Provided are a load detection system and a load detection method thereof. The load detection system includes an adjustable power supply (110) and a detection module (12). The adjustable power supply (110) and a to-be-detected load 120 together form a set load detection circuit (11), and the adjustable power supply (110) is configured to output a changing power supply signal to the to-be-detected load (120) through the set load detection circuit (11). The detection module (12) is configured to detect at least two changing electrical parameters in the set load detection circuit (11), acquire an equivalent resistance value of the to-be-detected load (120) according to the at least two changing electrical parameters, and detect whether the to-be-detected load (120) includes a charging device according to a non-linear change curve or a linear change curve formed by the equivalent resistance value and the power supply signal.

An electronic device includes a first connection unit, a second connection unit, and a control unit. The control unit determines whether a first external device is connected to the first connection unit, and controls the electronic device to prevent charging of a battery connected to the first external device with power supplied from a second external device connected to the second connection unit, in a case where the first external device is connected to the first connection unit.

A method and system for charging multi-cell lithium-based batteries. In some aspects, a battery charger includes a housing, at least one terminal to electrically connect to a battery pack supported by the housing, and a controller operable to provide a charging current to the battery pack through the at least one terminal. The battery pack includes a plurality of lithium-based battery cells, with each battery cell of the plurality of battery cells having an individual state of charge. The controller is operable to control the charging current being supplied to the battery pack at least in part based on the individual state of charge of at least one battery cell.

A battery pack including first and second battery contactors respectively having first ends electrically connected to positive and negative electrode terminals of a battery; first and second charging contactors respectively having first ends electrically connected to second ends of the first and second battery contactors; a second power connector of a charger having first and second output terminals respectively electrically connected to the first and second input terminals being connected to the first power connector; and a control unit configured to, when a second power connector of a charger is electrically connected to the first power connector, receive a charging end request signal from the charger, control changes of the first and second charging contactors between turn-on and turn-off states, and diagnose a fault of each of the first and second charging contactors based on first, second or third measured voltages across the first, second or third resistors, respectively.

A controller for providing a DRP port according to USB Type-C standard. A state manager coupled to a power manager for controlling charging and discharging of a battery. A signal transmission module for exchanging a signal with a connection destination via a communication line in the USB cable according to an instruction from the state manager. The signal transmission module is possible to indicate the communication line whether the port is featured as the power supply side or the power reception side. When the port is featured as the power supply side, the state manager supplies an electric power stored in the battery to the connection destination and if the battery becomes the condition of Low Battery, the state manager stops supplying the electric power to the connection destination while maintaining the state that the port is featured as the power supply side.

The present disclosure is directed to a battery pack and a power tool system including a power tool, a battery pack and a battery pack charger. The battery pack includes circuitry to prevent electricity drainage from a plurality of battery cells when the battery pack is only partially mated to the power tool or the battery pack charger.

An intelligent rechargeable battery pack having a battery management system for monitoring and controlling the charging and discharging of the battery pack is described. The battery management system includes a memory for storing data related to the operation of the battery, and the battery management system is also configured to communicate the data related to the operation of the battery to other processors for analysis.

A battery management device includes a detection circuit, a charge control circuit, and a discharge control circuit. The detection circuit is configured to output a first control signal and a second control signal according to a volume of a rechargeable battery. The charge control circuit is electrically coupled to the rechargeable battery and the detection circuit, and configured to open a charge loop of the rechargeable battery according to the first control signal. The discharge control circuit is electrically coupled to the rechargeable battery and the detection circuit, and configured to close a discharge path of the rechargeable battery according to the second control signal.

A method and system for charging multi-cell lithium-based batteries. In some aspects, a battery charger includes a housing, at least one terminal to electrically connect to a battery pack supported by the housing, and a controller operable to provide a charging current to the battery pack through the at least one terminal. The battery pack includes a plurality of lithium-based battery cells, with each battery cell of the plurality of battery cells having an individual state of charge. The controller is operable to control the charging current being supplied to the battery pack at least in part based on the individual state of charge of at least one battery cell.

Provided are a vehicle-mounted power source control apparatus, a vehicle-mounted power source apparatus, and a vehicle control method that are highly versatile. A power source control apparatus sets a setting value corresponding to a combination of loads to be connected to multiple output ports based on information determining a candidate value for a setting value for each combination of the loads. Also, control relating to backup is performed based on the set setting value. By doing so, it is possible to perform control relating to backup in a mode corresponding to the combination of the loads.