Patent ID: 6278260
Filing Date: 2001-08-21
Classification: H02J

Abstract:
A charging device arranged to monitor a charging state of a rechargeable battery by detecting a temperature of the battery, comparing the detected battery temperature with a threshold, and determining whether the battery has reached a state of charge saturation based on a comparison of the detected battery temperature with the threshold, comprising:a battery temperature detector arranged to detect a temperature of the battery;an ambient temperature detector arranged to detect an ambient temperature; anda control circuit arranged to determine whether said battery has reached a state of charge saturation by comparing a temperature detected by the battery temperature detector with a threshold,wherein an input of said control circuit is connected to an output of said ambient temperature detector, said control circuit being arranged to adjust said threshold based on the output of said ambient temperature detector such that when said ambient temperature increases, said threshold is increased, and such that when said ambient temperature decreases, said threshold is reduced.