JP2012243577A - Device for manufacturing electrode material sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an increase in an installation space required while improving positioning accuracy of a positive electrode plate and a negative electrode plate to a separator sheet seen from the attachment direction when manufacturing an electrode material sheet having electrode plates fixed onto the both side surfaces of the separator sheet.SOLUTION: A device for manufacturing an electrode material sheet includes a folding device 4 for folding a separator sheet in a vertical posture carried by a vertical carrier device to house the folded separator sheet in a case, and supporting the separator sheet in a process of folding the separator sheet so that an installation region of the electrode plate on the separator sheet is oriented upward.

Description

  The present invention relates to an electrode material sheet manufacturing apparatus.

Inside the secondary battery, individual electrode plates are arranged and accommodated so as not to contact each other by a separator sheet for the purpose of preventing a short circuit between the positive electrode plate and the negative electrode plate and holding the electrolyte.
In such a secondary battery manufacturing process, a positive electrode plate and a negative electrode plate are paired, and an electrode material sheet is manufactured in such a manner that a separator sheet is interposed therebetween, and the electrode material sheet is accommodated inside the package. doing.

For example, Patent Document 1 discloses an electrode material sheet having a configuration in which positive electrode plates and negative electrode plates are alternately arranged in the extending direction of a separator sheet, and a plurality of positive electrode plates and negative electrode plates are sandwiched between two separator sheets. A manufacturing apparatus is disclosed.
However, in the electrode material sheet disclosed in Patent Document 1, a positive electrode plate and a negative electrode plate are sandwiched between two separator sheets. For this reason, when the electrode material sheet is folded and packaged, two separator sheets are interposed between all the positive plates and the negative plates, and the accommodation efficiency of the positive plates and the negative plates is reduced. , Leading to a decrease in storage capacity.

  On the other hand, Patent Document 2 discloses an electrode material sheet manufacturing apparatus that fixes a positive electrode plate and a negative electrode plate on both sides of one separator sheet. According to such an electrode material sheet, the separator sheet interposed between the positive electrode plate and the negative electrode plate when folded can be reduced.

JP 2009-9919 A JP 2005-190777 A

By the way, the performance of the secondary battery depends on the position seen from the stacking direction of the plurality of positive plates and negative plates housed in the package. More specifically, when viewed from the stacking direction, the performance of the secondary battery is enhanced when the positive electrode plate and the negative electrode plate are overlapped without shifting.
For this reason, in order to manufacture a high-performance secondary battery, high positioning accuracy of the positive electrode plate and the negative electrode plate with respect to the separator sheet as viewed from the mounting direction of the positive electrode plate and the negative electrode plate is required.

In the electrode material sheet manufacturing apparatus of Patent Document 2, the electrode plate is always pressed against the separator sheet by the suction mechanism, and separately from this, the both ends of the separator sheet in the width direction are gripped by rotatable clamps, and then the suction mechanism is retracted. The procedure is taken. However, when the rotatable clamp rotates and a new separator sheet is wound to isolate the electrode from the next electrode layer, the clamp is also covered with a new separator sheet together with the already formed electrode layer. It will be broken. In this state, the electrode plate for newly forming the next layer is newly pressed by the suction mechanism, and with the suction mechanism in contact, the rotatable clamp releases the gripping state and performs the retraction operation. Will have to. However, since the new separator sheet is newly pulled out from the separator sheet supply mechanism by the rotational movement of the clamper, the necessary tension is always applied to the separator sheet to realize this operation. Here, in order for the clamper to overcome and open the tension of the separator sheet covering itself, the clamper needs a force to overcome the mechanical force for tightening the clamper generated by the tension loaded on the separator sheet, or the separator sheet supply mechanism At this time, the tension is temporarily reduced, and even when pressed by the suction mechanism, it is necessary to relax the tension so that the separator sheet that is not in contact with the suction mechanism can follow the gripper release operation. It is possible to become. However, in general, separator sheets used for secondary batteries are not always guaranteed to have sufficient strength against physical contact and tension. It is difficult to guarantee that no damage will occur. In addition, when this tension relaxation is performed, a redundant length is generated in the separator sheet wound around each electrode layer every time it is formed, and this is the case when it is finally assembled as a battery. The excess volume may be consumed.
Also, the adhesion strength of the electrode layer applied to the electrode plate with the current collector or the adhesion strength between the electrode active materials in the electrode layer is generally sufficient for physical contact such as rubbing. Often not. For this reason, if the electrode active material layer is gripped by a clamp, rubbing, scratching, or dropping or peeling of the electrode active material layer may occur unless the fully gripped state is released and then retracted. This will adversely affect the battery characteristics. In addition, when a current collector exposed portion sufficient for gripping the clamp is provided around the electrode active material layer, the battery capacity will be reduced this time. When gripping the multilayered electrode with this clamper, sufficient gripping is possible when the number of layers is small, but as the number of layers increases, the gripping force applied to each electrode layer becomes weaker and unstable. There is also a possibility that it may cause a cause of misalignment.

In order to solve such a problem, it can be assumed that the positive electrode plate and the negative electrode plate are fixed while the separator sheet is conveyed horizontally with the front and back surfaces directed in the vertical direction.
However, if the separator sheet is always transported horizontally, it is necessary to secure a large installation space for the apparatus in the factory.

  An object of this invention is to suppress the increase in the installation space required, improving the positioning accuracy of the positive electrode plate and negative electrode plate with respect to the separator sheet seen from the attachment direction.

  As a means for solving the above-described problems, the present invention provides a vertical transport in which a separator sheet that forms an electrode material sheet together with an electrode plate is vertically transported in a vertical posture in which one surface and the other surface face in a horizontal direction. And the separator sheet in the vertical posture conveyed by the vertical conveying device is folded and accommodated in a case, and the electrode plate on the separator sheet is placed upward in the process of folding the separator sheet. A configuration is provided that includes a folding device that supports the electrode plate and an electrode plate installation device that installs the electrode plate in an installation region of the electrode plate that is directed upward by the folding device.

According to the present invention, since the vertical conveying device conveys the separator sheet in the vertical direction, the installation space for the electrode material sheet manufacturing apparatus is reduced as compared with the case where the separator sheet is always conveyed horizontally.
On the other hand, according to the present invention, since the folding device supports the electrode plate installation area upward in the process of folding the separator sheet, the electrode plate can always be installed on the surface facing upward of the separator sheet. it can. For this reason, according to this invention, when attaching an electrode plate to a separator sheet, it can suppress that the position shift seen from the attachment direction arises.

  ADVANTAGE OF THE INVENTION According to this invention, the increase in the installation space required can be suppressed, improving the positioning accuracy of the positive electrode plate and negative electrode plate with respect to the separator sheet seen from the attachment direction.

It is a block diagram which shows schematic structure of the electrode material sheet manufacturing apparatus in one Embodiment of this invention. It is a perspective view which shows the principal part containing the unwinding apparatus with which the electrode material sheet manufacturing apparatus in one Embodiment of this invention is equipped, a vertical conveying apparatus, a folding apparatus, and an electrode plate installation apparatus. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus in one Embodiment of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus in one Embodiment of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus in one Embodiment of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus in one Embodiment of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus in one Embodiment of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus in one Embodiment of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus in one Embodiment of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus in one Embodiment of this invention. It is a schematic diagram which shows a mode that the electrode material sheet manufactured by the electrode material sheet manufacturing apparatus in one Embodiment of this invention was folded. It is a perspective view which shows the principal part of the electrode material sheet manufacturing apparatus provided with the fixing device as a modification of the present invention. It is a perspective view which shows the principal part of the electrode material sheet manufacturing apparatus which is a modification of this invention and is equipped with a press apparatus. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus provided with a press apparatus which is a modification of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus provided with a press apparatus which is a modification of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus provided with a press apparatus which is a modification of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus provided with a press apparatus which is a modification of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus provided with a press apparatus which is a modification of this invention. It is a perspective view for demonstrating operation | movement of the electrode material sheet manufacturing apparatus provided with a press apparatus which is a modification of this invention.

  Hereinafter, an embodiment of an electrode material sheet manufacturing apparatus according to the present invention will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

The electrode material sheet manufacturing apparatus 1 of the present embodiment manufactures an electrode material sheet composed of a separator sheet, a positive electrode plate, and a negative electrode plate by fixing the positive electrode plate and the negative electrode plate to both sides of one separator sheet. To do.
And the electrode material sheet manufacturing apparatus 1 of this embodiment is the unwinding apparatus 2, the vertical conveying apparatus 3, the folding apparatus 4, the electrode plate installation apparatus 5, and the cutting apparatus 6, as shown in FIG. A tension sensor 7, a position detection sensor 8, and a control device 9 are provided.

As shown in FIG. 2, the unwinding device 2 supports the separator sheet roll R formed by winding the separator sheet S before the electrode plate D is installed, and adjusts the rotation speed of the separator sheet roll R. Thus, the speed of the separator sheet S and the tension acting on the separator sheet S can be adjusted.
In addition, this unwinding device 2 is being fixed with respect to the installation surface by the support part not shown.

  The vertical conveyance device 3 vertically conveys the separator sheet S sent out from the unwinding device 2 in a vertical posture in which the front and back surfaces (one surface and the other surface) face the horizontal direction. As shown in FIG. 1, a drawer portion 31 and a guide roller 32 are provided.

The pull-out unit 31 pulls out the separator sheet S from the separator sheet roll R supported by the unwinding device 2 and conveys the pulled-out separator sheet S from above to below.
As shown in FIG. 2, the drawer portion 31 includes a pair of drive rolls 31a and 31b that sandwich the separator sheet S and feed the sandwiched separator sheet S downward, and a drive unit 31c that rotationally drives the drive rolls 31a and 31b. And.
In addition, the drawer | drawing-out part 31 is supported by the rack gear rail 41a mentioned later with which the folding apparatus 4 is provided so that a slide to the orthogonal | vertical direction with respect to the front and back of the separator sheet S is possible.

The guide roller 32 guides the separator sheet S drawn in the horizontal direction from the unwinding device 2 downward (that is, in the vertical direction), and as shown in FIG. It is arranged between.
The guide roller 32 is rotatably supported by a support portion (not shown) fixed to the installation surface.

Returning to FIG. 1, the folding device 4 folds the vertical separator sheet S conveyed by the vertical conveying device 3 and stores it in the case C, and in the process of folding the separator sheet S, the electrode plate on the separator sheet S. The above-mentioned installation area (hereinafter referred to as electrode plate installation area) is supported upward.
As shown in FIG. 1, the folding device 4 includes a drawer moving device 41, a first front surface side set guide 42, a second front surface side set guide 43, a first back surface side set guide 44, and a second back surface. A side set guide 45 and a set guide moving device 46 are provided.

The drawer part moving device 41 moves the drawer part 31, which is a part of the vertical conveying device 3, in the vertical direction with respect to the front and back surfaces of the separator sheet S in a vertical posture, thereby changing the vertical conveying path of the separator sheet S to the separator sheet. It is displaced in the direction perpendicular to the front and back surfaces of S.
The drawer moving device 41 includes a so-called rack and pinion mechanism, and includes a rack gear rail 41a having a rack gear formed on the upper surface shown in FIG. 2 and a pinion gear (not shown) attached to the drive unit 31c of the drawer 31. ing.

As shown in FIG. 2, the rack gear rail 41 a is disposed horizontally with the separator sheet S in a vertical posture interposed therebetween, and is provided so as to extend in a direction perpendicular to the front and back surfaces of the separator sheet S. The rack gear rail 41a is positioned so that the drawer portion 31 is located directly above the front end portion of the case C when the drawer portion 31 is closest to one end portion (front end portion in FIG. 2). The length is set so that the drawer portion 31 is located immediately above the back end portion of the case C when the drawer portion 31 is closest to the (back end portion in FIG. 2).
The pinion gear is pivotally supported by the drive unit 31c, meshes with a rack gear provided on the upper surface of the rack gear rail 41a, and rotates to move the drawer portion 31 in the length direction of the rack gear rail 41a. As the power of the pinion gear, for example, the power of the drive unit 31c can be used.

The first surface side set guide 42 and the second surface side set guide 43 are set guides that are brought into contact with the surface of the separator sheet S in a vertical posture, and correspond to the one surface side set guide in the present invention. That is, the electrode material sheet manufacturing apparatus 1 of the present embodiment includes two (a plurality) of one-side set guides.
The first back side set guide 44 and the second back side set guide 45 are set guides that are in contact with the back side of the separator sheet S in a vertical posture, and correspond to the other side set guide in the present invention. That is, the electrode material sheet manufacturing apparatus 1 of the present embodiment includes two (plural) other side set guides.

The first front surface side set guide 42, the second front surface side set guide 43, the first rear surface side set guide 44, and the second rear surface side set guide 45 have the same shape and are in direct contact with the separator sheet S. And a contact bar 4a that is moved while maintaining a length direction in a horizontal direction parallel to the front and back surfaces of the separator sheet S in a vertical posture, and arms 4b connected to both ends of the contact bar 4a, respectively. It has.
The surface of the contact bar 4a is set with a coefficient of static friction so that the separator sheet S is prevented from being displaced on the assumption that the separator sheet S is not damaged during the movement. Specifically, the static friction coefficient is set by adjusting the surface roughness of the contact bar 4a, for example.

  Returning to FIG. 1, the set guide moving device 46 moves the first front side set guide 42, the second front side set guide 43, the first back side set guide 44, and the second back side set guide 45, The first front surface side set guide 42, the second front surface side set guide 43, the first back surface side set guide 44 and the second back surface side set guide 45 are configured to be able to move up and down, horizontally and tilt.

  The electrode plate installation device 5 installs the electrode plate D in the electrode plate installation region of the separator sheet S directed upward by the folding device 4, and includes a positive electrode plate arrangement device 51, a negative electrode plate arrangement device 52, And an adhesive coating device 53.

  In the present embodiment, an electrode plate D functioning as a positive electrode (hereinafter referred to as a positive electrode plate D1) is disposed on the surface of the separator sheet S, and an electrode plate D functioning as a negative electrode on the back surface of the separator sheet S (hereinafter referred to as a positive electrode plate D1). (Refer to FIG. 5 and FIG. 8).

  And the positive electrode plate arrangement | positioning apparatus 51 adsorbs and hold | maintains the positive electrode plate D1 mounted in the predetermined position, as shown in FIG. 2, and is the surface of the separator sheet S arrange | positioned upwards by the folding apparatus 4 The positive electrode plate D1 is disposed from above with respect to the electrode plate installation region on the side.

  Further, as shown in FIG. 2, the negative electrode plate arranging device 52 sucks and holds the negative electrode plate D <b> 2 placed at a predetermined position, and the back surface of the separator sheet S arranged upward in the folding device 4. The negative electrode plate D2 is disposed from above with respect to the electrode plate installation region on the side.

The adhesive coating device 53 applies an adhesive to the electrode plate installation area of the separator sheet S.
In the present embodiment, the adhesive coating device 53 also applies an adhesive to the periphery of the electrode plate D. Note that the adhesive used in the present embodiment has an adhesive force that does not peel off the electrode plate D. In addition, as the adhesive used in the present embodiment, the same resin as the thermoplastic resin compounded as a binder in the electrode mixture of the secondary battery is temporarily heated and melted, or used for forming an electrode active material layer. It is possible to select a resin obtained by melting and heating the same type of resin as that used, or an adhesive resin having characteristics that do not hinder battery characteristics. The application range of the adhesive is preferably set to the minimum necessary range so as not to interfere with the electrochemical reaction required for the secondary battery.

Returning to FIG. 1, the cutting device 6 is for cutting the separator sheet S, and cuts the separator sheet S when the electrode material sheet accommodated in the case C reaches a predetermined capacity.
The tension sensor 7 measures the tension acting on the separator sheet S and outputs the value. A plurality of tension sensors 7 are arranged along the conveying direction of the separator sheet S so that the tension in a desired region can be measured.
The position detection sensor 8 detects and outputs the position of each component member or the separator sheet S. For example, the drawer movement device 41, the first surface side set guide 42, and the second surface side set guide 43 are provided. The positions of the first back side set guide 44 and the second back side set guide 45 are detected and output.

  The control device 9 controls the entire operation of the electrode material sheet manufacturing device 1 of the present embodiment, and includes an unwinding device 2, a vertical conveying device 3, a folding device 4, an electrode plate setting device 5, and a cutting device. The device 6, the tension sensor 7, and the position detection sensor 8 are electrically connected.

  Next, operation | movement of the electrode material sheet manufacturing apparatus 1 of this embodiment comprised in this way is demonstrated. The following operation will be described with reference to FIGS.

In addition, in manufacture of the electrode material sheet by the electrode material sheet manufacturing apparatus 1 of the present embodiment, the series of steps described below is set as one set, and the electrode material sheet is repeatedly performed on the case C by repeating the set a plurality of times. The case C is folded and stored, and the case C is filled with the electrode material sheet.
Since the steps in each set are substantially the same, the operation in one set will be described in the following description.

Further, in the following description, for convenience, a state in which a part of the front end side of the separator sheet S is already accommodated in the case C is set as the start time of the operation in the one set. It is not limited to this state.
Furthermore, in the following description, a position directly above the front end of the case C (the end on the surface side of the vertical separator sheet S) is referred to as a front reference position, and a rear end of the case C (a vertical separator sheet). The position directly above (the end on the back side of S) is referred to as the back side reference position.

  First, as shown in FIG. 3A, the control device 9 causes the drawer moving device 41 to move the drawer 31 to the near end of the rack gear rail 41a. Thus, the vertical conveyance path of the separator sheet S conveyed in the vertical direction by the drawer unit 31 is set so as to overlap the near side reference position.

Further, the control device 9 moves the second surface side set guide 43 from the surface side of the separator sheet S to the set guide moving device 46 so that the contact bar 4a of the second surface side set guide 43 overlaps the back side reference position. Let
In addition, the control device 9 sets the second back surface side set guide 45 so that the contact bar 4a overlaps the near side reference position and is positioned above the contact surface 4a of the second front surface side set guide 43. The second back side set guide 45 is moved from the back side of the separator sheet S to the guide moving device 46.
As a result, as shown in FIG. 3A, the separator sheet S is wound around the contact bar 4 a of the second back side set guide 45 and the contact bar 4 a of the second surface side set guide 43 from above. .
In this step, as shown in FIG. 3A, the separator sheet S is fed out so that the surface-side electrode plate installation region is positioned immediately before the contact bar 4a of the second back-side set guide 45. Is set.

Subsequently, as shown in FIG. 3 (b), the control device 9 causes the drawer moving device 41 to move the drawer 31 toward the rear end of the rack gear rail 41a and synchronizes with this to set the guide. The moving device 46 moves the contact bar 4 a of the first front surface side set guide 42 from the front surface side of the separator sheet S above the second back surface side set guide 45.
The control device 9 causes the drawer portion 31 to pull out a required amount of the separator sheet S in synchronization with the operations of the drawer portion moving device 41 and the set guide moving device 46.

Subsequently, as shown in FIG. 4A, the control device 9 causes the drawer portion moving device 41 to move the drawer portion 31 to the far end of the rack gear rail 41a, and causes the set guide moving device 46 to move to the first surface. The contact bar 4a of the side set guide 42 is moved to the back side reference position.
At this time, the control device 9 sets the set guide moving device so that the surface of the separator sheet S is horizontal upward in the region between the first front surface side set guide 42 and the second rear surface side set guide 45. 46, the height of the contact bar 4a of the first surface side set guide 42 is adjusted.
As a result, as shown in FIG. 4A, one of the electrode plate installation regions on the surface of the separator sheet S is the contact between the contact bar 4a of the first front surface side set guide 42 and the second rear surface side set guide 45. Between the bar 4a, it is horizontally arranged upward. That is, in this embodiment, the separator sheet S is separated by the folding device 4 including the first front surface side set guide 42 and the second rear surface side set guide 45 so that the electrode plate installation region on the surface of the separator sheet S faces upward. Supported.

  Subsequently, as illustrated in FIG. 4B, the control device 9 causes the adhesive coating device 53 to apply an adhesive to the electrode plate installation region of the separator sheet S directed upward.

  In addition, when the control device 9 indicates that the tension acting on the separator sheet S is weak in the electrode plate installation region when the adhesive sensor is applied, the measurement result of the tension sensor 7 is shown in FIG. Thus, the drawer part moving device 41 moves the drawer part 31 closer to the front side, and the set guide moving apparatus 46 moves the contact bar 4a of the first surface side set guide 42 further to the back side than the back side reference position. And control so that the tension acting on the separator sheet S is increased in the electrode plate installation region.

  In order to shorten the work time, the control device 9 holds the positive electrode plate D1 in the positive electrode plate arranging device 51 and waits when applying the adhesive, as shown in FIG. 4B. .

Subsequently, as shown in FIG. 5A, the control device 9 causes the positive electrode plate arranging device 51 to arrange the positive electrode plate D1 with respect to the electrode plate installation region.
Here, as described above, the separator sheet S is supported by the folding device 4 so that the electrode plate installation region where the positive electrode plate D1 is disposed faces upward.
That is, in the present embodiment, the positive electrode plate D1 is disposed from above with respect to the electrode plate installation region facing upward.

Subsequently, as shown in FIG. 5B, the control device 9 causes the adhesive application device 53 to apply an adhesive to the periphery of the positive electrode plate D1.
The adhesive applied to the surface of the separator sheet S in the step shown in FIG. 5B is a region where the positive electrode plate D1 of the separator sheet S is installed when the separator sheet S is folded later, This is for bonding the region above the region where the sex electrode plate D1 is installed.

Subsequently, as shown in FIG. 6A, the control device 9 causes the drawer moving device 41 to move the drawer 31 toward the near end of the rack gear rail 41a, and synchronizes with this to set the guide. The moving device 46 moves the contact bar 4a of the first back surface side set guide 44 from the back surface side of the separator sheet S above the first front surface side set guide 42.
The control device 9 causes the drawer portion 31 to pull out a required amount of the separator sheet S in synchronization with the operations of the drawer portion moving device 41 and the set guide moving device 46. Further, as shown in FIG. 6B, the control device 9 retracts the second surface side set guide 43 in the set guide moving device 46 in order to prepare for the subsequent process.

  Subsequently, as shown in FIG. 6B, the control device 9 causes the drawer moving device 41 to move the drawer 31 to the near end of the rack gear rail 41a, and causes the set guide moving device 46 to move the first back surface. The contact bar 4a of the side set guide 44 is moved to the near side reference position.

Subsequently, as shown in FIG. 7A, the control device 9 has a back surface of the separator sheet S with the contact bar 4 a of the first front surface side set guide 42 and the contact bar 4 a of the first back surface side set guide 44. The height of the contact bar 4a of the first back side set guide 44 is adjusted by the drawer moving device 41 so as to become horizontal upward.
As a result, as shown in FIG. 7A, one of the electrode plate installation regions on the back surface of the separator sheet S is the contact between the contact bar 4a of the first front surface side set guide 42 and the first back surface side set guide 44. Between the bar 4a, it is horizontally arranged upward. That is, in the present embodiment, the separator sheet S is folded by the folding device 4 including the first front surface side set guide 42 and the first rear surface side set guide 44 so that the electrode plate installation region on the back surface of the separator sheet S faces upward. Supported.

Subsequently, as shown in FIG. 7B, the control device 9 causes the adhesive coating device 53 to apply the adhesive to the electrode plate installation region of the separator sheet S directed upward.
Note that the adhesive is disposed in the same manner as the adhesive shown in FIG.

  In addition, when applying the adhesive, when the measurement result of the tension sensor 7 indicates that the tension acting on the separator sheet S is weak in the electrode plate installation region, the control device 9 pulls out to the drawer moving device 41. The part 31 is moved to the back side, and the set guide moving device 46 moves the contact bar 4a of the first back side set guide 44 further to the near side than the near side reference position, so that the separator sheet S in the electrode plate installation region. Control to increase the tension acting on

  In order to shorten the work time, the control device 9 holds the negative electrode plate D2 in the negative electrode plate arranging device 52 and waits when applying the adhesive, as shown in FIG. 7B. .

Subsequently, as shown in FIG. 8A, the control device 9 causes the negative electrode plate placement device 52 to place the negative electrode plate D2 in the electrode plate placement region.
Here, as described above, the separator sheet S is supported by the folding device 4 so that the electrode plate installation region in which the negative electrode plate D2 is disposed faces upward.
That is, in the present embodiment, the negative electrode plate D2 is disposed from above with respect to the electrode plate installation region facing upward.
Note that, after the step shown in FIG. 8A, the adhesive application device 53 may apply an adhesive to the periphery of the negative electrode plate D2, as in FIG. 5B.
And in order to prepare for a subsequent process, the control apparatus 9 will retract the 2nd back surface side set guide 45 to the set guide moving apparatus 46, after arrangement | positioning of the negative electrode plate D2 is complete | finished.

  Subsequently, as shown in FIG. 8 (b), the control device 9 causes the drawer moving device 41 to move the drawer 31 toward the far end of the rack gear rail 41a and synchronizes with this to set the guide. The moving device 46 moves the contact bar 4 a of the second front surface side set guide 43 from the front surface side of the separator sheet S above the first back surface side set guide 44.

Subsequently, as shown in FIG. 9A, the control device 9 causes the drawer portion moving device 41 to move the drawer portion 31 to the far end of the rack gear rail 41a and causes the set guide moving device 46 to move to the second surface. The contact bar 4a of the side set guide 43 is moved to the back side reference position.
At this time, the control device 9 sets the set guide moving device so that the front surface of the separator sheet S is horizontal upward in the region between the first back surface side set guide 44 and the second front surface side set guide 43. 46, the height of the contact bar 4a of the second surface side set guide 43 is adjusted.
As a result, as shown in FIG. 9A, one of the electrode plate installation regions on the surface of the separator sheet S is the contact between the contact bar 4a of the first back surface side set guide 44 and the second surface side set guide 43. Between the bar 4a, it is horizontally arranged upward.

Subsequently, the control device 9 causes the set guide moving device 46 to lower the first front surface side set guide 42, the second front surface side set guide 43, and the first back surface side set guide 44, and thereafter FIG. 9B. As shown in FIG. 3, the adhesive coating device 53 is made to apply an adhesive to the electrode plate installation region of the separator sheet S directed upward.
And the control apparatus 9 arrange | positions the positive electrode plate D1 to the positive electrode plate arrangement | positioning apparatus 51 with respect to an electrode plate installation area | region, as shown in FIG.

Here, in the process shown in FIG. 4B and the process shown in FIG. 9B, the first front surface side set guide 42 and the second front surface side set guide 43 are interchanged, and the first back surface side set guide 44. And the second backside set guide 45 are the same except that they are interchanged.
5A and 10, the first front surface side set guide 42 and the second front surface side set guide 43 are interchanged, and the first back surface side set guide 44 and the second back surface side. It is the same except that the set guide 45 is replaced.
That is, in the electrode material sheet manufacturing apparatus 1 of the present embodiment, the first front surface side set guide 42 and the second front surface side set guide 43 are interchanged in the height direction, and the first back surface side set guide 44 and the second back surface side set guide. The separator sheet S (that is, the electrode material sheet) on which the electrode plate D is installed is folded and accommodated in the case C while the guide 45 is replaced in the height direction.

  Then, when the case C is filled with the electrode material sheet, the control device 9 causes the cutting device 6 to cut the separator sheet S (that is, the electrode material sheet) and ends the operation.

According to the electrode material sheet manufacturing apparatus 1 of the present embodiment as described above, since the vertical conveying device 3 conveys the separator sheet S in the vertical direction, the installation space is compared with the case where the separator sheet S is always conveyed horizontally. Decrease.
On the other hand, according to the electrode material sheet manufacturing apparatus 1 of the present embodiment, the folding device 4 supports the installation region of the electrode plate D upward in the process of folding the separator sheet S. The electrode plate D can be installed on the facing surface. For this reason, according to the electrode material sheet manufacturing apparatus 1 of this embodiment, when attaching the electrode plate D to the separator sheet S, it can suppress that the position shift seen from the attachment direction arises.
Therefore, according to the electrode material sheet manufacturing apparatus 1 of this embodiment, the increase in the installation space required is suppressed, improving the positioning accuracy of the positive electrode plate D1 and the negative electrode plate D2 with respect to the separator sheet seen from the attachment direction. be able to.

Further, in the electrode material sheet manufacturing apparatus 1 of the present embodiment, the folding device 4 includes a surface side set guide (a first surface side set guide 42 and a second surface side set guide 43) that is brought into contact with the surface of the separator sheet S. , A back side set guide (first back side set guide 44 and second back side set guide 45) that is in contact with the back side of the separator sheet S, and a set guide movement that moves the front side set guide and the back side set guide The apparatus 46 is provided, and the installation area of the electrode plate D of the separator sheet S is directed upward between the front surface side set guide and the rear surface side set guide.
In the present embodiment employing such a configuration, as shown in the above-described operation, the installation area of the electrode plate D of the separator sheet S without greatly moving the front surface side set guide and the rear surface side set guide in the horizontal direction. Can be directed upwards.
Therefore, according to the electrode material sheet manufacturing apparatus 1 of the present embodiment, an increase in installation space can be further suppressed.

Moreover, in the electrode material sheet manufacturing apparatus 1 of the present embodiment, the folding device 4 includes a plurality of front surface side set guides and back surface side set guides.
In the present embodiment that employs such a configuration, as shown in the above-described operation, the upper and lower sides of the plurality of front surface side set guides are interchanged, and the upper and lower surfaces of the plurality of back surface side set guides are interchanged efficiently. S can be folded.

Further, in the electrode material sheet manufacturing apparatus 1 according to the present embodiment, the folding device 4 moves the drawer 31 that is a part of the vertical transport device 3 so that the vertical transport path of the separator sheet S is perpendicular to the surface of the separator sheet S. A drawer moving device 41 (path displacement device) that is displaced in the direction is provided.
In the present embodiment employing such a configuration, when the separator sheet S is folded, the horizontal movement distance of the front surface side set guide and the rear surface side set guide can be suppressed by displacing the path of the separator sheet S. Furthermore, an increase in installation space can be suppressed. In addition, in order to attach the electrode plate accurately with a set guide, it contributes to generating a suitable tension necessary for realizing a horizontal plane having a desired constant section length on a continuous separator. Is possible.

Moreover, according to the electrode material sheet manufacturing apparatus 1 of this embodiment, since the positive electrode plate D1 is installed on the surface of the separator sheet S and the negative electrode plate D2 is installed on the back surface of the separator sheet S, as shown in FIG. Of course, only one separator sheet S is interposed between the positive electrode plate D1 and the negative electrode plate D2. For this reason, the separator sheet S between the positive electrode plate D1 and the negative electrode plate D2 can be minimized.
Therefore, by using the electrode material sheet manufactured by the electrode material sheet manufacturing apparatus 1 of the present embodiment, the accommodation efficiency of the positive electrode plate D1 and the negative electrode plate D2 in the package is improved, and the performance of the secondary battery is improved. It becomes possible.

  As mentioned above, although preferred embodiment of this invention was described referring drawings, this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

For example, in the said embodiment, the positive electrode plate D1 was installed previously with respect to the separator sheet S, and the structure which installs the negative electrode plate D2 later was demonstrated.
However, the present invention is not limited to this. For the separator sheet S, the negative electrode plate D2 may be installed first, and the positive electrode plate D1 may be installed later. In this case, the negative electrode plate D2 is installed on the surface of the separator sheet S, and the positive electrode plate D1 is installed on the back surface.

For example, as shown in FIG. 12A, the fixing device 10 may be installed in the electrode material sheet manufacturing apparatus 1 of the above embodiment.
As shown in FIG. 12A, the fixing device 10 includes, for example, a front side set guide (a first front side set guide 42 shown in FIG. 12A and a second front side set guide 43 omitted in FIG. 12). When the electrode plate D is installed on the separator sheet S under the control of the control device 9, the separator sheet S is pressed against the contact bar 4 a of the first surface side set guide 42. And fix.

In addition, as shown to Fig.12 (a), the fixing device 10 drives the press pad 10a which presses the separator sheet S directly, the bending arm part 10b which moves the said press pad 10a, and the said bending arm part 10b. And a drive unit (not shown).
Note that the above-described driving unit (not shown) drives the pressing pad 10a by pushing and pulling a rod pivotally supported on the base end of the bending arm unit 10b, for example.

  According to the electrode sheet manufacturing apparatus 1 that employs the configuration shown in FIG. 12A, the separator sheet S is pressed against the contact bar 4a of the front-side set guide by the fixing device 10, and therefore the electrode plate D When the is installed on the separator sheet, it is possible to prevent the tension acting on the separator sheet S from being loosened, and to accurately install the electrode plate D (see FIG. 12B).

Further, for example, as shown in FIG. 13, a press device 11 and a pick stick device 12 may be installed in the electrode material sheet manufacturing apparatus 1 of the above embodiment.
The press device 11 presses the opposed regions of the folded separator sheet S, and includes an upper press roll 11a and a lower press roll 11b that sandwich and press the opposed regions, and these upper press rolls 11a. And a moving device (not shown) that moves the lower press roll 11b.
The pick stick device 12 supports the separator sheet S separately from the front surface side set guide or the rear surface side set guide. The pick stick device 12a has a smaller diameter than the contact bar 4a, and moves the pick stick 12a (not shown). And a moving device. Note that two pick sticks 12a arranged in a straight line form a pair, and the pair of pick sticks 12a are moved closer to or away from each other by the moving device.

In the electrode material sheet manufacturing apparatus 1 having such a configuration, for example, after an adhesive is applied around the positive electrode plate D1, a pair of picks is used instead of the first surface side set guide 42 as shown in FIG. The sticks 12a and 12a support the separator sheet S.
In this state, as shown in FIG. 14 (a), the opposing region of the separator sheet S is pressed between the upper press roll 11a and the lower press roll 11b, and then the first surface side as shown in FIG. 14 (b). The set guide 42 is retracted.
Then, as shown to Fig.15 (a), the upper side press roll 11a and the lower side press roll 11b are pushed forward, and the opposing area | region of the separator sheet S is pressed together from the upper and lower sides. Thereafter, as shown in FIG. 15B, while holding the separator sheet S with another pick stick 12a, 12a, the upper press roll 11a and the lower press roll 11b are pulled back to support the separator sheet S first. The picksticks 12a and 12a that have been separated are separated.
After that, as shown in FIG. 16, the upper press roll 11 a and the lower press roll 11 b are separated from each other, and the opposing region bonded by feeding the separator sheet S is accommodated in the case C.
Of course, these operations are performed by moving the press device 11, the pick stick device 12, and the like under the control of the control device 9.

  According to the electrode material sheet manufacturing apparatus 1 including such a press device 11, the opposing region of the separator sheet S can be accurately bonded without causing a positional shift, and therefore, the performance of the secondary battery is further improved. Can do.

Even if the pick stick 12a is not provided, for example, if the contact bar 4a is configured to be divided in the length direction, the opposing region of the separator sheet S can be similarly bonded by the press device 11.
For example, as shown in FIG. 17A, after the adhesive is applied around the positive electrode plate D1, as shown in FIG. 17B, the upper press roll 11a and the lower press roll 11b are pushed forward.
Thereafter, as shown in FIG. 18, the contact bar 4a of the first front set guide 42 is divided and retracted, the upper press roll 11a and the lower press roll 11b are pulled back (see FIG. 19), and finally the upper press roll. 11a and the lower press roll 11b are separated from each other, and the opposing region bonded by sending out the separator sheet S is accommodated in the case C.

Further, it is possible to use only the pick stick device 12 without using the press device 11.
Specifically, after the pair of pick sticks 12a and 12a support the separator sheet S instead of the first front surface side set guide 42, the contact bar 4a of the first front surface side set guide 42 is retracted, and the first back surface The opposing region of the separator sheet S is bonded together by the movement of the contact bar 4a of the side set guide 44.
In such a case, since the separator sheet S is supported by the pair of pick sticks 12a, 12a, when the contact bar 4a of the first surface side set guide 42 is retracted, an adhesive is applied to the contact bar 4a. It can prevent adhesion.

  In the above embodiment, for example, a cylinder or a ball screw screw may be used separately in order to increase the moving speed of the front surface side set guide and the rear surface side set guide.

  Moreover, in the said embodiment, you may provide the guide part which guides the middle area | region of the separator sheet S which falls.

  Moreover, in the said embodiment, you may provide separately the press apparatus which presses the separator sheet S accommodated in case C, and pushes in in case C.

  Further, in the above embodiment, the minimum necessary adhesive is applied to the separator sheet S and the electrode plate D is attached to the separate sheet S. The electrode plate D may be attached to the separate sheet S by other methods as long as the plate D can be prevented from being displaced. For example, after placing the electrode plate D on the separator sheet S, the four corners of the electrode plate D on the separator sheet S are covered like a pocket using a film made of the same material as the separator sheet S, and the electrode You may adhere | attach the edge part of this film to the separator sheet S with an adhesive agent, avoiding the board D. FIG. Also in this case, it is preferable to take into consideration that the portion that becomes pocket-shaped (the range in which the electrode plate D is covered with the film) has a minimum area necessary for supporting the electrode plate D.

  DESCRIPTION OF SYMBOLS 1 ... Electrode material sheet manufacturing apparatus, 2 ... Unwinding device, 3 ... Vertical conveyance device, 4 ... Folding device, 41 ... Drawer moving device (path displacement device), 42 ... First surface side set Guide (one surface side set guide), 43 ... second surface side set guide (one surface side set guide), 44 ... first back surface side set guide (other surface side set guide), 45 ... second back surface side Set guide (set guide on the other side), 46 …… Set guide moving device, 5 …… Electrode plate installation device

Claims (6)

A vertical conveyance device that vertically conveys a separator sheet that forms an electrode material sheet together with an electrode plate in a vertical posture in which a surface on one side and a surface on the other side face a horizontal direction;
The separator sheet in the vertical posture conveyed by the vertical conveying device is folded and accommodated in a case, and the electrode plate on the separator sheet is supported upward in the process of folding the separator sheet. A folding device to
An electrode material sheet manufacturing apparatus comprising: an electrode plate installation device that installs the electrode plate in an installation region of the electrode plate directed upward by the folding device. The folding device is
One surface side set guide in contact with one surface of the separator sheet, the other surface side set guide in contact with the other surface of the separator sheet, the one surface side set guide and the other surface A set guide moving device for moving the side set guide,
The electrode material sheet manufacturing apparatus according to claim 1, wherein an installation region of the electrode plate of the separator sheet is directed upward between the one surface side set guide and the other surface side set guide.   The electrode material sheet manufacturing apparatus according to claim 2, wherein the folding device includes a plurality of the one surface side set guide and the other surface side set guide.   The said folding apparatus is provided with the path | route displacement apparatus which displaces the vertical conveyance path | route of the said separator sheet to the orthogonal | vertical direction with respect to the surface of the said separator sheet by moving at least one part of the said vertical conveyance apparatus. Or the electrode material sheet manufacturing apparatus of 3.   The folding device is a fixing device that presses and fixes the separator sheet against at least one of the one surface side set guide and the other surface side set guide when the electrode plate is installed on the separator sheet. 5. The electrode material sheet manufacturing apparatus according to claim 2, comprising:   The electrode material sheet manufacturing apparatus according to any one of claims 1 to 5, further comprising a pressing device that presses opposed regions of the folded separator sheet.