The disclosure provides a charger, a charging device, an energy supply device and a control method of the charger. The charger comprises a housing, a charging position, a charging port and a first heat dissipation unit. The charger comprises a base and a supporting part. The supporting part is arranged on the base. The charging position is arranged on the base and distributed around the supporting part. The charging port is arranged on the charging position and matched with a battery pack. The first heat dissipation unit is arranged on the supporting part for heat dissipation of the battery pack. With the charger of the disclosure, multiple battery packs can be charged at the same time.

A vehicle power supply device converts power from high voltage to low voltage by selectively connecting a predetermined power storage element group to a low voltage electric load from a high voltage power supply formed by connecting power storage elements in series. A leakage current from the high voltage power supply is measured during the dead time period when the power storage element group is not connected to the low voltage electric load. When the value exceeds a predetermined value, the connection between the power storage element group and the low-voltage electric load is interrupted, so that electric shock is prevented.

A battery charger system includes a first circuit configured to connect to a power bus and a second set of battery cells, and a second circuit configured to connect to the power bus and a first set of battery cells. The first circuit including a first switch to electrically connect or disconnect the first circuit to the power bus and the second set of battery cells. The second circuit includes a second switch to electrically connect or disconnect the second circuit to the power bus and the first set of battery cells. The system includes a third circuit configured to connect the first set of battery cells to the second set of battery cells. The third circuit includes a third switch to electrically connect or disconnect the first set of battery cells to the second set of battery cells. A battery charger process and an aircraft-based power system is disclosed as well.

A power adapter assembly and an electrical system. The power adapter assembly is operable to supply power to an electrical device. The power adapter assembly includes a power box including a housing, an electrical circuit supported by the housing, the electrical circuit being operable to receive as input AC power and to output DC power, an adapter controller operable to control the adapter assembly; and an adapter electrically connected to the power box, the adapter including an adapter engagement portion connectable to a device engagement portion to connect the adapter to the electrical device, DC power being output from the electrical circuit through the adapter to the electrical device to power the load, when the adapter engagement portion is connected to the device engagement portion, a communication interface between the adapter assembly and the electrical device being active even when power is not being output to power the load.

Various disclosed embodiments include a switching module for a charger includes a support member, a first busbar coupled to the support member, the first busbar being configured to conduct electrical current, and a second busbar coupled to the support member, the second busbar being configured to conduct electrical current. The switching module also includes a first switch coupled to the first busbar and configured to move a first contactor. The switching module further includes a second switch coupled to the second busbar and configured to move a second contactor. The switching module also includes a third switch coupled to the first busbar and configured to move a third contactor. Further, the switching module includes a fourth switch coupled to the second busbar and configured to move a fourth contactor, the third and fourth switches being configured to electrically connect and disconnect the first and second busbar with at least a second power dispenser.

A traction battery assembly includes battery cells of a battery array, and switches of the battery array. The switches are transitionable between a first configuration and a second configuration. When the switches are in the first configuration, the battery cells of the array are partitioned into a first number of groups of battery cells in parallel with each other. When the switches are in the second configuration, the battery cells of the array are partitioned into a different, second number of groups of battery cells in parallel with each other.

A battery and a battery system including such a battery. The battery includes: a first and a second battery cell arrangement, each including at least one battery cell, a first switch, and a second switch, and an evaluation unit. In each battery cell arrangement, the first switch is connected in series to the battery cell of the battery cell arrangement and the second switch is connected in parallel to the series connection made up of the battery cell and its associated first switch. The battery cell arrangements are connected in series. The evaluation unit is configured to activate the switches of a particular battery cell arrangement independently of the switches of particular other battery cell arrangements.

A rectifier for use in a power supply is provided, including a capacitor charge control circuit operable to enable reduction in bulk capacitance.

An auxiliary power supply device includes an auxiliary power source and a booster circuit. The auxiliary power supply device is configured to be switched among a charging state, a holding state, and a discharging state. The auxiliary power source is configured to be switched between a serial connection mode and a parallel connection mode. The auxiliary power source is configured to perform boosting to supply power to the power supply target when the auxiliary power source is switched to the serial connection mode, and perform backup when the auxiliary power source is switched to the parallel connection mode.

Disclosed herein are regulated power supplies. The power source delivers power to a system load and includes battery units. The power source also includes power flow devices coupled to the battery units that are configured to provide power from the battery units to the system load. Each power flow device corresponds to a respective one of the battery units, and includes a one direction current flow device connected in series with a current regulator between the respective battery unit and the system load.