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147 results about "Multi coil" patented technology
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Device and method for controlling transmission of power in wireless power transmitting system
The present disclosure relates to a device and method for controlling transmission of power in a wireless power transmitting system. The present specification discloses a wireless power transmitting method comprising the steps of: performing a digital ping on each of a plurality of coil combinations formed from a plurality of primary coils; receiving a signal intensity packet of each of the coil combinations from the wireless power receiving device; and forming the magnetic coupling by operating a coil combination selected on the basis of the signal intensity packet, and transmitting wireless power to the wireless power receiving device on the basis of the magnetic coupling. Therefore, an optimal multi-coil can be rapidly selected according to the location of the wireless power receiving device.
Owner:LG ELECTRONICS INC
Wireless power transmission method and device therefor
PendingUS20250219471A1Circuit authenticationNear-field transmissionElectric power transmissionTransmitted power
A wireless power transmission method executed by a power transmitter comprising multi-coils, according to one embodiment of the present invention, comprises the steps of: detecting a second power receiver while transmitting power to a first power receiver; determining at least one primary coil adequate for power transmission; by using the determined at least one primary coil, determining whether the second power receiver supports a shared mode protocol; and if the second power receiver supports the shared mode protocol, transmitting power to the first and second power receivers according to the shared mode protocol, wherein the shared mode protocol may be a protocol for simultaneously managing information exchanges between the power transmitter and multiple power receivers.
Owner:LG ELECTRONICS INC
Wireless power transmission method and device therefor
ActiveUS20250219470A1Circuit authenticationNear-field transmissionElectric power transmissionTransmitted power
A wireless power transmission method executed by a power transmitter comprising multi-coils, according to one embodiment of the present invention, comprises the steps of: detecting a second power receiver while transmitting power to a first power receiver; determining at least one primary coil adequate for power transmission; by using the determined at least one primary coil, determining whether the second power receiver supports a shared mode protocol; and if the second power receiver supports the shared mode protocol, transmitting power to the first and second power receivers according to the shared mode protocol, wherein the shared mode protocol may be a protocol for simultaneously managing information exchanges between the power transmitter and multiple power receivers.
Owner:LG ELECTRONICS INC
Dynamic electromagnetic shielding method for complex electromagnetic environment and shielding device thereof
PendingCN121711981AMagnetic/electric field screeningBiological modelsMagnetic disturbanceElectromagnetic shielding
The invention discloses a dynamic electromagnetic shielding method for a complex electromagnetic environment and a shielding device thereof, and the method comprises the steps: obtaining real-time voltage data in the complex electromagnetic environment, carrying out the voltage feature analysis, outputting a feature vector of a real-time voltage signal, and analyzing the type of an interference source of a current electric field according to the feature vector, performing interference trend time sequence prediction processing on the feature vector through a pre-trained LSTM model according to the interference source type to obtain a time domain voltage value and a phase deviation value, and performing composite loss coefficient calculation on the time domain voltage value and the phase deviation value to obtain a composite loss coefficient; and performing reverse offset signal synthesis processing on the voltage interference signal according to the calculated composite loss coefficient, performing coil dynamic activation processing on a preset multi-coil array according to the synthesized reverse offset signal, generating a directional offset magnetic field corresponding to the real-time electromagnetic interference, and performing electromagnetic offset shielding on the current electromagnetic interference. According to the invention, transient interference can be responded in time, and the electromagnetic shielding effectiveness can be improved.
Owner:ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
Multicoil Balanced Armature Receiver
PendingUS20250294289A1Single transducer incorporationIn the ear hearing aidsElectric machineElectrical connection
A balanced armature receiver is disclosed including a multicoil motor located in a housing and comprising a movable armature connected to a diaphragm separating an interior of the housing into front and back volumes. The multicoil motor is electrically connected to contacts of a terminal board having an integrated capacitor component, wherein electrical connections of the multicoil motor and the capacitor component to the terminal board are configured to change an electrical impedance of the balanced armature receiver based on a frequency of an electrical signal applied to the multicoil motor.
Owner:KNOWLES ELECTRONICS LLC
Wireless charging multi-coil rapid matching and positioning method based on Q-learning algorithm
The invention provides a wireless charging multi-coil rapid matching and positioning method based on a Q-learning algorithm, and the method comprises the steps: S1, building a multi-coil array transmitting platform, and achieving a power supply network for the flexible switching of corresponding energy transmission units of the platform; s2, changing the position condition of a receiving coil and the starting conditions of different energy transmission units, and establishing charging environment information; s3, establishing an exploration environment under the algorithm model; s4, exploring in an unknown environment by the intelligent agent, executing an action according to an action selection strategy, and iteratively updating the Q value table; s5, calculating an accumulated reward according to the action executed by the intelligent agent; s6, evaluating an action strategy output by the intelligent agent according to the evaluation network, judging whether a model training strategy meets an initialization requirement or not, if yes, executing the step S7, and if not, executing the step S7; if not, executing the step S4; and S7, extracting a Q value table, and outputting a coil positioning and matching strategy. The application is applied to the technical field of wireless charging.
Owner:HARBIN INST OF TECH AT WEIHAI
Hybrid multi-coil collaborative optimization low-field NMR automatic shimming method and system
PendingCN121477086AMeasurements using magnetic resonanceNMR - Nuclear magnetic resonanceControl system
The invention provides a low-field NMR automatic shimming method and system for hybrid multi-coil collaborative optimization. The system comprises an optimization strategy control unit, and a coarse shimming unit, a fine shimming unit, an FID processing and evaluation index calculation unit, a current fitting and optimization unit and a shimming execution and signal acquisition unit which are respectively connected with the optimization strategy control unit. The optimization strategy control unit is used for controlling the overall operation of the system and managing the switching and matching of the coarse homogenizing unit and the fine homogenizing unit; the coarse homogenizing unit and the fine homogenizing unit are used for processing FID signals of a nuclear magnetic resonance spectrometer hardware system, assistance can be achieved through the FID processing and evaluation index calculation unit, and the FID processing and evaluation index calculation unit is used for converting collected original FID into numerical indexes capable of being used for quantifying magnetic field uniformity; the current fitting and optimizing unit is used for providing a basis for each shimming coil to analyze and solve the optimal current, and the shimming execution and signal acquisition unit is used for being connected with a lower computer.
Owner:BEIJING HONGTAI TIANCHENG SCI & TECH LTD CO
High-speed electromagnetic valve, driving circuit and design method
PendingCN121077454AReliability increasing modificationsOperating means/releasing devices for valvesElectrical resistance and conductanceHemt circuits
The invention discloses a high-speed electromagnetic valve, a driving circuit and a design method, and belongs to the technical field of electromagnetic valves. According to the design method of the drive circuit, multiple paths of peak-hold modulation circuits are provided for the multi-coil configuration electromagnetic valve to independently control all sub-coils, so that accurate control over the current of each sub-coil is achieved; the high end of the sub-coil is respectively connected with a power supply and / or a boost power supply through two MOS tubes, and in a peak stage, the control chip controls the boost MOS tubes or the power supply to be conducted, so that current in a loop rises; the lower end of the sub-coil is connected with the ground through an MOS tube and a detection resistor. When the control chip detects that the current in the loop is higher than the upper limit of a preset value, the control chip controls the boost MOS tube or the power supply to be switched off and the current starts to be reduced, and when the current in the sub-coil is lower than the lower limit of the preset value, the control chip controls the boost MOS tube to be switched on and the current rises. According to the invention, the current of each sub-coil in the multi-coil configuration solenoid valve can be accurately controlled.
Owner:BEIJING INST OF TECH +1
Magnetic field migration method and device based on staggered superposed coils
PendingCN122052618AElectronic commutation motor controlVector control systemsElectric machineComputational physics
The invention relates to a mobile magnetic field generation method and device based on multi-coil dislocation superposition, and solves the problems of intermittent magnetic field disconnection, large magnetic field fluctuation and low energy efficiency caused by phase opening, phase closing and positive and negative control required by traditional coil magnetic field movement. One group or more coils are overlapped in a staggered manner in one group of coils and are partially overlapped in space to form a continuous coverage area, smooth migration of a magnetic field is realized through uninterrupted magnetic field movement, and the stability and energy efficiency of the magnetic field are improved. The method is suitable for linear motors, rotating motors, magnetic suspension driving and other scenes needing directional movement of the magnetic field.
Owner:刘成仁
COIL UNIT
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Nondestructive testing device and method for axial force of underwater steel pipe pile
PendingCN121898677AFoundation testingApparatus for force/torque/work measurementMechanical engineeringMechanics
According to the nondestructive testing device and method for the axial force of the underwater steel pipe pile, the device is arranged on the outer wall of the steel pipe pile and in a water environment around a steel structure, and a magnetic induction coil array annularly arranged on the outer wall of the steel pipe pile captures the magnetic flux density change of the steel pipe pile; after modulation of the magnetic field monitoring and modulation module, transmission of the underwater wireless transmission unit and inversion algorithm processing of the rear-end data processing unit, the stress state of the steel pipe pile body is obtained. The method comprises the steps that the signal excitation module applies a background magnetic field to the periphery of the magnetic induction coil array, the magnetic induction coil array induces magnetic field changes outside the steel pipe pile in real time, and the magnetic field monitoring and modulating module recognizes the magnetic field changes and converts the magnetic field changes into voltage signals; the modulated voltage signal is sent to a receiving end underwater through an underwater wireless transmission unit, and a rear-end data processing unit calculates the stress distribution in the pile body according to the change of a multi-point magnetic field and by calling a multi-coil magnetic flux inversion algorithm, and outputs real-time displacement trend, stress change and abnormal alarm information.
Owner:SHANGHAI CONSTRUCTION GROUP CO LTD
Multi-coil integrated inner skeleton and conduction-cooled superconducting magnet assembly
ActiveCN115966381BTransformers/reacts mounting/support/suspensionTransformers/inductances coils/windings/connectionsElectrical conductorSuperconducting Coils
The present application relates to a multi-coil integrated inner frame and a conduction-cooled superconducting magnet assembly, the inner frame has a cylindrical cavity on the inner side, a plurality of flange plates are arranged on the outer side, and a plurality of winding grooves for coil conductors are spaced apart; a coil lead-out groove is arranged on the vertical surface of the flange plate; a mounting groove for a quench trigger heater assembly is arranged on the flange plate; a plurality of mounting support structure fixing through holes are arranged on the flange plates at both ends; a plurality of mounting screw holes are arranged on the flange plate; and a plurality of mounting planes are arranged on the outer surface of the multi-coil integrated inner frame. The conduction-cooled superconducting magnet assembly is formed by winding a wire in each winding groove of the above multi-coil integrated inner frame to form a superconducting coil; a quench trigger heater assembly is tightly mounted on the outer surface of the outer layer insulation of the coil; a structure reinforcing layer is wound in the "U" shaped groove of the quench heater; and a support plate is mounted on the outer surface of the inner frame. The present application has a simple overall structure, is easy to manufacture and assemble, and has high reliability of the finished product.
Owner:JIANGSU JACK ZHONGKE SUPERCONDUCTING TECH CO LTD
Zero-flux transient electromagnetic detection device of multi-coil tandem winding structure
The utility model relates to a zero-flux transient electromagnetic detection device with a multi-coil tandem winding structure, which comprises a transmitting coil, a transmitter, a receiving coil combination and a receiver, the receiving coil is connected with the receiver, and the transmitting coil is connected with the transmitter; the antenna is characterized in that the transmitting coil and the receiving coil are isolated from each other, and the transmitting coil and the receiving coil are located on the same plane. The transmitting coil or the receiving coil is of a multi-coil series connection winding structure. The beneficial effects are that the interference of the transmitting coil on the receiving coil can be effectively offset on the premise of almost not weakening the transmitting magnetic moment of the transmitting coil and the induction voltage of the receiving coil.
Owner:CHONGQING CUILU DETECTION TECH CO LTD
Rapid test method for multi-coil CVT
The invention provides a rapid test method for a multi-coil CVT, and the method comprises the steps: switching a controller to be connected to a mutual inductor tester, thereby enabling each coil and a corresponding load to form a test loop with the mutual inductor tester; the test loop of the first coil is closed through the switching controller, and then the output voltage is boosted to obtain test parameters; after the test of the first coil is completed, the first test loop is disconnected; a second test loop of the second coil is closed through the switching controller, and then the output voltage is boosted to obtain test parameters; after the test of the second coil is completed, the second test loop is disconnected; and so on. According to the rapid test method of the multi-coil CVT, all lines required by the test can be connected at one time, and the test lines are prevented from being repeatedly disassembled and assembled during the test; in the testing process, load switching does not need to be disconnected and reconnected, direct switching is achieved, voltage reduction is not needed, manual approaching to the tested CVT is not needed, remote operation can be achieved, and safety and high efficiency are achieved.
Owner:NISSIN ELECTRIC WUXI
Multi-coil multi-working-mode magnetorheological damper based on mixed mode
The multi-coil multi-working-mode magneto-rheological shock absorber based on the mixed mode comprises a cylinder body, a piston assembly and a magneto-rheological piston, the piston assembly comprises a piston rod and a piston body, and the piston body comprises a piston end cover and the magneto-rheological piston. Each magnetorheological piston comprises a middle piston body, a left piston body located on the left side of the middle piston body and a right piston body located on the right side of the middle piston body, electromagnetic coils are arranged on the magnetorheological pistons, and damping force output change is achieved by introducing corresponding currents into the electromagnetic coils on the different magnetorheological pistons; damping channels allowing magnetorheological fluid to flow are formed in the cylinder body and the magnetorheological piston. Different magneto-rheological effects are generated through matching of different electrifying modes of the multistage electromagnetic coils, the damping effect under various working conditions is achieved, various requirements are met by changing whether all stages of electromagnetic coils are electrified or not, the working application range of the magneto-rheological valve is greatly widened, and meanwhile the machining and manufacturing cost is reduced.
Owner:重庆武瓴智能技术有限公司
Wireless network transceiver based on multi-coil coupling
The utility model relates to the technical field of transceivers, in particular to a wireless network transceiver based on multi-coil coupling, which comprises a transceiver body, the transceiver body is mounted on a guide rail through a fixing structure, a first fixing plate is fixedly connected onto the transceiver body, and the end of the first fixing plate is slidably connected with the top end of the guide rail. A second fixing plate is slidably connected into the first fixing plate, the end of the second fixing plate is slidably connected with the bottom end of the guide rail, two tension springs are fixedly connected between the first fixing plate and the second fixing plate, a limiting rod is slidably connected into the second fixing plate, a limiting groove is formed in the first fixing plate, and the limiting rod is clamped with the limiting groove. A protruding block is fixedly connected to the second fixing plate, a plurality of clamping grooves are formed in the guide rail, the protruding block is clamped in the clamping grooves, and a bunching structure is installed on the transceiver body. Therefore, the transceiver body can be installed more easily and flexibly, and the stability is better.
Owner:HUIZHOU NON LINE TECH CO LTD
High-performance dust collector motor
PendingCN120016782AMagnetic circuit stationary partsSupports/enclosures/casingsElectric machineMulti coil
The invention provides a high-performance dust collector motor, and relates to the technical field of motors, the high-performance dust collector motor comprises an upper shell and a lower shell which form a mounting space, the center of the upper shell is provided with a rotating shaft rotatably connected with the center of the lower shell, a plurality of U-shaped parts are circumferentially distributed in the lower shell, two ends of each U-shaped part are wound with coils, and one ends of the U-shaped parts are mutually connected to form a stator; a plurality of magnetic sheets are circumferentially arranged on one surface, facing the lower shell, of the upper shell, are circumferentially distributed to form a stator, and are positioned in a U-shaped groove of the U-shaped piece; the coils of the stator are separated into multiple coils, accumulation of the same number of coils can be reduced, heat accumulated between the coils is optimized, the heat dissipation effect is improved, the performance of the motor is optimized, the coils are separated, the stress area of the magnetic sheets is increased, the stress direction of the rotor is increased, the stress stability of the rotor can be improved, and the performance of the motor can be improved.
Owner:ANHUI ZHOUSHUI ELECTRICAL CO LTD
Multi-coil selection in a charging device
Systems, methods and apparatus for wireless charging are disclosed. A method for operating a wireless charging device includes determining that a chargeable device is positioned proximate to a plurality of charging coils provided at a charging surface of the wireless charging device, identifying two or more charging configurations for the chargeable device, determining power loss while wirelessly transmitting power to the chargeable device for each charging configuration in the two or more charging configurations, and initiating charging of the chargeable device using a charging configuration associated with a lowest power loss to configure the wireless charging device. Each charge configuration includes at least one of the plurality of charging coils.
Owner:AIRA INC
A multi-coil driving based magnetoelectric logic gate circuit and a method for implementing the gate circuit
ActiveCN114221648BAc-dc conversion without reversalLogic circuits characterised by logic functionSoftware engineeringMagnetic logic
The application provides a kind of magnetic logic gate circuit based on multi-coil drive and gate circuit implementation method, belongs to the field of gate circuit structure.The gate circuit includes magnetic field excitation element, magnetic induction element and post-stage rectification module, wherein the magnetic field excitation element includes AC magnetic field excitation element and two DC magnetic field excitation elements, the AC magnetic field excitation element outputs AC magnetic field, which is used for magnetic induction element to generate magnetic-electric coupling effect, two DC magnetic field excitation elements provide DC magnetic field for magnetic induction element, the input end of two DC magnetic field excitation elements serves as two input ends of the magnetic logic gate circuit, the output end of the magnetic induction element is connected to the input end of the post-stage rectification module, the output end of the post-stage rectification module outputs DC voltage, which serves as the output end of the magnetic logic gate circuit.The application can adjust high and low level input according to the change characteristics of magnetic-electric coefficient, and the driving is simple with low failure rate.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
Antenna structure and electronic equipment
ActiveCN223230521UAntenna supports/mountingsRadiating elements structural formsMulti coilMechanical engineering
The utility model relates to an antenna structure and electronic equipment. The antenna structure comprises a substrate, a first coil and a second coil. The substrate includes a main body portion and a connection portion. The first coil and the second coil are attached to the same side of the substrate and respectively comprise a first bonding pad, a second bonding pad, a first pin and a second pin, wherein the first bonding pad and the second bonding pad are located on the main body portion, and the first pin and the second pin are located on the connecting portion. The first coil extends to the first pin from at least part of the main body portion around the first welding disc, the second coil extends to the second pin from the second welding disc around the main body portion, and the first welding disc and the second welding disc are arranged at intervals. The two ends of the metal connecting bridge are connected with the first bonding pad and the second bonding pad respectively, so that the first coil and the second coil are electrically connected. According to the antenna structure, the coil layout is optimized, that is, the multiple coils are attached to the same side of the substrate, and the coils are connected through the metal connecting bridges, so that the number of layers of the coils can be effectively reduced, the production cost of the antenna structure is reduced, and the design of the arrangement of the coils on the same side can reduce signal loss and improve the performance and efficiency of the antenna.
Owner:ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
Jointless superconducting multi-coils
PCT designated stageWO2025253027A3Superconducting magnets/coilsCoils manufactureMulti coilMechanical engineering
Owner:ETH ZURICH
Multi-coil array electromagnetic forming device based on modular coil units
The multi-coil array electromagnetic forming device comprises a workbench and at least one coil mounting plate, the coil mounting plates are arranged on the front side, the rear side, the left side, the right side or the top face of the workbench, and at least one coil unit is arranged on each coil mounting plate through a moving assembly. The coil units are installed on the moving assembly through pluggable structures, and the moving assembly not only can adjust the distance between the adjacent coil units, but also can adjust the moving distance of all the coil units. The coil units can be installed on the coil installation plates through the pluggable structures, then the coil installation plates are installed on the corresponding faces of the workbench, coil arrays can be formed on the workbench, electromagnetic force needed for part forming is provided, and the parts can be formed through the different coil units and the coil installation plates on the different sides. And different types of coil arrays can be formed, so that the forming requirements of diversified parts are met.
Owner:CHONGQING UNIV
Multi-coil incremental permeability dynamic detection probe and yield strength detection method
ActiveCN114859277BEfficient mechanical propertiesEfficiently predict mechanical propertiesNuclear energy generationPermeability measurementsComputational physicsMulti coil
The application provides a multi-coil incremental permeability dynamic detection probe and a yield strength detection method. The probe mode of the multi-coil is used to detect different positions of materials in different magnetization states at the same time. In the movement process, the mechanical properties of the materials can be quickly and efficiently predicted. Compared with the traditional static detection mode, the dynamic detection probe can be used for continuous detection, so as to improve the detection efficiency and realize the purpose of pipeline detection operation.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Transmitting coil of underground high-power in-hole transient electromagnetic instrument
PendingCN121232290AElectric/magnetic detection for well-loggingAcoustic wave reradiationTransmitter coilElectrical resistance and conductance
The invention belongs to the technical field of transient electromagnetic detection, and particularly relates to a transmitting coil of an underground high-power in-hole transient electromagnetic instrument, which adopts a laminated rectangular spiral winding mode and a multi-coil parallel transmitting technology. The stacked rectangular spiral winding can increase the effective area of a single-turn coil and improve the emission magnetic moment under the limitation of the length of a fixed enameled wire, the size of an exploring tube and coal safety explosion-proof voltage and current; multi-coil parallel emission reduces coil resistance and total inductance through in-phase parallel cascading, emission current is improved so as to further increase emission magnetic moment, turn-off time of a primary field is shortened, coal safety explosion-proof requirements can be met, detection capability of a transient electromagnetic instrument is enhanced, data reliability and accuracy are improved, and the method is suitable for popularization and application. The method is suitable for complex underground environment detection.
Owner:FUZHOU HUAHONG INTELLIGENT TECH
Three-phase inductance coil winding device and method
The invention belongs to the technical field of inductance equipment manufacturing, and particularly relates to a three-phase inductance coil winding device and method. Comprising a base, and a driving roller and two driven rollers are mounted at the top of the base; a magnetic ring is connected between the driving roller and the two driven rollers in an abutting mode. A first electric telescopic rod is further installed at the top of the base and located below the magnetic ring, and a wire hook is fixedly arranged at the end of the first electric telescopic rod. According to the invention, the problems of complex process and low efficiency caused by repeated winding and repeated cutting during preparation of the three-phase inductance coil can be avoided through one-time forming, and meanwhile, the magnetic ring is not damaged; the device can quickly adapt to the size change of the magnetic ring and the operation of the rollers, the problem that the magnetic ring cannot rotate due to inaccurate adjustment caused by respective adjustment of the rollers is solved, the device can be quickly reset, and the fine adjustment efficiency is greatly improved; the multi-coil winding and cutting device is suitable for large-current multi-coil winding and cutting at the same time.
Owner:WUHAN CHENYANG ELECTRONICS TECH
Coil electronic component
PendingUS20260142075A1Transformers/inductances coils/windings/connectionsUnwanted magnetic/electric effect reduction/preventionElectronic componentMulti coil
A coil electronic component includes: a body including a magnetic material, four or more coils embedded in the body, and a gap portion comprising a glass material disposed in at least one of regions between adjacent coiling in the four or more coils.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Winding tool suitable for superconducting multi-coil and multi-specification model module
The utility model discloses a winding tool suitable for superconducting multi-coil and multi-specification model modules, which comprises a winding main shaft, a plurality of superconducting coils are arranged at intervals in the axis direction of the winding main shaft, and each superconducting coil is arranged on the winding main shaft through a respective mounting bracket in a non-relative rotation manner. Each installation support comprises a pair of clamping plates which abut against the end portions of the two axial sides of the superconducting coil and a pair of radial clamping mechanisms which abut against the radial inner end portion and the radial outer end portion of the superconducting coil in a matched mode, and the center of each clamping plate is provided with a shaft hole through which the winding main shaft passes. According to the superconducting coil winding device, the multiple superconducting coils are installed on the winding main shaft through the installation support, the multiple superconducting coils can be wound at a time in the winding process, the preparation efficiency of the superconducting coils is improved, the requirement for production of a large number of or large batches of superconducting coils can be met, and the production cost is reduced.
Owner:YAN CHAOYUAN (SHANGHAI) TECHNOLOGY CO LTD
Balanced multi-coil armature receiver
PendingDE102025110103A1Single transducer incorporationIn the ear hearing aidsElectric machineElectrical connection
A balanced armature receiver is disclosed, comprising a multi-coil motor located within a housing and including a movable armature connected to a diaphragm that separates an interior of the housing into a front and rear volume. The multi-coil motor is electrically connected to contacts of a terminal board having an integrated capacitor component, wherein electrical connections of the multi-coil motor and the capacitor component to the terminal board are configured to change an electrical impedance of the balanced armature receiver based on a frequency of an electrical signal applied to the multi-coil motor.
Owner:KNOWLES ELECTRONICS LLC
Accelerated search in a multi-coil wireless charging device
Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured to initiate a search for a chargeable device using analog pings transmitted through power transmitting coils associated with the charging surface, suspend the search when a response to an analog ping transmitted through a first power transmitting coil indicates that an object is located in proximity to the wireless charging device, transmit a first digital ping through the first power transmitting coil, transmitting power through the first power transmitting coil when a response to the first digital ping is received, resume the search, and transmit power through a second power transmitting coil when a response to a second digital ping indicates that more efficient power transfer is available through the second power transmitting coil.
Owner:AIRA INC
Welding-free coil assembling method and device
The invention discloses an assembling method and device for a welding-free coil. The assembling method comprises the steps that the coil is positioned so that the coil can be within the detection range of a visual assembly; identifying the state of the coil through a visual component so as to judge whether the coil is qualified or not; if the coil is qualified, the stitch angle of the coil is identified through the visual assembly; and an angle compensation value is provided for a grabbing assembly according to the pin angle so that the grabbing assembly can assemble the coil and the shell at the correct angle. The visual assembly identifies the peak coordinates of the pins, calculates the height difference and the distance and compares the height difference and the distance with the preset threshold value, unqualified coils can be accurately screened out and scrapped, the problem that in the prior art, when multiple coils are pressed, a single coil fails and cannot be identified is solved, and the assembly quality is guaranteed from the source.
Owner:SHANGHAI QIANGU AUTOMOBILE TECH CO LTD +2