| 摘要 |
Disclosed is a battery sensor module for a vehicle, calculating the internal resistance (Rdi) of a vehicle battery. The battery sensor for the vehicle comprises: a hall sensor (HALL), and an Rdi calculating unit. The hall sensor connects a negative electrode and the vehicle ground of the vehicle battery, and senses the voltage and the current of the vehicle battery. The Rdi calculating unit calculates a delay time between a first time point when a minimal value of the voltage is sensed, and a second time point when the minimal value of the current is sensed, compensates the calculated delay time, and calculates the internal resistance (Rdi) of the vehicle battery according to the minimal value change amount of the voltage of the first time point, and the minimal value change amount of the current of the second time point. |
