Method and device for determining the charge status of a battery
First Claim
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1. A method of determining a charge status of a battery, comprising:
- determining a first battery charge status as a function of a measurement of a no-load voltage of the battery;
determining a second battery charge status as a function of an integration of a battery current over time; and
determining a weighted average from the first and second battery charge statuses in order to obtain an average battery charge status.
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Abstract
A method of determining the charge status of a battery, in particular an automotive battery, comprising the following steps:
determining a first battery charge status socU0 on the basis of a measurement of the no-load voltage of the battery,
determining a second battery charge status soci on the basis of integration of a battery current over time, and
forming a weighted average from battery charge states socU0 and soci thus determined, to obtain an average battery charge status soc.
35 Citations
6 Claims
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1. A method of determining a charge status of a battery, comprising:
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determining a first battery charge status as a function of a measurement of a no-load voltage of the battery;
determining a second battery charge status as a function of an integration of a battery current over time; and
determining a weighted average from the first and second battery charge statuses in order to obtain an average battery charge status. - View Dependent Claims (2, 3, 4)
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4. The method according to claim 3, wherein the weighting factor is predetermined on the basis of an equation of the form:
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5. A device for determining a charge status of a battery, comprising:
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a first arrangement for determining a first battery charge status as a function of a measurement of no-load voltage of the battery;
a second arrangement for determining a second battery charge status as a function of an integration of a battery current over time; and
a third arrangement for determining a weighted average from the first and second battery charge statuses in order to obtain an average battery charge status. - View Dependent Claims (6)
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Specification