546results about "Multiple fixed capacitors" patented technology

The invention discloses a high-voltage multi-core ceramic capacitor and a preparation method thereof, and the multi-core ceramic capacitor comprises a pedestal, two connection frames which are oppositely disposed on the pedestal, and a plurality of capacitor modules which are sequentially arranged in the length direction of the connection frames. The capacitor module comprises a plurality of capacitors which are sequentially connected in series between two connecting frames and a plurality of series connecting sheets which are respectively arranged between two adjacent capacitors, and the connecting frames are connected with the opposite capacitors; the capacitor comprises a capacitor body, two parallel frames oppositely arranged on the two sides of the capacitor body, a potting shell used for installing the capacitor body and a potting layer arranged in the potting shell and wrapping the capacitor body. The specific structure of the capacitor module is limited to be matched with the connecting frame, so that parallel capacity increasing and series voltage dividing of the multiple capacitor chips are achieved, other capacitor modules are not affected after a certain capacitor module fails, and the market requirement of higher-voltage products is met.

Via array configurations for metal-insulator-metal (MIM) capacitor structures are disclosed herein. An exemplary MIM capacitor structure includes a capacitor bottom metal layer, a first dielectric layer over the capacitor bottom metal layer, a capacitor middle metal layer over the first dielectric layer, a second dielectric layer over the capacitor middle metal layer, and a capacitor top metal layer over the second dielectric layer. A metal via array, which has a first metal via and a second metal via, is connected to the capacitor top metal layer and the capacitor bottom metal layer. A portion of the capacitor top metal layer covers an area of the second dielectric layer extending from the first metal via to the second metal via. From a top view, the portion of the capacitor top metal layer surrounds the first metal via and the second metal via.

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

A 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.

Certain embodiments provide a capacitor module with flexible busbar contacts for a traction inverter system of an electric vehicle. The capacitor module may include a housing, capacitors, and capacitor busbar contacts coupled to the capacitors. Each capacitor busbar contact may include a flexible portion and a contact portion configured to be attached to a respective power inverter module busbar contact. The flexible portion and the contact portion are disposed outside the housing. The flexible portion is configured to bend to reduce or close an air gap between the contact portion and a respective power inverter module busbar contact when a force is applied to the contact portion prior to attachment. In some embodiments, the contact portion is laser welded to the respective power inverter module busbar contact, and a clamp applies the force to the contact portion prior to laser welding.

Power converter (1) with: a switching circuit (20); a capacitor module (3) which is electrically connected to the switching circuit; an auxiliary capacitor module (5) connected in parallel to the capacitor module; and a device housing (12) which contains the switching circuit, the capacitor module and the auxiliary capacitor module, wherein The capacitor module includes: a capacitor element (31), a capacitor housing (32) that contains the capacitor element, an encapsulation resin (33) that encapsulates the capacitor element in the capacitor housing, and a capacitor busbar (4) which connects the capacitor element to a power terminal of the switching circuit, wherein the capacitor busbar includes: an element connection section (41) that is connected to the capacitor element within the encapsulation resin, a connecting section (42) which is connected to the power connection outside the encapsulation resin, and a power supply connection section (43) which is connected to a power supply wiring (54) outside the encapsulation resin, wherein the power supply wiring is electrically connected to a DC power supply, wherein the capacitor busbar includes a DC path (44) which represents a current path between the terminal connection section and the power supply connection section, and the DC path is exposed to the outside of the encapsulation resin, the auxiliary capacitor module is connected to the power supply connection section of the capacitor busbar, the auxiliary capacitor module is detachably attached to the power supply connection section by means of a fastening element (11), and a fastening direction of a fastening element (135) that secures the auxiliary capacitor module and a fastening direction of the fixing element are the same.

Provided are: at least one cylindrical power storage device (20); and an upper holder (30) that holds an upper end side of the power storage device, a positive electrode terminal (26) and a negative electrode terminal (25C) being disposed at an upper end portion of the power storage device, the negative electrode terminal being disposed at a position that is more outward in a radial direction of the power storage device than the positive electrode terminal, and a negative electrode lead (50) that is connected to the negative electrode terminal from an outer side in the radial direction, the upper holder having a restriction portion (34) that is located at a position that is more inward in the radial direction than at least a portion of the negative electrode lead.

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

The utility model discloses a power capacitor device with an improved heat dissipation structure. The power capacitor device comprises a device shell, a plurality of power capacitor bodies and a gathering power shell. The utility model relates to the technical field of electrical auxiliary equipment, and the device realizes efficient heat dissipation management of a plurality of power capacitor main bodies running in the device shell through a split position adjusting blowing and pressing structure, and once the power capacitor main bodies are detected to be abnormal in heating, the power capacitor main bodies can be cooled. According to the device, a plurality of synchronous displacement modules and blowing air nozzles carried by the synchronous displacement modules can be rapidly adjusted to be gathered together, compressed air is blown downwards in a concentrated mode, heat diffusion is rapidly suppressed, meanwhile, a continuously-circulating horizontal air channel is constructed in the device through a pair of first fans which efficiently operate, and the heat dissipation efficiency is improved. The design ensures that a large amount of heat released by the power capacitor main body can be quickly and effectively taken away, so that the operation stability and safety of the power capacitor main body are greatly improved.

A capacitor includes a first capacitor element, a second capacitor element, a first anode terminal plate, a second anode terminal plate, a first cathode terminal plate, a second cathode terminal plate, and a resin part. The second capacitor element is adjacent to the first capacitor element in a second direction orthogonal to a first direction. The first capacitor element includes a first outer lead part of a first anode lead and a first cathode that are disposed side by side in this order in the first direction. The second capacitor element includes a second cathode and a second outer lead part of a second anode lead that are disposed side by side in this order in the first direction. The first outer lead part overlaps the second cathode at side view in the second direction. The second outer lead part overlaps the first cathode at the side view.

The application discloses a double-effect shielding thin-film capacitor and belongs to the technical field of capacitors. The double-effect shielding thin-film capacitor comprises an integrally-formed bottom plate and a wrapping shell, and further comprises a magnetic shielding support and an electrostatic shielding support which are arranged in the wrapping shell respectively for electrostatic and magnetic shielding, the magnetic shielding support is embeddedly installed in the electrostatic shielding support, the magnetic shielding support is composed of a lower shielding plate and an upper shielding plate, the electrostatic shielding support is composed of an upper support, a lower support and a connecting rod, the upper support and the lower support are connected through the connecting rod, in the embeddedly-installed magnetic shielding support and electrostatic shielding support, the position of the upper shielding plate is lower than that of the upper support, and the position of the lower shielding plate is lower than that of the lower support, and the magnetic shielding support and the electrostatic shielding support are provided with heat dissipation wrapping cavities, and a plurality of capacitor cores are arranged in the heat dissipation wrapping cavities. The application can ensure the stable operation of the thin-film capacitor in a complex and changeable electromagnetic environment.

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.

A capacitor assembly is assembled on a system substrate. The capacitor assembly includes a capacitor, a first conductive plate, an insulating plate, and a second conductive plate, which are stacked sequentially. The capacitor includes a first lead and a second lead, which are electrically connected to the first conductive plate and the second conductive plate, respectively. The first conductive plate includes a first insertion portion, and the second conductive plate includes a second insertion portion. The capacitor assembly is inserted into the system substrate through the first and second insertion portions, thereby electrically connecting the entire capacitor assembly to the system substrate. The material properties of the first and second conductive plates reduce conductivity and improve thermal conductivity, further enhancing the utilization rate of the capacitor within the capacitor assembly's area.

A self-cooling high-capacity power capacitor disclosed by the present invention comprises a hexagonal seat and a metal heat dissipation frame installed on six surfaces of the hexagonal seat, a butt joint groove is formed in one end, close to the hexagonal seat, of the interior of the metal heat dissipation frame, and a capacitor unit inserted into the butt joint groove is inserted into the interior of the metal heat dissipation frame. And the metal heat dissipation frame is internally provided with a backstepping mechanism for backstepping the capacitor unit. The six metal heat dissipation frames are annularly and radially distributed by arranging the hexagonal seats, independent heat dissipation of each capacitor unit is achieved, mutual interference is reduced, self-cooling type heat dissipation of the capacitor units is achieved by means of the efficient heat conduction and heat dissipation efficiency of the metal heat dissipation frames, the heat dissipation effect is guaranteed, meanwhile, the equipment structure is more concise and compact, and the service life of the equipment is prolonged. And enough heat dissipation space is reserved between the adjacent metal heat conduction frames, so that the problem of heat accumulation between matrix type installation intervals is avoided, and the overall heat dissipation effect is improved.

The invention relates to the technical field of thin-film capacitors, in particular to a standardized and modularized thin-film direct-current support capacitor which can reduce design complexity and cost budget, is convenient to combine and expand, can operate in a high-temperature environment and is high in applicability, and the standardized and modularized thin-film direct-current support capacitor comprises a capacitor unit and a busbar. Each capacitor unit comprises a capacitor shell and a core arranged in the capacitor shell, clamping groove structures matched with each other are arranged on two sides of the outer wall of the capacitor shell, a positioning groove is formed in the inner wall of the capacitor shell, and a lead-out pin of the capacitor unit penetrates through the positioning groove; the film base film of the core is formed by mixing and co-extruding 70%-80% of polypropylene and 20%-30% of cycloolefin copolymer.

A device according to some embodiments includes a first IPD die including a first SiC substrate. The first IPD die has a first surface and a second surface on the first SiC substrate opposite the first surface and includes a first contact and at least one first metal portion on the respective surfaces of the first SiC substrate. The device further includes a second IPD die including a second SiC substrate. The second IPD die has a third surface and a fourth surface on the second SiC substrate opposite the third surface and includes a second contact and at least one second metal portion on the respective surfaces of the second SiC substrate. The device further includes an electrical interconnection structure between one of the first and second surfaces of the first IPD die and one of the third and fourth surfaces of the second IPD die.

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).

The utility model discloses a new energy automobile battery swap station's PCB board 4 pin film capacitor, including plastic shell and the capacitor body of encapsulation in plastic shell, capacitor body includes the capacitor core that is composed of multiple single core and the laminated busbar that is connected with capacitor core through soldering tin, and the laminated busbar is connected with two outgoing terminals, and each outgoing terminal has two parallel interval opposite pins and the connecting portion of connecting two pins, and the connecting portion is integrally formed with two pins and is combined into U shape, and the pin stretches out plastic shell outside, and the connecting portion of each outgoing terminal is welded and connects the laminated busbar. Through setting laminated busbar, U type outgoing terminal, multiple core combination arrangement capacitor core in the inside of plastic shell, the soldering connection process that laminated busbar is used with electric core, makes capacitor presents high stable ESL, ESR parameter on high frequency resonance road, and the current capacity of capacitor improves self heating little, and circuit output high quality steady voltage waveform.

The present invention relates to a capacitor, in particular an intermediate circuit capacitor, comprising a first capacitive unit and a second capacitive unit, a first electrode with a first electrical conductor and a second electrical conductor, a second electrode with a third electrical conductor, wherein the first capacitive unit and the second capacitive unit are arranged side by side and separated from each other by a gap, wherein the first electrical conductor is configured to electrically contact the first capacitive unit at a first top surface, wherein the second electrical conductor is configured to electrically contact the second capacitive unit at a second top surface, and wherein the third electrical conductor is configured to electrically contact the first capacitive unit at a first bottom surface and the second capacitive unit at a second bottom surface.wherein the second electrical conductor is arranged in the gap between the first capacitive unit and the second capacitive unit in order to prevent the propagation of electromagnetic waves between the first capacitive unit and the second capacitive unit.

One example discloses an electrical device comprising: a first capacitor comprising a conductive plate; wherein the conductive plate has a first edge radius and a second edge radius; and wherein the first edge radius is different than the second edge radius.

The disclosure provides a thin film capacitor assembly and a motor controller, and belongs to the technical field of motors. The thin film capacitor assembly comprises a plurality of cooling pipes, a plurality of columns of silicon carbide single pipes and a plurality of columns of capacitor cores. The plurality of cooling pipes are arranged side by side, and a cooling channel is formed between adjacent two cooling pipes, and the cooling pipes have cooling liquid. Each column of silicon carbide single pipes is located in a cooling channel, and each column of capacitor cores is located in a cooling channel, and the silicon carbide single pipes and the capacitor cores are located in different cooling channels. In this way, the heat dissipation effect inside the thin film capacitor assembly can be better, the temperature of the thin film capacitor assembly can be prevented from being too high, and the temperature resistance of the thin film capacitor assembly can be improved.

The utility model discloses a large-current large-capacity direct current support capacitor, which comprises a shell, a capacitor core module and a leading-out terminal, the capacitor core module comprises an absorption capacitor core group and a thin film capacitor core group, the absorption capacitor core group and the thin film capacitor core group are respectively provided with a plurality of capacitor core single groups which are respectively arranged in an array, and the leading-out terminal is connected with the absorption capacitor core group and the thin film capacitor core group. The absorption capacitor core group is positioned above the thin-film capacitor core group; electrodes at the two ends of the capacitor core module are respectively welded in parallel through a plurality of sub-copper plates, the upper ends of the sub-copper plates are connected with the laminated busbar, the leading-out terminal is arranged on the laminated busbar and extends out of the top of the shell, and the capacitor core module, the sub-copper plates and the laminated busbar are packaged in the shell through a potting material. According to the structure that the wire inlet end of the large-current large-capacity direct-current support capacitor is connected with the absorption capacitor in parallel to share high-frequency harmonic current, current impact can be borne under the condition that current distribution is not uniform, and heating breakdown failure is avoided.

A trench capacitor includes a plurality of unit trench capacitors arranged in a 2D repetitive pattern in a substrate. The unit trench capacitors are separated by elongated trenches or elongated walls between the unit trench capacitors. The trench capacitor includes a plurality of stress compensation elements. Each unit trench capacitor has one or more closed trenches, with each trench further having a bottom electrode, a top electrode, and a dielectric between the bottom electrode and the top electrode. The unit trench capacitors are connected in parallel and the stress compensation elements are arranged between the unit trench capacitors such that they interrupt the elongated walls or trenches.

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.

To provide a method for solving the problem of a low capacitance value at high voltage in a tunable multilayer capacitor.SOLUTION: A multilayer capacitor comprises a first active electrode 14 in electrical contact with a first active termination 16, and a second active electrode 20 in electrical contact with a second active termination 18. The capacitor comprises a first DC bias electrode 22 in electrical contact with a first DC bias termination 30, and a second DC bias electrode 26 in electrical contact with a second DC bias termination 32. Multiple dielectric layers 12 are disposed between the first and second active electrodes and between the first and second bias electrodes. At least a portion of the dielectric layers contains a tunable dielectric material that exhibits a variable dielectric constant upon application of an applied DC voltage across the first and second DC bias electrodes. The thickness of at least one of the multiple dielectric layers is greater than about 15 micrometers.SELECTED DRAWING: Figure 2A

This invention relates to a parallel-structure capacitor and its fault repair method. In the parallel-structure capacitor, at least one capacitor branch has a variable resistor connected in series with the capacitor unit. The variable resistor comprises a phase change material. The resistance of the variable resistor increases when the phase change material changes from a crystalline state to an amorphous state. When a short-circuit fault occurs in a capacitor branch with a variable resistor, the resistance can be increased by changing the phase change material from a crystalline state to an amorphous state, thereby changing the short-circuit state of the corresponding capacitor branch and achieving fault repair. Furthermore, the variable resistor does not require additional substrate area, eliminating the need for metal fuses, avoiding cumbersome manufacturing processes, and preventing impacts on product design and miniaturization, thus contributing to improved product yield and production efficiency. The fault repair method for the parallel-structure capacitor provided by this invention has similar advantages to the aforementioned parallel-structure capacitor.

The application relates to the technical field of capacitor assembly, and provides a conductive connection structure of a capacitor pole and a laminated busbar, which comprises a capacitor, a laminated busbar and a first connecting piece.The capacitor comprises a first pole and a second pole;the laminated busbar comprises a first busbar, a second busbar and at least one insulating layer; the at least one insulating layer is arranged between the first busbar and the second busbar, so that the first busbar and the second busbar are electrically isolated; the laminated busbar is provided with a first connecting hole and a second connecting hole; the first pole is arranged in the first connecting hole; and the second pole is arranged in the second connecting hole.The application effectively solves the problems of creep loosening and copper-aluminum electrochemical corrosion, improves the anti-vibration and anti-fatigue performance of the connection structure, maintains a stable conductive path, reduces contact resistance, and reduces power loss in the current transmission process.