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 charging system comprises a coupler configured to be coupled to an inlet of a vehicle and including a user interface, the user interface including a momentary switch mounted on the outer surface of the coupler and configured to receive a user input for an output current level selected by a user; and a light display mounted on the outer surface of the coupler and configured to illuminate a light to visually show the user selected output current level; and an in-cable control and protection device (ICCPD) disposed within a cable, the ICCPD configured to receive the user input from the momentary switch; determine an output current level that the charging system operates at, among the user selected output current level or a current limit level; and transmit back the user selected output current level to the coupler, wherein the vehicle is charged with the determined output current level.

The present disclosure relates to a redundant power device, and an object of the present disclosure is to provide a redundant power topology that can ensure normal operation of a battery management system (BMS) by securing normal operating power of the BMS even when a disconnection occurs in a cable connecting a battery cell and the BMS or an abnormality or failure occurs in an uppermost battery cell. The present disclosure provides a configuration of switching a power supply cable to a processor so that power is supplied to the processor through a sub-cable when an abnormality occurs in a main cable.

A charge and discharge control circuit is provided for controlling a charge control switch element and a discharge control switch element, for controlling charge and discharge of a secondary battery. The charge and discharge control circuit includes: a shunt resistor for detecting a voltage corresponding to a discharge current or a charge current, and output first and second voltage potentials at first and second terminals thereof; a comparator for comparing the first voltage potential with a voltage potential of an addition voltage of a predetermined threshold voltage and the second voltage potential, and output a comparison result signal indicating an overcurrent; a logic circuit for controlling the charge or discharge control switch element based on the comparison result signal; a first LPF inserted between the first terminal of the shunt resistor and the comparator; and a second LPF inserted between the second terminal of the shunt resistor and the comparator.

A power supply control device controls power supply from a DC power source to a load, by turning on or off a MOSFET. A current regulation circuit regulates a current flowing through a device resistor to a current proportional to a voltage between the drain and the source of the MOSFET. A drive circuit turns off the MOSFET when a voltage across a resistor circuit exceeds a predetermined voltage. The on-resistance of the MOSFET varies according to an ambient temperature of the MOSFET. The resistance of the resistor circuit varies in a direction different from a direction in which the on-resistance of the MOSFET varies, according to the ambient temperature of the MOSFET.

A charging management apparatus includes a main relay connected between a positive electrode terminal of a battery pack and a charging terminal of a charging connector, a current regulator connected in parallel to the main relay and including a precharge relay and a resistance regulation circuit connected in series, a battery pack voltage sensor, a battery pack current sensor, and a controller to control the main relay is into an on state and the precharge relay into an off state in response to a first switching condition while the main relay is in the off state, the resistance regulation circuit at a first resistance value and the precharge relay is in the on state, and to control the resistance regulation circuit to a second resistance value, the precharge relay into the on state and the main relay into the off state, in response to a second switching condition.

An on-vehicle backup control device includes a plurality of chargers each of which supplies a charging current based on power supplied from a first power source unit, and an adjustment unit that controls the plurality of chargers. Each of the chargers performs an operation for supplying a charging current to a corresponding power storage. The adjustment unit adjusts the charging operations of the plurality of chargers so as to keep a sum of charging currents to the plurality of power storages within an acceptable range.

A charge system for wireless temperature probe includes a probe body and a charging relay box detachably connected with the probe body, the probe body is provided with a first wireless charging component and a sealing structure. The charging relay box is internally provided with a power supply module, a control module and a second wireless charging component configured to establish a near field communication path with the first wireless charging component, and the control module is used to control the power supply module to adaptively supply power to the probe body through the near field communication path, the probe body comprises a handle, a sealing ring, a probe tube and an internal assembly, a head of the internal assembly is inserted in the probe tube, and a tail of the internal assembly is inserted in the handle.

A charge system for wireless temperature probe includes a probe body and a charging relay box detachably connected with the probe body, the probe body is provided with a first wireless charging component and a sealing structure. The charging relay box is internally provided with a power supply module, a control module and a second wireless charging component configured to establish a near field communication path with the first wireless charging component, and the control module is used to control the power supply module to adaptively supply power to the probe body through the near field communication path.

Provided are a power conversion device and an uninterruptible power system, with which a cost and a volume of the power conversion device are reduced. The power conversion device includes a conversion circuit, a bus capacitor branch, a resistor module, a first switch module and a controller; an input terminal of the conversion circuit is connected to a power supply, and an output terminal of the conversion circuit is connected to the bus capacitor branch through the resistor module; the first switch module is connected in parallel with the resistor module; and the controller is connected to the first switch module and is configured to control the first switch module to be turned off in a case where the conversion circuit is connected to the power supply and a voltage of the bus capacitor branch is less than a preset threshold, and control the first switch module to be turned on in a case where a voltage of the bus capacitor branch is greater than or equal to the preset threshold. When pre-charging of a bus capacitor is required, the first switch module may be controlled to be turned off and the resistor module serves as a current limiting resistor for charging the bus capacitor branch. When charging of the bus capacitor branch is completed, the first switch module is controlled to be turned on to eliminate a loss caused by the resistor module during normal power supply.