METHOD FOR CALCULATING THE CHARGING AMOUNT OF A VEHICLE BATTERY BY CONSIDERING BATTERY PROPERTY VARIATION SUCH AS INTERNAL CHEMICAL VARIATION, DEGRADATION, OTHERS

摘要

PURPOSE: A method for calculating the charging amount of a vehicle battery is provided to prevent an increase of charging amount errors caused by battery property variation.;CONSTITUTION: A main controller receives current battery information such as charging amount, a battery current, and a battery voltage from a battery controller(S11). The main controller determines whether the current charging amount is less than the standard charging amount by comparing the current charging amount with the standard charging amount(S12). The main controller compares an alternator generation rate with a preset generation rate reference value(S13). If the alternator generation rate is less than the reference value, the main controller compares the current battery current and voltage with each reference value(S14,S15). If the battery current is less than the reference value and the battery voltage is more than the reference value, the main controller counts a time from now on(S16). When a battery property variation state is sensed, the main controller outputs a modification command for modifying an SOC-OCV map to the battery controller(S17,S18).;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (B1,B2,B3,B4,B5) No; (CC) Return; (S11) Receiving battery information(SOC, Ibat, Vbat) from a battery controller; (S12) SOC ≤ 85% ?; (S13) Alternator generation rate 90% ?; (S14) 0A Ibat 5A ?; (S15) Vbat 14V ?; (S16) Counting time; (S17) Preset time elapsed?; (S18) Transmitting a map correcting command to the battery controller