A floor structure of a rear vehicle body, in which at least one component including a high-voltage battery is mounted in a rear portion of a vehicle body, includes: a first cross member coupled to each front portion of first and second rear side members in a vehicle width direction; and a second cross member coupled to the first and second rear side members at a rear of the corresponding first cross member in the vehicle width direction, wherein a space in which the at least one component is mounted is formed between the first cross member and the second cross member.

AC current heating of a battery is performed using a half-bridge based quasi-resonant circuit.

Charging cord assemblies for transferring power between electrified vehicles during in-flight bidirectional energy transfer events may include a cable including a wire bundle coated with a conductive foamed plastic shielding to establish a cable subassembly. The conductive foamed plastic shielding is configured to reduce electromagnetic interference (EMI) of the cable. Various cable routing arrangements may be utilized for routing the cable of the charging cord assembly during the in-flight bidirectional energy transfer events.

The present application provide a control method of a power battery heating system. The method includes: controlling all upper bridge arms of a first bridge arm group and all lower bridge arms of a second bridge arm group to be turned on, and all lower bridge arms of the first bridge arm group and all upper bridge arms of the second bridge arm group to be turned off, so as to form a first loop; controlling all the lower bridge arms of the first bridge arm group and all the upper bridge arms of the second bridge arm group to be turned on, and all the upper bridge arms of the first bridge arm group and all the lower bridge arms of the second bridge arm group to be turned off, so as to form a second loop. The method is used to heat the power battery.

A vehicle thermal management system, may include an HVAC subsystem including a first compressor and a first refrigeration cycle including a first refrigerant loop fluidly connected to the first compressor; a battery cooling subsystem including a battery coolant loop fluidly connected to a battery pack; a powertrain cooling subsystem including a powertrain coolant loop fluidly connected to a powertrain component; a second refrigeration cycle including a second compressor, a condenser located on the downstream side of the second compressor, and a second refrigerant loop fluidly connected to the condenser; a refrigerant chiller mounted between the first refrigeration cycle and the second refrigeration cycle and configured to transfer heat between the first refrigeration cycle and the second refrigeration cycle; and a battery chiller mounted between the second refrigeration cycle and the battery coolant loop and configured to transfer heat between the second refrigeration cycle and the battery coolant loop. The condenser of the second refrigeration cycle is thermally connected to at least one of the battery coolant loop and the powertrain coolant loop.

Landing pads for a drone. One of the landing pads can include a landing station configured to mount onto a non-horizontal surface; a landing area i) connected to the landing station and ii) with a first surface configured to receive a second surface of a landing gear of a drone; a fixed member i) connected to the landing station and that ii) includes a third surface near an end of the landing area and iii) is configured to contact an end of the landing gear of the drone; a moveable member i) connected to the landing station and ii) that is configured to a) move the landing gear across the first surface of the landing area and b) secure the landing gear of the drone substantially in place between the first surface of the landing area and the third surface of the fixed member.

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.

A hybrid electric propulsion system includes a gas turbine engine having a low speed spool and a high speed spool. The low speed spool includes a low pressure compressor and a low pressure turbine, and the high speed spool includes a high pressure compressor and a high pressure turbine. The hybrid electric propulsion system also includes an energy storage system, an electric motor configured to augment rotational power of the high speed spool, and a controller. The controller is operable to detect a start condition of the gas turbine engine, control power delivery from the energy storage system to the electric motor based on detecting the start condition, and provide a compressor stall margin using a power-assist provided by the electric motor to the high speed spool over a targeted speed range during starting of the gas turbine engine.

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.