BATTERY STATE DETECTION METHOD, BATTERY STATE DETECTION DEVICE, AND OPERATION EXPRESSION DERIVATION METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a battery state detection device or the like capable of estimating accurately a physical quantity such as a dischargeable capacity measured until a voltage of a secondary battery is lowered to a required voltage of an electric load. PSOLUTION: This battery state detection device 100 for detecting the state of the secondary battery 200 feeding an external apparatus 300 includes: a memory 60 for storing characteristic data for specifying a discharge characteristic of the secondary battery 200 showing a discharge state until the voltage of the secondary battery 200 is lowered to a voltage value required for the external apparatus 300; and an operation processing part 50 for estimating the dischargeable capacity or a dischargeable time of the secondary battery 200, based on the characteristic data stored in the memory 60. PCOPYRIGHT: (C)2011,JPO&INPIT