JP2013115411A - Laminated energy device and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminated energy device which can be made compact while reducing the cost, and to provide a manufacturing method therefor.SOLUTION: The laminated energy device includes a plurality of single cells C1, C2 each having a laminate of at least two layers laminated on the active material electrodes 10, 12 of positive and negative electrodes while interposing a separator 30 transmitting electrolyte and ions, so that the extraction electrodes 32a, 32b are exposed and the positive and negative electrodes alternate, a partition laminate sheet 40c interposed between the single cells C1, C2 and superimposing them, an exterior laminate sheet 40 for sealing the entirety of the single cells C1, C2 connected, and an electrolyte 44 injected between the exterior laminate sheet 40 and the partition laminate sheet 40c. The laminated energy device is connected electrically via the extraction electrodes 32a, 32b.

Description

  The present invention relates to a laminate type energy device and a method for manufacturing the same, and more particularly to a laminate type energy device and a method for manufacturing the same that can be reduced in size and cost.

  Conventionally, as a laminate type energy device, a laminate type electric double layer capacitor or the like is known. For example, a laminate type energy device includes a laminate in which electrodes and a separator are laminated and impregnated with an electrolyte, a laminate sheet (aluminum laminate package) that seals the laminate inside, and the laminate is electrically connected to the outside. And a tab electrode that is drawn out of the laminate sheet from the laminate in order to be connectable.

  Various techniques relating to the electric double layer capacitor have been proposed (see, for example, Patent Document 1).

JP 2001-338848 A

  The electric double layer capacitor has a low withstand voltage and a low chargeable voltage. For this reason, when a high voltage is required, a plurality of electric double layer capacitors are connected in series.

  Here, when the conventional laminated double-layered electric double layer capacitors are stacked and connected in series by, for example, tab electrodes being welded, a gap is formed between the laminated packages, thereby increasing the overall volume. .

  Moreover, in each electric double layer capacitor that is laminated, a tab electrode is joined to each lead electrode (metal foil). Tab electrodes used for laminated packaged electric double layer capacitors, etc. are composed of Ni plated Cu, Al, Ni, etc., and are relatively expensive among the components, and the number of series of electric double layer capacitors As the number increases, it affects the overall cost.

  An object of the present invention is to provide a laminate type energy device that can be reduced in size and cost and a method for manufacturing the same.

  According to one aspect of the present invention for achieving the above object, the positive and negative electrode lead electrodes are exposed while the positive and negative electrode active material electrodes are interposed with the separator through which the electrolyte and ions pass, and the positive and negative electrode lead electrodes are exposed. A plurality of single cells having a laminate of at least two or more layers laminated so that electrodes and negative electrodes are alternately laminated, and a laminate sheet for partitioning that is interposed between the single cells and overlapping the single cells; An exterior laminate sheet that seals the entire connected single cells, and an electrolyte solution injected between the exterior laminate sheet and the partition laminate sheet, and is electrically connected via the extraction electrode. Connected laminated energy devices are provided.

  According to another aspect of the present invention, the positive electrode and the negative electrode are exposed so that the positive electrode and the negative electrode are exposed while the separator through which the electrolyte and ions pass is interposed in the positive and negative electrode active material electrodes. A step of superimposing a plurality of single cells including a laminate of at least two layers laminated alternately, a step of welding the lead electrodes and making the plurality of single cells connected in parallel or in series; A step of welding a tab electrode to the connected extraction electrode and the extraction electrode on both ends, a step of providing a sealing portion made of a thermoplastic resin at an end of the tab electrode on the single cell side, A step of sandwiching a partitioning laminate sheet in which a cut portion into which the sealing portion is accommodated is formed between the single cells, a step of covering the connected single cells with the laminate sheet for exterior, and an opening in a part A step of fusing the edge of the laminate sheet for exterior packaging, and a step of injecting an electrolyte between the laminate sheet for exterior packaging and the laminate sheet for partitioning through the opening; There is provided a method for manufacturing a laminate type energy device, comprising the step of fusing and sealing the opening.

  According to the present invention, it is possible to provide a laminate type energy device that can be reduced in size and reduced in cost and a manufacturing method thereof.

FIG. 9 is a schematic bird's-eye view structure illustrating a module substrate on which the laminate type energy device shown in FIG. 8 is manufactured, which is manufactured according to the first embodiment. (A) Schematic bird's-eye view structure diagram showing energy device according to first embodiment, (b) Schematic bird's-eye view structure diagram showing an example of a module substrate on which the energy device according to the first embodiment is mounted. The top view which illustrates the laminated body which laminated | stacked the electrode and separator in the lamination type energy device produced by 1st Embodiment. In the first embodiment, (a) a top view illustrating a tab electrode with a sealing portion (before processing) used in the laminate shown in FIG. 3, and (b) with a sealing portion used in the laminate shown in FIG. The top view which illustrates a tab electrode (after processing). FIG. 4A is a top view illustrating an energy device in which the tab electrode with a sealing portion shown in FIG. 4B is joined to the aluminum lead electrode of the stacked body of FIG. 3 in the first embodiment, and FIG. The top view which illustrates the energy device which joined the tab electrode with a sealing part which does not have a hole (joining hole). (A) In 1st Embodiment, the typical cross-section figure along the II line of the laminated body of FIG. 3, (b) The schematic along the II line of the laminated body of 3 pairs of positive and negative electrodes FIG. In 1st Embodiment, the typical cross-section figure along the II-II line of the laminated body of FIG. (A) In the first embodiment, a diagram illustrating a state in which it is completed as one laminate type energy device (when it has a contact hole (joining hole)), (b) one laminate in the first embodiment The figure which illustrates a mode completed as a type | mold energy device (when it does not have a contact hole (joining hole)). In the first embodiment, it is a variation example of the position of the tab electrode extraction hole provided in the laminate type energy device, (a) an example in which the tab electrode extraction hole is provided in the corner on the diagonal line, (b) An example in which a tab electrode lead-out hole is provided close to the corner portion, and (c) an example in which the tab electrode lead-out hole is provided in the opposite side portion. 9 is a variation of the laminate type energy device in which the tab electrode is arranged in accordance with the position of the tab electrode extraction hole shown in FIG. 9, and (a) the tab electrode extraction hole is diagonally arranged. (B) Another example in which tab electrode extraction holes are provided in diagonal corners, (c) An example in which tab electrode extraction holes are provided on opposing sides, (d) Another example in which holes for taking out tab electrodes are provided on opposite sides. It is a laminate type energy device as a comparative example, (a) a diagram illustrating a single unit of a laminate type energy device, (b) a diagram illustrating a single unit of another laminate type energy device, and (c) a laminate type energy device. The figure which shows the state which piles up a single body and is connected in parallel. It is a laminate type energy device as a comparative example, (a) a diagram illustrating a single unit of a laminate type energy device having positive and negative electrodes formed on the left side, and (b) a single unit of a laminate type energy device having positive and negative electrodes formed on the right side. FIG. The figure which shows the state which piles up the single unit of the lamination type energy device as a comparative example, and is connected in series. The figure which is one process of the manufacturing process of the lamination type energy device which concerns on 1st Embodiment, and shows the state which made two single cells face each other via the partitioning laminate sheet. It is a structural example of the laminate sheet for partition, (a) The top view of the laminate sheet for partition which has a notch part, (b) The typical cross-section figure along the VII-VII line of Fig.15 (a), (c FIG. 15 is a schematic sectional view taken along line VIII-VIII in FIG. It is one process of the manufacturing process of the lamination type energy device which concerns on 1st Embodiment, Comprising: (a) The front view which shows the state which piled up two single cells through the partitioning laminate sheet, (b) Two The top view which shows the state which piled up the single cell through the lamination sheet for a partition. The typical cross-section figure which follows the IV-IV line | wire of FIG. 16 of the structure on which the single cell was piled up through the lamination sheet for a partition. The typical cross-section figure which follows the VV line | wire of FIG. 16 of the structure on which the single cell was piled up through the laminate sheet for a partition. The typical cross-section figure which follows the VI-VI line of FIG. 16 of the structure on which the single cell was piled up through the laminate sheet for a partition. It is a figure which shows the state with which the single cell was piled up through the laminate sheet for a partition, Comprising: (a) The front view which shows the state with which the positive electrode and the negative electrode were welded and joined, (b) The typical bird's-eye view structural drawing. FIG. 3 is a configuration diagram in which three single cells are connected in series in the laminated energy device according to the first embodiment. FIG. 3 is a configuration diagram in which four single cells are connected in series in the laminated energy device according to the first embodiment. The typical bird's-eye view structure figure which is one process of the manufacturing process of the lamination type energy device which concerns on 1st Embodiment, and shows the state which covered the whole single cell connected in series by the laminate sheet for exterior | packing. Schematic which is a process of the manufacturing process of the lamination type energy device which concerns on 1st Embodiment, Comprising: The state which melt | fused the edge of the laminate sheet for exterior | packing in the state which formed the opening part in part. It is a step of the manufacturing process of the laminate type energy device according to the first embodiment, and (a) a state in which an electrolyte is injected between the exterior laminate sheet and the partition laminate sheet through the opening. The typical bird's-eye view structure figure to show, (b) The typical bird's-eye view structure figure which shows the state which inject | pours the electrolyte solution 44 from each formed opening part. FIG. 3 is a schematic view showing a state in which the edge on the side where the opening exists is fused in one step of the manufacturing process of the laminated energy device according to the first embodiment. The circuit diagram which shows the structural example of the light emission circuit of LED flash which applied the lamination type energy device which concerns on 1st Embodiment. It is a laminate type energy device according to the second embodiment, (a) a diagram illustrating a single unit of a laminate type energy device, (b) a diagram illustrating a single unit of another laminate type energy device, (c) FIG. The figure which shows the state which piles up the single unit of the lamination type energy device shown to (a) and FIG.28 (b) and connects in parallel, (d) The state which joined the tab electrode to the lamination type energy device connected in parallel The figure to show, (e) The figure which shows the structure which does not provide the hole for tab electrode extraction. The typical bird's-eye view structural view which shows the state which pinched | interposed the lamination sheet for partition between the single cells of the lamination type energy device connected in parallel in the lamination type energy device which concerns on 2nd Embodiment. The front view which illustrates an electric double layer capacitor internal electrode. The front view which illustrates a lithium ion capacitor internal electrode. The front view which illustrates a lithium ion battery internal electrode. Explanatory drawing which shows the state which joins the extraction electrode 32 and a tab electrode by welding. (A) Typical sectional drawing which shows the structure in the case of providing a notch part in the partitioning laminate sheet, (b) Typical sectional view which shows the structure in the case of not providing a notching part in the partitioning laminate sheet. The typical sectional view showing the state where the extraction electrode was welded and joined outside the sealing part.

  Next, embodiments will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

  Further, the embodiments described below exemplify apparatuses and methods for embodying the technical idea of the present invention, and the embodiments of the present invention include the material, shape, structure, The layout is not specified as follows. Various modifications can be made to the embodiment of the present invention within the scope of the claims.

[Embodiment]
[First Embodiment]
(Basic structure of laminated energy device)
With reference to FIGS. 1-10, the basic structure applied to the laminate type energy device which concerns on 1st Embodiment is demonstrated.

  For example, as shown in FIGS. 6 and 7, the laminate type energy device 18 has at least two layers laminated so that the positive and negative lead electrodes 32a and 32b are exposed and the positive and negative electrodes are alternately arranged. The laminate 80 includes the laminate 80, and the laminate 80 is compression-sealed by stacking a laminate sheet from the front surface and the rear surface of the laminate 80.

  As illustrated in FIG. 1, the laminate type energy device 18 includes contact holes (joining holes) 20 a and 20 b for spot joining the laminate type energy device 18 to the module substrate 100. For example, the laminated energy device 18 is assumed to be used as a basic module and mounted on a printed board. Generally, the module substrate 100 includes, for example, IC chips 160 and 170 in addition to the laminated energy device 18. A large number of transformers 120 and other device parts 140 are mounted. Therefore, by providing the contact holes 20a and 20b in the laminate type energy device 18, it contributes to mounting the laminate type energy device 18 in a limited space. Further, since spot bonding is realized in the contact holes (bonding holes) 20a and 20b when the module is mounted, the thermal load on the electrolyte impregnated in the laminate 80 inside the laminate type energy device 18 is suppressed, and the coil The contribution of the component is also reduced, and the high frequency characteristics are improved.

  Specifically, as illustrated in FIGS. 3 to 7, the tab electrodes 34 (34 a, 34 b) made of Al, Ni, Ni plated Cu, etc. used for the lead electrodes 32 a, 32 b made of aluminum are used. A portion of both surfaces of the sealing portion (sealant) 36 is scraped until the aluminum material or the like of the tab electrode 34 (34a, 34b) is exposed to form tab electrode extraction holes 20a, 20b. A hole is made in advance at the same position as the holes 20a and 20b. When sealing the laminated body 80 of internal electrodes, the laminate sheet is compressed and sealed from the front and rear surfaces of the laminated body 80 by aligning the positions of the tab electrode extraction holes 20a and 20b and the holes. The tab electrode extraction holes 20a and 20b and the holes do not need to be circular holes, and holes having a desired shape may be employed.

  The tab electrode extraction holes 20a and 20b shown in FIG. 1 and the like are not essential, and the configuration shown in FIGS. 3 to 7 may be configured such that the tab electrode extraction holes 20a and 20b are not provided. That is, as shown in FIG. 5A, there are a case where the tab electrode extraction holes 20a and 20b are provided, and a case where the tab electrode extraction hole is not provided as shown in FIG. 5B. When the tab electrode take-out hole is not provided, it is incorporated into various devices via the tab electrode 34 (34a, 34b) instead of being incorporated via the tab electrode take-out holes 20a, 20b.

  As shown in FIGS. 6 and 7, the internal electrode structure (for example, the storage element) in the laminate type energy device 18 is a separator 30 through which an electrolytic solution and ions pass through at least two active material electrodes 10 and 12. The multilayer structure 80 is configured such that the lead electrodes 32 (32a, 32b) are exposed and the positive electrodes 10 and the negative electrodes 12 are alternately stacked.

  As shown in FIGS. 6A, 7 and 33, the upper end portion 100b of the extraction electrode 32 (32a, 32b) is welded to the end portion 100a of the tab electrodes 34a, 34b. In addition, the code | symbol 37a shows a welding part.

  FIG. 6B shows a configuration example in the case of a pair of positive and negative electrodes. Note that the outermost active material electrodes 10 and 12 are not paired with the separator 30 in between, and therefore do not affect the capacity. Although the outermost separator 30 can be omitted, it is necessary when the separator itself is covered in a bag shape. Although not shown in FIG. 6 (b), common electrode wiring is applied to each of the active material electrodes 10, 12 and the extraction electrodes 32a, 32b in the pair of positive and negative electrodes. .

 As illustrated in FIGS. 6 and 7, the separator 30 is larger than the active material electrodes 10 and 12 (having a large area) so as to cover the entire active material electrodes 10 and 12.

  The separator 30 does not depend on the type of energy device in principle, but heat resistance is required particularly when reflow treatment is required. When heat resistance is not required, polypropylene or the like can be used, and when heat resistance is required, a cellulosic material can be used.

  Further, the exterior laminate sheet 40 is compressed again from the front and rear surfaces, and the aluminum cut end surfaces of the tab electrodes 34a and 34b are insulated. At this time, the distal ends of the cut tab electrodes 34a and 34b are covered by the compressed and expanded sealing portions (sealants) 36a and 36b (the materials of the sealing portions 36a and 36b are melted and spread by being thermally compressed. By the sealing portions 52a and 52b, the cut end surfaces of the tab electrodes 34a and 34b are covered and protected and insulated (see FIG. 8A).

  In the case where the tab electrode extraction holes 20a and 20b are not provided, the state shown in FIG. 8B is obtained.

  9 illustrates a variation of the positioning of the tab electrode extraction holes 20 (20a, 20b) provided in the laminate type energy device 18, and FIG. 10 illustrates the tab electrode extraction holes 20 (FIG. 9). FIG. 10A and FIG. 10B illustrate a variation of the laminate type energy device 18 in which the tab electrodes 34a and 34b are arranged in accordance with the positions of 20a and 20b). FIG. 10A and FIG. Correspondingly, FIGS. 10 (c) and (d) correspond to FIG. 9 (c).

(Comparative example)
With reference to FIGS. 11-13, the structural example of the lamination type energy device which concerns on a comparative example is demonstrated.

  First, with reference to FIG. 11, the comparative example in the case of connecting the laminate type energy devices in parallel will be described.

  11A and 11B illustrate a single unit of a laminate type energy device according to a comparative example.

  The single unit of the laminate type energy device has a configuration in which an energy device having a configuration as shown in FIG. 5 is sealed with an exterior laminate sheet 40.

  When two laminate type energy devices are connected in parallel, as shown in FIG. 11C, the laminate type energy devices are overlapped so that the positive electrode side tab electrodes 34a and the negative electrode side tab electrodes 34b are connected to each other. The tab electrode take-out hole 20 (20a, 20b) is welded and joined.

  The tab electrode extraction holes 20a and 20b are not essential, and the tab electrode extraction holes 20a and 20b may be omitted. In that case, instead of welding via the tab electrode extraction holes 20a and 20b, the tab electrodes 34 (34a and 34b) are welded and joined.

  When two laminated energy devices are connected in parallel, since the individual laminated energy devices are laminated in a single package, a gap is formed between the laminated packages, and the overall volume increases. End up.

  Each laminate-type energy device that is laminated is provided with tab electrodes 34a and 34b. The tab electrode is made of Cu plated with Ni, Al, Ni, or the like. When the number of laminated energy devices is increased, the overall cost is affected.

  Next, with reference to FIG. 12 and FIG. 13, the comparative example in the case of connecting the laminate type energy devices in series will be described.

  FIG. 12A illustrates a single unit of a laminated energy device in which the positive electrode tab electrode 34a is formed on the left side of the negative electrode tab electrode 34b, and FIG. 12B illustrates the negative electrode tab electrode 34b on the positive electrode side. A single unit of a laminate type energy device formed on the right side of the tab electrode 34a is illustrated.

  The single unit of the laminate type energy device has a configuration in which an energy device having a configuration as shown in FIG.

  When two laminate type energy devices are connected in series, as shown in FIG. 13, the laminate type energy devices are overlapped, and the positive electrode side tab electrode 34a and the negative electrode side tab electrode 34b facing each other at substantially the center. Are welded and joined at the position of the tab electrode extraction hole 20 (20a, 20b).

  When the tab electrode extraction hole 20 is not provided, the tab electrodes 34 a and 34 b are welded outside the exterior laminate sheet 40.

  When two laminated energy devices are connected in series in this way, since each laminated energy device is individually laminated, a gap is formed between the laminated packages. Volume increases.

  In addition, each laminate-type energy device that is laminated and packaged includes the tab electrodes 34a and 34b, which is expensive.

  As shown in FIGS. 14 to 26, the laminate type energy device according to the first embodiment has positive and negative electrode active material electrodes 10 and 12, while interposing a separator 30 through which electrolyte and ions pass. A plurality of single cells C1, C2 having a laminate 80 of at least two layers laminated so that the negative lead electrodes 32a and 32b are exposed and the positive electrodes and the negative electrodes are alternately arranged, and the single cell C1 , C2 are overlapped with each other, and a laminate sheet 40c for partitioning interposed between the single cells C1 and C2, an exterior laminate sheet 40 for sealing the entire connected single cells C1 and C2, and an exterior laminate sheet 40 and an electrolyte solution 44 injected between the partitioning laminate sheet 40c and electrically connected via the extraction electrodes 32a and 32b.

  The lead electrodes 32a and 32b of the single cells C1 and C2 are connected to each other in series, and the plurality of single cells C1 and C2 are connected in series.

  The connection is made by welding the exposed portions of the extraction electrodes 32a and 32b.

  When the two single cells C1 and C2 are overlapped, one positive electrode and the other negative electrode are arranged to face each other.

  Tab electrodes and tab electrodes 34a and 34b are joined to the connected extraction electrodes 32a and 32b and the extraction electrodes 32a and 32b on both ends.

  The number of tab electrodes is the total number of unit cells connected in series plus one.

  The partitioning laminate sheet 40 c has a configuration in which a metal foil 42 is sandwiched between two thermoplastic resin films 43.

  A sealing portion 36b and sealing portions 36a and 36b made of a thermoplastic resin are provided at the end portions of the tab electrode 34c and the tab electrodes 34a and 34b on the single cell C1 and C2 side, and an edge portion of the partition laminate sheet 40c. Is formed with a cut portion 40d in which the sealing portions 36a and 36b are accommodated.

  The cut portion 40d is sealed so that the metal foil 42 is not exposed from the end portion by melting the thermoplastic resin film 43.

  The number of partitioning laminate sheets 40c is the total number obtained by subtracting 1 from the number of connected single cells C1 and C2.

  The extraction electrodes 32a and 32b and the tab electrodes 34a and 34b are joined in the sealing portions 36a and 36b, and when the exterior laminate sheet 40 is compressed and sealed, the sealing portions 52a and 52b are compressed and spread at the same time. The ends of the tab electrodes 34a and 34b are covered and insulated.

  The exterior laminate sheet 40 has a configuration in which a metal foil is sandwiched between a thermoplastic resin film and a high melting point resin film, and the single cells C1 connected so that the film side of the high melting point resin is on the outside. , C2 is covered.

(Production method)
With reference to FIGS. 14 to 26, a method for manufacturing a laminated energy device according to the first embodiment will be described.

  As shown in FIGS. 14 to 26, the manufacturing method of the laminate type energy device according to the first embodiment interposes a separator 30 through which an electrolytic solution and ions pass between active material electrodes 10 and 12 of positive and negative electrodes. On the other hand, a plurality of single cells C1 and C2 each including at least two stacked bodies 80 that are stacked so that the positive and negative lead electrodes 32a and 32b are exposed and the positive electrodes and the negative electrodes are alternately stacked. And the step of welding the lead electrodes 32a and 32b to connect the plurality of single cells C1 and C2 in series, and the tab electrodes on the connected lead electrodes 32a and 32b and the lead electrodes 32a and 32b on both ends. 34c and the tab electrodes 34a and 34b are welded, and the end portions of the tab electrode 34c and the tab electrodes 34a and 34b on the single cell C1 and C2 side are thermoplastic. A step of providing sealing portions 36a and 36b made of fat, and a step of sandwiching a partition laminate sheet 40c formed with a cut portion 40d in which the sealing portions 36a and 36b are accommodated between the single cells C1 and C2. The step of covering the connected single cells C1, C2 with the exterior laminate sheet 40, the step of fusing the edge of the exterior laminate sheet 40 with the opening 40e formed in part, and the opening 40e And the step of injecting the electrolyte solution 44 between the exterior laminate sheet 40 and the partition laminate sheet 40c, and the step of fusing and sealing the opening 40e.

  Here, the step of fusing and sealing the opening 40e may be performed in a vacuum.

(A) First, two energy devices (hereinafter referred to as single cells) C1 and C2 having a configuration as shown in FIG. 5 are prepared. At this time, one single cell C1 has a positive-side tab electrode 34a formed on the left side of the negative-side tab electrode 34b, and the other single-cell C2 has a negative-side tab electrode 34b formed on the positive-side tab electrode. It is formed on the right side of 34a.

(B) Next, as shown in FIG. 14, the single cells C1 and C2 are opposed to each other through the partitioning laminate sheet 40c. At this time, the tab electrode 34b on the negative side of the single cell C1 and the tab electrode 34a on the positive side of the single cell C2 are opposed to each other via a notch 40d formed in a partitioning laminate sheet 40c described later. Aligned.

  Here, FIG. 15 shows a configuration example of the partitioning laminate sheet 40c.

  As shown in FIG. 15B, the partition laminate sheet 40c has a configuration in which a metal foil 42 such as an aluminum foil or a copper foil is sandwiched between two films 43 of thermoplastic resin (polypropylene or the like). .

  Moreover, as shown to Fig.15 (a), the notch 40d is formed in the edge part of the upper side of the lamination sheet 40c for a partition according to the position where the tab electrode of the single cells C1 and C2 opposes.

  The cut portion 40d is formed by cutting the end portion of the partitioning laminate sheet 40c with a dedicated cutter or the like. However, in the state where it is cut, the metal foil 42 is exposed from the cut surface and may be short-circuited with the tab electrodes 34a, 34b on the single cell C1, C2 side. The metal foil 42 on the cut surface is covered with a thermoplastic resin to be insulated (see FIG. 15C).

(C) Next, as shown in FIG. 16 (a), the two single cells C1 and C2 are overlapped via a partitioning laminate sheet 40c, and the negative electrode 34b of the single cell C1 and the positive electrode 34a of the single cell C2 Are welded and joined at the position of the tab electrode extraction hole 20 (20a, 20b).

  In addition, it can also be set as the structure which does not provide the tab electrode extraction hole 20 (20a, 20b).

  In this case, the cross section taken along the line IV-IV in FIG. 16A of the configuration in which the single cells C1 and C2 are overlapped with each other through the partitioning laminate sheet has a structure as shown in FIG. The cross section along the VV line of FIG. 16 has a structure as shown in FIG. 18, and the cross section along the VI-VI line of FIG. 16 has a structure as shown in FIG.

  Further, as shown in FIGS. 16B and 34B, it is possible to adopt a configuration in which a notch portion is not provided at a position where the tab electrodes face each other. In this case, the sealing portions 36a and 36b are heat-sealed, and the tab electrodes 34a and 34b are welded and joined outside the sealing portions 36a and 36b.

  That is, as shown in FIG. 34 (a), when the cut-out portion is provided in the partitioning laminate sheet 40c, the welding portions 37a and 37b of the tab electrodes 34a and 34b and the lead electrodes 32a and 32b are welded together. Further, the sealing portions 36a and 36b are heat-sealed.

  On the other hand, as shown in FIG. 34 (b), when the partitioning laminate sheet 40c is not provided with a cut portion, the sealing portion 36a, the partitioning laminate sheet 40c, and 36b are thermally fused at positions facing each other. To wear. The tab electrodes 34a and 34b are joined by welding at any position above the sealing portions 36a and 36b.

  Through the above steps, the single cells C1 and C2 are overlapped via the partitioning laminate sheet, and the negative electrode side tab electrode 34b of the single cell C1 and the positive electrode side tab electrode 34a of the single cell C2 are joined by welding. It becomes a state. As a welding method of the tab electrodes 34a and 34b, for example, ultrasonic welding, resistance welding, or the like is applied.

  Moreover, about the tab electrode 34c joined by welding, in FIG. 16, although shown about the case where both the tab electrode 34b of the single cell C1 side and the tab electrode 34a of the single cell C2 were provided in the opposing position, Not limited to this, one of the tab electrode 34b on the single cell C1 side and the tab electrode 34a on the single cell C2 can be omitted. That is, the tab electrode 34c shown in FIG. 20 can be configured by either the tab electrode 34b on the single cell C1 side or the tab electrode 34a of the single cell C2.

  Here, in the laminate type energy device according to the first embodiment, the number of tab electrodes is the total number of unit cells connected in series plus one. That is, in the example shown in FIG. 20, since the number of single cells connected in series is “2”, the number of tab electrodes is “2 + 1 = 3”. Similarly, for example, when the number of single cells connected in series is “3”, the number of tab electrodes is “4” (see FIG. 21), and when the number of single cells is “4”, the number of tab electrodes. Becomes “5” (see FIG. 22).

  Note that the tab electrode extraction holes 20a and 20b shown in FIGS. 20A and 20B are not essential, and the tab electrode extraction holes 20a and 20b may be omitted. In this case, as shown in FIG. 35, the extraction electrodes 32a and 32b are welded outside the sealing portion 36c. In FIG. 20A, reference numerals 37a, 37b, and 37c denote welds.

  On the other hand, in the comparative example (see FIG. 13), the number of tab electrodes is twice the number of single cells connected in series. That is, when the number of single cells connected in series is “2”, the number of tab electrodes is “4”, and when the number of single cells is “3”, the number of tab electrodes is “6”. The number of tab electrodes is “8” when the number of is “4”.

  As described above, according to the laminated energy device according to the first embodiment, the number of tab electrodes used can be reduced as compared with the comparative example, and the cost can be reduced.

  In the laminated energy device according to the first embodiment, a voltage corresponding to the number of series can be taken out. For example, when the number of single cells connected in series as shown in FIG. 20 is 2, between 34a and 34c, for example, about 2.5V, and between 34a and 34b, for example, about 5V. A voltage can be obtained. As shown in FIG. 21, when the number of single cells connected in series is 3, for example, a voltage of about 2.5 V, for example, about 5 V, for example, about 7.5 V can be obtained in order from the left side. it can. Also, as shown in FIG. 22, when the number of single cells connected in series is 4, for example, about 2.5 V, for example, about 5 V, for example, about 7.5 V, for example, about 10 V in order from the left side. A voltage can be obtained.

  The number of partition laminate sheets 40c is the total number obtained by subtracting 1 from the number of connected single cells. That is, when the number of connected single cells is 2, the number of partition laminate sheets 40c is 1 (see FIG. 20), and when the number of single cells is 3, the number of partition laminate sheets 40c is 2. When the number of sheets (see FIG. 21) and the number of single cells is 4, the number of partition laminate sheets 40c is three (see FIG. 22).

(D) Next, as shown in FIG. 23, the single cells C1 and C2 are overlapped via the partitioning laminate sheet 40c, and the tab electrode 34b on the negative side of the single cell C1 and the tab on the positive side of the single cell C2 are stacked. The electrode 34a is covered with the exterior laminate sheet 40 in a state where the electrode 34a is joined by welding.

  The exterior laminate sheet 40 has a configuration in which a metal foil (aluminum foil) is sandwiched between a film of a thermoplastic resin (polypropylene, etc.) and a film of a high melting point resin (nylon, PET, etc.).

  The exterior laminate sheet 40 covers the entire unit cell connected so that the tab electrodes 34a, 34c, and 34b are exposed, with the film side of the high melting point resin facing outside.

(E) Next, as shown in FIG. 24, with the opening 40e formed in part, the edge of the exterior laminate sheet 40 is heated to, for example, about 160 ° C. and fused. In the example shown in FIG. 24, the right edge is the opening 40e and the other edges are fused.

  At this time, the sealing portion (sealant) 36 is also melted and spreads, and the tab electrode 34c is sealed and insulated.

  The tab electrodes 34a and 34b are also sealed and insulated when the edges of the partition laminate sheet 40c and the exterior laminate sheet 40 are melted.

(F) Next, as shown in FIG. 25A, an electrolyte solution 44 is injected between the exterior laminate sheet 40 and the partition laminate sheet 40c as shown by an arrow P through the opening 40e. The single cell is immersed in the electrolytic solution. As shown in FIG. 25 (b), when two cells are arranged in series, two openings 40e are formed by the partitioning laminate sheet 40c, so that the electrolyte solution 44 is injected from each opening 40e. .

(G) Next, as shown in FIG. 26, the edge on the side where the opening 40e exists is heated and fused to, for example, about 160 ° C. to complete the laminate type energy device.

  Note that the step of fusing and sealing the opening 40e may be performed in a vacuum. In this case, after sealing, the pressure inside the cell is improved by being pushed to atmospheric pressure.

  The laminated energy device according to the first embodiment manufactured as described above can be reduced in size by reducing the volume, reducing the number of tab electrodes used, and reducing the cost.

(Application examples)
FIG. 27 shows a configuration example of a light emitting circuit of an LED flash to which the laminated energy device according to the first embodiment is applied.

  In this light emitting circuit, as the capacitors C11, C12, and C13, a laminate type energy device in which three single cells as shown in FIG. 21 are connected in series is applied. For example, V3 is about 2.5V, and V2 is about 5V. , For example, a voltage of about 7.5 V is obtained.

  Further, a charging battery is connected to the switching transistors (MOS transistors) Q1, Q2, and Q3 via the charger IC 200.

  Also, a laminated energy device in which single cells of capacitors C11, C12, and C13 are connected in series, a light emitting diode (LED), and a resistor Rs are connected via a switch S.

  When the switching transistor Q3 is on, the capacitor C13 is charged by the charger IC200.

  When switching transistor Q2 is on, capacitors C13 and C12 are charged by charger IC 200.

  When the switching transistor Q1 is on, the capacitors C11, C12, and C13 are charged by the charger IC 200.

  When the switching transistors Q1, Q2, and Q3 are turned off and the switch S is turned on, the capacitors C11, C12, and C13 are discharged, and the light emitting diode (LED) is driven.

  As described above, by utilizing the characteristics of the laminated energy device according to the first embodiment that can be reduced in size and cost, the light emitting device of the LED flash can be reduced in size and cost.

[Second Embodiment]
As shown in FIG. 28 and FIG. 29, the laminate type energy device according to the second embodiment has positive and negative electrode active electrodes 10 and 12 with a separator 30 through which electrolyte and ions pass. A plurality of single cells C3 and C4 having a laminate of at least two layers in which positive electrodes and negative electrodes are alternately stacked so that the lead electrodes 32a and 32b are exposed, and single cells C3 and C4 A laminate sheet 40c for partitioning between the single cells C3 and C4, an exterior laminate sheet 40 for sealing the whole connected single cells C3 and C4, and an exterior laminate sheet 40 Electrolytic solution 44 injected between partitioning laminate sheet 40c and electrically connected via extraction electrodes 32a and 32b.

  The lead electrodes 32a and 32b of the single cells C3 and C4 are connected to each other in a positive electrode and a negative electrode, and the plurality of single cells C3 and C4 are connected in parallel.

  The connection is made by welding the exposed portions of the extraction electrodes 32a and 32b.

  Tab electrodes 34a and 34b are joined to the connected extraction electrodes 32a and 32b.

  The partitioning laminate sheet 40 c has a configuration in which a metal foil 42 is sandwiched between two thermoplastic resin films 43.

  Sealing portions 36a and 36b made of thermoplastic resin are provided at the end portions of the tab electrodes 34a and 34b on the unit cell C3 and C4 side, and sealing portions 36a and 36b are provided at the edges of the partitioning laminate sheet 40c. A notch 40d is formed in which is accommodated.

  The cut portion 40d is sealed so that the metal foil 42 is not exposed from the end portion by melting the thermoplastic resin film 43.

  The number of partitioning laminate sheets 40c is the total number obtained by subtracting 1 from the number of connected single cells C3 and C4.

  The extraction electrodes 32a and 32b and the tab electrodes 34a and 34b are joined in the sealing portions 36a and 36b, and when the exterior laminate sheet 40 is compressed and sealed, the sealing portions 52a and 52b are compressed and spread at the same time. The ends of the tab electrodes 34a and 34b are covered and insulated.

  The exterior laminate sheet 40 has a configuration in which a metal foil is sandwiched between a thermoplastic resin film and a high melting point resin film, and the single cells C3 connected so that the film side of the high melting point resin is on the outside. , C4 is covered.

  With reference to FIG. 28 and FIG. 29, the manufacturing method of the lamination type energy device which concerns on 2nd Embodiment is demonstrated.

  In addition, about the structure same as the lamination type energy device which concerns on 1st Embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  Here, the difference between the laminate-type energy device according to the first embodiment and the laminate-type energy device according to the second embodiment is that the former has single cells connected in series, whereas the latter has single cells. It is a point to connect in parallel.

  As shown in FIGS. 28 to 29, the manufacturing method of the laminate type energy device according to the second embodiment includes a separator 30 through which an electrolyte and ions pass through the active material electrodes 10, 12, and 13 of the positive and negative electrodes. A plurality of single cells C3 and C4 having a laminate of at least two layers laminated so that the positive and negative lead electrodes 32a and 32b are exposed and the positive electrode and the negative electrode are alternated while being interposed. The step of superimposing, the step of welding the lead electrodes 32a and 32b, and connecting the plurality of single cells C3 and C4 in parallel, and the connected lead electrodes 32a and 32b and the lead electrodes 32a and 32b on both ends are tabbed. Steps for welding the electrodes 34a and 34b, and sealing portions 36a and 36b made of a thermoplastic resin are provided at the end portions of the tab electrodes 34a and 34b on the unit cell C3 and C4 side. The step of sandwiching the partition laminate sheet 40c formed with the cut portions 40d in which the sealing portions 36a and 36b are accommodated between the single cells C3 and C4 and the exterior laminate sheet 40 are connected. A process of covering the cells C3 and C4, a process of fusing the edge of the exterior laminate sheet 40 with a part of the opening 40e formed therein, and a partition from the exterior laminate sheet 40 via the opening 40e A step of injecting the electrolyte solution 44 between the laminate sheet 40c and a step of fusing and sealing the opening 40e.

  Here, the step of fusing and sealing the opening 40e may be performed in a vacuum.

(A) First, as shown in FIGS. 28A and 28B, two energy devices (hereinafter referred to as a single cell) C3 having the structure shown in FIG. 3 described in the description of the first embodiment. , C4 is prepared.

(B) Next, as shown in FIG. 28C, the single cells C3 and C4 are overlaid so that the respective extraction electrodes 32a and 32b face each other.

(C) Next, the extraction electrodes 32a and 32b are welded and joined. As the welding method, for example, ultrasonic welding or resistance welding is applied.

(D) Next, as shown in FIG. 28D, the tab electrodes 34a and 34b are welded and joined to the joined extraction electrodes 32a and 32b.

  As a result, the number of tab electrodes used can be reduced. In the laminate type energy device according to the second embodiment, since it is sufficient to provide one tab electrode for each of the joined extraction electrodes, it is possible to reduce the cost of the tab electrodes.

(E) Next, the device in the state of FIG. The procedure is the same as the manufacturing method in the laminate type energy device according to the first embodiment.

  That is, first, a partition laminate sheet as shown in FIG. 15 is prepared. At this time, in the partitioning laminate sheet, cut portions are provided at positions corresponding to the sealing portions (sealants) 36a and 36b of the energy device shown in FIG.

  In addition, the point which heat-melts the thermoplastic resin of an edge part about each notch part, and insulates a cut surface beforehand is the same as that of the manufacturing method of the laminate type energy device which concerns on 1st Embodiment.

(F) Next, as shown in FIG. 29, the partitioning laminate sheet 40c is sandwiched between the single cells C3 and C4. At this time, alignment is performed so that the cut portions 40d of the partitioning laminate sheet 40c arrive at the sealing portions (sealants) 36a and 36b of the tab electrodes 34a and 34b.

(G) Next, with the tab electrodes 34a and 34b exposed, the whole is covered with an exterior laminate sheet (aluminum laminate) (see FIG. 23).

(H) Next, with the opening 40e formed, the edges of the exterior laminate sheet 40 and the partition laminate sheet 40c are fused, and after the electrolyte solution 44 is injected, the opening 40e is fused. By sealing, a laminated energy device is completed.

  The laminated energy device manufactured in this way can be reduced in size in addition to reducing the number of tab electrodes to reduce the cost.

  Note that the tab electrode extraction holes 20a and 20b in FIG. 28D are not essential, and as shown in FIG. 28E, the tab electrode extraction holes may not be provided.

  In FIG. 29, reference numerals 37ca and 37cb denote welds. Specifically, for example, as shown in FIG. 35, the ends of the extraction electrodes 32a and 32b and the end of the tab electrode 34c are welded. In FIG. 35, the code | symbol 37c shows a welding part.

  In the laminate type energy device according to the second embodiment, since the single cell is joined and then packaged with one exterior laminate sheet, the volume can be reduced and the device can be miniaturized. .

  In addition, when the process of fusing and sealing the opening is performed in a vacuum, the pressure inside the cell is improved after sealing by being pressed to atmospheric pressure.

  Further, the number of single cells connected in parallel is not limited to two, and the present invention can be applied to a case where three or more single cells are connected in parallel.

(Electric double layer capacitor)
For example, in the electric double layer capacitor, the configuration and manufacturing method according to the first embodiment or the second embodiment are applied to reduce the number of tab electrodes used, thereby reducing the cost and downsizing the capacitor. Can be achieved.

  FIG. 30 illustrates the basic structure of the internal electrode of the electric double layer capacitor. In the electric double layer capacitor internal electrode, the separator 30 through which the electrolytic solution and ions pass is interposed between the active material electrodes 10 and 12 of at least one layer, and the extraction electrodes 32a and 32b are exposed from the active material electrodes 10 and 12. The lead electrodes 32a and 32b are connected to a power supply voltage. The lead electrodes 32a and 32b are made of, for example, aluminum foil, and the active material electrodes 10 and 12 are made of, for example, activated carbon. The separator 30 is larger than the active material electrodes 10 and 12 (having a large area) so as to cover the entire active material electrodes 10 and 12. The separator 30 does not depend on the type of energy device in principle, but heat resistance is required particularly when reflow treatment is required. When heat resistance is not required, polypropylene or the like can be used, and when heat resistance is required, a cellulosic material can be used. The internal electrode of the electric double layer capacitor is impregnated with an electrolytic solution, and the electrolytic solution and ions move through the separator 30 during charging and discharging.

(Lithium ion capacitor)
In addition, for example, in a lithium ion capacitor, the configuration and the manufacturing method according to the first embodiment or the second embodiment of the present invention are applied to reduce the number of tab electrodes used, thereby reducing the cost. The capacitor can be reduced in size.

  FIG. 31 illustrates the basic structure of the lithium ion capacitor internal electrode. The internal electrode of the lithium ion capacitor is configured such that the separator 30 through which the electrolyte and ions pass is interposed between the active material electrodes 11 and 12 of at least one layer, and the extraction electrodes 33a and 32b are exposed from the active material electrodes 10 and 12. The extraction electrodes 33a and 32b are connected to the power supply voltage. The active material electrode 12 on the positive electrode side is made of, for example, activated carbon, and the active material electrode 11 on the negative electrode side is made of, for example, Li-doped carbon. The lead electrode 32b on the positive electrode side is made of, for example, aluminum foil, and the lead electrode 33a on the negative electrode side is made of, for example, copper foil. The separator 30 is larger than the active material electrodes 11 and 12 (having a large area) so as to cover the entire active material electrodes 11 and 12. The lithium ion capacitor internal electrode is impregnated with an electrolytic solution, and the electrolytic solution and ions move through the separator 30 during charging and discharging.

(Lithium ion battery)
In addition, for example, in a lithium ion battery, the configuration and the manufacturing method according to the first embodiment or the second embodiment of the present invention are applied to reduce the number of tab electrodes used, thereby reducing the cost. The battery can be reduced in size.

FIG. 32 illustrates the basic structure of the lithium ion battery internal electrode. The internal electrode of the lithium ion battery is configured such that the separator 30 through which the electrolytic solution and ions pass is interposed between the active material electrodes 11 and 13 of at least one layer, and the extraction electrodes 33a and 32b are exposed from the active material electrodes 11 and 13. The extraction electrodes 33a and 32b are connected to the power supply voltage. The active material electrode 13 on the positive electrode side is made of, for example, LiCoO _2, and the active material electrode 11 on the negative electrode side is made of, for example, Li-doped carbon. The lead electrode 32b on the positive electrode side is made of, for example, aluminum foil, and the lead electrode 33a on the negative electrode side is made of, for example, copper foil. The separator 30 is larger than the active material electrodes 11 and 13 (having a large area) so as to cover the entire active material electrodes 11 and 13. The lithium ion battery internal electrode is impregnated with an electrolytic solution, and the electrolytic solution and ions move through the separator 30 during charging and discharging.

  As described above, according to the present invention, it is possible to provide a laminate type energy device and a method for manufacturing the same, which can be reduced in size and reduced in the number of tab electrodes used and reduced in cost.

[Other embodiments]
As described above, the embodiments have been described. However, it should be understood that the descriptions and drawings constituting a part of this disclosure are illustrative and do not limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  As described above, the present invention includes various embodiments not described herein.

  The laminated energy device of the present invention is applied as an LED-Flash module, a communication (high output) module, a solar cell module, a power supply module, a backup power supply for toys, etc., an energy harvesting storage element, a sensor network storage element, etc. Is possible. The laminated energy device can be applied to an electric double layer capacitor, a lithium ion capacitor, a lithium ion battery, and the like.

  In addition, as an electric double layer capacitor internal electrode, LED-Flash, motor drive power supply (for example, for toys), electric vehicle storage element (for example, for regeneration and starter), energy from solar cells and vibration power generation The present invention can be applied to power storage elements, power storage elements for high-power communication, environment-resistant power storage elements (for example, power storage elements for roadsides and bicycle lights), and the like. The lithium ion capacitor internal electrode can be applied to an energy storage element from a solar cell or wind power generation, a power source for driving a motor, or the like. As an internal electrode of a lithium ion battery capacitor, it can be applied to a battery for a portable device, a storage element for an electric vehicle (during steady operation), a large-scale storage element (for general household use), and the like.

DESCRIPTION OF SYMBOLS 10, 12, 13 ... Active material electrode 18 ... Laminate type energy device 20a, 20b ... Contact hole 24a, 24b ... Electrode pad 25a, 25b ... Solder part 30 ... Separator 32a, 32b ... Extraction electrode 34 (34a, 34b) ... Tab electrode 36a, 36b, 52a, 52b ... Sealing part (sealant)
37a, 37b, 37c, 37ca, 37cb ... welded portion 40 ... exterior laminate sheet
40c ... Laminate sheet for partitioning 40d ... Cut portion 40e ... Opening 42 ... Metal foil 43 ... Film of thermoplastic resin 52a, 52b ... Sealing portion 80 ... Laminate 100 ... Module substrate 120 ... Transformer 140 ... Other device parts 160 , 170 ... IC chip 200 ... Charger IC
C1, C2, C3 ... single cell Q1, Q2, Q3 ... switching transistor Rs ... resistor S ... switch

Claims (15)

At least two layers laminated so that the positive and negative electrode lead electrodes are exposed and the positive and negative electrodes are alternated while interposing a separator through which the electrolyte and ions pass through the positive and negative electrode active material electrodes A plurality of unit cells having the above laminate,
Overlapping the single cells, and a partition laminate sheet interposed between the single cells,
An exterior laminate sheet for sealing the whole connected single cells;
A laminate type energy device comprising: an electrolyte solution injected between the exterior laminate sheet and the partition laminate sheet, and being electrically connected through the extraction electrode.   2. The laminated energy device according to claim 1, wherein the lead electrode of each single cell has a positive electrode and a negative electrode connected to each other, and the whole of the plurality of single cells is connected in series.   2. The laminated energy device according to claim 1, wherein the lead electrodes of each single cell have positive electrodes and negative electrodes connected to each other and the plurality of single cells are connected in parallel.   The laminate type energy device according to any one of claims 1 to 3, wherein the connection is performed by welding an exposed portion of the extraction electrode.   5. The laminated energy device according to claim 2, wherein when the two single cells are stacked, one positive electrode and the other negative electrode are arranged to face each other.   The laminated energy device according to any one of claims 1 to 5, wherein a tab electrode is joined to the connected extraction electrode and the extraction electrodes on both ends.   The laminate type energy device according to any one of claims 3 to 6, wherein the number of the tab electrodes is a total number obtained by adding 1 to the number of single cells connected in series.   The laminate type energy device according to any one of claims 1 to 7, wherein the partition laminate sheet has a configuration in which a metal foil is sandwiched between two thermoplastic resin films. At the end on the single cell side of the tab electrode, a sealing portion made of a thermoplastic resin is provided,
The laminated energy device according to any one of claims 1 to 8, wherein a cut portion in which the sealing portion is accommodated is formed at an edge portion of the partitioning laminate sheet.   The laminate-type energy device according to claim 9, wherein the cut portion is sealed so that the metal foil is not exposed from an end portion by melting of a thermoplastic resin film.   The laminate type energy device according to any one of claims 1 to 6, wherein the number of the partition laminate sheets is a total number obtained by subtracting 1 from the number of connected single cells. The extraction electrode and the tab electrode are joined outside the sealing portion,
The end portion of the tab electrode is covered and insulated by the sealing portion that is simultaneously compressed and spread when the laminate sheet for exterior packaging is compressed and sealed. 2. A laminate type energy device according to item 1. The exterior laminate sheet has a configuration in which a metal foil is sandwiched between a thermoplastic resin film and a high melting point resin film,
The laminated energy device according to any one of claims 1 to 12, wherein the single cell connected is covered so that the film side of the high melting point resin is on the outside. At least two layers laminated so that the positive and negative electrode lead electrodes are exposed and the positive and negative electrodes are alternated while interposing a separator through which the electrolyte and ions pass through the positive and negative electrode active material electrodes A step of superposing a plurality of single cells comprising the above laminate;
Welding the lead electrodes, and connecting the plurality of single cells in parallel or in series; and
Welding the tab electrode to the connected extraction electrode and the extraction electrodes on both ends; and
A step of providing a sealing portion made of a thermoplastic resin at the end of the tab electrode on the unit cell side;
A step of sandwiching a partition laminate sheet in which a cut portion in which the sealing portion is accommodated is formed between the single cells;
A step of covering the connected single cells with an exterior laminate sheet;
In a state where an opening is formed in part, the step of fusing the edge of the laminate sheet for exterior packaging,
A step of injecting an electrolyte solution between the exterior laminate sheet and the partition laminate sheet through the opening;
A process for fusing and sealing the opening.   The method for manufacturing a laminated energy device according to claim 14, wherein the step of fusing and sealing the opening is performed in a vacuum.

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