Abstract: A coil component includes a core including a winding core portion, a first flange portion, and a second flange portion, and a first wire and a second wire that are wound around the winding core portion in the same direction and that form a winding portion. The winding portion includes a second intersecting portion along a third side surface of the winding core portion at a position on the winding portion nearest to the second flange portion.

Abstract: According to one embodiment, a power feeding system includes power receiving units, communication units, and a power feeding unit. The power feeding unit is configured to stop feeding power to a first power receiving unit when the receiving level is lower than a first reference value, feed power to a second power receiving unit, stop feeding power to the second power receiving unit, and resume feeding power to the first power receiving unit.

Abstract: A power receiving device includes: power receiving unit configured to receive power wirelessly from a power transmitting device; receiving unit configured to receive first information related to a voltage of an inverter included in the power transmitting device from the power transmitting device; and transmitting unit configured to transmit a specific signal to the power transmitting device on the basis of second information which is determined on the basis of the first information, the power transmitting device that has received the specific signal restricting the voltage of the inverter.

Abstract: Various embodiments of a wireless connector system are described. The system has a transmitter module and a receiver module that are configured to wirelessly transmit electrical energy and/or data via near field magnetic coupling. The wireless connector system is designed to increase the amount of wirelessly transmitted electrical power over a greater separation distance. The system is configured with various sensing circuits that alert the system to the presence of the receiver module to begin transfer of electrical power as well as undesirable objects and increased temperature that could interfere with the operation of the system. The wireless connector system is a relatively small footprint that is designed to be surface mounted.

Abstract: When a communication unit receives an end power transfer (EPT) packet including information about a power transmission stop period from a power reception apparatus, a power transmission apparatus controls a power transmission coil to transmit a checking signal for checking existence of the power reception apparatus during the power transmission stop period, detects at least one of a voltage or a current applied to the power transmission coil when the checking signal is transmitted, and determines whether the power reception apparatus that has transmitted the EPT packet exists, based on the detection result.

Abstract: A wireless power supply apparatus that supplies power to a reception apparatus in a wireless manner, the wireless power supply apparatus including: a power source apparatus that outputs an AC power, a transmission coil electrically connected to the power source apparatus; and a setting circuit interposed between the power source apparatus and the transmission coil, setting the transmission coil to be in either a power feeding state or a standby state, wherein the setting circuit is provided separately from the power source apparatus.

Abstract: A dual-mode multi-coil wireless power transfer system includes a control unit and a transmitter unit. The transmitter unit may wirelessly transmit electric power to an external receiver coil. The transmitter unit include a plurality of transmitter modules. Each of the plurality of transmitter modules may operate in at least one of a power transfer mode and a leakage magnetic field shield mode. The control unit controls each of the plurality of transmitter modules to operate in at least one of the power transfer mode and the leakage magnetic field shield mode or to be turned off.

Abstract: The present invention relates to magnetic structures for wireless power transfers systems. In particular the invention relates to improved magnetic and ferrite layouts as well as pad designs and methods of predicting and preventing thermal failure of high-power ferrite structures. In part it relates to a wireless power transfer pad magnetic structure comprising at least two adjacent blocks are spaced apart by an inter-section spacing configured to reduce circulating flux in the layer. In part it relates to a wireless power transfer pad magnetic structure comprising a first surface configured to locate nearer a wireless power transfer coil than a second surface wherein the relative magnetic permeability of the magnetic structure increases with distance from the first surface. In part it relates to a method of preparing a magnetically permeable block for a wireless power transfer pad, the method comprising: thermally pre-cracking the magnetically permeable block.

Abstract: The present disclosure relates to an electrical line, a coil and an inductive power transfer device. The electrical line comprises a conductor carrier having at least two substantially parallel carrier layers and a plurality of circuit traces arranged on at least three different, substantially parallel carrier surfaces of the carrier layers. A single circuit trace of the plurality of circuit traces has at least three circuit track sections arranged on at least three different carrier surfaces. Two respective circuit trace sections of a circuit trace are connected to one another by a vertical connection extending transversely to the carrier surfaces and through at least one carrier layer. A plurality of circuit trace sections of different circuit traces is arranged on a carrier surface, which run parallel to one another at least in some areas and which run along a longitudinal extension direction at least in some areas.

Abstract: The present disclosure may provide a triboelectric generator equipped in an electronic device, the triboelectric generator including a power generating unit configured to generate electricity based on an ultrasound wave provided from outside, a first silicon layer arranged between an upper surface of the power generating unit and an inner surface of the electronic device, a second silicon layer arranged on a lower surface of the power generating unit, and a housing arranged to surround an outer periphery of the power generating unit, the first silicon layer, and the second silicon layer.

Abstract: A hybrid wireless power device comprises a single coil operated at two or more resonance frequencies. For example, a control circuit controls the voltage applied across a power transmission coil of a hub, and a frequency control circuit comprises a switch, such as a solid state relay, for switching between a first capacitance and a second capacitance for shifting the resonance frequency from a first resonant frequency to a second resonant frequency.

Abstract: A coil component includes a drum core including a winding core portion and first and second flange portions, and first and second wires. A portion of the first wire that first comes into contact with an outer peripheral surface of the winding core portion when the first wire is traced from a first wire end to a second wire end is defined as a 1.0 turn portion of the first wire. A portion of the second wire where an angular position thereof about a central axis first coincides with an angular position of the 1.0 turn portion of the first wire, on a side of a second negative direction with respect to the central axis, when the second wire is traced from a first wire end to a second wire end is defined as a 1.0 turn portion of the second wire.

Abstract: An inverter circuit includes an input inductor connected in series between a direct-current power supply and a switching element partially constituting the inverter circuit, a high-frequency resonant circuit that includes a high-frequency resonant capacitor and a high-frequency resonant inductor and is connected in parallel to a switching element, and a switch having one end connected to the direct-current power supply and the other end connected to the high-frequency resonant capacitor and the high-frequency resonant inductor. The input inductor is connected in parallel to the high-frequency resonant inductor and the switch.

Abstract: A wireless power receiver may comprise: a power pick-up circuit configured to receive power wirelessly from a wireless power transmitter including a plurality of primary coils by magnetic coupling to the wireless power transmitter at an operating frequency and to convert an alternating current signal induced by the wireless power into a direct current signal; a communication/control circuit receiving the direct current signal supplied from the power pick-up circuit and including an in-band communication module which communicates with the wireless power transmitter by using the operating frequency, and an out-band communication module which communicates with the wireless power transmitter by using any frequency except for the operating frequency; and a load configured to receive the direct current signal supplied from the power pick-up circuit, wherein the communication/control circuit transmits a message informing of the start of power allocation negotiation, to other wireless power receivers by using the out

Abstract: A transmit resonator for use in a wireless power transfer system is provided. The transmit resonator includes a core defining an annular groove, a coil element disposed within the annular groove, and a housing surrounding the core and the coil element. The housing includes a casing. and a metal plate, wherein the metal plate is positioned on a side of the transmit resonator that is opposite a receive resonator during operation of the wireless power transfer system, and wherein the metal plate facilitates reducing far-field electromagnetic emissions and improving cooling of the wireless power transfer system.

Abstract: A high-voltage system for a motor vehicle may include: an electric high-voltage energy storage device; a high-voltage onboard electrical system having onboard electrical system-side HV connections and a capacitor assembly comprising an X-capacitor and two Y-capacitors; a switching device connected to the high-voltage energy storage device and the high-voltage onboard electrical system; and a discharge device for discharging the capacitor assembly, having a discharge resistor connected to the onboard electrical system and a passive discharge circuit per Y-capacitor, wherein the discharge circuits discharge the Y-capacitors, and each discharge circuit has a diode poled in a blocking direction dropping at the Y-capacitors when the switching device is closed, and a diode of one discharge circuit is poled in the passage direction, resulting from the charging of the Y-capacitors and the potential coupling of the onboard electrical system-side HV connections caused by the discharge resistor, in order to discharge th

Abstract: A nerve electrostimulation system using capacitive coupling energy transmission, in-vivo nerve electrostimulator, and in-vitro energy controller thereof. The nerve electrostimulation system using capacitive coupling energy transmission includes an in-vivo nerve electrostimulator and an in-vitro energy controller, and may also include a program controller having an upper computer control APP. The in-vivo nerve electrostimulator includes at least one stimulator coupling capacitor pole, a stimulator compensation resonant network, a rectification circuit, a filter capacitor, a main control chip, a stimulator harmonic communication module, and a plurality of sets of stimulation electrodes and corresponding balance capacitors, wherein the stimulator coupling capacitor pole is coupled with an energy controller coupling capacitor pole of the in-vitro energy controller, thereby receiving electrical energy from the in-vitro energy controller and achieving information exchange.

Abstract: A power receiver (105) comprises an input circuit (107, 503) with a receiver coil (107) extracting power from a power transfer signal generated by a power transmitter (101). A variable load (511) applies a modulation loading to the input circuit (107, 503) and a data transmitter (509) transmit data symbols to the power transmitter (101) by load modulating the power transfer signal during communication time intervals interspersed by non-communication time intervals during which no data symbols are transmitted. The data symbols are represented by modulation loading patterns and the data transmitter (509) is arranged to control the variable load (511) to repeatedly change the modulation loading during non-communication time intervals. The approach may provide improved communication and power transfer operation, and may in particular reduce transients, e.g. in the supply voltage provided to a load of the power receiver (105).

Abstract: An electrohydraulic shock wave generator includes a capacitor configured to store electrical energy and a discharge circuit configured to discharge the capacitor through an electrode assembly positioned in an electrically conductive medium to generate shock waves. A diode suppression network is positioned within the discharge circuit and configured to prevent reverse voltage transients and suppress discharge oscillations. The diode suppression network converts underdamped oscillatory discharge into critically damped discharge waveform to produce shock waves having narrow pulse widths. The generator may include low-resistance discharge circuits with conductors having greater cross-sectional areas and total circuit resistance of less than 0.025 ohms. The capacitor may have a capacitance of 25 nanofarads or less and store electrical energy at voltages between 15 kilovolts and 60 kilovolts.

Abstract: A power receiver (105) communicates to a power transmitter (101) using load modulation data symbols modulated by a chip sequence with a chip sequence being divided into load time intervals with different modulation loads. The power transmitter (101) comprises a receiver (207) which includes a load measurer (209) determining measured load values of the power transfer signal for load time intervals. A chip determiner circuit (211) determines a received chip sequence from the measured load values where the received chip sequence comprises a sequence of chip values. Each chip value is determined in response to a difference between measured load values for at least two modulation load time intervals of the chip. A store (215) stores a set of chip sequences with each chip sequence linked to a data symbol. A detector (213) detects a received data symbol value in response to a correlation between the received chip sequence and chip sequences of the set of chip sequences.