JP6107027B2 - Manufacturing method and manufacturing apparatus for sheet laminate housing material - Google Patents

Description

  The present invention relates to a manufacturing method and a manufacturing apparatus for a sheet laminate housing material, for example, a manufacturing method and a manufacturing apparatus for a sheet stack housing material in which a sheet stack is accommodated in a film exterior material.

  First, the structure of a general sheet laminated body accommodation material is demonstrated.

  The structure of a general sheet | seat laminated body accommodation material is comprised as FIG. 9 and FIG. 10 show, for example.

  As shown in FIG. 9, the sheet laminate housing material 500 includes a sheet laminate 510 and a pair of films 521 and 522. The sheet laminate 510 is configured by laminating a positive electrode connected to the positive terminal 511 and a negative electrode connected to the negative terminal 512 via an ion permeable film.

  As shown in FIG. 10, a pair of films 521 and 522 constitute a bag-shaped film exterior material 520. The film exterior material 520 has a liquid injection port 523.

  In the sheet laminate housing material 500, after the sheet laminate 510 is accommodated in the film exterior material 520, an electrically conductive liquid is supplied from the liquid supply port 523 into the film exterior material 520. Completed by sealing. The positive electrode terminal 511 and the negative electrode terminal 512 are exposed outside the film exterior member 520 as shown in FIGS. 9 and 10.

  In addition, regarding the supply of the liquid having electrical conductivity, a sheet laminated body accommodation material in which three sides are sealed is prepared, and the unsealed side (liquid supply port 523) is opened to a predetermined amount. Patent Documents 1 and 2 disclose a technique for supplying the liquid having the electrical conductivity to the bottom of the film exterior member 520 so as not to contact the upper surface of the sheet laminate 510 and the ion permeable membrane. In the techniques described in Patent Document 1 and Patent Document 2, an electrically conductive liquid gradually permeates upward from below the sheet laminate 510. The liquid having electrical conductivity permeates from each end of the sheet laminate 510 (upper surface, side surface and lower surface of the sheet laminate 510). Here, the liquid having electrical conductivity penetrates only from the lower surface and side surface of the sheet laminate 510 in contact therewith. However, since the liquid contact range where the electrically conductive liquid is in contact with the sheet laminate 510 is small, it takes time to penetrate the electrically conductive liquid into the sheet laminate 510. It was.

  Next, the manufacturing process of the related sheet laminated body accommodation material is demonstrated.

  FIG. 11 and FIG. 12 are diagrams showing a first example of a manufacturing process of a related sheet laminate housing material. In addition, in each figure of Fig.11 (a), FIG.11 (b), FIG.12 (c), and FIG.12 (d), a front view is shown on the left side and sectional drawing of the center part vicinity of a front view is shown on the right side. .

  In the manufacturing process of the sheet laminate housing material shown in FIGS. 11 and 12, a film in which the sheet laminate 510 is housed in order to reduce the remaining gas by reducing the gap between the positive electrode, the negative electrode, and the ion permeable membrane. The packaging material 520 is sandwiched between a pair of pressing plates (parallel plates) 700 a and 700 b, and a liquid having electrical conductivity is gradually supplied into the film packaging material 520, so that the liquid having electrical conductivity is immersed in the sheet laminate 510. I'm embezzled.

  As shown in FIG. 11A, first, the sheet laminate 510 is accommodated in the film exterior member 520 in a state where the positive electrode terminal 511 and the negative electrode terminal 512 are exposed outside the film exterior member 520. 11A, the main surface of the film exterior member 520 in which the sheet laminate 510 is accommodated is sandwiched between a pair of pressing plates (parallel flat plates) 700a and 700b.

  In a state where the film sheathing material 520 is sandwiched between the pair of pressing plates (parallel flat plates) 700a and 700b, a small amount of a liquid having a predetermined amount of electrical conductivity is provided so that the liquid having electrical conductivity does not leak from the film sheathing material 520. Is supplied from the liquid supply nozzle 600 into the film exterior material 520.

  Next, as shown in FIG. 11B, the penetration of the electrically conductive liquid starts from the top of the sheet laminate 510 and is directed in the lateral direction of the sheet laminate 510 (in the direction of the arrow on the page). As a result, the infiltrating area SY of the liquid having electrical conductivity expands. In FIGS. 11 and 12, the soaking area SY of the sheet laminate 510 is indicated by hatching. On the other hand, the non-immersed area SN of the sheet laminate 510 is shown in colorless.

  Next, as shown in FIG. 12C, the penetration of the electrically conductive liquid starts from the top of the sheet laminate 510 and then gradually spreads in the lateral direction. (See the arrow in FIG. 12C). Thereafter, the liquid having electrical conductivity flows from the side surface of the sheet laminate 510 to the bottom side and accumulates at the bottom of the sheet laminate 510.

  Finally, as shown in FIG. 12D, the liquid having electrical conductivity permeates from the bottom side of the sheet laminate 510. Then, the electrically conductive liquid penetrates from the four sides of the sheet laminate 500.

  Next, another example of the manufacturing process of the related sheet laminate housing material will be described.

  FIG. 13: is a figure which shows the 2nd example of the manufacturing process of the related sheet laminated body accommodation material. In each figure of Drawing 13 (a)-(c), a front view is shown on the left side, and a sectional view near the central part of a front view is shown on the right side.

  In the manufacturing process of the sheet laminated body accommodation material shown in FIG. 13, in order to eliminate wrinkles of the ion permeable membrane and prevent bubbles from remaining in the ion permeable membrane, a pair of pressing plates (parallel flat plates) 700a and 700b. The liquid having electrical conductivity is immersed in the sheet laminate 510 while gradually moving the. This controls the height of the liquid level of the electrically conductive liquid and the penetration of the electrically conductive liquid into the sheet laminate 510.

  First, as illustrated in FIG. 13A, first, the sheet laminate 510 is accommodated in the film exterior member 520 with the positive electrode terminal 511 and the negative electrode terminal 512 exposed to the outside of the film exterior member 520. Then, the liquid ES having electrical conductivity is supplied into the film exterior material 520 at a time. As a result, as shown in FIG. 13A, the liquid-immersed area SY having electrical conductivity spreads from the bottom surface to the side surface of the sheet laminate 520.

  Next, as shown in FIG. 13B, the main surface of the film exterior member 520 is sandwiched between a pair of pressing plates (parallel flat plates) 700a and 700b and moved. As a result, as shown in FIG. 13B, the liquid-immersed area SY that has electrical conductivity extends from the bottom surface to the top surface of the battery element 520 to four sides.

  As shown in FIG. 13 (c), the main surface of the film exterior member 520 is further moved upward by moving the pair of pressing plates (parallel flat plates) 700a and 700b, so that the entire main surface of the film exterior member 520 is paired with a pair of retainers. Press with the plates 700a, 700b. As a result, as shown in FIG. 13C, the electrically conductive liquid ES penetrates to the vicinity of the central portion of the sheet laminate 520, and the penetration area SY of the electrically conductive liquid ES is expanded. To do.

  In the method for manufacturing the sheet laminate housing material illustrated in FIG. 13, the increase in the electrically conductive liquid ES corresponds to the increase in the sandwiching position between the pair of pressing plates 700a and 700b. Then, when the rising speed of the liquid ES having electrical conductivity is appropriate, the penetration of the liquid ES having electrical conductivity into the sheet laminate 510 is gradually advanced from below to above the sheet laminate 510. Is possible. As a result, the penetration region SY of the electrically conductive liquid is less likely to surround the non-immersion region SN, and the occurrence of wrinkles in the ion permeable membrane can be reduced. Furthermore, the penetration time of the electrically conductive liquid ES into the sheet laminate 510 can be shortened, and the electrically conductive liquid ES can be efficiently immersed into the sheet laminate 510.

  Note that, as a technique related to the present invention, matters relating to the problem of wrinkling of the ion permeable membrane are disclosed in Patent Document 2, Patent Document 3, and Patent Document 4.

JP 2002-298833 A JP-A-2005-93261 JP 2005-222787 A JP 2009-146602 A

  However, in the method for manufacturing the sheet laminate housing material shown in FIGS. 11 and 12, the liquid having electrical conductivity soaks from the four directions of the upper surface, the side surface, and the lower surface of the sheet laminate 510. At this time, the volume of the ion permeable membrane increases due to the penetration of the electrically conductive liquid, and the increased portion gradually gathers near the center of the sheet laminate 510. And after supply of the liquid which has electroconductivity is completed, there existed a problem that the part which the volume increased among the ion permeable films remains as a wrinkle.

  Further, in the method for manufacturing the sheet laminate housing material shown in FIG. 13, the penetration of the electrically conductive liquid ES is quick on the side surface side of the sheet laminate 510, and the entire amount of the electrically conductive liquid ES is filmed. When supplied into the exterior material 520, the electrically conductive liquid ES soaks into the sheet laminate 510 to the upper side. As shown in FIG. 13B, the speed at which the electrically conductive liquid ES rises on the side surface of the sheet laminate 510 is such that the electrically conductive liquid moves toward the center of the sheet laminate 510. Since it is faster than the penetration rate, the penetration of the liquid having electrical conductivity proceeds significantly on the side surface side of the sheet laminate 510. For this reason, in this manufacturing method, the liquid-impregnated region YS having electrical conductivity surrounds the non-immersed region YN, wrinkles are generated in the ion-permeable film, and bubbles also remain. There was a problem.

  Due to the wrinkles of the ion permeable membrane, the distance between the electrodes becomes non-uniform, the functional characteristics as the sheet laminate housing material become poor, or bubbles remain in the wrinkled part of the ion permeable membrane and the sheet laminate is contained The functional characteristics of the material may be poor. In addition, wrinkles of the ion permeable membrane and remaining bubbles may cause defects in appearance such as protruding outside the film exterior material 520 and coming out as protrusions.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a method and apparatus for manufacturing a sheet laminate housing material capable of suppressing the generation of wrinkles and remaining bubbles in the sheet laminate. Is to provide.

  The method for producing a sheet laminate housing material of the present invention includes a step of inserting a sheet laminate including a sheet into which at least a liquid can be immersed into a bag-shaped film exterior material, and the sheet laminate is accommodated. The bottom of the bag of the film sheathing material is vertically downward and the bag-shaped opening of the film sheathing material is vertically upward, and the stacking direction of the sheet laminate is arranged in a horizontal direction; and The liquid is supplied in multiple times from the opening of the bag of the film exterior material, and each of the multiple times of supplying the liquid, a pair of main surfaces facing each other in the film exterior material from the outside A pair of pressing plates sandwiched between the sheet stack and the liquid supplied into the film sheathing material is raised from the bottom side of the film sheathing material toward the opening side, and the liquid is placed into the sheet. A liquid soaking step for soaking in the layered body, and at the first time of the liquid soaking step, the region sandwiched between the pair of pressing plates is only part of the pair of main surfaces of the film exterior material It is.

  The apparatus for producing a sheet laminate housing material according to the present invention includes a film packaging material holding that holds a bag-shaped film packaging material having a liquid supply port for supplying a liquid so that the liquid supply port faces upward in the vertical direction. A plurality of parts, a liquid supply nozzle that can supply the liquid from the liquid supply port, and a pair of main surfaces that are opposed to each other among the film exterior materials held by the film exterior material holding portion. And a plurality of drive units that drive the plurality of presser plates.

  According to the manufacturing method and the manufacturing apparatus of the sheet laminate housing material according to the present invention, it is possible to suppress the generation of wrinkles and bubbles remaining in the sheet laminate.

It is a figure which shows the manufacturing process of the sheet | seat laminated body accommodation material in embodiment of this invention. It is a figure which shows the manufacturing process of the sheet | seat laminated body accommodation material in embodiment of this invention. It is a figure which shows a part of manufacturing process of the sheet | seat laminated body accommodation material in embodiment of this invention. It is a perspective view which shows the structure of the manufacturing apparatus of the sheet | seat laminated body accommodation material in embodiment of this invention. It is a disassembled perspective view of a sheet laminated body accommodation material. It is a perspective view which shows the structure of a sheet | seat laminated body accommodation material. It is sectional drawing which shows the structure of a sheet | seat laminated body accommodation material. It is a perspective view which shows the structure of the modification of the manufacturing apparatus of the sheet | seat laminated body accommodation material in embodiment of this invention. It is a disassembled perspective view of a general sheet laminated body accommodation material. It is a perspective view which shows the structure of a general sheet | seat laminated body accommodation material. It is a figure which shows the 1st example of the manufacturing process of a related sheet laminated body accommodation material. It is a figure which shows the 1st example of the manufacturing process of a related sheet laminated body accommodation material. It is a figure which shows the 2nd example of the manufacturing process of a related sheet laminated body accommodation material.

  The manufacturing method of the sheet | seat laminated body accommodation material 100 in embodiment of this invention is demonstrated based on figures.

  FIG. 1 and FIG. 2 are diagrams showing a manufacturing process of the sheet laminate housing material 100 in the embodiment of the present invention. FIG. 3 is a diagram illustrating a part of the manufacturing process of the sheet laminate housing material 100. FIG. 4 is a perspective view showing the configuration of the manufacturing apparatus 200 for the sheet laminate housing material 100.

  Here, after describing the configuration of the sheet laminate housing material 100, a method for manufacturing the sheet laminate housing material 100 will be described.

  FIG. 5 is an exploded perspective view of the sheet laminate housing material 100. FIG. 6 is a perspective view showing the configuration of the sheet laminate housing material 100. FIG. 7 is a cross-sectional view illustrating a configuration of the sheet laminate housing material 100.

  As shown in FIG. 5, the sheet laminate housing material 100 includes a sheet laminate 110 and a pair of films 121 and 122. The sheet laminate 110 has a positive terminal 111 and a negative terminal 112.

  As shown in FIG. 6, a pair of films 121 and 122 constitute a bag-shaped film exterior material 120. The film exterior member 120 has a liquid supply port 123. The liquid supply port 123 is provided to supply a liquid having electrical conductivity.

  Moreover, as FIG. 5-7 shows, the film exterior material 120 has a pair of main surface 120a, 120b which mutually opposes. Further, the bottom portion 120 c of the film exterior material 120 refers to a side portion of the film exterior material 120 opposite to the liquid supply port 123.

  In the sheet laminate housing material 100, after the sheet laminate 110 is accommodated in the film exterior material 120, an electrically conductive liquid is supplied from the liquid supply port 123 into the film exterior material 120. Completed by sealing. The positive electrode terminal 111 and the negative electrode terminal 112 are exposed outside the film sheathing material 520 as shown in FIGS. 6 and 7.

  As shown in FIGS. 5 and 7, the sheet laminate 110 includes a positive electrode terminal 111, a negative electrode terminal 112, a plurality of positive electrodes 113, a plurality of negative electrodes 114, and an ion permeable film 115. Yes. Here, the ion permeable membrane 115 corresponds to the first sheet of the present invention, and is a first sheet that is a sheet into which a liquid can be immersed. Further, the positive electrode 113 and the negative electrode 114 correspond to the second sheet of the present invention, and are sheets that take a longer time to soak liquid than the first sheet, or soak liquid. It is a sheet that cannot be removed.

  The positive terminal 111 is connected to each positive electrode 113.

  The negative terminal 112 is connected to each negative electrode 114.

  The ion permeable membrane 115 is provided between the positive electrode 113 and the negative electrode 114. That is, the sheet laminate 110 is configured by laminating the positive electrode 113 connected to the positive terminal 111 and the negative electrode 114 connected to the negative terminal 112 via the ion permeable film 115. Therefore, the sheet laminate 110 includes a first sheet (a sheet into which liquid can be immersed) and a second sheet (a sheet that takes longer to infiltrate the liquid than the first sheet). Alternatively, sheets that cannot be soaked with liquid) are alternately laminated.

  The configuration of the sheet laminate housing material 100 has been described above.

  Next, the structure of the manufacturing apparatus 200 of the sheet | seat laminated body accommodation material 100 is demonstrated using FIG.

  As shown in FIG. 4, the manufacturing apparatus 200 for the sheet laminate housing material 100 includes a base part 210, a film exterior material holding part 220, a pair of first pressing plates 230, and a pair of second pressing plates. 240, a first driving unit 250, and a second driving unit 260. FIG. 4 shows the vertical direction G. The first pressing plate 230 and the second pressing plate 240 correspond to each of the pressing plates divided into a plurality. When the first pressing plate 230 and the second pressing plate 240 are combined, one pressing plate is formed.

  The base part 210 is formed in a rectangular flat plate shape. Another member of the sheet laminate housing material manufacturing apparatus 200 is mounted on the base portion 210.

  The film packaging material holding unit 220 holds a bag-shaped film packaging material 120 (see FIG. 6) having a liquid supply port 123 for supplying a liquid having electrical conductivity. At this time, the film exterior material holding unit 220 can hold the liquid supply port 123 so that the liquid supply port 123 faces upward in the vertical direction G. In FIG. 4, the film exterior material 120 in which the sheet laminate 110 is accommodated is indicated by a two-dot chain line.

  As shown in FIG. 4, the film exterior material holding part 220 has two pairs of support pillars 221a and 221b. And the both ends from which the positive electrode terminal 111 and the negative electrode terminal 112 were exposed among the film exterior materials 120 are hold | maintained between a pair of support pillars 221a and 221b.

  The pair of first pressing plates 230 includes a part of a pair of main surfaces 120 a and 120 b (see FIGS. 5 to 7) facing each other in the film exterior material 120 held by the film exterior material holding unit 220. Hold from outside. More specifically, as shown in FIG. 4, the pair of first pressing plates 230 are arranged on the base portion 210 so as to face each other. In addition, the first pressing plate 230 is formed so that the width thereof becomes narrower as the distance from the base portion 210 increases. In other words, the pair of first pressing plates 230 gradually move from the bottom of the film exterior material 120 toward the center portion of the pair of main surfaces 120a and 120b of the film exterior material 120 held by the film exterior material holding portion 220. Are formed so as to sandwich a region where the width becomes narrower. In addition, the bottom part 120c of the film exterior material 120 refers to a side part on the opposite side to the liquid supply port 123 of the film exterior material 120, and refers to a base side part in the vertical direction G. In the present embodiment, the shape of the first pressing plate 230 is a triangle.

  The pair of second pressing plates 240 are part of the pair of main surfaces 120a and 120b (see FIGS. 5 to 7) facing each other in the film exterior material 120 held by the film exterior material holding portion 220. Press the outside from outside. That is, the pair of second pressing plates 240 presses the region other than the region pressed by the first pressing plate 230 from the outside, out of the pair of main surfaces 120a, 120b of the film exterior member 120. More specifically, as shown in FIG. 4, the pair of second pressing plates 240 are disposed on the base portion 210 so as to face each other. Further, the second pressing plate 240 is formed in a shape obtained by removing a triangular region corresponding to the first pressing plate 230 from a rectangular plate. By fitting the first pressing plate 230 and the second pressing plate 240 together, the entire surface of the pair of main surfaces 120a and 120b of the film exterior material 120 can be pressed from the outside.

  The first driving unit 250 drives the first pressing plate 230. More specifically, the first drive unit 250 includes a first pressing plate in a direction substantially perpendicular to the pair of main surfaces 120a and 120b of the film exterior member 120 held by the film exterior material retaining portion 220. 230 is moved. The first drive unit 250 is configured by, for example, an electric motor.

  The second driving unit 260 drives the second pressing plate 240. Here, the guide portion 261 is provided to control the moving direction of the second pressing plate 240. Specifically, the guide part 261 moves the second pressing plate 240 in a direction substantially perpendicular to the pair of main surfaces 120a and 120b of the film exterior material 120 held by the film exterior material holding part 220. Is provided. That is, the second driving unit 260 is configured to extend in the direction substantially perpendicular to the pair of main surfaces 120a and 120b of the film exterior material 120 held by the film exterior material holding portion 220 along the guide portion 261. The holding plate 240 is moved. The second drive unit 260 is configured by, for example, an electric motor.

  Further, the manufacturing apparatus 200 for the sheet laminate housing material 100 further includes a liquid supply nozzle. The liquid supply nozzle will be described in detail in the description of the method for manufacturing the sheet laminate housing material described later.

  The configuration of the manufacturing apparatus 200 for the sheet laminate housing material 100 has been described above.

  Next, the manufacturing method of the sheet | seat laminated body accommodation material 100 is demonstrated concretely mainly using FIG. 1 (a-1) to (a-2), FIG. 1 (b-1) to (b-2), FIG. 2 (c-1) to (c-2), and FIG. 2 (d-1). ) To (d-2) are front views. 1A-3, FIG. 1B-3, FIG. 2C-3, and FIG. 2D-3 are cross-sectional views near the center of the front view. 1 (a-1), FIG. 1 (b-1), FIG. 2 (c-1), and FIG. 2 (d-1) are diagrams showing the liquid ES having electrical conductivity in the sheet laminate 110. FIG. The soaking area SY, which is a soaked area, and the non-soaking area SN, which is the area where the electrically conductive liquid ES is not soaked in the sheet laminate 110, are shown separately. Yes. 1A-2, FIG. 1B-2, FIG. 2C-2, and FIG. 2D-2 show states of the liquid ES having electrical conductivity.

  As shown in FIG. 3, first, the sheet laminate 110 is inserted and accommodated in the film exterior member 120 with the positive electrode terminal 111 and the negative electrode terminal 112 exposed outside the film exterior member 120. This process corresponds to the sheet laminate housing step of the present invention.

  As shown in FIG. 1 (a), the bottom of the bag of the film exterior member 120 in which the sheet laminate 110 is accommodated is vertically below the bag-like liquid supply port 123 (opening portion) of the film exterior member 120. It arrange | positions so that it may face vertically upward and the lamination direction of the sheet | seat laminated body 110 may turn into a horizontal direction. This process corresponds to the sheet laminate arrangement step of the present invention.

  More specifically, as shown by a two-dot chain line in FIG. 4, the film exterior material 120 in which the sheet laminate 110 is accommodated is attached to the film exterior material holding portion 220 of the manufacturing apparatus 200.

  Next, the liquid ES having electrical conductivity is supplied into the film exterior member 120 to a position in contact with the bottom 118 of the sheet laminate 110. The process shown in FIG. 1A is included in the first time (first time) of the liquid immersion process of the present invention.

  Here, a method for supplying the electrically conductive liquid ES will be described with reference to FIG.

  In a state where the film sheathing material holding unit 220 of the manufacturing apparatus 200 holds the film sheathing material 120, the electrically conductive liquid ES is prevented from coming into contact with the upper surface of the sheet laminate 110 and the ion permeable membrane 115 (see FIGS. 3 and 3). 1 (a-3).), The liquid ES having electrical conductivity is supplied into the film exterior member 120 from the liquid supply port 123 up to a position in contact with the bottom surface 118 of the sheet laminate 110. At this time, the liquid supply nozzle 300 is used to supply the electrically conductive liquid ES. The liquid supply nozzle 300 is configured such that the electrically conductive liquid ES can be supplied into the film exterior member 120 from the liquid supply port 123 in a plurality of times.

  Further, as shown in FIG. 1A-2, the liquid surface (two-dot chain line) of the electrically conductive liquid ES is located in the vicinity of the bottom 118 of the sheet laminate 110. At this time, as shown in FIG. 1A-1, the liquid-immersed area SY having electrical conductivity is only the bottom of the sheet laminate 110. In this way, by limiting the supply amount of the liquid ES having electrical conductivity, it is possible to prevent the liquid soaking area SY having electrical conductivity from enclosing the non-soaking area SN. That is, in the manufacturing method shown in FIG. 13, as shown in FIG. 13A, the liquid level of the electrically conductive liquid ES far exceeds the bottom of the sheet laminate 510 and reaches the vicinity of the center. ing. In this state, as shown in the left diagram of FIG. 13A, the liquid-immersed area SY that has electrical conductivity has already extended to the upper surface of the sheet laminate 510. As a result, in the manufacturing method shown in FIG. 13, a phenomenon has occurred in which the liquid-impregnated region SY encloses the non-immersed region SN. On the other hand, in the manufacturing method of the present invention, the supply amount of the liquid ES having electrical conductivity is limited at the first time (first time) of the liquid soaking process. As shown in FIG. 5, the liquid-immersed region SY having electrical conductivity is only the bottom of the sheet laminate 110. For this reason, it is possible to prevent the liquid soaking area SY having electrical conductivity from enclosing the non-soaking area SN.

  Next, as shown in FIG. 1B, the pair of first pressing plates 230 of the manufacturing apparatus 200 is driven by the first driving unit 150, and the pair of main surfaces 120 a and 120 b of the film exterior member 120 are driven. A part is sandwiched between the pair of first pressing plates 230. In addition, the process shown in FIG.1 (b) is included in the first time (1st time) of the liquid immersion process of this invention.

  At this time, the pair of first pressing plates 230 is configured to sandwich an area of the pair of main surfaces 120a and 120b of the film exterior member 120 that gradually decreases in width from the bottom to the center of the film exterior 120. Has been. In FIG. 1B-2, a pair of pressing plates 230 are displayed for convenience of explanation. By sandwiching the film sheathing material 120 between the pair of press plates 230 having such a shape, as shown in FIG. 1 (b-1), the liquid ES having electrical conductivity penetrates into the sheet laminate 510. Is promoted by utilizing capillary action. As a result, as shown in FIG. 1 (b-1), the permeation range SY of the electrically conductive liquid spreads upward with the center portion (FIG. 1 (b-1) the middle portion in the horizontal direction of the paper surface) as the center. .

  Next, as illustrated in FIG. 2C, the first pressing plate 230 is separated from the film exterior member 120 by driving the first driving unit 250, and then the remaining liquid ES having electrical conductivity is used. Is supplied from the liquid supply port 123 into the film exterior member 120. In addition, the process shown in FIG.1 (c) is included in the last time (2nd time) of the liquid immersion process of this invention.

  At this time, in a state where the film sheathing material holding unit 220 of the manufacturing apparatus 200 holds the film sheathing material 120, the electrically conductive liquid ES is prevented from contacting the upper surface of the sheet laminate 110 and the ion permeable membrane 115 (see FIG. 3 and FIG. 2 (c-3).) Using the liquid supply nozzle 300, the remainder of the electrically conductive liquid ES is supplied into the film exterior member 120 from the liquid supply port 123. Thereby, as shown in FIG. 2 (c-2), the liquid level of the electrically conductive liquid ES rises to the vicinity of the center of the sheet laminate 110. In addition, as shown in FIG. 2C-1, the liquid-immersed area SY that has electrical conductivity extends to the vicinity of both ends of the sheet laminate 110 (see arrows).

  Next, as shown in FIG. 2D, the pair of first pressing plates 230 and second pressing plates 240 of the manufacturing apparatus 200 are simultaneously driven by the first driving unit 250 and the second driving unit 260. And the whole area | region of a pair of main surface 120a, 120b of the film exterior material 120 is pinched | interposed with the combination of a pair of 1st pressing board 230 and the 2nd pressing board 240. The process shown in FIG. 2 (d) is included in the final round (second round) of the liquid immersion process of the present invention.

  At this time, the penetration of the electrically conductive liquid ES is promoted from the side of the sheet laminate 110 (both ends in the left-right direction of the sheet laminate 110 shown in FIG. 2 (d-1)). Further, both the distance between the pair of first pressing plates 230 and the distance between the pair of second pressing plates 240 are similarly reduced, and the main surfaces 120a and 120b of the film exterior member 120 are sandwiched. . Thereby, the height of the liquid level of the liquid ES having electrical conductivity can be adjusted. As a result, as shown in FIG. 2 (d-1), the liquid-impregnated area SY is placed in the center of the sheet laminate 110 (the middle in the left-right direction of FIG. 2 (d-1)). ) So as not to reach the upper surface of the sheet laminate 110. Therefore, it is possible to prevent the liquid soaking area SY having electrical conductivity from enclosing the non-soaking area SN.

  In the above, the manufacturing method of the sheet | seat laminated body accommodation material of this invention was demonstrated.

  Next, the configuration of a modified example 200A of the apparatus for manufacturing the sheet laminate housing material 100 will be described.

FIG. 8 is a perspective view showing a configuration of a modified example 200A of the apparatus for manufacturing a sheet laminate housing material. FIG. 8 is compared with FIG. In FIG. 4, the first drive unit 250 and the second drive unit 260 are provided, whereas in FIG. 8, these are not provided. In this respect, they are different. That is, as described above, when the manufacturing apparatus 200 is used, the first pressing plate 230 is driven by the first driving unit 250, and the second pressing plate 240 is driven by the second driving unit 260. It was. On the other hand, when 200 A of manufacturing apparatuses which are modifications are used, the 1st press board 230 and the 2nd press board 240 can be moved manually.

  As mentioned above, the manufacturing method of the sheet laminated body accommodation material in embodiment of this invention includes a sheet laminated body accommodation process, a sheet laminated body arrangement | positioning process, and a liquid immersion process. In the sheet laminated body accommodation step, a sheet laminated body including at least a sheet (for example, ion permeable membrane 115) that can be infiltrated with liquid is accommodated in a bag-shaped film exterior material. In the sheet laminate arrangement step, the bottom of the bag of the film exterior member 120 in which the sheet laminate 110 is accommodated is vertically downward, and the bag-like opening (liquid supply port 123) of the film exterior member 120 is vertically upward. The sheet stack 110 is arranged so that the stacking direction is the horizontal direction. In the liquid soaking step, the liquid ES having electrical conductivity is supplied in a plurality of times from the opening (liquid supply port 123) of the bag of the film exterior material 120, and each of the plurality of times of supplying the liquid ES. In addition, a pair of main surfaces 120a and 120b facing each other in the film exterior member 120 are sandwiched between a pair of pressing plates (first pressing plate 230 and second pressing plate 240) from the outside, The supplied liquid ES is raised from the bottom side to the opening side of the film exterior member 120 to raise the inside of the sheet laminate 120, and the liquid ES is immersed in the sheet laminate 110. In the first stage of the liquid immersion process, the region sandwiched between the pair of pressing plates (first pressing plate 230) is only part of the pair of main surfaces 120a and 120b of the film exterior material 120.

  Thus, at the first time of the liquid immersion process, after supplying the electrically conductive liquid ES into the film exterior material 120 from the opening (liquid supply port 123), the pair of main surfaces 120a of the film exterior material 120 is provided. , 120b is sandwiched between a pair of pressing plates (first pressing plate 230) from the outside, and the electrically conductive liquid ES supplied into the film exterior material 120 is liquid from the bottom side of the film exterior material 120. The inside of the sheet laminate 110 is raised toward the supply port 123 side, and the liquid ES having electrical conductivity is immersed in the sheet laminate 110. At this time, by sandwiching only a part of the pair of main surfaces 120a and 120b of the film exterior material 120 between the pair of pressing plates (first pressing plate 230), the liquid ES having electrical conductivity is applied to the battery element 110. The penetration direction can be controlled. Thereby, the liquid ES supplied into the film exterior member 120 is raised from the bottom side of the film exterior member 120 toward the liquid supply port 123 side in the sheet laminate 110. As a result, in the sheet laminate 110, an area where the liquid having electrical conductivity is immersed (immersion area SY) is an area where the liquid having electrical conductivity is not immersed (non-immersion area). SN) can be prevented from being enclosed. As a result, the generation of wrinkles in the sheet (for example, the ion permeable film 115) in the sheet laminate 110 can be suppressed. And since the wrinkle of the sheet | seat in the sheet | seat laminated body 110 does not generate | occur | produce, it can also prevent that a bubble generate | occur | produces in the wrinkle part of a sheet | seat. As mentioned above, according to the manufacturing method of the sheet | seat laminated body accommodation material in embodiment of this invention, generation | occurrence | production of the wrinkle of the sheet | seat in a sheet | seat laminated body and the remaining of a bubble can be suppressed.

  Moreover, in the manufacturing method of the sheet | seat laminated body accommodation material in embodiment of this invention, the sheet | seat laminated body 110 compares with the 1st sheet | seat which is a sheet | seat which can be made to immerse a liquid, and a 1st sheet | seat. Thus, sheets that take time to soak liquid or second sheets that cannot be soaked in liquid are alternately laminated. Thus, even if it is a case where the sheet | seat from which a kind differs is laminated | stacked alternately and comprises a sheet | seat laminated body, there exists an effect similar to the said effect.

  In the method for manufacturing a sheet laminate housing material according to the embodiment of the present invention, the first sheet (a sheet into which liquid can be permeated) is the ion permeable membrane 115 and the second sheet (the first sheet). The sheet that takes time to immerse the liquid compared to the sheet 1 or the sheet that cannot impregnate the liquid) is the positive electrode (positive electrode 113) or the negative electrode (negative electrode 114). Thus, even when the sheet laminated body is constituted by the ion permeable film 115 and the positive electrode (positive electrode 113) or the negative electrode (negative electrode 114), the same effect as the above effect can be obtained. In the method for manufacturing a sheet laminate housing material according to the embodiment of the present invention, the pair of pressing plates (first pressing plates 230) is a pair of main members of the film exterior material 120 at the first time of the liquid immersion process. Of the surfaces 120a and 120b, the film exterior material 120 is formed so as to sandwich a region where the width gradually decreases from the bottom toward the center.

  By using a pair of pressing plates (first pressing plate 230) formed in such a shape, only a part of the pair of main surfaces 120a, 120b of the film exterior material 120 is sandwiched from the outside, so that the film exterior material The liquid ES having electrical conductivity supplied in 120 is raised more efficiently in the sheet laminate 10 from the bottom side of the film exterior member 120 toward the liquid supply port 123 side. As a result, in the sheet laminate 110, an area where the liquid having electrical conductivity is immersed (immersion area SY) is an area where the liquid having electrical conductivity is not immersed (non-immersion area). SN) can be efficiently prevented. As a result, the generation of wrinkles in the sheet (for example, the ion permeable membrane 115) in the sheet laminate 110 can be efficiently suppressed. And since the wrinkle of the sheet | seat in the sheet | seat laminated body 110 does not generate | occur | produce, it can also prevent that a bubble generate | occur | produces in the wrinkle part of a sheet | seat. As mentioned above, according to the manufacturing method of the sheet | seat laminated body accommodation material in embodiment of this invention, generation | occurrence | production of the wrinkle of the sheet | seat in a sheet | seat laminated body and the remaining of a bubble can be suppressed.

  In the method for manufacturing a sheet laminate housing material according to the embodiment of the present invention, the pair of pressing plates (the first pressing plate 230 and the second pressing plate 240) is further used in the final round of the liquid immersion process. The film exterior member 120 is formed so as to sandwich the entire region of the pair of main surfaces 120a and 120b.

  Thus, in the last round of the liquid immersion process, a pair of main surfaces 120a and 120b of the film exterior member 120 are used by using a pair of pressing plates (the first pressing plate 230 and the second pressing plate 240). The electrically conductive liquid ES supplied into the film exterior member 120 is spread over the entire sheet laminate 110 across the entire region. As a result, the liquid ES having electrical conductivity can be immersed in the sheet laminate 110 while reducing unevenness.

  In the method for manufacturing a sheet laminate housing material in the embodiment of the present invention, the region sandwiched by the pressing plates from the first time to the last time of the liquid soaking process is a pair of main surfaces 120a and 120b of the film exterior material 120. It spreads from the center to the periphery.

  In the above description, it has been described that the liquid soaking process is composed of two processes, the first time and the last time only. However, the liquid immersion process is not limited to two times, and may be three or more times. At this time, the region sandwiched by the pressing plates is formed so as to spread from the central part of the pair of main surfaces 120a, 120b of the film exterior member 120 toward the peripheral part from the first to the last of the liquid immersion process. . Thereby, the liquid ES having electrical conductivity can be gradually immersed from the central portion of the sheet laminate 110 to the peripheral portion. As a result, the liquid ES having electrical conductivity can be immersed in the sheet laminate 110 while reducing unevenness.

  In the method for manufacturing a sheet laminate housing material according to the embodiment of the present invention, in the liquid soaking step, the distance between the pair of pressing plates is reduced as the final approach is approached. Thereby, the height of the liquid ES liquid surface having final electrical conductivity can be easily adjusted.

  The sheet laminate housing material manufacturing apparatus according to the embodiment of the present invention includes a film exterior material holding part 220, a liquid supply nozzle, and a plurality of pressure plates (for example, a first pressure plate 230 and a second pressure plate). A pressing plate 240) and a plurality of driving units (for example, a first driving unit 250 and a second driving unit 260). The film exterior material holding part 220 retains the bag-shaped film exterior material 120 having the liquid supply port 123 for supplying the liquid ES having electrical conductivity so that the liquid supply port 123 faces upward in the vertical direction. . The liquid supply nozzle 300 can supply the liquid ES from the liquid supply port 123. The press plate divided into a plurality presses a pair of main surfaces 120a and 120b facing each other in the film exterior material 120 held by the film exterior material holding portion 220 from the outside. The plurality of driving units drive a plurality of presser plates. As described above, since the plurality of pressing plates (for example, the first pressing plate 230 and the second pressing plate 240) for pressing the pair of main surfaces 120a and 120b of the film exterior member 120 from the outside are provided, these pressing plates are provided. By properly using these, the penetration of the electrically conductive liquid ES into the sheet laminate 110 can be easily controlled. As a result, in the sheet laminate 110, an area where the liquid having electrical conductivity is immersed (immersion area SY) is an area where the liquid having electrical conductivity is not immersed (non-immersion area). SN) can be efficiently prevented. As a result, the generation of sheet wrinkles in the sheet laminate 110 can be efficiently suppressed. And since the wrinkle of the sheet | seat in the sheet | seat laminated body 110 does not generate | occur | produce, it can also prevent that a bubble generate | occur | produces in the wrinkle part of a sheet | seat.

  The apparatus 200 for manufacturing a sheet laminate housing material according to the embodiment of the present invention drives a pressing plate (for example, the first driving unit 250 and the first driving unit 250 as the liquid ES is supplied from the liquid supply nozzle 300. ) Are moved so that the number of drive units (for example, the first drive unit 250 and the second drive unit 260) increases.

  Thereby, the area | region pinched | interposed with a pressing plate expands as the liquid ES is supplied from the liquid supply nozzle 300. FIG. Therefore, the liquid ES having electrical conductivity can be gradually dipped into the sheet laminate 110. As a result, the liquid ES having electrical conductivity can be immersed in the sheet laminate 110 while reducing unevenness.

  In the sheet laminate housing material 200 according to the embodiment of the present invention, as the liquid ES is supplied from the liquid supply nozzle 300, the plurality of driving units are moved so that the driving amount of the presser plate is increased.

  Thereby, the distance between the pair of pressing plates can be gradually reduced as the liquid ES is supplied from the liquid supply nozzle 300. Thereby, the height of the liquid ES liquid surface having final electrical conductivity can be easily adjusted.

  In the description of the above embodiment, the sheet stack 110 is compared with the first sheet (for example, the ion permeable film 115) which is a sheet into which liquid can be immersed, and the first sheet. And a second sheet (for example, the positive electrode 113 and the negative electrode 114), which is a sheet that takes a long time to soak liquid, or a sheet that cannot be soaked with liquid, is alternately laminated. Explained that it will be. On the other hand, not only this but a sheet | seat laminated body may be comprised by laminating | stacking only by the sheet | seat (for example, ion permeable film 115) into which a liquid can be immersed. Even in this case, as in the description of the above embodiment, the generation of wrinkles of the sheets in the sheet stack and the remaining of the bubbles can be suppressed. The present invention has been described above based on the embodiment. The embodiment is an exemplification, and various modifications, increases / decreases, and combinations may be added to the above-described embodiments without departing from the gist of the present invention. It will be understood by those skilled in the art that modifications to which these changes, increases / decreases, and combinations are also within the scope of the present invention.

DESCRIPTION OF SYMBOLS 100 Sheet laminated body accommodation material 110 Sheet laminated body 111 Positive electrode terminal 112 Negative electrode terminal 113 Positive electrode 114 Negative electrode 115 Ion permeable film 120 Film exterior material 121 Film 122 Film 123 Liquid supply port 200 Sheet laminated body accommodation apparatus 210 Base part 220 film exterior material holding unit 230 first presser plate 240 second presser plate 250 first drive unit 260 second drive unit 300 liquid supply nozzle 500 sheet laminate housing material 510 sheet laminate 511 positive electrode terminal 512 negative electrode terminal 520 Film exterior material 521 Film 522 Film 523 Liquid supply port 600 Liquid supply nozzle 700a Holding plate 700b Holding plate

Claims (3)

A sheet laminate housing step of housing a sheet laminate including a sheet capable of immersing at least a liquid in a bag-shaped film exterior material; and
The bottom of the bag of the film exterior material in which the sheet laminate is accommodated is vertically downward and the bag-like opening of the film exterior material is vertically upward, and the stacking direction of the sheet laminate is perpendicular to the vertical direction. And a sheet laminate arrangement step of arranging so as to be in a vertical horizontal direction,
A first liquid supply step for supplying liquid from the bag-shaped opening of the film exterior material to a position in contact with the bottom surface of the sheet laminate so as not to contact the top surface of the sheet laminate;
After the first liquid supply step, a first sandwiching step of sandwiching only a part of the pair of main surfaces facing each other among the film exterior materials with a pair of pressing plates from the outside;
After said first scissors narrowing process, the bag-like opening of the film exterior material, so as not to contact the upper surface of the sheet laminate, and a second liquid supply step of supplying the liquid,
After the second liquid supplying step, seen including a second entrapment step of sandwiching the entire area of the pair of main surfaces of the film casing material from the outside by a pair of retainer plates,
The pair of pressing plates in the first sandwiching step sandwiches a region of the pair of main surfaces of the film exterior material that gradually decreases in width from the bottom portion to the center portion of the film exterior material. Is composed of
In the first sandwiching step, the liquid supplied into the film exterior member is not moved from the bottom side of the film exterior material toward the opening side so as not to reach the upper surface of the sheet laminate. The sheet laminate is raised to allow the liquid to soak into the sheet laminate, and the soaking in the sheet laminate is a process of spreading upward around a central portion in the width direction of the sheet laminate. A method for manufacturing a sheet laminate housing material.
  The sheet laminate includes a first sheet that is a sheet capable of soaking liquid, and a sheet or liquid that takes time to soak liquid as compared to the first sheet. The manufacturing method of the sheet | seat laminated body accommodation material of Claim 1 with which the 2nd sheet | seat which is a sheet | seat which cannot be held is laminated | stacked alternately. The method for producing a sheet laminate housing material according to claim 2, wherein the first sheet is an ion permeable membrane, and the second sheet is a positive electrode or a negative electrode.

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