96results about How to "Increase the rated current" patented technology

The present invention provides a method and apparatus for allocating current (20) from a distributor (22), having a maximum rated current, among a plurality of load circuits (24), including a variable load circuit (24_α) that benefits from a full load current allocation but is operable at a lower current allocation. The invention provides for measuring the instantaneous current reserve of the distributor (22) as the maximum rated current of the distributor (22) less the instantaneous current flowing from the distributor (22) to the plurality of load circuits (24), and limiting the instantaneous current of the variable load circuit (24_α) to the full load current of the variable load circuit (24_α) if the instantaneous current reserve is greater than zero, and the sum of the full load current of the variable load circuit (24_α) plus the instantaneous current reserve, if the instantaneous current reserve is less than or equal to zero.

The invention relates to a high-voltage vacuum breaker for high rated current. Wherein, the vacuum arc-extinguish chamber pole includes the ceramic sleeve for insulation to accommodate the chamber, a static conductive pole on one chamber end with an upper conductive ring and flange, a movable pose on another end with an lower conductive ring and conductive support with lower flange, two wire terminals on sleeve to connect former conductive rings; a first and second radiator near two flanges respectively; some insulation oil for heat dissipation between the sleeve and chamber and the support; and one or some holes on static pole to insert heat pipe.

The full-scale fuse element assembly includes an insulative bobbin having opposing first and second ends and a conductive connector coupled to the ends of the bobbin. A plurality of fuse elements extend around the insulating bobbin between the first connector and the second connector, and each fuse element includes a weak current interrupting fuse element portion extending from the first connector and a fuse element portion extending from the second connector. The part of the high current limiting fuse element that extends from the connector. An insulating bushing surrounds each part of the fuse element that interrupts the weak current, and each bushing includes an end portion adjacent to the high-current limiting fuse element. Each weak current interrupting fuse element portion includes a weak melting point adjacent the second end of the respective bushing.

The invention firstly aims to provide a cascading inductor based on metal magnetic slurry. The cascading inductor comprises a first base body, an interlayer and a second base body, wherein the first base body, the interlayer and the second base body are arranged from bottom to top. The interlayer comprises at least two single-layers arranged from bottom to top. Each single-layer comprises a dielectric layer, a packing layer and a coil electrode, wherein the dielectric layer is provided with a through hole in the vertical direction; the packing layer is arranged at the through hole, and the upper surface of the packing layer is not lower than the upper surface of the dielectric layer; the coil electrode is arranged on the upper surface of the dielectric layer and located around the packing layer; the packing layer comprises inorganic powder bodies composed of metal magnetic powder, lead-free glass powder, organic carriers and auxiliaries. The cascading inductor based on the metal magnetic slurry is simple in overall structure; since the packing layers are made of metal alloy materials with high saturation flux density, the saturation magnetization intensity of the whole cascading inductor is improved, and then the rated current is increased. The invention secondly aims to provide a preparation method of the cascading inductor based on the metal magnetic slurry. By means of the preparation method, the process steps are simple, the cost is low, and the cascading inductor is quite suitable for large-scale batch production.

The invention provides an electronic type leakage circuit breaker, which comprises a shell. A partition plate arranged in the shell divides the shell into two layers of cavities. The two layers of cavities are composed of a first cavity and a second cavity. The first cavity is used for placing an L-pole circuit breaker module. The second cavity is used for placing an N-pole circuit breaker module and a leakage protection module of the electronic type leakage circuit breaker. Therefore, the internal space of a product is fully utilized. Meanwhile, through improving the rated current, the high temperature rise and other unqualified phenomena can be avoided. Therefore, the safe current-carrying capacity of the electronic type leakage circuit breaker is ensured, and the rated current of the electronic type leakage circuit breaker reaches 63A.

Provided is a multilayer chip inductor. The multilayer chip inductor comprises a first cover body, a middle layer and a second cover body, wherein the first cover body, the middle layer and the second cover body are stacked in sequence, the middle layer comprises a lead layer which is stacked in a parallel mode, and more than two dielectric layers, electrode coils are printed on the dielectric layers, wires of the electrode coils on every two adjacent dielectric layers are distributed in a parallel and parallel connection mode, and the lead layer is close to the first cover body or the second cover body. The rated current of the multilayer chip inductor can be greatly increased, and the multilayer chip inductor can be widely applied to electronic devices such as computers and communication machines.

The invention provides an analog double-cell management method and a corresponding management circuit. The management circuit comprises a plurality of power supply modules, an output end, a selective control unit, a plurality of feedback units and an isolation unit, wherein each power supply module comprises an input end, an output end and a control end, and the input end is connected with cells; and the power supply modules, the selective control unit, the plurality of the feedback units and the isolation unit are achieved through analog circuits. The analog double-cell management method and the circuit thereof have the advantages that selection management of power supply of two cells in double-cell power supply equipment is achieved through the analog circuits, compared with the existing double-cell management technology achieved by digital circuits, response time is shorter, the rated current is larger, and the application of double-cell power supply equipment which has high requirement for response time and/or control current becomes possible.

An exemplary high-voltage bushing has a conductor and a core surrounding the conductor, wherein the core includes a sheet-like spacer, which spacer is impregnated with an electrically insulating matrix material. The spacer can have a multitude of holes that are fillable with the matrix material. The spacer can be net-shaped or meshed. It can be a net of fibers. The bushing can be a fine-graded bushing with equalizing plates within the core. As a matrix material, a particle-filled resin can be used.

A panelboard supplies electricity to multiple loads, such as lighting fixtures and/or other electrical devices via one or more high-amperage circuit breakers and one or more low-amperage circuit breakers. The panelboard includes one or more vertical busbars and one or more horizontal busbars coupled together in a single housing. The one or more horizontal busbars are coupled to a main input breaker that receives electricity from a source. The main input breaker distributes the electricity to the horizontal busbars. The horizontal busbars distribute the electricity to the high-amperage circuit breakers coupled thereto and to the vertical busbars. The vertical busbars distribute the electricity to the low-amperage circuit breakers coupled thereto.

The invention relates to the technical field of semiconductors, and discloses a silicon carbide Schottky diode for optimizing heat distribution and a method for manufacturing the same. A cathode motor, an N-type silicon carbide substrate, an N-type epitaxial lay and an anode electrode are sequentially arranged from bottom to top; the upper surface of the N-type epitaxial layer is formed with a current suppressing region in the middle, A plurality of second P-type well regions are spaced apart in the current suppression region, and a plurality of first P-type well regions are spaced apart on anupper surface of an N-type epitaxial layer around the current suppression region, wherein the area proportion of the second P-type well regions in the current suppression region is larger than that of the first P-type well regions on the chip-removed current suppression region. By reducing the current density in the center of the chip, the invention obviously reduces the temperature in the centerof the chip, so that the temperature distribution of the chip is uniform and the rated current of the device is improved.

The invention provides a novel permanent-magnet composite magnetic field contact structure and a vacuum arc-extinguishing chamber employing the same. The contact structure comprises a pair of transverse magnetic field contact blades and a pair of permanent-magnet composite structures, wherein the pair of permanent-magnet composite structures is arranged at the back of the transverse magnetic field contact blades; a magnetic field is generated by a contact gap after static-end permanent-magnet groups and running-end permanent-magnet groups are coordinated with each other; and the magnetic fields generated by a static-end transverse magnetic field contact blade and a running-end transverse magnetic field contact blade in an arcing process act on an electric arc, so that effective control on the electric arc is achieved. According to the novel permanent-magnet composite magnetic field contact structure and the vacuum arc-extinguishing chamber, the problems that the structure of the contact surface is too complicated and the electric arc control ability of a permanent magnet is limited in existing composite magnetic field contact structure and permanent-magnet contact structure are solved.

The invention provides an intelligent circuit breaker combined device. A current detecting piece is arranged in a circuit breaker. The current value of a circuit in the circuit breaker is obtained through the current detecting piece and then sent into a controller of an intelligent control device on one side of the circuit breaker, and the controller makes a judgment according to the received current value, and controls and starts an action mechanism to drive the circuit breaker to be released when the current value is in an overload state for a period of time. Because the current value of the circuit in the circuit breaker is directly tested and the controller is used for intelligent control, the problem that a thermal releaser is prone to fails caused by the external environment air temperature influences is solved. Meanwhile, due to the fact that the thermal releaser is omitted, the internal resistance of the circuit breaker is greatly reduced, and the power consumption and the heating amount of the circuit breaker are reduced. In addition, the controller is independently arranged in the intelligent control device outside the circuit breaker, the problem that a controller can not be put in a narrow space of a circuit breaker is solved, and meanwhile it can be avoided that the work of a controller is influenced by strong current.

The invention relates to a stranded wire-type elastic contact pin. The metal wires in a central layer comprises at least two metal wires; the enveloped cross sections of the metal wires of each layer are circular and the metal wires of the adjacent layers are attached tightly; at least one layer of metal wires has the stranding direction opposite to stranding direction of other layers of metal wires; the stranding direction of the outermost layer of metal wires is opposite to that of the adjacent layer of metal wires; the helical angles of the metal wires in the outer layers are less than helical angles of the metal wires in the inner layers; the length of the stranded wire-type elastic contact pin is greater than or equal to the helical pitch of the outermost layer of metal wires; the external diameter D of the maximum fat point is 1.3-1.9 times of the external diameter d of the contact pin; and the fat point span L is 2.2-3.8 times of the external diameter d of the contact pin. According to the invention, the stranded wire-type elastic contact pin has little engaging force so that a multi-core connector can be manually inserted or separated very easily. Therefore, the stranded wire-type elastic contact pin can be used for multi-core connectors.

The invention relates to a high-voltage vacuum breaker for high rated current. Wherein, the vacuum arc-extinguish chamber pole includes the ceramic sleeve for insulation to accommodate the chamber, a static conductive pole on one chamber end with an upper conductive ring and flange, a movable pose on another end with an lower conductive ring and conductive support with lower flange, two wire terminals on sleeve to connect former conductive rings; a first and second radiator near two flanges respectively; some insulation oil between the sleeve and chamber and the support; some evaporation holes on static pole supported by stainless steel, some refluence holes under evaporation holes, and some liquid working medium.

The invention relates to a large-current miniature circuit breaker, which comprises a shell. An operating mechanism, a plastic lock catch support, a tripping mechanism, a moving contact, a fixed contact, an arc extinguishing chamber and a bimetal sheet are arranged in the shell. Wiring terminals are respectively arranged on the two sides of the internal part of the shell. The plastic lock catch support is hinged in the shell. The plastic lock catch support comprises a lock catch part which is matched with the operating mechanism and an instantaneous tripping part which is matched with the tripping mechanism. The tripping mechanism comprises an electromagnetic induction element and an armature. The electromagnetic induction element is matched with the bimetal sheet. The armature is fixedly arranged at the instantaneous tripping part of the plastic lock catch support and is matched with the electromagnetic induction element. By adopting the technical scheme, the large-current miniature circuit breaker has the effects that the structure is simple, the cost is lower, and the breaking capacity and the rated current are greatly improved.

The invention discloses a quick fuse for protection of semiconductor devices, which comprises a fusion tube, a plurality of fusion sheets, arc extinguishing media and a pair of contact plates. A cavity is axially arranged on the central end face of the fusion tube, a solder bridge is arranged on the surface of each fusion sheet, multicolumn large holes are uniformly arranged at intervals on the surface of the each fusion sheet, small holes in column are arranged beside each column of large holes, each column of large holes comprises a plurality of large-diameter holes with same sizes, and each column of small holes comprises a plurality of small-diameter holes with same sizes. The large holes in column close to the length center of the corresponding fusion sheet are transverse elongated holes, and another column of small holes is further arranged between the column of elongated holes and the column of small holes close to the elongated holes. Each fusion sheet is bent into a square wave shape with center lines of the large holes in column and the small holes in column serving as folding lines, and then inserted into the cavity of the fusion tube after being enclosed into a shape with an open equilateral polygonal section. The arc extinguishing media are filled between a cavity of each fusion sheet and the corresponding fusion sheet, and the contact plates in pair are fastened to two ends of the fusion tube.

The invention discloses a chip type power inductor and a manufacturing method thereof. The inductor comprises a substrate, an inductance coil, a terminal stud and a dielectric layer, wherein the inductance coil is arranged in the substrate in a stacking manner, and both ends of the inductance coil are respectively connected with the terminal stud; and the dielectric layer is arranged in the substrate and separates the power inductor into an upper layer and a lower layer. After the inductor is formed by adopting a casting process and a lining electrode printing process, a finished product is manufactured through low temperature cofiring. Through the special air gap action of the dielectric layer, the characteristics of the stacking inductor are improved, and the DC bias characteristic and the flow resistance characteristic of the stacking power inductor are increased. Compared with a wound power inductor, the stacking power inductor is easier to reduce element size and thickness. The chip type power inductor is applicable to the development of new electronic elements, fills up the national blankness on such components, and has innovation in the aspects of materials, design, processes, measurement and the like. The product has advanced design, a self-developed process route is adopted, and the performance of the product can reach the international advanced level.

A circulating preheater with single cavity permanent magnet rotor ( PMR ) pump is featured as preparing cavity body rotor and cavity shell by plastic injection molding for setting then in one body or one body connected structure ; setting outlet , front head opening , electro thermal tube ( ET ) opening at bottom and separated stator slot on cavity body ; installing PMR , front hearing and impeller in rotor or heating cavity from front head opening ; installing ET spiral portion in heating cavity from its own opening ; filling and sealing stator in stator slot ; setting temperature sensing component on external side surface of ET fixture disc and setting junction box below ET fixture disc and stator slot . The ET should be installed first when assembling operation is carried out.

This invention relates to new type of safe fuse and its process method, which forms Monolithic structure by more than three layers of glass to ceramics layer and the metal film on each layer with two end prove on the conductive layer with inner metal film conducted. The method to process the fuse comprises the following steps: covering one layer of metal film on glass to ceramics layer; then covering one layer of ceramics layer and repeating the above steps to get the designed layer number to get the crude film slice of the monolithic structure; then cutting the film slice into single fuse to burst into ceramics and finally sealing and coating.

The invention provides a 24kV vacuum circuit breaker on an outdoor column; the whole structure of the vacuum circuit breaker adopts an open structure with separated three phases and eliminates the threatening of 'internal condensation'; the insulated structure adopts the composite insulation of epoxy resin and silicon rubber; furthermore, the insulation structure of the vacuum arc distinguish chamber is improved, and the insulation performance of the circuit breaker is improved; a miniaturized spring operation mechanism increase the switch-closing force of the spring operation mechanism simultaneously so as to sufficiently meet the switch-closing speed requirement of the 24kV outdoor circuit breaker; a special vacuum arc distinguish chamber is adopted so as to lead the rated current of the circuit breaker, the short circuit on/off current and the on/off time of the short circuit on/off current to be improved; the vacuum circuit breaker of the invention aims at the 24kV high-voltage power transporting circuit, fills up the blank of the similar equipment in China, and has the advantages of high reliability, miniaturization, intellectualization, maintenance-free, and strong on/off capability of short circuit current.

A laminate type magnetic ball comprises at least three layers of basal body diaphragms, end electrodes which are located on two sides of the basal body diaphragms and internal electrode coils which are arranged among different basal body diaphragms, wherein the internal electrode coils in different layers are same in structure, and wiring is realized in a parallel multipled mode. According to the laminate type magnetic ball, the rate current of the laminate type magnetic ball is greatly improved, and the direct current resistance is reduced at the same time.

The invention relates to a disk high-voltage direct-current generator. The disk high-voltage direct-current generator consists of two parts, namely a stator and a rotor, wherein a power generating disk is combined by connecting the rotor with a connecting lead in series through a power generating unit, and a plurality of groups of power generating disks are superposed to form the generator rotor. The generator adopts the basic principle of Faraday disk power generation, the power generating unit is used for cutting magnetic induction lines of the vertical power generating disks to produce electromotive force, two adjacent power generating units are connected in series by virtue of the connecting lead, and the connecting lead cannot produce reverse electromotive force in rotation through magnetic shielding near the connecting lead to further enable the generator to have a very high power generating voltage. Meanwhile, the generator also can be used as a motor, and the generator and the motor with the structures have the characteristics of small internal resistance without iron loss, simple structure, wide material sources, large capacity, and small volume and calorific value. Used as the motor, the generator also has the advantages of great output torque and wide application range.

The invention provides an inductor assembly. The inductor assembly is formed by multiple inductors in a packaging manner, wherein each inductor comprises an inductance coil and two E-shaped magnetic cores; each magnetic core comprises a bottom column, and a middle column and two side columns protruding from the bottom column to the same side; the bottom column, the middle column and the side columns jointly form a magnetic core plane; the two side columns are positioned on the two sides of the middle column respectively; the opening ends of the two magnetic cores face each other; the middle columns of the two magnetic cores face each other; the side columns of the two magnetic cores prop against each other; two magnetic cores form two magnetic loops; the inductance coils are wound around the middle columns of the corresponding two magnetic cores; an air gap is formed between the middle columns of the two magnetic cores; the inductors are tightly arranged on the magnetic core planes in a rectangular array manner; and the magnetic cores of every two adjacent inductors prop against each other. The invention also provides a manufacturing method for the inductor assembly. The external electromagnetic interference of the inductor assembly is greatly lowered; the space utilization rate is obviously improved; and the inductor assembly has a good magnetic shielding effect even if the inductor assembly is small in volume.

The invention relates to a battery energy storage circuit and a battery energy storage system. Through arranging a plurality of energy storage bridge arms which are connected in parallel in each phase cluster, the rated current which can be borne by the battery energy storage circuit can be increased, thereby ensuring that the battery energy storage circuit has enough large capacity under the condition that the rated voltage of the battery energy storage circuit is not changed. The above capacity expansion method is simple and easy to implement, direct series-parallel connection of a large number of energy storage devices (such as batteries) is avoided, the implementation difficulty is reduced, meanwhile, the number of the energy storage bridge arms in each phase cluster can be set at will, and redundancy can be achieved, so the capacity expansion method has high capacity expansion reliability.

The invention discloses a DC quick fuse for an electric vehicle. The DC quick fuse comprises a housing which is internally provided with an inner fixing rack. The inner fixing rack is internally provided with a copper pole column. The copper pole column comprises an upper copper pole and a lower copper pole which are connected with each other in a contacting manner. A current flow fuse is welded between the upper copper pole and the lower copper pole. The lower copper pole is internally provided with a lower copper pole chamber which is through in the vertical direction. The lower copper pole chamber is internally provided with a piston which moves vertically. An arc extinguishing fuse is welded on the inner fixing rack. The upper copper pole, the lower copper pole, the inner fixing rack and the piston form a small chamber which is filled with insulating oil. The part surrounding the current flow fuse is filled with the insulating oil. Quartz sand is filled between the housing and the inner fixing rack. The part surrounding the arc extinguishing fuse is filled with the quartz sand. The DC quick fuse for the electric vehicle is advantageous in that 1, compared with a common fuse, large rated current, low power consumption and high action speed are realized; and compared with an explosive bridge type mixed current limiting fuse, simple process, low cost and high reliability are realized.