A display device according to an embodiment of the present disclosure may comprise a stand and a head supported by the stand, including a display and a battery, wherein the head is electrically connected through a pogo pin provided in a connector of the stand, wherein the head further comprises a main board configured to obtain an operating state of the head and an input voltage input to the head through the pogo pin, and determine whether an error has occurred in the pogo pin based on the operating state of the head and the input voltage.

A protective interconnection circuit for interconnecting a solar panel, a battery and a charge controller. One embodiment has a pair of post-mate, mating electrical connectors. The connectors have at least two primary conduction paths through the joined connectors and a first set of at least two auxiliary conduction paths through the joined connectors. The primary conduction paths electrically connect the battery to the charge controller. The auxiliary conduction paths of the battery side connector are connected together. The auxiliary conduction paths of the controller side connector are connected one to the solar panel and the other to the charge controller. Another embodiment has a relay with its coil terminals electrically connected the controller's battery terminals. The relay contacts are interposed in a conductive connection between the solar panel and the controller.

Provided are an electronic system and a method for controlling the same. The electronic system includes an electronic device at least including: a charging circuit having a first input terminal, a second input terminal, and a first output terminal, and including a first transistor, a second transistor, a third transistor, and a fourth transistor; a switching circuit including an input terminal connected to the first output terminal and an output terminal connected to a power supply of the electronic device and configured to connect or disconnect a connection path between the first output terminal and the power supply; and a communication device, which, in a communication mode, is connected to the first and second input terminals to communicate with the electronic device through the first and second input terminals. The implementation of the present disclosure is at least conducive to prolonging the service life of the electronic device.

A multi-phase vehicle charging circuit equipped with an AC charging connector and with a load AC connector is provided. The charging connector is connected to an AC side of a rectifier circuit. The load AC connector is connected to a neutral conductor of the vehicle charging circuit and to a first phase of the AC side. At least one changeover switch connects at least one further phase of the AC side optionally to the neutral conductor or to an associated phase connector of the AC charging connector.

A vehicle battery pack may include: a first battery portion including a first battery module; a second battery portion including a second battery module; a connector supplying power from at least one of the first battery portion and the second battery portion when no battery abnormality has occurred to a thermal management control unit; a bypass path unit providing a path to bypass any one of the first battery portion and the second battery portion when a battery abnormality has occurred; and a switching unit connecting the bypass path unit to the first or second battery portion when the battery abnormality has occurred, in a power supply circuit including the first battery portion and the second battery portion, connected to the connector, to supply power to the thermal management control unit.

Systems, methods, and devices including a plurality of hybrid capacitors for storing energy as both electrical potential and chemical potential. An energy storage bank comprising the plurality of hybrid capacitors is coupled to a battery management system configured to monitor parameters of the plurality of hybrid capacitors and selectively access at least a portion of the plurality of hybrid capacitors to provide electrical power output.

An aspect of the current disclosure includes a battery management apparatus including a plurality of resistors respectively connected to a plurality of batteries, respectively, a plurality of first switches configured to respectively connect the plurality of resistors to output terminals of the plurality of batteries, respectively, a plurality of second switches configured to connect the plurality of resistors to each other in parallel, and a controller configured to determine whether each of the plurality of batteries is abnormal, and control operations of the plurality of first switches and the plurality of second switches based on whether each battery of the plurality of batteries is abnormal.

There is provided a battery switching device including: a first contact device including a first movable contact and a first parallel contact to which the first movable contact is connected or disconnected; and a second contact device including a second movable contact, a series contact to which the second movable contact is connected or disconnected, and a second parallel contact to which the second movable contact is connected or disconnected; and a connection restriction unit configured to prevent the second movable contact from being connected to the series contact in a state where the first movable contact is connected to the first parallel contact and prevent the first movable contact from being connected to the first parallel contact in a state where the second movable contact is connected to the series contact.

A method compensates for leakage currents in a protective conductor of an electrical power converter. The method includes: using a first differential current sensor for determining a differential current depending on a phase conductor current in a phase conductor and a neutral conductor current in a neutral conductor; feeding a compensation current into the phase conductor and/or into the neutral conductor via a first compensation circuit; using a second differential current sensor for capturing a signal representing remaining residual leakage current; converting the signal representing the residual leakage current to a frequency domain; generating a compensation signal for the residual leakage current in a frequency-selective manner; converting the compensation signal to a time domain; supplying the converted compensation signal converted to the first compensation circuit or a second compensation circuit; and feeding a residual compensation current corresponding to the compensation signal into the phase conductor(s) and/or into the neutral conductor.

A vehicle charging system includes a housing having a mating end for mating with a charging component for the electric vehicle. The vehicle charging system includes a DC charging terminal held in a cavity of the housing and having a mating end for mating with the charging component. The vehicle charging system includes a charging controller for controlling vehicle charging. The vehicle charging system includes an arc sensor in the internal cavity configured to detect an arc event at the mating end of the DC charging terminal. The arc sensor is operably coupled to the charging controller to control the vehicle charging when the arc event is detected.