A power supply device includes a power supply unit that outputs alternating current, an output unit connectable to a power supply line, and an adjusting unit that adjusts the capacitance of a power supply circuit between the power supply unit and the output unit. The adjusting unit includes a first capacitor, a second capacitor, and a circuit switching mechanism. The circuit switching mechanism can switch between a series connection state in which the first capacitor and the second capacitor are connected in series between the power supply unit and the output unit, and a parallel connection state in which the first capacitor and the second capacitor are connected in parallel between the power supply unit and the output unit.

The present invention creates an electrical filter circuit (100) for an electric drive (200), wherein the filter circuit (100) comprises an x-capacitor (CX_i), a first and a second y-capacitor (CY1_i, CY2_i). The x-capacitor (CX_i) is connected between a first and the third filter output terminal (212, 216), or a first and a third filter input terminal (213, 217), and the first y-capacitor (CY1_i) is connected between the third filter output terminal (216) or the third filter input terminal (217) and a reference potential or ground. The second y-capacitor (CY2_i) is connected between the second filter output terminal (214) or the second filter input terminal (215) and a reference potential or ground.

The various implementations described herein include methods and devices for vehicle-to-vehicle charging. In one aspect, a system includes a charge acceptor vehicle, a charge donor vehicle, and a cable having a first connector and a second connector. The first connector is configured to trigger a request to establish an electrical connection with the battery of the charge acceptor vehicle in response to a determination that the second connector is plugged into a charging port of the charge donor vehicle. The second connector is configured to automatically establish an electrical connection to the battery of the charge donor vehicle. The cable is configured to support charge transfer from the battery of the charge donor vehicle to the battery of the charge acceptor vehicle. Details regarding the cable and a method of transferring charge between two vehicles are also disclosed.

A power supply apparatus is provided. The apparatus includes a first converter configured to convert a voltage of power supplied from a power supply source into a first voltage, a first power distributor configured to distribute a current of the first voltage to first voltage loads, and a redundant power system configured to supply power to the first power distributor. The first power distributor includes a first switch configured to switch on or off an output when a current output to the first voltage loads is greater than or equal to a first reference value.

Example methods to manage a plurality of battery packs of an electric vehicle include initiating a charging process for a primary battery pack and an auxiliary battery pack, determining that an Open Circuit Voltage (OCV) of the primary battery pack matches an OCV of the auxiliary battery pack, and based on determining that the OCV of the primary battery pack matches the OCV of the auxiliary battery, connecting the primary and auxiliary battery packs in parallel and initiating parallel charging of the primary battery pack and the auxiliary battery pack.

A ground power supply apparatus is provided with a control device configured to supply power to a mobile unit by noncontact if identification information of the mobile unit received from a server and stored in a storage device matches identification information of the mobile unit received from the mobile unit. The control device is configured to change a timing of deletion of identification information of the mobile unit received from the server and stored in the storage device from the storage device or the timing of invalidation of the identification information of the mobile unit received from the server and stored in the storage device based on the road conditions around the road at which the ground power supply apparatus is installed or the running path of the mobile unit.

The present disclosure includes devices, systems, and methods for managing vehicle functions according to power demand by vehicle subsystems. Example methods include receiving available power data indicating available vehicle battery power, the vehicle having vehicle subsystems. Methods include receiving demand data indicating a battery power demand by the vehicle subsystems that perform vehicle functions. Methods include receiving modification data associated with modifying the vehicle functions. Methods include determining, at a first time, based on the demand data and the available power data, that the power demand exceeds the available power. Methods include selecting, in response to that determining, target vehicle functions among the vehicle functions. Methods include selecting, based at least in part on the modification data, modifications for the target vehicle functions. Methods include initiating the modifications to the target vehicle functions.

Disclosed techniques relate to a system for testing a capacitor. In an example, a testing circuit includes a testing voltage source configured to output a testing voltage to the capacitor; a discharge network configured to dissipate power from the capacitor; a voltage detection circuit configured to measure a voltage of the capacitor; a first switch configured to connect the capacitor to a main circuit; a second switch configured to connect the capacitor to the discharge network; a third switch configured to connect the capacitor to the testing voltage source; and a fourth switch configured to connect the capacitor to the voltage detection circuit; and one or more controllers. The controllers are configured to control an operation of the switches to test the capacitor using the testing voltage source, the discharge network, and the voltage detection circuit, and to determine, from the test, whether the capacitor is connected.

A system and method for exiting a low power mode of operation of a battery electric machine (BEM) are provided. The method includes determining a location of a BEM allocated to a production circuit; determining a location of a charging station compatible with the BEM; based on the locations of the BEM and the charging station and the production circuit: determining a plurality of tasks of the BEM for executing the production circuit, predicting a corresponding duration and a corresponding energy use of each of the plurality of tasks, and determining a sequence of the plurality of tasks; initiating the BEM to perform a next task after a current task of the plurality of tasks; and causing the BEM to exit a low power mode of operation of the BEM based on the predicted corresponding durations and the predicted corresponding energy uses of the current task and the next task.

Embodiments that provide advanced charging of energy source arrangements for energy storage applications are disclosed. The embodiments can be used within energy storage systems having a cascaded arrangement of converter modules. The embodiments can include the application of pulses to an energy source of each module of the system. The pulses can be applied for a duration sufficient to initiate an electrochemical reaction. Feedback based pulse control embodiments are also disclosed.