JP2012221589A - Laminate type energy device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminate type energy device having improved sealability and adhesion of a laminate and a sealing body housing it and an improved space-saving property, and using sealing means with good productivity and reliability.SOLUTION: A laminate type energy device comprises at least two layers of laminate 80, laminated so that positive and negative extraction electrodes 32a, 32b are exposed and positive and negative electrodes are alternated while a separator 30, through which only electrolyte ions can permeate, is interposed between positive and negative active material electrodes 10, 12; and contact holes 20a, 20b for spot-jointing the laminate type energy device to a module substrate 100. In the laminate 80, laminate sheets 40a, 40b are overlaid and compression-sealed from a front face and a rear face of the laminate 80.

Description

  The present invention relates to a laminate type energy device, and more specifically to a laminate type energy device useful for an internal electrode of an electric double layer capacitor, a lithium ion capacitor, a lithium ion battery or the like.

  Conventionally, as a laminate type energy device, a laminate type power storage device, an electric double layer capacitor, and the like are known. For example, a laminate-type electricity storage 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. In order to be able to connect to each other, it has a lead-out electrode drawn out from the laminate to the outside of the laminate sheet.

  For example, as shown in FIG. 2A, the conventional laminate-type electricity storage device has many structures in which a pair of positive and negative lead electrodes 220a and 220b are extended from the laminate-type electricity storage device 180. When the lines of the lead electrodes 220a and 220b become long, as shown in FIG. 2B, the space on the module substrate 100 is occupied as much, and space saving becomes difficult. In addition, at high frequencies, there is a lot of reactance (coil resistance component), which increases the impedance. Furthermore, if solder welding is performed in the welding holes 250a and 250b of the solder joints 240a and 240b in order to place the laminate-type electricity storage device 180 on the module substrate 100, a thermal load is applied to the electrolyte inside the laminate-type electricity storage device 180. , Leading to deterioration of characteristics.

  Moreover, in the conventional laminate-type electricity storage device, in order to form a laminated body in which electrodes and separators are laminated, the laminated body is also fastened with a tape so that the laminated body structure does not collapse. Alternatively, stacking is performed so that the separator is exposed outside the stacked body (that is, the separator is made larger than the electrode), and the exposed separator is tied with a string or the like so that the stacked body structure does not collapse. There was also a case of doing so. In this way, when reinforcing means such as tape and string are used, when the laminated body is sealed with a laminate sheet, traces of the tape or string, etc. of the reinforced part are raised, uneven adhesion, poor appearance, etc. In addition, the number of complicated processes for taking reinforcement measures increases, leading to an increase in cost.

  Further, if the separator is made larger than the electrode (the area is not widened), the separator will be short-circuited. As the separator becomes larger, the package becomes larger accordingly, making it difficult to incorporate it into the set.

  In connection with these, for example, in an electric double layer capacitor in which a polarizable electrode, a collector electrode, and a separator are stacked and impregnated with an electrolyte, at least the polarizable electrode and the collector electrode are sewn with a sewing thread and integrated. Further, a technique for improving the workability while improving the electrical contact between electrodes is disclosed by further laminating a plurality of layers including separators and sewing and integrating them with a sewing thread (for example, Patent Document 1).

  On the other hand, by alternately stacking the required number of collecting electrodes provided with a polarizable electrode layer on the surface of the band-shaped metal foil and the required number of band-shaped separators, folding them in a folding screen, and impregnating the separator with an electrolyte solution Then, an electric double layer capacitor element is formed and sealed in a suitable bag, and a lead tab made of a thin metal plate is mechanically and electrically coupled to each collector electrode, and these lead tabs are passed through the sealing port of the bag. A technique for providing a thin and high-capacitance capacitor by being led out to the outside world is disclosed. (For example, refer to Patent Document 2).

  Further, in a battery and an electric double layer capacitor in which a basic cell having a separator, a pair of electrodes stacked opposite to each other and the electrolytic solution is packaged in a resin sheet container, the basic cell is a sheet-shaped current collector. The sheet-like current collector extends to the edge of the resin sheet container over the periphery of the basic cells laminated on both sides, and is bonded to the resin sheet container at the edge. A small battery that has a sufficient cell voltage or capacitor withstand voltage by adhering basic cells adjacent to each other via a sheet-like current collector in a liquid-tight manner in a resin sheet container. In addition, a technique for providing an electric double layer capacitor is also disclosed (see, for example, Patent Document 3).

JP 2000-12407 A JP 2001-338848 A JP 2003-217646 A

  An object of the present invention is to improve sealing and adhesion between a laminated body and a sealing body that accommodates the laminated body and a space-saving property even in a laminate type energy device, and has high productivity and reliability. An object of the present invention is to provide a laminate type energy device using the means.

  Another object of the present invention is to provide a laminate type energy device using a sealing means that has a compact shape, improves high frequency characteristics, and is highly productive and reliable.

  According to one aspect of the present invention, (a) a positive electrode and a negative electrode are exposed such that a positive electrode and a negative electrode are exposed while a separator through which only electrolyte ions pass is interposed in an active material electrode of positive and negative electrodes. And (b) a contact hole for spot-bonding the laminate type energy device to the module substrate, and (c) the laminate is a laminate sheet. Is laminated and compressed and sealed from the front surface and the rear surface of the laminate.

  According to another aspect, (a) a positive electrode and a negative electrode are exposed such that a positive and negative electrode active material electrode is connected to a series of separators through which only ions of the electrolytic solution pass. And (b) the active material, wherein the negative electrode and the negative electrode are alternately stacked, and at least two layers are stacked such that the separator is stacked on the uppermost part and the lowermost part of the stacked body. (C) The separator includes a bonding structure in which the separators are punched together in the laminate of the electrode and the separator, and the fiber structures of the end surfaces of the separators are entangled with each other at the end surfaces of the separators. A laminate type energy device is provided that has a larger area than the active material electrode so as to cover the entire active material electrode.

  According to the present invention, even in a laminate type energy device, sealing performance, adhesion and space saving between a laminate and a sealing body that accommodates the stacked body are improved, and productivity and reliability are sealed. A laminate type energy device using the means can be provided.

  Further, according to the present invention, it is possible to provide a laminate type energy device using a sealing means having a compact shape, improving high frequency characteristics, and having high productivity and reliability.

The perspective view which illustrates the module substrate which mounted the lamination type electrical storage device shown in FIG. 16 produced by 1st Embodiment. (A) Perspective view showing a conventional laminate-type electricity storage device, (b) Perspective view showing an example of a module substrate on which a conventional laminate-type electricity storage device is mounted. The top view which illustrates the laminated body which laminated | stacked the electrode and separator in the lamination type electrical storage device produced by 1st Embodiment. In the first embodiment, (a) a top view illustrating a tab electrode with a sealing material (before processing) used in the laminate shown in FIG. 3, and (b) with a sealing material used in the laminate shown in FIG. The top view which illustrates a tab electrode (after processing). FIG. 4 is a top view illustrating a power storage device in which a tab electrode with a sealing material illustrated in FIG. 4B is bonded to the aluminum lead electrode of the stacked body illustrated in FIG. 3 in the first embodiment. Sectional drawing along the II line | wire of the laminated body of FIG. 3 in 1st Embodiment. Sectional drawing along the II-II line of the laminated body of FIG. 3 in 1st Embodiment. The figure which shows the example which implement | achieved multilayered structure of the laminated body used in 1st Embodiment. FIG. 6 is a front view illustrating an aluminum laminate sheet in which holes corresponding to the positions of the holes (holes) of the tab electrode shown in FIG. 5 are opened in advance in the first embodiment. The top view which illustrates a mode that the aluminum laminate sheet shown in FIG. 9 was piled up on the electrical storage device shown in FIG. 5 in 1st Embodiment. FIG. 10 is a top view illustrating a state in which the aluminum laminate sheet illustrated in FIG. 9 is compressed and sealed from the front surface and the rear surface and an electrolyte injection port is provided in the electricity storage device illustrated in FIG. 5 in the first embodiment. The figure which illustrates a mode that the electrical storage device shown in FIG. 11 is put into an electrolyte solution tank, the electrolyte solution is impregnated, and energization aging is performed in the first embodiment. The figure which illustrates the electrical storage device which pulled up the electrical storage device shown in FIG. 12 from the electrolyte solution tank in 1st Embodiment, and was sealed so that an electrolytic solution injection port might be closed with an aluminum laminate sheet. FIG. 14 is a diagram showing an example in which the aluminum tab electrode of the electricity storage device shown in FIG. . In 1st Embodiment, it is a figure which illustrates a mode that the aluminum laminate sheet of the electrical storage device shown in FIG. 14 was compressed again, and the aluminum end surface was insulated, (a) is the top view, (b) is Sectional drawing along a III-III line. The figure which illustrates a mode that the electrical storage device shown in FIG. 15 was isolate | separated in 1st Embodiment, respectively, and was completed as one laminate type electrical storage device. The figure which illustrates the variation of the position of the tab electrode extraction hole provided in the lamination type electrical storage device in 1st Embodiment. FIG. 18 is a diagram illustrating a variation of the laminate type electricity storage device in which an aluminum tab electrode is arranged in accordance with the position of the tab electrode extraction hole shown in FIG. 17 according to the first embodiment. b) corresponds to FIG. 17A, and FIGS. 18C and 18D correspond to FIG. 17C. The front view which illustrates the electric double layer capacitor internal electrode in a 2nd embodiment. In the second embodiment, a front view illustrating a lithium ion capacitor internal electrode. The front view which illustrates the lithium ion battery internal electrode in 2nd Embodiment. In 2nd Embodiment, it is a front view which illustrates the sheet | seat by which the active material was separately coated on the upper surface of aluminum foil, Comprising: (a) is a positive electrode sheet, (b) is a negative electrode sheet. In 2nd Embodiment, it is a front view which illustrates the aluminum electrode which punched the sheet | seat shown in FIG. 22 in arbitrary electrode structures, Comprising: (a) is the aluminum electrode by the side of a positive electrode, (b) is aluminum by the side of a negative electrode electrode. In the second embodiment, with respect to the aluminum electrode shown in FIG. 23, the extraction electrodes are arranged between the positive electrodes / negative electrodes while being aligned, such as a separator, a positive electrode, a separator, a negative electrode, a separator, a positive electrode,. The perspective view which illustrates the laminated body welded (resistance welding, ultrasonic welding). Sectional drawing along the III-III line of the laminated body shown in FIG. 24 in 2nd Embodiment. The perspective view which illustrates the punching die for punching out the separator of the laminated body shown in FIG. 24 in 2nd Embodiment. The perspective view of the laminated body which illustrated the welding part which welds the extraction electrode of the laminated body shown in FIG. 24 prior to punching in 2nd Embodiment. The perspective view which illustrates the laminated body which showed the punching part which punches out the separator of the laminated body shown in FIG. 27 with a punching die in 2nd Embodiment. In 2nd Embodiment, the perspective view of the laminated body which illustrated the mode after punching the separator of the laminated body shown in FIG. 28 with the punching die. Sectional drawing along the IV-IV line of the laminated body shown in FIG. 29 in 2nd Embodiment. In the second embodiment, the laminated layer illustrated as an example after the external extraction tab electrode (aluminum tab electrodes 34a and 34b) is welded to the extraction electrode of the multilayer body shown in FIG. 29 and the common electrode portion is produced as the tab electrode. Front view of the body. The front view of the laminated body which illustrated a mode that the laminated body (separator after stamping) shown in FIG. 31 was laminated with the aluminum laminate material in the second embodiment. Sectional drawing which illustrates the laminated body (separator after stamping) laminated with the aluminum laminate material shown in FIG. 32 in 2nd Embodiment. Sectional drawing which illustrates the detail of the laminated body (separator after stamping) laminated in the aluminum laminate material shown in FIG. 32 in 2nd Embodiment. The figure which shows the example which forms the aluminum electrode shown in FIG. 23 by roll press (roll toe roll technique) in 2nd Embodiment.

  Next, embodiments of the present invention 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 of each component 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, and structure of each component. The arrangement is not specified below. Various modifications can be made to the embodiment of the present invention within the scope of the claims.

[First Embodiment]
(Basic structure of laminated energy device)
A basic structure of a laminated energy device according to the first embodiment, for example, an electricity storage device, will be described with reference to FIGS. 1 and 3 to 18.

  In the laminated electricity storage device 18 according to the first embodiment, the positive and negative electrode lead electrodes 32a and 32b are exposed while the separator 30 through which only electrolyte ions pass is interposed in the positive and negative electrode active material electrodes 10 and 12. And at least two or more stacked bodies 80 in which positive electrodes and negative electrodes are alternately stacked, and contact holes 20a and 20b for spot-bonding the laminated energy device to the module substrate 100. The laminate 80 is compressed and sealed with the laminate sheets 40a and 40b overlapped from the front and rear surfaces of the laminate 80.

  As illustrated in FIG. 1, the laminate type electricity storage device 18 according to the first embodiment includes contact holes (joining holes) 20 a and 20 b for spot joining the laminate type electricity storage device 18 to the module substrate 100. Yes. For example, the laminated power storage 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 power storage 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 electricity storage device 18, it contributes to the mounting of the laminate type electricity storage device 18 in a limited space. In addition, since spot bonding at the contact holes (bonding holes) 20a and 20b is realized at the time of module mounting, the thermal load on the electrolyte solution impregnated in the laminate 80 inside the laminate type power storage device 180 is suppressed, The contribution of the coil component is also reduced, and the high frequency characteristics are improved.

  Further, as shown in FIGS. 3 to 18, the contact holes 20 a and 20 b provided in the laminate type electricity storage device 18 according to the first embodiment are tab electrode takeouts for taking out the tab electrodes 34 (34 a and 34 b). Since the holes 20a and 20b can be used as well, there is no need for a structure in which the tab electrodes 34 (34a and 34b) are drawn out to the outside. Therefore, the laminate type electricity storage device 18 does not require an extraction electrode, can realize a compact shape, and can be easily incorporated into a module. That is, it is not necessary to route the tab electrode from the laminate type electricity storage device when modularizing.

  Specifically, as illustrated in FIGS. 3 to 8, part of both surfaces of the sealing portion (sealant) 36 of the (aluminum) tab electrode 34 (34 a, 34 b) used for the (aluminum) extraction electrodes 32 a, 32 b. The tab electrode 34 (34a, 34b) is scraped until the aluminum material is exposed to form tab electrode extraction holes 20a, 20b. As illustrated in FIG. Holes 44a and 44b are made in advance at the same position as 20b. When sealing the laminated body 80 of internal electrodes, as illustrated in FIGS. 10 to 15, the laminate sheet 40 is removed from the front and rear surfaces of the laminated body 80 with tab electrode extraction holes 20 a and 20 b and holes 44 a and 44 b. Compressed and sealed together. The tab electrode extraction holes 20a and 20b and the holes 44a and 44b do not need to be circular holes, and holes having a desired shape can be adopted.

  As illustrated in FIGS. 6 to 9, the internal electrode structure (for example, the power storage element) in the laminate-type power storage device 18 according to the first embodiment is electrolyzed with at least two layers of active material electrodes 10 and 12. Lamination of a multilayer structure in which the extraction electrodes 32 (32a, 32b) are exposed and the positive electrodes 10 and the negative electrodes 12 are alternately laminated while interposing a separator 30 through which only ions of the liquid 44 pass. It is composed of a body 80. The lead electrodes 32 (32a, 32b) are joined to the tab electrodes 34a, 34b in the sealing portions (sealants) 52a, 52b, respectively. As illustrated in FIGS. 6 to 9, 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. As illustrated in FIG. 5, the separators 30 are laminated so that the separators 30 are laminated on the uppermost part and the lowermost part of the laminated body. 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.

  As illustrated in FIG. 14, when the laminated power storage device 18 is commercialized, the tab electrodes 34 a and 34 b exposed from the sealing portion 36 are cut. However, since it is necessary to perform energization aging (initial energization), as illustrated in FIG. 12, the power storage device 18 is placed in the electrolyte bath 45 and immersed in the electrolyte 44, and the stacked active material electrodes 10 and 12 are stacked. The upper portions of the tab electrodes 34a and 34b are left as they are until an electrolyte is contained therebetween and energization aging is performed. In addition, as illustrated in FIG. 14, the electrolytic solution 44 is caused to enter from an electrolytic solution injection port 48 formed when the laminate sheet 40 is compressed and sealed from the front and rear surfaces.

  As illustrated in FIG. 15, the laminate sheet 40 of the electricity storage device 18 is compressed again (resealed) to insulate the cut end faces of the tab electrodes 34 a and 34 b. The tip portions of the cut tab electrodes 34a and 34b are covered by the compressed and expanded sealing portions (sealants) 52a and 52b (the sealing portions 52a and 52b that are thermally compressed and the sealing member is melted and spread) The cut end surfaces of the tab electrodes 34a, 34b are protected and insulated). Thereby, it is possible to prevent troubles such that the cut end faces of the tab electrodes 34a and 34b are exposed and short-circuited or contacted with other devices 120, 140, 160, and 170 and energized. Further, the periphery of the tab electrode extraction holes 20a and 20b and the holes 44a and 44b are also covered with the compressed and expanded sealing portions 52a and 52b, so that the electrolyte solution 44 impregnated in the laminate 80 is prevented from leaking. In addition, troubles such as a short circuit due to contact between the exposed end surfaces of the aluminum material exposed from the ends of the holes 44a and 44b formed in the laminate sheet 40 and the tab electrodes 34a and 34b can be prevented.

  Further, the balance terminals in series and parallel can also be contacted from the tab electrode extraction holes 20a and 20b and the holes 44a and 44b.

(Lamination type energy device manufacturing method)
With reference to FIGS. 1 and 3 to 18, a manufacturing method of a laminated energy device according to the second embodiment, for example, an electricity storage device 18 will be described.

(A) As illustrated in FIGS. 3 and 6 to 8, the inside is a laminate in which at least two layers of active material electrodes 10 and 12 are laminated so that the positive electrodes 10 and the negative electrodes 12 are alternately arranged. An electrode structure (for example, a storage element) 80 is configured. At this time, the extraction electrodes 32 a and 32 b are exposed from the internal electrode structure 80. In addition, the separators 30 are stacked between the active material electrodes 10 and 12 with the separators 30 interposed therebetween. In order to prevent a short circuit, the separator 30 is larger than the active material electrodes 10 and 12 (one having a large area) so as to cover the entire active material electrodes 10 and 12, and the uppermost part and the lowermost part of the laminate. Are stacked such that separators 30 are stacked instead of electrodes.

(B) Next, the tab electrode 34 with the sealing portion 36 for bonding to the extraction electrodes 32a and 32b exposed from the stacked body 80 is formed and processed. 4A illustrates the tab electrode 34 with the sealing portion 36 before processing, and FIG. 4B illustrates the tab electrode 34 with the sealing portion 36 after processing. The tab electrode 34 can be formed from Al, Ni, Cu, or the like, for example. The sealing part (sealant) 36 can be formed from, for example, polypropylene resin. In the sealing portion 36, tab electrode extraction holes 20 (20a, 20b) are formed on both surfaces (both front and back). The tab electrode extraction hole 20 is formed by scraping both surfaces of the sealing portion 36 until the material (for example, Al) of the tab electrode 34 becomes visible.

(C) Next, as illustrated in FIGS. 5 to 8, the lead electrodes 32 a and 32 b exposed from the stacked body 80 and the tab electrodes 34 a and 34 b are joined at the sealing portions 36 a and 36 b to form electrodes. To do. For such joining with electrodes, for example, ultrasonic welding or the like is used.

(D) On the other hand, as illustrated in FIG. 9, two laminate sheets 40 (front laminate sheet for the front surface) in which holes 44 a and 44 b aligned with the positions of the tab electrode extraction holes 20 (20 a and 20 b) are formed in advance. 40a and rear laminate sheet 40b) are prepared in advance.

(E) Next, as illustrated in FIGS. 10 to 11, the laminate sheets 40 a and 40 b shown in FIG. 9 are stacked on the laminate 80 shown in FIG. When the laminate sheets 40 a and 40 b are compression-sealed, they are compressed along a laminate line (compression line) 46. Thereby, the electrolyte injection port 48 is simultaneously formed. In this compression sealing step, a part of the sealing portions 36a, 36b is protruded from the sealed laminate sheets 40a, 40b by a predetermined length, and the tab electrodes 34a, 34b are also laminated sheet 40a. , 40b is left exposed to the outside.

(F) Next, as illustrated in FIG. 12, the laminated electricity storage device 18 is immersed in the electrolytic solution bath 45 containing the electrolytic solution 44, and the electrolytic solution 44 is introduced into the laminate 80 from the electrolytic solution inlet 48. The electrolyte is contained between the active material electrodes 10 and 12 which are impregnated and laminated. At this time, energization aging is simultaneously performed from the tab electrodes 34a and 34b exposed to the outside of the laminate sheets 40a and 40b, and degassing is performed.

(G) Thereafter, as illustrated in FIG. 13, the laminate sheets 40 a and 40 b of the electricity storage device 18 lifted from the electrolyte bath 45 are compressed along the laminate line 51 from the front surface and the rear surface, and the electrolyte injection port 48. Close.

(H) Next, as illustrated in FIG. 14, the tab electrodes 34 a and 34 b exposed from the sealing portion 36 are cut.

(I) Next, as illustrated in FIG. 15, the laminate sheets 40a and 40b are compressed again from the front and rear surfaces to insulate the aluminum cut end surfaces of the tab electrodes 34a and 34b. At this time, the tips of the cut tab electrodes 34a and 34b are covered by the compressed and expanded sealing portions (sealants) 52a and 52b (sealing portions 52a and 52a, which are thermally compressed and the sealing member melts and expands). The cut end faces of the tab electrodes 34a and 34b are covered and protected by 52b and are insulated. FIG. 14B shows a state in which the tip surfaces of the cut tab electrodes 34a and 34b are exposed, and FIG. 15B shows that the tip surfaces of the cut tab electrodes 34a and 34b are compressed. A state is shown in which it is covered with the expanded sealing portions 52a and 52b.

(J) Next, as illustrated in FIG. 16, the electricity storage devices shown in FIG. 15 are separated from each other to complete each laminate-type electricity storage device 18.

  FIG. 17 illustrates a variation of the positioning of the tab electrode extraction hole 20 (20a, 20b) provided in the laminate type electricity storage device 18, and FIG. 18 illustrates the tab electrode extraction hole shown in FIG. FIG. 18 is a diagram illustrating a variation of the laminate type electricity storage device 18 in which the tab electrodes 34a and 34b are arranged in accordance with the position of 20 (20a and 20b), and FIGS. 18 (c) and (d) correspond to FIG. 17 (c).

  As described above, according to the laminate type energy device and the manufacturing method thereof according to the first embodiment, the contact for spot joining the laminate type electricity storage device 18 to the module substrate 100 to the laminate type electricity storage device 18. Since the holes (joining holes) 20a and 20b are provided, it contributes to the mounting of the laminate type electricity storage device 18 in a limited space. In addition, since spot bonding at the contact holes 20a and 20b is realized at the time of module mounting, the thermal load on the electrolyte solution impregnated in the laminate 80 inside the laminated power storage device 180 is suppressed, and the contribution of the coil component And the high frequency characteristics are improved.

  Further, according to the laminate type energy device and the manufacturing method thereof according to the first embodiment, the contact holes 20a and 20b have the tab electrode extraction holes 20a and 20b for extracting the tab electrodes 34 (34a and 34b). Since it can serve also, it is not necessary to make the structure which pulls out tab electrode 34 (34a, 34b) outside. Therefore, when modularizing, it is not necessary to draw the tab electrode from the laminate-type power storage device, a compact shape can be realized, and it is easy to incorporate into the module.

  In addition, according to the laminate type energy device and the manufacturing method thereof according to the first embodiment, when the laminate type electricity storage device 18 is commercialized, the tab electrodes 34a and 34b exposed from the sealing portion 36 are used. Although cutting is performed, energization aging is possible by leaving the upper portions of the tab electrodes 34a and 34b until energization aging (initial energization) is performed.

  According to the laminate type energy device and the manufacturing method thereof according to the first embodiment, as illustrated in FIG. 15, the laminate sheet 40 of the electricity storage device 18 is compressed to insulate the cut end surfaces of the tab electrodes 34a and 34b. To do. The ends of the cut tab electrodes 34a and 34b are covered and protected and insulated by the compressed and expanded sealing portions (sealants) 52a and 52b. Thereby, it is possible to prevent troubles such that the cut end faces of the tab electrodes 34a and 34b are exposed and short-circuited or contacted with other devices 120, 140, 160, and 170 and energized. Further, the periphery of the tab electrode extraction holes 20a and 20b and the holes 44a and 44b are also covered with the compressed and expanded sealing portions 52a and 52b, so that the electrolyte solution 44 impregnated in the laminate 80 is prevented from leaking. In addition, troubles such as a short circuit due to contact between the exposed end surfaces of the aluminum material exposed from the ends of the holes 44a and 44b formed in the laminate sheet 40 and the tab electrodes 34a and 34b can be prevented.

[Second Embodiment]
(Basic structure of laminated energy device)
With reference to FIGS. 19 to 33, a basic structure of a laminated energy device (for example, an electricity storage device) according to the second embodiment will be described.

  FIG. 19 illustrates the basic structure of the electric double layer capacitor internal electrode in the second embodiment. In the electric double layer capacitor internal electrode according to the second embodiment, the separator 30 through which only ions of the electrolytic solution 44 pass is interposed between the active material electrodes 10 and 12 of at least one layer, and the extraction electrodes 32a and 32b are active material electrodes. 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 electric double layer capacitor internal electrode is impregnated with the electrolytic solution 44, and only ions of the electrolytic solution move through the separator 30 during charging and discharging.

  FIG. 20 illustrates the basic structure of the lithium ion capacitor internal electrode in the second embodiment. In the internal electrode of the lithium ion capacitor in the second embodiment, a separator 30 through which only ions of the electrolytic solution 44 pass is interposed between at least one layer of the active material electrodes 11 and 12, and the extraction electrodes 33 a and 32 b are the active material electrodes 10. , 12 and the extraction electrodes 33a, 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 the electrolytic solution 44, and only ions of the electrolytic solution move through the separator 30 during charging and discharging.

FIG. 21 illustrates the basic structure of the internal electrode of the lithium ion battery in the second embodiment. In the lithium ion battery internal electrode in the second embodiment, the separator 30 through which only ions of the electrolytic solution 44 pass is interposed in at least one layer of the active material electrodes 11 and 13, and the extraction electrodes 33 a and 32 b are the active material electrodes 11. , 13 and the extraction electrodes 33a, 32b are connected to a 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 internal electrode of the lithium ion battery is impregnated with the electrolytic solution 44, and only ions of the electrolytic solution move through the separator 30 during charging and discharging.

  The laminate type energy device according to the second embodiment has positive and negative electrode extraction electrodes while a separator 30 through which only ions of the electrolytic solution 44 are interposed between the positive and negative electrode active material electrodes 10 and 12 connected in series. Laminates of at least two or more layers laminated so that the positive electrodes and the negative electrodes are alternately arranged so that 32a and 32b are exposed, and the separators 30 are laminated on the uppermost part and the lowermost part, respectively. 80 and a laminated structure 80 of the active material electrodes 10 and 12 and the separator 30, the separators 30 are punched out together, and the end face of the separator 30 is joined to the fiber structure of the end faces of the separator 30 intertwined with each other. The separator 30 has a larger area than the active material electrodes 10 and 12 so as to cover the entire active material electrodes 10 and 12.

  As illustrated in FIGS. 22 to 25, an internal electrode structure (for example, an electricity storage element) 80 of a laminate type energy device (for example, an electricity storage device) according to the second embodiment is an active material electrode having at least two layers. 10 and 12, with the separator 30 through which only ions of the electrolytic solution 44 are interposed, a multilayer in which the extraction electrodes 32 a and 32 b are exposed and the positive electrode 10 and the negative electrode 12 are alternately stacked. Each of the stacked bodies 80 is composed of a series of active material electrode structures and separators 30 in a stacked body structure. As illustrated in FIG. 25, 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. In the upper part (and the lowermost part), not the electrodes but the separators 30 are stacked. The separator 30 uses a material containing a fiber material such as cellulose or glass fiber.

  Note that the series of active material electrodes 10 and 12 and the extraction electrodes 32a and 32b are each formed from a pair of electrode sheets, for example, two sheets of aluminum foil. FIG. 22A illustrates a positive electrode sheet, and FIG. 22B illustrates a negative electrode sheet. On each electrode sheet, the portions coated with active material such as activated carbon are used as active material electrodes 10 and 12 (active material electrode 12 on the positive electrode side, active material electrode 12 on the negative electrode side), and the active material is applied. The non-applied portions (uncoated portions) are used as extraction electrodes 32a and 32b (positive electrode 32b and negative electrode 32a). In this way, the sheet electrode sheet coated with the active material is punched into an arbitrary electrode structure and used as an aluminum electrode, as illustrated in FIG. In addition to the activated carbon, a paste mixed with a binder (polytetrafluoroethylene (PTFE) or vinylidene fluoride resin (PUDF)) or a conductive additive (acetylene black or ketjen black) is applied on the electrode sheet.

  In the laminate (each cell) 80 of the active material electrode structures 10 and 12 and the separator 30, when the separators 30 are punched together, the end surfaces of the separators 30 are joined to each other at the end surfaces of the separators 30. . That is, a separator (cell) 80 of the active material electrode structures 10 and 12 connected to each other and the separator 30 is combined with the separators 30 with the punching blades 102 and 104 as illustrated in FIG. When punched out, as illustrated in FIGS. 27 to 29, the fiber structures of the end faces of the separators 30 are entangled with each other, whereby the separators 30 are bonded to each other. Therefore, in order to prevent the formed laminated body 80 from collapsing, there is no need to fasten the laminated body 80 with a tape or tie the exposed separators 30 with a string or the like. Therefore, when the laminated body 80 is sealed with the (aluminum) laminate sheet 40, the reinforcing means does not cause unevenness of adhesion, poor appearance or the like due to the traces of the tape or string of the reinforced portion being raised. It is also possible to omit a complicated process for taking steps. Further, since only the end faces of the separator 30 are bonded to each other, the active material electrodes 10 and 12 do not protrude, and therefore the separator can be minimized to the size of the active material electrodes 10 and 12 as much as possible. Accordingly, the laminate sheet 40 becomes smaller, the package can be reduced in size, and it can be easily incorporated into a set.

  As illustrated in FIGS. 23 to 25 and FIGS. 27 to 29, the active material electrode structures of the active material electrodes 10 and 12 are formed by connecting a plurality of electrode structures in series by a common electrode member (extraction electrodes 32 a and 32 b). The active material electrode structure of the series of active material electrodes 10 and 12 is alternately laminated with a single separator 30 corresponding thereto. It will be done. Specifically, as illustrated in FIG. 25, the separator 30, the positive electrode active material electrode 12, the separator 30, the negative electrode active material electrode 10, the separator 30, the positive electrode active material electrode 12, the separator 30, the negative electrode active material electrode 10, and the separator 30,... Are stacked one by one while aligning a predetermined number of sheets. Furthermore, as illustrated in FIG. 25, the separators 30 are laminated so that the separators 30 are laminated on the uppermost part and the lowermost part of the laminated body 80.

  Further, as illustrated in FIG. 26, in the stacked body 80 of the active material electrode structures 10 and 12 and the separator 30, the punching die used when punching the separators 30 together is a punching die base 101. The punching blades 102 and 104 and the cushion (sponge placement portion) 103 formed inside the punching blades 102 and 104 are provided. As shown in FIG. 28, the punching blades 102 and 104 are aligned with the positions of the punched portions 35 that are portions where the separators 30 are punched in the laminate 80 of the active material electrode structures 10 and 12 and the separators 30. Has been placed.

  The positive and negative lead electrodes 32a and 32b exposed from the separator 30 are not punched on the punching blades 102 and 104 arranged corresponding to the punching portion 35 (out of the punching range). In addition, a so-called “escape” part is provided. That is, the punching blades 102 and 104 are formed and arranged on the punching die base 101 so as not to punch the separator 30 in the lead electrodes 32a and 32b. The cushion (sponge arrangement portion) 103 protects the stacked body 80 of the active material electrode structures 10 and 12 and the separator 30 during the punching process.

  In addition, when the laminated body 80 of a series of active material electrode structures and the separators 30 is laminated, as shown in FIG. 27, prior to the punching process, the laminated lead electrodes 32a and 32b are connected to the positive electrodes. / The negative electrodes are welded to each other with welded portions 37a and 37b so that the lead electrodes 32a and 32b do not fall apart or shift. As a result, the electrodes of the lead electrodes 32a and 32b are aligned in the vertical direction before the punching process, so that the punching blades 102 and 104 do not come into contact with the lead electrodes 32a and 32b during the punching process. They can be punched and bonded together. In addition, when welding each extraction electrode 32a and 32b by each welding part 37a and 37b, respectively, resistance welding, ultrasonic welding, etc. are used, for example.

  FIG. 31 illustrates a state in which aluminum tab electrodes 34a and 34b for external extraction are welded to the extraction electrodes 32a and 32b after the punching process of the separator 30, and the common electrode portion is produced as a tab electrode. At this time, a common electrode member (extraction electrodes 32a and 32b) is arranged above the tab electrodes 34a and 34b. After welding the positive and negative tab common aluminum electrodes 90a, 90b to the tab electrodes 34a, 34b, the common electrode members (leading electrodes 32a, 32b) are cut off and removed. The extraction electrodes 32a and 32b and the aluminum tab electrodes 34a and 34b are thermally welded through the holes 20a and 20b of the sealing materials 36a and 36b, respectively. The sealing materials 36a and 36b are formed of a resin material such as polypropylene, for example.

  Further, a portion (space) in which the separator 30 is punched and removed after the punching step between the separators 30 in the stacked body (each cell) 80 of the series of active material electrode structures and the separator 30 is illustrated in FIG. It becomes a place laminated from the front and back by the two laminate sheets 40. At this time, since the laminated body 80 of the series of active material electrode structures and the separator 30 is laminated by the laminate sheet 40 while being continuous, the mass production effect is enhanced. Further, as illustrated in FIG. 35, aluminum is applied to the laminated electrode structure 80 placed on the resin mold table 82 by a roll press (roll-to-roll technique) using a roll 110 having a punching blade 106 formed on the surface. Since the electrode 50 can be mass-produced, the effect is also high.

  Furthermore, when laminating with the laminate sheet 40, the laminate sheet 40 below each laminate (each cell) 80 is used as the electrolyte solution injection port 48 without being laminated. The electrolytic solution inlet 48 puts the electricity storage device 18 in the electrolytic solution bath 45 and is immersed in the electrolytic solution 44, contains an electrolyte between the stacked active material electrodes 10, 12, performs energization aging, and performs the electrolytic solution. After being lifted from the bathtub 45, it is laminated and sealed. By providing the electrolyte solution injection port 48 when laminating in this way, the electrolyte solution 44 can be simultaneously impregnated into each laminated body (each cell) 80, so that the mass production effect is enhanced. In addition, when injecting the electrolytic solution 44, a series of active material electrode structures are welded to the tab common aluminum electrodes 90a and 90b, respectively. The laminated body (cell) 80 can be subjected to energization aging.

  In addition, as illustrated in FIGS. 33 to 34, the laminate sheet 40 has an inner surface 43 (heat sealing surface) formed from, for example, polypropylene when laminated, and an outer surface when laminated. 41 is formed of a material such as PET, and an aluminum foil 42 is sandwiched between the inner side surface 43 and the outer side surface 41 to form a laminate sheet 40 (40a, 40b). Although the laminated body 80 illustrated in FIG. 34 has a two-layer structure, the number of layers is not limited to this, and any number of layers can be used.

(Lamination type energy device manufacturing method)
With reference to FIGS. 22 to 33, a manufacturing method of the laminated energy device according to the second embodiment, for example, the electricity storage device 18 will be described.

(A) As illustrated in FIG. 22, two electrode sheets made of a pair of aluminum foils are prepared, and active materials are separately applied to the upper surface of each electrode sheet. FIG. 22A illustrates a positive electrode sheet, and FIG. 22B illustrates a negative electrode sheet. On each electrode sheet, the portions coated with active material such as activated carbon are used as active material electrodes 10 and 12 (active material electrode 12 on the positive electrode side, active material electrode 12 on the negative electrode side), and the active material is applied. The non-applied portions (uncoated portions) are used as extraction electrodes 32a and 32b (positive electrode 32b and negative electrode 32a).

(B) Next, as illustrated in FIG. 23, each electrode sheet coated with the active material is punched into an arbitrary electrode structure to form an aluminum electrode. The active material electrode structure of the active material electrodes 10 and 12 is a structure in which a plurality of electrode structures are connected in series by a common electrode member (extraction electrodes 32a and 32b) (in the illustrated example, five electrodes). The structure is continuous). In actual mass production, each electrode sheet is wound into a roll shape for a long time.

(C) Next, as illustrated in FIGS. 22 to 25, the extraction electrode 32 a, while the separator 30 through which only ions of the electrolytic solution 44 pass are interposed in the active material electrodes 10, 12 of at least two layers or more. A multilayer structure having a multilayer structure in which the positive electrodes 10 and the negative electrodes 12 are alternately laminated so that the positive electrode 10 and the negative electrode 12 are alternately formed so that the multilayer structures 80 of the series of active material electrode structures and the separators 30 are formed. The Specifically, as illustrated in FIG. 25, the separator 30, the positive electrode active material electrode 12, the separator 30, the negative electrode active material electrode 10, the separator 30, the positive electrode active material electrode 12, the separator 30, the negative electrode active material electrode 10, and the separator 30,... Are stacked one by one while aligning a predetermined number of sheets. Furthermore, it laminates | stacks so that not the electrode but the separator 30 may be laminated | stacked on the uppermost part and the lowest part of the laminated body 80, respectively.

(D) On the other hand, as illustrated in FIG. 26, in the laminate 80 of the active material electrode structure of the active material electrodes 10 and 12 and the separator 30, a punching die used when punching the separators 30 together is prepared. .

(E) Next, as illustrated in FIG. 27, prior to the punching process, the stacked lead electrodes 32a and 32b are welded to the positive electrodes / negative electrodes by the welded portions 37a and 37b. When welding each extraction electrode 32a, 32b with each welding part 37a, 37b, respectively, for example, resistance welding, ultrasonic welding, or the like is used.

(F) Next, as illustrated in FIG. 28 to FIG. 29, punching as illustrated in FIG. 26 is performed with a stacked body 80 of the active material electrode structures 10 and 12 connected in series and the separator 30. When the separators 30 are punched together by the blades 102 and 104 along the punched portion 35, the fiber structures of the end faces of the separator 30 are entangled with each other, thereby bonding the separators 30 together. As illustrated in FIG. 30, the punched portions 35 of the individual stacked bodies 80 from which the separators 30 are punched are crushed and cut into a fiber-entangled bag shape between the separators 30. Therefore, in order to prevent the laminated body 80 from collapsing, there is no need for a process of fastening the laminated body 80 with a tape or tying the exposed separators 30 with a string or the like. The outermost separator 30 is larger than the separator 30 near the center, but this is finely adjusted according to the shape at the time of cutting.

(G) Next, as illustrated in FIG. 31, aluminum tab electrodes 34a and 34b for external extraction are welded to the extraction electrodes 32a and 32b after the punching process of the separator 30, and a common electrode portion is produced as a tab electrode. To do. At this time, a common electrode member (extraction electrodes 32a and 32b) is arranged above the tab electrodes 34a and 34b. After welding the positive and negative tab common aluminum electrodes 90a, 90b to the tab electrodes 34a, 34b, the common electrode members (leading electrodes 32a, 32b) are cut off and removed. The extraction electrodes 32a and 32b and the aluminum tab electrodes 34a and 34b are thermally welded through the holes 20a and 20b of the sealing materials 36a and 36b, respectively.

(H) Next, as illustrated in FIG. 32, a laminate 80 of the active material electrode structures 10 and 12 connected in series and the separator 30 is laminated from the front and back by two laminate sheets 40. . At this time, the laminate sheet 40 below each laminated body (each cell) 80 is used as the electrolyte solution injection port 48 without being laminated.

(I) Next, the laminated body 80 of the active material electrode structures 10 and 12 connected to the laminated series and the separator 30 is placed in the electrolytic solution bath 45 and immersed in the electrolytic solution 44. An electrolyte is contained between the active material electrodes 10 and 12 through the injection port 48. Further, energization aging is simultaneously performed from the positive and negative tab common aluminum electrodes 90a and 90b to perform degassing. In the first embodiment, energization terminals are connected to the aluminum tab electrodes 34a and 34b exposed for each stacked body 80 to perform energization aging (see FIG. 12), but in the second embodiment, Since a series of active material electrode structures are welded to the tab common aluminum electrodes 90a and 90b, respectively, when immersed in the electrolyte bath 45, a plurality of laminates (cells) 80 are simultaneously energized with one energizing terminal. be able to.

(J) Next, the laminated body 80 connected in series is lifted from the electrolytic solution bath 45, and then the portion of the electrolytic solution inlet 48 of each laminated body 80 is laminated and sealed.

(K) Next, the laminate 80 of the active material electrode structures 10 and 12 connected to the laminated series and the separator 30 is cut off, and the positive and negative tab common aluminum electrodes 90a and 90b are also cut. Then, each power storage device 18 is completed.

  As described above, according to the laminated energy device and the manufacturing method thereof according to the second embodiment, when the separators 30 are punched together, the fiber structures of the end faces of the separators 30 are entangled with each other, thereby The separators 30 are bonded together. Therefore, in order to prevent the formed laminated body 80 from collapsing, it is not necessary to fasten the laminated body 80 with a tape or tie the exposed separators 30 with a string or the like. Therefore, when the laminate 80 is sealed with the laminate sheet 40, the reinforcing portion is taken without causing traces of the tape or string of the reinforced portion to appear, resulting in non-uniform adhesion and poor appearance. The complicated process can be omitted. Further, since only the end faces of the separator 30 are bonded to each other, the active material electrodes 10 and 12 do not protrude, and therefore the separator can be minimized to the size of the active material electrodes 10 and 12 as much as possible. Accordingly, the laminate sheet 40 becomes smaller, the package can be reduced in size, and it can be easily incorporated into a set.

  In addition, according to the laminate type energy device and the manufacturing method thereof according to the second embodiment, the punching blades 102 and 104 arranged corresponding to the punching portion 35 have positive and negative electrodes exposed from the separator 30. In order to prevent the extraction electrodes 32a and 32b from being punched out, so-called “escape” portions are provided. As a result, the separators 30 in the extraction electrodes 32a and 32b are not punched out. Further, the cushion (sponge arrangement portion) 103 protects the laminate 80 of the active material electrode structure of the active material electrodes 10 and 12 and the separator 30 during the punching process.

  In addition, according to the laminate type energy device and the manufacturing method thereof according to the second embodiment, the active material electrode structures of the active material electrodes 10 and 12 are plural in series by the common electrode members (extracting electrodes 32a and 32b). Each electrode structure is a continuous structure (in the illustrated example, five electrode structures are connected), and the active material electrode structure of the series of active material electrodes 10 and 12 is one sheet corresponding to the active material electrode structure. The separators 30 are alternately stacked. Prior to the punching process, a series of stacked lead electrodes 32a and 32b are welded to the positive electrodes / negative electrodes by welding portions 37a and 37b, and the lead electrodes 32a and 32b are separated or displaced. Don't do it. As a result, the electrodes of the lead electrodes 32a and 32b are aligned in the vertical direction before the punching process, so that the punching blades 102 and 104 do not come into contact with the lead electrodes 32a and 32b during the punching process. They can be punched and bonded together.

  Moreover, according to the laminate type energy device and the manufacturing method thereof according to the second embodiment, the separator 30 is punched after the punching process between the separators 30 in the laminate 80 of the series of active material electrode structures and the separators 30. The removed portion (space) becomes a portion laminated from the front and back by the two laminate sheets 40. At this time, since the laminated body 80 of the series of active material electrode structures and the separator 30 is laminated by the laminate sheet 40 while being continuous, the mass production effect is enhanced. Further, as illustrated in FIG. 35, aluminum is applied to the laminated electrode structure 80 placed on the resin mold table 82 by a roll press (roll-to-roll technique) using a roll 110 having a punching blade 106 formed on the surface. Since the electrode 50 can be mass-produced, the effect is also high.

  In addition, according to the laminate type energy device and the manufacturing method thereof according to the second embodiment, when the laminate sheet 40 is laminated, the laminate sheet 40 below each laminate 80 is not laminated, but electrolysis is performed. Used as the liquid inlet 48. By providing the electrolyte solution injection port 48 when laminating in this way, the electrolyte solution 44 can be simultaneously impregnated into each laminated body (each cell) 80, so that the mass production effect is enhanced. Further, when injecting the electrolytic solution 44, a series of active material electrode structures are welded to the tab common aluminum electrodes 90a and 90b, respectively. The laminated body (cell) 80 can be subjected to energization aging.

  As described above, according to the laminate type energy device and the manufacturing method thereof according to the first to second embodiments, even in the laminate type energy device, the laminate and the sealing body that accommodates the laminate are sealed. It is possible to provide a laminate type energy device using a sealing means with improved productivity, adhesion, and space saving, and with high productivity and reliability.

  In addition, according to the laminate type energy device and the manufacturing method thereof according to the first to second embodiments, the sealing means having a compact shape, improved high-frequency characteristics, and high productivity and reliability is used. The laminated energy device can be provided.

[Other embodiments]
As described above, the present invention has been described according to the first to second embodiments. However, it should be understood that the descriptions and drawings constituting a part of this disclosure are exemplary and limit the present invention. should not do. 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 according to the present invention is applicable as a backup power source for LED-Flash modules, communication (high output) modules, solar cell modules, power supply modules, toys and the like. In addition, the laminate type electricity storage 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, 11, 12, 13 ... Active material electrode 18 ... Laminated type electrical storage device 20a, 20b ... Contact hole (joining hole) and tab electrode extraction hole 30 ... Separator 32 (32a, 32b, 33a) ... (aluminum) drawer Electrode 34a, 34b ... (aluminum) Tab electrode 36 (36a, 36b) ... Sealing part (sealant)
37a, 37b ... Joint (welded part)
40 ... (aluminum) laminate sheet 40a ... laminate sheet (front)
40b ... Laminate sheet (rear surface)
41 ... Surface 42 when laminating ... Aluminum foil 43 ... Surface 45 when laminating ... Electrolyte bath 44 ... Electrolytes 44a, 44b ... Hole 46 ... Lamination line (compression line)
48 ... Electrolyte injection port 50 ... Aluminum electrode 51 ... Laminate line 52a, 52b ... (Compressed and spread) Sealing part (sealant)
60 ... Frame members 63, 64 ... Through holes (also serving as electrolyte injection holes)
80 ... Laminated electrode structure 82 ... Resin mold bases 90a, 90b ... Tab common aluminum electrode 100 ... Module substrate 101 ... Punching die base 102 ... Punching blade 104 ... Punching blade 103 ... Cushion (sponge placement part)
110 ... roll 106 ... punching blade 160,170 ... IC
140 ... Transformer 120 ... Other device components 180 ... Laminated power storage device 220a ... Extraction electrode (positive)
220b ... extraction electrode (negative)
240a, 240b ... joints 250a, 250b ... weld hole V ... power supply voltage

Claims (14)

At least two layers laminated so that the positive and negative lead electrodes are exposed and the positive and negative electrodes are alternately exposed while interposing a separator through which only electrolyte ions pass through the positive and negative active material electrodes The above laminate,
Contact holes for spot-bonding laminated energy devices to the module substrate,
The laminate-type energy device is characterized in that the laminate is compression-sealed by laminating a laminate sheet from the front and rear surfaces of the laminate.   2. The laminated energy device according to claim 1, wherein the contact hole also serves as a tab electrode extraction hole for extracting the tab electrode joined to the extraction electrode. Forming an electrolyte inlet when compressing and sealing the laminate sheet from the front and rear surfaces of the laminate,
The laminated laminate is immersed in an electrolytic solution bath containing an electrolytic solution, the electrolytic solution is impregnated into the laminated body from the electrolytic solution injection port, an electrolyte is contained between the laminated active material electrodes, and exposed. The laminate type energy device according to claim 2, wherein energization aging is simultaneously performed from the tab electrodes.   The laminated energy device according to claim 3, wherein the exposed tab electrode is cut after the energization aging. The lead electrode and the tab electrode exposed from the laminate are joined in a sealing portion,
When the laminate sheet is compressed and sealed from the front and back surfaces of the laminate, the tip of the cut tab electrode is covered and insulated by the sealing portion that is compressed and spread simultaneously. The laminate type energy device according to claim 4.   6. The laminate type energy device according to claim 5, wherein the compressed portion of the sealing portion covers the periphery of the tab electrode extraction hole. A positive and negative electrode lead electrode is exposed while a positive and negative electrode active material electrode is interposed in a series of separators through which only electrolyte ions pass, and the positive electrode and the negative electrode are alternated. A laminate of at least two or more layers laminated so that the separators are laminated on the uppermost part and the lowermost part,
In the laminate of the active material electrode and the separator, the separators are punched together, and a joining structure in which fiber structures of the end faces of the separator are entangled and joined to each other at the end faces of the separator, and
The laminated energy device, wherein the separator has a larger area than the active material electrode so as to cover the entire active material electrode.   The laminate type energy device according to claim 7, wherein the separator of the lead electrode portion is outside the punching range.   The active material electrode structure of the active material electrode has a structure in which a plurality of electrode structures are connected in series by a common electrode member, and the series of the active material electrode structures corresponds to the active material electrode structure The laminated energy device according to claim 7, wherein the laminated energy device is alternately laminated with separators.   The laminated energy device according to claim 9, wherein prior to the punching of the separators, a series of stacked extraction electrodes are welded to positive electrodes and negative electrodes.   A portion where the separator is punched and removed after the punching of the separators corresponds to a portion laminated from the front and back by a laminate sheet, and the laminate is laminated by the laminate sheet while being continuous. The laminated energy device according to claim 7.   When laminating with the laminate sheet, the laminate sheet at the bottom of each laminate is not laminated, and an opening is provided as an electrolyte injection port for simultaneously impregnating the electrolyte into each laminate. The laminate type energy device according to claim 11. Welding a tab common electrode for external extraction to each extraction electrode after the punching of the separators;
13. The laminated energy device according to claim 12, wherein when the electrolytic solution is injected from the electrolytic solution injection port, energization aging is performed from the tab common electrode to the plurality of stacked bodies with one energization terminal. . A series of the positive and negative electrode active material electrodes and the positive and negative electrode lead electrodes are respectively formed from a pair of electrode sheets,
The laminate according to claim 7, wherein on each electrode sheet, a portion coated with an active material is used as the active material electrode, and a portion not coated with the active material is used as the lead electrode. Type energy device.

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