304results about "Liquid electrolytic capacitors" patented technology

The invention relates to the technical field of flash fire lifting agents, and discloses a flash fire lifting agent of an electrolyte of a boron-free aluminum electrolytic capacitor and a preparation method of the flash fire lifting agent, and the flash fire lifting agent comprises the following components in percentage by mass: 10-30% of organic ammonium carboxylate; 5%-15% of a nitro compound; 3%-10% of a phosphate ester compound; 2%-8% of a polyethylene glycol derivative; 0.5%-3% of organic siloxane; and the balance of deionized water. Through the synergistic effect of the organic ammonium carboxylate, the nitro compound, the phosphate ester substance and the organosiloxane in a specific proportion, the sparking voltage of the electrolyte is remarkably improved, and the negative effects of boron elements on the environment and the performance of a capacitor are avoided; a nitro compound is used as an electron acceptor to inhibit hydrogen precipitation, and cooperates with phosphate to fill oxide film micropores and block current concentration; the organic siloxane forms a hydrophobic barrier on an electrode interface, electrolyte decomposition is delayed, the organic carboxylic acid ammonium salt accurately controls the free acid concentration, and the conductivity rise caused by hydrogen ion migration is avoided.

A capacitor element structure, a capacitor assembly packaging structure and an electronic device. The capacitor assembly packaging structure includes a capacitor assembly, an insulating package body and an electrode assembly. The capacitor assembly includes a plurality of capacitor element structures stacked in sequence and electrically connected to each other. The insulating package body is configured to encapsulate the capacitor element structures. The electrode assembly includes a first electrode structure and a second electrode structure that are configured to cooperate with the insulating package body and electrically connected to the capacitor element structure. Each of the capacitor element structures includes an oxide layer, the oxide layer has a plurality of micro recessed spaces that are irregularly concaved and arranged, and each of the micro recessed spaces is partially filled with an electrolyte substance.

A capacitor includes a capacitive element arranged in a housing, wherein in or on the housing a gas dissipation element is arranged and / or wherein the capacitor has an electrolyte that comprises an organic acid having a pka of 4.1 or higher and / or wherein the capacitor has an OMS of 20% or higher.

The invention belongs to the technical field of aluminum electrolytic capacitors, and particularly discloses an aluminum electrolytic capacitor for a new energy automobile, which comprises an aluminum capacitor shell, a support ring is fixed at the bottom of the aluminum capacitor shell close to the edge of the outer surface, a sealing cover plate is arranged between the inner walls of the support ring, and a cylindrical cavity is formed in the sealing cover plate; according to the invention, through the drainage assembly, when high pressure is generated in the aluminum capacitor shell, corrosive liquid in the aluminum capacitor shell can be led out to a neutralizing solution to be neutralized and then discharged, meanwhile, the high pressure is released, explosion and combustion are avoided, meanwhile, the electric lap joint assembly is triggered to cut off the electric connection part of the pin, and the alarm lamp is triggered to give an alarm; the position of a fault capacitor can be rapidly determined subsequently for maintenance and overhaul, the feedback protection assembly can be triggered to position the aluminum capacitor shell while the electrical connection part of the pin is cut off, and the aluminum capacitor shell is prevented from inclining and falling off due to instability caused by expansion.

An electrolytic capacitor that can suppress the total amount of gas generated inside the electrolytic capacitor is provided. The electrolytic capacitor includes anode foil, a cathode body, and electrolytic solution. Dielectric oxide film is formed on the anode foil. The cathode body has a reduction site on a surface thereof. The cathode body includes cathode foil formed of valve metal and a carbon layer laminated on the cathode foil, and the carbon layer becomes the reduction site. The electrolytic solution intervenes between the anode foil and the cathode body, and contains nitro compound. The nitro compound is contained in the electrolytic solution at a rate of 1.5 mg or less per 1 cm2 of the projected area of the cathode body.

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

To provide a rechargeable battery suitable for personal digital assistants or wearable devices. , novel electronic devices having various external shapes, and secondary shapes suitable for those shapes We provide batteries. [Solution] The film has recesses or protrusions that relieve the stress generated when an external force is applied. The secondary battery is sealed using a film. The film is press-formed, for example, E The embossing process creates a pattern composed of recessed or raised areas.

A composition for an electrolytic capacitor and an electrolytic capacitor including the composition is provided. The composition includes an intrinsically conductive polymer and an electrolyte solution. The electrolyte solution includes an organic solvent, an ionic salt compound and a succinimide-based compound.

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.

Electrodes, electrolytes, capacitive elements, capacitors, and methods of making or modifying or impregnating electrodes.SOLUTION: According to the present application, an electrode is provided having a substrate and a sintered body on a first major surface of the substrate. The substrate includes a first valve metal. The sintered body comprises fused or sintered particles comprising a second valve metal. The first major surface of the substrate is surface modified.SELECTED DRAWING: Figure 2

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.

This application relates to the field of electronic component technology, specifically to a novel rare-earth capacitor and its preparation method. The novel rare-earth capacitor provided by this application includes: an anode, a cathode, and a rare-earth electrolyte. The anode is an aluminum substrate plated with titanium. The rare-earth electrolyte includes: an organic solvent, an electrolyte salt, and rare-earth electrolyte additives. The organic solvent includes: a mixture of ethylene glycol (EG) and gluconate (GBL). The electrolyte salt includes: ammonium phthalate and imidazole salt. The cathode is titanium foil. This application can meet the stringent low-temperature environment requirements of -40℃ and possesses extremely high resistance to blast impact and vibration. Even in extreme conditions where the distance between adjacent detonators is only 0.3–0.5 meters and there is a millisecond-level delay in detonation, it can still ensure that the electronic detonator is not affected by the preceding explosion. This product can replace existing imported tantalum capacitors, achieving domestic supply chain integration and effectively reducing costs.

The invention relates to the technical field of aluminum electrolytic capacitor processing, and discloses a branched-chain carboxylate composite high-temperature-resistant aluminum electrolytic capacitor electrolyte and a preparation method thereof. Branched-chain carboxylate ammonium salt with a specific steric hindrance structure is used as a composite main solute; the steric hindrance effect brought by the branched chain structure greatly enhances the thermal stability of carboxylate anions and ammonium ions at a high temperature, the upper limit of the working temperature of the aluminum electrolytic capacitor can be stably increased to 135 DEG C or above, and the branched chain carboxylate can still keep high dissociation degree and ion mobility at a high temperature. The high-temperature ESR of the capacitor can be remarkably reduced by combining the optimally selected high-boiling-point and medium-viscosity solvent combination, the dynamic repair of the aluminum oxide dielectric layer on the surface of the anode foil can be promoted by adding the efficient film forming accelerant, the leakage current of the capacitor at the high temperature is greatly reduced, all the additives play a complementary role around the main solute, and the service life of the capacitor is prolonged. And an efficient and stable high-temperature-resistant electrolyte system is jointly constructed.

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.

To provide electrolytic capacitors that offer greater flexibility in selecting the material of the capacitor element while also improving sound quality when used in audio equipment. [Solution] The electrolytic capacitor 1 comprises a capacitor element 2, a bottomed cylindrical outer case 3 that houses the capacitor element 2 impregnated with electrolyte, and a sealing body 4 that seals the opening of the outer case 3, wherein an electrically insulating sheet 5 mainly composed of wool fibers is placed between the inner surface 3a of the outer case 3 and the capacitor element 2.

This electrolytic capacitor includes a capacitor element and a liquid component. The capacitor element includes a conductive component. The conductive component includes a conductive polymer. The liquid component includes a solvent, a base component, a first acid component, and a second acid component. The total mass content of the base component, the first acid component, and the second acid component in the liquid component is 3% to 15% inclusive. The base dissociation constant pKb of the base component is more than 4.75 and equal to or less than 7.00. The first acid component has a first aromatic ring and two or more first carboxyl groups that are bonded to the first aromatic ring. The second acid component has a second aromatic ring, and a second carboxyl group and a hydroxyl group which are bonded to the second aromatic ring. The mass content Ma1 of the first acid component, the mass content Ma2 of the second acid component, and the mass content Mb of the base component in the liquid component satisfy the following relational expressions. 1.5 ≤ (Ma1 + Ma2) / Mb ≤ 3.0 0.8 ≤ Ma1 / Ma2 ≤ 6.0

The disclosed power storage device is equipped with a power storage element 11, a bottomed cylindrical case 20 that accommodates the power storage element 11 and that has an opening 21 at one end, and a sealing body 30 that seals the opening 21. The case 20 is provided with: a first pressing part 22 in the vicinity of the opening 21, the first pressing part 22 pressing the side surface of the sealing body 30 and projecting toward the inner side of the case 20; and gas release parts 24, 26 provided nearer to one end side of the case 20 than the farthest-projecting apex 22a of the first pressing part 22. This makes it possible to provide a power storage device comprising an explosion-preventing mechanism which has high operating reliability and in which air-tightness is not impaired.

To provide an electrolytic capacitor for suppressing the rise of an ESR even in a high temperature environment.SOLUTION: An electrolytic capacitor includes an anode foil, a cathode body, a separator, and a solid electrolyte layer. The anode foil is made of valve metal and has a dielectric oxide film formed on a foil surface. The cathode body has a cathode foil of valve metal and a carbon layer laminated on the cathode foil. The solid electrolyte layer contains a conductive polymer held in the separator and doped with an acid component. The separator contains a fiber having hydroxyl group, intermolecularly bonded by 1,4-glycosidic bond, and alkali-treated.SELECTED DRAWING: Figure 1

A solid electrolytic capacitor with low ESR even when a conductive layer is formed on cathode foil, and the manufacturing method thereof are provided. The solid electrolytic capacitor includes an anode body having dielectric film, a cathode body, and an electrolyte layer intervening between the anode body and the cathode body. The cathode body includes cathode foil formed of valve action metal and a conductive layer formed a on the cathode foil. The electrolyte layer includes a conductive polymer and contacts at least the conductive layer. The foil capacity of the cathode foil is 20 µF / cm2 or more.

A capacitor and an electronic device comprising same are disclosed. An electronic device according to the present disclosure may comprise: a substrate; a plurality of capacitors mounted on the substrate, each of the plurality of capacitors including a case extending to accommodate an electrolyte therein, and a cap coupled to one end of the case in the direction in which the case extends configured to restrict scattering of the electrolyte; and a fixing member comprising a protrusion and configured to press the perimeters of the caps in the radial direction of the caps to fix the plurality of capacitors to the substrate.

A capacitor may include a stack assembly that may include a plurality of anode plate members, each having an embedded wire. The anode plate members may be separated by at least one cathode foil sandwiched between separator sheets. A conducting member may electrically connect the embedded wires and may have an externally accessible end portion that is hermetically sealed from the interior of the capacitor. A case covers the stack assembly and may be attached to a cover. The case and cover may enclose the stack assembly within an interior area of the capacitor. The at least one cathode foil may be connected to the case. An electrolyte fluid may be disposed within the interior area. A passage may be provided through a central portion of the stack assembly. A tube, surrounded by insulation, may pass through the passage and may be connected to the cover and the case.

The present disclosure provides a core package, an aluminum electrolytic capacitor and a packaging method thereof. The core package includes a plurality of first electrode foils and second electrode foils laminated one on another, each of the first electrode foils is an anode foil or a cathode foil, and the second electrode foil is the other. Among the plurality of first electrode foils, a first conductive foil is arranged at the edge of each of the first electrode foils, a first portion of the first conductive foil is electrically coupled to the corresponding first electrode foil, and a second portion of the first conductive foil extends and protrudes relative to the corresponding first electrode foil; and the plurality of first conductive foils are connected to a first conductive foil strip through the second portion; and an oxide film is formed on a surface of the first conductive foil.

The utility model discloses a pressurized impregnation device for an aluminum electrolytic capacitor, belongs to the technical field of pressurized impregnation, and aims to solve the problems that in the prior art, when the capacitor is impregnated, the capacitor is stacked in a screen frame and then descends into electrolyte in a box body to be impregnated, so that the operation is inconvenient and the like. Therefore, the innermost capacitor in the stacked capacitors is less in contact with the electrolyte than the outer capacitor, so that the impregnation efficiency of the innermost capacitor is lower than that of the outer capacitor, and the impregnation efficiency of the capacitors in the same screen frame is not uniform. Comprising an electrolytic tank, supporting rods are fixedly connected to the four corners of the upper side of the electrolytic tank, a top plate is fixedly connected to the upper ends of the supporting rods, impregnation mechanisms are arranged at the inner end and the outer end of the electrolytic tank, and each impregnation mechanism comprises a hydraulic cylinder installed in the middle of the upper side of the top plate; the right end of the lower side of the cover plate is fixedly connected with a connecting plate.

An electrolytic capacitor according to the present invention comprises a capacitor element and a liquid component impregnated in the capacitor element. The capacitor element includes: an anode foil provided with a dielectric layer; a cathode foil; a wound body obtained by winding a separator interposed between the anode foil and the cathode foil; a first electroconductive polymer layer formed on the separator; and a winding stop tape for fixing a winding end portion of the wound body. The coating amount of the first electroconductive polymer layer on the separator is 0.04 mg / cm2 or more. A lactone compound is present in the liquid component in a proportion of 40 mass% or less.

A method of manufacturing an electrolytic capacitor includes impregnating an electrolytic capacitor with a first electrolyte to form a first impregnated capacitor, aging the first impregnated capacitor using a first aging process to form a first aged capacitor, impregnating the first aged capacitor with a second electrolyte to form a second impregnated capacitor, and aging the second impregnated capacitor using a final aging process to form a final aged capacitor.

An electrolytic capacitor includes a capacitor element including anode and cathode foils wound together with a separator being interposed between the anode and cathode foils, a case that houses the capacitor element, a sealing body with which an opening of the case is sealed, and a holding member interposed between the capacitor element and the sealing body, the holding member holding an antioxidant that is more easily oxidized than the sealing body.

The invention discloses an aluminum electrolytic capacitor for automotive electronics and a preparation method of the aluminum electrolytic capacitor. The capacitor comprises a core package formed by winding an anode foil, a cathode foil and electrolytic paper, and an electrolyte impregnated in the core package. The electrolyte comprises a solvent, a solute and an additive, the solvent contains ethylene glycol monoalkyl ether, and the additive contains phosphotungstic acid. The preparation method comprises the steps of riveting, element winding, drying treatment, electrolyte impregnation, packaging, aging and the like, wherein the impregnation rate is controlled to be 1.31-1.51 in the electrolyte impregnation step. Through the optimized electrolyte formula and strict process control, the high-frequency ESR of the capacitor is remarkably reduced, the hydration corrosion of an anode oxide film is effectively inhibited, the high-temperature resistance and the mechanical vibration reliability are improved, and the harsh application requirements in the field of automotive electronics are completely met.

The utility model discloses a large-capacity long-life aluminum electrolytic capacitor, which comprises an aluminum shell and a rubber plug, the rubber plug is mounted at the top of the aluminum shell, a core bag is mounted in the aluminum shell, a buckling part is arranged on the upper side of the aluminum shell, the core bag is connected with a guide pin, the guide pin extends to the upper side of the rubber plug, a fixed seat is mounted at the upper end of the rubber plug, and the fixed seat is connected with the aluminum shell. A connecting frame is installed on the fixed seat, an insulating sleeve is arranged on the connecting frame, the guide pin penetrates through the insulating sleeve, an expansion section is arranged on the upper side of the insulating sleeve, the expansion section is in a big-end-up cone shape, and a groove is formed in the upper end of the rubber plug. And the expansion section is arranged at the upper end of the insulating sleeve, so that after the guide pin is accidentally collided or extruded, when the guide pin is bent due to large pressure, the expansion section can play a transition role, and the bending degree of the guide pin is reduced.

The application relates to the technical field of electrolyte, and discloses an electrolyte for high-conductivity high-water-content wide-temperature-range aluminum electrolytic capacitors and a preparation method thereof, which comprises main solutes 5-20%, auxiliary solutes 0.5-5%, solvents 50-90% and additives 0.5-10% in percentage by mass. The electrolyte prepared by the application has a conductivity of 38 ms / cm, a water content of not less than 40%, and a flashover voltage of 210 V. The electrolyte of the application can effectively reduce the vapor pressure of the electrolyte, inhibit gas generation, reduce the internal pressure of the capacitor and improve the high-temperature performance of the electrolyte through the cooperation between raw materials. The electrolyte of the application has stable high-temperature performance, a wide use temperature range and high oxidation efficiency, and the aluminum electrolytic capacitor assembled by using the electrolyte can be reliably and continuously operated for more than 3000 hours under the environment of-40 DEG C to +105 DEG C.