594 results about "Coil structure" patented technology

The invention discloses a wireless power transmission coil optimization method and a related system, which can realize automation of coil structure parameters and multi-target global optimization by acquiring a coil geometric parameter space, constructing a comprehensive optimization function and performing iterative search in the coil geometric parameter space. The problems that in traditional design, the number of simulation iterations is large, design efficiency is low, local optimum is prone to occurring, and multiple performance indexes are difficult to balance are effectively solved, coil design efficiency and precision are remarkably improved, and dependence on artificial experience is reduced. Therefore, the number of manual intervention and simulation is remarkably reduced, the coil design efficiency is improved, and the prototype development period of the WPT system is shortened. Besides, iterative search is carried out in the parameter space, so that the whole design space can be effectively explored, a locally optimal solution trap can be jumped out, and a globally optimal or approximately globally optimal coil structure parameter combination can be obtained more possibly.

The invention discloses a frequency mixing sound demodulator based on a curled structure and a use method thereof in the acoustics field, the demodulator is used for separating frequency mixing sound mixed by a plurality of sound waves with preset frequencies according to respective frequencies, and the demodulator comprises an air waveguide for transmitting the sound waves, and blocking structures arranged on two sides of the air waveguide for blocking the sound waves from penetrating, and a plurality of curled structures that capture corresponding preset frequency sound waves; curled structures are arranged in the barrier structure on at least one side of the air waveguide at intervals, one end of each curled structure is open, and the other side is closed; a plurality of cross beams for blocking penetration of sound waves are arranged in each curled structure, and an internal channel of each curled structure is divided into different lengths to serve as different acoustic resonant cavities so as to capture the sound waves with different frequencies; the closed end of each curled structure is a detection end of each preset frequency sound wave. The invention solves the problem that the existing method is difficult to instantly separate the frequency mixing sound signal and carry out information transmission.

The invention discloses a coil structure-based length self-sensing method for high polymer twisted artificial muscle, which comprises the following steps of: firstly, enabling the artificial muscle to be equivalent to N equidistant circular current loops, establishing an inductance calculation formula by combining a Biot-Savart law and a magnetic field superposition principle, and breaking through the limitation of a traditional solenoid model on a helical angle; then through MATLAB numerical simulation and iterative computation, fitting to obtain a power function describing the relation between inductance and length; and finally, proposing a parameter dynamic correction mode based on single-time initial inductance measurement according to complex factors such as actual magnetic flux leakage and skin effect, and realizing rapid adaptive calibration by adjusting a parameter b. In a word, the method creatively combines theoretical modeling with experimental correction, the sensing precision in a dynamic stretching scene is remarkably improved while the inductance-length macroscopic trend prediction capability is ensured, dependence on a large amount of experimental data is not needed, and the method has good engineering applicability and is worthy of popularization.

The invention discloses a magnetic field chip design method based on a genetic algorithm, and the method comprises the steps: setting genetic algorithm parameters, and setting magnetic field chip target parameters according to actual application demands; generating an initial population, wherein the initial population is a plurality of groups of individuals containing coil parameters; checking constraint conditions of the individuals, wherein the constraint conditions comprise physical constraints and design constraints; the power consumption generated by the coil structures corresponding to the individuals meeting the constraint conditions serves as a fitness function, and the fitness of all the individuals in the current population is evaluated; and judging whether a termination condition is met or not, outputting an individual with the optimal fitness as an optimal combination of coil parameters under the target parameters of the magnetic field chip when the termination condition is met, otherwise, generating a next-generation population, and repeatedly carrying out constraint condition check and fitness evaluation until the termination condition is met. According to the method, the magnetic field chip with the minimum power consumption meeting the magnetic field target can be designed, the design time of the magnetic field coil is greatly shortened, and the design rapidity and flexibility are improved.

The invention relates to a radio frequency coil design method for transmitting array space coding imaging, and belongs to the technical field of magnetic resonance imaging. Aiming at the problems of low single-dimensional coding efficiency, strong coupling interference among coils and nonlinear phase gradient in the traditional TRASE technology, axial and radial coding coils are designed based on a target field method and a magnetic dipole method, two-dimensional radio frequency phase coding is realized through reverse current solenoid decoupling combination, and excitation and signal receiving are realized in combination with a saddle-shaped coil. According to the technical scheme, by optimizing the coil structure and the decoupling design, multi-dimensional efficient coding, high-precision phase gradient, strong anti-interference and light system weight are achieved, and the method is suitable for portable and dynamic monitoring scenes of low-field magnetic resonance.

A switch device includes a circuit board, a coil structure, a lower cover, an upper cover, an elastic part, and a sliding part. The circuit board gas a through hole running through the circuit board. The coil structure is disposed on the circuit board and surrounds the through hole. The lower cover us located over the coil structure. The upper cover is disposed on the lower cover. The lower cover and the upper cover form an accommodating space. The elastic part is located in the accommodating space. The sliding part passes through an opening of the upper cover and is configured to slide relative to the lower cover along a direction. The sliding body is configured to drive the sliding part to pass through the through hole along the direction to generate a switch signal corresponding to an inductance variance of the coil structure.

A resin film (100) comprising a core layer (2) and adhesive resin layers (1) which are respectively provided to both sides of the core layer (2), wherein: the adhesive resin layers (1) each comprise an adhesive resin composition that contains an epoxy resin; the dielectric breakdown strength of a cured product of the adhesive resin composition is not less than 300 kV / mm; the core layer (2) comprises a polyimide film; and the dielectric breakdown strength of the polyimide film is not less than 300 kV / mm.

The invention discloses a design method of a multistage nested Helmholtz coil system, and relates to the technical field of general instrument and meter manufacturing. According to the reciprocal analysis design method for the coil structure parameters and the magnetic field characteristics of the multistage nested Helmholtz coil system under the global sensitivity, the optimal design expression of each design parameter of the multistage nested Helmholtz coil system can be determined based on the reciprocal analysis design method, and the multi-parameter expression of the magnetic field characteristics can be obtained; the coil parameter design priority is defined, and an optimization design strategy for the magnetic field design indexes is provided. When a macroscopic design requirement of a target uniform magnetic field is provided, an optimal solution of each design parameter of the multistage nested Helmholtz coil system can be directly obtained. According to the method, the Helmholtz coil can be efficiently and accurately improved and designed according to needs.

The invention discloses a vacuum arc extinguish chamber structure with large rated current and strong breaking capacity, which comprises a structure body, and is characterized in that the structure body comprises a static contact assembly, the static contact assembly comprises a static end arc contact and a static end main contact, and the static end arc contact is arranged in front of the static end main contact and protrudes for a preset distance d along the on-off direction; and the moving contact assembly comprises a moving end main contact and a moving end arc contact, and the moving end main contact and the moving end arc contact are located on the same plane. According to the invention, the effect that the main contact does not burn arc during breaking is realized, the contact surface of the main contact is protected from being ablated by the arc, and a physical foundation is laid for the high capacity of the vacuum arc-extinguishing chamber. The moving end arc contact is provided with a coil structure so as to generate a transverse magnetic field or a longitudinal magnetic field, and the magnetic lines of force between the static end arc contact and the moving end arc contact have the combined action of the longitudinal magnetic field and the transverse magnetic field, so that the breaking capacity is high.

The utility model discloses a laminated chip inductor, which comprises a main body and an outer electrode, the outer electrode is arranged on the outer surface of the main body, the main body comprises a plurality of conductor layers and an insulating layer, the plurality of conductor layers are laminated, and two adjacent conductor layers are isolated by the insulating layer. The conductor layer comprises a middle wire part and a leading-out part, the middle wire part is communicated with the outer electrode through the leading-out part, the leading-out part comprises a coil structure and at least two leading-out ends, and the width sum of the leading-out ends is 15%-40% of the width or length of the laminated chip inductor. By adopting the structure with multiple leading-out ends, the open circuit condition caused by ablation of the leading-out parts or change of internal stress of the inductor is effectively reduced, and the overall reliability and durability of the inductor are improved.

The utility model relates to a radio frequency coil assembly for magnetic resonance scanning equipment and the magnetic resonance scanning equipment. The radio frequency coil assembly comprises a first coil structure and a second coil structure, the first coil structure can be worn on a scanning part of a detected object, and the size of the first coil structure can be matched with the size of the scanning part, so that the first coil structure is closer to and fits the scanning part, and magnetic resonance signals emitted by tissues can be received more efficiently; a higher image signal-to-noise ratio is obtained; the second coil structure is separated from the first coil structure and surrounds the outer side of the worn first coil structure, and a certain gap is formed between the second coil structure and the first coil structure, that is, the size of the second coil structure can be made to be larger, so that the device can adapt to detected objects with more body types, and the proportion of applicable people is increased; and moreover, the problem of claustrophobia of the detected object can be relieved, the comfort of the detected object is improved, and the use is more convenient.

The application provides a coil module, an electronic device and a wireless charging system, and relates to the technical field of wireless charging, and aims to solve the problem that the thickness of the wireless charging coil module is relatively large, which is not conducive to the arrangement of other functional devices in the electronic device. The coil module comprises a coil structure; the coil structure comprises a functional layer; along the thickness direction of the coil structure, the functional layer comprises a first wiring sublayer, a second wiring sublayer and an insulating sublayer located between the first wiring sublayer and the second wiring sublayer; the coil structure further comprises a first end, a second end and a plurality of groups of coils connected in series; the first end and the plurality of groups of coils are arranged on the first wiring sublayer, and the outermost group of coils is connected to the first end; the second end is arranged on the second wiring sublayer; a via hole is arranged on the insulating sublayer, and a connecting structure is arranged in the via hole; the innermost group of coils is connected to the second end through the connecting structure in the insulating sublayer, so that the first end is electrically connected to the second end through the plurality of groups of coils connected in series.

The invention discloses a cylindrical material conveying device based on a horizontal linear motor, and belongs to the field of mechanical design and manufacture, the device comprises a magnetic flux switching linear motor, a stator supporting device, a material supporting device, a material pushing device and a sensor device, and the magnetic flux switching linear motor is a driving source and is of a horizontal bilateral structure; the reinforcing ribs in the stator supporting structure adopt a dual-function coupling design, so that the cost can be reduced and the efficiency can be improved; the material supporting device is fixedly connected with the stator supporting structure and is in linear contact with the cylindrical material; the pushing device is fixedly connected with the linear motor rotor and is connected with the stator supporting structure through a linear guide rail sliding block; the sensor device is located on one side of the linear motor, and a signal line is of a spring coil structure. The rotor is simple in structure, easy to maintain, good in natural heat dissipation effect, compact in overall structure and high in space utilization rate, and the problems that an existing same-type cylindrical material conveying device is complex in rotor structure, poor in natural heat dissipation effect and low in overall structure space utilization rate are solved.

The invention relates to the technical field of electromagnetic coils, in particular to a Halbach array planar coil structure unit. The Halbach array planar coil structure unit is composed of a first substructure, a second substructure and a third substructure. According to the invention, a planar electromagnetic coil is adopted to form a Halbach array permanent magnetic field effect; the invention discloses a Halbach array permanent magnet structure, and aims to solve the problems that the existing Halbach array permanent magnet structure is difficult to miniaturize and rigid, cannot get rid of the limitation of permanent magnet materials, is difficult to realize a sine distribution magnetic field in a real sense and is low in electromagnetic utilization rate.

The invention discloses a high-tone-quality low-energy-consumption long-service-life automobile electric horn which comprises an iron cover assembly composed of an iron cover, a static iron core and a coil structure, a sounding assembly composed of a sounding diaphragm and a movable iron core, and a rolling part formed by bending the peripheral edge of the sounding diaphragm. The rolling part is wrapped and fastened on the outer side of the edge of the iron cover through an edge covering and riveting process, so that the iron cover assembly and the sounding assembly are assembled into an integral upper assembly in a riveting manner, a lower assembly is assembled through the horn and the mounting bottom plate, and the upper assembly and the lower assembly form the electric horn assembly through a buckling and pressing structure. By means of the installation design, parts such as plastic rings and bolts needed by traditional screw connection or welding are omitted, the assembly complexity is reduced, the installation structure is simplified, automatic production is easy, cost is reduced, the overall weight of the product is reduced, and reliable sealing performance, anti-rust performance and structural rigidity are obtained; and the structural stability, the acoustic performance and the long-term working reliability of the product are improved.

The invention discloses a voltage-controlled oscillator and a sub-sampling phase-locked loop, and relates to the technical field of phase-locked loops. The voltage-controlled oscillator comprises two negative resistance transistors and a three-layer coil structure; the three layers of coil structures are respectively a drain coil, a grid coil and a source coil from outside to inside; the gate coil and the drain coil are both of an octagonal structure, and the source coil is of a splayed structure; the drain coil, the source coil and the grid coil are all provided with center taps, the center tap of the source coil is connected with a power voltage module, the center tap of the drain coil is grounded, and the connection point of the center tap of the source coil and the power voltage module and the connection point of the center tap of the drain coil and the ground are located on the same side of the drain coil. And the two negative resistance transistors are positioned on the other side of the drain coil. According to the invention, automatic alignment of second harmonics in a wide frequency range is realized. And meanwhile, an extra chip area is not increased.

The present invention is a mechanical energy harvesting generator of electricity, comprising a coil structure including a winding of an electrical conductor disposed over a coil length, and capable of inducing electricity therein in the presence of a moving magnetic field provided by a movable magnet, wherein the winding includes an aperture about which the electrical conductor is wound and having a path through the coil structure substantially parallel with the length that receives the movable magnet. A magnet is disposed to be movable in response to motions applied externally to the coil structure along the path through the coil aperture, and having magnetic poles disposed to provide the moving magnetic field experienced by the coil as the magnet is moved along the path, further characterized in that a metallic glass layer is disposed around the coil structure and a winding outer surface.

Provided is a coil structure including an inductor coil having a self-bonding wire structure and including a central hole, a detection coil electromagnetically coupled to the inductor coil, a support unit surrounding at least a portion of an outer periphery of the inductor coil, and a housing including an upper magnetic body and a lower magnetic body facing each other in a vertical direction with the inductor coil therebetween to form an inner space in which the inductor coil and the detection coil are provided, the upper magnetic body and the lower magnetic body each including a protrusion inserted into the central hole of the inductor coil.

This invention belongs to the field of underwater wireless power transmission technology and discloses a multi-load wireless power transmission system and design method. The system includes a multi-load coil coupling mechanism and a resonant compensation circuit. The multi-load coil coupling mechanism is used to perform operational tasks, and the resonant compensation circuit is used to transmit power to the multi-load coil coupling mechanism. The invention can be used in environments with any number of loads, has minimal interference between secondary sides, and provides stable multi-load transmission. The coil structure is simple, significantly reducing design complexity.

A coil structure includes a coil set including a first coil and a second coil. The first coil and the second coil are wound to form an annular area. A first end of the first coil and a first end of the second coil are close to an inner ring of the annular area. A second end of the first coil and a second end of the second coil are close to an outer ring of the annular area. The first end of the first coil is electrically connected to the first end of the second coil. A first projection-of the first coil on a plane perpendicular to an axial direction of the coil structure and a second projection of the second coil on the plane are mirror-symmetrical to each other.

The invention provides a coil array and a wireless power transmission system, the coil array comprises at least one coil structure, the coil structure comprises three coil units, and the three coil units respectively form three sides of the same triangle so as to form the coil structure; wherein each coil unit in the same coil structure is configured to allow the current flowing through the coil unit to form a current loop, and the coil units in the same coil structure are the same or different; moreover, each coil unit in the same coil structure is configured to be excited by an independent amplitude-modulated wave and obtain a driving current, so that the coil array is allowed to be configured to obtain optimal magnetic field distribution and magnetic field polarization according to different phases and current directions and form a three-dimensional rotating magnetic field.

The utility model discloses a magnetic stirrer with a constant temperature function, and relates to the technical field of analytical instruments, in particular to the magnetic stirrer with the constant temperature function. The device comprises a shell, an ultrathin magnetic coil, a support frame, a power switch, an adjusting knob, a control circuit and a constant temperature device, the even number of the ultrathin magnetic coils is 6-12, and the ultrathin magnetic coils are uniformly distributed at the position, close to the upper wall, of the upper part in the stirrer shell by taking the center of the stirrer shell as a circle center and are fixed through a support frame and bolts; constant temperature devices are arranged at the center and the outer side of the ultrathin magnetic coil; and the control circuit is arranged in the stirrer shell and is respectively connected with the ultrathin magnetic coil, the constant temperature device, and a power switch and an adjusting knob which are arranged on the outer side of the front wall of the stirrer shell. According to the technical scheme, the problems that the temperature of a to-be-stirred sample cannot be accurately controlled due to the fact that the internal temperature of a stirrer in the prior art cannot be controlled, and the stirrer is large in size and heavy in weight due to the fact that a magnetic coil structure is large are solved.

The present application relates to a kind of magnetic resonance imaging anti electromagnetic interference coil design method, the method includes six execution steps: step 1, input superconducting magnet coil structure;Step 2, determine the position of anti electromagnetic interference coil;Step 3, calculate the number of turns of anti electromagnetic interference coil;Step 4, integrate superconducting magnet coil and anti electromagnetic interference coil structure information and calculate magnetic field transfer vector, inductance matrix, coil area vector;Step 5, construct mathematical optimization model with shielding factor as objective function and solve the axial position of anti electromagnetic interference coil;Step 6, anti electromagnetic interference coil number of turns integer optimization and calculate shielding factor.The method can be applied to the anti electromagnetic interference coil design of any magnetic resonance imaging superconducting magnet, has good design flexibility and engineering applicability.

The invention relates to a power generation box-type transformer substation convenient to assemble, and belongs to the technical field of box-type transformers. Comprising a box body and a transformer assembly, and the transformer assembly is arranged in the box body and comprises an iron core and a sectional coil; each phase of coil of the sectional coil is divided into an upper section of sub-coil and a lower section of sub-coil, and the upper section of sub-coil and the lower section of sub-coil are two sections of detachable series structures; the upper-section sub-coil and the lower-section sub-coil are integrally formed by adopting a modularized insulating framework, axial radiating fins are integrated on the outer wall, and an insulating gasket is attached to the inner wall of the upper-section sub-coil and the lower-section sub-coil; sliding blocks matched with the horizontal guide rails of the box body mounting bracket are arranged on the outer walls of the upper-section sub-coil and the lower-section sub-coil, can slide into corresponding positions of the iron core along the horizontal guide rails, and are matched with vertical positioning clamps for fixation; the transformer coil structure is mainly improved, and the problems of high coil hoisting difficulty, complicated structure assembly and low wiring efficiency in box transformer substation assembly are solved.

The invention provides a coil module, electronic equipment and a wireless charging system, relates to the technical field of wireless charging, and aims to solve the problem that the thickness of a wireless charging coil module is relatively large and is not beneficial to setting of other functional devices in the electronic equipment. The coil module comprises a coil structure; the coil structure comprises a functional layer, and the functional layer comprises a first wiring sub-layer, a second wiring sub-layer and an insulator layer located between the first wiring sub-layer and the second wiring sub-layer in the thickness direction of the coil structure. The coil structure further comprises a first end, a second end and a plurality of coil groups which are sequentially connected in series, the first end and the plurality of coil groups are arranged on the first wiring sub-layer, and the coil group on the outermost circle is connected with the first end; the second end is arranged on the second wiring sub-layer; a via hole is formed in the insulator layer, and a connecting structure is arranged in the via hole; and the innermost coil group is connected with the second end through a connecting structure in the insulator layer, so that the first end is electrically connected with the second end through a plurality of coil groups which are sequentially connected in series.

A resin film (100) having a core layer (2) and adhesive resin layers (1) respectively disposed on both sides of the core layer (2), the adhesive resin layers (1) being formed of an adhesive resin composition having a minimum viscosity of 500 Pa·s or more at a temperature of 40°C to 160°C as measured by a rheometer.

The utility model discloses a coil structure and a relay, the coil structure comprises a coil rack and a coil leading-out end integrated with the coil rack through injection molding, the coil leading-out end leads out a coil end portion on the coil rack to facilitate connection, and the coil leading-out end is integrated with the coil rack through an integrated injection molding technology. The process of inserting the coil soldering lug is effectively reduced, and the production efficiency of the coil is improved.

The invention discloses an electromagnetic heating assembly and an electric cooking utensil, and relates to the technical field of electromagnetic heating devices, and the electromagnetic heating assembly comprises an installation support which is configured to be in an arc shape and forms a containing groove; the coil structure comprises a first coil and a second coil, the first coil is fixed in the containing groove and is coaxial with the containing groove, a plurality of second coils are arranged outside the first coil in a circumferential array mode, and every two adjacent second coils are connected in series or in parallel. The first coil is connected in series or in parallel with one of the second coils; wherein the first coil and the second coil are formed by winding aluminum-based graphene wires. According to the technical scheme provided by the invention, the heating range is expanded, the manufacturing cost is reduced, and the occupied volume is reduced.

The utility model discloses a hinge formula openable three-axis coil structure, including the whole of rectangular structure of profile truss, X axis coil winding skeleton, Y axis coil winding skeleton and Z axis coil winding skeleton group's coil system, wind X axis coil on X axis coil winding skeleton, wind Y axis coil on Y axis coil winding skeleton and wind Z axis coil on Z axis coil winding skeleton, one side of coil system is provided with coil door, and the coil door includes the Z axis coil disconnected at the butt -joint end and the rotating Z axis coil winding skeleton that is disconnected at butt -joint end, is hinged with the Z axis coil winding skeleton of adjacent surface through heavy hinge at the rotating side, and the two free ends of Z axis coil are installed with heavy load connector respectively, and the two heavy load connectors of two free ends of same Z axis coil are buckled fixed link through butt -joint upper shell and lower shell, and Z axis coil circuit is connected when closing. The utility model makes sample installation time shorten, realizes magnetic field performance zero compromise and saves maintenance dismounting cost.

A coil structure applied in the field of wireless charging comprises a circuit board and a conductor. The conductor is arranged on the circuit board. The conductor comprises a plurality of coil turns, an input terminal, an output terminal, and a plurality of first capacitor structures. The coil turns are formed around a center point. The input terminal is connected to a one terminal of the coil turns. The outlet terminal is connected to another terminal of the coil turns. Each of the first capacitor structures is arranged on a corresponding one of the coil turns. Distance between the first capacitor structures and the output terminal is smaller than a distance between the first capacitor structures and the input terminal, and the first capacitor structures do not overlap with the output terminal.