Hyundai Motor Company

The present disclosure relates to a battery diagnosis apparatus and a method for diagnosing a battery cell in which a micro internal short circuit has occurred during a cell balancing inactive period. A battery diagnosis apparatus according to one embodiment of the present disclosure may include a battery cell determination unit configured to determine, based on voltage variations of a plurality of battery cells, at least some of the plurality of battery cells as diagnostic reference cells for detecting a micro internal short circuit, and a battery cell diagnosis unit configured to diagnose a micro internal short circuit in each of the plurality of battery cells based on voltage variations of the diagnostic reference cells.

A method of fabricating a physically unclonable function (PUF) device includes fabricating a PUF device including a structure in which a ferromagnetic layer and a nonmagnetic layer are disposed, and controlling magnetic anisotropy of the ferromagnetic layer and forming a random magnetic domain in the ferromagnetic layer, based on application of a voltage to the PUF device.

A wireless exciter system includes a primary structure including a first converter and a primary coil and a secondary structure including a secondary coil, a second converter, and an inverter. The primary coil and the secondary coil are configured to operate as a transformer. One of the primary structure or the secondary structure is configured to rotate. The primary structure is connected to a direct current (DC) power source to receive power. The secondary structure is electrically connected to a rotor of a motor to output multi-phase alternating current (AC) power to the motor.

Proposed are an electrified vehicle and a charging control method thereof, in which a charging mode is adjusted based on a charging environment and a state of a battery. According to an example, there is provided a charging control device including a battery, a sensor configured to measure a state of the battery, a memory configured to store usage history data of the battery, and a processor, wherein the processor is configured to determine an initial charging mode based on the usage history data, determine a degradation indicator for the state of the battery measured by the sensor as a result of accumulated charging, and determine a final charging parameter of the initial charging mode based on the degradation indicator to perform charging control of the battery.

A vehicular battery system includes a plurality of single-phase battery systems, wherein each of the plurality of single-phase battery systems includes a plurality of battery modules, wherein the plurality of battery modules include a combination of a first battery module and a second battery module, wherein each of the first battery module and the second battery module includes a battery, an inverter including AC module output terminals outputting an AC module voltage from a voltage of the battery, and a DC/DC converter including DC module output terminals outputting a DC module voltage from a voltage of the battery, wherein the DC/DC converter disposed in the first battery module includes a step-down converter, and wherein the DC/DC converter disposed in the second battery module includes a step-up converter.

A power supply system for an electric vehicle includes a main battery, a first power network connected to the main battery in parallel and including a first converter converting, a first battery and a first load, a plurality of second power networks connected to the main battery in parallel and respectively including a second converter and a second load, a switch module including a plurality of switches, and a controller monitoring a magnitude of a first load current flowing through the first load in real time and sequentially closing the plurality of switches based on an efficiency curve.

A regenerative braking method includes determining a maximum required distance from a preceding vehicle based on a speed of a subject vehicle and a distance control parameter based on satisfying a distance control parameter update condition during inter-vehicle distance control driving. The regenerative braking method further includes updating the distance control parameter based on the maximum required distance and a relative distance with respect to the preceding vehicle. The regenerative braking method further includes determining a target distance from the preceding vehicle based on the distance control parameter. The regenerative braking method further includes controlling a powertrain including a drive motor based on the target distance.

Provided is a method and an apparatus for determining an estimated remaining driving range of an electric vehicle. The method (200) comprises determining (210), by using at least one computational model, a plurality of remaining driving range predictions, each of the plurality of remaining driving range predictions being based on a corresponding time window of driving history of the vehicle. Further, the method comprises determining (220) characteristic parameters of a probability distribution function formed at least approximately by the plurality of remaining driving range predictions. The method further comprises determining (230) at least one estimated remaining driving range of the vehicle and a corresponding confidence level based on the characteristic parameters of the probability distribution function. Further, the method comprises outputting (240) the at least one estimated remaining driving range of the vehicle and the corresponding confidence level.

A vehicle can include a floor panel coupled to a pair of side sills spaced apart from each other, a battery coupled to the pair of the side sills and positioned below the floor panel, a ramp apparatus positioned on the floor panel and coupled to at least the side sills, and seat rails positioned on the ramp apparatus and coupled to the ramp apparatus. Alternatively by omitting the floor panel, a vehicle can include a battery coupled to a pair of side sills, a ramp apparatus positioned on the battery and coupled to at least the side sills, and seat rails positioned on the ramp apparatus and coupled to the ramp apparatus.

An electrified vehicle includes a powertrain mechanically connected to a main drive wheel, which is a rear wheel, and having a drive motor. The electrified vehicle further includes a driving force distribution device configured to selectively distribute output torque of the powertrain to an auxiliary drive wheel, which is a front wheel. The electrified vehicle further includes a controller configured to, upon receiving a braking demand, determine whether the auxiliary drive wheel participates in regenerative braking based on a regenerative braking capacity of the drive motor. The controller is further configured to control the drive motor and the driving force distribution device based on a determination result of whether the auxiliary drive wheel participates in the regenerative braking.