505results about "Liquid electrolytic capacitors" patented technology

An apparatus is disclosed which includes an electrolytic capacitive element with multiple capacitor sections.

Provided is an electrolytic capacitor including a capacitor element and a liquid component. The capacitor element includes an anode foil having a dielectric layer on a surface of the anode foil, and a conductive polymer component in contact with at least a portion of the dielectric layer. The conductive polymer component contains a self-doped conductive polymer. The liquid component contains at least one solvent selected from the group consisting of alkylene glycols having 4 or more carbon atoms and polyalkylene glycols having a repeating structure of oxyalkylene having 3 or more carbon atoms.

The invention discloses a low-temperature-resistant working electrolyte for a liquid capacitor and a preparation method of the low-temperature-resistant working electrolyte, and relates to the technical field of electrolytes for capacitors. The low-temperature-resistant working electrolyte is prepared from the following raw materials: ethylene glycol, an auxiliary solvent, a solute, ammonium hypophosphite, a synergist, a stabilizer, 1-ethyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imine, boron nitride nanosheets and 2, 2, 2-trifluoroethyl acrylate. According to the invention, while the auxiliary solvent with a specific proportion is added, the synergist capable of improving the conductivity, the cycle life, the low-temperature ion mobility and the low-temperature power density and the 2, 2, 2-trifluoroethyl acrylate capable of further improving the electrochemical performance stability at the low temperature are also introduced, so that the low-temperature electrochemical performance of the lithium ion battery is improved. And a specific preparation method capable of preventing agglomeration and improving the smoothness of an ion conduction path is combined. Therefore, the electrolyte is more excellent in chemical performance at low temperature and wider in application prospect.

The invention discloses an aluminum electrolytic capacitor special for an electric tool and a preparation method of the aluminum electrolytic capacitor. The method comprises the following steps that a positive electrode guide pin and a negative electrode guide pin are riveted to an anode foil and a cathode foil respectively; placing electrolytic paper between the anode foil and the cathode foil, and winding to form a core package; carrying out baking drying and electrolyte impregnation treatment on the wound core package, and then carrying out packaging and aging; the electrolyte consists of the following components in percentage by mass: 45-60% of a solvent, 25-40% of a solute, 5-15% of an additive and 5-10% of a stabilizer, the solute contains 2-butyl suberic acid; the stabilizer contains alkyl phosphate. According to the preparation method of the aluminum electrolytic capacitor special for the electric tool, the electrolyte formula is optimized, oxidation hydrolysis of the electrode foil and the oxidation film is effectively inhibited, the ion migration resistance is reduced, the polarization phenomenon is reduced, the loss value and the equivalent series resistance (ESR) of the obtained capacitor are remarkably reduced, the ripple resistance is improved, and the aluminum electrolytic capacitor is suitable for the electric tool.

Provided are: an electrolytic capacitor in which a decrease in electrostatic capacity is suppressed even in a high-temperature environment; and a manufacturing method. An electrolytic capacitor comprises: a capacitor element having a positive electrode foil, a negative electrode foil, an electrolytic solution, and a solid electrolyte layer; a case that accommodates the capacitor element; and a sealing body for sealing the case. The sealing body has an elastic body containing an elastomer. The elastomer contains butyl rubber, and is contained in the elastic body at 31 wt% or more. The electrolytic solution contains glycerin in the amount of 40 wt% or more in the solvent of the electrolytic solution.

The invention discloses a special aluminum fixing capacitor for an electronic detonator with ultralow electric leakage characteristic and a preparation method thereof, the capacitor comprises a positive foil electrode, a negative foil electrode, an aluminum foil or an aluminum alloy foil coated with an oxide film on the surface, electrolytic paper and an electrolyte, and the electrolyte can be a phosphate-based electrolyte, a borate-based electrolyte or an organic electrolyte containing high-conductivity salt, and an additive, the preparation method comprises the following steps: slitting positive and negative foils and electrolytic paper, winding the positive and negative foils and the electrolytic paper to form a concentric circle, forming a repair oxide film, dipping a conductive polymer material, baking and polymerizing to form a conductive film, injecting a pouring sealant into an aluminum shell, and carrying out heat treatment to obtain the conductive aluminum shell. The formation liquid is ammonium dihydrogen phosphate, ammonium adipate or boric acid aqueous solution, and the pouring sealant is epoxy resin or polyurethane; the capacitor has an ultra-low electric leakage characteristic, is suitable for being used as a power supply energy storage element in an electronic detonator system, stabilizes power supply output and inhibits an electric leakage phenomenon.

The present invention provides a metal foil for an electrolytic capacitor, said metal foil including a valve metal and having two main surface regions. At least one of the main surface regions has a plurality of recesses extending in a line shape, and the depth of the recesses is between 4 μm and 58 μm inclusive, or the projected area ratio of the recesses in the main surface regions is between 8% and 45% inclusive.

A capacitor includes a capacitor element having a predetermined liquid preparation held between a pair of electrodes facing each other across a separator, a body case for housing the capacitor element, and a sealing member made of rubber for sealing seals the body case. A supplying portion is provided in contact with the sealing member to supply the liquid preparation held in the capacitor element to the sealing member. The liquid preparation has a lipid-soluble sealing member deterioration preventing agent dissolved in a lipophilic solvent. The sealing member deterioration preventing agent supplied by the supplying portion to the sealing member permeates the sealing member. The ratio by weight of the sealing member deterioration preventing agent in the sealing member to the sealing member is 0.1% by weight to 25% by weight.

An electrode foil for an electrolytic capacitor includes: an anode body that includes a core part and a porous part disposed on a surface of the core part, and contains a first metal; a first dielectric layer that covers at least a part of the porous part; and a second dielectric layer that covers at least a part of the first dielectric layer. The second dielectric layer contains an oxide of a second metal. The first dielectric layer includes a first part having a thickness T1 and a second part having a thickness T2 smaller than the thickness T1.

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 disclosed manufacturing method includes, in the following order: a polymer layer formation step of forming a conductive polymer layer containing a conductive polymer component; a stacked body formation step of forming a stacked body including the conductive polymer layer by stacking an anode foil, a cathode foil, and a separator such that the separator is disposed between the anode foil and the cathode foil; and an impregnation step of impregnating the stacked body with a liquid component. The polymer layer formation step includes: a step (a) of applying an application liquid containing the conductive polymer component and a liquid medium to a predetermined surface and the separator; and a step (b) of forming the conductive polymer layer on the predetermined surface and the separator by removing a portion of the liquid medium from the applied application liquid. The liquid medium includes water and an organic compound that does not boil at 100° C. under 1 atm. In the step (b), a portion of the liquid medium is removed such that the organic compound remains in the conductive polymer layer.

The invention relates to the technical field of aluminum electrolytic capacitor electrolyte processing, in particular to a high-performance aluminum electrolytic capacitor electrolyte and a preparation method thereof. The invention discloses a water-soluble conductive agent, which is prepared from the following raw materials in percentage by weight: 5 to 10 percent of conductive salt, 0.1 to 2 percent of corrosion inhibitor, 3 to 5 percent of butyl-terminated fatty alcohol-polyoxyethylene ether, 2 to 5 percent of polyacrylic acid-polyacrylamide diblock copolymer, 0.5 to 2 percent of additive, 0.5 to 2 percent of straight-chain polycarboxylic acid, 6 to 10 percent of ionic liquid and the balance of solvent, the butyl-terminated fatty alcohol-polyoxyethylene ether has the structural formula of R-O-(CH2CH2O) xCH2CH2OBu, r represents a fatty alcohol group, is C12-18 alkyl, and is a straight chain or a branched chain; n is the addition number of ethylene oxide, and x is equal to 10-50; through the synergistic effect of the components in the formula, a stable and efficient electrolyte system is formed, the performance and reliability of the aluminum electrolytic capacitor in severe environments such as high temperature and low temperature are remarkably improved, the service life of the aluminum electrolytic capacitor is prolonged, and the requirements of modern electronic equipment for high-performance capacitors are met.

The invention relates to the technical field of drying equipment, and particularly provides combined drying equipment for manufacturing an electrolytic capacitor. The combined drying equipment for manufacturing the electrolytic capacitor comprises a drying conveying assembly, an air channel assembly, a drying assembly, a backflow assembly and two flow increasing assemblies. According to the invention, the electrolytic capacitor can be subjected to rapid and uniform double-sided heating and drying, the surface of the electrolytic capacitor can be ensured to be uniformly heated, non-uniform drying possibly caused by single-sided heating is avoided, and meanwhile, gradient temperature change is provided, so that the temperature of the electrolytic capacitor can be gradually adjusted, and the service life of the electrolytic capacitor is prolonged. The material damage caused by too fast temperature change is prevented, tangential airflow is provided to impact the main drying electrolytic capacitor, the partial damage of the electrolytic capacitor caused by too concentrated heat when the opposite heating airflow is opposite to the main drying airflow for drying and heating is prevented, the airflow resistance is reduced, the hot air flowing efficiency is improved, and the energy waste is reduced. The energy utilization efficiency is improved, and the drying cost is saved.

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.

An electrolytic capacitor includes a capacitor element and a liquid component that contains a non-aqueous solvent. The capacitor element includes an anode foil having a dielectric layer on a surface thereof, a cathode foil, and a separator and a conductive polymer component that are interposed between the anode foil and the cathode foil. The separator contains synthetic resin fibers. The water concentration in the liquid component is 1000 ppm or more and 10000 ppm or less by mass.

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.

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.

To provide an electrolytic capacitor for intermediate and high levels of voltages of at least 100 V, in which the total amount of gas to be generated in an electrolytic capacitor is suppressed.SOLUTION: A positive electrode foil of an electrolytic capacitor includes: a diffusion part including a tunnel-shaped pit formed from a foil surface to a foil-thickness direction; and a dielectric oxide coating film formed in the surface of the diffusion part. The negative electrode body of the electrolytic capacitor has a negative electrode foil formed of a valve-action metal and a carbon layer formed on the negative electrode foil.SELECTED DRAWING: None

The present invention provides an undercoat foil for an energy storage device electrode, an energy storage device electrode, and an energy storage device, the undercoat foil having a collector substrate and an undercoat layer formed on at least one surface of the collector substrate, the undercoat layer including an aqueous undercoat layer and a non-aqueous undercoat layer; the water-based prime coat is located between the current collection substrate and the non-water-based prime coat, or the non-water-based prime coat is located between the current collection substrate and the water-based prime coat; the water-based priming coat comprises conductive particles and a water-soluble polymer; the non-aqueous base coat layer includes conductive particles and a non-water-soluble polymer. When used in an energy storage device, the undercoat foil of the present invention can suppress damage to a collector substrate caused by charge / discharge cycles, thereby improving high-temperature storage performance and low-temperature output performance of the energy storage device.

An electrolytic capacitor 1 includes: a capacitor element 3 in which an anode foil 5 and a cathode foil 7 each having a dielectric oxide film face each other across a separator 6; a body case 2 that houses the capacitor element 3; and a sealing member 4 that seals the body case 2. An electrolyte and a hydrophilic compound are held between the anode foil 5 and the cathode foil 7. A sealing member deterioration preventing agent immiscible with the hydrophilic compound is arranged inside the body case 2.