| 摘要 |
PROBLEM TO BE SOLVED: To easily calculate the amount of charge of a storage battery.SOLUTION: Map data is stored in a storage section 15 when the amount of charge in a state in which different types of storage batteries (lead acid battery Pb and nickel hydrogen battery Ni) are interconnected in parallel is calculated. In this map data, charge amount data of the storage battery when a predetermined amount of current flows in response to charge/discharge of the storage battery is associated with time data until the direction of the current flowing between the storage batteries in a non-load state after the predetermined amount of current flows changes. In the non-load state after charge or after discharge, a time measurement section 16 measures the time until the direction of the current flowing between the storage batteries changes. A control section 14 calculates the amount of charge of the storage battery on the basis of the time and map data. |
