Disclosed are a high-temperature superconducting suspension type wireless power transmission device and an assembly method thereof. The device comprises an alternating current power supply, wherein the alternating current power supply is electrically connected with a transmitting coil, and the transmitting coil is made of high-temperature superconducting materials; a suspended matter is mounted above the transmitting coil, the suspended matter is electrically connected with a receiving coil corresponding to the transmitting coil, and a plurality of permanent magnets fixedly connected with the suspended matter are uniformly mounted along the periphery of the receiving coil; and the transmitting coil is located in a low-temperature container to maintain a superconducting state. In combination with the superconducting magnetic suspension technology and the superconducting wireless charging technology, power is stored without the need of a complex energy storage device.

A multipurpose electrical assembly is provided that includes a module receiving an alternating current from a power source in a ceiling and converting the alternating current source to a direct current source. The multipurpose electrical assembly also includes a plurality of devices each having a first connector on a first surface for connecting to the assembly and receiving electrical power from a preceding device and a second connector on a second opposing surface for receiving a following device to be connected to the assembly and for transferring electrical power to the following device. A first device of the plurality of devices attaches to the module, and the plurality of devices can be arranged in any order.

An auxiliary power receiving device includes a power receiving unit configured to receive power from a power transfer signal, which is used to supply power from a power transmitting device to a power receiving device, a notification unit configured to be provided on a main surface of a plate-shaped member, and a notification controlling unit configured to control a notification performed by the notification unit in accordance with a power reception condition of the power transfer signal at the power receiving unit.

An auxiliary power receiving device includes a power receiving unit configured to receive power from a power transfer signal, which is used to supply power from a power transmitting device to a power receiving device, a notification unit configured to be provided on a main surface of a plate-shaped member, and a notification controlling unit configured to control a notification performed by the notification unit in accordance with a power reception condition of the power transfer signal at the power receiving unit.

Wireless power transmission (WPT) systems are provided. For example, the WPT system can use one or more power transmitting coils and a receiver for electromagnetically coupled wireless power transfer. The electrodynamic receiver can be in the form of an electrodynamic transducer where a magnet is allowed to oscillate near a receiving coil to induce a voltage in the receiving coil, a piezoelectric transducer where the magnet causes a vibrating structure with a piezoelectric layer to move, an electrostatic transducer where movement of the magnet causes a capacitor plate to move, or a combination thereof. An alternating magnetic field from the transmitting coil(s) excites the magnet in the receiver into mechanical resonance. The vibrating magnet then functions similar to an energy harvester to induce voltage/current on an internal coil, piezoelectric material, or variable capacitor. Embodiments utilize magnetic coupling and electromechanical resonance for safe, spatially distributed, low-frequency power delivery to portable devices.

Wireless power transmission (WPT) systems are provided. For example, the WPT system can use one or more power transmitting coils and a receiver for electromagnetically coupled wireless power transfer. The electrodynamic receiver can be in the form of an electrodynamic transducer where a magnet is allowed to oscillate near a receiving coil to induce a voltage in the receiving coil, a piezoelectric transducer where the magnet causes a vibrating structure with a piezoelectric layer to move, an electrostatic transducer where movement of the magnet causes a capacitor plate to move, or a combination thereof. An alternating magnetic field from the transmitting coil(s) excites the magnet in the receiver into mechanical resonance. The vibrating magnet then functions similar to an energy harvester to induce voltage/current on an internal coil, piezoelectric material, or variable capacitor. Embodiments utilize magnetic coupling and electromechanical resonance for safe, spatially distributed, low-frequency power delivery to portable devices.

Methods and systems for charging a device. The method may involve providing a first housing and a second housing, wherein each housing is configured with a first coil, a second coil, and control logic to control the functioning of their respective first and second coils depending on the orientations of the housings. The method may further involve physically linking the first housing and the second housing via a first flexible connection.

Methods and systems for charging a device. The method may involve providing a first housing and a second housing, wherein each housing is configured with a first coil, a second coil, and control logic to control the functioning of their respective first and second coils depending on the orientations of the housings. The method may further involve physically linking the first housing and the second housing via a first flexible connection.

Provided is a system for communication. The system includes: a basic function module; at least one extended function module; a first near-field communication transceiving unit and a first near-field communication antenna unit, located on the basic function module; and at least one second near-field communication transceiving unit and at least one second near-field communication antenna unit, located on each of the at least one extended function module. The first near-field communication antenna unit and the at least one second near-field communication antenna unit respectively comprise a first loop antenna and a second loop antenna which are printed on a printed circuit board.

The invented power feeding system includes power transmitting and power receiving devices. The power transmitting device includes an AC power source, a first electromagnetic induction coil, a first resonant coil, and a first capacitor. The power receiving device includes an antenna unit including a second resonant coil, a second capacitor, and a second electromagnetic induction coil; a charging circuit unit including a rectifier circuit, a power storage device, a current detection circuit for detecting a current value supplied to the power storage device, and a voltage detection circuit for detecting a voltage value applied to the power storage device; and a communication control unit including a control circuit for generating a selection signal based on the detected current value and the detected current voltage, a plurality of switches to be turned on or off by the selection signal, and passive elements electrically connected to the plurality of switches.