Current detection apparatus for a car power source

摘要

The current detection apparatus is provided with a current detection section ( 20; 30 ) that detects charging current and discharging current of the car driving battery ( 10 ), a level-shift circuit ( 40; 50 ) connected to the output-side of the current detection section ( 20; 30 ) that shifts the output of the current detection section ( 20; 30 ), and an A/D converter ( 60 ) connected to the output-side of the level-shift circuit ( 40; 50 ). The level-shift circuit ( 40; 50 ) shifts the current detection section ( 20; 30 ) output signal to unbalance the maximum discharging current and maximum charging current that can be detected.