705results about "Liquid electrolytic capacitors" patented technology

The present application relates to the technical field of aluminum electrolytic capacitors, and specifically discloses a low-temperature, medium- and high-voltage aluminum electrolytic capacitor. Among them, the electrolyte of the low-temperature, medium- and high-voltage aluminum electrolytic capacitor includes the following raw materials: a main solvent, a low-melting point co-solvent, a main solute, an auxiliary solute, a flash voltage enhancer, a hydrogen remover, and a waterproofing auxiliary agent. Among them, the flash voltage enhancer is modified nano-silica. The present invention uses a vinyl silane coupling agent to modify the surface of nano-silica, and then esterifies polyvinyl alcohol and allyl succinic anhydride to form allyl succinic anhydride-grafted polyvinyl alcohol, and effectively combines it with silanized nano-silica, so that the nano-silica particles can be evenly dispersed in the electrolyte to increase the flash voltage of the electrolyte, and by introducing a low-melting point co-solvent, the melting point of the electrolyte system can be effectively reduced, so that the capacitor can maintain low viscosity and good electrical properties in a low-temperature environment.

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

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

An electrolytic capacitor includes a winding portion, an anode lead member, and a cathode lead member. The winding portion includes an anode foil and a cathode foil that are wound. The anode lead member is connected to the anode foil and extends in a first direction. The cathode lead member is connected to the cathode foil and extends in the first direction. The winding portion has a shape viewed in the first direction, the shape including a first peripheral region and a second peripheral region that are opposed to each other in a second direction intersecting the first direction, and a third peripheral region and a fourth peripheral region that are opposed to each other in a third direction intersecting the first direction and the second direction. The length of the winding portion in the third direction is larger than the length of the winding portion in the second direction. The anode lead member and the cathode lead member are arranged point-symmetrically with respect to a center of the winding portion when viewed in the first direction.

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 a universal low-impedance electrolyte for a high-voltage aluminum electrolytic capacitor and the high-voltage aluminum electrolytic capacitor in the technical field of electrolytes for capacitors, the universal low-impedance electrolyte is suitable for high-voltage lead type, ox horn type and bolt type aluminum electrolytic capacitors, and the universal low-impedance electrolyte comprises the following components in percentage by mass: 60-80% of a solvent, 10-18% of a main solute, 2-6% of a solute improver and 0.5-4% of a special solute, 5-15 wt% of a PVA and SiO2 aerosol compound, and 2-7 wt% of other functional additives; according to the universal low-impedance electrolyte for the high-voltage aluminum electrolytic capacitor and the high-voltage aluminum electrolytic capacitor, the conductivity and the sparking voltage of the electrolyte are properly improved, so that the internal resistance and the breakdown risk of the capacitor are reduced, various electrolytes are replaced, the production efficiency is greatly improved, and the production cost is reduced; the method can be applied to manufacturing of 450V and below lead, ox horn and bolt aluminum electrolytic capacitors, the production line impregnation efficiency is greatly improved, and the production cost is saved.

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.

The present invention provides a solid electrolytic capacitor in which a conductive polymer and an electrolyte solution are used in combination, an increase in equivalent series resistance in a high-temperature environment is suppressed even if fibrillated fibers are included as a separator, and a decrease in electrostatic capacity is suppressed. This solid electrolytic capacitor is provided with: an anode body that has a dielectric film; a cathode body that faces the anode body; and an inter-electrode layer that is interposed between the anode body and the cathode body. The inter-electrode layer includes a conductive polymer, an electrolyte solution, and a separator. The separator contains fibrillated fibers and has an air permeation resistance of 5.8 (sec / 100 mL) or less. The electric conductivity of the inter-electrode layer is not less than 55 (S) but less than 180 (S).

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.

The invention discloses a capacitor capable of reducing tantalum capacitance attenuation and a preparation method thereof. The preparation method comprises the following steps: preparing tantalum powder into a tantalum block; sintering the tantalum block; performing a forming process on the tantalum block to obtain a tantalum core with a dielectric oxide film; carrying out dipping treatment on the tantalum core with the dielectric oxide film, and then packaging the tantalum core; and aging the packaged tantalum core to complete the preparation of the capacitor. According to the forming process, a gradient boosting forming method is adopted, the forming voltage multiplying power of the tantalum core is improved, and the Ta2O5 dielectric oxide film with good performance is obtained; during assembly, a polarising agent is added into a working electrolyte to inhibit generation of hydrogen in a product, reduce air pressure release in the capacitor and stabilize the capacity; and through adjustment of an aging process method, the non-solid electrolyte tantalum capacitor with high voltage and larger capacity is manufactured.

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 discloses an aluminum electrolytic capacitor packaging method compatible with an air cooling technology and a single-phase immersed liquid cooling technology, and the method employs the combination of two layers of rubber plugs for packaging, the inner sealing rubber plug achieves the air tightness and water tightness, and the outer rubber plug achieves the protection effect of isolating a refrigerant. The positions, corresponding to the two layers of rubber plugs, of the aluminum shell are respectively provided with a girdling for fixing the rubber plugs. By adopting the packaging method, the aluminum electrolytic capacitor can work for a long time in an air cooling scheme, and can be soaked in a single-phase refrigerant to work stably after being stored for a long time in an air environment.

The invention relates to the technical field of aluminum electrolytic capacitor manufacturing, in particular to an anti-lightning aluminum electrolytic capacitor and a manufacturing method thereof.The anti-lightning aluminum electrolytic capacitor comprises an anode foil, a cathode foil, electrolytic paper, electrolyte, a rubber plug, a guide pin and an aluminum shell, the guide pin is riveted to the surfaces of the anode foil and the cathode foil, and the anode foil and the cathode foil are isolated through the electrolytic paper; and winding to form a capacitor core package, infiltrating the core package by the electrolyte, filling the core package into an aluminum shell, sealing the aluminum shell by a rubber plug to form an aluminum electrolytic capacitor, and aging the capacitor to obtain a finished product. According to the anti-lightning aluminum electrolytic capacitor and the manufacturing method thereof provided by the invention, the high-conductivity covering film and the optimized positive foil structure are adopted, so that the anti-lightning aluminum electrolytic capacitor has relatively high compression strength and anti-lightning capability, stable performance can be kept when the anti-lightning aluminum electrolytic capacitor is subjected to strong current impact such as lightning stroke, and the reliability and the safety of electronic equipment are improved.

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.

An electrolytic capacitor includes a container with an opening, a capacitor element contained in the container, and a sealing body that seals the opening. The capacitor element includes an anode body provided with a dielectric layer on its surface, and a conductive polymer that covers a portion of the dielectric layer. The sealing body includes an elastic polymer. An antioxidant component is present in a space closed by the container and the sealing body. The antioxidant component includes a first antioxidant having no boiling point or a boiling point of 320° C. or higher.

The invention discloses a humic acid capacitor for stimulating microbial electrical metabolism and application of the humic acid capacitor in anaerobic digestion, and belongs to the field of biological metabolism and transformation application. The electron storage capacity of humic acid is improved through micro-current catalysis, so that the humic acid becomes a biological capacitor capable of promoting microbial electrical metabolism. The biological capacitor can be used for adjusting unbalanced metabolism between acid-producing bacteria and methanogens in the sludge anaerobic digestion process, the electron utilization rate in a biological metabolism and conversion system is improved, and the methane production performance of sludge anaerobic digestion is greatly improved; the humic acid capacitor can increase the daily methane yield in the sludge anaerobic digestion process by 80-100%. According to the method, the biological capacitor with excellent performance can be obtained only by applying the micro current, and the method is green, environment-friendly, low in cost and high in efficiency, is a new method and idea for improving the anaerobic digestion performance of the sludge, can be popularized to the fields of development and utilization of new energy such as other biological metabolism and conversion and solar energy, and has huge application value.

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.

This capacitor 1a comprises a metal tantalum 10, a conductor 20, and a tantalum oxide film 30. The tantalum oxide film 30 is disposed in contact with the metal tantalum 10, and is disposed between the metal tantalum 10 and the conductor 20. The tantalum oxide film 30 includes a first part 31 and a second part 32 containing fluorine. The second part 32 exists at a position closer to the metal tantalum 10 than the first part 31 in the thickness direction of the tantalum oxide film 30. Additionally, the concentration of fluorine in the second part 32 is lower than the concentration of fluorine in the first part 31.

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