초록 ▼

A remaining capacity operation portion 19 provides an approximate linear function (I=aV+b) having a voltage-current characteristic by a method of least squares according to an open circuit voltage when a load 1 is disconnected to a battery 3, a closed circuit voltage when a battery 3 is connected to

A remaining capacity operation portion 19 provides an approximate linear function (I=aV+b) having a voltage-current characteristic by a method of least squares according to an open circuit voltage when a load 1 is disconnected to a battery 3, a closed circuit voltage when a battery 3 is connected to a load 1 which is detected for every predetermined time and a current passing through a load, where a reference value (I<0) is substituted in this approximate linear function, which a display portion 27 displays as an remaining capacity voltage.

대표청구항 ▼

[ What is claimed is:] [1.] A battery remaining capacity measuring apparatus for measuring an open circuit until a battery is connected to a load together with a start of an operation, measuring a plurality of a closed circuit voltage and a current for every predetermined time after a state of said

[ What is claimed is:] [1.] A battery remaining capacity measuring apparatus for measuring an open circuit until a battery is connected to a load together with a start of an operation, measuring a plurality of a closed circuit voltage and a current for every predetermined time after a state of said closed circuit, and obtaining an approximate linear function which shows a voltage-current characteristic according to said voltage and current, said apparatus comprising:a remaining capacity operation portion for obtaining a voltage value whereby a reference value (I<0 ) is substituted in said approximate linear function whenever said approximate linear function, and displaying said voltage value as a remaining capacity operation portion.