BATTERY STATE DETECTION DEVICE, SECONDARY BATTERY SYSTEM, PROGRAM PRODUCT, AND BATTERY STATE DETECTION METHOD

摘要

A battery state detection device that detects the state of a battery and comprises: a first permissible current calculation unit that finds a first permissible current for the battery, on the basis of the battery voltage detected by a voltage detection unit; a second permissible current calculation unit that finds a second permissible current for the battery, without using the voltage of the battery; and a permissible current determination unit that determines the permissible current for the battery in accordance with the state of the battery, on the basis of at least either the first permissible current or the second permissible current.