The present disclosure provides a method and system for ground fault detection. The method may include obtaining an input voltage and a null-ground voltage; determining whether the null-ground voltage is less than a voltage threshold; if yes, further determining whether the null-ground voltage is less than a preset voltage; if yes, determining that the grounding state is normal; if the null-ground voltage is greater than or equal to the preset voltage, determining that the grounding state is abnormal; if the null-ground voltage is greater than or equal to the voltage threshold, determining that the live wire and the null wire are reversed; in the case that the live wire and the null wire are reversed, determining whether the difference between the input voltage and the null-ground voltage is less than the preset voltage; if yes, determining that the grounding state is normal; if no, determining that the grounding state is abnormal.

A method for operating an electric vehicle, in which an automatic unlocking function for a vehicle-side charging interface is activated if it is established on the basis of an ascertained position of the electric vehicle that the electric vehicle is arranged at a public charging column. The activated automatic unlocking function effectuates automatic unlocking of the charging interface as soon as a charging procedure of the electric vehicle is ended and thus a charging cable connected to the vehicle-side charging inter-face is released. The invention furthermore relates to a control device for an electric vehicle.

An energy and supply system includes a switching device, a battery detection device, a speed detection device, a processing device, a main storage battery and a backup storage battery. Using the speed detection device, the processing device determines whether the driving speed of the vehicle exceeds a preset speed threshold, or it determines whether the rotation speed of the engine exceeds a preset rotation speed. The processing device uses the battery detection device to determine whether the main battery capacity is greater than the preset capacity. If the processing device determines that the driving speed of the vehicle exceeds a preset speed threshold, or it determines that the rotation speed of the engine exceeds a preset rotation speed, and it determines that the main battery capacity is greater than the preset capacity, the processing device controls the switching device.

The invention relates to a method for inductive energy transmission from a transmitting coil to a receiving coil spaced apart from the transmitting coil. The receiving coil is arranged in a vehicle which is arranged stationary or is travelling on a supporting surface, wherein the vehicle has at least one sensor. In a first method step (A) a distance between the transmitting coil and/or the supporting surface and the receiving coil is determined, in a second method step (B) a minimum possible air gap between the transmitting coil and/or the supporting surface and the receiving coil is calculated from the distance, and in a third method step (C) the receiving coil is positioned such that the distance corresponds to the minimum possible air gap.

A system and method for managing vehicle charging stations such that when at least two of a plurality of electric vehicle charging stations (also known as electric vehicle service equipment, or EVSE) occupied with vehicles awaiting a charge, the present system manages the charging of individual vehicles in cases where the aggregated demand for charging exceeds the capacity of the circuits supplying the plurality of EVSE. By cycling so that only a few of the vehicles are charging at a time, the demand on the circuits is kept below a predetermined limit. In cases where a load shedding event is in progress, the limit can be further reduced. In cases where the cost of electricity is varying dynamically, the system considers a driver's explicit charging requirements (if any) and preferences for opportunistic charging when the price of electricity is not too high.

The present disclosure relates to a horizontal composite electricity supply structure, which comprises a first insulation layer, a second insulation layer, two electrically conductive layers, and a plurality of electrochemical system element groups. The two electrically conductive layers are disposed on the first and second insulation layers, respectively. The electrochemical system element groups are disposed between the first insulation layer and the second insulation layer, and connected in series and/or in parallel via the electrically conductive layers. The electrochemical system element group is formed by several serially connected electrochemical system elements. Each electrochemical system element includes a package layer on the sidewall, so that their electrolyte systems do not circulate with one another. Thereby, the high voltage produced by connection will not influence any single electrochemical system element nor decompose their respective electrolyte systems. Hence, serial and/or parallel connections are made concurrently in the horizontal composite electricity supply structure.

An electric vehicle charger includes a power supply and a controller. The power supply is for supplying electric power over a charging connection to an electric vehicle. The charging connection employs charging conductors to supply electric power from the power supply to the electric vehicle for charging. The power supply is adapted to send data to and receive data from the electric vehicle over the charging conductors according to a power-line communications protocol. The controller coupled to the power supply to control supply of electric power to the electric vehicle, The controller is adapted to, prior to initiating supply of electric power by the power supply to the electric vehicle for charging, communicate with the electric vehicle to identify a payment method associated with the electric vehicle and with the payment network to authorize the payment method for payment for electric power supplied to the electric vehicle for charging.

A vehicle control apparatus includes a battery remaining-amount recognizing unit recognizing a remaining amount of a battery and a distance measurement control unit measuring a vehicle-terminal distance by switching, based on the remaining amount of the battery recognized by the battery remaining-amount recognizing unit, between a first distance measurement mode repeatedly measuring the vehicle-terminal distance by a distance measuring unit without depending on reception of measurement instruction information transmitted from a mobile terminal and a second distance measurement mode measuring the vehicle-terminal distance by the distance measuring unit in response to reception of the measurement instruction information transmitted from the mobile terminal when communication is established between the vehicle communication control unit and the mobile terminal.

An electric vehicle charging system includes a power distributing system configured to receive power from a power control system and selectively direct the power to one of a plurality of power dispensers coupled to the power distribution system.

An induction charging device for an electrically operated motor vehicle may include at least one charging assembly. The at least one charging assembly may include a charging coil, a ferrite assembly, a metal shielding plate, and a temperature-control assembly through which a fluid is flowable. The charging coil may be inductively couplable to a primary coil such that a motor vehicle battery is inductively chargeable. The ferrite assembly may include a plurality of rotatable ferrite plates arranged next to one another. When in a closed position, a respective ferrite plate may be arranged parallel to the charging coil and may shield the metal shielding plate from the charging coil. When in an open position, the respective ferrite plate may be arranged at an angle relative to the charging coil and may partially shield the metal shielding plate from the charging coil.