Battery charger with charging current variation based on a temperature difference between the battery and its environment

A battery charger whose charging current is shut off on the basis of the temperature difference between the ambient temperature, measured by means of a first sensor (RA), and the battery temperature, measured by means of a second sensor (RB). The error in the measurement of the temperature differenc...

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Bibliographic Details
Main Authors O. J. BISSCHOP, W. LINDEBOOM
Format Patent
LanguageEnglish
Published 25.11.1998
Edition6
Subjects
BASIC ELECTRIC ELEMENTS
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
SYSTEMS FOR STORING ELECTRIC ENERGY
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Summary:A battery charger whose charging current is shut off on the basis of the temperature difference between the ambient temperature, measured by means of a first sensor (RA), and the battery temperature, measured by means of a second sensor (RB). The error in the measurement of the temperature difference, which is caused by the input voltage dependent heat generation by the power supply (PS) in the battery charger, is compensated by a third signal (k*Vi) which is representative of the anticipated additional heat generation as a result of a varying input voltage (Vi).
Bibliography:Application Number: CN19971091183