Abstract: A power converter device is disclosed herein. The power converter device includes a printed wiring board assembly, a cold plate base and a shell plate assembly. The cold plate base is fastened under the printed wiring board assembly for dissipating heat generated by the printed wiring board assembly. The shell plate assembly having a top shell plate, a bottom shell plate, at least two side plates respectively mounted on the cold plate base in different orientations. The printed wiring board assembly and the cold plate base are enclosed with the shell plate assembly.

Abstract: A power converter device is disclosed herein. The power converter device includes a printed wiring board assembly, a cold plate base and a shell plate assembly. The cold plate base is fastened under the printed wiring board assembly for dissipating heat generated by the printed wiring board assembly. The shell plate assembly having a top shell plate, a bottom shell plate, at least two side plates respectively mounted on the cold plate base in different orientations. The printed wiring board assembly and the cold plate base are enclosed with the shell plate assembly.

Abstract: In one aspect of the present invention, a battery charging system has a first rectifier adapted for converting an AC voltage at an input thereof to a first DC voltage at an output thereof; a power factor correction (PFC) circuit coupled to the first rectifier, for correcting the power factor of the battery charging system and outputting a second DC voltage; a first power converter coupled to the PFC circuit, for converting the second DC voltage to a third DC voltage; a second power converter coupled to the first power converter, for converting the third DC voltage to a fourth DC voltage to be delivered to a battery; and a first controller adapted for sensing the fourth DC voltage at the output of the second power converter for regulating the second power converter to maintain the fourth DC voltage at a predetermined value.

Abstract: An AC-DC power converter is provided, and includes a phase-shifting transformer, at least one rectifier set and at least one DC-DC converter, wherein the phase-shifting transformer has a primary winding and at least one secondary winding, and the at least one secondary winding is configured as at least one winding unit; each rectifier set has at least one rectifier, and each rectifier is electrically connected with the secondary winding of a corresponding winding unit; and the DC-DC converter is electrically connected with a corresponding rectifier set and outputs a predetermined DC voltage. A DC charging station is also provided correspondingly. The phase-shifting transformer has at least one secondary winding, and the secondary windings are configured as at least one winding unit, thus providing different phase-shifting angles based on the actual number of windings in each winding unit, thereby decreasing current harmonic components and increasing the system power factor.

Abstract: An electronic device with uniform heat-dissipation is disclosed. The electronic device comprises a housing, a circuit board, and a metal shielding. The housing has concavities at inner sides thereof, and the circuit board is disposed within the housing. The metal shielding is disposed between the housing and the circuit board and has protrusions at outer sides thereof to match up the concavities of the housing. Thereby, the metal shielding substantially stays close to the housing for allowing the electronic device to dissipate heat uniformly.