An electronic device including an antenna which is used for near field communication and converts to electrical power a magnetic field generated when near field communication is performed with an external device, a battery which is chargeable by at least part of the electrical power, and a processor which determines whether or not a predetermined condition has been satisfied, and controls charge of the battery by the part of the electrical power on basis of a result of the determination.

A system is disclosed for determining complex impedance characteristics of one or more battery cells based on the charge signal applied, or to be applied, to the battery cell. Implementations may include measuring the impedance of a battery cell to, in some instances, determine a frequency component or harmonic that defines, at least a portion, of a waveform shape for charging the battery cell. In one implementation, the impedance at the battery cell may be measured or estimated from a discrete charge period being applied to the battery cell or from multiple discrete charge periods applied to the battery cell. The measured differences between the amplitude and time components of the voltage and current waveforms may be used to determine or estimate the magnitude, phase shift, real, and/or imaginary values of the impedance at the battery cell.

A vehicle is configured to perform charging/discharging between an EVPS and the vehicle via a vehicle inlet. The vehicle includes an ECU that controls charging/discharging of the vehicle, and a control signal circuit including at least one control signal line connected between the vehicle inlet and the ECU. The control signal circuit includes a compatible circuit for ensuring compatibility of a control signal transmitted through the at least one control signal line between the EVPS and the ECU, and an isolating element of capacitive coupling type or magnetic coupling type electrically isolating the compatible circuit from the ECU.

The battery output extension circuit has a switch to supply energy from a first rechargeable battery to charge a capacitor and a second rechargeable battery and then interrupt that supply of energy. The battery output extension circuit has another switch to subsequently enable energy to be discharged from the capacitor to power a load. The sequential charging of the capacitor and the second rechargeable battery, interruption of the charging, and subsequent discharging of the capacitor to power a load is repeatedly performed. A switching configuration can reverse the direction of charging such that the second rechargeable battery supplies the energy to perform a similar repeatedly performed sequential charging of the capacitor and the first rechargeable battery, interruption of the charging, and subsequent discharging of the capacitor to power the load.

An energy storage system can comprise a stack of multiple battery modules, a plurality of ultrasound emitter transducers, a plurality of ultrasound receiving transducers, one or more excitation modules, one or more capture modules, and an ultrasound battery management system. Each ultrasound emitter transducer and each ultrasound receiving transducer can be acoustically coupled to a surface of a respective one of the battery modules. The excitation module(s) can be electrically interfaced with the plurality of ultrasound emitter transducers, and the capture module(s) can be electrically interface with the plurality of ultrasound receiving transducers. The ultrasound battery management system controller can be configured to initiate battery module ultrasound interrogation sequences.

A control method of a power supply circuit is provided. The power supply circuit includes an AC/DC conversion circuit, a DC/DC conversion circuit, a BOOST circuit, and a BUCK/BOOST circuit that are commonly connected to a DC bus, a first device is connected to a first end of the AC/DC conversion circuit, and a DC load is connected to a second end of the BUCK/BOOST circuit. A bus voltage of the DC bus and a photovoltaic output voltage of a first photovoltaic module are obtained, and when the photovoltaic output voltage is greater than a preset input voltage, operating states of the AC/DC conversion circuit, the DC/DC conversion circuit, the BOOST circuit, and the BUCK/BOOST circuit are respectively controlled according to demand power of the first device, demand power of a battery module, demand power of a DC load, and the bus voltage.

A charging system includes a voltage conversion circuit, a control circuit, an input end Vin and an output end Vout. The voltage conversion circuit and the control circuit are connected to M batteries, the input end Vin is connected to an external power supply, and the output end Vout is connected to a load. The control circuit is configured to switch a connection relationship between the M batteries, to connect at least one of the M batteries to the voltage conversion circuit, where the connection relationship includes at least one of a serial connection or a parallel connection. The voltage conversion circuit is connected to the input end Vin and the output end Vout; is configured to receive power from the external power supply through the input end Vin, and charge the at least one battery; and is further configured to supply power to the load through the output end Vout.

Power packs configured to supply power to a common load are provided. A power pack includes a first power source; a second power source; at least one adapter configured to receive the common load and electrically couple the common load to at least one of the first power source or the second power source for supplying power to the common load; a tether interface electrically coupled to the at least one adapter, the first power source, and the second power source and configured to arrange the first power source and the second power source in series or in parallel; and a control circuit comprising at least one controller for performing a plurality of operations.

A battery control apparatuses may include a measuring unit for measuring a voltage of a battery, a memory for storing a multi-stage charging protocol data, and a processor for identifying a SOC of the battery based on the voltage measurement value. The processor may perform a temporary discharging procedure, when the SOC of the battery reaches the first criterion SOC while the constant current charging procedure using the first current rate is in progress. The processor may also determine an adjusted second current rate different from the second current rate based on discharging information of the temporary discharging procedure and, after the temporary discharging procedure is finished, perform a constant current charging procedure using the adjusted second current rate.

An apparatus and a method for an aerosol generating device is described, the apparatus including a charging controller. The charging controller is configured to control charging of a battery using a power supply at a charging current dependent, at least in part, on power capabilities of the power supply.