584results about "Solid electrolytic capacitors" patented technology

Provided is an electrical storage device that is compact and can be manufactured easily, while allowing for use of higher voltages.　In an electrical storage device 1, a winding structure 20 comprises: a central electrode body 21 in which a first extending part 21b and a second extending part 21c extending from either side of a central portion 21a are wound around the central portion in the same direction; a first electrode body 22 electrically connected to a first external terminal 6 and extending toward an outer peripheral side from a vicinity of the central portion; a second electrode body 23 electrically connected to a second external terminal 7 and extending toward the outer peripheral side from a vicinity of the central portion; a first separator 24 disposed between the central electrode body and the first electrode body; and a second separator 25 disposed between the central electrode body and the second electrode body.

A solid electrolytic capacitor includes: a capacitor element including an anode part and a cathode part; a substrate that supports the capacitor element; a sealing body that seals the capacitor element; a first external electrode electrically connected to the anode part; a second external electrode electrically connected to the cathode part; and an adhesive layer disposed between the capacitor element and a first surface of the substrate. At an interface between the first surface and the adhesive layer, a maximum height Rz1 of surface roughness of the first surface is 5 μm or more, and a maximum height Rz2 of surface roughness of the adhesive layer is 3 μm or more.

This invention discloses a surface-mount solid aluminum electrolytic capacitor and its manufacturing method, comprising a capacitor core package, which includes N capacitor cores, N+1 conductive metal meshes, a substrate, anode leads, cathode leads, and a silver paste covering tape. The capacitor core package is encapsulated and electroplated to form a solid aluminum electrolytic capacitor. The capacitor core includes an anode portion, a cathode portion, and an insulating barrier tape. In this invention, the conductive metal mesh sandwiched between the metal pads in the anode portion of the capacitor core and the cathode portion of the capacitor core can achieve the flatness of the core package. The silver paste covering tape located on the side of the cathode portion of the core package is embedded in the gap formed between two adjacent capacitor cores due to the conductive metal mesh sandwiched, forming an integrated connection. This prevents the resin encapsulant from being squeezed into the core layers during encapsulation, preventing core deformation damage that could lead to increased leakage current and increased ESR. Furthermore, it can prevent insufficient capacitance or even capacitor failure caused by delamination between cores.

An electrolytic capacitor includes a capacitor element that includes an anode part and a cathode part, an exterior body that seals the capacitor element, a first external electrode that is electrically connected to the anode part, and a second external electrode that is electrically connected to the cathode part. At least one of an end face of the anode part or an end face of the cathode part is exposed from the exterior body to be electrically connected to a corresponding one of the first external electrode or the second external electrode. The end face exposed from the exterior body is covered with an electroless Ni plating layer, and the electroless Ni plating layer is covered with an electroless Ag plating layer. The electroless Ag plating layer is covered with the corresponding one of the first external electrode or the second external electrode.

The invention relates to a production process of a high-stability anhydrous aluminum electrolytic capacitor and the capacitor manufactured by the same, and the capacitor is manufactured by the following method: activating electrolytic paper: activating the surface of the electrolytic paper by adopting an activating agent containing a polyethylene glycol derivative, and removing a solvent to obtain activated electrolytic paper; the activated electrolytic paper, the anode foil, the activated electrolytic paper and the cathode foil are sequentially stacked and wound into a columnar core structure, in the process, the aluminum pad leading-out piece is riveted to the two electrode foils, and an element A is obtained; dipping: dipping the element A in the anhydrous electrolyte, so that the element A is fully dipped in the anhydrous electrolyte to obtain an element B; and assembling: assembling the element B, a shell, a sealing plug and an electronic component to obtain the anhydrous aluminum electrolytic capacitor. Through activating treatment, the adsorption efficiency of the element A on the water-free electrolyte is improved, meanwhile, the phenomenon that under the extreme condition, the capacitance is likely to be reduced can be reduced, and the durability of the element A is improved.

A solid electrolytic capacitor includes a laminate in which capacitor elements each including an anode foil, and cathode foils are laminated, an exterior resin covering the laminate and having a first end face on which a part of each anode foil is exposed and a second end face on which a part of each cathode foil is exposed, an anode external electrode electrically connected to each anode foil at the first end face, and a cathode external electrode electrically connected to each cathode foil at the second end face. A first average distance from an end point on the second end face to the respective cathode foils in the lamination direction on the mounting surface side of the exterior resin is smaller than a second average distance from the end point to the respective cathode foils in a region where the capacitor elements and the cathode foils overlap.

A capacitor element that includes: a capacitor unit including an anode plate including a core portion and a porous portion on at least one main surface of the core portion, a dielectric layer on a surface of the porous portion, and a cathode layer that includes a solid electrolyte layer on a surface of the dielectric layer, and the solid electrolyte layer contains a conductive polymer; and a sealing layer covering the capacitor unit, wherein the sealing layer contains a first insulating resin and first flattened inorganic fillers, and the first flattened inorganic fillers are oriented in a surface direction orthogonal to a thickness direction in a portion of the sealing layer that covers the capacitor unit.

A capacitor assembly package structure includes a first bottom electrode structure, a second bottom electrode structure, a capacitor assembly and an insulating package body. The second bottom electrode structure is separate from the first bottom electrode structure. The capacitor assembly is disposed on the first bottom electrode structure and the second bottom electrode structure. The capacitor assembly includes a plurality of capacitor elements electrically connected to each other, and each capacitor element has a positive electrode portion electrically connected to the first bottom electrode structure and a negative electrode portion electrically connected to the second bottom electrode structure. The insulating package body is configured to cover the capacitor elements of the capacitor assembly. Each capacitor element has a raised protruding structure disposed on the positive electrode portion to reduce a shortest vertical distance between the positive electrode portion and the negative electrode portion of each capacitor element.

An electrolytic capacitor including-includes an anode body that is porous, an anode wire including a buried part buried in the anode body and a protrusion part protruding to an outside of the anode body, a dielectric layer disposed on a surface of the anode body, a cathode part covering at least a part of the dielectric layer, an anode terminal electrically connected to the anode wire, and a cathode terminal electrically connected to the cathode part. A corner defined by three sides of the anode body is chamfered by an intersecting surface intersecting each of the three sides, the three sides intersecting each other. The protrusion part is protruded from the intersecting surface and is connected to the anode terminal.

The utility model discloses a core-containing impregnating machine for a solid-state capacitor, the core-containing impregnating machine for the solid-state capacitor comprises an impregnating tank and a sealing cover, the sealing cover comprises a normal sealing cover and an auxiliary sealing cover, the normal sealing cover is arranged on the impregnating tank and covers the impregnating tank, and the auxiliary sealing cover is arranged on one side of the impregnating tank. When the iron bar located in the middle needs to be taken out, the normal sealing cover and the auxiliary sealing cover can completely cover the impregnation tank all the time in the process of moving the normal sealing cover and the auxiliary sealing cover, when the normal sealing cover and the auxiliary sealing cover move to the preset position, the normal sealing cover and the auxiliary sealing cover are far away from each other, a small gap is exposed, and the iron bar is taken out. Then the normal sealing cover and the auxiliary sealing cover are close to each other and abut against each other until the normal sealing cover and the auxiliary sealing cover are closed and completely cover the impregnation tank, and then the normal sealing cover and the auxiliary sealing cover are moved and reset at the same time. When an iron bar located in the middle is taken out, it can still be guaranteed that the area, exposed in the external environment, of the impregnation tank is minimum, and the influence of the external environment on the interior of the impregnation tank is reduced.

To provide an electrolytic capacitor capable of sufficiently maintaining an electrostatic capacitance and an ESR.SOLUTION: An electrolytic capacitor comprises a capacitance element, and an electrolyte liquid. The capacitance element comprises: a positive electrode body having a chemical coating; and a solid electrolyte contacted with the chemical coating. The electrolyte liquid contains a solvent, a polymer component, and a solute. The solvent contains at least one selected from the group consisting of a lactone compound, a glycol compound, and a sulfone compound. A concentration of the polymer component in the electrolyte liquid is 15 mass% or less. The solute contains at least one of benzene-dicarboxylic acid and its derivative as a first acid component, and at least one of an amin and an amidine as a basic component. The concentration of the solute in the electrolyte liquid is 15 mass% or more and 40 mass% or less. A ratio V / Vw of a formation voltage V applied to the positive electrode body for forming the chemical coating and a rating voltage Vw of the electrolytic capacitor is 1.7 or less.SELECTED DRAWING: Figure 1

The present invention provides a solid electrolytic capacitor in which the rise in ESR is suppressed even after thermal stress loading, and a method for manufacturing the same. [Solution] The solid electrolytic capacitor comprises a pair of electrode foils, an electrolyte layer, and a compound having a functional group having pH buffering capacity. The pair of electrodes contain a valve metal, and a dielectric oxide film is formed on the surface of one of the foils. The electrolyte layer is interposed between the pair of electrode foils and contains an electrolyte solution and a conductive polymer. The compound having a functional group having pH buffering capacity adheres to part or all of the electrode foils. The manufacturing method includes an element assembly step of assembling a capacitor element by interposing a pair of electrode foils or further a separator, a compound attachment step of impregnating the capacitor element with a liquid containing a compound having a functional group having pH buffering capacity after the element assembly step, and a conductive polymer attachment step of impregnating the capacitor element with a dispersion of a conductive polymer after the compound attachment step.

To provide a capacitor array having a high degree of freedom in layout, in which a plurality of solid electrolytic capacitor elements are aggregated into a single array.SOLUTION: A capacitor array according to the present invention includes: a plurality of solid electrolytic capacitor elements formed by dividing one solid electrolytic capacitor sheet; a sheet-shaped first sealing layer; and a sheet-shaped second sealing layer. The solid electrolytic capacitor sheet includes: an anode plate made of a valve-action metal; a porous layer provided on at least one main surface of the anode plate; a dielectric layer provided on a surface of the porous layer; and a cathode layer including a solid electrolyte layer provided on a surface of the dielectric layer. The solid electrolytic capacitor sheet has a first main surface and a second main surface facing each other in a thickness direction. The first main surface side of each of the plurality of solid electrolytic capacitor elements is disposed on the first sealing layer. The second sealing layer is disposed so as to cover the plurality of solid electrolytic capacitor elements on the first sealing layer from the second main surface side. The solid electrolytic capacitor elements are partitioned from each other by a slit-shaped sheet removal portion.SELECTED DRAWING: Figure 1

This capacitor is provided with: a porous body that comprises a plurality of pores; and a conductor. The porous body comprises: a conductive base material; a first dielectric layer that is disposed on the base material; and a second dielectric layer that is disposed on the base material. The conductor is disposed on the first dielectric layer and the second dielectric layer. The first dielectric layer is disposed, in the porous body, in a first region that includes a boundary between the porous body and the outside of the porous body. The second dielectric layer is disposed in a second region that is located more inward of the porous body than the first region in the porous body.

An electrolytic capacitor disclosed herein includes: a stacked body of an anode foil having a dielectric layer formed on a surface thereof and a cathode foil; and a layer containing a conductive polymer and an insulating material disposed between the dielectric layer and the cathode foil. The insulating material is at least one kind of material selected from the group consisting of insulating fibers and insulating particles. No separator is disposed between the anode foil and the cathode foil.

The present disclosure provides an organic conductor having excellent moisture resistance, and an electrolytic capacitor using the same. The organic conductor contains a conjugated polymer and a dopant. The dopant contains: a disulfonaphthalic acid compound having a naphthalene ring, two sulfo groups bonded to the naphthalene ring, and two carboxy groups, or an acid anhydride group thereof, bonded to the naphthalene ring; or an acid anhydride of the disulfonaphthalic acid compound.

A method for producing an electrolytic capacitor, the electrolytic capacitor including a capacitor element including an anode body and a cathode body each having a foil shape. The anode body includes a dielectric layer on a surface of the anode body. The method includes a step of forming a capacitor element precursor by winding or stacking a separator, the anode body, and the cathode body with the separator interposed between the anode body and the cathode body, a step of impregnating the capacitor element precursor with a treatment liquid containing a polyhydric alcohol, a solvent, and a conductive polymer component, a step of impregnating the capacitor element precursor with a liquid component after the step of impregnating the capacitor element precursor with the treatment liquid, and a step of forming the capacitor element by eluting the polyhydric alcohol into the liquid component.

A capacitor 1a includes a metallic tantalum 10, an electric conductor 20, and an oxidized tantalum film 30. The oxidized tantalum film 30 is disposed between the metallic tantalum 10 and the electric conductor 20, where the oxidized tantalum film 30 is in contact with the metallic tantalum 10. The oxidized tantalum film 30 includes a first portion 31 containing fluorine, and a second portion 32. The second portion 32 is located closer to the metallic tantalum 10 than the first portion 31 in a thickness direction of the oxidized tantalum film 30. And a fluorine concentration at the second portion 32 is lower than a fluorine concentration at the first portion 31.

The present invention relates to a polymer capacitor comprising an anode, a dielectric layer and a cathode wherein the cathode comprises a solution processed n-type conductive polymer having an electrical conductivity of at least 100 S / cm, preferably at least 500 S / cm.

To provide a solid electrolytic capacitor having high reliability and high productivity by maintaining high airtightness while maintaining excellent electrical characteristics and a manufacturing method of the same.SOLUTION: A solid electrolytic capacitor comprises: a capacitor element 1 which has an anode body 2, a dielectric oxide covering layer 3 covering the anode body 2, and a cathode body 6 formed on the dielectric oxide covering layer 3 so as to be insulated from the anode body 2; an exterior body 10 which covers the capacitor element 1; a contact layer 11 which is formed in an anode terminal part 9 being an end of the anode body 2 and has a surface 11S with prescribed surface roughness; and an anode side electrode layer (12) which covers the surface 11S.SELECTED DRAWING: Figure 2

The application discloses a sheet type laminated solid-state aluminum electrolytic capacitor and a preparation method thereof. The capacitor comprises a core package and a resin shell. The resin shell is packaged outside the core package and forms the solid-state aluminum electrolytic capacitor. The core package comprises a core package prototype, an anode lead frame and a cathode lead frame. The core package prototype comprises arc-shaped cores and metal shafts. A conductive silver paste layer is arranged in a cathode gap between two adjacent arc-shaped cores. The fixed position of the anode part of each core is at the center of the core, which is surrounded by the annular cathode part. Each core cathode part is integrally connected through the conductive silver paste, so that the whole core package presents a disc structure. The core package with the structure is more compact and has no gap. In the packaging process, the organic resin can be prevented from being squeezed into the core layers, the core deformation damage is prevented, the leakage current and ESR increase is prevented, the capacity shortage caused by the delamination between the cores and even the capacitor failure can be further prevented. Meanwhile, the cathode part of the core has a larger area and smaller ESR.

A module is used in a semiconductor composite device that supplies a direct-current voltage adjusted by a voltage regulator including a semiconductor active element to a load. The module includes a capacitor layer including at least one capacitor portion forming a capacitor, a connection terminal used for electrical connection with at least one of the voltage regulator and the load, and a through-hole conductor formed to penetrate the capacitor portion in a thickness direction of the capacitor layer. The capacitor is electrically connected to at least one of the load and the voltage regulator with the through-hole conductor interposed between the load and the voltage regulator.

This electrolytic capacitor comprises a capacitor element and a liquid component. The capacitor element comprises a positive electrode body that has a dielectric layer on a surface thereof, and a conductive polymer component that covers a part of the dielectric layer. The liquid component contains a first solvent, a base component, and an acid component. The first solvent is composed of at least one substance that is selected from the group consisting of polyols and derivatives thereof. The base component contains a first base which has an acid dissociation constant of a conjugate acid of from 5 to 10, while having no boiling point or a boiling point of 100°C or higher.

A method for manufacturing a capacitor member according to the present disclosure includes forming, on a valve metal, a modified layer containing a metal other than the valve metal by a cathodic reaction. In this manufacturing method, εH / KH [V / nm] > εL / KL [V / nm] is satisfied. εH is the dielectric constant of oxide of the metal other than the valve metal. KH [nm / V] is the thickness of the first oxide film of the metal per 1 V of anode potential when the first oxide film is formed by anodic oxidation. εL is the dielectric constant of the oxide of the valve metal. KL [nm / V] is the thickness of the second oxide film including the oxide of the valve metal per 1 V of anode potential when the second oxide film is formed by anodic oxidation.

An electrolytic capacitor for a semiconductor device includes a conductive substrate, a dielectric layer on the conductive substrate, and a conductive polymer layer on the dielectric layer. The conductive polymer layer may include at least one additive. The at least one additive may include an anodizing agent to promote oxide growth of the dielectric layer. The at least one additive may instead or additionally include an organic solvent, an additive to promote hydration resistance of the dielectric layer, and / or an additive to increase conductivity of the conductive polymer layer.

To provide an electric or electronic device having excellent heat resistance and moisture resistance. The electric or electronic device of the present disclosure having a configuration including a first electrode layer, a conductive material layer, and a second electrode layer that are layered in this order, the conductive material layer containing a conductive material having a configuration in which a conjugated macromolecular compound is doped with an anion selected from the group consisting of a nitrogen anion, a boron anion, a phosphorus anion, and an antimony anion. The anion is preferably an anion represented by Formula (a-1) or (a-2).

This invention provides a solid electrolytic capacitor that can achieve high capacitance. [Solution] The solid electrolytic capacitor comprises a capacitor element containing a conductive polymer. The capacitor element comprises an anode, a first dielectric layer containing a first dielectric (excluding a composite oxide of titanium and aluminum) covering at least a portion of the surface of the anode, a second dielectric layer containing a second dielectric covering at least a portion of the surface of the first dielectric layer, and the conductive polymer covering at least a portion of the surface of the second dielectric layer. The second dielectric is an oxide containing at least one element selected from the group consisting of silicon, aluminum, and zinc. The dielectric constant D1 of the first dielectric is higher than the dielectric constant D2 of the second dielectric. The thickness T2 of the second dielectric layer is 0.003T1 or more and 0.170T1 or less with respect to the thickness T1 of the first dielectric layer.

The present application relates to the field of solid-state capacitor, especially to a kind of solid-state capacitor core package automation forming machine.The present application provides a kind of solid-state capacitor core package automation forming machine, which can conveniently load and unload the core package of solid-state capacitor.A kind of solid-state capacitor core package automation forming machine, including workbench, formation pool and water pool etc.;The back side of workbench is fixed with formation pool, the back side of workbench is also fixed with water pool, water pool is in the left side of formation pool, also includes clamping mechanism and moving mechanism, workbench is connected with the clamping mechanism of clamping the core package of solid-state capacitor and the moving mechanism of moving clamping mechanism and core package.The setting of clamping mechanism and moving mechanism can make the staff conveniently clamped and fixed to the core package, and the operation is simple, and it is convenient for staff to use the automation forming machine, improves the convenient usability of the automation forming machine.