Provided is a charging device for charging a wireless manual cleaner and a robot cleaner. The charging device includes a first charger comprising a first charging terminal connected to a charging terminal of the manual cleaner, and a first transceiver configured to transmit and receive information to and from the manual cleaner; a second charger comprising a second charging terminal connected to a charging terminal of the robot cleaner, and a second transceiver configured to transmit and receive information to and from the robot cleaner; and a communication line configured to electrically connect the first transceiver and the second transceiver to each other.

A device according to one embodiment includes a first battery to output alternating-current power for driving a motor and connected to a first main circuit that is connected to an inverter; a second battery connected to a second main circuit, having a storage capacity larger than it of the first battery, and having a permissible power output per unit storage capacity smaller than it of the first battery; a DC/DC converter to convert a voltage of the second main circuit to a predetermined voltage and output to the first main circuit; a control circuit to control charging and discharging operations of the first and the second battery and an operation of the DC/DC converter; a first terminal connected to a positive terminal of the first battery; and a second terminal connected to a negative terminal of the first battery.

A portable power source includes a housing and a battery receptacle supported by the housing. The battery receptacle is configured to receive a battery. The portable power source also includes a first power tool battery pack port that is configured to receive a first power tool battery pack. The portable power source further includes a charging circuit coupled to the battery receptacle and the power tool battery pack, and an inverter. The charging circuit is configured to receive power from the battery receptacle and to provide power to the power tool battery pack port. The inverter includes a DC input coupled to the battery receptacle, inverter circuitry, and an AC output. The inverter circuitry is configured to receive power from the battery receptacle via the DC input, invert DC power received from the battery receptacle to AC power, and provide the AC power to the AC output.

A portable power source includes a housing and a battery receptacle supported by the housing. The battery receptacle is configured to receive a battery. The portable power source also includes a first power tool battery pack port that is configured to receive a first power tool battery pack. The portable power source further includes a charging circuit coupled to the battery receptacle and the power tool battery pack, and an inverter. The charging circuit is configured to receive power from the battery receptacle and to provide power to the power tool battery pack port. The inverter includes a DC input coupled to the battery receptacle, inverter circuitry, and an AC output. The inverter circuitry is configured to receive power from the battery receptacle via the DC input, invert DC power received from the battery receptacle to AC power, and provide the AC power to the AC output.

A balancing unit is installed on a battery cell, and includes an element for measuring state parameters of the cell, a wireless communication element, making it possible to send and receive state parameters, and a wireless power transfer element.

A system and method for charging battery packs is provided. The system may include a charging pad comprising a power supply, a charging pad surface, and a microcontroller unit. The power supply may provide charging power. The charging pad surface may include a first charging region and a second charging region. The microcontroller unit may control delivery of charging power to the first charging region and the second charging region such that a device placed in contact with the first charging region is given a higher charging priority than a device placed in contact with the second charging region.

Systems and methods for charging and discharging a plurality of batteries are described herein. In some embodiments, a system includes a battery module, an energy storage system electrically coupled to the battery module, a power source, and a controller. The energy storage system is operable in a first operating state in which energy is transferred from the energy storage system to the battery module to charge the battery module, and a second operating state in which energy is transferred from the battery module to the energy storage system to discharge the battery module. The power source electrically coupled to the energy storage system and is configured to transfer energy from the power source to the energy storage system based on an amount of stored energy in the energy storage system. The controller is operably coupled to the battery module and is configured to monitor and control a charging state of the battery module.

The present application discloses a battery equalization system, a vehicle, a battery equalization method, and a storage medium. The battery equalization system includes: a collection circuit; an equalization circuit; a controller; a charging branch circuit, connected to a charging device and a battery pack; and a first power supply branch circuit, connected to the charging device and the battery equalization system, and configured to supply power to the battery equalization system. When a state-of-charge of the battery pack is full and a cell in the battery pack needs enabling of equalization, the controller controls the charging branch circuit to disconnect, and controls the first power supply branch circuit to keep connected, so that an equalization module performs equalization processing on the cell that needs enabling of equalization.

According to various embodiments, an electronic device comprises a battery, a wireless interface including a coil and configured to wirelessly transmit electric power from the battery via the coil, and at least one processor configured to: perform a wireless charging function of wirelessly transmitting electric power to an external device via the wireless interface, while neither the electronic device nor the external device is being supplied with electric power from an external power source via a wire, and based on identifying that the external device starts being supplied with electric power from an external power source via a wire while performing the wireless charging function, stop performing the wireless charging function of wirelessly transmitting electric power to the external device.

The present disclosure provides a charging method, device, and system. The charging device includes a voltage regulation circuit, and can charge a charged device through voltage step-down or voltage step-up. In addition, the charging device and a charged device can transfer statuses of a circuit and a battery through a change of a switch status, so that the charging device can regulate a charging voltage and/or a charging current based on the statuses of the circuit and the battery.