A method for charging a traction battery of an electric vehicle includes, in response to a request to charge a traction battery, initially discharging the traction battery, for a first duration of time, according to a discharge stage having a constant power; subsequently charging the traction battery, for a second duration of time, according to a charge stage having a constant current; and repeating the discharge stage and the charge stage in sequence until the battery is charged.

An example operation includes one or more of providing to a charging station a distance desired to be driven by a transport and determining, by the charging station, an amount of energy to retrieve from the transport such that a residual amount of energy in the transport is equivalent to the distance desired to be driven.

In an embodiment, a power module may include: a plurality of first stages, each having an H-bridge to receive an incoming AC voltage at a first frequency and rectify the incoming AC voltage to a DC voltage; a plurality of DC buses, each to receive the DC voltage from one of the plurality of first stages; a plurality of second stages, each coupled to one of the plurality of DC buses to receive the DC voltage and output a second AC voltage at a second frequency; and a hardware configuration system having fixed components and optional components to provide different configurations for the power module.

In an embodiment, a power module may include: a plurality of first stages, each having an H-bridge to receive an incoming AC voltage at a first frequency and rectify the incoming AC voltage to a DC voltage; a plurality of DC buses, each to receive the DC voltage from one of the plurality of first stages; a plurality of second stages, each coupled to one of the plurality of DC buses to receive the DC voltage and output a second AC voltage at a second frequency; and a hardware configuration system having fixed components and optional components to provide different configurations for the power module.

The present invention relates to an electric vehicle charging device and to a method for controlling same. The electric vehicle charging device includes a plurality of charging cables installed in one electric vehicle charger. After battery charging of a vehicle, which has arrived first, is completed using one charging cable, a next vehicle is immediately charged using another charging cable such that even in a state where the vehicle, which has arrived first, does not leave a charging station, the next vehicle can be charged. Accordingly, it is possible to improve convenience of an electric vehicle user, and minimize waiting time for charging. Therefore, it is possible to improve the operational efficiency of the electric vehicle charger.

Described herein is an electric vehicle charging arrangement for charging an electric vehicle, including an electric vehicle supply equipment (EVSE). The EVSE includes a power module configured for providing electrical energy to charge the electric vehicle, an output configured for connecting the power module to the electric vehicle for charging the electric vehicle, and a direct current (DC) bus having a DC+ line and a DC− line and provided between and connected to the power module and the output and configured for transporting electric energy from the power module to the output. Each of the DC+ the DC− lines is provided with a contactor configured for selectively allowing a current flow from the power module to the output. A first pre-charge circuit is provided in parallel to the contactor of the DC+ line, and a second pre-charge circuit is provided in parallel to the contactor of the DC− line.

Disclosed herein is a charger for charging electric vehicles. In one embodiment, the charger includes M AC/DC converters, a DC bus, N DC/DC converters, and D energy exchange ports. The M AC/DC converters are configured to be coupled to a power source at an input side of the M AC/DC converters. The DC bus is connected to an output side of each of the M AC/DC converters. The N DC/DC converters are coupled to the DC bus at an input side of the N DC/DC converters. The D energy exchange ports are coupled to an output side of one or more of the N DC/DC converters at an input side of the D energy exchange ports, and each of the D energy exchange ports is configured to be coupled to an electric vehicle, where N>M, and where an energy storage is coupled to the DC bus.

A processor-implemented method of estimating a state of a battery includes acquiring current information and voltage information of a battery; determining time interval values based on the acquired current information such that current integration values corresponding to the time variation values satisfy a condition; determining voltage values corresponding to the determined time interval values in the acquired voltage information; and determining state information of the battery based on the determined voltage values.

The present disclosure relates to an electric vehicle charging control device and method thereof capable of changing a charging method according to the temperature of a battery mounted in an electric vehicle to maximize the efficiency of fast charging while preventing battery deterioration and accidents. The electric vehicle charging control device may be formed in the electric vehicle and include a temperature sensor configured to sense a temperature of a battery to be charged and generate temperature information, a processor, and a memory coupled to the processor. The memory may be configured to store program commands that are executable by the processor, and cause the processor to perform fast charging of the battery by using a maximum current value that maintains a temperature less than a present second threshold temperature when the temperature information is greater than or equal to a preset first threshold temperature.

The present disclosure relates to an electric vehicle charging control device and method thereof capable of changing a charging method according to the temperature of a battery mounted in an electric vehicle to maximize the efficiency of fast charging while preventing battery deterioration and accidents. The electric vehicle charging control device may be formed in the electric vehicle and include a temperature sensor configured to sense a temperature of a battery to be charged and generate temperature information, a processor, and a memory coupled to the processor. The memory may be configured to store program commands that are executable by the processor, and cause the processor to perform fast charging of the battery by using a maximum current value that maintains a temperature less than a present second threshold temperature when the temperature information is greater than or equal to a preset first threshold temperature.