A switch mode control circuit, comprising a battery link configured to connect to a battery, a capacitor link configured to connect to a capacitor, and a pre-charge circuit connected in series between the battery link and the capacitor link configured to limit inrush current to the capacitor during initial power connection. The pre-charge circuit includes a switching mechanism configured to alternate between an open state and a closed state, a shunt resistor to monitor the current, and a controller operatively coupled to the switching mechanism configured to control a duty cycle of the switching mechanism. The controller dynamically adjusts the duty cycle of the switching mechanism by intermittently closing the switching mechanism until a predetermined voltage is achieved, and upon achieving the predetermined voltage, the controller maintains the switch in the closed state to enable continuous direct current flow from the battery to the capacitor.

A switch mode control circuit, comprising a battery link configured to connect to a battery, a capacitor link configured to connect to a capacitor, and a pre-charge circuit connected in series between the battery link and the capacitor link configured to limit inrush current to the capacitor during initial power connection. The pre-charge circuit includes a switching mechanism configured to alternate between an open state and a closed state, a shunt resistor to monitor the current, and a controller operatively coupled to the switching mechanism configured to control a duty cycle of the switching mechanism. The controller dynamically adjusts the duty cycle of the switching mechanism by intermittently closing the switching mechanism until a predetermined voltage is achieved, and upon achieving the predetermined voltage, the controller maintains the switch in the closed state to enable continuous direct current flow from the battery to the capacitor.

The present invention relates to a method for carrying out pulsed charging of an energy storage element (4) comprising, in a first phase of a charging cycle (E1), controlling a voltage profile (VC) having voltage regulation-driven increments (S1, S2, S3, S4, S5) defining a current profile (IC) in a charging cycle of a predetermined duration, and wherein a voltage increment (S1, S2, S3, S4, S5) is computed at a voltage amplitude at the time of a calculation step i according to a function depending on an estimate of the no-load voltage and on an estimate of the internal resistance at said time, on a coefficient n determining the charging duration and on the nominal capacity of the storage element. The invention is applicable to the fast-charging protocol, in particular for electromobility applications.

A charging device, a charging control method, an energy management system and a storage medium are provided. The charging device includes: a charging circuit including a voltage stability control circuit, an output port and an input port; the voltage stability control circuit being connected to a high-voltage alternating current through the input port and connected to a battery through the output port, and configured to convert the high-voltage alternating current into a low-voltage direct current, charge the battery with a positive pulse current during a first period and charge the battery with a negative pulse current during a second period; and an energy absorption circuit connected in parallel with the charging circuit and configured to absorb the negative pulse current.

A cascaded energy storage system comprises N sub-modules which are connected in cascade, wherein N is greater than or equal to 2. The modulation method comprises: in an odd period, according to a first correspondence, using N carriers to modulate waveform signals output by the N sub-modules; and in an even period, according to a second correspondence, using the N carriers to modulate the waveform signals output by the N sub-modules, wherein in the first correspondence and the second correspondence, the N carriers are in one-to-one correspondence with the N sub-modules, and the first correspondence is different from the second correspondence.