Method of calculating aging factor of battery for hybrid vehicle
First Claim
1. A method of calculating an aging factor of a battery for a hybrid vehicle, comprising the steps of:
- detecting a first actual SOC value of the battery during operation of the vehicle;
storing the first SOC value;
initializing accumulated charge and discharge current amounts;
determining whether the accumulated charge current amount is larger than a first predetermined value;
determining whether the accumulated discharge current amount is larger than a second predetermined value if a charge current amount has not accumulated over the first predetermined value;
detecting a second actual SOC value if a discharge current amount has accumulated over the second predetermined value;
storing the second SOC value;
calculating a theoretical accumulated current amount using the first and second SOC values;
calculating an actual accumulated current amount using the accumulated charge and discharge current amounts; and
calculating the aging factor of the battery using the theoretical and actual accumulated current amounts.
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Abstract
Disclosed herein is a method of calculating the aging factor of a battery for a hybrid vehicle. The method includes the steps of detecting a first actual SOC value of the battery during operation of the vehicle; storing the first SOC value; initializing accumulated charge and discharge current amounts; determining whether the accumulated charge current amount is larger than a first predetermined value; determining whether the accumulated discharge current amount is larger than a second predetermined value if a charge current amount has not accumulated over the first predetermined value; detecting a second actual SOC value if a discharge current amount has accumulated over the second predetermined value; storing the second SOC value; calculating a theoretical accumulated current amount using the first and second SOC values; calculating an actual accumulated current amount using the accumulated charge and discharge current amounts; and calculating the aging factor of the battery using the theoretical and actual accumulated current amounts.
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Citations
7 Claims
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1. A method of calculating an aging factor of a battery for a hybrid vehicle, comprising the steps of:
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detecting a first actual SOC value of the battery during operation of the vehicle; storing the first SOC value; initializing accumulated charge and discharge current amounts; determining whether the accumulated charge current amount is larger than a first predetermined value; determining whether the accumulated discharge current amount is larger than a second predetermined value if a charge current amount has not accumulated over the first predetermined value; detecting a second actual SOC value if a discharge current amount has accumulated over the second predetermined value; storing the second SOC value; calculating a theoretical accumulated current amount using the first and second SOC values; calculating an actual accumulated current amount using the accumulated charge and discharge current amounts; and calculating the aging factor of the battery using the theoretical and actual accumulated current amounts. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification
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- Resources
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Current AssigneeHyundai Motor Company (Hyundai Motor Group)
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Original AssigneeHyundai Motor Company (Hyundai Motor Group)
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InventorsKoo, Jae-Seung
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Primary Examiner(s)Vu; Bao Q.
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Assistant Examiner(s)Tran; Nguyen
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Application NumberUS11/299,386Publication NumberTime in Patent Office761 DaysField of Search320/127, 320/131, 320/132, 320/104US Class Current320/132CPC Class CodesG01R 31/392 Determining battery ageing ...Y02E 60/10 Energy storage using batteries
