Circuitry to measure individual battery cells of a battery pack and make corrections to account for environmental differences between battery cells and their associated measuring circuit. Several cell supervision circuits (CSCs) may be placed to monitor an...

The disclosed device for controlling charging of a secondary battery includes a step for calculating an amount of heat generated by a secondary battery on the basis of an inter-electrode-plate voltage, internal resistance, a current value, and charging eff...

A method includes: receiving a temperature indication, the temperature indication being a function of a temperature of a power pack (30) of a portable electronic device (10); determining, as a function of the temperature indication, whether the temperature...

A battery charger detects a battery voltage, a battery temperature, and computes a change in the battery voltage between two timings at which the battery voltages are detected and also a change in the battery temperature between two timings at which the ba...

Battery charger (20) including a power source circuit (100) that is connected with an external power source and battery cells (12) of a battery pack (10). The external power source supplies power to the power source circuit (100), which supplies charging c...

The charging method includes providing a current to the battery pack, sensing first and second battery temperatures, determining a first temperature change rate between the first and second battery temperatures, sensing a third battery temperature, determi...

Battery charging method wherein the end of charging is determined by the variation of its temperature comprising the steps consisting of: periodically measuring the temperature of the battery (E2) as well as the variation of battery temperature per unit of...

Charge is performed while restricting rises in temperature of batteries by maintaining the rise in temperature constant, and charge is terminated when the current value becomes not more than a specified value indicating completion of charge, when the tempe...