Method and apparatus for automotive battery condition indication
First Claim
1. A method of monitoring and indicating a condition of an automotive battery, said method comprising the steps of:
- (i) extracting a ripple voltage component from a battery voltage present in an automotive battery supply line during engine running, said battery voltage constituted of a DC voltage component and said ripple voltage component;
(ii) generating a ripple voltage characteristic comparison reference based on said ripple voltage component; and
(iii) comparing said ripple voltage characteristic comparison reference with said ripple voltage component to determine the condition of said automotive battery [2].
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Abstract
The present invention concerns a system and an apparatus for monitoring the electrical condition of an automotive battery [2] in use. The main purpose of this invention is to monitor and indicate automotive battery conditions, namely liquid electrolyte level and level of battery plate deterioration using the concept of ripple voltage. The present invention utilises ripple voltage present in battery supply line [4] as reference to deduce the condition of the said battery [2]. The method comprises the steps of first measuring the ripple voltage present in battery supply line [4] when engine is running, comparing the ripple voltage to a range of acceptable values determined by how bad the deterioration of battery is before issuing a signal or by nominal setting that best fit automotive vehicles and lastly providing indication when the ripple voltage exceeds the range of pre-set values. The said apparatus comprises a ripple voltage detector, having the acceptable range setting, connected to battery supply line [4] and an indicator connected to the ripple voltage detector which gives indication when the ripple voltage exceeds the acceptable range set.
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Citations
10 Claims
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1. A method of monitoring and indicating a condition of an automotive battery, said method comprising the steps of:
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(i) extracting a ripple voltage component from a battery voltage present in an automotive battery supply line during engine running, said battery voltage constituted of a DC voltage component and said ripple voltage component;
(ii) generating a ripple voltage characteristic comparison reference based on said ripple voltage component; and
(iii) comparing said ripple voltage characteristic comparison reference with said ripple voltage component to determine the condition of said automotive battery [2]. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for monitoring and indicating a condition of an automotive battery, said apparatus comprising:
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a signal extractor for extracting a ripple voltage component from a battery voltage present in an automotive battery supply line during engine running, said battery voltage constituted of a DC voltage component and said ripple voltage component;
a signal generator for generating a ripple voltage characteristic comparison reference based on said ripple voltage component; and
a comparator for comparing said ripple voltage characteristic comparison reference with said ripple voltage component to determine the condition of said automotive battery. - View Dependent Claims (10)
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Specification