65results about "Temperature compensation" patented technology

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.

To effectively dissipate heat generated in a multilayer electronic component to improve reliability of the multilayer electronic component.SOLUTION: One embodiment of the present invention provides a multilayer electronic component which includes: a body including a capacitance forming portion including a dielectric layer and internal electrodes, alternately arranged in a first direction, and cover portions disposed on both surfaces of the capacitance forming portion opposing in the first direction; and external electrodes disposed on the outside of the body and connected to the respective internal electrodes. The cover portions include a first dielectric material having a perovskite structure represented by general formula ABO3, and a first metal including one or more of Cu, W, Ag, and Zn. In at least a region of the cover portions, a content of the first metal is 2.0 moles or more and 9.0 moles or less, based on 100 moles of a B-site element.SELECTED DRAWING: Figure 2

Provided is an electronic component, and particularly a film capacitor, comprising a working element comprising a dielectric and an encasement with the working element encased in said encasement wherein the encasement comprises a phase change material.

The utility model discloses a laminated film capacitor module structure, and specifically relates to the film capacitor technology field, the laminated film capacitor module structure comprises a packaging layer, a housing assembly, a heat radiation layer and an electrode layer, the housing assembly is arranged below the packaging layer, the heat radiation layer is arranged in the packaging layer, the electrode layer is arranged below the heat radiation layer, and the electrode layer is arranged below the heat radiation layer. The device has the advantage of large capacitance, can store more electric energy, can provide stable electric energy output when a power supply fluctuates, ensures stable operation of a system, can adapt to more application scenes, can ensure the performance and stability of the system, and can be stable in a high-frequency circuit. The device has a wider application value in the field of electronic science and technology, also has the advantage of excellent heat dissipation performance, and can ensure the stable operation of the capacitor, thereby avoiding the performance reduction and fault of the capacitor caused by high temperature, and also prolonging the service life of the device.

The present invention discloses a busbar preparation method and a capacitor busbar prepared therefrom, which are used to prepare a busbar whose wiring terminals are perpendicular to a substrate and located in the middle of the substrate; the preparation method comprises: bending a copper plate into a wiring portion and a connecting portion, wherein the wiring portion is the same as a portion of the wiring terminal perpendicular to the substrate; the connecting portion is perpendicular to the wiring portion; at least one accommodating groove matching the connecting portion is provided on the substrate; the connecting portion and the accommodating groove are welded together at the connecting position thereof by laser welding; the present invention provides a busbar preparation method and a capacitor busbar prepared therefrom, which have a simple structure, a reasonable design and are easy to implement, solve the problem of difficulty in assembling the wiring terminals and the busbar substrate, greatly improve the welding production efficiency, and effectively reduce the scrap rate caused by unreliable welding.

To provide an electric apparatus in which temperature rise of a device is suppressed.SOLUTION: An electric apparatus comprises: a power supply bus bar; capacitors 100A, 100B; a metal housing 120; and heat dissipation members 131, 132. The power supply bus bar connects a power supply with electric components. The capacitors are connected to the power supply bus bar and to the ground. The metal housing comprises a bottom to which the capacitors are fixed and which is connected to the ground. The heat dissipation members have insulation properties and thermal conductivity higher than that of air. The capacitors comprise devices 31, 32, 33, 41, 42, 43 and capacitor bus bars 30, 40. The capacitor bus bars comprise first bus bars 50, 60; second bus bars 70, 80; and fixed bus bars 55, 65. The first bus bars connect the devices to the power supply bus bar. The second bus bars connect the devices to the ground. The fixed bus bars are fixed to the bottom. The heat dissipation members are provided between the fixed bus bars and the bottom.SELECTED DRAWING: Figure 3

Provided are a composite device for automotive electric parts and a manufacturing method thereof. The composite device includes: a multi-layered ceramic capacitor having a plurality of first and second internal electrodes alternately arranged; a multi-layered ceramic varistor having a plurality of third and fourth internal electrodes arranged to face each other, the multi-layered ceramic varistor being stacked on one side surface of the multi-layered ceramic capacitor; an adhesive layer made of an insulating heat dissipation ceramic adhesive for bonding the multi-layered ceramic capacitor and the multi-layered ceramic varistor; and first and second external electrodes which connect the plurality of first and second internal electrodes exposed to both end portions of the multi-layered ceramic capacitor with the plurality of third and fourth internal electrodes exposed to both end portions of the multi-layered ceramic varistor, respectively.

The present disclosure provides a capacitor capable of reducing unevenness in heat generation of a plurality of capacitor elements. The capacitor includes a first bus bar, a second bus bar, and a plurality of capacitor elements arranged in a first direction. Each of the plurality of capacitor elements includes an element body, a first electrode, and a second electrode. The first bus bar includes a first internal terminal connected to the first electrode, a first external terminal, and a first connection portion connecting the first internal terminal and the first external terminal. The first connection portion includes a side plate positioned on a side of the plurality of capacitor elements in a second direction orthogonal to the first direction. Among the plurality of capacitor elements, a capacitor element disposed farthest from the first external terminal in the first direction is disposed closest to the side plate of the first connection portion in the second direction.

An electric vehicle according to an exemplary aspect of the present disclosure particularly includes an electric motor electrically coupled to a battery pack via an inverter. Additionally, the inverter includes a capacitor having an internal cooling channel. A method is also disclosed.

The utility model discloses a power capacitor device with a built-in temperature adjusting device. The power capacitor device comprises a device shell, a circulating pump and a reciprocating power shell, the utility model relates to the technical field of capacitor equipment, and the device is specially designed for improving the operation stability of a plurality of capacitor main bodies in the device shell through the dual combination of a cooling oil cooling circulation structure and a reciprocating blowing cooling structure, and through the efficient heat dissipation system, even in a long-time operation process, the capacitor main bodies can be cooled to a certain degree. Meanwhile, heat accumulation can be effectively prevented, it is ensured that the working efficiency cannot be reduced due to overheating of the capacitor body, the potential risk possibly causing production accidents is fundamentally eliminated through the design, the operation of the power capacitor is more stable and reliable, and the safety is greatly improved.

The invention is applied to the technical field of capacitors, and discloses a power capacitor which comprises a base, a shell is arranged on the upper surface of the base, a core bag is arranged in the shell, the upper end of the core bag penetrates through the upper surface of the shell and is fixedly provided with a terminal, and an emergency cooling mechanism is arranged in the shell. And when the capacitor is overheated, the capacitor is rapidly and emergently cooled in an automatic triggering manner, so that the capacitor is prevented from being overheated and burnt. According to the power capacitor, when the capacitor is overheated, ammonium salt in the filling cavity is mixed with water in the storage plate to absorb heat of the surrounding environment, so that the effect of reducing the temperature is achieved, and the heat is conducted into the pressure cavity through the heat conduction rod to enable gas to expand; the expanded gas can enable the overflow hole to be aligned with the end part conduction hole and enable the central conduction hole to be aligned with the upper end of the overflow pipe in a manner of pushing the piston rod to slide, so that water can be automatically discharged to realize mixed reaction with ammonium salt.

The utility model discloses a capacitor, which enables a heat dissipation piece to be exposed outside resin to realize contact cooling with an external cooling source, the external cooling source can be directly contacted with a heating source of the capacitor, the cooling effect is remarkable, and the capacitor comprises a capacitor shell, the resin, a capacitor core, a first busbar, a second busbar and the heat dissipation piece, the accommodating cavity of the capacitor shell is filled with resin; the capacitor core is arranged in the accommodating cavity and is embedded in the resin; the first parts of the first busbar and the second busbar are arranged in the accommodating cavity, are embedded in the resin and are electrically connected with the upper surface and the lower surface of the capacitor core respectively; the second parts of the two are exposed out of the resin and are led to the side edge of the capacitor shell to serve as connecting terminals; the heat dissipation piece comprises an exposed part exposed out of the resin and a buried part buried in the resin; the exposed part is in direct contact with an external cooling source, and the buried part is fixedly connected with the first part of the first busbar; in a plan view, only part of the exposed part is overlapped with the capacitor core, and the rest part is closer to the connecting terminal of the first busbar.

The utility model discloses a capacitor which can meet the use requirements of heightening, heat insulation and electrode limiting. The capacitor comprises a first electrode, a second electrode and at least one insulating part of the capacitor; a first leading-out end of the first electrode and a second leading-out end of the second electrode are exposed out of the surface of the capacitor and are arranged in parallel up and down; the insulating part is arranged between the first leading-out end and the second leading-out end in a matched mode, the upper surface of the insulating part is provided with a slot for the first leading-out end to be inserted and matched, and the lower surface of the insulating part is matched with the second leading-out end in a positioning mode.

The present invention discloses an integrated heat dissipation easy-to-replace core low-inductance vehicle-mounted film capacitor, which relates to the field of capacitors and includes an integrated flow channel aluminum shell, one side of the integrated flow channel aluminum shell is evenly spaced along its length direction with upper and lower rows of capacitor core placement grooves, and a film capacitor core package is placed in the capacitor core placement groove; any pole of each film capacitor core package can be detachably connected to busbar one, and the other pole can be detachably connected to busbar two; busbar one and busbar two are respectively welded with DC side terminal one and DC side terminal two, and the AC sides of busbar one and busbar two are both led out with AC side terminals. The present invention packages a single film capacitor core and connects it to the busbar through bolts and nuts, and each film capacitor core package is isolated from each other and placed in an independent capacitor core placement groove, so that damage between film capacitor cores does not affect each other, and the film capacitor core is easy to disassemble and replace, reducing the replacement and maintenance costs.

This electric device is provided with a power supply bus bar, capacitors (100A, 100B), a metal housing (120), and heat dissipation members (131, 132). The power supply bus bar connects a power supply and an electric component to each other. The capacitors are connected to the power supply bus bar, and are also connected to the ground. The metal housing has a bottom to which the capacitors are fixed so as to be connected to the ground. The heat dissipation members have insulating properties and have a thermal conductivity higher than that of the air. The capacitors have elements (31, 32, 33, 41, 42, 43) and capacitor bus bars (30, 40). The capacitor bus bars have first bus bars (50, 60), second bus bars (70, 80), and fixed bus bars (55, 65). The first bus bars connect the elements and the power supply bus bar to each other. The second bus bars connect the elements and the ground to each other. The fixed bus bars are fixed to the bottom. The heat radiation members are provided between the fixed bus bars and the bottom.

In described examples, a heated capacitor (100) removes moisture from a moisture-sensitive insulating layer (114) of the heated capacitor (100) that lies between and touches a lower metal plate (112) and an upper metal plate (116) of the heated capacitor (100) with the heat that is generated by the resistance to a current that passes through or near the heated capacitor (100).

The present invention relates to the technical field of ceramic capacitors, and particularly relates to a composite ceramic capacitor with a positive temperature coefficient, which includes a high-voltage conductive rod. The high-voltage conductive rod has a cylindrical structure, and a support flange is coaxially installed on the outer side of the high-voltage conductive rod. Ceramic capacitor elements are installed in parallel on the support flange. By installing ceramic capacitor elements in parallel on the support flange outside the high-voltage conductive rod, the present invention significantly reduces the overall temperature coefficient of the composite ceramic capacitor while improving the strength of the composite ceramic capacitor.

A multilayer ceramic electronic component includes a ceramic body having a plurality of dielectric layers and a plurality of internal electrodes disposed with the dielectric layers interposed therebetween. An external electrode is disposed on the outside of the ceramic body. A coating layer is formed on at least a portion of an outer surface of the ceramic body and includes a water-repellent coating agent and at least one of a heat stabilizer that removes free radicals generated from the water-repellent coating agent, and an antioxidant that decomposes a free radical forming factor. The coating layer improves moisture resistance reliability and durability of the component during thermal and environmental stress.

The invention relates to an intermediate circuit capacitor for a power electronic assembly, comprising: at least one capacitor element which is designed to store an electrical charge in an electric field; a first distribution element having a first transistor connection, a first battery connection and a first contact plate, the first contact plate electrically contacting the capacitor element on a first side; and a second distribution element having a second transistor connection, a second battery connection and a second contact plate, the second contact plate electrically contacting the capacitor element on a second side, the first contact plate and the second contact plate being oriented parallel to each other, the first contact plate being arranged in the first side, and the second contact plate being arranged in the second side. The first battery terminal is connected to the first contact plate by means of a first connection section.

A capacitor device (5) includes a capacitor (30), a capacitor bus bar (29), and a heat dissipation bus bar (26). The capacitor bus bar (29) has a first end electrically connected to the capacitor and a second end electrically connected to an electrical component, and extends in the direction in which the capacitor and the electrical component are aligned. The heat dissipation bus bar (26) has an end portion disposed on the capacitor bus bar without the end portion interrupting the capacitor bus bar in the extending direction of the capacitor bus bar, and dissipates heat from the capacitor. Therefore, it is possible to suppress an increase in the inductance of the capacitor bus bar while improving the heat dissipation performance of the capacitor.

To provide a capacitor which can reduce variation in heat generated by a plurality of capacitor elements.SOLUTION: A capacitor 1 comprises: a plurality of capacitor elements 2 aligned in one direction; a first bus bar 31; and a second bus bar 32. Each of the plurality of capacitor elements 2 includes an element body 20, a first electrode 21, and a second electrode 22. The first bus bar 31 includes: a first internal terminal 41 connected to the first electrode 21; a first external terminal 51; and a first coupling part 61 which couples the first internal terminal 41 to the first external terminal 51. The first coupling part 61 includes a side plate 601 which is located on the lateral side of the plurality of capacitor elements 2. The second bus bar 32 includes: a second internal terminal 42 connected to the second electrode 22; a second external terminal 52; and a second coupling part 62 which couples the second internal terminal 42 to the second external terminal 52. The capacitor element 2 farthest from the first external terminal 51 is disposed at a position closest to the side plate 601 of the first coupling part 61.SELECTED DRAWING: Figure 4

A film capacitor including a core, a plurality of film layers wrapped around the core, and at least one first spacer arranged between two first film layers of the plurality of film layers, wherein an interstice configured outside of a spacer cross-section is provided between the two first film layers by the at least one first spacer.

The utility model discloses a heat dissipation enhancement type capacitor, comprising a housing which is provided with an accommodating cavity with an opening at one end, and the side wall of one side of the housing is a cooling surface; the at least one capacitor core is arranged in the accommodating cavity, the capacitor core comprises a first end surface and a second end surface, and the first end surface is arranged close to the cooling surface; the extraction electrodes comprise a first electrode and a second electrode, the first electrode is connected to the first end face and is led out of the shell, and the second electrode is connected to the second end face, extends to the position between the first electrode and the inner side wall of the shell and is led out of the shell; and the insulating film is arranged in a region where the first electrode and the second electrode are stacked. According to the technical scheme of the embodiment of the utility model, a better heat dissipation effect can be obtained, and the current resistance of the thin film capacitor is further improved.

A device for online detection of the operating state of wind turbine transformer capacitors, characterized by: a passive wireless temperature measuring device comprising a passive wireless temperature sensor (2) used to detect the temperature of the capacitor (1), the passive wireless temperature sensor (2) being set via a fixing on the circumferential side of the capacitor (1), the passive wireless temperature sensor (2) receiving a stimulation signal and converting the stimulation signal into a linear resonance signal associated with the temperature change; a temperature signal acquisition device used to send a stimulation signal to a passive wireless temperature measuring device and receiving the temperature response signals output by a passive wireless temperature measuring device, the temperature information is acquired and output based on a change in the frequency of the temperature response signal; a temperature monitoring device used to receive temperature signals, output temperature information, and perform monitoring processing.

To provide multilayer ceramic electronic components that are miniaturized, have high capacity, and ensure moisture resistance reliability. [Solution] The disclosed multilayer ceramic electronic component includes a ceramic body comprising a plurality of dielectric layers and a plurality of internal electrodes arranged sandwiching the dielectric layers, an external electrode arranged outside the ceramic body, and a coating layer arranged on at least a portion of the outer surface of the ceramic body, wherein the coating layer comprises a water-repellent coating agent and at least one of a thermal stabilizer that removes free radicals generated from the water-repellent coating agent and an antioxidant that decomposes the free radical formation factors.

The invention relates to the technical field of ceramic capacitors, in particular to a positive temperature coefficient combined ceramic capacitor which comprises a high-voltage conducting rod, the high-voltage conducting rod is of a cylindrical structure, a supporting flange is coaxially installed on the outer side of the high-voltage conducting rod, and ceramic capacitor elements are installed on the supporting flange in parallel. The ceramic capacitor elements are installed on the supporting flange on the outer side of the high-voltage conducting rod in parallel, the strength of the combined ceramic capacitor is improved, and meanwhile the overall temperature coefficient of the combined ceramic capacitor is remarkably reduced.

A DC link capacitor includes a lower busbar, an upper busbar, a cooling structure, and a plurality of structurally identical capacitor elements which are arranged between the lower busbar and the upper busbar and in electrical contact with the lower busbar and the upper busbar. The capacitor elements are spaced from each other in a longitudinal direction and in a transverse direction and are in thermally conductive contact with the cooling structure. The cooling structure includes thermally conductive element connected in a materially bonded manner to one of the lower busbar and the upper busbar. An active or passive cooling means is connected to an outer surface of one of the lower busbar and the upper busbar.

The invention relates to a DC link capacitor module (1) comprising: - at least one capacitor cell (2) comprising a capacitor element (3), - a housing (7) forming a cup (8), the at least one capacitor cell (2) being at least partially pushed into the cup (8), - a fluidtight cover (9) comprising an end wall (10) and a peripheral wall (11), the fluidtight cover (9) covering the capacitor element (3), - a protective resin (12), poured into the cup (8), wherein a first part of the at least one capacitor cell (2) is immersed in the protective resin (12) over a first height (13) and a second part of the at least one capacitor cell (2), distinct from the first part, is out of the protective resin (12) over a second height (14), and the peripheral wall (11) comprising an uninterrupted end zone (15) that is immersed in the protective resin over a third height (16) so that the second part of the at least one capacitor cell (2) is protected in a fluidtight manner by the fluidtight cover (9). The invention also relates to a voltage converter equipped with such a DC link capacitor module (1) and to a method for manufacturing such a DC link capacitor module (1).