Lead storage battery deterioration determination device, lead storage battery deterioration determination method, charge control device, and charge control method

摘要

A lead-acid battery degradation determination device according to the present disclosure includes a lead-acid battery connected in parallel to each other and a secondary battery other than the lead-acid battery, a voltage detection part that detects the voltage of the power-supply part, and the interior of the secondary battery An acquisition unit for acquiring resistance, a storage unit for preliminarily storing an entire current value supplied from the power source unit to the starting motor when the engine is started by the starting motor, and a voltage of the power source unit when the engine is started by the starting motor Using the starting voltage, the internal resistance of the secondary battery, and the overall current value, the calculation unit that calculates the internal resistance of the lead storage battery is compared with the calculated internal resistance of the lead storage battery and a predetermined resistance threshold value. And when the internal resistance of a lead storage battery is higher than a resistance threshold value, the determination part which determines with a lead storage battery having deteriorated is provided.