Device and method for battery state determination
First Claim
1. A method for determining the state of a battery using a microprocessor comprising the steps of:
- receiving measurements representative of at least one of a battery terminal voltage and a battery terminal current from a first unit;
using a second unit to determine at least one characteristic variable for a battery state from at least one of the measured battery terminal voltage and the measured battery current;
using a microprocessor to statistically assess the at least one characteristic variable for the battery state by performing a statistical process check;
defining an observation window for the at least one characteristic variable within which the at least one characteristic variable is assumed to be steady-state; and
identifying an implausible value, which is not caused by the battery, for the at least one characteristic variable if the scatter of the at least one characteristic variable exceeds a defined scatter limit.
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Accused Products
Abstract
A method for determining the state of a battery includes receiving measurements representative of at least one of a battery terminal voltage and a battery terminal current from a first unit and using a second unit to determine at least one characteristic variable for a battery state from at least one of the measured battery terminal voltage and the measured battery current. The method also includes using a microprocessor to statistically assess the at least one characteristic variable for the battery state by performing a statistical process check. The method further includes defining an observation window for the at least one characteristic variable within which the at least one characteristic variable is assumed to be steady-state and identifying an implausible value, which is not caused by the battery, for the at least one characteristic variable if the scatter of the at least one characteristic variable exceeds a defined scatter limit.
15 Citations
16 Claims
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1. A method for determining the state of a battery using a microprocessor comprising the steps of:
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receiving measurements representative of at least one of a battery terminal voltage and a battery terminal current from a first unit; using a second unit to determine at least one characteristic variable for a battery state from at least one of the measured battery terminal voltage and the measured battery current; using a microprocessor to statistically assess the at least one characteristic variable for the battery state by performing a statistical process check; defining an observation window for the at least one characteristic variable within which the at least one characteristic variable is assumed to be steady-state; and identifying an implausible value, which is not caused by the battery, for the at least one characteristic variable if the scatter of the at least one characteristic variable exceeds a defined scatter limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for battery state identification comprising:
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a unit for measuring at least one of battery terminal voltage and battery terminal current; a unit for determining at least one characteristic variable for the battery state from at least one of the measured battery terminal voltage and the measured battery current; and an assessment unit configured to statistically assess the at least one determined characteristic variable using a statistical process check; wherein the assessment unit is configured to define an observation window for the at least one characteristic variable within which the at least one characteristic variable is assumed to be steady-state; wherein the assessment unit is configured to identify an implausible value, which is not caused by the battery, for the at least one characteristic variable if the scatter of the at least one characteristic variable exceeds a defined scatter limit. - View Dependent Claims (13, 14, 15, 16)
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Specification