the positioning accuracy of the electrode sheet can be improved and the productivity can be improved.

Means 7. In the means 5 or 6, the transport amount control means includes a drive roller for reciprocatingly driving the electrode sheet in a predetermined direction intersecting the transport direction of the electrode sheet to bypass the electrode sheet, and a predetermined roller corresponding to a detection result of each of the sensors. A battery manufacturing apparatus, wherein the driving amount of the electrode roller is driven by the driving amount to change the detour amount and control the transport amount of the electrode sheet.

According to the above means 7, the driving roller is driven by a predetermined drive amount corresponding to the detection result of each sensor, so that the transport amount of the electrode sheet is controlled by a predetermined correction amount corresponding to the detection result of each sensor. Is corrected. If you do this,
The transport of the electrode sheet when performing the correction can be controlled relatively easily. Therefore, the correction can be performed even when the transport speed of the electrode sheet is increased in the detection section of the first detection means, and as a result, the positioning accuracy of the electrode sheet can be improved and the productivity can be improved.

Means 8. In any one of the means 1 to 7, the predetermined member is a tab, and a tab attaching means for attaching the tab to the electrode sheet is provided. The transport amount controlling means comprises an electrode material to which the electrode material is not applied. A battery manufacturing apparatus, wherein a predetermined position of an uncoated portion is positioned at a mounting position of the tab.

According to the means 8, the positioning accuracy of the mounting position of the tab can be maintained, and the expected product performance can be secured.

Means 9. In any one of the means 1 to 7, the predetermined member is a tab and a protective tape, and includes a tab attaching means for attaching a tab to the electrode sheet, and the transport amount controlling means is provided with the electrode material. A predetermined position of the electrode material non-applied portion is positioned at the mounting position of the tab, and further provided is a tape affixing means for affixing a protective tape for protecting the tab, wherein the transport amount controlling means is attached. A battery manufacturing apparatus, wherein a tab is positioned at a position where the protective tape is attached.

Means 10. In the process of transporting the electrode sheet on which the electrode material is applied at regular intervals, a predetermined portion of the electrode sheet is positioned at a predetermined position, and is transported by a predetermined transport mechanism in a battery manufacturing apparatus for mounting a predetermined member on the electrode sheet. Detecting means for detecting the correction amount of the transport error of the electrode sheet, and transport amount control means for correcting the transport amount of the electrode sheet based on the detection result of the detecting means, wherein the transport amount control means comprises: When performing the first positioning, correction is performed using the first correction amount detected by the detection unit, and when performing the second positioning, the second correction amount calculated based on the first correction amount A battery manufacturing apparatus, wherein the correction is performed by:

According to the means 10, since it is not necessary to detect a transport error of the electrode sheet when performing the second positioning, it is possible to save time and effort when performing the second positioning. As a result, productivity can be improved. In addition, the detection configuration for performing the second positioning can be simplified.

Means 11 In the means 10, the detecting means is constituted by a plurality of sensors arranged at a predetermined interval along a conveying direction of the electrode sheet, and based on a detection result of each of the sensors, a correction amount of the electrode sheet in a stepwise manner. A battery manufacturing apparatus characterized by detecting the following.

According to the above means 11, the detecting means is composed of a plurality of sensors arranged at predetermined intervals along the direction of transport of the electrode sheet, and based on the detection results of each sensor, the detecting means is stepwise. The correction amount of the electrode sheet is detected. In this way, simple correction can be performed without strictly detecting the transport error of the electrode sheet. Therefore, no problem occurs even if the transport speed of the electrode sheet is increased in the detection section of the detection means. As a result, the configuration of the detection means is simplified, and the productivity can be improved.

Means 12. In the means 10, the detection means may include a plurality of sensors capable of detecting a boundary portion between the electrode material application portion and the electrode non-application portion on which the electrode material is not applied, and a predetermined number of sensors along the transport direction of the electrode sheet. A battery manufacturing apparatus, which is configured to be arranged at intervals and detects a predetermined correction amount according to the number of sensors that have detected the boundary portion.

According to the above means 12, the detecting means detects a predetermined correction amount corresponding to the number of the sensors which have detected the boundary portion. Therefore, even without detecting a strict correction amount,
Simple correction can be performed with a predetermined correction amount corresponding to the number of sensors. As a result, the correction can be performed even if the transport speed of the electrode sheet is increased in the detection section, and the productivity can be improved.

Means 13 In any one of the means 10 to 12, the transport amount control means may include a distance from a predetermined reference point to a position where the first positioning is performed, and a distance from the predetermined reference point to a position where the second positioning is performed. The battery manufacturing apparatus, wherein the second correction amount is calculated from the ratio of:

According to the means 13, the second correction amount is calculated from the ratio of the distance between the two positions to be positioned from the reference point and the first correction amount detected in advance. Therefore, the second correction amount can be calculated by a relatively simple calculation process, so that the calculation process can be simplified.

Means 14. In any one of the means 10 to 12, the transport amount control means may include: a number of the electrode material application portions between a predetermined reference point and a position where the first positioning is performed; A second correction amount is calculated from a ratio of the number of the electrode material application sections to a position where the positioning is performed.

According to the means 14, the number of the electrode material application portions between the reference point and the position where the first positioning is performed, and the number of the electrode material coating portions between the reference point and the position where the second positioning is performed. The second correction amount is calculated from the ratio of the number of the electrode material application sections to the number of the electrode material application portions and the first correction amount detected in advance. Therefore, the second correction amount can be calculated by a relatively simple calculation process, so that the calculation process can be simplified.

Means 15. In any one of the means 10 to 14, the predetermined member is a tab, and the apparatus further comprises a tab attaching means for attaching the tab to the electrode sheet. As a positioning, a predetermined position of an electrode material non-applied portion where the electrode material is not applied is positioned at a mounting position of the tab.

According to the means 15, the positioning accuracy of the mounting position of the tab can be maintained, and the expected product performance can be ensured.

Means 16. Means 15 includes tape attaching means for attaching a protective tape as the predetermined member for protecting the tab to the electrode sheet,
The battery manufacturing apparatus according to claim 1, wherein the transport amount control means positions the attached tab at a mounting position of the protection tape as the second positioning before mounting the protection tape.

[0042]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment]
The embodiment will be described with reference to FIGS.

In the present embodiment, as shown in FIG. 3, the work of attaching a tab or the like to the conveyed electrode sheet is performed by an electrode sheet conveying mechanism incorporated in the battery manufacturing apparatus 30. First, an outline of the battery manufacturing apparatus 30 will be briefly described. The battery manufacturing apparatus 30 includes an electrode sheet transport mechanism 31 for transporting a negative electrode sheet, an electrode sheet transport mechanism 32 for transporting a positive electrode sheet, and a separator sheet transport for transporting a separator sheet. Each of the sheets transported by each of the sheet transport mechanisms 31 to 34 is provided with a mechanism 33 or 34.
The sheets are wound so as to overlap each other in the sheet winding section 35, whereby a battery such as a lithium ion secondary battery is manufactured.

As shown in FIG. 2, an active material 21 as an electrode material is applied in advance to the positive electrode sheet and the negative electrode sheet 1 as electrode sheets conveyed by the respective electrode sheet conveying mechanisms 31 and 32 at regular intervals. Metal sheet 20 is used. Specifically, for example, an aluminum foil sheet is used as the positive electrode sheet, and LiC
A positive electrode active material mainly composed of oO2 is applied. As the negative electrode sheet, for example, a copper foil sheet is used, and a negative electrode active material mainly composed of LiCoVO4 is applied on both surfaces thereof at regular intervals. Further, a tab Tb is welded to a predetermined position of the active material non-applied portion 22 as described later, and a protective tape Tp is attached on the tab.

Here, a description will be given of an electrode sheet transport mechanism for mounting the tabs Tb and the like by taking the electrode sheet transport mechanism 31 corresponding to the negative electrode sheet 1 as an example. In addition,
The electrode sheet transport mechanism 32 has the same configuration as the electrode sheet transport mechanism 31 and will not be described. Further, the negative electrode sheet 1 is hereinafter appropriately referred to as an electrode sheet 1.

In the electrode sheet transport mechanism 31 according to the present embodiment, the electrode sheet 1 is fed downstream by a predetermined amount by a pair of feed rollers 11 provided on the upstream side of the sheet take-up section 35, so that the electrode sheet 1 is fed. Sheet roll 2
From a predetermined amount.

The electrode sheet 1 sent from the electrode sheet roll 2 is first sent to the pattern detecting section 4 via the traveling roller 3a and the tension roller 3b. The pattern detection unit 4 includes an active material application unit 21 on the electrode sheet 1.
The transport position of the electrode sheet 1 is detected from the application pattern of the active material uncoated portion 22 and the active material uncoated portion 22. Pattern detector 4
Is constituted by a sensor for detecting a boundary portion K between the active material application portion 21 and the active material non-application portion 22 on the electrode sheet 1. More specifically, an initial correction sensor group 4A that detects the feed amount (initial correction amount) of the electrode sheet 1 by detecting the position of the boundary region K, and the position of the boundary region K after the initial correction has been performed. And a final correction sensor 4B for detecting the

As shown in FIG. 1, the initial correction sensor group 4A in this embodiment includes five initial correction sensors 4A.
The sensors 4Aa to 4Ae are arranged at predetermined intervals along the transport direction of the electrode sheet 1. In the present embodiment, these sensors 4Aa to 4Ae are arranged at equal intervals.

Here, each of the sensors 4Aa to 4Ae is a reflection type sensor for detecting a boundary portion K of a surface having a different material between the active material coated portion 21 as the electrode material and the active material non-coated portion 22 as the surface of the metal sheet. And the sensors 4Aa to 4Ae
When the active material application section 21 is sent below the sensor, the sensors 4Aa to 4Ae are turned on, and the boundary portion K is detected. That is, depending on which of the sensors 4Aa to 4Ae has been turned on, the initial correction amount can be detected in stages for the entire initial correction sensor group 4A. For example, the sensor 4Aa and the sensor 4Ab enter an on state in which the boundary portion K is detected, and the sensors 4Ac to 4Ae do not detect the boundary portion K.
In the state, the initial correction amount corresponds to two sensors.

A final correction sensor 4B is disposed downstream of the initial correction sensor group 4A so as to be adjacent to the initial correction sensor group 4A. Similar to the sensors 4Aa to 4Ae, the final correction sensor 4B detects a boundary portion K of a different surface between the active material application portion 21 as the electrode material and the active material non-application portion 22 as the surface of the metal sheet. Things.
The pattern detection unit 4 is electrically connected to a conveyance amount control mechanism 5 as a conveyance amount control unit, and the detection results of the initial correction sensor group 4A and the final correction sensor 4B are transmitted to the conveyance amount control mechanism 5. Is output.

On the downstream side of the pattern detecting section 4, a tab welding device 6 is provided so as to be close to the tab detecting device. The tab welding device 6 is configured to apply a tab Tb to the active material
Is to be welded. The tab T in the tab welding device 6
After b is welded, the electrode sheet 1 is sent to the tab detecting section 7.

The tab detecting section 7 detects the transport position of the electrode sheet 1 from the position of the welded tab Tb.
The tab detector 7 detects an initial correction amount of the transport position of the electrode sheet 1 by detecting the position of the tab Tb, and a tab Tb after the initial correction is performed.
And a final correction sensor 7B for detecting the position of

More specifically, an initial correction sensor group 7A for detecting the feed amount (initial correction amount) of the electrode sheet 1 by detecting the position of the tab Tb, and the position of the tab Tb after the initial correction has been performed. Final correction sensor 7 for detecting position
B.

The initial correction sensor group 7A according to the present embodiment includes five initial correction sensors 7Aa to 7Ae, similarly to the pattern detection unit 4, and each of the sensors 7Aa to 7A.
e are provided at predetermined intervals along the transport direction of the electrode sheet 1. Here, when the tab Tb is sent below the sensors 7Aa to 7Ae, the sensors 7Aa to 7Ae are turned on, and the tab Tb is detected. Therefore, similarly to the case where the initial correction sensor group 4A of the pattern detection section 4 detects the initial correction amount, the initial correction sensor 7A as a whole can detect the initial correction amount stepwise.

Downstream of the initial correction sensor group 7A, a final correction sensor 7B is arranged adjacent to the initial correction sensor group 7A. The final correction sensor 7B detects the tab Tb, similarly to the sensors 7Aa to 7Ae. The tab detecting section 7 is electrically connected to the transport amount control mechanism 5 as the transport amount control means, and the detection results of the initial correction sensor group 7A and the final correction sensor 7B are transmitted to the transport amount control mechanism 5. Is output.

A tape sticking device 8 is provided so as to be close to the downstream side of the tab detecting section 7. Tape sticking device 8
Is a protection tape T for protecting the welded tab Tb.
p is affixed.

On the downstream side of the tape attaching device 8, there is provided a transport amount control mechanism 5 for adjusting the transport amount of the electrode sheet 1 based on the detection results of the pattern detecting section 4 and the tab detecting section 7. The transport amount control mechanism 5 adjusts the transport amount of the electrode sheet 1, corrects the transport position of the electrode sheet 1 based on the detection result of each initial correction sensor group, and adjusts the detection result of each final correction sensor. The active material uncoated portion 22 is positioned at the welding position of the tab Tb based on the
b is positioned at the position where the protective tape Tp is attached.

The transport amount control mechanism 5 includes a control unit 5a for performing various controls, a servo motor (or a pulse motor) not shown controlled by the control unit 5a, and a predetermined direction by the servo motor. And an elevating roller 5b that is driven to elevate in the direction. Elevating roller 5b
Is connected to a servomotor via a drive transmission mechanism (not shown), and is driven to move up and down in the vertical direction by rotating the servomotor. A pair of traveling rollers 9 is provided above the elevating roller 5b, and the electrode sheet 1 is hung on the elevating roller 5b via the traveling roller 9. The elevating roller 5b freely rotates as the electrode sheet 1 travels.

Finally, the electrode sheet 1 to which the tab Tb and the protective tape Tp are attached is conveyed to the sheet winding section 35 via the traveling roller 10 and the feed roller 11. Further, a cutter 12 that cuts the electrode sheet 1 at a predetermined length necessary for manufacturing one battery is disposed between the feed roller 11 and the sheet winding section 35. One of the applied electrode sheets 1 is taken up by the sheet take-up section 35, and the leading end of the electrode sheet 1 on the side of the transport mechanism 31 is held while being sandwiched by the pair of feed rollers 11. At this time, if the elevating roller 5b of the transport amount control mechanism 5 moves down, the electrode sheet 1 will be sent in the transport direction at each part before the transport amount control mechanism 5. When the electrode sheet 1 is sent downstream by the feed roller 11, the lifting roller 5
b rises to a predetermined reference position, that is, a solid line position in FIG.

The process of positioning the tab Tb and the protective tape Tp on the electrode sheet 1 performed in the electrode sheet transport mechanism 31 incorporated in the battery manufacturing apparatus 30 configured as described above is performed when the tab Tb is attached. Will be described below with reference to the flowchart of FIG. In the electrode sheet transport mechanism 31, each time the electrode sheet 1 is fed by the feed roller 11, a new boundary portion K is transported below the initial correction sensor group 4A.

First, in step S1, the position of the boundary portion K between the active material application portion 21 and the active material non-application portion 22 of the electrode sheet 1 is detected by the initial correction sensor group 4A.
Specifically, when the boundary part K is arranged below each of the sensors 4Aa to 4Ae, each of the sensors 4Aa to 4Ae in the section where the boundary part K has passed is turned on, and each of the sections where the boundary part K has not passed. The sensors 4Aa to 4Ae maintain the off state. For example, when the boundary part K is between the sensor 4Ab and the sensor 4Ac, the sensors 4Aa and 4A
b turns on and the sensors 4Ac to 4Ae
ff state. And these sensors 4Aa to 4A
The detection result by e is output to the transport amount control mechanism 5.

In step S2, the transport amount control mechanism 5
The control unit 5a lowers the elevating roller 5b at a high speed by a predetermined amount according to the detection result of the initial correction sensor group 4A in a state where the feeding operation of the electrode sheet 1 by the feeding roller 11 is stopped. For example, as shown in FIG.
When only Aa is in the on state, the control unit 5a lowers the elevating roller 5b to the lowering position 5 at a high speed,
The boundary portion K is moved at a high speed to near the position F1 before the final correction sensor 4B. Also, for example, the sensors 4Aa to 4A
When c is in the on state, the controller 5a moves the boundary portion K at a high speed to near the position F1 before the final correction sensor 4B by lowering the elevating roller 5b to the lowering position 3 at a high speed. Also, for example, the sensors 4Aa to 4Ae
Are turned on, the elevating roller 5b is kept stopped at the reference position 1. As described above, the control unit 5a detects the boundary portion K and sets each of the sensors 4 turned on.
The elevating roller 5b is lowered at a high speed by a predetermined amount corresponding to Aa to 4Ae, and the boundary portion K is moved at a high speed to a position near the front position F1 of the final correction sensor 4B. This step S2
In the position correction in the above, the boundary portion K is increased to near the near position F1.
Therefore, the position accuracy is left to the correction at a later stage, and high-speed processing is performed with emphasis on productivity.

In step S3, the controller 5a further lowers the elevating roller 5b at a lower speed than the lowering speed in step S2, and at a low speed so that the final correction sensor 4B can easily detect the boundary portion K. Transport,
The position of the boundary part K is moved. In step S3, the moving speed of the boundary region K is relatively reduced in order to secure the positional accuracy.

In step S4, the final correction sensor 4B
When the controller detects the boundary portion K at the detection position F2, the controller 5a lowers the lifting roller 5b at a low speed by a predetermined amount. By doing so, the control unit 5a
Transports the electrode sheet 1 by a predetermined amount, and removes the active material-uncoated portion 2
1 is stopped in a state where the predetermined position on the tab 1 is accurately aligned with the tab welding position F3. In the stopped state, the tab welding device 6 welds the tab Tb to the active material non-applied portion 21.

When the welding of the tab Tb is completed, the feeding operation is performed by the feeding roller 11, and thereafter, the processes of Steps S1 to S4 are repeated for manufacturing the next battery.

The process of positioning the mounting position of the protective tape Tp is the same as the process of positioning the welding position of the tab Tb, and a detailed description thereof will be omitted.

As is apparent from the above description, according to the battery manufacturing apparatus 30 of this embodiment, the electrode sheet 1 for attaching the tab Tb and the protective tape Tp is provided.
In the positioning process, the correction process of the transport position of the electrode sheet 1 is divided into two stages of an initial correction and a final correction. In the initial correction, a high-speed correction is performed, and in the final correction, a highly accurate Correction is performed.
Therefore, even if the variation of the boundary portion K is large, the tab Tb
The position correction of the electrode sheet 1 to the welding position and the sticking position of the protection sheet Tp can be performed at high speed and with high accuracy. As a result, a battery having the expected performance can be efficiently produced.

Further, since the detecting section 4A for detecting the initial correction amount has a structure in which only a plurality of sensors 4Aa to 4Ae are arranged in series, the structure can be simplified.
Moreover, since the elevating roller 5b is lowered by an amount corresponding to the number of sensors that are turned on, the control unit 5a
Is extremely simple, and as a result, a rise in equipment costs of the battery manufacturing apparatus 30 can be suppressed.

In the embodiment described above, for example, a part of the configuration can be appropriately changed and implemented as follows. Of course, other modifications not illustrated below are naturally possible.

For example, in the present embodiment, the transport of the electrode sheet 1 by the transport amount control mechanism
This is performed by moving b. However, the electrode sheet 1 may be sandwiched between a pair of rollers and transported by rotating the rollers. At this time, the stepwise conveyance of the electrode sheet 1 is performed, for example, by controlling the rotation of a servomotor.

[Second Embodiment] Hereinafter, a second embodiment will be described with reference to FIGS.

In the present embodiment, as shown in FIG. 5, the work of attaching a tab or the like to the conveyed electrode sheet is performed by an electrode sheet conveying mechanism incorporated in the battery manufacturing apparatus 40. First, the outline of the battery manufacturing apparatus 40 will be briefly described. The battery manufacturing apparatus 40 includes an electrode sheet transport mechanism 41 for transporting a negative electrode sheet, an electrode sheet transport mechanism 42 for transporting a positive electrode sheet, and a separator sheet transport mechanism for transporting a separator sheet. Each of the sheets transported by each of the sheet transport mechanisms 41 to 44 includes a mechanism 43 or 44.
The sheets are wound so as to overlap each other in the sheet winding section 45, whereby a battery such as a lithium ion secondary battery is manufactured.

The positive electrode sheet or the negative electrode sheet as the electrode sheet conveyed by each of the electrode sheet conveying mechanisms 41 and 42 is the same as the electrode sheet 1 in the first embodiment. That is, as the electrode sheet 1, a metal sheet 20 to which an active material 21 as an electrode material is applied in advance at regular intervals is used. Also, as in the first embodiment,
A tab Tb is welded to the active material non-applied portion 22, and a protective tape Tp is attached on the tab Tb (see FIG. 2).

Here, the active material application section 2 on the electrode sheet 1
The error in the length of the coating pattern between the electrode sheet 1 and the active material non-coated portion 22 tends to be constant for each electrode sheet roll. For example,
There is a tendency that the dimensions of the active material application part 21 and the active material non-application part 22 are slightly longer than expected. Such a certain tendency is considered to occur depending on the environment at the site when the active material 21 is applied. Further, even with the same electrode sheet roll, the winding start and the winding end of the electrode sheet are slightly different, and the error appears in the same tendency. Therefore, in the present embodiment, focusing on the fact that such an error has a certain tendency, it is intended to improve the productivity of the battery and increase the positioning accuracy of the tab Tb and the protection tape Tp while simplifying the configuration. Is what you do.

Now, an electrode sheet transport mechanism in which the work of attaching the tab Tb and the protective tape Tp is performed will be described using the electrode sheet transport mechanism 41 as an example. Note that the electrode sheet transport mechanism 42 has the same configuration as the electrode sheet transport mechanism 41, and a description thereof will be omitted. Further, the negative electrode sheet is hereinafter appropriately referred to as an electrode sheet 1.

In the electrode sheet transport mechanism 41 according to the present embodiment, the electrode sheet 1 is fed downstream by a predetermined amount by a pair of feed rollers 61 provided on the upstream side of the sheet winding section 45, so that the electrode sheet 1 is fed. Sheet roll 5
2 and a predetermined amount is sent out.

The electrode sheet 1 sent from the electrode sheet roll 52 is first sent to the pattern detecting section 54 via the traveling roller 53a and the tension roller 53b.
The pattern detecting section 54 detects the transport position of the electrode sheet 1 from the application pattern of the active material application section 21 and the active material non-application section 22 on the electrode sheet 1. The pattern detection section 54 is configured by a sensor that detects a boundary portion K between the active material application section 21 and the active material non-application section 22 on the electrode sheet 1. Specifically, an initial correction sensor group 54A that detects the feed amount (initial correction amount) of the electrode sheet 1 by detecting the position of the boundary portion K, and the position of the boundary portion K after the initial correction is performed And a final correction sensor 54B for detecting the The initial correction sensor group 54A according to the present embodiment has the same configuration as the initial correction sensor group 4A according to the first embodiment, and a detailed description thereof will be omitted.

Further, a final correction sensor 54B is arranged downstream of the initial correction sensor group 54A so as to be adjacent to the initial correction sensor group 54A. Similar to the sensors of the initial correction sensor group 54A, the final correction sensor 54B is a boundary between different surfaces of the active material application portion 21 as the electrode material and the active material non-application portion 22 as the surface of the metal sheet. The part K is detected. The pattern detection unit 54 is electrically connected to a transport amount control mechanism 55 as a transport amount control unit, and the detection result of the initial correction sensor group 54A and the final correction sensor 54B to the transport amount control mechanism 55. Is output.

A tab welding device 56 is provided downstream of the pattern detecting section 54 so as to be close to it. The tab welding device 56 is for welding the tab Tb to the active material non-applied portion 22 on the electrode sheet 1. After the tab Tb is welded by the tab welding device 56, the electrode sheet 1 is sent to a position below the tab detection sensor 57.

The tab detecting sensor 57 detects the position of the tab Tb after the initial correction described later has been performed. The tab detection sensor 57 is electrically connected to a transport amount control mechanism 55 as a transport amount control unit, and outputs a detection result to the transport amount control mechanism 55.

A tape sticking device 58 is provided so as to be close to the downstream side of the tab detection sensor 57. The tape sticking device 58 sticks a protection tape Tp for protecting the welded tab Tb.

A transport amount control mechanism 55 that adjusts the transport amount of the electrode sheet 1 based on the detection results of the pattern detection section 54 and the tab detection sensor 57 is provided downstream of the tape application device 58. The transport amount control mechanism 55 adjusts the transport amount of the electrode sheet 1, positions the active material non-applied portion 22 at the welding position of the tab Tb, and controls the position of the welded tab Tb.
b is positioned at the position where the protective tape Tp is attached.

The transport amount control mechanism 55 includes a control section 55a for performing various controls, a servo motor (or a pulse motor) not shown controlled by the control section 55a, and a predetermined direction by the servo motor. And a raising / lowering roller 55b that moves up and down in the direction. The elevating roller 55b is connected to a servomotor via a drive transmission mechanism (not shown), and is driven up and down in the vertical direction by rotating the servomotor. The lifting roller 5
A pair of running rollers 59 is provided above 5b, and the electrode sheet 1 is hung on the elevating rollers 55b via the running rollers 59. The elevating roller 55b rotates freely as the electrode sheet 1 travels.

The control unit 55a includes a sensor group 54 for initial correction.
A storage unit (not shown) that stores the initial correction amount detected by A, and a calculation unit (not shown) that calculates the initial correction amount that is performed when positioning the position where the protective tape Tp is to be attached is determined from the initial correction amount. .

Finally, the electrode sheet 1 to which the tab Tb and the protective tape Tp are attached is conveyed to the sheet winding section 45 via the traveling roller 60 and the feed roller 61. A cutter 6 for cutting the electrode sheet 1 to a predetermined length is provided between the feed roller 61 and the sheet winding section 45.
2, one of the electrode sheets 1 cut by the cutter 62 is taken up by a sheet take-up unit 45, and the leading end of the electrode sheet 1 on the side of the transport mechanism 41 is pinched by a pair of feed rollers 61. It will be kept as it was. At this time, the lifting roller 55 of the transport amount control mechanism 55
When b is lowered, the electrode sheet 1 is fed in the transport direction at each portion before the transport amount control mechanism 5. When the electrode sheet 1 is sent downstream from the feed roller 61, the elevating roller 55b moves up to a predetermined reference position.

Here, for the positioning process for attaching the tab Tb and the protective tape Tp to the electrode sheet 1 in the electrode sheet transport mechanism 41 incorporated in the battery manufacturing apparatus 40 configured as described above, refer to the flowchart of FIG. This will be described below. In the electrode sheet transport mechanism 41, each time the electrode sheet 1 is wound, a new boundary portion K is transported below the initial correction sensor group 54A.

First, in step S1, the position of the boundary portion K between the active material coated portion 21 and the active material non-coated portion 22 of the electrode sheet 1 is detected by the initial correction sensor group 54A. Hereinafter, in the positioning processing performed here, the first
A detailed description of the same parts as those in the positioning processing in the embodiment is omitted.

In step S2, the control unit 55a of the transport amount control mechanism 55 stores a predetermined correction amount according to the detection result of the initial correction sensor group 54A in the storage unit as a first initial correction amount. Then, in a state where the feed operation of the electrode sheet 1 by the feed roller 61 is stopped, the elevating roller 5b is lowered at a high speed by a predetermined amount corresponding to the first initial correction amount,
The boundary portion K is moved at a high speed to near the position before the final correction sensor 54B. The position correction in step S2 is as follows.
Since the correction is for arranging the boundary portion K in the vicinity of the final correction sensor 54B, the position accuracy is ensured by the correction at a later stage, and the high-speed processing is performed with emphasis on productivity.

In step S3, the controller 55a lowers the elevating roller 55b at a lower speed to correct the position of the boundary portion K. Then, the position of the boundary portion K is moved at a low speed so that the final correction sensor 54B can detect the boundary portion K. In step S3, the moving speed of the boundary region K is relatively reduced in order to secure the positional accuracy.

In step S4, when the final correction sensor 54B detects the boundary portion K, the control section 55a lowers the raising / lowering roller 55b at a low speed by a predetermined amount, conveys the electrode sheet 1, and transfers the active material. The application unit 21 is stopped in a state where the predetermined position is accurately aligned with the tab welding position. Then, the tab welding device 56 welds the tab Tb to the active material non-applied portion 21.

When the welding of the tab Tb is completed, step S
In 5, the feed operation is performed on the electrode sheet 1 by the feed roller 61, and the welded portion of the tab Tb is sent to a position near the tab detection sensor 57.

In step S6, the control unit 55a
Tab Tb based on the first initial correction amount stored in the storage unit
For positioning the protective tape at the position where the protective tape Tp is attached
The initial correction amount is calculated in the calculation unit.

The arithmetic unit calculates the number N1 of active material application patterns (for example, N1 = 10) from the tip of the electrode sheet 1 cut by the cutter 62 to the welding position of the tab Tb, and calculates the number of the electrodes cut by the cutter 62 in the same manner. Based on the ratio of the active material application pattern number N2 (for example, N2 = 8) from the leading end of the sheet 1 to the position where the protective tape Tp is attached,
The second initial correction amount is calculated. Here, the active material application pattern is one pattern in which the active material application part 21 and the active material non-application part 22 are a set.

For example, if the first initial correction amount is X1,
The second initial correction amount X2 can be obtained by an approximate value calculation formula of X2 ≒ X1 × N2 / N1. Further, since N2 / N1 can be regarded as a constant that can be set in advance, the second initial correction amount X2 is, in the end, a constant N2 / N1 that is equal to the first initial correction amount X1 stored in the storage unit. This is obtained by a very simple operation of multiplying by N1.

The protection tape Tp is calculated using the approximate value calculation formula.
The reason why the initial correction amount for the positioning of the electrode sheet roll 52 is determined is that the error of the active material application pattern of the electrode sheet roll 52 has a certain tendency as described above. In addition, the positioning accuracy is naturally not high in such an approximate calculation, but the positioning accuracy is left to the final correction. In the initial correction, the productivity may be emphasized. No. As a result, the initial correction can be performed by the above-described very simple approximate calculation formula without using the sensor for the initial correction for positioning the protective tape Tp at the application position.

The first initial correction amount X1 used when calculating the second initial correction amount X2 is the first initial correction amount X1 used when welding the tab Tb, and the tab Tb is used as the protective tape Tp. Used to reach the position where the label is attached. However, when calculating the second initial correction amount X2, the latest first initial correction amount X1 may be used. Since the initial correction is only to make a rough correction leading to the final correction by grasping the tendency of the error of the electrode sheet 1, a slight correction error here is allowed, so that the first initial correction amount X1 is used. This is because there is almost no problem in strictly using the point at which the point is used unless a point far apart is used.

In step S7, the control section 5a corrects the position of the welded tab Tb at a high speed by lowering the elevating roller 55b based on the second initial correction amount X2 calculated by the arithmetic section. Move at high speed to near 57. This correction is an initial correction, and the productivity is more important than the accuracy, so that the correction is performed at a high speed.

In step S8, the controller 55a further lowers the elevating roller 55b, conveys the electrode sheet 1 at a low speed so that the tab detection sensor 57 can easily detect the welded tab Tb, and moves the position of the tab Tb. Move. This correction is performed at a low speed because the positioning accuracy is more important than the productivity.

In step S9, when the tab detecting sensor 57 detects the tab Tb, the controller 55a lowers the elevating roller 55b by a predetermined amount at a low speed. By doing so, the control unit 55a conveys the electrode sheet 1 at a low speed by a predetermined amount, and stops in a state where the welded tab Tb is accurately positioned at the position where the protective tape Tp is attached. Then, the tape sticking device 58 sticks the protective tape Tp on the welded tab Tb.

When the process of attaching the protection tape Tp is completed,
The electrode sheet 1 is sent to the downstream side by the feed roller 61, and thereafter, the processes from step S1 to step S8 are repeated for the next battery production.

As is apparent from the above description, according to the battery manufacturing apparatus 40 of this embodiment, the correction amount of the initial correction performed in the process of positioning the electrode sheet 1 for attaching the protection tape Tp is: Tab Tb
Is calculated based on the correction amount of the initial correction performed in the process of positioning the electrode sheet 1 in order to attach the electrode sheet 1.
Therefore, it is not necessary to provide a sensor for determining the initial correction amount before the tab detection sensor 57, and the cost of the battery manufacturing apparatus 40 itself can be reduced.

Since the calculation of the initial correction performed in the process of positioning the electrode sheet 1 for mounting the tab Tb is performed by a very simple formula, the calculation process is performed quickly and easily, and the program design is also easy. become.

In the embodiment described above, for example, a part of the configuration can be appropriately changed and implemented as follows. Of course, other modifications not illustrated below are naturally possible.

For example, in the present embodiment, the transport of the electrode sheet 1 by the transport amount control mechanism 55 is performed by moving the lifting roller 55b. However, the electrode sheet 1 may be sandwiched between a pair of rollers and transported by rotating the rollers. At this time, the stepwise conveyance of the electrode sheet 1 is performed, for example, by controlling the rotation of a servomotor.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a main part of an electrode sheet transport mechanism according to a first embodiment.

FIG. 2 is a view showing an active material application pattern of an active material application portion applied to an electrode sheet and an active material non-application portion.

FIG. 3 is a diagram illustrating a configuration of a battery manufacturing apparatus in which the electrode sheet transport mechanism according to the first embodiment is incorporated.

FIG. 4 is a diagram showing a flowchart of an electrode sheet positioning process performed when welding tabs according to the first embodiment.

FIG. 5 is a diagram illustrating a configuration of a battery manufacturing apparatus in which an electrode sheet transport mechanism according to a second embodiment is incorporated.

FIG. 6 is a diagram showing a flowchart of an electrode sheet positioning process performed when attaching a tab and a protective tape according to the second embodiment.

FIG. 7 is a diagram illustrating a configuration of a conventional battery manufacturing apparatus.

[Explanation of symbols]

1 ... electrode sheet, 4,54 ... pattern detecting section as detecting means, 4A, 54A ... initial correcting sensor group as detecting means or first detecting means, 4B, 54B ... as detecting means or second detecting means Sensor for final correction, 5,55
... A transport amount control mechanism as transport amount control means, 5b, 55
b: Elevating roller as drive roller, 6, 54: Tab welding device as tab attaching means, 7: Tab detecting unit as detecting means, 8: Tape attaching device as tape attaching means, 21: Active material applying unit, 22: uncoated portion of active material, 3
0, 40: battery manufacturing apparatus, 31, 41: electrode sheet transport mechanism, Tb: tab as a predetermined member, Tp: protective tape as a predetermined member.

Continued on the front page F-term (reference)

Claims (16)

[Claims] 1. A battery manufacturing apparatus for positioning a predetermined portion of an electrode sheet at a predetermined position in a process of transporting an electrode sheet coated with an electrode material at a predetermined interval and mounting a predetermined member on the electrode sheet. A plurality of detection means for detecting a predetermined portion of the electrode sheet conveyed by the conveyance mechanism, and a conveyance amount control means for controlling a conveyance amount of the electrode sheet according to a detection result of each of the detection means; A battery manufacturing apparatus, wherein the control means corrects the traveling position of the electrode sheet stepwise based on the detection result of each of the detection means, and positions the predetermined portion at the predetermined position. 2. A battery manufacturing apparatus for positioning a predetermined portion of the electrode sheet at a predetermined position and mounting a predetermined member on the electrode sheet in a process of transporting the electrode sheet coated with the electrode material at a predetermined interval, comprising: A first detection unit and a second detection unit that detect a predetermined portion of the electrode sheet conveyed by the conveyance mechanism; and a conveyance amount control unit that controls a conveyance amount of the electrode sheet according to a detection result of each of the detection units. The conveyance amount control means corrects the traveling position of the electrode sheet by adjusting the conveyance amount of the electrode sheet according to the detection result of the first detection means, and the second detection means A battery manufacturing apparatus for positioning the predetermined portion at the predetermined position by transporting the electrode sheet by a predetermined amount based on the detection result. 3. A battery manufacturing apparatus for positioning a predetermined portion of the electrode sheet at a predetermined position in a process of transporting the electrode sheet coated with the electrode material at a predetermined interval and mounting a predetermined member on the electrode sheet. A first detection unit and a second detection unit that detect a predetermined portion of the electrode sheet conveyed by the conveyance mechanism; and a conveyance amount control unit that controls a conveyance amount of the electrode sheet according to a detection result of each of the detection units. The transport amount control means corrects the traveling position of the electrode sheet based on the detection result of the first detection means so that the second detection means can detect the traveling position, A battery manufacturing apparatus, wherein the predetermined portion is positioned at the predetermined position by transporting the electrode sheet by a predetermined amount based on a detection result of a detection unit. 4. The method according to claim 1, wherein the carrying amount control means controls the carrying speed of the electrode sheet when making a correction based on the detection result of the first detecting means. The battery manufacturing apparatus according to claim 2, wherein the traveling position of the electrode sheet is corrected at a speed higher than a speed. 5. The first detecting means includes a plurality of sensors arranged at predetermined intervals along a direction in which the electrode sheet is conveyed, and the first detecting means detects a detection result of each of the sensors. Based on the above, the position of a predetermined portion of the electrode sheet is specified in a stepwise manner, and the conveyance amount control unit conveys the electrode sheet by a predetermined conveyance amount according to a detection result of the first detection unit. The battery manufacturing apparatus according to any one of claims 2 to 4, wherein: 6. The first detection means, wherein a plurality of sensors capable of detecting an electrode material application portion to which the electrode material is applied are arranged at predetermined intervals along a transport direction of the electrode sheet. The first detecting means is configured to determine a position of a boundary portion between the electrode material application portion and the electrode non-application portion where the electrode material is not applied in a stepwise manner based on a detection result of each of the sensors. The transport amount control means transports the electrode sheet by a predetermined transport amount corresponding to the number of the sensors that have detected the electrode material application section. The battery manufacturing apparatus according to any one of the above. 7. The transport amount control means includes a drive roller for reciprocating in a predetermined direction intersecting with a transport direction of the electrode sheet to detour the electrode sheet, and a predetermined drive according to a detection result of each of the sensors. 7. The battery manufacturing apparatus according to claim 5, wherein the drive roller is driven by an amount to change the amount of detour to control a transport amount of the electrode sheet. 8. The apparatus according to claim 1, wherein the predetermined member is a tab, and further includes a tab attaching unit for attaching the tab to the electrode sheet, wherein the transport amount control unit determines a predetermined position of the electrode material-uncoated portion on which the electrode material is not applied. The battery manufacturing apparatus according to any one of claims 1 to 7, wherein a position is positioned at a mounting position of the tab. 9. The apparatus according to claim 9, wherein the predetermined member is a tab and a protective tape, and the apparatus further comprises a tab attaching means for attaching the tab to the electrode sheet, and the transport amount controlling means comprises an electrode material not coated with the electrode material. Positioning the predetermined position of the portion at the mounting position of the tab, further comprising a tape affixing means for affixing a protective tape for protecting the tab, wherein the transport amount control means, the transport tab control means, The battery manufacturing apparatus according to any one of claims 1 to 7, wherein the battery manufacturing apparatus is positioned at a position where the battery is attached. 10. A battery manufacturing apparatus for positioning a predetermined portion of the electrode sheet at a predetermined position and mounting a predetermined member on the electrode sheet in a process of transporting the electrode sheet coated with the electrode material at a predetermined interval, A detecting unit that detects a correction amount of a transport error of the electrode sheet transported by the transport mechanism; and a transport amount control unit that corrects a transport amount of the electrode sheet based on a detection result of the detecting unit. The amount control means performs correction based on the first correction amount detected by the detection means when performing the first positioning, and calculates based on the first correction amount when performing the second positioning. A battery manufacturing apparatus that performs correction with a second correction amount. 11. The detecting means comprises a plurality of sensors arranged at a predetermined interval along the direction of transport of the electrode sheet, and based on a detection result of each of the sensors, corrects the electrode sheet in a stepwise manner. The battery manufacturing apparatus according to claim 10, wherein the amount is detected. 12. The detecting means includes a plurality of sensors capable of detecting a boundary portion between the electrode material application portion and an electrode non-application portion where the electrode material is not applied, along a transport direction of the electrode sheet. The battery manufacturing apparatus according to claim 10, wherein the battery manufacturing apparatus is configured to be arranged at a predetermined interval, and detects a predetermined correction amount according to the number of the sensors that have detected the boundary portion. 13. The method according to claim 13, wherein the transport amount control unit determines the distance from a predetermined reference point to a position where the first positioning is performed and a distance from the predetermined reference point to a position where the second positioning is performed. 13. The battery manufacturing apparatus according to claim 10, wherein the correction amount of 2 is calculated. 14. The conveyance amount control means performs the second positioning from the predetermined reference point and the number of the electrode material application portions between a predetermined reference point and a position where the first positioning is performed. The battery manufacturing apparatus according to claim 10, wherein the second correction amount is calculated from a ratio with a number of the electrode material application portions existing up to a position. 15. The method according to claim 15, wherein the predetermined member is a tab, further comprising a tab attaching unit for attaching the tab to the electrode sheet, wherein the transport amount controlling unit performs the first positioning before attaching the tab. The battery manufacturing apparatus according to any one of claims 10 to 14, wherein a predetermined position of the electrode material-uncoated portion on which the material is not applied is positioned at the mounting position of the tab. 16. A tape attaching means for attaching a protective tape as the predetermined member for protecting the tab to the electrode sheet, wherein the transport amount control means comprises a second tape attaching means for attaching the second protective tape before attaching the protective tape. 16. The battery manufacturing apparatus according to claim 15, wherein the position of the attached tab is determined at a position where the protective tape is attached.