Patent ID: 6278261
Filing Date: 2001-08-21
Classification: H02J

Abstract:
A battery charging device comprising:a temperature detecting portion for detecting a present temperature of batteries,a temperature rising value outputting portion for obtaining a temperature rising value from the temperature as detected by the temperature detecting portion,a current value retrieving portion for retrieving a current value with which the temperature rising value as output from the temperature rising value outputting portion is made constant,a charge controlling portion for charging the batteries at the current value that has been retrieved by the current value retrieving portion, anda charge terminating portion for terminating charge when at least one of the following conditions are met:(a) when the current value has become not more than a specified value indicating completion of charge,(b) when the temperature keeps on rising beyond the constant temperature rising value even if the current value is decreased, and(c) when a battery temperature has increased beyond a target temperature value to be reached at the time of completion of charge by not less than a specified value.