The present disclosure relates to a motor drive system comprising: a fuel cell; a motor, electrically connected to the fuel cell; and, a cryogenic system arranged to contain a cryogen, wherein the fuel cell is arranged to output current to the motor, and wherein the cryogenic system is arranged to communicate a cryogen from the cryogenic system to the fuel cell.

Technologies and techniques for operating a flying object, such as a battery-operated flying object that includes at least one battery system and at least one electric drive unit. During an emergency, a first power limit of the battery system can be increased to a second power limit of the battery system such that a safe emergency landing of the flying object is possible.

A battery system includes at least one battery pack including: a plurality of battery cells; a plurality of pre-charge resistors connected to one terminal of the at least one battery pack; a plurality of pre-charge switches of which one terminal is connected to the other terminal of a plurality of pre-charge resistors; a plurality of capacitors connected to the other terminal of a plurality of pre-charge switches; and a main control circuit that determines whether a plurality of pre-charge resistors are abnormal according to a result of comparing a sum of a plurality of branch currents calculated by using a pre-stored value of a plurality of resistances of the plurality of pre-charge resistors and the voltage of both terminals of a plurality of pre-charge resistors with a battery current flowing through at least one battery pack, when the first period has elapsed during the performing of the pre-charge operation.

Systems and methods for a computer-based process that optimizes vehicle fleet charging systems. Failed chargers are detected and optimal paths are determined between these failed chargers and available chargers. Upon determining the optimal path, instructions to route the vehicle from the failed chargers to available chargers via these shortest paths are then communicated.

Embodiments of the present invention provide a high-voltage connector comprising a first high-voltage connection interface comprising first and second high-voltage pins and first and second high-voltage interlock pins; a second high-voltage connection interface comprising third and fourth high-voltage pins and third and fourth high-voltage interlock pins and a high-voltage interlock connection interface, wherein the first high-voltage pin is electrically connected to the third high-voltage pin, the second high-voltage pin is electrically connected to the fourth high-voltage pin, the first high-voltage interlock pin is electrically connected to the third high-voltage interlock pin, and the second and fourth high-voltage interlock pins are electrically connected to the high-voltage interlock connection interface.

A vehicle includes a traction battery, an electric machine, a relay electrically between the traction battery and electric machine, and a controller. When closed, the relay completes an electrical circuit including the traction battery and electric machine. The controller selectively commands the relay to open based on a voltage across a coil of the relay and a current through the coil.

Systems and methods for controlling the direction of propulsion of an electric vehicle are provided. According to an embodiment, a method can include receiving a first signal from a first user input device; operating an electric motor in a first direction based on the first signal to propel a watercraft in a forward direction; receiving a second signal from a second user input device; and operating the electric motor in a second direction based on the second signal to propel the watercraft in a reverse direction.

A power source system includes a first power source, a second power source, a Direct Current to Direct Current converter, a first load including a vehicle control device configured to perform predetermined control regarding at least one of traveling, steering, and braking of the vehicle regardless of a driving operation performed by a driver of the vehicle, and an electric actuator as a control target of the vehicle control device, and connected to the first path so as to be supplied with power from the first power source, and a power source control device configured to control an operation of the Direct Current to Direct Current converter such that power is supplied to the first path from the second power source in a case where the predetermined control is performed.

To provide a battery heater failure diagnostic device for a vehicle capable of diagnosing failure of a battery heater with a high degree of accuracy, a battery output sensor capable of detecting a battery output value that is a current value or a voltage value of a battery is provided. When a specified failure diagnosis condition is satisfied, a first control for stopping actuation of a battery heater and at least one non-heater device and a second control for actuating the battery heater while maintaining a stop of the actuation of the at least one non-heater device after execution of the first control are executed. The failure of the battery heater is diagnosed based on battery output values detected by the battery output sensor during execution of the first control and during execution of the second control.

A cooling control system and method for a motor vehicle comprising: a server unit and N client units, wherein N is greater than or equal to 1, the server unit being in data connection with the N client units via a wireless network, the N client units configured to be arranged on N motor vehicles respectively, each client unit configured to perform real-time collection and storage of calculation input data on the corresponding motor vehicle for evaluating a temperature of a unit requiring cooling on the motor vehicle, perform real-time collection and storage of temperature data of the unit requiring cooling, predict, using the collected calculation input data, temperature data at a future time of the unit requiring cooling based on a predictive mathematical model determined by the server unit (200), and enable the selective cooling in advance of the unit requiring cooling based on the predicted temperature data.