JP2003077764A - Multilayer solid electrolytic capacitor and method of manufacturing the same - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To maintain a constant gap of an anode lead-out part in a foil-like capacitor element, and to maintain a stable posture with respect to a resin injection pressure for an exterior at the time of molding of an exterior coating. It is an object of the present invention to provide a small, high-precision solid electrolytic capacitor having a good yield. SOLUTION: A plurality of plate-shaped capacitor elements 1 are stacked, and an anode lead portion 4 of the stacked capacitor elements 1 is electrically connected and mechanically integrated by a conductive elastic body for anode connection via a conductor layer. In addition, the cathode conductor layer portion is electrically connected and mechanically integrated by the cathode metal body 10. A dummy spacer 12 is inserted between the anode lead portions 4 and laminated, and the resin is applied to the resin. After the outer cover 16 is formed in a predetermined shape by the above process, a part of the anode lead-out portion 4 of the anode body is exposed and joined to form an external connection electrode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated solid electrolytic capacitor capable of realizing large capacity and low equivalent series resistance (hereinafter referred to as low ESR) and a method for manufacturing the same.

[0002]

2. Description of the Related Art Recently, electronic devices have become smaller and higher in frequency, and solid electrolytic capacitors using a conductive polymer as a solid electrolyte capable of realizing low impedance at high frequencies have been commercialized. . Since this solid electrolytic capacitor uses a high-conductivity conductive polymer as a solid electrolyte, it has an equivalent series resistance compared to conventional wet electrolytic capacitors using a driving electrolyte solution and solid electrolytic capacitors using manganese dioxide. Various improvements have been made because of the fact that it is possible to realize a small-sized solid electrolytic capacitor having a low component and having a large capacity close to ideal, and it has gradually been accepted by the market.

Further, as the power consumption and speed of a CPU used in a computer have been increased, it has become necessary to provide a capacitor with a high-speed transient response, and to have a large capacity and a low ESR. In order to meet these demands, in order to achieve a large capacity and a low ESR while keeping the occupied area at the time of mounting as small as possible, the technology of stacking flat-plate elements or thin sintered elements has been put into practical use. It was coming.

[0004]

However, in the above-mentioned conventional solid electrolytic capacitor, in order to obtain the capacity required for the backup of the CPU, 5 to 10 large capacity tantalum solid electrolytic capacitors are connected in parallel and mounted. Therefore, the occupying area required for mounting becomes large, and there is a limit to downsizing of the set. Moreover, CPU
The current flowing through the capacitor at high frequency also dramatically increases with the speedup of the
If it is not low (SR), its heat generation will be large and cause capacitor failure. Therefore, it is more and more necessary to provide a large capacity and low ESR capacitor without increasing the mounting area.

As means for solving these problems, a solid electrolytic unit having a structure in which a plurality of flat plate capacitor elements described in JP-A-2000-138138 are laminated by terminal parts and a plurality of these are connected to each other is manufactured. Techniques for forming capacitors have been developed.

However, regarding the structure in which a plurality of flat plate-shaped capacitor elements are laminated, since the capacitor elements are laminated by using the bent terminal parts for the anode lead-out portion which is the electrode lead-out portion, the anode lead-out portion is formed. It is difficult to increase the capacity because the occupied area of the anode becomes large. Therefore, it has been considered to construct the anode lead portion without using the terminal component. However, it is difficult to hold and maintain a constant gap between each flat plate-shaped (foil-shaped) capacitor element without using a terminal component for the anode lead portion. However, there is a problem in that a stable posture cannot be maintained even with respect to the resin injection pressure.

The present invention is intended to solve such a conventional problem, and maintains a constant gap between the anode lead-out portions in a flat plate-shaped (foil-shaped) capacitor element, and at the time of molding the outer covering, It is an object of the present invention to provide a small-sized and high-precision laminated solid electrolytic capacitor which can maintain a stable posture with respect to resin injection pressure for use in production, has a good production yield, and a manufacturing method thereof.

[0008]

In order to achieve the above object, the present invention has the following constitution.

The invention according to claim 1 of the present invention is
An anode body having an anodized film layer to be a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and the solid electrolyte of the cathode body is superposed on the anodized film layer of the anode body. Provided on one end side of the exterior by electrically connecting to the anode body having a plurality of layers of the element laminate, and an exterior covering the element laminate in which the anode body and the cathode body are alternately stacked in plural layers. An anode external electrode, and a cathode external electrode provided on the other end side of the exterior by being electrically connected to the plurality of layers of the cathode body of the element laminated body, and the anode body of the element laminated body and the At least one of the cathode bodies is made of a plate-shaped metal member having an electrode lead-out portion connected to the anode external electrode (or the cathode external electrode), and has a configuration in which a notch is formed in the electrode lead-out portion. , Thereby forming an exterior coating The resin for exterior fit, the can be reliably filled in the cutout of the electrode lead-out portion is a plate-like metal members of the element stack, effect that can secure airtightness by the outer coating is obtained.

The invention according to claim 2 of the present invention is
An anode body having an anodized film layer to be a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and the solid electrolyte of the cathode body is superposed on the anodized film layer of the anode body. Provided on one end side of the exterior by electrically connecting to the anode body having a plurality of layers of the element laminate, and an exterior covering the element laminate in which the anode body and the cathode body are alternately stacked in plural layers. An anode external electrode, and a cathode external electrode provided on the other end side of the exterior electrically connected to the cathode body of the plurality of layers of the element stack, the anode body of the element stack, It is made of a plate-shaped metal member having an electrode lead portion connected to the anode external electrode, has a notch in the electrode lead portion, and contacts the surface of the cathode external electrode with the solid electrolyte of the cathode body. It has a structure in which it is in contact with and electrically connected, Les, the operational effect of the electrical capacitance of the capacitor element can expand the volume of the electrode body to the maximum can be a large capacity can be obtained. In addition, since it can be directly drawn to the outside of electricity, it has a low connection resistance and low E
The effect that the SR capacitor can be obtained is obtained.

The invention according to claim 3 of the present invention is
An anode body having an anodized film layer to be a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and the solid electrolyte of the cathode body is superposed on the anodized film layer of the anode body. Provided on one end side of the exterior by electrically connecting to the anode body having a plurality of layers of the element laminate, and an exterior covering the element laminate in which the anode body and the cathode body are alternately stacked in plural layers. An anode external electrode, and a cathode external electrode electrically connected to the cathode body of the plurality of layers of the element laminate and provided on the other end side of the exterior, the cathode body of the element laminate, It is composed of a plate-shaped metal member having an electrode lead-out portion connected to the cathode external electrode, has a notch in the electrode lead-out portion, and the anode body is made of a plate-shaped metal member, a plurality of the metal The outside of the cathode through a conductor layer that abuts the end face of the member Has a structure electrically connected to the electrode, thereby, operation and effect of the electrical capacitance of the capacitor element can expand the volume of the electrode body to the maximum can be a large capacity can be obtained. In addition, since the electricity can be directly drawn to the outside, there is an effect that a low ESR capacitor having a low connection resistance can be obtained.

The invention according to claim 4 of the present invention is
The anode body is connected to an anode external electrode, and the cathode body is made of a plate-shaped metal member having an electrode lead-out portion connected to the cathode external electrode, and the electrode lead-out portion has a notch. By virtue of this, the function and effect of maximizing the volume of the electrode body and increasing the electric capacity of the capacitor element can be obtained. In addition, since the electricity can be directly drawn to the outside, there is an effect that a low ESR capacitor having a low connection resistance can be obtained.

The invention according to claim 5 of the present invention is
The element stack has a structure according to claim 1, wherein at least two kinds of anode bodies (or cathode bodies) having an electrode lead portion provided with at least one notch are sequentially and alternately stacked. With this, it is possible to reliably fill the cutouts of the electrode lead-out portions of different types of the element laminate with the resin for the exterior for forming the exterior coating, and to ensure the airtightness of the exterior coating. can get.

The invention according to claim 6 of the present invention is
The element stack body has two types of anode bodies (or cathode bodies) having electrode lead-out portions provided with notches at different corners.
And a resin for exterior for forming an exterior coating is provided to the electrode lead-out portion of the element laminated body. It is possible to surely fill the notch in one corner, and to obtain the air-tightness by the exterior coating.

The invention according to claim 7 of the present invention is
An anode body having an anodized film layer to be a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and the solid electrolyte of the cathode body is superposed on the anodized film layer of the anode body. Provided on one end side of the exterior by electrically connecting to the anode body having a plurality of layers of the element laminate, and an exterior covering the element laminate in which the anode body and the cathode body are alternately stacked in plural layers. An anode external electrode, and a cathode external electrode provided on the other end side of the exterior by being electrically connected to the plurality of layers of the cathode body of the element laminated body, and the anode body of the element laminated body and the At least one of the cathode bodies is made of a plate-shaped metal member having an electrode lead-out portion connected to the anode external electrode (or the cathode external electrode), and the electrode lead-out portion is provided with a thin portion. Has
As a result, the gap between the anode bodies (or between the cathode bodies) of the element laminate can be expanded, and the exterior resin for forming the exterior coating can be provided between the electrode lead portions of the element laminate. Can be surely filled and the airtightness can be ensured by the exterior coating.

The invention according to claim 8 of the present invention is
An anode body having an anodized film layer to be a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and the solid electrolyte of the cathode body is superposed on the anodized film layer of the anode body. An exterior covering an element laminate in which a plurality of layers of the anode body and the cathode body are alternately stacked, and electrically connected to a plurality of layers of the anode body of the element laminate and provided on one end side of the exterior In a laminated solid electrolytic capacitor comprising an anode external electrode and a cathode external electrode electrically connected to the cathode bodies of a plurality of layers of the element laminate and provided on the other end side of the exterior package, the anode body and the At least one of the cathode bodies is made of a plate-shaped metal member having an electrode lead-out portion connected to the anode external electrode (or the cathode external electrode), and the electrode lead-out portions are laminated at predetermined intervals. The electrode lead A plurality of layers of the anode body (or the cathode body) made of the metal member are stacked while a spacer is provided therebetween to form an element stack, and the element stack including the space between the electrode lead portions provided with the spacer is made of resin. The outer surface of the metal member is covered with a material to form an outer casing, and the tip of the electrode lead-out portion provided with the spacer is removed to electrically connect the end face of the metal member and the anode external electrode (or the cathode external electrode). It has a connected structure, which allows
The gap between the capacitor element stacks can be maintained constant,
The effect that the stable posture can be maintained against the resin injection pressure for the exterior during molding of the exterior coating is obtained.

The invention according to claim 9 of the present invention is
The spacer has a structure according to claim 8 formed by bending an electrode lead-out portion of a metal member, and this makes it possible, in particular, to dispose a spacer as a separate component at a predetermined position. By bending the lead-out portion of the metal member, the gap between the anode bodies (or between the cathode bodies) of the capacitor element laminate can be kept constant, and the resin for the exterior during molding of the exterior coating can be maintained. The effect that a stable posture can be maintained with respect to the injection pressure is obtained.

According to a tenth aspect of the present invention, in particular, a spacer is provided between the electrode lead portions to form an element laminate in which a plurality of anode bodies (or cathode bodies) are stacked, and then at predetermined intervals. The electrode lead-out portion arranged in a laminated manner is held by a band, and then the element laminated body is covered with a resin material to form an exterior of a predetermined shape. Allows the anode body (or the cathode body) against the resin injection pressure for the exterior during molding of the exterior coating.
It is possible to obtain the effect that the posture of the entire element laminated body in which a plurality of layers are stacked can be stably maintained.

In the invention according to claim 11 of the present invention, in particular, an anode body having an anodized film layer as a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and the anode body An anodized film layer is laminated on the solid electrolyte of the cathode body to cover an element laminate in which a plurality of layers of the anode body and the cathode body are alternately laminated, and a plurality of layers of the element laminate. An anode external electrode that is electrically connected to an anode body and is provided on one end side of the outer package, and a cathode that is electrically connected to the plurality of layers of the cathode body of the element laminate body and is provided on the other end side of the outer package. In a multilayer solid electrolytic capacitor provided with an external electrode, at least one of the anode body and the cathode body is made of a plate-shaped metal member having an electrode lead portion connected to the anode external electrode (or the cathode external electrode). Become the above electrode Part is thinned, then a plurality of layers of the anode body (or the cathode body) made of the metal member are stacked to form an element laminated body, and the element laminated body including the thinned electrode lead portions is made of a resin material. To form an exterior of a predetermined shape, and remove the tip of the electrode lead portion to electrically connect the end surface of the metal member to the anode external electrode (or the cathode external electrode). With this, by crushing the uneven portion formed by the etching treatment by thinning processing, with respect to the etched portion forming the dielectric of the electrode lead portion, the surface state is flat. In addition, the resin for the exterior can be filled without forming a space around the electrode lead portion at the time of molding the exterior coating, and the airtightness of the resin can be secured. Furthermore, the gap between the stacked layers can be expanded by thinning, and the electrode lead-out portions of the element stacked body (particularly between the anode bodies or between the cathode bodies) can be reliably filled, and airtightness is ensured by the exterior coating. The effect of being able to do is obtained. Further, the thinning process has a working effect that the metal member of the electrode lead-out portion is work-hardened and a stable posture can be maintained against the resin injection pressure for the exterior during molding of the exterior coating.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) In the following, Embodiment 1 will be used to explain the invention particularly described in claims 8 and 10.

FIGS. 1 (a) and 1 (b) are cross-sectional structural views of a main part of a solid electrolytic capacitor according to an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view showing the same flat plate capacitor element, and FIG. FIG. 6 is a perspective view of a partial structure of the same element laminated body, FIG. 4 is a perspective view of a partial structure of the anode lead-out portion in a stack, and FIG. FIG. 7 is a perspective view of a main portion of a cut surface of an anode lead-out portion provided with a resin for the exterior, FIG. 7 is a partial sectional view of a main portion of the anode portion, and FIG. .

First, a purity of 9 which is a metal material for the electrode body
After roughening or expanding the foil surface of 9.99% aluminum foil by electrolytic etching, which is a known method,
A voltage of 13 V is applied in a 3% aqueous solution of ammonium adipate to perform conversion for 30 minutes to form a conversion film of aluminum oxide as a dielectric.

The electrode body to be an anode body produced in this manner is cut into, for example, a width of 3.5 mm and a length of 6.5 mm, and the polyimide adhesive tape 2 is placed at a predetermined position as shown in FIG. Then, the element portion 3 and the anode lead-out portion 4 serving as an electrode lead-out portion are attached to separate the cross-section portion generated by the above cutting, and a voltage of 13 V is applied again in a 3% ammonium adipate aqueous solution, After forming the cross section for 30 minutes, an aqueous solution of manganese nitrate is dipped in the element portion 3 and thermally decomposed at 300 ° C. to form a conductive manganese oxide layer.

Further, it is immersed in an aqueous solution containing 0.1 mol of pyrrole and 0.15 mol of alkylnaphthalene sulfonate, and the working electrode is brought into contact with a part of the manganese oxide, and a constant voltage of 2 V is applied for 30 minutes. Electrolytic polymerization is performed to uniformly deposit the conductive polymer layer 5 of polypyrrole serving as a solid electrolyte.

The element portion 3 of the capacitor element substrate 1a, which is an electrode body (anode body) made of the metal material produced as described above.
Then, a cathode body composed of the carbon paint layer 6 and the silver paint layer 7 which is a cathode conductor layer is formed to form the flat capacitor element 1.

Next, as shown in FIGS. 1 and 3, a predetermined number (for example, 5 to 20) of the flat plate-shaped capacitor elements 1 are formed.
(For example, epoxy adhesive 11 is applied to a portion where the element portions 3 are overlapped and joined by a laminating jig, a laminating machine or the like (not shown), and then the anode lead-out portions 4 are overlapped with each other. Are aligned, and the respective element portions 3 are stacked and laminated.

Then, the adhesive 11 is cured to join (integrate) the capacitor elements 1 to form the element laminated body 8.

Then, silver is applied to the central portion or the tip portion side of the silver paint layer 7 which is the cathode body in the element laminated body 8.
The fixing band 9 is made of a metal material such as a conductor material of copper, iron or an alloy thereof and wound around a conductive elastic body 11a for cathode connection made of gold, copper or silver paint, and the lower surface of the fixing band 9 is plate-shaped. Each of the silver paint layers 7 (cathode bodies) in the capacitor element 1 is bonded to the cathode metal body 10 forming the external connection terminal portion with a metal material made of a conductor material such as silver, copper, iron or alloys thereof. Electrically connected and mechanically integrated.

Subsequently, as shown in FIGS. 1, 4 and 5, an insulating material or a conductive material is provided between the respective layers of the anode lead-out portions 4 of a predetermined number of flat plate capacitor elements 1 forming the element stack 8. Dummy spacers 12 made of a sheet material are bonded and aligned by an adhesive or a welding method to be laminated.

Then, the laminated portion is wound by a fixed holding band 13 which serves as a band of an electrode lead-out portion, and a lower portion of the fixed holding band 13 is joined to a part of a molding comb 14 to hold it at a predetermined position. The element stacking unit 15 is completed.

Next, as shown in FIG. 1, for example, the cathode metal body 10 is formed by using a resin for exterior packaging such as polyimide or epoxy material containing at least 70% by weight of an inorganic filler.
The outer coating 16 is formed so that the element laminated unit 15 excluding the external connection terminal portion and one end of the molding comb 14 in FIG.

Thereafter, as shown in FIGS. 1 and 6, the right end portion of the element lamination unit 15, that is, the anode lead-out portion 4 without the dummy spacer 12 is mechanically cut to expose the end face of the anode lead-out portion 4. The cut surface 17 is formed.

Subsequently, as shown in FIGS. 1 and 7, in order to ensure electrical connection between the respective end surfaces of the anode lead-out portion 4 and metal-to-metal bonding to be carried out in the next step and to reduce the contact resistance, the cut surface is cut. 17 includes a conductor layer 18, a plated layer 19 made of copper or nickel, a conductive resin coating which is a conductive elastic body for anode connection also serving as an adhesive, and a metal material such as gold, silver or copper. It is formed by the paint layer 20 and the like.

Next, a metal electrode 21 for external anode connection, which is an external electrode for an anode, made of a metal material made of a conductor material of copper, iron, nickel or an alloy thereof is attached to the end portion where the conductor layer 18 is formed, and heating or The conductor layer 18 is cured by irradiation with ultraviolet rays or the like, and the metal electrode 21 for anode external connection is fixedly formed at the end portion of the anode body of the element lamination unit 15 to be electrically connected and mechanically integrated.

Then, as shown in FIGS. 1 and 8, a solid electrolytic capacitor 23 is formed by bending the external connection terminal portion of the cathode metal body 10 to form a cathode external connection metal electrode 22 which becomes a cathode external electrode. Form.

Next, using the metal electrode 22 for external connection of the cathode of the solid electrolytic capacitor 23 as a cathode and the metal electrode 21 for external connection of the anode as an anode, after aging for a predetermined voltage and for a predetermined time in a predetermined atmosphere, for example, a rating of 6 is given. .3V, 3
The solid electrolytic capacitor, which is a product of 75 μF, is completed.

In place of the cathode external connection metal electrode 22 formed by bending a part of the cathode metal body 10, copper, iron,
A metal electrode made of a conductor material of nickel or an alloy thereof and having the same metal electrode 21 as the cathode external connection as the anode external connection metal electrode 21 is attached to the end portion where the cathode metal body 10 is formed via the same conductor layer 18 as the anode. However, the conductor layer 18 may be cured by heating, irradiation with ultraviolet rays, or the like to be electrically connected and mechanically integrated.

In the first embodiment, an example in which aluminum (foil) is used as the material of the metal electrode body, that is, the capacitor element substrate 1a has been described, but a metal material having a valve action, for example, tantalum is used. It may be a tantalum foil or a niobium foil on which a powder sintered body is formed.

Furthermore, in the first embodiment, an example in which the capacitor elements 1 to be laminated are manufactured one by one has been described. However, after a plurality of connected or continuous capacitor elements 1 are laminated at the same time, they are individually laminated. The method may be divided into the capacitor element 1 or the element laminated body 8, or the cathode metal body 10 may be continuously produced as a lead frame structure.

(Second Embodiment) Next, a second embodiment of the present invention will be described, particularly the inventions described in claims 1, 2, 3, 4, 5, and 6. FIG. 9 shows the second embodiment of the present invention.
FIG. 10 is a partially cutaway perspective view showing a flat plate-shaped capacitor element in FIG. 10, FIG. 10 is a partial perspective view illustrating the same laminated structure, and FIG.

As shown in FIG. 9, a part of the anode lead-out portion 4 in the capacitor element 1 is cut to, for example, ½ of the width dimension.
A notch portion 26 is provided which becomes a notch by cutting about 2/3. That is, the anode lead portion 4 has a shape having the convex portion 27 that does not come into contact with the solid electrolyte.

Then, the cutout portions 26 and the convex portions 27 are laminated so that the positions thereof are alternately arranged as shown in FIG. 10 to form the element laminated body 8 described above, and fixed as shown in FIG. The band 9 is wound around a conductive elastic body 11a for cathode connection and the like, and is joined to a plate-shaped cathode metal body 10 which also forms an external connection terminal portion on the lower surface of the fixed band 9, and silver paint for the capacitor element 1 is formed. Electrically connecting each of the layers 7,
And mechanically integrate.

After that, the solid electrolytic capacitor 23 is completed by the same method as in the first embodiment, and the lamination interval in the thickness direction of the anode lead portion 4 is expanded by one layer of aluminum foil, and the resin for the exterior is applied. It is possible to reliably fill the interlayer of the anode lead portion 4 with a low pressure, and it is possible to prevent deformation and exposure of the laminated flat plate-shaped capacitor element 1 due to the injection pressure of the resin for exterior. is there.

The notch 26 may be provided in plural instead of one place, that is, two or more convex portions 27 may be provided, and the convex portions 27 may be alternately laminated so that they do not overlap each other.

Further, although the processed shape of the anode lead-out portion 4 in the anode body has been described above, the cathode body also has a shape having one or a plurality of convex portions which do not come into contact with the solid electrolyte, and so on. A solid electrolytic capacitor may be formed according to the structure and method.

(Third Embodiment) Next, the invention according to claim 9 of the present invention will be described with reference to the third embodiment. FIG. 12 is a partial perspective view for explaining the folding process of the anode lead portion in the third embodiment of the present invention.

That is, as shown in FIG. 12, the folded-back portion 24 formed by bending a part (tip) of the anode lead-out portion 4 in the capacitor element 1 and folding it back into close contact with each other has been described in the first embodiment. Since the dummy spacers 12 are used in place of the dummy spacers 12, it is not necessary to separately insert and stack the dummy spacers 12, and the element stacking unit can be formed with a simple configuration and process.

(Fourth Embodiment) Next, the invention according to claims 7 and 11 of the present invention will be described with reference to the fourth embodiment. FIG. 13 is a laminated partial cross-sectional view of a pressed anode lead portion in Embodiment 4 of the present invention.

That is, the compression part 25 is formed by compressing (thinning) the thickness of the tip or center part of the anode lead-out part 4 of the capacitor element 1 to about 2/3 to 1/2 of the original thickness by press working. Therefore, in the element stacking unit 15, the gap between the stacked layers of the anode lead portion 4 is widened, and the resin for exterior can be reliably filled between the layers of the anode lead portion 4.

[0050]

As described above, according to the solid electrolytic capacitor of the present invention, the gap between the anode lead portions of the flat plate capacitor element can be kept constant in the production process, and the outer cover at the time of forming the outer cover. It is possible to maintain a stable posture against the resin injection pressure for
This has the effect of realizing a compact and highly accurate solid electrolytic capacitor with a good production yield.

[Brief description of drawings]

FIG. 1 is a cross-sectional structural view of a main part of a solid electrolytic capacitor according to an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view showing the flat plate-shaped capacitor element.

FIG. 3 is a perspective view showing a main configuration of the element stack body.

FIG. 4 is a partial configuration perspective view of a laminated structure of the anode lead-out portion.

FIG. 5 is a partial configuration perspective view of a stack of anode lead portions provided with the same fixed holding band.

FIG. 6 is a perspective view showing a configuration of a main part of a cut surface of an anode lead-out portion provided with a resin for the exterior.

FIG. 7 is a partial cross-sectional view of a main part of the anode part.

FIG. 8 is a perspective view of a main part of the solid electrolytic capacitor.

FIG. 9 is a partially cutaway perspective view showing a flat plate-shaped capacitor element according to Embodiment 2 of the present invention.

FIG. 10 is a partial perspective view illustrating the same laminated structure.

FIG. 11 is a cross-sectional structural view of the main parts of the solid electrolytic capacitor.

FIG. 12 is a partial perspective view illustrating a folding process of an anode lead portion according to a third embodiment of the present invention.

FIG. 13 is a partial cross-sectional view of a laminated portion of a pressed anode lead portion according to the fourth embodiment of the present invention.

[Explanation of symbols]

1 Capacitor element 1a Capacitor element base material 2 Polyimide adhesive tape 3 element parts 4 Anode drawer 5 Conductive polymer layer 6 Carbon paint layer 7 Silver paint layer 8 element stack 9 fixed band 10 Cathode metal body 11 adhesive 11a Conductive elastic body for connecting cathode (silver paint) 12 spacers 13 Fixed holding band 14 Com 15 element stacking unit 16 Exterior coating 17 cut surface 18 Conductor layer 19 Plating layer 20 paint layer 21 Metal electrode for external connection of anode 22 Metal electrode for external connection of cathode 23 Solid Electrolytic Capacitor 24 Folding part 25 Compressor 26 Notch 27 Convex part

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H01G 9/04 328 9/05 G (72) Inventor Tsutomu Aisaka 1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Within the corporation

Claims (11)

[Claims] 1. An anode body having an anodized film layer as a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and a solid body of the cathode body in the anodized film layer of the anode body. An exterior that covers an element stack in which a plurality of layers of the anode body and the cathode body are alternately stacked by stacking an electrolyte, and the exterior that is electrically connected to the plurality of layers of the anode body of the element stack. An anode external electrode provided on one end side of the element laminated body, and a cathode external electrode provided on the other end side of the exterior by being electrically connected to the plurality of layers of the cathode body of the element laminated body, At least one of the anode body and the cathode body is made of a plate-shaped metal member having an electrode lead portion connected to the anode external electrode (or the cathode external electrode), and the electrode lead portion has a notch. Stacked solid electrolytic condensate characterized by Sa. 2. An anode body having an anodized film layer as a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and a solid body of the cathode body in the anodized film layer of the anode body. An exterior that covers an element stack in which a plurality of layers of the anode body and the cathode body are alternately stacked by stacking an electrolyte, and the exterior that is electrically connected to the plurality of layers of the anode body of the element stack. An anode external electrode provided on one end side of the element laminated body, and a cathode external electrode provided on the other end side of the exterior by being electrically connected to the plurality of layers of the cathode body of the element laminated body, The anode body is composed of a plate-shaped metal member having an electrode lead-out portion connected to the anode external electrode, has a notch in the electrode lead-out portion, and the surface of the cathode external electrode, A configuration in which the solid electrolyte is brought into contact with and electrically connected to Eggplant laminated solid electrolytic capacitor. 3. An anode body having an anodized film layer as a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and a solid body of the cathode body in the anodized film layer of the anode body. An exterior that covers an element stack in which a plurality of layers of the anode body and the cathode body are alternately stacked by stacking an electrolyte, and the exterior that is electrically connected to the plurality of layers of the anode body of the element stack. An anode external electrode provided on one end side of the element laminated body, and a cathode external electrode provided on the other end side of the exterior by being electrically connected to the plurality of layers of the cathode body of the element laminated body, The cathode body is made of a plate-shaped metal member having an electrode lead-out portion connected to the cathode external electrode, has a notch in the electrode lead-out portion, and the anode body is made of a plate-shaped metal member. , Through a conductor layer that abuts the end faces of the plurality of metal members A laminated solid electrolytic capacitor electrically connected to the cathode external electrode. 4. The anode body is connected to an anode external electrode, and the cathode body is made of a plate-shaped metal member having an electrode lead-out portion connected to the cathode external electrode, and the electrode lead-out portion has a notch. 1. The laminated solid electrolytic capacitor as described in 1. 5. The laminated body according to claim 1, wherein the element laminated body has a structure in which at least two kinds of anode bodies (or cathode bodies) having an electrode lead portion provided with at least one notch are laminated alternately in sequence. Type solid electrolytic capacitor. 6. The laminated body according to claim 1, wherein the element laminated body has a structure in which two kinds of anode bodies (or cathode bodies) having electrode lead-out portions with notches provided at different corners are alternately laminated in sequence. Type solid electrolytic capacitor. 7. An anode body having an anodized film layer as a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and a solid body of the cathode body in the anodized film layer of the anode body. An exterior that covers an element stack in which a plurality of layers of the anode body and the cathode body are alternately stacked by stacking an electrolyte, and the exterior that is electrically connected to the plurality of layers of the anode body of the element stack. An anode external electrode provided on one end side of the element laminated body, and a cathode external electrode provided on the other end side of the exterior by being electrically connected to the plurality of layers of the cathode body of the element laminated body, At least one of the anode body and the cathode body is made of a plate-shaped metal member having an electrode lead-out portion connected to the anode external electrode (or the cathode external electrode), and a thin-walled portion is provided in the electrode lead-out portion. Stacked solid electrolytic condensate characterized by Sa. 8. An anode body having an anodized film layer as a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and a solid electrolyte of the cathode body in the anodized film layer of the anode body. And an exterior covering the element stack in which the anode body and the cathode body are alternately laminated in a plurality of layers, and the exterior of the exterior by being electrically connected to the anode bodies of the plurality of layers of the element stack. In a laminated solid electrolytic capacitor provided with an anode external electrode provided on one end side and a cathode external electrode provided on the other end side of the exterior by being electrically connected to the cathode bodies of a plurality of layers of the element laminate. At least one of the anode body and the cathode body is made of a plate-shaped metal member having an electrode lead-out portion connected to the anode external electrode (or the cathode external electrode), and the electrode lead-out portions are laminated at predetermined intervals. As stated above A plurality of layers of the anode body (or the cathode body) made of the metal member are stacked while a spacer is provided between the electrode lead portions to form an element stack, and the element stack including the space between the electrode lead portions provided with the spacers. The body is covered with a resin material to form an exterior of a predetermined shape, and the tip of the electrode lead-out portion provided with the spacer is removed to separate the end surface of the metal member and the anode external electrode (or the cathode external electrode). A method for manufacturing a laminated solid electrolytic capacitor which is configured by being electrically connected. 9. The method for manufacturing a laminated solid electrolytic capacitor according to claim 8, wherein the spacer is formed by bending an electrode lead portion of a metal member. 10. A spacer is provided between the electrode lead-out portions to form an element laminate in which a plurality of anode bodies (or cathode bodies) are stacked, and then the electrode lead-out portions arranged at predetermined intervals are held by a band. 9. Then, the method for producing a laminated solid electrolytic capacitor according to claim 8, wherein the element laminated body is covered with a resin material to form an exterior of a predetermined shape. 11. An anode body having an anodized film layer as a dielectric, a cathode body having a solid electrolyte containing a conductive polymer, and the solid electrolyte of the cathode body in the anodized film layer of the anode body. And an exterior covering the element stack in which the anode body and the cathode body are alternately laminated in a plurality of layers, and the exterior of the exterior by being electrically connected to the anode bodies of the plurality of layers of the element stack. In a laminated solid electrolytic capacitor provided with an anode external electrode provided on one end side and a cathode external electrode provided on the other end side of the exterior by being electrically connected to the cathode bodies of a plurality of layers of the element laminate. , At least one of the anode body and the cathode body is made of a plate-shaped metal member having an electrode lead-out portion connected to the anode external electrode (or the cathode external electrode), after thinning the electrode lead-out portion, From the metal member A plurality of layers of the anode body (or the cathode body) are laminated to form an element laminated body, and the element laminated body including the thin-walled electrode lead-out portions is covered with a resin material to form an exterior of a predetermined shape. A method for manufacturing a laminated solid electrolytic capacitor, which is configured by removing an end of the electrode lead portion and electrically connecting an end surface of the metal member and the anode external electrode (or the cathode external electrode).