초록 ▼

A method of determining the state of charge of a motor vehicle battery 1 in which a stabilization load 2 is applied to the battery 1 after the engine is switched off to accelerate the stabilization of the charge distribution within the battery 1. The stabilization load 2 is applied until the termina

A method of determining the state of charge of a motor vehicle battery 1 in which a stabilization load 2 is applied to the battery 1 after the engine is switched off to accelerate the stabilization of the charge distribution within the battery 1. The stabilization load 2 is applied until the terminal voltage of the battery 1 reaches a level corresponding to a predicted value of the state of charge of the battery 1. After a pre-determined delay of 8 hours or less, the terminal voltage of the battery 1 is measured and the state of charge derived therefrom.

대표청구항 ▼

A method of determining the state of charge of a battery which is subjected to repeated cycles of partial charge and discharge including the steps of (1) selecting a quiescent interval during which substantially no charging or discharging current flows through the battery (2) applying for a short pe

A method of determining the state of charge of a battery which is subjected to repeated cycles of partial charge and discharge including the steps of (1) selecting a quiescent interval during which substantially no charging or discharging current flows through the battery (2) applying for a short period of time, during said quiescent interval, a specific pre-determined load to the battery to produce a desired discharging current flow through the battery to accelerate stabilization of the charge distribution in the battery (3) removing said load to thereby allow stabilization of the charge distribution in the battery to continue for a predetermined time delay of at least two hours and (4) measuring the terminal voltage of the battery after said time delay and evaluating the state of charge of the battery by comparing the measured voltage with known data on the relationship between the terminal voltage and the state of charge of the battery.