2302results about "Coils" patented technology

The present invention relates to a magnetism generation coil that provides non-invasive treatment by applying a magnetic field to nerve cells or muscle cells of the body. The magnetism generation coil of the present invention comprises: a coil bundle consisting of a collection of a plurality of unit coil strands of a copper material; and a hollow tube surrounding the coil bundle and formed of a flexible material. The unit coil strands forming the magnetism generation coil of the present invention may be formed of an oxygen-free copper (OFC) coil having a low ratio of oxygen to copper.

A Magnetic Stimulation (MS) coil system 2 for connection to a current pulse generator comprising: at least one coil 4 winding for delivering a magnetic field to a target zone of a body; a first and se

The invention discloses a coil connecting device for a star imitator magnet and the star imitator magnet, the coil connecting device comprises a shell, a first connecting part and a second connecting part, and a movable space is formed between the outer peripheral surface of each connecting part and the inner wall surface of an accommodating space and between the outer peripheral surface of each connecting part and a connecting hole. The first part of the first connecting part and the second connecting part can relatively rotate around the axial direction of the shell, so that the first connecting part and the second connecting part have a certain degree of freedom of movement in the radial direction of the shell and can adapt to irregular changes of adjacent surfaces of adjacent coils in the radial direction; and the risks of plastic deformation, fatigue cracks and fracture of the connecting part can be reduced.

The invention discloses a single-coil winding type four-eight-pole composite iron system for beam homogenization. The composite iron system comprises a composite magnet current control device, a composite magnet main power supply and four-pole / eight-pole composite iron, the quadrupole / octupole composite iron has eight pole heads, and only one type of excitation coil is wound on each pole head; the current value of the A-type excitation coil is an absolute value of a quadrupole magnetic field excitation current value plus an octupole magnetic field excitation current value; the current value of the B-type excitation coil is an absolute value obtained by subtracting an octupole magnetic field excitation current value from a quadrupole magnetic field excitation current value; the quadrupole / octupole composite iron is used for simultaneously generating a dominant quadrupole magnetic field and an octupole magnetic field, so that the effects of quadrupole iron and octupole iron can be simultaneously realized by only installing one transmission element; the excitation coil structure of the quadrupole / octupole composite iron composite magnet is improved, and only one excitation coil is wound on each pole head, so that the size of the coil structure can be reduced, and the construction cost is reduced.

The invention discloses a linear beam homogenization transmission line debugging method based on a four-and-eight-pole composite magnet, and the method comprises the steps: adjusting the current of four-pole iron, and enabling the X-direction beam near the four-and-eight-pole composite magnet 1 to form a waist; the current of the quadrupole iron of the quadrupole-octupole composite iron 1 is adjusted, so that the Y-direction beam near the quadrupole-octupole composite iron 2 forms a waist; when the octupole field current of the fourth-and-eighth-level composite iron 1 is adjusted, the current of the intersection point is obtained for the second time; when the octupole field current of the fourth-and-eight-level composite iron 2 is adjusted, a method of combining intersection point current and quadrupole iron current increase is adopted. According to the invention, through a method of forming a waist in an X-direction beam near the four-eight-pole composite iron 1, forming a waist in a Y-direction beam near the four-eight-pole composite iron 2, and combining dynamic intersection points and adjustment of current of the four-pole iron, the problem that a transmission line based on discrete components of the four-pole iron and the eight-pole iron in the prior art is poor in transmission efficiency is solved. And the beam homogenization debugging of octopole iron is difficult to homogenize the Gaussian distribution beam.

An inductor provided in the present invention includes multiple windings in the magnetic core. The multiple windings comprise a first, second, third and fourth windings. Second and third windings have been connected in series to form an integrated series winding inside the magnetic core with two leads exposed on the surface of the magnetic core for electrical connection with the power supply circuit. The first winding is magnetically coupled to the second winding, and the fourth winding is magnetically coupled to the third winding. A pair of leads at both ends of the first winding and a pair of leads at both ends of the fourth winding are exposed on the surface of the magnetic core for electrical connection with the power supply circuit. The inductor is welded on the circuit board, which saves the number of weld points, makes circuit connection more reliable and reduces DCR.

The invention relates to a multi-pole magnetic field magnetizing test method and a spiral winding group thereof, and relates to the field of automatic magnetizing technology, and the method comprises the steps: constructing a test model, importing design parameters of a magnet to be tested, determining a multi-pole magnetic field distribution theoretical model, and defining a magnetic pole region and a key feature contour line; acquiring magnetic field data, scanning the surface of the magnetized magnet by using an array probe, and acquiring magnetic field intensity actual measurement data of a multi-dimensional coordinate; matching a magnetic pole contour, comparing an actually measured contour line with a theoretical contour line, and establishing sampling point mapping; correcting the deviation data, screening the deviation sampling points exceeding the threshold value, and determining magnetizing process adjustment parameters; and evaluating the magnetizing efficiency, carrying out iterative magnetizing based on the correction parameters, and generating an evaluation report containing indexes such as magnetic field uniformity and the like. The method has the effect of improving the magnetic field intensity and stability of the magnet during orientation magnetization.

The invention relates to an inductance device and a power supply. The inductance device comprises a magnetic core and coupling windings arranged in the magnetic core, pins of the windings are exposed out of the surface of the magnetic core to be connected with a power supply circuit, and the coupling windings comprise a first winding, a second winding, a third winding and a fourth winding; in the magnetic core, the second winding and the third winding are connected with each other to form a series winding, and the series winding is provided with two pins which are exposed out of the surface of the magnetic core so as to be connected with a power supply circuit; the first winding is in magnetic circuit coupling with the second winding, and the fourth winding is in magnetic circuit coupling with the third winding; a pair of pins at the two ends of the first winding and a pair of pins at the two ends of the fourth winding are exposed out of the surface of the magnetic core so as to be connected with a power supply circuit. The inductance device is welded on the circuit board to obtain a power supply, the number of welding spots on the circuit board is reduced, the reliability of circuit connection is higher, and the DCR is smaller.

The utility model belongs to the technical field of electromagnet coils, particularly relates to a magnetic suspension electromagnet coil, and aims to solve the problems that a coil with a large number of turns can generate a strong magnetic field under the same current, so that the coil with a large number of turns can be adopted to generate a strong and stable magnetic field, but the large number of turns can cause some problems. In order to solve the problems that the energy loss is further increased and even the coil is possibly damaged due to the fact that the resistance of the coil is increased and heating is increased, the utility model provides the following scheme: the coil comprises a hollow framework, a plurality of turns of coils are wound on the hollow framework, and a protective sleeve is wound on the whole outer wall of the plurality of turns of coils; and the outer wall of a single copper wire of the multi-turn coil is covered and sprayed with an insulating layer. When the magnetic suspension electromagnet coil is used, through the design of the protective sleeve, the ceramic insulating coating, the heat dissipation fins, the heat extraction fan, the heat dissipation holes and the like which are made of polyimide film materials, the heat dissipation efficiency and durability of the coil are effectively improved, and stable operation of a magnetic suspension electromagnet is ensured.

The invention relates to the technical field of wireless communication, and provides a load transformer and a differential amplifier, the load transformer comprises a first metal layer, a second metal layer, a third metal layer and a fourth metal layer which are sequentially stacked, and the first metal layer, the second metal layer, the third metal layer and the fourth metal layer are mutually spaced and asymmetrically arranged; the first metal layer is an annular first coil layer, the second metal layer is an annular second coil layer, the third metal layer is an annular third coil layer, and the fourth metal layer is a grounding layer; the load transformer further comprises a first substrate dielectric layer, a second substrate dielectric layer and a third substrate dielectric layer. The first substrate dielectric layer is arranged between the first metal layer and the second metal layer; the second substrate dielectric layer is arranged between the second metal layer and the third metal layer; the third substrate dielectric layer is arranged between the third metal layer and the fourth metal layer. The load transformer is small in area, low in cost and convenient to improve the utilization rate of the substrate.

The invention provides an electromagnetic driving device and a robot system, and relates to the technical field of medical surgery, and the electromagnetic driving device comprises an electromagnetic driving unit and a control unit. The electromagnetic driving unit serves as an execution unit and comprises a positioning frame, an adjusting assembly connected with the positioning frame and an electromagnetic coil assembly connected with the positioning frame and the adjusting assembly. The control unit comprises a master controller and a coil angle controller electrically connected with the master controller. On the basis, the coil angle controller is electrically connected with the adjusting assembly and used for adjusting the angle between the electromagnetic coil assembly and the positioning frame through the adjusting assembly so as to adjust the magnetic field direction of the electromagnetic coil assembly and drive the magnetic micro-robot to move, and therefore the magnetic micro-robot is driven to move in the human body to complete different medical functions.

To provide a welding method of electric wires which inhibits a laser beam from entering a space between butted surfaces of a first electric wire and a second electric wire and enables reduction of occurrence of spatter.SOLUTION: A welding method of electric wires includes: a first step of forming a first molten pool 40 by scanning a laser beam LB within an end edge surface of a first electric wire when the laser beam LB is radiated to end edge surfaces 34Uw, 35Uw of end edge parts of the first electric wire 34 and a second electric wire 35; a second step of forming a second molten pool 41 by scanning the laser beam within the end edge surface of the second electric wire after the first step; and a third step of forming a third molten pool 42 by connecting the first molten pool to the second molten pool by scanning the laser beam over the first molten pool and the second molten pool and after the second step.SELECTED DRAWING: Figure 12

A packaged integrated circuit (IC) including a package substrate. The package substrate includes pins; a first metal layer on the pins; a second metal layer on the first metal layer; vias on the second metal layer; an insulation material covering the pins, the first metal layer, the second metal layer, and the vias, and exposing surfaces of the pins and the vias. The packaged IC further includes a semiconductor die on the package substrate, the semiconductor die having a surface opposing the second metal layer; metal posts coupled between the semiconductor die and the exposed surfaces of the vias; and a mold compound covering the semiconductor die and the metal posts, in which the surface is separated from the second metal layer by the insulation material and the mold compound.

One object is to provide a magnetic body having a high mechanical strength. A magnetic body according to one embodiments of the present invention includes: first particles of a first alloy containing Fe and Cr; second particles of a second alloy containing at least one of Al or Mn; and bonding portions containing at least one of Al oxide or Mn oxide, the bonding portions bonding the first particles to each other. The bonding portions containing at least one of Al oxide or Mn oxide increase the mechanical strength of the magnetic body.

An electric component having electric coils, the component formed by 3D printing of at least three different 3D-printed materials with spatial distributions yielding open magnetic circuit configuration of one of the electric coils. The electric component having a bulk formed by non-magnetic and dielectric 3D printed material; and an electric coil of the open magnetic circuit configuration, 3D-printed in the bulk. A magnetic channel of magnetic material 3D-printed in the bulk forming magnetic core of the electric coil; and an electric channel forming an inductor of the electric coil having conductive material 3D-printed in the bulk with a coil / helical geometry having electrically connected conductive windings arranged to circumference the magnetic channel, which is configured and operable with the open magnetic circuit configuration and has magnetic material occupying a central region of the coil / helical geometry of the inductor while not enclosing the windings with a closed loop of the magnetic material.

The invention discloses a water-cooling pulsed high-intensity magnetic field coil, and belongs to the technical field of pulsed high-intensity magnetic fields. The coil adopts a laminated structure, each laminated sheet is provided with an opening and a boss, and a spiral structure is formed through electrical connection of the bosses. Each lamination is divided into a through-flow part, a water cooling part and a fixed part; the through-flow part is made of red copper, the water cooling part and the fixing part are made of stainless steel, and an integrated copper-steel composite structure is formed through welding. The water-cooling part is provided with water-cooling grooves welded and sealed by a cover plate; and the water-cooling grooves of the laminations are connected in series through water inlet and outlet holes to form a cooling flow channel. The fixing part is provided with a semicircular fixing hole used for limiting and flow guiding. And an insulating sheet is arranged between the adjacent laminations. The coil is pressed tightly through the upper and lower pressing plates and an insulated fixing stud. Through lamination partitioning and copper-steel compounding, the high-strength and efficient water-cooling capacity is achieved, and the problems of insufficient strength and cooling of the pulse high-intensity magnetic field coil under repetition frequency work are effectively solved.

The invention provides a coil assembly. The coil component includes: a body including a first surface and a second surface opposite to each other in a first direction and a third surface and a fourth surface opposite to each other in a second direction; a coil disposed in the main body; a first extraction electrode connected to an outer end of the coil and protruding to the first surface; a second extraction electrode connected to an inner end of the coil and protruding to the second surface; a first external electrode disposed on the third surface, extending to the first surface, and connected to the first extraction electrode; and a second external electrode disposed on the third surface, extending to the second surface, and connected to the second extraction electrode, in which a thickness of each of the first extraction electrode and the second extraction electrode in the second direction is smaller than a thickness of the coil in the second direction.

The invention provides a geomagnetic compensation and bias magnetic field generation system and method for cold atom interference. The system comprises a triaxial magnetometer, a triaxial Helmholtz coil, a voltage-controlled current source and an FPGA regulation and control module. The three-axis magnetometer is used for collecting space magnetic field data at a plurality of monitoring positions in the space where the three-axis Helmholtz coil is located in real time; the FPGA regulation and control module is used for calculating control voltage data required by the voltage-controlled current source according to a target magnetic field and any space magnetic field data collected by the three-axis magnetometer in each sampling period, controlling coil current transmitted to the three-axis Helmholtz coil, and outputting the coil current to the three-axis Helmholtz coil. And loop iteration is carried out until the three-axis Helmholtz coil generates a target magnetic field at a plurality of monitoring positions, wherein the target magnetic field is a near-zero magnetic field in the X / Y direction, and the magnetic field intensity in the Z direction is constant and is a non-zero value. The device can respond to the change of the environmental magnetic field in real time, and provides a stable and accurate magnetic field environment for the cold atom interference test on the basis of compensating the influence brought by the geomagnetic field.

The utility model discloses a high-focusing-degree splayed magnetic stimulation coil. The high-focusing-degree splayed magnetic stimulation coil comprises an upper coil layer and a lower coil layer, wherein the upper coil layer and the lower coil layer are formed by winding cables; by taking the center axis of the coil as a boundary, each coil layer comprises left coils and right coils which are of spiral curve structures, and each circle of cable of the two left coils and each circle of cable of the two right coils are overlapped with each other; in each circle of cable of the left coil and the right coil, the distance between the cables close to one side of the coil middle shaft is smaller than that between the cables far away from one side of the coil middle shaft; in the upper coil layer, the tail ends of the outermost ring cables of the left coil and the right coil are respectively a current input end and a current output end; in the lower coil layer, the tail ends of the outermost rings of cables of the left coil and the right coil are connected with each other; the tail ends of the innermost rings of cables of the two layers of left coils are connected with each other, and the tail ends of the innermost rings of cables of the two layers of right coils are connected with each other. According to the utility model, the gathering degree and the stimulation depth of the coil can be improved, and the stimulation to the non-target area position can be weakened at the same time.

The invention discloses a lantern-shaped transmitting coil for wireless electric energy transmission, belongs to the technical field of electronic information, and more importantly, when the transmission distance is 15mm-25mm, the energy transmission efficiency of a system even can be kept at 60% or above, and when the deviation range in the horizontal direction is-30mm-20mm, the stable energy transmission efficiency can be kept at 60% or above. And finally, when the transmission distance between the transmitting coil and the receiving coil is fixed to be 10mm, angle deviation occurs and the rotation angle is within the range of-15 degrees to 15 degrees, the transmission of the coils is kept to be more than 65%, the numerical values and the number of compensation capacitors and inductors for impedance matching can be adjusted according to actual requirements, and the impedance matching precision is improved. The working frequency of the coil is flexibly adjusted or the performance of the coil is optimized, the shapes of the transmitting coil and the receiving coil can be modified to a certain extent according to actual requirements or aesthetic requirements, and the coil is made of the most common materials, so that higher power transmission efficiency can be realized at lower cost.

A packaged integrated circuit (IC) (300) including a package substrate (110). The package substrate includes pins (321); a first metal layer (323) on the pins; a second metal layer (325) on the first metal layer; vias (322, 324, 326) on the second metal layer; an insulation material (308a, 308b) covering the pins, the first metal layer, the second metal layer, and the vias, and exposing surfaces of the pins and the vias. The packaged IC further includes a semiconductor die (101) on the package substrate, the semiconductor die having a surface (301) opposing the second metal layer; metal posts (305a, 305b) coupled between the semiconductor die and the exposed surfaces of the vias (326); and a mold compound (304, 304a) covering the semiconductor die and the metal posts, in which the surface is separated from the second metal layer (325) by the insulation material (308a) and the mold compound (304a).

A system and method for contextually aware charging of mobile devices. In accordance with an embodiment, the system comprises a base unit having one or more charger coils, for use in inductive charging; and one or more components within the base unit for providing context-aware connectivity and / or other capabilities with a mobile device. When a mobile device having one or more receiver coils or receivers associated with, is placed in proximity to the base unit, the charger coil is used to inductively generate a current in the receiver coil or receiver associated with the mobile device, to charge or power the mobile device, and at the same time the context-aware connectivity and / or other capabilities are initiated. In accordance with various embodiments, the base unit and / or the mobile device can adapt to a location or use model of interest to provide different functionalities, applications and features.

The invention belongs to the field of power electronic device optimization design, and particularly discloses a magnetic coupling energy storage element under a high duty ratio and an obtaining method. The method comprises the following steps: establishing an output current ripple model; representing the cross sectional area of the magnetic core based on the peak value of the output current ripple, and further constructing a magnetic core volume model and a winding volume model; taking the total volume of the magnetic coupling energy storage element as a target function, solving an optimal coupling coefficient under different duty ratios, matching a magnetic core material and an air gap length according to the optimal coupling coefficient, selecting a magnetic core cross section area according to the maximum flux density of the magnetic core material, and obtaining structural parameters of the magnetic coupling energy storage element; according to the invention, the size of the magnetic coupling energy storage element is reduced to the maximum extent, and the power density of the converter is increased.

The invention discloses a high-field water-cooling magnet device which comprises a container assembly and a magnet coil assembly, and the magnet coil assembly is located in the container assembly and communicated with the container assembly. The container assembly comprises a hydraulic machine assembly, and the hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The axial force application device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, and the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved.

An adverse effect on characteristics of a coil component can be reduced. A coil component includes a drum core and first and second wires. The drum core includes a winding core and first and second flanges. The second wire includes first, second and third wound portions. The second wound portion is located on the second flange side with respect to the first wound portion in a direction along a central axis X, and at least a part of the second wound portion is wound around an outer peripheral surface of the winding core. When the second wire is traced from a first end to a second end in the second wound portion, the second wire has a first intersection and a second intersection intersecting a specific one turn of the first wire within a range where the second wire is wound by two turns.

The invention discloses an intelligent magneto-rheological track for robot-assisted machining and application thereof, and the intelligent magneto-rheological track comprises a magneto-rheological unit module which is made of a magneto-rheological material, the magneto-rheological material is packaged in a flexible film, and a coil unit for generating a magnetic field is wound outside the flexible film; and the track control system can control the magnetic field size and the magnetic field distribution of each position of the magnetorheological unit module according to the corresponding relation of the appearance, the shape and the magnetic field of the magnetorheological unit module, and the magnetorheological unit module is adjusted to have the required appearance and the required shape. The magnetic field of the magneto-rheological unit module is regulated and controlled, so that the magneto-rheological unit module can have the rigidity required by operation and operation of the robot, and the magneto-rheological unit module can be regulated to be in the set shape and shape, so that the magneto-rheological unit module can adapt to working faces of various different shapes and different robots; and the robot can be used for machining in large-curvature areas such as aircraft surface skins and narrow space scenes such as air inlet channels.

The present invention relates to a new form of air, land, underwater, or space propulsion, achieved by the use of suitable electromagnetic interactions. When using coils (1), with internal core (2) and support piece (3), subjected to current pulses with asymmetric current derivative and magnetic field, we obtain directional propulsion forces. This is possible due to a new electromagnetic propulsion mechanism that uses the conservation of total momentum where the sum of the mechanical moment with the moment of the magnetic field must always be conserved, resulting in a constant and null total sum of the two components, where the variation of the magnetic field moment will generate a corresponding change in the mechanical moment of the coil, thus generating propulsion forces. When magnetic fields with asymmetric derivative are produced in an external volume, they may also generate force fields.

The invention discloses a quadrupole / octupole composite iron system for beam homogenization. The composite iron system comprises a composite magnet current control device, a composite magnet main power supply and quadrupole / octupole composite iron, the composite magnet current control device is used for controlling a composite magnet main power supply to output quadrupole field coil current and octupole field coil current of quadrupole / octupole composite iron. The quadrupole / octupole composite iron is used for simultaneously generating a dominant quadrupole magnetic field and an octupole magnetic field, so that the effects of quadrupole iron and octupole iron can be simultaneously realized by only installing one transmission element; according to the invention, a quadrupole magnetic field and an octupole magnetic field are generated in the aperture of the composite iron, focusing and homogenization of beam envelope are realized at the same time, the number of transmission elements can be reduced, the length of a transmission line can be shortened, and the construction cost of the beam transport line is reduced. The problem that traditional quadrupole iron and octupole iron cannot be simultaneously installed at the maximum beam envelope position due to the space problem and cannot play a great role of a magnet is solved.

A planar uniform magnetic pressure generating device based on a spiral pipeline coil comprises a pulse current generating device, the spiral pipeline coil, a magnetic collector, a guide frame, a mold and a plate. The pulse current generating device is electrically connected with the spiral pipeline coil, the magnetic collector is divided into an upper part and a lower part, the upper part is of a cylindrical structure with a circular longitudinal section, the lower part is of a polygon with a gap, a penetrating gap is formed in the lower end of the upper part, and the lower part and the upper part are connected through one side or two sides of the gap; the spiral pipe coil is arranged in a cylinder structure on the upper portion of the magnetic collector, the die is arranged in the guide frame, the lower portion of the magnetic collector is located above the guide frame, an insulation pressing plate is arranged between the lower portion of the magnetic collector and the guide frame, and a plate material is arranged between the insulation pressing plate and the guide frame. The forming device is reasonable in structural design, has the characteristics of high coil strength, large energy density and good magnetic force uniformity, has low requirements on die materials and sizes, is good in adaptability, and is suitable for forming difficult-to-deform metal sheets such as aluminum alloy, magnesium alloy and titanium alloy.

The invention provides a multi-waveform magnetic field generating device for magnetic hyperthermia. The multi-waveform magnetic field generating device comprises a power supply module, a BUCK voltage regulating circuit, a multi-waveform signal generating circuit, a power amplifying circuit, a series resonance inverter circuit, an induction coil, a water cooling module, a temperature acquisition module, a DSP microprocessor and a TFT display screen. The power supply module is combined with BUCK to supply power to the device; the multi-waveform signal generation circuit, the power amplification circuit and the series resonance inverter circuit are used for generating an alternating magnetic field to act on a magnetic medium to generate a heat effect and realize magnetic hyperthermia; the water cooling module is used for reducing the temperature of the induction coil; the temperature acquisition module acquires temperature data of a treatment area and performs output control on the Buck voltage regulation circuit by using the DSP microprocessor so as to regulate the output power of the power amplification circuit powered by the BUCK voltage regulation circuit and realize intelligent temperature control of the magnetofluid; the problems that in the prior art, a magnetic field generation device is single in induction waveform and poor in heat generation effect are solved.