An onboard DC charger for an electric vehicle, wherein the electric vehicle includes an electric machine and a power conversion device that is a drive circuit for the electric machine and a charging circuit for the on-board battery. The one or more electric machines of the vehicle are mounted to the body for providing locomotive energy, wherein the or each machine has a stator, a rotor mounted to the stator for rotation, and one or more windings; and a controller for operating in a first state and a second state wherein, in the first state, the controller allows current to be drawn from the DC energy source for energising at least one of the one or more windings such that the electric machine provides the locomotive energy and, in the second state, the controller controls the position of the rotor relative to the stator and allows at least one of the one or more windings to be energised to provide a charging current to the DC energy source.

The invention relates to a method for generating and delivering charging current for an electric vehicle in a charging pole having the method steps of registering a first initial process, evaluating the first initial process, starting the charging process as a function of the evaluation result, the first initial process being different from a start command of a user for starting a charging process, and a charging pole for carrying out the method.

An example operation includes one or more of initiating, by a transport, a request to provide a first portion of stored energy to a charging station, determining, by the charging station, an actual amount of energy needed by the transport, wherein the determining is based on a first destination of the transport and on data received by the charging station based on a route associated with the first destination, wherein the actual amount of energy is not the same amount as the first portion of stored energy, and depositing, by the transport, the actual amount of energy in the charging station.

An electric vehicle battery charging system, comprising digital map subsystem, operating software that incorporates the digital map subsystem, a plurality of charging units, and a controlling unit that mainly handles booking related matters. The booking flow works as below steps: (a) searching step: to search every possible available charging unit, (b) confirming step: to confirm the electric vehicle arrives at selected charging unit at an acceptable time, (c) charging step: to complete the whole charging session. The system further comprises a preventing measure that prevents the charging units from being occupied unruly and an enhancing measure that enhances charging efficiency out of booking accuracy.

A management server is configured to perform a process including: setting a basic fee of a first monthly fee when a utilization manner is battery lease; setting discount rates based on the weight, capacity, manufacturer, degree of initial deterioration, amount of power consumption, number of times of performing quick electric charging, utilization region, and utilization period of the battery; determining the first monthly fee; setting a basic fee of a second monthly fee when the utilization manner is vehicle lease; setting discount rates based on the weight of the battery, a utilization region of the vehicle, and a utilization period; determining the second monthly fee; and determining a total monthly fee.

A method of controlling charge of a vehicle battery includes: determining, by a control unit, whether a high voltage battery and a low voltage battery are charged in a first charging mode, a second charging mode, or a third charging mode; and charging at least one of the high voltage battery or the low voltage battery by controlling a first full-bridge circuit unit, a second full-bridge circuit unit, and a low voltage direct current (DC) converter unit based on the determined first, second or third charging mode.

A European standard-based double-gun high-power quick charging system and method are disclosed. The system includes a battery management system, and at least two paths composed of corresponding charging communication modules, chargers and high-voltage charging loops, each of the chargers connected to at least one charging gun; the battery management system independently controls the charging communication module and high-voltage charging loop, and performs mapping management on a control signal and high-voltage charging loop; information interaction between different charging control units and chargers is carried out independently. By designing the system compatibility and time sequence difference when a double-gun system is connected, the problem of idle chargers is solved, so that the charging speed is increased, and the problems of long-time occupation of charging resources by vehicles and low utilization efficiency of vehicles are avoided; insulation detection performed on the initial charging of vehicle battery system increases safety of the system.

A charging system includes a charging station having input configured to receive a first type of electrical power, and a power converter connected to the input. The power converter is configured to convert the first type of electrical power from the input to a second type of electrical power different to the first type of electrical power, the second type of electrical power including DC electrical power. The charging station has outputs connected to the power converter, the outputs configured such that DC electrical power is providable to each of the outputs simultaneously. Each of the outputs is configured to connect to a respective electric vehicle for charging of the electric vehicle.

A multi-charger, serially operated electrical vehicle (EV) charging system, contains a Power Control System (PCS) providing DC power. A plurality of EV chargers is serially power-connected to each other, wherein the first EV charger is connected to the PCS. There are sets of relays in at least the first EV charger, wherein a first set of the set of relays, when activated, is configured to supply power to a respective charging cable of the EV charger, and a second set of the set of relays, when activated, is configured to supply power to a next-serially connected EV charger. The sets of relays contain auxiliary contacts providing relay status information. A hardware logic prevents the first and second sets of relays from simultaneously being activated, allowing only one EV charger of the plurality of EV chargers to charge at a time.

A multimodal converter for use in electric vehicle charging stations for interfacing between at least one AC source and two DC sources (including the electric vehicle with onboard DC traction accumulator). The multimodal converter may also be applicable to other uses with a multitude of energy sources. For example, where the multimodal converter AC interface is for an electric motor, such as in a plug-in electric vehicle, an electric power tool, an electric water pump, a wind turbine, or the like, or interfacing with any DC sources such as an electrical battery apparatus, a solar panel array, a DC generator, or the like, whether for private, commercial or other use.