Abstract: A wireless power supply wiring circuit board includes a first insulating layer, a conductive layer that is on one surface in the thickness direction of the first insulating layer and includes a wiring portion, a transceiver circuit portion that is electrically connected to the wiring portion, a component mounting portion which is on the other surface in the thickness direction of the first insulating layer and on which an electronic component electrically connected to the wiring portion is mounted, and a metal dam portion provided around at least part of the component mounting portion.

Abstract: A wireless power supply wiring circuit board includes an insulating layer, a first wiring portion which is provided on one surface side in the thickness direction of the insulating layer, a first region including a second wiring portion which is provided on the other side in the thickness direction of the insulating layer, a second region in which the first wiring portion and the second wiring portion are provided on the same flat plane, a transceiver circuit portion, and a component mounting circuit portion which is electrically connected to the transceiver circuit portion.

Abstract: A wired circuit board for battery includes a stainless steel layer, an insulating base layer, and a conductor layer sequentially toward one side in the thickness direction. The stainless steel layer is electrically connected to the conductor layer. The stainless steel layer includes a first laser weld portion that can be laser welded. The first laser weld portion is exposed to the one side and the other side in the thickness direction.

Abstract: Recharging of a secondary battery within a short time after the battery is fully charged is prevented. A method of achieving this prevention includes: a charging step of charging a secondary battery by external power until a charging amount of the secondary battery becomes equal to a fully charged amount, while stopping a driving component; and a stop continuation step of stopping the charging of the secondary battery by the external power and stopping a driving component in a stop continuation period in which the charging amount of the secondary battery decreases from the fully charged amount to a predetermined charging amount.

Abstract: A wireless power transmission system includes a power-supplying device including an electronic oscillator that generates electric power having a frequency of 1 MHz or more and 5 MHz or less, and a power-supplying coil member in which the electric power flows; and a power-receiving device including a power-receiving coil member that is capable of generating electric power based on the magnetic field generating from the power-supplying coil member, wherein the power-receiving coil member is a sheet coil including an insulating layer and a first coil pattern disposed at one side of the insulating layer, the first coil pattern is composed of wires, and the wires are disposed in spaced apart relation from each other with a predetermined space provided therebetween in the radial direction of the first coil pattern.

Abstract: A portable device including a secondary battery, a plurality of driving components driven by charged power of the secondary battery, a charging unit configured to charge the secondary battery by an input of outside power supplied from outside of the portable device, a plurality of transformation units each configured to output the charged power of the secondary battery at a driving voltage of a corresponding one of the plurality of driving components, a detection unit configured to detect the input of the outside power to the charging unit, and a switching controller configured to switch a state of one of the plurality of transformation units from an operation state to a stopped state responsive to detecting the input of the outside power to the charging unit causing only the corresponding one of the plurality of driving components to stop operation during charging of the secondary battery.

Abstract: A portable device including a secondary battery, a plurality of driving components driven by charged power of the secondary battery, a charging unit configured to charge the secondary battery by an input of outside power supplied from outside of the portable device, a plurality of transformation units each configured to output the charged power of the secondary battery at a driving voltage of a corresponding one of the plurality of driving components, a detection unit configured to detect the input of the outside power to the charging unit, and a switching controller configured to switch a state of one of the plurality of transformation units from an operation state to a stopped state responsive to detecting the input of the outside power to the charging unit causing only the corresponding one of the plurality of driving components to stop operation during charging of the secondary battery.

Abstract: A wireless power transmission system includes a power transmission device including a plurality of power transmission portions, and a power receiving object including a power receiving portion capable of receiving an electric power wirelessly transmitted from the power transmission portion. Of the plurality of power transmission portions, a specific power transmission portion transmits the electric power to the power receiving portion.

Abstract: A battery pack includes a secondary battery, a coil member, a circuit board, a housing, and a metal member. The metal member has a plurality of strip portions extending along the direction orthogonal to the thickness direction of the housing from the inside of the housing toward the peripheral end edge, and connected to each other inside the housing. The plurality of strip portions each has an end edge positioned at the peripheral end edge of the housing, and each of the end edges of the plurality of strip portions is position defined at different positions at the peripheral end edge of the housing.

Abstract: A battery pack includes a secondary battery having a battery negative electrode terminal disposed at one side in thickness direction of the secondary battery and a battery positive electrode terminal disposed at the other side in thickness direction of the secondary battery; a coil member; a circuit board electrically connected with the battery negative electrode terminal, the battery positive electrode terminal, and the coil member; and a housing accommodating the secondary battery, the coil member, and the circuit board, wherein the battery negative electrode terminal is exposed to the outside of the housing.

Abstract: A variable magnetic field in which a power-supplying coil and a power supplying resonator exist is generated only by the power-supplying coil. Power-supplying coils and each of which generates a variable magnetic field due to the supply of a variable current via a first current path on one coil end a side and a second current path on the other coil end side; resonance capacitors which are provided on the first current path and the second current path; and a power-supplying coil short-circuit mechanism which is able to cause at least one of the power-supplying coils and to function as a power supplying resonator by allowing the end portions and of the first current path and the second current path to short-circuit with each other are provided.

Abstract: A magnetic field which is partially a variable magnetic field with high or low magnetic field strength is formed at a predetermined region. A plurality of coil pieces and generating a variable magnetic field and a power-supplying coil which is provided to generate an induced current for at least one of the coil pieces and are provided, and coil ends of two or more of the coil pieces and are connected to each other.

Abstract: A magnetic field is formed at a predetermined region. A magnetic field formation device configured to generate a variable magnetic field at a predetermined region includes power supplying resonators. All of the power supplying resonators are provided so that coil surfaces oppose the predetermined region, and at least one of the power supplying resonators is provided to have a coil surface direction intersecting with the coil surface direction of the other one of the power supplying resonators.

Abstract: A magnetic field is formed at a predetermined region. A magnetic field formation device configured to generate a variable magnetic field at a predetermined region A includes: at least one power supplying resonator configured to generate the variable magnetic field; and power-supplying coils configured to generate an induced current in the at least one power supplying resonator, all of the power-supplying coils and the at least one power supplying resonator being disposed so that coil surfaces oppose the predetermined region A, and at least one of the power-supplying coils being disposed to have a coil surface direction which intersects with coil surface directions of the other power-supplying coils.

Abstract: A wireless power transmission system includes a power transmission device including a plurality of power transmission portions, and a power receiving object including a power receiving portion capable of receiving an electric power wirelessly transmitted from the power transmission portion. Of the plurality of power transmission portions, a specific power transmission portion transmits the electric power to the power receiving portion.

Abstract: A driving device is easily handled at the start and end of charging. A housing cup which includes a bottom surface portion on which at least one driving device including a power-receiving device is placed and a side face portion extending outward from the peripheral edge portion of the bottom surface portion and is formed so that an upper peripheral edge portion of the side face portion is an opening portion, and a magnetic field formation device which is configured to generate a variable magnetic field at a housing region surrounded by the bottom surface portion and the side face portion to allow the power-receiving device to receive power irrespective of the direction and position of the power-receiving device are provided.

Abstract: Frequent replacement of a battery is avoided even if power consumption is large, and the structure is simplified and waterproofness is improved. Furthermore, cost reduction is achieved because driving components are selectable from components with variously different operating voltages. A hearing aid includes a secondary battery having a nominal voltage higher than a nominal voltage of an air battery, driving components driven by power at different voltages supplied from the secondary battery, and a transformation unit configured to output the charging power of the secondary battery at a voltage suitable for driving each driving component.

Abstract: A wireless power transmission system includes a power-supplying device including an electronic oscillator that generates electric power having a frequency of 1 MHz or more and 5 MHz or less, and a power-supplying coil member in which the electric power flows; and a power-receiving device including a power-receiving coil member that is capable of generating electric power based on the magnetic field generating from the power-supplying coil member, wherein the power-receiving coil member is a sheet coil including an insulating layer and a first coil pattern disposed at one side of the insulating layer, the first coil pattern is composed of wires, and the wires are disposed in spaced apart relation from each other with a predetermined space provided therebetween in the radial direction of the first coil pattern.

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 regard to a hearing aid and a hearing aid charging system, frequent replacement of a battery is avoided even if power consumption is large, and the structure is simplified and waterproofness is improved. A Hearing aid includes a secondary battery having a nominal voltage higher than a nominal voltage of an air battery, a driving component driven by power supplied from the secondary battery, and a transformation unit configured to output the charging power of the secondary battery at a voltage suitable for driving the driving component.