This Application pertains to a charging control method including: setting a temperature range when a wearable electronic device is being charged according to a user demand; when the charging starts, turning on a wirelessly receiving coil of the wearable electronic device and using it to generate a charging current for charging the wearable electronic device; when it is monitored that a value of the charging current of the wearable electronic device rises to a preset constant-current charging current value, acquiring in real time a temperature value of the wearable electronic device; and judging whether the temperature value is within the temperature range; and if yes, maintaining the present value of the charging current of the wearable electronic device; and if not, changing the value of the charging current of the wearable electronic device, so that the temperature value of the wearable electronic device is within the temperature range.

A method and apparatus with battery short circuit detection are included. In one general aspect, a processor-implemented method includes, based on battery data measured by a battery and a battery model of the battery, determining a detection parameter value used for detecting a short circuit of the battery and a variation factor value correlated with the detection parameter, using the variation factor to extract a reference value corresponding to the detection parameter value from a reference data set, and determining whether a short circuit of the battery has occurred based on a result of comparing the detection parameter value with the reference value.

A switching arrangement for a motor vehicle powered at least partially electrically, including at least one inverter for converting a DC voltage of a high-voltage battery into a multi-phase AC voltage for a travel drive, at least one intermediate circuit capacitor connected to the inverter, and at least one pre-charge resistor, wherein, in a pre-charge mode, the pre-charge resistor serves to prevent current spikes during charging of the at least one intermediate circuit capacitor and, in a heating mode, serves for heating a coolant, wherein electrical current flows through the inverter in both the pre-charge mode as well as in the heating mode.

A power supply system that includes a traction battery, and a secondary battery that includes one or more hybrid modules having one or more low temperature chemistries. The power supply system also has one or more temperature sensors, and a switching device that connects or disconnects the secondary battery or the traction battery from a high-voltage DC (Direct Current) bus of an electric vehicle based on measurements of the one or more temperature sensors.

Various embodiments include a method for operating a storage system with two battery storage units, each with two battery cells and a battery management system, and an energy management unit with a processor unit. The method may include: providing phase transition data of the cells and transmitting said data to the EMU; the battery management systems providing states of charge; querying an amount of energy take-up to be provided and/or an amount of energy discharge to be provided; ascertaining a distribution result among the battery storage units based on an optimization problem solved by optimizing a target function, and wherein the phase transition data, the state of charge, the amount of energy take-up, and/or the amount of energy discharge are incorporated as optimization parameters; and charging or discharging the battery storage units in accordance with the distribution result.

An electronic device may include a battery, a charging circuit, at least one sensor, a plurality of temperature sensors disposed respectively at different positions, at least one processor operatively coupled to the battery, the charging circuit, the at least one sensor, or the plurality of temperature sensors, and memory. The memory storing instructions which are configured to, when executed, cause the electronic device to, measure temperature values at intervals of a predefined period using the plurality of temperature sensors during charging, identify a heat state based on at least in part of the measured temperature values, identify a user contact state using the at least one sensor, and control charging power for the battery through the charging circuit based on the heat state and the user contact state. Various other embodiments are also available.

Embodiments of the present disclosure provide a battery protection board, a battery and a mobile terminal. A battery protection board includes a protection circuit and a detection circuit. The protection circuit is configured to be coupled to a charge and discharge circuit of a battery in a mobile terminal. The detection circuit is coupled to at least part of the protection circuit and configured to detect a voltage drop generated by an impedance of the at least part of the protection circuit and to determine a charging current or a discharging current of the charge and discharge circuit according to the voltage drop and the impedance of the at least part of the protection circuit during a charge and discharge process of the battery.

An electronic device and a method thereof are provided. The electronic device includes a memory, a battery, a charging circuit for charging the battery using current supplied from a power supply device, a slew rate variable circuit electrically connected to the charging circuit, and a processor electrically connected to the memory, the battery, the charging circuit, and the slew rate variable circuit. The processor is configured to control the charging circuit to control the charging of the battery, to monitor a state of the electronic device during battery charging, and to control the slew rate variable circuit based on the state of the electronic device to change a slew rate related to the battery charging.

A wireless charging method in a wireless power transmitter, the method including sensing an object in a charging region, measuring a quality factor value, receiving information including a reference quality factor value, detecting a foreign object using the measured quality factor value and the reference quality factor value, and transmitting a response signal that includes ACK information or NAK information depending on whether or not the foreign object is detected. Further, the wireless power transmitter transmits information including a first guaranteed power value when the response signal includes the ACK information, and transmits information including a second guaranteed power value when the response signal includes the NAK information, and the first guaranteed power value is greater than the second guaranteed power value.

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.