415results about "Wound capacitors" patented technology

To provide a film that allows production of a capacitor exhibiting superior operability of safety functions and that maintains withstand voltage at high temperatures, thereby yielding a capacitor with high withstand voltage at high temperatures.SOLUTION: A film has at least an A layer, wherein (1) the A layer contains, based on 100 mass%, 55 mass% or more and 97 mass% or less of a polypropylene resin and 3 mass% or more and 45 mass% or less of a polymer having an alicyclic structure in a side chain, and (2) a reduced peak height Spk of at least one surface is 0.02 μm or more and 0.15 μm or less.SELECTED DRAWING: None

The invention provides a capacitor core rod plug dismounting device, and belongs to the technical field of capacitor preparation, and the device comprises a strip-shaped frame which is vertical and is provided with two open ends, and the front and rear inner side surfaces are provided with guide grooves; the clamping assembly comprises two movable rods arranged on the two sides of the strip-shaped frame respectively, the axes of the two movable rods are coaxial and are perpendicular to the side face of the strip-shaped frame, and the opposite ends of the two movable rods are elastically arranged in a telescopic mode along the axes and are provided with clamping plates; the two movable rods are synchronously and oppositely arranged along the axis in a moving manner; the pair of bearing rods is horizontally arranged below the strip-shaped frame and perpendicular to the side face of the strip-shaped frame, and the two bearing rods are movably arranged in the width direction of the strip-shaped frame; the dismantling assembly comprises two pairs of top plates which are vertically arranged below the corresponding guide grooves respectively, and the top plates are movably arranged in the width direction of the strip-shaped frame and the axis direction of the movable rod; the two bearing rods respectively penetrate through the two pairs of top plates; and the transmission assembly is arranged between the movable rod and the bearing rod. The dismounting device can achieve the purpose of automatically pulling out the plug, and the production efficiency of the thin film capacitor is improved.

A capacitor provides a plurality of selectable capacitance values, by selective connection of six capacitor sections of a capacitive element each having a capacitance value. The capacitor sections are provided in a plurality of wound cylindrical capacitive elements. Two vertically stacked wound cylindrical capacitance elements may each provide three capacitor sections. There may be six separately wound cylindrical capacitive elements each providing a capacitor section. The capacitor sections have a common element terminal.

An apparatus suitable for use in an air-conditioning system and configured to provide a plurality of selectable capacitance values includes a plurality of capacitive devices and a pressure interrupter cover assembly. Each of the capacitive devices has a first capacitor terminal and a second capacitor terminal. The pressure interrupter cover assembly includes a deformable cover, a set of capacitor cover terminals, a common cover terminal, and a set of insulation structures. The apparatus also includes a conductor configured to electrically connect the second capacitor terminal of at least one of the capacitive devices to the common cover terminal.

A system for a capacitor of an inverter of an electric vehicle. A system includes an inverter for converting direct current (DC) power from a battery to alternating current (AC) power to drive an electric machine, where the inverter includes: a capacitor assembly including: a planar busbar including a first DC busbar and a second DC busbar; a capacitor on the same side of the first DC busbar and the second DC busbar, the capacitor including a first end cap extending in a direction substantially perpendicular to a longitudinal direction of the planar busbar; and a first connection plate disposed at the first end cap to connect the capacitor to the first DC bus bar, and a second connection plate disposed at the second end cap to connect the capacitor to the second DC bus bar.

This metallized film manufacturing device comprises: a supply unit that supplies a dielectric film in a lengthwise direction; a printing roll that has a rotational axis in the width direction of the dielectric film, and that prints an insulation pattern on a surface of the dielectric film; and a deposition unit that forms a metal deposition electrode at positions, except where the insulation pattern is, on the surface of the dielectric film. The printing roll has protrusions that are formed axially extending on the outer circumferential surface of the printing roll, and that correspond to the insulation pattern. A reinforcing part is formed at one end of each protrusion in the axial direction of the protrusion.

Provided is a capacitor that is lightweight yet can reduce moisture absorption. The capacitor comprises a capacitor element and a protective film. The capacitor element has a first end-face electrode, a second end-face electrode, and an outer peripheral surface. The second end-face electrode exists at the side opposite to the first end-face electrode. The outer peripheral surface exists between the first end-face electrode and the second end-face electrode. The protective film has a first protective part, a second protective part, and a third protective part. The first protective part protects the peripheral edge part of the first end-face electrode. The second protective part protects the peripheral edge part of the second end-face electrode. The third protective part is connected to the first protective part and the second protective part, and protects the outer peripheral surface.

Method for producing a dielectric for a capacitor, method for producing a capacitor and capacitor The present application relates to a method for producing a dielectric for a capacitor, a method for producing a capacitor, and a capacitor. The method includes the production of a polymer chain from a monomer by polymerization. In this method, some repeat units in the polymer chain are functionalized with a reactive group. The reactive groups are branched from each polymer chain. Furthermore, the reactive groups are suitable for reacting with a linker molecule. The reactive groups are thus suitable for forming a covalent bond with the linker molecule. As a further method step, linker molecules are added to the polymer chain, each linker molecule having at least two chemical connection points, each of which is suitable for forming a covalent bond with a reactive group. Finally, cross-linking of the polymer chain is achieved by reaction of the linker molecules having two reactive groups.

The utility model relates to the technical field of capacitors, and discloses a low-noise capacitor for starting and operating a fan motor, which comprises a thin film A. The outer wall of the thin film A is wound with a thin film B through a winding needle, and the tail ends of the thin film A and the thin film B are provided with metal cleaning layers with specific lengths through electrode short-circuit cleaning of a winding machine. An outer wrapping film is pasted on the outer wall of the metal cleaning layer, the film A is a polypropylene film, the thickness of the film A ranges from 6 micrometers to 8 micrometers, good insulation performance can be provided, zinc-aluminum alloy is evaporated on the surface of the film A, the evaporation thickness is the square resistance value of 6-15 omega / square, the film A is used for improving the self-healing capacity and bearing higher voltage, and the film B is a polypropylene film and is used for improving the self-healing capacity and bearing higher voltage. And the heat resistance of the capacitor is enhanced. According to the utility model, by adopting a base film evaporation plasma treatment technical means, the problems that the PP film is a non-polar material, the surface tension is low, and the film layer fitting effect is poor are effectively solved.

A system including an inverter to convert direct current (DC) power from a battery to alternating current (AC) power to drive a motor, wherein the inverter includes: a capacitor assembly, the capacitor assembly including: a planar busbar including a first DC busbar and a second DC busbar; a capacitor on a same side of the first DC busbar and the second DC busbar, the capacitor including a first end cap extending in a direction substantially perpendicular to a longitudinal direction of the planar busbar; and a first connection plate shaped to transfer heat from the first end cap of the capacitor and the first connection plate to a first external surface.

The invention relates to a capacitive element (1) comprising: - a cylindrical casing (10) extending along a longitudinal axis (X); - a core (3) extending along the longitudinal axis (X) between an upper end (31) and a lower end (32); - a roll (2), housed inside the casing (10) and formed: o of a first film (20) provided with a first insulating portion (200) extended by a first conductive portion (201), and o of a second film (21) provided with a second insulating portion (210) extended by a second conductive portion (211), the two films (20, 21) being stacked and wound around the core (3) so that the first insulating portion (200) is in contact with the second insulating portion (210) and so that the first conductive portion (201) and the second conductive portion (211) are opposite along a longitudinal axis of the capacitive element (1), the first conductive portion (201) forming a first end of the roll, the second conductive portion (211) forming a second end of the roll, - a first metallized layer (40) formed on an upper surface of the roll at the location of the first end of the roll; - a second metallized layer (41) formed on a lower surface of the roll at the location of the second end of the roll; - two radial outlets (50, 51), one of the two radial outlets (50) being in electrical connection with the first metallized layer (40), the other of the two radial outlets (51) being in electrical connection with the second metallized layer (41), the two radial outlets (50, 51) being mounted at least partially projecting from an upper surface (100) of the casing (10), characterized in that the core (3) is made at least partially from a metal material, and has an outer surface at least partially covered with a layer of insulating material (30).

This invention discloses a metallized film and a metallized film capacitor. The metallized film includes an organic thin film layer, a high sheet resistance layer, and multiple thickened ribs. The width of the organic thin film layer is greater than the width of the high sheet resistance layer, creating an unplated area through the width difference between the organic thin film layer and the high sheet resistance layer. The high sheet resistance layer is deposited on one side of the organic thin film layer, and the multiple thickened ribs are spaced apart on the other side of the high sheet resistance layer opposite to the organic thin film layer. This effectively increases the interlayer air gap of the metallized film capacitor, prevents incomplete self-healing and short circuits due to small interlayer air gaps during self-healing, and ensures the safety of the metallized film capacitor.

The present invention addresses a problem of providing a polypropylene film that has excellent voltage resistance characteristics and reliability in a high-temperature environment and is suitable for capacitor applications or the like used under a high temperature and a high voltage. Provided is a polypropylene film including a cyclic olefin resin, in which in a case where a strength in a main orientation direction measured at 23°C is F(A23) and a strength in a main orientation orthogonal direction measured at 23°C is F(B23), F(A23) + F(B23) is 120 MPa or more and 1000 MPa or less, and a shrinkage rate in the main orientation direction measured at 150°C is -2.0% or more and 3.0% or less.

A filter device, method of manufacture and use thereof. The filter device comprises a foil-wound inductor formed by a first conductive foil strip having a first terminal and a second terminal, the first conductive foil strip wound around a core to form a plurality of winding layers such that the first terminal is proximate the core and the second terminal is located at an outermost winding layer, and a continuous dielectric insulating layer between the plurality of winding layers of the first conductive foil strip; and a tunable capacitor formed by a second conductive foil strip at least partially encircling the outermost winding layer of the foil-wound inductor and a dielectric insulating layer disposed therebetween, the second conductive foil strip having a portion that can be trimmed to alter a capacitance between the second conductive foil strip and the first or second terminal of the foil-wound inductor.

The present invention is a film for a capacitor or a film comprising a crystalline dicyclopentadiene ring-opening polymer hydrogenate having a crystal long period in a penetration direction of 120 angstrom or less as measured by small-angle X-ray scattering method.

Class Y capacitor (1, 7, 12, 16, 27), which can be connected between a line and ground, comprising a first and a second electric conductor (2, 3), which are separated by a dielectric medium, wherein the first electric conductor (2) is connected to a first leg (4, 8, 9, 13, 18) and the second electric conductor (3) is connected to a second leg (5, 10, 11, 19), wherein the first leg (4, 8, 9, 13, 18) has a larger cross-section than the second leg (5, 10, 11, 19). In addition, an inverter (23) with a class Y capacitor (1, 7, 12, 16, 27) is described.

The utility model discloses a film capacitor for flexible direct current power transmission, which belongs to the technical field of capacitors and comprises a shell, a plurality of capacitor cores and extraction electrodes, the shell is made of metal materials, the plurality of capacitor cores are grouped to form a plurality of capacitor core independent groups, and the extraction electrodes are arranged in the shell. Each capacitor core independent group is connected with a tinned copper plate, the lead-out electrode is provided with a laminated busbar and is connected with the tinned copper plate in a matched manner through the laminated busbar, and the plurality of capacitor core independent groups are packaged in the shell through a potting material. The thin-film capacitor can simultaneously meet the performance requirements of low self-inductance, low temperature rise, high energy density, light weight and long service life, thereby effectively improving the safety and reliability of the thin-film capacitor for flexible direct-current power transmission.

A film capacitor that includes: a dielectric resin film having a first surface and a second surface opposite each other; a first metal layer on the first surface; and a second metal layer on the second surface, wherein in a mapping image of nitrogen atoms observed by energy dispersive X-ray spectroscopy in a section of the dielectric resin film along a thickness direction of the dielectric resin film, a ratio of an area of nitrogen atom aggregation regions to an entire observation area is 35% or less.

The utility model relates to the technical field of thin-film capacitors, in particular to a three-level thin-film capacitor, which not only can meet the requirement of high capacity required by a high-power inverter, but also can reduce the occupied space in an inverter module and is convenient to install, and comprises a capacitor shell and a capacitor core, the capacitor core comprises three core groups which are arranged in the same capacitor shell, each core group is composed of two groups of cores which are connected in parallel, two ends of each core group are fixedly connected with welding copper plates, the welding copper plates are connected with busbars provided with electrode through holes, extraction electrodes penetrate through the electrode through holes, and the extraction electrodes are connected with the busbars. The core is a flat core formed by winding a metalized film.

A system for a housing recess of an inverter of an electric vehicle. A system includes a heat sink for a capacitor assembly of an inverter, the heat sink including: a first recess extending from a chassis of the inverter, wherein the first recess includes a first surface configured to transfer heat from a first surface of a first capacitor and a second surface configured to transfer heat from a second surface of the first capacitor; and a second recess extending from the chassis of the inverter, wherein the second recess includes a first surface configured to transfer heat from a first surface of a second capacitor and a second surface configured to transfer heat from a second surface of the second capacitor.

Provided is a stretched film having high dielectric breakdown strength even under a high temperature environment of 120°C or higher, and further capable of imparting excellent withstand voltage performance to a capacitor element even under a room temperature (for example, 25°C) and a high temperature environment of 120°C or higher.　The present invention is a stretched film that contains a polypropylene-based resin, and the number of regions R1 measured by a prescribed method is 10 or more. Alternatively, the present invention is a stretched film that contains a polypropylene-based resin, and the average value of the maximum lengths of regions 2 in the thickness direction, which are measured by a prescribed method, is 10-300 nm. Alternatively, the present invention is a stretched film that contains a polypropylene-based resin, and the average value of the maximum lengths of regions 3 in a direction orthogonal to the thickness direction, which are measured by a prescribed method, is 30 nm or more.

A capacitor includes: a capacitor element that includes a first electrode disposed on one end surface of the capacitor element, a second electrode disposed on another end surface of the capacitor element, and a circumferential surface connecting the first electrode to the second electrode; a first bus bar and a second bus bar that are connected to the first electrode and the second electrode, respectively; a case that houses the capacitor element; and a filler resin in which the capacitor element, a part of the first bus bar, and a part of the second bus bar are embedded, the filler resin being filled inside the case. The circumferential surface includes a plane face. The first bus bar includes an opposing portion that has a flat-plate-shape and faces the plane face. The opposing portion includes a protrusion that protrudes toward the plane face and abuts the plane face.

A capacitor module according to the present disclosure comprises: a case that has a bottom surface and lateral surfaces; a capacitor element that has a first electrode and a second electrode; a first bus bar that is connected to the first electrode; a second bus bar that is connected to the second electrode; a cooling plate that is placed between the first bus bar and the second bus bar, is in contact with the inner sides of lateral surfaces of the case, and is in contact with at least one of the first bus bar and the second bus bar; a sealing resin that fills the inside of the case; and a locking part that locks the cooling plate and the at least one of the first bus bar and the second bus bar.

To provide a case that allows easy positioning of a heat dissipation member.SOLUTION: A case 30 for accommodating a capacitor module 10 and a heat dissipation member 20 includes a partition 32 that is interposed between the capacitor module 10 and the heat dissipation member 20 when the capacitor module 10 and the heat dissipation member 20 are accommodated and into which the heat dissipation member 20 can be inserted. The partition 32 includes two plate-like portions 32a that face each other with a gap between them, and an insertion portion 32b which is formed between the two plate-like portions 32a and into which the substrate portion 20a of the heat dissipation member 20 can be inserted from above and accommodated.SELECTED DRAWING: Figure 1

This electronic component has a first external electrode, a base body part, and a second external electrode that are disposed in order in a first direction. A direction opposite to the first direction is defined as a second direction. A direction orthogonal to the first direction is defined as an orthogonal direction. The first external electrode includes: a first external electrode body which is spaced apart from the base body part and disposed in a second direction relative to the second external electrode; and a first external electrode extension part extending in the first direction from an edge section of the first external electrode body. The second external electrode includes: a second external electrode body which is spaced apart from the base body part and disposed in the first direction relative to the first external electrode; and a second external electrode extension part extending in the second direction from an edge section of the second external electrode body. A portion of the first external electrode extension part and a portion of the second external electrode extension part constitute a pair of facing parts facing each other in the orthogonal direction. An insulating layer is provided between the pair of facing parts.

The invention discloses a feed-through capacitor with ultralow inductance, which relates to the technical field of capacitors, and comprises a capacitor core, a positive bus, a negative bus, a shell and a filler, the capacitor core is formed by continuously winding the same metallized film, and comprises a plurality of groups of positive annular belt layers and reverse annular belt layers which are coaxially and alternately distributed; insulating sleeves are arranged between the adjacent forward annular belt layers and the reverse annular belt layers, axial openings are formed in the pipe walls of the insulating sleeves, a through copper pipe is arranged in the center of the capacitor core, insulating coatings are arranged on the inner wall and the outer wall of the through copper pipe, and the positive bus and the negative bus are arranged in the through copper pipe in parallel in a penetrating mode and are separated through an insulating plate. The positive bus is conducted with all the forward annular belt layers at one end of the capacitor core, the negative bus is conducted with all the reverse annular belt layers at the other end of the capacitor core, the outer side of the capacitor core is sleeved with the shell, and the filler is poured between the capacitor core and the shell. According to the invention, the inductance of the capacitor is effectively reduced, and a more reliable solution with better performance is provided.

A capacitor module 1 comprises: a first capacitor unit 10 that includes at least one film capacitor 11; a second capacitor unit 20 that includes a substrate 21 and at least one layered ceramic capacitor 22 mounted on the substrate 21; a first conductor 30 that is electrically connected to a positive-electrode side of the first capacitor unit 10 and a positive-electrode side of the second capacitor unit 20, the first conductor 30 having a first terminal 31 on the side opposite from the first capacitor unit 10 and the second capacitor unit 20; a second conductor 40 that is electrically connected to a negative-electrode side of the first capacitor unit 10 and a negative-electrode side of the second capacitor unit 20, the second conductor 40 having a second terminal 41 on the side opposite from the first capacitor unit 10 and the second capacitor unit 20; a case 50 inside of which the first capacitor unit 10 is housed so that the first terminal 31 and the second terminal 41 are led out to the outside; and a filling resin 60 that fills the interior of the case 50 so that the first capacitor unit 10 is buried. The positive-electrode side of the first capacitor unit 10 is electrically connected to the first conductor 30 by a first connection portion 32, the negative-electrode side of the first capacitor unit 10 is electrically connected to the second conductor 40 by a second connection portion 42, the positive-electrode side of the second capacitor unit 20 is electrically connected to the first conductor 30 at a position between the first terminal 31 and the first connection portion 32, the negative-electrode side of the second capacitor unit 20 is electrically connected to the second conductor 40 at a position between the second terminal 41 and the second connection portion 42, and at least the substrate 21 of the second capacitor unit 20 is immobilized by the filling resin 60.