Abstract: An arrangement place for a device such as a rectifier and a power storage device is easily secured. At the time of power supply using a resonance phenomenon, a power-receiving device generates a magnetic field space having a lower magnetic field strength than other parts at or around the inner side of the power-receiving module, and this magnetic field space is used as the arrangement place of an electronic component. The power-receiving module includes a power-receiving resonance coil which is resonated with a power-supplying module and a power-receiving coil which partly overlaps the power-receiving resonance coil in a coil diameter direction and receives and supplies power from and to the power-receiving resonance coil.

Abstract: A thermal control method for a wireless power transmission apparatus configured to supply power, by changing a magnetic field, from a power-supplying module to a power-receiving module connected to a power-supplied device including a lithium ion secondary battery rechargeable using a constant current/constant voltage charging system. Heat generation in the wireless power transmission apparatus is controlled by adjusting a load change characteristic, which is represented by an amount of change in a value of input impedance Zin of the wireless power transmission apparatus for a predetermined period of charging time in constant voltage charging, by adjusting a value of a coupling coefficient between coils each included in the power-supplying module or the power-receiving module.

Abstract: An arrangement place for a device such as a rectifier and a power storage device is easily secured. At the time of power supply using a resonance phenomenon, a power-receiving device generates a magnetic field space having a lower magnetic field strength than other parts at or around the inner side of the power-receiving module, and this magnetic field space is used as the arrangement place of an electronic component. The power-receiving module includes a power-receiving resonance coil which is resonated with a power-supplying module and a power-receiving coil which partly overlaps the power-receiving resonance coil in a coil diameter direction and receives and supplies power from and to the power-receiving resonance coil.

Abstract: There is provided a wireless power transmission apparatus including: a power-supplying module configured to supply power to a power-receiving module by means of a resonance phenomenon which is established between the power-supplying module and the power-receiving module so that a magnetic field space having a lower magnetic field strength than that of nearby portions is formed; a magnetic field detector which is disposed at a position where the magnetic field space is formed and which is configured to detect the magnetic field strength; and a determination control device configured to determine whether there is an anomaly in power supply to the power-receiving module based on a value of the magnetic field strength detected by the magnetic field detector.

Abstract: There is provided a wireless power transmission apparatus in which a relationship among (i) a transmission state input impedance of the wireless power transmission apparatus in a situation where a power-supplying resonator and a power-receiving resonator are disposed to oppose each other, (ii) a metal foreign object placement state input impedance of the wireless power transmission apparatus in a situation where a metal foreign object is placed in the vicinity of the power-supplying resonator, and (iii) a standby state input impedance of a power-supplying module in a standby state, satisfies the following condition: the metal foreign object placement state input impedance>the standby state input impedance>the transmission state input impedance.

Abstract: Transmission efficiency is increased or decreased by a simple arrangement. A power-receiving resonance coil to which power is supplied by a resonance phenomenon of resonance with a power-supplying module, a power-receiving coil which receives the power from the power-receiving resonance coil, and a magnetic member which at least in part overlaps the power-receiving resonance coil in a radial direction in order to increase or decrease magnetic coupling in resonance are provided.

Abstract: A wireless power transmission apparatus, a supply power control method, and a manufacturing method of the wireless power transmission apparatus, with which supply power is controlled by adjusting the resonance frequency of a coil of a power-supplying device and/or the resonance frequency of a coil of a power-receiving device while power transmission efficiency is maintained, are provided. As a supply power control method for a wireless power transmission apparatus 1 which supplies power from a power-supplying module including a power-supplying resonator to a power-receiving module including a power-receiving resonator by changing a magnetic field, power supplied to a power-supplied electronic device is controlled by setting an input impedance Zin of the wireless power transmission apparatus by adjusting the resonance frequency of at least one of a power-supplying resonator and a power-receiving resonator.

Abstract: A circuit device includes: a transformation unit configured to output charged power of any battery of various types of batteries at a driving voltage of a driving component; a charging unit capable of charging the battery in a suitable charging manner by an input of outside power supplied from outside; an identifying unit configured to identify the type of the battery; and a charging and discharging control unit configured to control the charging unit so as to switch the charging manner depending on the type of the battery.

Abstract: An EBG structure of the present invention includes a ground substrate, a first dielectric layer disposed on the ground substrate, a first conductor pattern disposed on the first dielectric layer, and has an outer end and an inner end, the outer end being electrically connected to the ground substrate, a second dielectric layer disposed on the first conductor pattern, and a second conductor pattern disposed on the second dielectric layer, and has a center part and an outer end, the center part being electrically connected to the inner end of the first conductor pattern.

Abstract: A method for controlling a receiving voltage whereby a receiving voltage applied to a device to be powered by adjusting the capacitance and so forth of a circuit element provided in the wireless power transmission device, a wireless power transmission device adjusted by the method for controlling a receiving voltage, and a method for manufacturing the wireless power transmission device. This method controls a receiving voltage for a device to be powered when power is supplied from a power supply module that constitutes a wireless power transmission device to a power receiving module with a magnetic field being changed and the supplied power is fed to the device to be powered connected to the power receiving module. The driving frequency for the power supplied to the power supply module is not a resonant frequency in the power supply module and the power receiving module.

Abstract: The purpose of the present invention is to provide: a magnetic element for wireless power transmission, which is capable of feeding power with high power transmission efficiency, while increasing the heat dissipation performance; and a method for manufacturing the magnetic element for wireless power transmission magnetic element for wireless power transmission have configurations that respectively comprise planar coils through which an alternating current passes and magnetic parts which are arranged in parallel in the intervals between the copper wires of the planar coils when viewed in cross section. The magnetic parts comprise an epoxy resin in which iron-based amorphous particles FINEMET® serving as magnetic particles are dispersed, and the magnetic parts are integrated with the planar coils by being bonded to the planar coils in an electrically insulated state by means of the epoxy resin.

Abstract: A wireless power transmission apparatus with which an input impedance value is set by adjusting coupling coefficients between coils provided to a power supply device that wirelessly transmits power and a power receiving device, without adding new equipment, thereby enabling the power (the current) to be supplied to be controlled; a supply power control method; and a manufacturing method for the wireless power transmission apparatus. The supply power control method for the wireless power transmission apparatus, wherein power is supplied from a power supply module to a power receiving module by altering a magnetic field, involves adjusting coupling coefficient values between adjacent coils so as to set an input impedance value of the wireless power transmission apparatus to a desired value, and adjust the power to be supplied.

Abstract: An arrangement place for a device such as a rectifier and a power storage device is easily secured. At the time of power supply using a resonance phenomenon, a power-receiving device generates a magnetic field space having a lower magnetic field strength than other parts at or around the inner side of the power-receiving module, and this magnetic field space is used as the arrangement place of an electronic component. The power-receiving module includes a power-receiving resonance coil which is resonated with a power-supplying module and a power-receiving coil which partly overlaps the power-receiving resonance coil in a coil diameter direction and receives and supplies power from and to the power-receiving resonance coil.

Abstract: A portable device is arranged to include a secondary battery, a driving component driven by charged power of the secondary battery, a charging unit configured to charge the secondary battery by outside power, a transformation unit (processing unit) configured to output the charged power of the secondary battery at a driving voltage of the driving component, a detection unit configured to detect the input of the outside power to the charging unit, and a switching controller configured to switch the state of the transformation unit from an operation state to a stopped state only when the input of the outside power to the charging unit is detected by the detection unit.

Abstract: In order to adjust the load fluctuation response of an input impedance (i.e., a change in the value of an input impedance in a wireless power transmission device relative to the unit variation of a load impedance of a device to be supplied with power) in a wireless power transmission device wherein a magnetic field is altered to supply power from a power supply module to a power-receiving module to which devices to be supplied with power (i.e., a stabilizing circuit, a charging circuit and a lithium-ion secondary battery) are connected, the value of a coupling coefficient between a power supply coil and a power supply resonator, and the value of a coupling coefficient between a power-receiving resonator and a power-receiving coil are each adjusted.

Abstract: A wireless power transmission apparatus supplies power from a power-supplying module equipped with a power-supplying coil and a power-supplying resonator to a power-receiving module equipped with a power-receiving coil and a power-receiving resonator by changing magnetic field. In a supply power control method for the wireless power transmission device, the power is supplied with such a value that the driving frequency of the power supplied to the power-supplying module does not match with the resonance frequencies of the power-supplying module and the power-receiving module. The element values of circuit elements constituting the power-supplying module and the power-receiving module are used as parameters, and by changing each of the parameters, the input impedance (Zin) of the wireless power transmission apparatus is set to adjust the power to be supplied.

Abstract: A portable device has an outer wall member exposed outside, and a power-receiving module at least a portion of which is arranged along the surface shape of the outer wall member to receive power by way of the resonance phenomenon. The power-receiving module has a power-receiving resonance coil and a power-drawing coil. The portable device creates a space portion with a weak magnetic field at the inner position or the peripheral position of the power receiving module during power feeding using the resonance phenomenon so that an electronic device is arranged in the space.

Abstract: In the wireless power transmission apparatus, in which power is supplied by resonance phenomenon from a power-supplying module to a power-receiving module that is connected to a lithium ion secondary battery capable of being charged by a constant current/constant voltage charging system, a variable parameter, which constitutes the power supply module and the power receiving module, is set such that the transmission characteristic value for the drive frequency of power supplied to the power-supplying module exhibits double-hump characteristics. Thus, adjustment of the drive frequency sets the variation tendencies of the input impedance of the wireless power transmission apparatus during constant voltage charging to adjust the variation tendencies of the input current of the wireless power transmission apparatus, and enables the heat generated by the wireless power transmission apparatus to be controlled.

Abstract: A wireless power transmission apparatus 1 includes a power-supplying module 2, a power-receiving module 3, a phase detector 4, and a control device 5, and is set so that its transmission characteristic with respect to the power-source frequency has a double-hump characteristic. The control device 5 determines whether to supply power to the power-supplying module 2, based on variation in the phase of the input impedance Zin in the power-supplying state and that in the standby state, which is detected by a phase detector 4.

Abstract: In the present invention, the power consumption of a power-supplying module is reduced in the case (standby state) that the power-supplying module and a power-receiving module are not in a power-suppliable region without providing a new device while suppressing the strength of a magnetic field generated in the vicinity of the power-supplying module and the power-receiving module. The wireless power transmission apparatus is such that the power-supplying module, which supplies power using a resonance phenomenon to the power-receiving module from the power-supplying module connected to an AC power source, is operated at a power source frequency such that the input impedance of the power-supplying module in a standby state in which a magnetic field space is not formed is greater than the input impedance of the power-supplying module and power-receiving module in a power-supplying state in which a magnetic field space is formed.