An electronic device includes: a first processor; a load that operates with power supplied by a rechargeable battery; and a first sensor that obtains information on an output voltage of the rechargeable battery. The first processor determines whether the rechargeable battery is in a low usage state with regard to power supply by the rechargeable battery. Based on the information obtained by the first sensor, the first processor determines a degree of decrease in the output voltage over a period of time during which the rechargeable battery is determined to be in the low usage state. Based on the determined degree of decrease, the first processor detects a deterioration of the rechargeable battery.

An electronic device includes: a first processor; a load that operates with power supplied by a rechargeable battery; and a first sensor that obtains information on an output voltage of the rechargeable battery. The first processor determines whether the rechargeable battery is in a low usage state with regard to power supply by the rechargeable battery. Based on the information obtained by the first sensor, the first processor determines a degree of decrease in the output voltage over a period of time during which the rechargeable battery is determined to be in the low usage state. Based on the determined degree of decrease, the first processor detects a deterioration of the rechargeable battery.

A method for estimating a capacity of a battery unit in an energy storage system of a vehicle is provided. The method includes during at least a first no-load condition of the battery unit, measuring a terminal voltage of the battery unit at a number of points in time to determine a transient voltage response of the battery unit, from the transient voltage response of the battery unit during at least the first no-load condition, estimating at least a first value of an open circuit voltage of the battery unit by means of a battery model, and estimating the capacity of the battery unit based on at least the estimated at least first value of the open circuit voltage.

A method for estimating a capacity of a battery unit in an energy storage system of a vehicle is provided. The method includes during at least a first no-load condition of the battery unit, measuring a terminal voltage of the battery unit at a number of points in time to determine a transient voltage response of the battery unit, from the transient voltage response of the battery unit during at least the first no-load condition, estimating at least a first value of an open circuit voltage of the battery unit by means of a battery model, and estimating the capacity of the battery unit based on at least the estimated at least first value of the open circuit voltage.

A battery device and a battery protection method for same are provided. It is determined, according to electrical capacity of a battery, whether a battery device communicates with an electronic device, and whether the battery is being charged or discharged, whether to control the battery device to enter a shutdown mode.

A battery device and a battery protection method for same are provided. It is determined, according to electrical capacity of a battery, whether a battery device communicates with an electronic device, and whether the battery is being charged or discharged, whether to control the battery device to enter a shutdown mode.

A method of determining state of health (SoH) of a battery is disclosed which includes receiving a predetermined open circuit voltage (V.sub.OC) vs. a state of charge (SoC) characteristics for a pristine battery, establishing a single battery model including physical diffusion characteristics and electrical characteristics based on lumped parameters thereby modeling diffusion resistance and capacitance of particles in the electrodes of the battery as well as electrical characteristics based on electrical resistance and capacitance from one electrode assembly to another, thereby generating equations describing voltage at the associated double-layers, solving the double-layer equations, thereby generating solutions for the double-layer electrical characteristics, and establishing a relationship between the solved double-layer characteristics and the SoC, thereby determining a SoH of the battery based on said relationship.

A battery charging method based on lithium plating detection includes: acquiring a battery charging strategy table after receiving a battery charging instruction; charging a battery according to a charging current in the battery charging strategy table, and performing at least one charging lithium plating detection on the battery during the charging of the battery, to obtain a first lithium plating detection result; continuing the charging of the battery according to the charging current and the charging lithium plating detection of the battery when no lithium plating phenomenon occurs, and stopping the charging lithium plating detection when the lithium plating phenomenon occurs or the charging of the battery is completed; and updating the charging current according to a preset first current reduction strategy when the lithium plating phenomenon occurs, and continuing the charging of the battery according to the updated charging current until the charging is completed.

A battery charging method based on lithium plating detection includes: acquiring a battery charging strategy table after receiving a battery charging instruction; charging a battery according to a charging current in the battery charging strategy table, and performing at least one charging lithium plating detection on the battery during the charging of the battery, to obtain a first lithium plating detection result; continuing the charging of the battery according to the charging current and the charging lithium plating detection of the battery when no lithium plating phenomenon occurs, and stopping the charging lithium plating detection when the lithium plating phenomenon occurs or the charging of the battery is completed; and updating the charging current according to a preset first current reduction strategy when the lithium plating phenomenon occurs, and continuing the charging of the battery according to the updated charging current until the charging is completed.

An apparatus and a method for processing battery cell voltage data, which calculate a moving average by assigning a weight to one or more voltage data acquired from the battery cell and reflect the acquired voltage data to the calculated moving average and use the voltage data to rapidly follow a sudden change of the voltage data applied from the battery cell.