Importance

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Abstract

This battery controller of a vehicle includes an internal combustion engine, a generator; a battery; a battery state detector that detects a battery state including the remaining capacity of the battery; a degree-of-deterioration determination unit that determines the degree of deterioration of the battery based on the battery state; a neglect state detector; a monitoring time setting unit that sets a monitoring time to monitor the remaining capacity based on the degree of deterioration and the current remaining capacity of the battery when the neglect state of the vehicle is detected by the neglect state detector; and a charging necessity determination unit that determines whether or not the battery needs to be charged after the monitoring time set by the monitoring time setting unit passes. Charging of the battery by the generator is started when the charging necessity determination unit determines that the battery needs to be charged.

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First Claim