Abstract: A method is proposed to assist a user of an electric vehicle in reserving a rechargeable battery with a charging station. A reservation assistant unit that is related to the electric vehicle computes an estimated travelling distance from a current location corresponding to the electric vehicle to a destination, and computes a remaining distance based on residual electric energy of a rechargeable battery currently used by the electric vehicle. When the estimated travelling distance is greater than the remaining distance, the reservation assistant unit provides charging station information that indicates the closest charging station that has a rechargeable battery available.

Abstract: A system for managing power supply devices includes an electronic device and plural power supply devices including a first power supply device and a second power supply device. The electronic device is configured to enable the first power supply device to delete a part of battery information stored therein, and enable the second power supply device to store therein a portion of the battery information that was originally stored in the power supply device.

Abstract: A method for battery rental is proposed to include steps of: acquiring a contract identifier that indicates a type of a rental contract for a battery device to be used in a vehicle, and transmitting the contract identifier to the battery device for storage therein; transmitting a vehicle identifier corresponding to the vehicle to the battery device for storage therein; and transmitting the contract identifier and the vehicle identifier to a cloud server for storage therein.

Abstract: A system for managing power supply devices includes an electronic device and plural power supply devices including a first power supply device and a second power supply device. The electronic device is configured to enable the first power supply device to delete a part of battery information stored therein, and enable the second power supply device to store therein a portion of the battery information that was originally stored in the power supply device.

Abstract: A method is proposed to assist a user of an electric vehicle in reserving a rechargeable battery with a charging station. A reservation assistant unit that is related to the electric vehicle computes an estimated travelling distance from a current location corresponding to the electric vehicle to a destination, and computes a remaining distance based on residual electric energy of a rechargeable battery currently used by the electric vehicle. When the estimated travelling distance is greater than the remaining distance, the reservation assistant unit provides charging station information that indicates the closest charging station that has a rechargeable battery available.

Abstract: An electrical control belt continuously variable transmission system controls a movable driving half-pulley or movable driven half-pulley initiatively, by changing a driving interval between the movable driving half-pulley and a fixed driving half-pulley or a driven interval between the movable driven half-pulley and a fixed driven half-pulley, respectively, depending on different statuses, in order to adjust a velocity ratio. By manipulating the movable driving half-pulley or the movable driven half-pulley, the system may further form a driving gap between the movable driving half-pulley and a transmission belt or a driven gap between the movable driven half-pulley and the transmission belt, such that the power is cut off. Clamping the movable driving half-pulley or the movable driven half-pulley to the transmission belt may restore the outputting of the power.