A method comprises providing power from a battery to an external device using a first circuit; and receiving power from a first power source to provide power to the battery using a second circuit while providing power to the external device.

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.

Provided is an electronic device. The electronic device includes: a main body mounted with an electronic unit including a controller, including a bezel disposed at the outer side thereof, and having a locking groove formed in the bezel; and a band part mounted with an additional device for exchanging an electric signal with the electronic unit and an electronic part providing information related to the additional device for the electronic unit, and including a coupling part detachably coupled to the locking groove. Here, the controller switches an operation mode of the main body according to the information related to the additional device provided by the electronic part when the main body and the band part are coupled to each other. Thus, when the band part mounted with the additional device is connected to the main body, the operation mode of the main body is automatically switched to a mode corresponding to the additional device, thereby providing convenience of use.

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

A shared battery system includes a battery having unique identification information, a communication unit communication-connected with a user terminal to receive user information from the user terminal, and an authentication unit configured to perform user authentication based on the user information. A controller is configured to control the authentication unit to perform the user authentication when a communication connection with the user terminal is made, to control the battery to supply electrical energy to a shared mobility device based on a use approval of the shared mobility device when the battery is mounted to the mobility device, to acquire usage information of the shared mobility device therefrom when the electrical energy is supplied to the shared mobility device, and to control the communication unit to transmit the acquired usage information of the shared mobility device and status information of the battery.

A computer implemented method for managing charge availability of a charge unit (CU) to obtain charge for a battery of an electric vehicle (EV) is provided. The CU includes a computer for processing at least part of the method and for communicating with a server over a network. The method includes receiving, by the server, status information from the computer of the CU. The method includes sending to the computer of the CU instructions to make a reservation for the CU. The reservation is for a user account that has requested a desire to charge the battery of the electric vehicle of the user at the CU or another CU. The method includes sending, by the server, a confirmation for the reservation to the user account. The confirmation is viewable via a device having access to the server via the user account. The method includes sending, by the server, a data regarding a time of availability of the CU to the user account for the reservation. The computer of the CU is configured to display a visual indicator regarding the reservation of the CU.

A quick charging method, a power adapter and a mobile terminal are provided. The method is applied to the power adapter, the power adapter is coupled to the mobile terminal through a USB interface, a power line in the USB interface is used by the power adapter to charge the mobile terminal, a data line in the USB interface is used by the power source adapter to conduct a bidirectional communication with the mobile terminal, and the power adapter supports a common charging mode and a quick charging mode, charging current of the quick charging mode is greater than that of the common charging mode. The method includes: conducting a bidirectional communication with the mobile terminal to determine to charge the mobile terminal in the quick charging mode; and adjusting charging current to charging current corresponding to the quick charging mode to charge the mobile terminal.

A wireless power transmission method executed by a power transmitter comprising multi-coils, according to one embodiment of the present invention, comprises the steps of: detecting a second power receiver while transmitting power to a first power receiver; determining at least one primary coil adequate for power transmission; by using the determined at least one primary coil, determining whether the second power receiver supports a shared mode protocol; and if the second power receiver supports the shared mode protocol, transmitting power to the first and second power receivers according to the shared mode protocol, wherein the shared mode protocol may be a protocol for simultaneously managing information exchanges between the power transmitter and multiple power receivers.

An electric vehicle charging method includes at a user terminal, transmitting a location information of the user terminal to a management sever; at the management sever, determining at least one usable charging device corresponding to the location information; at the management sever, transmitting information for at least one determined charging device to the user terminal; at the user terminal, choosing at least one charging device among the at least one determined charging device; at the user terminal, transmitting a preemption request information for preemption at least one chosen charging device to the management server; at the management sever, locking at least one charging device corresponding to the preemption request information by transmitting a preemption order signal; at the management sever, transmitting information for a user of the user terminal to locked charging device; and unlocking the charging device corresponding to inputting a authentication information for authentication of the user.

A charge control system includes a lithium battery configured to provide lithium battery power to a set of electrical loads, a user signaling device, and control circuitry coupled with the lithium battery and the user signaling device. The control circuitry is operative to: (A) detect availability of charge from an external charger, (B) in response to detection of the availability of charge from the external charger and prior to controlling the external charger to adjust the amount of charge stored by the lithium battery, perform a set of pre-charging assessment operations, and (C) based on the set of pre-charging assessment operations, provide a user notification via the user signaling device, the user notification indicating whether the lithium battery is properly setup for charge adjustment. When the user signaling device generates the user notification, the user is informed that the utility vehicle is properly connected to the external charger.