The present application describes a wireless power reception device comprising: a power pickup circuit configured to receive, from a wireless power transmission device, a wireless power generated on the basis of magnetic coupling in a power transmission phase; and a communication and control circuit configured to transmit, to the wireless power transmission device, a configuration packet including first dual data stream information, or to receive, from the wireless power transmission device, a capability packet including second dual data stream information. Upper layer data can be effectively exchanged by clearly recognizing whether the upper layer data is bidirectionally transmitted between the wireless power transmission device and the wireless power reception device, and accuracy of power loss and saving of processing resources can be achieved by synchronizing the timing of calculating the power loss between the wireless power transmission device and the wireless power reception device.

A method and apparatus are provided for determining, by a wireless power transmitter, whether a wireless power receiver is removed from a wireless power network managed by the wireless power transmitter. The method includes transmitting a command signal to report power information of the wireless power receiver at stated periods; determining whether a report signal corresponding to the command signal is received from the wireless power receiver; and determining that the wireless power receiver is removed from the wireless power network, if the report signal is not received after transmitting the command signal a predetermined number of times at the stated periods.

A method and apparatus are provided for controlling wireless power in a wireless power network managed by a wireless power transmitter. The control method includes registering a wireless power receiver to a wireless power network corresponding to the wireless power transmitter; applying a charging power for charging the wireless power receiver to a resonator of the wireless power transmitter; detecting a change of magnitude of power applied to the resonator; detecting that a communication unit of the wireless power transmitter fails to receive a communication signal from the wireless power receiver a predetermined time; and in response to detecting the change of the magnitude of power applied to the resonator and that the communication unit fails to receive the communication signal from the wireless power receiver in the predetermined time, removing the wireless power receiver from the wireless power network.

According to the embodiments provided herein, power and data transfer system may include a primary inductive, a secondary inductive coupler, a power source, and a controller. The primary inductive coupler may forms a flat front face. The primary inductive coupler may include a primary winding wound around a primary core. The primary core may be adjacent to the flat front face. The secondary inductive coupler may be separated from the flat front face of the primary inductive coupler by a fluid. The secondary inductive coupler may include a secondary winding. The power source may generate a current in the primary winding of the primary inductive coupler and a magnetic field in the secondary winding of the secondary inductive coupler. The controller may execute machine readable instructions to receive charging data via a feedback loop and adjust the current based upon the charging data.

A matrix-type flexible charging pile and a charging method capable of dynamically allocating power are disclosed in the present invention, and the method comprises the steps of: S1, connecting each charging terminal to a corresponding electric vehicle; S2, receiving a charging power demand of the electric vehicle and comparing the charging power demand; S3, calculating the number of charging modules required to be additionally allocated to the present DC-bus and delivering it to a matrix controller; and S4, allocating the required number of charging modules in a dynamic power region to the corresponding DC bus and switching the module communication line to a corresponding communication bus synchronously. The implementation of the charging method capable of dynamically allocating power can satisfy the electric vehicle charging demands for different energy storage capacities and different charging rates, as well as improve the conversion efficiency and the utilization rate of the charging device further.

An apparatus and method for transmission of wireless power to a plurality of chargeable devices. The apparatus and method include and provide for a wireless power transmitter including a power transmitting element configured to use a current at a first level to wirelessly transmit power sufficient to provide power to one or more chargeable devices positioned within a charging region. The apparatus and method further include and provide for a controller to detect a subsequent chargeable device positioned within the charging region and to adjust the current from the first level to a default level prior to communication with the subsequent chargeable device.

A magnetic alignment system can include a primary annular magnetic alignment component and a secondary annular magnetic alignment component. The primary alignment component can include an inner annular region having a first magnetic orientation, an outer annular region having a second magnetic orientation opposite to the first magnetic orientation, and a non-magnetized central annular region disposed between the primary inner annular region and the primary outer annular region. The secondary alignment component can have a magnetic orientation with a radial component.

In one embodiment, an electric vehicle system includes a power system for charging a battery installed in an electric vehicle and comprising a bi-directional power and data connector for receiving power and data from or transmitting the power and data to an electric vehicle charging device, a communications system comprising a server and configured for receiving power from the power system and receiving data from or transmitting the data to the power system for download or upload at the electric vehicle charging device, and an authentication module for authenticating the electric vehicle charging device. A method is also disclosed herein.

An inductive charging system can include a transmitter device and a receiver device. The transmitter device may be adapted to detect when a receiver coil in the receiver device is coupled to a transmitter coil in the transmitter device. For example, the current input into a DC-to-AC converter in the transmitter device can be measured and coil coupling detected when the current equals or exceeds a threshold value.

An EV charging control apparatus may include a controller receiving a charging approval message for an EV from a charging management server, starting a charging to the EV in response to the charging approval message, measuring and accumulating an amount of energy charged to the EV, recognizing a charging termination operation from a user of the EV or the EV, and deriving charging information based on the amount of energy charged in response to the charging termination operation, and a short-range wireless communication module establishing a connection with a short-range wireless communication module mounted on the EV, and transmitting the charging information to the EV