A method determines an anticipated occupation of charging points and a charging strategy for a specified route. The method provides traffic data which is representative for the current traffic density on the route specified. An anticipated occupation of charging points along the specified route can be determined on the basis of the traffic data. A charging strategy can be determined on the basis of the traffic data and the determined anticipated occupation of charging points. The provision of information regarding a charging strategy to a driver allows the time required for the specified route to be reduced.

An authentication between a wireless charger and a device configured to receive wireless energy from the wireless charger includes establishing a wireless data channel between the wireless charger and the device. An authentication challenge signal is driven onto a transmit charging coil of the wireless charger and a receive charging coil of the device is configured to receive the authentication challenge signal. The device sends an authentication response signal to the wireless charger based at least in part on the authentication challenge signal.

An authentication between a wireless charger and a device configured to receive wireless energy from the wireless charger includes establishing a wireless data channel between the wireless charger and the device. An authentication challenge signal is driven onto a transmit charging coil of the wireless charger and a receive charging coil of the device is configured to receive the authentication challenge signal. The device sends an authentication response signal to the wireless charger based at least in part on the authentication challenge signal.

A system and method for an electric vehicle (EV) battery resource sharing system is provided. One embodiment has a plurality of battery modules and a plurality of battery exchange facilities. Each different EV contains a battery swap cabinet that is configured to releasably secure at least one of the plurality of battery modules within the EV. A user of an EV, while at the battery exchange facility, exchanges a discharged first battery module for a second battery module that has been recharged. The battery exchange facility releases the recharged second battery module to the user after a payment has been made by the user. The battery exchange facility subsequently recharges the discharged first battery module after the user has placed the discharged first battery module into the battery exchange facility.

A system and method for an electric vehicle (EV) battery resource sharing system is provided. One embodiment has a plurality of battery modules and a plurality of battery exchange facilities. Each different EV contains a battery swap cabinet that is configured to releasably secure at least one of the plurality of battery modules within the EV. A user of an EV, while at the battery exchange facility, exchanges a discharged first battery module for a second battery module that has been recharged. The battery exchange facility releases the recharged second battery module to the user after a payment has been made by the user. The battery exchange facility subsequently recharges the discharged first battery module after the user has placed the discharged first battery module into the battery exchange facility.

A protection device for an electric DC grid includes a first protection circuit part including a series circuit consisting of a first discharge resistor and a first protection switch between a positive potential line and a reference potential line and a second protection circuit part including a series circuit consisting of a second discharge resistor and a second protection switch between a negative potential line and the reference potential line. The first and second protection switches can be actuated to close if a first and/or second voltage measuring device ascertains that a specified voltage value has been undershot and/or exceeded or the first and/or second protection switch can be actuated to close in an event of a fault current measured by a fault-current measuring device.

A protection device for an electric DC grid includes a first protection circuit part including a series circuit consisting of a first discharge resistor and a first protection switch between a positive potential line and a reference potential line and a second protection circuit part including a series circuit consisting of a second discharge resistor and a second protection switch between a negative potential line and the reference potential line. The first and second protection switches can be actuated to close if a first and/or second voltage measuring device ascertains that a specified voltage value has been undershot and/or exceeded or the first and/or second protection switch can be actuated to close in an event of a fault current measured by a fault-current measuring device.

A system for controlling a group of charging stations for at least one electric vehicle includes a central device charger controller for controlling system operation. A plurality of charging units communicate with the central device charger controller. The plurality of charging units each further comprises charging circuitry for generating a charging current to the at least one electric vehicle responsive to power provided from a local power grid. A connector provides the generated charging current from the charging circuitry to the at least one electric vehicle. At least one interface within the central device charger controller enables communications with the central device charger controller and a plurality of mobile charging applications and controls charging of a connected at least one electric vehicle.

A platform module having switchable power for a vehicle including a movable member capable of achieving multiple positions and a position sensor. The movable member includes a plurality of ports configured to provide power. The position sensor is configured to detect a position of the movable member. A first port from the plurality of ports is configured to provide power when the movable member is in a first position; and a second port from the plurality of ports is configured to provide power in response to detecting that the movable member is in a second position. Further, a method is provided for switching power to the platform module.

A power system includes a DC/AC converter, a traction battery, an AC/DC converter electrically connected between the DC/AC converter and traction battery, and a transformer electrically connected between the DC/AC converter and AC/DC converter. The AC/DC converter includes a plurality of semiconductor devices and a plurality of capacitors such that during power transfer from the DC/AC converter to the traction battery, a voltage across each of the capacitors is half of a battery voltage.