The present invention generally relates to automatic charging systems and methods for mobile devices that require more power than is possible with inductive chargers. A mobile device charging cabinet is provided, wherein each mobile device inserted for charging contains a charging receiver that is attached to a cover, such as a laptop cover. The cabinet further comprises a multiplicity of base stations, each of which provides a grid of conductive alternating polarity connection plates, spaced to accept two prongs similarly spaced on the bottom of the charging receiver. Power flows from the base station automatically through the charging receiver to the mobile device when it is placed on a surface containing a base station within the cabinet. Computer software is included to control and monitor all functionality of the system, such as optimal power flow and battery charging; and further provides key asset management tools to allow a user to know, for example, the number and exact location of all devices using the invention and under his or her control.

The power supply device performs one-side charge control for controlling the system main relay, the charging relay, the series connection relay, the parallel connection relay, and the first and second neutral point relays so that only the first power storage unit is charged using the external DC power until the voltage of the first power storage unit becomes equal to or higher than the voltage of the second power storage unit before the first and second neutral point relays are turned on and the power storage device is charged using the external DC power.

The present disclosure relates to a wake-up function included in a battery management system (BMS) and a BMS wake-up method using the same. The BMS includes a micro-controller unit (MCU) configured to manage a battery, and a protection circuit configured to monitor the battery. When the protection circuit detects an abnormality in the battery while the BMS is in one of a shutdown mode and a sleep mode, the protection circuit outputs a wake-up signal to the BMS.

A system for controlling charging and discharging of a battery includes a charging and discharging switch configured to perform a switching operation for the charging and discharging of a battery. An analog front end (AFE) unit is configured to detect a voltage of the battery and to be stopped after transmitting a specific signal when detecting a voltage having a certain voltage parameter value or more. A main controller unit (MCU) configured to turn off the charging and discharging switch when receiving the specific signal from the analog front end unit.

A battery module includes a first set of power contacts and a first set of signal contacts. A battery pack is operable to deliver electrical power to the set of power contacts. An electronic isolation system is operable to electrically disconnect and electrically connect the battery pack and the first set of power contacts. An electronic control system is operable to obtain a comparisons between a state of charge, state of health, temperature and power of the battery module and an electrical device. A closing parameter is calculated that is based on at least one of the comparisons. The closing parameter is compared to a predefined closing parameter value to result in a connect determination. The electronic isolation system connects or disconnects the battery pack to the first set of power contacts based on a positive or a negative result respectively of the connect determination.

Described herein is an electric vehicle charging arrangement for charging an electric vehicle. The electric vehicle charging arrangement includes: an electric vehicle charger configured for providing a direct current (DC) to the electric vehicle, a power cabinet configured for providing a DC to the electric vehicle charger, and a direct current bus arranged between the power cabinet and the electric vehicle charger and configured to transport the DC from the power cabinet to the electric vehicle charger, where a capacitive filter is installed on the DC bus and in the electric vehicle charger.

A neck fan includes a hanging main body and a first fan assembly. The hanging main body includes an inner end portion that is in contact with the neck of a user. The first fan assembly includes a straight-tube-shaped first fan shell. The first fan shell is connected to a lower end portion of the hanging main body; the first fan shell is provided with a third air inlet and a third air outlet; and the first fan assembly is configured to drive air flow to be blown from the third air inlet towards the inner end portion via the third air outlet.

An external battery includes a battery cell, a charging unit configured to generate a charging current with an external power supplied from a charger to an input terminal thereof and transfer the charging current to the battery cell, a main controller unit (MCU) configured to control charging of the battery cell by the charging current, and a switch unit between the charging unit and the battery cell, wherein, when the switch unit is in an on state, the MCU changes to an active mode and allows the charging current to be transferred to the battery cell, and when the switch unit is in an off state, entering by the MCU a sleep mode and cutting off the charging current transferred to the battery cell.

An abnormal cell detection method of a battery pack including a plurality of cells, the method including obtaining a first plurality of discharge rates for each cell during a first rest period in a cell balancing state, prohibiting a cell balancing of the plurality of cells if a first cell having a first discharge rate greater than or equal to a first threshold value is detected, obtaining a second plurality of discharge rates during a second rest period for each of the plurality of cells in a cell balancing prohibition state, and detecting an abnormal cell having a second discharge rate greater than or equal to a second threshold value.

Provided is a method for maintaining the operation of a converter in a communication failure statue. A converter controller is operated depending on an operating state of a vehicle. After a driveable high voltage is applied from a main battery, the converter controller determines whether a command signal from a vehicle controller is present. If the command signal is not present as a result of the determination, the converter controller converts the driveable high voltage to a predetermined self-locking voltage by taking into account a relay operation of a relay circuit.