An apparatus for charging a battery for a vehicle, includes a PFC circuit including a rectifier for rectifying an AC power to a DC power, and a link capacitor for smoothing the rectified DC power, a bidirectional DC-DC converter including a first switch for converting the DC power of the PFC circuit to an AC power, a transformer for boosting or reducing a voltage of the AC power converted at the first switch, and a second switch for rectifying an AC power from the transformer to a DC power, and a controller configured to control a phase of a PWM signal applied to the second switch such that the link capacitor is charged by an electrical power from the battery, when a voltage of the link capacitor is below a predetermined voltage prior to entering the battery charging mode.

Provided is a circuit assembly including: a main relay that is to be electrically connected between a load and a battery; a pre-charge circuit connected in parallel with the main relay; and a heat transfer member, wherein the pre-charge circuit includes current-carrying portions that are to be connected to the main relay, and the heat transfer member and the current-carrying portions are in contact with each other.

A power supply system includes a travel mode selection button which acquires a driver request, mode; a management ECU which sets, based on the driver request mode, any among a plurality of travel modes as a setting mode; and an electronic control unit group which controls the flow of electric power in the power circuit under conditions according to the setting mode. The management ECU calculates a sum of a first output upper limit of a first battery B1 and a second output upper limit of a second battery B2 as a total output upper limit Pt_lim, calculates a reference output upper limit Pr_lim which is the first output upper limit of the battery B1 in a reference state, and in the case of the setting mode being a normal mode and the upper limit Pt_lim being smaller than the upper limit Pr_lim, inhibits switching to a sport mode.

The present invention is notably directed to methods and systems for protecting a pre-charge circuit. The present invention is further directed to related computer-implemented program product. The method comprises monitoring the current flowing through the current limiting device, calculating the energy loading of the current limiting device over time, and managing the system state to prevent damaging operation of the pre-charge circuit.

An alternating current (AC) charging device for a motor vehicle may include: a neutral conductor; a phase conductor; a rectifier; a smoothing capacitor electrically connected to the rectifier; a mains connection; a precharge circuit arranged between the mains connection and the smoothing capacitor, the precharge circuit precharging the smoothing capacitor; and a second phase conductor electrically connected to the phase conductor by a cross-connection line. The neutral conductor and the phase conductor are connected to the rectifier. The precharge circuit is disposed in the neutral conductor.

An apparatus, for charging a battery for a vehicle, includes a PFC circuit comprising a rectifier for rectifying an AC power to a DC power, and a link capacitor for smoothing the rectified DC power, a bidirectional DC-DC converter including a first switch for converting the DC power of the PFC circuit to an AC power, a transformer for boosting or reducing a voltage of the AC power converted at the first switch, and a second switch for rectifying an AC power from the transformer to a DC power, and a controller configured to control a phase of a PWM signal applied to the second switch such that the link capacitor is charged by an electrical power from the battery, when a voltage of the link capacitor is below a predetermined voltage prior to entering a battery charging mode.

A method for controlling the activation of an electric machine in voltage control mode for an electrical network of a motor vehicle following a failure of a traction battery present in a traction network of the vehicle. The traction network includes the traction battery, the electric machine, an inverter and a DC-to-DC converter connecting the traction battery to an onboard network of said motor vehicle. The method includes a step of precharging capacitors present in the electrical network and a step of activating the electric machine in voltage control mode for the electrical network. The activation of the electric machine in voltage control mode is activated before the deactivation of precharging.

A method for preventing an inrush current of an electric vehicle charger may include the steps of determining whether there is a need for an increase or decrease in a charging current level while currently supplied to an electric vehicle to be charged; decreasing the charging current level at a predetermined ratio when it is determined that there is the need for the increase or decrease in the charging current level; checking whether an inrush current occurs for a first time; activating or deactivating at least one charging module to increase or decrease the charging current level according to the request of the electric vehicle to be charged, when the inrush current does not occur for the first time; checking whether the inrush current occurs for a second time; and increasing the charging current level by the charging current level requested by the electric vehicle to be charged, when the inrush current does not occur for the second time.

A precharge controller includes a main contactor, a capacitor, a precharge contactor, a current sensor, and a control unit. When starting a power supply from a battery to load, the control unit starts precharging by closing the precharge contactor when a detected current is equal to a preset value or lower, determines completion of precharging when the detected current once equal to or exceeded a first threshold value falls to a second threshold value or lower, and closes the main contactor.

A charging management method for an automotive electronic super capacitor includes: detecting a voltage difference between a charging power supply and a super capacitor, and comparing the voltage difference with a first threshold voltage and a second threshold voltage, wherein the first threshold voltage is greater than the second threshold voltage; according to a comparison result, by adopting constant-current charging and controlling a unidirectional conduction module to turn on, causing the charging power supply to charge the super capacitor through a charging module until a voltage across the super capacitor reaches a voltage of the charging power supply; and turning off the charging module so that a low voltage difference is avoided in which case the super capacitor is discharged to the charging power supply through the charging module.