An electrified vehicle may be additionally equipped with a swappable battery, and a power source management method for the same. The electrified vehicle includes a driving power unit including a motor and an inverter, a main battery unit electrically connected to the driving power unit, the main battery unit including a first battery and a first BMS for controlling the first battery, the main battery unit being fixedly disposed in the electrified vehicle, and a DC converter electrically connected to the main battery unit, the DC converter including a connector, in which, when a swappable battery unit including a second battery and a second BMS for controlling the second battery may be connected to the connector, the first BMS acquires second battery information output by the second BMS.

A sealed lead acid (SLA) battery jump starter system that charges and recharges via a single two-way USB, thus providing for a two-way power in/power out feature using a single USB port. The output is preferably provided with a ‘triple voltage select’ feature. In one non-limiting embodiment, the triple voltage select feature can allow for an output of either 5V, 12V or 20V. The system provides for higher power, a versatile design, and higher efficiency by integrating a USB charging circuit to recharge a lead acid battery in conjunction with drawing power from the lead acid battery to provide a preferred triple output switch mode selectable power. The system provides for a USB rechargeable charging circuit that can be capable of providing input low power to recharge lead acid batteries and also providing power out (preferably triple voltage and current choices) to recharge high output electronics.

To provide a constant voltage DC supply device capable of supplying a direct current at a predetermined voltage for a long time irrespective of characteristics of a storage battery and the like. The constant voltage DC supply device for supplying a direct current at a predetermined voltage from a specific power generation unit, including: a plurality of power storage units 10a, 10b; a drive units 30 that is connected to the power storage units and rotating/driving by power supplied from any one of the power storage units; a plurality of the power generation units 40a, 40b connected to the drive units, respectively, and generating power by driving of the drive units; and a control unit 30 for controlling connection between the plurality of power storage units and the driving unit and between the power generation units other than the specific power generation unit 40b and the power storage units 40a, in which wherein the control unit executes control such that, when a voltage of the power storage unit supplying the power to the drive unit falls to a first voltage or less, the power is supplied from the power storage unit other than power storage part and to charge at least one power storage part other than that power storage unit is charged.

A method of controlling charge of a vehicle battery includes: determining, by a control unit, whether a high voltage battery and a low voltage battery are charged in a first charging mode, a second charging mode, or a third charging mode; and charging at least one of the high voltage battery or the low voltage battery by controlling a first full-bridge circuit unit, a second full-bridge circuit unit, and a low voltage direct current (DC) converter unit based on the determined first, second or third charging mode.

A mobile charging station for charging an electric construction vehicle during a transportation thereof includes a transportation vehicle. The transportation vehicle includes a first electric power source. The electric construction vehicle is adapted to be positioned on the transportation vehicle for transportation thereof. The mobile charging station includes a power management device adapted to be positioned on the transportation vehicle. The power management device is adapted to be coupled with each of the first electric power source and a battery system associated with the electric construction vehicle. The power management device is adapted to receive a first amount of electric power from the first electric power source and regulate the first amount of electric power received from the first electric power source. The power management device is further adapted to supply a second amount of electric power to the battery system.

A disclosed system may include (1) an artificial-reality display dimensioned to be worn by a user, the artificial-reality display comprising (A) a battery and (B) at least one recipient charging element, and (2) a charging case dimensioned to accommodate the artificial-reality display, the charging case comprising (A) at least one source charging element configured to interface with the recipient charging element of the artificial-reality display to facilitate charging the battery of the artificial-reality display and (B) at least one alignment guide that forces the recipient charging element of the artificial-reality display to energizingly couple with the source charging element of the charging case. Various other apparatuses, systems, and methods are also disclosed.

A power system for a vehicle includes: a high voltage battery; a low voltage DC-DC converter configured to step down a voltage of the high voltage battery and to output the stepped down voltage; a low voltage battery charged by an output current of the low voltage DC-DC converter, where the low voltage battery includes a first cell group including a plurality of battery cells, and a second cell group connected in parallel with the first cell group and including a plurality of battery cells; and a plurality of switches configured to electrically connect or disconnect the first cell group or the second cell group with the low voltage DC-DC converter, electrical loads configured to receive power from at least one of the low voltage DC-DC converter and the low voltage battery; and a controller configured to control opening or closing of the plurality of switches.

An electric power management system is a system that performs an exchange of electric power with an electric power system of an electric power company that is a counterparty of the exchange of the electric power, and includes a plurality of the vehicles, each including a battery, and a server that manages an exchange of the electric power between the battery of each of the vehicles and the electric power system. The server manages the exchange of the electric power for each vehicle group in which the vehicles are bundled, and configures the vehicle groups in advance such that distributions of the electric power supply and demand characteristics of the batteries of the vehicles included in the vehicle groups are the same or similar.

An apparatus for communication and balancing in a battery system includes a battery pack connected to a management network. The management network is configured to communicate with a master controller via a communication bus. The apparatus is configured to operate in a communication mode and a balancing mode.

A jump starter device can include sensors to measure data of a vehicle coupled to the jump starter device. The jump starter device can include a controller configured to process the load data to determine the status of the load, such as the conditions of the vehicle connected to the jump starter.