BATTERY DISCHARGE DURATION PREDICTION METHOD, BATTERY STATUS DETECTION METHOD, BATTERY STATUS DETECTION SYSTEM, AND BATTERY POWER SOURCE SYSTEM

摘要

PPROBLEM TO BE SOLVED: To provide a battery discharge duration prediction method, a battery status detection method, a battery status detection system, and a battery power source system which can ensure charged capacity required to operate a predetermined instrument for a battery during discharge. PSOLUTION: The battery discharge duration prediction method creates a voltage drop amount calculation formula for calculating a voltage drop amount V from stable voltage in a first step S1, predicts stable voltage SOC when a predetermined time t has elapsed after continued discharge from a predetermined point of time in a fifth step S5, calculates a voltage drop amount V in a sixth step S6, calculates response voltage V by subtracting the voltage drop amount V from the stable voltage SOC in a seventh step S7, and when it is determined that the response voltage V is sufficiently close to operating limit voltage Vth, determines that the response voltage V has reached the operating limit voltage Vth and sets discharge duration in an eighth step S8. PCOPYRIGHT: (C)2010,JPO&INPIT