System for controlling charge/discharge of secondary battery, and battery controller
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United States of America Patent
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May 18, 2010
Grant Date -
Sep 6, 2007
app pub date -
Mar 1, 2007
filing date -
Mar 3, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In a charging/discharging control system for controlling an allowable power level of a secondary battery at the time of charging/discharging operations, excessive discharging or recharging of the secondary battery is prevented, and excessive suppression of the charging/discharging of the secondary battery is prevented. A vehicle ECU controls charging/discharging of the secondary battery in accordance with a predetermined allowable power level. A battery ECU detects an actual loading power level of a secondary battery; calculates a differential power level between the detected actual loading power level and an allowable power level; measures the number of times the calculated differential power level has become equal to or lower than a predetermined threshold value; and downwardly revises the allowable power level when the count has become equal to or greater than a predetermined upper-limit level.
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