Patent ID: 8860244
Filing Date: 2014-10-14
Classification: H02J,Y02T

Abstract:
1. A vehicle power supply apparatus which comprises a battery charged with electric power generated by a generator operated in conjunction with an engine and through which electric power discharged by the battery and electric power generated by the generator are supplied to a plurality of loads, the vehicle power supply apparatus comprising: an electric double layer capacitor connected in parallel to the battery; a connection circuit configured to switch connection and disconnection between respective homopolar terminals of the battery and the electric double layer capacitor; a potential difference detecting section configured to detect a potential difference between terminals of the connection circuit; a time measuring section configured to measure a time elapsed since start of the engine; a capacitor voltage detecting section configured to detect an output voltage from the electric double layer capacitor; a capacitor voltage determining section configured to determine whether or not the output voltage detected by the capacitor voltage detecting section falls within a predetermined voltage range; and an indicating section configured to indicate a determination result upon determination by the capacitor voltage determining section that the detecting output voltage falls within the predetermined voltage range after measurement of a predetermined time by the time measuring section, wherein the connection circuit is connected to charge the electric double layer capacitor based on the potential difference detected by the potential difference detecting section, and wherein the loads comprise loads each of which generates a rush current of a predetermined value or more and each of which is fed electric power outputted by the electric double layer capacitor.